/* roulang page: index */
:root {
            --color-bg-deep: #0B0F12;
            --color-bg-card: #151C24;
            --color-bg-raised: #1E2630;
            --color-accent: #00E5A0;
            --color-accent-glow: rgba(0, 229, 160, 0.35);
            --color-accent-soft: rgba(0, 229, 160, 0.08);
            --color-amber: #FFB400;
            --color-amber-glow: rgba(255, 180, 0, 0.4);
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #9AA5B1;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 8px 20px rgba(0, 0, 0, 0.2);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }
        input, textarea, select {
            font-family: inherit;
            outline: none;
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding-top: 80px;
            padding-bottom: 80px;
        }
        @media (max-width: 768px) {
            section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        @media (max-width: 520px) {
            section {
                padding-top: 36px;
                padding-bottom: 36px;
            }
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(11, 15, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }
        .site-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent 60%, var(--color-accent));
            opacity: 0.7;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--color-text-primary);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0F12;
            font-size: 16px;
            font-weight: 900;
        }
        .logo span {
            color: var(--color-accent);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-desktop a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
        }
        .nav-desktop a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }
        .nav-desktop a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
        }
        .nav-desktop a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-accent-glow);
        }
        .nav-cta {
            background: var(--color-amber);
            color: #0B0F12 !important;
            font-weight: 700;
            padding: 10px 18px !important;
            border-radius: var(--radius-md) !important;
            letter-spacing: 0.3px;
        }
        .nav-cta:hover {
            background: #FFC93D !important;
            color: #0B0F12 !important;
            box-shadow: 0 0 20px var(--color-amber-glow);
        }
        .nav-cta.active::after {
            display: none !important;
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-strong);
            color: var(--color-text-primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            background: var(--color-bg-card);
        }
        .menu-toggle:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            gap: 6px;
            border-top: 1px solid var(--color-border);
            background: rgba(11, 15, 18, 0.98);
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }
        @media (max-width: 900px) {
            .nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .header-inner {
                height: 60px;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            background: var(--color-amber);
            color: #0B0F12;
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .btn-primary:hover {
            background: #FFC93D;
            box-shadow: 0 0 28px var(--color-amber-glow);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 14px var(--color-amber-glow);
        }
        .btn-primary:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.3px;
            border: 1px solid rgba(0, 229, 160, 0.4);
            transition: all var(--transition-base);
        }
        .btn-secondary:hover {
            background: var(--color-accent-soft);
            border-color: var(--color-accent);
            box-shadow: 0 0 16px var(--color-accent-glow);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }
        .btn-small {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            border: 1px solid var(--color-border-strong);
            color: var(--color-text-secondary);
            font-weight: 500;
            transition: all var(--transition-base);
        }
        .btn-small:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-soft);
            box-shadow: 0 0 12px var(--color-accent-glow);
        }
        .btn-small:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        /* Cards */
        .card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-strong);
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--color-bg-raised);
        }
        .card-image-wrap {
            position: relative;
            overflow: hidden;
        }
        .card-image-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 15, 18, 0.6));
            pointer-events: none;
        }
        .card-body {
            padding: 20px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            margin-bottom: 10px;
        }
        .badge-amber {
            background: rgba(255, 180, 0, 0.12);
            color: var(--color-amber);
        }
        .badge-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text-secondary);
        }

        /* Hero */
        .hero {
            padding-top: 60px;
            padding-bottom: 80px;
            position: relative;
            overflow: hidden;
            background: linear-gradient(180deg, #0B0F12 0%, #0E1418 60%, #0B0F12 100%);
        }
        .hero-bg-image {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.32;
            pointer-events: none;
            z-index: 0;
        }
        .hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 229, 160, 0.06), transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(255, 180, 0, 0.05), transparent 55%);
            pointer-events: none;
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            border: 1px solid rgba(0, 229, 160, 0.2);
            margin-bottom: 20px;
        }
        .hero-tag .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: 0 0 8px var(--color-accent-glow);
        }
        .hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            color: var(--color-text-primary);
        }
        .hero h1 .highlight {
            color: var(--color-accent);
            text-shadow: 0 0 24px var(--color-accent-glow);
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-secondary);
            margin-bottom: 30px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-value {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: -0.3px;
        }
        .hero-stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 2px;
        }
        .hero-side-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }
        .hero-side-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-side-card h3 i {
            color: var(--color-accent);
            font-size: 14px;
        }
        .hero-match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            gap: 12px;
        }
        .hero-match-row:last-child {
            border-bottom: none;
        }
        .hero-match-teams {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
        }
        .hero-match-status {
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 999px;
            font-weight: 600;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            white-space: nowrap;
        }
        .hero-match-status.live {
            background: rgba(255, 80, 80, 0.15);
            color: #FF6B6B;
        }
        .hero-match-status.upcoming {
            background: rgba(255, 180, 0, 0.12);
            color: var(--color-amber);
        }

        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero h1 {
                font-size: 40px;
            }
            .hero-desc {
                max-width: 100%;
            }
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 32px;
                letter-spacing: -0.2px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-value {
                font-size: 22px;
            }
            .hero-actions {
                gap: 10px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 20px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 28px;
            }
            .hero {
                padding-top: 36px;
                padding-bottom: 40px;
            }
            .hero-match-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        /* Section headings */
        .section-head {
            margin-bottom: 40px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 12px;
        }
        .section-label::before {
            content: "";
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-accent-glow);
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text-primary);
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }
        .section-subtitle {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            max-width: 640px;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 22px;
            }
        }

        /* Data ticker */
        .data-ticker {
            background: var(--color-bg-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: 16px 0;
            overflow: hidden;
        }
        .ticker-track {
            display: flex;
            gap: 20px;
            animation: tickerScroll 30s linear infinite;
            width: max-content;
        }
        .ticker-track:hover {
            animation-play-state: paused;
        }
        @keyframes tickerScroll {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }
        .ticker-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 20px;
            background: var(--color-bg-raised);
            border: 1px solid var(--color-border);
            border-radius: 999px;
            white-space: nowrap;
            font-size: 13px;
        }
        .ticker-item .label {
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .ticker-item .value {
            color: var(--color-accent);
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .ticker-item .value-amber {
            color: var(--color-amber);
        }
        .ticker-item .pulse {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #FF6B6B;
            box-shadow: 0 0 8px rgba(255, 107, 107, 0.6);
            animation: pulse 1.5s ease-in-out infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.7); }
        }

        /* Grid layouts */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-6 {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        @media (max-width: 1024px) {
            .grid-3, .grid-6 {
                grid-template-columns: repeat(3, 1fr);
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .grid-3, .grid-6 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-6 {
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .grid-3, .grid-6, .grid-2 {
                grid-template-columns: 1fr;
            }
        }

        /* Scene cards */
        .scene-card {
            padding: 28px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .scene-card:hover {
            border-color: var(--color-accent);
            box-shadow: 0 0 24px var(--color-accent-glow);
            transform: translateY(-3px);
        }
        .scene-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--color-accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-accent);
            margin-bottom: 16px;
        }
        .scene-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-text-primary);
        }
        .scene-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* Article content */
        .article-content {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 12px;
            margin-top: 24px;
            line-height: 1.4;
        }
        .article-content p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-text-secondary);
            margin-bottom: 14px;
        }
        @media (max-width: 768px) {
            .article-content {
                padding: 20px;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .article-content h3 {
                font-size: 16px;
            }
            .article-content p {
                font-size: 14px;
            }
        }

