/* roulang page: index */
:root {
            --bg-deep: #0B1120;
            --bg-surface: #0F172A;
            --bg-card: rgba(15, 25, 45, 0.6);
            --accent-cyan: #00E5FF;
            --accent-blue: #1E90FF;
            --accent-glow: #00F0FF;
            --text-primary: #E8ECF1;
            --text-secondary: #A0B4C8;
            --text-muted: #6B7D90;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-input: rgba(0, 229, 255, 0.3);
            --radius-card: 16px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-icon: 12px;
            --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.35);
            --shadow-glow-hover: 0 0 30px rgba(0, 229, 255, 0.7);
            --font-heading: 'PingFang SC', 'Heiti SC', 'HarmonyOS Sans', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --section-pad: 80px;
            --section-pad-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-deep);
            background-image: linear-gradient(180deg, #0B1120 0%, #0F172A 40%, #0B1120 100%);
            min-height: 100vh;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-glow);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            color: var(--text-primary);
            margin-top: 0;
            line-height: 1.35;
        }
        h1 { font-size: 2.125rem; }
        h2 { font-size: 1.625rem; }
        h3 { font-size: 1.2rem; }

        .container-wide {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 960px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 17, 32, 0.92);
            backdrop-filter: blur(18px) saturate(160%);
            -webkit-backdrop-filter: blur(18px) saturate(160%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 0;
            transition: background var(--transition-smooth);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 14px 24px;
            gap: 24px;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header-logo-text {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.03em;
            text-decoration: none;
            white-space: nowrap;
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
            transition: text-shadow var(--transition-fast);
        }
        .header-logo-text:hover {
            text-shadow: 0 0 22px rgba(0, 229, 255, 0.7);
            color: var(--accent-glow);
        }
        .header-divider {
            width: 1px;
            height: 28px;
            background: rgba(255, 255, 255, 0.2);
            flex-shrink: 0;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .header-nav a {
            color: #C8D6E5;
            font-size: 0.95rem;
            font-weight: 500;
            text-decoration: none;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
        }
        .header-nav a:hover {
            color: var(--accent-cyan);
        }
        .header-nav a.active {
            color: var(--accent-cyan);
            border-bottom-color: var(--accent-cyan);
        }
        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: #C8D6E5;
            font-size: 1.5rem;
            line-height: 1;
            transition: color var(--transition-fast);
        }
        .hamburger-toggle:hover {
            color: var(--accent-cyan);
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: var(--section-pad) 0;
            position: relative;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 48px;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }
        .section-title.centered {
            display: block;
            text-align: center;
        }
        .section-title.centered::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 36px;
            max-width: 680px;
        }
        .section-subtitle.centered {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* ========== 玻璃拟态卡片 ========== */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55), 0 0 28px rgba(0, 229, 255, 0.18);
            border-color: rgba(0, 229, 255, 0.35);
        }

        /* ========== 发光按钮 ========== */
        .btn-glow {
            display: inline-block;
            padding: 13px 32px;
            font-size: 1rem;
            font-weight: 600;
            font-family: var(--font-heading);
            color: #fff;
            background: linear-gradient(135deg, #00E5FF, #1E90FF);
            border: none;
            border-radius: var(--radius-btn);
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            text-decoration: none;
            text-align: center;
            transition: all var(--transition-smooth);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-glow:hover {
            box-shadow: var(--shadow-glow-hover);
            filter: brightness(1.12);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-glow:active {
            transform: scale(0.97);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
        }
        .btn-outline {
            display: inline-block;
            padding: 11px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            font-family: var(--font-heading);
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid var(--accent-cyan);
            border-radius: var(--radius-btn);
            cursor: pointer;
            text-decoration: none;
            text-align: center;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: var(--accent-glow);
            color: var(--accent-glow);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
        }
        .btn-outline:active {
            transform: scale(0.97);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
        }

