/* ===== Design Variables ===== */
        :root {
            --bg-primary: #070F1C;
            --bg-secondary: #0C1B30;
            --bg-tertiary: #122540;
            --accent: #2EA8FF;
            --accent-rgb: 46, 168, 255;
            --accent-2: #7C5CFF;
            --accent-glow: rgba(46, 168, 255, 0.35);
            --text-primary: #EAF2FC;
            --text-secondary: #9FB3C8;
            --text-weak: #647D9C;
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-bg-strong: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.09);
            --border-color: rgba(255, 255, 255, 0.07);
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 36px rgba(46, 168, 255, 0.25);
            --spacing-section: 90px;
            --container-w: 1200px;
            --nav-h: 72px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-primary);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #6fc4ff;
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        summary {
            list-style: none;
            cursor: pointer;
        }
        summary::-webkit-details-marker {
            display: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Typography ===== */
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.12);
            border: 1px solid rgba(var(--accent-rgb), 0.25);
            padding: 5px 16px;
            border-radius: 100px;
            text-transform: uppercase;
        }
        .section-tag::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px var(--accent-glow);
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 32px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #2EA8FF, #1B7FDB);
            color: #fff;
            box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(var(--accent-rgb), 0.5);
            color: #fff;
        }
        .btn-glow {
            animation: glow-pulse 2.8s ease-in-out infinite;
        }
        @keyframes glow-pulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.3);
            }
            50% {
                box-shadow: 0 0 36px rgba(var(--accent-rgb), 0.55);
            }
        }
        .btn-outline {
            background: transparent;
            border-color: rgba(var(--accent-rgb), 0.5);
            color: var(--accent);
        }
        .btn-outline:hover {
            background: rgba(var(--accent-rgb), 0.1);
            border-color: var(--accent);
            transform: translateY(-2px);
            color: var(--accent);
        }
        .btn-block {
            width: 100%;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }
        .btn:active {
            transform: translateY(0) scale(0.97);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 200;
            padding: 0 16px;
        }
        .nav-container {
            max-width: calc(var(--container-w) - 20px);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(8, 17, 31, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: 100px;
            padding: 10px 22px 10px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .brand:hover {
            color: var(--text-primary);
        }
        .brand-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            border-radius: 10px;
            font-size: 18px;
            box-shadow: 0 0 16px rgba(var(--accent-rgb), 0.3);
        }
        .brand-text {
            font-size: 16px;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(var(--accent-rgb), 0.1);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.35), rgba(124, 92, 255, 0.25));
            box-shadow: 0 2px 14px rgba(var(--accent-rgb), 0.2);
        }
        .nav-cta {
            margin-left: 6px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            padding: 8px;
            background: rgba(var(--accent-rgb), 0.15);
            border: 1px solid var(--glass-border);
        }
        .nav-toggle span {
            display: block;
            height: 2px;
            width: 22px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 180px 0 100px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-bottom: 1px solid var(--border-color);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(5, 10, 20, 0.92) 10%, rgba(5, 10, 20, 0.75) 45%, rgba(7, 15, 28, 0.55) 80%, rgba(7, 15, 28, 0.75) 100%);
            z-index: 1;
        }
        .hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-primary), transparent);
            z-index: 1;
            pointer-events: none;
        }
        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }
        .hero-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.12);
            border: 1px solid rgba(var(--accent-rgb), 0.25);
            padding: 6px 18px;
            border-radius: 100px;
            margin-bottom: 22px;
        }
        .hero h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 16px;
        }
        .hero-subtitle {
            font-size: 18px;
            font-weight: 500;
            color: var(--accent);
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .hero-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 540px;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }
        .stat strong {
            display: block;
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            background: linear-gradient(135deg, #fff, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat span {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 4px;
            display: block;
        }

        /* Hero Demo Card */
        .hero-demo {
            display: flex;
            justify-content: center;
        }
        .demo-card {
            width: 100%;
            max-width: 420px;
            border-radius: 24px;
            padding: 30px;
            background: rgba(12, 25, 44, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .demo-card::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 140px;
            height: 140px;
            background: radial-gradient(circle, rgba(var(--accent-rgb), 0.25), transparent 70%);
            pointer-events: none;
        }
        .demo-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 22px;
        }
        .demo-header h3 {
            font-size: 18px;
            font-weight: 700;
        }
        .demo-live {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: #7ee2b8;
            background: rgba(52, 199, 123, 0.12);
            border-radius: 100px;
            padding: 3px 12px;
            border: 1px solid rgba(52, 199, 123, 0.25);
        }
        .demo-live i {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #34c77b;
            animation: live-blink 1.5s ease-in-out infinite;
        }
        @keyframes live-blink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }
        .demo-body {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }
        .select-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            padding: 12px 16px;
            font-size: 14px;
            color: var(--text-primary);
            transition: border-color 0.2s;
        }
        .select-box:hover {
            border-color: rgba(var(--accent-rgb), 0.4);
        }
        .demo-note {
            text-align: center;
            font-size: 12px;
            color: var(--text-weak);
            margin-top: 2px;
        }

