/* roulang page: index */
:root {
            --color-primary: #E53935;
            --color-primary-hover: #C62828;
            --color-primary-light: #FFEBEE;
            --color-accent: #FF6D00;
            --color-accent-gold: #F9A825;
            --color-dark: #0f1119;
            --color-dark-2: #1a1d2e;
            --color-dark-3: #222640;
            --color-dark-4: #2a2f45;
            --color-surface: #ffffff;
            --color-surface-alt: #f5f6fa;
            --color-text: #1a1d2e;
            --color-text-secondary: #5a5f72;
            --color-text-muted: #8b8fa3;
            --color-text-light: #b0b5c9;
            --color-border: #e2e5ef;
            --color-border-light: #eef0f6;
            --color-success: #2E7D32;
            --color-live: #00c853;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.16), 0 8px 20px rgba(0, 0, 0, 0.08);
            --shadow-glow: 0 0 40px rgba(229, 57, 53, 0.25);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-surface);
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ============ HEADER / NAV ============ */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: all var(--transition-base);
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
        }
        .header.scrolled {
            border-bottom-color: var(--color-border-light);
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 24px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--color-dark);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover {
            opacity: 0.8;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary) 0%, #c62828 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(229, 57, 53, 0.3);
        }
        .logo-text {
            font-family: var(--font-display);
            font-weight: 700;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--color-primary);
            color: #fff;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
            box-shadow: 0 2px 8px rgba(229, 57, 53, 0.25);
        }
        .nav-cta:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 4px 16px rgba(229, 57, 53, 0.35);
            transform: translateY(-1px);
        }
        .nav-cta:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-text);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-toggle:hover {
            background: var(--color-surface-alt);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* Mobile nav */
        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 16px 20px;
                transform: translateX(100%);
                transition: transform var(--transition-slow);
                overflow-y: auto;
                z-index: 999;
            }
            .nav-list.open {
                transform: translateX(0);
            }
            .nav-link {
                padding: 14px 18px;
                border-radius: var(--radius-md);
                font-size: 1rem;
            }
            .nav-cta {
                margin-top: 8px;
                justify-content: center;
                padding: 14px 20px;
                border-radius: var(--radius-md);
                font-size: 1rem;
            }
            .nav-toggle {
                display: flex;
            }
        }

        /* ============ HERO ============ */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            overflow: hidden;
            background: var(--color-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            filter: brightness(0.45) saturate(0.9);
            transform: scale(1.04);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg,
                    rgba(15, 17, 25, 0.55) 0%,
                    rgba(15, 17, 25, 0.7) 40%,
                    rgba(15, 17, 25, 0.88) 100%);
        }
        .hero-particles {
            position: absolute;
            inset: 0;
            z-index: 1;
            pointer-events: none;
            opacity: 0.35;
            background:
                radial-gradient(ellipse at 25% 30%, rgba(229, 57, 53, 0.35) 0%, transparent 55%),
                radial-gradient(ellipse at 70% 60%, rgba(249, 168, 37, 0.2) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(229, 57, 53, 0.15) 0%, transparent 45%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 60px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            font-size: 0.82rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
            backdrop-filter: blur(4px);
        }
        .hero-badge .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-live);
            animation: pulse-dot 1.6s ease-in-out infinite;
            box-shadow: 0 0 8px rgba(0, 200, 83, 0.6);
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.45;
                transform: scale(1.7);
            }
        }
        .hero h1 {
            font-family: var(--font-display);
            font-size: clamp(2.2rem, 4.5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.18;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero h1 .highlight {
            color: #ff5252;
            position: relative;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-base);
            white-space: nowrap;
            text-align: center;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .btn:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            background: #ff5252;
            box-shadow: 0 0 48px rgba(229, 57, 53, 0.35);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .hero-stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: auto;
                padding-bottom: 40px;
            }
            .hero-content {
                padding: 40px 0;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats-row {
                gap: 20px;
            }
            .hero-stat-num {
                font-size: 1.4rem;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
        }

