:root{
      --bg:#f5f8ff;
      --bg2:#eef4ff;
      --card:#ffffff;
      --card2:#f8fbff;
      --line:#dbe7ff;
      --text:#13213c;
      --muted:#5d6c89;
      --brand:#0a4cff;
      --brand2:#1d7bff;
      --accent:#ffcc33;
      --shadow:0 18px 50px rgba(17,53,120,.12);
      --shadow2:0 10px 24px rgba(15,46,100,.10);
      --radius:20px;
      --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 12% 10%, rgba(10,76,255,.09), transparent 22%),
        radial-gradient(circle at 88% 16%, rgba(29,123,255,.12), transparent 20%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 22%, #f7faff 100%);
      line-height:1.7;
    }
    a{color:var(--brand);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:50;
      background:rgba(255,255,255,.82);
      backdrop-filter:blur(14px);
      border-bottom:1px solid rgba(219,231,255,.85);
    }
    .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 img{width:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;box-shadow:var(--shadow2)}
    .brand h2{margin:0;font-size:18px;line-height:1.2}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    nav{display:flex;align-items:center;gap:16px}
    .nav-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
    .nav-links a{color:var(--text);font-size:14px;padding:8px 10px;border-radius:10px}
    .nav-links a:hover{background:#edf4ff;color:var(--brand)}
    .hero{
      padding:34px 0 26px;
      position:relative;
      overflow:hidden;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr;
      gap:22px;
      align-items:stretch;
    }
    .hero-main{
      background:linear-gradient(135deg, rgba(10,76,255,.98), rgba(16,122,255,.92) 52%, rgba(34,176,255,.88));
      color:#fff;
      border-radius:28px;
      padding:34px;
      box-shadow:0 22px 60px rgba(10,76,255,.22);
      position:relative;
      overflow:hidden;
      min-height:360px;
    }
    .hero-main:before,.hero-main:after{
      content:"";
      position:absolute;border-radius:50%;
      background:rgba(255,255,255,.12);
      filter:blur(4px);
    }
    .hero-main:before{width:220px;height:220px;right:-60px;top:-70px}
    .hero-main:after{width:180px;height:180px;left:-50px;bottom:-60px}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);padding:8px 12px;border-radius:999px;font-size:13px}
    .hero h1{margin:16px 0 14px;font-size:clamp(30px,4vw,48px);line-height:1.12;letter-spacing:.2px}
    .hero-desc{max-width:760px;color:rgba(255,255,255,.92);font-size:16px;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:13px 18px;font-weight:700;border:1px solid transparent;transition:.25s ease;cursor:pointer}
    .btn-primary{background:var(--accent);color:#1d2b4f;box-shadow:0 12px 26px rgba(255,204,51,.22)}
    .btn-primary:hover{transform:translateY(-2px)}
    .btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.22)}
    .btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
    .hero-side{
      display:grid;gap:16px;
    }
    .side-card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(219,231,255,.95);
      border-radius:22px;
      box-shadow:var(--shadow2);
      padding:20px;
    }
    .side-card h3{margin:0 0 10px;font-size:18px}
    .stats{
      display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:18px 0 0;
    }
    .stat{
      background:var(--card);
      border:1px solid var(--line);
      border-radius:20px;
      padding:18px;
      box-shadow:var(--shadow2);
    }
    .stat strong{display:block;font-size:26px;color:var(--brand);line-height:1}
    .stat span{display:block;margin-top:8px;color:var(--muted);font-size:13px}
    section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:700px}
    .card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .card{
      background:var(--card);
      border:1px solid var(--line);
      border-radius:22px;
      padding:20px;
      box-shadow:var(--shadow2);
      transition:.25s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#edf4ff;border:1px solid #d6e5ff;color:#21406f;font-size:13px}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .panel{
      background:linear-gradient(180deg,#fff, #f8fbff);
      border:1px solid var(--line);
      border-radius:24px;
      padding:22px;
      box-shadow:var(--shadow2);
    }
    .list{margin:0;padding:0;list-style:none;display:grid;gap:12px}
    .list li{display:flex;gap:10px;align-items:flex-start;color:var(--text)}
    .bullet{width:22px;height:22px;border-radius:50%;background:#e8f1ff;color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:12px;flex:0 0 auto;margin-top:2px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{position:relative}
