:root{
      --bg:#f7f6f2;
      --bg2:#fffdf8;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#5b6472;
      --line:#e7e2d9;
      --brand:#ff4d6d;
      --brand2:#1e88ff;
      --brand3:#ffb703;
      --shadow:0 18px 50px rgba(27, 39, 51, .08);
      --shadow2:0 10px 24px rgba(255, 77, 109, .12);
      --radius:22px;
      --radius2:16px;
      --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(255,77,109,.11), transparent 28%),
        radial-gradient(circle at 90% 10%, rgba(30,136,255,.10), transparent 24%),
        linear-gradient(180deg, #fff 0%, var(--bg) 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(255,255,255,.84);
      border-bottom:1px solid rgba(231,226,217,.9);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:74px;
    }
    .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:var(--shadow2);padding:6px}
    .brand-text{display:flex;flex-direction:column;line-height:1.1}
    .brand-text strong{font-size:1.02rem}
    .brand-text span{font-size:.84rem;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:var(--text);padding:8px 10px;border-radius:999px;transition:.25s ease}
    .nav-links a:hover,.nav-links a:focus-visible{background:rgba(30,136,255,.08);color:var(--brand2);outline:none}
    .nav-cta,.btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
    }
    .nav-cta{background:linear-gradient(135deg,var(--brand),#ff7a59);color:#fff;box-shadow:0 12px 26px rgba(255,77,109,.22)}
    .nav-cta:hover,.btn:hover{transform:translateY(-2px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:36px 0 18px}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch
    }
    .hero-main,.hero-side,.section-card,.card,.faq-item,.review,.article,.benefit,.metric,.compare-box,.form-card,.price-box,.timeline-item{
      background:var(--card);border:1px solid rgba(231,226,217,.95);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.9
    }
    .hero-main:before{width:220px;height:220px;background:radial-gradient(circle, rgba(255,77,109,.22), transparent 66%);right:-70px;top:-50px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle, rgba(30,136,255,.18), transparent 66%);right:70px;bottom:-70px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,183,3,.14);color:#8a5b00;font-size:.92rem;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(2rem,5vw,3.8rem);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:1.04rem;line-height:1.8;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn-primary{background:linear-gradient(135deg,var(--brand2),#7c4dff);color:#fff;box-shadow:0 14px 28px rgba(30,136,255,.18)}
    .btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .mini{
      padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff, #fff7f5);
      border:1px solid #f1e5de
    }
    .mini strong{display:block;font-size:1.05rem;margin-bottom:6px}
    .mini span{color:var(--muted);font-size:.92rem;line-height:1.5}
    .hero-side{padding:24px;display:flex;flex-direction:column;gap:14px;justify-content:space-between;background:linear-gradient(180deg,#fff, #fff8ef)}
    .side-chip{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.9rem;color:#334155}
    .side-panel{padding:18px;border-radius:18px;background:linear-gradient(135deg, rgba(255,77,109,.08), rgba(30,136,255,.08));border:1px solid rgba(30,136,255,.12)}
    .side-panel h3{margin:0 0 10px;font-size:1.06rem}
    .side-panel p{margin:0;color:var(--muted);line-height:1.7}
    .side-links{display:grid;gap:10px;margin-top:12px}
    .side-links a{padding:11px 14px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(1.5rem,3vw,2.25rem)}
    .section-head p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .metric{padding:20px}
    .metric strong{display:block;font-size:1.55rem;margin-bottom:8px;color:#111827}
    .metric span{color:var(--muted);line-height:1.6}
    .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,.benefit,.article,.review,.faq-item,.compare-box,.form-card,.price-box,.timeline-item{padding:20px}
    .card h3,.benefit h3,.article h3,.review h3,.price-box h3{margin:0 0 10px;font-size:1.08rem}
    .card p,.benefit p,.article p,.review p,.price-box p{margin:0;color:var(--muted);line-height:1.72}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .tag{display:inline-flex;padding:7px 10px;border-radius:999px;background:#f7f8fc;border:1px solid #e8edf4;color:#445; font-size:.88rem}
    .process{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{
      padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff, #fffaf4);border:1px solid var(--line);position:relative
    }
    .step .num{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),#ff8a5b);color:#fff;font-weight:800;margin-bottom:12px}
    .step h3{margin:0 0 8px}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:880px}
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid #eef0f3;vertical-align:top}
    th{background:#faf8f4;font-size:.96rem}
    td{color:#374151;line-height:1.65}
    .highlight{color:#0f766e;font-weight:700}
    .compare-note{margin-top:12px;color:var(--muted);line-height:1.7}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;border:0;background:transparent;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;text-align:left;cursor:pointer;color:var(--text);font:inherit
    }
    .faq-q strong{font-size:1.02rem}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-item.open .faq-a{padding-bottom:18px}
    .faq-item.open .faq-icon{transform:rotate(45deg)}
    .faq-a p{margin:0;color:var(--muted);line-height:1.75}
    .faq-icon{transition:transform .25s ease;font-size:1.4rem;color:var(--brand)}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
    .stars{color:#f59e0b;font-weight:800}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .article time{display:inline-block;margin-bottom:10px;color:var(--brand2);font-weight:700;font-size:.9rem}
    .form-card form{display:grid;gap:12px}
    .field{display:grid;gap:8px}
    label{font-weight:700;font-size:.94rem}
    input,select,textarea{
      width:100%;border:1px solid #d9dee7;background:#fff;border-radius:14px;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(30,136,255,.55);box-shadow:0 0 0 4px rgba(30,136,255,.10)}
    textarea{min-height:120px;resize:vertical}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .note{font-size:.92rem;color:var(--muted);line-height:1.7}
    .foot{
      margin-top:18px;padding:24px 0 18px;border-top:1px solid rgba(231,226,217,.95);
      background:linear-gradient(180deg, rgba(255,255,255,.56), rgba(255,253,248,.92))
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:16px}
    .foot h3{margin:0 0 12px;font-size:1.04rem}
    .foot p,.foot a,.foot li{color:#334155;line-height:1.8}
    .contact-list,.link-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
    .qr-box{display:flex;gap:14px;align-items:center;padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .qr-box img{width:104px;height:104px;object-fit:cover;border-radius:14px;border:1px solid var(--line)}
    .bottom-bar{margin-top:16px;padding-top:16px;border-top:1px solid #e8e2d8;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#4b5563}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),#ff7a59);color:#fff;box-shadow:0 16px 28px rgba(255,77,109,.22)
    }
    .to-top{background:linear-gradient(135deg,var(--brand2),#7c4dff)}
    .fab-panel{
      position:fixed;right:16px;bottom:80px;z-index:60;width:min(340px,calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:16px;display:none
    }
    .fab-panel.open{display:block;animation:fadeUp .25s ease}
    .fab-panel .qr-box{margin-top:10px}
    .mobile-only{display:none}
    .split-info{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start}
    .timeline-item .dot{width:14px;height:14px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));margin-top:6px;box-shadow:0 0 0 6px rgba(255,77,109,.08)}
    .price-box{background:linear-gradient(180deg,#fff, #fff8f7)}
    .price-box strong{font-size:1.55rem}
    .service-net{display:flex;flex-wrap:wrap;gap:10px}
    .service-net .chip{background:#fff7f4}
    .scroll-snap{scroll-margin-top:92px}
    @keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.metrics,.grid-3,.grid-2,.process,.reviews,.articles,.footer-grid,.split-info{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav.open .nav-links{
        display:flex;position:absolute;left:16px;right:16px;top:74px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;gap:8px
      }
      .nav{position:relative}
      .desktop-cta{display:none}
      .mobile-only{display:inline-flex}
    }
    @media (max-width: 640px){
      .hero-main,.hero-side,.card,.benefit,.article,.review,.faq-item,.compare-box,.form-card,.price-box,.timeline-item,.metric{padding:16px}
      .hero-main{padding:22px}
      .section{padding:14px 0}
      .container{width:min(var(--container),calc(100% - 24px))}
      .nav.open .nav-links{top:70px}
    }