:root {
      --c-primary: #FF3B5C;
      --c-primary-dark: #E02545;
      --c-secondary: #0BD3D3;
      --c-accent: #FFD500;
      --c-deep: #14142B;
      --c-navy: #23233F;
      --c-text: #2C2C3A;
      --c-muted: #6B6B80;
      --c-bg: #F7F7FB;
      --c-card: #FFFFFF;
      --c-line: #E6E6EF;
      --radius: 16px;
      --shadow-sm: 0 4px 14px rgba(20, 20, 43, 0.06);
      --shadow-md: 0 12px 32px rgba(20, 20, 43, 0.10);
      --shadow-lg: 0 22px 48px rgba(255, 59, 92, 0.16);
      --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font);
      color: var(--c-text);
      background: var(--c-bg);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    section { scroll-margin-top: 84px; }
    .wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    /* ===== 顶部导航 ===== */
    .site-header {
      position: sticky; top: 0; z-index: 100;
      background: rgba(20, 20, 43, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .header-inner {
      display: flex; align-items: center; justify-content: space-between;
      height: 68px; max-width: 1280px; margin: 0 auto; padding: 0 24px;
    }
    .brand { display: flex; align-items: center; gap: 12px; }
    .ai-page-logo { width: 40px; height: 40px; border-radius: 10px; object-fit: contain; background:#fff; padding:4px; }
    .brand-text { color: #fff; font-weight: 700; font-size: 19px; letter-spacing: .5px; }
    .brand-text small { display:block; font-size: 11px; font-weight:400; color: var(--c-secondary); letter-spacing: 1px; }
    .nav-links { display: flex; align-items: center; gap: 0; }
    .nav-links a {
      color: rgba(255,255,255,0.82); font-size: 14px; padding: 8px 12px;
      border-radius: 8px; transition: .25s; white-space: nowrap;
    }
    .nav-links a:hover { color: #fff; background: rgba(255, 59, 92, 0.25); }
    .nav-cta {
      background: var(--c-primary); color: #fff !important;
      padding: 9px 18px !important; border-radius: 999px; font-weight: 600;
      box-shadow: 0 6px 18px rgba(255,59,92,0.4);
    }
    .nav-cta:hover { background: var(--c-primary-dark); transform: translateY(-1px); }
    .menu-toggle {
      display: none; width: 42px; height: 42px; background: transparent;
      border: 1px solid rgba(255,255,255,0.25); border-radius: 10px; cursor: pointer;
      flex-direction: column; justify-content: center; align-items: center; gap: 5px;
    }
    .menu-toggle span { width: 20px; height: 2px; background: #fff; border-radius: 2px; transition:.3s; }
    .menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.open span:nth-child(2) { opacity: 0; }
    .menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* ===== Hero 首屏（无图片） ===== */
    .hero {
      position: relative; overflow: hidden;
      background:
        radial-gradient(circle at 12% 18%, rgba(11,211,211,0.20), transparent 42%),
        radial-gradient(circle at 88% 8%, rgba(255,59,92,0.28), transparent 46%),
        radial-gradient(circle at 50% 120%, rgba(255,213,0,0.20), transparent 52%),
        linear-gradient(135deg, #14142B 0%, #1D1D3E 48%, #2A1640 100%);
      color: #fff; padding: 88px 0 96px;
    }
    .hero-deco {
      position: absolute; border-radius: 50%; filter: blur(2px); opacity: .5;
      pointer-events: none; animation: floatY 9s ease-in-out infinite;
    }
    .deco-1 { width: 220px; height: 220px; top: -60px; right: 8%; background: linear-gradient(135deg, var(--c-primary), transparent); }
