:root{--primary:#2563eb;--dark:#0f172a;--muted:#64748b;--bg:#f8fafc;--card:#fff;--line:#e2e8f0;--accent:#eff6ff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:#172033;line-height:1.7}
a{color:inherit;text-decoration:none}.container{width:min(1120px,92%);margin:auto}
.topbar{background:#0f172a;color:#cbd5e1;font-size:13px;padding:7px 0}.topbar .container{display:flex;justify-content:space-between;gap:16px}
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px}.brand img{width:46px;height:46px;object-fit:contain;border-radius:10px}.brand span{letter-spacing:-.5px}
nav{display:flex;align-items:center;gap:20px;flex-wrap:wrap}nav a{font-size:14px;font-weight:650;color:#475569}nav a:hover,nav a.active{color:var(--primary)}
.menu{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 10px;font-size:18px}
.hero{padding:72px 0 52px;background:linear-gradient(135deg,#eff6ff 0%,#fff 55%,#f8fafc 100%);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}.eyebrow{display:inline-block;background:#dbeafe;color:#1d4ed8;padding:5px 11px;border-radius:999px;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
h1{font-size:clamp(38px,6vw,62px);line-height:1.05;letter-spacing:-2.2px;margin:16px 0}.hero p{font-size:18px;color:#475569;max-width:680px}
.btn{display:inline-block;background:var(--primary);color:#fff;padding:11px 17px;border-radius:9px;font-weight:750;margin:7px 7px 0 0}.btn.secondary{background:#fff;color:#1e40af;border:1px solid #bfdbfe}
.hero-card,.card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 10px 30px rgba(15,23,42,.06)}.hero-card{padding:26px}.hero-card h3{margin-top:0}.hero-card ul{padding-left:19px;margin-bottom:0}
section{padding:58px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.section-head h2{margin:0;font-size:30px;letter-spacing:-.7px}.section-head p{margin:5px 0 0;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{padding:23px}.card h3{margin:7px 0 8px;font-size:19px}.card p{margin:0;color:#64748b}.tag{display:inline-block;font-size:12px;font-weight:750;color:#1d4ed8;background:var(--accent);padding:4px 8px;border-radius:6px}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:22px}.feature .card{padding:28px}.list{padding-left:20px}.muted{color:var(--muted)}
.article{max-width:820px;margin:0 auto}.article h1{font-size:44px}.article h2{margin-top:34px}.article .meta{color:var(--muted);font-size:14px}.article p,.article li{font-size:16px}
.ad-slot{border:1px dashed #cbd5e1;color:#94a3b8;text-align:center;padding:16px;margin:25px 0;border-radius:10px;font-size:12px}
.page-hero{padding:52px 0 28px;background:#fff;border-bottom:1px solid var(--line)}.page-hero h1{font-size:42px;margin:8px 0}.page-hero p{color:var(--muted);max-width:760px}
.form{display:grid;gap:14px}.form input,.form textarea{width:100%;padding:12px 13px;border:1px solid #cbd5e1;border-radius:8px;font:inherit;background:#fff}.form textarea{min-height:150px}
footer{background:#0f172a;color:#cbd5e1;padding:45px 0 22px;margin-top:20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}.footer-title{font-weight:800;color:#fff;margin-bottom:10px}.footer-grid a{display:block;font-size:14px;margin:7px 0;color:#cbd5e1}.copyright{border-top:1px solid #334155;margin-top:30px;padding-top:18px;font-size:13px;color:#94a3b8}
.search{display:flex;gap:8px;margin-top:18px}.search input{flex:1;padding:13px;border:1px solid #cbd5e1;border-radius:9px;font:inherit}.search button{border:0;cursor:pointer}
.notice{padding:14px 16px;border-left:4px solid var(--primary);background:#eff6ff;border-radius:7px;margin:20px 0}
@media(max-width:820px){.hero-grid,.feature,.footer-grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr 1fr}nav{display:none}.menu{display:block}.nav.open nav{display:flex;position:absolute;left:0;right:0;top:74px;background:#fff;padding:18px 4%;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start}.section-head{display:block}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.topbar .container{display:block;text-align:center}.hero{padding-top:50px}.article h1,.page-hero h1{font-size:34px}}