:root{
      --bg:#f6f7fb;
      --bg-2:#eef3ff;
      --card:#ffffff;
      --card-2:#fbfcff;
      --text:#172033;
      --muted:#5f6b85;
      --line:#dbe3f1;
      --brand:#6a5cff;
      --brand-2:#23c6d6;
      --brand-3:#f45ca8;
      --shadow:0 18px 40px rgba(39,55,101,.10);
      --shadow-soft:0 10px 24px rgba(39,55,101,.08);
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 15% 10%, rgba(106,92,255,.10), transparent 26%),
        radial-gradient(circle at 85% 12%, rgba(35,198,214,.12), transparent 23%),
        linear-gradient(180deg, #f9fbff 0%, var(--bg) 45%, #f5f7fc 100%);
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container)); margin:0 auto}
    .site-header,.site-footer,.section{position:relative}
    .site-header{
      position:sticky;top:0;z-index:80;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(246,247,251,.78);
      border-bottom:1px solid rgba(219,227,241,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:1.02rem;letter-spacing:.5px}
    .brand-text span{display:block;font-size:.84rem;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.25s ease}
    .nav-links a:hover,.nav-links a:focus{color:var(--text);background:rgba(106,92,255,.08)}
    .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;cursor:pointer;
      transition:transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
      box-shadow:0 10px 22px rgba(106,92,255,.14);
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-3)); color:#fff}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line);box-shadow:none}
    .mobile-toggle{display:none}
    .hero{
      padding:34px 0 18px;
    }
    .hero-wrap{
      background:
        linear-gradient(135deg, rgba(255,255,255,.86), rgba(245,248,255,.88)),
        radial-gradient(circle at 15% 15%, rgba(106,92,255,.12), transparent 24%),
        radial-gradient(circle at 85% 18%, rgba(35,198,214,.13), transparent 20%);
      border:1px solid rgba(219,227,241,.9);
      border-radius:28px;
      box-shadow:var(--shadow);
      padding:34px;
      overflow:hidden;
    }
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:start}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:rgba(106,92,255,.08);color:#4d44cf;font-weight:700;font-size:.92rem;
    }
    h1{margin:.7rem 0 1rem;font-size:clamp(2rem,4vw,3.6rem);line-height:1.12;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:1.04rem;max-width:62ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px}
    .point{
      background:rgba(255,255,255,.82);border:1px solid rgba(219,227,241,.9);
      border-radius:18px;padding:14px 14px 13px;
    }
    .point strong{display:block;font-size:1.05rem}
    .point span{display:block;color:var(--muted);font-size:.92rem;margin-top:2px}
    .hero-panel{
      background:linear-gradient(180deg, rgba(255,255,255,.9), rgba(250,251,255,.82));
      border:1px solid rgba(219,227,241,.9);
      border-radius:24px;padding:22px;
      box-shadow:var(--shadow-soft);
    }
    .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .stat{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f7f9ff);
      border:1px solid var(--line);
    }
    .stat b{display:block;font-size:1.35rem}
    .stat small{color:var(--muted)}
    .hero-note{
      margin-top:14px;padding:15px 16px;border-radius:18px;background:linear-gradient(135deg, rgba(106,92,255,.09), rgba(35,198,214,.09));
      color:#24314f
    }
    .section{padding:20px 0}
    .section-head{
      display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:16px
    }
    .section-head h2{margin:0;font-size:clamp(1.4rem,2vw,2rem)}
    .section-head p{margin:0;color:var(--muted);max-width:68ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .card{
      background:var(--card);
      border:1px solid rgba(219,227,241,.95);
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
      padding:20px;
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px;font-size:1.08rem}
    .card p{margin:0;color:var(--muted)}
    .metric{padding:22px}
    .metric .num{font-size:2rem;font-weight:800;line-height:1;color:#1d2740}
    .metric .sub{margin-top:8px;color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#35425f;font-size:.92rem}
    .service-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .service{
      padding:18px;border-radius:22px;background:linear-gradient(180deg,#fff, #f8fbff);
      border:1px solid var(--line)
    }
    .service h3{margin-bottom:8px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative;padding-top:28px}
    .step::before{
      content:attr(data-step);position:absolute;top:0;left:18px;
      width:40px;height:40px;border-radius:50%;
      display:grid;place-items:center;color:#fff;font-weight:800;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 10px 20px rgba(106,92,255,.18);
    }
    .step .card{padding-top:24px;height:100%}