        /* ===== Countdown Section ===== */
        .countdown-section {
            padding: 50px 0;
            background: linear-gradient(to right, #0A1428, #0E1D36, #0A1428);
            border-bottom: 1px solid var(--border-color);
        }
        .countdown-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }
        .countdown-info .section-tag {
            margin-bottom: 8px;
        }
        .countdown-info h2 {
            font-size: 22px;
            margin-bottom: 4px;
        }
        .countdown-info p {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .countdown-timer {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .time-box {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 14px 20px;
            min-width: 76px;
            text-align: center;
        }
        .time-box span {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-primary);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .time-box small {
            display: block;
            font-size: 12px;
            color: var(--text-weak);
            margin-top: 2px;
        }
        .time-sep {
            font-size: 28px;
            font-weight: 300;
            color: var(--text-weak);
        }
        .countdown-meta {
            text-align: center;
            background: rgba(var(--accent-rgb), 0.1);
            border: 1px solid rgba(var(--accent-rgb), 0.2);
            border-radius: var(--radius-md);
            padding: 12px 24px;
        }
        .countdown-meta span {
            display: block;
            font-size: 12px;
            color: var(--text-secondary);
        }
        .countdown-meta strong {
            font-size: 22px;
            color: var(--accent);
        }

        /* ===== Steps Section ===== */
        .steps-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-primary);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 52px;
        }
        .section-head .section-tag {
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .step-card {
            position: relative;
            border-radius: var(--radius-lg);
            padding: 40px 30px 30px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .step-card:hover {
            transform: translateY(-6px);
            border-color: rgba(var(--accent-rgb), 0.35);
            box-shadow: var(--shadow-lg);
            background: var(--glass-bg-strong);
        }
        .step-num {
            font-size: 42px;
            font-weight: 900;
            line-height: 1;
            background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.7), rgba(124, 92, 255, 0.6));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
            margin-bottom: 18px;
        }
        .step-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== Highlights Section ===== */
        .highlights-section {
            padding: var(--spacing-section) 0;
            background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
            border-top: 1px solid var(--border-color);
        }
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .highlight-card {
            border-radius: var(--radius-lg);
            padding: 28px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
            transition: all 0.3s ease;
        }
        .highlight-card:hover {
            transform: translateY(-5px);
            border-color: rgba(var(--accent-rgb), 0.35);
            box-shadow: var(--shadow-lg);
        }
        .highlight-card.feature-img {
            padding: 0;
            overflow: hidden;
        }
        .highlight-card.feature-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .highlight-card.feature-img:hover img {
            transform: scale(1.04);
        }
        .highlight-body {
            padding: 24px 26px 26px;
        }
        .highlight-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: rgba(var(--accent-rgb), 0.13);
            border: 1px solid rgba(var(--accent-rgb), 0.25);
            font-size: 22px;
            margin-bottom: 16px;
        }
        .highlight-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .highlight-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== Packages Section ===== */
        .packages-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-primary);
            border-top: 1px solid var(--border-color);
        }
        .packages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            align-items: stretch;
        }
        .package-card {
            border-radius: 24px;
            padding: 36px 30px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
        }
        .package-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .package-card.featured {
            background: linear-gradient(145deg, rgba(var(--accent-rgb), 0.14), rgba(124, 92, 255, 0.1));
            border-color: rgba(var(--accent-rgb), 0.45);
            box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.15);
            position: relative;
        }
        .package-card.featured::before {
            content: "热门推荐";
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 18px;
            border-radius: 100px;
            box-shadow: 0 4px 16px rgba(var(--accent-rgb), 0.3);
            letter-spacing: 0.05em;
            white-space: nowrap;
        }
        .package-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .package-price {
            font-size: 42px;
            font-weight: 900;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.2;
        }
        .package-price span {
            font-size: 15px;
            font-weight: 400;
            color: var(--text-weak);
        }
        .package-desc {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 18px;
        }
        .package-card ul {
            flex: 1;
            margin-bottom: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .package-card ul li {
            font-size: 14px;
            color: var(--text-secondary);
            padding-left: 24px;
            position: relative;
        }
        .package-card ul li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 700;
        }
        .package-card ul li.hidden {
            color: var(--text-weak);
        }
        .package-card ul li.hidden::before {
            content: "—";
            color: var(--text-weak);
        }

