:root { --fg: #1d1d1f; --muted: #6e6e73; --line: #d2d2d7; --bg: #fff; --warn: #b00020; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; color: var(--fg); background: var(--bg); }
.top { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.top nav { display: flex; gap: 16px; align-items: center; }
.top form { margin: 0; }
.brand { font-weight: 600; text-decoration: none; color: inherit; }
.banner { background: var(--warn); color: #fff; padding: 8px 16px; }
main { max-width: 900px; margin: 0 auto; padding: 16px; }
.tiles { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.tile { display: block; padding: 24px 16px; border: 1px solid var(--line); border-radius: 8px; text-decoration: none; color: inherit; }
.form div { margin-bottom: 12px; }
.form label { display: block; font-weight: 500; }
.form input, .form textarea { width: 100%; max-width: 480px; padding: 6px; font: inherit; }
.errorlist { color: var(--warn); margin: 4px 0; padding-left: 16px; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }
button { font: inherit; padding: 6px 12px; cursor: pointer; }