:root{
      --bg:#f7f6f2;
      --panel:#ffffff;
      --panel-2:#fff7ef;
      --text:#1f2937;
      --muted:#5b6472;
      --line:#e7e0d8;
      --brand:#ff5a1f;
      --brand-2:#ffb31a;
      --brand-3:#ff2d7a;
      --ok:#10b981;
      --shadow:0 18px 50px rgba(38, 28, 19, .10);
      --shadow-soft:0 10px 30px rgba(38, 28, 19, .08);
      --radius:22px;
      --radius-sm:16px;
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -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(255,90,31,.12), transparent 26%),
        radial-gradient(circle at 85% 10%, rgba(255,45,122,.12), transparent 22%),
        linear-gradient(180deg, #fffdf9 0%, #f7f6f2 45%, #f5f3ee 100%);
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky; top:0; z-index:60;
      backdrop-filter: blur(14px);
      background:rgba(255,255,255,.84);
      border-bottom:1px solid rgba(231,224,216,.9);
    }
    .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 .ai-page-logo{width:40px;height:40px;object-fit:contain;border-radius:10px;background:#fff;box-shadow:0 8px 20px rgba(0,0,0,.06)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:18px;line-height:1.1}
    .brand-text span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .nav-links{display:flex; align-items:center; gap:16px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px;color:#374151;padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{background:#fff1e8;color:#c2410c}
    .nav-actions{display:flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:1px solid transparent; border-radius:999px; padding:12px 18px;
      font-weight:700; font-size:14px; transition:.22s ease; cursor:pointer; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg, var(--brand), var(--brand-3)); color:#fff; box-shadow:0 14px 28px rgba(255,90,31,.25)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 18px 34px rgba(255,90,31,.32)}
    .btn-ghost{background:#fff; color:#b42318; border-color:#ffd7c8}
    .btn-ghost:hover{background:#fff4ed}
    .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:#374151;margin:4px auto;border-radius:3px}
    .hero{
      padding:38px 0 18px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.12fr .88fr; gap:22px; align-items:stretch;
    }
    .hero-main, .hero-side, .card, .panel, .table-wrap, .faq-item, .form-wrap{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(231,224,216,.92);
      box-shadow:var(--shadow-soft);
      border-radius:var(--radius);
    }
    .hero-main{padding:34px; position:relative; overflow:hidden}
    .hero-main::before,.hero-main::after{
      content:""; position:absolute; border-radius:50%; pointer-events:none;
      filter:blur(10px); opacity:.95;
    }
    .hero-main::before{width:240px;height:240px; right:-90px; top:-95px; background:radial-gradient(circle, rgba(255,179,26,.40), rgba(255,179,26,.03) 68%, transparent 70%)}
    .hero-main::after{width:180px;height:180px; left:-70px; bottom:-70px; background:radial-gradient(circle, rgba(255,45,122,.22), rgba(255,45,122,.03) 70%, transparent 72%)}
    .badge{
      display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px;
      background:#fff2e8; color:#b54708; font-size:13px; font-weight:700;
      border:1px solid #ffd8c8;
    }
    h1{font-size:clamp(30px,5vw,54px); line-height:1.05; margin:18px 0 14px; letter-spacing:-.03em}
    .lead{font-size:16px; line-height:1.8; color:var(--muted); max-width:60ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin:22px 0 20px}
    .hero-points{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px; margin-top:18px}
    .mini{
      padding:14px 14px 16px; background:linear-gradient(180deg, #fff, #fff8f2);
      border:1px solid #f0e1d5; border-radius:18px;
    }
    .mini strong{display:block; font-size:20px}
    .mini span{display:block; font-size:13px; color:var(--muted); margin-top:6px; line-height:1.5}
    .hero-side{padding:22px}
    .side-grid{display:grid; gap:14px}
    .side-box{
      padding:18px; border-radius:18px; background:linear-gradient(135deg, #fff, #fff4eb); border:1px solid #f0e1d5
    }
    .side-box h3{margin:0 0 10px; font-size:17px}
    .side-box p,.side-box li{margin:0; color:var(--muted); line-height:1.7; font-size:14px}
    .side-list{padding-left:18px; margin:0; display:grid; gap:8px}
    section{padding:20px 0}
    .section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:16px; margin-bottom:14px}
    .section-head h2{margin:0; font-size:28px; line-height:1.15}
    .section-head p{margin:0; color:var(--muted); max-width:64ch; line-height:1.7}
    .grid-4{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px}
    .grid-3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .grid-2{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    .card{padding:20px}
    .card h3{margin:0 0 10px; font-size:18px}
    .card p,.card li{color:var(--muted); line-height:1.72}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:9px 12px; border-radius:999px; background:#fff; border:1px solid #f0e1d5; color:#3f3f46; font-size:13px}
    .timeline{display:grid; gap:12px}
    .step{
      display:grid; grid-template-columns:56px 1fr; gap:14px; align-items:start;
      padding:18px; border-radius:20px; background:linear-gradient(180deg,#fff,#fff9f4); border:1px solid #f0e1d5;
    }
    .step-num{
      width:56px;height:56px;border-radius:18px;display:grid;place-items:center;
      background:linear-gradient(135deg, var(--brand), var(--brand-2)); color:#fff; font-size:20px; font-weight:800;
