:root{
      --bg:#f7f4ee;
      --bg2:#fdfbf7;
      --card:#ffffff;
      --line:#e7dfd2;
      --text:#1f2a37;
      --muted:#627084;
      --brand:#6a5cff;
      --brand2:#1fb6a6;
      --brand3:#ff8a5b;
      --accent:#ffd46a;
      --shadow:0 18px 40px rgba(57, 68, 88, .10);
      --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, 212, 106, .18), transparent 28%),
      radial-gradient(circle at 80% 8%, rgba(106, 92, 255, .12), transparent 26%),
      linear-gradient(180deg, #fffdf9 0%, var(--bg) 35%, #f8f6f1 100%);
      color:var(--text);line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(247,244,238,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(231,223,210,.7)}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:78px}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:0 8px 18px rgba(0,0,0,.06)}
    .brand strong{display:block;font-size:1.02rem;line-height:1.2}
    .brand span{display:block;font-size:.82rem;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    .nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:.95rem;color:#344255;padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav a:hover{background:rgba(106,92,255,.08);color:#241f56}
    .nav .cta{background:linear-gradient(135deg,var(--brand),#8a7dff);color:#fff;box-shadow:0 10px 22px rgba(106,92,255,.22)}
    .hero{padding:34px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.card,.panel,.faq-item,.review,.post,.metric,.timeline li,.price-item{background:rgba(255,255,255,.78);border:1px solid rgba(231,223,210,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px}
    .kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(31,182,166,.12);color:#0e6a61;border:1px solid rgba(31,182,166,.18);padding:7px 12px;border-radius:999px;font-size:.92rem}
    h1,h2,h3,p{margin:0}
    h1{font-size:clamp(2rem,4vw,3.7rem);line-height:1.08;margin-top:16px;letter-spacing:-.03em}
    .lead{margin-top:16px;color:var(--muted);font-size:1.03rem;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.22s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#4f86ff);color:#fff;box-shadow:0 16px 30px rgba(106,92,255,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover,.nav a:hover,.card:hover,.review:hover,.post:hover,.faq-item summary:hover,.metric:hover,.timeline li:hover,.price-item:hover{transform:translateY(-2px)}
    .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:24px}
    .point{padding:14px 16px;border-radius:18px;background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(250,246,238,.98));border:1px solid #eee4d6}
    .point b{display:block;font-size:1.02rem}
    .point span{display:block;color:var(--muted);font-size:.92rem;margin-top:4px}
    .hero-side{padding:22px;display:grid;gap:14px}
    .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric{padding:18px}
    .metric strong{display:block;font-size:1.35rem}
    .metric span{display:block;color:var(--muted);font-size:.9rem;margin-top:4px}
    .mini-card{padding:16px;border-radius:18px;background:linear-gradient(135deg, rgba(106,92,255,.08), rgba(255,138,91,.08));border:1px solid rgba(106,92,255,.12)}
    .section{padding:18px 0 4px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-head h2{font-size:clamp(1.45rem,2.4vw,2.1rem)}
    .section-head p{color:var(--muted);max-width:70ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{padding:20px}
    .card h3{font-size:1.08rem;margin-bottom:8px}
    .card p,.card li{color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#314155;font-size:.92rem}
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative;padding:18px 18px 16px;background:#fff;border:1px solid var(--line);border-radius:20px}
    .step:before{content:attr(data-step);display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--brand2),#4dd6c6);color:#fff;font-weight:800;margin-bottom:12px}
    .comparison{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #eee;color:var(--text);text-align:left;vertical-align:top}
    th{background:#fbf8f2;font-size:.95rem}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:rgba(31,182,166,.12);color:#0e6a61;font-size:.88rem}
    .badge-warn{background:rgba(255,138,91,.12);color:#9b451a}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:2px 16px}
    .faq-item summary{list-style:none;cursor:pointer;padding:14px 0;font-weight:700}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item p{padding:0 0 14px;color:var(--muted)}
    .reviews,.posts,.price-grid,.timeline{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review{padding:18px}
    .review .role{color:#6c5cff;font-weight:700;font-size:.92rem;margin-bottom:8px}
    .review p{color:var(--muted)}
    .review .name{margin-top:12px;font-weight:700}
    .posts .post{padding:18px}
    .post time{display:block;color:#8a93a2;font-size:.88rem;margin-bottom:8px}
    .post h3{margin-bottom:8px}
    .post a{display:inline-flex;margin-top:12px;color:#4d5fff;font-weight:700}
    .panel{padding:20px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-weight:700;font-size:.95rem}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 14px;font:inherit;color:var(--text);outline:none}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#8a7dff;box-shadow:0 0 0 4px rgba(106,92,255,.1)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:8px}
    .note{color:var(--muted);font-size:.92rem}
    .footer{margin-top:18px;background:#f0eadf;border-top:1px solid #e0d7c7;color:#233042}
    .footer .container{padding:26px 0}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .8fr;gap:18px}
    .footer a{color:#24324a}
    .footer .small{color:#516173;font-size:.93rem}
    .friend-links,.footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .friend-links a,.footer-links a{padding:7px 10px;border-radius:999px;background:#fff;border:1px solid #ddcfbd}
    .floating{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{border:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;min-width:48px;height:48px;border-radius:16px;box-shadow:0 14px 26px rgba(0,0,0,.14)}
    .floating .home{background:linear-gradient(135deg,var(--brand3),#ffb36b);color:#fff}
    .floating .top{background:#fff;color:#243042;border:1px solid var(--line)}
    .floating .chat{background:linear-gradient(135deg,var(--brand2),#47c1ff);color:#fff}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .scroll-reveal.is-visible{opacity:1;transform:none}
    .timeline li,.price-item{padding:18px;list-style:none}
    .timeline{padding:0;margin:0}
    .price-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .price-item strong{display:block;font-size:1.22rem;margin-bottom:8px}
    .side-list{display:grid;gap:10px}
    .side-list div{padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .hero-image-stack{display:grid;gap:12px}
    .hero-image-stack .img-card{padding:16px;border-radius:20px;background:#fff;border:1px solid var(--line)}
    .ai-page-home-link{font-weight:800}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.workflow,.reviews,.posts,.price-grid,.timeline,.footer-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .nav-toggle{display:inline-flex}
      .nav{display:none;position:absolute;top:78px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 16px;flex-direction:column;align-items:flex-start;box-shadow:0 18px 30px rgba(0,0,0,.06)}
      .nav.open{display:flex}
      .hero-main{padding:24px}
      .hero-points,.stat-grid,.form-grid{grid-template-columns:1fr}
      .mobile-only{display:block}
    }
    @media (max-width: 560px){
      .container{width:min(100% - 22px, var(--container))}
      .header-inner{min-height:70px}
      .brand strong{font-size:.96rem}
      .brand span{font-size:.78rem}
      h1{font-size:1.9rem}
      .btn{width:100%}
      .hero-actions,.form-actions{flex-direction:column;align-items:stretch}
      .floating{right:12px;bottom:12px}
    }