:root{
      --bg:#f7f3ea;
      --bg-2:#fffaf1;
      --card:#ffffff;
      --ink:#1f2a37;
      --muted:#556070;
      --line:#e6dccb;
      --accent:#ff7a59;
      --accent-2:#2f6fed;
      --accent-3:#19a974;
      --shadow:0 16px 40px rgba(40, 54, 80, .08);
      --shadow-soft:0 10px 24px rgba(40, 54, 80, .06);
      --radius:20px;
      --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",sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 10% 10%, rgba(255,122,89,.10), transparent 22%),
        radial-gradient(circle at 90% 15%, rgba(47,111,237,.09), transparent 20%),
        radial-gradient(circle at 70% 80%, rgba(25,169,116,.08), transparent 18%),
        linear-gradient(180deg, #faf6ee 0%, #f7f3ea 100%);
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(247,243,234,.82);
      border-bottom:1px solid rgba(230,220,203,.75);
    }
    .nav-wrap{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; flex:0 0 auto}
    .brand-text{min-width:0}
    .brand-text strong{display:block; font-size:1.02rem; letter-spacing:.02em}
    .brand-text span{display:block; font-size:.86rem; color:var(--muted)}
    .nav-toggle{display:none; border:1px solid var(--line); background:var(--card); border-radius:12px; padding:10px 12px; color:var(--ink); box-shadow:var(--shadow-soft)}
    .nav-links{display:flex; align-items:center; gap:8px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{padding:9px 12px; border-radius:999px; color:var(--muted); font-size:.92rem; transition:.2s ease}
    .nav-links a:hover,.nav-links a:focus{background:rgba(255,255,255,.9); color:var(--ink); box-shadow:0 8px 18px rgba(40,54,80,.06)}
    .home-link{font-weight:700; color:var(--accent-2)!important}
    .hero{
      padding:30px 0 22px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.18fr .82fr; gap:22px; align-items:stretch;
    }
    .hero-panel,.hero-side,.card,.section-card,.faq-item,.review-card,.article-card,.quote-card,.tabular{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(230,220,203,.92);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-panel{padding:32px; position:relative; overflow:hidden}
    .hero-panel::before,.hero-panel::after{
      content:""; position:absolute; border-radius:50%; pointer-events:none;
      background:radial-gradient(circle, rgba(255,122,89,.18), transparent 68%);
      width:220px; height:220px; right:-70px; top:-70px;
    }
    .hero-panel::after{width:160px; height:160px; left:-50px; bottom:-50px; top:auto; right:auto; background:radial-gradient(circle, rgba(47,111,237,.15), transparent 68%)}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 12px; border-radius:999px; background:rgba(47,111,237,.08); color:var(--accent-2);
      font-size:.88rem; font-weight:700; margin-bottom:14px;
    }
    h1{font-size:clamp(2rem, 4vw, 3.4rem); line-height:1.08; margin:0 0 14px}
    .hero-lead{margin:0; color:var(--muted); line-height:1.8; font-size:1.03rem; max-width:62ch}
    .hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:22px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:none; border-radius:14px; padding:13px 18px; font-weight:700;
      cursor:pointer; transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
    }
    .btn:hover{transform:translateY(-2px); box-shadow:0 14px 28px rgba(40,54,80,.10)}
    .btn-primary{background:linear-gradient(135deg, var(--accent-2), #244fbe); color:#fff}
    .btn-secondary{background:#fff; color:var(--ink); border:1px solid var(--line)}
    .hero-points{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:24px}
    .point{
      background:rgba(255,255,255,.74); border:1px solid rgba(230,220,203,.85);
      border-radius:16px; padding:14px 14px 12px;
    }
    .point strong{display:block; font-size:1.05rem}
    .point span{display:block; margin-top:6px; font-size:.88rem; color:var(--muted); line-height:1.5}
