/* blog.css — All blog pages */

/* ════════════════════════════════════════════════════
   Reading prefs (theme + width)
   ════════════════════════════════════════════════════ */
html[data-blog-theme="light"] {
  --color-bg-base: #faf9f6;
  --color-bg-surface: #fff;
  --color-bg-elevated: #f3f1ec;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-text-muted: #777;
  --color-border: rgba(0, 0, 0, 0.1);
  background: #faf9f6;
  color: #1a1a1a;
}
html[data-blog-theme="light"] body { background: #faf9f6; color: #1a1a1a; }

/* Reading-controls bar */
.bp-toolbar-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-4) var(--space-6) 0;
  flex-wrap: wrap; gap: var(--space-3);
}
.reading-controls {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}
.rc-btn {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: none; cursor: pointer;
  color: var(--color-text-muted);
  border-radius: 999px;
  font-size: 14px;
  transition: all 200ms;
}
.rc-btn.rc-text { width: auto; padding: 0 10px; font-size: 11px; font-family: var(--font-mono); letter-spacing: 0.05em; text-transform: lowercase; }
.rc-btn:hover { color: var(--color-text-primary); background: rgba(255,255,255,0.05); }
.rc-btn.on { background: var(--color-brand); color: #fff; }
.rc-sep { width: 1px; height: 16px; background: var(--color-border); margin: 0 4px; }

/* ════════════════════════════════════════════════════
   Blog HOME
   ════════════════════════════════════════════════════ */
.blog-home { padding-top: var(--space-6); }

.bh-hero { padding: var(--space-7) 0 var(--space-8); }
.bh-hero-head { max-width: 720px; margin-bottom: var(--space-7); }
.bh-h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.0;
  margin: var(--space-3) 0 var(--space-4);
}
.bh-lead { max-width: 580px; }

.bh-featured-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-5);
}
@media (max-width: 900px) { .bh-featured-grid { grid-template-columns: 1fr; } }

.bh-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  padding: var(--space-5);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 250ms;
  align-items: center;
}
@media (max-width: 700px) { .bh-feature { grid-template-columns: 1fr; } }
.bh-feature:hover { border-color: rgba(var(--hr), 0.5); transform: translateY(-2px); }

.bh-feature-cover { position: relative; }
.bh-feature-pin {
  position: absolute; top: 12px; left: 12px;
  font-size: 10px; letter-spacing: 0.15em;
  padding: 4px 8px;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(8px);
  color: var(--h); border-radius: 4px;
}
.bh-feature-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--space-3);
}
.bh-feature-deck { color: var(--color-text-secondary); margin-bottom: var(--space-4); line-height: 1.6; }
.bh-feature-meta { display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; }
.bh-feature-read { color: var(--color-text-muted); font-size: 12px; }

.bh-sponsor {
  position: relative;
  padding: var(--space-6);
  background: linear-gradient(140deg, rgba(var(--hr), 0.12), rgba(var(--hr), 0.02));
  border: 1px solid rgba(var(--hr), 0.3);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.bh-sponsor-tag { font-size: 10px; letter-spacing: 0.2em; color: var(--h); margin-bottom: var(--space-3); }
.bh-sponsor-title {
  font-family: var(--font-display);
  font-size: 22px; font-weight: 600;
  letter-spacing: -0.02em; line-height: 1.2;
  margin-bottom: var(--space-3);
  cursor: pointer;
}
.bh-sponsor-title:hover { color: var(--h); }
.bh-sponsor-deck { font-size: 14px; color: var(--color-text-secondary); margin-bottom: var(--space-4); line-height: 1.6; }
.bh-sponsor-pulse {
  position: absolute; top: -40px; right: -40px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(var(--hr), 0.25), transparent 70%);
  pointer-events: none;
  animation: sp-pulse 4s ease-in-out infinite;
}
@keyframes sp-pulse { 0%,100% { opacity: 0.4; transform: scale(1); } 50% { opacity: 0.7; transform: scale(1.1); } }