    .deco-2 { width: 130px; height: 130px; bottom: 10%; left: -40px; background: linear-gradient(135deg, var(--c-secondary), transparent); animation-delay: 1.5s; }
    .deco-3 { width: 64px; height: 64px; top: 32%; left: 18%; border: 2px solid var(--c-accent); background: transparent; opacity:.6; animation-delay: .8s; }
    @keyframes floatY { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-18px);} }
    .hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; position: relative; z-index: 2; }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px; font-size: 13px;
      padding: 6px 16px; border-radius: 999px; font-weight: 600;
      background: rgba(255,213,0,0.14); color: var(--c-accent);
      border: 1px solid rgba(255,213,0,0.4); margin-bottom: 22px;
    }
    .hero-badge i { width: 8px; height: 8px; border-radius: 50%; background: var(--c-secondary); display:inline-block; animation: pulse 1.6s infinite; }
    @keyframes pulse { 0%,100%{ box-shadow:0 0 0 0 rgba(11,211,211,.6);} 50%{ box-shadow:0 0 0 6px rgba(11,211,211,0);} }
    .hero h1 { font-size: 46px; line-height: 1.22; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 20px; }
    .hero h1 em { font-style: normal; color: var(--c-primary); }
    .hero h1 span.grad {
      background: linear-gradient(90deg, var(--c-secondary), var(--c-accent));
      -webkit-background-clip: text; background-clip: text; color: transparent;
    }
    .hero .lead { font-size: 16.5px; color: rgba(255,255,255,0.82); max-width: 560px; margin-bottom: 30px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      font-size: 15px; font-weight: 700; padding: 14px 30px; border-radius: 999px;
      transition: .28s; cursor: pointer; border: none; font-family: inherit;
    }
    .btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 10px 28px rgba(255,59,92,0.45); }
    .btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-3px); box-shadow: 0 16px 34px rgba(255,59,92,0.55); }
    .btn-ghost { background: rgba(255,255,255,0.07); color: #fff; border: 1px solid rgba(255,255,255,0.32); }
    .btn-ghost:hover { background: rgba(255,255,255,0.16); transform: translateY(-3px); }
    .btn-secondary { background: var(--c-secondary); color: #06282B; box-shadow: 0 10px 26px rgba(11,211,211,0.45); }
    .btn-secondary:hover { transform: translateY(-3px); filter: brightness(1.05); }
    .hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
    .hero-tags span {
      font-size: 12.5px; padding: 5px 13px; border-radius: 8px;
      background: rgba(255,255,255,0.07); color: rgba(255,255,255,0.78);
      border: 1px solid rgba(255,255,255,0.12);
    }
    /* Hero 右侧数据卡片 */
    .hero-panel {
      display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
      background: rgba(255,255,255,0.05); padding: 22px; border-radius: 22px;
      border: 1px solid rgba(255,255,255,0.12); backdrop-filter: blur(6px);
    }
    .stat-card {
      background: rgba(255,255,255,0.06); border-radius: 14px; padding: 18px 16px;
      border: 1px solid rgba(255,255,255,0.1); transition: .3s;
    }
    .stat-card:hover { transform: translateY(-4px); background: rgba(255,59,92,0.16); border-color: rgba(255,59,92,0.4); }
    .stat-num { font-size: 30px; font-weight: 800; color: #fff; line-height: 1.1; }
    .stat-num small { font-size: 14px; color: var(--c-secondary); font-weight: 700; }
    .stat-label { font-size: 12.5px; color: rgba(255,255,255,0.68); margin-top: 6px; }

