:root{
      --bg:#0d0f17;
      --bg2:#131726;
      --panel:#171c2b;
      --card:#1b2133;
      --card2:#20273b;
      --line:rgba(255,255,255,.09);
      --text:#e9ecf6;
      --muted:#a8b0c8;
      --brand:#ff4fd8;
      --brand2:#8b5cf6;
      --accent:#2be4ff;
      --good:#55f0b5;
      --warn:#ffd166;
      --shadow:0 18px 50px rgba(0,0,0,.28);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      background:
        radial-gradient(circle at 20% 10%, rgba(255,79,216,.18), transparent 30%),
        radial-gradient(circle at 80% 0%, rgba(43,228,255,.12), transparent 25%),
        linear-gradient(180deg, #0b0d14 0%, #111527 50%, #0f1220 100%);
      color:var(--text);
      line-height:1.6;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:40;
      backdrop-filter: blur(16px);
      background:rgba(11,13,20,.72);
      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;object-fit:contain;border-radius:12px;background:rgba(255,255,255,.06);padding:6px;border:1px solid var(--line)}
    .brand strong{display:block;font-size:1.02rem;letter-spacing:.4px}
    .brand span{display:block;font-size:.82rem;color:var(--muted)}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);
      width:44px;height:44px;border-radius:14px;cursor:pointer;
    }
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{color:var(--muted);font-size:.95rem}
    .nav-links a:hover{color:#fff}
    .home-btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:11px 16px;border-radius:999px;
      background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:#fff;font-weight:700;box-shadow:0 12px 26px rgba(255,79,216,.25);
    }
    main{padding-bottom:20px}
    section{scroll-margin-top:92px}
    .hero{
      padding:38px 0 18px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.35fr .9fr;gap:24px;align-items:stretch
    }
    .hero-copy,.hero-side,.panel,.card,.faq-item,.timeline li,.review,.article-item,.form-wrap,.table-wrap,.compare-card{
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      border:1px solid var(--line);
      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);color:#ffb7ef;border:1px solid rgba(255,79,216,.24);
      font-size:.88rem;margin-bottom:16px;
    }
    h1{margin:0 0 14px;font-size:clamp(2rem,4.6vw,4rem);line-height:1.08;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:1.03rem;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:14px;padding:13px 18px;border:1px solid transparent;
      font-weight:700;transition:.25s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ff7c6b);color:#fff}
    .btn-secondary{background:rgba(255,255,255,.05);color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
    .metric{padding:16px;border-radius:18px;background:rgba(15,18,32,.72);border:1px solid rgba(255,255,255,.07)}
    .metric strong{display:block;font-size:1.25rem;margin-bottom:6px;color:#fff}
    .metric span{display:block;color:var(--muted);font-size:.9rem}
    .hero-side{padding:22px;display:grid;gap:14px}
    .side-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
    .side-top h2{margin:0;font-size:1.18rem}
    .pill{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(43,228,255,.12);border:1px solid rgba(43,228,255,.22);color:#bff7ff;font-size:.82rem}
    .service-tags{display:flex;flex-wrap:wrap;gap:10px}
    .service-tags span,.tag-cloud span{
      padding:9px 12px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:#f0f3ff;font-size:.86rem
    }
    .mini-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .mini-list li{display:flex;gap:10px;align-items:flex-start;color:var(--muted)}
    .mini-list li i{font-style:normal;color:var(--good)}
    .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(1.5rem,2.4vw,2.3rem)}
    .section-head p{margin:0;color:var(--muted);max-width:68ch}
    .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{padding:20px}
    .card h3{margin:10px 0 8px;font-size:1.08rem}
    .card p{margin:0;color:var(--muted)}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(255,79,216,.18),rgba(43,228,255,.18));
      border:1px solid rgba(255,255,255,.08);color:#fff;font-size:1.15rem
    }
    .matrix{
      display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start
    }
    .panel{padding:22px}
    .steps{counter-reset:step;display:grid;gap:12px}
    .step{display:flex;gap:14px;align-items:flex-start;padding:14px 16px;border-radius:18px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
    .step:before{
      counter-increment:step;content:counter(step);
