:root{
      --bg:#0e0718;
      --bg2:#160b28;
      --panel:#160f24;
      --card:#1c122f;
      --card2:#24153c;
      --line:rgba(255,255,255,.10);
      --text:#f5f2ff;
      --muted:#b8aacf;
      --accent:#ff4fd8;
      --accent2:#a855f7;
      --accent3:#4dd7ff;
      --good:#53f0c3;
      --warning:#ffd36b;
      --shadow:0 22px 60px rgba(0,0,0,.35);
      --radius:22px;
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,79,216,.16), transparent 26%),
        radial-gradient(circle at 80% 10%, rgba(77,215,255,.12), transparent 24%),
        linear-gradient(180deg, #0b0612 0%, #12091f 38%, #100816 100%);
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;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:30;
      backdrop-filter: blur(16px);
      background:rgba(12,7,19,.78);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .nav{
      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:42px; height:42px; border-radius:12px; object-fit:contain; background:#fff1}
    .brand strong{display:block; font-size:16px; letter-spacing:.4px}
    .brand span{display:block; font-size:12px; color:var(--muted)}
    .menu{display:flex; align-items:center; gap:18px; flex-wrap:wrap}
    .menu a{font-size:14px; color:#e9defd; opacity:.88}
    .menu a:hover{color:#fff}
    .nav-actions{display:flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:1px solid rgba(255,255,255,.13);
      border-radius:999px; padding:11px 16px; font-weight:700; font-size:14px;
      background:linear-gradient(135deg, rgba(255,79,216,.14), rgba(168,85,247,.18));
      color:#fff; box-shadow:0 10px 30px rgba(168,85,247,.18);
      transition:.25s ease;
    }
    .btn:hover{transform:translateY(-2px); box-shadow:0 14px 34px rgba(255,79,216,.22)}
    .btn.primary{background:linear-gradient(135deg, var(--accent), var(--accent2)); border-color:transparent}
    .btn.ghost{background:rgba(255,255,255,.04)}
    .mobile-toggle{display:none; width:42px; height:42px; border-radius:14px; border:1px solid rgba(255,255,255,.12); background:rgba(255,255,255,.04); color:#fff}
    main{display:block}
    section{padding:72px 0}
    .hero{
      padding:34px 0 28px;
      position:relative;
      overflow:hidden;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.15fr .85fr; gap:24px; align-items:stretch;
    }
    .hero-copy, .hero-side, .panel, .card, .faq-item, .quote, .form-wrap, .table-wrap, .article, .timeline li, .price-box{
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-copy{padding:34px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px;
      background:rgba(255,79,216,.12); border:1px solid rgba(255,79,216,.26); color:#ffd9f5; font-size:13px; font-weight:700;
    }
    h1{font-size:clamp(34px, 5vw, 56px); line-height:1.06; margin:18px 0 14px}
    .lead{font-size:16px; line-height:1.8; color:#e7ddfa; max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin:24px 0 22px}
    .hero-metrics{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:22px}
    .metric{padding:16px; border-radius:18px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08)}
    .metric strong{display:block; font-size:22px}
    .metric span{font-size:13px; color:var(--muted)}
    .hero-side{padding:22px}
    .side-stack{display:grid; gap:12px}
    .quick{
      padding:16px; border-radius:18px; background:rgba(14,7,24,.56); border:1px solid rgba(255,255,255,.08)
    }
    .quick h3{margin:0 0 8px; font-size:16px}
    .quick p, .quick li{color:var(--muted); line-height:1.7; font-size:14px}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:8px 12px; border-radius:999px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08); color:#f0e8ff; font-size:13px}
    .section-head{display:flex; justify-content:space-between; align-items:end; gap:16px; margin-bottom:24px}
    .section-head h2{margin:0; font-size:clamp(24px,3vw,34px)}
    .section-head p{margin:0; color:var(--muted); max-width:62ch; line-height:1.7}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
    .card{padding:22px}
    .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:14px;
      background:linear-gradient(135deg, rgba(77,215,255,.22), rgba(255,79,216,.18));
      border:1px solid rgba(255,255,255,.12)
    }
    .split{display:grid; grid-template-columns:1fr 1fr; gap:16px}
    .panel{padding:24px}
    .list{display:grid; gap:12px; padding:0; margin:0; list-style:none}
    .list li{display:flex; gap:10px; align-items:flex-start; color:#e8ddff; line-height:1.7}
    .dot{width:10px; height:10px; border-radius:50%; background:linear-gradient(135deg, var(--good), var(--accent3)); margin-top:9px; flex:0 0 auto}
    .table-wrap{overflow:auto; padding:4px}
    table{width:100%; border-collapse:collapse; min-width:860px; color:#f5f1ff}
