/* roulang page: index */
:root {
            --bg-deep: #0B1520;
            --bg-panel: #101E2B;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent-main: #00D4FF;
            --accent-soft: #33E6A8;
            --accent-warm: #FFC861;
            --text-strong: rgba(255, 255, 255, 0.92);
            --text-body: rgba(255, 255, 255, 0.72);
            --text-mute: rgba(255, 255, 255, 0.5);
            --radius-card: 16px;
            --radius-btn: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(0, 212, 255, 0.35);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 15px;
            overflow-x: hidden;
            position: relative;
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
            z-index: 0;
        }
        body::after {
            content: '';
            position: fixed;
            top: -20%;
            right: -10%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.055) 0%, transparent 65%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, opacity 0.25s ease, border-color 0.25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }
        .site-wrapper {
            position: relative;
            z-index: 1;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(11, 21, 32, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.is-scrolled {
            background: rgba(11, 21, 32, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        }
        .header-top {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-main), var(--accent-soft));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0B1520;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.3);
            font-weight: 800;
        }
        .brand-logo .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-logo .logo-text span {
            color: var(--accent-main);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-search {
            position: relative;
        }
        .header-search input {
            width: 240px;
            height: 38px;
            background: rgba(0, 0, 0, 0.3);
            border: 1px solid var(--glass-border);
            border-radius: 999px;
            padding: 0 40px 0 16px;
            font-size: 13px;
            color: var(--text-strong);
            outline: none;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .header-search input::placeholder {
            color: var(--text-mute);
        }
        .header-search input:focus {
            border-color: var(--accent-main);
            box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
        }
        .header-search i {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-mute);
            font-size: 13px;
            pointer-events: none;
        }
        .btn-cta-mini {
            height: 38px;
            padding: 0 20px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--accent-main), var(--accent-soft));
            color: #0B1520;
            font-size: 13px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.35);
            transition: box-shadow 0.3s, transform 0.2s, opacity 0.2s;
            white-space: nowrap;
        }
        .btn-cta-mini:hover {
            box-shadow: 0 0 28px rgba(0, 212, 255, 0.55);
            transform: translateY(-1px);
        }
        .btn-cta-mini:active {
            transform: scale(0.97);
        }
        .header-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            height: 48px;
            display: flex;
            align-items: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 4px 0;
            white-space: nowrap;
        }
        .nav-tabs a {
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 14px;
            color: var(--text-body);
            transition: background 0.2s, color 0.2s;
            position: relative;
        }
        .nav-tabs a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-strong);
        }
        .nav-tabs a.active {
            background: rgba(0, 212, 255, 0.15);
            color: var(--accent-main);
        }
        .nav-tabs a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-main);
            border-radius: 2px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            background: linear-gradient(100deg, rgba(11, 21, 32, 0.95) 30%, rgba(11, 21, 32, 0.55) 75%),
                url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
            padding: 80px 0 72px;
        }
        .hero .grid-x {
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-strong);
            backdrop-filter: blur(8px);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .hero-badge i {
            color: var(--accent-main);
            font-size: 12px;
        }
        .hero h1 {
            font-size: 44px;
            line-height: 1.25;
            color: var(--text-strong);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero h1 .highlight {
            color: var(--accent-main);
        }
        .hero-sub {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-btns {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            height: 48px;
            padding: 0 32px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--accent-main), var(--accent-soft));
            color: #0B1520;
            font-size: 15px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
            transition: box-shadow 0.3s, transform 0.2s;
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(0, 212, 255, 0.6);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            height: 48px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid var(--glass-border);
            color: var(--text-body);
            font-size: 14px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: border-color 0.3s, color 0.3s, background 0.3s;
        }
        .btn-secondary:hover {
            border-color: var(--accent-main);
            color: var(--accent-main);
            background: rgba(0, 212, 255, 0.06);
        }
        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .metric-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 20px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: border-color 0.3s, background 0.3s, transform 0.3s;
        }
        .metric-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .metric-card .metric-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--accent-main);
            line-height: 1.2;
            text-shadow: 0 0 24px rgba(0, 212, 255, 0.35);