    /* ===== 通用区块 ===== */
    .section { padding: 84px 0; }
    .section.alt { background: #fff; }
    .section.deep { background: var(--c-deep); color: #fff; }
    .sec-head { text-align: center; max-width: 780px; margin: 0 auto 52px; }
    .sec-eyebrow {
      display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
      color: var(--c-primary); text-transform: uppercase; margin-bottom: 12px;
      padding: 4px 14px; background: rgba(255,59,92,0.08); border-radius: 999px;
    }
    .section.deep .sec-eyebrow { color: var(--c-secondary); background: rgba(11,211,211,0.12); }
    .sec-head h2 { font-size: 34px; font-weight: 800; letter-spacing: -0.4px; margin-bottom: 14px; }
    .sec-head p { font-size: 15.5px; color: var(--c-muted); }
    .section.deep .sec-head p { color: rgba(255,255,255,0.7); }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }

    /* ===== 卡片 ===== */
    .card {
      background: var(--c-card); border-radius: var(--radius); padding: 28px;
      border: 1px solid var(--c-line); box-shadow: var(--shadow-sm);
      transition: transform .3s, box-shadow .3s, border-color .3s;
    }
    .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(255,59,92,0.35); }
    .card-icon {
      width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
      font-size: 24px; margin-bottom: 18px; color: #fff;
      background: linear-gradient(135deg, var(--c-primary), #FF7A5C);
      box-shadow: 0 8px 18px rgba(255,59,92,0.3);
    }
    .card-icon.cyan { background: linear-gradient(135deg, var(--c-secondary), #2B7BFF); box-shadow: 0 8px 18px rgba(11,211,211,0.3); }
    .card-icon.yellow { background: linear-gradient(135deg, var(--c-accent), #FF9E3B); box-shadow: 0 8px 18px rgba(255,213,0,0.32); color: #3A2A00; }
    .card h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 10px; }
    .card p { font-size: 14px; color: var(--c-muted); }
    .card .mini-list { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
    .card .mini-list span { font-size: 12px; padding: 3px 10px; background: var(--c-bg); border-radius: 6px; color: var(--c-muted); }

    /* ===== 关于我们 ===== */
    .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
    .about-media {
      border-radius: 20px; overflow: hidden; box-shadow: var(--shadow-md);
      border: 6px solid #fff;
    }
    .about-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16/11; }
    .about-text h2 { font-size: 31px; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.3px; }
    .about-text h2 span { color: var(--c-primary); }
    .about-text p { font-size: 15px; color: var(--c-muted); margin-bottom: 16px; }
    .about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; }
    .about-feature {
      display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px;
      background: #fff; border-radius: 12px; border: 1px solid var(--c-line);
      transition: .3s;
    }
    .about-feature:hover { border-color: var(--c-secondary); transform: translateX(4px); }
    .about-feature .dot {
      width: 26px; height: 26px; flex: 0 0 26px; border-radius: 8px; background: rgba(11,211,211,0.14);
      color: var(--c-secondary); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 14px;
    }
    .about-feature b { display: block; font-size: 14.5px; margin-bottom: 2px; }
    .about-feature small { font-size: 12.5px; color: var(--c-muted); }

    /* ===== 服务能力卡片 ===== */
    .service-tabs { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
    .service-tabs button {
      padding: 10px 22px; border-radius: 999px; border: 1px solid var(--c-line);
      background: #fff; font-size: 14px; font-weight: 600; cursor: pointer; color: var(--c-muted);
      transition: .25s; font-family: inherit;
    }
    .service-tabs button.active, .service-tabs button:hover {
      background: var(--c-primary); border-color: var(--c-primary); color: #fff;
      box-shadow: 0 8px 20px rgba(255,59,92,0.32);
    }
    .service-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

    /* ===== 数据指标 ===== */
    .metrics-band {
      background: linear-gradient(120deg, var(--c-deep), #2A1640);
      color: #fff; border-radius: 24px; padding: 52px 40px; position: relative; overflow: hidden;
    }
    .metrics-band::before {
      content: ''; position: absolute; width: 320px; height: 320px; border-radius: 50%;
      background: radial-gradient(circle, rgba(255,59,92,0.35), transparent 70%);
      top: -120px; right: -60px;
    }
    .metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; position: relative; z-index: 2; text-align: center; }
    .metric-num { font-size: 40px; font-weight: 800; color: #fff; line-height: 1.1; }
    .metric-num small { font-size: 16px; color: var(--c-accent); font-weight: 700; }
    .metric-label { font-size: 13.5px; color: rgba(255,255,255,0.7); margin-top: 8px; }

    /* ===== 流程步骤 ===== */
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; position: relative; }
    .step {
      background: #fff; border-radius: var(--radius); padding: 30px 24px;
      border: 1px solid var(--c-line); position: relative; transition: .3s;
    }
    .step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--c-secondary); }
    .step-num {
      font-size: 44px; font-weight: 800; line-height: 1;
      background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
      -webkit-background-clip: text; background-clip: text; color: transparent;
      margin-bottom: 14px; display: block;
    }
    .step h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
    .step p { font-size: 13.5px; color: var(--c-muted); }
    .step::after {
      content: ''; position: absolute; top: 50%; right: -14px; width: 8px; height: 8px; border-radius: 50%;
      background: var(--c-primary); transform: translateY(-50%);
    }
    .step:last-child::after { display: none; }

