:root{
      --bg:#f7f6f2;
      --panel:#ffffff;
      --panel-2:#fbfaf7;
      --text:#1f2937;
      --muted:#5f6b7a;
      --line:#e7e1d7;
      --brand:#2563eb;
      --brand-2:#7c3aed;
      --accent:#f59e0b;
      --good:#0f766e;
      --shadow:0 12px 30px rgba(31,41,55,.08);
      --shadow2:0 8px 18px rgba(37,99,235,.10);
      --radius:20px;
      --radius-sm:14px;
      --max: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(37,99,235,.08), transparent 28%),
        radial-gradient(circle at 85% 8%, rgba(124,58,237,.08), transparent 22%),
        linear-gradient(180deg,#fcfbf8 0%, #f7f6f2 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{max-width:var(--max);margin:0 auto;padding:0 20px}
    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(247,246,242,.82);
      border-bottom:1px solid rgba(231,225,215,.8);
    }
    .topbar{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:74px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;border:1px solid var(--line)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .nav{
      display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end
    }
    .nav a{
      font-size:14px;color:#374151;padding:8px 10px;border-radius:999px;transition:.2s ease;
    }
    .nav a:hover,.nav a:focus-visible{background:#eef2ff;color:#1d4ed8;outline:none}
    .nav-toggle{display:none;border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:12px;padding:10px 12px}
    .hero{padding:40px 0 18px}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch
    }
    .hero-main,.hero-side,.section-card,.info-card,.compare-card,.faq-card,.form-card,.article-card,.review-card,.service-card,.timeline-card,.price-card,.case-card,.network-card,.about-card{
      background:var(--panel);border:1px solid rgba(231,225,215,.9);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-main{padding:28px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:999px;filter:blur(0);pointer-events:none
    }
    .hero-main:before{width:240px;height:240px;background:radial-gradient(circle, rgba(37,99,235,.14), transparent 70%);right:-85px;top:-70px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle, rgba(245,158,11,.16), transparent 68%);left:-58px;bottom:-74px}
    .kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef2ff;color:#1d4ed8;font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,4vw,48px);line-height:1.08;margin:16px 0 14px}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:56ch;margin:0 0 18px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0 22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;font-weight:700;border:1px solid transparent;
      transition:.22s ease;cursor:pointer;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(37,99,235,.18)}
    .btn-light{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-light:hover{transform:translateY(-2px);border-color:#c7d2fe;background:#f8faff}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mini{
      background:linear-gradient(180deg,#fff, #fbfbfd);border:1px solid var(--line);border-radius:16px;padding:14px
    }
    .mini strong{display:block;font-size:20px;color:#111827}
    .mini span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.5}
    .hero-side{padding:22px;display:grid;gap:14px;align-content:start}
    .side-figure{padding:16px;border-radius:18px;background:linear-gradient(135deg,#f8fbff,#fff7ed);border:1px solid #f1e8d8}
    .side-figure .logo-box{display:flex;align-items:center;gap:12px}
    .side-figure .logo-box img{width:54px;height:54px;object-fit:contain;background:#fff;border-radius:14px;padding:6px;border:1px solid var(--line)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 10px;border-radius:999px;background:#f8fafc;border:1px solid var(--line);font-size:13px;color:#334155}
    section{padding:16px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:0 0 16px}
    .section-head h2{font-size:clamp(22px,2.5vw,32px);margin:0}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:64ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .section-card,.info-card,.service-card,.case-card,.network-card,.price-card,.timeline-card,.about-card,.compare-card,.faq-card,.form-card,.article-card,.review-card{padding:20px}
    .metric strong{display:block;font-size:30px;line-height:1.1;margin-bottom:8px}
    .metric span{color:var(--muted);line-height:1.6}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,#eef2ff,#f5f3ff);color:#4f46e5;font-size:20px;margin-bottom:12px
    }
    .service-card h3,.case-card h3,.about-card h3,.timeline-card h3,.network-card h3,.price-card h3,.compare-card h3,.faq-card h3,.form-card h3,.article-card h3,.review-card h3{margin:0 0 10px;font-size:18px}
    .muted{color:var(--muted);line-height:1.75}
