:root{
      --bg:#f7f6f1;
      --panel:#ffffff;
      --panel-2:#fff5ef;
      --text:#1f2937;
      --muted:#5b6472;
      --line:#e8e2d8;
      --brand:#ff5b2e;
      --brand-2:#7c3aed;
      --brand-3:#0f766e;
      --shadow:0 18px 50px rgba(31,41,55,.08);
      --radius:20px;
      --radius-sm:14px;
      --max: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(255,91,46,.12), transparent 26%),
        radial-gradient(circle at top right, rgba(124,58,237,.12), transparent 22%),
        linear-gradient(180deg, #fff 0%, var(--bg) 18%, #f8f4ee 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky; top:0; z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(232,226,216,.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 .ai-page-logo{width:42px; height:42px; object-fit:contain; flex:0 0 auto}
    .brand-text{display:flex; flex-direction:column; min-width:0}
    .brand-text strong{font-size:18px; line-height:1.1}
    .brand-text span{font-size:12px; color:var(--muted); margin-top:3px}
    .nav-links{display:flex; align-items:center; gap:18px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px; color:#394150; padding:8px 10px; border-radius:999px; transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{background:#fff0ea; color:#c2410c}
    .nav-cta{display:flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:1px solid transparent; padding:12px 18px; border-radius:999px;
      font-weight:700; font-size:14px; transition:.25s ease; cursor:pointer;
      box-shadow:none; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ff8a00); color:#fff; box-shadow:0 14px 24px rgba(255,91,46,.22)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 18px 28px rgba(255,91,46,.28)}
    .btn-ghost{background:#fff; color:var(--text); border-color:var(--line)}
    .btn-ghost:hover{border-color:#ffcab9; transform:translateY(-2px)}
    .menu-btn{display:none; background:#fff; border:1px solid var(--line); width:44px; height:44px; border-radius:14px}
    .menu-btn span{display:block; width:18px; height:2px; background:#2f3542; margin:4px auto; border-radius:2px}
    main{overflow:hidden}
    .hero{padding:34px 0 20px}
    .hero-grid{display:grid; grid-template-columns:1.15fr .85fr; gap:22px; align-items:stretch}
    .hero-card{
      position:relative; overflow:hidden; border:1px solid rgba(255,255,255,.7);
      background:linear-gradient(135deg,#fff 0%,#fff8f4 52%,#f4edff 100%);
      border-radius:28px; box-shadow:var(--shadow); padding:34px;
    }
    .hero-card::before,.hero-card::after{
      content:""; position:absolute; border-radius:50%; pointer-events:none;
      background:radial-gradient(circle, rgba(255,91,46,.18), transparent 60%);
      width:320px; height:320px; right:-120px; top:-110px;
    }
    .hero-card::after{
      width:220px; height:220px; right:40px; top:auto; bottom:-110px;
      background:radial-gradient(circle, rgba(124,58,237,.14), transparent 60%);
    }
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px;
      background:#fff; border:1px solid rgba(255,91,46,.16); color:#b45309; font-size:13px; font-weight:700;
    }
    h1{font-size:clamp(30px, 4.8vw, 54px); line-height:1.08; margin:16px 0 14px; letter-spacing:-.03em}
    .lead{font-size:16px; line-height:1.75; color:var(--muted); max-width:58ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin:22px 0 22px}
    .hero-points{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:24px}
    .point{
      background:rgba(255,255,255,.82); border:1px solid rgba(232,226,216,.95);
      border-radius:18px; padding:16px; min-height:98px;
    }
    .point strong{display:block; font-size:17px; margin-bottom:6px}
    .point span{font-size:13px; color:var(--muted); line-height:1.55}
    .hero-side{
      display:grid; gap:16px;
      grid-template-rows:auto auto 1fr;
    }
    .mini-panel{
      background:var(--panel); border:1px solid var(--line); border-radius:24px; box-shadow:var(--shadow);
