/* roulang page: index */
:root {
            --bg-deep: #060a14;
            --bg-body: #0a0f1e;
            --bg-panel: #10182b;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-solid: #111b30;
            --accent-cyan: #00e5ff;
            --accent-purple: #8b5cf6;
            --accent-green: #10b981;
            --accent-amber: #f59e0b;
            --text-main: #e8eef7;
            --text-weak: #8b9bb5;
            --text-faint: #5f6f8a;
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 32px rgba(0, 229, 255, 0.15);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 76px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        input {
            font-family: inherit;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--bg-deep);
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.35;
            text-align: center;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-weak);
            text-align: center;
            max-width: 560px;
            margin: 0 auto 50px;
            line-height: 1.7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: #fff;
            box-shadow: 0 4px 18px rgba(0, 229, 255, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.4);
            color: #fff;
        }
        .btn-ghost {
            border-color: var(--border-light);
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.03);
        }
        .btn-ghost:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.06);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(0, 229, 255, 0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .tag-purple {
            background: rgba(139, 92, 246, 0.12);
            color: var(--accent-purple);
            border-color: rgba(139, 92, 246, 0.25);
        }
        .tag-green {
            background: rgba(16, 185, 129, 0.12);
            color: var(--accent-green);
            border-color: rgba(16, 185, 129, 0.2);
        }
        .tag-amber {
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-amber);
            border-color: rgba(245, 158, 11, 0.25);
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--header-height);
            background: rgba(10, 15, 30, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.45);
            background: rgba(8, 13, 26, 0.95);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 30px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.3px;
            line-height: 1.3;
        }
        .logo-highlight {
            color: var(--accent-cyan);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            position: relative;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            border-radius: 40px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link.active {
            color: var(--accent-cyan);
            font-weight: 600;
            background: rgba(0, 229, 255, 0.08);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
        }
        .nav-cta {
            display: flex;
            align-items: center;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            z-index: 120;
        }
        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }
        .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;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: calc(var(--header-height) + 40px) 0 80px;
            background: linear-gradient(135deg, rgba(6, 10, 20, 0.9) 0%, rgba(16, 24, 43, 0.75) 50%, rgba(139, 92, 246, 0.3) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(16, 185, 129, 0.15);
            border: 1px solid rgba(16, 185, 129, 0.3);
            color: var(--accent-green);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: var(--accent-green);
            border-radius: 50%;
            animation: pulse 1.6s infinite;
        }
        @keyframes pulse {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }
        .hero h1 {
            font-size: 56px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
            background: linear-gradient(120deg, #fff 30%, var(--accent-cyan) 70%, var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 18px;
            color: var(--text-weak);
            line-height: 2;
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--bg-deep);
            padding: 50px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
        }
        .stat-number {
            font-size: 42px;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: -1px;
            line-height: 1.2;
        }
        .stat-number span {
            font-size: 24px;
            font-weight: 700;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-weak);
            margin-top: 8px;
            letter-spacing: 0.5px;
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-body);
        }
        .feature-card {
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-cyan);
            margin-bottom: 22px;
        }
        .feature-icon.purple {
            background: rgba(139, 92, 246, 0.1);
            border-color: rgba(139, 92, 246, 0.2);
            color: var(--accent-purple);
        }
        .feature-icon.green {
            background: rgba(16, 185, 129, 0.1);
            border-color: rgba(16, 185, 129, 0.2);
            color: var(--accent-green);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.75;
        }
        .feature-card .feature-img {
            margin-top: 24px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .feature-card .feature-img img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            transition: var(--transition);
        }
        .feature-card:hover .feature-img img {
            transform: scale(1.04);
        }

