:root{
      --bg:#f8f5ef;
      --surface:#fffdf9;
      --surface-2:#f1ece2;
      --line:#e6ddd0;
      --text:#1f2937;
      --muted:#6b7280;
      --brand:#2563eb;
      --brand-2:#ff8a3d;
      --brand-3:#16a34a;
      --shadow:0 18px 50px rgba(44, 62, 80, .08);
      --radius:22px;
      --radius-sm:16px;
      --max:1180px;
    }
    *{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;background:
      radial-gradient(circle at top left, rgba(255,138,61,.10), transparent 24%),
      radial-gradient(circle at 85% 10%, rgba(37,99,235,.09), transparent 20%),
      linear-gradient(180deg,#fbfaf6 0%, #f8f5ef 100%);
      color:var(--text);line-height:1.65}
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:60;background:rgba(248,245,239,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(230,221,208,.7)}
    .topbar{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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 20px rgba(0,0,0,.06);padding:5px}
    .brand h2{margin:0;font-size:1rem;line-height:1.2}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:.84rem}
    .nav-toggle{display:none;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:14px;padding:10px 12px}
    nav{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:.92rem;color:var(--text);padding:8px 10px;border-radius:999px}
    nav a:hover{background:rgba(37,99,235,.08);color:var(--brand)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#4f8cff);color:#fff;box-shadow:0 14px 30px rgba(37,99,235,.22)}
    .btn-secondary{background:linear-gradient(135deg,#fff7ed,#fff);border:1px solid #ffd2b4;color:#b45309}
    .btn:hover{transform:translateY(-2px)}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:22px;align-items:stretch}
    .panel{background:rgba(255,253,249,.86);border:1px solid rgba(230,221,208,.8);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:999px;background:linear-gradient(135deg,rgba(255,138,61,.18),rgba(37,99,235,.12));filter:blur(2px)}
    .hero-main:before{width:240px;height:240px;right:-110px;top:-90px}
    .hero-main:after{width:160px;height:160px;left:-70px;bottom:-70px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(37,99,235,.09);color:#1d4ed8;font-weight:700;font-size:.85rem}
    h1{margin:16px 0 12px;font-size:clamp(2rem,4vw,3.5rem);line-height:1.12;letter-spacing:-.02em}
    .lead{margin:0;color:#334155;font-size:1.02rem;max-width:62ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .mini{padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff, #f9f6f1);border:1px solid var(--line)}
    .mini strong{display:block;font-size:1.06rem}
    .mini span{color:var(--muted);font-size:.88rem}
    .hero-side{padding:22px;display:grid;gap:14px}
    .hero-side .stat{padding:18px;border-radius:18px;background:linear-gradient(135deg,#ffffff,#f8fafc);border:1px solid var(--line)}
    .stat .num{font-size:1.6rem;font-weight:900}
    .stat .label{color:var(--muted);font-size:.9rem}
    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:1.55rem}
    .section-head p{margin:0;color:var(--muted)}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:0 10px 28px rgba(31,41,55,.05);padding:18px;transition:.25s ease}
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 32px rgba(31,41,55,.08)}
    .card h3{margin:0 0 8px;font-size:1.05rem}
    .card p{margin:0;color:var(--muted)}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.9rem}
    .split{display:grid;grid-template-columns:1.02fr .98fr;gap:16px;align-items:start}
    .list{margin:0;padding-left:18px;color:#334155}
    .list li{margin:8px 0}
    .banner-stack{display:grid;gap:12px}
    .ai-page-image{border-radius:18px;border:1px solid var(--line);box-shadow:0 12px 30px rgba(0,0,0,.06)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative;padding:18px 16px 16px;border-radius:20px;background:linear-gradient(180deg,#fff, #fbf8f2);border:1px solid var(--line)}
    .step b{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:rgba(37,99,235,.12);color:var(--brand);margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:var(--surface)}
    table{width:100%;border-collapse:collapse;min-width:900px}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#faf7f1;color:#111827}
    .compare{display:grid;grid-template-columns:1fr .72fr;gap:16px}
    .rating{padding:22px;background:linear-gradient(135deg,#ffffff,#fff7ed);border:1px solid #fed7aa;border-radius:22px}
    .stars{color:#f59e0b;font-size:1.2rem;letter-spacing:2px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .timeline .card{position:relative}
    .timeline .card:before{content:"";position:absolute;left:18px;top:18px;width:10px;height:10px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 6px rgba(255,138,61,.14)}
    .timeline h3{padding-left:24px}
    .comments,.articles,.faq-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .comment{display:flex;flex-direction:column;gap:10px}
    .comment .meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:.9rem}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;background:none;border:none;color:var(--text);font-size:1rem;font-weight:700;text-align:left;padding:0;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;margin-top:0;color:var(--muted)}
    .faq-item.active .faq-a{max-height:180px;margin-top:10px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    footer{margin-top:18px;padding:22px 0 26px;background:#f3efe7;border-top:1px solid var(--line);color:#253041}
    footer a{color:#1d4ed8}
    .footer-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:16px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .floating{position:fixed;right:16px;bottom:16px;z-index:70;display:grid;gap:10px}
    .float-btn{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);color:var(--brand);font-weight:800}
    .float-panel{display:none;width:min(320px, calc(100vw - 32px));padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
    .floating.open .float-panel{display:block}
    .section-anchor{scroll-margin-top:88px}
    .muted{color:var(--muted)}
    .service-network{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .price{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .price .card strong{font-size:1.2rem}
    .marquee{display:flex;gap:10px;flex-wrap:wrap}
    .appear{opacity:0;transform:translateY(14px);transition:.55s ease}
    .appear.in{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.split,.compare,.footer-grid{grid-template-columns:1fr}
      .grid-4,.steps,.timeline,.comments,.articles,.faq-list,.service-network,.price{grid-template-columns:repeat(2,1fr)}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .container{width:min(var(--max), calc(100% - 22px))}
      .nav-toggle{display:inline-flex}
      nav{display:none;width:100%;padding-top:12px}
      nav.open{display:flex;flex-direction:column;align-items:flex-start}
      .topbar{flex-wrap:wrap}
      .hero{padding-top:20px}
      .hero-main,.hero-side{padding:20px}
      .grid-4,.steps,.timeline,.comments,.articles,.faq-list,.service-network,.price,.form-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .hero-actions{flex-direction:column}
      .btn{width:100%}
    }