:root {
  --color-brand-primary: #1f2f8f;
  --color-brand-secondary: #5d63d8;
  --color-brand-tertiary: #a07bef;
  --color-brand-accent-soft: #c9b7f7;
  --color-surface-canvas: #f8f6fb;
  --color-surface-subtle: #f1eefa;
  --color-surface-card: #ffffff;
  --color-text-primary: #1d2460;
  --color-text-secondary: #4c568a;
  --color-text-muted: #7d86b2;
  --color-text-on-brand: #ffffff;
  --color-border-subtle: #c9b7f7;
  --gradient-brand: linear-gradient(135deg, #1f2f8f 0%, #5d63d8 55%, #a07bef 100%);
  --gradient-hero: var(--gradient-brand);
  --gradient-cta: linear-gradient(135deg, #3d4fe0 0%, #7c6cf4 100%);
  --shadow-xs: 0 1px 2px rgb(29 36 96 / 0.06);
  --shadow-sm: 0 6px 18px rgb(29 36 96 / 0.08);
  --shadow-md: 0 12px 28px rgb(29 36 96 / 0.12);
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-pill: 999px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --container-max: 72rem;
  --header-height: 5rem;
  --logo-height-desktop: 46px;
  --logo-height-mobile: 36px;
}

.theme-go {
  --color-brand-primary: #1f2f8f;
  --color-brand-secondary: #6a3fd1;
  --color-brand-tertiary: #f47c7c;
  --color-brand-accent-soft: #d9c7f8;
  --color-surface-canvas: #fbf7fa;
  --color-surface-subtle: #f6f0f8;
  --color-surface-card: #ffffff;
  --color-text-primary: #1d2460;
  --color-text-secondary: #4c568a;
  --color-text-muted: #7a7fa8;
  --color-border-subtle: #d9c7f8;
  --gradient-brand: linear-gradient(135deg, #6a3fd1 0%, #a07bef 35%, #f47c7c 100%);
  --gradient-hero: var(--gradient-brand);
  --logo-height-mobile: 44px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  color: var(--color-text-primary);
  background: var(--color-surface-canvas);
  line-height: 1.5;
}

a {
  color: var(--color-brand-primary);
  font-weight: 600;
  text-decoration-color: color-mix(in srgb, var(--color-brand-primary), transparent 45%);
}

.container {
  width: min(calc(100% - 2 * var(--space-4)), var(--container-max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--color-surface-canvas), white 35%);
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header__inner {
  min-height: max(var(--header-height), calc(var(--logo-height-mobile) + 1.25rem));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding-block: var(--space-3);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 2.75rem;
  padding-inline: var(--space-2);
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

.site-brand__logo {
  width: auto;
  height: var(--logo-height-mobile);
  object-fit: contain;
  display: block;
  border-radius: 0.35rem;
}

.u-logo-size {
  width: auto;
  height: var(--logo-height-mobile);
  object-fit: contain;
  display: block;
}

.site-nav {
  display: none;
  align-items: center;
  gap: var(--space-4);
}

.site-nav a { color: var(--color-text-secondary); text-decoration: none; font-weight: 500; }
.site-nav a.is-active {
  color: var(--color-brand-primary);
  text-decoration: underline;
  text-decoration-thickness: 0.12rem;
  text-underline-offset: 0.2rem;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface-card);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
}
.nav-toggle.is-open {
  background: var(--color-surface-subtle);
}

body.nav-open .site-nav {
  position: absolute;
  inset: calc(var(--header-height) - 0.5rem) var(--space-4) auto;
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface-subtle);
}

.lang-btn,
.lang-switcher a {
  border: 0;
  background: transparent;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  font-weight: 600;
  cursor: pointer;
}

.lang-btn.is-active,
.lang-switcher .is-active {
  background: var(--color-surface-card);
  color: var(--color-brand-primary);
  box-shadow: var(--shadow-xs);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.btn-primary { color: var(--color-text-on-brand); background: var(--gradient-cta); box-shadow: var(--shadow-sm); }
.btn-secondary { color: var(--color-brand-primary); background: var(--color-surface-card); border-color: var(--color-border-subtle); }
.site-header__cta { margin-left: auto; }

main {
  width: min(calc(100% - 2 * var(--space-4)), var(--container-max));
  margin-inline: auto;
  padding-block: var(--space-7);
}

