:root {
  color-scheme: light;
  --ink: #182323;
  --muted: #596765;
  --paper: #f7f8f5;
  --white: #ffffff;
  --teal: #153c3a;
  --teal-bright: #1f6a62;
  --red: #b94032;
  --line: #d7ddda;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

button { font: inherit; }

.hero {
  position: relative;
  min-height: 540px;
  height: 72vh;
  max-height: 720px;
  overflow: hidden;
  background: #162d2d;
  color: var(--white);
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image { object-fit: cover; object-position: center 52%; }

.hero-shade {
  background: rgba(8, 27, 28, .66);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding-top: clamp(86px, 15vh, 150px);
}

.school,
.section-kicker {
  margin: 0 0 16px;
  color: #b9e0d9;
  font-size: 14px;
  font-weight: 700;
}

.hero h1 {
  margin: 0;
  font-family: SimSun, STSong, serif;
  font-size: clamp(64px, 9vw, 112px);
  line-height: .98;
  font-weight: 700;
}

.headline {
  margin: 22px 0 0;
  font-family: SimSun, STSong, serif;
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
}

.lead {
  max-width: 640px;
  margin: 24px 0 0;
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .88);
}

.audio-band {
  background: var(--teal);
  color: var(--white);
}

.audio-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 520px);
  gap: 64px;
  align-items: center;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 44px 0;
}

.audio-copy h2,
.section-heading h2 {
  margin: 0;
  font-family: SimSun, STSong, serif;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
}

.player-status {
  margin: 14px 0 0;
  color: #cbdedb;
  font-size: 15px;
}

.player-shell { min-width: 0; }

.play-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  min-height: 58px;
  padding: 14px 20px;
  border: 0;
  border-radius: 6px;
  background: var(--white);
  color: var(--teal);
  font-weight: 800;
  cursor: pointer;
  touch-action: manipulation;
}

.play-button:active { transform: translateY(1px); }
.play-icon { width: 20px; font-size: 18px; text-align: center; }

.progress-row {
  display: grid;
  grid-template-columns: 44px minmax(80px, 1fr) auto;
  gap: 12px;
  align-items: center;
  margin-top: 16px;
  font-size: 12px;
  color: #cbdedb;
  font-variant-numeric: tabular-nums;
}

.progress-track {
  height: 4px;
  overflow: hidden;
  background: rgba(255, 255, 255, .25);
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: #f2b8a9;
}

.story-section,
.timeline-section {
  width: min(960px, calc(100% - 48px));
  margin: 0 auto;
  padding: 84px 0;
}

.section-heading { max-width: 720px; }
.section-heading .section-kicker { color: var(--red); }

.story-copy {
  columns: 2;
  column-gap: 56px;
  margin-top: 44px;
}

.story-copy p {
  break-inside: avoid;
  margin: 0 0 24px;
  color: #34413f;
  font-family: SimSun, STSong, serif;
  font-size: 18px;
  line-height: 2;
  text-align: justify;
}

.timeline-section { border-top: 1px solid var(--line); }

.timeline {
  list-style: none;
  margin: 48px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.timeline li {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.timeline li > span { color: var(--red); font-weight: 800; }
.timeline h3 { margin: 0; font-size: 20px; }
.timeline p { margin: 8px 0 0; color: var(--muted); line-height: 1.7; }

blockquote {
  margin: 0;
  padding: 72px 24px;
  background: var(--red);
  color: var(--white);
  font-family: SimSun, STSong, serif;
  font-size: clamp(28px, 5vw, 52px);
  line-height: 1.45;
  text-align: center;
}

footer {
  padding: 28px 24px calc(28px + env(safe-area-inset-bottom));
  background: #101918;
  color: #aab5b2;
  text-align: center;
  font-size: 13px;
}

footer p { margin: 0; }

@media (max-width: 720px) {
  .hero { min-height: 510px; height: 68vh; max-height: 610px; }
  .hero-content { width: min(100% - 36px, 560px); padding-top: 72px; }
  .hero-shade { background: rgba(8, 27, 28, .7); }
  .hero-image { object-position: 62% center; }
  .lead { font-size: 16px; line-height: 1.75; }
  .audio-inner { grid-template-columns: 1fr; gap: 28px; width: min(100% - 36px, 560px); padding: 34px 0 38px; }
  .story-section,
  .timeline-section { width: min(100% - 36px, 560px); padding: 58px 0; }
  .story-copy { columns: 1; margin-top: 34px; }
  .story-copy p { font-size: 17px; line-height: 1.92; }
  .timeline li { grid-template-columns: 1fr; gap: 10px; }
  blockquote { padding: 56px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .play-button:active { transform: none; }
}