:root {
  --lab-bg: #f6f0e6;
  --lab-paper: #fbf7f0;
  --lab-paper-strong: #f3eadc;
  --lab-ink: #201812;
  --lab-muted: #6d5e53;
  --lab-amber: #c58a2a;
  --lab-amber-soft: rgba(197, 138, 42, 0.14);
  --lab-olive: #415346;
  --lab-border: rgba(74, 56, 39, 0.14);
  --lab-border-strong: rgba(74, 56, 39, 0.24);
  --lab-shadow: 0 18px 40px rgba(32, 24, 18, 0.08);
  --lab-radius-sm: 12px;
  --lab-radius-md: 22px;
  --lab-radius-lg: 34px;
  --lab-content: 1180px;
  --lab-reading: 760px;
  --lab-post-shell: 1360px;
  --lab-post-reading: 940px;
  --lab-post-aside: 250px;
  --lab-post-toc-top: 5.4rem;
  --lab-post-gap: clamp(2rem, 4vw, 4rem);
  --lab-post-overlap: clamp(3.4rem, 7vw, 5.8rem);
  --lab-serif: "Noto Serif SC", "Songti SC", "STSong", "Source Han Serif SC", serif;
  --lab-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --lab-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --lab-fast: 180ms;
  --lab-mid: 280ms;
}

html[data-user-color-scheme="dark"] {
  --lab-bg: #18120f;
  --lab-paper: #221a15;
  --lab-paper-strong: #2a211b;
  --lab-ink: #f3e7d9;
  --lab-muted: #c2b2a2;
  --lab-amber: #d4a24f;
  --lab-amber-soft: rgba(212, 162, 79, 0.14);
  --lab-olive: #9faf9b;
  --lab-border: rgba(243, 231, 217, 0.12);
  --lab-border-strong: rgba(243, 231, 217, 0.22);
  --lab-shadow: 0 20px 44px rgba(0, 0, 0, 0.28);
}

html,
body {
  background: radial-gradient(circle at top, rgba(197, 138, 42, 0.08), transparent 30%),
    url("/img/lab/texture-grain.svg"),
    linear-gradient(180deg, var(--lab-bg) 0%, var(--lab-paper) 100%);
  background-size: auto, 280px 280px, auto;
}

body {
  font-family: var(--lab-sans);
  color: var(--lab-ink);
  letter-spacing: 0.01em;
  line-height: 1.75;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--lab-ink);
  font-family: var(--lab-serif);
  font-weight: 700;
  letter-spacing: 0.01em;
}

p,
li {
  color: var(--lab-muted);
}

a {
  color: var(--lab-olive);
  transition: color var(--lab-fast) var(--lab-ease), opacity var(--lab-fast) var(--lab-ease), transform var(--lab-fast) var(--lab-ease);
}

a:hover {
  color: var(--lab-amber);
  text-decoration: none;
}

img {
  border-radius: var(--lab-radius-md);
}

::selection {
  background: var(--lab-amber-soft);
}

hr {
  border-top: 1px solid var(--lab-border);
}

#board {
  margin-top: -6rem;
  border-radius: 34px 34px 0 0;
  border: 1px solid var(--lab-border);
  background: linear-gradient(180deg, rgba(251, 247, 240, 0.96), rgba(246, 240, 230, 0.98));
  box-shadow: var(--lab-shadow);
  overflow: hidden;
}

html[data-user-color-scheme="dark"] #board {
  background: linear-gradient(180deg, rgba(34, 26, 21, 0.94), rgba(24, 18, 15, 0.98));
}

.lab-home-board {
  position: relative;
  margin-top: -8rem;
  isolation: isolate;
}

.lab-home-board::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8%;
  right: 8%;
  height: 8rem;
  transform: translateY(-58%);
  border-radius: 999px;
  background: radial-gradient(circle, rgba(244, 219, 168, 0.32) 0%, rgba(244, 219, 168, 0.1) 42%, transparent 74%);
  filter: blur(12px);
  pointer-events: none;
  z-index: 0;
}

.lab-home-board > .container {
  position: relative;
  z-index: 1;
}

.container,
.container-fluid,
.post-content,
.markdown-body {
  max-width: min(100%, var(--lab-content));
}

#navbar {
  backdrop-filter: blur(18px) saturate(1.1);
  background: rgba(32, 24, 18, 0.22);
  border-bottom: 1px solid transparent;
  transition: background var(--lab-mid) var(--lab-ease), border-color var(--lab-mid) var(--lab-ease), box-shadow var(--lab-mid) var(--lab-ease);
}

#navbar.is-scrolled {
  background: rgba(32, 24, 18, 0.86);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}

.lab-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: #fff;
}

.lab-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3.4rem;
  min-height: 3.4rem;
  border-radius: 1.35rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 249, 241, 0.1);
  font-family: var(--lab-serif);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.lab-brand-mark img {
  width: 2.2rem;
  height: 2.2rem;
  display: block;
  border-radius: 0.72rem;
}

.lab-brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.lab-brand-copy strong {
  font-size: 1.14rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.lab-brand-copy small {
  margin-top: 0.2rem;
  font-size: 0.72rem;
  color: rgba(255, 244, 230, 0.6);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#navbar .nav-link {
  color: rgba(255, 245, 232, 0.88);
}

#navbar .nav-link:hover,
#navbar .nav-link.active {
  color: #fff;
}

#banner,
.banner {
  min-height: calc(100svh - 1px);
}

#banner .mask {
  background: linear-gradient(180deg, rgba(20, 15, 12, 0.3), rgba(20, 15, 12, 0.58));
}

.banner-text--home {
  width: min(100%, var(--lab-content));
  margin: 0 auto;
  padding: 0 1.5rem;
}

.lab-hero {
  position: relative;
  max-width: 46rem;
  padding: clamp(1.8rem, 3vw, 2.8rem);
  border: 1px solid rgba(255, 244, 232, 0.14);
  border-radius: 2rem;
  background: linear-gradient(145deg, rgba(24, 18, 14, 0.86), rgba(24, 18, 14, 0.6));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(14px) saturate(1.06);
  color: #fff8f1;
  overflow: hidden;
}

.lab-hero::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 44%;
  height: 44%;
  background: radial-gradient(circle, rgba(244, 219, 168, 0.18), transparent 72%);
  pointer-events: none;
}

.lab-hero-eyebrow,
.lab-kicker {
  margin-bottom: 1rem;
  color: var(--lab-amber);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.lab-hero-title {
  margin: 0;
  color: #fff8f1;
  font-size: clamp(2.8rem, 5vw, 5.5rem);
  line-height: 1.01;
  max-width: 10ch;
  position: relative;
  z-index: 1;
}

