/* roulang page: index */
:root {
        --brand-primary: #ef8a1f;
        --brand-secondary: #b45113;
        --bg-light: #f8f7f4;
        --bg-white: #ffffff;
        --text-dark: #1e293b;
        --text-muted: #64748b;
        --border-color: #e6e0d5;
        --radius-card: 16px;
        --radius-btn: 9999px;
        --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { 
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        background: var(--bg-light);
        color: var(--text-dark);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
    }
    .container-custom { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 24px; padding-right: 24px; }
    .hero-bg {
        background: linear-gradient(135deg, #0f172a 0%, #1e293b 55%, #2d1b0e 100%);
        position: relative;
        overflow: hidden;
    }
    .hero-bg::before {
        content:'';
        position: absolute;
        top: 0; left: 0; right: 0; bottom: 0;
        background-image: url('/assets/images/backpic/back-1.jpg');
        background-size: cover;
        background-position: center;
        opacity: 0.18;
    }
    .hero-bg::after {
        content:'';
        position: absolute;
        bottom: -40%; right: -10%;
        width: 600px; height: 600px;
        background: radial-gradient(circle, rgba(239,138,31,0.16) 0%, transparent 70%);
    }
    .section-padding { padding: 88px 0; }
    .section-padding-sm { padding: 56px 0; }
    .nav-solid {
        background: rgba(255,255,255,0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(0,0,0,0.06);
    }
    .nav-logo { letter-spacing: -0.02em; }
    .nav-link {
        color: #475569;
        font-weight: 500;
        padding: 8px 16px;
        border-radius: 999px;
        transition: all 0.2s ease;
    }
    .nav-link:hover { background: #fff7ed; color: #b45113; }
    .nav-link.active { background: #fbede0; color: #b45113; font-weight: 600; }
    .btn-primary {
        background: linear-gradient(135deg, #ef8a1f, #d96e14);
        color: #fff;
        border: none;
        padding: 12px 28px;
        border-radius: 9999px;
        font-weight: 600;
        font-size: 15px;
        box-shadow: 0 8px 24px rgba(239,138,31,0.32);
        transition: all 0.25s ease;
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(239,138,31,0.42); background: linear-gradient(135deg, #f59e2d, #e07a12); }
    .btn-primary:active { transform: translateY(0); }
    .btn-outline {
        background: transparent;
        border: 1.5px solid rgba(255,255,255,0.6);
        color: #fff;
        padding: 12px 28px;
        border-radius: 9999px;
        font-weight: 600;
        font-size: 15px;
        transition: all 0.25s ease;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        backdrop-filter: blur(4px);
    }
    .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-2px); }
    .btn-outline-dark {
        background: transparent;
        border: 1.5px solid #d96e14;
        color: #d96e14;
        padding: 10px 24px;
        border-radius: 9999px;
        font-weight: 600;
        font-size: 14px;
        transition: all 0.2s ease;
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }
    .btn-outline-dark:hover { background: #fff7ed; transform: translateY(-1px); }
    .card-generic {
        background: #fff;
        border-radius: 16px;
        box-shadow: 0 4px 24px rgba(0,0,0,0.06);
        border: 1px solid rgba(0,0,0,0.04);
        transition: all 0.3s ease;
    }
    .card-generic:hover {
        box-shadow: 0 12px 40px rgba(0,0,0,0.1);
        transform: translateY(-4px);
    }
    .tag-badge {
        display: inline-block;
        padding: 4px 14px;
        background: #fff7ed;
        color: #b45113;
        border-radius: 9999px;
        font-size: 13px;
        font-weight: 600;
    }
    .tag-badge-dark {
        display: inline-block;
        padding: 4px 14px;
        background: rgba(255,255,255,0.1);
        color: #fcdba8;
        border-radius: 9999px;
        font-size: 13px;
        font-weight: 500;
        border: 1px solid rgba(255,255,255,0.15);
    }
    .number-stat {
        font-size: 42px;
        font-weight: 800;
        line-height: 1.1;
        background: linear-gradient(135deg, #ef8a1f, #b45113);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .section-title { font-size: 36px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.25; }
    .section-subtitle { font-size: 17px; color: #64748b; max-width: 720px; }
    .divider-light { height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent); border: none; }
    .timeline-item { position: relative; padding-left: 28px; }
    .timeline-item::before {
        content:'';
        position: absolute;
        left: 6px; top: 10px;