        /* ===== News Section ===== */
        .news-section {
            padding: var(--spacing-section) 0;
            background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
            border-top: 1px solid var(--border-color);
        }
        .news-layout {
            display: grid;
            grid-template-columns: 1.4fr 0.6fr;
            gap: 40px;
            align-items: start;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: block;
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
            border-radius: 12px;
            transition: all 0.25s ease;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background: rgba(var(--accent-rgb), 0.06);
            padding-left: 30px;
        }
        .news-date {
            display: inline-block;
            font-size: 12px;
            color: var(--text-weak);
            background: rgba(255, 255, 255, 0.05);
            padding: 2px 10px;
            border-radius: 6px;
            margin-bottom: 8px;
            letter-spacing: 0.04em;
        }
        .news-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .news-item:hover h3 {
            color: var(--accent);
        }
        .news-item p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            border-radius: var(--radius-lg);
            padding: 24px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
        }
        .sidebar-card.image-card {
            padding: 0;
            overflow: hidden;
        }
        .sidebar-card.image-card img {
            height: 180px;
            width: 100%;
            object-fit: cover;
        }
        .sidebar-card.image-card .sidebar-img-content {
            padding: 20px 24px 24px;
        }
        .sidebar-card h3 {
            font-size: 17px;
            margin-bottom: 14px;
        }
        .topic-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .topic-list a {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 6px 0;
            border-bottom: 1px dashed var(--border-color);
            transition: all 0.2s;
        }
        .topic-list a:last-child {
            border-bottom: none;
        }
        .topic-list a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            font-size: 12px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            padding: 4px 12px;
            border-radius: 100px;
            transition: all 0.2s;
            cursor: default;
        }
        .tag:hover {
            color: var(--accent);
            border-color: rgba(var(--accent-rgb), 0.4);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            text-align: center;
            border-top: 1px solid var(--border-color);
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6, 12, 24, 0.92), rgba(10, 22, 40, 0.82), rgba(7, 15, 28, 0.9));
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content .section-tag {
            margin-bottom: 16px;
        }
        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-content p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-primary);
            border-top: 1px solid var(--border-color);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(var(--accent-rgb), 0.3);
        }
        .faq-item[open] {
            background: var(--glass-bg-strong);
            border-color: rgba(var(--accent-rgb), 0.4);
            box-shadow: var(--shadow-lg);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            gap: 16px;
        }
        .faq-item summary::after {
            content: "+";
            font-size: 22px;
            font-weight: 300;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item p {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #050B14;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 50px;
            padding-bottom: 40px;
        }
        .footer-brand .brand-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            display: block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-links h4,
        .footer-contact h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-links a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 4px 0;
            transition: all 0.2s;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.9;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 70px;
            }
            .hero {
                padding: 150px 0 80px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-demo {
                order: -1;
            }
            .highlights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .packages-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 56px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: absolute;
                top: calc(100% + 10px);
                left: 16px;
                right: 16px;
                background: rgba(8, 17, 31, 0.95);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                border: 1px solid var(--glass-border);
                border-radius: 20px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                display: none;
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                text-align: center;
                padding: 12px 18px;
            }
            .nav-cta {
                display: none;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .countdown-wrap {
                flex-direction: column;
                text-align: center;
            }
            .countdown-timer {
                justify-content: center;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .highlights-grid {
                grid-template-columns: 1fr;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .cta-content h2 {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 26px;
                text-align: center;
            }
            .footer-brand p {
                margin: 0 auto;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .brand-text {
                font-size: 14px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 16px;
            }
            .nav-container {
                padding: 8px 14px;
                border-radius: 60px;
            }
            .hero {
                padding: 130px 0 60px;
            }
            .hero h1 {
                font-size: 24px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .time-box {
                padding: 10px 14px;
                min-width: 62px;
            }
            .time-box span {
                font-size: 24px;
            }
            .demo-card {
                padding: 22px;
            }
            .packages-grid {
                max-width: 400px;
            }
            .news-item {
                padding: 16px 14px;
            }
            .faq-item summary {
                font-size: 15px;
                padding: 15px 16px;
            }
            .faq-item p {
                padding: 0 16px 16px;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
            border-radius: 4px;
        }

        /* ===== Utility ===== */
        .text-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
        }

:root {
  --primary: #0a1029;
  --primary-light: #121b3a;
  --primary-dark: #060a1c;
  --accent: #00c2ff;
  --accent-2: #ffce4f;
  --accent-glow: rgba(0, 194, 255, 0.45);
  --text: #e8edf7;
  --text-muted: #9aa7c7;
  --text-dim: #6b7696;
  --border: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-bg-strong: rgba(255, 255, 255, 0.1);
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 35px rgba(0, 194, 255, 0.3);
  --space: 5rem;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--primary); color: var(--text); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { position: sticky; top: 16px; z-index: 100; padding: 0 24px; margin-top: 16px; }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; background: rgba(10, 16, 41, 0.75); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid var(--border); border-radius: 56px; padding: 12px 24px; box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); white-space: nowrap; }
.brand-icon { font-size: 24px; filter: drop-shadow(0 0 8px rgba(0, 194, 255, 0.5)); }
.brand-text { letter-spacing: 0.5px; }
.nav-links { display: flex; align-items: center; gap: 8px; flex: 1; justify-content: center; }
.nav-link { position: relative; padding: 8px 18px; border-radius: 40px; color: var(--text-muted); font-size: 15px; font-weight: 500; transition: all 0.3s ease; }
.nav-link:hover { color: var(--text); background: rgba(255, 255, 255, 0.08); }
.nav-link.active { color: var(--accent); background: rgba(0, 194, 255, 0.12); }
.nav-link.active::after { content: ""; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%); width: 18px; height: 2px; background: var(--accent); border-radius: 2px; box-shadow: 0 0 8px var(--accent-glow); }
.nav-cta { flex-shrink: 0; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; border-radius: 8px; }
.nav-toggle span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s ease; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 50px; font-weight: 600; font-size: 15px; padding: 14px 32px; color: #fff; border: none; transition: all 0.3s ease; text-decoration: none; cursor: pointer; }
.btn-primary { background: linear-gradient(135deg, var(--accent), #0077ff); box-shadow: 0 4px 20px rgba(0, 194, 255, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 194, 255, 0.45); }
.btn-glow { background: linear-gradient(135deg, var(--accent-2), #ff9f4a); color: #1a1a2e; box-shadow: 0 4px 24px rgba(255, 206, 79, 0.4); }
.btn-glow:hover { transform: translateY(-2px) scale(1.03); box-shadow: 0 8px 36px rgba(255, 206, 79, 0.55); }
.btn-outline { background: transparent; border: 1px solid rgba(255, 255, 255, 0.25); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(0, 194, 255, 0.06); }
.btn-sm { padding: 8px 20px; font-size: 14px; }