.lab-hero-summary {
  margin: 1.6rem 0 0;
  max-width: 32rem;
  color: rgba(255, 244, 232, 0.88);
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
}

.lab-post-hero {
  position: relative;
  display: grid;
  justify-items: center;
  width: min(100%, 74rem);
  margin: 0 auto;
  padding: clamp(0.8rem, 2vw, 1.4rem) 1.5rem 0;
  text-align: center;
}

.lab-post-hero::before {
  content: "";
  position: absolute;
  top: 3.2rem;
  left: 50%;
  width: clamp(12rem, 20vw, 18rem);
  height: clamp(12rem, 20vw, 18rem);
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244, 219, 168, 0.16), transparent 74%);
  filter: blur(14px);
  pointer-events: none;
}

.lab-post-hero-kicker {
  margin: 0 0 1.15rem;
  color: rgba(255, 238, 212, 0.68);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 440ms var(--lab-ease), transform 440ms var(--lab-ease);
}

body.page-post .lab-post-hero-title {
  margin: 0 auto;
  color: #fff8f1;
  width: 50vw;
  max-width: 50vw;
  font-size: clamp(1.45rem, 1.8vw, 2.1rem);
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: 0;
  text-wrap: balance;
  text-shadow: 0 8px 20px rgba(0, 0, 0, 0.16);
  opacity: 0;
  transform: translateY(14px);
  filter: blur(8px);
  transition:
    opacity 520ms var(--lab-ease),
    transform 520ms var(--lab-ease),
    filter 520ms var(--lab-ease),
    text-shadow 520ms var(--lab-ease);
}

.lab-post-hero-dek {
  max-width: 31rem;
  margin: 1.35rem auto 0;
  color: rgba(255, 244, 232, 0.78);
  font-size: 0.94rem;
  line-height: 1.74;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 500ms var(--lab-ease), transform 500ms var(--lab-ease);
}

body.page-post .banner-text,
body.page-post .lab-post-hero,
body.page-post .lab-post-hero-kicker,
body.page-post .lab-post-hero-title,
body.page-post .lab-post-hero-dek {
  color: #fff8f1;
}

body.page-post .lab-post-hero-kicker {
  color: rgba(255, 238, 212, 0.72);
}

body.page-post .lab-post-hero-dek {
  color: rgba(255, 244, 232, 0.82);
}

body.page-post .lab-post-hero.is-ready .lab-post-hero-kicker,
body.page-post .lab-post-hero.is-ready .lab-post-hero-dek {
  opacity: 1;
  transform: translateY(0);
}

body.page-post .lab-post-hero.is-ready .lab-post-hero-title {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
  text-shadow: 0 16px 34px rgba(0, 0, 0, 0.2);
}

.lab-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
  position: relative;
  z-index: 1;
}

.lab-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: 0 1.3rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform var(--lab-fast) var(--lab-ease), box-shadow var(--lab-fast) var(--lab-ease), background var(--lab-fast) var(--lab-ease), color var(--lab-fast) var(--lab-ease);
}

.lab-button--primary {
  background: var(--lab-amber);
  color: #fffaf1;
  box-shadow: 0 12px 28px rgba(197, 138, 42, 0.28);
}

.lab-button--secondary {
  border-color: rgba(255, 244, 232, 0.18);
  background: rgba(255, 250, 241, 0.16);
  color: #fff8f1;
}

.lab-button:hover {
  transform: translateY(-2px);
}

.lab-button--primary:hover {
  color: #fffaf1;
  box-shadow: 0 16px 34px rgba(197, 138, 42, 0.34);
}

.lab-button--secondary:hover {
  color: #fff8f1;
  background: rgba(255, 250, 241, 0.2);
}

.lab-section {
  position: relative;
  padding: 4.5rem 0;
}

.lab-section + .lab-section {
  padding-top: 5.4rem;
  border-top: 0;
}

.lab-section + .lab-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(74, 56, 39, 0.18) 16%, rgba(74, 56, 39, 0.32) 50%, rgba(74, 56, 39, 0.18) 84%, transparent);
}

.lab-section + .lab-section::after {
  content: "";
  position: absolute;
  top: -0.36rem;
  left: 50%;
  width: 0.72rem;
  height: 0.72rem;
  margin-left: -0.36rem;
  border-radius: 50%;
  border: 1px solid rgba(197, 138, 42, 0.44);
  background: var(--lab-paper);
  box-shadow: 0 0 0 7px rgba(197, 138, 42, 0.08);
}

.lab-section-heading {
  max-width: 44rem;
  margin-bottom: 2rem;
}

.lab-section-heading h2 {
  margin-bottom: 0.9rem;
  font-size: clamp(1.8rem, 2.8vw, 3rem);
  line-height: 1.08;
}

.lab-section-heading p {
  margin-bottom: 0;
  font-size: 1rem;
}

.lab-featured {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 2rem;
  align-items: stretch;
}

.lab-home-bridge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 0.8rem 0 1rem;
  opacity: 0.92;
}

.lab-home-bridge-line {
  width: clamp(4.5rem, 10vw, 8rem);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(74, 56, 39, 0.28), rgba(197, 138, 42, 0.34), transparent);
}

.lab-home-bridge-mark {
  position: relative;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 1px solid rgba(74, 56, 39, 0.16);
  background: radial-gradient(circle at 50% 50%, rgba(197, 138, 42, 0.2), rgba(197, 138, 42, 0.04) 56%, transparent 58%);
  box-shadow: inset 0 0 0 0.4rem rgba(255, 255, 255, 0.2);
}

.lab-home-bridge-mark::before,
.lab-home-bridge-mark::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.lab-home-bridge-mark::before {
  inset: 0.72rem;
  background: rgba(197, 138, 42, 0.46);
}

.lab-home-bridge-mark::after {
  inset: 0.34rem;
  border: 1px dashed rgba(197, 138, 42, 0.26);
}

.lab-featured-media img,
.lab-post-item-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border: 1px solid var(--lab-border);
  box-shadow: var(--lab-shadow);
}

.lab-featured-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1rem 0;
}

.lab-featured-date,
.lab-post-item-meta,
.lab-timeline-item time {
  color: var(--lab-muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}

.lab-featured-content h3,
.lab-path h3,
.lab-post-item-content h3,
.evolution-stage h3,
.evolution-principles h3 {
  margin-bottom: 0.8rem;
  font-size: 2rem;
  line-height: 1.18;
}