        }
        .metric-card .metric-label {
            font-size: 12px;
            color: var(--text-body);
            margin-top: 4px;
            letter-spacing: 0.3px;
        }

        /* ===== News / Info List ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: rgba(255, 255, 255, 0.02);
        }
        .section-head {
            margin-bottom: 40px;
        }
        .section-head h2 {
            font-size: 32px;
            color: var(--text-strong);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .section-head .section-desc {
            font-size: 14px;
            color: var(--text-body);
            max-width: 640px;
        }
        .news-wrap {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px;
            backdrop-filter: blur(12px);
        }
        .news-list {
            list-style: none;
        }
        .news-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 13px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .news-list li:last-child {
            border-bottom: none;
        }
        .news-list li i {
            color: var(--accent-main);
            font-size: 12px;
            margin-top: 6px;
            flex-shrink: 0;
        }
        .news-list li a {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.6;
            transition: color 0.2s;
        }
        .news-list li a:hover {
            color: var(--accent-main);
        }
        .news-list li .news-meta {
            display: block;
            font-size: 12px;
            color: var(--text-mute);
            margin-top: 2px;
        }
        .hot-sidebar {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            height: 100%;
        }
        .hot-sidebar h4 {
            font-size: 16px;
            color: var(--text-strong);
            margin-bottom: 14px;
            font-weight: 700;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }
        .tag-item {
            padding: 5px 14px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            border-radius: 999px;
            font-size: 12px;
            color: var(--accent-main);
            transition: background 0.2s, border-color 0.2s;
        }
        .tag-item:hover {
            background: rgba(0, 212, 255, 0.2);
            border-color: rgba(0, 212, 255, 0.4);
        }
        .hot-posts {
            list-style: none;
        }
        .hot-posts li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 14px;
            color: var(--text-body);
            display: flex;
            gap: 8px;
            align-items: baseline;
        }
        .hot-posts li:last-child {
            border-bottom: none;
        }
        .hot-posts li .rank {
            font-size: 12px;
            color: var(--accent-warm);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ===== Service Matrix ===== */
        .service-large {
            display: flex;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(12px);
            transition: border-color 0.3s, background 0.3s;
            margin-bottom: 20px;
        }
        .service-large:hover {
            border-color: rgba(0, 212, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
        }
        .service-large .svc-text {
            flex: 1.2;
            padding: 32px;
        }
        .service-large .svc-text h3 {
            font-size: 24px;
            color: var(--text-strong);
            font-weight: 800;
            margin-bottom: 8px;
        }
        .service-large .svc-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .service-large .svc-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 16px;
        }
        .svc-tag {
            padding: 4px 12px;
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.18);
            border-radius: 999px;
            font-size: 12px;
            color: var(--text-body);
        }
        .svc-link {
            font-size: 14px;
            color: var(--accent-main);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .svc-link:hover {
            text-decoration: underline;
        }
        .service-large .svc-img {
            flex: 0.8;
            position: relative;
            min-height: 260px;
            background: url('/assets/images/coverpic/cover-1.jpg') center center / cover no-repeat;
        }
        .service-large .svc-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(16, 30, 43, 0.6), transparent);
        }
        .service-large .svc-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(0, 212, 255, 0.2);
            border: 1px solid rgba(0, 212, 255, 0.3);
            color: var(--accent-main);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            z-index: 2;
            backdrop-filter: blur(6px);
        }
        .service-med {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(12px);
            transition: border-color 0.3s, background 0.3s, transform 0.3s;
            margin-bottom: 20px;
            min-height: 200px;
        }
        .service-med:hover {
            border-color: rgba(0, 212, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .service-med .med-bg {
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
        }
        .service-med .med-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, var(--bg-panel), transparent);
        }
        .service-med h3 {
            font-size: 20px;
            color: var(--text-strong);
            font-weight: 800;
            margin-bottom: 6px;
            position: relative;
            z-index: 1;
        }
        .service-med p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            position: relative;
            z-index: 1;
            max-width: 55%;
        }
        .service-med .med-count {
            position: absolute;
            bottom: 16px;
            right: 20px;
            font-size: 32px;
            font-weight: 800;
            color: rgba(0, 212, 255, 0.5);
            z-index: 1;
        }
        .service-small {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            position: relative;
            backdrop-filter: blur(12px);
            transition: border-color 0.3s, background 0.3s, transform 0.3s;
            margin-bottom: 20px;
        }
        .service-small:hover {
            border-color: rgba(0, 212, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
        }
