:root{
      --bg:#f7f2ec;
      --bg2:#fffaf5;
      --card:#ffffff;
      --card2:#fff6ef;
      --text:#1f2937;
      --muted:#5f6877;
      --line:#eadfd2;
      --brand:#f15a24;
      --brand2:#ff8a00;
      --accent:#1e88e5;
      --success:#1f9d6b;
      --shadow:0 18px 50px rgba(40,25,12,.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(241,90,36,.10), transparent 30%),
        radial-gradient(circle at 85% 10%, rgba(30,136,229,.10), transparent 20%),
        linear-gradient(180deg, #fffdfb 0%, var(--bg) 18%, #fff 100%);
      line-height:1.7;
    }
    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(14px);
      background: rgba(255,250,245,.88);
      border-bottom:1px solid rgba(234,223,210,.8);
    }
    .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;object-fit:contain;border-radius:10px;background:#fff;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);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-links{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{
      padding:8px 11px;border-radius:999px;color:#374151;font-size:.92rem;
      transition:.2s ease;background:transparent;
    }
    .nav-links a:hover,.nav-links a.active{background:rgba(241,90,36,.10);color:var(--brand)}
    .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:11px 16px;
      font-weight:700;cursor:pointer;transition:.22s ease;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 30px rgba(241,90,36,.25)}
    .btn-secondary{background:#fff;border-color:var(--line);color:#334155}
    .btn:hover{transform:translateY(-1px);box-shadow:0 14px 32px rgba(31,41,55,.10)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;cursor:pointer}
    .menu-toggle span{display:block;width:18px;height:2px;background:#374151;position:relative}
    .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#374151}
    .menu-toggle span::before{top:-6px}.menu-toggle span::after{top:6px}
    main{overflow:hidden}
    section{padding:68px 0}
    .hero{padding:48px 0 42px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:stretch}
    .hero-panel,.side-panel,.card,.table-wrap,.faq-item,.form-box,.review,.article-item,.price-card{
      background:linear-gradient(180deg, rgba(255,255,255,.98), rgba(255,250,245,.98));
      border:1px solid rgba(234,223,210,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-panel{padding:34px;position:relative;overflow:hidden}
    .hero-panel::after{
      content:"";position:absolute;inset:auto -30px -40px auto;width:220px;height:220px;border-radius:50%;
      background:radial-gradient(circle, rgba(241,90,36,.18), rgba(241,90,36,0) 68%);
      pointer-events:none;
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(241,90,36,.10);color:var(--brand);font-weight:700;font-size:.9rem}
    h1{margin:16px 0 14px;font-size:clamp(2rem, 4vw, 3.35rem);line-height:1.08;letter-spacing:-.02em}
    .lead{font-size:1.04rem;color:#475569;max-width:60ch;margin:0 0 22px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
    .mini-stat{padding:14px;border-radius:18px;background:var(--card2);border:1px solid rgba(241,90,36,.10)}
    .mini-stat strong{display:block;font-size:1.2rem;margin-bottom:4px}
    .mini-stat span{display:block;color:var(--muted);font-size:.92rem}
    .side-panel{padding:22px}
    .side-panel h2{font-size:1.15rem;margin:0 0 12px}
    .side-list{display:grid;gap:12px}
    .side-item{padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .side-item b{display:block;margin-bottom:4px}
    .side-item p{margin:0;color:var(--muted);font-size:.94rem}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
    .section-head h2{margin:0;font-size:clamp(1.45rem,2.5vw,2.15rem)}
    .section-head p{margin:0;color:var(--muted);max-width:62ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .card{padding:22px}
    .card h3,.review h3,.article-item h3,.price-card h3{margin:0 0 10px;font-size:1.05rem}
    .card p,.review p,.article-item p,.price-card p{margin:0;color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#374151;font-size:.92rem}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:20px;border-radius:18px;background:linear-gradient(180deg,#fff, #fff7f0);border:1px solid var(--line);position:relative}
    .step .num{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:rgba(241,90,36,.12);color:var(--brand);font-weight:800;margin-bottom:14px}
    .compare{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:760px;background:#fff}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#fff7f0;font-size:.95rem}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:rgba(31,157,107,.10);color:var(--success);font-weight:700;font-size:.86rem}
    .rating{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:14px}
    .stars{color:#f59e0b;font-size:1.15rem;letter-spacing:2px}
    .timeline{display:grid;gap:14px}
    .time-item{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .time-item strong{color:var(--brand)}
    .network{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .network .card{min-height:100%}
    .reviews,.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .review{padding:20px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;color:var(--muted);font-size:.92rem}
    .faq{display:grid;gap:12px}
    .faq-item summary{
      list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;display:flex;justify-content:space-between;gap:16px
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{content:"+";color:var(--brand);font-size:1.2rem;line-height:1}
    .faq-item[open] summary::after{content:"–"}
    .faq-item .answer{padding:0 20px 18px;color:var(--muted)}
    .article-item{padding:20px;display:flex;flex-direction:column;gap:10px}
    .article-item .meta{color:#9a5d3a;font-size:.9rem}
    .pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .price-card{padding:22px;position:relative;overflow:hidden}
    .price-card.featured{border-color:rgba(241,90,36,.35);box-shadow:0 20px 60px rgba(241,90,36,.12)}
    .price{font-size:2rem;font-weight:900;color:#111827;margin:6px 0 8px}
    .price-card ul{margin:14px 0 0;padding-left:18px;color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
    .form-box{padding:24px}
    .form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:block;font-weight:700;margin-bottom:8px}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;padding:13px 14px;font:inherit;color:var(--text);outline:none
    }
    textarea{min-height:126px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(241,90,36,.45);box-shadow:0 0 0 4px rgba(241,90,36,.10)}
    .support-box{padding:24px}
    .qr{display:flex;align-items:center;gap:16px}
    .qr img{width:120px;height:120px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    footer{
      padding:28px 0 34px;
      background:#fff7ef;
      border-top:1px solid var(--line);
      color:#374151;
    }
    footer a{color:#b45309}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{
      width:50px;height:50px;border-radius:16px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;
      box-shadow:0 12px 28px rgba(0,0,0,.12);cursor:pointer
    }
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.in{opacity:1;transform:translateY(0)}
    .mobile-panel{display:none}
    .hero-image-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .hero-image-strip img{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .mobile-only{display:none}
    @media (max-width: 1080px){
      .hero-grid,.form-grid,.footer-grid,.grid-4,.grid-3,.reviews,.articles,.pricing,.network,.workflow{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
    }
    @media (max-width: 760px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 14px}
      .mobile-panel.open{display:block}
      .mobile-panel .nav-links{display:flex;flex-direction:column;align-items:flex-start;padding:10px 0 0}
      .mobile-panel .nav-cta{display:flex;flex-wrap:wrap;padding-top:12px}
      .hero-grid,.form-grid,.footer-grid,.grid-4,.grid-3,.reviews,.articles,.pricing,.network,.workflow{grid-template-columns:1fr}
      .hero-panel,.side-panel,.card,.table-wrap,.faq-item,.form-box,.support-box,.review,.article-item,.price-card{border-radius:18px}
      .hero-panel{padding:24px}
      .time-item{grid-template-columns:1fr}
      .form-row{grid-template-columns:1fr}
      .hero-image-strip{grid-template-columns:1fr}
      section{padding:54px 0}
      .mobile-only{display:block}
    }