/* Chrono Basin v0.8 — flat DOM */
.river-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 8px;
}

.river-head h2 {
  font-size: 42px;
  letter-spacing: .04em;
}

.timeline-head-actions {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  min-width: 0;
  padding-top: 46px;
}

.timeline-date-filter {
  width: auto;
  min-width: 176px;
}

.timeline-date-filter .date-filter-btn {
  min-width: 144px;
  height: 42px;
  padding: 0 14px;
  font-size: 16px;
  line-height: 42px;
}

.timeline-head-actions .timeline-date-filter {
  transform: none;
}

.time-river-shell {
  position: relative;
  margin-top: 0;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  height: 100%;
  min-height: 0;
  --ruler-axis-y: 245px;
  --month-width: 92px;
  --month-expanded-width: 1054px;
  --edge-fade-width: clamp(42px, 7vw, 92px);
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
}

.time-river-shell::before,
.time-river-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.time-river-shell::before {
  display: none;
}

.time-river-shell::after {
  z-index: 2;
  background-image:
    linear-gradient(90deg,
      rgba(2, 6, 23, .92) 0,
      rgba(2, 6, 23, 0) var(--edge-fade-width),
      rgba(2, 6, 23, 0) calc(100% - var(--edge-fade-width)),
      rgba(2, 6, 23, .92) 100%);
  opacity: 1;
  animation: none;
}

.time-river-scroll {
  height: 100%;
  min-height: 0;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0;
  cursor: grab;
  scroll-behavior: auto;
  overscroll-behavior: contain;
  scrollbar-width: none;
  transform: translateY(-10px);
}

.time-river-scroll::-webkit-scrollbar {
  display: none;
}

.time-river-scroll.is-dragging {
  cursor: grabbing;
}

/* track: 所有 .basin-month 直接在此 flex 容器下，顶部严格对齐 */
.time-river-track {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: flex-start;
  gap: 0;
  min-width: max-content;
  height: 100%;
  padding: 0 150px 92px;
}

.basin-axis {
  position: absolute;
  left: 96px;
  right: 96px;
  top: 0;
  height: 100%;
  z-index: 10;
  pointer-events: none;
  overflow: visible;
}

.basin-axis__line {
  position: absolute;
  left: 0;
  right: 0;
  top: var(--ruler-axis-y);
  height: 8px;
  border-radius: 999px;
  background: var(--accent-grad-main);
  opacity: 1;
  box-shadow: 0 0 16px rgba(129, 140, 248, .32), 0 0 22px rgba(14, 224, 240, .22);
  -webkit-mask-image: none;
  mask-image: none;
}

.basin-axis__particles {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(var(--ruler-axis-y) - 190px);
  height: 430px;
  overflow: visible;
}

.basin-axis__particles span {
  position: absolute;
  left: var(--particle-left, 0%);
  top: var(--particle-top, 50%);
  width: var(--particle-len, 86px);
  height: var(--particle-thick, 1.5px);
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(125, 211, 252, 0) 0%, rgba(191, 219, 254, calc(var(--particle-alpha, .45) * .32)) 38%, rgba(191, 219, 254, var(--particle-alpha, .45)) 72%, rgba(248, 250, 252, var(--particle-bright, .9)) 100%);
  box-shadow: none;
  opacity: .2;
  animation: basinParticle var(--particle-speed, 10s) linear infinite;
  animation-delay: calc(var(--i) * -0.33s);
  transform-origin: 50% 50%;
}

