:root{
      --bg:#f6f7fb;
      --surface:#ffffff;
      --surface-2:#f2f5ff;
      --text:#172033;
      --muted:#5d687f;
      --line:#d9e0ef;
      --brand:#356dff;
      --brand-2:#8d5cff;
      --brand-3:#12b4a6;
      --accent:#ff8a5b;
      --shadow:0 18px 50px rgba(31,45,61,.10);
      --radius:22px;
      --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;
      color:var(--text);
      background:
        radial-gradient(900px 520px at 15% -10%, rgba(53,109,255,.14), transparent 55%),
        radial-gradient(700px 420px at 88% 10%, rgba(141,92,255,.12), transparent 50%),
        linear-gradient(180deg,#fbfcff 0%, #f6f7fb 42%, #f6f7fb 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: blur(16px);
      background: rgba(246,247,251,.84);
      border-bottom:1px solid rgba(217,224,239,.8);
    }
    .nav{
      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:44px; height:44px; object-fit:contain; border-radius:12px; background:#fff; box-shadow:0 8px 20px rgba(53,109,255,.10)}
    .brand b{display:block; font-size:18px; line-height:1.1}
    .brand span{display:block; font-size:12px; color:var(--muted); margin-top:3px}
    .menu-toggle{display:none; border:1px solid var(--line); background:#fff; color:var(--text); border-radius:14px; padding:10px 12px}
    nav ul{display:flex; flex-wrap:wrap; align-items:center; gap:8px 10px; list-style:none; padding:0; margin:0}
    nav a{display:inline-flex; align-items:center; padding:10px 12px; color:var(--muted); border-radius:999px; transition:.2s ease}
    nav a:hover{color:var(--text); background:#fff; box-shadow:0 8px 20px rgba(31,45,61,.06)}
    .nav-cta{display:inline-flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:1px solid transparent; border-radius:14px; padding:12px 16px;
      font-weight:700; cursor:pointer; transition:.22s ease; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2)); color:#fff; box-shadow:0 16px 30px rgba(53,109,255,.24)}
    .btn-primary:hover{transform:translateY(-1px); box-shadow:0 20px 34px rgba(53,109,255,.28)}
    .btn-ghost{background:#fff; border-color:var(--line); color:var(--text)}
    .btn-ghost:hover{border-color:#b9c8ea; transform:translateY(-1px)}
    main{padding:20px 0 0}
    section{padding:44px 0}
    .hero{padding:26px 0 40px}
    .hero-grid{display:grid; grid-template-columns:1.25fr .75fr; gap:22px; align-items:stretch}
    .hero-card, .panel, .card, .quote, .faq-item, .price-card, .metric, .form-card{
      background:rgba(255,255,255,.9);
      border:1px solid rgba(217,224,239,.92);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-card{padding:32px; position:relative; overflow:hidden}
    .hero-card::before,.hero-card::after{
      content:""; position:absolute; border-radius:999px; filter:blur(2px); pointer-events:none;
    }
    .hero-card::before{width:280px; height:280px; right:-110px; top:-120px; background:radial-gradient(circle, rgba(53,109,255,.18), transparent 68%)}
    .hero-card::after{width:220px; height:220px; left:-110px; bottom:-90px; background:radial-gradient(circle, rgba(18,180,166,.14), transparent 70%)}
    .eyebrow{display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px; background:linear-gradient(135deg, rgba(53,109,255,.10), rgba(141,92,255,.10)); color:#2f4db3; font-weight:700; font-size:13px}
    h1{font-size:clamp(32px, 5vw, 54px); line-height:1.08; margin:16px 0 14px}
    .lead{font-size:17px; line-height:1.85; color:var(--muted); max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:22px}
    .meta-row{display:flex; flex-wrap:wrap; gap:10px; margin-top:22px}
    .chip{padding:9px 12px; border-radius:999px; background:#f6f8ff; border:1px solid #e2e8fa; color:#39507c; font-size:13px}
    .side-stack{display:grid; gap:14px}
    .mini-card{padding:18px}
    .mini-card h3{margin:0 0 8px; font-size:16px}
    .mini-card p{margin:0; color:var(--muted); line-height:1.7; font-size:14px}
    .metrics{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:18px}
    .metric{padding:18px}
    .metric b{display:block; font-size:22px}
    .metric span{display:block; color:var(--muted); margin-top:6px; font-size:13px; line-height:1.5}
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:18px}
    .section-head h2{margin:0; font-size:28px}
    .section-head p{margin:0; color:var(--muted); line-height:1.7; max-width:58ch}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .card{padding:20px}
    .card h3{margin:0 0 10px; font-size:18px}
    .card p, .card li{color:var(--muted); line-height:1.75}
    .icon{
      width:42px; height:42px; border-radius:14px; display:grid; place-items:center;
      background:linear-gradient(135deg, rgba(53,109,255,.14), rgba(18,180,166,.14)); color:#2745b7; font-weight:800; margin-bottom:12px
    }