    .compare{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-soft)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f7f9ff;color:#24314f}
    tr:last-child td{border-bottom:none}
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;
      background:rgba(35,198,214,.12);color:#0f6e79;font-weight:700;font-size:.9rem
    }
    .comparison-card{background:linear-gradient(180deg,#fff,#f7faff);border:1px solid var(--line);border-radius:22px;padding:20px}
    .score{
      display:flex;align-items:center;gap:14px;flex-wrap:wrap;
      padding:18px;border-radius:18px;background:linear-gradient(135deg, rgba(106,92,255,.08), rgba(245,92,168,.08));
      margin-top:14px
    }
    .score strong{font-size:1.8rem}
    .faq details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow-soft)
    }
    .faq summary{cursor:pointer;font-weight:700;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:12px 0 0;color:var(--muted)}
    .review{display:flex;flex-direction:column;gap:10px;height:100%}
    .review .who{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .stars{color:#ffb400;font-size:1.05rem;letter-spacing:1px}
    .timeline{display:grid;gap:12px}
    .timeline-item{
      display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:start;
      padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .timeline-item strong{display:block;color:#24314f}
    .timeline-item span{color:var(--muted)}
    .form{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-weight:700;color:#24314f}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;
      padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:border-color .2s, box-shadow .2s
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(106,92,255,.6);box-shadow:0 0 0 4px rgba(106,92,255,.12)}
    textarea{min-height:132px;resize:vertical}
    .submit-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer{
      padding:18px 0 24px;margin-top:10px;
      border-top:1px solid rgba(219,227,241,.95);
      background:linear-gradient(180deg, rgba(247,249,255,.82), rgba(241,245,252,.95));
      color:var(--text)
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .footer p,.footer a{color:var(--muted)}
    .footer .brand-text span{color:var(--muted)}
    .mini{font-size:.92rem;color:var(--muted)}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:90;display:flex;flex-direction:column;gap:10px
    }
    .float-tools a,.float-tools button{
      width:48px;height:48px;border-radius:50%;
      display:grid;place-items:center;border:1px solid var(--line);
      background:#fff;color:var(--text);box-shadow:var(--shadow-soft);cursor:pointer
    }
    .kefu{
      position:fixed;left:16px;bottom:16px;z-index:90;max-width:310px;
      background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);
      overflow:hidden
    }
    .kefu-header{padding:14px 16px;background:linear-gradient(135deg, rgba(106,92,255,.1), rgba(35,198,214,.1));font-weight:800}
    .kefu-body{padding:14px 16px;display:grid;gap:10px}
    .kefu-body img{width:130px;height:130px;object-fit:cover;border-radius:14px;border:1px solid var(--line)}
    .menu-panel{display:none}
    .section-soft{
      background:linear-gradient(180deg, rgba(255,255,255,.58), rgba(249,251,255,.8));
      border-top:1px solid rgba(219,227,241,.55);
      border-bottom:1px solid rgba(219,227,241,.55)
    }
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .article-list a{display:block}
    .article-card h3{margin-bottom:8px}
    .article-card .meta{font-size:.92rem;color:var(--muted);margin-top:12px}
    .highlight{
      background:linear-gradient(135deg, rgba(106,92,255,.08), rgba(35,198,214,.08));
      border:1px solid rgba(106,92,255,.12)
    }
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .7s ease, transform .7s ease}
    .reveal.in-view{opacity:1;transform:none}
    .mono{font-variant-numeric:tabular-nums}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.steps,.article-list{grid-template-columns:1fr 1fr}
      .grid-3,.footer-grid{grid-template-columns:1fr}
      .service-list,.grid-2{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-links{display:none}
      .mobile-toggle{display:inline-flex}
      .hero-wrap{padding:22px}
      .hero-grid,.grid-4,.steps,.article-list,.form,.hero-points{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .timeline-item{grid-template-columns:1fr}
      .kefu{left:12px;right:12px;bottom:76px;max-width:none}
      .kefu-body{grid-template-columns:1fr auto;align-items:center}
      .kefu-body img{width:92px;height:92px}
      .menu-panel{
        display:none;padding:14px 0 18px
      }
      .menu-panel.open{display:block}
      .menu-panel .nav-links{
        display:grid;grid-template-columns:1fr 1fr;gap:8px;justify-content:stretch
      }
      .menu-panel .nav-links a{background:#fff;border:1px solid var(--line);text-align:center}
      .nav-actions .btn-secondary{display:none}
      .float-tools{right:12px}
    }