/* Hero */
.page-hero { position: relative; padding: 120px 0 80px; min-height: 620px; display: flex; align-items: center; background-size: cover; background-position: center; background-attachment: fixed; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(6, 10, 28, 0.88) 0%, rgba(10, 16, 41, 0.75) 50%, rgba(0, 194, 255, 0.15) 100%); }
.page-hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 85% 25%, rgba(0, 194, 255, 0.15), transparent 50%); pointer-events: none; }
.page-hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: 40px; background: rgba(0, 194, 255, 0.15); border: 1px solid rgba(0, 194, 255, 0.3); color: var(--accent); font-size: 14px; font-weight: 600; margin-bottom: 22px; letter-spacing: 0.5px; }
.hero-badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 10px var(--accent-2); }
.page-hero h1 { font-size: 52px; line-height: 1.2; font-weight: 800; margin-bottom: 20px; letter-spacing: -1px; }
.page-hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-text p { font-size: 17px; color: var(--text-muted); max-width: 520px; margin-bottom: 32px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-point { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; border-radius: 40px; background: var(--glass-bg); border: 1px solid var(--border); font-size: 14px; color: var(--text); }
.hero-point span { color: var(--accent-2); font-weight: 700; }

/* Coupon Wall */
.coupon-wall { display: flex; flex-direction: column; gap: 20px; }
.coupon-main { position: relative; background: linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.05)); border: 1px solid rgba(255, 255, 255, 0.22); border-radius: 24px; padding: 36px 36px 32px; backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); box-shadow: var(--shadow); overflow: hidden; }
.coupon-main::before { content: ""; position: absolute; top: -40px; right: -40px; width: 140px; height: 140px; border-radius: 50%; background: radial-gradient(circle, rgba(255, 206, 79, 0.25), transparent 70%); }
.coupon-ribbon { position: absolute; top: 20px; right: -38px; transform: rotate(45deg); background: var(--accent-2); color: #1a1a2e; font-size: 12px; font-weight: 700; padding: 6px 40px; box-shadow: 0 4px 15px rgba(255, 206, 79, 0.3); }
.coupon-amount { font-size: 64px; font-weight: 800; color: var(--accent-2); line-height: 1; margin-bottom: 8px; text-shadow: 0 0 30px rgba(255, 206, 79, 0.3); }
.coupon-amount span { font-size: 28px; vertical-align: top; margin-right: 4px; }
.coupon-title { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.coupon-main p { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.coupon-side { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.coupon-mini { padding: 20px; border-radius: var(--radius-sm); background: var(--glass-bg); border: 1px solid var(--border); backdrop-filter: blur(12px); display: flex; flex-direction: column; gap: 6px; transition: all 0.3s ease; }
.coupon-mini:hover { transform: translateY(-3px); border-color: rgba(0, 194, 255, 0.4); box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3); }
.coupon-mini span { color: var(--text-muted); font-size: 13px; }
.coupon-mini strong { color: var(--accent); font-size: 17px; font-weight: 700; }

/* Section base */
.section { padding: var(--space) 0; position: relative; }
.section-label { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border-radius: 30px; background: rgba(0, 194, 255, 0.1); border: 1px solid rgba(0, 194, 255, 0.2); color: var(--accent); font-size: 13px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 18px; }
.section-title { font-size: 36px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; letter-spacing: -0.5px; }
.section-desc { color: var(--text-muted); font-size: 16px; max-width: 620px; margin-bottom: 40px; }
.section-head { text-align: center; display: flex; flex-direction: column; align-items: center; }

/* Pain */
.pain-section { background: linear-gradient(180deg, var(--primary), var(--primary-light)); }
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pain-card { padding: 36px 28px; border-radius: var(--radius); background: var(--glass-bg); border: 1px solid var(--border); backdrop-filter: blur(12px); transition: all 0.3s ease; position: relative; overflow: hidden; }
.pain-card::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--accent), transparent); opacity: 0.6; }
.pain-card:hover { transform: translateY(-4px); border-color: rgba(0, 194, 255, 0.3); box-shadow: var(--shadow); }
.pain-icon { font-size: 38px; margin-bottom: 16px; }
.pain-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.pain-card p { color: var(--text-muted); font-size: 14.5px; }

