/* ============================================================
   IkeOS "Observatory" — Light Theme
   ============================================================ */

/* ── Design tokens ── */
:root {
  /* Colors */
  --bg-canvas:    #F8F7FC;
  --bg-surface:   #FFFFFF;
  --bg-inset:     #F2EFF8;

  --text-primary:   #120A1F;
  --text-secondary: #3F3552;
  --text-tertiary:  #6B6385;
  --text-muted:     #9B94AE;

  --border-subtle:  rgba(18,10,31,0.06);
  --border-default: rgba(18,10,31,0.10);
  --border-strong:  rgba(18,10,31,0.18);

  --brand-purple:    #7C3AED;
  --brand-purple-700:#5B21B6;
  --brand-orange:    #FF7849;
  --essay-ink:       #C2410C;
  --note-teal:       #2DD4BF;
  --note-ink:        #0F766E;

  --code-bg:   #1B1130;
  --code-text: #C8C0DA;

  /* Fonts */
  --font-display:   "DM Serif Display", Georgia, ui-serif, serif;
  --font-sans:      "Geist", ui-sans-serif, system-ui, sans-serif;
  --font-editorial: "Manrope", ui-sans-serif, system-ui, sans-serif;
  --font-mono:      "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Shadows */
  --shadow-sm: 0 2px 6px rgba(18,10,31,.08), 0 1px 2px rgba(18,10,31,.04);
  --shadow-md: 0 6px 16px rgba(18,10,31,.10), 0 2px 4px rgba(18,10,31,.04);

  /* Spacing */
  --space-3:  8px;
  --space-4:  12px;
  --space-5:  16px;
  --space-6:  20px;
  --space-7:  24px;
  --space-8:  32px;
  --space-9:  40px;
  --space-10: 48px;

  /* Radius */
  --radius-md:   10px;
  --radius-lg:   14px;
  --radius-pill: 999px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 0.84, 0.30, 1);
  --dur-base: 280ms;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-canvas);
  color: var(--text-secondary);
  font-family: var(--font-editorial);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { background: rgba(124,58,237,0.16); color: var(--text-primary); }

/* ── Masthead ── */
.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(18,10,31,0.08);
}

.masthead-brand {
  display: flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
}

.masthead-wordmark {
  font: 400 24px/1 var(--font-display);
  color: var(--text-primary);
}

.masthead-eyebrow {
  font: 500 9px/1 var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 5px;
}

.masthead-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-item {
  position: relative;
  padding: 7px 0;
  font: 500 14px/1 var(--font-sans);
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--dur-base) var(--ease-out);
}
.nav-item:hover { color: var(--text-primary); }
.nav-item--active { color: var(--text-primary); }

.nav-item__underline {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand-orange);
}

.nav-rss {
  display: flex;
  color: var(--text-muted);
  transition: color var(--dur-base) var(--ease-out);
}
.nav-rss:hover { color: var(--brand-purple); }

/* ── Page shell ── */
.page-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 40px;
  width: 100%;
}

/* ── Hero (Home) ── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 48px 40px 36px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  margin: 0 -40px;
}

.hero__watermark {
  position: absolute;
  right: 48px;
  top: 50%;
  transform: translateY(-50%);
  width: 120px;
  opacity: 0.10;
  pointer-events: none;
  animation: ike-float 26s ease-in-out infinite;
}

.hero__content {
  position: relative;
  max-width: 660px;
}

.hero__eyebrow {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--essay-ink);
  margin-bottom: 16px;
}

.hero__h1 {
  font: 400 40px/1.08 var(--font-display);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0 0 14px;
}

.hero__sub {
  font: 400 17px/1.62 var(--font-editorial);
  color: var(--text-secondary);
  margin: 0;
  max-width: 560px;
}

@keyframes ike-float {
  0%, 100% { transform: translateY(-50%) translateX(0); }
  50%       { transform: translateY(-50%) translateX(-7px); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__watermark { animation: none; }
}

/* ── Page grid (two-column) ── */
.page-grid {
  display: grid;
  grid-template-columns: minmax(0,1fr) 300px;
  gap: 48px;
  padding: 38px 0 16px;
  align-items: start;
}

.page-grid--archive {
  display: grid;
  grid-template-columns: minmax(0,1fr) 280px;
  gap: 48px;
  padding: 38px 0 16px;
  align-items: start;
}

.page-grid--post {
  display: grid;
  grid-template-columns: minmax(0,1fr) 280px;
  gap: 52px;
  padding: 18px 0 8px;
  align-items: start;
}

.page-grid__main { min-width: 0; }

/* ── Eyebrow / section label ── */
.eyebrow {
  font: 500 11px/1 var(--font-sans);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.section-label { margin-bottom: 16px; }

