:root {
  color-scheme: light dark;
  --bg: #f6f7fb;
  --bg-elevated: #ffffff;
  --fg: #141824;
  --muted: #5b6478;
  --accent: #2f6fed;
  --accent-soft: rgba(47, 111, 237, 0.12);
  --border: rgba(20, 24, 36, 0.1);
  --card: #ffffff;
  --highlight: #e8f0ff;
  --player-bg: #eef2fb;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(20, 24, 36, 0.06);
  --max: 46rem;
  --font: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --mini-h: 56px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020;
    --bg-elevated: #12182a;
    --fg: #f4f7ff;
    --muted: #9aa6c2;
    --accent: #7aa2ff;
    --accent-soft: rgba(122, 162, 255, 0.16);
    --border: rgba(255, 255, 255, 0.1);
    --card: rgba(255, 255, 255, 0.04);
    --highlight: rgba(122, 162, 255, 0.18);
    --player-bg: rgba(255, 255, 255, 0.05);
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  min-height: 100vh;
}
body.has-mini-bar { padding-bottom: var(--mini-h); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { opacity: 0.9; }
img, audio { max-width: 100%; }
button, select { font: inherit; }

.wrap {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: 1.5rem 0 4rem;
}

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.site-header h1 { margin: 0; font-size: 1.35rem; letter-spacing: -0.02em; }
.site-header .tag { color: var(--muted); font-size: 0.9rem; }
.site-header a.home { color: inherit; text-decoration: none; }

.lede { color: var(--muted); margin: 0 0 1.75rem; }

.brief-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }

.brief-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow);
}
.brief-card.is-open {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
.brief-card .card-head .date {
  display: block;
  color: inherit;
  text-decoration: none;
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-align: left;
  width: 100%;
}
.brief-card .card-head .date:hover { color: var(--accent); }
.brief-card .meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0.25rem 0 0.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.6rem;
  align-items: center;
}
.brief-card .meta button.linkish,
.brief-card .meta a.linkish {
  color: var(--accent);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font: inherit;
  font-size: inherit;
  text-decoration: none;
}
.brief-card .headlines { margin: 0; padding-left: 1.1rem; }
.brief-card .headlines li { margin: 0.2rem 0; }
.brief-card .headlines button {
  color: var(--fg);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font: inherit;
  text-align: left;
  text-decoration: none;
}
.brief-card .headlines button:hover { color: var(--accent); }

.brief-expand {
  display: none;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.brief-card.is-open .brief-expand { display: block; }
.brief-card.is-open .headlines { display: none; }

.permalink-row {
  margin: 1rem 0 0;
  font-size: 0.88rem;
}
.permalink-row a { color: var(--muted); }

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 1.5rem;
  flex-wrap: wrap;
}
.post-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  border: 1px solid var(--border);
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: var(--bg-elevated);
}
.post-nav a:hover { color: var(--accent); border-color: var(--accent); }

.story {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.25rem 1.1rem;
  margin: 1rem 0;
  box-shadow: var(--shadow);
  scroll-margin-top: 0.75rem;
}
.brief-expand .story {
  background: var(--bg-elevated);
}
.story.active-chapter {
  outline: 2px solid var(--accent);
  border-color: transparent;
  background: color-mix(in srgb, var(--highlight) 55%, var(--card));
}
.story h2 {
  margin: 0 0 0.6rem;
  font-size: 1.15rem;
  letter-spacing: -0.015em;
  line-height: 1.35;
}
.story p { margin: 0 0 0.85rem; }
.story .sources { margin: 0; padding-left: 1.1rem; }
.story .sources li { margin: 0.25rem 0; }

.listen-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  text-decoration: none;
  margin-bottom: 0.65rem;
  border: 0;
  cursor: pointer;
  font-family: inherit;
}
.listen-link:hover { filter: brightness(1.05); }

/* Inline player — NEVER sticky, never overlays */
.spoken-player {
  position: static;
  background: var(--player-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem 1rem;
  margin: 0 0 1.25rem;
  box-shadow: var(--shadow);
}
.spoken-player h2 {
  margin: 0 0 0.55rem;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 650;
}
.spoken-player audio { width: 100%; margin-bottom: 0.7rem; }
.player-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.55rem;
}
.player-controls button,
.player-controls select {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--fg);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
}
.player-controls button:hover,
.player-controls select:hover { border-color: var(--accent); }
.player-controls .spacer { flex: 1; min-width: 0.5rem; }

.chapters-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--fg);
  border-radius: 10px;
  padding: 0.55rem 0.75rem;
  cursor: pointer;
  text-align: left;
}
.chapters-toggle:hover { border-color: var(--accent); }
.chapters-toggle .label { font-weight: 650; font-size: 0.9rem; }
.chapters-toggle .current-name {
  color: var(--muted);
  font-size: 0.85rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  text-align: right;
}
.chapters-toggle .chevron { color: var(--muted); flex-shrink: 0; }

.chapters-panel { display: none; margin-top: 0.5rem; }
.chapters-panel.is-open { display: block; }

.chapters {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
  /* no max-height, no overflow scroll — normal document flow */
}
.chapters button {
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--fg);
  border-radius: 10px;
  padding: 0.45rem 0.6rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
}
.chapters button:hover { background: var(--accent-soft); }
.chapters button.current {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  font-weight: 650;
}
.chapters .time {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.8rem;
  white-space: nowrap;
}

/* Bottom mini-bar */
.mini-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  height: var(--mini-h);
  display: none;
  align-items: center;
  gap: 0.4rem;
  padding: 0 0.65rem;
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.12);
}
.mini-bar.is-visible { display: flex; }
.mini-bar button {
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
  border-radius: 999px;
  width: 2.15rem;
  height: 2.15rem;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  line-height: 1;
}
.mini-bar button:hover { border-color: var(--accent); color: var(--accent); }
.mini-bar .mini-info {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  text-align: left;
  padding: 0.15rem 0.35rem;
  border-radius: 8px;
  width: auto;
  height: auto;
  display: block;
}
.mini-bar .mini-info:hover { background: var(--accent-soft); }
.mini-bar .mini-line1 {
  font-size: 0.78rem;
  font-weight: 650;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mini-bar .mini-line2 {
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  .wrap { width: min(100% - 1.25rem, var(--max)); padding-top: 1rem; }
  .site-header { flex-direction: column; align-items: flex-start; }
  .mini-bar { padding: 0 0.45rem; gap: 0.25rem; }
  .mini-bar button { width: 2rem; height: 2rem; }
  .chapters-toggle { flex-wrap: wrap; }
  .chapters-toggle .current-name { text-align: left; flex-basis: 100%; }
}