:root,
body[data-theme="soothing"] {
  --ink: #17211f;
  --muted: #5e716b;
  --paper: #f4f8f5;
  --panel: #ffffff;
  --line: #d5dfda;
  --accent: #137c6f;
  --accent-strong: #0c5f54;
  --signal: #f0b84a;
  --button-ink: #ffffff;
  --field-a: #137c6f;
  --field-b: #17211f;
  --field-grid: rgba(246, 255, 248, 0.12);
  --field-ring: rgba(240, 184, 74, 0.24);
  --page-bg:
    linear-gradient(120deg, rgba(19, 124, 111, 0.09), transparent 34%),
    linear-gradient(180deg, #edf5f1 0%, #fbf5eb 100%);
  --shadow: 0 22px 70px rgba(23, 33, 31, 0.13);
}

body[data-theme="high-contrast"] {
  --ink: #ffffff;
  --muted: #f0f0f0;
  --paper: #000000;
  --panel: #080808;
  --line: #ffffff;
  --accent: #ffd400;
  --accent-strong: #ffe873;
  --signal: #00e5ff;
  --button-ink: #000000;
  --field-a: #000000;
  --field-b: #121212;
  --field-grid: rgba(255, 255, 255, 0.28);
  --field-ring: rgba(255, 212, 0, 0.38);
  --page-bg: #000000;
  --shadow: 0 22px 70px rgba(255, 212, 0, 0.13);
}

body[data-theme="color-blind"] {
  --ink: #111820;
  --muted: #52616f;
  --paper: #f5f9fc;
  --panel: #ffffff;
  --line: #c7d7e4;
  --accent: #0072b2;
  --accent-strong: #005c92;
  --signal: #e69f00;
  --button-ink: #ffffff;
  --field-a: #0072b2;
  --field-b: #172635;
  --field-grid: rgba(246, 249, 251, 0.16);
  --field-ring: rgba(230, 159, 0, 0.26);
  --page-bg:
    linear-gradient(120deg, rgba(0, 114, 178, 0.09), transparent 36%),
    linear-gradient(180deg, #edf6fb 0%, #fff8ea 100%);
  --shadow: 0 22px 70px rgba(17, 24, 32, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--page-bg);
  font-family: "Segoe UI", Arial, sans-serif;
}

a,
button,
select {
  font: inherit;
}

a {
  color: inherit;
}

.hero,
main,
footer {
  width: min(1380px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 0;
}

.brand {
  font-weight: 900;
  text-decoration: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

select,
.small-button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  padding: 9px 12px;
}

.small-button,
.primary,
.secondary {
  text-decoration: none;
  font-weight: 900;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.78fr) minmax(0, 1.22fr);
  gap: 22px;
  align-items: stretch;
  padding: 18px 0 32px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 560px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(3.2rem, 8vw, 7.8rem);
  line-height: 0.9;
}

.lede {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.18rem;
  line-height: 1.55;
}

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

.primary,
.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  border-radius: 8px;
  padding: 0 18px;
}

.primary {
  background: var(--accent);
  color: var(--button-ink);
}

.secondary {
  border: 1px solid var(--line);
  background: var(--panel);
}

.tracker-demo {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
  border-radius: 8px;
  background: var(--field-b);
  box-shadow: var(--shadow);
}

#trackerCanvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 560px;
}

.demo-label {
  position: absolute;
  left: 18px;
  bottom: 18px;
  display: grid;
  gap: 3px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(10, 18, 17, 0.78);
  color: #f8fffb;
}

.demo-label span {
  color: rgba(248, 255, 251, 0.74);
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
}

.section {
  padding: 42px 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 18px;
}

h2 {
  max-width: 780px;
  font-size: clamp(2rem, 4vw, 4.7rem);
  line-height: 0.96;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

article,
.steps,
.compact {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 90%, transparent);
  box-shadow: 0 16px 42px rgba(23, 33, 31, 0.08);
}

article {
  min-height: 230px;
  padding: 18px;
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 34px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 15%, var(--panel));
  color: var(--accent-strong);
  font-weight: 900;
}

article p,
.split p,
.compact p,
footer {
  color: var(--muted);
  line-height: 1.55;
}

.split {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: stretch;
}

.steps,
.compact {
  padding: 20px;
}

pre {
  overflow: auto;
  margin: 0 0 16px;
  padding: 16px;
  border-radius: 8px;
  background: #101a18;
  color: #dff6ee;
  font: 0.94rem/1.55 Consolas, "Cascadia Mono", monospace;
}

.compact {
  max-width: none;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 34px 0;
  font-weight: 800;
}

footer a {
  color: var(--accent-strong);
}

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .tracker-demo,
  #trackerCanvas {
    min-height: 430px;
  }
}

@media (max-width: 620px) {
  .hero,
  main,
  footer {
    width: min(100% - 24px, 1380px);
  }

  .nav,
  .nav-actions,
  footer {
    align-items: stretch;
    flex-direction: column;
  }

  h1 {
    font-size: 3rem;
  }

  .hero-copy,
  .tracker-demo,
  #trackerCanvas {
    min-height: 360px;
  }
}