        /* News cards */
        .news-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-base);
        }
        .news-card:hover {
            border-color: var(--color-accent);
            box-shadow: 0 0 20px var(--color-accent-glow);
            transform: translateY(-2px);
        }
        .news-card-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-amber);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .news-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Comparison */
        .compare-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all var(--transition-base);
        }
        .compare-card.recommended {
            border-color: var(--color-accent);
            background: rgba(0, 229, 160, 0.04);
            box-shadow: 0 0 24px var(--color-accent-glow);
        }
        .compare-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-card li {
            padding: 10px 0;
            font-size: 14px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }
        .compare-card li:last-child {
            border-bottom: none;
        }
        .compare-card li i {
            margin-top: 3px;
            flex-shrink: 0;
        }
        .compare-card li i.fa-check {
            color: var(--color-accent);
        }
        .compare-card li i.fa-xmark {
            color: #FF6B6B;
        }

        /* FAQ */
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border-strong);
        }
        .faq-question {
            width: 100%;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            text-align: left;
            background: transparent;
            transition: all var(--transition-base);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-question .icon {
            flex-shrink: 0;
            color: var(--color-accent);
            font-size: 14px;
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            border-left: 3px solid var(--color-accent);
            margin-left: 20px;
            padding-left: 16px;
        }

        /* Process steps */
        .step-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
            transition: all var(--transition-base);
        }
        .step-card:hover {
            border-color: var(--color-accent);
            transform: translateY(-2px);
            box-shadow: 0 0 20px var(--color-accent-glow);
        }
        .step-number {
            font-size: 36px;
            font-weight: 900;
            color: var(--color-accent);
            opacity: 0.35;
            line-height: 1;
            margin-bottom: 12px;
            letter-spacing: -1px;
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, #0E1A16 0%, #0B0F12 60%, #1A1208 100%);
            border: 1px solid rgba(0, 229, 160, 0.2);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 229, 160, 0.08), transparent 70%);
            pointer-events: none;
        }
        .cta-banner h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-text-primary);
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }
        .cta-banner .btn-primary {
            position: relative;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .cta-banner {
                padding: 28px 20px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
        }

        /* Bottom fixed bar */
        .bottom-fixed-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(11, 15, 18, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--color-border-strong);
            padding: 12px 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }
        .bottom-fixed-bar p {
            font-size: 14px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .bottom-fixed-bar p strong {
            color: var(--color-accent);
            font-weight: 700;
        }
        .bottom-fixed-bar .btn-primary {
            padding: 10px 20px;
            font-size: 14px;
            white-space: nowrap;
        }
        @media (max-width: 640px) {
            .bottom-fixed-bar {
                border-radius: 999px;
                bottom: 16px;
                left: 16px;
                right: 16px;
                padding: 10px 14px;
                justify-content: space-between;
            }
            .bottom-fixed-bar p {
                font-size: 13px;
            }
            .bottom-fixed-bar .btn-primary {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        /* Footer */
        .site-footer {
            background: #080B0E;
            border-top: 1px solid var(--color-border);
            padding: 48px 0 32px;
            margin-bottom: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-text-primary);
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--color-accent);
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--color-text-secondary);
            padding: 5px 0;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--color-text-secondary);
        }
        .footer-bottom a {
            color: var(--color-text-secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .site-footer {
                margin-bottom: 80px;
                padding: 32px 0 24px;
            }
        }

        /* Divider */
        .divider-accent {
            width: 48px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-amber));
            margin-bottom: 16px;
            box-shadow: 0 0 12px var(--color-accent-glow);
        }

        /* Animation utilities */
        .animate-fade-in {
            animation: fadeIn 0.6s ease-out forwards;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(16px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-delay-1 {
            animation-delay: 0.1s;
            opacity: 0;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
            opacity: 0;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
            opacity: 0;
        }

        /* Data visualization grid */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .data-bar-wrap {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
        }
        .data-bar-wrap h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-secondary);
            margin-bottom: 12px;
        }
        .data-bar {
            height: 8px;
            border-radius: 4px;
            background: var(--color-bg-raised);
            overflow: hidden;
            margin-bottom: 8px;
        }
        .data-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-amber));
            transition: width 0.8s ease-out;
            box-shadow: 0 0 10px var(--color-accent-glow);
        }
        .data-bar-value {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-text-primary);
        }
        .data-bar-label {
            font-size: 12px;
            color: var(--color-text-secondary);
        }
        @media (max-width: 1024px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Social proof / testimonials */
        .testimonial-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            border-color: var(--color-border-strong);
            transform: translateY(-2px);
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            color: #0B0F12;
            flex-shrink: 0;
        }
        .testimonial-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .testimonial-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-primary);
        }
        .testimonial-tag {
            font-size: 11px;
            color: var(--color-amber);
            font-weight: 600;
        }
        .testimonial-text {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* Security badge bar */
        .badge-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .badge-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
        }
        .badge-item:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            box-shadow: 0 0 14px var(--color-accent-glow);
        }
        .badge-item i {
            color: var(--color-accent);
            font-size: 16px;
        }

/* roulang page: category3 */
:root {
            --color-bg-deep: #0B0F12;
            --color-bg-card: #151C24;
            --color-bg-raised: #1E2630;
            --color-accent: #00E5A0;
            --color-accent-glow: rgba(0, 229, 160, 0.35);
            --color-accent-soft: rgba(0, 229, 160, 0.08);
            --color-amber: #FFB400;
            --color-amber-glow: rgba(255, 180, 0, 0.4);
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #9AA5B1;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 8px 20px rgba(0, 0, 0, 0.2);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding-top: 48px;
            padding-bottom: 48px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(11, 15, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }
        .site-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent 60%, var(--color-accent));
            opacity: 0.7;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--color-text-primary);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0F12;
            font-size: 16px;
            font-weight: 900;
        }
        .logo span {
            color: var(--color-accent);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-desktop a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
        }
        .nav-desktop a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }
        .nav-desktop a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
        }
        .nav-desktop a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-accent-glow);
        }
        .nav-cta {
            background: var(--color-amber);
            color: #0B0F12 !important;
            font-weight: 700;
            padding: 10px 18px !important;
            border-radius: var(--radius-md) !important;
            letter-spacing: 0.3px;
        }
        .nav-cta:hover {
            background: #FFC93D !important;
            color: #0B0F12 !important;
            box-shadow: 0 0 20px var(--color-amber-glow);
        }
        .nav-cta.active::after {
            display: none !important;
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-strong);
            color: var(--color-text-primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
        }
        .mobile-nav {
            display: none;
            background: #0B0F12;
            border-top: 1px solid var(--color-border);
            padding: 12px 16px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-nav a {
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            color: var(--color-text-secondary);
            font-size: 15px;
            font-weight: 500;
        }
        .mobile-nav a:hover {
            background: var(--color-accent-soft);
            color: var(--color-text-primary);
        }
        .mobile-nav a.active {
            color: var(--color-accent);
            text-shadow: 0 0 10px var(--color-accent-glow);
        }
        .mobile-nav.open {
            display: flex;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb i {
            font-size: 10px;
            color: var(--color-text-secondary);
        }
        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 500;
        }

        /* Page Hero */
        .page-hero {
            padding: 64px 0 40px;
            background: radial-gradient(ellipse at 30% 20%, rgba(0, 229, 160, 0.07), transparent 60%), var(--color-bg-deep);
            border-bottom: 1px solid var(--color-border);
        }
        .page-hero h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }
        .page-hero h1 .highlight {
            color: var(--color-accent);
            text-shadow: 0 0 16px var(--color-accent-glow);
        }
        .page-hero .subtitle {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }

        /* Category Hero Stats */
        .category-hero-stats {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 28px;
        }
        .hero-stat-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            min-width: 140px;
            flex: 1;
            text-align: center;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .hero-stat-item:hover {
            border-color: var(--color-accent-glow);
            box-shadow: var(--shadow-card);
        }
        .hero-stat-item .stat-label {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-bottom: 6px;
            letter-spacing: 1px;
        }
        .hero-stat-item .stat-value {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-primary);
        }
        .hero-stat-item .stat-value.accent {
            color: var(--color-accent);
        }
        .hero-stat-item .stat-value.amber {
            color: var(--color-amber);
        }