/* ── Kind badge ── */
.kind-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 500 11px/1 var(--font-sans);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.kind-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.kind-badge--essay { color: var(--essay-ink); }
.kind-badge--essay .kind-dot { background: var(--brand-orange); }

.kind-badge--note { color: var(--note-ink); }
.kind-badge--note .kind-dot { background: var(--note-teal); }

/* ── Post meta time ── */
.post-meta-time {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

/* ── Featured card ── */
.post-card--featured {
  display: block;
  color: inherit;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px 32px;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}
.post-card--featured:hover {
  box-shadow: 0 18px 38px rgba(18,10,31,0.13);
  border-color: var(--border-strong);
}

.post-card--featured .post-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.post-card--featured .post-card__title--featured {
  font: 400 30px/1.16 var(--font-display);
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0 0 12px;
}

.post-card--featured .post-card__excerpt--featured {
  font: 400 17px/1.6 var(--font-editorial);
  color: var(--text-secondary);
  margin: 0 0 18px;
}

.post-card__cta {
  font: 600 14px/1 var(--font-sans);
  color: var(--brand-purple);
}

/* ── Standard post card ── */
.post-card-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.post-card {
  display: block;
  color: inherit;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}
.post-card:hover {
  box-shadow: 0 16px 34px rgba(18,10,31,0.12);
  border-color: var(--border-strong);
}

.post-card .post-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 11px;
}

.post-card .post-card__title {
  font: 400 21px/1.24 var(--font-display);
  letter-spacing: -0.005em;
  color: var(--text-primary);
  margin: 0 0 8px;
}

.post-card .post-card__excerpt {
  font: 400 15px/1.55 var(--font-editorial);
  color: var(--text-tertiary);
  margin: 0;
}

/* ── Archive link ── */
.archive-link {
  display: inline-block;
  margin: 24px 0 0;
  font: 600 14px/1 var(--font-sans);
  color: var(--brand-purple);
}
.archive-link:hover { color: var(--brand-purple-700); }

/* ── Archive hero ── */
.archive-hero {
  padding: 42px 40px 28px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  margin: 0 -40px;
}

.archive-hero__eyebrow {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--essay-ink);
  margin-bottom: 16px;
}

.archive-hero__h1 {
  font: 400 36px/1.08 var(--font-display);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0 0 10px;
}

.archive-hero__sub {
  font: 400 16px/1.6 var(--font-editorial);
  color: var(--text-tertiary);
  margin: 0;
}

/* ── Month group (archive) ── */
.month-group { margin-bottom: 30px; }

.month-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.month-header__label {
  font: 400 22px/1 var(--font-display);
  color: var(--text-primary);
  margin: 0;
  flex-shrink: 0;
}

.month-header__rule {
  flex: 1;
  height: 1px;
  background: var(--border-default);
}

.month-header__count {
  font: 500 11px/1 var(--font-mono);
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ── Post row (archive) ── */
.post-row {
  display: grid;
  grid-template-columns: 96px minmax(0,1fr);
  gap: 22px;
  align-items: baseline;
  padding: 17px 14px;
  color: inherit;
  border-bottom: 1px solid rgba(18,10,31,0.07);
  transition: background var(--dur-base) var(--ease-out);
}
.post-row:hover { background: var(--bg-surface); }

.post-row__date {
  font: 500 12px/1.7 var(--font-mono);
  color: var(--text-muted);
  white-space: nowrap;
}

.post-row__body { min-width: 0; }

.post-row__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.post-row__readtime {
  font: 500 11px/1 var(--font-mono);
  color: #C4BCD6;
}

.post-row__title {
  font: 400 20px/1.25 var(--font-display);
  color: var(--text-primary);
  margin: 0 0 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.post-row__excerpt {
  font: 400 14px/1.5 var(--font-editorial);
  color: var(--text-muted);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Sidebar ── */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-grid--post > .sidebar {
  position: sticky;
  top: 18px;
  align-self: start;
}

.sidebar-card {
  position: relative;
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}

.sidebar-eyebrow {
  font: 500 11px/1 var(--font-sans);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 14px;
  display: block;
}

.sidebar-watermark {
  position: absolute;
  right: -22px;
  top: -22px;
  width: 92px;
  opacity: 0.08;
  pointer-events: none;
}

.sidebar-card__inner { position: relative; }

.sidebar-about-text {
  font: 400 14px/1.6 var(--font-editorial);
  color: var(--text-secondary);
  margin: 0 0 10px;
}

.sidebar-about-sub {
  font: 400 14px/1.6 var(--font-editorial);
  color: var(--text-tertiary);
  margin: 0 0 14px;
}

.sidebar-cta {
  font: 600 13px/1 var(--font-sans);
  color: var(--brand-purple);
}
.sidebar-cta:hover { color: var(--brand-purple-700); }

