:root{
      --bg:#f5f7fb;
      --bg2:#eef2ff;
      --card:#ffffff;
      --card2:#f8fbff;
      --text:#162033;
      --muted:#5c6b84;
      --line:#dbe4f1;
      --accent:#6d5efc;
      --accent2:#1ec8ff;
      --accent3:#ff7ab6;
      --shadow:0 18px 40px rgba(20,33,61,.08);
      --shadow2:0 10px 22px rgba(109,94,252,.14);
      --radius:22px;
      --radius2:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(109,94,252,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(30,200,255,.10), transparent 26%),
        linear-gradient(180deg,#f8fbff 0%, #f5f7fb 22%, #f5f7fb 100%);
      line-height:1.65;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .site-header{
      position:sticky;top:0;z-index:60;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(245,247,251,.84);
      border-bottom:1px solid rgba(219,228,241,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:72px;
    }
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand strong{font-size:18px;letter-spacing:.5px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .nav-links a{color:var(--muted);font-size:14px;font-weight:600}
    .nav-links a:hover{color:var(--accent)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;
      padding:12px 18px;font-weight:700;font-size:14px;
      transition:.25s ease;
      cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--accent),#8b6bff);color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(109,94,252,.25)}
    .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;width:44px;height:44px}
    .menu-toggle span,.menu-toggle span:before,.menu-toggle span:after{
      display:block;content:"";width:18px;height:2px;background:var(--text);margin:0 auto;position:relative;border-radius:2px;
    }
    .menu-toggle span:before,.menu-toggle span:after{position:absolute;left:0}
    .menu-toggle span:before{top:-6px}
    .menu-toggle span:after{top:6px}
    .hero{padding:34px 0 24px}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-card{
      background:
        linear-gradient(135deg, rgba(109,94,252,.95), rgba(30,200,255,.86));
      color:#fff;border-radius:30px;padding:34px;box-shadow:var(--shadow);
      position:relative;overflow:hidden;
      min-height:420px;
    }
    .hero-card:before,.hero-card:after{
      content:"";position:absolute;border-radius:999px;background:rgba(255,255,255,.10);filter:blur(2px)
    }
    .hero-card:before{width:220px;height:220px;right:-70px;top:-60px}
    .hero-card:after{width:160px;height:160px;left:-50px;bottom:-50px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.20);padding:7px 12px;border-radius:999px;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px,5vw,54px);line-height:1.08}
    .hero p{margin:0;color:rgba(255,255,255,.92);font-size:16px;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
    .hero-actions .btn{padding:13px 20px}
    .btn-light{background:#fff;color:var(--accent)}
    .btn-light:hover{transform:translateY(-2px);background:#f7fbff}
    .hero-metrics{
      margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
    }
    .metric{
      background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
      border-radius:20px;padding:16px 14px
    }
    .metric b{display:block;font-size:22px;margin-bottom:4px}
    .metric span{font-size:12px;opacity:.92}
    .hero-side{
      display:grid;gap:16px;
    }
    .hero-side-card{
      background:rgba(255,255,255,.9);
      border:1px solid rgba(219,228,241,.9);
      box-shadow:var(--shadow);
      border-radius:26px;padding:22px;
    }
    .hero-side-card h2,.section-title h2{margin:0 0 10px;font-size:28px;line-height:1.15}
    .hero-side-card p,.section-subtitle{margin:0;color:var(--muted)}
    .pill-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
    .pill{background:#f2f5ff;border:1px solid #e0e7ff;color:#42507a;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:600}
    section{padding:24px 0}
    .section-card{
      background:rgba(255,255,255,.8);
      border:1px solid rgba(219,228,241,.9);
      border-radius:28px;padding:26px;box-shadow:var(--shadow)
    }
    .section-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:18px}
    .section-title p{margin:8px 0 0;color:var(--muted)}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .card{
      background:linear-gradient(180deg,#fff 0%, #fbfcff 100%);
      border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 10px 24px rgba(18,32,54,.05);
      transition:.25s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 32px rgba(18,32,54,.08)}
    .card h3{margin:10px 0 8px;font-size:18px}
    .card p{margin:0;color:var(--muted)}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(109,94,252,.12),rgba(30,200,255,.12));color:var(--accent);
      font-size:20px;font-weight:900
    }
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .stat{background:linear-gradient(180deg,#fff 0%,#f7faff 100%);padding:22px;border-radius:22px;border:1px solid var(--line)}