        /* Section Title */
        .section-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
            line-height: 1.4;
        }
        .section-title .accent {
            color: var(--color-accent);
        }
        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 720px;
        }

        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
            margin-bottom: 24px;
        }
        .content-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent-glow);
        }
        .content-card .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-bg-raised);
        }
        .content-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .content-card:hover .card-image img {
            transform: scale(1.04);
        }
        .content-card .card-image .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(11, 15, 18, 0.85);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            border: 1px solid var(--color-accent-glow);
        }
        .content-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .content-card .card-meta {
            font-size: 12px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }
        .content-card .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 10px;
            color: var(--color-text-primary);
        }
        .content-card:hover .card-title {
            color: var(--color-accent);
        }
        .content-card .card-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .content-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-base);
        }
        .content-card .card-link:hover {
            gap: 10px;
            color: var(--color-amber);
        }

        /* Knowledge Article */
        .knowledge-article {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            line-height: 1.8;
        }
        .knowledge-article h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin: 24px 0 12px;
            letter-spacing: 0.3px;
        }
        .knowledge-article h3:first-child {
            margin-top: 0;
        }
        .knowledge-article p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .knowledge-article p strong {
            color: var(--color-text-primary);
            font-weight: 600;
        }
        .knowledge-article .highlight-text {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-accent-glow);
        }
        .faq-item.active {
            border-color: var(--color-accent);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.08);
        }
        .faq-question {
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            background: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-base);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: transform var(--transition-base), color var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* News List */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: flex-start;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .news-item:hover {
            border-color: var(--color-accent-glow);
            box-shadow: var(--shadow-card);
        }
        .news-date {
            flex-shrink: 0;
            min-width: 90px;
            text-align: center;
            background: var(--color-accent-soft);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.5px;
        }
        .news-content {
            flex: 1;
            min-width: 200px;
        }
        .news-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text-primary);
        }
        .news-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .news-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
        }
        .news-link:hover {
            color: var(--color-amber);
        }

        /* Data Visualization */
        .data-viz-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }
        .data-viz-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .data-viz-card:hover {
            border-color: var(--color-accent-glow);
            box-shadow: var(--shadow-card);
        }
        .data-viz-card .viz-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 4px;
        }
        .data-viz-card .viz-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 12px;
        }
        .viz-bar-row {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 6px;
        }
        .viz-bar-label {
            font-size: 12px;
            color: var(--color-text-secondary);
            width: 50px;
            text-align: right;
            flex-shrink: 0;
        }
        .viz-bar-track {
            flex: 1;
            height: 8px;
            background: var(--color-bg-raised);
            border-radius: 4px;
            overflow: hidden;
        }
        .viz-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-amber));
            transition: width 0.6s ease;
        }

        /* CTA Section */
        .cta-section-inner {
            background: linear-gradient(135deg, #0F1A15 0%, #0B0F12 50%, #1A1206 100%);
            border: 1px solid var(--color-accent-glow);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section-inner::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(0, 229, 160, 0.12), transparent 50%);
            pointer-events: none;
        }
        .cta-section-inner h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section-inner p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .cta-section-inner .cta-button {
            background: var(--color-amber);
            color: #0B0F12;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 15px;
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            position: relative;
            z-index: 1;
        }
        .cta-section-inner .cta-button:hover {
            background: #FFC93D;
            box-shadow: 0 0 28px var(--color-amber-glow);
        }

        /* View More Button */
        .view-more-wrap {
            text-align: center;
            margin-top: 8px;
        }
        .view-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-md);
            color: var(--color-accent);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            background: transparent;
            transition: all var(--transition-base);
        }
        .view-more-btn:hover {
            background: var(--color-accent-soft);
            box-shadow: 0 0 20px var(--color-accent-glow);
            color: var(--color-accent);
        }

        /* Footer */
        .site-footer {
            background: #080B0E;
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--color-accent);
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--color-text-secondary);
            padding: 4px 0;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-secondary);
        }
        .footer-bottom a {
            color: var(--color-accent);
            font-weight: 500;
        }
        .footer-bottom a:hover {
            color: var(--color-amber);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-desktop {
                gap: 2px;
            }
            .nav-desktop a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .cards-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .page-hero {
                padding: 40px 0 28px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .knowledge-article {
                padding: 20px;
            }
            .data-viz-grid {
                grid-template-columns: 1fr;
            }
            section {
                padding-top: 32px;
                padding-bottom: 32px;
            }
            .cta-section-inner {
                padding: 32px 20px;
            }
            .cta-section-inner h2 {
                font-size: 22px;
            }
            .section-title {
                font-size: 20px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            .page-hero h1 {
                font-size: 22px;
            }
            .page-hero .subtitle {
                font-size: 15px;
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
            }
            .news-date {
                min-width: auto;
                text-align: left;
                display: inline-block;
            }
            .hero-stat-item {
                min-width: calc(50% - 10px);
                padding: 12px;
            }
            .hero-stat-item .stat-value {
                font-size: 18px;
            }
            .content-card .card-title {
                font-size: 16px;
            }
            .section-title {
                font-size: 18px;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg-deep: #0B0F12;
            --color-bg-card: #151C24;
            --color-bg-raised: #1E2630;
            --color-accent: #00E5A0;
            --color-accent-glow: rgba(0, 229, 160, 0.35);
            --color-accent-soft: rgba(0, 229, 160, 0.08);
            --color-amber: #FFB400;
            --color-amber-glow: rgba(255, 180, 0, 0.4);
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #9AA5B1;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 8px 20px rgba(0, 0, 0, 0.2);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding-top: 72px;
            padding-bottom: 72px;
        }

        * {
            box-sizing: border-box;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(11, 15, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }

        .site-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent 60%, var(--color-accent));
            opacity: 0.7;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--color-text-primary);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0F12;
            font-size: 16px;
            font-weight: 900;
        }

        .logo span {
            color: var(--color-accent);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-desktop a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
        }

        .nav-desktop a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }

        .nav-desktop a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
        }

        .nav-desktop a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-accent-glow);
        }

        .nav-cta {
            background: var(--color-amber);
            color: #0B0F12 !important;
            font-weight: 700;
            padding: 10px 18px !important;
            border-radius: var(--radius-md) !important;
            letter-spacing: 0.3px;
        }

        .nav-cta:hover {
            background: #FFC93D !important;
            color: #0B0F12 !important;
            box-shadow: 0 0 20px var(--color-amber-glow);
        }

        .nav-cta.active::after {
            display: none !important;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-strong);
            color: var(--color-text-primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: rgba(11, 15, 18, 0.98);
            border-bottom: 1px solid var(--color-border);
            padding: 12px 24px 20px;
            gap: 4px;
        }

        .mobile-nav a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
        }

        .mobile-nav a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }

        .mobile-nav a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
            background: var(--color-accent-soft);
        }

        .mobile-nav.open {
            display: flex;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .sep {
            color: var(--color-border-strong);
        }

        .breadcrumb .current {
            color: var(--color-accent);
        }

        /* Section heading */
        .section-heading {
            margin-bottom: 32px;
        }

        .section-heading h2 {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: 0.5px;
            line-height: 1.4;
            margin: 0 0 8px;
            color: var(--color-text-primary);
        }

        .section-heading p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin: 0;
            max-width: 720px;
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-amber);
            color: #0B0F12;
            font-weight: 700;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
            border: 2px solid var(--color-amber);
        }

        .btn-primary:hover {
            background: #FFC93D;
            box-shadow: 0 0 28px var(--color-amber-glow);
            transform: translateY(-2px);
        }