      padding:22px;
    }
    .mini-panel h2{margin:0 0 8px; font-size:20px}
    .stat-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:12px; margin-top:14px}
    .stat{
      background:linear-gradient(180deg,#fff,#fff7f1);
      border:1px solid #f1e2d9; border-radius:18px; padding:16px;
    }
    .stat b{display:block; font-size:24px; color:#b91c1c; margin-bottom:4px}
    .stat small{color:var(--muted); line-height:1.4}
    .qr-box{
      display:grid; grid-template-columns:110px 1fr; gap:14px; align-items:center;
      background:linear-gradient(135deg,#fff,#fff5ee);
    }
    .qr-box img{width:110px; aspect-ratio:1/1; object-fit:cover; border-radius:16px; border:1px solid var(--line)}
    .qr-box p{margin:6px 0 0; color:var(--muted); line-height:1.6; font-size:14px}
    .section{padding:18px 0}
    .section-head{display:flex; justify-content:space-between; align-items:end; gap:12px; margin-bottom:16px}
    .section-head h2{margin:0; font-size:28px}
    .section-head p{margin:0; color:var(--muted); line-height:1.6}
    .grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .card{
      background:var(--panel); border:1px solid var(--line); border-radius:24px; padding:22px;
      box-shadow:0 10px 28px rgba(31,41,55,.05); transition:.25s ease;
    }
    .card:hover{transform:translateY(-4px); box-shadow:0 20px 34px rgba(31,41,55,.09)}
    .card h3{margin:0 0 10px; font-size:18px}
    .card p{margin:0; color:var(--muted); line-height:1.7}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:10px 14px; background:#fff; border:1px solid var(--line); border-radius:999px; color:#3a4453; font-size:13px}
    .soft{background:linear-gradient(180deg,#fff, #fff8f2)}
    .workflow{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .step{position:relative; padding-top:26px}
    .step .num{
      position:absolute; top:0; left:22px; width:38px; height:38px; border-radius:50%;
      display:grid; place-items:center; color:#fff; font-weight:800;
      background:linear-gradient(135deg,var(--brand),#ff8a00);
      box-shadow:0 10px 16px rgba(255,91,46,.22);
    }
    .table-wrap{overflow:auto; border-radius:24px; border:1px solid var(--line); background:#fff; box-shadow:var(--shadow)}
    table{width:100%; border-collapse:collapse; min-width:860px}
    th,td{padding:16px 18px; border-bottom:1px solid #eee7dc; text-align:left; vertical-align:top}
    th{background:#fff7f1; font-size:14px}
    td{color:#3b4250; font-size:14px; line-height:1.65}
    .score{
      display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-top:10px;
      color:#b45309; font-weight:800;
    }
    .stars{letter-spacing:2px; color:#ff8a00}
    .dual{
      display:grid; grid-template-columns:1fr 1fr; gap:14px;
    }
    .review{
      display:flex; flex-direction:column; gap:12px; height:100%;
    }
    .review .meta{display:flex; justify-content:space-between; gap:10px; align-items:center}
    .avatar{
      width:44px; height:44px; border-radius:50%;
      display:grid; place-items:center; font-weight:800; color:#fff;
      background:linear-gradient(135deg,var(--brand-2),#ff5b2e);
    }
    .review p{margin:0; color:var(--muted); line-height:1.7}
    .review small{color:#8a93a3}
    .faq{display:grid; gap:12px}
    details{
      background:#fff; border:1px solid var(--line); border-radius:18px; box-shadow:0 8px 20px rgba(31,41,55,.04); overflow:hidden
    }
    summary{list-style:none; cursor:pointer; padding:18px 20px; font-weight:700; display:flex; justify-content:space-between; gap:16px}
    summary::-webkit-details-marker{display:none}
    details p{padding:0 20px 18px; margin:0; color:var(--muted); line-height:1.75}
    .columns-2{display:grid; grid-template-columns:1.1fr .9fr; gap:14px; align-items:start}
    .articles{display:grid; gap:12px}
    .article{
      display:flex; justify-content:space-between; gap:16px; align-items:center;
