:root{
      --bg:#f7f3ee;
      --panel:#fffaf4;
      --panel-2:#fff;
      --text:#1f2937;
      --muted:#5f6b7a;
      --line:#e7ddd2;
      --brand:#ff6b4a;
      --brand2:#ffb347;
      --accent:#2f6fed;
      --green:#2c9b67;
      --shadow:0 18px 40px rgba(68, 51, 34, .08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,179,71,.16), transparent 26%),
        radial-gradient(circle at top right, rgba(255,107,74,.12), transparent 22%),
        linear-gradient(180deg, #fffdf9 0%, var(--bg) 100%);
      overflow-x:hidden;
    }
    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:saturate(160%) blur(12px);
      background:rgba(255,251,246,.86);
      border-bottom:1px solid rgba(231,221,210,.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;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:0 8px 20px rgba(0,0,0,.05)}
    .brand strong{display:block;font-size:1rem;line-height:1.2}
    .brand span{display:block;font-size:.82rem;color:var(--muted)}
    .nav-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:.93rem;color:#304050}
    .nav-links a{padding:8px 10px;border-radius:999px}
    .nav-links a:hover,.nav-links a:focus{background:rgba(255,107,74,.08);color:#111827}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:0;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 14px 28px rgba(255,107,74,.25)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,107,74,.32)}
    .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#f1c6ab;transform:translateY(-2px)}
    .menu-toggle{display:none}
    .hero{
      padding:30px 0 18px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel{
      background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,250,244,.92));
      border:1px solid rgba(231,221,210,.85);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{padding:30px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:50%;pointer-events:none;
      background:radial-gradient(circle, rgba(255,179,71,.24), transparent 65%);
    }
    .hero-main:before{width:240px;height:240px;top:-90px;right:-70px}
    .hero-main:after{width:180px;height:180px;bottom:-70px;left:-70px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;background:rgba(47,111,237,.08);
      color:#1f4fbf;font-weight:700;font-size:.86rem;
    }
    h1{
      margin:16px 0 12px;
      font-size:clamp(2rem, 4vw, 3.55rem);
      line-height:1.08;
      letter-spacing:-.02em;
    }
    .hero p{
      margin:0;color:var(--muted);font-size:1.02rem;line-height:1.8;max-width:58ch;
    }
    .hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 18px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .chip{
      padding:8px 12px;border:1px solid var(--line);background:#fff;border-radius:999px;color:#3a4a5d;font-size:.9rem
    }
    .hero-stats{
      display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px;
    }
    .stat{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#fff9f2);border:1px solid var(--line)
    }
    .stat strong{display:block;font-size:1.3rem}
    .stat span{display:block;color:var(--muted);font-size:.86rem;margin-top:4px;line-height:1.5}
    .hero-side{padding:22px;display:flex;flex-direction:column;gap:14px}
    .side-card{
      padding:18px;border-radius:18px;background:linear-gradient(135deg, rgba(255,107,74,.09), rgba(47,111,237,.08));
      border:1px solid rgba(255,107,74,.14)
    }
    .side-card h3,.section-title h2{margin:0 0 8px;font-size:1.2rem}
    .side-card p,.section-sub{margin:0;color:var(--muted);line-height:1.75}
    .side-list{display:grid;gap:10px;margin:12px 0 0;padding:0;list-style:none}
    .side-list li{display:flex;gap:10px;align-items:flex-start;color:#334155;line-height:1.6}
    .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));flex:none;margin-top:7px}
    .section{padding:18px 0}
    .section-title{
      display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px
    }
    .section-title h2{font-size:clamp(1.35rem,2vw,2rem)}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .card,.review,.case,.article,.faq-item,.form-wrap,.compare{
      background:linear-gradient(180deg,#fff, #fffaf5);
      border:1px solid var(--line);
      border-radius:var(--radius-sm);
      box-shadow:0 10px 24px rgba(48,38,24,.05);
    }
    .card{padding:18px}
    .card h3,.case h3,.article h3{margin:0 0 8px;font-size:1.05rem}
    .card p,.case p,.article p{margin:0;color:var(--muted);line-height:1.75}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(255,107,74,.13), rgba(255,179,71,.18));
      color:#b54a24;font-weight:800;margin-bottom:14px;
    }
    .card:hover,.review:hover,.case:hover,.article:hover,.faq-item:hover{transform:translateY(-3px);transition:.22s ease;box-shadow:0 16px 30px rgba(48,38,24,.08)}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#334155;font-size:.9rem}
    .timeline,.step-list{display:grid;gap:14px}
    .step{
      display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:start;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff
    }
    .step-num{
