:root{
  --bg:#f6f7fb;
  --panel:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --accent:#111827;
  --accent-soft:#eef2ff;
  --radius:22px;
  --shadow:0 12px 40px rgba(17,24,39,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#fafbff 0%,#f5f6fb 100%);
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site{
  min-height:100vh;
}
.topbar{
  position:sticky;top:0;z-index:20;
  backdrop-filter: blur(16px);
  background:rgba(246,247,251,.78);
  border-bottom:1px solid rgba(229,231,235,.8);
}
.wrap{width:min(1120px,calc(100% - 32px));margin:0 auto}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0}
.brand{font-weight:700;letter-spacing:.01em;font-size:1.06rem}
.nav-links{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.nav-links a{padding:10px 14px;border-radius:999px;color:var(--muted)}
.nav-links a:hover,.nav-links a.active{background:#fff;color:var(--text);box-shadow:0 4px 18px rgba(17,24,39,.06)}
.hero{padding:72px 0 34px}
.hero-card{
  background:linear-gradient(145deg,#ffffff 0%,#f9faff 100%);
  border:1px solid var(--line);
  border-radius:32px;
  box-shadow:var(--shadow);
  padding:48px;
}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.92rem;color:#4b5563;background:#fff;border:1px solid var(--line);padding:8px 14px;border-radius:999px}
.hero h1{font-size:clamp(2.2rem,4vw,4.2rem);line-height:1.06;margin:18px 0 16px;letter-spacing:-.03em}
.hero p{font-size:1.08rem;color:var(--muted);max-width:720px;margin:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;font-weight:600}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.section{padding:20px 0 10px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:10px 0 20px}
.section h2{font-size:1.8rem;letter-spacing:-.02em;margin:0}
.section p.lead{margin:0;color:var(--muted)}
.grid{display:grid;gap:18px}
.cards{grid-template-columns:repeat(3,minmax(0,1fr))}
.card,.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.card{padding:24px}
.card h3{margin:0 0 10px;font-size:1.15rem}
.card p{margin:0;color:var(--muted)}
.card .cta{display:inline-block;margin-top:16px;font-weight:600}
.info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.info-grid .panel{padding:26px}
.kv{display:grid;grid-template-columns:160px 1fr;gap:8px 16px;margin:0}
.kv dt{font-weight:700}
.kv dd{margin:0;color:var(--muted)}
.faq{display:grid;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 20px;box-shadow:var(--shadow)}
summary{cursor:pointer;font-weight:650;list-style:none}
summary::-webkit-details-marker{display:none}
.details-body{padding-top:10px;color:var(--muted)}
.content-page{padding:40px 0 80px}
.article{
  background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:34px;
}
.article h1{font-size:clamp(2rem,3vw,3rem);line-height:1.08;letter-spacing:-.03em;margin:0 0 8px}
.article .meta{color:var(--muted);margin-bottom:24px}
.article h2{margin-top:28px;font-size:1.25rem}
.article h3{margin-top:22px;font-size:1.05rem}
.article p,.article li{color:#374151}
.article ul{padding-left:20px}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;color:var(--muted)}
.footer{padding:30px 0 60px}
.footer-box{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:24px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow)}
.footer small,.footer a{color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;gap:14px}
.notice{padding:16px 18px;border-radius:18px;background:#f9fafb;border:1px solid var(--line);color:var(--muted)}
@media (max-width:900px){
  .cards,.info-grid{grid-template-columns:1fr}
  .hero-card{padding:28px}
  .kv{grid-template-columns:1fr}
}
@media (max-width:640px){
  .wrap{width:min(1120px,calc(100% - 20px))}
  .nav{padding:12px 0}
  .nav-links{gap:6px}
  .nav-links a{padding:8px 10px;font-size:.94rem}
  .hero{padding:28px 0 14px}
  .article{padding:22px}
}