.basin-axis__particles span::after {
  display: none;
}

.basin-axis__particles span:nth-child(9n+1) { --particle-top: 8%; --particle-len: 72px; --particle-thick: 1px; --particle-alpha: .22; --particle-bright: .5; --particle-speed: 14s; --particle-glow: 0; --particle-glow-alpha: 0; }
.basin-axis__particles span:nth-child(9n+2) { --particle-top: 18%; --particle-len: 128px; --particle-thick: 2px; --particle-alpha: .58; --particle-bright: .95; --particle-speed: 9.4s; --particle-glow: 0; --particle-glow-alpha: 0; }
.basin-axis__particles span:nth-child(9n+3) { --particle-top: 31%; --particle-len: 94px; --particle-thick: 1.4px; --particle-alpha: .46; --particle-bright: .78; --particle-speed: 11.8s; --particle-glow: 0; --particle-glow-alpha: 0; }
.basin-axis__particles span:nth-child(9n+4) { --particle-top: 43%; --particle-len: 54px; --particle-thick: .8px; --particle-alpha: .2; --particle-bright: .46; --particle-speed: 16s; --particle-glow: 0; --particle-glow-alpha: 0; }
.basin-axis__particles span:nth-child(9n+5) { --particle-top: 57%; --particle-len: 152px; --particle-thick: 2.4px; --particle-alpha: .62; --particle-bright: 1; --particle-speed: 8.6s; --particle-glow: 0; --particle-glow-alpha: 0; }
.basin-axis__particles span:nth-child(9n+6) { --particle-top: 70%; --particle-len: 82px; --particle-thick: 1.2px; --particle-alpha: .28; --particle-bright: .62; --particle-speed: 12.5s; --particle-glow: 0; --particle-glow-alpha: 0; }
.basin-axis__particles span:nth-child(9n+7) { --particle-top: 82%; --particle-len: 116px; --particle-thick: 1.7px; --particle-alpha: .52; --particle-bright: .86; --particle-speed: 10.2s; --particle-glow: 0; --particle-glow-alpha: 0; }
.basin-axis__particles span:nth-child(9n+8) { --particle-top: 93%; --particle-len: 64px; --particle-thick: .9px; --particle-alpha: .18; --particle-bright: .42; --particle-speed: 17s; --particle-glow: 0; --particle-glow-alpha: 0; }
.basin-axis__particles span:nth-child(9n) { --particle-top: 24%; --particle-len: 104px; --particle-thick: 1.5px; --particle-alpha: .36; --particle-bright: .72; --particle-speed: 12.4s; --particle-glow: 0; --particle-glow-alpha: 0; }

/* ── 年份标签：绝对定位叠加，不参与 flex 布局 ── */
.basin-year-label {
  position: absolute;
  top: 0;
  /* JS 回写首月真实 offset，fallback 保持旧公式 */
  left: var(--year-left, calc(150px + var(--month-offset, 0) * var(--month-width)));
  z-index: 3;
  pointer-events: none;
  width: var(--month-width);
}

.basin-year-text {
  position: absolute;
  left: 5px;
  top: calc(var(--ruler-axis-y) - 86px);
  width: 150px;
  font-size: 70px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -.06em;
  background: var(--accent-grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  opacity: .85;
  text-shadow: 0 0 22px rgba(129, 140, 248, .24);
  pointer-events: none;
  text-align: left;
}

.basin-year-tick {
  position: absolute;
  left: 0;
  top: calc(var(--ruler-axis-y) - 72px);
  width: 2px;
  height: 72px;
  border-radius: 999px;
  background: rgba(226, 232, 240, .82);
  box-shadow: 0 0 16px rgba(165, 180, 252, .44);
  pointer-events: none;
}

/* ── 月份：track 的直接 flex 子项，position: relative 作为定位上下文 ── */
.basin-month {
  position: relative;
  width: var(--month-width);
  flex: 0 0 var(--month-width);
  height: 560px;
  opacity: 1;
  transition: width .45s cubic-bezier(.2, .8, .2, 1), flex-basis .45s cubic-bezier(.2, .8, .2, 1), opacity .26s ease;
  margin: 0;
  padding: 0;
}

.basin-month.is-expanded {
  width: var(--month-expanded-width);
  flex-basis: var(--month-expanded-width);
  opacity: 1;
}

.basin-month.is-empty {
  opacity: .62;
}

.basin-subticks {
  position: absolute;
  left: 18px;
  right: 18px;
  top: var(--ruler-axis-y);
  height: 30px;
  display: none;
  pointer-events: none;
  background: repeating-linear-gradient(90deg, transparent 0 calc(25% - .5px), rgba(148, 163, 184, .34) calc(25% - .5px) 25%);
  mask-image: linear-gradient(180deg, #000 0 18px, transparent 18px);
}

.basin-tick {
  position: absolute;
  left: calc(var(--month-width) / 2);
  top: var(--ruler-axis-y);
  transform: translateX(-50%);
  width: 2px;
  height: 42px;
  border-radius: 999px;
  background: rgba(203, 213, 225, .68);
  box-shadow: 0 0 10px rgba(129, 140, 248, .22);
  pointer-events: none;
}

.basin-month-button {
  position: absolute;
  left: calc(var(--month-width) / 2);
  top: calc(var(--ruler-axis-y) + 44px);
  transform: translateX(-50%);
  z-index: 8;
  display: block;
  width: 82px;
  height: 42px;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  overflow: visible;
}

.basin-month-button:disabled {
  cursor: default;
}

.basin-month-label {
  display: block;
  width: 100%;
  line-height: 34px;
  text-align: center;
  font-size: 18px;
  font-weight: 760;
  color: rgba(241, 245, 249, .9);
  letter-spacing: .08em;
  transition: color .18s ease, text-shadow .18s ease, background-color .18s ease;
  transform-origin: center center;
  will-change: color, text-shadow;
}