    .stat b{display:block;font-size:30px;line-height:1;color:var(--accent);margin-bottom:8px}
    .stat span{color:var(--muted);font-size:14px}
    .media-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .media-box{background:#fff;border:1px solid var(--line);border-radius:24px;padding:14px}
    .media-box img{border-radius:18px;width:100%;height:auto}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative;padding:20px;border-radius:22px;background:#fff;border:1px solid var(--line)}
    .step .num{display:inline-flex;width:34px;height:34px;border-radius:999px;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:800}
    .step h3{margin:14px 0 8px;font-size:17px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf2f8;text-align:left;vertical-align:top}
    th{background:#f7faff;color:#1b2740;font-size:14px}
    td{color:#33415d}
    .good{color:#0d8f62;font-weight:700}
    .warn{color:#8f5b0d;font-weight:700}
    .compare-score{
      display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:stretch
    }
    .score-card{
      background:linear-gradient(135deg,#101d3a,#2b3f7b);color:#fff;border-radius:26px;padding:24px;box-shadow:var(--shadow)
    }
    .score-card .big{font-size:52px;font-weight:900;line-height:1;margin:10px 0}
    .faq details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px
    }
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer;font-weight:700;color:var(--text)}
    .faq p{margin:10px 0 0;color:var(--muted)}
    .review{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review .card small{color:#8a93a6}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#f3f6ff;border:1px solid #dfe6ff;color:#43507a;font-size:13px;font-weight:600}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .timeline .card{position:relative}
    .timeline .card:before{
      content:"";position:absolute;left:20px;top:20px;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2))
    }
    .timeline .card{padding-left:36px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;font-weight:700;color:#25324d}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:16px;background:#fff;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:.2s ease;
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(109,94,252,.55);box-shadow:0 0 0 4px rgba(109,94,252,.08)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:16px}
    .footer{
      margin-top:24px;padding:28px 0 34px;background:#0f1730;color:#dbe6ff;border-top:1px solid rgba(255,255,255,.08)
    }
    .footer a{color:#fff}
    .footer .muted{color:#b7c6ea}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer .card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.08);box-shadow:none}
    .footer .tag{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.08);color:#dbe6ff}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:80;display:flex;flex-direction:column;gap:10px
    }
    .floating a,.floating button{
      width:48px;height:48px;border:none;border-radius:16px;box-shadow:var(--shadow2);
      display:grid;place-items:center;background:#fff;color:var(--accent);font-size:18px;cursor:pointer
    }
    .contact-badge{
      position:fixed;left:18px;bottom:18px;z-index:75;background:#fff;border:1px solid var(--line);
      border-radius:18px;padding:10px 14px;box-shadow:var(--shadow);font-size:13px;color:var(--muted)
    }
    .mobile-menu{display:none}
    .scroll-animate{opacity:0;transform:translateY(16px);transition:.55s ease}
    .scroll-animate.in{opacity:1;transform:none}
    .subgrid{display:grid;grid-template-columns:1.15fr .85fr;gap:16px}
    .list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .list li{padding:10px 12px;background:#f8fbff;border:1px solid #e3eaf5;border-radius:14px;color:#31405c}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .articles a{display:block}
    .articles .card h3{font-size:17px}
    .home-link{font-weight:800}
    .kefu img{width:100%;max-width:220px;border-radius:18px;border:1px solid var(--line)}
    @media (max-width: 1024px){
      .hero-grid,.compare-score,.footer-grid,.subgrid,.media-row,.grid-4,.grid-3,.stats,.workflow,.review,.articles,.timeline{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 768px){
      .nav-links,.nav-actions .btn-ghost{display:none}
      .menu-toggle{display:grid;place-items:center}
      .mobile-menu{
        display:none;padding:0 0 18px
      }
      .mobile-menu.open{display:block}
      .mobile-menu a{
        display:block;padding:12px 2px;color:var(--text);border-top:1px solid var(--line)
      }
      .hero-card{padding:24px;min-height:auto}
      .hero-metrics,.stats,.grid-4,.grid-3,.workflow,.compare-score,.review,.articles,.timeline,.media-row,.subgrid,.footer-grid,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:start}
      .contact-badge{display:none}
      .floating{right:12px;bottom:12px}
      .container{padding:0 16px}
      table{min-width:820px}
    }