:root {
  --color-canvas: #FFFFFF;
  --color-surface-soft: #F8FAFC;
  --color-surface-muted: #F1F5F9;
  --color-ink-strong: #0A192F;
  --color-ink-muted: #1E293B;
  --color-ocean-primary: #0284C7;
  --color-ocean-deep: #0D9488;
  --color-sky-wash: #E0F2FE;
  --color-sea-glass: #ECFDF5;
  --color-signal: #F97316;
  --color-border: #E2E8F0;
  --color-divider: #F1F5F9;
  --color-footer-text-muted: #94A3B8;
  --color-white: #FFFFFF;

  --font-heading: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --text-display-size: 3.5rem;
  --text-display-line-height: 1.05;
  --text-display-tracking: -0.03em;
  --text-display-weight: 700;

  --text-h1-size: 2.5rem;
  --text-h1-line-height: 1.1;
  --text-h1-tracking: -0.02em;
  --text-h1-weight: 700;

  --text-h2-size: 1.75rem;
  --text-h2-line-height: 1.2;
  --text-h2-tracking: -0.015em;
  --text-h2-weight: 600;

  --text-h3-size: 1.25rem;
  --text-h3-line-height: 1.3;
  --text-h3-tracking: -0.01em;
  --text-h3-weight: 600;

  --text-h4-size: 1.0625rem;
  --text-h4-line-height: 1.4;
  --text-h4-tracking: 0;
  --text-h4-weight: 600;

  --text-body-lg-size: 1.125rem;
  --text-body-lg-line-height: 1.65;
  --text-body-lg-tracking: 0;
  --text-body-lg-weight: 400;

  --text-body-size: 1rem;
  --text-body-line-height: 1.65;
  --text-body-tracking: 0;
  --text-body-weight: 400;

  --text-body-sm-size: 0.875rem;
  --text-body-sm-line-height: 1.55;
  --text-body-sm-tracking: 0;
  --text-body-sm-weight: 400;

  --text-caption-size: 0.75rem;
  --text-caption-line-height: 1.5;
  --text-caption-tracking: 0.02em;
  --text-caption-weight: 500;

  --text-overline-size: 0.6875rem;
  --text-overline-line-height: 1.4;
  --text-overline-tracking: 0.08em;
  --text-overline-weight: 600;
  --text-overline-transform: uppercase;

  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  --container-max-width: 1200px;
  --container-padding-mobile: 24px;
  --container-padding-desktop: 48px;
  --container-wide-max-width: 1320px;

  --radius-0: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sticky-header: 0 1px 2px rgba(10, 25, 47, 0.06);
  --focus-ring: 2px solid var(--color-ocean-primary);
  --focus-ring-offset: 2px;

  --transition-fast: 150ms ease-out;
  --transition-medium: 200ms ease-out;

  --section-spacing-mobile: 64px;
  --section-spacing-desktop: 96px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-canvas);
  color: var(--color-ink-strong);
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  font-weight: var(--text-body-weight);
  line-height: var(--text-body-line-height);
  letter-spacing: var(--text-body-tracking);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  text-align: inherit;
}

a {
  color: var(--color-ocean-primary);
  text-decoration: none;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover {
  color: #0369A1;
  text-decoration: underline;
  text-decoration-color: #0369A1;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-ink-strong);
  margin-block-end: var(--space-4);
}

.display {
  font-size: var(--text-display-size);
  line-height: var(--text-display-line-height);
  letter-spacing: var(--text-display-tracking);
  font-weight: var(--text-display-weight);
  margin-block-end: var(--space-5);
}

h1 {
  font-size: var(--text-h1-size);
  line-height: var(--text-h1-line-height);
  letter-spacing: var(--text-h1-tracking);
  font-weight: var(--text-h1-weight);
  margin-block-end: var(--space-5);
}

h2 {
  font-size: var(--text-h2-size);
  line-height: var(--text-h2-line-height);
  letter-spacing: var(--text-h2-tracking);
  font-weight: var(--text-h2-weight);
  margin-block-end: var(--space-4);
}

h3 {
  font-size: var(--text-h3-size);
  line-height: var(--text-h3-line-height);
  letter-spacing: var(--text-h3-tracking);
  font-weight: var(--text-h3-weight);
  margin-block-end: var(--space-3);
}

h4 {
  font-size: var(--text-h4-size);
  line-height: var(--text-h4-line-height);
  letter-spacing: var(--text-h4-tracking);
  font-weight: var(--text-h4-weight);
  margin-block-end: var(--space-3);
}

p {
  margin-block-end: var(--space-4);
}

.overline {
  font-size: var(--text-overline-size);
  line-height: var(--text-overline-line-height);
  letter-spacing: var(--text-overline-tracking);
  font-weight: var(--text-overline-weight);
  text-transform: var(--text-overline-transform);
  color: var(--color-ink-muted);
  margin-block-end: var(--space-2);
  display: block;
}

.body-lg {
  font-size: var(--text-body-lg-size);
  line-height: var(--text-body-lg-line-height);
  letter-spacing: var(--text-body-lg-tracking);
  font-weight: var(--text-body-lg-weight);
}

.body-sm {
  font-size: var(--text-body-sm-size);
  line-height: var(--text-body-sm-line-height);
  letter-spacing: var(--text-body-sm-tracking);
  font-weight: var(--text-body-sm-weight);
}