        .service-small .svc-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid rgba(0, 212, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent-main);
            margin-bottom: 14px;
        }
        .service-small h4 {
            font-size: 17px;
            color: var(--text-strong);
            font-weight: 700;
            margin-bottom: 6px;
        }
        .service-small p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.6;
        }
        .service-small .svc-num {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 14px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.2);
            letter-spacing: 1px;
        }

        /* ===== Compare ===== */
        .compare-wrap {
            display: flex;
            align-items: stretch;
            gap: 24px;
            margin-bottom: 32px;
        }
        .compare-card {
            flex: 1;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px;
            backdrop-filter: blur(12px);
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .compare-card.bad {
            background: rgba(255, 255, 255, 0.03);
            border-color: rgba(255, 255, 255, 0.08);
        }
        .compare-card.bad h3 {
            color: var(--text-mute);
        }
        .compare-card.good {
            border-color: rgba(0, 212, 255, 0.35);
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.12);
        }
        .compare-card h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-strong);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-card.bad h3 i {
            color: rgba(255, 255, 255, 0.3);
        }
        .compare-card.good h3 i {
            color: var(--accent-soft);
        }
        .compare-list {
            list-style: none;
        }
        .compare-list li {
            padding: 9px 0;
            font-size: 14px;
            line-height: 1.7;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-body);
        }
        .compare-card.bad .compare-list li {
            color: var(--text-mute);
        }
        .compare-list li i {
            margin-top: 4px;
            flex-shrink: 0;
            font-size: 14px;
        }
        .compare-card.bad .compare-list li i {
            color: rgba(255, 255, 255, 0.3);
        }
        .compare-card.good .compare-list li i {
            color: var(--accent-soft);
        }
        .recommend-badge {
            position: absolute;
            top: -10px;
            right: 20px;
            background: linear-gradient(135deg, var(--accent-warm), #ff9f43);
            color: #0B1520;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 14px;
            border-radius: 999px;
            box-shadow: 0 4px 16px rgba(255, 200, 97, 0.3);
        }
        .compare-card.good {
            position: relative;
        }
        .compare-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.3);
            color: var(--accent-main);
            font-size: 20px;
            flex-shrink: 0;
            margin-top: 80px;
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.2);
        }
        .data-strip {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            text-align: center;
        }
        .data-strip-item .ds-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent-main);
            line-height: 1.1;
            text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        }
        .data-strip-item .ds-label {
            font-size: 13px;
            color: var(--text-body);
            margin-top: 6px;
        }

        /* ===== Testimonials ===== */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testimonial-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(12px);
            transition: border-color 0.3s, transform 0.3s;
        }
        .testimonial-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            transform: translateY(-3px);
        }
        .testimonial-card .quote {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
            position: relative;
            padding-left: 18px;
            border-left: 2px solid var(--accent-main);
        }
        .testimonial-card .person {
            font-size: 13px;
            color: var(--text-strong);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .testimonial-card .person .avatar {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--accent-main);
        }
        .testimonial-card .person .meta {
            font-size: 12px;
            color: var(--text-mute);
            font-weight: 400;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .step-card {
            text-align: center;
            padding: 32px 24px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            position: relative;
            backdrop-filter: blur(12px);
            transition: border-color 0.3s, transform 0.3s;
        }
        .step-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            transform: translateY(-3px);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-main), var(--accent-soft));
            color: #0B1520;
            font-size: 18px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        }
        .step-card h4 {
            font-size: 17px;
            color: var(--text-strong);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.6;
        }
        .step-card .step-line {
            position: absolute;
            top: 55px;
            right: -24px;
            width: 48px;
            height: 2px;
            background: linear-gradient(to right, var(--accent-main), transparent);
            opacity: 0.4;
        }
        .step-card:last-child .step-line {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion {
            background: transparent;
            border: none;
            list-style: none;
        }
        .accordion-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .accordion-item.is-active {
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
        }
        .accordion-item .accordion-title {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            font-size: 16px;
            color: var(--text-strong);
            font-weight: 600;
            background: transparent;
            border: none;
            min-height: auto;
            line-height: 1.5;
        }
        .accordion-item .accordion-title:hover {
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-strong);
        }
        .accordion-item .accordion-title .faq-num {