        width: 12px; height: 12px;
        border-radius: 50%;
        background: #ef8a1f;
        box-shadow: 0 0 0 4px rgba(239,138,31,0.2);
    }
    .timeline-line { position: relative; }
    .timeline-line::after {
        content: '';
        position: absolute;
        left: 11px; top: 24px; bottom: 24px;
        width: 2px;
        background: linear-gradient(to bottom, #ef8a1f, #fcdba8);
        border-radius: 2px;
    }
    .faq-item {
        background: #fff;
        border: 1px solid rgba(0,0,0,0.06);
        border-radius: 14px;
        padding: 24px 28px;
        transition: box-shadow 0.2s ease;
    }
    .faq-item:hover { box-shadow: 0 8px 28px rgba(0,0,0,0.08); }
    .review-card {
        background: #fff;
        border-radius: 16px;
        padding: 24px;
        box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    }
    .news-list-item {
        padding: 14px 0;
        border-bottom: 1px solid #f1f0ec;
        transition: padding 0.2s ease;
    }
    .news-list-item:hover { padding-left: 6px; }
    .news-list-item:last-child { border-bottom: none; }
    input:focus, textarea:focus, select:focus { outline: 2px solid rgba(239,138,31,0.4); outline-offset: 2px; }
    .mobile-menu { display: none; }
    @media (max-width: 768px) {
        .mobile-menu { display: flex; }
        .desktop-menu { display: none; }
        .section-padding { padding: 56px 0; }
        .section-title { font-size: 28px; }
        .hero-headline { font-size: 30px !important; }
        .hero-subheadline { font-size: 16px !important; }
        .number-stat { font-size: 32px; }
        .container-custom { padding-left: 18px; padding-right: 18px; }
    }
    @media (max-width: 520px) {
        .container-custom { padding-left: 14px; padding-right: 14px; }
        .section-padding { padding: 48px 0; }
        .section-title { font-size: 24px; }
        .card-generic { padding: 20px; }
        .btn-primary, .btn-outline { padding: 10px 20px; font-size: 14px; }
    }
    .faq-answer { font-size: 15px; color: #475569; line-height: 1.7; }
    .badge-icon { color: #ef8a1f; }
    .footer-link { color: #94a3b8; font-size: 15px; transition: color 0.2s; }
    .footer-link:hover { color: #fcdba8; }
    .news-sidebar-item { border-left: 3px solid #ef8a1f; padding-left: 14px; }
    /* 移动端菜单 */
    #mobile-drawer { transition: transform 0.3s ease; }
    @media (max-width: 768px) {
        #mobile-drawer.active { transform: translateX(0); }
    }

/* roulang page: category1 */
:root {
            --brand-50: #f0f9ff;
            --brand-100: #e0f2fe;
            --brand-200: #bae6fd;
            --brand-300: #7dd3fc;
            --brand-400: #38bdf8;
            --brand-500: #0ea5e9;
            --brand-600: #0284c7;
            --brand-700: #0369a1;
            --brand-800: #075985;
            --brand-900: #0c4a6e;
            --deep-50: #f8fafc;
            --deep-100: #f1f5f9;
            --deep-200: #e2e8f0;
            --deep-300: #cbd5e1;
            --deep-400: #94a3b8;
            --deep-500: #64748b;
            --deep-600: #475569;
            --deep-700: #334155;
            --deep-800: #1e293b;
            --deep-900: #0f172a;
            --deep-950: #020617;
            --radius-lg: 1rem;
            --radius-xl: 1.4rem;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
            --shadow-md: 0 6px 24px rgba(15, 23, 42, .08);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            color: var(--deep-800);
            background-color: var(--deep-50);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img,
        svg,
        video {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 导航 ===== */
        .nav-solid {
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(15, 23, 42, .07);
            box-shadow: 0 2px 18px rgba(15, 23, 42, .05);
            transition: box-shadow .3s ease;
        }
        .nav-solid.is-scrolled {
            box-shadow: 0 4px 24px rgba(15, 23, 42, .09);
        }
        .nav-logo span.block {
            line-height: 1.3;
        }
        .nav-link {
            position: relative;
            padding: .45rem .95rem;
            font-size: .9375rem;
            font-weight: 500;
            color: var(--deep-600);
            border-radius: .75rem;
            transition: color .25s, background .25s;
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }
        .nav-link i {
            font-size: .875rem;
            opacity: .75;
        }
        .nav-link:hover {
            color: var(--brand-600);
            background: rgba(14, 165, 233, .08);
        }
        .nav-link.active {
            color: var(--brand-700);
            background: rgba(14, 165, 233, .1);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 2px;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--brand-500), var(--brand-700));
