:root { --bg:#0b0b0c; --fg:#e7e7ea; --muted:#a1a1aa; --card:#141418; --accent:#7c9cff; --danger:#ff6b6b; --line:#23232a; }
    html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;}
    a{color:var(--accent);text-decoration:none}
    a:hover{text-decoration:underline}
    .wrap{max-width:980px;margin:24px auto;padding:0 16px}
    .breadcrumb{font-size:14px;color:var(--muted);margin:8px 0 16px}
    .grid{display:grid;grid-template-columns:220px 1fr;gap:20px}
    .card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}
    .thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;border:1px solid var(--line);background:#111}
    h1{font-size:22px;margin:0 0 6px}
    .desc{white-space:pre-wrap;color:#d1d1d6}
    .muted{color:var(--muted)}
    .section-title{font-weight:700;margin:16px 0 8px}
    /* tags */
    .tag-editor{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
    .tag{display:inline-flex;align-items:center;gap:6px;background:#1c1c22;border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-size:14px}
    .tag .x{cursor:pointer;opacity:.8}
    .tag .x:hover{opacity:1;color:var(--danger)}
    .tag-input{flex:1;min-width:140px;border:1px dashed var(--line);background:transparent;color:var(--fg);border-radius:999px;padding:6px 10px}
    .tag-hint{font-size:12px;color:var(--muted)}
    /* form */
    .field{display:flex;flex-direction:column;gap:6px;margin:12px 0}
    .input,.textarea{background:#111218;border:1px solid var(--line);color:var(--fg);border-radius:10px;padding:10px 12px}
    .textarea{min-height:160px;resize:vertical}
    .row{display:flex;gap:12px;align-items:center;justify-content:space-between}
    .counter{font-size:12px;color:var(--muted)}
    .actions{display:flex;gap:10px;justify-content:flex-end;margin-top:12px}
    .btn{border:1px solid var(--line);background:#1b1b21;color:var(--fg);padding:10px 14px;border-radius:10px;cursor:pointer}
    .btn.primary{background:var(--accent);color:#0b0b0c;border-color:#6a83ff;font-weight:700}
    .btn:disabled{opacity:.5;cursor:not-allowed}
    @media (max-width:720px){ .grid{grid-template-columns:1fr} }