/* roulang page: index */
:root {
            --color-primary: #1E1E1E;
            --color-accent: #00B4D8;
            --color-accent-hover: #0096B0;
            --color-accent-light: rgba(0, 180, 216, 0.08);
            --color-highlight: #FF6B35;
            --color-white: #FFFFFF;
            --color-bg: #FFFFFF;
            --color-bg-light: #F7F8FA;
            --color-bg-dark: #1A1A1A;
            --color-text: #1E1E1E;
            --color-text-secondary: #6B7280;
            --color-text-light: #9CA3AF;
            --color-border: #E5E7EB;
            --color-border-light: #F0F0F0;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 16px;
            --radius-pill: 20px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.14);
            --transition-fast: 0.2s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.3s ease;
            --max-width: 1200px;
            --header-height: 64px;
            --section-gap: 100px;
            --section-gap-mobile: 60px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            font-weight: 400;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(30, 30, 30, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-normal), border-color var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(30, 30, 30, 0.95);
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--color-white);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-brand .brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-white);
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .header-nav a:hover {
            color: var(--color-white);
            background: rgba(255, 255, 255, 0.06);
        }

        .header-nav a.active {
            color: var(--color-accent);
            background: transparent;
        }

        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
        }

        .header-nav-cta {
            background: var(--color-accent) !important;
            color: var(--color-white) !important;
            border-radius: var(--radius-sm) !important;
            padding: 8px 18px !important;
            font-weight: 600 !important;
            margin-left: 8px;
        }

        .header-nav-cta:hover {
            background: var(--color-accent-hover) !important;
            color: var(--color-white) !important;
        }

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

        /* Hamburger */
        .hamburger-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: transparent;
            border: none;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-white);
            border-radius: 2px;
            transition: transform var(--transition-normal), opacity var(--transition-normal);
        }

        .hamburger-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile Nav */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-normal);
        }
        .mobile-nav-overlay.show {
            opacity: 1;
        }

        .mobile-nav-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: var(--color-primary);
            z-index: 1000;
            padding: 80px 28px 40px;
            display: flex;
            flex-direction: column;
            gap: 0;
            transition: right var(--transition-slow);
            overflow-y: auto;
        }
        .mobile-nav-panel.show {
            right: 0;
        }

        .mobile-nav-panel a {
            display: block;
            padding: 14px 0;
            font-size: 17px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: color var(--transition-fast);
            text-align: left;
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            color: var(--color-accent);
        }
        .mobile-nav-panel .mobile-cta {
            margin-top: 20px;
            background: var(--color-accent);
            color: var(--color-white);
            text-align: center;
            border-radius: var(--radius-sm);
            padding: 14px 20px;
            border-bottom: none;
            font-weight: 600;
        }
        .mobile-nav-panel .mobile-cta:hover {
            background: var(--color-accent-hover);
            color: var(--color-white);
        }

        /* Hero Section */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
            overflow: hidden;
            padding: 120px 24px 80px;
        }

        .hero-bg-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.25;
            z-index: 0;
            pointer-events: none;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at center, rgba(30, 30, 30, 0.3) 0%, rgba(10, 10, 20, 0.7) 100%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            width: 100%;
        }

        .hero-content h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            animation: fadeInUp 0.6s ease-out both;
        }

        .hero-content .hero-subtitle {
            font-size: 18px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 36px;
            line-height: 1.6;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            animation: fadeInUp 0.6s ease-out 0.1s both;
        }

        .hero-search-wrapper {
            animation: fadeInUp 0.6s ease-out 0.2s both;
            margin-bottom: 24px;
        }

        .hero-search-box {
            display: flex;
            align-items: center;
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: 6px 6px 6px 20px;
            box-shadow: var(--shadow-xl);
            transition: box-shadow var(--transition-normal);
            max-width: 560px;
            margin: 0 auto;
        }

        .hero-search-box:focus-within {
            box-shadow: 0 16px 48px rgba(0, 180, 216, 0.25);
        }

        .hero-search-box input {
            flex: 1;
            font-size: 16px;
            color: var(--color-text);
            padding: 12px 0;
            background: transparent;
            border: none;
            outline: none;
            min-width: 0;
        }

        .hero-search-box input::placeholder {
            color: var(--color-text-light);
        }

        .hero-search-btn {
            background: var(--color-accent);
            color: var(--color-white);
            padding: 12px 28px;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: background var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .hero-search-btn:hover {
            background: var(--color-accent-hover);
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            animation: fadeInUp 0.6s ease-out 0.3s both;
            margin-bottom: 28px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.15);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .hero-tag:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.35);
            color: var(--color-white);
            transform: translateY(-2px);
        }

