:root{
  --bg:#f7f9fc; --card:#fff; --text:#172033; --muted:#667085;
  --primary:#4f46e5; --primary-dark:#3730a3; --border:#e6eaf0;
  --max:1100px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);line-height:1.7}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(var(--max),92%);margin:auto}
header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.nav{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{font-weight:800;font-size:1.2rem;color:var(--text)}
.logo span{color:var(--primary)}
nav{display:flex;gap:20px;flex-wrap:wrap;justify-content:flex-end}
nav a{color:#344054;font-size:.94rem;font-weight:600}
.hero{padding:76px 0 60px;background:linear-gradient(135deg,#eef2ff,#fff)}
.hero h1{font-size:clamp(2.1rem,5vw,3.8rem);line-height:1.1;margin:0 0 20px;max-width:800px}
.hero p{font-size:1.12rem;color:var(--muted);max-width:760px}
.btn{display:inline-block;margin-top:12px;padding:12px 18px;background:var(--primary);color:#fff;border-radius:9px;font-weight:700}
.btn:hover{background:var(--primary-dark);text-decoration:none}
.btn-secondary{background:#fff;color:var(--primary);border:1px solid #c7d2fe;margin-left:8px}
.btn-secondary:hover{background:#eef2ff;color:var(--primary-dark)}
.welcome-strip{padding:28px 0;background:#eef2ff}
.welcome-strip .container{display:flex;align-items:center;justify-content:space-between;gap:24px}
.welcome-strip h2{margin:0 0 8px;font-size:1.6rem}
.welcome-strip p{margin:0;color:var(--muted);max-width:700px}
.section{padding:55px 0}
.section h2{font-size:2rem;margin-top:0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px;box-shadow:0 4px 18px rgba(16,24,40,.04)}
.card h3{margin-top:0;line-height:1.3}
.card p{color:var(--muted)}
.tag{display:inline-block;font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--primary);margin-bottom:10px}
.article{max-width:800px;margin:55px auto;background:#fff;border:1px solid var(--border);border-radius:16px;padding:clamp(25px,5vw,55px)}
.article h1{font-size:clamp(2rem,5vw,3.1rem);line-height:1.15}
.article h2{margin-top:38px;line-height:1.3}
.article li{margin:7px 0}
.notice{background:#f8fafc;border-left:4px solid var(--primary);padding:16px 18px;margin:28px 0}
.meta{color:var(--muted);font-size:.9rem}
footer{background:#111827;color:#d1d5db;padding:45px 0;margin-top:30px}
footer a{color:#d1d5db}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
footer h3{color:#fff;margin-top:0}
form{display:grid;gap:15px}
label{font-weight:700}
input,textarea{width:100%;padding:12px;border:1px solid #d0d5dd;border-radius:8px;font:inherit}
textarea{min-height:150px}
.small{font-size:.9rem;color:var(--muted)}
@media(max-width:800px){
  .grid{grid-template-columns:1fr}
  .welcome-strip .container{align-items:flex-start;flex-direction:column}
  .btn-secondary{margin-left:0}
  .footer-grid{grid-template-columns:1fr}
  .nav{align-items:flex-start;padding:15px 0;flex-direction:column}
  nav{justify-content:flex-start}
}