    .list{margin:0; padding-left:18px}
    .flow{display:grid; grid-template-columns:repeat(5,1fr); gap:14px}
    .step{padding:18px; position:relative}
    .step b{display:inline-flex; width:30px; height:30px; border-radius:50%; align-items:center; justify-content:center; background:#eef3ff; color:#2e57d8; margin-bottom:10px}
    .table-wrap{overflow:auto; border-radius:22px; border:1px solid var(--line); background:#fff; box-shadow:var(--shadow)}
    table{width:100%; border-collapse:collapse; min-width:860px}
    th,td{padding:16px 14px; border-bottom:1px solid #edf1f8; text-align:left; vertical-align:top}
    th{background:#f7f9ff; font-size:14px}
    td{color:var(--muted); line-height:1.7}
    .badge{display:inline-flex; padding:6px 10px; border-radius:999px; background:#effaf8; color:#187e72; font-weight:700; font-size:12px}
    .bad{background:#fff2f0; color:#c64c34}
    .compare-highlight{color:#17335b; font-weight:700}
    .tabs, .tag-cloud, .links-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:10px 12px; background:#fff; border:1px solid var(--line); border-radius:999px; color:#41506f}
    .panel{padding:22px}
    .dual{display:grid; grid-template-columns:1fr 1fr; gap:14px}
    .faq-list{display:grid; gap:12px}
    .faq-item{padding:0; overflow:hidden}
    .faq-q{width:100%; background:none; border:0; text-align:left; padding:18px 20px; font-size:16px; font-weight:700; color:var(--text); 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; border-top:1px solid transparent}
    .faq-a p{margin:0; padding:0 20px 18px; color:var(--muted); line-height:1.8}
    .faq-item.active .faq-a{max-height:200px; border-top-color:#eef1f8}
    .faq-item.active .faq-q span{transform:rotate(45deg)}
    .quotes{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .quote{padding:20px}
    .quote strong{display:block; margin-top:10px}
    .quote small{color:var(--muted)}
    .posts{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .post{padding:18px}
    .post a{display:block; color:#2541a5; font-weight:700; margin-top:10px}
    .images{display:grid; grid-template-columns:1.1fr .9fr; gap:14px}
    .images img{width:100%; border-radius:20px; border:1px solid var(--line); box-shadow:var(--shadow)}
    .form-card{padding:22px}
    form{display:grid; gap:14px}
    .form-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
    label{display:grid; gap:8px; font-size:14px; color:#35425f; font-weight:700}
    input, select, textarea{
      width:100%; border:1px solid #d8e0ef; background:#fff; color:var(--text);
      border-radius:14px; padding:13px 14px; font:inherit; outline:none;
    }
    textarea{min-height:120px; resize:vertical}
    input:focus, select:focus, textarea:focus{border-color:#7da0ff; box-shadow:0 0 0 4px rgba(53,109,255,.12)}
    .footer{
      padding:24px 0 30px; border-top:1px solid rgba(217,224,239,.85);
      color:#30425f;
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:20px}
    .footer a{color:#2745b7}
    .contact-box{display:grid; gap:10px}
    .floating{
      position:fixed; right:16px; bottom:18px; z-index:60; display:grid; gap:10px;
    }
    .floating a, .floating button{
      box-shadow:0 14px 26px rgba(31,45,61,.16);
    }
    .top-btn{border:0; background:linear-gradient(135deg,var(--brand-3),var(--brand)); color:#fff; border-radius:999px; width:48px; height:48px; display:grid; place-items:center; cursor:pointer}
    .chat{
      display:flex; align-items:center; gap:10px; background:#fff; border:1px solid var(--line); border-radius:999px; padding:12px 14px; color:var(--text); font-weight:700
    }
    .fade-in{opacity:0; transform:translateY(16px); transition:all .55s ease}
    .fade-in.show{opacity:1; transform:translateY(0)}
    .mobile-only{display:none}
    .home-link{font-weight:800}
    .sidenote{display:flex; gap:12px; align-items:center; padding:14px; border-radius:18px; background:linear-gradient(135deg, rgba(53,109,255,.08), rgba(18,180,166,.08)); border:1px solid #dce5f7}
    .sidenote img{width:90px; border-radius:16px}
    @media (max-width: 1024px){
      .hero-grid,.metrics,.grid-4,.grid-3,.flow,.quotes,.posts,.footer-grid,.dual,.images{grid-template-columns:1fr}
      .section-head{align-items:flex-start; flex-direction:column}
    }
    @media (max-width: 860px){
      nav{display:none}
      .menu-toggle{display:inline-flex}
      nav.open{display:block; position:absolute; left:0; right:0; top:74px; background:rgba(246,247,251,.98); border-bottom:1px solid var(--line); padding:12px 16px}
      nav.open ul{flex-direction:column; align-items:stretch}
      nav.open a{justify-content:center; background:#fff}
      .mobile-only{display:inline-flex}
      .form-grid{grid-template-columns:1fr}
      .hero-card{padding:24px}
      .metrics{margin-top:14px}
    }