/* ── Topic pills ── */
.topic-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.topic-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 11px;
  background: var(--bg-inset);
  border-radius: var(--radius-pill);
  font: 500 12px/1 var(--font-sans);
  color: var(--text-secondary);
  transition: background var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out);
}
.topic-pill:hover {
  background: #EDE4FF;
  color: var(--brand-purple-700);
}

.topic-count {
  font: 500 11px/1 var(--font-mono);
  color: var(--text-muted);
}

/* ── Recent list ── */
.recent-list {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.recent-item {
  display: block;
  color: inherit;
  transition: color var(--dur-base) var(--ease-out);
}
.recent-item:hover { color: var(--brand-purple); }

.recent-item__date {
  display: block;
  font: 500 10px/1 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 5px;
}

.recent-item__title {
  font: 500 13px/1.4 var(--font-sans);
  color: var(--text-primary);
}

/* ── Connect list ── */
.connect-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.connect-row {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--text-secondary);
  transition: color var(--dur-base) var(--ease-out);
}
.connect-row:hover { color: var(--brand-purple); }

.connect-icon {
  width: 17px;
  display: flex;
  flex-shrink: 0;
  color: var(--text-tertiary);
}

.connect-label { font: 500 13px/1 var(--font-sans); }

.connect-meta {
  margin-left: auto;
  font: 500 12px/1 var(--font-mono);
  color: var(--text-muted);
}

/* ── Browse list (archive sidebar) ── */
.browse-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.browse-row {
  display: flex;
  align-items: center;
  color: var(--text-primary);
  transition: color var(--dur-base) var(--ease-out);
}
.browse-row:hover { color: var(--brand-purple); }

.browse-label {
  font: 500 13px/1 var(--font-sans);
  display: flex;
  align-items: center;
  gap: 8px;
}
.browse-row--all .browse-label { font: 500 13px/1 var(--font-sans); }

.browse-count {
  margin-left: auto;
  font: 500 12px/1 var(--font-mono);
  color: var(--text-muted);
}

.browse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.browse-dot--essay { background: var(--brand-orange); }
.browse-dot--note  { background: var(--note-teal); }

/* ── Article (post reading view) ── */
.post-main { padding-top: 30px; }

.article__back {
  display: inline-block;
  font: 500 12px/1 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 24px;
  transition: color var(--dur-base) var(--ease-out);
}
.article__back:hover { color: var(--brand-purple); }

.article { max-width: 660px; }

.article__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.article__meta-time {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.article__h1 {
  font: 400 44px/1.1 var(--font-display);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0 0 18px;
}

.article__description {
  font: 400 20px/1.55 var(--font-editorial);
  color: var(--text-muted);
  margin: 0 0 28px;
}

.article__divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 0 0 28px;
}

/* ── Prose body (.ike-prose) ── */
.ike-prose {
  font: 400 18px/1.72 var(--font-editorial);
  color: var(--text-secondary);
}
.ike-prose p { margin: 0 0 18px; }
.ike-prose h2 {
  font: 400 28px/1.2 var(--font-display);
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 36px 0 14px;
}
.ike-prose h3 {
  font: 600 20px/1.3 var(--font-sans);
  color: var(--text-primary);
  margin: 28px 0 10px;
}
.ike-prose a {
  color: var(--brand-purple);
  text-decoration: underline;
  text-decoration-color: rgba(124,58,237,0.3);
  transition: text-decoration-color var(--dur-base) var(--ease-out);
}
.ike-prose a:hover { text-decoration-color: var(--brand-purple); }
.ike-prose code {
  font: 500 14px/1 var(--font-mono);
  background: var(--bg-inset);
  color: var(--brand-purple-700);
  padding: 2px 6px;
  border-radius: 5px;
}
.ike-prose pre {
  background: var(--code-bg);
  border-radius: 10px;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 22px 0;
}
.ike-prose pre code {
  background: none;
  color: var(--code-text);
  padding: 0;
  font-size: 13px;
  line-height: 1.75;
}
.ike-prose blockquote {
  margin: 30px 0;
  padding: 6px 0 6px 24px;
  border-left: 3px solid var(--brand-orange);
}
.ike-prose blockquote p {
  font: 400 24px/1.4 var(--font-display);
  color: var(--text-primary);
  margin: 0;
}
.ike-prose ul,
.ike-prose ol {
  padding-left: 1.5rem;
  margin: 0 0 18px;
}
.ike-prose li { margin: 0.35rem 0; }
.ike-prose img {
  max-width: 100%;
  border-radius: 8px;
  margin: 24px 0;
}
.ike-prose hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 2rem 0;
}
.ike-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1.5rem 0;
}
.ike-prose th {
  text-align: left;
  padding: 0.6rem 1rem;
  border-bottom: 2px solid var(--border-default);
  color: var(--text-tertiary);
  font: 600 14px/1 var(--font-sans);
}
.ike-prose td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

/* Drop cap — opt-in with .drop-cap on .ike-prose */
.ike-prose.drop-cap > p:first-of-type::first-letter {
  float: left;
  font: 400 58px/0.82 var(--font-display);
  color: var(--brand-orange);
  padding: 6px 12px 0 0;
}

/* ── Article footer ── */
.article__footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.article__tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.article__discuss {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  font: 600 13px/1 var(--font-sans);
  color: var(--text-secondary);
  transition: border-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out);
}
.article__discuss:hover {
  border-color: var(--brand-purple);
  color: var(--brand-purple);
}

/* ── Prev/Next nav ── */
.article__prevnext {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
}

.prevnext-item {
  max-width: 48%;
  display: block;
  color: inherit;
  opacity: 1;
  transition: opacity var(--dur-base) var(--ease-out);
}
.prevnext-item:hover { opacity: 0.7; }
.prevnext-item--next { text-align: right; margin-left: auto; }

.prevnext-label {
  display: block;
  font: 500 11px/1 var(--font-mono);
  color: var(--text-muted);
  margin-bottom: 5px;
}

.prevnext-title {
  display: block;
  font: 400 16px/1.3 var(--font-display);
  color: var(--text-primary);
}

/* ── TOC (post sidebar) ── */
.toc-card .toc nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.toc-card .toc nav ul li a {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 500 13px/1.35 var(--font-sans);
  color: var(--text-tertiary);
  transition: color var(--dur-base) var(--ease-out);
}
.toc-card .toc nav ul li a:hover { color: var(--text-primary); }

.toc-card .toc nav ul li a::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1.5px solid #C4BCD6;
  flex-shrink: 0;
}

.toc-card .toc nav ul li.active a,
.toc-card .toc nav ul li a.active { color: var(--text-primary); }

.toc-card .toc nav ul li.active a::before,
.toc-card .toc nav ul li a.active::before {
  background: var(--brand-orange);
  border-color: var(--brand-orange);
}

/* ── About page ── */
.about-article { max-width: 660px; }

.about-transparency { margin-top: 8px; }

.about-transparency__heading {
  font: 400 28px/1.2 var(--font-display);
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.about-transparency__meta {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-transparency__sep { opacity: 0.4; }

.about-transparency__intro {
  font: 400 15px/1.65 var(--font-editorial);
  color: var(--text-tertiary);
  margin: 0 0 22px;
  max-width: 560px;
}

.voice-pre {
  background: var(--code-bg);
  color: var(--code-text);
  font: 400 12.5px/1.75 var(--font-mono);
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
  box-sizing: border-box;
  margin: 0;
}

/* ── About mini (post sidebar) ── */
.sidebar-card--about-mini .sidebar-about-mini-text {
  font: 400 13px/1.6 var(--font-editorial);
  color: var(--text-tertiary);
  margin: 0 0 12px;
}

.about-mini-socials {
  display: flex;
  gap: 14px;
}

.social-icon {
  color: var(--text-muted);
  display: flex;
  transition: color var(--dur-base) var(--ease-out);
}
.social-icon:hover { color: var(--brand-purple); }

/* ── Site footer ── */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 40px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  margin-top: 18px;
}

.footer-copy {
  font: 500 12px/1 var(--font-mono);
  color: var(--text-muted);
}

.footer-bsky {
  font: 500 12px/1 var(--font-sans);
  color: var(--text-muted);
  transition: color var(--dur-base) var(--ease-out);
}
.footer-bsky:hover { color: var(--brand-purple); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .masthead { padding: 14px 20px; }
  .page-shell { padding: 0 20px; }
  .hero { margin: 0 -20px; padding: 36px 20px 28px; }
  .archive-hero { margin: 0 -20px; padding: 32px 20px 22px; }
  .hero__h1 { font-size: 30px; }
  .archive-hero__h1 { font-size: 28px; }
  .page-grid,
  .page-grid--archive,
  .page-grid--post { grid-template-columns: 1fr; padding: 24px 0 16px; }
  .page-grid > .sidebar,
  .page-grid--archive > .sidebar,
  .page-grid--post > .sidebar { position: static; }
  .article__h1 { font-size: 32px; }
  .post-card--featured .post-card__title--featured { font-size: 24px; }
  .masthead-nav { gap: 16px; }
  .site-footer { padding: 18px 20px; flex-direction: column; gap: 8px; text-align: center; }
  .article__prevnext { flex-direction: column; }
  .prevnext-item--next { text-align: left; margin-left: 0; }
}

@media (max-width: 640px) {
  .hero__h1 { font-size: 26px; }
  .masthead-eyebrow { display: none; }
}