:root {
  --color-bg: #f2f2f3;
  --color-text: #1d1f20;
  --color-accent: #5980a6;
  --color-accent-btn-text: #f2f2f3;
  --color-divider: color-mix(in srgb, var(--color-text) 16%, transparent);

  --color-accent-100: #eef6ff;
  --color-accent-200: #d6ebff;
  --color-accent-400: #94bce3;
  --color-accent-600: #597ea3;
  --color-accent-700: #416180;
  --color-accent-800: #2c455d;
  --color-accent-900: #1d2d3d;

  --color-neutral-100: #f5f5f8;
  --color-neutral-200: #e7e7ea;
  --color-neutral-800: #424244;

  --color-kicker: var(--color-accent-700);
  --tag-accent-bg: var(--color-accent-100);
  --tag-accent-text: var(--color-accent-800);
  --tag-neutral-bg: var(--color-neutral-100);
  --tag-neutral-text: var(--color-neutral-800);

  --font-heading: "Barlow Condensed", system-ui, sans-serif;
  --font-body: "Barlow", system-ui, sans-serif;

  --max-width: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #16181b;
    --color-text: #e7e9eb;
    --color-kicker: var(--color-accent-400);
    --tag-accent-bg: var(--color-accent-800);
    --tag-accent-text: var(--color-accent-200);
    --tag-neutral-bg: var(--color-neutral-800);
    --tag-neutral-text: var(--color-neutral-200);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

a {
  color: inherit;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
}

/* — blueprint corner marks — */
.blueprint {
  position: relative;
}
.blueprint > .corner {
  position: absolute;
  width: 11px;
  height: 11px;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}
.blueprint > .corner::before,
.blueprint > .corner::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.blueprint > .corner::before { left: 5px; top: 0; width: 1px; height: 100%; }
.blueprint > .corner::after  { top: 5px; left: 0; width: 100%; height: 1px; }
.blueprint > .corner.tl { top: -6px; left: -6px; }
.blueprint > .corner.tr { top: -6px; right: -6px; }
.blueprint > .corner.bl { bottom: -6px; left: -6px; }
.blueprint > .corner.br { bottom: -6px; right: -6px; }

/* — nav — */
.nav-bar {
  border-bottom: 1px solid var(--color-divider);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 14px 40px;
}

.nav-brand {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.02em;
  margin-right: auto;
  text-decoration: none;
  color: var(--color-text);
}

nav {
  display: flex;
  gap: 28px;
}

nav a {
  text-decoration: none;
  font-size: 14px;
  color: var(--color-text);
}

nav a:hover {
  color: var(--color-accent);
}

/* — meta strip — */
.meta-strip {
  border-bottom: 1px solid var(--color-divider);
}

.meta-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 40px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}

/* — hero — */
.hero {
  padding: 72px 40px 64px;
  border-bottom: 1px solid var(--color-divider);
}

.kicker {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-kicker);
  margin: 0 0 14px;
}

.hero h1 {
  font-size: 58px;
  line-height: 1.06;
  max-width: 720px;
  margin-bottom: 18px;
}

.hero-sub {
  margin: 0 0 32px;
  max-width: 560px;
  font-size: 16px;
  color: color-mix(in srgb, var(--color-text) 68%, transparent);
}

.hero-actions {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 10px 22px;
  text-decoration: none;
  border-radius: 0;
}

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

.btn-primary:hover {
  background: var(--color-accent-600);
}

.btn-secondary {
  border: 1px solid var(--color-divider);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: color-mix(in srgb, var(--color-text) 7%, transparent);
}

/* — sections — */
.section {
  padding: 56px 40px;
  border-bottom: 1px solid var(--color-divider);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.section-head h2 {
  font-size: 32px;
}

.fig-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}

/* — apps grid — */
.app-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.card {
  border: 1px solid var(--color-divider);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-kicker {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-kicker);
}

.card-title {
  font-size: 24px;
  line-height: 1.15;
}

.card-body {
  margin: 0;
  font-size: 14px;
  color: color-mix(in srgb, var(--color-text) 68%, transparent);
  flex: 1;
}

.tag {
  display: inline-flex;
  align-self: flex-start;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
}

.tag-accent {
  background: var(--tag-accent-bg);
  color: var(--tag-accent-text);
}

.tag-neutral {
  background: var(--tag-neutral-bg);
  color: var(--tag-neutral-text);
}

.card-link {
  font-size: 13px;
  color: #b5d9fd;
  text-decoration: underline;
  text-underline-offset: 3px;
  align-self: flex-start;
}

/* — split sections (about / support) — */
.split {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
}

.split h2 {
  font-size: 32px;
}

.split-body {
  margin: 0;
  font-size: 16px;
  max-width: 620px;
  color: color-mix(in srgb, var(--color-text) 80%, transparent);
}

.section-dark {
  background: var(--color-accent-900);
  color: #f2f2f3;
  border-bottom: none;
}

.section-dark .split-body p {
  margin: 0 0 16px;
  font-size: 16px;
  max-width: 560px;
  color: rgba(242, 242, 243, 0.75);
}

.support-email {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 24px;
  color: #b5d9fd;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* — footer — */
.site-footer {
  padding: 20px 40px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 12px;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
  flex-wrap: wrap;
}

.footer-inner a {
  text-decoration: none;
}

.footer-inner a:hover {
  color: var(--color-accent);
}

/* — responsive — */
@media (max-width: 860px) {
  .container,
  .nav-inner,
  .meta-inner,
  .hero,
  .section,
  .site-footer {
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero {
    padding-top: 56px;
    padding-bottom: 48px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .meta-inner {
    flex-direction: column;
    gap: 4px;
  }

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

  .split {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  nav {
    gap: 16px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }
}