            font-size: 13px;
            font-weight: 800;
            color: var(--accent-main);
            background: rgba(0, 212, 255, 0.1);
            border-radius: 6px;
            padding: 2px 8px;
            flex-shrink: 0;
        }
        .accordion-item .accordion-title .faq-plus {
            margin-left: auto;
            position: relative;
            width: 18px;
            height: 18px;
            flex-shrink: 0;
        }
        .accordion-item .accordion-title .faq-plus::before,
        .accordion-item .accordion-title .faq-plus::after {
            content: '';
            position: absolute;
            background: var(--text-body);
            transition: transform 0.3s;
        }
        .accordion-item .accordion-title .faq-plus::before {
            top: 8px;
            left: 0;
            width: 18px;
            height: 2px;
            border-radius: 2px;
        }
        .accordion-item .accordion-title .faq-plus::after {
            top: 0;
            left: 8px;
            width: 2px;
            height: 18px;
            border-radius: 2px;
        }
        .accordion-item.is-active .accordion-title .faq-plus::before {
            transform: rotate(180deg);
            background: var(--accent-main);
        }
        .accordion-item.is-active .accordion-title .faq-plus::after {
            transform: rotate(90deg);
            background: var(--accent-main);
        }
        .accordion-item .accordion-content {
            background: rgba(0, 0, 0, 0.15);
            border: none;
            padding: 0 24px 20px 60px;
            font-size: 14px;
            color: var(--text-mute);
            line-height: 1.8;
        }
        .accordion-item .accordion-content p {
            margin-bottom: 8px;
        }

        /* ===== Lead Form ===== */
        .lead-section {
            background: linear-gradient(180deg, rgba(16, 30, 43, 0.6), rgba(11, 21, 32, 0.9));
            padding: 80px 0;
        }
        .form-card {
            max-width: 720px;
            margin: 0 auto;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 32px;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
        }
        .form-card .form-tip {
            font-size: 13px;
            color: var(--text-mute);
            text-align: center;
            margin-bottom: 8px;
        }
        .form-card h3 {
            font-size: 24px;
            color: var(--text-strong);
            font-weight: 800;
            text-align: center;
            margin-bottom: 24px;
        }
        .form-card label {
            font-size: 13px;
            color: var(--text-body);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .form-card label .required {
            color: var(--accent-main);
            margin-left: 2px;
        }
        .form-card input[type="text"],
        .form-card input[type="tel"],
        .form-card select,
        .form-card textarea {
            width: 100%;
            height: 44px;
            background: rgba(0, 0, 0, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 0 16px;
            font-size: 14px;
            color: var(--text-strong);
            outline: none;
            transition: border-color 0.3s, box-shadow 0.3s;
            margin-bottom: 18px;
            appearance: none;
            -webkit-appearance: none;
        }
        .form-card textarea {
            height: 100px;
            padding: 12px 16px;
            resize: vertical;
            line-height: 1.6;
        }
        .form-card input::placeholder,
        .form-card textarea::placeholder {
            color: var(--text-mute);
        }
        .form-card input:focus,
        .form-card select:focus,
        .form-card textarea:focus {
            border-color: var(--accent-main);
            box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.12), 0 0 16px rgba(0, 212, 255, 0.15);
        }
        .form-card select {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23ffffff' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }
        .form-card select option {
            background: var(--bg-panel);
            color: var(--text-strong);
        }
        .btn-submit {
            width: 100%;
            height: 48px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--accent-main), var(--accent-soft));
            color: #0B1520;
            font-size: 16px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.35);
            transition: box-shadow 0.3s, transform 0.2s;
            margin-top: 4px;
        }
        .btn-submit:hover {
            box-shadow: 0 0 36px rgba(0, 212, 255, 0.55);
            transform: translateY(-1px);
        }
        .btn-submit:active {
            transform: scale(0.98);
        }
        .form-card .privacy-note {
            font-size: 12px;
            color: var(--text-mute);
            text-align: center;
            margin-top: 16px;
            line-height: 1.6;
        }
        .form-contact-row {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: var(--text-body);
        }
        .form-contact-row i {
            color: var(--accent-main);
            margin-right: 4px;
        }
        .form-contact-row .contact-item {
            display: flex;
            align-items: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-strong);
            margin-bottom: 10px;
            display: block;
        }
        .footer-brand .logo-text span {
            color: var(--accent-main);
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--text-mute);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-nav h5 {
            font-size: 14px;
            color: var(--text-strong);
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-nav ul {
            list-style: none;
        }
        .footer-nav ul li {
            margin-bottom: 8px;
        }
        .footer-nav ul li a {
            font-size: 14px;
            color: var(--text-body);
            transition: color 0.2s;
        }
        .footer-nav ul li a:hover {
            color: var(--accent-main);
        }
        .footer-contact h5 {
            font-size: 14px;
            color: var(--text-strong);
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-contact p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.7;
        }
        .footer-contact .contact-icon {
            color: var(--accent-main);