        /* ========== Hero 指标看板 ========== */
        .hero-section {
            padding: 60px 0 70px;
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: radial-gradient(ellipse at 50% 30%, rgba(0, 229, 255, 0.06) 0%, transparent 65%),
                        radial-gradient(ellipse at 75% 60%, rgba(30, 144, 255, 0.05) 0%, transparent 55%),
                        linear-gradient(180deg, #0B1120 0%, #0F172A 100%);
        }
        .hero-geo-lines {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            pointer-events: none;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-geo-line {
            position: absolute;
            background: rgba(0, 229, 255, 0.18);
        }
        .hero-geo-line.line-h1 {
            top: 22%;
            left: 5%;
            width: 35%;
            height: 1px;
            transform: rotate(-3deg);
        }
        .hero-geo-line.line-h2 {
            top: 58%;
            right: 8%;
            width: 28%;
            height: 1px;
            transform: rotate(2deg);
        }
        .hero-geo-line.line-v1 {
            top: 10%;
            right: 18%;
            width: 1px;
            height: 40%;
            transform: rotate(0deg);
        }
        .hero-geo-line.line-circle {
            top: 15%;
            right: 12%;
            width: 120px;
            height: 120px;
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 50%;
            background: transparent;
        }
        .hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .hero-text-wrap {
            max-width: 700px;
            margin-bottom: 36px;
        }
        .hero-h1 {
            font-family: var(--font-heading);
            font-size: 2.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
            text-shadow: 0 0 18px rgba(0, 229, 255, 0.5);
            line-height: 1.3;
        }
        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 580px;
            margin-bottom: 24px;
        }
        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 28px;
        }
        .metric-card {
            background: var(--bg-card);
            backdrop-filter: blur(18px) saturate(160%);
            -webkit-backdrop-filter: blur(18px) saturate(160%);
            border: 1px solid var(--border-subtle);
            border-radius: 14px;
            padding: 20px 24px;
            min-width: 140px;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        .metric-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5), 0 0 18px rgba(0, 229, 255, 0.15);
        }
        .metric-icon {
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 8px;
            animation: pulse-glow 2.4s ease-in-out infinite;
        }
        .metric-card:nth-child(2) .metric-icon { animation-delay: 0.4s; }
        .metric-card:nth-child(3) .metric-icon { animation-delay: 0.8s; }
        @keyframes pulse-glow {
            0%, 100% { opacity: 1; text-shadow: 0 0 8px rgba(0, 229, 255, 0.5); }
            50% { opacity: 0.75; text-shadow: 0 0 20px rgba(0, 229, 255, 0.9); }
        }
        .metric-value {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1.2;
        }
        .metric-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ========== 服务矩阵 ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            display: block;
        }
        .service-card-body {
            padding: 20px 22px 22px;
        }
        .service-card-title {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .service-card-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.5;
        }
        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .service-tag {
            display: inline-block;
            font-size: 0.75rem;
            padding: 4px 12px;
            border: 1px solid rgba(0, 229, 255, 0.5);
            border-radius: 20px;
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.06);
            font-weight: 500;
        }
        .service-tag.hot {
            border-color: #FF6B6B;
            color: #FF6B6B;
            background: rgba(255, 107, 107, 0.08);
        }