/* Toolbar */
.bh-toolbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0 var(--space-4);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.bh-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.bh-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 150ms;
}
.bh-tag:hover { color: var(--color-text-primary); border-color: var(--color-text-secondary); }
.bh-tag.on { background: var(--color-brand); color: #fff; border-color: var(--color-brand); }

/* Shelf */
.bh-shelf { padding: var(--space-7) 0 var(--space-5); }
.bh-shelf-head { display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-4); }
.bh-shelf-title {
  display: flex; align-items: baseline; gap: var(--space-3);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}
.bh-shelf-dot { width: 10px; height: 10px; border-radius: 50%; align-self: center; }
.bh-shelf-label {}
.bh-shelf-desc {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 14px;
  color: var(--color-text-muted);
  letter-spacing: 0;
}
.bh-shelf-count { font-size: 11px; color: var(--color-text-muted); letter-spacing: 0.1em; }
.bh-count { font-size: 11px; color: var(--color-text-muted); letter-spacing: 0.1em; margin-left: var(--space-3); }

.bh-shelf-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(320px, 1fr);
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding-bottom: var(--space-3);
  margin: 0 calc(-1 * var(--space-3));
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}
.bh-shelf-rail::-webkit-scrollbar { height: 4px; }
.bh-shelf-rail::-webkit-scrollbar-thumb { background: rgba(var(--hr), 0.3); border-radius: 2px; }
.bh-shelf-rail .post-card { scroll-snap-align: start; }

.bh-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
}

/* Archive */
.bh-archive { padding: var(--space-8) 0 var(--space-9); border-top: 1px solid var(--color-border); margin-top: var(--space-7); }
.bh-archive-list { display: flex; flex-direction: column; margin-top: var(--space-4); }
.archive-row {
  display: grid;
  grid-template-columns: 100px 90px 1fr auto auto;
  gap: var(--space-4);
  align-items: baseline;
  padding: 14px 4px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  color: var(--color-text-primary);
  transition: all 150ms;
}
.archive-row:hover { background: rgba(var(--hr), 0.04); padding-left: 12px; }
.ar-date { font-size: 11px; color: var(--color-text-muted); }
.ar-cat { font-size: 11px; letter-spacing: 0.1em; }
.ar-title { font-family: var(--font-display); font-size: 16px; font-weight: 500; }
.ar-author { font-size: 12px; color: var(--color-text-muted); }
.ar-read { font-size: 12px; color: var(--color-text-muted); }
@media (max-width: 700px) {
  .archive-row { grid-template-columns: 1fr auto; gap: 4px; }
  .ar-date, .ar-cat, .ar-author { grid-column: 1; font-size: 10px; }
  .ar-title { grid-column: 1; }
  .ar-read { grid-column: 2; grid-row: 1 / span 4; align-self: center; }
}

/* ════════════════════════════════════════════════════
   Post card (used everywhere)
   ════════════════════════════════════════════════════ */
.post-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 200ms;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  text-align: left;
}
.post-card:hover { transform: translateY(-3px); border-color: rgba(var(--hr), 0.5); }
.pc-cover-wrap { position: relative; }
.pc-format {
  position: absolute; top: 10px; right: 10px;
  font-size: 9px; letter-spacing: 0.2em; text-transform: uppercase;
  padding: 3px 8px;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(6px);
  color: var(--h);
  border-radius: 3px;
}
.pc-body { padding: var(--space-4); display: flex; flex-direction: column; gap: 10px; flex: 1; }
.pc-meta { font-size: 11px; color: var(--color-text-muted); display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.pc-cat { letter-spacing: 0.1em; font-weight: 600; }
.pc-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.pc-deck { font-size: 13px; color: var(--color-text-secondary); line-height: 1.55; flex: 1; }
.pc-foot { display: flex; justify-content: space-between; align-items: center; gap: var(--space-3); margin-top: 4px; }
.pc-tags { display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }

/* ════════════════════════════════════════════════════
   Tag chip + author byline
   ════════════════════════════════════════════════════ */
.tag-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 3px;
  background: rgba(var(--hr), 0.1);
  color: var(--h);
  border: 1px solid rgba(var(--hr), 0.25);
  cursor: pointer;
  white-space: nowrap;
}
.tag-chip.sm { font-size: 10px; padding: 2px 6px; }
.tag-chip:hover { background: rgba(var(--hr), 0.2); }

.author-byline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; border: none; cursor: pointer;
  color: var(--color-text-primary);
  padding: 2px 6px 2px 2px;
  border-radius: 999px;
  transition: all 150ms;
  font-family: var(--font-body);
}
.author-byline:hover { background: rgba(255,255,255,0.04); }
.ab-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
}
.ab-name { font-size: 13px; font-weight: 500; }
.ab-guest { font-size: 9px; padding: 1px 5px; background: rgba(255,255,255,0.06); border-radius: 3px; letter-spacing: 0.1em; color: var(--color-text-muted); }
.ab-date { font-size: 11px; color: var(--color-text-muted); margin-left: 4px; }
.author-byline.mini .ab-avatar { width: 22px; height: 22px; font-size: 9px; }
.author-byline.mini .ab-name { font-size: 12px; }

/* Hover preview card */
.post-hover-link { cursor: pointer; color: var(--color-brand); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; position: relative; }
.post-hover-card {
  position: fixed;
  z-index: 9999;
  display: flex;
  width: 320px;
  background: var(--color-bg-elevated);
  border: 1px solid rgba(var(--hr), 0.4);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  animation: phc-in 180ms ease-out;
  pointer-events: none;
  text-decoration: none;
  color: var(--color-text-primary);
  cursor: pointer;
}
@keyframes phc-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }
.phc-cover { width: 110px; flex-shrink: 0; }
.phc-cover .bc-wrap { border-radius: 0; border-right: 1px solid var(--color-border); border-top: 0; border-bottom: 0; border-left: 0; height: 100%; }
.phc-body { padding: 10px 12px; display: flex; flex-direction: column; gap: 4px; }
.phc-cat { font-size: 9px; letter-spacing: 0.15em; color: var(--h); }
.phc-title { font-family: var(--font-display); font-size: 13px; font-weight: 600; line-height: 1.3; }
.phc-meta { font-size: 10px; color: var(--color-text-muted); }

/* ════════════════════════════════════════════════════
   Blog POST (variants)
   ════════════════════════════════════════════════════ */
.blog-post { padding-bottom: var(--space-9); }
.bp-progress {
  position: fixed; top: 0; left: 0;
  height: 3px;
  z-index: 100;
  transition: width 100ms linear;
}

.bp-head { padding: var(--space-6) 0 var(--space-5); max-width: 800px; }
.bp-cat-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: var(--space-3); }
.bp-h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin-bottom: var(--space-4);
}
.bp-deck {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 400;
  color: var(--color-text-secondary);
  line-height: 1.5;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-5);
}
.bp-byline-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); padding-bottom: var(--space-5); border-bottom: 1px solid var(--color-border); }
.bp-read { font-size: 12px; color: var(--color-text-muted); margin-left: auto; }

/* Layout with TOC */
.bp-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-7);
  margin-top: var(--space-6);
}
@media (max-width: 900px) { .bp-layout { grid-template-columns: 1fr; } }

.bp-toc {
  position: sticky;
  top: 100px;
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}
@media (max-width: 900px) { .bp-toc { display: none; } }
.bp-toc-label { font-size: 11px; letter-spacing: 0.15em; color: var(--color-text-muted); margin-bottom: 12px; }
.bp-toc-list { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--color-border); }
.bp-toc-list li { padding: 6px 12px; font-size: 13px; transition: all 150ms; }
.bp-toc-list li a { color: var(--color-text-muted); text-decoration: none; display: block; }
.bp-toc-list li:hover a { color: var(--color-text-primary); }
.bp-toc-list li.active { border-left: 2px solid var(--h); margin-left: -1px; }
.bp-toc-list li.active a { color: var(--h); font-weight: 500; }

/* Prose */
.bp-prose {
  max-width: 720px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--color-text-primary);
}
html[data-blog-width="wide"] .bp-prose { max-width: 880px; }
.bp-prose h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
  scroll-margin-top: 90px;
}
.bp-prose section:first-child h2 { margin-top: 0; }
.bp-prose p { margin-bottom: var(--space-3); color: var(--color-text-secondary); }
.bp-prose ul, .bp-prose ol { margin: var(--space-3) 0 var(--space-4); padding-left: 28px; color: var(--color-text-secondary); }
.bp-prose li { margin-bottom: 6px; }
.bp-prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 2px 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border);
  border-radius: 3px;
}
.bp-prose sup a { color: var(--h); text-decoration: none; padding: 0 2px; }
.bp-prose strong { color: var(--color-text-primary); }
.bp-prose em { color: var(--color-text-primary); font-style: italic; }
.bp-prose hr.bp-rule { border: none; border-top: 1px dashed var(--color-border); margin: var(--space-7) 0; }

.bp-footnotes { list-style: none; padding: 0; margin-top: var(--space-5); font-size: 13px; color: var(--color-text-muted); }
.bp-footnotes li { display: flex; gap: 8px; margin-bottom: 8px; line-height: 1.5; }

/* Code block */
.bp-code {
  background: rgba(0,0,0,0.45);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: var(--space-4) 0;
  overflow: hidden;
}
.bp-code-bar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 14px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--color-border);
  font-size: 11px;
}
.bp-code-title { color: var(--color-text-primary); font-weight: 500; flex: 1; }
.bp-code-lang { color: var(--color-text-muted); margin-right: var(--space-3); }
.bp-code-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  color: var(--color-text-muted);
  cursor: pointer;
}
.bp-code-copy:hover { color: var(--color-brand); border-color: var(--color-brand); }
.bp-code pre { margin: 0; padding: 14px 18px; overflow-x: auto; font-size: 13px; line-height: 1.6; color: rgba(255,255,255,0.85); }

/* Pull quote */
.bp-pull {
  position: relative;
  padding: var(--space-4) var(--space-5);
  margin: var(--space-5) 0;
  border-left: 3px solid;
  background: rgba(255,255,255,0.02);
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.4;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.bp-pull.lg { font-size: 32px; padding: var(--space-6) var(--space-6); }
.bp-pull-mark { position: absolute; top: -8px; left: 12px; font-size: 60px; line-height: 1; font-family: serif; opacity: 0.5; }

.bp-timeline-table { width: 100%; border-collapse: collapse; margin: var(--space-3) 0 var(--space-4); }
.bp-timeline-table td { padding: 10px 12px; border-bottom: 1px solid var(--color-border); font-size: 14px; }
.bp-timeline-table td:first-child { width: 80px; color: var(--h); font-size: 12px; letter-spacing: 0.05em; }

/* ── Launch variant ─── */
.bp-launch-h1 { background: linear-gradient(135deg, var(--color-text-primary), var(--h)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.bp-launch-hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-5);
  margin: var(--space-5) 0 var(--space-6);
}
@media (max-width: 800px) { .bp-launch-hero { grid-template-columns: 1fr; } }
.bp-launch-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  align-self: stretch;
}
.bp-stat {
  padding: var(--space-4);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.bp-stat-n { font-family: var(--font-display); font-size: clamp(22px, 3vw, 32px); font-weight: 700; letter-spacing: -0.02em; }
.bp-stat-l { font-size: 10px; letter-spacing: 0.12em; color: var(--color-text-muted); margin-top: 4px; }

.bp-fg {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin: var(--space-4) 0;
}
@media (max-width: 600px) { .bp-fg { grid-template-columns: 1fr; } }
.bp-fg-item {
  padding: var(--space-4);
  background: rgba(var(--hr), 0.04);
  border: 1px solid rgba(var(--hr), 0.18);
  border-left: 3px solid var(--h);
  border-radius: var(--radius-sm);
}
.bp-fg-t { font-family: var(--font-display); font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.bp-fg-d { font-size: 13px; color: var(--color-text-secondary); line-height: 1.5; }
.bp-cta-row { display: flex; gap: var(--space-3); margin-top: var(--space-5); flex-wrap: wrap; }