.lab-featured-excerpt,
.lab-post-item-content p,
.lab-path p,
.lab-about-grid p {
  font-size: 1rem;
}

.lab-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.lab-chip {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--lab-border);
  background: var(--lab-paper-strong);
  color: var(--lab-olive);
  font-size: 0.9rem;
}

.lab-chip--link:hover {
  transform: translateY(-1px);
}

.lab-path-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.lab-path,
.lab-page-shell > .evolution-container > section,
.lab-post-header,
#toc,
#tocbot,
.toc-container,
.wl-card,
.wl-panel,
.wl-editor,
.wl-input {
  padding: 1.6rem;
  border-radius: var(--lab-radius-md);
  border: 1px solid var(--lab-border);
  background: rgba(251, 247, 240, 0.78);
  box-shadow: var(--lab-shadow);
}

html[data-user-color-scheme="dark"] .lab-path,
html[data-user-color-scheme="dark"] .lab-page-shell > .evolution-container > section,
html[data-user-color-scheme="dark"] .lab-post-header,
html[data-user-color-scheme="dark"] #toc,
html[data-user-color-scheme="dark"] #tocbot,
html[data-user-color-scheme="dark"] .toc-container,
html[data-user-color-scheme="dark"] .wl-card,
html[data-user-color-scheme="dark"] .wl-panel,
html[data-user-color-scheme="dark"] .wl-editor,
html[data-user-color-scheme="dark"] .wl-input {
  background: rgba(34, 26, 21, 0.76);
}

.lab-path-links {
  margin: 1.1rem 0 0;
  padding-left: 1.1rem;
}

.lab-path-links li + li {
  margin-top: 0.55rem;
}

.lab-recent-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.lab-post-item {
  position: relative;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 1.55rem;
  align-items: stretch;
  padding: 1.35rem;
  border: 1px solid var(--lab-border);
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(255, 251, 245, 0.92), rgba(246, 240, 230, 0.9));
  box-shadow: var(--lab-shadow);
  overflow: hidden;
}

.lab-post-item::before {
  content: "";
  position: absolute;
  top: 1rem;
  bottom: 1rem;
  left: 0;
  width: 5px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(197, 138, 42, 0.86), rgba(197, 138, 42, 0.26));
}

.lab-post-item::after {
  content: "";
  position: absolute;
  top: 1.1rem;
  right: 1.25rem;
  width: 4.8rem;
  height: 4.8rem;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 35%, rgba(197, 138, 42, 0.24) 0.2rem, transparent 0.24rem),
    radial-gradient(circle at 68% 32%, rgba(65, 83, 70, 0.2) 0.18rem, transparent 0.22rem),
    radial-gradient(circle at 54% 72%, rgba(197, 138, 42, 0.18) 0.22rem, transparent 0.28rem);
  opacity: 0.9;
  pointer-events: none;
}

.lab-post-item-media {
  display: block;
  overflow: hidden;
  border-radius: var(--lab-radius-md);
  height: 100%;
}

.lab-post-item-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.2rem 0 0.1rem;
}

.lab-post-item-content h3 {
  font-size: 1.45rem;
  margin-bottom: 0.35rem;
}

.lab-post-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 0.4rem;
}

.lab-post-item-meta > * {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0 0.72rem;
  border-radius: 999px;
  border: 1px solid var(--lab-border);
  background: rgba(255, 255, 255, 0.46);
}

.lab-section--recent::before {
  content: "";
  position: absolute;
  top: 1.6rem;
  right: 0;
  width: 10rem;
  height: 1px;
  background: linear-gradient(90deg, rgba(197, 138, 42, 0), rgba(197, 138, 42, 0.28), rgba(197, 138, 42, 0));
}

html[data-user-color-scheme="dark"] .lab-post-item {
  background: linear-gradient(135deg, rgba(42, 33, 27, 0.9), rgba(30, 23, 18, 0.92));
}

html[data-user-color-scheme="dark"] .lab-post-item-meta > * {
  background: rgba(255, 255, 255, 0.06);
}

.lab-about-grid {
  display: grid;
  gap: 1rem;
}

.lab-inline-link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  font-weight: 700;
}

.lab-listing {
  padding-top: 4.8rem;
}

.lab-category-grid,
.lab-tag-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.lab-category-card,
.lab-tag-card,
.lab-category-sidebar-group {
  border-radius: var(--lab-radius-md);
  border: 1px solid var(--lab-border);
  background: rgba(251, 247, 240, 0.82);
  box-shadow: var(--lab-shadow);
}

html[data-user-color-scheme="dark"] .lab-category-card,
html[data-user-color-scheme="dark"] .lab-tag-card,
html[data-user-color-scheme="dark"] .lab-category-sidebar-group {
  background: rgba(34, 26, 21, 0.78);
}

.lab-category-card {
  padding: 1.5rem;
}

.lab-category-card-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.lab-category-card-head h3 {
  margin: 0;
  font-size: 1.55rem;
}

.lab-category-card-copy {
  margin: 1rem 0;
}

.lab-category-card-posts,
.lab-category-sidebar-posts {
  display: grid;
  gap: 0.7rem;
}

.lab-category-card-posts a,
.lab-category-sidebar-posts a,
.lab-tag-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  border: 1px solid var(--lab-border);
  background: rgba(255, 253, 248, 0.72);
  color: var(--lab-ink);
}

html[data-user-color-scheme="dark"] .lab-category-card-posts a,
html[data-user-color-scheme="dark"] .lab-category-sidebar-posts a,
html[data-user-color-scheme="dark"] .lab-tag-card {
  background: rgba(42, 33, 27, 0.72);
}

.lab-category-card-posts a:hover,
.lab-category-sidebar-posts a:hover,
.lab-tag-card:hover {
  transform: translateY(-1px);
}

.lab-category-card-posts time,
.lab-tag-card-count,
.lab-category-sidebar-title span:last-child {
  color: var(--lab-muted);
  white-space: nowrap;
}

.lab-category-sidebar {
  display: grid;
  gap: 1rem;
}

.lab-category-sidebar-group {
  padding: 1rem;
}

.lab-category-sidebar-title {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--lab-border);
  color: var(--lab-ink);
  font-family: var(--lab-serif);
}

.lab-category-sidebar-posts a.is-active {
  border-color: var(--lab-amber);
  background: var(--lab-amber-soft);
}

