/* feed.css: v3 feed design (homepage, lessons, news, about). Tokens only. */
:root,[data-theme=light]{--bg:#f7f3ec;--bg-blur:rgba(247,243,236,.92);--surface:#fffcf7;--border:#e4ddd1;--text:#2e2b27;--muted:#5c564e;--faint:#857e73;--accent:#3d6a99;--accent-soft:#e6edf4;--on-accent:#fdfbf7;color-scheme:light}
[data-theme=dark]{--bg:#16181c;--bg-blur:rgba(22,24,28,.92);--surface:#1f2228;--border:#2e323a;--text:#e6e6e6;--muted:#b0b4bb;--faint:#868b94;--accent:#7fa6cf;--accent-soft:#1f2a36;--on-accent:#16181c;color-scheme:dark}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;padding-bottom:90px;transition:background .2s,color .2s}
a{color:inherit}img{display:block;max-width:100%}
.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:6px;padding:0 16px;height:60px;background:var(--bg-blur);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.logo{display:flex;gap:8px;align-items:center;font-weight:850;letter-spacing:.06em;font-size:18px;text-decoration:none}
.top nav{display:flex;gap:2px;margin-left:12px}
.top nav a{padding:6px 10px;font-weight:600;font-size:15px;color:var(--muted);text-decoration:none;border-radius:8px;transition:background .15s,color .15s}
.top nav a:hover{color:var(--text);background:var(--accent-soft)}
.top nav a[aria-current]{color:var(--text);box-shadow:inset 0 -2px 0 var(--accent);border-radius:0}
.theme{margin-left:auto;background:none;border:1px solid var(--border);color:var(--text);border-radius:99px;width:36px;height:36px;font-size:16px;cursor:pointer}.theme:hover{background:var(--accent-soft)}
.btn{display:inline-block;background:var(--accent);color:var(--on-accent);font-weight:700;border:0;border-radius:99px;padding:9px 16px;font-size:14px;text-decoration:none;cursor:pointer;transition:filter .15s,transform .1s}.btn:hover{filter:brightness(1.08)}.btn:active{transform:scale(.97)}
main{max-width:1100px;margin:0 auto;padding:24px 16px}
.intro{margin:4px 0 22px}.intro h1{font-size:32px;line-height:1.1;letter-spacing:-.02em}.intro p{color:var(--muted);margin-top:6px}
.feed{display:grid;gap:16px;grid-template-columns:1fr}
.card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden;text-decoration:none;box-shadow:0 1px 2px rgba(0,0,0,.05);transition:transform .15s,box-shadow .15s}
a.card:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.08)}a.card:active{transform:scale(.99)}
.card h3{font-size:19px;font-weight:750;line-height:1.25;margin:8px 0 6px;letter-spacing:-.01em}
.card p{color:var(--muted);font-size:15px}
.lesson img{width:100%;aspect-ratio:16/9;object-fit:cover}.lesson>div,.note{padding:18px}
.tag{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--accent)}
.meta{display:block;color:var(--faint);font-size:13px;margin-top:12px}
.cap,.empty{padding:24px;box-shadow:inset 4px 0 0 var(--accent)}
.cap h2,.empty h2{font-size:22px;margin-bottom:6px}.cap .sub,.empty p{color:var(--muted);font-size:15px}.empty p+p{margin-top:10px}
.cap a,.empty a{color:var(--accent)}
.disc{font-size:13px;color:var(--faint);border-left:3px solid var(--accent);padding-left:8px;margin:12px 0 18px}
.sticky{position:fixed;right:16px;bottom:16px;z-index:6;display:flex;align-items:center;gap:10px;max-width:380px;padding:10px 10px 10px 16px;background:var(--surface);border:1px solid var(--border);border-radius:14px;font-size:14px;font-weight:600;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.sticky[hidden]{display:none}.sticky .sm{margin-left:auto;padding:7px 12px;font-size:13px}
.x{background:none;border:0;color:var(--faint);font-size:20px;cursor:pointer;padding:0 4px;line-height:1}.x:hover{color:var(--text)}
footer{max-width:1100px;margin:32px auto 0;padding:20px 16px;border-top:1px solid var(--border);color:var(--faint);font-size:13px}
footer p+p{margin-top:6px}.flinks a{color:var(--muted)}
.art{max-width:740px}.art h1{font-size:34px;line-height:1.1;letter-spacing:-.02em;margin:10px 0 8px}
.art h2{font-size:22px;margin:30px 0 8px;letter-spacing:-.01em}.art p,.art li{line-height:1.7;margin-bottom:12px}.art ul,.art ol{padding-left:22px;margin-bottom:12px}
.art a{color:var(--accent)}.art .card a,.art a.card{color:inherit}
.lede{font-size:18px;font-weight:600}
.soon{aspect-ratio:16/9;border-radius:16px;margin-bottom:16px;background:var(--accent-soft) url(../images/sheephero.webp) center/cover;display:grid;place-items:end start;padding:12px}
.soon span{background:rgba(0,0,0,.65);color:#fff;font-size:13px;font-weight:700;padding:4px 10px;border-radius:8px}
.core{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:6px 20px 8px;margin:20px 0}.core h2{margin-top:14px;font-size:18px}
.take{border-left:3px solid var(--accent);padding-left:12px;margin:24px 0}
table{width:100%;border-collapse:collapse;margin:8px 0 16px;font-size:15px}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:700}
.art table{display:block;overflow-x:auto}
.src{margin:20px 0;color:var(--muted);font-size:14px}.src summary{cursor:pointer;font-weight:700}
.next{font-weight:700;margin-top:24px}
.art .cap{margin:28px 0}.more{font-size:20px;margin-top:36px;padding-top:16px;border-top:1px solid var(--border)}
.art .feed{grid-template-columns:1fr 1fr}
@media(max-width:899px){.sticky{left:12px;right:12px;bottom:12px;max-width:none}.logo span{display:none}.top nav{margin-left:4px}.top nav a{padding:6px 8px;font-size:14px}.top .btn{padding:8px 12px;font-size:13px}.art .feed{grid-template-columns:1fr}}
@media(min-width:620px) and (max-width:899px){.feed{grid-template-columns:1fr 1fr}.cap{grid-column:1/-1}}
@media(min-width:900px){main:not(.art) .feed{grid-template-columns:repeat(3,1fr);gap:20px}.feed .cap{grid-column:1/-1}main{padding:32px 24px}}
.art .card h2{margin-top:0}

[data-theme=dark] .logo img{filter:brightness(0) invert(.92)}