.caption {
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  letter-spacing: var(--text-caption-tracking);
  font-weight: var(--text-caption-weight);
  color: var(--color-ink-muted);
}

ul,
ol {
  margin-block-end: var(--space-4);
  padding-inline-start: var(--space-5);
}

ul ul,
ol ol,
ul ol,
ol ul {
  margin-block-end: 0;
}

blockquote {
  margin-block-end: var(--space-4);
  padding-inline-start: var(--space-5);
  border-inline-start: 2px solid var(--color-ocean-deep);
  color: var(--color-ink-muted);
}

blockquote p:last-child {
  margin-block-end: 0;
}

figure {
  margin-block-end: var(--space-4);
}

figcaption {
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  letter-spacing: var(--text-caption-tracking);
  font-weight: var(--text-caption-weight);
  color: var(--color-ink-muted);
  margin-block-start: var(--space-2);
}

hr {
  border: none;
  border-block-start: 1px solid var(--color-border);
  margin-block: var(--space-6);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  margin-block-end: var(--space-5);
}

th,
td {
  border: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-4);
  text-align: start;
  vertical-align: top;
}

th {
  background-color: var(--color-surface-soft);
  font-weight: 600;
  color: var(--color-ink-strong);
}

td {
  color: var(--color-ink-muted);
}

form {
  margin-block-end: var(--space-5);
}

label {
  display: block;
  font-weight: 500;
  color: var(--color-ink-strong);
  margin-block-end: var(--space-2);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-canvas);
  color: var(--color-ink-strong);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-ocean-primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.2);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

select {
  appearance: auto;
}

fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  margin-block-end: var(--space-4);
}

legend {
  font-weight: 600;
  padding-inline: var(--space-2);
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding-mobile);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding-mobile);
}

.surface-soft {
  background-color: var(--color-surface-soft);
}

.surface-muted {
  background-color: var(--color-surface-muted);
}

.sky-wash {
  background-color: var(--color-sky-wash);
}

.sea-glass {
  background-color: var(--color-sea-glass);
}

.card {
  background-color: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.card > :last-child {
  margin-block-end: 0;
}

.callout {
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.callout > :last-child {
  margin-block-end: 0;
}

.callout-sky {
  background-color: var(--color-sky-wash);
}

.callout-sea {
  background-color: var(--color-sea-glass);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-5);
  font-weight: 600;
  font-size: var(--text-body-size);
  line-height: 1.4;
  letter-spacing: 0;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  min-height: 44px;
  cursor: pointer;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-ocean-primary);
  color: var(--color-white);
  border: 1px solid var(--color-ocean-primary);
}

.btn-primary:hover {
  background-color: #0369A1;
  border-color: #0369A1;
  color: var(--color-white);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-ocean-primary);
  border: 1px solid var(--color-ocean-primary);
}

.btn-secondary:hover {
  background-color: rgba(2, 132, 199, 0.06);
  color: #0369A1;
  border-color: #0369A1;
}

.tag {
  display: inline-block;
  background-color: var(--color-surface-muted);
  color: var(--color-ink-muted);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  letter-spacing: var(--text-caption-tracking);
  font-weight: var(--text-caption-weight);
  text-transform: uppercase;
}

.flex {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.flex > * {
  min-width: 0;
}

.flex-nowrap {
  flex-wrap: nowrap;
}

.flex-col {
  flex-direction: column;
}

.flex-center {
  align-items: center;
  justify-content: center;
}

.flex-between {
  align-items: center;
  justify-content: space-between;
}

.flex-start {
  align-items: flex-start;
}

.flex-end {
  align-items: flex-end;
}

.flex-1 {
  flex: 1;
  min-width: 0;
}

.flex-auto {
  flex: 0 0 auto;
}

.grid {
  display: grid;
  gap: var(--space-5);
}

.grid > * {
  min-width: 0;
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-6 {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.grid-12 {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.section {
  padding-block: var(--section-spacing-mobile);
}

.section > :last-child {
  margin-block-end: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background-color: var(--color-ink-strong);
  color: var(--color-white);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 10000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (min-width: 768px) {
  .container,
  .container-wide {
    padding-inline: var(--container-padding-desktop);
  }

  .section {
    padding-block: var(--section-spacing-desktop);
  }

  .display {
    font-size: var(--text-display-size);
  }

  h1 {
    font-size: var(--text-h1-size);
  }

  h2 {
    font-size: var(--text-h2-size);
  }

  h3 {
    font-size: var(--text-h3-size);
  }

  h4 {
    font-size: var(--text-h4-size);
  }
}

@media (max-width: 767px) {
  .display {
    font-size: var(--text-h1-size);
    line-height: var(--text-h1-line-height);
    letter-spacing: var(--text-h1-tracking);
    font-weight: var(--text-h1-weight);
  }

  h1 {
    font-size: var(--text-h2-size);
    line-height: var(--text-h2-line-height);
    letter-spacing: var(--text-h2-tracking);
    font-weight: var(--text-h2-weight);
  }

  h2 {
    font-size: var(--text-h3-size);
    line-height: var(--text-h3-line-height);
    letter-spacing: var(--text-h3-tracking);
    font-weight: var(--text-h3-weight);
  }

  h3 {
    font-size: var(--text-h4-size);
    line-height: var(--text-h4-line-height);
    letter-spacing: var(--text-h4-tracking);
    font-weight: var(--text-h4-weight);
  }

  .body-lg {
    font-size: var(--text-body-size);
    line-height: var(--text-body-line-height);
    letter-spacing: var(--text-body-tracking);
    font-weight: var(--text-body-weight);
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .grid-6,
  .grid-12 {
    grid-template-columns: 1fr;
  }

  .flex {
    flex-direction: column;
  }

  .flex-nowrap {
    flex-wrap: wrap;
  }

  .btn {
    width: 100%;
  }
}

@media (min-width: 768px) and (max-width: 1199px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-6 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid-12 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}