.basin-month-button:hover,
.basin-month-button:focus-visible,
.basin-month-button:active {
  transform: translateX(-50%);
}

.basin-month-button::before,
.basin-month-button::after {
  display: none;
}

.basin-month-button::before {
  right: calc(50% + 34px);
}

.basin-month-button::after {
  left: calc(50% + 34px);
  transform: scaleX(-1);
}

.basin-collapse-hint {
  position: absolute;
  left: 50%;
  top: 33px;
  min-width: 34px;
  height: 18px;
  padding: 0 8px;
  border-radius: 999px;
  background: rgba(14, 165, 233, .16);
  color: rgba(186, 230, 253, .94);
  font-size: 11px;
  line-height: 18px;
  text-align: center;
  letter-spacing: .04em;
  opacity: 0;
  transform: translateX(-50%);
  pointer-events: none;
  white-space: nowrap;
  z-index: 2;
  transition: opacity .16s ease;
}

.basin-month.is-empty .basin-month-label {
  color: rgba(100, 116, 139, .72);
}

.basin-month:not(.is-empty) .basin-month-button:hover .basin-month-label,
.basin-month.is-expanded .basin-month-label {
  color: rgba(255, 255, 255, .98);
  text-shadow: 0 0 18px rgba(129, 140, 248, .45);
}

.basin-month:not(.is-empty) .basin-month-button:hover .basin-collapse-hint,
.basin-month:not(.is-empty) .basin-month-button:focus-visible .basin-collapse-hint,
.basin-month.is-expanded .basin-collapse-hint {
  opacity: 1;
}

.basin-day-scale {
  position: absolute;
  left: 0;
  right: 0;
  width: auto;
  top: var(--ruler-axis-y);
  height: 300px;
  display: block;
  overflow: visible;
  z-index: auto;
  opacity: 0;
  transform: none;
  transform-origin: left top;
  pointer-events: none;
  transition: opacity .28s ease;
}

.basin-month.is-expanded .basin-day-scale {
  opacity: 1;
  transform: none;
  pointer-events: none;
}

.basin-month.is-expanded .basin-day-scale::before {
  content: none;
}

.basin-month.is-expanded::after {
  content: "";
  position: absolute;
  left: calc(var(--month-width) / 2);
  right: 36px;
  top: calc(var(--ruler-axis-y) + 1px);
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(135deg,var(--indigo),#7c3aed);
  box-shadow: 0 0 12px rgba(99, 102, 241, .24);
  pointer-events: none;
  z-index: 11;
}

.basin-day {
  position: absolute;
  left: var(--day-x, 0px);
  top: 0;
  width: 0;
  height: 300px;
  z-index: auto;
  transform: none;
}

.basin-day-tick {
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 34px;
  border-radius: 999px;
  background: rgba(203, 213, 225, .68);
  transform: translateX(-50%);
}

.basin-day-label {
  position: absolute;
  left: 0;
  top: 40px;
  font-size: 14px;
  font-weight: 650;
  line-height: 1;
  color: rgba(226, 232, 240, .82);
  transform: translateX(-50%);
  white-space: nowrap;
}

.basin-day-dot {
  position: absolute;
  left: 0;
  top: -8px;
  z-index: 80;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border: 1px solid rgba(30, 64, 175, .78);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(59, 130, 246, .94), rgba(37, 99, 235, .92));
  box-shadow: 0 0 0 2px rgba(56, 189, 248, .14), 0 0 12px rgba(37, 99, 235, .46);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #e7efff;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .01em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  transform: translateX(-50%);
  cursor: pointer;
  appearance: none;
}

.basin-day-dot.is-month-overlap {
  top: 8px;
}

.basin-day-dot,
.basin-day-note,
.basin-day-more {
  pointer-events: auto;
}

.basin-month-count {
  position: absolute;
  left: calc(var(--month-width) / 2);
  top: calc(var(--ruler-axis-y) - 8px);
  z-index: 60;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border: 1px solid rgba(91, 33, 182, .78);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(79, 70, 229, .94), rgba(124, 58, 237, .92));
  box-shadow: 0 0 0 2px rgba(129, 140, 248, .14), 0 0 12px rgba(124, 58, 237, .44);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #f5efff;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .01em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  transform: translateX(-50%);
  isolation: isolate;
  pointer-events: auto;
  cursor: pointer;
  appearance: none;
}