/* Flow */
.flow-section { background: var(--primary-dark); position: relative; overflow: hidden; }
.flow-section::before { content: ""; position: absolute; top: 0; right: 0; left: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(0, 194, 255, 0.3), transparent); }
.flow-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.flow-visual { position: relative; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); }
.flow-visual img { width: 100%; height: 460px; object-fit: cover; }
.flow-visual .flow-float { position: absolute; bottom: 24px; left: 24px; right: 24px; padding: 20px 24px; background: rgba(10, 16, 41, 0.75); backdrop-filter: blur(16px); border: 1px solid var(--border); border-radius: 16px; display: flex; align-items: center; gap: 16px; }
.flow-float .float-status { width: 12px; height: 12px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 12px #4ade80; flex-shrink: 0; }
.flow-float .float-text { color: var(--text); font-size: 14px; }
.flow-float .float-text strong { color: var(--accent); }
.flow-steps { display: flex; flex-direction: column; gap: 20px; }
.flow-step { display: flex; gap: 20px; padding: 24px; border-radius: var(--radius); background: var(--glass-bg); border: 1px solid var(--border); transition: all 0.3s ease; }
.flow-step:hover { border-color: rgba(0, 194, 255, 0.4); transform: translateX(4px); }
.step-num { width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px; color: var(--accent); background: rgba(0, 194, 255, 0.12); border: 1px solid rgba(0, 194, 255, 0.25); }
.flow-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.flow-step p { color: var(--text-muted); font-size: 14px; }

/* Stats */
.stats-section { background: linear-gradient(135deg, var(--primary-light), var(--primary)); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card { text-align: center; padding: 36px 24px; border-radius: var(--radius); background: var(--glass-bg); border: 1px solid var(--border); backdrop-filter: blur(12px); transition: all 0.3s ease; }
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3); border-color: rgba(0, 194, 255, 0.3); }
.stat-num { font-size: 44px; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 8px; line-height: 1.1; }
.stat-label { color: var(--text-muted); font-size: 14px; }

/* Testimonials */
.testimonial-section { background: var(--primary); position: relative; overflow: hidden; }
.testimonial-section::before { content: ""; position: absolute; bottom: 0; left: -10%; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(0, 194, 255, 0.08), transparent 70%); pointer-events: none; }
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.t-card { padding: 30px; border-radius: var(--radius); background: var(--glass-bg); border: 1px solid var(--border); backdrop-filter: blur(12px); transition: all 0.3s ease; }
.t-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.t-stars { color: var(--accent-2); font-size: 15px; margin-bottom: 14px; letter-spacing: 2px; }
.t-card blockquote { font-size: 15px; color: var(--text); line-height: 1.7; margin-bottom: 20px; }
.t-author { display: flex; align-items: center; gap: 12px; }
.t-avatar { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px; color: #fff; background: linear-gradient(135deg, var(--accent), #0077ff); }
.t-author-name { font-weight: 600; font-size: 14px; }
.t-author-sub { color: var(--text-dim); font-size: 12.5px; }

/* FAQ */
.faq-section { background: var(--primary-light); }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--glass-bg); overflow: hidden; transition: all 0.3s ease; }
.faq-item:hover { border-color: rgba(0, 194, 255, 0.3); }
.faq-q { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 24px; font-size: 16px; font-weight: 600; color: var(--text); cursor: pointer; transition: all 0.3s ease; }
.faq-q:hover { color: var(--accent); }
.faq-arrow { width: 28px; height: 28px; flex-shrink: 0; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: rgba(255, 255, 255, 0.08); color: var(--text-muted); transition: all 0.3s ease; font-size: 14px; }
.faq-item.open .faq-arrow { transform: rotate(180deg); background: rgba(0, 194, 255, 0.2); color: var(--accent); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; color: var(--text-muted); font-size: 14.5px; line-height: 1.8; }
.faq-a-inner { padding: 0 24px 22px; }

/* CTA */
.cta-section { padding: 80px 0; background: var(--primary-dark); position: relative; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, rgba(0, 194, 255, 0.12), transparent 60%); }
.cta-card { position: relative; max-width: 900px; margin: 0 auto; padding: 56px 64px; text-align: center; border-radius: 28px; background: var(--glass-bg-strong); border: 1px solid rgba(0, 194, 255, 0.25); backdrop-filter: blur(20px); box-shadow: var(--shadow); }
.cta-card h2 { font-size: 34px; font-weight: 800; margin-bottom: 14px; }
.cta-card p { color: var(--text-muted); margin-bottom: 30px; font-size: 15.5px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-note { display: block; margin-top: 20px; color: var(--text-dim); font-size: 13px; }
.cta-note span { color: var(--accent); }

/* Footer */
.site-footer { background: var(--primary-dark); border-top: 1px solid var(--border); padding-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer-brand .brand-text { font-size: 20px; font-weight: 700; display: block; margin-bottom: 14px; }
.footer-brand p { color: var(--text-muted); font-size: 14.5px; max-width: 360px; }
.footer-links h4, .footer-contact h4 { font-size: 16px; font-weight: 600; margin-bottom: 18px; color: var(--text); }
.footer-links a { display: block; color: var(--text-muted); font-size: 14px; padding: 6px 0; transition: all 0.3s ease; }
.footer-links a:hover { color: var(--accent); padding-left: 6px; }
.footer-contact p { color: var(--text-muted); font-size: 14px; padding: 5px 0; }
.footer-bottom { border-top: 1px solid var(--border); padding: 22px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer-bottom p { color: var(--text-dim); font-size: 13.5px; }
.footer-bottom span { color: var(--text-muted); }