    .service-list,.bullet-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .service-list li,.bullet-list li{display:flex;gap:10px;align-items:flex-start;color:#334155;line-height:1.65}
    .service-list li:before,.bullet-list li:before{content:"✓";color:var(--good);font-weight:800;flex:0 0 auto}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:18px;border-radius:18px;background:var(--panel-2);border:1px solid var(--line)}
    .step .num{font-weight:800;color:#1d4ed8;margin-bottom:10px}
    table{width:100%;border-collapse:collapse}
    th,td{border:1px solid var(--line);padding:14px 12px;text-align:left;vertical-align:top;line-height:1.65}
    th{background:#f8fafc}
    .table-wrap{overflow:auto;border-radius:16px;border:1px solid var(--line)}
    .faq-item{border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden}
    .faq-q{
      width:100%;text-align:left;border:0;background:linear-gradient(180deg,#fff,#fbfbfd);padding:16px 18px;
      font-size:16px;font-weight:700;color:#111827;display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-item.active .faq-a{max-height:220px;padding-bottom:16px}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:transform .2s ease;color:#64748b}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-card .role{color:#1d4ed8;font-weight:700;font-size:13px;margin-bottom:10px}
    .stars{color:#f59e0b;font-size:16px;letter-spacing:2px;margin-bottom:8px}
    .article-list{display:grid;gap:12px}
    .article-list a{display:flex;justify-content:space-between;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:#fff}
    .article-list a span{color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700;color:#334155}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font:inherit;background:#fff;color:var(--text)
    }
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    footer{
      margin-top:18px;padding:26px 0 20px;background:#f1efe9;border-top:1px solid var(--line);color:#334155
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a,.home-link{
      padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff
    }
    .footer-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:#64748b;line-height:1.7}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{
      display:inline-flex;align-items:center;justify-content:center;
      width:48px;height:48px;border-radius:16px;border:1px solid rgba(231,225,215,.95);
      background:var(--panel);box-shadow:var(--shadow);cursor:pointer
    }
    .mobile-menu{display:none}
    .sticky-cta{
      position:fixed;left:50%;transform:translateX(-50%);bottom:16px;z-index:58;
      display:none;gap:10px;background:rgba(255,255,255,.9);border:1px solid var(--line);padding:10px;border-radius:18px;box-shadow:var(--shadow)
    }
    .compare-badge{display:inline-flex;padding:8px 12px;border-radius:999px;background:#ecfeff;color:#155e75;font-weight:700;font-size:13px;margin-bottom:12px}
    .rating-box{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .rating-box .mini{background:linear-gradient(180deg,#fff, #f8fbff)}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:88px 1fr;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
    .timeline-item:last-child{border-bottom:0;padding-bottom:0}
    .timeline-item b{color:#1d4ed8}
    .network-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .network-grid span{padding:12px 10px;border:1px solid var(--line);border-radius:14px;background:#fff;text-align:center}
    .price-list{display:grid;gap:10px}
    .price-line{display:flex;justify-content:space-between;gap:12px;padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .price-line strong{white-space:nowrap}
    .service-path{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .service-path .card{padding:16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .hero-side .btn{width:100%}
    @media (max-width: 1024px){
      .hero-grid,.grid-3,.review-grid,.footer-grid,.steps,.network-grid{grid-template-columns:1fr 1fr}
      .hero-points,.rating-box,.service-path{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 768px){
      .nav-toggle{display:inline-flex}
      .nav{display:none;position:absolute;left:20px;right:20px;top:74px;background:rgba(255,255,255,.98);padding:14px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
      header.open .nav{display:flex;flex-direction:column;align-items:flex-start}
      .hero-grid,.grid-3,.grid-2,.review-grid,.footer-grid,.steps,.network-grid,.hero-points,.rating-box,.service-path,.form-grid{grid-template-columns:1fr}
      .hero{padding-top:22px}
      .hero-main{padding:22px}
      .section-head{flex-direction:column;align-items:flex-start}
      .sticky-cta{display:flex}
      .timeline-item{grid-template-columns:1fr}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}