        .btn-primary:focus {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
            border: 2px solid var(--color-accent);
        }

        .btn-outline:hover {
            background: var(--color-accent-soft);
            box-shadow: 0 0 24px var(--color-accent-glow);
            transform: translateY(-2px);
        }

        .btn-outline:focus {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 14px;
            padding: 8px 4px;
            transition: all var(--transition-base);
            border-bottom: 1px solid transparent;
        }

        .btn-text:hover {
            color: var(--color-text-primary);
            border-bottom-color: var(--color-accent);
            gap: 10px;
        }

        /* Cards */
        .card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--color-border-strong);
        }

        .card-cover {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background-color: var(--color-bg-raised);
        }

        .card-body {
            padding: 20px 24px;
        }

        .card-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-text-primary);
            margin: 0 0 8px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-bottom: 10px;
        }

        .card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            border: 1px solid rgba(0, 229, 160, 0.2);
        }

        .badge-amber {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(255, 180, 0, 0.12);
            color: var(--color-amber);
            border: 1px solid rgba(255, 180, 0, 0.25);
        }

        /* FAQ */
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--color-border-strong);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-primary);
            text-align: left;
            border-left: 3px solid transparent;
            transition: all var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-accent);
            border-left-color: var(--color-accent);
        }

        .faq-question .fa-chevron-down {
            transition: transform var(--transition-base);
            font-size: 14px;
            color: var(--color-text-secondary);
            flex-shrink: 0;
        }

        .faq-question.open .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-answer {
            display: none;
            padding: 0 24px 20px 27px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            border-left: 3px solid var(--color-accent);
            margin-left: 0;
        }

        .faq-answer.open {
            display: block;
        }

        /* News/Article cards */
        .news-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            border-color: var(--color-accent);
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.08);
            transform: translateY(-2px);
        }

        .news-date {
            font-size: 12px;
            color: var(--color-amber);
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .news-summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex-grow: 1;
            margin-bottom: 16px;
        }

        /* Data visual cards */
        .data-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all var(--transition-base);
        }

        .data-card:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card-hover);
        }

        .data-label {
            font-size: 12px;
            color: var(--color-text-secondary);
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .data-value {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .data-trend {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 10px;
            font-size: 13px;
        }

        .trend-up {
            color: var(--color-accent);
        }

        .trend-down {
            color: #FF6B6B;
        }

        /* Progress bars for data */
        .trend-bar {
            height: 6px;
            background: var(--color-bg-raised);
            border-radius: 3px;
            overflow: hidden;
            margin-top: 8px;
        }

        .trend-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--color-accent), var(--color-amber));
            border-radius: 3px;
            transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* CTA section */
        .cta-banner {
            background: linear-gradient(135deg, #0F1A22 0%, #0B0F12 60%, #1A2A20 100%);
            border: 1px solid var(--color-border-strong);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(0, 229, 160, 0.12), transparent 70%);
            pointer-events: none;
        }

        /* Footer */
        .site-footer {
            background-color: #080B0E;
            border-top: 1px solid var(--color-border);
            padding-top: 48px;
            padding-bottom: 32px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--color-text-primary);
            margin-bottom: 12px;
        }

        .footer-brand span {
            color: var(--color-accent);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 480px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--color-text-secondary);
            padding: 6px 0;
            transition: all var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .footer-bottom a {
            color: var(--color-text-secondary);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            section {
                padding-top: 56px;
                padding-bottom: 56px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .header-inner {
                height: 60px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .section-heading h2 {
                font-size: 22px;
            }
            .data-value {
                font-size: 26px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            section {
                padding-top: 36px;
                padding-bottom: 36px;
            }
            .card-body {
                padding: 16px 18px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px 16px 19px;
            }
            .news-card {
                padding: 18px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .btn-primary,
            .btn-outline {
                padding: 11px 20px;
                font-size: 14px;
            }
        }

        /* Category switch cards */
        .cat-switch-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            text-align: center;
            transition: all var(--transition-base);
            cursor: pointer;
            display: block;
        }

        .cat-switch-card:hover {
            border-color: var(--color-accent);
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.12);
            transform: translateY(-2px);
        }

        .cat-switch-card.active {
            border-color: var(--color-accent);
            background: var(--color-accent-soft);
        }

        .cat-switch-icon {
            font-size: 22px;
            color: var(--color-accent);
            margin-bottom: 6px;
        }

        .cat-switch-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
        }

        /* Knowledge article */
        .knowledge-article {
            max-width: 860px;
        }

        .knowledge-article h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin: 24px 0 10px;
            line-height: 1.45;
        }

        .knowledge-article p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .knowledge-article strong {
            color: var(--color-text-primary);
        }

/* roulang page: category1 */
:root {
            --color-bg-deep: #0B0F12;
            --color-bg-card: #151C24;
            --color-bg-raised: #1E2630;
            --color-accent: #00E5A0;
            --color-accent-glow: rgba(0, 229, 160, 0.35);
            --color-accent-soft: rgba(0, 229, 160, 0.08);
            --color-amber: #FFB400;
            --color-amber-glow: rgba(255, 180, 0, 0.4);
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #9AA5B1;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 8px 20px rgba(0, 0, 0, 0.2);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding-top: 72px;
            padding-bottom: 72px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(11, 15, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }

        .site-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent 60%, var(--color-accent));
            opacity: 0.7;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--color-text-primary);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0F12;
            font-size: 16px;
            font-weight: 900;
        }

        .logo span {
            color: var(--color-accent);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-desktop a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
        }

        .nav-desktop a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }

        .nav-desktop a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
        }

        .nav-desktop a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-accent-glow);
        }

        .nav-cta {
            background: var(--color-amber);
            color: #0B0F12 !important;
            font-weight: 700;
            padding: 10px 18px !important;
            border-radius: var(--radius-md) !important;
            letter-spacing: 0.3px;
        }

        .nav-cta:hover {
            background: #FFC93D !important;
            color: #0B0F12 !important;
            box-shadow: 0 0 20px var(--color-amber-glow);
        }

        .nav-cta.active::after {
            display: none !important;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-strong);
            color: var(--color-text-primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            background: transparent;
        }

        .menu-toggle:hover {
            background: var(--color-accent-soft);
            color: var(--color-accent);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: rgba(11, 15, 18, 0.98);
            border-top: 1px solid var(--color-border);
            padding: 12px 0;
        }

        .mobile-nav a {
            padding: 14px 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-left: 3px solid transparent;
            transition: all var(--transition-base);
        }

        .mobile-nav a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
            border-left-color: var(--color-accent);
        }

        .mobile-nav a.active {
            color: var(--color-accent);
            border-left-color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
        }

        .mobile-nav.open {
            display: flex;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
            padding: 20px 0 8px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .sep {
            color: var(--color-border-strong);
            font-size: 10px;
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 500;
        }

        /* Page Header */
        .page-header {
            padding: 32px 0 24px;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 48px;
        }

        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text-primary);
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }

        .page-header .h1-accent {
            color: var(--color-accent);
        }

        .page-header .page-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 850px;
            margin: 0;
        }

        /* Section title */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--color-text-primary);
        }

        .section-title .title-accent {
            color: var(--color-accent);
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 32px;
            max-width: 720px;
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background-color: var(--color-bg-raised);
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .card:hover .card-image img {
            transform: scale(1.04);
        }

        .card-body {
            padding: 20px 20px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }

        .card-date {
            font-size: 12px;
            color: var(--color-text-secondary);
            letter-spacing: 0.3px;
        }

        .card-tag {
            font-size: 11px;
            font-weight: 600;
            color: var(--color-accent);
            background: var(--color-accent-soft);
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 0.4px;
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-text-primary);
            margin: 0 0 10px;
        }