/* ── Event variant ─── */
.bp-event-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  padding: var(--space-5);
  background: linear-gradient(135deg, rgba(var(--hr),0.08), transparent);
  border: 1px solid rgba(var(--hr),0.2);
  border-radius: var(--radius-lg);
  margin: var(--space-4) 0;
}
@media (max-width: 600px) { .bp-event-stats { grid-template-columns: repeat(2, 1fr); } }
.bp-series { font-size: 11px; letter-spacing: 0.15em; margin-top: var(--space-3); }

.bp-photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
  margin: var(--space-5) 0;
}
.bp-photo figcaption {
  display: flex; flex-direction: column; gap: 4px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.bp-photo-tag { font-size: 10px; letter-spacing: 0.15em; }

.bp-schedule {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin: var(--space-3) 0;
}
@media (max-width: 700px) { .bp-schedule { grid-template-columns: 1fr; } }
.bp-day {
  padding: var(--space-4);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.bp-day-h { font-size: 11px; letter-spacing: 0.15em; margin-bottom: var(--space-3); padding-bottom: var(--space-2); border-bottom: 1px solid var(--color-border); }
.bp-day-row { padding: 6px 0; font-size: 13px; color: var(--color-text-secondary); border-bottom: 1px dashed var(--color-border); }
.bp-day-row:last-child { border-bottom: none; }

/* ── Manifesto variant ─── */
.bp-manifesto { max-width: 720px; padding-top: var(--space-7); padding-bottom: var(--space-9); }
.bp-mf-head { padding-bottom: var(--space-5); border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-6); }
.bp-mf-meta { display: flex; gap: 8px; align-items: center; font-size: 11px; letter-spacing: 0.1em; color: var(--color-text-muted); margin-bottom: var(--space-3); }
.bp-mf-h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.0;
  background: linear-gradient(135deg, var(--color-text-primary) 30%, var(--h));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.bp-mf-body { font-family: var(--font-display); font-size: 19px; line-height: 1.7; color: var(--color-text-secondary); }
.bp-mf-lede {
  font-size: 24px;
  font-weight: 500;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
  line-height: 1.4;
  margin-bottom: var(--space-5);
}
.bp-mf-h2 { font-family: var(--font-display); font-size: 24px; font-weight: 600; color: var(--color-text-primary); margin: var(--space-6) 0 var(--space-3); letter-spacing: -0.02em; }
.bp-mf-body p { margin-bottom: var(--space-4); }
.bp-mf-list { list-style: none; padding: 0; }
.bp-mf-list li { padding: var(--space-2) 0; border-bottom: 1px dashed var(--color-border); }
.bp-mf-list li strong { color: var(--h); margin-right: 8px; font-family: var(--font-mono); font-weight: 600; }
.bp-mf-sign { font-style: italic; color: var(--color-text-muted); margin-top: var(--space-6); }
.bp-mf-cta { margin-top: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--color-border); }

.bp-related { margin-top: var(--space-9); padding-top: var(--space-7); border-top: 1px solid var(--color-border); }

/* ════════════════════════════════════════════════════
   Author page
   ════════════════════════════════════════════════════ */
.blog-author { padding-bottom: var(--space-9); position: relative; overflow: hidden; }
.ba-glow { position: absolute; top: 0; left: 0; right: 0; height: 600px; pointer-events: none; z-index: 0; }
.blog-author > .container { position: relative; z-index: 1; }

.ba-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--space-6);
  padding-top: var(--space-5);
}
@media (max-width: 1000px) { .ba-layout { grid-template-columns: 1fr; } }