        /* ===== Categories ===== */
        .category-section {
            background: var(--bg-deep);
        }
        .category-card {
            background: linear-gradient(145deg, rgba(17, 27, 48, 0.9), rgba(10, 15, 30, 0.9));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px;
            display: flex;
            align-items: center;
            gap: 40px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 40px rgba(0, 229, 255, 0.15);
        }
        .category-card-image {
            flex-shrink: 0;
            width: 320px;
            height: 200px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .category-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .category-card-image img {
            transform: scale(1.05);
        }
        .category-card-content {
            flex: 1;
            position: relative;
            z-index: 2;
        }
        .category-card-content h3 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .category-card-content p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 440px;
        }
        .category-card-meta {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== News ===== */
        .news-section {
            background: var(--bg-body);
        }
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .news-left {
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
        }
        .news-left-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .news-left-desc {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 20px;
        }
        .search-box {
            position: relative;
            margin-bottom: 24px;
        }
        .search-box input {
            width: 100%;
            height: 46px;
            padding: 0 46px 0 16px;
            border-radius: 40px;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-main);
            font-size: 14px;
            transition: var(--transition);
            outline: none;
        }
        .search-box input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1);
        }
        .search-box input::placeholder {
            color: var(--text-faint);
        }
        .search-box .search-icon {
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-faint);
            font-size: 15px;
            pointer-events: none;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            padding: 20px 22px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .news-item:hover {
            background: rgba(255, 255, 255, 0.04);
            border-color: var(--border-light);
            transform: translateX(4px);
        }
        .news-item-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 6px;
        }
        .news-item-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .news-item-title a:hover {
            color: var(--accent-cyan);
        }
        .news-item-desc {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-faint);
        }
        .news-item-meta .readMore {
            color: var(--accent-cyan);
            font-weight: 500;
        }
        .news-item-meta .readMore:hover {
            text-decoration: underline;
        }
        .news-right {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .news-right-card {
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px;
        }
        .news-right-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .news-right-card h4 i {
            color: var(--accent-cyan);
        }
        .tip-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .tip-list li {
            display: flex;
            gap: 12px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .tip-list li i {
            color: var(--accent-green);
            margin-top: 3px;
            flex-shrink: 0;
        }
        .empty-tip {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-weak);
            font-size: 15px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
        }
        .empty-tip i {
            font-size: 40px;
            color: var(--text-faint);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== Process ===== */
        .process-section {
            background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-body) 100%);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 20px;
        }
        .process-step {
            position: relative;
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 34px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .process-step:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-cyan);
        }
        .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.3);
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .process-step::after {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-faint);
            font-size: 14px;
            z-index: 2;
        }
        .process-step:last-child::after {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-body);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item.active {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.08);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 26px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question .fa-chevron-down {
            color: var(--text-faint);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--accent-cyan);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 26px 22px;
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 18px;
            margin-top: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background: linear-gradient(135deg, rgba(6, 10, 20, 0.85), rgba(139, 92, 246, 0.35)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 40px;
            font-weight: 900;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .cta-actions .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), #fff);
            color: #0a0f1e;
            box-shadow: 0 4px 30px rgba(0, 229, 255, 0.4);
        }
        .cta-actions .btn-ghost {
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .cta-actions .btn-ghost:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 20px;
        }
        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-weak);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: var(--text-faint);
        }
        .footer-bottom a {
            color: var(--text-weak);
        }
        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .section {
                padding: 70px 0;
            }
            .hero h1 {
                font-size: 44px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .process-step::after {
                display: none;
            }
            .category-card {
                flex-direction: column;
                padding: 30px;
            }
            .category-card-image {
                width: 100%;
                height: 200px;
            }
            .news-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(6, 10, 20, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 32px;
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 110;
            }
            .main-nav.is-open {
                opacity: 1;
                visibility: visible;
            }
            .nav-list {
                flex-direction: column;
                gap: 20px;
            }
            .nav-link {
                font-size: 22px;
                padding: 12px 32px;
            }
            .nav-cta {
                margin-top: 10px;
            }
            .hero {
                padding-top: calc(var(--header-height) + 30px);
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .section-title {
                font-size: 28px;
            }
            .cta-section h2 {
                font-size: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 520px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 30px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 24px;
            }
            .category-card {
                padding: 24px;
            }
            .category-card-image {
                height: 160px;
            }
            .news-left {
                padding: 24px;
            }
            .news-item {
                padding: 16px;
            }
            .news-item-title {
                font-size: 15px;
            }
            .faq-question {
                padding: 18px 20px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 0 20px 18px;
                font-size: 14px;
            }
            .cta-section {
                padding: 70px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .footer-grid {
                gap: 24px;
            }
        }