    th,td{padding:16px 14px; border-bottom:1px solid rgba(255,255,255,.08); text-align:left; vertical-align:top}
    th{font-size:14px; color:#fff; background:rgba(255,255,255,.04)}
    td{color:#e5d9fb; line-height:1.7; font-size:14px}
    .rating{display:flex; gap:4px; color:#ffd36b; font-size:18px}
    .faq{display:grid; gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%; display:flex; align-items:center; justify-content:space-between; gap:12px;
      padding:18px 18px; background:transparent; border:0; color:#fff; font-size:16px; text-align:left; cursor:pointer
    }
    .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease; padding:0 18px}
    .faq-item.open .faq-a{max-height:180px; padding-bottom:18px}
    .faq-a p{margin:0; color:var(--muted); line-height:1.8}
    .chev{transition:.25s ease}
    .faq-item.open .chev{transform:rotate(180deg)}
    .quotes{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .quote{padding:22px}
    .quote .meta{display:flex; justify-content:space-between; align-items:center; gap:12px; margin-bottom:12px}
    .quote b{font-size:15px}
    .quote em{font-style:normal; color:#cdbaf2; font-size:13px}
    .quote p{margin:0; color:#e7dcfb; line-height:1.78}
    .articles{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .article{padding:22px}
    .article .date{color:#bdabdd; font-size:13px; margin-bottom:8px}
    .article a{display:inline-block; margin-top:12px; color:#ffb0ec}
    .timeline{list-style:none; padding:0; margin:0; display:grid; gap:14px}
    .timeline li{padding:18px 18px 18px 20px}
    .timeline strong{display:block; margin-bottom:6px}
    .timeline span{color:var(--muted); line-height:1.7; font-size:14px}
    .form-wrap{padding:24px}
    form{display:grid; gap:14px}
    .fields{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
    input, select, textarea{
      width:100%; border-radius:16px; border:1px solid rgba(255,255,255,.12);
      background:rgba(6,4,12,.42); color:#fff; padding:14px 15px; outline:none; font:inherit
    }
    textarea{min-height:130px; resize:vertical}
    input::placeholder, textarea::placeholder{color:#9f90bf}
    .form-actions{display:flex; flex-wrap:wrap; gap:12px; align-items:center}
    footer{
      padding:38px 0 28px;
      background:rgba(8,5,14,.96);
      border-top:1px solid rgba(255,255,255,.08);
      color:#e9defd;
    }
    .footer-grid{display:grid; grid-template-columns:1.25fr .95fr .8fr; gap:16px}
    .footer-grid p, .footer-grid a{color:#d9cbf4; line-height:1.8; font-size:14px}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a{padding:8px 12px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08); border-radius:999px}
    .bottom{margin-top:22px; padding-top:18px; border-top:1px solid rgba(255,255,255,.08); color:#bdaedc; font-size:13px}
    .float{
      position:fixed; right:18px; bottom:18px; z-index:40; display:grid; gap:10px
    }
    .float a, .float button{
      width:48px; height:48px; border-radius:16px; border:1px solid rgba(255,255,255,.14);
      background:linear-gradient(135deg, rgba(255,79,216,.90), rgba(168,85,247,.90)); color:#fff; display:grid; place-items:center;
      box-shadow:var(--shadow); cursor:pointer
    }
    .mobile-nav{display:none}
    .compare-note{display:grid; gap:12px}
    .center{display:grid; place-items:center}
    .badge-row{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
    .mini{font-size:13px; color:var(--muted)}
    .image-strip{display:grid; grid-template-columns:1fr 1fr; gap:16px}
    .image-strip img{width:100%; border-radius:18px; border:1px solid rgba(255,255,255,.08)}
    .divider{height:1px; background:rgba(255,255,255,.08); margin:18px 0}
    .scroll-reveal{opacity:0; transform:translateY(18px); transition:.55s ease}
    .scroll-reveal.show{opacity:1; transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.split,.quotes,.articles,.footer-grid,.image-strip{grid-template-columns:1fr}
      .section-head{flex-direction:column; align-items:flex-start}
      .menu{display:none}
      .mobile-toggle{display:inline-grid; place-items:center}
      .mobile-nav{
        display:none; padding:0 0 14px;
      }
      .mobile-nav.open{display:block}
      .mobile-nav .menu{
        display:grid; gap:10px; padding:14px 0 4px;
      }
      .fields{grid-template-columns:1fr}
      .hero-metrics{grid-template-columns:1fr}
      .nav{padding:12px 0}
    }
    @media (max-width: 640px){
      section{padding:58px 0}
      .hero{padding-top:18px}
      .hero-copy, .hero-side, .panel, .card, .quote, .article, .form-wrap{padding:18px}
      h1{font-size:32px}
      .lead{font-size:15px}
      .hero-actions .btn{width:100%}
      .btn{width:100%}
      .nav-actions{display:none}
    }