:root{
      --bg:#f5fbfa;
      --surface:#ffffff;
      --surface-2:#edf8f6;
      --line:#d8ebe8;
      --text:#17313d;
      --muted:#5d7380;
      --primary:#0f766e;
      --primary-2:#14b8a6;
      --accent:#3bb8c8;
      --gold:#d6a74b;
      --shadow:0 18px 40px rgba(16, 56, 61, .08);
      --radius:18px;
      --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 top left, rgba(20,184,166,.12), transparent 28%),
        radial-gradient(circle at 85% 10%, rgba(59,184,200,.10), transparent 22%),
        linear-gradient(180deg, #f9fdfc 0%, #f3faf9 100%);
      line-height:1.65;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(249,253,252,.82);
      border-bottom:1px solid rgba(216,235,232,.75);
    }
    .nav-wrap{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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:0 10px 24px rgba(15,118,110,.08)}
    .brand-title{display:flex;flex-direction:column;min-width:0}
    .brand-title strong{font-size:1rem;letter-spacing:.02em}
    .brand-title span{font-size:.82rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-toggle{display:none;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:12px;padding:10px 12px;font-size:.95rem}
    .nav-links{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{
      padding:8px 11px;border-radius:999px;font-size:.92rem;color:var(--text);
      transition:.2s ease;background:transparent
    }
    .nav-links a:hover,.nav-links a:focus{background:rgba(20,184,166,.09);color:var(--primary)}
    .home-btn{
      display:inline-flex;align-items:center;gap:8px;
      padding:11px 16px;border-radius:999px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      color:#fff;font-weight:700;box-shadow:0 12px 28px rgba(15,118,110,.22);
      transition:.2s ease;
    }
    .home-btn:hover{transform:translateY(-1px);box-shadow:0 16px 34px rgba(15,118,110,.26)}
    .hero{padding:34px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-main{
      position:relative;overflow:hidden;border:1px solid rgba(218,237,234,.95);
      background:linear-gradient(135deg,#ffffff 0%, #f4fbfa 55%, #eefaf8 100%);
      border-radius:28px;padding:30px;box-shadow:var(--shadow)
    }
    .hero-main::before,.hero-main::after{
      content:"";position:absolute;border-radius:999px;pointer-events:none
    }
    .hero-main::before{width:180px;height:180px;right:-60px;top:-50px;background:radial-gradient(circle, rgba(20,184,166,.16), transparent 65%)}
    .hero-main::after{width:220px;height:220px;right:20px;bottom:-120px;background:radial-gradient(circle, rgba(59,184,200,.14), transparent 65%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(15,118,110,.08);color:var(--primary);font-weight:700;font-size:.88rem}
    h1{margin:14px 0 12px;font-size:clamp(2rem,4.7vw,3.55rem);line-height:1.12;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:1.04rem;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;
      border-radius:14px;padding:12px 18px;font-weight:700;border:1px solid transparent;
      transition:.2s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),#1188a5);color:#fff;box-shadow:0 14px 28px rgba(15,118,110,.22)}
    .btn-primary:hover{transform:translateY(-2px)}
    .btn-ghost{background:#fff;color:var(--primary);border-color:var(--line)}
    .btn-ghost:hover{border-color:rgba(20,184,166,.35);transform:translateY(-1px)}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .point{
      background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:18px;padding:14px
    }
    .point strong{display:block;font-size:1.2rem}
    .point span{font-size:.88rem;color:var(--muted)}
    .hero-side{
      display:grid;grid-template-rows:auto auto auto;gap:14px
    }
    .side-card{
      background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow)
    }
    .side-card h3,.section-head h2{margin:0 0 10px;font-size:1.32rem}
    .kpi-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .kpi{
      background:linear-gradient(180deg,#fff, #f4fbfa);
      border:1px solid var(--line);border-radius:16px;padding:14px
    }
    .kpi strong{display:block;font-size:1.25rem;color:var(--primary)}
    .kpi span{font-size:.86rem;color:var(--muted)}
    .badge-row{display:flex;flex-wrap:wrap;gap:8px}
    .badge{padding:7px 10px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);font-size:.86rem;color:#28525f}
    .section{padding:18px 0}
    .section-card{
      background:rgba(255,255,255,.88);border:1px solid rgba(216,235,232,.9);
      border-radius:28px;padding:24px;box-shadow:var(--shadow)
    }
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}
    .section-head p{margin:0;color:var(--muted);max-width:70ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .card{
      background:linear-gradient(180deg,#fff 0%, #f7fcfb 100%);
      border:1px solid var(--line);border-radius:20px;padding:18px;transition:.2s ease;box-shadow:0 10px 24px rgba(19,58,64,.05)
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(19,58,64,.09)}
    .card h3{margin:0 0 8px;font-size:1.05rem}
    .card p{margin:0;color:var(--muted)}
    .icon{
      width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(20,184,166,.16),rgba(15,118,110,.08));
      color:var(--primary);margin-bottom:12px;font-weight:800
    }
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .timeline{display:grid;gap:12px}
    .step{display:flex;gap:14px;align-items:flex-start;padding:14px;border-radius:18px;border:1px solid var(--line);background:#fff}