      width:56px;height:56px;border-radius:18px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:800;font-size:1.05rem
    }
    .step h3{margin:0 0 6px}
    .step p{margin:0;color:var(--muted);line-height:1.7}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start
    }
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#fff7f0;color:#1f2937;font-size:.95rem}
    td{color:#334155;line-height:1.7}
    .badge{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(44,155,103,.1);color:#1f7a50;font-weight:700;font-size:.84rem}
    .compare-score{
      display:grid;grid-template-columns:1.2fr .8fr;gap:16px
    }
    .score-box{
      padding:22px;border-radius:20px;background:linear-gradient(135deg, rgba(255,107,74,.12), rgba(47,111,237,.09));border:1px solid rgba(255,107,74,.16)
    }
    .score-box .big{font-size:2.6rem;font-weight:900;line-height:1}
    .stars{color:#f59e0b;font-size:1.2rem;letter-spacing:2px}
    details.faq-item{padding:0;overflow:hidden}
    details.faq-item summary{list-style:none;cursor:pointer;padding:18px 18px 16px;font-weight:700;display:flex;justify-content:space-between;gap:12px}
    details.faq-item summary::-webkit-details-marker{display:none}
    details.faq-item .answer{padding:0 18px 18px;color:var(--muted);line-height:1.8}
    .review{
      padding:18px;display:flex;flex-direction:column;gap:10px
    }
    .review-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .avatar{
      width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
      background:linear-gradient(135deg,#ffe2d8,#fff2db);border:1px solid var(--line);font-weight:800;color:#a14a2a
    }
    .review small{color:var(--muted)}
    .case{
      padding:0;overflow:hidden
    }
    .case-body{padding:18px}
    .article{padding:18px}
    .article time{display:block;color:var(--muted);font-size:.88rem;margin-bottom:8px}
    .form-wrap{padding:18px}
    form{
      display:grid;grid-template-columns:repeat(2,1fr);gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-weight:700;font-size:.92rem}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;
      font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s ease
    }
    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,.18)}
    .submit-row{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
    .note{color:var(--muted);font-size:.9rem;line-height:1.6}
    footer{
      margin-top:18px;
      padding:22px 0 26px;
      background:#f2ebe4;
      border-top:1px solid var(--line);
      color:#243242;
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{color:#284a78}
    .footer-links a:hover{text-decoration:underline}
    .contact-box{
      padding:18px;border-radius:20px;background:#fff;border:1px solid var(--line)
    }
    .contact-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .contact-list li{display:flex;gap:10px;align-items:flex-start;line-height:1.7}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px
    }
    .floating a,.floating button{
      width:52px;height:52px;border-radius:16px;border:1px solid rgba(231,221,210,.9);background:#fff;box-shadow:0 12px 24px rgba(0,0,0,.08);
      display:grid;place-items:center;cursor:pointer;color:#243242;font-weight:800
    }
    .floating a:hover,.floating button:hover{transform:translateY(-2px)}
    .mobile-only{display:none}
    .toc{
      display:flex;flex-wrap:wrap;gap:10px;margin-top:16px
    }
    .toc a{
      padding:8px 12px;background:#fff;border:1px solid var(--line);border-radius:999px;color:#334155;font-size:.9rem
    }
    .toc a:hover{border-color:#ffb347;color:#111827}
    .qr{
      display:flex;gap:14px;align-items:center;flex-wrap:wrap
    }
    .qr img{width:112px;height:112px;object-fit:cover;border-radius:16px;border:1px solid var(--line);background:#fff}
    .image-row{
      display:grid;grid-template-columns:1fr 1fr;gap:16px
    }
    .image-row img{width:100%;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:0 12px 24px rgba(0,0,0,.05)}
    .split-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
    .subtle{color:var(--muted);font-size:.92rem}
    .scroll-fade{opacity:0;transform:translateY(18px);transition:.65s ease}
    .scroll-fade.in{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.grid-3,.split,.compare-score,.footer-grid{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .nav-actions{gap:8px}
      .hero-stats{grid-template-columns:1fr}
      .compare-score{gap:12px}
    }
    @media (max-width: 768px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero-main,.hero-side,.card,.form-wrap{padding:18px}
      .section{padding:14px 0}
      .section-title{align-items:flex-start;flex-direction:column}
      form{grid-template-columns:1fr}
      .submit-row{grid-column:auto;flex-direction:column;align-items:stretch}
      .mobile-only{display:inline-flex}
      .desktop-only{display:none}
      .image-row{grid-template-columns:1fr}
    }
    .nav-open .nav-links{
      display:flex;position:absolute;left:16px;right:16px;top:72px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow)
    }