        /* ========== 结果对比 ========== */
        .compare-wrapper {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: start;
        }
        .compare-col {
            padding: 28px 24px;
            border-radius: var(--radius-card);
            background: var(--bg-card);
            backdrop-filter: blur(18px) saturate(160%);
            -webkit-backdrop-filter: blur(18px) saturate(160%);
            border: 1px solid var(--border-subtle);
        }
        .compare-col.before {
            border-color: rgba(255, 255, 255, 0.08);
        }
        .compare-col.after {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.08);
        }
        .compare-col-title {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
        }
        .compare-col.before .compare-col-title {
            color: var(--text-muted);
        }
        .compare-col.after .compare-col-title {
            color: var(--accent-cyan);
        }
        .compare-divider {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--accent-cyan);
            padding: 0 8px;
            animation: pulse-arrow 1.6s ease-in-out infinite;
        }
        @keyframes pulse-arrow {
            0%, 100% { opacity: 0.5; transform: translateX(0); }
            50% { opacity: 1; transform: translateX(6px); }
        }
        .compare-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            gap: 12px;
        }
        .compare-item:last-child {
            border-bottom: none;
        }
        .compare-item-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .compare-bar-wrap {
            flex: 1;
            height: 6px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 3px;
            overflow: hidden;
            min-width: 60px;
        }
        .compare-bar-fill {
            height: 100%;
            border-radius: 3px;
            transition: width 1.2s ease;
        }
        .compare-col.before .compare-bar-fill {
            background: rgba(255, 255, 255, 0.3);
        }
        .compare-col.after .compare-bar-fill {
            background: linear-gradient(90deg, #00E5FF, #1E90FF);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }
        .compare-value {
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
            width: 44px;
            text-align: right;
        }
        .compare-col.before .compare-value {
            color: var(--text-muted);
        }
        .compare-col.after .compare-value {
            color: var(--accent-cyan);
        }

        /* ========== 精选分类 ========== */
        .category-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .category-tag-card {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 22px;
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(150%);
            -webkit-backdrop-filter: blur(16px) saturate(150%);
            border: 1px solid var(--border-subtle);
            border-radius: 40px;
            cursor: pointer;
            transition: all var(--transition-smooth);
            text-decoration: none;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .category-tag-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
            color: var(--accent-cyan);
            transform: translateY(-2px);
        }
        .category-tag-icon {
            font-size: 1.2rem;
            color: var(--accent-cyan);
        }

        /* ========== 竖屏种草 ========== */
        .vertical-scroll-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: rgba(0, 229, 255, 0.3) transparent;
        }
        .vertical-scroll-wrap::-webkit-scrollbar {
            height: 5px;
        }
        .vertical-scroll-wrap::-webkit-scrollbar-track {
            background: transparent;
        }
        .vertical-scroll-wrap::-webkit-scrollbar-thumb {
            background: rgba(0, 229, 255, 0.3);
            border-radius: 10px;
        }
        .vertical-card-row {
            display: flex;
            gap: 18px;
            padding: 4px 0;
        }
        .vertical-card {
            flex: 0 0 200px;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(150%);
            -webkit-backdrop-filter: blur(16px) saturate(150%);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
            cursor: pointer;
            text-decoration: none;
            display: flex;
            flex-direction: column;
        }
        .vertical-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5), 0 0 22px rgba(0, 229, 255, 0.15);
        }
        .vertical-card-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            display: block;
        }
        .vertical-card-body {
            padding: 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .vertical-card-title {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .vertical-card-cta {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ========== 资讯区 ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
        }
        .news-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .news-list-item {
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition-fast);
        }
        .news-list-item:hover {
            background: rgba(0, 229, 255, 0.03);
            border-radius: 8px;
            padding-left: 12px;
            margin-left: -12px;
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-cyan);
            flex-shrink: 0;
            margin-top: 7px;
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }
        .news-link {
            font-size: 0.95rem;
            color: #C8D6E5;
            text-decoration: none;
            line-height: 1.5;
            transition: color var(--transition-fast);
            font-weight: 500;
        }
        .news-link:hover {
            color: var(--accent-cyan);
        }
        .news-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
            margin-left: auto;
        }
        .news-sidebar-card {
            padding: 22px;
            border-radius: var(--radius-card);
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(150%);
            -webkit-backdrop-filter: blur(16px) saturate(150%);
            border: 1px solid var(--border-subtle);
        }
        .news-sidebar-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 14px;
        }
        .news-sidebar-title {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .news-sidebar-desc {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ========== 平台保障 ========== */
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .assurance-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius-card);
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(150%);
            -webkit-backdrop-filter: blur(16px) saturate(150%);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }
        .assurance-item:hover {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.1);
        }
        .assurance-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }
        .assurance-title {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .assurance-desc {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ========== FAQ 手风琴 ========== */
        .faq-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .faq-accordion .accordion-item {
            margin-bottom: 12px;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(150%);
            -webkit-backdrop-filter: blur(16px) saturate(150%);
            border: 1px solid var(--border-subtle);
            transition: border-color var(--transition-smooth);
        }
        .faq-accordion .accordion-item.is-active {
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.08);
        }
        .faq-accordion .accordion-title {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 600;
            color: #C8D6E5;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            transition: color var(--transition-fast);
            border: none;
            background: transparent;
            width: 100%;
            text-align: left;
            position: relative;
        }
        .faq-accordion .accordion-title::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-cyan);
            flex-shrink: 0;
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
            transition: box-shadow var(--transition-fast);
        }
        .faq-accordion .accordion-item.is-active .accordion-title {
            color: var(--accent-cyan);
        }
        .faq-accordion .accordion-item.is-active .accordion-title::before {
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.8);
        }
        .faq-accordion .accordion-title::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            margin-left: auto;
            transition: transform var(--transition-smooth);
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .faq-accordion .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--accent-cyan);
        }
        .faq-accordion .accordion-content {
            padding: 0 22px 20px 42px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            display: none;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 0;
            padding-top: 14px;
        }
        .faq-accordion .accordion-item.is-active .accordion-content {
            display: block;
        }