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            padding: .6rem 1.3rem;
            border-radius: .85rem;
            font-weight: 600;
            font-size: .9375rem;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            color: #fff;
            box-shadow: 0 4px 18px rgba(2, 132, 199, .28);
            transition: transform .3s, box-shadow .3s;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(2, 132, 199, .35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(2, 132, 199, .3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            padding: .55rem 1.25rem;
            border-radius: .85rem;
            font-weight: 600;
            font-size: .9375rem;
            border: 1.5px solid var(--deep-200);
            color: var(--deep-700);
            background: #fff;
            transition: border-color .3s, color .3s, transform .3s;
        }
        .btn-outline:hover {
            border-color: var(--brand-400);
            color: var(--brand-600);
            transform: translateY(-2px);
        }
        .mobile-menu {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: .7rem;
            background: var(--brand-50);
            color: var(--brand-600);
            align-items: center;
            justify-content: center;
            transition: background .3s;
        }
        .mobile-menu:hover {
            background: var(--brand-100);
        }
        .desktop-menu {
            display: flex;
        }
        @media (max-width: 768px) {
            .desktop-menu {
                display: none;
            }
            .mobile-menu {
                display: inline-flex;
            }
            .btn-primary.hidden {
                display: none;
            }
        }

        /* 移动端抽屉 */
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(15, 23, 42, .4);
            z-index: 60;
            opacity: 0;
            visibility: hidden;
            transition: opacity .35s, visibility .35s;
        }
        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .drawer-panel {
            position: fixed;
            top: 0;
            right: 0;
            height: 100%;
            width: 280px;
            background: #fff;
            z-index: 61;
            padding: 1.5rem 1.25rem;
            box-shadow: -12px 0 40px rgba(15, 23, 42, .18);
            transform: translateX(100%);
            transition: transform .4s cubic-bezier(.4, 0, .2, 1);
            display: flex;
            flex-direction: column;
        }
        .drawer-panel.active {
            transform: translateX(0);
        }
        .drawer-close {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--deep-100);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--deep-600);
            transition: background .3s;
            margin-left: auto;
        }
        .drawer-close:hover {
            background: var(--deep-200);
        }
        .drawer-link {
            display: block;
            padding: .65rem 1rem;
            border-radius: .75rem;
            font-size: .95rem;
            font-weight: 500;
            color: var(--deep-600);
            transition: background .25s, color .25s;
        }
        .drawer-link:hover {
            background: var(--deep-50);
            color: var(--brand-600);
        }
        .drawer-link.active {
            background: var(--brand-50);
            color: var(--brand-700);
            font-weight: 600;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, var(--deep-900) 0%, #082f49 55%, #0c4a6e 100%);
            min-height: 620px;
            display: flex;
            align-items: center;
            overflow: hidden;
            isolation: isolate;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: .22;
            z-index: -1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(14, 165, 233, .18), transparent 70%);
            z-index: -1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            padding: .35rem 1rem;
            border-radius: 999px;
            background: rgba(14, 165, 233, .15);
            border: 1px solid rgba(14, 165, 233, .35);
            color: #bae6fd;
            font-size: .85rem;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }
        .hero-title {
            font-size: clamp(1.9rem, 4.5vw, 3.3rem);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -.02em;
        }
        .hero-subtitle {
            font-size: clamp(.95rem, 1.4vw, 1.1rem);
            color: rgba(226, 232, 240, .9);
            line-height: 1.8;
            max-width: 540px;
        }
        .hero-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: 1.3rem;
