:root {
  color-scheme: light;
  --paper: #f4f1eb;
  --ink: #202426;
  --muted: #6d7375;
  --line: #9ca6a4;
  --blue: #2f7f9f;
  --green: #5f836e;
  --red: #9b584f;
  --gold: #9b7a3b;
  --card: rgba(255, 252, 246, 0.76);
  font-family:
    "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun",
    serif;
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
  background: var(--paper);
}

body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.8), transparent 28rem),
    radial-gradient(circle at 84% 12%, rgba(47, 127, 159, 0.12), transparent 20rem),
    radial-gradient(circle at 12% 90%, rgba(155, 122, 59, 0.13), transparent 22rem),
    var(--paper);
  color: var(--ink);
}

.page {
  display: flex;
  height: 100dvh;
  flex-direction: column;
  width: 100%;
  margin: 0 auto;
  padding: clamp(28px, 4vh, 42px) 0 24px;
}

.hero {
  width: min(1180px, calc(100% - 48px));
  max-width: 760px;
  margin-left: 48px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 11em;
  font-size: clamp(42px, 5vw, 64px);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 0.96;
}

.intro {
  max-width: 680px;
  margin-top: 18px;
  color: var(--muted);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.timeline-section {
  flex: 1;
  min-height: 0;
  margin-top: 20px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 18px 0 26px;
  cursor: grab;
  scrollbar-width: none;
}

.timeline-section.is-dragging {
  cursor: grabbing;
  user-select: none;
}

.timeline-section::-webkit-scrollbar {
  display: none;
}

.edge-jump {
  position: fixed;
  top: 50%;
  z-index: 10;
  display: grid;
  width: 44px;
  height: 74px;
  place-items: center;
  transform: translateY(-50%);
  border: 1px solid rgba(32, 36, 38, 0.08);
  border-radius: 999px;
  background: rgba(255, 252, 246, 0.68);
  box-shadow: 0 16px 44px rgba(44, 39, 32, 0.1);
  color: rgba(32, 36, 38, 0.62);
  cursor: pointer;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 44px;
  line-height: 1;
  backdrop-filter: blur(12px);
}

.edge-jump:hover {
  color: var(--ink);
  background: rgba(255, 252, 246, 0.9);
}

.edge-jump-left {
  left: 18px;
}

.edge-jump-right {
  right: 18px;
}

.timeline {
  position: relative;
  display: grid;
  width: max-content;
  min-width: 100%;
  grid-auto-columns: max(196px, 10vw);
  grid-auto-flow: column;
  grid-template-columns: none;
  align-items: start;
  gap: 0;
  padding: 0 112px;
  --axis-y: 250px;
}

.timeline::before {
  position: absolute;
  top: var(--axis-y);
  right: -112px;
  left: -112px;
  height: 2px;
  transform: translateY(-50%);
  background:
    linear-gradient(90deg, transparent, var(--line) 8%, var(--line) 92%, transparent),
    repeating-linear-gradient(90deg, transparent 0 13px, rgba(32, 36, 38, 0.28) 13px 18px);
  content: "";
}

.event {
  position: relative;
  display: block;
  width: max(196px, 10vw);
  height: 340px;
}

.event:nth-child(odd) .event-body {
  position: absolute;
  bottom: calc(100% - var(--axis-y) + 44px);
  left: 50%;
  transform: translateX(-50%);
}

.event:nth-child(even) .event-body {
  position: absolute;
  top: calc(var(--axis-y) + 44px);
  left: 50%;
  transform: translateX(-50%);
}

.event:nth-child(odd) time {
  position: absolute;
  top: calc(var(--axis-y) + 34px);
  left: 0;
  width: 100%;
}

.event:nth-child(even) time {
  position: absolute;
  bottom: calc(100% - var(--axis-y) + 34px);
  left: 0;
  width: 100%;
}

.marker {
  position: absolute;
  top: var(--axis-y);
  left: 50%;
  z-index: 2;
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 255, 255, 0.56);
  border-radius: 50%;
  background: var(--blue);
  box-shadow:
    0 18px 40px rgba(47, 127, 159, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  color: #fff;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 800;
}

.event-body {
  display: grid;
  width: 154px;
  min-width: 154px;
  max-width: 154px;
  height: 220px;
  grid-template-rows: minmax(34px, auto) minmax(0, 1fr);
  gap: 10px;
  padding: 10px 12px 11px;
  overflow: hidden;
  border: 1px solid rgba(32, 36, 38, 0.08);
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 20px 70px rgba(44, 39, 32, 0.08);
  backdrop-filter: blur(12px);
}

.event > time {
  display: block;
  color: var(--muted);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 750;
  text-align: center;
}

h2 {
  width: 100%;
  max-width: 100%;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.05;
  overflow-wrap: anywhere;
  text-align: right;
  justify-self: end;
  writing-mode: horizontal-tb;
}

