:root{
      --bg:#f7f4ff;
      --bg2:#fbfbfe;
      --card:#ffffff;
      --text:#1f2340;
      --muted:#5f6787;
      --line:#e7defc;
      --primary:#7b3ff2;
      --primary2:#b24cff;
      --accent:#ff7bd5;
      --shadow:0 18px 50px rgba(91,51,186,.12);
      --radius:22px;
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:radial-gradient(circle at top left,#f0e7ff 0,#fbfaff 30%,#f8f7ff 60%,#f6f6fb 100%);color:var(--text);line-height:1.7}
    img{display:block;max-width:100%;height:auto}
    a{color:inherit;text-decoration:none}
    .container{width:min(100% - 32px,var(--max));margin:0 auto}
    header{position:sticky;top:0;z-index:40;background:rgba(247,244,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(123,63,242,.12)}
    .nav{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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:0 8px 20px rgba(123,63,242,.12)}
    .brand h2{margin:0;font-size:18px}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .nav-links{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px}
    .nav-links a:hover{background:#f2ebff;color:var(--primary)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:14px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;box-shadow:0 10px 28px rgba(123,63,242,.16)}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}
    .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--text);box-shadow:none}
    .btn:hover{transform:translateY(-2px)}
    main{padding:26px 0 8px}
    section{padding:24px 0}
    .hero{padding-top:10px}
    .hero-shell{display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.faq-item,.form-card,.review,.article,.price-box,.timeline li,.compare,.network,.tag-cloud,.service-card,.case-card,.topic-card,.stat,.flow-step{background:linear-gradient(180deg,#fff 0,#fcfbff 100%);border:1px solid rgba(123,63,242,.12);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-copy{padding:30px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);background:#f2eaff;border:1px solid #e8d8ff;border-radius:999px;padding:7px 12px}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.03em}
    .hero-copy p{margin:0;color:var(--muted);font-size:16px}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .stat{padding:16px}
    .stat strong{display:block;font-size:24px;color:var(--text)}
    .stat span{font-size:13px;color:var(--muted)}
    .hero-panel{padding:22px;position:relative;overflow:hidden}
    .hero-panel::before,.hero-panel::after{content:"";position:absolute;border-radius:999px;filter:blur(2px)}
    .hero-panel::before{width:180px;height:180px;background:radial-gradient(circle,rgba(178,76,255,.22),transparent 70%);top:-40px;right:-30px}
    .hero-panel::after{width:220px;height:220px;background:radial-gradient(circle,rgba(255,123,213,.18),transparent 68%);bottom:-80px;left:-40px}
    .panel-grid{position:relative;display:grid;gap:14px}
    .panel-badge{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:14px 16px;background:#faf7ff;border:1px dashed #dac4ff;border-radius:18px}
    .panel-badge b{font-size:15px}
    .panel-badge small{color:var(--muted)}
    .logo-wrap{display:flex;align-items:center;gap:14px;padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .logo-wrap img{width:56px;height:56px;border-radius:16px;object-fit:cover}
    .section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:18px}
    .section-title h2{margin:0;font-size:clamp(24px,2.6vw,36px)}
    .section-title p{margin:0;color:var(--muted)}
    .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,.service-card,.topic-card,.case-card,.review,.article,.price-box,.compare,.network,.tag-cloud,.form-card,.faq-item{padding:20px}
    .service-card h3,.topic-card h3,.case-card h3,.review h3,.article h3{margin:0 0 10px;font-size:18px}
    .service-card p,.topic-card p,.case-card p,.review p,.article p,.price-box p{margin:0;color:var(--muted)}
    .chip-row,.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .chip,.tag{display:inline-flex;align-items:center;border:1px solid var(--line);background:#faf8ff;color:#5a4f82;border-radius:999px;padding:6px 10px;font-size:12px}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:16px 18px}
    .timeline b{display:block;margin-bottom:6px}
    .compare-table{width:100%;border-collapse:collapse}
    .compare-table th,.compare-table td{border-bottom:1px solid #ece5fb;padding:14px 10px;text-align:left;vertical-align:top}
    .compare-table th{color:#34295f;font-size:14px}
    .compare-table td{color:var(--muted)}
    .highlight{color:var(--primary);font-weight:700}
    .faq-item summary{cursor:pointer;list-style:none;font-weight:700}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item[open]{border-color:rgba(123,63,242,.28)}
    .faq-item .answer{color:var(--muted);padding-top:10px}
    .reviews .review{display:flex;flex-direction:column;gap:12px}
    .stars{color:#f2b01e;letter-spacing:2px}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;color:#2d325a;font-weight:600}
    input,select,textarea{width:100%;border:1px solid #dcd3f2;background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(123,63,242,.6);box-shadow:0 0 0 4px rgba(123,63,242,.08)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}
    .footer-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    footer{padding:18px 0 28px;background:#f6f1ff;border-top:1px solid rgba(123,63,242,.12);color:#2a2950}
    footer a{color:#4e2bc6}
    .floating{position:fixed;right:16px;bottom:16px;z-index:45;display:flex;flex-direction:column;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 12px 24px rgba(123,63,242,.24)}
    .backtop{opacity:0;pointer-events:none;transform:translateY(8px);transition:.2s}
    .backtop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .qrcode{display:flex;gap:16px;align-items:center}
    .qrcode img{width:132px;height:132px;object-fit:cover;border-radius:18px;border:1px solid var(--line)}
    .service-network,.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .service-network span{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#514a77}
    .scroll-x{overflow-x:auto}
    .center{text-align:center}
    .muted{color:var(--muted)}
    .price-list{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .price-box strong{display:block;font-size:22px;margin:10px 0;color:var(--text)}
    .quick-links{display:flex;flex-wrap:wrap;gap:10px}
    .quick-links a{padding:9px 12px;background:#fff;border:1px solid var(--line);border-radius:999px;color:#4b4170}
    .img-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .img-row img{border-radius:18px;border:1px solid var(--line)}
    .section-anchor{scroll-margin-top:90px}
    .mobile-hidden{display:block}
    @media (max-width: 960px){
      .hero-shell,.grid-3,.grid-2,.article-list,.footer-wrap,.price-list{grid-template-columns:1fr}
      .hero-meta{grid-template-columns:1fr}
      .nav-links{display:none;width:100%;padding-top:10px}
      .nav-links.open{display:flex;flex-direction:column;align-items:flex-start}
      .menu-btn{display:inline-flex}
      .nav{flex-wrap:wrap}
      .nav-actions{width:100%;justify-content:space-between}
      .form-grid,.img-row{grid-template-columns:1fr}
    }