      padding:16px 18px; border:1px solid var(--line); background:#fff; border-radius:18px;
    }
    .article span{color:var(--muted); font-size:13px}
    .article strong{display:block; margin-bottom:6px}
    .form{
      display:grid; grid-template-columns:repeat(2,1fr); gap:12px;
    }
    .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 #dcd4c7; background:#fff; color:var(--text);
      border-radius:14px; padding:13px 14px; font:inherit; outline:none; transition:.2s ease;
    }
    textarea{min-height:120px; resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#ff8a00; box-shadow:0 0 0 4px rgba(255,138,0,.12)}
    .footer{
      margin-top:16px; padding:30px 0 22px; border-top:1px solid rgba(232,226,216,.95);
      background:linear-gradient(180deg, rgba(255,255,255,.7), rgba(255,250,245,.95));
    }
    .footer-grid{display:grid; grid-template-columns:1.3fr .7fr; gap:20px}
    .footer p,.footer a,.footer li{color:#44505f}
    .footer h3{margin:0 0 10px}
    .links{display:flex; flex-wrap:wrap; gap:10px}
    .links a{padding:9px 12px; border-radius:999px; border:1px solid var(--line); background:#fff}
    .copyright{margin-top:18px; color:#667085; font-size:13px; line-height:1.6}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:60; display:grid; gap:10px;
    }
    .float-btn{
      width:52px; height:52px; border-radius:16px; display:grid; place-items:center; color:#fff;
      background:linear-gradient(135deg,var(--brand),#ff8a00); box-shadow:0 16px 30px rgba(255,91,46,.25);
      border:none; cursor:pointer;
    }
    .float-btn.secondary{background:linear-gradient(135deg,#2563eb,#7c3aed)}
    .back-top{opacity:0; transform:translateY(10px); pointer-events:none; transition:.25s ease}
    .back-top.show{opacity:1; transform:translateY(0); pointer-events:auto}
    .mobile-menu{display:none}
    .badge-row{display:flex; flex-wrap:wrap; gap:10px; margin-top:18px}
    .badge{padding:8px 12px; border-radius:999px; background:#fff; border:1px solid var(--line); font-size:13px; color:#465060}
    .timeline{display:grid; gap:14px}
    .timeline-item{
      display:grid; grid-template-columns:120px 1fr; gap:14px; align-items:start;
      background:#fff; border:1px solid var(--line); border-radius:18px; padding:16px 18px;
    }
    .timeline-item strong{color:#b45309}
    .timeline-item p{margin:4px 0 0; color:var(--muted); line-height:1.65}
    .media-row{display:grid; grid-template-columns:1fr 1fr; gap:14px}
    .media-row img{border-radius:20px; border:1px solid var(--line); box-shadow:var(--shadow)}
    .form-card{background:linear-gradient(180deg,#fff, #fff7f2)}
    .subtle{color:#6a7280}
    @media (max-width: 1080px){
      .hero-grid,.columns-2,.footer-grid,.dual{grid-template-columns:1fr}
      .grid-4,.grid-3,.workflow,.hero-points,.stat-grid,.media-row{grid-template-columns:repeat(2,1fr)}
      .nav-links,.nav-cta{display:none}
      .menu-btn{display:inline-grid; place-items:center}
      .mobile-menu{display:none; padding:0 0 16px}
      .mobile-menu.open{display:block}
      .mobile-menu .nav-links{display:flex; justify-content:flex-start; gap:8px}
      .mobile-menu .nav-cta{display:flex; margin-top:12px}
    }
    @media (max-width: 720px){
      .container{width:min(var(--max), calc(100% - 22px))}
      .hero-card,.mini-panel,.card{padding:18px}
      .section-head{flex-direction:column; align-items:flex-start}
      .grid-4,.grid-3,.workflow,.hero-points,.stat-grid,.media-row,.form{grid-template-columns:1fr}
      .timeline-item{grid-template-columns:1fr}
      .qr-box{grid-template-columns:1fr; text-align:center}
      .qr-box img{margin:0 auto}
      .hero{padding-top:18px}
      .hero-card{border-radius:22px}
      .btn{width:100%}
      .hero-actions{flex-direction:column}
    }
    .reveal{opacity:0; transform:translateY(18px); transition:.7s ease}
    .reveal.show{opacity:1; transform:none}