.lab-tag-card-name {
  color: var(--lab-olive);
  font-weight: 700;
}

.lab-timeline {
  position: relative;
  padding-left: 2rem;
}

.lab-timeline::before {
  content: "";
  position: absolute;
  top: 0.6rem;
  bottom: 0.6rem;
  left: 0.4rem;
  width: 1px;
  background: var(--lab-border-strong);
}

.lab-timeline-year {
  position: relative;
  margin: 1.8rem 0 1rem;
}

.lab-timeline-year span {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0 0.75rem;
  border-radius: 999px;
  background: var(--lab-paper-strong);
  color: var(--lab-ink);
  font-weight: 700;
}

.lab-timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 1rem;
  padding: 0.5rem 0 1rem;
}

.lab-timeline-item::before {
  content: "";
  position: absolute;
  top: 0.8rem;
  left: -1.86rem;
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--lab-amber);
  box-shadow: 0 0 0 5px var(--lab-amber-soft);
}

.lab-timeline-entry {
  display: grid;
  gap: 0.7rem;
}

.lab-timeline-entry > a {
  color: var(--lab-ink);
  font-family: var(--lab-serif);
  font-size: 1.18rem;
}

.lab-timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.lab-page-content {
  max-width: min(100%, 980px);
  margin: 0 auto;
  padding: 4rem 0 1rem;
}

.lab-page-shell {
  display: grid;
  gap: 1.4rem;
}

.evolution-container {
  display: grid;
  gap: 1.4rem;
}

.evolution-intro h2,
.evolution-focus h3,
.evolution-timeline h3,
.evolution-principles h3 {
  margin-bottom: 1rem;
}

.evolution-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.evolution-stage {
  padding: 1.3rem;
  border-radius: var(--lab-radius-sm);
  background: var(--lab-paper);
  border: 1px solid var(--lab-border);
}

.evolution-stage p {
  margin-bottom: 0;
}

.evolution-timeline-header {
  max-width: 42rem;
  margin-bottom: 2rem;
}

.evolution-timeline-header > p:last-child {
  margin-bottom: 0;
}

.evolution-history {
  display: grid;
  gap: 2rem;
}

.evolution-era {
  display: grid;
  gap: 1.1rem;
}

.evolution-era + .evolution-era {
  padding-top: 1.8rem;
  border-top: 1px solid var(--lab-border);
}

.evolution-era-label {
  display: grid;
  gap: 0.55rem;
}

.evolution-era-label span {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 2rem;
  padding: 0 0.8rem;
  border-radius: 999px;
  background: var(--lab-amber-soft);
  color: var(--lab-amber);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.evolution-era-label h4 {
  margin: 0;
  color: var(--lab-ink);
  font-family: var(--lab-serif);
  font-size: 1.5rem;
}

.evolution-era-items {
  position: relative;
  display: grid;
  gap: 1.25rem;
  padding-left: 1.6rem;
}

.evolution-era-items::before {
  content: "";
  position: absolute;
  top: 0.2rem;
  bottom: 0.2rem;
  left: 0.35rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(197, 138, 42, 0.1), rgba(197, 138, 42, 0.34), rgba(74, 56, 39, 0.14));
}

.evolution-milestone {
  position: relative;
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 1.1rem;
  align-items: start;
}

.evolution-milestone::before {
  content: "";
  position: absolute;
  top: 0.55rem;
  left: -1.33rem;
  width: 0.82rem;
  height: 0.82rem;
  border-radius: 50%;
  background: var(--lab-amber);
  box-shadow: 0 0 0 5px var(--lab-amber-soft);
}

.evolution-milestone-date {
  color: var(--lab-amber);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.evolution-milestone-body {
  display: grid;
  gap: 0.45rem;
  padding: 0.05rem 0 1.15rem;
  border-bottom: 1px solid rgba(74, 56, 39, 0.1);
}

.evolution-milestone:last-child .evolution-milestone-body {
  padding-bottom: 0;
  border-bottom: 0;
}

.evolution-milestone-title {
  margin: 0;
  color: var(--lab-ink);
  font-family: var(--lab-serif);
  font-size: 1.22rem;
  line-height: 1.2;
}

.evolution-milestone-summary {
  margin: 0;
  color: var(--lab-muted);
}

.evolution-outlook {
  margin-top: 0.2rem;
  padding: 1.5rem;
  border-radius: var(--lab-radius-md);
  border: 1px solid rgba(197, 138, 42, 0.24);
  background: linear-gradient(135deg, rgba(197, 138, 42, 0.08), rgba(255, 255, 255, 0.26));
  box-shadow: var(--lab-shadow);
}

.evolution-outlook h4 {
  margin: 0 0 0.7rem;
  color: var(--lab-ink);
  font-family: var(--lab-serif);
  font-size: 1.35rem;
}

.evolution-outlook p {
  margin: 0;
}

html[data-user-color-scheme="dark"] .evolution-outlook {
  background: linear-gradient(135deg, rgba(197, 138, 42, 0.1), rgba(42, 33, 27, 0.78));
  border-color: rgba(197, 138, 42, 0.26);
}

.evolution-principles ul {
  margin: 0;
  padding-left: 1.2rem;
}

.evolution-principles li + li {
  margin-top: 0.6rem;
}

body.page-post #board-ctn.container {
  width: min(100%, var(--lab-post-shell));
  max-width: min(100%, var(--lab-post-shell));
}

body.page-post #banner,
body.page-post .banner {
  min-height: clamp(28rem, 68vh, 42rem);
}

body.page-post #banner .mask {
  background:
    linear-gradient(180deg, rgba(18, 14, 11, 0.18) 0%, rgba(18, 14, 11, 0.5) 42%, rgba(18, 14, 11, 0.84) 100%),
    linear-gradient(135deg, rgba(197, 138, 42, 0.12), transparent 38%);
}

body.page-post .banner-text {
  width: min(100%, calc(var(--lab-post-reading) + 10rem));
  margin: 0 auto;
  padding: clamp(6.6rem, 11vw, 8.6rem) 1.5rem clamp(5.4rem, 9vw, 7.6rem);
}

body.page-post #board {
  margin-top: calc(var(--lab-post-overlap) * -1);
  padding: 0 0 4rem;
  border: 0;
  border-radius: 2.8rem 2.8rem 0 0;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}

body.page-post .post-content {
  max-width: min(100%, var(--lab-post-shell));
  padding: 0 1.5rem 1rem;
}