/* roulang page: article */
:root {
            --c-primary: #00e5ff;
            --c-secondary: #7c4dff;
            --c-accent: #ff2d78;
            --c-dark: #0a0f1e;
            --c-dark-2: #111a2e;
            --c-bg: #0b1120;
            --c-card: #151d30;
            --c-card-soft: #1a2340;
            --c-text: #e8edf7;
            --c-muted: #9aa6bf;
            --c-border: rgba(255, 255, 255, .08);
            --radius: 18px;
            --radius-lg: 26px;
            --shadow: 0 12px 40px rgba(0, 0, 0, .45);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, .25);
            --space-section: 90px;
            --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-base);
            background: var(--c-bg);
            color: var(--c-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--c-primary);
            text-decoration: none;
            transition: color .25s ease;
        }

        a:hover {
            color: #7cf3ff;
        }

        button,
        input {
            font-family: inherit;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, .1);
            border: 1px solid rgba(0, 229, 255, .25);
            color: var(--c-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 40px;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }

        .section-title {
            font-size: clamp(28px, 3.6vw, 42px);
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 14px;
        }

        .section-sub {
            color: var(--c-muted);
            font-size: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            border: none;
            border-radius: 50px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all .25s ease;
            line-height: 1.2;
        }

        .btn-primary {
            background: linear-gradient(135deg, #00d4ff, #6a3dff);
            color: #fff;
            box-shadow: 0 8px 30px rgba(0, 229, 255, .3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 229, 255, .45);
            color: #fff;
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid var(--c-border);
            color: var(--c-text);
        }

        .btn-ghost:hover {
            border-color: var(--c-primary);
            color: var(--c-primary);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }

        .badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(124, 77, 255, .15);
            color: #c4a7ff;
            border: 1px solid rgba(124, 77, 255, .25);
        }

        .badge-primary {
            background: rgba(0, 229, 255, .12);
            color: var(--c-primary);
            border-color: rgba(0, 229, 255, .3);
        }

        .badge-accent {
            background: rgba(255, 45, 120, .12);
            color: #ff7bab;
            border-color: rgba(255, 45, 120, .25);
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 15, 30, .82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--c-border);
            padding: 14px 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 56px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
            border-radius: 12px;
            color: #fff;
            font-size: 18px;
            box-shadow: var(--shadow-glow);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            letter-spacing: .5px;
        }

        .logo-highlight {
            color: var(--c-primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 10px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-link {
            color: var(--c-muted);
            font-size: 15px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 30px;
            transition: all .25s ease;
            line-height: 1.4;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .06);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(0, 229, 255, .12);
            box-shadow: inset 0 0 0 1px var(--c-primary);
        }

        .nav-cta {
            margin-left: 8px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 44px;
            height: 44px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            padding: 0;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 4px;
            transition: all .3s ease;
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            padding: 170px 0 80px;
            background: linear-gradient(to bottom, rgba(10, 15, 30, .72), rgba(10, 15, 30, .92)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            text-align: center;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--c-muted);
            margin-bottom: 22px;
        }

        .breadcrumb a {
            color: var(--c-muted);
            transition: color .25s;
        }

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

        .breadcrumb i {
            font-size: 11px;
            color: var(--c-muted);
        }

        .page-banner .banner-title {
            font-size: clamp(28px, 4.4vw, 52px);
            font-weight: 900;
            color: #fff;
            max-width: 960px;
            margin: 0 auto 20px;
            line-height: 1.35;
            text-shadow: 0 4px 30px rgba(0, 0, 0, .4);
        }

        .page-banner .banner-sub {
            color: rgba(255, 255, 255, .75);
            font-size: 16px;
            max-width: 640px;
            margin: 0 auto;
        }

        /* Article Detail */
        .article-section {
            padding: 70px 0 90px;
        }

        .article-card {
            background: var(--c-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-lg);
            padding: 44px 48px;
            box-shadow: var(--shadow);
        }

        .article-header {
            margin-bottom: 36px;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--c-border);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 18px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 14px;
            color: var(--c-muted);
        }

