:root{
      --bg:#f6f7fb;
      --panel:#ffffff;
      --panel-2:#fdf7ef;
      --text:#162033;
      --muted:#5c687d;
      --line:#e5e9f2;
      --brand:#0d6bff;
      --brand-2:#ff4d5e;
      --brand-3:#ffb000;
      --shadow:0 18px 40px rgba(21,38,74,.08);
      --radius:22px;
      --radius-sm: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;background:linear-gradient(180deg,#eef4ff 0%,#f7f8fc 18%,#f6f7fb 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--container));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(246,247,251,.84);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid rgba(229,233,242,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;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:12px;background:#fff;padding:4px;box-shadow:0 8px 20px rgba(13,107,255,.12)}
    .brand strong{display:block;font-size:16px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:14px;padding:10px 12px;color:var(--text)}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:13px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover{background:#fff;color:var(--text);box-shadow:0 8px 18px rgba(18,34,70,.08)}
    .nav-links .cta{background:linear-gradient(135deg,var(--brand) 0%,#4b8dff 100%);color:#fff}
    .nav-links .cta:hover{transform:translateY(-1px)}
    main{padding-bottom:8px}
    section{padding:28px 0}
    .hero{padding:30px 0 18px}
    .hero-wrap{display:grid;grid-template-columns:1.18fr .82fr;gap:24px;align-items:stretch}
    .hero-card{position:relative;overflow:hidden;background:linear-gradient(135deg,#0f56d6 0%,#1d74ff 46%,#ff5d6c 100%);color:#fff;border-radius:28px;padding:30px;box-shadow:var(--shadow)}
    .hero-card::before,.hero-card::after{content:"";position:absolute;border-radius:999px;background:rgba(255,255,255,.12);filter:blur(2px)}
    .hero-card::before{width:220px;height:220px;right:-80px;top:-70px}
    .hero-card::after{width:140px;height:140px;right:140px;bottom:-40px}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.14);font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px,5vw,52px);line-height:1.08;letter-spacing:-.02em}
    .hero-desc{max-width:60ch;color:rgba(255,255,255,.92);font-size:16px;line-height:1.8;margin:0 0 20px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:14px;padding:13px 18px;font-weight:700;transition:.22s ease;cursor:pointer}
    .btn-primary{background:#fff;color:#12326e;box-shadow:0 14px 28px rgba(255,255,255,.16)}
    .btn-primary:hover{transform:translateY(-2px)}
    .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.18)}
    .btn-ghost:hover{transform:translateY(-2px);background:rgba(255,255,255,.18)}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px}
    .hero-badges span{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.13);font-size:13px}
    .hero-side{display:grid;gap:16px}
    .glass-card,.info-card,.service-card,.case-card,.review-card,.faq-item,.article-card,.form-card,.compare-card,.timeline-card,.price-card,.network-card{background:var(--panel);border:1px solid rgba(229,233,242,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .glass-card{padding:22px}
    .mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .metric{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border:1px solid var(--line)}
    .metric strong{display:block;font-size:24px;color:#173c8a}
    .metric span{display:block;color:var(--muted);font-size:13px;margin-top:6px;line-height:1.5}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(24px,3.2vw,36px);line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.75}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .info-card,.service-card,.case-card,.review-card,.article-card,.price-card,.network-card,.timeline-card,.compare-card,.form-card{padding:22px}
    .info-card h3,.service-card h3,.case-card h3,.review-card h3,.article-card h3,.price-card h3,.network-card h3,.timeline-card h3,.compare-card h3,.form-card h3{margin:0 0 10px;font-size:18px}
    .muted{color:var(--muted);line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;border-radius:999px;background:#fff7e8;border:1px solid #ffe1a8;color:#8d5a00;font-size:13px}
    .band{background:linear-gradient(180deg,rgba(255,255,255,.75),rgba(255,255,255,.95));border-top:1px solid rgba(229,233,242,.8);border-bottom:1px solid rgba(229,233,242,.8)}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{padding:20px;border-radius:20px;background:linear-gradient(180deg,#fff 0%,#fbfcff 100%);border:1px solid var(--line);position:relative}
    .step .num{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand) 0%,#6ea4ff 100%);color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow-x:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    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:#f5f8ff;font-size:14px}