        .hero-cta-row {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 0.6s ease-out 0.35s both;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--color-accent);
            color: var(--color-white);
            border: 2px solid var(--color-accent);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(0, 180, 216, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-white);
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--color-white);
            color: var(--color-white);
            transform: translateY(-1px);
        }

        .hero-scroll-indicator {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            cursor: pointer;
            animation: pulseBounce 2s ease-in-out infinite;
        }
        .hero-scroll-indicator svg {
            width: 28px;
            height: 28px;
            stroke: rgba(255, 255, 255, 0.7);
            fill: none;
            stroke-width: 2;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes pulseBounce {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        @keyframes pulseScale {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        /* Section Common */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
        }

        /* Latest Updates Section */
        .updates-section {
            background: var(--color-bg);
        }

        .updates-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .updates-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .update-item {
            display: flex;
            align-items: baseline;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .update-item:hover {
            padding-left: 8px;
            border-bottom-color: var(--color-accent);
        }
        .update-item .update-date {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-light);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 72px;
        }
        .update-item .update-title {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.5;
            transition: color var(--transition-fast);
        }
        .update-item:hover .update-title {
            color: var(--color-accent);
        }
        .update-item .update-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: var(--radius-pill);
            background: var(--color-highlight);
            color: var(--color-white);
            flex-shrink: 0;
            margin-left: auto;
        }

        .updates-highlight {
            background: var(--color-bg-light);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .updates-highlight img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md);
        }
        .updates-highlight h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
        }
        .updates-highlight p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .updates-highlight .highlight-link {
            font-weight: 600;
            color: var(--color-accent);
            font-size: 15px;
            align-self: flex-start;
            transition: color var(--transition-fast);
        }
        .updates-highlight .highlight-link:hover {
            color: var(--color-accent-hover);
        }

        /* FAQ / Quick Answers Section */
        .faq-section {
            background: var(--color-bg-light);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-normal);
        }
        .faq-item.open {
            background: var(--color-white);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            user-select: none;
            gap: 16px;
            transition: color var(--transition-fast);
        }
        .faq-item.open .faq-question {
            color: var(--color-accent);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-bg-light);
            transition: all var(--transition-normal);
            font-size: 18px;
            font-weight: 300;
            color: var(--color-text-secondary);
        }
        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: var(--color-white);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* Pricing / Tier Comparison */
        .pricing-section {
            background: var(--color-bg);
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 960px;
            margin: 0 auto;
            align-items: stretch;
        }

        .pricing-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            gap: 20px;
            transition: all var(--transition-normal);
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .pricing-card.featured {
            border: 2px solid var(--color-accent);
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            z-index: 2;
        }
        .pricing-card.featured:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
        }
        .pricing-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-highlight);
            color: var(--color-white);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .pricing-card h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text);
            text-align: center;
        }
        .pricing-card .pricing-tier-label {
            font-size: 14px;
            color: var(--color-text-secondary);
            text-align: center;
            margin-top: -12px;
        }
        .pricing-features {
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }
        .pricing-feature {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.5;
        }
        .pricing-feature .feature-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--color-accent-light);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            margin-top: 2px;
        }
        .pricing-card .btn {
            width: 100%;
            text-align: center;
        }
        .pricing-card.featured .btn {
            background: var(--color-accent);
            color: var(--color-white);
            border: 2px solid var(--color-accent);
        }
        .pricing-card.featured .btn:hover {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
        }
        .pricing-card:not(.featured) .btn {
            background: transparent;
            color: var(--color-accent);
            border: 2px solid var(--color-accent);
        }
        .pricing-card:not(.featured) .btn:hover {
            background: var(--color-accent);
            color: var(--color-white);
        }

        /* Info / News Section */
        .info-section {
            background: var(--color-bg-light);
        }
        .info-layout {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 40px;
            align-items: start;
        }
        .info-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .info-list-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border-light);
            cursor: pointer;
            transition: all var(--transition-fast);
            align-items: flex-start;
        }
        .info-list-item:hover {
            padding-left: 6px;
        }
        .info-list-item .info-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--color-accent);
            flex-shrink: 0;
            min-width: 36px;
            line-height: 1;
            opacity: 0.6;
        }
        .info-list-item .info-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            transition: color var(--transition-fast);
        }
        .info-list-item:hover .info-content h3 {
            color: var(--color-accent);
        }
        .info-list-item .info-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }
        .info-sidebar {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--color-border);
            position: sticky;
            top: 90px;
        }
        .info-sidebar img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
        }
        .info-sidebar h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .info-sidebar p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .info-sidebar .sidebar-link {
            font-weight: 600;
            color: var(--color-accent);
            font-size: 14px;
            transition: color var(--transition-fast);
        }
        .info-sidebar .sidebar-link:hover {
            color: var(--color-accent-hover);
        }