      box-shadow:0 12px 24px rgba(255,90,31,.2);
    }
    .step h3{margin:2px 0 8px}
    .scroll-x{overflow:auto; -webkit-overflow-scrolling:touch}
    table{width:100%; border-collapse:separate; border-spacing:0; min-width:820px}
    th,td{padding:15px 14px; text-align:left; border-bottom:1px solid #eee2d7; vertical-align:top}
    th{background:#fff7ef; color:#7c2d12; font-size:14px}
    tr:hover td{background:#fffdf9}
    .rating{display:flex; align-items:center; gap:8px; flex-wrap:wrap}
    .stars{color:#ff9f0a; letter-spacing:2px; font-size:18px}
    .review{display:flex; flex-direction:column; gap:10px}
    .review-top{display:flex; align-items:center; justify-content:space-between; gap:10px}
    .avatar{
      width:44px;height:44px;border-radius:50%; display:grid; place-items:center; font-weight:800; color:#fff;
      background:linear-gradient(135deg, var(--brand-3), var(--brand));
    }
    .review .who{display:flex; align-items:center; gap:12px}
    .review .meta strong{display:block}
    .review .meta span{display:block; font-size:13px; color:var(--muted); margin-top:3px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%; display:flex; align-items:center; justify-content:space-between; gap:12px;
      padding:18px 18px; background:transparent; border:0; cursor:pointer; text-align:left; font-size:16px; font-weight:700; color:#1f2937
    }
    .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease; padding:0 18px}
    .faq-a p{margin:0; padding:0 0 18px; color:var(--muted); line-height:1.75}
    .faq-item.open .faq-a{max-height:220px}
    .faq-item.open .faq-q .chev{transform:rotate(180deg)}
    .chev{transition:transform .25s ease; color:#b45309}
    .form-wrap{padding:22px}
    form{display:grid; gap:14px}
    .form-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    label{display:grid; gap:8px; font-size:14px; font-weight:700}
    input,select,textarea{
      width:100%; border:1px solid #e8ddd2; border-radius:14px; padding:13px 14px; font:inherit; color:var(--text);
      background:#fff; outline:none; transition:border-color .2s ease, box-shadow .2s ease;
    }
    input:focus,select:focus,textarea:focus{border-color:#ff9f7a; box-shadow:0 0 0 4px rgba(255,90,31,.08)}
    textarea{min-height:126px; resize:vertical}
    .submit-row{display:flex; flex-wrap:wrap; align-items:center; gap:12px}
    .muted{color:var(--muted)}
    .footer{
      margin-top:8px; padding:26px 0 30px; border-top:1px solid rgba(231,224,216,.9);
      background:rgba(255,255,255,.76);
      color:#374151;
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr 1fr; gap:16px}
    .footer h3{margin:0 0 12px; font-size:17px}
    .footer a{color:#b42318}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a{padding:8px 12px; border-radius:999px; background:#fff; border:1px solid #efd9cd}
    .copy{margin-top:18px; padding-top:16px; border-top:1px solid #eadfd4; font-size:13px; color:#6b7280}
    .float-tools{
      position:fixed; right:16px; bottom:16px; z-index:80; display:grid; gap:10px;
    }
    .tool{
      width:48px;height:48px;border-radius:16px; display:grid; place-items:center;
      background:linear-gradient(135deg, var(--brand), var(--brand-3)); color:#fff; box-shadow:var(--shadow);
      border:0; cursor:pointer;
    }
    .tool.secondary{background:#fff;color:#b42318;border:1px solid #f0d8ca}
    .service-net{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px}
    .accent{
      background:linear-gradient(135deg, rgba(255,90,31,.08), rgba(255,179,26,.12));
      border:1px solid rgba(255,90,31,.12);
    }
    .pill-list{display:flex; flex-wrap:wrap; gap:10px}
    .pill{padding:8px 11px;border-radius:999px;background:#fff;border:1px solid #f0e1d5;font-size:13px;color:#374151}
    .article-list{display:grid; gap:12px}
    .article{
      display:flex; justify-content:space-between; gap:12px; padding:16px 18px; background:#fff; border:1px solid #efdfd4; border-radius:18px;
    }
    .article strong{display:block; margin-bottom:5px}
    .article span{display:block; color:var(--muted); font-size:13px; line-height:1.6}
    .toggle-panel{display:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.service-net,.footer-grid{grid-template-columns:1fr 1fr}
      .grid-3{grid-template-columns:1fr 1fr}
      .hero-main{padding:26px}
    }
    @media (max-width: 760px){
      .container{width:min(var(--max), calc(100% - 22px))}
      .nav-links,.nav-actions .btn-ghost{display:none}
      .menu-btn{display:inline-grid;place-items:center}
      .hero-grid,.grid-4,.grid-3,.grid-2,.form-grid,.service-net,.footer-grid{grid-template-columns:1fr}
      .hero{padding-top:18px}
      h1{font-size:34px}
      .hero-points{grid-template-columns:1fr}
      .section-head{flex-direction:column; align-items:flex-start}
      .topbar.open .nav-links{
        display:flex; position:absolute; left:16px; right:16px; top:68px; padding:14px;
        background:#fff; border:1px solid var(--line); border-radius:18px; box-shadow:var(--shadow); flex-direction:column; align-items:flex-start;
      }
      .topbar.open .nav-actions .btn-ghost{display:inline-flex}
      .nav{position:relative}
      .article{flex-direction:column}
    }
    .reveal{opacity:0; transform:translateY(14px); transition:opacity .55s ease, transform .55s ease}
    .reveal.in{opacity:1; transform:translateY(0)}
    .hover-lift{transition:transform .22s ease, box-shadow .22s ease}
    .hover-lift:hover{transform:translateY(-4px); box-shadow:var(--shadow)}