    td{color:var(--text)}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#e8f1ff;color:#1856b8;font-size:12px;font-weight:700}
    .badge.hot{background:#fff0f2;color:#c8213b}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#ff9f1a;font-size:18px;letter-spacing:2px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .list{margin:0;padding-left:18px;color:var(--muted);line-height:1.8}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;background:none;border:0;padding:18px 20px;color:var(--text);font-size:16px;font-weight:700;text-align:left;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease,padding .28s ease;border-top:1px solid transparent;padding:0 20px;color:var(--muted);line-height:1.8}
    .faq-item.active .faq-a{max-height:180px;padding:0 20px 18px;border-top-color:var(--line)}
    .faq-item.active .icon{transform:rotate(45deg)}
    .icon{transition:transform .2s}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .avatar{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#e8f1ff,#fff0f2);display:grid;place-items:center;font-weight:800;color:#1d3f8f}
    .review-top{display:flex;align-items:center;gap:12px;margin-bottom:10px}
    .review-card p{margin:0;color:var(--muted);line-height:1.8}
    .article-card .meta{font-size:12px;color:#7a879b;margin-bottom:10px}
    .articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#86b3ff;box-shadow:0 0 0 4px rgba(13,107,255,.08)}
    textarea{min-height:120px;resize:vertical}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:10px}
    .note{font-size:13px;color:var(--muted)}
    footer{margin-top:6px;background:#0c1730;color:#dce5ff;padding:28px 0}
    footer a{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.05fr .95fr 1fr;gap:20px;align-items:start}
    .footer-grid h3{margin:0 0 10px;font-size:18px;color:#fff}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 10px;border-radius:10px;background:rgba(255,255,255,.08)}
    .copyright{margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#b9c5e6}
    .floating{position:fixed;right:18px;bottom:18px;z-index:40;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand) 0%,#59a0ff 100%);color:#fff;box-shadow:0 16px 34px rgba(13,107,255,.28)}
    .float-btn.kf{background:linear-gradient(135deg,var(--brand-2) 0%,#ff7b88 100%)}
    .back-top{opacity:0;pointer-events:none;transform:translateY(8px);transition:.2s}
    .back-top.show{opacity:1;pointer-events:auto;transform:none}
    .banner-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .banner-row img,.gallery img{width:100%;border-radius:20px;object-fit:cover;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    .gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .gallery .card{padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .timeline-card{position:relative}
    .timeline-card strong{display:block;margin-bottom:8px}
    .timeline-card::before{content:"";position:absolute;left:22px;top:22px;width:10px;height:10px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 6px rgba(255,77,94,.12)}
    .timeline-card{padding-left:44px}
    .small{font-size:12px;color:var(--muted)}
    .center{display:flex;justify-content:center}
    .anchor{scroll-margin-top:92px}
    .service-card ul,.case-card ul,.network-card ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.8}
    .price-list{display:grid;gap:12px}
    .price-item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;border-radius:16px;background:#f8fbff;border:1px solid var(--line)}
    .price-item strong{font-size:15px}
    .price-item span{font-weight:800;color:#0f56d6}
    .mobile-only{display:none}
    @media (max-width: 1080px){
      .hero-wrap,.split,.footer-grid,.grid-4,.grid-3,.reviews,.articles,.banner-row,.timeline,.steps{grid-template-columns:1fr 1fr}
      .nav-links{display:none}
      .nav-toggle{display:inline-flex}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav.open .nav-links a{padding:12px 14px}
    }
    @media (max-width: 720px){
      .hero-wrap,.split,.footer-grid,.grid-4,.grid-3,.reviews,.articles,.banner-row,.timeline,.steps,.form-grid,.gallery{grid-template-columns:1fr}
      .hero-card{padding:22px}
      .hero-actions,.form-actions{flex-direction:column;align-items:stretch}
      .btn{width:100%}
      .section-head{flex-direction:column;align-items:flex-start}
      .mobile-only{display:block}
      .desktop-only{display:none}
      th,td{padding:12px 10px}
    }
    .fade-up{opacity:0;transform:translateY(16px);transition:.55s ease}
    .fade-up.in{opacity:1;transform:none}