:root{
      --bg:#f7f5ff;
      --bg2:#ffffff;
      --card:#ffffff;
      --text:#1f2430;
      --muted:#5c6475;
      --line:#e8e1ff;
      --purple:#6f35ff;
      --purple2:#9d64ff;
      --pink:#e95fd7;
      --shadow:0 16px 40px rgba(91, 50, 210, .12);
      --radius:20px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:radial-gradient(circle at top left,#f5eeff 0,#fbf8ff 38%,#ffffff 70%);color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .topbar,.site-header,.site-footer,.section{position:relative}
    .topbar{background:linear-gradient(90deg,#6f35ff,#a35fff);color:#fff;font-size:14px}
    .topbar .container{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 0;flex-wrap:wrap}
    .topbar strong{font-weight:700}
    .site-header{backdrop-filter:blur(10px);background:rgba(255,255,255,.72);border-bottom:1px solid rgba(111,53,255,.1);position:sticky;top:0;z-index:50}
    .header-row{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;padding:6px;box-shadow:0 10px 24px rgba(111,53,255,.12)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:18px;letter-spacing:.5px}
    .brand-text span{display:block;font-size:12px;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:14px;color:#2c3140;padding:8px 10px;border-radius:10px;transition:.25s ease}
    .nav a:hover,.nav a.active{background:rgba(111,53,255,.1);color:var(--purple)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--purple),var(--pink));color:#fff;box-shadow:0 14px 30px rgba(111,53,255,.28)}
    .btn-ghost{background:#fff;border:1px solid rgba(111,53,255,.18);color:var(--purple)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.article,.pricing,.compare,.form-card{background:rgba(255,255,255,.82);border:1px solid rgba(111,53,255,.1);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;overflow:hidden}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(111,53,255,.1);color:var(--purple);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,5vw,54px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:18px;color:#3b4254;max-width:56ch;margin:0 0 20px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .point{padding:14px;border-radius:16px;background:linear-gradient(180deg,#fff,#faf7ff);border:1px solid var(--line)}
    .point strong{display:block;font-size:18px;color:var(--purple)}
    .point span{font-size:13px;color:var(--muted)}
    .hero-side{padding:24px;background:linear-gradient(180deg,#6f35ff 0,#8f58ff 56%,#a66fff 100%);color:#fff;position:relative;overflow:hidden}
    .hero-side::before,.hero-side::after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.12);filter:blur(2px)}
    .hero-side::before{width:140px;height:140px;right:-40px;top:-30px}
    .hero-side::after{width:200px;height:200px;left:-70px;bottom:-90px}
    .hero-side h2,.hero-side p,.hero-side li{color:#fff}
    .side-card{position:relative;z-index:1}
    .metric{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}
    .metric div{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);border-radius:16px;padding:14px}
    .metric strong{display:block;font-size:22px}
    .metric span{font-size:13px;opacity:.9}
    .section{padding:20px 0}
    .section h2{font-size:clamp(24px,3vw,36px);margin:0 0 10px}
    .section p.section-lead{margin:0 0 22px;color:var(--muted);max-width:72ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card,.article,.review,.faq-item,.compare,.pricing,.panel,.form-card{padding:22px}
    .card h3,.panel h3,.pricing h3,.article h3,.review h3{margin:0 0 8px;font-size:18px}
    .muted{color:var(--muted)}
    .tag-cloud{display:flex;gap:10px;flex-wrap:wrap}
    .tag{padding:8px 12px;border-radius:999px;background:#f3edff;border:1px solid #e3d8ff;color:#5a33c0;font-size:13px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{padding:20px;border-radius:18px;background:linear-gradient(180deg,#fff,#fbf8ff);border:1px solid var(--line)}
    .step .num{font-size:12px;font-weight:800;color:var(--purple);letter-spacing:.14em}
    .step h3{margin:10px 0 8px}
    .compare-table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:16px}
    .compare-wrap{overflow:auto}
    .compare-table th,.compare-table td{padding:14px 12px;border-bottom:1px solid #ece6ff;text-align:left;vertical-align:top}
    .compare-table th{background:#f7f2ff;color:#2f2548;font-size:14px}
    .rating{display:flex;align-items:center;gap:8px;font-weight:800;color:#6f35ff}
    .stars{letter-spacing:2px}
    .faq-list{display:grid;gap:12px}
    .faq-item button{width:100%;background:none;border:0;padding:0;text-align:left;color:var(--text);font-size:16px;font-weight:700;display:flex;justify-content:space-between;align-items:center;cursor:pointer}
    .faq-answer{max-height:0;overflow:hidden;transition:max-height .28s ease}
    .faq-item.open .faq-answer{max-height:220px}
    .faq-answer p{margin:12px 0 0;color:var(--muted)}
    .reviews,.articles,.industry,.network,.pricing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review .role{color:var(--purple);font-size:13px;font-weight:700}
    .review p{margin:10px 0 0;color:#3f4657}
    .pill{display:inline-flex;padding:7px 10px;border-radius:999px;background:rgba(111,53,255,.08);color:var(--purple);font-size:12px;font-weight:700}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    label{display:block;font-size:14px;font-weight:700;margin:0 0 8px}
    input,select,textarea{width:100%;border:1px solid #dccfff;background:#fff;border-radius:14px;padding:12px 14px;font:inherit;color:var(--text);outline:none}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--purple);box-shadow:0 0 0 4px rgba(111,53,255,.12)}
    .full{grid-column:1/-1}
    .footer{background:#171824;color:#e9e7f7;margin-top:8px}
    .footer a{color:#f0d9ff}
    .footer .container{padding:24px 0}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer small{color:#bdb8d6}
    .home-link{font-weight:800;color:var(--purple)}
    .floating{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,var(--purple),var(--pink));color:#fff;box-shadow:0 16px 30px rgba(111,53,255,.3)}
    .kefu{position:fixed;left:18px;bottom:18px;z-index:60;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow);width:220px}
    .kefu img{border-radius:12px;margin-top:10px}
    .image-card{display:grid;grid-template-columns:1fr;gap:12px}
    .ai-page-image{border-radius:18px;border:1px solid var(--line)}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:84px 1fr;gap:14px;align-items:start;padding:14px 0;border-bottom:1px dashed #e7ddff}
    .timeline-item:last-child{border-bottom:0}
    .timeline-item strong{color:var(--purple)}
    .scroll-x{overflow:auto}
    .fade-in{opacity:0;transform:translateY(14px);transition:.55s ease}
    .fade-in.show{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-3,.grid-2,.reviews,.articles,.industry,.network,.pricing-grid,.footer-grid,.steps{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 768px){
      .nav-toggle{display:inline-flex}
      .nav{display:none;position:absolute;left:16px;right:16px;top:66px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow)}
      .nav.open{display:flex;flex-direction:column;align-items:flex-start}
      .header-row{position:relative}
      .hero-grid,.grid-3,.grid-2,.reviews,.articles,.industry,.network,.pricing-grid,.footer-grid,.steps,.form-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .kefu{width:min(220px,calc(100vw - 36px))}
      .timeline-item{grid-template-columns:1fr}
      .compare-table th,.compare-table td{min-width:180px}
    }
    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      *,*::before,*::after{animation:none!important;transition:none!important}
    }