.section { padding-block: var(--space-6); }
.section h2 { margin-top: 0; }

.section-card {
  padding: var(--space-7) var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-sm);
}

.hero {
  color: var(--color-text-on-brand);
  background: var(--gradient-hero);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.hero h1 { margin: 0 0 var(--space-3); }
.hero__lead { max-width: 48rem; margin: 0 auto var(--space-5); }
.hero__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; justify-content: center; }
.eyebrow { margin: 0 0 var(--space-3); font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; font-size: 0.78rem; }

.section-highlight {
  text-align: center;
  padding: var(--space-7) var(--space-5);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #1f2f8f 0%, #5d63d8 50%, #a07bef 100%);
  color: var(--color-text-on-brand);
}

.grid { display: grid; gap: var(--space-4); }
.grid-cards { grid-template-columns: 1fr; }

.card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-5);
}

.card h3 { margin-top: 0; }
.card p { margin-bottom: 0; color: var(--color-text-secondary); }

.site-footer {
  margin-top: var(--space-7);
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-surface-subtle);
}

.site-footer__inner { padding-block: var(--space-5); color: var(--color-text-muted); }
.site-footer__grid { display: grid; gap: var(--space-4); }
.footer-links { display: grid; gap: var(--space-2); }
.footer-links a[aria-disabled='true'] { pointer-events: none; opacity: 0.7; }

@media (min-width: 48rem) {
  .nav-toggle { display: none; }
  .site-nav { display: inline-flex; }
  .grid-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-header__inner { flex-wrap: nowrap; }
}

@media (min-width: 64rem) {
  .grid-cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .site-footer__grid { grid-template-columns: 1.2fr 1fr 1fr; align-items: start; }
}

.site-header__inner--go {
  align-items: center;
  gap: var(--space-4);
}

.site-brand--go {
  gap: var(--space-3);
  flex-shrink: 0;
}

.site-brand__name--go {
  font-size: 1.05rem;
  line-height: 1.1;
}

.go-logo {
  width: auto;
  height: var(--logo-height-mobile);
  object-fit: contain;
  display: block;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-xs);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  flex-wrap: wrap;
  flex: 1 1 100%;
  justify-content: flex-end;
}

.section-strip {
  text-align: center;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-brand-primary);
}

.grid-cards-2 {
  grid-template-columns: 1fr;
}

.card-highlight {
  background: color-mix(in srgb, var(--color-brand-secondary), white 90%);
}

.steps-list {
  margin: 0;
  padding-left: 1.25rem;
  display: grid;
  gap: var(--space-3);
}

.steps-list li {
  color: var(--color-text-secondary);
}

.steps-list strong {
  display: block;
  color: var(--color-text-primary);
  margin-bottom: 0.2rem;
}

.contact-form {
  display: grid;
  gap: var(--space-3);
  max-width: 42rem;
}

.contact-form label {
  display: grid;
  gap: var(--space-1);
  color: var(--color-text-secondary);
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface-card);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.8rem;
  color: var(--color-text-primary);
  font: inherit;
}

.form-feedback {
  margin: 0;
  font-size: 0.95rem;
  color: #0d7a3a;
}

.field-feedback {
  margin: 0;
  font-size: 0.85rem;
  color: #b42318;
  font-weight: 500;
}

.contact-form [aria-invalid='true'] {
  border-color: #b42318;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 320ms ease, transform 320ms ease;
}

.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

.site-footer__inner--go {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

@media (min-width: 48rem) {
  .grid-cards-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-header__inner {
    min-height: max(var(--header-height), calc(var(--logo-height-desktop) + 1.25rem));
    gap: var(--space-5);
  }

  .site-brand {
    min-height: 3.25rem;
    padding-inline: var(--space-3);
  }

  .u-logo-size,
  .site-brand__logo,
  .go-logo {
    height: var(--logo-height-desktop);
  }

  .header-actions {
    flex: 0 1 auto;
    justify-content: flex-end;
  }

  .site-header__inner--go .site-nav {
    margin-left: auto;
  }

  .site-header__inner--go .header-actions {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}