:root {
  color-scheme: light dark;
  --bg: #f6f7f9; --surface: #ffffff; --text: #14171f; --muted: #535b6b;
  --border: #d9dde5; --accent: #3446d4; --accent-text: #ffffff; --focus: #1f2fb3;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --surface: #171a21; --text: #e8eaf0; --muted: #a3aab8;
    --border: #2b303b; --accent: #8b97ff; --accent-text: #0f1115; --focus: #b8c0ff;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.5; }
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
header { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  padding: 12px 24px; background: var(--surface); border-bottom: 1px solid var(--border); }
.brand { font-weight: 700; font-size: 1.125rem; letter-spacing: .02em; }
.account { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; color: var(--muted); }
@media (max-width: 480px) { header { padding: 12px 16px; } }
main { max-width: 960px; margin: 0 auto; padding: 32px 16px; }
h1 { font-size: 1.5rem; margin: 0 0 8px; }
p { margin: 0 0 16px; }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; padding: 0; list-style: none; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.card h2 { font-size: 1.125rem; margin: 0 0 4px; }
.button { display: inline-block; padding: 8px 16px; border-radius: 8px; border: 1px solid var(--accent);
  background: var(--accent); color: var(--accent-text); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.button.secondary { background: transparent; color: var(--accent); }
.badge { display: inline-block; font-size: .8125rem; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
form.inline { display: inline-flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0; max-width: 100%; }
select { max-width: 100%; min-width: 0; font: inherit; padding: 6px 8px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); }
.center { max-width: 480px; margin: 12vh auto; text-align: center; }