        .card-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            padding: 6px 0;
            transition: all var(--transition-base);
        }

        .card-link:hover {
            color: #00FFBB;
        }

        .card-link i {
            font-size: 11px;
            transition: transform var(--transition-base);
        }

        .card-link:hover i {
            transform: translateX(4px);
        }

        /* Article content */
        .article-block {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            box-shadow: var(--shadow-card);
        }

        .article-block h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin: 0 0 16px;
            line-height: 1.4;
        }

        .article-block h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-accent);
            margin: 28px 0 12px;
            line-height: 1.4;
        }

        .article-block p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0 0 16px;
        }

        .article-block p:last-child {
            margin-bottom: 0;
        }

        /* Data visualization */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .data-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-base);
        }

        .data-card:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card-hover);
        }

        .data-card .data-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-text-secondary);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .data-card .data-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 4px;
            letter-spacing: -0.5px;
        }

        .data-card .data-sub {
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .trend-bars {
            display: flex;
            align-items: flex-end;
            gap: 6px;
            height: 60px;
            margin-top: 12px;
        }

        .trend-bar {
            flex: 1;
            background: var(--color-accent-soft);
            border-radius: 4px 4px 0 0;
            min-height: 8px;
            transition: all var(--transition-base);
            position: relative;
        }

        .trend-bar:hover {
            background: var(--color-accent-glow);
        }

        .trend-bar .bar-value {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 10px;
            color: var(--color-text-secondary);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .trend-bar:hover .bar-value {
            opacity: 1;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--color-border-strong);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            transition: all var(--transition-base);
            user-select: none;
            width: 100%;
            text-align: left;
            background: transparent;
        }

        .faq-question:hover {
            background: var(--color-accent-soft);
        }

        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--color-accent);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
            border-left: 2px solid var(--color-accent);
            padding-left: 14px;
        }

        /* News list */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            transition: all var(--transition-base);
        }

        .news-item:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card);
        }

        .news-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            flex-shrink: 0;
            min-width: 60px;
        }

        .news-text {
            flex: 1;
        }

        .news-text .news-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin: 0 0 4px;
        }

        .news-text .news-summary {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        .news-more {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            flex-shrink: 0;
            transition: all var(--transition-base);
        }

        .news-more:hover {
            color: #00FFBB;
        }

        /* CTA Section */
        .cta-box {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -60%;
            left: -40%;
            width: 80%;
            height: 220%;
            background: radial-gradient(ellipse at center, rgba(0, 229, 160, 0.06), transparent 70%);
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin: 0 0 12px;
            position: relative;
        }

        .cta-box p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin: 0 0 24px;
            position: relative;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
            cursor: pointer;
            position: relative;
        }

        .btn-primary {
            background: var(--color-amber);
            color: #0B0F12;
            border: 2px solid var(--color-amber);
        }

        .btn-primary:hover {
            background: #FFC93D;
            border-color: #FFC93D;
            box-shadow: 0 0 24px var(--color-amber-glow);
        }

        .btn-primary:focus {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        .btn-outline {
            background: transparent;
            color: var(--color-accent);
            border: 2px solid var(--color-accent);
        }

        .btn-outline:hover {
            background: var(--color-accent-soft);
            border-color: var(--color-accent);
            box-shadow: 0 0 16px var(--color-accent-glow);
        }

        .btn-outline:focus {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        .btn-block {
            display: flex;
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-bg-deep);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 32px;
            margin-top: 48px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand span {
            color: var(--color-accent);
        }

        .footer-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 420px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--color-text-secondary);
            padding: 4px 0;
            transition: color var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-secondary);
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
        }

        .footer-bottom a {
            color: var(--color-text-secondary);
            transition: color var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Category switch */
        .category-switch {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .category-switch a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 8px 16px;
            border-radius: 20px;
            border: 1px solid var(--color-border-strong);
            background: var(--color-bg-card);
            transition: all var(--transition-base);
        }

        .category-switch a:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background: var(--color-accent-soft);
        }

        .category-switch a.active {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background: var(--color-accent-soft);
            text-shadow: 0 0 8px var(--color-accent-glow);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .article-block {
                padding: 28px 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .data-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 22px;
            }
            .article-block {
                padding: 22px 18px;
            }
            .article-block h2 {
                font-size: 20px;
            }
            .article-block h3 {
                font-size: 17px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 14px 16px;
            }
            .news-date {
                min-width: auto;
            }
            .cta-box {
                padding: 28px 20px;
            }
            .cta-box h2 {
                font-size: 20px;
            }
            section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 20px;
            }
            .card-body {
                padding: 16px 16px 14px;
            }
            .card-title {
                font-size: 16px;
            }
            .article-block {
                padding: 18px 14px;
            }
            .btn {
                font-size: 14px;
                padding: 10px 20px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer p {
                font-size: 13px;
            }
            .category-switch a {
                font-size: 12px;
                padding: 6px 12px;
            }
            .trend-bars {
                height: 44px;
                gap: 4px;
            }
        }

/* roulang page: category6 */
:root {
            --color-bg-deep: #0B0F12;
            --color-bg-card: #151C24;
            --color-bg-raised: #1E2630;
            --color-accent: #00E5A0;
            --color-accent-glow: rgba(0, 229, 160, 0.35);
            --color-accent-soft: rgba(0, 229, 160, 0.08);
            --color-amber: #FFB400;
            --color-amber-glow: rgba(255, 180, 0, 0.4);
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #9AA5B1;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 8px 20px rgba(0, 0, 0, 0.2);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(11, 15, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }

        .site-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent 60%, var(--color-accent));
            opacity: 0.7;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--color-text-primary);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0F12;
            font-size: 16px;
            font-weight: 900;
        }

        .logo span {
            color: var(--color-accent);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-desktop a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
        }

        .nav-desktop a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }

        .nav-desktop a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
        }

        .nav-desktop a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-accent-glow);
        }

        .nav-cta {
            background: var(--color-amber);
            color: #0B0F12 !important;
            font-weight: 700;
            padding: 10px 18px !important;
            border-radius: var(--radius-md) !important;
            letter-spacing: 0.3px;
        }

        .nav-cta:hover {
            background: #FFC93D !important;
            color: #0B0F12 !important;
            box-shadow: 0 0 20px var(--color-amber-glow);
        }

        .nav-cta.active::after {
            display: none !important;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-strong);
            color: var(--color-text-primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 12px 16px 16px;
            background-color: var(--color-bg-deep);
            border-top: 1px solid var(--color-border);
        }

        .mobile-nav a {
            padding: 12px 8px;
            border-radius: var(--radius-sm);
            color: var(--color-text-secondary);
            font-size: 15px;
            font-weight: 500;
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }

        /* Button styles */
        .btn-primary {
            background: var(--color-amber);
            color: #0B0F12;
            font-weight: 700;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            letter-spacing: 0.3px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }

        .btn-primary:hover {
            background: #FFC93D;
            box-shadow: 0 0 24px var(--color-amber-glow);
            transform: translateY(-1px);
        }

        .btn-primary:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            letter-spacing: 0.3px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(0, 229, 160, 0.4);
            transition: all var(--transition-base);
        }

        .btn-secondary:hover {
            background: var(--color-accent-soft);
            border-color: var(--color-accent);
            box-shadow: 0 0 16px var(--color-accent-glow);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--color-text-secondary);
            padding: 20px 0 8px;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .separator {
            color: var(--color-border-strong);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-text-primary);
            font-weight: 600;
        }

        /* Page header */
        .page-header {
            padding: 40px 0 32px;
            border-bottom: 1px solid var(--color-border);
            background: linear-gradient(180deg, rgba(0, 229, 160, 0.03) 0%, transparent 100%);
        }

        .page-header h1 {
            font-size: 40px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--color-text-primary);
        }