    .step .num{display:inline-flex;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;align-items:center;justify-content:center;font-weight:700;margin-bottom:12px}
    .compare-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow2)}
    table{width:100%;border-collapse:collapse;min-width:920px}
    th,td{padding:14px 16px;border-bottom:1px solid #e7efff;text-align:left;vertical-align:top}
    th{background:#f3f7ff;color:#19345f}
    tr:hover td{background:#fbfdff}
    .rating{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .rating-box{
      background:linear-gradient(135deg,#0a4cff,#1590ff);
      color:#fff;border-radius:24px;padding:24px;box-shadow:0 16px 44px rgba(10,76,255,.18)
    }
    .rating-box strong{font-size:48px;line-height:1}
    .rating-box p{margin:8px 0 0;color:rgba(255,255,255,.92)}
    .faq{display:grid;gap:12px}
    .faq-item{border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow2);overflow:hidden}
    .faq-q{width:100%;text-align:left;background:transparent;border:0;padding:16px 18px;font-size:16px;color:var(--text);display:flex;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:180px;padding-bottom:16px}
    .faq-item.active .faq-q{color:var(--brand)}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow2)}
    .review .meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:13px;margin-bottom:10px}
    .review p{margin:0;color:var(--text)}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article a{display:block;color:var(--text)}
    .article small{display:inline-block;color:var(--brand);margin-bottom:8px}
    .article h3{margin:0 0 10px}
    .article p{margin:0;color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start}
    form{display:grid;gap:12px}
    .field{display:grid;gap:8px}
    label{font-size:14px;color:#24395f}
    input,select,textarea{
      width:100%;border:1px solid #cfe0ff;border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);outline:none;
      transition:.2s ease;font:inherit;
    }
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(10,76,255,.10)}
    textarea{min-height:124px;resize:vertical}
    .footer{
      padding:22px 0 26px;
      background:#f0f5ff;
      border-top:1px solid var(--line);
      color:var(--text);
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:16px}
    .footer h3,.footer h4{margin:0 0 12px}
    .footer p,.footer a{color:var(--text)}
    .footer small{color:var(--muted)}
    .simple-links{display:grid;gap:8px}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{
      border:0;border-radius:999px;padding:12px 15px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:var(--shadow2);cursor:pointer;font-weight:700
    }
    .floating a{display:inline-flex;align-items:center;justify-content:center}
    .back-top{display:none}
    .image-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .image-card{
      background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow2)
    }
    .image-card img{border-radius:14px;width:100%;height:auto}
    .mini-note{color:var(--muted);font-size:13px;margin-top:8px}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:80px 1fr;gap:14px;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow2)}
    .timeline-item b{color:var(--brand)}
    .service-network{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .network-item{padding:14px 16px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow2)}
    .mobile-only{display:none}
    @media (max-width: 1024px){
      .hero-grid,.rating,.form-grid,.footer-grid,.two-col{grid-template-columns:1fr}
      .stats,.card-grid,.steps,.reviews,.articles,.service-network{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 760px){
      .topbar{padding:12px 0}
      nav{position:fixed;left:0;right:0;top:68px;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);padding:14px 20px;display:none;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow2)}
      nav.open{display:flex}
      .nav-toggle{display:inline-flex}
      .nav-links{flex-direction:column;align-items:flex-start;gap:4px;width:100%}
      .nav-links a{width:100%}
      .hero{padding-top:18px}
      .hero-main{padding:24px;border-radius:24px;min-height:auto}
      .hero h1{font-size:30px}
      .stats,.card-grid,.steps,.reviews,.articles,.service-network,.image-row{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .floating{right:12px;bottom:12px}
      .back-top{display:inline-flex}
      .timeline-item{grid-template-columns:1fr}
    }
    .reveal{opacity:0;transform:translateY(14px);transition:.55s ease}
    .reveal.show{opacity:1;transform:translateY(0)}