.latin {
  display: inline;
  font-family: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", serif;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.05;
  overflow-wrap: anywhere;
  white-space: normal;
  writing-mode: horizontal-tb;
}

.event-body p {
  max-width: 116px;
  max-height: 100%;
  margin-top: 0;
  margin-right: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.35;
  overflow-wrap: anywhere;
  text-orientation: mixed;
  word-break: break-word;
  writing-mode: vertical-rl;
  justify-self: end;
  align-self: start;
}

.phase-rise .marker,
.phase-open .marker {
  background: var(--green);
  box-shadow: 0 18px 40px rgba(95, 131, 110, 0.22);
}

.phase-peak .marker,
.phase-shock .marker {
  background: var(--gold);
  box-shadow: 0 18px 40px rgba(155, 122, 59, 0.22);
}

.phase-decline .marker {
  background: var(--red);
  box-shadow: 0 18px 40px rgba(155, 88, 79, 0.22);
}

.phase-decline .event-body {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(155, 88, 79, 0.16) 0 1px,
      transparent 1px 9px
    ),
    repeating-linear-gradient(
      132deg,
      transparent 0 5px,
      rgba(155, 88, 79, 0.08) 5px 6px,
      transparent 6px 13px
    ),
    rgba(255, 252, 246, 0.82);
}

.phase-decline .event-body h2,
.phase-decline .event-body p {
  color: rgba(32, 36, 38, 0.78);
}

@media (max-width: 760px) {
  .page {
    height: 100dvh;
    min-height: 0;
    width: 100%;
    padding: 34px 0 24px;
  }

  .hero {
    width: min(100% - 36px, 520px);
    margin: 0 auto;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(34px, 10vw, 40px);
    line-height: 1.02;
    word-break: break-all;
  }

  .intro {
    max-width: 300px;
    margin-top: 22px;
    font-size: 16px;
    line-height: 1.62;
  }

  .timeline-section {
    flex: 1;
    min-height: 0;
    margin-top: 34px;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 0 18px 18px;
    cursor: auto;
    scrollbar-width: none;
  }

  .timeline-section::-webkit-scrollbar {
    display: none;
  }

  .edge-jump {
    display: none;
  }

  .timeline {
    display: block;
    min-width: 0;
    width: 100%;
    padding: 0;
    --axis-x: 190px;
  }

  .timeline::before {
    top: 4px;
    bottom: 4px;
    left: var(--axis-x);
    width: 2px;
    height: auto;
    transform: translateX(-50%);
    background: linear-gradient(180deg, var(--line), rgba(156, 166, 164, 0.28));
  }

  .event,
  .event:nth-child(even) {
    position: relative;
    display: grid;
    width: 100%;
    max-width: none;
    height: auto;
    min-height: 250px;
    margin-left: 0;
    grid-template-columns: calc(var(--axis-x) - 21px) 42px minmax(0, 1fr);
    grid-template-rows: auto;
    align-items: center;
    padding: 0 0 34px;
  }

  .event:last-child {
    padding-bottom: 0;
  }

  .marker,
  .event:nth-child(even) .marker {
    position: absolute;
    top: 50%;
    left: var(--axis-x);
    width: 34px;
    height: 34px;
    transform: translate(-50%, -50%);
    font-size: 11px;
  }

  .event-body,
  .event:nth-child(odd) .event-body,
  .event:nth-child(even) .event-body {
    position: static;
    width: 132px;
    min-width: 132px;
    max-width: 132px;
    height: 230px;
    grid-template-rows: minmax(34px, auto) minmax(0, 1fr);
    margin: 0;
    padding: 8px 8px 9px;
    transform: none;
  }

  .event:nth-child(odd) .event-body {
    grid-column: 3;
    margin-left: 8px;
    justify-self: start;
  }

  .event:nth-child(even) .event-body {
    grid-column: 1;
    margin-right: 6px;
    justify-self: end;
  }

  .event > time,
  .event:nth-child(odd) time,
  .event:nth-child(even) time {
    position: static;
    width: auto;
    grid-row: 1;
    align-self: center;
    margin: 0;
    overflow-wrap: anywhere;
    font-size: 12px;
    line-height: 1.2;
  }

  .event:nth-child(odd) time {
    grid-column: 1;
    padding-right: 8px;
    text-align: right;
    justify-self: end;
  }

  .event:nth-child(even) time {
    grid-column: 3;
    padding-left: 8px;
    text-align: left;
    justify-self: start;
  }

  h2 {
    font-size: 20px;
    line-height: 1.14;
  }

  .event-body p {
    max-width: 98px;
    max-height: 100%;
    margin-right: 0;
    font-size: 14px;
    line-height: 1.32;
  }
}