            backdrop-filter: blur(12px);
            padding: 1.6rem;
            box-shadow: 0 20px 50px rgba(0, 0, 0, .25);
        }
        .hero-card-list {
            display: flex;
            flex-direction: column;
            gap: .8rem;
        }
        .hero-card-list li {
            display: flex;
            align-items: center;
            gap: .75rem;
            color: rgba(248, 250, 252, .92);
            font-size: .92rem;
        }
        .hero-card-list li i {
            flex: none;
            width: 30px;
            height: 30px;
            border-radius: .6rem;
            background: rgba(14, 165, 233, .2);
            color: #7dd3fc;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .8rem;
        }

        /* ===== 区块通用 ===== */
        .section {
            padding: 4.5rem 0;
        }
        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2.2rem);
            font-weight: 800;
            color: var(--deep-800);
            letter-spacing: -.01em;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: .95rem;
            color: var(--deep-500);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .8rem;
            font-weight: 600;
            color: var(--brand-600);
            background: var(--brand-50);
            padding: .3rem .9rem;
            border-radius: 999px;
            letter-spacing: .03em;
            text-transform: uppercase;
            border: 1px solid rgba(14, 165, 233, .18);
        }

        /* ===== 指标看板 ===== */
        .stats-section {
            background: linear-gradient(180deg, #fff, var(--deep-50));
            padding: 3rem 0;
        }
        .stat-card {
            background: #fff;
            border: 1px solid rgba(15, 23, 42, .06);
            border-radius: var(--radius-lg);
            padding: 1.6rem 1.4rem;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: transform .35s, box-shadow .35s;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .stat-label {
            font-size: .9rem;
            color: var(--deep-500);
            margin-top: .35rem;
        }

        /* ===== 服务矩阵 ===== */
        .services-section {
            background: #fff;
        }
        .service-card {
            background: #fff;
            border: 1px solid rgba(15, 23, 42, .07);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .4s, box-shadow .4s;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .service-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s;
        }
        .service-card:hover .service-card-img img {
            transform: scale(1.05);
        }
        .service-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(15, 23, 42, .35));
        }
        .service-card-body {
            padding: 1.4rem 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--deep-800);
        }
        .service-card p {
            font-size: .88rem;
            color: var(--deep-500);
            line-height: 1.6;
            margin-top: .4rem;
            flex: 1;
        }
        .tag {
            display: inline-block;
            font-size: .75rem;
            font-weight: 500;
            padding: .2rem .7rem;
            border-radius: 999px;
            background: var(--brand-50);
            color: var(--brand-700);
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            font-weight: 600;
            font-size: .9rem;
            color: var(--brand-600);
            margin-top: 1rem;
            transition: gap .3s;
        }
        .card-link:hover {
            gap: .6rem;
            color: var(--brand-700);
        }

        /* ===== 对比 ===== */
        .compare-section {
            background: var(--deep-900);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .compare-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: .1;
        }
        .compare-card {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-xl);
            padding: 1.8rem;
            backdrop-filter: blur(8px);
            transition: transform .3s, border-color .3s;
        }
        .compare-card:hover {
            transform: translateY(-4px);
            border-color: rgba(14, 165, 233, .4);
        }
        .compare-card.bad {
            border-left: 3px solid #ef4444;
        }
        .compare-card.good {
            border-left: 3px solid #10b981;
        }
        .compare-item {
            display: flex;
            align-items: flex-start;
            gap: .65rem;
            padding: .55rem 0;
            font-size: .88rem;
            color: rgba(248, 250, 252, .9);
            border-bottom: 1px dashed rgba(255, 255, 255, .1);
        }
        .compare-item:last-child {
            border-bottom: none;
        }
        .compare-item i.fa-check {