        /* ============ SECTION COMMON ============ */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-primary);
            margin-bottom: 8px;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: var(--color-primary-light);
        }
        .section-title {
            font-family: var(--font-display);
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 700;
            color: var(--color-dark);
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 520px;
            margin: 0 auto;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ============ LIVE TICKER ============ */
        .live-ticker-section {
            background: var(--color-dark-2);
            padding: 0;
            overflow: hidden;
            border-bottom: 1px solid var(--color-dark-3);
        }
        .live-ticker-bar {
            display: flex;
            align-items: center;
            gap: 0;
            height: 52px;
            position: relative;
        }
        .live-ticker-label {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0 20px;
            height: 100%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.82rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
            z-index: 2;
        }
        .live-ticker-label .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #fff;
            animation: pulse-dot 1.4s ease-in-out infinite;
        }
        .live-ticker-scroll {
            flex: 1;
            overflow: hidden;
            position: relative;
            height: 100%;
            display: flex;
            align-items: center;
        }
        .live-ticker-track {
            display: flex;
            gap: 40px;
            white-space: nowrap;
            animation: ticker-scroll 28s linear infinite;
            padding: 0 20px;
            align-items: center;
        }
        .live-ticker-item {
            font-size: 0.85rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .live-ticker-item .score {
            font-weight: 700;
            color: #fff;
            background: var(--color-dark-3);
            padding: 3px 10px;
            border-radius: var(--radius-sm);
            font-size: 0.8rem;
            letter-spacing: 0.02em;
        }
        .live-ticker-item .minute {
            color: var(--color-live);
            font-weight: 600;
            font-size: 0.75rem;
        }
        @keyframes ticker-scroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }
        @media (max-width: 768px) {
            .live-ticker-bar {
                height: 44px;
            }
            .live-ticker-label {
                padding: 0 14px;
                font-size: 0.75rem;
            }
            .live-ticker-item {
                font-size: 0.78rem;
                gap: 6px;
            }
            .live-ticker-track {
                gap: 24px;
            }
        }

        /* ============ FEATURES ============ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon-wrap {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-primary);
            margin-bottom: 16px;
            transition: all var(--transition-base);
        }
        .feature-card:hover .feature-icon-wrap {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(229, 57, 53, 0.3);
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-dark);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .feature-card {
                padding: 24px 20px;
            }
        }

        /* ============ SERVICES ============ */
        .services-section {
            background: var(--color-surface-alt);
        }
        .service-block {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 60px;
        }
        .service-block:last-child {
            margin-bottom: 0;
        }
        .service-block.reverse {
            flex-direction: row-reverse;
        }
        .service-img-wrap {
            flex: 0 0 46%;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
            aspect-ratio: 4/3;
            min-width: 280px;
        }
        .service-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .service-img-wrap:hover img {
            transform: scale(1.04);
        }
        .service-img-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            background: rgba(15, 17, 25, 0.8);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            backdrop-filter: blur(4px);
            z-index: 2;
        }
        .service-body {
            flex: 1;
            min-width: 260px;
        }
        .service-body .tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.04em;
            margin-bottom: 6px;
        }
        .service-body h2 {
            font-family: var(--font-display);
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-dark);
            letter-spacing: -0.01em;
        }
        .service-body p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .service-body .btn-sm {
            padding: 10px 22px;
            font-size: 0.85rem;
            border-radius: var(--radius-full);
            font-weight: 600;
            background: var(--color-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(229, 57, 53, 0.2);
        }
        .service-body .btn-sm:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 6px 20px rgba(229, 57, 53, 0.3);
            transform: translateY(-1px);
        }

        @media (max-width: 768px) {
            .service-block,
            .service-block.reverse {
                flex-direction: column;
                gap: 24px;
                margin-bottom: 40px;
            }
            .service-img-wrap {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16/10;
                min-width: auto;
            }
            .service-body h2 {
                font-size: 1.35rem;
            }
        }

