:root{--brand:#10b981;--brand2:#064e3b;--soft:#ecfdf5;--accent:#3b82f6;--text:#172033;--muted:#64748b;--line:#e2e8f0;--card:#fff;--radius:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--text);background:#ecfdf5;line-height:1.72}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{width:min(1160px,calc(100% - 32px));margin:auto}
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);border-radius:0}
.nav{height:76px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--brand)}.brand img{width:46px;height:46px;object-fit:cover}
.navlinks{display:flex;gap:18px;margin-left:auto;font-size:15px}.navlinks a{padding:8px 10px;border-radius:10px}.navlinks a:hover{background:var(--soft);color:var(--brand)}.menu{display:none;margin-left:auto;border:0;background:var(--soft);padding:10px 12px;border-radius:10px}
.hero{padding:58px 0 28px}.hero-grid{display:flex;flex-direction:row;align-items:center;gap:44px;background:#fff;border:1px solid var(--line);border-radius:32px;padding:38px;box-shadow:0 18px 50px rgba(15,23,42,.07)}.hero-copy{flex:1}.hero-visual{flex:1}.hero-visual img{border-radius:24px}.eyebrow{color:var(--brand);font-weight:700;letter-spacing:.04em}h1{font-size:clamp(34px,5vw,58px);line-height:1.12;margin:10px 0 16px}h2{font-size:30px;line-height:1.25;margin:0 0 10px}h3{line-height:1.35}.lead{font-size:18px;color:var(--muted)}.searchbox{display:flex;gap:8px;margin-top:24px}.searchbox input{flex:1;padding:15px 16px;border:1px solid var(--line);border-radius:14px;font-size:16px}.btn{border:0;background:var(--brand);color:white;padding:14px 20px;border-radius:14px;font-weight:700;cursor:pointer}.btn.secondary{background:var(--accent);color:#fff}
section{padding:34px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}.section-head p{color:var(--muted);margin:0}.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;box-shadow:0 8px 26px rgba(15,23,42,.045)}.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(15,23,42,.09)}.card img{aspect-ratio:16/10;object-fit:cover;width:100%}.card-body{padding:18px}.meta{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--muted)}.pill{display:inline-flex;padding:5px 10px;border-radius:999px;background:var(--soft);color:var(--brand);font-size:12px;font-weight:700}.card h3{font-size:19px;margin:10px 0 8px}.card p{color:var(--muted);margin:0;font-size:14px}
.topic-list{display:flex;flex-wrap:wrap;gap:10px}.topic-list a{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line)}.feature{background:linear-gradient(135deg,var(--brand),var(--brand2));color:white;border-radius:26px;padding:30px}.feature p{opacity:.86}.faq details{background:white;border:1px solid var(--line);border-radius:14px;margin:10px 0;padding:14px 16px}.faq summary{cursor:pointer;font-weight:700}
.breadcrumb{font-size:14px;color:var(--muted);padding:20px 0}.article{background:#fff;border:1px solid var(--line);border-radius:24px;padding:clamp(22px,5vw,54px);max-width:900px;margin:auto}.article h1{font-size:clamp(30px,4vw,46px)}.article h2{font-size:26px;margin-top:34px}.article p{font-size:17px;color:#334155}.article .cover{border-radius:20px;margin:24px 0}.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:40px}.article-nav a{background:var(--soft);padding:16px;border-radius:14px}.article-nav a:last-child{text-align:right}
.listing{display:grid;grid-template-columns:2fr 1fr;gap:24px}.sidebar{align-self:start;position:sticky;top:96px}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;margin-bottom:16px}.result{padding:18px 0;border-bottom:1px solid var(--line)}.result:last-child{border:0}.empty{padding:40px;background:white;border-radius:18px;border:1px dashed var(--line);text-align:center;color:var(--muted)}
footer{margin-top:40px;background:#0f172a;color:#cbd5e1;padding:48px 0 24px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:26px}footer a{color:#e2e8f0}.copyright{border-top:1px solid #334155;margin-top:28px;padding-top:18px;font-size:13px;color:#94a3b8}
@media(max-width:860px){.navlinks{display:none;position:absolute;top:72px;left:16px;right:16px;background:#fff;border:1px solid var(--line);padding:14px;border-radius:16px;flex-direction:column}.navlinks.open{display:flex}.menu{display:block}.hero-grid{flex-direction:column;padding:24px}.grid-3,.grid-4{grid-template-columns:1fr 1fr}.listing{grid-template-columns:1fr}.sidebar{position:static}}
@media(max-width:580px){.wrap{width:min(100% - 22px,1160px)}.grid-3,.grid-4,.grid-2{grid-template-columns:1fr}.searchbox{flex-direction:column}.hero{padding-top:24px}section{padding:26px 0}.footer-grid{grid-template-columns:1fr}.article-nav{grid-template-columns:1fr}}