:root {
  --color-bg: #f7f9fc;
  --color-text: #1f2937;
  --color-primary: #2563eb;
  --color-card: #ffffff;
  --space: 1rem;
  --radius: 8px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; background: var(--color-bg); color: var(--color-text); }
.container { max-width: 1100px; margin: 0 auto; padding: var(--space); }
.site-header { background: #fff; border-bottom: 1px solid #e5e7eb; }
.nav { display: flex; align-items: center; gap: var(--space); padding: var(--space); }
.nav__menu { list-style: none; display: flex; gap: var(--space); margin: 0; padding: 0; }
.nav__toggle { display: none; }
.tile-grid { display: grid; grid-template-columns: 1fr; gap: var(--space); margin-top: 1.5rem; }
@media (min-width: 600px) { .tile-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .tile-grid { grid-template-columns: repeat(3, 1fr); } }
.tile { background: var(--color-card); border-radius: var(--radius); padding: var(--space); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.tile--link { text-decoration: none; color: inherit; display: block; }
.tile__title { margin: 0 0 .25rem; font-size: 1.1rem; }
.tile__value { font-weight: 700; }
.flash { padding: .75rem 1rem; border-radius: var(--radius); margin-bottom: .5rem; }
.flash--error { background: #fee2e2; }
.flash--success { background: #dcfce7; }
.flash--info { background: #e0f2fe; }
.form { display: grid; gap: .75rem; max-width: 480px; }
.form label { display: grid; gap: .25rem; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 1rem; top: 1rem; background: #fff; padding: .5rem; }
.pagination { display: flex; gap: .5rem; align-items: center; margin-top: 1rem; }
.link-button { background: none; border: none; cursor: pointer; color: var(--color-primary); }
.legend { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: .5rem; font-size: .9rem; }
:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; }
@media (max-width: 600px) { .nav__menu { display: none; } .nav__menu.is-open { display: flex; flex-direction: column; } }