:root{
      --bg:#f7f4ff;
      --bg2:#ffffff;
      --card:#ffffff;
      --text:#1d2230;
      --muted:#667085;
      --line:#e7defa;
      --primary:#6f35ff;
      --primary2:#b156ff;
      --accent:#ff5bb8;
      --accent2:#7b8cff;
      --shadow:0 18px 50px rgba(85,42,170,.12);
      --shadow2:0 12px 30px rgba(111,53,255,.16);
      --radius:20px;
      --radius2:28px;
      --container: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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(177,86,255,.12), transparent 34%),
        radial-gradient(circle at top right, rgba(255,91,184,.10), transparent 30%),
        linear-gradient(180deg, #fbf9ff 0%, #f7f4ff 45%, #ffffff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .skip{position:absolute;left:-9999px}
    .skip:focus{left:12px;top:12px;background:#fff;padding:10px 14px;border-radius:12px;z-index:9999}
    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(255,255,255,.78);
      border-bottom:1px solid rgba(231,222,250,.85);
    }
    .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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 20px rgba(80,40,170,.08)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-links{display:flex;flex-wrap:wrap;gap:6px;align-items:center;justify-content:flex-end}
    .nav-links a{
      padding:9px 12px;border-radius:999px;color:#2d3142;font-size:14px;
      transition:.25s ease;background:transparent
    }
    .nav-links a:hover,.nav-links a.active{background:linear-gradient(135deg, rgba(111,53,255,.12), rgba(255,91,184,.14)); color:#3a1c8a}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 16px;border-radius:14px;border:1px solid transparent;font-weight:700;
      transition:.25s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 36px rgba(111,53,255,.26)}
    .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-ghost:hover{border-color:#d2c1ff;transform:translateY(-1px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);padding:10px 12px;border-radius:14px}
    .hero{padding:34px 0 16px}
    .hero-grid{
      display:grid;grid-template-columns:1.08fr .92fr;gap:24px;align-items:stretch
    }
    .hero-card{
      background:
        linear-gradient(135deg, rgba(111,53,255,.10), rgba(255,91,184,.08)),
        rgba(255,255,255,.78);
      border:1px solid rgba(231,222,250,.95);
      border-radius:var(--radius2);
      box-shadow:var(--shadow);
      padding:30px;
      position:relative;overflow:hidden
    }
    .hero-card::before,.hero-card::after{
      content:"";position:absolute;border-radius:999px;filter:blur(2px);pointer-events:none
    }
    .hero-card::before{width:180px;height:180px;background:rgba(111,53,255,.10);right:-50px;top:-30px}
    .hero-card::after{width:220px;height:220px;background:rgba(255,91,184,.10);left:-80px;bottom:-110px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
      background:rgba(111,53,255,.10); color:#4d2bb3;font-size:13px;font-weight:700
    }
    h1{font-size:clamp(32px,5vw,56px);line-height:1.06;margin:16px 0 14px;letter-spacing:-.03em}
    .lead{font-size:16px;line-height:1.85;color:var(--muted);max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:22px}
    .mini{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 15px;box-shadow:0 8px 24px rgba(73,42,143,.05)
    }
    .mini b{display:block;font-size:18px;margin-bottom:6px}
    .mini span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-side{
      display:grid;gap:16px
    }
    .glass{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(231,222,250,.95);
      border-radius:var(--radius2);
      box-shadow:var(--shadow);
      padding:22px
    }
    .metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric{
      background:linear-gradient(180deg,#fff 0%, #fbf8ff 100%);
      border:1px solid var(--line);border-radius:18px;padding:16px
    }
    .metric strong{display:block;font-size:26px;line-height:1;color:#291a57}
    .metric span{display:block;font-size:13px;color:var(--muted);margin-top:8px;line-height:1.45}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);
      color:#3b3f53;font-size:13px;transition:.25s ease
    }
    .tag:hover{transform:translateY(-1px);border-color:#d7c4ff;box-shadow:0 10px 18px rgba(111,53,255,.08)}
    section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,34px)}
    .section-head p{margin:0;color:var(--muted);max-width:70ch;line-height:1.7}
    .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{
      background:var(--card);border:1px solid var(--line);border-radius:22px;
      box-shadow:0 8px 24px rgba(67,43,130,.06);padding:20px;transition:.25s ease
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(111,53,255,.12)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted);line-height:1.75}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:12px;
      background:linear-gradient(135deg, rgba(111,53,255,.12), rgba(255,91,184,.12));color:#5a2ed1;font-weight:900
    }
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative}
    .step::after{