    .step-num{flex:0 0 34px;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:grid;place-items:center;font-weight:800}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #e8f2f0;text-align:left;vertical-align:top}
    th{background:#f3faf8;color:#1f3c46;font-size:.92rem}
    tr:last-child td{border-bottom:none}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#28525f}
    .compare-box{
      display:grid;grid-template-columns:.95fr 1.05fr;gap:16px;align-items:stretch
    }
    .score-panel{
      background:linear-gradient(160deg, #0f766e 0%, #0f8b8e 100%);
      color:#fff;border-radius:24px;padding:24px;box-shadow:0 18px 40px rgba(15,118,110,.24)
    }
    .score-stars{font-size:1.5rem;letter-spacing:.12em;margin:10px 0 6px}
    .score-panel p{color:rgba(255,255,255,.88)}
    .mini-list{display:grid;gap:10px;margin-top:16px}
    .mini-item{display:flex;justify-content:space-between;gap:12px;padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.12)}
    .mini-item span:last-child{font-weight:800}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review small{display:block;color:var(--muted);margin-top:10px}
    .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .article-item{
      display:flex;gap:14px;align-items:flex-start;padding:16px;border:1px solid var(--line);background:#fff;border-radius:18px
    }
    .article-dot{width:12px;height:12px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,var(--primary),var(--accent))}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .form-field{display:flex;flex-direction:column;gap:8px}
    label{font-weight:600;color:#24424d;font-size:.95rem}
    input,select,textarea{
      width:100%;padding:13px 14px;border:1px solid #cfe3e0;border-radius:14px;background:#fff;color:var(--text);
      font:inherit;outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(20,184,166,.65);box-shadow:0 0 0 4px rgba(20,184,166,.12)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .submit-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:8px}
    .faq-list{display:grid;gap:12px}
    details{
      background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 16px;box-shadow:0 8px 20px rgba(19,58,64,.04)
    }
    summary{cursor:pointer;list-style:none;padding:14px 0;font-weight:700;color:#203943}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 16px;color:var(--muted)}
    .footer{
      padding:22px 0 34px;
      color:#23414b
    }
    .footer-inner{
      border-top:1px solid var(--line);
      padding-top:18px;
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:18px;
    }
    .footer a{color:#0f766e}
    .footer a:hover{text-decoration:underline}
    .footer-note{color:var(--muted);font-size:.92rem}
    .contact-box,.service-box{
      border:1px solid var(--line);border-radius:22px;background:#fff;padding:18px
    }
    .contact-grid{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center}
    .qr{width:132px;aspect-ratio:1;border-radius:18px;border:1px solid var(--line);overflow:hidden;background:#fff}
    .qr img{width:100%;height:100%;object-fit:cover}
    .contact-list{display:grid;gap:8px}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-tools a,.float-tools button{
      border:none;border-radius:999px;padding:12px 14px;box-shadow:0 14px 28px rgba(16,56,61,.15);
      background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-weight:700;cursor:pointer
    }
    .float-tools .ghost{background:#fff;color:var(--primary);border:1px solid var(--line)}
    .scroll-top{display:none}
    .reveal{opacity:0;transform:translateY(14px);transition:all .6s ease}
    .reveal.in{opacity:1;transform:none}
    .gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .gallery figure{margin:0;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:#fff}
    .gallery figcaption{padding:10px 12px;color:var(--muted);font-size:.88rem}
    .gallery img{width:100%;aspect-ratio:1.15/1;object-fit:cover}
    .service-network{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .network-item{padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .price-box{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .price-card{padding:18px;border-radius:20px;background:#fff;border:1px solid var(--line)}
    .price-card strong{display:block;font-size:1.2rem;color:var(--primary)}
    .sticky-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .sticky-tags span{padding:6px 10px;border-radius:999px;background:rgba(15,118,110,.08);color:var(--primary);font-size:.84rem}
    @media (max-width: 1024px){
      .hero-grid,.compare-box,.two-col,.footer-inner,.service-network,.grid-4,.reviews,.gallery,.article-list,.price-box{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 780px){
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:68px;flex-direction:column;align-items:stretch;
        background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)
      }
      .nav-links.open{display:flex}
      .nav-links a{text-align:center;padding:11px 12px}
      .hero-grid,.compare-box,.two-col,.footer-inner,.service-network,.grid-4,.reviews,.gallery,.article-list,.price-box,.hero-points,.kpi-list,.form-grid{grid-template-columns:1fr}
      .hero-main,.section-card{padding:20px;border-radius:22px}
      .section-head{flex-direction:column;align-items:flex-start}
      .contact-grid{grid-template-columns:1fr}
      .qr{width:160px}
    }