:root{
      --bg:#f7f4fb;
      --bg2:#f4f2f9;
      --card:#ffffff;
      --text:#1f2430;
      --muted:#5f6678;
      --line:rgba(62,32,96,.12);
      --pri:#c43cff;
      --sec:#7e4dff;
      --acc:#ff4fb6;
      --warm:#ff7bd6;
      --shadow:0 18px 50px rgba(84,38,130,.12);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 10%, rgba(196,60,255,.12), transparent 24%),
        radial-gradient(circle at 90% 0%, rgba(255,79,182,.14), transparent 28%),
        linear-gradient(180deg, #fbf8fe 0%, #f7f4fb 35%, #f6f1fb 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .topbar,.site-header,.site-footer,.section{position:relative}
    .topbar{
      background:linear-gradient(90deg, rgba(196,60,255,.08), rgba(255,79,182,.08));
      border-bottom:1px solid var(--line);
      font-size:13px;
      color:var(--muted);
    }
    .topbar .container{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0}
    .top-links{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .site-header{backdrop-filter:saturate(140%) blur(12px);background:rgba(247,244,251,.72);border-bottom:1px solid rgba(98,58,150,.12);position:sticky;top:0;z-index:50}
    .nav-wrap{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:46px;height:46px;object-fit:contain;border-radius:14px;background:#fff;padding:6px;box-shadow:0 10px 24px rgba(126,77,255,.12)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;color:var(--muted);font-size:12px;margin-top:4px}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-btn,.btn{
      border:0;cursor:pointer;border-radius:999px;font-weight:700;transition:.25s ease;
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
    }
    .menu-btn{display:none;background:#fff;color:var(--text);padding:11px 14px;border:1px solid var(--line)}
    .btn{padding:12px 18px;box-shadow:0 12px 28px rgba(126,77,255,.16)}
    .btn-primary{background:linear-gradient(135deg,var(--pri),var(--sec));color:#fff}
    .btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
    .btn:hover,.menu-btn:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(126,77,255,.2)}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{color:var(--text);font-size:14px;padding:8px 10px;border-radius:10px;transition:.2s}
    .nav a:hover,.nav a.active{background:rgba(196,60,255,.1);color:#7620d4}
    .hero{padding:40px 0 28px}
    .hero-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:24px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.article,.timeline-item,.price-box,.compare,.form-box,.service-box,.quote{
      background:rgba(255,255,255,.86);border:1px solid rgba(126,77,255,.12);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-main{padding:34px;overflow:hidden}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(196,60,255,.1);color:#7824d6;font-weight:700;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(34px,5vw,58px);line-height:1.04;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
    .mini-stat{padding:14px 14px 13px;border-radius:18px;background:linear-gradient(180deg,#fff, #f8f3ff);border:1px solid rgba(126,77,255,.10)}
    .mini-stat b{display:block;font-size:18px}
    .mini-stat span{display:block;color:var(--muted);font-size:12px;margin-top:4px;line-height:1.5}
    .hero-side{padding:20px;display:grid;gap:14px;align-content:start}
    .side-visual{padding:18px;border-radius:20px;background:linear-gradient(145deg, rgba(126,77,255,.18), rgba(255,79,182,.10));border:1px solid rgba(126,77,255,.14)}
    .side-visual h3{margin:0 0 10px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid rgba(126,77,255,.12);color:#4b5160;font-size:13px}
    .section{padding:18px 0}
    .section h2{margin:0 0 14px;font-size:clamp(24px,3vw,36px);line-height:1.15}
    .section .sub{margin:0 0 20px;color:var(--muted);line-height:1.8}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .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-box,.review,.article,.price-box,.compare,.form-box{padding:20px}
    .card h3,.service-box h3,.price-box h3{margin:0 0 10px;font-size:18px}
    .card p,.service-box p,.review p,.article p,.price-box p,.compare p{margin:0;color:var(--muted);line-height:1.75}
    .metric{font-size:30px;font-weight:800;color:#3a0d66}
    .metric small{font-size:13px;color:var(--muted);font-weight:600}
