:root{
      --bg:#f4f7fb;
      --card:#ffffff;
      --card2:#eef4ff;
      --primary:#0f4fd8;
      --primary2:#1b72ff;
      --accent:#00a3ff;
      --text:#122033;
      --muted:#5d6b82;
      --line:#dbe5f3;
      --shadow:0 18px 40px rgba(15,79,216,.12);
      --shadow2:0 12px 28px rgba(18,32,51,.08);
      --radius:20px;
    }
    *{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(27,114,255,.12), transparent 28%),
        radial-gradient(circle at 85% 8%, rgba(0,163,255,.11), transparent 26%),
        linear-gradient(180deg,#f8fbff 0%, #eef4ff 24%, #f4f7fb 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(1180px, calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky; top:0; z-index:50;
      backdrop-filter:saturate(160%) blur(14px);
      background:rgba(244,247,251,.82);
      border-bottom:1px solid rgba(219,229,243,.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;border:1px solid var(--line);padding:4px}
    .brand strong{display:block;font-size:18px;letter-spacing:.5px}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex; flex-wrap:wrap; justify-content:flex-end; gap:10px}
    .nav-links a,.nav-links button{
      border:1px solid transparent; background:transparent; color:var(--text);
      padding:9px 12px; border-radius:999px; font-size:14px; cursor:pointer;
      transition:.2s ease;
    }
    .nav-links a:hover,.nav-links button:hover{background:#fff;border-color:var(--line);box-shadow:var(--shadow2);transform:translateY(-1px)}
    .nav-actions{display:flex; gap:10px; align-items:center}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      padding:12px 18px; border-radius:999px; border:1px solid transparent;
      font-weight:700; cursor:pointer; transition:.22s ease; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2)); color:#fff; box-shadow:0 12px 22px rgba(15,79,216,.22)}
    .btn-ghost{background:#fff; color:var(--primary); border-color:var(--line)}
    .btn:hover{transform:translateY(-2px); box-shadow:var(--shadow)}
    .menu-toggle{display:none}
    .hero{
      padding:40px 0 18px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.15fr .85fr; gap:22px; align-items:stretch;
    }
    .hero-main{
      padding:34px; border-radius:28px; background:
        linear-gradient(135deg, rgba(15,79,216,.98), rgba(27,114,255,.94) 58%, rgba(0,163,255,.88));
      color:#fff; box-shadow:0 28px 60px rgba(15,79,216,.24); position:relative; overflow:hidden;
    }
    .hero-main::before,.hero-main::after{
      content:""; position:absolute; border-radius:50%;
      background:rgba(255,255,255,.12); filter:blur(4px);
      animation:float 7s ease-in-out infinite;
    }
    .hero-main::before{width:180px;height:180px;right:-42px;top:-34px}
    .hero-main::after{width:120px;height:120px;right:108px;bottom:-34px;animation-delay:-2s}
    @keyframes float{50%{transform:translateY(-12px) translateX(8px)}}
    .eyebrow{display:inline-flex; gap:8px; align-items:center; font-size:13px; padding:8px 12px; border-radius:999px; background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.16)}
    h1{margin:18px 0 12px; font-size:clamp(32px, 5vw, 54px); line-height:1.08}
    .hero-main p{margin:0; color:rgba(255,255,255,.92); font-size:16px; line-height:1.85; max-width:58ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:24px}
    .hero-actions .btn-ghost{background:rgba(255,255,255,.12); color:#fff; border-color:rgba(255,255,255,.2)}
    .hero-metrics{
      display:grid; grid-template-columns:repeat(2,1fr); gap:14px; margin-top:26px;
    }
    .metric{
      background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.15); border-radius:18px; padding:16px;
      backdrop-filter: blur(8px);
    }
    .metric b{display:block; font-size:22px; margin-bottom:6px}
    .metric span{font-size:13px; color:rgba(255,255,255,.88)}
    .hero-side{
      display:grid; gap:14px;
    }
    .side-card{
      background:linear-gradient(180deg,#fff,#f8fbff); border:1px solid var(--line); border-radius:24px;
      padding:20px; box-shadow:var(--shadow2);
    }
    .side-card h2{margin:0 0 10px; font-size:18px}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag-cloud span,.pill{
      padding:8px 12px; border-radius:999px; background:var(--card2); color:#1740a7; border:1px solid #d7e4ff; font-size:13px
    }
    .section{padding:18px 0}
    .section h2{margin:0 0 14px; font-size:28px}
    .section p.lead{margin:0 0 18px; color:var(--muted); line-height:1.8}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:16px}
    .card{
      background:var(--card); border:1px solid var(--line); border-radius:22px; padding:20px; box-shadow:var(--shadow2);
      transition:.22s ease; overflow:hidden;
    }
    .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); line-height:1.8}