      content:"";position:absolute;top:29px;right:-8px;width:16px;height:2px;background:linear-gradient(90deg,var(--primary),rgba(111,53,255,.15));display:none
    }
    .step:last-child::after{display:none}
    .step-num{
      width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:800;margin-bottom:12px
    }
    .compare-wrap{overflow:auto;border-radius:24px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #efe8fb;text-align:left;vertical-align:top}
    th{background:#faf7ff;color:#2b214a;font-size:14px}
    td{color:#394055;line-height:1.7}
    .highlight{font-weight:800;color:#5327c6}
    .rating{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:14px
    }
    .score{
      padding:18px;border-radius:20px;background:linear-gradient(135deg, rgba(111,53,255,.12), rgba(255,91,184,.08));
      border:1px solid rgba(111,53,255,.18)
    }
    .score strong{display:block;font-size:28px;color:#32196d}
    .score span{display:block;color:#5c5771;margin-top:8px;line-height:1.6}
    .accordion{display:grid;gap:12px}
    .qa{border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}
    .qa button{
      width:100%;padding:18px 18px;background:transparent;border:0;display:flex;justify-content:space-between;align-items:center;
      font:inherit;color:var(--text);cursor:pointer;text-align:left;gap:16px
    }
    .qa button span{font-weight:700}
    .qa .answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 18px}
    .qa .answer p{margin:0 0 16px;color:var(--muted);line-height:1.8}
    .qa.open .answer{max-height:220px}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review .name{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .stars{color:#ffac2f;letter-spacing:1px;font-size:14px}
    .article-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .article{
      padding:18px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,#fff 0%, #fcfbff 100%)
    }
    .article strong{display:block;margin-bottom:8px}
    .article a{color:#4d2bb3;font-weight:700}
    .images-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .ai-page-image{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .form-card form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .form-card .full{grid-column:1/-1}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid #dcd1f3;background:#fff;
      color:var(--text);font:inherit;outline:none;transition:.2s ease
    }
    textarea{min-height:122px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#a175ff;box-shadow:0 0 0 4px rgba(111,53,255,.10)}
    .submit-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .small-note{color:var(--muted);font-size:13px;line-height:1.7}
    .footer{
      margin-top:18px;padding:28px 0 24px;border-top:1px solid rgba(231,222,250,.95);
      background:linear-gradient(180deg, rgba(255,255,255,.84), rgba(247,244,255,.94));
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer a{color:#4327a7}
    .footer p,.footer li{color:#5f6478;line-height:1.8}
    .footer ul{margin:0;padding-left:18px}
    .mobile-toggle{display:none}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-tools a,.float-tools button{
      width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;color:#4b2eb0;
      display:grid;place-items:center;box-shadow:0 14px 28px rgba(73,42,143,.12);cursor:pointer
    }
    .kefu-card{
      position:fixed;left:16px;bottom:16px;z-index:60;width:170px;background:#fff;border:1px solid var(--line);
      border-radius:18px;box-shadow:0 14px 28px rgba(73,42,143,.12);padding:10px
    }
    .kefu-card img{border-radius:12px}
    .kefu-card small{display:block;color:var(--muted);margin-top:8px;line-height:1.5}
    .fade-in{opacity:0;transform:translateY(14px);transition:.55s ease}
    .fade-in.visible{opacity:1;transform:none}
    .anchor-spacer{scroll-margin-top:92px}
    .home-link{
      display:inline-flex;align-items:center;gap:8px;color:#3d238f;font-weight:800
    }
    .top-strip{
      display:flex;justify-content:space-between;gap:10px;align-items:center;padding:10px 0 0;color:var(--muted);font-size:13px
    }
    .top-strip .mini-links{display:flex;gap:12px;flex-wrap:wrap}
    .divider{height:1px;background:linear-gradient(90deg, transparent, rgba(111,53,255,.16), transparent);margin:10px 0 0}
    @media (max-width: 1024px){
      .hero-grid,.grid-3,.grid-2,.reviews,.images-row,.footer-grid,.workflow{grid-template-columns:1fr}
      .rating{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-toggle{display:block}
      .hero-points{grid-template-columns:1fr}
      .form-card form{grid-template-columns:1fr}
      .kefu-card{display:none}
    }
    .mobile-panel{
      display:none;padding:0 0 14px
    }
    .mobile-panel.open{display:block}
    .mobile-panel .panel{
      background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow)
    }
    .mobile-panel a{display:block;padding:11px 8px;border-radius:12px;color:#2f3550}
    .mobile-panel a:hover{background:#f6f1ff}
    .muted-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .muted-list li{padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;color:#3c4357}