.ba-sticky {
  position: sticky;
  top: 100px;
  padding: var(--space-5);
  background: var(--color-bg-surface);
  border: 1px solid rgba(var(--hr), 0.25);
  border-radius: var(--radius-lg);
  text-align: center;
}
@media (max-width: 1000px) { .ba-sticky { position: static; } }

.ba-avatar {
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  position: relative;
  margin: 0 auto var(--space-4);
  border: 2px solid rgba(var(--hr), 0.4);
  overflow: hidden;
}
.ba-avatar-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 8px 8px;
  pointer-events: none;
}
.ba-name { font-family: var(--font-display); font-size: 28px; font-weight: 600; letter-spacing: -0.02em; }
.ba-role { font-size: 12px; color: var(--color-text-muted); letter-spacing: 0.05em; margin: 4px 0 var(--space-3); }
.ba-guest { font-size: 9px; padding: 3px 8px; background: rgba(var(--hr), 0.15); color: var(--h); border-radius: 3px; letter-spacing: 0.15em; display: inline-block; margin-bottom: var(--space-3); }
.ba-bio { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; text-align: left; margin: var(--space-4) 0; }

.ba-meta { display: flex; flex-direction: column; gap: 8px; padding: var(--space-4) 0; border-top: 1px dashed var(--color-border); border-bottom: 1px dashed var(--color-border); margin: var(--space-4) 0; }
.ba-meta-row { display: flex; justify-content: space-between; font-size: 12px; }
.ba-meta-row span:first-child { color: var(--color-text-muted); letter-spacing: 0.05em; font-size: 10px; align-self: center; }
.ba-meta-row a { color: var(--h); text-decoration: none; }

.ba-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-2); margin-top: var(--space-3); }
.ba-stat-n { font-family: var(--font-display); font-size: 24px; font-weight: 700; color: var(--h); }
.ba-stat-l { font-size: 9px; letter-spacing: 0.12em; color: var(--color-text-muted); }

/* Stats row */
.ba-row-stats {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}
@media (max-width: 900px) { .ba-row-stats { grid-template-columns: 1fr; } }
.ba-card { padding: var(--space-5); }
.ba-card-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: var(--space-4); }
.ba-card-title { font-family: var(--font-display); font-size: 16px; font-weight: 600; }
.ba-card-meta { font-size: 11px; color: var(--color-text-muted); letter-spacing: 0.1em; }

/* Heatmap */
.ah-wrap { position: relative; padding-top: 16px; }
.ah-months { position: relative; height: 14px; font-size: 9px; color: var(--color-text-muted); letter-spacing: 0.05em; }
.ah-months span { position: absolute; }
.ah-grid { display: flex; gap: 2px; }
.ah-col { display: flex; flex-direction: column; gap: 2px; }
.ah-cell { width: 12px; height: 12px; border-radius: 2px; transition: all 100ms; }
.ah-cell:hover { transform: scale(1.4); cursor: pointer; }
.ah-legend { display: flex; align-items: center; gap: 4px; margin-top: var(--space-3); font-size: 10px; color: var(--color-text-muted); }
.ah-legend .ah-cell { width: 10px; height: 10px; }

/* Topic donut */
.td-wrap { display: flex; align-items: center; gap: var(--space-4); }
.td-svg { flex-shrink: 0; }
.td-num { fill: var(--color-text-primary); }
.td-legend { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.td-row { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.td-dot { width: 10px; height: 10px; border-radius: 2px; flex-shrink: 0; }
.td-k { flex: 1; }
.td-v { font-size: 12px; color: var(--color-text-muted); }

/* Sections */
.ba-section { margin-bottom: var(--space-7); }
.ba-section-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: var(--space-4); }
.ba-section-title { font-family: var(--font-display); font-size: 22px; font-weight: 600; letter-spacing: -0.01em; }
.ba-section-count { font-size: 11px; color: var(--color-text-muted); letter-spacing: 0.1em; }

/* Filters */
.ba-filters { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-4); padding: var(--space-3); background: var(--color-bg-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.ba-fg { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; }
.ba-fg-l { font-size: 10px; letter-spacing: 0.15em; color: var(--color-text-muted); margin-right: 4px; }
.ba-fg-opt {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 150ms;
}
.ba-fg-opt:hover { color: var(--color-text-primary); }
.ba-fg-opt.on { background: var(--h); color: #fff; border-color: var(--h); }

.ba-empty { padding: var(--space-7); text-align: center; color: var(--color-text-muted); border: 1px dashed var(--color-border); border-radius: var(--radius-md); }

/* Timeline */
.ba-timeline { display: flex; flex-direction: column; gap: var(--space-5); }
.ba-tl-year { display: grid; grid-template-columns: 80px 1fr; gap: var(--space-4); }
.ba-tl-y-label { font-family: var(--font-display); font-size: 24px; font-weight: 700; color: var(--h); position: sticky; top: 100px; align-self: start; letter-spacing: 0; }
.ba-tl-posts { display: flex; flex-direction: column; gap: var(--space-3); border-left: 1px solid var(--color-border); padding-left: var(--space-4); }
.ba-tl-post {
  position: relative;
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  color: var(--color-text-primary);
  transition: all 150ms;
}
.ba-tl-post:hover { border-color: rgba(var(--hr), 0.5); transform: translateX(4px); }
.ba-tl-bullet {
  position: absolute;
  left: -22px;
  top: 22px;
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 2px solid var(--color-bg-base);
}
.ba-tl-date { font-size: 11px; color: var(--color-text-muted); align-self: start; padding-top: 2px; }
.ba-tl-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 4px; font-size: 10px; letter-spacing: 0.1em; }
.ba-tl-cat { font-weight: 600; }
.ba-tl-fmt, .ba-tl-read { color: var(--color-text-muted); }
.ba-tl-title { font-family: var(--font-display); font-size: 16px; font-weight: 500; letter-spacing: -0.01em; line-height: 1.25; }
.ba-tl-tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 6px; }
@media (max-width: 700px) { .ba-tl-year { grid-template-columns: 1fr; } .ba-tl-y-label { position: static; } }

/* Talks */
.ba-talks { display: flex; flex-direction: column; gap: var(--space-2); }
.ba-talk { display: grid; grid-template-columns: 60px 1fr; gap: var(--space-3); padding: var(--space-3); border-bottom: 1px solid var(--color-border); }
.ba-talk-y { font-size: 14px; color: var(--color-text-muted); align-self: center; }
.ba-talk-event { font-size: 11px; letter-spacing: 0.1em; margin-bottom: 4px; }
.ba-talk-title { font-family: var(--font-display); font-size: 16px; font-weight: 500; letter-spacing: -0.01em; }

/* Projects */
.ba-projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-3); }
.ba-project {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: var(--space-4);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: all 150ms;
}
.ba-project:hover { border-color: rgba(var(--hr), 0.4); transform: translateY(-2px); }
.ba-proj-head { display: flex; align-items: center; gap: 8px; }
.ba-proj-icon { font-size: 16px; }
.ba-proj-name { font-size: 14px; font-weight: 600; }
.ba-proj-desc { font-size: 13px; color: var(--color-text-secondary); line-height: 1.5; flex: 1; }
.ba-proj-meta { display: flex; justify-content: space-between; font-size: 11px; color: var(--color-text-muted); }

/* Other authors */
.ba-others { margin-top: var(--space-9); padding-top: var(--space-7); border-top: 1px solid var(--color-border); }
.ba-others-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--space-3); margin-top: var(--space-4); }
.ba-other {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  color: var(--color-text-primary);
  transition: all 150ms;
}
.ba-other:hover { border-color: rgba(var(--hr), 0.4); transform: translateY(-2px); }
.ba-other-info { flex: 1; }
.ba-other-name { font-family: var(--font-display); font-size: 15px; font-weight: 600; }
.ba-other-role { font-size: 10px; color: var(--color-text-muted); letter-spacing: 0.05em; }
.ba-other-count { font-size: 11px; color: var(--h); letter-spacing: 0.05em; }