        /* Timeline Section */
        .timeline-section {
            background: var(--color-bg);
        }
        .timeline {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
            border-radius: 1px;
        }
        .timeline-node {
            position: relative;
            padding-bottom: 36px;
        }
        .timeline-node:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -40px;
            top: 4px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-white);
            border: 3px solid var(--color-accent);
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: var(--color-accent);
        }
        .timeline-node.active .timeline-dot {
            background: var(--color-accent);
            color: var(--color-white);
        }
        .timeline-content {
            background: var(--color-bg-light);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .timeline-node.active .timeline-content {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-sm);
        }
        .timeline-content .timeline-time {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }
        .timeline-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .timeline-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .timeline-content .timeline-action {
            display: inline-block;
            margin-top: 8px;
            font-weight: 600;
            font-size: 14px;
            color: var(--color-accent);
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .timeline-content .timeline-action:hover {
            color: var(--color-accent-hover);
        }

        /* Safety Section */
        .safety-section {
            background: var(--color-bg-dark);
            color: var(--color-white);
        }
        .safety-section .section-header h2 {
            color: var(--color-white);
        }
        .safety-section .section-header .section-desc {
            color: rgba(255, 255, 255, 0.65);
        }
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .safety-card {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-normal);
        }
        .safety-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }
        .safety-card .safety-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: rgba(0, 180, 216, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-accent);
        }
        .safety-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 8px;
        }
        .safety-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-bg-dark);
            padding: 80px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-bg-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.12;
            z-index: 0;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-section .cta-subtitle {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 32px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .cta-section .btn {
            font-size: 16px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            color: var(--color-white);
            border: 2px solid var(--color-accent);
            font-weight: 700;
            animation: pulseScale 2.5s ease-in-out 2;
            animation-delay: 0.5s;
        }
        .cta-section .btn:hover {
            background: var(--color-white);
            color: var(--color-accent);
            border-color: var(--color-white);
            box-shadow: 0 8px 28px rgba(0, 180, 216, 0.4);
        }
        .cta-section .cta-link {
            display: inline-block;
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: color var(--transition-fast);
            cursor: pointer;
        }
        .cta-section .cta-link:hover {
            color: var(--color-white);
        }

        /* Footer */
        .site-footer {
            background: #141414;
            color: rgba(255, 255, 255, 0.65);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            padding: 6px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-white);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom .copyright-domain {
            color: rgba(255, 255, 255, 0.5);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 38px;
            }
            .hero-content .hero-subtitle {
                font-size: 16px;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .updates-grid {
                grid-template-columns: 1fr;
            }
            .info-layout {
                grid-template-columns: 1fr;
            }
            .info-sidebar {
                position: static;
            }
            .pricing-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 16px;
            }
            .pricing-card {
                padding: 24px 16px;
            }
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-content .hero-subtitle {
                font-size: 15px;
                margin-bottom: 24px;
            }
            .hero-search-box {
                flex-direction: column;
                padding: 12px;
                gap: 8px;
                border-radius: var(--radius-lg);
            }
            .hero-search-box input {
                width: 100%;
                text-align: center;
            }
            .hero-search-btn {
                width: 100%;
                text-align: center;
                border-radius: var(--radius-sm);
            }
            .hero-tags {
                gap: 6px;
            }
            .hero-tag {
                font-size: 12px;
                padding: 6px 12px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
            .pricing-card.featured {
                transform: translateY(0);
            }
            .pricing-card.featured:hover {
                transform: translateY(-4px);
            }
            .safety-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .safety-card {
                padding: 24px 16px;
            }
            .timeline {
                padding-left: 32px;
            }
            .timeline::before {
                left: 11px;
            }
            .timeline-dot {
                left: -32px;
                width: 24px;
                height: 24px;
                font-size: 10px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .updates-highlight {
                padding: 20px;
            }
            .updates-highlight img {
                height: 150px;
            }
            .faq-question {
                font-size: 16px;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
            .hero-cta-row {
                flex-direction: column;
                align-items: center;
            }
            .hero-cta-row .btn {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content .hero-subtitle {
                font-size: 14px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .safety-grid {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                max-width: 100%;
            }
            .info-list-item {
                flex-direction: column;
                gap: 6px;
            }
            .info-list-item .info-num {
                font-size: 20px;
            }
            .hero-section {
                padding: 100px 16px 60px;
            }
            .timeline {
                padding-left: 28px;
            }
            .timeline-dot {
                left: -28px;
                width: 20px;
                height: 20px;
            }
            .timeline::before {
                left: 9px;
            }
        }