:root{color-scheme:dark}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:#0f1216;color:#e6e9ed}.page{max-width:1600px;margin:0 auto;padding:24px}.topbar{margin-bottom:24px}h1{margin:0 0 4px;font-size:1.6rem}.hint{margin:0 0 16px;color:#8b949e;font-size:.85rem}.add-form{display:flex;gap:8px;max-width:420px}.add-form input{flex:1;padding:10px 12px;border:1px solid #30363d;border-radius:6px;background:#161b22;color:#e6e9ed;font-size:1rem;text-transform:uppercase}.add-form input:focus{outline:none;border-color:#58a6ff}.add-form button{padding:10px 18px;border:none;border-radius:6px;background:#1f6feb;color:#fff;font-size:1rem;cursor:pointer}.add-form button:hover{background:#388bfd}.error{margin:10px 0 0;color:#f85149;font-size:.9rem}.presets{display:flex;align-items:center;gap:8px;margin-top:12px}.preset{padding:8px 14px;border:1px solid #30363d;border-radius:6px;background:#21262d;color:#c9d1d9;font-size:.9rem;cursor:pointer}.preset:hover{border-color:#58a6ff;color:#fff}.switch{position:relative;display:inline-flex;align-items:center;gap:8px;margin-left:24px;cursor:pointer;-webkit-user-select:none;user-select:none}.switch input{position:absolute;opacity:0;width:0;height:0}.slider{width:40px;height:22px;border-radius:22px;background:#30363d;position:relative;transition:background .2s}.slider:before{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform .2s}.switch input:checked+.slider{background:#1f6feb}.switch input:checked+.slider:before{transform:translate(18px)}.switch-label{font-size:.9rem;color:#c9d1d9}.grid{display:grid;grid-template-columns:1fr;gap:36px}.card{margin:0;max-width:50%;justify-self:center;background:#161b22;border:1px solid #30363d;border-radius:8px;overflow:hidden}.card img{display:block;width:100%;height:auto;background:#0d1117}.caption{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;font-weight:600}.remove{border:none;background:transparent;color:#8b949e;cursor:pointer;font-size:1rem;padding:2px 6px;border-radius:4px}.remove:hover{color:#f85149;background:#2d1b1b}