:root{--bg: #0b0f1a;--bg2: #0e1424;--card: rgba(255,255,255,.055);--card-brd: rgba(255,255,255,.12);--txt: #eef2ff;--muted: #9aa6c7;--accent1: #7c6cff;--accent2: #36d1c4;--accent3: #ff7ad9;--ok: #3ddc84;--radius: 18px;--surface: rgba(4,7,16,.55);--surface-brd: rgba(255,255,255,.1);--inline-code: rgba(255,255,255,.12);--code-bg: #070b15;--code-txt: #e6ebff;--topbar-bg: rgba(8,11,20,.55);--orb-op: .5;--body-bg: radial-gradient(1200px 800px at 15% -10%, #1a1140 0%, transparent 55%), radial-gradient(1000px 700px at 110% 10%, #06303a 0%, transparent 50%), linear-gradient(180deg, var(--bg), var(--bg2));--shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 18px 40px -18px rgba(0,0,0,.75), 0 6px 14px -8px rgba(0,0,0,.55);--shadow-hi: 0 1px 0 rgba(255,255,255,.1) inset, 0 34px 64px -22px rgba(0,0,0,.82), 0 12px 24px -10px rgba(0,0,0,.6)}html[data-theme=light]{--bg: #eef1fb;--bg2: #e4e9f7;--card: rgba(255,255,255,.74);--card-brd: rgba(22,30,60,.12);--txt: #141b35;--muted: #51608a;--accent1: #6a5cff;--accent2: #0f9f92;--accent3: #d4338b;--ok: #1f9d57;--surface: rgba(255,255,255,.94);--surface-brd: rgba(22,30,60,.1);--inline-code: rgba(22,30,60,.09);--code-bg: #0f1426;--code-txt: #e6ebff;--topbar-bg: rgba(255,255,255,.72);--orb-op: .26;--body-bg: radial-gradient(1200px 800px at 15% -10%, #d8d0ff 0%, transparent 55%), radial-gradient(1000px 700px at 110% 10%, #c2ecec 0%, transparent 50%), linear-gradient(180deg, var(--bg), var(--bg2));--shadow: 0 1px 0 rgba(255,255,255,.65) inset, 0 18px 40px -20px rgba(30,40,90,.35), 0 6px 14px -10px rgba(30,40,90,.25);--shadow-hi: 0 1px 0 rgba(255,255,255,.8) inset, 0 34px 64px -24px rgba(30,40,90,.4), 0 12px 24px -12px rgba(30,40,90,.3);color-scheme:light}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--body-bg);background-attachment:fixed;color:var(--txt);min-height:100vh;overflow-x:hidden}.orb{position:fixed;border-radius:50%;filter:blur(60px);opacity:var(--orb-op);z-index:0;pointer-events:none;animation:float 18s ease-in-out infinite}.orb.a{width:340px;height:340px;background:var(--accent1);top:-80px;left:-60px}.orb.b{width:300px;height:300px;background:var(--accent2);bottom:-100px;right:-40px;animation-delay:-6s}@keyframes float{0%,to{transform:translate(0) scale(1)}50%{transform:translate(30px,-24px) scale(1.08)}}.glass{background:var(--card);border:1px solid var(--card-brd);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);border-radius:var(--radius);box-shadow:var(--shadow)}.pill{display:inline-block;text-decoration:none;text-align:center;background:linear-gradient(120deg,var(--accent1),var(--accent2));color:#fff;border:none;border-radius:999px;padding:11px 22px;font-weight:700;cursor:pointer;font-size:15px;box-shadow:0 8px 24px #7c6cff59;transition:transform .12s ease}.pill:hover{transform:translateY(-1px)}.pill:disabled{opacity:.5;cursor:not-allowed}.ghost{display:inline-block;text-decoration:none;background:transparent;color:var(--txt);border:1px solid var(--card-brd);border-radius:999px;padding:9px 16px;font-weight:600;cursor:pointer;font-size:14px;box-shadow:0 6px 15px -7px #00000080;transition:transform .12s ease,box-shadow .12s ease}.ghost:hover{border-color:var(--accent2);transform:translateY(-1px);box-shadow:0 10px 22px -8px #0000008c}header.