            color: #34d399;
            font-size: .85rem;
            margin-top: .25rem;
        }
        .compare-item i.fa-xmark {
            color: #f87171;
            font-size: .85rem;
            margin-top: .25rem;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border: 1px solid rgba(15, 23, 42, .07);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: .8rem;
            transition: box-shadow .3s, border-color .3s;
        }
        .faq-item:hover {
            border-color: rgba(14, 165, 233, .3);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: .95rem;
            color: var(--deep-700);
            cursor: pointer;
            border-radius: var(--radius-lg);
            transition: background .25s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: var(--deep-50);
        }
        .faq-icon {
            width: 26px;
            height: 26px;
            flex: none;
            border-radius: 50%;
            background: var(--brand-50);
            color: var(--brand-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .75rem;
            transition: transform .35s;
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 1.4rem 1.2rem;
            font-size: .9rem;
            color: var(--deep-500);
            line-height: 1.75;
        }

        /* ===== 表单/CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, #082f49, #0c4a6e);
            padding: 4.5rem 0;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            opacity: .15;
            z-index: -2;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(14, 165, 233, .25), transparent 70%);
            z-index: -1;
        }
        .form-card {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .15);
            border-radius: var(--radius-xl);
            padding: 2.2rem;
            backdrop-filter: blur(14px);
            box-shadow: 0 24px 60px rgba(0, 0, 0, .3);
        }
        .form-card h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
        }
        .form-card p {
            color: rgba(226, 232, 240, .8);
            font-size: .9rem;
        }
        .form-label {
            display: block;
            font-size: .82rem;
            font-weight: 600;
            color: rgba(241, 245, 249, .85);
            margin-bottom: .4rem;
            letter-spacing: .02em;
        }
        .form-input {
            width: 100%;
            border-radius: .75rem;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            padding: .7rem 1rem;
            font-size: .92rem;
            color: #fff;
            transition: border-color .3s, background .3s;
        }
        .form-input::placeholder {
            color: rgba(148, 163, 184, .7);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--brand-400);
            background: rgba(255, 255, 255, .14);
            box-shadow: 0 0 0 3px rgba(14, 165, 233, .25);
        }
        .form-select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            background-size: 14px;
        }
        .form-select option {
            color: var(--deep-800);
        }

        /* ===== 页脚 ===== */
        .footer-link {
            color: var(--deep-400);
            font-size: .88rem;
            transition: color .25s, padding-left .25s;
            display: inline-block;
        }
        .footer-link:hover {
            color: var(--brand-300);
            padding-left: 4px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-section {
                min-height: auto;
                padding: 4rem 0;
            }
            .section {
                padding: 3.5rem 0;
            }
        }
        @media (max-width: 768px) {
            .desktop-menu {
                display: none;
            }
            .mobile-menu {
                display: inline-flex;
            }
            .hero-section {
                padding: 3rem 0;
            }
            .hero-card {
                margin-top: 1.5rem;
            }
            .section {
                padding: 2.8rem 0;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: .8rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr) !important;
            }
            .compare-grid {
                grid-template-columns: 1fr !important;
            }
            .form-card {
                padding: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.6rem;
            }
            .nav-logo span.text-lg {
                font-size: .82rem;
            }
            .nav-logo span.block {
                font-size: .7rem !important;
            }
            .btn-primary {
                padding: .5rem 1rem;
                font-size: .85rem;
            }
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }