/* Utility styling only. Intentionally plain — a design pass comes later. */
:root {
  --fg: #16191d;
  --muted: #5b6470;
  --line: #d6dae0;
  --bg: #ffffff;
  --accent: #14508c;
  --chip: #eef1f5;
}
@media (prefers-color-scheme: dark) {
  :root { --fg:#e6e9ee; --muted:#9aa4b1; --line:#333a44; --bg:#14171b; --accent:#7fb3e8; --chip:#222831; }
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 0 1rem 3rem;
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  color: var(--fg); background: var(--bg);
}
header, main, footer { max-width: 820px; margin: 0 auto; }
header { padding: 1.5rem 0 1rem; border-bottom: 1px solid var(--line); }
h1 { margin: 0; font-size: 1.5rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 .5rem; }
h3 { font-size: .95rem; margin: 1.25rem 0 .4rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.tagline { margin: .25rem 0 .75rem; color: var(--muted); }
.hint { color: var(--muted); font-size: .875rem; }
.footnote { color: var(--muted); font-size: .8rem; border-top: 1px solid var(--line); padding-top: .75rem; margin-top: 1.5rem; }
nav { display: flex; gap: .5rem; }
nav button[aria-current="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }
button {
  font: inherit; padding: .4rem .75rem; border: 1px solid var(--line);
  background: var(--bg); color: var(--fg); border-radius: 4px; cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
fieldset { border: 1px solid var(--line); border-radius: 4px; margin: 0 0 1rem; padding: .75rem 1rem 1rem; }
legend { font-weight: 600; padding: 0 .35rem; }
.options { display: flex; flex-wrap: wrap; gap: .4rem; }
.opt {
  display: inline-block; padding: .35rem .7rem; border: 1px solid var(--line);
  border-radius: 999px; cursor: pointer; background: var(--chip); font-size: .9rem;
}
.opt[aria-pressed="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.cards { list-style: none; margin: 0; padding: 0; }
.cards li { border-bottom: 1px solid var(--line); padding: .9rem 0; }
.cards a { color: var(--fg); text-decoration: none; font-weight: 600; }
.cards a:hover { color: var(--accent); text-decoration: underline; }
.meta { display: flex; gap: .5rem; flex-wrap: wrap; font-size: .8rem; color: var(--muted); margin-top: .3rem; }
.badge { background: var(--chip); border-radius: 3px; padding: .05rem .4rem; }
.src { border: 1px solid var(--line); border-radius: 4px; padding: .7rem .9rem; margin-bottom: .6rem; }
.src h4 { margin: 0 0 .2rem; font-size: 1rem; }
.src a { color: var(--accent); }
footer { padding-top: 1rem; }