        .page-header .header-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 880px;
            line-height: 1.75;
        }

        /* Card grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .card-grid .col-span-12 {
            grid-column: span 12;
        }

        .card-grid .col-span-6 {
            grid-column: span 6;
        }

        .card-grid .col-span-4 {
            grid-column: span 4;
        }

        .card-grid .col-span-3 {
            grid-column: span 3;
        }

        .info-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            position: relative;
        }

        .info-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-strong);
        }

        .info-card .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            background: var(--color-bg-raised);
        }

        .info-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 8px;
            font-size: 12px;
            color: var(--color-text-secondary);
        }

        .info-card .card-meta .badge {
            background: var(--color-accent-soft);
            color: var(--color-accent);
            padding: 3px 10px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 11px;
            letter-spacing: 0.3px;
        }

        .info-card .card-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .info-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.45;
            color: var(--color-text-primary);
        }

        .info-card .card-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .info-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            transition: gap var(--transition-base);
        }

        .info-card .card-link:hover {
            gap: 10px;
            color: var(--color-amber);
        }

        /* Section titles */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text-primary);
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        /* Article list */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .article-item:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card-hover);
        }

        .article-item .article-image {
            width: 200px;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
            background: var(--color-bg-raised);
        }

        .article-item .article-content {
            flex: 1;
            min-width: 0;
        }

        .article-item .article-meta {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-bottom: 6px;
            align-items: center;
        }

        .article-item .article-meta .badge {
            background: var(--color-accent-soft);
            color: var(--color-accent);
            padding: 3px 10px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 11px;
        }

        .article-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text-primary);
            line-height: 1.45;
        }

        .article-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.65;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--color-border-strong);
        }

        .faq-item details {
            padding: 0;
        }

        .faq-item summary {
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text-primary);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-base);
        }

        .faq-item summary:hover {
            color: var(--color-accent);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            font-size: 12px;
            transition: transform var(--transition-base);
        }

        .faq-item details[open] summary .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            border-left: 3px solid var(--color-accent);
            margin-left: 24px;
            padding-left: 16px;
        }

        /* Trend list */
        .trend-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .trend-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 18px;
            background: var(--color-bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
        }

        .trend-item:hover {
            border-color: var(--color-border-strong);
            background: var(--color-bg-raised);
        }

        .trend-item .trend-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            background: var(--color-accent-soft);
            color: var(--color-accent);
        }

        /* CTA section */
        .cta-box {
            background: linear-gradient(135deg, #11161D 0%, #1E2630 60%, #0B0F12 100%);
            border: 1px solid rgba(0, 229, 160, 0.2);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(0, 229, 160, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text-primary);
            position: relative;
        }

        .cta-box p {
            font-size: 14px;
            color: var(--color-text-secondary);
            position: relative;
        }

        /* Data visual card */
        .data-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .data-card .data-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 14px;
        }

        .data-card .data-row:last-child {
            border-bottom: none;
        }

        .data-card .data-label {
            color: var(--color-text-secondary);
        }

        .data-card .data-value {
            font-weight: 700;
            color: var(--color-text-primary);
        }

        .data-card .data-value.accent {
            color: var(--color-accent);
        }

        .data-card .data-value.amber {
            color: var(--color-amber);
        }

        /* Footer */
        .site-footer {
            background: #080B0E;
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text-primary);
        }

        .footer-brand span {
            color: var(--color-accent);
        }

        .footer-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 400px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 12px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--color-text-secondary);
            padding: 6px 0;
            transition: color var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--color-text-secondary);
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
        }

        .footer-bottom a {
            color: var(--color-text-secondary);
            transition: color var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid .col-span-4 {
                grid-column: span 6;
            }
            .card-grid .col-span-3 {
                grid-column: span 6;
            }
            .nav-desktop {
                gap: 2px;
            }
            .nav-desktop a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-header h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .mobile-nav.open {
                display: flex;
            }
            .mobile-nav {
                display: none;
            }
            .card-grid .col-span-6 {
                grid-column: span 12;
            }
            .card-grid .col-span-4 {
                grid-column: span 12;
            }
            .card-grid .col-span-3 {
                grid-column: span 12;
            }
            .article-item {
                flex-direction: column;
                padding: 16px;
            }
            .article-item .article-image {
                width: 100%;
            }
            .section-title {
                font-size: 22px;
            }
            .page-header h1 {
                font-size: 26px;
            }
            .cta-box {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 60px;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }
            .page-header h1 {
                font-size: 22px;
            }
            .info-card {
                padding: 16px;
            }
            .info-card .card-excerpt {
                font-size: 13px;
            }
            .faq-item summary {
                padding: 16px;
                font-size: 14px;
            }
            .faq-item .faq-answer {
                margin-left: 16px;
                padding-left: 12px;
                padding-right: 16px;
            }
            section {
                padding-top: 28px;
                padding-bottom: 28px;
            }
        }

/* roulang page: category5 */
:root {
            --color-bg-deep: #0B0F12;
            --color-bg-card: #151C24;
            --color-bg-raised: #1E2630;
            --color-accent: #00E5A0;
            --color-accent-glow: rgba(0, 229, 160, 0.35);
            --color-accent-soft: rgba(0, 229, 160, 0.08);
            --color-amber: #FFB400;
            --color-amber-glow: rgba(255, 180, 0, 0.4);
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #9AA5B1;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 8px 20px rgba(0, 0, 0, 0.2);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

        :root {
            --color-bg-deep: #0B0F12;
            --color-bg-card: #151C24;
            --color-bg-raised: #1E2630;
            --color-accent: #00E5A0;
            --color-accent-glow: rgba(0, 229, 160, 0.35);
            --color-accent-soft: rgba(0, 229, 160, 0.08);
            --color-amber: #FFB400;
            --color-amber-glow: rgba(255, 180, 0, 0.4);
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #9AA5B1;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 8px 20px rgba(0, 0, 0, 0.2);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(11, 15, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }

        .site-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent 60%, var(--color-accent));
            opacity: 0.7;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--color-text-primary);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0F12;
            font-size: 16px;
            font-weight: 900;
        }

        .logo span {
            color: var(--color-accent);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-desktop a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
        }

        .nav-desktop a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }

        .nav-desktop a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
        }

        .nav-desktop a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-accent-glow);
        }

        .nav-cta {
            background: var(--color-amber);
            color: #0B0F12 !important;
            font-weight: 700;
            padding: 10px 18px !important;
            border-radius: var(--radius-md) !important;
            letter-spacing: 0.3px;
        }

        .nav-cta:hover {
            background: #FFC93D !important;
            color: #0B0F12 !important;
            box-shadow: 0 0 20px var(--color-amber-glow);
        }

        .nav-cta.active::after {
            display: none !important;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-strong);
            color: var(--color-text-primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
        }

        .mobile-nav {
            display: none;
            background-color: rgba(11, 15, 18, 0.98);
            border-bottom: 1px solid var(--color-border);
            padding: 12px 16px 16px;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav a {
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
        }

        .mobile-nav a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
            background: var(--color-accent-soft);
        }

        .mobile-nav a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }

        .mobile-nav.open {
            display: flex;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .divider {
            color: var(--color-border-strong);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 500;
        }

        /* Page Header */
        .page-header {
            padding: 48px 0 32px;
            border-bottom: 1px solid var(--color-border);
            background: linear-gradient(180deg, rgba(0, 229, 160, 0.03) 0%, transparent 100%);
        }

        .page-header h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            color: var(--color-text-primary);
        }

        .page-header .h1-accent {
            color: var(--color-accent);
            text-shadow: 0 0 20px var(--color-accent-glow);
        }

        .page-header .page-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.8;
        }

        /* Section Titles */
        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            color: var(--color-text-primary);
        }