        /* ============ RANKINGS ============ */
        .rankings-section {
            background: var(--color-dark-2);
            color: #fff;
        }
        .rankings-section .section-title {
            color: #fff;
        }
        .rankings-section .section-subtitle {
            color: var(--color-text-light);
        }
        .rankings-section .section-label {
            background: rgba(255, 255, 255, 0.1);
            color: var(--color-accent-gold);
        }
        .rankings-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .ranking-card {
            background: var(--color-dark-3);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--color-dark-4);
            transition: all var(--transition-base);
            position: relative;
        }
        .ranking-card:hover {
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .ranking-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }
        .ranking-card-title {
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            color: #fff;
        }
        .ranking-card-badge {
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            letter-spacing: 0.03em;
        }
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            background: var(--color-dark-4);
            transition: background var(--transition-fast);
        }
        .ranking-item:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .ranking-pos {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            font-size: 0.75rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }
        .ranking-pos.top {
            background: var(--color-accent-gold);
            color: var(--color-dark);
        }
        .ranking-name {
            flex: 1;
            font-size: 0.85rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
        }
        .ranking-val {
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--color-accent-gold);
        }

        @media (max-width: 1024px) {
            .rankings-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .rankings-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ============ PROCESS ============ */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .process-item {
            text-align: center;
            padding: 28px 18px;
            border-radius: var(--radius-lg);
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
        }
        .process-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-3px);
        }
        .process-step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            transition: all var(--transition-base);
        }
        .process-item:hover .process-step-num {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(229, 57, 53, 0.35);
        }
        .process-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-dark);
        }
        .process-item p {
            font-size: 0.82rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        @media (max-width: 1024px) {
            .process-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .process-list {
                grid-template-columns: 1fr;
                gap: 10px;
            }
        }

        /* ============ DATA SHOWCASE ============ */
        .data-showcase {
            background: var(--color-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .data-showcase .section-title {
            color: #fff;
        }
        .data-showcase .section-subtitle {
            color: var(--color-text-light);
        }
        .data-showcase .section-label {
            background: rgba(255, 255, 255, 0.08);
            color: #ff8a80;
        }
        .data-showcase-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            filter: blur(2px);
        }
        .data-showcase-inner {
            position: relative;
            z-index: 1;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .data-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            backdrop-filter: blur(4px);
            transition: all var(--transition-base);
        }
        .data-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .data-card-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            display: block;
        }
        .data-card-num {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 4px;
        }
        .data-card-label {
            font-size: 0.85rem;
            color: var(--color-text-light);
            letter-spacing: 0.02em;
        }

        @media (max-width: 1024px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .data-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .data-card-num {
                font-size: 1.7rem;
            }
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-surface);
            transition: all var(--transition-fast);
        }
        .faq-item.active {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-dark);
            text-align: left;
            transition: all var(--transition-fast);
            gap: 12px;
            cursor: pointer;
            background: none;
            border: none;
            font-family: inherit;
            letter-spacing: 0.01em;
        }
        .faq-question:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: -2px;
        }
        .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-size: 0.85rem;
            color: var(--color-text-muted);
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-surface-alt);
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: var(--color-primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(160deg, var(--color-dark) 0%, #1a1030 50%, var(--color-dark-2) 100%);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-bg-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(229, 57, 53, 0.3) 0%, transparent 70%);
            top: -150px;
            left: 50%;
            transform: translateX(-50%);
            pointer-events: none;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-family: var(--font-display);
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .cta-content p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .cta-content .btn {
            font-size: 1rem;
            padding: 15px 36px;
            box-shadow: var(--shadow-glow);
        }
        .cta-content .btn:hover {
            box-shadow: 0 0 52px rgba(229, 57, 53, 0.4);
        }

        /* ============ FOOTER ============ */
        .footer {
            background: var(--color-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
            border-top: 1px solid var(--color-dark-3);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .footer-col p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: var(--color-text-light);
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--color-text-light);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid var(--color-dark-3);
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--color-dark-3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-light);
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }
        .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ============ BACK TO TOP ============ */
        .back-to-top {
            position: fixed;
            bottom: 28px;
            right: 28px;
            z-index: 900;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: var(--shadow-lg);
            opacity: 0;
            transform: translateY(16px);
            pointer-events: none;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .back-to-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--color-primary-hover);
            box-shadow: var(--shadow-xl);
            transform: translateY(-2px);
        }
        .back-to-top:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }