:root{--bg:#f8f8f8;--surface:#fff;--text:#0f172a;--muted:#475569;--brand:#0f766e;--brand-soft:#34d399;--accent:#0d9488;--border:#d4d4d8;--font-display:"Fraunces",serif}
.panel,.item,.flat-toolbar button{box-shadow:none;border-radius:6px}
.flat-toolbar{display:flex;gap:8px;align-items:center;margin-bottom:12px}
.flat-toolbar button{padding:8px 10px;border:1px solid var(--border);background:#fff;font-weight:600}
.flat-list{display:grid;gap:8px}
.item{padding:14px;border:1px solid var(--border)}
.item h2{font-family:"IBM Plex Sans JP",sans-serif;font-size:1rem;text-transform:uppercase;letter-spacing:.03em}