:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --ink: #1a2333;
  --muted: #5c6b82;
  --line: #e3e7ee;
  --accent: #16457c;
  --wi: #16457c;
  --cs: #7c3aed;
  --mt: #0e7a5f;
  --nr: #b45309;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

header {
  background: linear-gradient(135deg, #10294a 0%, #16457c 100%);
  color: #fff;
  padding: 2.2rem 1.5rem 1.8rem;
}
.header-inner { max-width: 880px; margin: 0 auto; }
h1 { font-size: 1.55rem; font-weight: 700; letter-spacing: -0.01em; }
.subtitle { margin-top: .45rem; font-size: .9rem; color: #c8d6ea; }
#updated { color: #9fb6d4; }

.tabs {
  position: sticky; top: 0; z-index: 10;
  display: flex; flex-wrap: wrap; gap: .4rem; align-items: center;
  max-width: 880px; margin: 0 auto; padding: .7rem 1.5rem;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.tab {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
  padding: .35rem .85rem;
  border-radius: 999px;
  font-size: .85rem;
  cursor: pointer;
}
.tab:hover { border-color: var(--accent); color: var(--accent); }
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
#search {
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .38rem .9rem;
  font-size: .85rem;
  min-width: 230px;
  background: var(--card);
  color: var(--ink);
}
#search:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.topic-row {
  max-width: 880px; margin: 0 auto;
  display: flex; flex-wrap: wrap; align-items: center; gap: .45rem;
  padding: .65rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: #fbfcfe;
}
.topic-row-label { font-size: .78rem; color: var(--muted); font-weight: 600; margin-right: .1rem; }
.topic-chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chip {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
  font-size: .76rem;
  padding: .22rem .65rem;
  border-radius: 999px;
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.topic-clear {
  margin-left: .3rem;
  border: none; background: none;
  color: var(--accent); font-size: .78rem; text-decoration: underline;
  cursor: pointer;
}

main { max-width: 880px; margin: 0 auto; padding: 1.1rem 1.5rem 3rem; }
.count { font-size: .8rem; color: var(--muted); margin: .2rem 0 .9rem; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  margin-bottom: .8rem;
}
.card-head { display: flex; gap: .6rem; align-items: baseline; flex-wrap: wrap; margin-bottom: .35rem; }
.badge {
  font-size: .7rem; font-weight: 600; letter-spacing: .03em;
  padding: .13rem .55rem; border-radius: 4px; color: #fff; white-space: nowrap;
}
.badge.written-input { background: var(--wi); }
.badge.cryptosec { background: var(--cs); }
.badge.meetings { background: var(--mt); }
.badge.newsroom { background: var(--nr); }
.date { font-size: .8rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.author { font-size: .8rem; color: var(--muted); }

.card h2 { font-size: 1.02rem; font-weight: 650; margin: .1rem 0 .3rem; }
.card h2 a { color: var(--ink); text-decoration: none; }
.card h2 a:hover { color: var(--accent); text-decoration: underline; }

.takeaway {
  font-size: .89rem; font-weight: 600; color: var(--accent);
  margin: 0 0 .55rem; line-height: 1.4;
}

.points { margin: 0 0 .5rem 1.15rem; }
.points li { font-size: .89rem; margin-bottom: .28rem; color: #2b3648; }

.topics { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .4rem; }
.topic {
  font-size: .7rem; color: var(--muted);
  border: 1px solid var(--line); border-radius: 4px; padding: .08rem .45rem;
  background: var(--bg);
  cursor: pointer;
  font-family: inherit;
}
.topic:hover { border-color: var(--accent); color: var(--accent); }
.thin-note { font-size: .78rem; color: #a16207; }

footer {
  border-top: 1px solid var(--line);
  padding: 1.4rem 1.5rem 2.5rem;
  text-align: center;
  font-size: .78rem;
  color: var(--muted);
}
footer a { color: var(--accent); }

.empty { text-align: center; color: var(--muted); padding: 3rem 0; font-size: .9rem; }

@media (max-width: 640px) {
  #search { min-width: 100%; margin: .3rem 0 0; }
  header { padding: 1.6rem 1rem 1.3rem; }
  .tabs, main { padding-left: 1rem; padding-right: 1rem; }
}