/* Shared styles for /decks/ (演讲 index) and /decks/<slug>/ detail pages.
   Colors follow the main site: slate text, amber accent. */
:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --text: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #d97706;
  --accent-soft: #fef3c7;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { display: flex; justify-content: space-between; align-items: center; height: 64px; gap: 16px; }
.brand { font-weight: 700; font-size: 1.15rem; text-decoration: none; }
.brand:hover { color: var(--accent); }
.site-nav { display: flex; gap: 20px; font-size: .95rem; flex-wrap: wrap; }
.site-nav a { text-decoration: none; color: var(--muted); }
.site-nav a:hover, .site-nav a.active { color: var(--accent); }
.site-nav a.active { font-weight: 600; }

/* Hero */
.hero { padding: 56px 0 32px; }
.eyebrow { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin: 0 0 12px; }
.hero h1 { font-size: clamp(1.8rem, 4.5vw, 2.6rem); line-height: 1.3; margin: 0 0 16px; letter-spacing: -.01em; }
.hero p.lead { font-size: 1.08rem; color: #334155; max-width: 640px; margin: 0; }
.stats { display: flex; gap: 40px; margin-top: 32px; flex-wrap: wrap; }
.stat b { display: block; font-size: 1.8rem; line-height: 1.2; }
.stat span { color: var(--muted); font-size: .9rem; }

/* Library */
.library { padding: 24px 0 64px; }
.library > h2 { font-size: 1.4rem; margin: 0 0 4px; }
.library > .sub { color: var(--muted); margin: 0 0 20px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.chip { border: 1px solid var(--line); background: var(--bg); color: var(--text); border-radius: 999px; padding: 4px 14px; font: inherit; font-size: .88rem; cursor: pointer; }
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--text); border-color: var(--text); color: #fff; }
.chip .n { opacity: .6; margin-left: 4px; }
.group { margin-top: 40px; }
.group-head { display: flex; gap: 14px; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-bottom: 20px; }
.group-head .num { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--accent); font-weight: 600; }
.group-head h3 { margin: 0; font-size: 1.15rem; }
.group-head p { margin: 0; color: var(--muted); font-size: .92rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr)); gap: 20px; }

.card { border: 1px solid var(--line); border-radius: 12px; padding: 22px; display: flex; flex-direction: column; gap: 10px; background: var(--bg); transition: border-color .15s, box-shadow .15s; }
.card:hover { border-color: #fcd34d; box-shadow: 0 6px 20px rgba(15, 23, 42, .06); }
.meta { display: flex; justify-content: space-between; gap: 12px; font-size: .85rem; color: var(--muted); }
.meta .org { color: var(--text); font-weight: 600; }
.card h4 { margin: 0; font-size: 1.15rem; line-height: 1.45; }
.card h4 a { text-decoration: none; }
.card h4 a:hover { color: var(--accent); }
.crumbs { font-size: .8rem; color: var(--muted); }
.card p { margin: 0; color: #334155; font-size: .95rem; }
.audience { font-size: .88rem; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 6px; }
.btn { display: inline-block; text-decoration: none; font-size: .88rem; font-weight: 600; padding: 7px 14px; border-radius: 8px; border: 1px solid var(--line); }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #b45309; border-color: #b45309; color: #fff; }

/* Guest interviews */
.eps { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); gap: 20px; margin-top: 20px; }
.ep { display: flex; flex-direction: column; text-decoration: none; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--bg); transition: border-color .15s, box-shadow .15s, transform .15s; }
.ep:hover { border-color: #fcd34d; box-shadow: 0 6px 20px rgba(15, 23, 42, .06); transform: translateY(-2px); }
.ep-cover { aspect-ratio: 3 / 4; background: var(--bg-soft); overflow: hidden; }
.ep-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }
.ep-body { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 6px; }
.ep-show { font-size: .82rem; color: var(--muted); font-weight: 600; }
.ep h4 { margin: 0; font-size: 1.02rem; line-height: 1.5; }
.ep:hover h4 { color: var(--accent); }
.ep-tags span { display: inline-block; font-size: .78rem; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 0 10px; }

/* Detail page */
.detail { padding: 48px 0 64px; max-width: 760px; }
.back { font-size: .9rem; color: var(--muted); text-decoration: none; }
.back:hover { color: var(--accent); }
.detail h1 { font-size: clamp(1.7rem, 4.5vw, 2.4rem); line-height: 1.3; margin: 16px 0 12px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 20px; margin: 24px 0; padding: 18px 20px; background: var(--bg-soft); border-radius: 10px; font-size: .95rem; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
.detail h2 { font-size: 1.2rem; margin: 36px 0 12px; }
.detail p { color: #334155; }
.outline { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); }
.outline section { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.outline h3 { margin: 0 0 8px; font-size: 1rem; }
.outline ol { margin: 0; padding-left: 0; list-style: none; font-size: .92rem; color: #334155; }
.outline li { padding: 2px 0; }
.outline li b { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--accent); margin-right: 8px; font-weight: 600; }

.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; padding: 24px 0 40px; }
.site-footer a { color: var(--muted); }

@media (max-width: 600px) {
  .header-inner { height: auto; padding: 14px 0; flex-direction: column; align-items: flex-start; gap: 6px; }
  .hero { padding-top: 36px; }
  .stats { gap: 28px; }
}