:root{
  --bg:#fffaf4;
  --card:#ffffff;
  --card2:#fff5e6;
  --line:#eadfcc;
  --text:#1f2937;
  --muted:#6b7280;
  --brand:#ff7a59;
  --brand2:#ffb347;
  --brand3:#5b7cfa;
  --shadow:0 18px 45px rgba(31,41,55,.08);
  --radius:22px;
}
*{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(255,122,89,.10), transparent 28%),
radial-gradient(circle at right 20%, rgba(91,124,250,.10), transparent 22%),
linear-gradient(180deg,#fffdf8 0%, #fffaf4 40%, #fffefc 100%);
color:var(--text)}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{width:min(1160px, calc(100% - 32px)); margin:0 auto}
header{position:sticky;top:0;z-index:50;background:rgba(255,250,244,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(234,223,204,.85)}
.navbar{display:flex;align-items:center;justify-content:space-between;gap:18px;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:#fff;padding:4px;box-shadow:0 8px 20px rgba(0,0,0,.08)}
.brand h2{margin:0;font-size:18px}
.brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
.nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{font-size:14px;color:#374151;padding:8px 10px;border-radius:10px}
.nav-links a:hover,.nav-links a.active{background:#fff;color:#111827;box-shadow:0 8px 18px rgba(31,41,55,.08)}
.nav-actions{display:flex;align-items:center;gap:10px}
.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:.25s ease;white-space:nowrap}
.btn:hover{transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,41,55,.12)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
.btn-secondary{background:#fff;color:#111827;border:1px solid var(--line)}
.menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.hero{padding:34px 0 18px}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;align-items:stretch}
.hero-main{background:linear-gradient(135deg,#fff 0%, #fff7ef 52%, #fff 100%);border:1px solid rgba(234,223,204,.9);border-radius:28px;padding:30px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero-main::before,.hero-main::after{content:"";position:absolute;border-radius:999px;filter:blur(10px);opacity:.8}
.hero-main::before{width:180px;height:180px;background:rgba(255,122,89,.12);top:-40px;right:-40px}
.hero-main::after{width:120px;height:120px;background:rgba(91,124,250,.12);bottom:-30px;left:-20px}
.kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#7c2d12;font-size:13px;font-weight:700}
h1{margin:16px 0 12px;font-size:clamp(32px,5vw,54px);line-height:1.06;letter-spacing:-.03em}
.hero-main p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:22px}
.point{background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:18px;padding:14px}
.point strong{display:block;font-size:15px;margin-bottom:4px}
.point span{color:var(--muted);font-size:13px;line-height:1.6}
.hero-side{display:grid;gap:14px}
.side-card{background:linear-gradient(180deg,#fff 0%,#fff7f0 100%);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}
.side-card h3{margin:0 0 10px;font-size:18px}
.side-card ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.8}
.metrics,.service-grid,.process-grid,.compare-grid,.case-grid,.review-grid,.article-grid,.network-grid,.tag-cloud,.faq-wrap{padding:16px 0 0}
.section{padding:26px 0}
.section h2{margin:0 0 12px;font-size:28px}
.section p.lead{margin:0 0 20px;color:var(--muted);line-height:1.8}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.metric,.card,.mini-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 10px 24px rgba(31,41,55,.05);transition:.25s ease}
.metric:hover,.card:hover,.mini-card:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(31,41,55,.09)}
.metric strong{display:block;font-size:28px;margin-bottom:8px;color:#111827}
.metric span{color:var(--muted);line-height:1.6}
.badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#fff4ea;color:#b45309;font-size:12px;font-weight:700;border:1px solid #fde1c7}
.service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.card h3,.mini-card h3{margin:8px 0 8px;font-size:18px}
.card p,.mini-card p,.card li{color:var(--muted);line-height:1.75}
.card ul{margin:0;padding-left:18px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.timeline{display:grid;gap:12px}
.step{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}
.step-num{flex:0 0 38px;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;display:grid;place-items:center;font-weight:800}
.step h3{margin:0 0 6px;font-size:16px}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}
th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}
th{background:#fff7ee}
tr:last-child td{border-bottom:0}
.note{color:var(--muted);font-size:13px;line-height:1.7}
.five-star{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.star{color:#f59e0b;font-size:18px}
.tag-cloud{display:flex;gap:10px;flex-wrap:wrap}
.tag{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#374151;font-size:13px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.faq-q{width:100%;text-align:left;background:#fff;border:0;padding:16px 18px;font-size:15px;font-weight:700;color:#111827;display:flex;justify-content:space-between;align-items:center;cursor:pointer}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px;color:var(--muted);line-height:1.75}
.faq-item.open .faq-a{padding-bottom:16px;max-height:220px}
.form-card{background:linear-gradient(180deg,#fff 0%,#fff8f1 100%);border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.input,.select,textarea{width:100%;border:1px solid #e7ddce;background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none}
textarea{min-height:128px;resize:vertical}
.input:focus,.select:focus,textarea:focus{border-color:#f59e0b;box-shadow:0 0 0 4px rgba(245,158,11,.12)}
.full{grid-column:1/-1}
.footer{background:#fff;border-top:1px solid var(--line);margin-top:26px;color:#374151}
.footer a{color:#1f2937}
.footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px;padding:24px 0}
.footer small{color:var(--muted);line-height:1.7}
.qr{display:flex;gap:16px;align-items:center}
.qr img{width:118px;height:118px;object-fit:cover;border-radius:16px;border:1px solid var(--line);background:#fff}
.float-actions{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
.float-actions a,.float-actions button{width:50px;height:50px;border-radius:50%;border:0;display:grid;place-items:center;box-shadow:var(--shadow);cursor:pointer}
.float-actions a{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
.float-actions button{background:#fff;color:#111827;border:1px solid var(--line)}
.reviews-head{display:flex;justify-content:space-between;align-items:end;gap:12px;flex-wrap:wrap}
.review-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}
.review-card strong{display:block;margin-bottom:8px}
.review-card p{margin:0;color:var(--muted);line-height:1.75}
.review-meta{margin-top:12px;color:#7c2d12;font-size:13px;font-weight:700}
.article-list{display:grid;gap:12px}
.article-item{display:flex;justify-content:space-between;gap:12px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:18px}
.article-item span{color:var(--muted)}
.subtle{color:var(--muted)}
.mobile-only{display:none}
@media (max-width: 980px){
  .hero-grid,.split,.footer-grid,.service-grid,.grid-4{grid-template-columns:1fr 1fr}
}
@media (max-width: 760px){
  .nav-links,.nav-actions .btn-secondary{display:none}
  .menu-toggle{display:inline-grid}
  .mobile-only{display:flex}
  .hero-grid,.split,.footer-grid,.service-grid,.grid-4,.form-grid,.review-grid,.article-grid,.network-grid{grid-template-columns:1fr}
  .hero-main{padding:22px}
  .hero-points{grid-template-columns:1fr}
  .section h2{font-size:24px}
  .navbar{padding:12px 0}
  .brand h2{font-size:16px}
}
.reveal{opacity:0;transform:translateY(14px);transition:.6s ease}
.reveal.in{opacity:1;transform:none}
.mobile-panel{display:none;padding:0 0 14px}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:10px 0;color:#374151;border-top:1px dashed #eadfcc}