.lab-post-header {
  margin: 1.8rem 0 2.2rem;
}

body.page-post .lab-post-intro {
  position: relative;
  z-index: 2;
  width: min(100%, calc(var(--lab-post-reading) - 1.75rem));
  margin: 0 auto 2.1rem;
  padding: 0.95rem 1.15rem 1.05rem;
  border-radius: 1.3rem;
  border: 1px solid rgba(74, 56, 39, 0.1);
  background:
    linear-gradient(135deg, rgba(255, 252, 247, 0.8), rgba(244, 235, 221, 0.9)),
    url("/img/lab/texture-grain.svg");
  box-shadow: 0 10px 24px rgba(32, 24, 18, 0.06);
  backdrop-filter: blur(14px);
}

html[data-user-color-scheme="dark"] body.page-post .lab-post-intro,
html[data-user-color-scheme="dark"] .page-post .lab-post-intro {
  background:
    linear-gradient(135deg, rgba(42, 33, 27, 0.84), rgba(31, 23, 18, 0.94)),
    url("/img/lab/texture-grain.svg");
}

.lab-post-header-meta .mt-3,
.lab-post-header-meta .mt-1,
.post-metas.my-3 {
  margin: 0 !important;
}

.lab-post-header-meta {
  display: grid;
  gap: 0.85rem;
}

.lab-post-meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.lab-post-summary {
  margin: 1.1rem 0 0;
  font-size: 1.02rem;
}

body.page-post .lab-post-summary {
  max-width: 33rem;
  margin-top: 0.7rem;
  color: var(--lab-ink);
  font-size: 0.94rem;
  line-height: 1.72;
}

body.page-post .post-metas.my-3 {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1rem;
}

body.page-post .post-metas .post-meta {
  margin-right: 0;
}

body.page-post .post-metas .post-meta a {
  display: inline-flex;
  align-items: center;
  margin: 0.15rem 0.45rem 0.15rem 0;
  padding: 0.1rem 0.55rem;
  border-radius: 999px;
  background: rgba(197, 138, 42, 0.1);
  color: var(--lab-olive);
  font-size: 0.88rem;
}

body.page-post .post-metas .post-meta a:last-child {
  margin-right: 0;
}

body.page-post #updated-time {
  width: fit-content;
  margin: 0 0 1.5rem;
}

body.page-post .lab-post-body-layout {
  display: grid;
  width: 100%;
  max-width: calc(var(--lab-post-reading) + var(--lab-post-aside) + var(--lab-post-gap));
  margin: 0 auto;
  grid-template-columns: minmax(0, 1fr) minmax(17.2rem, var(--lab-post-aside));
  gap: clamp(1.2rem, 2vw, 1.85rem);
  align-items: start;
}

body.page-post .lab-post-main {
  grid-column: 1;
  min-width: 0;
  width: 100%;
  justify-self: stretch;
}

body.page-post .lab-post-paper {
  position: relative;
  padding: clamp(1.6rem, 3vw, 2.8rem);
  border-radius: 2.2rem;
  border: 1px solid rgba(74, 56, 39, 0.12);
  background:
    linear-gradient(180deg, rgba(255, 252, 247, 0.97), rgba(248, 241, 232, 0.98)),
    url("/img/lab/texture-grain.svg");
  box-shadow: 0 18px 50px rgba(32, 24, 18, 0.08);
}

body.page-post .lab-post-paper::before {
  content: "";
  position: absolute;
  top: 1.1rem;
  left: 1.2rem;
  right: 1.2rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(197, 138, 42, 0.36), transparent);
  opacity: 0.72;
  pointer-events: none;
}

html[data-user-color-scheme="dark"] body.page-post .lab-post-paper,
html[data-user-color-scheme="dark"] .page-post .lab-post-paper {
  background:
    linear-gradient(180deg, rgba(37, 29, 24, 0.97), rgba(28, 21, 17, 0.98)),
    url("/img/lab/texture-grain.svg");
}

body.page-post .lab-post-tail {
  display: grid;
  gap: 1.2rem;
  margin-top: 1.6rem;
}

body.page-post .lab-post-divider {
  margin: 0.1rem 0 0;
}

body.page-post .lab-post-rail {
  position: -webkit-sticky;
  position: sticky;
  top: var(--lab-post-toc-top);
  grid-column: 2;
  align-self: start;
  justify-self: stretch;
  margin-left: 0;
  min-width: 17.2rem;
  height: fit-content;
  width: 100%;
  z-index: 4;
}

body.page-post .lab-post-sidebar {
  position: static;
  padding: 0;
}

body.page-post .lab-seo-header {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.post-content .markdown-body,
.markdown-body {
  color: var(--lab-ink);
  font-size: 1.03rem;
  line-height: 1.92;
}

.post-content .markdown-body p,
.post-content .markdown-body li,
.markdown-body p,
.markdown-body li {
  color: var(--lab-muted);
}

.post-content .markdown-body h1,
.post-content .markdown-body h2,
.post-content .markdown-body h3,
.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  margin-top: 2.4rem;
  margin-bottom: 1rem;
}

.markdown-body blockquote {
  margin: 1.8rem 0;
  padding: 1rem 1.2rem 1rem 1.4rem;
  border-left: 3px solid var(--lab-amber);
  background: rgba(197, 138, 42, 0.08);
  color: var(--lab-ink);
}

.markdown-body code {
  border-radius: 0.5rem;
  padding: 0.1em 0.35em;
  background: var(--lab-amber-soft);
  color: var(--lab-ink);
}

body.page-post .markdown-body figure.highlight,
body.page-post .markdown-body > pre {
  position: relative;
  margin: 1.55rem 0 1.85rem;
  border: 1px solid rgba(74, 56, 39, 0.14);
  border-radius: 0.9rem;
  background: linear-gradient(180deg, #221b15 0%, #1a140f 100%);
  box-shadow: 0 10px 22px rgba(24, 18, 14, 0.07);
  overflow: hidden;
}

body.page-post .markdown-body figure.highlight::before,
body.page-post .markdown-body > pre::before {
  content: "";
  display: block;
  height: 2rem;
  background:
    radial-gradient(circle at 0.95rem 50%, rgba(255, 226, 181, 0.38) 0 0.15rem, transparent 0.17rem),
    radial-gradient(circle at 1.55rem 50%, rgba(255, 226, 181, 0.22) 0 0.15rem, transparent 0.17rem),
    radial-gradient(circle at 2.15rem 50%, rgba(255, 226, 181, 0.1) 0 0.15rem, transparent 0.17rem),
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

body.page-post .markdown-body figure.highlight::after,
body.page-post .markdown-body > pre::after {
  content: "SNIPPET";
  position: absolute;
  top: 0.46rem;
  right: 0.82rem;
  color: rgba(255, 244, 232, 0.42);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

body.page-post .markdown-body figure.highlight.bash::after {
  content: "BASH";
}