        /* ========== 转化表单 ========== */
        .form-card {
            max-width: 640px;
            margin: 0 auto;
            padding: 36px 32px;
            border-radius: var(--radius-card);
            background: var(--bg-card);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }
        .form-card h2 {
            text-align: center;
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .form-card .form-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 28px;
        }
        .form-input {
            width: 100%;
            padding: 13px 16px;
            background: rgba(11, 17, 32, 0.7);
            border: 1px solid var(--border-input);
            border-radius: var(--radius-input);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
            margin-bottom: 16px;
        }
        .form-input::placeholder {
            color: rgba(160, 180, 200, 0.5);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.25);
            background: rgba(11, 17, 32, 0.9);
        }
        .form-textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-privacy {
            text-align: center;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 14px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: rgba(11, 17, 32, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 32px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .footer-col a {
            display: block;
            margin-bottom: 6px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
        }
        .footer-logo-text {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 10px;
            display: inline-block;
        }
        .footer-warning {
            text-align: center;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-divider {
                transform: rotate(90deg);
                padding: 4px 0;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .assurance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-h1 {
                font-size: 1.8rem;
            }
            .section-block {
                padding: 50px 0;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(11, 17, 32, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 10px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                z-index: 999;
            }
            .header-nav.is-open {
                display: flex;
            }
            .header-nav a {
                padding: 10px 0;
                font-size: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .hamburger-toggle {
                display: block;
            }
            .header-divider {
                display: none;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .hero-metrics {
                flex-direction: column;
                gap: 12px;
            }
            .metric-card {
                min-width: auto;
            }
            .assurance-grid {
                grid-template-columns: 1fr;
            }
            .vertical-card {
                flex: 0 0 170px;
            }
            .vertical-card-img {
                height: 200px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-h1 {
                font-size: 1.5rem;
            }
            .section-block {
                padding: 36px 0;
            }
            .form-card {
                padding: 24px 18px;
            }
            .category-tags {
                gap: 10px;
            }
            .category-tag-card {
                padding: 10px 16px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .hero-h1 {
                font-size: 1.3rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .btn-glow {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
            .btn-outline {
                padding: 9px 18px;
                font-size: 0.85rem;
            }
            .compare-col {
                padding: 18px 14px;
            }
            .glass-card {
                border-radius: 12px;
            }
            .vertical-card {
                flex: 0 0 150px;
            }
            .vertical-card-img {
                height: 170px;
            }
        }