        .article-meta i {
            color: var(--c-primary);
            font-size: 13px;
        }

        .article-title {
            font-size: clamp(24px, 3.2vw, 36px);
            font-weight: 800;
            color: #fff;
            line-height: 1.4;
            margin: 0;
        }

        .article-body {
            font-size: 16px;
            color: #c7d0e0;
        }

        .article-body p {
            margin-bottom: 1.6em;
        }

        .article-body h2,
        .article-body h3 {
            color: #fff;
            font-weight: 700;
            margin-top: 1.8em;
            margin-bottom: .8em;
        }

        .article-body h2 {
            font-size: 24px;
        }

        .article-body h3 {
            font-size: 20px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.6em 1.4em;
            padding-left: 0;
        }

        .article-body li {
            margin-bottom: .5em;
        }

        .article-body a {
            color: var(--c-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--c-primary);
            background: rgba(0, 229, 255, .06);
            padding: 18px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 1.6em 0;
            color: #aab6cc;
        }

        .article-body img {
            border-radius: var(--radius);
            margin: 1.4em 0;
        }

        .not-found {
            text-align: center;
            padding: 70px 20px;
        }

        .not-found .nf-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 24px;
            background: rgba(255, 45, 120, .1);
            border: 1px solid rgba(255, 45, 120, .2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            color: var(--c-accent);
        }

        .not-found p {
            font-size: 18px;
            color: var(--c-muted);
            margin-bottom: 28px;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 44px;
            padding-top: 26px;
            border-top: 1px solid var(--c-border);
            flex-wrap: wrap;
        }

        .article-share span {
            font-size: 14px;
            color: var(--c-muted);
            font-weight: 600;
        }

        .share-links {
            display: flex;
            gap: 10px;
        }

        .share-links a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--c-card-soft);
            border: 1px solid var(--c-border);
            color: var(--c-muted);
            font-size: 15px;
            transition: all .25s ease;
        }

        .share-links a:hover {
            color: #fff;
            background: var(--c-primary);
            border-color: var(--c-primary);
            transform: translateY(-2px);
        }

        /* Info Cards */
        .info-section {
            background: var(--c-dark);
            border-top: 1px solid var(--c-border);
            border-bottom: 1px solid var(--c-border);
        }

        .info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .info-card {
            background: var(--c-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius);
            padding: 30px;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .info-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .4s ease;
        }

        .info-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(0, 229, 255, .2);
        }

        .info-card:hover::after {
            transform: scaleX(1);
        }

        .info-card-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            color: #fff;
            background: linear-gradient(135deg, rgba(0, 229, 255, .25), rgba(124, 77, 255, .25));
            border: 1px solid rgba(255, 255, 255, .12);
        }

        .info-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .info-card p {
            font-size: 14px;
            color: var(--c-muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .info-card-link {
            font-size: 14px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* FAQ */
        .faq-section {
            background: var(--c-bg);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        details {
            background: var(--c-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            padding: 0;
            overflow: hidden;
            transition: border-color .25s ease;
        }

        details[open] {
            border-color: rgba(0, 229, 255, .3);
        }

        summary {
            cursor: pointer;
            padding: 20px 26px;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 14px;
            list-style: none;
            user-select: none;
            position: relative;
        }

        summary::-webkit-details-marker {
            display: none;
        }

        summary i {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: rgba(0, 229, 255, .1);
            color: var(--c-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        summary::after {
            content: '+';
            position: absolute;
            right: 24px;
            font-size: 22px;
            font-weight: 400;
            color: var(--c-muted);
            transition: transform .3s ease;
        }

        details[open] summary::after {
            transform: rotate(45deg);
            color: var(--c-primary);
        }

        .faq-answer {
            padding: 0 26px 22px 74px;
            color: var(--c-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(0, 229, 255, .08), rgba(124, 77, 255, .14)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
        }

        .cta-card {
            background: rgba(11, 17, 32, .85);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-lg);
            padding: 56px;
            text-align: center;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow);
        }

