:root{
      --bg:#fff8f1;
      --bg2:#f8fbff;
      --card:#ffffff;
      --card2:#fff4e8;
      --text:#233042;
      --muted:#617082;
      --line:#e8dccc;
      --brand:#ff6b6b;
      --brand2:#ffb347;
      --brand3:#6c7cff;
      --shadow:0 18px 50px rgba(70, 54, 32, .08);
      --radius:22px;
      --radius2:16px;
      --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(255,179,71,.20), transparent 30%),
        radial-gradient(circle at top right, rgba(108,124,255,.14), transparent 26%),
        linear-gradient(180deg, var(--bg), #fff 34%, #fffaf5 100%);
    }
    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:50;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(255,250,244,.82);
      border-bottom:1px solid rgba(232,220,204,.75);
    }
    .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 .ai-page-logo{width:42px;height:42px;border-radius:12px;object-fit:contain;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:0 8px 20px rgba(0,0,0,.05)}
    .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}
    .navlinks{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .navlinks a{font-size:14px;color:#344355;padding:8px 10px;border-radius:10px}
    .navlinks a:hover{background:#fff0df;color:#162231}
    .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;border-radius:999px;
      padding:12px 18px;font-weight:700;transition:.25s ease;
      cursor:pointer;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 28px rgba(255,107,107,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,107,107,.28)}
    .btn-ghost{background:#fff;color:#243042;border-color:var(--line)}
    .btn-ghost:hover{border-color:#d5c4ae;transform:translateY(-1px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer}
    .hero{padding:42px 0 22px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.soft-card,.review-card,.case-card,.faq-item,.form-card,.compare-card,.article-card,.time-card,.price-card{
      background:var(--card);border:1px solid rgba(232,220,204,.9);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-main{padding:34px;position:relative;overflow:hidden;background:
      linear-gradient(180deg, rgba(255,255,255,.98), rgba(255,248,241,.96));
    }
    .hero-main::before,.hero-main::after{
      content:"";position:absolute;border-radius:50%;pointer-events:none
    }
    .hero-main::before{width:260px;height:260px;right:-90px;top:-90px;background:radial-gradient(circle, rgba(255,179,71,.20), transparent 65%)}
    .hero-main::after{width:200px;height:200px;right:40px;bottom:-90px;background:radial-gradient(circle, rgba(108,124,255,.12), transparent 64%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff4e8;border:1px solid #f1dcc2;color:#7c4a1f;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(32px,4.6vw,56px);line-height:1.05;letter-spacing:-.03em}
    .lead{font-size:16px;line-height:1.85;color:var(--muted);max-width:64ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 20px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px}
    .point{padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .point strong{display:block;font-size:18px;margin-bottom:6px}
    .point span{display:block;font-size:13px;color:var(--muted);line-height:1.6}
    .hero-side{padding:20px;background:linear-gradient(180deg,#fff, #fff6ed)}
    .mini-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .metric{padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .metric b{display:block;font-size:24px;line-height:1;margin-bottom:6px}
    .metric small{color:var(--muted);line-height:1.5}
    .trust-box{margin-top:14px;padding:16px;border-radius:18px;background:linear-gradient(135deg,#fff4e8,#f3f7ff);border:1px solid #eddcc5}
    .trust-box h3{margin:0 0 10px;font-size:16px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#415064}
    .section{padding:18px 0}
    .section-card{padding:26px}
    .section-head{display:flex;align-items:flex-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);max-width:68ch;line-height:1.75}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .soft-card,.compare-card,.article-card,.case-card,.review-card,.time-card,.price-card{padding:20px}
    .soft-card h3,.case-card h3,.review-card h3,.article-card h3,.time-card h3,.price-card h3{margin:0 0 10px;font-size:18px}
    .soft-card p,.case-card p,.review-card p,.article-card p,.time-card p,.price-card p{margin:0;color:var(--muted);line-height:1.75}
    .icon-badge{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#fff0df,#ffe4ef);margin-bottom:14px;font-size:22px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#fff7ef);border:1px solid var(--line);position:relative}
    .step span{display:inline-flex;width:34px;height:34px;border-radius:10px;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand3),#8fd3ff);color:#fff;font-weight:800;margin-bottom:12px}
    .step h3{margin:0 0 8px;font-size:17px}
    .step p{margin:0;color:var(--muted);line-height:1.7}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px}