.basin-month-count--toggle::after {
  content: attr(data-hint);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  min-width: 34px;
  height: 18px;
  padding: 0 8px;
  border-radius: 999px;
  background: rgba(14, 165, 233, .16);
  color: rgba(186, 230, 253, .94);
  font-size: 11px;
  line-height: 18px;
  text-align: center;
  letter-spacing: .04em;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-50%);
  pointer-events: none;
  transition: opacity .16s ease;
}

.basin-month-count--toggle:hover,
.basin-month-count--toggle:focus-visible,
.basin-month-count--toggle:active {
  transform: translateX(-50%);
}

.basin-month-count--toggle:hover::after,
.basin-month-count--toggle:focus-visible::after,
.basin-month.is-expanded .basin-month-count--toggle::after {
  opacity: 1;
}

.basin-day-dot:hover,
.basin-day-dot:focus-visible,
.basin-day-dot:active {
  outline: none;
  transform: translateX(-50%);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, .2), 0 0 16px rgba(59, 130, 246, .68);
}

.basin-day-notes {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 11;
  width: 0;
  height: 0;
  overflow: visible;
  opacity: 0;
  pointer-events: none;
  transition: opacity .16s ease;
}

.basin-day.has-records:hover .basin-day-notes,
.basin-day:focus-within .basin-day-notes {
  opacity: 1;
  pointer-events: auto;
}

.basin-day-note,
.basin-day-more {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 9;
  display: block;
  width: 230px;
  min-height: 54px;
  padding: 10px 12px 10px 14px;
  border: 1px solid rgba(125, 211, 252, .2);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(30, 41, 59, .76));
  box-shadow: 0 14px 34px rgba(0, 0, 0, .24), inset 0 1px 0 rgba(255, 255, 255, .04);
  color: rgba(241, 245, 249, .92);
  text-decoration: none;
  font-size: 12px;
  line-height: 1.58;
  text-shadow: 0 0 18px rgba(15, 23, 42, .86);
  pointer-events: auto;
  transform: translate(var(--note-x, -115px), var(--note-y, 88px));
}

.basin-day-note::before,
.basin-day-more::before {
  content: "";
  position: absolute;
  left: 50%;
  top: var(--leader-top, -62px);
  width: 1px;
  height: var(--leader-height, 62px);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(191, 219, 254, .08), rgba(125, 211, 252, .86));
  box-shadow: 0 0 10px rgba(56, 189, 248, .42);
  transform: translateX(-50%);
  pointer-events: none;
}

.basin-day-note::after,
.basin-day-more::after {
  content: "";
  position: absolute;
  left: 50%;
  top: var(--leader-dot-y, -14px);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(248, 250, 252, .96);
  box-shadow: 0 0 12px rgba(56, 189, 248, .78);
  transform: translateX(-50%);
  pointer-events: none;
}

.basin-day-more {
  min-height: 0;
  padding: 9px 12px;
  color: rgba(186, 230, 253, .94);
  font-weight: 760;
  text-align: center;
}

.basin-day-dot.is-jump-highlight {
  animation: timelineDayPulse 1.2s ease;
}

@keyframes timelineDayPulse {
  0% { box-shadow: 0 0 0 4px rgba(56, 189, 248, .16), 0 0 18px rgba(56, 189, 248, .72); transform: translateX(-50%) scale(1); }
  30% { box-shadow: 0 0 0 7px rgba(56, 189, 248, .3), 0 0 30px rgba(56, 189, 248, .98); transform: translateX(-50%) scale(1.12); }
  100% { box-shadow: 0 0 0 4px rgba(56, 189, 248, .16), 0 0 18px rgba(56, 189, 248, .72); transform: translateX(-50%) scale(1); }
}

.timeline-date-picker-panel {
  width: 300px;
}

.basin-day-note time {
  display: block;
  margin-top: 5px;
  color: rgba(186, 230, 253, .62);
  font-size: 11px;
  text-align: right;
}

.basin-ambient {
  position: absolute;
  left: var(--ambient-left, -80px);
  top: var(--ambient-top, 92px);
  z-index: 6;
  width: 260px;
  display: block;
  color: rgba(241, 245, 249, .86);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.82;
  letter-spacing: .01em;
  text-shadow: 0 0 10px rgba(15, 23, 42, .72);
  opacity: 0;
  pointer-events: none;
  transform: translate(var(--float-drift, 0px), calc((1 - var(--float-alpha, 0)) * 28px)) scale(var(--float-scale, .82));
  transform-origin: center center;
  transition: opacity .5s ease, transform .5s ease;
  white-space: normal;
  overflow-wrap: anywhere;
}

.basin-ambient span {
  color: rgba(186, 230, 253, .58);
  white-space: nowrap;
}

