:root{
      --bg:#f5fbfb;
      --bg2:#eef8f7;
      --card:#ffffff;
      --line:#dbe9e8;
      --text:#15323a;
      --muted:#5d7277;
      --brand:#0b7a78;
      --brand2:#12b3a8;
      --accent:#19c1d3;
      --warm:#ecfffb;
      --shadow:0 18px 40px rgba(16, 70, 78, .10);
      --shadow2:0 10px 24px rgba(16, 70, 78, .08);
      --radius:22px;
      --radius2:16px;
      --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 top left, rgba(25,193,211,.12), transparent 26%),
        radial-gradient(circle at top right, rgba(18,179,168,.10), transparent 24%),
        linear-gradient(180deg, var(--bg), #ffffff 38%, var(--bg2));
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:var(--brand);text-decoration:none}
    a:hover{color:#085b5a}
    img{max-width:100%;display:block}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky; top:0; z-index:20;
      backdrop-filter:saturate(180%) blur(16px);
      background:rgba(245,251,251,.84);
      border-bottom:1px solid rgba(219,233,232,.9);
    }
    .topbar{
      display:flex; align-items:center; justify-content:space-between; gap:16px;
      padding:14px 0;
    }
    .brand{display:flex; align-items:center; gap:12px; min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:var(--shadow2)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:1.02rem;letter-spacing:.5px}
    .brand-text span{display:block;font-size:.85rem;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:14px;padding:10px 12px}
    nav{display:flex;align-items:center;gap:16px}
    .nav-links{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
    .nav-links a{
      padding:8px 10px;border-radius:999px;color:var(--text);font-size:.92rem;
    }
    .nav-links a:hover{background:rgba(18,179,168,.10);color:var(--brand)}
    .nav-cta{
      display:inline-flex;align-items:center;gap:8px;
      padding:10px 14px;border-radius:999px;background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:#fff;font-weight:700;box-shadow:0 10px 18px rgba(11,122,120,.18)
    }
    .nav-cta:hover{color:#fff;transform:translateY(-1px)}
    main{display:block}
    .hero{
      padding:34px 0 22px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-copy,.hero-panel,.card,.feature,.review,.faq-item,.form-card,.compare,.article-item,.timeline-item,.price-box,.network-box{
      background:rgba(255,255,255,.92);border:1px solid rgba(219,233,232,.95);border-radius:var(--radius);box-shadow:var(--shadow2)
    }
    .hero-copy{padding:30px;position:relative;overflow:hidden}
    .hero-copy::before,.hero-panel::before{
      content:"";position:absolute;inset:auto -40px -50px auto;width:180px;height:180px;border-radius:50%;
      background:radial-gradient(circle, rgba(25,193,211,.18), transparent 60%);
      pointer-events:none;
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);background:rgba(18,179,168,.08);border:1px solid rgba(18,179,168,.16);padding:7px 12px;border-radius:999px;font-size:.88rem;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(2rem, 3.8vw, 3.5rem);line-height:1.15;letter-spacing:-.02em}
    .hero-copy p{margin:0;color:var(--muted);font-size:1.02rem;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.22s ease;
      cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 24px rgba(11,122,120,.18)}
    .btn-primary:hover{transform:translateY(-2px);color:#fff}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-secondary:hover{transform:translateY(-2px);border-color:rgba(18,179,168,.35);color:var(--brand)}
    .hero-panel{padding:22px;display:grid;gap:16px;position:relative;overflow:hidden}
    .hero-kpis{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .kpi{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff, #f7fbfb);border:1px solid var(--line)}
    .kpi strong{display:block;font-size:1.4rem;color:var(--brand)}
    .kpi span{display:block;color:var(--muted);font-size:.9rem}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px}
    .badge{padding:8px 12px;border-radius:999px;background:rgba(25,193,211,.10);border:1px solid rgba(25,193,211,.18);font-size:.88rem;color:#105b65}
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:clamp(1.4rem,2.4vw,2rem)}
    .section-head p{margin:0;color:var(--muted);max-width:70ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .feature,.review,.article-item,.compare,.price-box,.network-box,.timeline-item{padding:18px}
    .feature h3,.review h3,.article-item h3,.compare h3,.price-box h3,.network-box h3,.timeline-item h3{margin:0 0 8px;font-size:1.05rem}
    .feature p,.review p,.article-item p,.compare p,.timeline-item p,.price-box p,.network-box p{margin:0;color:var(--muted)}
    .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
    .chip{font-size:.85rem;padding:6px 10px;border-radius:999px;background:#f2fbfb;border:1px solid var(--line);color:#295f66}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .panel{padding:20px}
    .panel ul{margin:12px 0 0;padding-left:18px;color:var(--muted)}
    .panel li{margin:7px 0}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff, #f7fbfb);border:1px solid var(--line);position:relative}