/* Responsive */
@media (max-width: 1024px) {
  .page-hero .container { grid-template-columns: 1fr 1fr; gap: 40px; }
  .page-hero h1 { font-size: 40px; }
  .section-title { font-size: 30px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-wrap { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 800px) {
  .page-hero { padding: 90px 0 60px; }
  .page-hero .container { grid-template-columns: 1fr; gap: 40px; }
  .page-hero h1 { font-size: 34px; }
  .pain-grid { grid-template-columns: 1fr; }
  .coupon-side { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: flex; }
  .nav-links { position: fixed; top: 80px; left: 20px; right: 20px; background: rgba(10, 16, 41, 0.96); border: 1px solid var(--border); border-radius: 20px; padding: 20px; flex-direction: column; gap: 10px; transform: translateY(-140%); opacity: 0; pointer-events: none; transition: all 0.4s ease; box-shadow: var(--shadow); }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { width: 100%; text-align: center; padding: 12px; }
  .nav-cta { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  :root { --space: 3.2rem; }
  .section-title { font-size: 26px; }
  .page-hero h1 { font-size: 29px; }
  .stats-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .coupon-side { grid-template-columns: 1fr; }
  .cta-card { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .container { padding: 0 18px; }
  .brand-text { font-size: 16px; }
  .coupon-amount { font-size: 48px; }
  .page-hero { background-attachment: scroll; }
}

:root {
            --bg-deep: #070d1f;
            --bg-main: #0a1026;
            --bg-card: rgba(255, 255, 255, 0.045);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --bg-glass: rgba(255, 255, 255, 0.06);
            --border-glass: rgba(255, 255, 255, 0.1);
            --border-glass-light: rgba(255, 255, 255, 0.16);
            --primary: #3b82f6;
            --primary-dark: #2563eb;
            --accent: #22d3ee;
            --cyan-glow: rgba(34, 211, 238, 0.45);
            --blue-glow: rgba(59, 130, 246, 0.4);
            --text-light: #e7edf7;
            --text-muted: rgba(231, 237, 247, 0.62);
            --text-weak: rgba(231, 237, 247, 0.42);
            --success: #34d399;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.3);
            --space-section: 108px;
            --container-w: 1200px;
            --transition-default: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 100px;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-main);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 14px;
            z-index: 999;
            padding: 0 16px;
        }

        .nav-container {
            max-width: 1180px;
            margin: 0 auto;
            background: rgba(10, 16, 38, 0.72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass-light);
            border-radius: 60px;
            padding: 10px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
            transition: var(--transition-default);
        }

        .nav-container:hover {
            border-color: rgba(255, 255, 255, 0.22);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            font-size: 26px;
            line-height: 1;
            filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.5));
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
            white-space: nowrap;
            background: linear-gradient(135deg, #ffffff 0%, #c4d9f5 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            transition: var(--transition-default);
            border: 1px solid transparent;
        }

        .nav-link:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: #ffffff;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(34, 211, 238, 0.15));
            border-color: rgba(59, 130, 246, 0.3);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-weight: 600;
            border: none;
            transition: var(--transition-default);
            cursor: pointer;
            white-space: nowrap;
            font-size: 15px;
            line-height: 1;
        }

        .btn-primary {
            background: linear-gradient(135deg, #3b82f6, #22d3ee);
            color: #ffffff;
            padding: 14px 32px;
            box-shadow: 0 4px 24px rgba(59, 130, 246, 0.35), 0 0 18px rgba(34, 211, 238, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 34px rgba(59, 130, 246, 0.5), 0 0 30px rgba(34, 211, 238, 0.3);
            color: #fff;
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--text-light);
            padding: 13px 28px;
            backdrop-filter: blur(8px);
        }

        .btn-outline:hover {
            border-color: rgba(34, 211, 238, 0.5);
            background: rgba(34, 211, 238, 0.08);
            color: var(--accent);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
        }

        .nav-cta {
            flex-shrink: 0;
            margin-left: 4px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            transition: var(--transition-default);
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: 0.3s;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .hero {
            position: relative;
            padding: clamp(52px, 8vw, 110px) 0 90px;
            min-height: 680px;
            display: flex;
            align-items: center;
            isolation: isolate;
            background: var(--bg-deep);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: -2;
            background-image: url("/assets/images/backpic/back-1.jpg");
            background-size: cover;
            background-position: center;
        }

        .hero::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(115deg, rgba(6, 10, 28, 0.96) 0%, rgba(7, 15, 34, 0.88) 45%, rgba(10, 16, 38, 0.6) 100%);
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }

        .hero-copy {
            max-width: 620px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 40px;
            padding: 7px 18px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 26px;
            backdrop-filter: blur(10px);
        }

        .hero-badge i {
            color: var(--accent);
            font-size: 12px;
        }

        .hero h1 {
            font-size: clamp(36px, 5vw, 52px);
            line-height: 1.22;
            letter-spacing: 1px;
            font-weight: 800;
            background: linear-gradient(120deg, #ffffff 15%, #c8dff5 80%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 22px;
        }

