:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#fdf7ef;
      --text:#183044;
      --muted:#5f6f82;
      --line:#e6ebf2;
      --brand:#ff7a18;
      --brand-2:#ffb347;
      --brand-3:#5b8cff;
      --shadow:0 18px 50px rgba(25,45,75,.08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{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",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,123,24,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(91,140,255,.11), transparent 25%),
        linear-gradient(180deg,#ffffff 0%, #f8fbff 36%, #f5f7fc 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;background:rgba(246,248,252,.82);backdrop-filter: blur(12px); border-bottom:1px solid rgba(230,235,242,.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;border-radius:12px;background:#fff;padding:5px;box-shadow:0 8px 20px rgba(0,0,0,.06)}
    .brand strong{display:block;font-size:1rem;line-height:1.1}
    .brand span{display:block;font-size:.82rem;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;align-items:center;gap:18px;list-style:none;padding:0;margin:0;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:.95rem;color:#34485f;padding:8px 0;position:relative}
    nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-3));transform:scaleX(0);transform-origin:left;transition:.25s}
    nav a:hover::after{transform:scaleX(1)}
    .hero{padding:42px 0 22px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-main,.hero-side,.card,.section-box,.faq-item,.comment,.article-item,.timeline-item,.price-box{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:30px;position:relative;overflow:hidden;background:
      linear-gradient(135deg, rgba(255,122,24,.12), rgba(91,140,255,.10)),
      linear-gradient(180deg,#fff, #fff);
    }
    .hero-main::before,.hero-main::after{content:"";position:absolute;border-radius:50%;filter:blur(10px);pointer-events:none}
    .hero-main::before{width:220px;height:220px;right:-70px;top:-70px;background:radial-gradient(circle, rgba(255,179,71,.45), transparent 68%)}
    .hero-main::after{width:180px;height:180px;left:36%;bottom:-80px;background:radial-gradient(circle, rgba(91,140,255,.22), transparent 68%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,122,24,.10);color:#a14f00;font-weight:600;font-size:.88rem}
    h1{font-size:clamp(2rem,4vw,3.4rem);line-height:1.06;margin:16px 0 14px;letter-spacing:-.03em}
    .lead{font-size:1.04rem;line-height:1.85;color:var(--muted);max-width:58ch;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:12px 18px;font-weight:700;border:1px solid transparent;transition:.25s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 28px rgba(255,122,24,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 18px 30px rgba(25,45,75,.12)}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .stat{background:rgba(255,255,255,.74);border:1px solid rgba(230,235,242,.85);border-radius:18px;padding:16px}
    .stat b{display:block;font-size:1.3rem;margin-bottom:4px}
    .stat span{font-size:.9rem;color:var(--muted);line-height:1.5}
    .hero-side{padding:18px;display:grid;gap:14px;align-content:start}
    .mini-panel{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff7ef,#ffffff);border:1px solid #f1e2cf}
    .mini-panel h3{margin:0 0 8px;font-size:1.02rem}
    .mini-panel p{margin:0;color:var(--muted);line-height:1.7;font-size:.95rem}
    .badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .badge{padding:8px 10px;border-radius:999px;background:#f3f7ff;border:1px solid #d9e5ff;color:#27415f;font-size:.86rem}
    main{padding:12px 0 28px}
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:1.7rem}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.7}
    .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{padding:20px}
    .card h3{margin:0 0 10px;font-size:1.08rem}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .card ul{margin:0;padding-left:18px}
    .feature{display:flex;gap:12px}
    .feature .icon{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,rgba(255,122,24,.13),rgba(91,140,255,.12));display:grid;place-items:center;font-weight:800;color:#304d70;flex:0 0 auto}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;border-radius:20px;background:linear-gradient(180deg,#ffffff,#fafcff);border:1px solid var(--line);position:relative}
    .step b{display:inline-flex;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;align-items:center;justify-content:center;margin-bottom:12px}
    .step h3{margin:0 0 8px}
    .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:760px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f8fbff;font-size:.95rem}
    td{color:var(--muted);line-height:1.7}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#34485f}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .timeline-item{padding:18px}
    .timeline-item .time{color:#9a5b12;font-weight:700;font-size:.88rem}
    .timeline-item h3{margin:8px 0 8px}
    .price-box{padding:20px;background:linear-gradient(180deg,#fff,#fff9f1)}
    .price{font-size:2rem;font-weight:800;color:#d45f00}
    .price small{font-size:.95rem;color:var(--muted);font-weight:600}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .comment{padding:20px}
    .comment .role{font-size:.86rem;color:#a15b10;font-weight:700;margin-bottom:8px}
    .comment p{margin:0;color:var(--text);line-height:1.8}
    .comment .name{margin-top:14px;color:var(--muted);font-size:.92rem}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;background:#fff;border:0;padding:18px 20px;font-size:1rem;font-weight:700;color:var(--text);display:flex;justify-content:space-between;align-items:center;cursor:pointer}
    .faq-a{padding:0 20px 18px;color:var(--muted);line-height:1.8;display:none}
    .faq-item.active .faq-a{display:block}
    .faq-item.active .arrow{transform:rotate(180deg)}
    .arrow{transition:.25s}
    .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .article-item{padding:18px}
    .article-item a{display:block;font-weight:700;color:var(--text);margin-bottom:8px}
    .article-item p{margin:0;color:var(--muted);line-height:1.7}
    .form-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    form{display:grid;gap:12px}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font:inherit;color:var(--text);background:#fff;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#ffb347;box-shadow:0 0 0 4px rgba(255,179,71,.14)}
    footer{padding:24px 0 30px;border-top:1px solid var(--line);background:#f8fbff;color:var(--text)}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:16px}
    .footer-grid h3{margin-top:0}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;color:#34485f}
    .footer-note{margin-top:14px;color:var(--muted);line-height:1.75}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:0 12px 24px rgba(0,0,0,.12);cursor:pointer}
    .social-box{display:grid;gap:12px}
    .qr{width:140px;border-radius:16px;border:1px solid var(--line)}
    .muted{color:var(--muted)}
    .reveal{opacity:0;transform:translateY(18px);transition:.7s ease}
    .reveal.show{opacity:1;transform:none}
    .mobile-panel{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.workflow,.timeline,.reviews,.form-wrap,.footer-grid{grid-template-columns:1fr}
      nav{display:none}
      nav.open{display:block;position:absolute;left:0;right:0;top:74px;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line)}
      nav.open ul{padding:14px 16px;justify-content:flex-start}
      .menu-toggle{display:inline-flex}
      .hero-stats{grid-template-columns:1fr}
      .mobile-panel{display:block}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 22px))}
      .hero-main,.card,.section-box,.price-box{padding:18px}
      h1{font-size:1.9rem}
      .section-head{flex-direction:column;align-items:flex-start}
      .hero-actions .btn{width:100%}
      .btn{width:100%}
    }