.markdown-body pre,
.markdown-body .hljs {
  border-radius: var(--lab-radius-md);
  border: 1px solid var(--lab-border);
  background: rgba(34, 26, 21, 0.95);
}

body.page-post .markdown-body > pre {
  padding: 0;
}

body.page-post .markdown-body > pre code,
body.page-post .markdown-body > pre code.hljs {
  display: block;
  overflow-x: auto;
  background: transparent;
  color: #f6eee3;
  font-size: 0.93rem;
  line-height: 1.7;
  white-space: pre;
  padding: 0.95rem 1.05rem 1rem;
}

body.page-post .markdown-body figure.highlight {
  margin-left: 0;
  margin-right: 0;
}

body.page-post .markdown-body figure.highlight table {
  width: 100%;
  margin: 0;
  border-collapse: collapse;
}

body.page-post .markdown-body figure.highlight td {
  border: 0;
  padding: 0;
}

body.page-post .markdown-body figure.highlight td.gutter {
  width: 2.45rem;
  min-width: 2.45rem;
  background: rgba(255, 255, 255, 0.022);
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  vertical-align: top;
}

body.page-post .markdown-body figure.highlight td.gutter pre {
  margin: 0;
  padding: 0.95rem 0.45rem 1rem;
  background: transparent;
  box-shadow: none;
  border: 0;
  border-radius: 0;
}

body.page-post .markdown-body figure.highlight td.gutter pre::before,
body.page-post .markdown-body figure.highlight td.gutter pre::after {
  content: none;
}

body.page-post .markdown-body figure.highlight td.gutter pre span.line {
  color: rgba(255, 244, 232, 0.36);
  font-size: 0.72rem;
}

body.page-post .markdown-body figure.highlight td.code > pre {
  margin: 0;
  padding: 0.95rem 1.05rem 1rem;
  overflow-x: auto;
  background: transparent;
  color: #f6eee3;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

body.page-post .markdown-body figure.highlight td.code > pre .line,
body.page-post .markdown-body .hljs,
body.page-post .markdown-body .hljs span {
  color: inherit;
}

body.page-post .markdown-body .hljs-comment,
body.page-post .markdown-body .hljs-quote {
  color: rgba(255, 244, 232, 0.38);
}

body.page-post .markdown-body .hljs-keyword,
body.page-post .markdown-body .hljs-selector-tag,
body.page-post .markdown-body .hljs-literal {
  color: #f1c98b;
}

body.page-post .markdown-body .hljs-string,
body.page-post .markdown-body .hljs-number,
body.page-post .markdown-body .hljs-variable,
body.page-post .markdown-body .hljs-template-variable {
  color: #f4dcc1;
}

body.page-post .markdown-body .hljs-title,
body.page-post .markdown-body .hljs-built_in,
body.page-post .markdown-body .hljs-function,
body.page-post .markdown-body .hljs-name {
  color: #f5efe3;
}

body.page-post .markdown-body .hljs-operator,
body.page-post .markdown-body .hljs-punctuation {
  color: rgba(255, 244, 232, 0.72);
}

body.page-post .markdown-body > pre code::-webkit-scrollbar,
body.page-post .markdown-body figure.highlight td.code > pre::-webkit-scrollbar {
  height: 8px;
}

body.page-post .markdown-body > pre code::-webkit-scrollbar-thumb,
body.page-post .markdown-body figure.highlight td.code > pre::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(255, 244, 232, 0.14);
}

body.page-post .markdown-body > pre code::-webkit-scrollbar-track,
body.page-post .markdown-body figure.highlight td.code > pre::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.03);
}

.markdown-body img {
  border: 1px solid var(--lab-border);
  box-shadow: var(--lab-shadow);
}

body.page-post #toc,
body.page-post #tocbot,
body.page-post .toc-container {
  position: relative;
  top: auto;
  visibility: visible;
  width: 100%;
  box-sizing: border-box;
  padding: 0.85rem 0.8rem 0.75rem;
  border-radius: 1.15rem;
  border: 1px solid rgba(74, 56, 39, 0.14);
  background: rgba(251, 247, 240, 0.78);
  box-shadow: 0 10px 24px rgba(32, 24, 18, 0.08);
  backdrop-filter: blur(12px);
}

body.page-post #toc .toc-header {
  display: flex;
  align-items: center;
  gap: 0.38rem;
  margin-bottom: 0.58rem;
  padding-bottom: 0.52rem;
  border-bottom: 1px solid rgba(74, 56, 39, 0.08);
  color: var(--lab-ink);
  font-family: var(--lab-serif);
  font-weight: 700;
}

body.page-post #toc .toc-header span {
  font-size: 0.79rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

body.page-post #toc a,
body.page-post #tocbot a,
body.page-post .toc-container a {
  color: var(--lab-muted);
}

body.page-post #toc a:hover,
body.page-post #tocbot a:hover,
body.page-post .toc-container a:hover,
body.page-post .tocbot-active-link {
  color: var(--lab-olive) !important;
}

body.page-post #toc .tocbot-link:hover {
  color: var(--lab-ink) !important;
  background: rgba(197, 138, 42, 0.08);
}

body.page-post #toc .toc-body {
  max-height: calc(100vh - var(--lab-post-toc-top) - 2.4rem);
  padding-right: 0.22rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

body.page-post #toc .toc-list-item {
  display: grid;
  grid-template-columns: 1rem minmax(0, 1fr);
  gap: 0.26rem;
  align-items: start;
  padding: 0;
  overflow: visible;
  -webkit-line-clamp: initial;
}

body.page-post #toc .tocbot-link {
  display: block;
  grid-column: 2;
  padding: 0.2rem 0.42rem 0.2rem 0.54rem;
  border-left: 2px solid transparent;
  border-radius: 0.42rem;
  font-size: 0.79rem;
  line-height: 1.28;
  word-break: break-word;
  transition: color var(--lab-fast) var(--lab-ease), background var(--lab-fast) var(--lab-ease), border-color var(--lab-fast) var(--lab-ease);
}

body.page-post #toc .tocbot-list ol {
  grid-column: 2;
  padding-left: 0.42rem;
  margin: 0.02rem 0 0.06rem;
}

body.page-post #toc .tocbot-list ol .tocbot-link {
  font-size: 0.74rem;
  line-height: 1.24;
  opacity: 0.86;
}