            margin-right: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: var(--text-mute);
        }

        /* ===== Responsive ===== */
        @media (min-width: 1025px) {
            .step-card .step-line {
                display: block;
            }
        }
        @media (max-width: 1024px) {
            .section {
                padding: 64px 0;
            }
            .hero {
                padding: 60px 0 56px;
            }
            .service-small {
                min-height: auto;
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .step-card .step-line {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .section {
                padding: 48px 0;
            }
            .hero {
                min-height: auto;
                padding: 48px 0 40px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
                margin-top: 32px;
            }
            .metric-card {
                padding: 14px;
            }
            .metric-card .metric-num {
                font-size: 24px;
            }
            .header-search input {
                width: 140px;
                padding: 0 32px 0 12px;
                font-size: 12px;
            }
            .brand-logo .logo-text {
                font-size: 16px;
            }
            .btn-cta-mini {
                padding: 0 14px;
                font-size: 12px;
            }
            .header-top {
                gap: 8px;
            }
            .service-large {
                flex-direction: column;
            }
            .service-large .svc-img {
                min-height: 180px;
                order: -1;
            }
            .service-large .svc-text {
                padding: 20px;
            }
            .service-large .svc-text h3 {
                font-size: 20px;
            }
            .service-med p {
                max-width: 100%;
                padding-right: 0;
            }
            .service-med .med-count {
                font-size: 26px;
                opacity: 0.6;
            }
            .compare-wrap {
                flex-direction: column;
                gap: 16px;
            }
            .compare-arrow {
                display: none;
            }
            .compare-card {
                padding: 24px;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                padding: 20px 16px;
            }
            .data-strip-item:last-child {
                grid-column: span 2;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .form-card {
                padding: 20px;
                margin: 0 12px;
            }
            .form-card h3 {
                font-size: 20px;
            }
            .form-contact-row {
                flex-direction: column;
                gap: 8px;
            }
            .news-wrap {
                padding: 20px;
            }
            .section-head h2 {
                font-size: 24px;
            }
        }

/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --bg-primary: #0A1120;
            --bg-secondary: #0D1B2E;
            --bg-dark: #080E1A;
            --primary-color: #1B3A6B;
            --primary-light: #24518C;
            --accent: #00D4FF;
            --accent-light: #2EE6FF;
            --amber: #D4A574;
            --amber-light: #C9A276;
            --text-primary: #E8EEF7;
            --text-secondary: #9FB0C9;
            --text-muted: #5C6C86;
            --border-color: rgba(255,255,255,0.08);
            --card-bg: rgba(255,255,255,0.04);
            --radius-card: 18px;
            --radius-btn: 12px;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
            --shadow-glow: 0 0 20px rgba(0,212,255,0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
            --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Consolas, monospace;
            --container-width: 1200px;
            --space-section: 96px;
            --space-section-mobile: 56px;
        }
        /* ============ 基础 reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--accent-light);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        ul {
            list-style: none;
        }
        .grid-container {
            max-width: var(--container-width);
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            position: relative;
        }
        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none !important;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #06121f !important;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.35);
        }
        .btn-accent:hover {
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.55);
            filter: brightness(1.05);
            transform: translateY(-1px);
        }
        .btn-accent:active {
            transform: scale(0.98);
            box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(255, 255, 255, 0.15);
            color: var(--text-primary) !important;
            backdrop-filter: blur(8px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.3);
            color: #fff !important;
            transform: translateY(-1px);
        }
        .btn-ghost:active {
            transform: scale(0.98);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }
        .btn-block {
            display: flex;
            width: 100%;
        }
        /* ============ 网络跳变导航 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 17, 32, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(8, 14, 26, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(255, 255, 255, 0.04);
        }
        .header-top {
            padding: 14px 0;
        }
        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #06121f;
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
        }
        .brand-logo .logo-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .brand-logo .logo-text span {
            color: var(--accent);
        }
        .header-search {
            flex: 1;
            max-width: 380px;
            position: relative;
        }
        .header-search input {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 8px 38px 8px 16px;
            font-size: 13px;
            color: var(--text-primary);
            transition: all 0.25s ease;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.12);
            background: rgba(255, 255, 255, 0.08);
            outline: none;
        }