    .hero-side{padding:22px; display:grid; gap:14px}
    .hero-stat{
      padding:18px; border-radius:18px; background:linear-gradient(180deg, rgba(255,250,241,.95), rgba(255,255,255,.8));
      border:1px solid rgba(230,220,203,.9);
    }
    .hero-stat b{display:block; font-size:1.7rem; letter-spacing:-.02em}
    .hero-stat small{color:var(--muted); display:block; margin-top:6px; line-height:1.5}
    .chip-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .chip{padding:8px 11px; border-radius:999px; background:#fff; border:1px solid var(--line); color:var(--muted); font-size:.88rem}
    .section{padding:16px 0}
    .section-head{display:flex; justify-content:space-between; gap:16px; align-items:end; margin:0 0 16px}
    .section-head h2{margin:0; font-size:clamp(1.4rem, 2.2vw, 2rem)}
    .section-head p{margin:0; color:var(--muted); line-height:1.7; max-width:70ch}
    .grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
    .card{padding:18px}
    .card h3{margin:0 0 10px; font-size:1.05rem}
    .card p, .card li{color:var(--muted); line-height:1.7}
    .metric{display:flex; flex-direction:column; gap:8px}
    .metric strong{font-size:1.7rem}
    .accent-bar{width:54px; height:4px; border-radius:999px; background:linear-gradient(90deg, var(--accent), var(--accent-2)); margin-bottom:12px}
    .steps{counter-reset:step}
    .step{
      position:relative; padding:18px 18px 18px 18px;
    }
    .step::before{
      counter-increment:step;
      content:counter(step, decimal-leading-zero);
      display:inline-flex; align-items:center; justify-content:center;
      width:42px; height:42px; border-radius:14px;
      background:linear-gradient(135deg, rgba(255,122,89,.15), rgba(47,111,237,.12));
      color:var(--ink); font-weight:800; margin-bottom:12px;
    }
    .step h3{margin-top:0}
    .table-wrap{overflow-x:auto; border-radius:18px}
    table{width:100%; border-collapse:separate; border-spacing:0; min-width:860px; background:#fff}
    th,td{padding:14px 14px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top}
    th{background:#fbf7ef; color:var(--ink); font-size:.95rem}
    tr:last-child td{border-bottom:none}
    .badge{display:inline-flex; align-items:center; gap:6px; padding:6px 10px; border-radius:999px; font-size:.84rem; background:rgba(47,111,237,.08); color:var(--accent-2); font-weight:700}
    .rating-box{display:grid; grid-template-columns:1fr auto; gap:14px; align-items:center}
    .stars{color:#f59e0b; font-size:1.2rem; letter-spacing:2px}
    .faq-item{padding:0; overflow:hidden}
    .faq-q{
      width:100%; padding:18px; border:none; background:none; text-align:left; display:flex; justify-content:space-between; gap:12px; align-items:center;
      color:var(--ink); font-weight:700; cursor:pointer;
    }
    .faq-a{padding:0 18px 18px; color:var(--muted); line-height:1.75; display:none}
    .faq-item.active .faq-a{display:block}
    .faq-item.active .faq-q .chev{transform:rotate(180deg)}
    .chev{transition:transform .2s ease}
    .review-card .meta{display:flex; justify-content:space-between; gap:12px; margin-bottom:12px; align-items:center}
    .review-card .role{color:var(--accent-2); font-weight:700; font-size:.92rem}
    .review-card .name{font-weight:800}
    .review-card p{margin:0; line-height:1.75; color:var(--muted)}
    .case-list{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .case{
      padding:0; overflow:hidden;
    }
    .case .thumb{aspect-ratio:16/10; background:linear-gradient(135deg, rgba(47,111,237,.12), rgba(255,122,89,.12)); display:flex; align-items:center; justify-content:center; padding:14px}
    .case .thumb img{width:100%; height:100%; object-fit:cover; border-radius:14px}
    .case .body{padding:16px 18px 18px}