    /* ===== 对比表格 ===== */
    .compare-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--c-line); background: #fff; }
    table.compare { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 14.5px; }
    table.compare th, table.compare td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--c-line); }
    table.compare thead th { background: var(--c-deep); color: #fff; font-weight: 700; font-size: 14px; }
    table.compare thead th:nth-child(2) { background: var(--c-primary); text-align: center; }
    table.compare tbody td:nth-child(2) { background: rgba(255,59,92,0.05); text-align: center; font-weight: 700; color: var(--c-primary); }
    table.compare tbody tr:hover { background: rgba(11,211,211,0.06); }
    .rating-stars { color: var(--c-accent); letter-spacing: 2px; font-size: 16px; }
    .score-badge {
      display: inline-flex; align-items: baseline; gap: 2px; font-weight: 800;
      font-size: 20px; color: var(--c-primary);
    }
    .score-badge small { font-size: 12px; color: var(--c-muted); font-weight: 500; }

    /* ===== 案例展示 ===== */
    .cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .case-card {
      border-radius: var(--radius); overflow: hidden; background: #fff;
      border: 1px solid var(--c-line); box-shadow: var(--shadow-sm); transition: .3s;
    }
    .case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
    .case-thumb { position: relative; overflow: hidden; aspect-ratio: 16/10; background: var(--c-deep); }
    .case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
    .case-card:hover .case-thumb img { transform: scale(1.06); }
    .case-thumb .tag {
      position: absolute; top: 14px; left: 14px; background: var(--c-primary); color: #fff;
      font-size: 12px; padding: 4px 12px; border-radius: 999px; font-weight: 600;
    }
    .case-thumb.portrait { aspect-ratio: 1/1; }
    .case-body { padding: 22px; }
    .case-body h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
    .case-body p { font-size: 13.5px; color: var(--c-muted); }
    .case-body .case-meta { margin-top: 14px; display: flex; gap: 16px; font-size: 12.5px; color: var(--c-secondary); font-weight: 600; }

    /* ===== 用户评论 ===== */
    .reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .review-card {
      background: #fff; border-radius: var(--radius); padding: 26px;
      border: 1px solid var(--c-line); box-shadow: var(--shadow-sm); transition: .3s;
      display: flex; flex-direction: column;
    }
    .review-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
    .review-top { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
    .avatar {
      width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
      font-weight: 800; color: #fff; font-size: 17px; background: linear-gradient(135deg, var(--c-primary), #FF7A5C);
    }
    .avatar.c2 { background: linear-gradient(135deg, var(--c-secondary), #2B7BFF); }
    .avatar.c3 { background: linear-gradient(135deg, var(--c-accent), #FF9E3B); color: #3A2A00; }
    .avatar.c4 { background: linear-gradient(135deg, #8E5BFF, #B57AFF); }
    .avatar.c5 { background: linear-gradient(135deg, #17C964, #58E08E); }
    .avatar.c6 { background: linear-gradient(135deg, #FF3B5C, #FFD500); }
    .review-user b { display: block; font-size: 14.5px; }
    .review-user small { font-size: 12.5px; color: var(--c-muted); }
    .review-stars { color: var(--c-accent); font-size: 13px; margin-left: auto; letter-spacing: 1px; }
    .review-card p { font-size: 14px; color: #4A4A5E; }

    /* ===== 标签云 ===== */
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
    .tag-cloud span {
      font-size: 13px; padding: 7px 16px; border-radius: 999px; background: #fff;
      border: 1px solid var(--c-line); color: var(--c-muted); transition: .25s; cursor: default;
    }
    .tag-cloud span:hover { border-color: var(--c-primary); color: var(--c-primary); transform: translateY(-3px); background: rgba(255,59,92,0.05); }

    /* ===== 价格/时间线/服务网络 ===== */
    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .price-card {
      background: #fff; border-radius: var(--radius); padding: 32px 28px; border: 1px solid var(--c-line);
      position: relative; transition: .3s;
    }
    .price-card.featured { border: 2px solid var(--c-primary); box-shadow: var(--shadow-lg); transform: scale(1.02); }
    .price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
    .price-card .plan-name { font-size: 16px; font-weight: 700; color: var(--c-muted); }
    .price-card .plan-price { font-size: 38px; font-weight: 800; margin: 10px 0 4px; color: var(--c-deep); }
    .price-card .plan-price small { font-size: 14px; color: var(--c-muted); font-weight: 500; }
    .price-card ul { margin: 20px 0 26px; }
    .price-card li { font-size: 14px; color: var(--c-muted); padding: 7px 0 7px 26px; position: relative; }
    .price-card li::before { content: '✓'; position: absolute; left: 0; color: var(--c-secondary); font-weight: 800; }
    .price-badge {
      position: absolute; top: -13px; right: 22px; background: var(--c-primary); color: #fff;
      font-size: 12px; padding: 4px 14px; border-radius: 999px; font-weight: 700;
    }

    .timeline { position: relative; padding-left: 30px; }
    .timeline::before {
      content: ''; position: absolute; left: 8px; top: 4px; bottom: 4px; width: 2px;
      background: linear-gradient(var(--c-primary), var(--c-secondary));
    }
    .timeline-item { position: relative; padding-bottom: 26px; }
    .timeline-item:last-child { padding-bottom: 0; }
    .timeline-item::before {
      content: ''; position: absolute; left: -30px; top: 6px; width: 14px; height: 14px; border-radius: 50%;
      background: #fff; border: 3px solid var(--c-primary); box-shadow: 0 0 0 3px rgba(255,59,92,0.15);
    }
    .timeline-item h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 4px; }
    .timeline-item p { font-size: 13.5px; color: var(--c-muted); }

    /* ===== 服务网络 ===== */
    .network-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .network-item {
      background: #fff; border-radius: 14px; padding: 22px 18px; text-align: center;
      border: 1px solid var(--c-line); transition: .3s;
    }
    .network-item:hover { border-color: var(--c-secondary); transform: translateY(-4px); box-shadow: var(--shadow-sm); }
    .network-item .city { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
    .network-item small { font-size: 12.5px; color: var(--c-muted); }

    /* ===== 文章列表 ===== */
    .article-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .article-card {
      background: #fff; border-radius: var(--radius); padding: 26px; border: 1px solid var(--c-line);
      transition: .3s; display: flex; flex-direction: column;
    }
    .article-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(255,59,92,0.3); }
    .article-card .cat { font-size: 12px; color: var(--c-primary); font-weight: 700; letter-spacing: 1px; margin-bottom: 10px; }
    .article-card h4 { font-size: 16.5px; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
    .article-card p { font-size: 13.5px; color: var(--c-muted); margin-bottom: 16px; flex: 1; }
    .article-card .read { font-size: 13.5px; font-weight: 700; color: var(--c-secondary); }

    /* ===== FAQ ===== */
    .faq-list { max-width: 900px; margin: 0 auto; }
    .faq-item {
      background: #fff; border: 1px solid var(--c-line); border-radius: 14px; margin-bottom: 14px;
      overflow: hidden; transition: .3s;
    }
    .faq-item:hover { border-color: rgba(255,59,92,0.4); }
    .faq-q {
      width: 100%; text-align: left; padding: 20px 24px; background: none; border: none; cursor: pointer;
      font-size: 16px; font-weight: 700; font-family: inherit; color: var(--c-text);
      display: flex; justify-content: space-between; align-items: center; gap: 16px;
    }
    .faq-q .ico { transition: transform .3s; font-size: 20px; color: var(--c-primary); flex: 0 0 auto; }
    .faq-item.open .faq-q .ico { transform: rotate(45deg); }
    .faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
    .faq-a p { padding: 0 24px 22px; font-size: 14.5px; color: var(--c-muted); }

    /* ===== 表单 ===== */
    .form-section { display: grid; grid-template-columns: 1fr 1.1fr; gap: 44px; align-items: start; }
    .form-info h2 { font-size: 32px; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.3px; }
    .form-info > p { font-size: 15px; color: var(--c-muted); margin-bottom: 26px; }
    .contact-list { display: flex; flex-direction: column; gap: 14px; }
    .contact-item {
      display: flex; align-items: center; gap: 14px; background: #fff; padding: 16px 18px;
      border-radius: 12px; border: 1px solid var(--c-line); transition: .3s;
    }
    .contact-item:hover { border-color: var(--c-secondary); transform: translateX(4px); }
    .contact-item .ci-icon {
      width: 42px; height: 42px; flex: 0 0 42px; border-radius: 10px; background: rgba(255,59,92,0.1);
      color: var(--c-primary); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700;
    }
    .contact-item b { display: block; font-size: 14px; }
    .contact-item small { font-size: 13px; color: var(--c-muted); word-break: break-all; }
    .form-card {
      background: #fff; border-radius: 20px; padding: 36px; border: 1px solid var(--c-line);
      box-shadow: var(--shadow-md);
    }
    .form-card h3 { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
    .form-card .sub { font-size: 13.5px; color: var(--c-muted); margin-bottom: 24px; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .field { margin-bottom: 16px; }
    .field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 7px; color: var(--c-text); }
    .field label i { color: var(--c-primary); font-style: normal; }
    .field input, .field select, .field textarea {
      width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--c-line);
      font-size: 14px; font-family: inherit; color: var(--c-text); background: var(--c-bg);
      transition: .25s; outline: none;
    }
    .field input:focus, .field select:focus, .field textarea:focus {
      border-color: var(--c-primary); background: #fff; box-shadow: 0 0 0 3px rgba(255,59,92,0.12);
    }
    .field textarea { resize: vertical; min-height: 100px; }
    .form-card .btn { width: 100%; margin-top: 6px; }

    /* ===== 加盟代理 ===== */
    .join-banner {
      background: linear-gradient(120deg, #FF3B5C 0%, #FF6A3D 55%, #FFD500 130%);
      border-radius: 24px; padding: 54px 48px; color: #fff; position: relative; overflow: hidden;
    }
    .join-banner::after {
      content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%;
      background: rgba(255,255,255,0.16); right: -80px; bottom: -120px;
    }
    .join-banner h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; position: relative; z-index: 2; }
    .join-banner p { font-size: 15.5px; max-width: 680px; opacity: .95; margin-bottom: 26px; position: relative; z-index: 2; }
    .join-points { display: flex; flex-wrap: wrap; gap: 12px; position: relative; z-index: 2; margin-bottom: 28px; }
    .join-points span {
      background: rgba(255,255,255,0.22); padding: 8px 18px; border-radius: 999px;
      font-size: 13.5px; font-weight: 600; backdrop-filter: blur(4px);
    }
    .join-banner .btn { position: relative; z-index: 2; background: #fff; color: var(--c-primary); box-shadow: 0 10px 28px rgba(0,0,0,0.16); }
    .join-banner .btn:hover { transform: translateY(-3px); background: #181830; color: #fff; }

    /* ===== 页脚 ===== */
    .site-footer { background: var(--c-deep); color: rgba(255,255,255,0.72); padding: 64px 0 0; }
    .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 46px; border-bottom: 1px solid rgba(255,255,255,0.1); }
    .footer-brand .brand { margin-bottom: 16px; }
    .footer-brand p { font-size: 13.5px; line-height: 1.8; margin-bottom: 16px; max-width: 320px; }
    .footer-qr { display: flex; align-items: center; gap: 12px; }
    .footer-qr img { width: 78px; height: 78px; border-radius: 10px; border: 2px solid rgba(255,255,255,0.2); object-fit: cover; }
    .footer-qr small { font-size: 12.5px; line-height: 1.7; }
    .footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul a { font-size: 13.5px; color: rgba(255,255,255,0.68); transition: .25s; }
    .footer-col ul a:hover { color: var(--c-secondary); padding-left: 4px; }
    .footer-col p { font-size: 13.5px; margin-bottom: 10px; }
    .footer-col p a { color: rgba(255,255,255,0.68); }
    .footer-col p a:hover { color: var(--c-secondary); }
    .footer-bottom { padding: 22px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,0.5); }
    .footer-bottom a { color: rgba(255,255,255,0.68); }
    .footer-bottom a:hover { color: var(--c-secondary); }