        .header-search button {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            font-size: 14px;
            padding: 6px;
            transition: color 0.2s ease;
        }
        .header-search button:hover {
            color: var(--accent);
        }
        .header-cta {
            flex-shrink: 0;
        }
        .header-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            white-space: nowrap;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.2s ease;
            position: relative;
        }
        .channel-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .channel-nav a.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.18), rgba(46, 230, 255, 0.1));
            border: 1px solid rgba(0, 212, 255, 0.25);
        }
        .channel-nav a i {
            font-size: 12px;
            opacity: 0.7;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        body {
            padding-top: 108px;
        }
        /* ============ Hero 首屏 ============ */
        .hero {
            position: relative;
            padding: 72px 0 64px;
            background: linear-gradient(rgba(10, 17, 32, 0.72), rgba(10, 17, 32, 0.88)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 1;
        }
        .hero-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 48px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            border-radius: 999px;
            font-size: 12px;
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero-content h1 {
            font-size: clamp(1.75rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            color: #fff;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 650px;
            margin: 0 auto 32px;
        }
        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        /* Hero 推荐卡片组 */
        .hero-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 36px;
        }
        .hero-card {
            background: var(--card-bg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.2s ease;
            display: flex;
            flex-direction: column;
        }
        .hero-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: var(--shadow-card);
        }
        .hero-card-img {
            height: 140px;
            overflow: hidden;
        }
        .hero-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .hero-card:hover .hero-card-img img {
            transform: scale(1.03);
        }
        .hero-card-info {
            padding: 14px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .hero-card-tag {
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            padding: 3px 10px;
            background: rgba(212, 165, 116, 0.15);
            color: var(--amber);
            border-radius: 999px;
            font-size: 11px;
            font-weight: 600;
        }
        .hero-card-info h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 2px;
        }
        .hero-card-info p {
            font-size: 12px;
            color: var(--text-secondary);
            line-height: 1.4;
        }
        /* ============ 指标看板 ============ */
        .metrics-section {
            padding: var(--space-section) 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .metrics-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle, rgba(0, 212, 255, 0.06) 1px, transparent 1px);
            background-size: 28px 28px;
            pointer-events: none;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
            position: relative;
            z-index: 1;
        }
        .metric-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: all 0.2s ease;
        }
        .metric-card:hover {
            border-color: rgba(0, 212, 255, 0.25);
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .metric-icon {
            width: 44px;
            height: 44px;
            margin: 0 auto 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(46, 230, 255, 0.05));
            border-radius: 12px;
            color: var(--accent);
            font-size: 18px;
        }
        .metric-number {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .metric-number span {
            font-size: 18px;
            color: var(--accent);
        }
        .metric-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .metric-desc {
            font-size: 11px;
            color: var(--text-muted);
            line-height: 1.4;
        }
        /* ============ 通用区块标题 ============ */
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-header .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.15);
            border-radius: 999px;
            font-size: 12px;
            color: var(--accent);
            margin-bottom: 14px;
            font-weight: 500;
        }
        .section-header h2 {
            font-size: clamp(1.75rem, 3vw, 2.25rem);
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin-bottom: 14px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* ============ 服务矩阵 ============ */
        .services-section {
            padding: var(--space-section) 0;
            background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-primary) 100%);
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.2s ease;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: var(--shadow-card);
        }
        .service-card .card-img {
            position: relative;
            height: 160px;
            overflow: hidden;
        }
        .service-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.25s ease;
        }
        .service-card:hover .card-img img {
            transform: scale(1.03);
        }
        .service-card .category-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            background: rgba(212, 165, 116, 0.85);
            color: #1a1405;
            border-radius: 999px;
            font-size: 11px;
            font-weight: 600;
        }
        .service-card .card-body {
            padding: 18px 20px 8px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .service-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .service-card .card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }
        .service-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .service-card .card-footer span {
            font-size: 12px;
            color: var(--text-muted);
        }
        .service-card .card-footer a {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s ease;
        }
        .service-card .card-footer a:hover {