body.page-post #toc .toc-fallback-item.toc-level-3 .tocbot-link {
  padding-left: 1.15rem;
}

body.page-post #toc .toc-fallback-item.toc-level-4 .tocbot-link {
  padding-left: 1.55rem;
}

body.page-post #toc .tocbot-active-link {
  border-left-color: rgba(197, 138, 42, 0.92);
  color: var(--lab-ink) !important;
  font-weight: 700;
  background: linear-gradient(90deg, rgba(197, 138, 42, 0.14), rgba(197, 138, 42, 0.03) 78%);
}

body.page-post #toc .toc-list-item.is-active-li > .tocbot-link {
  color: var(--lab-ink);
}

body.page-post #toc .toc-toggle {
  -webkit-appearance: none;
  appearance: none;
  grid-column: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  padding: 0;
  margin-top: 0.27rem;
  border: 0 !important;
  border-radius: 999px;
  background: transparent !important;
  box-shadow: none !important;
  outline: none;
  color: rgba(74, 56, 39, 0.7);
  font-size: 0.68rem;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  transition: color var(--lab-fast) var(--lab-ease), background var(--lab-fast) var(--lab-ease), transform var(--lab-fast) var(--lab-ease);
}

body.page-post #toc .toc-toggle:hover {
  color: var(--lab-ink);
  background: rgba(197, 138, 42, 0.12);
}

body.page-post #toc .toc-toggle.toc-toggle-collapsed {
  transform: rotate(0deg);
}

body.page-post #toc .toc-toggle.toc-toggle-expanded {
  transform: rotate(90deg);
}

body.page-post #toc .toc-toggle.toc-toggle-placeholder {
  visibility: hidden;
  pointer-events: none;
}

body.page-post #toc .toc-footer {
  margin-top: 0.5rem;
  padding-top: 0.48rem;
  border-top: 1px solid rgba(74, 56, 39, 0.08);
}

body.page-post #toc .toc-action {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  min-height: 1.9rem;
  border: 1px solid rgba(74, 56, 39, 0.16);
  border-radius: 0.58rem;
  background: rgba(255, 252, 247, 0.92);
  box-shadow: none;
  color: var(--lab-muted);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  transition: color var(--lab-fast) var(--lab-ease), border-color var(--lab-fast) var(--lab-ease), background var(--lab-fast) var(--lab-ease);
  cursor: pointer;
}

body.page-post #toc .toc-action:hover {
  color: var(--lab-ink);
  border-color: rgba(197, 138, 42, 0.46);
  background: rgba(197, 138, 42, 0.1);
}

html[data-user-color-scheme="dark"] body.page-post #toc,
html[data-user-color-scheme="dark"] .page-post #toc {
  border-color: rgba(243, 231, 217, 0.16);
  background: rgba(35, 27, 22, 0.88);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24);
}

html[data-user-color-scheme="dark"] body.page-post #toc .toc-header,
html[data-user-color-scheme="dark"] .page-post #toc .toc-header,
html[data-user-color-scheme="dark"] body.page-post #toc .toc-footer,
html[data-user-color-scheme="dark"] .page-post #toc .toc-footer {
  border-color: rgba(243, 231, 217, 0.12);
}

html[data-user-color-scheme="dark"] body.page-post #toc .toc-toggle,
html[data-user-color-scheme="dark"] .page-post #toc .toc-toggle {
  color: rgba(243, 231, 217, 0.62);
}

html[data-user-color-scheme="dark"] body.page-post #toc .toc-toggle:hover,
html[data-user-color-scheme="dark"] .page-post #toc .toc-toggle:hover {
  color: #f3e7d9;
  background: rgba(212, 162, 79, 0.2);
}

html[data-user-color-scheme="dark"] body.page-post #toc .tocbot-link:hover,
html[data-user-color-scheme="dark"] .page-post #toc .tocbot-link:hover {
  background: rgba(212, 162, 79, 0.14);
}

html[data-user-color-scheme="dark"] body.page-post #toc .toc-action,
html[data-user-color-scheme="dark"] .page-post #toc .toc-action {
  border-color: rgba(243, 231, 217, 0.2);
  background: rgba(42, 33, 27, 0.9);
}

html[data-user-color-scheme="dark"] body.page-post #toc .toc-action:hover,
html[data-user-color-scheme="dark"] .page-post #toc .toc-action:hover {
  border-color: rgba(212, 162, 79, 0.5);
  background: rgba(212, 162, 79, 0.2);
}

body.page-post .license-box,
body.page-post .post-prevnext,
body.page-post #comments {
  border: 1px solid var(--lab-border);
  border-radius: var(--lab-radius-md);
  background: rgba(251, 247, 240, 0.78);
  box-shadow: none;
}

body.page-post .license-box,
body.page-post .post-prevnext {
  padding: 1.15rem 1.25rem;
}

body.page-post #comments {
  margin-top: 0;
  padding: 1.25rem;
}

.pagination .page-link,
#scroll-top-button {
  border-radius: 999px;
  border: 1px solid var(--lab-border);
  background: rgba(251, 247, 240, 0.92);
  color: var(--lab-ink);
}

#scroll-top-button:hover,
.pagination .page-item.active .page-link {
  background: var(--lab-amber);
  color: #fff;
  border-color: var(--lab-amber);
}

.wl-btn {
  border-radius: 999px !important;
  border-color: var(--lab-amber) !important;
  background: var(--lab-amber-soft) !important;
  color: var(--lab-ink) !important;
}

.lab-footer {
  padding: 2.5rem 1rem 3rem;
}

.lab-footer-content {
  display: grid;
  gap: 0.7rem;
  justify-items: center;
  text-align: center;
}

.lab-footer-title {
  margin: 0;
  color: var(--lab-ink);
  font-family: var(--lab-serif);
  font-size: 1.1rem;
}

.lab-footer-text {
  margin: 0;
  max-width: 40rem;
}

.lab-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.kb-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 520ms var(--lab-ease), transform 520ms var(--lab-ease);
}

.kb-reveal.is-inview {
  opacity: 1;
  transform: translateY(0);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--lab-amber);
  outline-offset: 3px;
}

@media (max-width: 1199px) {
  #board {
    margin-top: -4rem;
  }

  .lab-featured,
  .lab-path-grid,
  .evolution-grid,
  .lab-category-grid,
  .lab-tag-grid {
    grid-template-columns: 1fr;
  }