        .cta-card h2 {
            font-size: clamp(26px, 3.4vw, 38px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-card p {
            color: var(--c-muted);
            font-size: 16px;
            max-width: 540px;
            margin: 0 auto 30px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--c-dark-2);
            border-top: 1px solid var(--c-border);
            padding: 60px 0 0;
        }

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

        .footer-brand p {
            color: var(--c-muted);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 18px;
            max-width: 350px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: var(--c-muted);
            font-size: 14px;
            transition: color .25s ease;
        }

        .footer-links a:hover {
            color: var(--c-primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--c-border);
            padding: 22px 0;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--c-muted);
            font-size: 13px;
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --space-section: 70px;
            }

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

            .article-card {
                padding: 36px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: min(320px, 80vw);
                height: 100vh;
                background: var(--c-dark-2);
                flex-direction: column;
                align-items: flex-start;
                justify-content: flex-start;
                padding: 90px 30px 40px;
                gap: 28px;
                transition: right .35s ease;
                box-shadow: -10px 0 40px rgba(0, 0, 0, .4);
                z-index: 999;
            }

            .main-nav.active {
                right: 0;
            }

            .nav-list {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                width: 100%;
            }

            .nav-link {
                display: block;
                width: 100%;
                font-size: 17px;
                padding: 12px 16px;
            }

            .nav-cta {
                margin-left: 0;
                width: 100%;
            }

            .nav-cta .btn {
                width: 100%;
            }

            .nav-toggle {
                display: flex;
                position: relative;
                z-index: 1001;
            }

            .nav-toggle.active span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

            .nav-toggle.active span:nth-child(2) {
                opacity: 0;
                transform: scaleX(0);
            }

            .nav-toggle.active span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

            .page-banner {
                padding: 140px 0 60px;
            }

            .article-card {
                padding: 26px 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .cta-card {
                padding: 36px 24px;
            }
        }

        @media (max-width: 520px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

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

            .section-head {
                margin-bottom: 34px;
            }

            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 15px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
                width: 100%;
                text-align: center;
            }

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .article-meta {
                gap: 10px;
            }

            .faq-answer {
                padding: 0 20px 20px 20px;
            }

            summary {
                padding: 16px 20px;
                font-size: 15px;
            }
        }

        :focus-visible {
            outline: 2px solid var(--c-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--c-card);
            border: 1px solid var(--c-border);
            color: var(--c-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            cursor: pointer;
            z-index: 99;
            transition: all .3s ease;
            opacity: 0;
            visibility: hidden;
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: var(--c-primary);
            color: #fff;
            border-color: var(--c-primary);
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
:root {
  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --primary-light: #7dd3fc;
  --accent: #22d3ee;
  --amber: #f59e0b;
  --green: #10b981;
  --red: #ef4444;
  --dark-bg: #0b1222;
  --dark-panel: #111a2e;
  --dark-card: #16203a;
  --body-bg: #f1f5f9;
  --white: #ffffff;
  --text-main: #1e293b;
  --text-sub: #475569;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(2, 132, 199, 0.08);
  --shadow-lg: 0 16px 48px rgba(2, 132, 199, 0.16);
  --shadow-accent: 0 8px 32px rgba(14, 165, 233, 0.28);
  --space-xl: 6.5rem;
  --space-lg: 5rem;
  --space-md: 3.5rem;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 基础 Reset / Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--body-bg);
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: 1rem; }

.grid-container { max-width: 1200px; margin: 0 auto; padding-left: 1.25rem; padding-right: 1.25rem; }

/* ========== 导航栏 Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 18, 34, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 1.5rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.15rem;
  box-shadow: var(--shadow-accent);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.logo-highlight {
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
}

.nav-list li { margin: 0; }

.nav-link {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.72);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-link.active {
  color: #fff;
  font-weight: 700;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.22), rgba(34, 211, 238, 0.16));
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.25);
}

.nav-cta { margin-left: 0.4rem; }

.nav-toggle { display: none; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(14, 165, 233, 0.38);
  color: #fff;
}

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--dark-bg);
  color: #fff;
}

