:root{--cream:#F6F3EC;--ink:#1B1B1F;--soft:#585863;--amber:#E8622C;--line:rgba(27,27,31,.12)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--cream);color:var(--ink);line-height:1.6}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
.nav{position:sticky;top:0;background:rgba(246,243,236,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;font-size:22px}.brand span{color:var(--amber)}
.nav nav{display:flex;gap:22px}.nav nav a{color:var(--soft);font-weight:600;font-size:15px}
.nav nav a:hover{color:var(--ink)}
h1{font-size:clamp(30px,5vw,52px);margin:0 0 12px;letter-spacing:-.02em}
h2{font-size:26px;margin:0 0 10px}
.hero{padding:70px 0}.hero p{font-size:19px;color:var(--soft);max-width:560px}
.btn{display:inline-block;margin-top:22px;background:var(--amber);color:#fff;font-weight:700;padding:12px 24px;border-radius:100px}
section{padding:40px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:transform .15s}
.card:hover{transform:translateY(-4px)}
.card img{width:100%;display:block;aspect-ratio:16/10;object-fit:cover}
.card .b{padding:14px 16px}.card .b small{color:var(--amber);font-weight:700;font-size:12px}
.card .b h3{font-size:16px;margin:4px 0 0}
.lesson-hero{padding:50px 0}.lesson-hero img{width:100%;max-width:520px;border-radius:18px;margin-top:20px}
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--soft);font-size:14px;margin-top:40px}