        .section-title .accent {
            color: var(--color-accent);
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            max-width: 680px;
        }

        /* Cards Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .card-vertical {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .card-vertical:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--color-accent-glow);
        }

        .card-vertical .card-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-bg-raised);
            position: relative;
        }

        .card-vertical .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .card-vertical:hover .card-image img {
            transform: scale(1.04);
        }

        .card-vertical .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(11, 15, 18, 0.82);
            border: 1px solid var(--color-border-strong);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 999px;
            backdrop-filter: blur(8px);
        }

        .card-vertical .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .card-vertical .card-date {
            font-size: 12px;
            color: var(--color-text-secondary);
            letter-spacing: 0.5px;
        }

        .card-vertical .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-primary);
            line-height: 1.4;
        }

        .card-vertical .card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .card-vertical .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-base);
            margin-top: 4px;
        }

        .card-vertical .card-link:hover {
            color: var(--color-amber);
            gap: 10px;
        }

        /* Knowledge Article */
        .knowledge-article {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-card);
        }

        .knowledge-article h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--color-text-primary);
        }

        .knowledge-article h3 {
            font-size: 18px;
            font-weight: 600;
            margin-top: 28px;
            margin-bottom: 12px;
            color: var(--color-accent);
        }

        .knowledge-article p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        /* Trend Visual Cards */
        .trend-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .trend-card:hover {
            border-color: var(--color-accent-glow);
            box-shadow: var(--shadow-card-hover);
        }

        .trend-card .trend-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 8px;
        }

        .trend-card .trend-value {
            font-size: 34px;
            font-weight: 800;
            color: var(--color-text-primary);
            letter-spacing: -0.5px;
        }

        .trend-card .trend-value .unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-secondary);
            letter-spacing: 0;
        }

        .trend-bar {
            height: 6px;
            border-radius: 3px;
            background: var(--color-bg-raised);
            margin-top: 12px;
            overflow: hidden;
        }

        .trend-bar .fill {
            height: 100%;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-amber));
            transition: width 0.6s ease;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--color-border-strong);
        }

        .faq-item.active {
            border-left: 3px solid var(--color-accent);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            user-select: none;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: transform var(--transition-base);
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--color-accent);
            color: #0B0F12;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px;
        }

        /* News Brief */
        .news-brief-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-brief-item {
            display: flex;
            gap: 16px;
            padding: 16px 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            align-items: flex-start;
        }

        .news-brief-item:hover {
            border-color: var(--color-accent-glow);
            box-shadow: var(--shadow-card);
        }

        .news-brief-date {
            flex-shrink: 0;
            padding: 6px 12px;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            white-space: nowrap;
            margin-top: 2px;
        }

        .news-brief-content {
            flex: 1;
        }

        .news-brief-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 4px;
        }

        .news-brief-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section-inner {
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.08) 0%, rgba(255, 180, 0, 0.05) 100%);
            border: 1px solid var(--color-accent-glow);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .cta-section-inner::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--color-accent-glow), transparent 70%);
            pointer-events: none;
        }

        .cta-section-inner h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text-primary);
        }

        .cta-section-inner p {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-amber);
            color: #0B0F12;
            font-weight: 700;
            font-size: 15px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
            box-shadow: 0 0 0 rgba(255, 180, 0, 0);
        }

        .btn-primary:hover {
            background: #FFC93D;
            color: #0B0F12;
            box-shadow: 0 0 24px var(--color-amber-glow);
            transform: translateY(-1px);
        }

        .btn-primary:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 15px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-accent-glow);
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
        }

        .btn-secondary:hover {
            background: var(--color-accent-soft);
            border-color: var(--color-accent);
            box-shadow: 0 0 16px var(--color-accent-glow);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        .btn-load-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--color-text-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-strong);
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
        }

        .btn-load-more:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-soft);
            box-shadow: 0 0 16px var(--color-accent-glow);
        }

        .btn-load-more:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        /* Footer */
        .site-footer {
            background: #0A0E11;
            border-top: 1px solid var(--color-border);
            padding-top: 48px;
            padding-bottom: 24px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--color-border);
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }

        .footer-brand span {
            color: var(--color-accent);
        }

        .footer-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--color-text-secondary);
            padding: 6px 0;
            transition: color var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            padding-top: 20px;
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .footer-bottom a {
            color: var(--color-text-secondary);
            transition: color var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .page-header h1 {
                font-size: 30px;
            }

            .knowledge-article {
                padding: 28px;
            }

            .cta-section-inner {
                padding: 36px 28px;
            }

            .cta-section-inner h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            section {
                padding-top: 48px;
                padding-bottom: 48px;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .page-header {
                padding: 32px 0 24px;
            }

            .page-header h1 {
                font-size: 26px;
            }

            .page-header .page-desc {
                font-size: 15px;
            }

            .section-title {
                font-size: 22px;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .knowledge-article {
                padding: 24px 20px;
            }

            .knowledge-article h2 {
                font-size: 20px;
            }

            .knowledge-article h3 {
                font-size: 16px;
            }

            .cta-section-inner {
                padding: 28px 20px;
            }

            .cta-section-inner h2 {
                font-size: 20px;
            }

            .news-brief-item {
                flex-direction: column;
                gap: 8px;
            }

            .trend-card .trend-value {
                font-size: 26px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            section {
                padding-top: 36px;
                padding-bottom: 36px;
            }

            .container {
                padding-left: 12px;
                padding-right: 12px;
            }

            .page-header h1 {
                font-size: 22px;
                line-height: 1.4;
            }

            .section-title {
                font-size: 19px;
            }

            .card-vertical .card-body {
                padding: 16px;
            }

            .card-vertical .card-title {
                font-size: 16px;
            }

            .card-vertical .card-desc {
                font-size: 13px;
            }

            .btn-primary,
            .btn-secondary,
            .btn-load-more {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 14px;
            }

            .knowledge-article {
                padding: 20px 16px;
            }

            .knowledge-article p {
                font-size: 14px;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer {
                padding: 0 16px;
                font-size: 13px;
            }

            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }

            .cta-section-inner {
                padding: 24px 16px;
                border-radius: var(--radius-md);
            }

            .cta-section-inner h2 {
                font-size: 18px;
            }

            .cta-section-inner p {
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --color-bg-deep: #0B0F12;
            --color-bg-card: #151C24;
            --color-bg-raised: #1E2630;
            --color-accent: #00E5A0;
            --color-accent-glow: rgba(0, 229, 160, 0.35);
            --color-accent-soft: rgba(0, 229, 160, 0.08);
            --color-amber: #FFB400;
            --color-amber-glow: rgba(255, 180, 0, 0.4);
            --color-amber-soft: rgba(255, 180, 0, 0.08);
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #9AA5B1;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 8px 20px rgba(0, 0, 0, 0.2);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
        }
        img {
            max-width: 100%;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }
        input, textarea, select {
            font-family: inherit;
            outline: none;
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding-top: 56px;
            padding-bottom: 56px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(11, 15, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }
        .site-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent 60%, var(--color-accent));
            opacity: 0.7;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--color-text-primary);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0F12;
            font-size: 16px;
            font-weight: 900;
        }
        .logo span {
            color: var(--color-accent);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-desktop a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
        }
        .nav-desktop a:hover {
            color: var(--color-text-primary);
            background: var(--color-accent-soft);
        }
        .nav-desktop a.active {
            color: var(--color-accent);
            text-shadow: 0 0 12px var(--color-accent-glow);
        }
        .nav-desktop a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--color-accent-glow);
        }
        .nav-cta {
            background: var(--color-amber);
            color: #0B0F12 !important;
            font-weight: 700;
            padding: 10px 18px !important;
            border-radius: var(--radius-md) !important;
            letter-spacing: 0.3px;
            margin-left: 8px;
        }
        .nav-cta:hover {
            background: #FFC93D !important;
            color: #0B0F12 !important;
            box-shadow: 0 0 20px var(--color-amber-glow);
        }
        .nav-cta.active::after {
            display: none !important;
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-strong);
            color: var(--color-text-primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: rgba(11, 15, 18, 0.98);
            border-bottom: 1px solid var(--color-border-strong);
            padding: 12px 24px 20px;
        }
        .mobile-nav a {
            padding: 12px 8px;
            font-size: 15px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border);
            font-weight: 500;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--color-accent);
            text-shadow: 0 0 10px var(--color-accent-glow);
        }
        .site-footer {
            background-color: #080B0E;
            border-top: 1px solid var(--color-border);
            padding-top: 48px;
            padding-bottom: 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--color-border);
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--color-accent);
        }
        .footer-desc {
            color: var(--color-text-secondary);
            font-size: 14px;
            max-width: 400px;
            line-height: 1.75;
        }
        .footer-col h4 {
            font-size: 14px;
            color: var(--color-text-primary);
            margin-bottom: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: var(--color-text-secondary);
            font-size: 14px;
            padding: 6px 0;
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            align-items: center;
            padding-top: 20px;
            font-size: 13px;
            color: var(--color-text-secondary);
        }
        .footer-bottom a {
            color: var(--color-text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .sep {
            color: var(--color-border-strong);
        }
        .breadcrumb .current {
            color: var(--color-accent);
        }

