:root {
  --bg: #fafafa;
  --card: #fff;
  --border: #e2e2e2;
  --accent: #2b6cb0;
  --muted: #777;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", Meiryo, sans-serif;
  background: var(--bg);
  color: #222;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
header h1 { font-size: 1.2rem; margin: 0; }
header h1 a { color: #222; }
.ingest-form button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  cursor: pointer;
}

main { max-width: 760px; margin: 0 auto; padding: 1rem; }

.filters { margin-bottom: 1rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.filters a {
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  font-size: 0.85rem;
}
.filters a.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.empty { color: var(--muted); }

.articles { list-style: none; padding: 0; margin: 0; }
.article, .detail {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.article h2 { font-size: 1.05rem; margin: 0.2rem 0 0.5rem; }
.meta { font-size: 0.78rem; color: var(--muted); display: flex; gap: 0.8rem; }
.meta .score { color: var(--accent); font-weight: 600; }

.summary { margin: 0.35rem 0; }
.summary p { margin: 0.1rem 0; font-size: 0.9rem; color: #444; }

.keywords { margin: 0.4rem 0; display: flex; gap: 0.35rem; flex-wrap: wrap; }
.kw {
  font-size: 0.72rem;
  background: #eef3fa;
  color: #3a5a82;
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
}

.actions { display: flex; align-items: center; gap: 1rem; margin-top: 0.5rem; }
.actions form { margin: 0; }
.like {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  font-size: 0.85rem;
}
.like.liked { background: #fff4d6; border-color: #f0c040; }

.orig-title { color: var(--muted); font-size: 0.85rem; margin: 0.2rem 0 0.5rem; }

.body p, .original p { margin: 0.6rem 0; }
.original summary { cursor: pointer; color: var(--muted); margin: 1rem 0 0.5rem; }