    /* ===== 浮动客服 & 返回顶部 ===== */
    .float-cs {
      position: fixed; right: 22px; bottom: 96px; z-index: 90;
      width: 58px; height: 58px; border-radius: 50%; background: var(--c-primary);
      display: flex; align-items: center; justify-content: center; cursor: pointer;
      box-shadow: 0 10px 26px rgba(255,59,92,0.5); transition: .3s; border: none;
    }
    .float-cs:hover { transform: scale(1.08); }
    .float-cs svg { width: 26px; height: 26px; fill: #fff; }
    .float-cs .cs-pop {
      position: absolute; right: 72px; bottom: 0; background: #fff; border-radius: 14px;
      padding: 16px; box-shadow: var(--shadow-md); width: 208px; text-align: center;
      opacity: 0; visibility: hidden; transform: translateX(10px); transition: .3s;
      border: 1px solid var(--c-line);
    }
    .float-cs:hover .cs-pop, .float-cs.active .cs-pop { opacity: 1; visibility: visible; transform: translateX(0); }
    .cs-pop img { width: 100%; border-radius: 8px; margin-bottom: 8px; }
    .cs-pop p { font-size: 12.5px; color: var(--c-muted); line-height: 1.6; }
    .cs-pop b { color: var(--c-text); font-size: 13px; display: block; margin-bottom: 4px; }
    .back-top {
      position: fixed; right: 22px; bottom: 26px; z-index: 90;
      width: 44px; height: 44px; border-radius: 50%; background: var(--c-deep); color: #fff;
      display: flex; align-items: center; justify-content: center; cursor: pointer;
      box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transition: .3s;
      border: 1px solid rgba(255,255,255,0.15); font-size: 18px;
    }
    .back-top.show { opacity: 1; visibility: visible; }
    .back-top:hover { background: var(--c-primary); transform: translateY(-4px); }

    /* ===== 滚动渐入 ===== */
    .reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
    .reveal.in { opacity: 1; transform: translateY(0); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .hero h1 { font-size: 38px; }
      .hero-grid { grid-template-columns: 1fr; gap: 40px; }
      .hero-panel { max-width: 520px; }
      .grid-4, .steps, .network-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-3, .service-list, .cases-grid, .reviews-grid, .price-grid, .article-list { grid-template-columns: repeat(2, 1fr); }
      .about-grid, .form-section { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .step::after { display: none; }
    }
    @media (max-width: 768px) {
      .nav-links {
        position: fixed; top: 68px; left: 0; right: 0; background: var(--c-deep);
        flex-direction: column; align-items: stretch; padding: 14px 20px 22px;
        gap: 2px; transform: translateY(-120%); transition: transform .35s ease;
        box-shadow: 0 20px 40px rgba(0,0,0,0.3); border-bottom: 1px solid rgba(255,255,255,0.1);
        max-height: calc(100vh - 68px); overflow-y: auto;
      }
      .nav-links.open { transform: translateY(0); }
      .nav-links a { padding: 12px 14px; border-radius: 8px; }
      .nav-cta { text-align: center; margin-top: 8px; }
      .menu-toggle { display: flex; }
      .section { padding: 60px 0; }
      .sec-head { margin-bottom: 36px; }
      .sec-head h2 { font-size: 26px; }
      .hero { padding: 60px 0 70px; }
      .hero h1 { font-size: 30px; }
      .hero .lead { font-size: 15px; }
      .hero-panel { grid-template-columns: 1fr 1fr; padding: 16px; gap: 12px; }
      .stat-num { font-size: 24px; }
      .metrics-band { padding: 36px 22px; }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; }
      .metric-num { font-size: 30px; }
      .grid-4, .grid-3, .grid-2, .service-list, .cases-grid, .reviews-grid, .price-grid, .article-list,
      .steps, .network-grid, .about-features, .form-row, .footer-grid { grid-template-columns: 1fr; }
      .price-card.featured { transform: none; }
      .join-banner { padding: 38px 26px; }
      .join-banner h2 { font-size: 24px; }
      .form-card { padding: 26px 20px; }
      .service-tabs button { padding: 8px 16px; font-size: 13px; }
      .float-cs { right: 16px; bottom: 84px; width: 52px; height: 52px; }
      .back-top { right: 16px; bottom: 22px; }
      .float-cs .cs-pop { right: 0; bottom: 66px; }
      table.compare { font-size: 13px; min-width: 560px; }
    }
    @media (max-width: 480px) {
      .hero h1 { font-size: 25px; }
      .hero-actions .btn { width: 100%; }
      .brand-text { font-size: 16px; }
    }