:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6b6b70;
  --line: #e4e4e0;
  --accent: #3b5bdb;
  --chip-bg: #ecece8;
  --chip-on-bg: #1d1d1f;
  --chip-on-text: #ffffff;
  --cat-official: #4c5fd5;
  --cat-news: #0f7f72;
  --cat-community: #b4580a;
  --focus: #3b5bdb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --surface: #1c1c1f;
    --text: #ececef;
    --muted: #9a9aa2;
    --line: #2c2c31;
    --accent: #8ea2ff;
    --chip-bg: #26262b;
    --chip-on-bg: #ececef;
    --chip-on-text: #141416;
    --cat-official: #9aa8ff;
    --cat-news: #5ccfbe;
    --cat-community: #f0a35c;
    --focus: #8ea2ff;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.6;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.site-header { padding: 40px 0 20px; }
.site-name { margin: 0 0 4px; color: var(--muted); font-size: .85rem; letter-spacing: .02em; }
h1 { margin: 0; font-size: clamp(1.7rem, 4vw, 2.2rem); font-weight: 700; letter-spacing: .01em; }
.lead { margin: 8px 0 0; color: var(--muted); }
.updated { margin: 12px 0 0; font-size: .85rem; color: var(--muted); font-variant-numeric: tabular-nums; }

.controls {
  position: sticky; top: 0; z-index: 1;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}
@media (max-width: 640px) {
  .controls { position: static; backdrop-filter: none; }   /* don't pin ~30% of a phone screen */
}
.controls .wrap { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; }
.search { flex: 1 1 260px; }
.search input {
  width: 100%; font: inherit; font-size: .95rem;
  padding: 8px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips button {
  font: inherit; font-size: .85rem; cursor: pointer;
  padding: 5px 12px; border-radius: 999px; border: 0;
  background: var(--chip-bg); color: var(--text);
}
.chips button[aria-pressed="true"] { background: var(--chip-on-bg); color: var(--chip-on-text); }

main { padding-top: 8px; padding-bottom: 32px; }
.day h2 {
  margin: 28px 0 8px; font-size: .95rem; font-weight: 600; color: var(--muted);
}
.items { list-style: none; margin: 0; padding: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.item { padding: 14px 16px; border-top: 1px solid var(--line); }
.item:first-child { border-top: 0; }
.meta { display: flex; align-items: center; gap: 10px; font-size: .8rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.src { font-weight: 600; }
.cat-official { color: var(--cat-official); }
.cat-news { color: var(--cat-news); }
.cat-community { color: var(--cat-community); }
.title {
  display: block; margin-top: 2px;
  font-size: 1.02rem; font-weight: 600; line-height: 1.5;
  text-decoration: none; overflow-wrap: anywhere;
}
.title:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.title:visited { color: var(--muted); }
.summary { margin: 4px 0 0; font-size: .88rem; color: var(--muted); overflow-wrap: anywhere; }
.empty { margin: 40px 0; text-align: center; color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: .85rem; }
.site-footer h2 { font-size: .9rem; margin: 0 0 8px; color: var(--text); }
.sources { display: flex; flex-wrap: wrap; gap: 6px 14px; list-style: none; margin: 0 0 12px; padding: 0; }
.note { margin: 0; }