    table{width:100%;border-collapse:collapse;min-width:840px;background:#fff}
    th,td{padding:15px 16px;border-bottom:1px solid #eee5d9;text-align:left;vertical-align:top}
    th{background:#fff7ee;font-size:14px}
    td{font-size:14px;color:#364355;line-height:1.65}
    .rating{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff0df;color:#8c4e17;font-weight:700}
    .compare-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .stats-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:16px}
    .stats-row .metric{background:#fff7ef}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:80px 1fr;gap:16px;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .timeline-item b{color:#ff6b6b;font-size:18px}
    .timeline-item p{margin:6px 0 0;color:var(--muted);line-height:1.7}
    .review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
    .stars{color:#f0a21d;letter-spacing:2px}
    .case-grid,.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .case-card .pill{display:inline-flex;padding:7px 11px;border-radius:999px;background:#f4f7ff;color:#4f62c6;font-size:12px;font-weight:700;margin-bottom:12px}
    .price-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .price-box{display:grid;gap:12px}
    .price-item{display:flex;justify-content:space-between;gap:12px;padding:14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .price-item strong{display:block}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;background:none;border:0;display:flex;align-items:center;justify-content:space-between;gap:16px;
      padding:18px 20px;font-size:16px;font-weight:700;color:var(--text);cursor:pointer;text-align:left
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
    .faq-a p{margin:0;padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{max-height:220px}
    .faq-item.open .faq-q .arrow{transform:rotate(180deg)}
    .arrow{transition:transform .25s ease}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .form-card{padding:22px}
    .form-field{display:grid;gap:8px}
    .form-field label{font-size:14px;font-weight:700}
    .form-field input,.form-field select,.form-field textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid #dcccbb;background:#fff;color:var(--text);
      outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    .form-field textarea{min-height:120px;resize:vertical}
    .form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:#ffb347;box-shadow:0 0 0 4px rgba(255,179,71,.14)}
    .form-full{grid-column:1 / -1}
    .footer{
      margin-top:12px;padding:26px 0 30px;border-top:1px solid rgba(232,220,204,.8);background:#fffaf4;color:#334255
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
    .footer h3{margin:0 0 12px;font-size:16px}
    .footer a{color:#344355}
    .footer a:hover{color:#ff6b6b}
    .footer p,.footer li{color:#607083;line-height:1.8;margin:0}
    .footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
    .copyright{margin-top:18px;padding-top:18px;border-top:1px solid rgba(232,220,204,.85);font-size:13px;color:#6a798b}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{
      width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;
      display:grid;place-items:center;box-shadow:0 12px 28px rgba(22,32,48,.12);cursor:pointer
    }
    .floating a:hover,.floating button:hover{transform:translateY(-2px)}
    .mobile-nav{display:none}
    .kefu-panel{
      position:fixed;right:16px;bottom:76px;width:280px;background:#fff;border:1px solid var(--line);
      border-radius:20px;box-shadow:var(--shadow);padding:16px;display:none;z-index:61
    }
    .kefu-panel.open{display:block}
    .kefu-panel h3{margin:0 0 10px;font-size:16px}
    .kefu-panel p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .kefu-panel img{width:100%;border-radius:14px;border:1px solid var(--line);margin-top:12px}
    .reveal{opacity:0;transform:translateY(18px);transition:.65s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.compare-grid,.price-grid,.footer-grid,.grid-4,.grid-3,.review-grid,.case-grid,.article-grid,.steps,.form-grid{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .navlinks,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .mobile-nav{display:none;padding:0 0 16px}
      .mobile-nav.open{display:block}
      .mobile-nav .panel{padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line);display:grid;gap:10px}
      .mobile-nav a{padding:10px 12px;border-radius:12px;background:#fff7ef}
      .hero,.section{padding:14px 0}
      .hero-main{padding:22px}
      h1{font-size:30px}
      .section-card{padding:18px}
      .hero-grid,.compare-grid,.price-grid,.footer-grid,.grid-4,.grid-3,.review-grid,.case-grid,.article-grid,.steps,.form-grid{grid-template-columns:1fr}
      .stats-row{grid-template-columns:1fr}
      .mini-metrics{grid-template-columns:1fr 1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .timeline-item{grid-template-columns:1fr}
      .floating{right:12px;bottom:12px}
      .kefu-panel{right:12px;left:12px;width:auto}
    }