            gap: 10px;
            color: var(--accent-light);
        }
        /* 宽卡 */
        .service-card.featured {
            grid-column: span 2;
            flex-direction: row;
        }
        .service-card.featured .card-img {
            height: auto;
            min-height: 220px;
            width: 45%;
            flex-shrink: 0;
        }
        .service-card.featured .card-body {
            padding: 24px;
            justify-content: center;
        }
        .service-card.featured .card-body h3 {
            font-size: 22px;
        }
        .service-card.featured .card-body p {
            font-size: 14px;
        }
        .service-card.featured .card-footer {
            border-top: none;
            padding: 0 24px 24px;
        }
        /* ============ 资讯区 ============ */
        .news-section {
            padding: var(--space-section) 0;
            background: var(--bg-secondary);
        }
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 32px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-item {
            display: flex;
            align-items: baseline;
            gap: 16px;
            padding: 16px 18px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            transition: all 0.2s ease;
        }
        .news-item:hover {
            border-color: rgba(0, 212, 255, 0.25);
            background: rgba(255, 255, 255, 0.06);
            transform: translateX(4px);
        }
        .news-date {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-muted);
            flex-shrink: 0;
            min-width: 80px;
        }
        .news-item a {
            color: var(--text-primary);
            font-size: 14px;
            font-weight: 500;
            line-height: 1.5;
        }
        .news-item a:hover {
            color: var(--accent);
        }
        .news-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            color: var(--accent);
            font-size: 14px;
            font-weight: 500;
        }
        .news-more:hover {
            color: var(--accent-light);
            gap: 10px;
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-block {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px;
        }
        .sidebar-block h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            padding: 5px 14px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            font-size: 12px;
            color: var(--text-secondary);
            transition: all 0.2s ease;
        }
        .tag-cloud a:hover {
            background: rgba(0, 212, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.25);
            color: var(--accent);
        }
        .recommend-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .recommend-list a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
            padding: 8px;
            border-radius: 10px;
            transition: all 0.2s ease;
        }
        .recommend-list a:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--accent);
        }
        .recommend-list a i {
            color: var(--amber);
            font-size: 12px;
            margin-top: 4px;
        }
        /* ============ 结果对比 ============ */
        .compare-section {
            padding: var(--space-section) 0;
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-dark) 100%);
        }
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1.15fr 1fr;
            gap: 24px;
            align-items: stretch;
        }
        .compare-col {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 32px 26px;
            display: flex;
            flex-direction: column;
            transition: all 0.2s ease;
        }
        .compare-col:hover {
            transform: translateY(-2px);
        }
        .compare-col h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .compare-col .compare-sub {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .compare-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            flex: 1;
            margin-bottom: 24px;
        }
        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .compare-list li i {
            margin-top: 4px;
            font-size: 13px;
            flex-shrink: 0;
        }
        .compare-list li i.fa-circle-check {
            color: var(--accent);
        }
        .compare-list li i.fa-circle-xmark {
            color: #8c6a5a;
            opacity: 0.5;
        }
        .compare-col.featured {
            background: linear-gradient(145deg, rgba(0, 212, 255, 0.06), rgba(46, 230, 255, 0.02));
            border: 1px solid rgba(0, 212, 255, 0.3);
            box-shadow: 0 0 40px rgba(0, 212, 255, 0.08);
            position: relative;
        }
        .compare-col.featured::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            left: 30px;
            padding: 4px 16px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #06121f;
            font-size: 12px;
            font-weight: 700;
            border-radius: 999px;
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.4);
        }
        .compare-col.featured h3 {
            color: var(--accent);
        }
        .compare-col .btn {
            margin-top: auto;
        }
        /* ============ FAQ ============ */
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--bg-secondary);
        }
        .faq-container {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.25s ease, background 0.25s ease;
        }
        .faq-item.active {
            border-color: rgba(0, 212, 255, 0.3);
            background: rgba(255, 255, 255, 0.05);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            position: relative;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent);
            font-size: 12px;
            transition: transform 0.25s ease, background 0.25s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(90deg);
            background: rgba(0, 212, 255, 0.2);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            border-left: 3px solid var(--accent);
            margin-left: 20px;
        }
        .faq-footer-note {
            text-align: center;
            margin-top: 24px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .faq-footer-note a {
            color: var(--accent);
            font-weight: 500;
        }
        /* ============ 转化表单 ============ */
        .contact-section {
            padding: var(--space-section) 0;