        .hero-sub {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 34px;
        }

        .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            padding: 7px 14px;
            border-radius: 40px;
            font-size: 13px;
            color: var(--text-light);
        }

        .hero-tags i {
            color: var(--accent);
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }

        .hero-note {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
        }

        .hero-note i {
            color: var(--success);
        }

        .coupon-wrap {
            position: relative;
            display: flex;
            justify-content: center;
        }

        .coupon-card {
            width: 100%;
            max-width: 420px;
            background: linear-gradient(150deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 30px;
            padding: 34px 34px 28px;
            box-shadow: 0 20px 70px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.1);
            position: relative;
            animation: float 5s ease-in-out infinite;
        }

        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

        .coupon-card::before,
        .coupon-card::after {
            content: "";
            position: absolute;
            top: 44%;
            width: 20px;
            height: 20px;
            background: var(--bg-deep);
            border-radius: 50%;
            z-index: 2;
        }

        .coupon-card::before {
            left: -11px;
        }

        .coupon-card::after {
            right: -11px;
        }

        .coupon-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-bottom: 22px;
        }

        .coupon-brand {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }

        .coupon-tag {
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(59, 130, 246, 0.2));
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--accent);
            font-size: 12px;
            padding: 5px 14px;
            border-radius: 40px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .coupon-label {
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--text-weak);
            margin-bottom: 14px;
        }

        .coupon-value {
            font-size: clamp(34px, 4vw, 44px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 18px;
            background: linear-gradient(135deg, #ffffff, #89b7ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .coupon-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 2px dashed rgba(255, 255, 255, 0.16);
            padding-top: 18px;
            margin-top: 4px;
        }

        .coupon-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
        }

        .coupon-meta span {
            font-size: 13px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .coupon-meta span i {
            color: var(--accent);
        }

        .coupon-glow {
            position: absolute;
            inset: 0;
            border-radius: 30px;
            background: radial-gradient(ellipse at 70% 20%, rgba(59, 130, 246, 0.3), transparent 60%);
            pointer-events: none;
            z-index: 0;
        }

        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-head .section-kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1.6px;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 14px;
        }

        .section-title {
            font-size: clamp(28px, 3.6vw, 40px);
            line-height: 1.3;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .section-alt {
            background: linear-gradient(180deg, var(--bg-deep), var(--bg-main));
        }

        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .pain-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 30px 26px;
            transition: var(--transition-default);
            position: relative;
            backdrop-filter: blur(8px);
        }

        .pain-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: var(--shadow-card);
        }

        .pain-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: rgba(59, 130, 246, 0.12);
            border: 1px solid rgba(59, 130, 246, 0.2);
            margin-bottom: 20px;
            color: var(--accent);
        }

        .pain-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .pain-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .solution {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .solution-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 24px 70px rgba(0, 0, 0, 0.4);
            border: 1px solid var(--border-glass);
        }

        .solution-media img {
            width: 100%;
            height: 460px;
            object-fit: cover;
        }

        .solution-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(200deg, transparent 40%, rgba(6, 10, 28, 0.55));
        }

        .solution-media-badge {
            position: absolute;
            left: 20px;
            bottom: 20px;
            z-index: 2;
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 40px;
            padding: 10px 20px;
            font-size: 13px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-media-badge i {
            color: var(--accent);
        }

        .solution-content .section-title {
            margin-bottom: 14px;
            font-size: clamp(26px, 3vw, 36px);
        }

        .solution-content .section-sub {
            margin-bottom: 28px;
        }

        .solution-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .solution-item {
            display: flex;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: var(--transition-default);
        }

        .solution-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(34, 211, 238, 0.3);
            transform: translateX(4px);
        }

        .solution-item-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(34, 211, 238, 0.2));
            border: 1px solid rgba(34, 211, 238, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 18px;
        }

        .solution-item h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .solution-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .stats {
            position: relative;
            overflow: hidden;
            padding: var(--space-section) 0;
        }

        .stats-bg {
            position: absolute;
            inset: 0;
            z-index: -2;
            background-image: url("/assets/images/backpic/back-2.jpg");
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .stats-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 10, 28, 0.94), rgba(10, 16, 38, 0.92));
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .stat-card {
            text-align: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(14px);
            border-radius: var(--radius-lg);
            padding: 38px 20px;
            transition: var(--transition-default);
        }

        .stat-card:hover {
            border-color: rgba(34, 211, 238, 0.3);
            transform: translateY(-6px);
            box-shadow: 0 14px 50px rgba(0, 0, 0, 0.4);
        }

        .stat-num {
            font-size: clamp(36px, 4vw, 54px);
            font-weight: 800;
            line-height: 1.1;
            background: linear-gradient(135deg, #ffffff, #79b6ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 15px;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }

        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .scene-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            background: var(--bg-card);
            transition: var(--transition-default);
            display: flex;
            flex-direction: column;
        }

        .scene-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-card);
            border-color: rgba(255, 255, 255, 0.2);
        }

        .scene-media {
            aspect-ratio: 3 / 2;
            overflow: hidden;
            position: relative;
        }

        .scene-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .scene-card:hover .scene-media img {
            transform: scale(1.05);
        }

