:root{--bg:#0e1116;--panel:#161b22;--line:#2a313c;--ink:#e8eaed;--muted:#9aa4b2;--amber:#ffb547;--cyan:#6fd3ff;--green:#62dc8c;--pink:#ff8cbe}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans JP",system-ui,-apple-system,"Hiragino Sans","Yu Gothic UI",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
header.top{border-bottom:1px solid var(--line);background:linear-gradient(180deg,#141922,#0e1116)}
header.top .wrap{display:flex;align-items:center;gap:16px;padding-block:14px}
.logo{font-weight:800;letter-spacing:.04em}
.logo b{color:var(--cyan)}
.hero{padding-block:52px 24px}
.hero h1{font-size:clamp(26px,5vw,44px);margin:0 0 8px;line-height:1.3}
.hero h1 span{color:var(--cyan)}
.hero p{color:var(--muted);max-width:780px;margin:0}
.bits{margin-top:24px;font-family:Consolas,"Courier New",monospace;color:#2b3542;font-size:13px;white-space:nowrap;overflow:hidden}
nav.cats{position:sticky;top:0;background:var(--bg);z-index:5;border-bottom:1px solid var(--line)}
nav.cats .wrap{display:flex;flex-wrap:wrap;gap:8px;padding-block:14px}
nav.cats a{padding:6px 14px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:14px}
nav.cats a:hover{color:var(--ink);border-color:var(--cyan)}
section.cat{padding-block:34px 8px}
section.cat h2{margin:0;font-size:22px}
section.cat h2 small{color:var(--muted);font-weight:400;font-size:14px;margin-left:10px}
.path .step{margin-top:14px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px 16px}
.path .step h3{margin:0 0 6px;font-size:17px;color:var(--cyan)}
.path .step h3 small{color:var(--muted);font-weight:400;font-size:13px;margin-left:10px}
.path ol{margin:0;padding-left:0;display:flex;flex-wrap:wrap;gap:4px 24px;list-style-position:inside}
.path li{font-size:14px;color:var(--muted)}
.path li a{color:var(--ink)}
.path li a:hover{color:var(--cyan)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;margin-top:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;transition:transform .15s,border-color .15s}
a.card:hover{transform:translateY(-3px);border-color:var(--cyan)}
.thumb{aspect-ratio:16/9;background:#0a0d12;position:relative}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.thumb .dur{position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.75);font-size:12px;padding:1px 7px;border-radius:4px}
.thumb .soon{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);font-size:14px}
.card .body{padding:12px 14px 16px}
.card h3{margin:0 0 4px;font-size:17px}
.card p{margin:0;color:var(--muted);font-size:13.5px}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.tag{font-size:11.5px;padding:1px 8px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.tag.sc{border-color:#6b3a52;color:var(--pink)}
.tag.nw{border-color:#245366;color:var(--cyan)}
footer{border-top:1px solid var(--line);margin-top:56px;padding-block:28px;color:var(--muted);font-size:13px}
.watch{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px;padding-block:28px}
@media (max-width:900px){.watch{grid-template-columns:minmax(0,1fr)}}
.watch>*{min-width:0}
.lead{overflow-wrap:anywhere}
video{width:100%;aspect-ratio:16/9;background:#000;border-radius:10px;display:block}
.watch h1{font-size:clamp(22px,3.4vw,30px);margin:18px 0 4px}
.watch .lead{color:var(--muted);margin:0 0 6px}
.credit{color:var(--muted);font-size:12px;text-align:right;margin:4px 0 0}
.crumb{color:var(--muted);font-size:14px}
.crumb a:hover{color:var(--cyan)}
.chapters{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px;max-height:72vh;overflow:auto}
.chapters h2{font-size:15px;margin:6px 8px 8px;color:var(--muted);font-weight:500}
.ch{display:grid;grid-template-columns:44px 1fr;gap:8px;width:100%;text-align:left;background:none;border:0;color:inherit;font:inherit;padding:8px;border-radius:8px;cursor:pointer}
.ch:hover{background:#1d232c}
.ch.on{background:#13242b;outline:1px solid var(--cyan)}
.ch time{color:var(--cyan);font-variant-numeric:tabular-nums;font-size:13px;padding-top:2px}
.ch b{display:block;font-size:14px}
.ch span{display:block;color:var(--muted);font-size:12.5px;line-height:1.55}
.nav2{display:flex;justify-content:space-between;gap:12px;margin-top:22px;flex-wrap:wrap}
.nav2 a{border:1px solid var(--line);border-radius:8px;padding:8px 12px;color:var(--muted);font-size:14px;max-width:48%}
.nav2 a:hover{border-color:var(--cyan);color:var(--ink)}