.basin-month.is-near:not(.is-expanded) .basin-ambient {
  opacity: var(--ambient-alpha, 0);
  pointer-events: auto;
}

.basin-month.is-expanded .basin-ambient {
  opacity: 0;
  pointer-events: none;
}

.basin-future-marker {
  position: relative;
  z-index: 2;
  min-width: 128px;
  margin-top: calc(var(--ruler-axis-y) - 86px);
  text-align: left;
  font-size: 44px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: .06em;
  color: rgba(148, 163, 184, .62);
  text-shadow: 0 0 18px rgba(129, 140, 248, .16);
}

.river-scrollbar {
  position: absolute;
  left: 50%;
  bottom: 8px;
  z-index: 12;
  width: min(540px, calc(100% - 180px));
  height: 34px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
}

.river-scrollbar__track {
  position: relative;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: rgba(71, 85, 105, .42);
  box-shadow: inset 0 0 0 1px rgba(226, 232, 240, .08), 0 0 14px rgba(129, 140, 248, .12);
  cursor: pointer;
}

.river-scrollbar__fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  border-radius: inherit;
  background: rgba(203, 213, 225, .62);
  box-shadow: 0 0 12px rgba(129, 140, 248, .18);
}

.river-scrollbar__thumb {
  position: absolute;
  left: 0;
  top: 50%;
  width: 18px;
  height: 18px;
  min-width: 18px;
  min-height: 18px;
  padding: 0;
  border-radius: 50%;
  border: 2px solid rgba(15, 23, 42, .95);
  background: #c7d2fe;
  box-shadow: 0 0 0 4px rgba(129, 140, 248, .1), 0 0 18px rgba(129, 140, 248, .55);
  transform: translate(-50%, -50%);
  transform-origin: center center;
  transition: box-shadow .16s ease, background-color .16s ease;
  cursor: grab;
  appearance: none;
}

.river-scrollbar__thumb:hover,
.river-scrollbar__thumb:focus-visible,
.river-scrollbar__thumb:active {
  outline: none;
  background: #dbeafe;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 5px rgba(129, 140, 248, .14), 0 0 22px rgba(129, 140, 248, .68);
}

.river-scrollbar__thumb:active {
  cursor: grabbing;
}

@keyframes basinStars {
  0%, 100% { opacity: .12; filter: drop-shadow(0 0 2px rgba(191, 219, 254, .12)); }
  42% { opacity: .24; filter: drop-shadow(0 0 5px rgba(191, 219, 254, .2)); }
  68% { opacity: .16; filter: drop-shadow(0 0 3px rgba(191, 219, 254, .16)); }
}

@keyframes basinParticle {
  0% { transform: translateX(-320px); opacity: .06; }
  8% { opacity: .34; }
  26% { opacity: .98; }
  78% { opacity: .56; }
  100% { transform: translateX(1180px); opacity: .08; }
}

@media (max-width: 900px) {
  .time-river-scroll {
    transform: translateY(-36px);
  }
  .timeline-head .timeline-head-copy,
  .timeline-head .timeline-head-copy .eyebrow,
  .timeline-head .timeline-head-copy h2,
  .timeline-head .timeline-head-copy .section-head-desc {
    display: none !important;
  }
  .river-head {
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    row-gap: 0;
  }
  .timeline-head-actions {
    width: 100%;
    justify-content: flex-end;
    padding-top: 0;
  }
  .timeline-date-filter {
    min-width: 88px;
  }
  .timeline-date-filter .date-filter-btn {
    min-width: 132px;
    height: 40px;
    padding: 0 12px;
    border-radius: 999px;
    font-size: 15px;
    line-height: 40px;
  }
  .timeline-date-filter .date-filter-clear-ext {
    display: none !important;
  }
  .river-head .section-head-desc {
    max-width: none;
  }
  .river-head h2 { font-size: 34px; }
  .time-river-shell { --ruler-axis-y: 225px; --month-width: 78px; --month-expanded-width: 884px; }
  .time-river-track { padding-left: 110px; padding-right: 110px; }
  .basin-year-label { left: var(--year-left, calc(110px + var(--month-offset, 0) * var(--month-width))); }
  .basin-year-text { font-size: 56px; }
  .basin-month-button { width: 68px; }
  .basin-month-label { font-size: 16px; }
  .basin-day-note { font-size: 11px; }
  .river-scrollbar { width: calc(100% - 90px); }
  .basin-axis__particles span:nth-child(n + 29) { display: none; }
}

@media (max-width: 560px) {
  .timeline-head-actions { padding-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .basin-axis__particles span:nth-child(n + 13) { display: none; }
  .basin-axis__particles span {
    animation-duration: 22s;
  }
}