:root{--bg: #f6f7f9;--panel: #ffffff;--text: #1c1f24;--muted: #6b7280;--border: #e2e5ea;--accent: #2563eb;--error: #b91c1c;font-family:system-ui,-apple-system,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.login{text-align:center;padding-top:4rem}.app main{max-width:64rem;margin:1.5rem auto;padding:0 1rem}.topbar{display:flex;align-items:center;gap:1rem;padding:.6rem 1rem;background:var(--panel);border-bottom:1px solid var(--border)}.topbar .brand{font-weight:700}.topbar nav{display:flex;gap:.75rem}.topbar nav a{color:var(--muted);text-decoration:none;padding:.25rem .5rem;border-radius:4px}.topbar nav a.active{color:var(--accent);background:#eef2ff}.spacer{flex:1}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:1rem 1.25rem}.muted{color:var(--muted)}.error{color:var(--error)}table{width:100%;border-collapse:collapse;margin-top:.75rem}th,td{text-align:left;padding:.5rem .6rem;border-bottom:1px solid var(--border);vertical-align:middle}th{color:var(--muted);font-weight:600;font-size:.85rem}button{padding:.35rem .8rem;border:1px solid var(--border);border-radius:6px;background:var(--panel);cursor:pointer}button:not(:disabled):hover{border-color:var(--accent);color:var(--accent)}button:disabled{opacity:.5;cursor:default}input[type=text],input:not([type]),input[placeholder]{padding:.35rem .6rem;border:1px solid var(--border);border-radius:6px}.toolbar{display:flex;align-items:center;gap:.6rem;margin-top:.75rem}.brand-checks{display:flex;flex-wrap:wrap;gap:.35rem .9rem}.brand-checks label,.switch{display:inline-flex;align-items:center;gap:.3rem;white-space:nowrap}.thumb{width:56px;height:40px;object-fit:cover;border-radius:4px;border:1px solid var(--border);display:inline-block}.thumb-empty{background:var(--bg)}