    .section-band{background:linear-gradient(180deg, rgba(255,255,255,.42), rgba(255,255,255,.7));border-top:1px solid rgba(126,77,255,.08);border-bottom:1px solid rgba(126,77,255,.08)}
    .workflow,.timeline{display:grid;gap:14px}
    .step,.timeline-item{padding:18px;border-radius:18px;background:#fff;border:1px solid rgba(126,77,255,.10)}
    .step .num,.timeline-item .num{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--pri),var(--acc));color:#fff;font-weight:800;margin-bottom:10px}
    table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid rgba(126,77,255,.12);background:#fff}
    th,td{padding:14px 14px;text-align:left;vertical-align:top;border-bottom:1px solid rgba(126,77,255,.08);font-size:14px;line-height:1.6}
    th{background:linear-gradient(180deg,#faf7ff,#f4eeff);white-space:nowrap}
    tr:last-child td{border-bottom:0}
    .rating{display:flex;align-items:center;gap:8px;font-weight:800;color:#4a176f}
    .stars{color:#ff9800;letter-spacing:2px}
    details.faq-item{padding:0;overflow:hidden}
    details summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:16px}
    details summary::-webkit-details-marker{display:none}
    details .faq-content{padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .faq-item[open]{box-shadow:0 20px 44px rgba(126,77,255,.14)}
    .review .name{font-weight:800;margin-top:10px}
    .review .role{color:#7a6a8c;font-size:13px;margin-top:4px}
    .article .meta{font-size:12px;color:#8654ae;font-weight:700;margin-bottom:8px}
    .quote{padding:22px;background:linear-gradient(135deg,rgba(196,60,255,.08),rgba(255,79,182,.06))}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:block;font-size:13px;font-weight:700;margin:0 0 8px;color:#3f4452}
    input,select,textarea{
      width:100%;border-radius:14px;border:1px solid rgba(126,77,255,.16);background:#fff;color:var(--text);
      padding:12px 14px;font:inherit;outline:none;transition:.2s
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(196,60,255,.5);box-shadow:0 0 0 4px rgba(196,60,255,.12)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
    .footer{
      margin-top:18px;padding:28px 0 20px;background:linear-gradient(180deg,#fff, #f6f1fb);border-top:1px solid rgba(126,77,255,.12)
    }
    .footer-grid{display:grid;grid-template-columns:1.3fr .9fr .8fr;gap:18px;align-items:start}
    .footer h3{margin:0 0 12px}
    .footer p,.footer a{color:#4f5666}
    .footer a:hover{color:#7e2ee6}
    .small{font-size:13px;color:var(--muted);line-height:1.8}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .tool{
      width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--pri),var(--acc));color:#fff;font-weight:900;box-shadow:0 14px 30px rgba(126,77,255,.28)
    }
    .tool.secondary{background:#fff;color:var(--text);border:1px solid rgba(126,77,255,.14)}
    .mobile-nav{display:none}
    .scroll-anim{opacity:0;transform:translateY(18px);transition:.7s ease}
    .scroll-anim.in{opacity:1;transform:none}
    .pill{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;background:rgba(126,77,255,.08);color:#5c2ab3;font-size:12px;font-weight:700}
    .two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .image-stack{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .image-stack img,.side-visual img{border-radius:18px;border:1px solid rgba(126,77,255,.12);background:#fff}
    .links-inline{display:flex;flex-wrap:wrap;gap:10px}
    .links-inline a{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid rgba(126,77,255,.12);font-size:13px}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.two-col,.footer-grid{grid-template-columns:1fr}
      .nav{display:none}
      .menu-btn{display:inline-flex}
      .mobile-nav{display:block;max-height:0;overflow:hidden;transition:max-height .3s ease}
      .mobile-nav.open{max-height:620px}
      .mobile-nav .nav{display:grid;gap:8px;padding:0 0 14px}
      .mobile-nav .nav a{padding:12px 14px;background:#fff;border:1px solid rgba(126,77,255,.12)}
      .hero-points{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      .topbar .container,.nav-wrap{padding:10px 0}
      .hero-main{padding:22px}
      .hero-side,.card,.service-box,.review,.article,.price-box,.compare,.form-box{padding:16px}
      .container{width:min(100% - 22px, var(--container))}
      h1{font-size:32px}
      .float-tools{right:12px;bottom:12px}
    }