:root{
      --bg:#f7f4ee;
      --panel:#ffffff;
      --panel-2:#fff7ea;
      --line:#eadfcf;
      --text:#1f2a37;
      --muted:#5f6b7a;
      --brand:#ff5a3d;
      --brand-2:#ffbf2f;
      --blue:#245bff;
      --green:#12a57a;
      --shadow:0 18px 50px rgba(31,42,55,.10);
      --shadow-sm:0 8px 20px rgba(31,42,55,.08);
      --radius:22px;
      --container:1200px;
    }
    *{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(255,90,61,.10), transparent 30%),
        radial-gradient(circle at top right, rgba(36,91,255,.09), transparent 28%),
        linear-gradient(180deg, #fffdf8 0%, var(--bg) 45%, #f8f6f2 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(180%) blur(16px);
      background:rgba(255,252,245,.86);
      border-bottom:1px solid rgba(234,223,207,.8);
    }
    .nav{
      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 .mark{
      width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 10px 24px rgba(255,90,61,.25);display:grid;place-items:center;color:#fff;font-weight:800
    }
    .brand .txt{display:flex;flex-direction:column;line-height:1.1}
    .brand strong{font-size:16px}
    .brand span{font-size:12px;color:var(--muted)}
    .nav-links{
      display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:center
    }
    .nav-links a,.nav-cta a,.ghost-btn,.primary-btn,.mini-btn{
      transition:.22s ease; border-radius:999px;
    }
    .nav-links a{
      padding:9px 12px;font-size:14px;color:var(--text)
    }
    .nav-links a:hover,.nav-links a:focus-visible{background:#fff;box-shadow:var(--shadow-sm)}
    .nav-right{display:flex;align-items:center;gap:10px}
    .primary-btn,.ghost-btn,.mini-btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;cursor:pointer;font-weight:700
    }
    .primary-btn{
      background:linear-gradient(135deg,var(--brand),#ff7f50);
      color:#fff;padding:12px 18px;box-shadow:0 12px 24px rgba(255,90,61,.25)
    }
    .primary-btn:hover{transform:translateY(-1px);box-shadow:0 16px 30px rgba(255,90,61,.28)}
    .ghost-btn{
      background:#fff;color:var(--text);padding:12px 18px;border-color:var(--line)
    }
    .ghost-btn:hover{transform:translateY(-1px);border-color:#d8c9b4}
    .mini-btn{padding:10px 14px;background:#fff;border-color:var(--line);color:var(--text)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .menu-btn span{display:block;width:18px;height:2px;background:var(--text);margin:3px 0;border-radius:2px}
    .hero{padding:34px 0 18px}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch
    }
    .hero-main,.hero-side,.card,.section-card,.review,.faq-item,.info-box,.form-box,.step,.compare-box,.article,.tag-cloud,.quote{
      background:rgba(255,255,255,.9);
      border:1px solid rgba(234,223,207,.9);
      box-shadow:var(--shadow-sm);
      border-radius:var(--radius)
    }
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:50%;filter:blur(6px);pointer-events:none
    }
    .hero-main:before{width:180px;height:180px;background:rgba(255,90,61,.12);top:-60px;right:-40px}
    .hero-main:after{width:220px;height:220px;background:rgba(36,91,255,.10);bottom:-90px;left:-70px}
    .kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff4ee;color:#b63b24;font-weight:700;font-size:13px;border:1px solid #ffd2c7}
    h1{font-size:clamp(32px,5vw,56px);line-height:1.08;margin:16px 0 14px}
    .hero p{color:var(--muted);font-size:16px;line-height:1.8;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .point{padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px}
    .point strong{display:block;font-size:18px}
    .point span{color:var(--muted);font-size:13px}
    .hero-side{padding:24px;display:grid;gap:14px;background:linear-gradient(180deg,#fffdf8 0%,#fff 100%)}
    .hero-side .logo-box{display:flex;align-items:center;gap:14px;padding:14px;border-radius:18px;background:linear-gradient(135deg,#fff5ec,#f6fbff);border:1px solid #f2dfcf}
    .hero-side .logo-box img{width:62px;height:62px;object-fit:contain}
    .hero-side h2{font-size:22px;margin:0}
    .hero-side ul{padding:0;margin:0;list-style:none;display:grid;gap:10px}
    .hero-side li{padding:12px 12px 12px 14px;background:#fff;border:1px solid var(--line);border-radius:16px;color:var(--text)}
    .hero-side li b{color:#0e7661}
    .section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:720px;line-height:1.7}
    .stats,.services,.steps,.reviews,.articles,.faq-grid,.price-grid,.network-grid,.compare-grid,.case-grid,.support-grid,.cloud,.benefits{
      display:grid;gap:16px
    }
    .stats{grid-template-columns:repeat(4,1fr)}
    .stat{padding:20px}
    .stat .num{font-size:30px;font-weight:800;color:#102a43}
    .stat .label{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.6}
    .section-card{padding:20px}
    .services{grid-template-columns:repeat(3,1fr)}
    .service h3,.step h3,.article h3,.review h3{margin:0 0 10px;font-size:18px}