    .stats{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .stat{padding:18px; border-radius:20px; background:linear-gradient(180deg,#fff,#f3f7ff); border:1px solid var(--line)}
    .stat strong{display:block; font-size:24px; color:var(--primary); margin-bottom:6px}
    .stat span{color:var(--muted); font-size:14px}
    .steps{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .step{position:relative}
    .step .index{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:12px}
    .step h3{margin:0 0 8px}
    .compare-wrap{overflow-x:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow2)}
    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; color:#13233d}
    tr:hover td{background:#fbfdff}
    .rating{
      display:flex; align-items:center; gap:10px; flex-wrap:wrap
    }
    .stars{color:#ffad0d; font-size:20px; letter-spacing:2px}
    details{
      border:1px solid var(--line); border-radius:18px; background:#fff; box-shadow:var(--shadow2); overflow:hidden
    }
    details+details{margin-top:12px}
    summary{
      list-style:none; cursor:pointer; padding:18px 20px; font-weight:700; display:flex; justify-content:space-between; gap:14px; align-items:center
    }
    summary::-webkit-details-marker{display:none}
    details .answer{padding:0 20px 18px; color:var(--muted); line-height:1.8}
    .testimonials .card{display:flex; flex-direction:column; gap:12px}
    .avatar{
      width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,#dfeaff,#ffffff);display:grid;place-items:center;font-weight:800;color:var(--primary);border:1px solid var(--line)
    }
    .person{display:flex; align-items:center; gap:12px}
    .person div span{display:block;color:var(--muted);font-size:13px;margin-top:2px}
    .article-list{display:grid; gap:12px}
    .article-item{
      display:flex; justify-content:space-between; gap:16px; align-items:center;
      padding:16px 18px; border-radius:18px; background:#fff; border:1px solid var(--line)
    }
    .article-item span{color:var(--muted); font-size:13px}
    .form{
      display:grid; grid-template-columns:repeat(2,1fr); gap:14px
    }
    .field{display:flex; flex-direction:column; gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px; font-weight:700}
    input,select,textarea{
      width:100%; border:1px solid #cad6ea; border-radius:14px; padding:13px 14px; background:#fff; color:var(--text);
      font:inherit; outline:none; transition:.2s ease;
    }
    input:focus,select:focus,textarea:focus{border-color:var(--primary); box-shadow:0 0 0 4px rgba(15,79,216,.1)}
    textarea{min-height:120px; resize:vertical}
    .footer{
      margin-top:18px; padding:24px 0 28px; border-top:1px solid rgba(219,229,243,.9);
      background:linear-gradient(180deg, rgba(255,255,255,.52), rgba(245,248,255,.92));
      color:var(--text);
    }
    .footer-grid{display:grid; grid-template-columns:1.2fr .8fr .8fr; gap:18px}
    .footer a{color:var(--primary)}
    .contact-box,.qr-box{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow2)}
    .qr-box img{width:160px; height:160px; object-fit:cover; border-radius:16px; border:1px solid var(--line)}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:60; display:flex; flex-direction:column; gap:10px;
    }
    .floating a,.floating button{
      width:52px; height:52px; border-radius:18px; display:grid; place-items:center; border:1px solid var(--line);
      background:#fff; box-shadow:var(--shadow2); cursor:pointer
    }
    .hidden-mobile{display:block}
    .scroll-top{opacity:0; pointer-events:none; transform:translateY(8px); transition:.2s ease}
    .scroll-top.show{opacity:1; pointer-events:auto; transform:translateY(0)}
    .reveal{opacity:0; transform:translateY(18px); transition:.55s ease}
    .reveal.show{opacity:1; transform:translateY(0)}
    .simple-list{margin:0; padding-left:18px; color:var(--muted); line-height:1.9}
    .mini-note{font-size:13px;color:var(--muted);line-height:1.7}
    .banner-row{display:grid; grid-template-columns:repeat(3,1fr); gap:12px}
    .banner-row img,.media-grid img{border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow2)}
    .media-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
    .table-note{padding:12px 14px; color:var(--muted); font-size:13px; border-top:1px solid var(--line); background:#fafcff}
    @media (max-width: 960px){
      .hero-grid,.grid-3,.grid-2,.stats,.steps,.footer-grid,.banner-row,.media-grid{grid-template-columns:1fr}
      .hero{padding-top:24px}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .nav.open .nav-links{
        display:flex; flex-direction:column; width:100%; padding-top:10px; align-items:flex-start
      }
      .nav{flex-wrap:wrap}
      .nav-actions{margin-left:auto}
      .hero-main{padding:24px}
      .form{grid-template-columns:1fr}
      .floating{right:12px; bottom:12px}
      .hidden-mobile{display:none}
    }