:root{--bg: #0e1116;--surface: #171b22;--border: #2a2f3a;--text: #e6e9ef;--muted: #98a0ad;--accent: #4f8cff;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Hiragino Kaku Gothic ProN,Meiryo,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:1rem;padding:.9rem 1.25rem;background:#0e1116d9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.brand{font-weight:700;font-size:1.1rem;color:var(--text)}.brand:hover{text-decoration:none}main{max-width:1100px;margin:0 auto;padding:1.5rem 1.25rem 3rem}footer{border-top:1px solid var(--border);padding:1.25rem;text-align:center;color:var(--muted);font-size:.85rem}code{background:var(--surface);border:1px solid var(--border);border-radius:4px;padding:.1em .4em;font-size:.9em}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.25rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden;transition:border-color .15s,transform .15s}.card:hover{border-color:var(--accent);transform:translateY(-2px);text-decoration:none}.card .thumb{aspect-ratio:16 / 9;width:100%;object-fit:cover;background:#000 repeating-linear-gradient(45deg,#1c2128,#1c2128 10px,#20262e 10px,#20262e 20px);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:2.5rem}.card .body{padding:.85rem 1rem 1rem}.card .title{font-weight:600;color:var(--text);margin:0 0 .3rem}.card .meta{color:var(--muted);font-size:.8rem}.empty{border:1px dashed var(--border);border-radius:12px;padding:2.5rem 1.5rem;text-align:center;color:var(--muted)}.player video{width:100%;border-radius:12px;background:#000;aspect-ratio:16 / 9}.player h1{margin:1.1rem 0 .3rem;font-size:1.4rem}.player .meta{color:var(--muted);font-size:.85rem}.player .desc{margin-top:1rem;line-height:1.6;color:var(--text)}.back{display:inline-block;margin-bottom:1rem;font-size:.9rem}