:root {
  color-scheme: dark;
  --pdw-bg: #0f172a;
  --pdw-bg-2: #10231f;
  --pdw-panel: rgba(17, 24, 39, 0.86);
  --pdw-panel-strong: rgba(15, 23, 42, 0.94);
  --pdw-text: #f8fafc;
  --pdw-muted: #cbd5e1;
  --pdw-subtle: #94a3b8;
  --pdw-forest: #1f5f4a;
  --pdw-forest-bright: #2f8a65;
  --pdw-river: #38bdf8;
  --pdw-river-deep: #256d85;
  --pdw-sand: #d7c49a;
  --pdw-sand-deep: #9d875f;
  --pdw-line: rgba(215, 196, 154, 0.22);
  --pdw-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --pdw-radius: 24px;
  --pdw-radius-sm: 14px;
  --pdw-max: 1160px;
}

html[data-theme="light"] {
  color-scheme: light;
  --pdw-bg: #f6f1e6;
  --pdw-bg-2: #e6f0eb;
  --pdw-panel: rgba(255, 252, 244, 0.9);
  --pdw-panel-strong: rgba(255, 252, 244, 0.96);
  --pdw-text: #17211e;
  --pdw-muted: #42524c;
  --pdw-subtle: #64746d;
  --pdw-forest: #1f5f4a;
  --pdw-forest-bright: #2f8a65;
  --pdw-river: #256d85;
  --pdw-river-deep: #164d62;
  --pdw-sand: #9d875f;
  --pdw-sand-deep: #6f5d3d;
  --pdw-line: rgba(31, 95, 74, 0.22);
  --pdw-shadow: 0 24px 80px rgba(31, 55, 49, 0.16);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 28rem),
              radial-gradient(circle at 82% 14%, rgba(47, 138, 101, 0.28), transparent 24rem),
              linear-gradient(145deg, var(--pdw-bg), var(--pdw-bg-2));
  color: var(--pdw-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

.site-background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(215, 196, 154, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(215, 196, 154, 0.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), transparent 80%);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  width: min(var(--pdw-max), calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0;
  backdrop-filter: blur(16px);
}

.brand-mark,
.nav-links a,
.back-link { color: var(--pdw-text); text-decoration: none; }
.brand-mark { display: inline-flex; align-items: center; gap: 0.8rem; }
.brand-mark small { display: block; color: var(--pdw-subtle); font-size: 0.72rem; letter-spacing: 0.04em; }

.brand-triangle,
.triangle-sigil {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 14px solid transparent;
  border-right: 14px solid transparent;
  border-bottom: 26px solid var(--pdw-sand);
  filter: drop-shadow(0 0 16px rgba(56, 189, 248, 0.22));
}

.nav-links { display: flex; align-items: center; gap: 1rem; font-size: 0.94rem; }
.nav-links a { color: var(--pdw-muted); }
.nav-links a:hover, .back-link:hover { color: var(--pdw-river); }

.theme-toggle,
.button {
  border: 1px solid var(--pdw-line);
  border-radius: 999px;
  color: var(--pdw-text);
  background: var(--pdw-panel);
  cursor: pointer;
  font-weight: 700;
}

.theme-toggle { padding: 0.55rem 0.85rem; }
.section-wrap, .dash-shell { width: min(var(--pdw-max), calc(100% - 2rem)); margin: 0 auto; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 2rem;
  align-items: center;
  padding: 5rem 0 3rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--pdw-sand);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 13ch; margin-bottom: 1.1rem; font-size: clamp(3rem, 8vw, 6.9rem); line-height: 0.93; letter-spacing: -0.08em; }
h2 { font-size: clamp(1.55rem, 3vw, 2.3rem); line-height: 1.05; letter-spacing: -0.045em; }
.hero-lede, .page-header p, .split-section p, .callout p, .dash-header p { color: var(--pdw-muted); font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 1.8rem; }
.button { display: inline-flex; align-items: center; justify-content: center; padding: 0.82rem 1.15rem; text-decoration: none; }
.button.primary { border-color: rgba(56, 189, 248, 0.35); background: linear-gradient(135deg, var(--pdw-forest), var(--pdw-river-deep)); }
.button.secondary { background: rgba(215, 196, 154, 0.08); }

.hero-panel, .info-card, .chart-card, .callout, .dash-card, .mini-card, .compass-card {
  border: 1px solid var(--pdw-line);
  border-radius: var(--pdw-radius);
  background: var(--pdw-panel);
  box-shadow: var(--pdw-shadow);
}

.hero-panel { padding: 1rem; }
.compass-card {
  min-height: 420px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1.2rem;
  padding: 2rem;
  background:
    radial-gradient(circle at 50% 40%, rgba(56, 189, 248, 0.16), transparent 10rem),
    linear-gradient(155deg, rgba(31, 95, 74, 0.35), rgba(157, 135, 95, 0.10));
}
.compass-kicker { color: var(--pdw-sand); font-size: 0.72rem; font-weight: 900; letter-spacing: 0.18em; text-transform: uppercase; }
.triangle-sigil { border-left-width: 80px; border-right-width: 80px; border-bottom-width: 140px; }
.compass-card ul, .clean-list { margin: 0; padding: 0; list-style: none; }
.compass-card li, .clean-list li { padding: 0.35rem 0; color: var(--pdw-muted); }
.grid { display: grid; gap: 1rem; }
.three-up { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.info-card, .callout, .mini-card { padding: 1.4rem; }
.info-card p:last-child, .callout p:last-child, .mini-card p:last-child { margin-bottom: 0; }
.info-card.tall { min-height: 310px; }
.split-section { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr); gap: 1.4rem; align-items: center; padding: 3rem 0; }
.chart-card { overflow: hidden; padding: 0.5rem; }
.module-cloud { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.4rem; }
.module-cloud span { border: 1px solid var(--pdw-line); border-radius: 999px; padding: 0.5rem 0.72rem; color: var(--pdw-muted); background: rgba(255, 255, 255, 0.04); font-size: 0.9rem; }
.page-header { padding: 4rem 0 2rem; }
.page-header h1 { max-width: 15ch; font-size: clamp(2.8rem, 6vw, 5.7rem); }
.callout { margin-top: 1.5rem; margin-bottom: 3rem; background: linear-gradient(135deg, rgba(31, 95, 74, 0.28), rgba(37, 109, 133, 0.18)); }
.footer { display: flex; justify-content: center; flex-wrap: wrap; gap: 1rem; padding: 2.2rem 1rem; color: var(--pdw-subtle); font-size: 0.85rem; }
.dash-shell { padding: 4rem 0; }
.dash-header { margin-bottom: 1.4rem; }
.dash-header h1 { max-width: 14ch; font-size: clamp(2.7rem, 6vw, 5.4rem); }
.dash-card { padding: 0.5rem; }
.dash-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1rem; }

@media (max-width: 860px) {
  .topbar, .nav-links { align-items: flex-start; }
  .topbar { position: static; flex-direction: column; }
  .nav-links { flex-wrap: wrap; }
  .hero, .split-section, .three-up, .dash-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 2rem; }
  .triangle-sigil { border-left-width: 56px; border-right-width: 56px; border-bottom-width: 98px; }
}