    .service p,.step p,.article p,.review p{margin:0;color:var(--muted);line-height:1.75}
    .tag-cloud{padding:18px}
    .cloud{grid-template-columns:repeat(6,1fr)}
    .chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 12px;text-align:center;font-size:14px}
    .benefits{grid-template-columns:repeat(3,1fr)}
    .benefit{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff 0,#fff8f0 100%);border:1px solid var(--line)}
    .benefit strong{display:block;margin-bottom:8px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:14px 16px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}
    th{background:#fff8ef}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#eef7ff;color:#245bff;font-size:12px;font-weight:700}
    .score{font-weight:800;color:#b63b24}
    .price-grid{grid-template-columns:repeat(3,1fr)}
    .price{padding:22px}
    .price .amt{font-size:30px;font-weight:800}
    .price ul{margin:14px 0 0;padding-left:18px;color:var(--muted);line-height:1.8}
    .compare-grid{grid-template-columns:1.15fr .85fr}
    .compare-box{padding:22px}
    .compare-box ul{margin:14px 0 0;padding-left:18px;line-height:1.8;color:var(--muted)}
    .network-grid{grid-template-columns:1fr 1fr}
    .steps{grid-template-columns:repeat(4,1fr)}
    .step{padding:20px;position:relative}
    .step .index{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#ffefe7,#fff3bf);font-weight:800;margin-bottom:12px}
    .case-grid{grid-template-columns:repeat(3,1fr)}
    .case{padding:20px;background:linear-gradient(180deg,#fff 0,#fff8f2 100%)}
    .case .title{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:10px}
    .support-grid{grid-template-columns:1.1fr .9fr}
    .form-box{padding:22px}
    form{display:grid;gap:12px}
    .form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    label{display:grid;gap:8px;font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);font:inherit;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#ff8d5c;box-shadow:0 0 0 4px rgba(255,90,61,.08)}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;border:0;background:transparent;color:var(--text);text-align:left;padding:18px 20px;font:inherit;font-weight:800;display:flex;justify-content:space-between;gap:12px;align-items:center;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease,padding .28s ease;color:var(--muted);padding:0 20px}
    .faq-item.open .faq-a{max-height:180px;padding:0 20px 18px}
    .faq-item.open .faq-q .arrow{transform:rotate(180deg)}
    .arrow{transition:transform .25s ease}
    .reviews{grid-template-columns:repeat(3,1fr)}
    .review{padding:20px}
    .review .meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:13px;margin-bottom:12px}
    .articles{grid-template-columns:repeat(3,1fr)}
    .article{padding:20px}
    .article .meta{font-size:13px;color:var(--muted);margin-top:10px}
    .links{display:flex;flex-wrap:wrap;gap:10px}
    .links a{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px}
    .footer{
      margin-top:18px;padding:20px 0 28px;border-top:1px solid rgba(234,223,207,.9)
    }
    .footer-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
    .footer p,.footer li,.footer a{color:#415161}
    .footer .small{font-size:13px;line-height:1.8;color:#5d6876}
    .copyright{margin-top:14px;padding-top:14px;border-top:1px solid #eadfcf;font-size:13px;color:#667788}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{
      border:1px solid var(--line);background:#fff;border-radius:16px;padding:12px 14px;box-shadow:var(--shadow-sm);font-weight:700;cursor:pointer
    }
    .backtop{display:none}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.visible{opacity:1;transform:none}
    .mobile-menu{display:none}
    @media (max-width: 1024px){
      .hero-grid,.compare-grid,.support-grid,.footer-inner,.network-grid{grid-template-columns:1fr}
      .stats,.services,.steps,.reviews,.articles,.case-grid,.price-grid,.benefits,.cloud{grid-template-columns:repeat(2,1fr)}
      .hero-points{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-menu{display:none;padding:0 0 16px}
      .mobile-menu.open{display:block}
      .mobile-menu .panel{display:grid;gap:8px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-sm)}
      .mobile-menu a{padding:10px 12px;border-radius:12px;background:#fff7ef}
    }
    @media (max-width: 720px){
      .hero-main,.hero-side,.section-card,.form-box,.compare-box,.stat,.service,.step,.review,.article,.case,.price,.benefit{padding:18px}
      .stats,.services,.steps,.reviews,.articles,.case-grid,.price-grid,.benefits,.cloud,.form-row{grid-template-columns:1fr}
      h1{font-size:30px}
      .section-head{flex-direction:column;align-items:flex-start}
      .hero{padding-top:20px}
      .nav{padding:12px 0}
      .brand strong{font-size:15px}
      .floating{right:12px;bottom:12px}
      .floating a,.floating button{padding:11px 12px;border-radius:14px}
    }
    .table-note{font-size:13px;color:var(--muted);margin-top:10px}