:root{--ink:#101419;--panel:#171d24;--line:#2d3540;--paper:#f5f1e8;--gold:#d7a94f;--muted:#aeb6c1;--green:#54c98a}*{box-sizing:border-box}body{margin:0;background:var(--ink);color:#f7f7f3;font-family:Inter,Arial,sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}header{height:72px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 5vw;position:sticky;top:0;background:#101419ee;backdrop-filter:blur(12px);z-index:5}.brand{background:none;border:0;color:white;font-weight:900;letter-spacing:.1em}.brand span,.eyebrow,em{color:var(--gold)}nav{display:flex;gap:10px}nav button,.link{background:none;border:0;color:white;padding:10px 14px}.gold{border:0;background:var(--gold);color:#15120c;padding:12px 20px;font-weight:800;border-radius:4px}.large{padding:16px 24px}main{max-width:1320px;margin:auto;padding:4vw 5vw}.view{display:none}.view.active{display:block}.hero{min-height:65vh;display:grid;grid-template-columns:1.2fr .8fr;gap:7vw;align-items:center}.hero h1{font:700 clamp(48px,7vw,92px)/.98 Georgia,serif;margin:18px 0}.hero p{color:var(--muted);font-size:19px;line-height:1.7;max-width:680px}.hero aside{border:1px solid var(--line);background:var(--panel);padding:30px}.hero aside>b{display:block;color:var(--gold);font-size:12px;letter-spacing:.14em;margin-bottom:20px}.hero aside div{display:flex;gap:20px;border-top:1px solid var(--line);padding:18px 0;color:#6f7884}.hero aside span{color:white;font-weight:700}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}.card,.locked,.student{background:var(--panel);border:1px solid var(--line);padding:26px}.card small{color:var(--gold)}.progress{height:8px;background:#303844;border-radius:10px;overflow:hidden}.progress i{display:block;height:100%;background:var(--green)}.course-layout.active{display:grid;grid-template-columns:330px 1fr;gap:25px}.course-layout aside{border-right:1px solid var(--line);padding-right:20px}.module{margin:18px 0}.module h3{font-size:13px;color:var(--gold);text-transform:uppercase}.lesson-link{display:block;width:100%;text-align:left;background:none;border:0;color:var(--muted);padding:10px;border-left:2px solid var(--line)}.lesson-link.done{color:var(--green)}#lesson{max-width:780px}.media{aspect-ratio:16/9;background:#090b0e;border:1px solid var(--line);display:grid;place-items:center;color:#7d8794;margin:20px 0}.note{width:100%;min-height:180px;background:#0d1116;color:white;border:1px solid var(--line);padding:14px}.student{display:grid;grid-template-columns:1fr auto auto auto;gap:15px;align-items:center;margin:10px 0}dialog{width:min(500px,92vw);background:var(--panel);color:white;border:1px solid var(--line);padding:35px}dialog::backdrop{background:#000b}.x{float:right;background:none;border:0;color:white;font-size:25px}label{display:block;margin:14px 0;color:var(--muted)}input,select{display:block;width:100%;margin-top:6px;padding:12px;background:#0e1217;color:white;border:1px solid var(--line)}#toast{position:fixed;right:25px;bottom:25px;background:var(--gold);color:#111;padding:14px 20px;display:none}@media(max-width:800px){.hero{grid-template-columns:1fr}.course-layout.active{grid-template-columns:1fr}.course-layout aside{border-right:0}.student{grid-template-columns:1fr}.hero h1{font-size:50px}}