            position: relative;
            background: linear-gradient(rgba(10, 17, 32, 0.8), rgba(10, 17, 32, 0.92)), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
        }
        .contact-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(8, 14, 26, 0.35);
            backdrop-filter: blur(2px);
            pointer-events: none;
        }
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .contact-info h2 {
            font-size: clamp(1.75rem, 3vw, 2.25rem);
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .contact-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .contact-info .contact-note {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .contact-info .contact-note i {
            color: var(--accent);
            font-size: 15px;
        }
        .contact-form-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 212, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3), inset 0 0 40px rgba(0, 212, 255, 0.02);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 12px 14px;
            font-size: 14px;
            color: var(--text-primary);
            transition: all 0.25s ease;
            font-family: var(--font-sans);
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
            background: rgba(255, 255, 255, 0.08);
            outline: none;
        }
        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%235C6C86' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            cursor: pointer;
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .form-submit-btn {
            width: 100%;
            position: relative;
        }
        .form-submit-btn .btn {
            width: 100%;
            position: relative;
        }
        .form-submit-btn .btn.loading {
            pointer-events: none;
            opacity: 0.7;
        }
        .form-submit-btn .btn.loading::after {
            content: '';
            display: inline-block;
            width: 16px;
            height: 16px;
            border: 2px solid rgba(6, 18, 31, 0.3);
            border-top-color: #06121f;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
            margin-left: 8px;
        }
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }
        .form-success {
            display: none;
            text-align: center;
            padding: 24px 0;
            color: var(--accent);
        }
        .form-success.show {
            display: block;
        }
        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #06121f;
        }
        .footer-brand .footer-logo span {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: all 0.2s ease;
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .footer-contact li i {
            color: var(--accent);
            margin-top: 4px;
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 24px 0;
            text-align: center;
        }
        .footer-copyright {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .footer-seo-tags {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }
        .footer-seo-tags span {
            color: var(--text-secondary);
        }
        /* ============ 响应式 ============ */
        @media screen and (max-width: 1024px) {
            body {
                padding-top: 104px;
            }
            .metrics-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-card.featured {
                grid-column: span 2;
                flex-direction: row;
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .compare-col.featured {
                order: -1;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .contact-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media screen and (max-width: 640px) {
            body {
                padding-top: 72px;
            }
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-top-inner {
                gap: 12px;
            }
            .brand-logo .logo-text {
                font-size: 15px;
            }
            .header-search {
                display: none;
            }
            .header-cta .btn {
                padding: 8px 14px;
                font-size: 12px;
            }
            .menu-toggle {
                display: block;
            }
            .header-bottom {
                display: none;
            }
            .header-bottom.open {
                display: block;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 14, 26, 0.97);
                backdrop-filter: blur(12px);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                padding: 10px 16px 16px;
            }
            .channel-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                overflow-x: visible;
            }
            .channel-nav a {
                padding: 10px 14px;
                font-size: 14px;
            }
            .hero {
                padding: 56px 0 40px;
            }
            .hero-content h1 {
                font-size: 24px;
                line-height: 1.25;
            }
            .hero-sub {
                font-size: 14px;
            }
            .hero-cards {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .hero-card-img {
                height: 120px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .metric-card {
                padding: 18px 14px;
            }
            .metric-number {
                font-size: 22px;
            }
            .metric-desc {
                font-size: 10px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .service-card.featured {
                grid-column: span 1;
                flex-direction: column;
            }
            .service-card.featured .card-img {
                width: 100%;
                height: 160px;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .compare-col {
                padding: 24px 18px;
            }
            .contact-form-card {
                padding: 24px 18px;
            }
        }
        @media screen and (max-width: 520px) {
            .hero-cta {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta .btn {
                width: 100%;
            }
            .metrics-grid {
                gap: 10px;
            }
            .metric-icon {
                width: 36px;
                height: 36px;
                font-size: 14px;
            }
            .metric-number {
                font-size: 19px;
            }
        }