    .step strong{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:50%;background:rgba(18,179,168,.12);color:var(--brand);margin-bottom:10px}
    .table-wrap{overflow-x:auto;border-radius:20px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow2)}
    table{width:100%;border-collapse:collapse;min-width:780px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf2f1;text-align:left;vertical-align:top}
    th{background:#f6fbfb;color:var(--text)}
    tr:last-child td{border-bottom:none}
    .rating{color:#0a746f;font-weight:800}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;border:0;background:transparent;color:var(--text);font-size:1rem;font-weight:700;
      padding:18px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;text-align:left
    }
    .faq-a{max-height:0;overflow:hidden;padding:0 18px;color:var(--muted);transition:max-height .28s ease,padding .28s ease}
    .faq-item.active .faq-a{padding:0 18px 18px;max-height:220px}
    .faq-icon{transition:transform .25s ease}
    .faq-item.active .faq-icon{transform:rotate(45deg)}
    .reviews .review{display:flex;flex-direction:column;gap:10px}
    .review .meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:.92rem}
    .stars{color:#0b7a78;letter-spacing:1px;font-weight:800}
    .articles{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .article-item small{color:var(--muted)}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .form-card{padding:22px}
    form{display:grid;gap:14px}
    .form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    label{display:block;font-size:.92rem;font-weight:700;margin-bottom:6px}
    input,select,textarea{
      width:100%;padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font:inherit;
      outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(18,179,168,.6);box-shadow:0 0 0 4px rgba(18,179,168,.10)}
    textarea{min-height:120px;resize:vertical}
    footer{
      margin-top:18px;padding:22px 0 28px;background:#eef8f7;border-top:1px solid var(--line);color:#17383f
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{color:var(--text);padding:7px 10px;border-radius:999px;background:#fff;border:1px solid var(--line)}
    .footer-links a:hover{color:var(--brand);border-color:rgba(18,179,168,.35)}
    .muted{color:var(--muted)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:30;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:50%;border:0;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;
      box-shadow:0 16px 30px rgba(11,122,120,.22);cursor:pointer
    }
    .float-panel{
      display:none;position:fixed;right:16px;bottom:78px;z-index:31;width:min(320px, calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:16px
    }
    .float-panel.open{display:block}
    .float-panel h3{margin:0 0 8px}
    .float-panel .qr{display:flex;gap:12px;align-items:center}
    .float-panel .qr img{width:96px;height:96px;object-fit:cover;border-radius:14px;border:1px solid var(--line)}
    .scroll-top{position:fixed;right:16px;bottom:132px;z-index:30;display:none}
    .scroll-top.show{display:block}
    .showcase{
      display:grid;grid-template-columns:1fr 1fr;gap:16px
    }
    .show-card{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff, #f8fcfc);border:1px solid var(--line)}
    .gallery{
      display:grid;grid-template-columns:repeat(2,1fr);gap:14px
    }
    .gallery .ai-page-image{width:100%;height:auto;border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow2)}
    .marquee{
      display:flex;flex-wrap:wrap;gap:10px
    }
    .tagcloud{display:flex;flex-wrap:wrap;gap:10px}
    .tagcloud span{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#295f66}
    .networks{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .home-link-wrap{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .home-link-wrap .ai-page-home-link{padding:8px 12px;border-radius:999px;background:rgba(18,179,168,.10);border:1px solid rgba(18,179,168,.18)}
    .section-anchor{scroll-margin-top:92px}
    .service-note{font-size:.92rem;color:var(--muted)}
    .hero-mini{
      display:grid;gap:10px;border-top:1px dashed var(--line);padding-top:14px;margin-top:14px
    }
    .hero-mini .row{display:flex;flex-wrap:wrap;gap:10px}
    @media (max-width: 1024px){
      .hero-grid,.split,.grid-4,.steps,.timeline,.networks,.showcase,.footer-grid{grid-template-columns:1fr}
      .grid-3,.articles{grid-template-columns:repeat(2,1fr)}
      .hero{padding-top:20px}
    }
    @media (max-width: 768px){
      .nav-toggle{display:inline-flex}
      nav{position:absolute;left:0;right:0;top:100%;background:rgba(245,251,251,.98);border-bottom:1px solid var(--line);padding:12px 16px;display:none;flex-direction:column;align-items:stretch}
      nav.open{display:flex}
      .nav-links{flex-direction:column;align-items:stretch}
      .nav-links a{background:#fff;border:1px solid var(--line)}
      .form-row,.grid-3,.articles,.gallery{grid-template-columns:1fr}
      .hero-copy,.hero-panel,.feature,.review,.article-item,.compare,.price-box,.network-box,.timeline-item,.form-card,.panel{padding:18px}
      .hero-kpis{grid-template-columns:1fr 1fr}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease, transform .5s ease}
    .reveal.in{opacity:1;transform:translateY(0)}