:root{
      --bg:#0f1020;
      --bg2:#171833;
      --card:#171a2f;
      --card2:#1c2040;
      --line:rgba(255,255,255,.10);
      --text:#f4f1ff;
      --muted:#c8c1df;
      --accent:#ff4fd8;
      --accent2:#7c5cff;
      --accent3:#28e1ff;
      --warm:#ffcb6b;
      --shadow:0 20px 60px rgba(0,0,0,.28);
      --radius:22px;
      --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;
      background:
        radial-gradient(circle at top left, rgba(255,79,216,.18), transparent 28%),
        radial-gradient(circle at top right, rgba(124,92,255,.20), transparent 30%),
        linear-gradient(180deg, #0b0c18 0%, #10142a 42%, #0d1020 100%);
      color:var(--text);
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(16px);
      background:rgba(10,12,24,.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:4px}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:1rem;letter-spacing:.5px}
    .brand-text span{display:block;font-size:.82rem;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.92rem;color:#e6defc;opacity:.86}
    .nav-links a:hover,.nav-links a:focus{color:#fff;opacity:1}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;padding:11px 16px;
      font-weight:700;cursor:pointer;transition:.25s ease;
      box-shadow:none;white-space:nowrap;
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--accent),var(--accent2));
      color:#fff;box-shadow:0 14px 30px rgba(255,79,216,.22);
    }
    .btn-primary:hover{transform:translateY(-2px);filter:saturate(1.06)}
    .btn-ghost{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12);color:#fff}
    .btn-ghost:hover{background:rgba(255,255,255,.09);transform:translateY(-1px)}
    .menu-btn{display:none;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:#fff;border-radius:12px;padding:10px 12px}
    .hero{padding:36px 0 22px}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.timeline li,.case,.article,.quote,.form-wrap,.price-box,.compare,.help-box{
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-main{padding:32px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:999px;filter:blur(4px);pointer-events:none
    }
    .hero-main:before{width:180px;height:180px;background:rgba(255,79,216,.16);right:-45px;top:-30px}
    .hero-main:after{width:240px;height:240px;background:rgba(40,225,255,.13);left:-100px;bottom:-90px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);color:#f2d7ff;font-size:.88rem}
    h1{margin:16px 0 14px;font-size:clamp(2rem,5vw,4rem);line-height:1.06;letter-spacing:-.02em}
    .lead{font-size:1.03rem;color:var(--muted);max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .mini-stat{padding:14px 14px 12px;border-radius:18px;background:rgba(10,12,24,.36);border:1px solid rgba(255,255,255,.08)}
    .mini-stat strong{display:block;font-size:1.18rem;color:#fff}
    .mini-stat span{display:block;font-size:.86rem;color:var(--muted)}
    .hero-side{padding:22px;display:grid;gap:14px}
    .hero-side .panel{padding:18px;background:rgba(255,255,255,.045)}
    .panel h3,.section-title h2{margin:0 0 10px;font-size:1.25rem}
    .panel p,.card p,.review p,.case p,.article p,.help-box p,.quote p{margin:0;color:var(--muted)}
    .section{padding:20px 0 18px}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-title p{margin:0;color:var(--muted);max-width:70ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .card{padding:20px}
    .card h3{margin:10px 0 8px;font-size:1.08rem}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(255,79,216,.22), rgba(124,92,255,.2));
      border:1px solid rgba(255,255,255,.10);font-size:1.1rem
    }
    .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,.09);color:#f3ebff;font-size:.88rem}
    .workflow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
    .step{padding:18px;border-radius:18px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08)}
    .step b{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:10px;background:linear-gradient(135deg,var(--accent3),var(--accent2));color:#06101a;margin-bottom:10px}
    table{width:100%;border-collapse:collapse}
    th,td{padding:14px 12px;border-bottom:1px solid rgba(255,255,255,.10);vertical-align:top}
    th{color:#fff;text-align:left;background:rgba(255,255,255,.04)}
    td{color:var(--muted)}
    .table-wrap{overflow-x:auto;border-radius:18px}
    .review{padding:18px}
    .review .meta{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:10px}
    .stars{color:#ffd56a;letter-spacing:2px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;
      background:transparent;border:0;color:#fff;padding:18px 20px;font-size:1rem;text-align:left;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px;color:var(--muted)}
    .faq-item.open .faq-a{max-height:180px;padding-bottom:18px}
    .article,.case,.help-box,.quote,.price-box,.compare,.form-wrap{padding:20px}
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .article a{display:inline-flex;margin-top:10px;color:#ffd7ff}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .form-grid .full{grid-column:1/-1}
    input,select,textarea{
      width:100%;border-radius:14px;border:1px solid rgba(255,255,255,.10);
      background:rgba(7,10,22,.55);color:#fff;padding:13px 14px;font:inherit;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input::placeholder,textarea::placeholder{color:#8f96b8}
    input:focus,select:focus,textarea:focus{border-color:rgba(255,79,216,.55);box-shadow:0 0 0 3px rgba(255,79,216,.12)}
    .footer{
      margin-top:16px;padding:24px 0 30px;border-top:1px solid rgba(255,255,255,.08);
      color:#d9d2f0;background:rgba(7,8,16,.45)
    }
    .footer a{color:#ffe0ff}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px}
    .contact-line{display:flex;flex-wrap:wrap;gap:10px;color:var(--muted)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;
      box-shadow:0 14px 30px rgba(124,92,255,.28);border:0;cursor:pointer
    }
    .backtop{display:none}
    .mobile-only{display:none}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.in{opacity:1;transform:none}
    .service-banner{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .service-banner .card{min-height:100%}
    .badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
    .badge{padding:6px 10px;border-radius:999px;background:rgba(40,225,255,.10);border:1px solid rgba(40,225,255,.18);color:#dffcff;font-size:.84rem}
    .compare .score{font-size:2rem;font-weight:800;color:#fff}
    .split-note{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .map-box{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
    .map-box .tag{background:rgba(255,255,255,.04)}
    .link-list{display:flex;flex-wrap:wrap;gap:10px}
    .link-list a{padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08)}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.workflow,.article-list,.footer-grid,.service-banner,.split-note,.grid-3,.grid-2{grid-template-columns:1fr 1fr}
      .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
      .workflow{grid-template-columns:repeat(2,minmax(0,1fr))}
      .article-list{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .map-box{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 760px){
      .nav-links,.nav-cta .btn-ghost{display:none}
      .menu-btn{display:inline-flex}
      .mobile-only{display:inline-flex}
      .hero-grid,.grid-4,.grid-3,.grid-2,.workflow,.article-list,.service-banner,.split-note{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .section-title{align-items:flex-start;flex-direction:column}
      .table-wrap{border:1px solid rgba(255,255,255,.08)}
      .form-grid{grid-template-columns:1fr}
      .nav{padding:12px 0}
      .floating{right:12px;bottom:12px}
    }