        /* Page Hero */
        .page-hero {
            padding: 40px 0 32px;
        }
        .page-hero h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .page-hero h1 .accent {
            color: var(--color-accent);
            text-shadow: 0 0 20px var(--color-accent-glow);
        }
        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 800px;
            line-height: 1.85;
            margin-bottom: 24px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .hero-meta .badge {
            background: var(--color-accent-soft);
            color: var(--color-accent);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(0, 229, 160, 0.15);
        }
        .hero-meta .badge.amber {
            background: var(--color-amber-soft);
            color: var(--color-amber);
            border-color: rgba(255, 180, 0, 0.15);
        }

        /* Lottery Ball */
        .ball {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 15px;
            color: #fff;
            margin: 0 3px;
            letter-spacing: 0;
        }
        .ball-red { background: radial-gradient(circle at 35% 35%, #ff6b6b, #c0392b); }
        .ball-blue { background: radial-gradient(circle at 35% 35%, #5dade2, #1f618d); }
        .ball-green { background: radial-gradient(circle at 35% 35%, #58d68d, #1e8449); }
        .ball-amber { background: radial-gradient(circle at 35% 35%, #f7c948, #d4a017); }
        .ball-purple { background: radial-gradient(circle at 35% 35%, #bb8fce, #7d3c98); }

        /* Result Cards Grid */
        .result-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
        }
        .result-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .result-card:hover {
            transform: translateY(-2px);
            border-color: var(--color-accent-glow);
            box-shadow: var(--shadow-card-hover);
        }
        .result-card .card-img {
            aspect-ratio: 16/7;
            overflow: hidden;
            position: relative;
            background: var(--color-bg-raised);
        }
        .result-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .result-card:hover .card-img img {
            transform: scale(1.04);
        }
        .result-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(11, 15, 18, 0.85);
            color: var(--color-accent);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            border: 1px solid var(--color-accent-glow);
        }
        .result-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .result-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .result-card .card-nums {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px;
            margin-bottom: 12px;
        }
        .result-card .card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }
        .result-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }
        .result-card .card-date {
            font-size: 13px;
            color: var(--color-text-secondary);
        }
        .result-card .card-link {
            color: var(--color-accent);
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .result-card .card-link:hover {
            text-shadow: 0 0 10px var(--color-accent-glow);
        }

        /* Trend Visualization */
        .trend-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
            gap: 8px;
            margin-top: 20px;
        }
        .trend-item {
            text-align: center;
        }
        .trend-item .trend-num {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-primary);
            background: var(--color-bg-raised);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 6px;
            border: 1px solid var(--color-border-strong);
        }
        .trend-item .trend-bar {
            width: 100%;
            height: 80px;
            background: var(--color-bg-raised);
            border-radius: 4px;
            display: flex;
            align-items: flex-end;
            overflow: hidden;
            margin-bottom: 4px;
        }
        .trend-item .trend-bar .fill {
            width: 100%;
            background: linear-gradient(180deg, var(--color-accent), transparent);
            border-radius: 4px 4px 0 0;
            transition: height 0.8s ease;
        }
        .trend-item .trend-label {
            font-size: 11px;
            color: var(--color-text-secondary);
        }

        /* Knowledge Article */
        .article-content {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            max-width: 860px;
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 20px;
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-top: 28px;
            margin-bottom: 12px;
        }
        .article-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
        }
        .article-content ul {
            list-style: none;
            padding: 0;
            margin: 0 0 14px;
        }
        .article-content ul li {
            position: relative;
            padding-left: 20px;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: 8px;
        }
        .article-content ul li::before {
            content: "•";
            position: absolute;
            left: 4px;
            color: var(--color-accent);
            font-weight: 700;
        }

        /* FAQ Styles */
        .faq-list {
            max-width: 820px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border-strong);
        }
        .faq-item.open {
            border-color: var(--color-accent-glow);
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.08);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            text-align: left;
            background: none;
            gap: 12px;
        }
        .faq-question .faq-icon {
            color: var(--color-accent);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* News Brief */
        .news-brief {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 780px;
        }
        .news-brief-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: all var(--transition-base);
        }
        .news-brief-item:hover {
            border-color: var(--color-accent-glow);
            transform: translateX(2px);
        }
        .news-brief-item .news-date {
            font-size: 13px;
            color: var(--color-amber);
            font-weight: 600;
            white-space: nowrap;
            min-width: 72px;
            padding-top: 2px;
        }
        .news-brief-item .news-text {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .news-brief-item .news-text strong {
            color: var(--color-text-primary);
            font-weight: 600;
        }

        /* CTA Banner */
        .cta-banner {
            background: var(--color-bg-card);
            border: 1px solid var(--color-accent-glow);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 0 40px rgba(0, 229, 160, 0.06);
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(0, 229, 160, 0.05), transparent 60%);
            pointer-events: none;
        }
        .cta-banner h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            position: relative;
        }
        .cta-banner p {
            color: var(--color-text-secondary);
            font-size: 15px;
            margin-bottom: 20px;
            position: relative;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
        }
        .btn-primary {
            background: var(--color-amber);
            color: #0B0F12;
            border: none;
        }
        .btn-primary:hover {
            background: #FFC93D;
            box-shadow: 0 0 24px var(--color-amber-glow);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-accent);
            border: 1px solid var(--color-accent-glow);
        }
        .btn-outline:hover {
            background: var(--color-accent-soft);
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.15);
        }
        .btn:focus-visible {
            outline: 2px solid rgba(0, 229, 160, 0.8);
            outline-offset: 2px;
        }

        /* Section titles */
        .section-head {
            margin-bottom: 32px;
        }
        .section-head .eyebrow {
            font-size: 13px;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 8px;
            font-weight: 600;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            line-height: 1.4;
        }
        .section-head p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-top: 10px;
            max-width: 720px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .result-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .mobile-nav.show {
                display: flex;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .article-content {
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .result-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner h3 {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            section {
                padding-top: 36px;
                padding-bottom: 36px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .ball {
                width: 30px;
                height: 30px;
                font-size: 13px;
                margin: 0 2px;
            }
            .trend-grid {
                grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
                gap: 6px;
            }
            .trend-item .trend-num {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }
            .trend-item .trend-bar {
                height: 56px;
            }
            .news-brief-item {
                flex-direction: column;
                gap: 6px;
            }
        }