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:12px;padding:14px 22px;backdrop-filter:blur(12px);background:var(--topbar-bg);border-bottom:1px solid var(--card-brd)}.brand{font-weight:800;font-size:16px;display:flex;align-items:center;gap:9px}.brand .dot{width:11px;height:11px;border-radius:50%;background:linear-gradient(120deg,var(--accent1),var(--accent3));box-shadow:0 0 14px var(--accent1)}.topbar .spacer{flex:1}#themebtn{background:transparent;border:1px solid var(--card-brd);border-radius:999px;padding:8px 12px;font-size:16px;cursor:pointer;color:var(--txt);box-shadow:0 6px 15px -7px #00000080}main.stage{position:relative;z-index:1;max-width:820px;margin:26px auto;padding:30px;box-shadow:var(--shadow-hi)}.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent3);font-weight:700}.level-chip{display:inline-block;font-size:11px;padding:3px 10px;border-radius:999px;border:1px solid var(--card-brd);color:var(--muted);margin-left:8px;text-transform:capitalize}h1.daytitle{font-size:27px;margin:8px 0 6px;line-height:1.15}.objective{color:var(--muted);margin:0 0 16px;font-size:15px}figure.hero{position:relative;margin:0 0 16px;border-radius:16px;overflow:hidden;box-shadow:var(--img-shadow, 0 26px 52px -22px rgba(0,0,0,.85));border:1px solid var(--card-brd)}figure.hero img{display:block;width:100%;height:clamp(180px,30vw,300px);object-fit:cover}figure.hero figcaption{position:absolute;bottom:8px;right:12px;font-size:11px;color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.8)}.videowrap{position:relative;width:100%;aspect-ratio:16 / 9;margin:0 0 18px;border-radius:16px;overflow:hidden;background:#000;box-shadow:var(--img-shadow, 0 10px 30px rgba(0,0,0,.28));border:1px solid var(--card-brd)}.videowrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.audiowrap{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin:0 0 18px;padding:10px 14px;border-radius:14px;background:#7c6cff14;border:1px solid var(--card-brd)}.audiowrap .audiolabel{font-weight:700;font-size:14px;white-space:nowrap}.audiowrap audio{flex:1 1 240px;min-width:200px;height:36px}.prose{background:var(--surface);border:1px solid var(--surface-brd);border-radius:14px;padding:18px 20px;line-height:1.62;font-size:15.5px}.prose p{margin:0 0 14px}.prose h3{margin:22px 0 8px;font-size:17px}.prose ul{margin:0 0 14px;padding-left:22px}.prose li{margin:5px 0}.prose code{background:var(--inline-code);padding:2px 6px;border-radius:6px;font-size:.92em}.prose pre{background:var(--code-bg);color:var(--code-txt);border-radius:12px;padding:14px 16px;overflow-x:auto;font-size:13.5px;line-height:1.5}.prose pre code{background:transparent;padding:0}ul.tasks{list-style:none;padding:0;margin:0 0 14px}ul.tasks li{padding:12px 14px;border:1px solid var(--surface-brd);border-radius:12px;margin-bottom:10px;background:#7c6cff0d}.nextrow{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px;align-items:center}.gate{position:fixed;inset:0;z-index:50;display:none;align-items:center;justify-content:center;padding:20px;background:#050810a8;backdrop-filter:blur(10px)}.gate.show{display:flex}.gatecard{max-width:460px;width:100%;padding:34px;text-align:center}.gatecard h2{margin:6px 0 8px;font-size:24px}.gatecard p{color:var(--muted);margin:0 0 20px}.gatecard input{width:100%;padding:13px 15px;border-radius:12px;border:1px solid var(--card-brd);background:#0000004d;color:var(--txt);font-size:15px;margin:7px 0}.hidden{display:none!important}.spin{display:inline-block;width:15px;height:15px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite;vertical-align:-2px}@keyframes sp{to{transform:rotate(360deg)}}@media(max-width:640px){main.stage{margin:14px;padding:20px}}