        .scene-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(6, 10, 28, 0.6));
        }

        .scene-body {
            padding: 26px 24px 28px;
            flex: 1;
        }

        .scene-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .scene-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 18px;
        }

        .scene-tags span {
            font-size: 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 40px;
            padding: 5px 12px;
            color: var(--text-light);
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-item {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: var(--transition-default);
        }

        .step-item:hover {
            transform: translateY(-6px);
            border-color: rgba(34, 211, 238, 0.3);
            background: var(--bg-card-hover);
        }

        .step-num {
            font-size: 30px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1.5px rgba(34, 211, 238, 0.5);
            margin-bottom: 14px;
            line-height: 1;
        }

        .step-item h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .steps-connect {
            display: none;
        }

        .testi-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .testi-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            backdrop-filter: blur(8px);
            transition: var(--transition-default);
        }

        .testi-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255, 255, 255, 0.18);
            transform: translateY(-4px);
        }

        .testi-stars {
            color: #fbbf24;
            font-size: 14px;
            margin-bottom: 16px;
            letter-spacing: 3px;
        }

        .testi-text {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .testi-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 18px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .testi-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, #3b82f6, #22d3ee);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
        }

        .testi-author .testi-name {
            font-size: 14px;
            font-weight: 600;
        }

        .testi-author .testi-loc {
            font-size: 13px;
            color: var(--text-weak);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.18);
        }

        .faq-item.active {
            border-color: rgba(34, 211, 238, 0.35);
            background: rgba(59, 130, 246, 0.06);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 22px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            text-align: left;
            transition: var(--transition-default);
        }

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

        .faq-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.2);
            flex-shrink: 0;
            transition: transform 0.3s;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            border-color: var(--accent);
            color: var(--accent);
        }

        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows 0.35s ease;
        }

        .faq-item.active .faq-answer {
            grid-template-rows: 1fr;
        }

        .faq-answer-inner {
            overflow: hidden;
        }

        .faq-answer-inner p {
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .cta {
            padding: var(--space-section) 0;
            position: relative;
            background: var(--bg-deep);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }

        .cta-inner {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
            background: linear-gradient(160deg, rgba(59, 130, 246, 0.09), rgba(34, 211, 238, 0.04));
            border: 1px solid rgba(59, 130, 246, 0.22);
            border-radius: 40px;
            padding: 56px 40px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 10px 60px rgba(0, 0, 0, 0.4);
        }

        .cta-inner::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.25), transparent 70%);
        }

        .cta-inner::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 150px;
            height: 150px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.22), transparent 70%);
        }

        .cta-title {
            font-size: clamp(28px, 3.6vw, 40px);
            font-weight: 800;
            margin-bottom: 18px;
            position: relative;
            z-index: 1;
        }

        .cta-text {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 30px;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .cta-wechat {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px dashed rgba(255, 255, 255, 0.25);
            border-radius: 40px;
            padding: 10px 22px;
            font-size: 14px;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition-default);
        }

        .cta-wechat:hover {
            border-color: var(--accent);
            background: rgba(34, 211, 238, 0.08);
        }

        .cta-wechat i {
            color: var(--success);
            font-size: 18px;
        }

        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-glass);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 50px;
        }

        .footer-brand .brand-text {
            font-size: 20px;
            display: inline-block;
            margin-bottom: 16px;
        }

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

        .footer-links h4,
        .footer-contact h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-light);
        }

        .footer-links a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 5px 0;
            transition: var(--transition-default);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-contact p {
            font-size: 14px;
            color: var(--text-muted);
            padding: 5px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact p i {
            color: var(--accent);
            font-size: 13px;
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding: 22px 0;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-weak);
        }

        .footer-bottom span {
            color: var(--text-muted);
        }

        .highlight-gradient {
            background: linear-gradient(105deg, var(--accent), #4f97ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        .faq-question:focus-visible,
        .cta-wechat:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 60px;
            }

            .hero-copy {
                max-width: 100%;
                text-align: center;
                margin: 0 auto;
            }

            .hero-tags,
            .hero-actions {
                justify-content: center;
            }

            .hero-sub {
                margin-left: auto;
                margin-right: auto;
            }

            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .solution {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .solution-media img {
                height: 380px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .testi-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 820px) {
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 16px;
                right: 16px;
                background: rgba(10, 16, 38, 0.96);
                backdrop-filter: blur(20px);
                border: 1px solid var(--border-glass-light);
                border-radius: 24px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            }

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

            .nav-link {
                text-align: center;
                padding: 14px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .brand-text {
                font-size: 15px;
            }
        }

        @media (max-width: 600px) {
            :root {
                --space-section: 72px;
            }

            .container {
                padding: 0 18px;
            }

            .pain-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .scene-grid {
                grid-template-columns: 1fr;
            }

            .steps {
                grid-template-columns: 1fr;
            }

            .testi-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom .container {
                flex-direction: column;
                text-align: center;
            }

            .coupon-card {
                padding: 28px 22px 22px;
            }

            .coupon-meta {
                flex-direction: column;
                align-items: flex-start;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .cta-inner {
                padding: 40px 24px;
                border-radius: 28px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
        }