  .lab-post-item {
    grid-template-columns: 180px minmax(0, 1fr);
  }

  body.page-post #board {
    margin-top: calc(var(--lab-post-overlap) * -0.72);
  }

  body.page-post .lab-post-body-layout {
    max-width: none;
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  body.page-post .lab-post-main {
    grid-column: auto;
    width: 100%;
  }

  body.page-post .lab-post-rail {
    position: static;
    order: -1;
    grid-column: auto;
    align-self: auto;
    justify-self: stretch;
    margin-left: 0;
    min-width: 0;
    width: 100%;
    right: auto;
    top: auto;
    z-index: auto;
  }

  body.page-post #toc,
  body.page-post #tocbot,
  body.page-post .toc-container {
    position: relative;
    top: 0;
  }
}

@media (max-width: 768px) {
  #banner,
  .banner {
    min-height: 86svh;
  }

  #board {
    margin-top: -2.5rem;
    border-radius: 28px 28px 0 0;
  }

  .lab-home-board {
    margin-top: -3.4rem;
  }

  .lab-brand-mark {
    min-width: 3.5rem;
    min-height: 3.5rem;
    font-size: 0.82rem;
  }

  .lab-brand-mark img {
    width: 2.28rem;
    height: 2.28rem;
  }

  .lab-brand-copy small {
    display: none;
  }

  .lab-section {
    padding: 3.2rem 0;
  }

  .lab-post-item,
  .evolution-milestone,
  .lab-timeline-item {
    grid-template-columns: 1fr;
  }

  .lab-hero {
    padding: 1.5rem;
    border-radius: 1.6rem;
  }

  .lab-home-bridge {
    margin: 0.3rem 0 0.8rem;
    gap: 0.8rem;
  }

  .lab-home-bridge-mark {
    width: 2.2rem;
    height: 2.2rem;
  }

  .lab-section + .lab-section {
    padding-top: 4.2rem;
  }

  .lab-post-item {
    gap: 1rem;
    padding: 1rem;
  }

  .evolution-era-items {
    padding-left: 1.2rem;
  }

  .evolution-milestone {
    gap: 0.45rem;
  }

  .evolution-milestone-date {
    display: inline-flex;
    width: fit-content;
    min-height: 1.8rem;
    padding: 0 0.65rem;
    border-radius: 999px;
    background: var(--lab-amber-soft);
  }

  .evolution-milestone-body {
    padding-bottom: 1rem;
  }

  .lab-category-card-posts a,
  .lab-tag-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .lab-post-item-media img {
    min-height: 220px;
  }

  .lab-page-content {
    padding-top: 2.8rem;
  }

  body.page-post #banner,
  body.page-post .banner {
    min-height: 32rem;
  }

  body.page-post .banner-text {
    padding: 5.8rem 1rem 4.8rem;
  }

  body.page-post #board {
    margin-top: -2rem;
    padding-bottom: 2.8rem;
  }

  body.page-post .post-content {
    padding: 0 1rem 1rem;
  }

  body.page-post .lab-post-intro,
  body.page-post .lab-post-paper,
  body.page-post #toc,
  body.page-post #tocbot,
  body.page-post .toc-container {
    padding: 1.25rem;
  }

  body.page-post .lab-post-intro {
    width: min(100%, 40rem);
    margin: 0 auto 1.6rem;
  }

  body.page-post .lab-post-hero-title {
    width: 72vw;
    max-width: 72vw;
    margin: 0 auto;
    font-size: clamp(1.22rem, 2.9vw, 1.68rem);
    line-height: 1.3;
    font-weight: 600;
  }

  body.page-post .lab-post-hero-dek {
    max-width: 28rem;
    font-size: 0.92rem;
  }
}

@media (max-width: 480px) {
  .lab-hero-title {
    font-size: 2.5rem;
  }

  .lab-hero-actions {
    flex-direction: column;
  }

  .lab-button {
    width: 100%;
  }

  .lab-home-bridge {
    gap: 0.6rem;
  }

  .lab-home-bridge-line {
    width: 3.2rem;
  }

  .lab-post-item {
    padding: 0.95rem;
    border-radius: 24px;
  }

  .evolution-era {
    gap: 0.9rem;
  }

  .evolution-era-label h4 {
    font-size: 1.28rem;
  }

  .evolution-outlook {
    padding: 1.2rem;
  }

  .lab-hero-summary,
  .lab-post-summary,
  .lab-post-item-content p,
  .lab-path p {
    font-size: 0.96rem;
  }

  .lab-path,
  .lab-page-shell > .evolution-container > section,
  .lab-post-header,
  #toc,
  #tocbot,
  .toc-container {
    padding: 1.2rem;
  }

  body.page-post #banner,
  body.page-post .banner {
    min-height: 28rem;
  }

  body.page-post .banner-text {
    padding: 5.2rem 1rem 4.2rem;
  }

  body.page-post .lab-post-hero-title {
    width: 88vw;
    max-width: 88vw;
    margin: 0 auto;
    font-size: 1.08rem;
    line-height: 1.36;
    font-weight: 600;
  }

  body.page-post .lab-post-hero-dek,
  body.page-post .lab-post-summary {
    font-size: 0.92rem;
  }

  body.page-post .lab-post-intro,
  body.page-post .lab-post-paper,
  body.page-post #toc,
  body.page-post #tocbot,
  body.page-post .toc-container {
    padding: 1.05rem;
  }

  body.page-post .lab-post-intro {
    width: 100%;
    margin: 0 auto 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .kb-reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}

.lab-section--daily .lab-daily-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.lab-daily-item {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding: 1.3rem 1.4rem;
  border: 1px solid var(--lab-border);
  border-radius: var(--lab-radius-md);
  background: rgba(255, 252, 247, 0.76);
  box-shadow: 0 12px 28px rgba(32, 24, 18, 0.06);
  transition: transform var(--lab-fast) var(--lab-ease), border-color var(--lab-fast) var(--lab-ease), box-shadow var(--lab-fast) var(--lab-ease);
}

.lab-daily-item:hover {
  transform: translateY(-3px);
  border-color: var(--lab-border-strong);
  box-shadow: 0 16px 32px rgba(32, 24, 18, 0.1);
}

html[data-user-color-scheme="dark"] .lab-daily-item {
  background: rgba(36, 28, 23, 0.9);
}

.lab-daily-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--lab-muted);
}

.lab-daily-item h3 {
  margin: 0;
  font-size: 1.26rem;
  line-height: 1.45;
}

.lab-daily-item p {
  margin: 0;
  font-size: 0.97rem;
}

@media (max-width: 991.98px) {
  .lab-section--daily .lab-daily-list {
    grid-template-columns: 1fr;
  }
}