:root{--bg:#0b0d14;--panel:#151927;--line:rgba(255,255,255,.09);--text:#e8eaf2;--muted:#98a0b5;--accent:#e50914;--ok:#3ddc84;--radius:16px}
*{box-sizing:border-box}
body{margin:0;font-family:'Cairo',system-ui,-apple-system,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);line-height:1.8}
a{color:inherit}
img{max-width:100%}
.hdr{display:flex;gap:1rem;align-items:center;justify-content:space-between;padding:.7rem 1.2rem;background:rgba(11,13,20,.92);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(10px);flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.5rem;text-decoration:none;font-weight:900;font-size:1.05rem}
.brand img{border-radius:8px}
.hdr nav{display:flex;gap:.9rem;flex-wrap:wrap;font-size:.92rem}
.hdr nav a{color:var(--muted);text-decoration:none;padding:.15rem 0}
.hdr nav a:hover{color:#fff}
.wrap{max-width:980px;margin:0 auto;padding:1.2rem 1.2rem 2rem}
h1{font-size:clamp(1.25rem,2.6vw,1.7rem);line-height:1.45;margin:.5rem 0}
h2{font-size:1.1rem;margin:.3rem 0 .7rem}
h2 a{text-decoration:none}
.crumbs{font-size:.82rem;color:var(--muted);margin:.3rem 0 .5rem}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:#fff}
.meta{color:var(--muted);font-size:.9rem;margin:.2rem 0 1rem}
.muted{color:var(--muted)}
.player{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:var(--radius);overflow:hidden;margin:0 0 1.1rem;border:1px solid var(--line)}
.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
section.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.2rem;margin-bottom:1rem}
ul,ol{padding-inline-start:1.3rem;margin:.4rem 0}
li{margin:.25rem 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.9rem}
.vcard{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;text-decoration:none;display:flex;flex-direction:column;transition:transform .15s,border-color .15s}
.vcard:hover{transform:translateY(-2px);border-color:rgba(229,9,20,.5)}
.vcard img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;background:#000}
.vcard span{padding:.55rem .7rem .1rem;font-size:.9rem;font-weight:700;line-height:1.5}
.vcard small{padding:0 .7rem .65rem;color:var(--muted);font-size:.76rem}
.pcard{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:1rem;text-decoration:none;display:flex;flex-direction:column;gap:.3rem;transition:transform .15s,border-color .15s}
.pcard:hover{transform:translateY(-2px);border-color:rgba(229,9,20,.5)}
.picon{font-size:1.7rem}
.pcard b{font-size:1rem}
.pcard small{color:var(--muted);font-size:.82rem;line-height:1.6}
.pcard i{color:var(--accent);font-style:normal;font-size:.78rem;margin-top:.2rem}
.lessons{display:flex;flex-direction:column}
.lesson{display:flex;gap:.8rem;padding:.6rem 0;border-bottom:1px solid var(--line);text-decoration:none;align-items:flex-start}
.lesson:last-child{border-bottom:0}
.lesson b{color:var(--accent);min-width:1.4rem;text-align:center}
.lesson small{color:var(--muted)}
.quiz details{border-top:1px solid var(--line);padding:.6rem 0}
.quiz details:first-of-type{border-top:0}
.quiz summary{cursor:pointer;font-weight:700}
.quiz ol{margin-top:.4rem}
.ok{color:var(--ok);font-size:.8rem}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:.55rem 1.1rem;border-radius:10px;text-decoration:none;font-weight:700;margin:.2rem 0}
.btn:hover{filter:brightness(1.1)}
footer{border-top:1px solid var(--line);margin-top:2rem;padding:1.4rem 1.2rem 2rem;color:var(--muted);font-size:.84rem;text-align:center;line-height:1.9}
footer a{color:var(--text);text-decoration:none}
footer a:hover{color:var(--accent)}
@media(max-width:560px){.hdr{padding:.6rem .8rem}.hdr nav{gap:.7rem;font-size:.85rem}.wrap{padding:.9rem .8rem 1.6rem}}