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

:root {
  --paper:    #F4F1EA;
  --card:     #FFFFFF;
  --card-2:   #F7F5EF;
  --ink:      #1C1B17;
  --ink-2:    #56544B;
  --ink-3:    #918E82;
  --border:   rgba(28,27,23,0.10);
  --border-2: rgba(28,27,23,0.06);
  --accent:   #3B45D1;
  --accent-ink: #2B33A8;
  --accent-wash: #E7E8FA;
  --pos:      #1B9268;
  --pos-wash: #E2F1EA;
  --neg:      #DD5C36;
  --neg-wash: #FAE8E0;
  --amber:    #DC9A2C;
  --amber-wash: #F8EFD8;
  --font-ui:  'Hanken Grotesk', -apple-system, system-ui, sans-serif;
  --font-ed:  'Newsreader', Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

body {
  font-family: var(--font-ui);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Nav */
nav {
  background: rgba(244,241,234,0.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border-2);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-inner {
  max-width: 760px;
  margin: 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-ed);
  font-size: 17px;
  color: var(--ink);
  text-decoration: none;
}

.nav-back { font-size: 13px; font-weight: 600; color: var(--ink-2); }

/* Layout */
.page { max-width: 760px; margin: 0 auto; padding: 56px 24px 96px; }

/* Blog index header */
.doc-label {
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.doc-title {
  font-family: var(--font-ed);
  font-weight: 400;
  font-size: 38px;
  letter-spacing: -1px;
  color: var(--ink);
  margin-bottom: 12px;
}

.doc-sub { font-size: 15.5px; color: var(--ink-2); max-width: 560px; }

.index-header { margin-bottom: 48px; padding-bottom: 32px; border-bottom: 1px solid var(--border); }

/* Post cards on index */
.post-list { display: flex; flex-direction: column; gap: 16px; }

.post-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px 28px;
  box-shadow: 0 1px 2px rgba(28,27,23,0.04), 0 4px 14px rgba(28,27,23,0.04);
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.post-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(28,27,23,0.08); border-color: color-mix(in srgb, var(--accent) 30%, transparent); text-decoration: none; }

.post-card .post-kicker { font-size: 11.5px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }

.post-card h2 { font-family: var(--font-ed); font-weight: 400; font-size: 24px; letter-spacing: -0.4px; color: var(--ink); margin-bottom: 10px; }

.post-card p { font-size: 14.5px; color: var(--ink-2); margin-bottom: 0; }

.post-card .post-meta { margin-top: 14px; font-size: 12.5px; color: var(--ink-3); font-family: var(--font-mono); }

/* Article header */
.doc-header { margin-bottom: 40px; padding-bottom: 28px; border-bottom: 1px solid var(--border); }
.doc-meta { font-size: 13px; color: var(--ink-3); }

/* Article prose */
.section { margin-bottom: 32px; }

h1.doc-title { font-size: 34px; }

article h2 {
  font-family: var(--font-ed);
  font-weight: 400;
  font-size: 24px;
  letter-spacing: -0.3px;
  color: var(--ink);
  margin: 36px 0 12px;
  padding-top: 0;
}

article h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin: 24px 0 8px;
}

article p { font-size: 15.5px; color: var(--ink-2); margin-bottom: 14px; }
article ul, article ol { margin: 8px 0 16px 22px; }
article li { font-size: 15.5px; color: var(--ink-2); margin-bottom: 8px; }
article strong { color: var(--ink); }

.lead { font-size: 18px; color: var(--ink-2); margin-bottom: 6px; }

.callout {
  background: var(--card-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 18px 22px;
  margin: 20px 0;
}
.callout p { margin: 0; font-size: 14.5px; color: var(--ink-2); }
.callout p + p { margin-top: 8px; }

.notice-green {
  background: var(--pos-wash);
  border: 1px solid color-mix(in srgb, var(--pos) 28%, transparent);
  border-radius: 14px;
  padding: 16px 20px;
  margin: 20px 0;
}
.notice-green p { margin: 0; font-size: 14px; color: #155A41; }

/* CTA card */
.cta-card {
  background: linear-gradient(165deg, #4750DD 0%, #343CC2 60%, #2B33A8 100%);
  color: #fff;
  border-radius: 18px;
  padding: 30px 32px;
  margin: 36px 0;
}
.cta-card h3 { font-family: var(--font-ed); font-weight: 400; font-size: 21px; color: #fff; margin-bottom: 8px; }
.cta-card p { color: rgba(255,255,255,0.82); font-size: 14.5px; margin-bottom: 18px; }
.cta-card a.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--accent-ink) !important;
  font-weight: 700; font-size: 14px;
  padding: 11px 20px; border-radius: 99px;
  text-decoration: none;
}
.cta-card a.btn:hover { text-decoration: none; opacity: 0.92; }

/* Related posts */
.related { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.related h3 { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: 1px; color: var(--ink-3); margin-bottom: 16px; }
.related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.related-grid a {
  display: block; background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px; font-size: 14px; font-weight: 700; color: var(--ink); text-decoration: none;
}
.related-grid a:hover { border-color: var(--accent); text-decoration: none; }
.related-grid a span { display: block; font-weight: 400; font-size: 12.5px; color: var(--ink-3); margin-top: 4px; }

/* Footer */
footer { border-top: 1px solid var(--border-2); padding: 26px 24px; text-align: center; }
.footer-inner { max-width: 760px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-copy { font-size: 12px; color: var(--ink-3); }
.footer-links { display: flex; gap: 18px; }
.footer-links a { font-size: 12px; font-weight: 600; color: var(--ink-3); }

@media (max-width: 600px) {
  .doc-title { font-size: 28px; }
  h1.doc-title { font-size: 26px; }
  .footer-inner { justify-content: center; }
  .related-grid { grid-template-columns: 1fr; }
}