:root {
  --bg: #101820;
  --card: #1b2430;
  --ink: #e7eef6;
  --muted: #9aabbd;
  --line: #314052;
  --accent: #8eb6f5;
  --accent-ink: #0e1622;
  --accent-soft: #24344c;
  --warn: #f0a07a;
  --good: #5dce96;
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #eef2f6;
  --card: #ffffff;
  --ink: #172033;
  --muted: #5b6b7c;
  --line: #d5dee8;
  --accent: #1f4b99;
  --accent-ink: #ffffff;
  --accent-soft: #e7eef8;
  --warn: #9a3412;
  --good: #0f6b4c;
  color-scheme: light;
}

html[data-theme="light"] .other-word { color: #008300; }
html[data-theme="light"] .brand-mark span:last-child { background: #008300; }

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.4;
}

button, select { font: inherit; color: inherit; }

.site-header, main {
  width: min(1080px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header { padding: 20px 0 8px; }

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  margin-bottom: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand-mark { display: inline-flex; gap: 3px; }

.brand-mark span {
  width: 8px;
  height: 18px;
  border-radius: 3px;
}

.brand-mark span:first-child { background: #e87ba4; }
.brand-mark span:last-child { background: #4cbe62; }

.nav-links { display: flex; flex-wrap: wrap; gap: 2px 16px; }

.nav-links a {
  color: var(--ink);
  text-decoration: none;
  padding: 8px 0;
  font-size: 0.92rem;
}

.nav-links a:hover { color: var(--accent); }

.nav-end {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
}

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  min-height: 36px;
  padding: 6px 14px;
  cursor: pointer;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1, h2, h3 { font-weight: 650; letter-spacing: 0; }

h1 {
  margin: 10px 0 0;
  max-width: 16em;
  font-size: clamp(1.8rem, 4.2vw, 2.6rem);
  line-height: 1.12;
}

.wind-word { color: #e87ba4; }
.other-word { color: #4cbe62; }

.lede {
  margin: 14px 0 0;
  max-width: 68ch;
  font-size: 1.05rem;
  line-height: 1.5;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }

.hero-button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  font-weight: 650;
}

.hero-button-secondary {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
}

.site-proposal {
  width: min(1080px, calc(100% - 32px));
  margin: 12px auto 32px;
  scroll-margin-top: 16px;
}

.site-proposal h2 { max-width: 24em; }

.site-proposal p { margin: 0; max-width: 72ch; line-height: 1.5; }

#mix, #months, #findings, #eco { scroll-margin-top: 16px; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: end;
  margin: 16px 0;
}

.control { display: flex; flex-direction: column; gap: 4px; min-width: 9rem; }

.control-label { color: var(--muted); font-size: 0.8rem; }

select {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  min-height: 40px;
}

select:focus-visible, button:focus-visible, .pie-slice:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.text-button {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 6px;
  min-height: 40px;
  padding: 8px 12px;
  cursor: pointer;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
}

.stat-value {
  display: block;
  font-size: 1.45rem;
  font-weight: 650;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}

.stat-label { display: block; margin-top: 4px; color: var(--muted); font-size: 0.82rem; }

.stat.warn .stat-value { color: var(--warn); }
.stat.good .stat-value { color: var(--good); }

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(240px, 0.8fr);
  gap: 12px;
  align-items: start;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.panel h2 { margin: 0 0 12px; font-size: 1.1rem; }

.pie-wrap {
  display: grid;
  grid-template-columns: minmax(180px, 260px) minmax(0, 1fr);
  gap: 8px 16px;
  align-items: center;
}

.pie { width: 100%; height: auto; display: block; }

.pie path { stroke: var(--card); stroke-width: 2; }

.pie text {
  font-size: 8px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

.pie-slice { cursor: pointer; }

.pie-slice.dim { opacity: 0.35; }

.pie-legend { display: flex; flex-direction: column; }

.pie-key {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  width: 100%;
  border: 0;
  background: transparent;
  border-radius: 6px;
  padding: 6px 8px;
  text-align: left;
  cursor: pointer;
}

.pie-key[aria-pressed="true"] { background: var(--accent-soft); }

.pie-key-value { font-variant-numeric: tabular-nums; color: var(--muted); }

.swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  display: inline-block;
}

.detail h3 { margin: 0 0 6px; font-size: 1.25rem; }

.tag {
  display: inline-block;
  margin: 0 0 8px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 650;
}

.detail p { margin: 0 0 10px; }

.detail .share-line {
  font-size: 1.05rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.year-pills { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }

.year-pill {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 6px;
  padding: 8px;
  text-align: left;
  cursor: pointer;
}

.year-pill strong { display: block; font-variant-numeric: tabular-nums; }
.year-pill span { color: var(--muted); font-size: 0.75rem; }
.year-pill[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); }

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
}

.section-head h2 { margin: 0; }

.legend { display: flex; flex-wrap: wrap; gap: 8px; }

.legend-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
}

.legend-button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.legend-button[aria-pressed="true"] .swatch { box-shadow: 0 0 0 1px var(--accent-ink); }

.chart-block { margin-top: 16px; }

.chart-block h3 { margin: 0 0 4px; font-size: 1.05rem; }

.chart-note { margin: 0; color: var(--muted); font-size: 0.88rem; max-width: 62ch; }

.chart-controls { display: flex; flex-wrap: wrap; gap: 10px; }

.legend-key { display: inline-flex; align-items: center; gap: 6px; font-size: 0.88rem; }

.line-chart { width: 100%; height: auto; display: block; margin-top: 8px; }

.line-chart .grid line { stroke: var(--line); }

.line-chart .grid text, .line-chart .month-label {
  fill: var(--muted);
  font-size: 12px;
}

.line-chart .baseline {
  stroke: var(--muted);
  stroke-dasharray: 5 5;
  stroke-width: 1.5;
}

.eco-chart { display: flex; flex-direction: column; gap: 10px; margin: 12px 0; }

.eco-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.eco-year { font-weight: 650; }

.eco-bar {
  display: flex;
  height: 46px;
  gap: 2px;
  border-radius: 6px;
  overflow: hidden;
}

.eco-part, .non-part {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 650;
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
}

.eco-part { background: #1baf7a; color: #083322; }
.non-part { background: #4b5563; color: #ffffff; }

.eco-swatch { background: #1baf7a; }
.non-swatch { background: #4b5563; }

.findings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.finding {
  display: block;
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  padding: 12px 14px;
  cursor: pointer;
}

.finding strong { display: block; margin-bottom: 4px; font-size: 1rem; }

.finding p { margin: 0; color: var(--muted); }

.finding[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); }

.stack { margin-top: 12px; }

.month-stack {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  height: 280px;
}

.month-axis { position: relative; }

.month-axis span {
  position: absolute;
  right: 6px;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
}

.month-plot {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 100%;
  border-bottom: 1px solid var(--line);
}

.month-col {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column-reverse;
  border-radius: 2px 2px 0 0;
  overflow: hidden;
}

.month-labels {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  margin-top: 4px;
}

.month-label-row { display: flex; gap: 2px; }

.month-label-row span {
  flex: 1 1 0;
  min-width: 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.72rem;
}

.stack-legend { margin-top: 12px; }

@media (max-width: 860px) {
  .stats, .findings { grid-template-columns: 1fr 1fr; }
  .layout { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  h1 { font-size: 1.4rem; }
  .stats, .findings { grid-template-columns: 1fr; }
  .pie-wrap { grid-template-columns: 1fr; }
  .site-header, main, .site-proposal { width: min(1080px, calc(100% - 20px)); }
  .eco-part, .non-part { font-size: 0.75rem; }
}