      width:32px;height:32px;border-radius:10px;display:grid;place-items:center;flex:none;
      background:linear-gradient(135deg,var(--brand2),var(--brand));color:#fff;font-weight:800
    }
    .step strong{display:block;margin-bottom:4px}
    .step span{color:var(--muted);font-size:.94rem}
    .table-wrap{overflow-x:auto}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 12px;border-bottom:1px solid rgba(255,255,255,.08);text-align:left;vertical-align:top}
    th{color:#fff;background:rgba(255,255,255,.04);font-weight:700}
    td{color:var(--muted)}
    .star{color:#ffd166;font-weight:700}
    .compare-badge{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(255,209,102,.12);border:1px solid rgba(255,209,102,.2);color:#ffe8a3;font-size:.84rem}
    .timeline{list-style:none;margin:0;padding:0;display:grid;gap:12px}
    .timeline li{padding:16px}
    .timeline b{display:block;margin-bottom:5px}
    .timeline p{margin:0;color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .reviews,.articles,.faq,.contact{display:grid;gap:16px}
    .review h3,.article-item h3,.faq-item summary{margin:0}
    .review .role{color:#ffb7ef;font-size:.9rem;margin-bottom:10px}
    .review p,.article-item p{margin:0;color:var(--muted)}
    .article-item{padding:18px}
    .article-item a{color:#fff;font-weight:700}
    .faq-item{padding:0;overflow:hidden}
    .faq-item summary{
      list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;display:flex;justify-content:space-between;gap:16px;align-items:center
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary span{color:#fff}
    .faq-item .answer{padding:0 20px 18px;color:var(--muted)}
    .faq-item[open]{background:rgba(255,255,255,.06)}
    .form-wrap{padding:20px}
    form{display:grid;gap:14px}
    .field-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:grid;gap:8px;font-size:.92rem;color:#e9ecf6}
    input,select,textarea{
      width:100%;border-radius:14px;border:1px solid rgba(255,255,255,.12);
      background:rgba(10,13,24,.72);color:var(--text);padding:13px 14px;outline:none
    }
    textarea{min-height:130px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(255,79,216,.45);box-shadow:0 0 0 4px rgba(255,79,216,.12)}
    .submit{
      display:inline-flex;align-items:center;justify-content:center;
      padding:14px 18px;border:none;border-radius:14px;font-weight:800;color:#fff;
      background:linear-gradient(135deg,var(--brand),#ff7c6b);cursor:pointer
    }
    .footer{
      padding:28px 0 34px;margin-top:10px;border-top:1px solid rgba(255,255,255,.08);
      background:rgba(7,9,16,.68)
    }
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .footer a{color:#dce2ff}
    .copyright{margin-top:18px;color:#9ea7c4;font-size:.9rem}
    .kefu-float,.top-float{
      position:fixed;right:18px;z-index:50;display:grid;gap:10px
    }
    .kefu-float{bottom:84px}
    .top-float{bottom:18px}
    .float-btn{
      width:50px;height:50px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand2),var(--brand));color:#fff;
      box-shadow:0 12px 28px rgba(0,0,0,.28);border:1px solid rgba(255,255,255,.1)
    }
    .floating-card{
      position:absolute;right:60px;bottom:0;transform:translateY(0);
      width:220px;padding:12px;background:rgba(16,20,34,.96);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);display:none
    }
    .kefu-float:hover .floating-card{display:block}
    .floating-card img{border-radius:14px;background:#fff;padding:6px}
    .floating-card p{margin:10px 0 0;color:var(--muted);font-size:.9rem}
    .note{color:var(--muted);font-size:.92rem}
    .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .cluster{display:flex;flex-wrap:wrap;gap:10px}
    .cluster a{padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:#eef1ff}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.matrix,.footer-grid,.grid-4,.grid-3,.grid-2,.article-list{grid-template-columns:1fr}
      .nav-toggle{display:inline-grid;place-items:center}
      .nav-links{
        position:absolute;left:16px;right:16px;top:66px;display:none;flex-direction:column;align-items:stretch;
        padding:14px;background:rgba(11,13,20,.96);border:1px solid var(--line);border-radius:18px
      }
      .nav-links.open{display:flex}
      .nav-links a,.nav-links .home-btn{width:100%;justify-content:center}
      .hero-copy{padding:24px}
      .field-grid{grid-template-columns:1fr}
      .hero-metrics{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .floating-card{right:0;bottom:60px}
    }