:root {
  /* DESIGN.md colors */
  --praxia-primary: #1f5a3a;
  --praxia-on-primary: #f7f5ef;
  --praxia-primary-hover: #266d46;
  --praxia-primary-subtle: #e7efe9;
  --praxia-ink: #14110e;
  --praxia-ink-muted: #3a352e;
  --praxia-ink-subtle: #6f6a60;
  --praxia-canvas: #f7f5ef;
  --praxia-surface-1: #ffffff;
  --praxia-surface-2: #fbf9f3;
  --praxia-surface-3: #f1ede4;
  --praxia-hairline: #e3ddd0;
  --praxia-hairline-strong: #cfc7b4;
  --praxia-warning: #a85a16;
  --praxia-warning-bg: #fbeede;
  --praxia-danger: #a31e1e;
  --praxia-danger-bg: #f6e2e2;
  --praxia-info: #1c4f74;
  --praxia-info-bg: #e4eef5;
  --praxia-radius-md: 8px;
  --praxia-radius-lg: 12px;
  --praxia-radius-xl: 16px;
  --praxia-font-display: "GT Sectra", "Source Serif Pro", Georgia, serif;
  --praxia-font-body: "Söhne", Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --praxia-font-mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
  --praxia-display-xl-size: 56px;
  --praxia-display-lg-size: 40px;
  --praxia-display-md-size: 28px;
  --praxia-subhead-size: 18px;
  --praxia-body-lg-size: 17px;
  --praxia-button-size: 14px;
  --praxia-caption-size: 12px;
  --praxia-eyebrow-size: 11px;
  --praxia-shadow-raised-1: 0 1px 2px rgba(20, 17, 14, 0.04), 0 1px 3px rgba(20, 17, 14, 0.06);
  --praxia-shadow-raised-2: 0 4px 12px rgba(20, 17, 14, 0.08), 0 1px 2px rgba(20, 17, 14, 0.05);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--praxia-canvas);
  color: var(--praxia-ink);
  font-family: var(--praxia-font-body);
  font-size: 16px;
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 32px;
  border-bottom: 1px solid var(--praxia-hairline);
  background: color-mix(in srgb, var(--praxia-canvas) 92%, var(--praxia-surface-1));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  text-decoration: none;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border: 2px solid var(--praxia-primary);
  border-radius: 50%;
  box-shadow: inset 0 0 0 5px var(--praxia-primary-subtle);
}

.nav {
  display: flex;
  gap: 22px;
  color: var(--praxia-ink-muted);
  font-size: 14px;
}

.nav a {
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  gap: 56px;
  align-items: center;
  min-height: calc(100dvh - 64px);
  padding: 76px 8vw 64px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--praxia-primary);
  font-size: var(--praxia-eyebrow-size);
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: var(--praxia-font-display);
  font-weight: 500;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: var(--praxia-display-xl-size);
  line-height: 1.1;
}

h2 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: var(--praxia-display-lg-size);
  line-height: 1.15;
}

h3 {
  margin-bottom: 8px;
  font-size: var(--praxia-subhead-size);
  line-height: 1.3;
}

.lead {
  max-width: 680px;
  color: var(--praxia-ink-muted);
  font-size: var(--praxia-body-lg-size);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  min-height: 44px;
  padding: 12px 18px;
  border: 1px solid var(--praxia-hairline-strong);
  border-radius: var(--praxia-radius-md);
  cursor: pointer;
  font: inherit;
  font-size: var(--praxia-button-size);
  font-weight: 600;
  text-decoration: none;
}

.button-primary {
  border-color: var(--praxia-primary);
  background: var(--praxia-primary);
  color: var(--praxia-on-primary);
}

.button-primary:hover {
  background: var(--praxia-primary-hover);
}

.button-secondary {
  background: var(--praxia-surface-1);
  color: var(--praxia-ink);
}

.notice,
#payment-state {
  margin-top: 16px;
  color: var(--praxia-ink-subtle);
  font-size: var(--praxia-button-size);
}