.btn-dark:hover { background: var(--dark-panel); transform: translateY(-2px); }

.btn-lg { padding: 0.95rem 2.2rem; font-size: 1.05rem; border-radius: 14px; }
.btn-sm { padding: 0.45rem 1.1rem; font-size: 0.85rem; border-radius: 9px; }

/* ========== Hero 首屏 ========== */
.page-hero {
  position: relative;
  padding: 5.5rem 0 5rem;
  background: linear-gradient(135deg, rgba(11, 18, 34, 0.96), rgba(2, 132, 199, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.page-hero .grid-container { position: relative; z-index: 1; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 1.8rem;
}

.breadcrumb a { color: rgba(255, 255, 255, 0.55); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: var(--primary-light); font-weight: 600; }

.page-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: 0.01em;
}

.page-hero h1 span {
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-hero .lead {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 620px;
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 2.8rem;
  margin-top: 3.2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-stat .num {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.hero-stat .num i { color: var(--accent); font-size: 1.2rem; margin-right: 0.3rem; }

.hero-stat .label { font-size: 0.85rem; color: rgba(255, 255, 255, 0.6); margin-top: 0.2rem; }

/* ========== 通用板块 ========== */
.section { padding: var(--space-lg) 0; position: relative; }
.section-alt { background: var(--white); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.8rem;
  flex-wrap: wrap;
}

.section-head .left { max-width: 640px; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.12), rgba(34, 211, 238, 0.1));
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.8rem;
}

.section-head h2 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.section-head .sub { color: var(--text-sub); font-size: 1rem; line-height: 1.7; }

.section-head .link-more {
  color: var(--primary-dark);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  transition: var(--transition);
}

.section-head .link-more:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateX(4px);
}

/* ========== 入口方式卡片 ========== */
.method-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.8rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.method-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.method-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(14, 165, 233, 0.25); }
.method-card:hover::before { opacity: 1; }

.method-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 1.4rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 8px 20px rgba(14, 165, 233, 0.25);
}

.method-card:nth-child(2) .method-icon { background: linear-gradient(135deg, #8b5cf6, #6366f1); box-shadow: 0 8px 20px rgba(139, 92, 246, 0.25); }
.method-card:nth-child(3) .method-icon { background: linear-gradient(135deg, var(--amber), #f97316); box-shadow: 0 8px 20px rgba(245, 158, 11, 0.25); }

.method-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.6rem; }

.method-card p { color: var(--text-sub); font-size: 0.92rem; line-height: 1.7; margin-bottom: 1.2rem; }

.method-tag {
  display: inline-block;
  padding: 0.25rem 0.8rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

/* ========== 状态监测面板 ========== */
.status-section {
  background: linear-gradient(135deg, var(--dark-bg), #0b1a2f);
  color: #fff;
  padding: var(--space-lg) 0;
  position: relative;
  overflow: hidden;
}

.status-section::before {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.12), transparent 65%);
}

.status-section .section-head h2 { color: #fff; }
.status-section .section-head .sub { color: rgba(255, 255, 255, 0.6); }
.status-section .section-tag { background: rgba(34, 211, 238, 0.15); color: var(--primary-light); }

.status-board {
  background: var(--dark-panel);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 2.5rem;
  margin-top: 1rem;
}

.status-board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  flex-wrap: wrap;
}

.status-board-title { font-size: 1.1rem; font-weight: 700; display: flex; align-items: center; gap: 0.6rem; }

.status-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--green); display: inline-block; box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15); animation: pulse 2s infinite; }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15); }
  50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0.05); }
}

.status-update-time { font-size: 0.8rem; color: rgba(255, 255, 255, 0.45); }

.status-table { width: 100%; margin-top: 1.5rem; }

.status-row {
  display: grid;
  grid-template-columns: 1fr 1.4fr auto auto;
  align-items: center;
  gap: 1.2rem;
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  margin-bottom: 0.6rem;
  transition: var(--transition);
  border: 1px solid transparent;
}

.status-row:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(34, 211, 238, 0.15); }

.status-name { font-weight: 600; font-size: 0.95rem; color: rgba(255, 255, 255, 0.9); }
.status-list { color: rgba(255, 255, 255, 0.6); font-size: 0.88rem; font-family: "SF Mono", Consolas, Monaco, monospace; }
.status-badge {
  padding: 0.3rem 1rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.status-badge.green { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.status-badge.amber { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }

.status-action a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--primary-light);
  padding: 0.4rem 0.9rem;
  border-radius: 8px;
  border: 1px solid rgba(34, 211, 238, 0.3);
  transition: var(--transition);
}

.status-action a:hover { background: rgba(34, 211, 238, 0.12); border-color: rgba(34, 211, 238, 0.5); }

/* ========== 登录步骤 ========== */
.steps-grid { margin-top: 1rem; }

.step-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.6rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  height: 100%;
  position: relative;
  transition: var(--transition);
  text-align: left;
}

.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.step-num {
  position: absolute;
  top: 1.4rem;
  right: 1.6rem;
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  color: rgba(14, 165, 233, 0.1);
  font-family: "SF Pro Display", -apple-system, sans-serif;
  z-index: 0;
}

.step-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.12), rgba(34, 211, 238, 0.1));
  color: var(--primary-dark);
  font-size: 1.2rem;
  margin-bottom: 1.4rem;
  position: relative;
  z-index: 1;
}

.step-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; position: relative; z-index: 1; }
.step-card p { font-size: 0.9rem; color: var(--text-sub); line-height: 1.7; position: relative; z-index: 1; }

/* ========== 问题解决 ========== */
.problem-section { background: var(--white); }

.problem-item {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.8rem;
  margin-bottom: 1rem;
  transition: var(--transition);
  display: flex;
  gap: 1.4rem;
  align-items: flex-start;
}

.problem-item:hover { border-color: rgba(14, 165, 233, 0.3); background: #f0f9ff; transform: translateX(6px); }

.problem-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.14), rgba(34, 211, 238, 0.1));
  color: var(--primary-dark);
  font-size: 1rem;
}

.problem-item h4 { font-size: 1rem; font-weight: 700; margin-bottom: 0.4rem; }
.problem-item p { font-size: 0.88rem; color: var(--text-sub); line-height: 1.6; }

/* ========== 资讯列表 ========== */
.news-list { margin-top: 0.6rem; }

.news-item {
  display: flex;
  gap: 1.4rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.8rem;
  margin-bottom: 1rem;
  transition: var(--transition);
  align-items: flex-start;
}

.news-item:hover { border-color: rgba(14, 165, 233, 0.3); box-shadow: var(--shadow); transform: translateY(-3px); }

.news-cover {
  width: 150px;
  height: 100px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
}

.news-content { flex: 1; }

.news-meta { display: flex; gap: 0.8rem; align-items: center; margin-bottom: 0.5rem; font-size: 0.78rem; flex-wrap: wrap; }

.news-tag {
  padding: 0.15rem 0.65rem;
  border-radius: 100px;
  background: rgba(14, 165, 233, 0.1);
  color: var(--primary-dark);
  font-weight: 600;
}

.news-date { color: var(--text-light); }

.news-item h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.4rem; transition: var(--transition); }
.news-item:hover h3 { color: var(--primary-dark); }
.news-item p { font-size: 0.86rem; color: var(--text-sub); line-height: 1.6; }

/* ========== FAQ ========== */
.faq-wrap { max-width: 860px; margin: 0 auto; }

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 0.8rem;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: rgba(14, 165, 233, 0.24); }

.faq-item.active { border-color: rgba(14, 165, 233, 0.4); box-shadow: var(--shadow); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 1.6rem;
  text-align: left;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
  transition: var(--transition);
}

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

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(14, 165, 233, 0.1);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.active .faq-icon { transform: rotate(180deg); background: var(--primary); color: #fff; }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner { padding: 0 1.6rem 1.4rem; font-size: 0.9rem; color: var(--text-sub); line-height: 1.8; border-top: 1px solid var(--border); padding-top: 1rem; }

/* ========== CTA ========== */
.cta-section {
  padding: var(--space-lg) 0;
  background: linear-gradient(135deg, var(--dark-bg), #0b1a2f);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 30%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.15), transparent 65%);
}

.cta-box {
  background: var(--dark-panel);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 28px;
  padding: 3.5rem 3rem;
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
}

