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

:root {
  color-scheme: light dark;
  --color-bg: #f4f1ec;
  --color-ink: #1a1916;
  --color-ink-soft: #5c5a54;
  --color-ink-mute: #8a877f;
  --color-rule: #d4cfc6;
  --font-display: 'Newsreader', 'Georgia', serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
  --measure: 740px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

[data-theme="dark"] {
  --color-bg: #16007F;
  --color-ink: #f4f1ec;
  --color-ink-soft: rgba(244, 241, 236, 0.85);
  --color-ink-mute: rgba(244, 241, 236, 0.55);
  --color-rule: rgba(244, 241, 236, 0.16);
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-ink);
  background: var(--color-bg);
}

a { color: inherit; }

::selection {
  background: var(--color-ink);
  color: var(--color-bg);
}

.site-header,
.article,
.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-mark {
  height: 26px;
  width: auto;
  display: block;
}

.brand-mark--dark { display: none; }
[data-theme="dark"] .brand-mark--light { display: none; }
[data-theme="dark"] .brand-mark--dark { display: block; }

.brand-name {
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
  font-size: 0.875rem;
}

.site-nav a {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.site-nav a:hover { color: var(--color-ink); }

.article {
  padding-block: clamp(5rem, 11vw, 9rem) clamp(4rem, 9vw, 7rem);
}

.article-inner {
  max-width: var(--measure);
  margin-inline: auto;
}

.section-label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-mute);
  margin-bottom: 1.75rem;
}

.article-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.75rem, 4.2vw, 2.75rem);
  line-height: 1.3;
  letter-spacing: -0.015em;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.article-body p {
  color: var(--color-ink-soft);
  margin-bottom: 1.5rem;
}

.article-body p:last-child {
  margin-bottom: 0;
}

.back-link {
  display: inline-block;
  margin-top: clamp(2.5rem, 6vw, 4rem);
  color: var(--color-ink);
  font-size: 0.875rem;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.site-footer {
  padding-block: 2.5rem 2rem;
  border-top: 1px solid var(--color-rule);
}

.footer-inner {
  max-width: var(--measure);
  margin-inline: auto;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--color-ink-mute);
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
  }

  .site-nav {
    gap: 1rem;
  }
}