    .split{display:grid; grid-template-columns:1.08fr .92fr; gap:14px}
    .timeline{display:grid; gap:12px}
    .time-item{display:grid; grid-template-columns:auto 1fr; gap:12px; align-items:start}
    .dot{width:12px; height:12px; margin-top:8px; border-radius:50%; background:linear-gradient(135deg, var(--accent), var(--accent-2))}
    .article-list{display:grid; gap:12px}
    .article-card{padding:18px; display:flex; justify-content:space-between; gap:16px; align-items:flex-start}
    .article-card small{color:var(--accent-2); font-weight:700}
    .article-card p{margin:8px 0 0; color:var(--muted); line-height:1.7}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:9px 12px; border-radius:999px; background:#fff; border:1px dashed #d8cbb6; color:#596476}
    .form-grid{display:grid; grid-template-columns:1fr 1fr; gap:12px}
    .form-grid .full{grid-column:1 / -1}
    input,select,textarea{
      width:100%; border:1px solid var(--line); background:#fff; color:var(--ink);
      border-radius:14px; padding:13px 14px; font:inherit; outline:none;
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(47,111,237,.5); box-shadow:0 0 0 4px rgba(47,111,237,.08)}
    textarea{min-height:120px; resize:vertical}
    .footer{
      margin-top:18px; padding:22px 0 26px; border-top:1px solid rgba(230,220,203,.85);
      background:linear-gradient(180deg, rgba(255,250,241,.9), rgba(247,243,234,1));
      color:var(--ink);
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr .9fr; gap:14px; align-items:start}
    .footer a{color:#284fbe}
    .footer small,.footer p,.footer li{color:var(--muted); line-height:1.75}
    .footer .logo-line{display:flex; align-items:center; gap:12px; margin-bottom:10px}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:60; display:grid; gap:10px;
    }
    .float-btn{
      width:54px; height:54px; border-radius:18px; display:flex; align-items:center; justify-content:center;
      background:linear-gradient(135deg, var(--accent-2), #244fbe); color:#fff; box-shadow:0 14px 28px rgba(47,111,237,.25);
      border:none; cursor:pointer;
    }
    .kefu-panel{
      position:fixed; right:16px; bottom:84px; z-index:60; width:min(320px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); border-radius:20px; box-shadow:var(--shadow);
      padding:14px; display:none;
    }
    .kefu-panel.open{display:block}
    .kefu-panel h3{margin:0 0 10px; font-size:1rem}
    .kefu-panel p{margin:8px 0; color:var(--muted); line-height:1.7}
    .kefu-qr{display:flex; gap:12px; align-items:center}
    .kefu-qr img{width:88px; height:88px; object-fit:cover; border-radius:14px; border:1px solid var(--line)}
    .back-top{position:fixed; right:16px; bottom:148px; z-index:60; display:none}
    .back-top.show{display:flex}
    .muted{color:var(--muted)}
    .divider{height:1px; background:var(--line); margin:18px 0}
    .section-card{padding:18px}
    .logo-mini{width:34px;height:34px;object-fit:contain}
    .scroll-reveal{opacity:0; transform:translateY(16px); transition:.5s ease}
    .scroll-reveal.in{opacity:1; transform:none}
    @media (max-width: 980px){
      .hero-grid,.split,.footer-grid,.case-list,.grid-4{grid-template-columns:1fr 1fr}
      .grid-3{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 720px){
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none; width:100%; padding:12px 0 2px; justify-content:flex-start;
      }
      .nav-links.open{display:flex}
      .nav-wrap{flex-wrap:wrap}
      .hero-grid,.split,.footer-grid,.case-list,.grid-4,.grid-3,.grid-2,.hero-points,.form-grid{grid-template-columns:1fr}
      .hero-panel{padding:22px}
      .rating-box{grid-template-columns:1fr}
      .section-head{flex-direction:column; align-items:flex-start}
      .floating{right:12px; bottom:12px}
      .back-top{right:12px; bottom:140px}
    }