.product-shot {
  overflow: hidden;
  border: 1px solid var(--praxia-hairline-strong);
  border-radius: var(--praxia-radius-xl);
  background: var(--praxia-surface-1);
  box-shadow: var(--praxia-shadow-raised-2);
}

.window-bar {
  display: flex;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--praxia-hairline);
  background: var(--praxia-surface-2);
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--praxia-hairline-strong);
}

.app-preview {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) 170px;
  min-height: 430px;
}

.app-preview aside,
.app-preview section {
  padding: 20px;
}

.app-preview aside {
  background: var(--praxia-surface-2);
  color: var(--praxia-ink-muted);
  font-size: 13px;
}

.app-preview section {
  border-right: 1px solid var(--praxia-hairline);
  border-left: 1px solid var(--praxia-hairline);
}

.right-panel {
  background: var(--praxia-primary-subtle) !important;
  color: var(--praxia-primary) !important;
}

.preview-heading {
  margin-bottom: 22px;
  font-family: var(--praxia-font-display);
  font-size: var(--praxia-display-md-size);
}

.preview-line {
  width: 72%;
  height: 12px;
  margin: 14px 0;
  border-radius: 999px;
  background: var(--praxia-surface-3);
}

.preview-line.wide {
  width: 94%;
}

.preview-line.short {
  width: 48%;
}

.citation {
  display: inline-flex;
  margin: 18px 0;
  padding: 8px 10px;
  border-radius: var(--praxia-radius-md);
  background: var(--praxia-primary-subtle);
  color: var(--praxia-primary);
  font-family: var(--praxia-font-mono);
  font-size: var(--praxia-caption-size);
}

.section-band,
.split-section,
.pricing {
  padding: 84px 8vw;
  border-top: 1px solid var(--praxia-hairline);
}

.section-band {
  background: var(--praxia-surface-2);
}

.section-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.feature-grid article,
.price-panel,
.downloads a,
.downloads p,
.metrics div {
  border: 1px solid var(--praxia-hairline);
  border-radius: var(--praxia-radius-md);
  background: var(--praxia-surface-1);
  box-shadow: var(--praxia-shadow-raised-1);
}

.feature-grid article {
  padding: 22px;
}

.feature-grid p,
.split-section p,
.pricing p {
  color: var(--praxia-ink-muted);
}

.split-section,
.pricing {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: 48px;
  align-items: start;
}

.metrics {
  display: grid;
  gap: 12px;
  margin: 0;
}

.metrics div {
  padding: 18px;
}

.metrics dt {
  font-size: var(--praxia-display-md-size);
  font-weight: 700;
}

.metrics dd {
  margin: 0;
  color: var(--praxia-ink-subtle);
}

.price-panel {
  padding: 24px;
}

.price-panel strong {
  display: block;
  margin: 8px 0 18px;
  font-family: var(--praxia-font-display);
  font-size: var(--praxia-display-lg-size);
  font-weight: 500;
}

.downloads {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.downloads a,
.downloads p {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  text-decoration: none;
}

.downloads a:hover {
  border-color: var(--praxia-primary);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 8vw;
  border-top: 1px solid var(--praxia-hairline);
  color: var(--praxia-ink-subtle);
  font-size: var(--praxia-button-size);
}

.simple-page {
  display: grid;
  align-content: center;
  min-height: 100dvh;
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    padding: 18px 22px;
  }

  .nav {
    display: none;
  }

  .hero,
  .split-section,
  .pricing {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding: 54px 24px;
  }

  h1 {
    font-size: var(--praxia-display-lg-size);
  }

  h2 {
    font-size: var(--praxia-display-md-size);
  }

  .app-preview {
    grid-template-columns: 1fr;
  }

  .app-preview section {
    border: 0;
    border-top: 1px solid var(--praxia-hairline);
    border-bottom: 1px solid var(--praxia-hairline);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .section-band,
  .split-section,
  .pricing {
    padding: 58px 24px;
  }

  .site-footer {
    flex-direction: column;
    padding: 26px 24px;
  }
}