.cta-box h2 { color: #fff; font-size: 1.8rem; font-weight: 800; margin-bottom: 0.8rem; }
.cta-box p { color: rgba(255, 255, 255, 0.65); max-width: 560px; margin: 0 auto 2rem; font-size: 0.95rem; }
.cta-actions { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* ========== 页脚 ========== */
.site-footer {
  background: #080e1a;
  color: rgba(255, 255, 255, 0.7);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.8;
  margin-top: 1.2rem;
  max-width: 320px;
}

.footer-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-links a:hover { color: var(--primary-light); transform: translateX(4px); }

.footer-links a::before {
  content: '›';
  color: var(--primary);
  font-weight: 700;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1.8rem;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.35);
}

/* ========== 响应式 ========== */
@media screen and (max-width: 1024px) {
  .status-row { grid-template-columns: 1fr 1.2fr auto; }
  .status-list { grid-column: 1 / -1; font-size: 0.82rem; }
  .page-hero h1 { font-size: 2.2rem; }
  :root { --space-lg: 4rem; --space-md: 2.5rem; }
}

@media screen and (max-width: 768px) {
  .header-inner { min-height: 68px; }
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(11, 18, 34, 0.98);
    flex-direction: column;
    align-items: stretch;
    padding: 1.4rem 1.4rem 1.8rem;
    gap: 1.2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 40px rgba(0,0,0,0.35);
    transform: translateY(-120%);
    transition: transform 0.4s ease;
    z-index: 999;
  }
  .main-nav.open { transform: translateY(0); }
  .nav-list { flex-direction: column; gap: 0.5rem; width: 100%; }
  .nav-link { display: block; text-align: center; padding: 0.8rem; font-size: 1rem; width: 100%; }
  .nav-cta { width: 100%; text-align: center; }
  .nav-cta .btn { width: 100%; }
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(255,255,255,0.08);
    align-items: center;
    transition: var(--transition);
  }
  .nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: #fff;
    transition: var(--transition);
  }
  .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); }
  .page-hero { padding: 3.8rem 0 3.5rem; }
  .page-hero h1 { font-size: 1.8rem; }
  .hero-stats { gap: 1.6rem; flex-wrap: wrap; }
  .section { padding: 3.2rem 0; }
  .section-head { margin-bottom: 2rem; }
  .section-head h2 { font-size: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .cta-box { padding: 2.5rem 1.5rem; }
  .news-item { flex-direction: column; }
  .news-cover { width: 100%; height: 180px; }
  .status-board { padding: 1.6rem 1.2rem; }
  .status-row { grid-template-columns: 1fr auto; gap: 0.8rem; padding: 1rem; }
  .status-list { grid-column: 1 / -1; }
  .problem-item { flex-direction: column; gap: 0.8rem; }
  :root { --space-lg: 3.2rem; }
}

@media screen and (max-width: 520px) {
  .grid-container { padding-left: 1rem; padding-right: 1rem; }
  .page-hero h1 { font-size: 1.55rem; }
  .page-hero .lead { font-size: 0.95rem; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .logo-text { font-size: 1.08rem; }
  .section-head h2 { font-size: 1.4rem; }
  .method-card { padding: 1.6rem 1.3rem; }
  .status-board { padding: 1.2rem 0.9rem; }
  .status-row { grid-template-columns: 1fr; gap: 0.7rem; }
  .status-badge, .status-action { width: 100%; }
  .faq-question { padding: 1rem 1.1rem; font-size: 0.9rem; }
  .faq-answer-inner { padding: 0 1.1rem 1.2rem; font-size: 0.85rem; }
  .cta-box { padding: 2rem 1.2rem; }
  .cta-box h2 { font-size: 1.4rem; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .step-card { padding: 1.6rem 1.2rem; }
  .footer-grid { gap: 1.6rem; }
}

/* 焦点可见性 */
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(34, 211, 238, 0.5);
  outline-offset: 2px;
  border-radius: 6px;
}

/* 更新分割线 */
.divider { height: 1px; background: linear-gradient(90deg, transparent, var(--border), transparent); border: none; margin: 0; }