:root{--ink:#0f172a;--muted:#475569;--brand:#0ea5e9;--brand2:#22c55e;--line:#e2e8f0;--card:#f8fafc}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:#fff}
header{padding:24px 16px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff}
header .wrap{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}
h1{margin:0;font-size:28px}
nav a{color:#fff;text-decoration:none;margin-left:14px;font-weight:700}
nav a:hover{text-decoration:underline}
.hero{max-width:1100px;margin:28px auto;border-radius:16px;overflow:hidden;box-shadow:0 10px 30px rgba(2,6,23,.15)}
.hero img{width:100%;display:block}
.main{max-width:1100px;margin:0 auto;padding:0 16px 40px}
.grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:900px){.grid{grid-template-columns:2fr 1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 4px 14px rgba(2,6,23,.06)}
h2{margin:0 0 8px;font-size:24px}
.kicker{display:inline-block;background:#e0f2fe;color:#0c4a6e;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.3px;margin-bottom:10px}
.lead{color:var(--muted);line-height:1.6}
.article img{width:100%;border-radius:12px;margin:12px 0}
ul{padding-left:18px}
.courses .item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;margin:12px 0}
.price{color:#16a34a;font-weight:800}
small.muted{color:var(--muted)}
form label{display:block;margin:10px 0 6px}
input,textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit}
.checkbox{display:flex;gap:10px;align-items:flex-start;margin-top:10px}
button{background:var(--brand);color:#fff;border:none;border-radius:999px;padding:12px 18px;font-weight:800;cursor:pointer}
button:hover{filter:brightness(.95)}
footer{border-top:1px solid var(--line);padding:20px 16px;background:#f1f5f9}
footer .wrap{max-width:1100px;margin:0 auto;display:flex;flex-direction:column;gap:6px}
.modal{position:fixed;inset:0;background:rgba(2,6,23,.6);display:none;align-items:center;justify-content:center;padding:20px}
.modal .box{background:#fff;border-radius:14px;max-width:420px;width:100%;padding:22px;box-shadow:0 18px 60px rgba(2,6,23,.3);text-align:center}
.close{margin-top:14px;background:var(--brand2)}