:root{
  --bg:#ffffff; --ink:#101828; --muted:#475467; --brand:#0e7c5b; --brand-d:#0a5f46;
  --soft:#eef7f2; --line:#e4e7ec; --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{font-weight:800;font-size:1.25rem;color:var(--brand);text-decoration:none}
.langs a{margin-left:10px;font-size:.85rem;color:var(--muted);text-decoration:none}
.langs a[aria-current]{color:var(--ink);font-weight:700}
.hero{padding:56px 0 40px;text-align:center}
.hero h1{font-size:2.1rem;line-height:1.25;margin:0 0 14px}
.hero p{color:var(--muted);font-size:1.08rem;max-width:640px;margin:0 auto 26px}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 26px;border-radius:999px;text-decoration:none;font-weight:700}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-d)}
.btn.ghost{border:1px solid var(--line);color:var(--ink)}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin:40px 0}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff}
.card h3{margin:0 0 8px;font-size:1.05rem}
.card p{margin:0;color:var(--muted);font-size:.95rem}
.guides-preview{margin:48px 0}
.guides-preview h2{font-size:1.5rem;margin-bottom:6px}
.guide-list{list-style:none;padding:0;margin:18px 0}
.guide-list li{margin:0 0 14px;border-bottom:1px dashed var(--line);padding-bottom:14px}
.guide-list a{font-weight:700;color:var(--ink);text-decoration:none;font-size:1.05rem}
.guide-list a:hover{color:var(--brand)}
.guide-list p{margin:4px 0 0;color:var(--muted);font-size:.92rem}
footer.site{border-top:1px solid var(--line);margin-top:56px;padding:26px 0;color:var(--muted);font-size:.9rem}
article.guide h1{font-size:1.9rem;line-height:1.3;margin:26px 0 8px}
article.guide .meta{color:var(--muted);font-size:.88rem;margin-bottom:22px}
article.guide h2{font-size:1.35rem;margin:34px 0 10px}
article.guide h3{font-size:1.1rem;margin:24px 0 8px}
.cta-box{background:var(--soft);border:1px solid #cfe7d9;border-radius:var(--radius);padding:26px;margin:36px 0;text-align:center}
.cta-box h2{margin:0 0 8px;font-size:1.3rem}
.cta-box p{color:var(--muted);margin:0 0 18px}
.faq{margin-top:36px}
.faq h2{font-size:1.35rem}
.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer}
.breadcrumb{font-size:.85rem;color:var(--muted);margin:18px 0 0}
.breadcrumb a{color:var(--muted)}
@media(max-width:640px){.hero h1{font-size:1.6rem}}

.qr-block{display:flex;gap:22px;align-items:center;justify-content:center;background:var(--soft);border:1px solid #cfe7d9;border-radius:var(--radius);padding:26px;margin:36px auto;max-width:680px;text-align:left}
.qr-block img{width:132px;height:132px;flex:none;border-radius:12px;background:#fff;padding:6px;border:1px solid var(--line)}
.qr-block h2{margin:0 0 6px;font-size:1.2rem}
.qr-block p{margin:0 0 14px;color:var(--muted);font-size:.95rem}
.card .more{display:inline-block;margin-top:10px;font-size:.9rem;font-weight:700;color:var(--brand);text-decoration:none}
.hub-desc{color:var(--muted);font-size:1.02rem;max-width:660px}
@media(max-width:640px){.qr-block{flex-direction:column;text-align:center}}

.qr-hint{display:flex;align-items:center;justify-content:center;gap:12px;margin:20px 0 4px;color:var(--muted);font-size:.9rem}
.qr-hint img{width:96px;height:96px;flex:none;border-radius:10px;background:#fff;padding:5px;border:1px solid var(--line)}