:root {
  --bg: #f4efe6;
  --bg-elevated: rgba(255, 252, 247, 0.78);
  --panel: rgba(255, 255, 255, 0.88);
  --panel-strong: #fffdf8;
  --ink: #17202a;
  --muted: #5b6776;
  --line: rgba(134, 100, 73, 0.18);
  --accent: #a33e3f;
  --accent-2: #1f5c7a;
  --accent-3: #3f7a58;
  --hero-glow: rgba(163, 62, 63, 0.18);
  --shadow: 0 22px 60px rgba(23, 32, 42, 0.1);
  --radius: 22px;
  --content: 1240px;
  --plot-bg: rgba(255, 255, 255, 0);
  --plot-grid: rgba(91, 103, 118, 0.14);
  --font-sans: "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
}

body.theme-dark {
  --bg: #0d1319;
  --bg-elevated: rgba(14, 21, 29, 0.84);
  --panel: rgba(20, 29, 39, 0.9);
  --panel-strong: rgba(19, 28, 38, 0.97);
  --ink: #eef3f7;
  --muted: #a2b0bf;
  --line: rgba(168, 192, 214, 0.16);
  --accent: #ff8a7a;
  --accent-2: #7accff;
  --accent-3: #9be3a7;
  --hero-glow: rgba(122, 204, 255, 0.12);
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.42);
  --plot-bg: rgba(0, 0, 0, 0);
  --plot-grid: rgba(162, 176, 191, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at 15% 10%, var(--hero-glow), transparent 24%),
    radial-gradient(circle at 85% 18%, rgba(31, 92, 122, 0.14), transparent 28%),
    radial-gradient(circle at 30% 85%, rgba(63, 122, 88, 0.12), transparent 26%),
    var(--bg);
  transition: background 220ms ease, color 220ms ease;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.site-shell {
  min-height: 100vh;
}

.topbar,
main,
.footer {
  width: min(100%, var(--content));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px 8px;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
}

.brand {
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.topnav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.topnav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.94rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
}

.theme-toggle__track {
  width: 46px;
  height: 26px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  position: relative;
}

.theme-toggle__thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  position: absolute;
  top: 3px;
  left: 3px;
  transition: transform 180ms ease;
}

body.theme-dark .theme-toggle__thumb {
  transform: translateX(20px);
}

main {
  padding: 8px 24px 64px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.85fr);
  gap: 22px;
  padding-top: 18px;
}

.hero--single {
  grid-template-columns: 1fr;
}

.hero__content--full h1 {
  max-width: none;
}

.hero__content,
.hero__panel,
.panel,
.note-card,
.image-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: calc(var(--radius) + 6px);
}

.hero__content {
  padding: 34px;
}

.hero__panel {
  padding: 26px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.82rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
}

h1,
h2 {
  font-family: var(--font-serif);
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 0.98;
  max-width: 12ch;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.02;
  max-width: 16ch;
}

h3 {
  font-size: 1.05rem;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

code {
  font-family: "SFMono-Regular", Consolas, monospace;
  background: rgba(127, 127, 127, 0.12);
  padding: 0.12rem 0.35rem;
  border-radius: 6px;
}

.hero__lede {
  margin-top: 18px;
  max-width: 63ch;
  font-size: 1.08rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.metric-card {
  padding: 18px;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.metric-card__label {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.metric-card__value {
  margin-top: 6px;
  font-size: 1.9rem;
  font-weight: 700;
}

.insight-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.insight-card {
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.insight-card h3 {
  margin-bottom: 8px;
}

.section {
  margin-top: 30px;
}

.section__intro {
  margin-bottom: 18px;
}

.section__intro p:last-child {
  margin-top: 10px;
  max-width: 74ch;
}

.panel {
  padding: 22px;
  margin-top: 16px;
}

.panel--wide {
  padding-bottom: 10px;
}

.panel__header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.panel__header p {
  margin-top: 6px;
}

.two-up,
.card-grid,
.image-grid {
  display: grid;
  gap: 18px;
}

.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.note-card {
  padding: 22px;
}

.note-card h3 {
  margin-bottom: 10px;
}

.control-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.control {
  display: grid;
  gap: 8px;
  min-width: 220px;
  color: var(--muted);
}

.control--grow {
  flex: 1 1 320px;
}

.control span {
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.control select,
.control input[type="range"],
.control input[type="search"] {
  width: 100%;
}

.control select {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--panel-strong);
  color: var(--ink);
}

.control input[type="search"] {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--panel-strong);
  color: var(--ink);
}

.plot {
  min-height: 420px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

thead th {
  text-align: left;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
  padding: 0 0 12px;
}

tbody td {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

tbody tr:last-child td {
  border-bottom: 0;
}

.image-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.download-card {
  display: grid;
  gap: 8px;
  padding: 20px;
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  transition: transform 140ms ease, border-color 140ms ease;
}

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

.download-card strong {
  color: var(--ink);
}

.download-card span {
  color: var(--muted);
  line-height: 1.5;
}

.table-link {
  color: var(--accent-2);
  text-decoration: none;
  font-weight: 600;
}

.image-card {
  overflow: hidden;
}

.image-card img {
  width: 100%;
  aspect-ratio: 1.18 / 1;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.image-card figcaption {
  padding: 14px 16px;
  color: var(--muted);
}

.footer {
  padding: 0 24px 42px;
}

.footer p {
  color: var(--muted);
  font-size: 0.94rem;
}

@media (max-width: 1040px) {
  .hero,
  .two-up {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .topbar {
    flex-wrap: wrap;
    padding: 18px 16px 8px;
  }

  main,
  .footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero__content,
  .hero__panel,
  .panel,
  .note-card {
    padding: 18px;
  }

  .plot {
    min-height: 360px;
  }
}