:root {
  color-scheme: light;
  --paper: #f4eee2;
  --paper-raised: #fffaf1;
  --ink: #29231e;
  --muted: #6f655b;
  --accent: #91442f;
  --accent-dark: #713221;
  --rule: #d8cdbd;
  --reading-width: 72rem;
  font-family: Georgia, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.65;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.75rem;
  padding: 0.5rem clamp(1rem, 4vw, 3rem);
  background: rgb(255 250 241 / 94%);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.directory,
.episode-reader {
  width: min(calc(100% - 2rem), var(--reading-width));
  margin-inline: auto;
  padding-block: clamp(2rem, 6vw, 5rem);
}

.directory h1,
.episode-heading h1 {
  max-width: 18ch;
  margin: 0.3rem 0;
  font-size: clamp(2.2rem, 7vw, 4.8rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.lede,
.chinese-title {
  max-width: 42rem;
  margin: 0.5rem 0 2rem;
  color: var(--muted);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, sans-serif;
}

.eyebrow,
.speaker,
.episode-number {
  color: var(--accent);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.episode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1rem;
}

.episode-card {
  display: flex;
  flex-direction: column;
  min-height: 9.5rem;
  padding: 1.25rem;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: 0.5rem;
  text-decoration: none;
  transition:
    border-color 160ms ease,
    transform 160ms ease;
}

.episode-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.episode-card strong {
  margin: auto 0 0.35rem;
  font-size: 1.15rem;
  line-height: 1.25;
}

.episode-card > span:last-child {
  color: var(--muted);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, sans-serif;
}

.chinese-toggle {
  min-height: 2.75rem;
  padding: 0.55rem 0.9rem;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: white;
  cursor: pointer;
  font: 700 0.9rem/1 ui-sans-serif, system-ui, sans-serif;
}

.chinese-toggle:hover {
  background: var(--accent-dark);
}

.episode-heading {
  margin-bottom: clamp(3rem, 8vw, 6rem);
}

.act-navigation {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.act-navigation a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.9rem;
  text-decoration: none;
}

.act {
  scroll-margin-top: 5rem;
  margin-bottom: clamp(4rem, 10vw, 8rem);
}

.act > h2 {
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--ink);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.dialogue-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding-block: 1.15rem;
  border-bottom: 1px solid var(--rule);
}

.speaker,
.dialogue-text {
  margin: 0;
}

.dialogue-text {
  max-width: 42ch;
  font-size: clamp(1rem, 1.7vw, 1.14rem);
}

.chinese-column {
  padding-top: 1.254rem;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, sans-serif;
}

.chinese-column .dialogue-text {
  font-size: 16px;
}

[data-chinese-hidden="true"] [data-chinese-text] {
  visibility: hidden;
}

.episode-navigation {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  width: min(calc(100% - 2rem), var(--reading-width));
  margin-inline: auto;
  padding: 0 0 4rem;
}

.episode-navigation a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--accent);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-weight: 700;
}

.next-episode {
  margin-left: auto;
  text-align: right;
}

@media (max-width: 720px) {
  .site-header {
    align-items: center;
  }

  .directory,
  .episode-reader {
    width: min(calc(100% - 1.25rem), var(--reading-width));
  }

  .dialogue-line {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .dialogue-text {
    max-width: none;
  }

  .chinese-column {
    padding-top: 0;
  }

  .episode-navigation {
    flex-direction: column;
    width: min(calc(100% - 1.25rem), var(--reading-width));
  }

  .next-episode {
    margin-left: 0;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .episode-card {
    transition: none;
  }
}

@media print {
  .site-header,
  .episode-navigation,
  .act-navigation {
    display: none;
  }

  body {
    background: white;
  }

  .episode-reader {
    width: 100%;
    padding: 0;
  }
}