:root {
  color-scheme: light;
  --bg: #f6f1ea;
  --bg-elevated: #fffaf4;
  --bg-strong: #0f141b;
  --bg-strong-soft: rgba(17, 22, 29, 0.72);
  --line: rgba(20, 24, 31, 0.12);
  --line-soft: rgba(255, 255, 255, 0.18);
  --ink: #17191d;
  --ink-soft: #636a75;
  --ink-inverse: #f7f3ec;
  --accent: #b8844d;
  --accent-deep: #8f6030;
  --shadow: 0 26px 80px rgba(13, 17, 23, 0.16);
  --radius-sm: 14px;
  --radius-md: 24px;
  --radius-lg: 32px;
  --shell-width: min(1180px, calc(100% - 48px));
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, "SF Pro Text", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, sans-serif;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

body::selection {
  background: rgba(184, 132, 77, 0.22);
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(184, 132, 77, 0.5);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 18px;
  top: 18px;
  z-index: 100;
  transform: translateY(-140%);
  padding: 10px 14px;
  border-radius: 999px;
  background: #fffaf4;
  color: var(--ink);
  font-weight: 800;
  box-shadow: 0 14px 30px rgba(17, 22, 29, 0.18);
  transition: transform 160ms ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

img {
  display: block;
  max-width: 100%;
}

:where(h1, h2, h3, h4) {
  margin: 0;
  font-family:
    "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Noto Serif SC", "Songti SC",
    serif;
  font-weight: 700;
  letter-spacing: 0;
}

p {
  margin: 0;
}

code,
pre {
  font-family:
    "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.shell {
  width: var(--shell-width);
  margin: 0 auto;
}

.site-header {
  z-index: 30;
}

.header-frame {
  padding-top: 22px;
}

.nav {
  min-height: 62px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: rgba(19, 24, 31, 0.58);
  backdrop-filter: blur(24px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
}

body.home-page .site-header {
  position: absolute;
  inset: 0 0 auto;
}

body.inner-page .site-header {
  position: sticky;
  top: 0;
  padding-bottom: 10px;
  background: linear-gradient(180deg, rgba(246, 241, 234, 0.96), rgba(246, 241, 234, 0.72));
  backdrop-filter: blur(12px);
}

body.inner-page .nav {
  background: rgba(16, 21, 28, 0.92);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink-inverse);
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: contain;
  padding: 5px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
}

.brand-text {
  white-space: nowrap;
}

.nav-links {
  display: inline-flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  color: rgba(247, 243, 236, 0.84);
  font-size: 0.96rem;
}

.nav-links a {
  position: relative;
  padding: 6px 0;
}

.nav-links a[aria-current='page'] {
  color: #ffffff;
}

.nav-links a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  border-radius: 999px;
  background: rgba(255, 250, 244, 0.92);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.light {
  background: var(--bg-elevated);
  color: var(--ink);
  box-shadow: 0 10px 22px rgba(8, 10, 12, 0.12);
}

.button.light:hover {
  background: #ffffff;
}

.button.ghost {
  border-color: rgba(255, 255, 255, 0.46);
  background: transparent;
  color: var(--ink-inverse);
}

.button.ghost:hover {
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.06);
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
  backdrop-filter: blur(14px);
}

.button.secondary:hover {
  border-color: rgba(184, 132, 77, 0.32);
  color: var(--accent-deep);
  background: rgba(255, 255, 255, 0.84);
}

.button.primary {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--ink-inverse);
  box-shadow: 0 12px 28px rgba(17, 22, 29, 0.16);
}

.button.primary:hover {
  background: #2b313a;
}

.home-main {
  overflow: clip;
}

.hero-scene {
  position: relative;
  min-height: 920px;
  padding: 154px 0 76px;
  background: var(--bg-strong);
  color: var(--ink-inverse);
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  filter: saturate(1.06) brightness(0.9) contrast(1.03);
}

.hero-frame {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 48px;
  min-height: calc(920px - 230px);
}

.hero-copy {
  max-width: 760px;
  padding-top: 42px;
}

.hero-copy h1 {
  font-size: clamp(3.7rem, 7vw, 5.8rem);
  line-height: 0.96;
  white-space: nowrap;
}

.hero-copy h1 span {
  display: inline;
  white-space: nowrap;
}

.hero-copy p {
  max-width: 560px;
  margin-top: 24px;
  font-size: clamp(1.12rem, 1.9vw, 1.42rem);
  color: rgba(247, 243, 236, 0.9);
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 38px;
}

.featured-story {
  display: grid;
  grid-template-columns: minmax(230px, 280px) minmax(0, 1fr);
  gap: 26px;
  align-items: center;
  min-width: 0;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  background: rgba(14, 18, 24, 0.68);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.featured-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-media {
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: 22px;
}

.featured-content {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.featured-kicker,
.journey-note-label,
.post-meta {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.featured-kicker {
  color: rgba(255, 244, 233, 0.74);
}

.featured-content h2 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  line-height: 1.08;
}

.featured-content h2 a:hover {
  color: #ffffff;
}

.featured-content p {
  max-width: 780px;
  color: rgba(247, 243, 236, 0.74);
}

.featured-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  color: rgba(247, 243, 236, 0.7);
}

.journey-note {
  background: linear-gradient(180deg, rgba(255, 250, 244, 0.92), rgba(245, 238, 230, 0.94));
  border-bottom: 1px solid rgba(20, 24, 31, 0.08);
}

.journey-note-inner {
  min-height: 104px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
}

.journey-note-label {
  color: var(--ink-soft);
}

.journey-note-inner p {
  color: #464c55;
  font-size: 1.12rem;
}

.journey-note-link {
  color: var(--ink-soft);
  font-weight: 600;
}

.journey-note-link:hover {
  color: var(--accent-deep);
}

.product-overview {
  padding: 54px 0 16px;
}

.metric-strip,
.start-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin: 24px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.metric-strip div,
.start-stats div {
  padding: 18px;
  background: rgba(255, 250, 244, 0.82);
}

.metric-strip dt,
.start-stats dt {
  color: var(--ink);
  font-size: clamp(1.75rem, 4vw, 2.7rem);
  font-weight: 900;
  line-height: 1;
}

.metric-strip dd,
.start-stats dd {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 700;
}

.product-path-grid,
.track-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.product-path-card,
.track-card {
  display: grid;
  gap: 12px;
  min-height: 212px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 250, 244, 0.9), rgba(239, 246, 244, 0.82)),
    #fffaf4;
  box-shadow: 0 16px 42px rgba(17, 22, 29, 0.07);
}

.interactive-card {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.interactive-card:hover,
.interactive-card:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(184, 132, 77, 0.42);
  box-shadow: 0 24px 58px rgba(17, 22, 29, 0.13);
  animation: card-wiggle 360ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.interactive-card:focus-visible {
  outline: 3px solid rgba(74, 128, 146, 0.34);
  outline-offset: 4px;
}

.card-cta {
  align-self: end;
  color: var(--ink);
  font-weight: 900;
}

.interactive-card:hover .card-cta,
.interactive-card:focus-visible .card-cta,
.interactive-card:hover h2,
.interactive-card:focus-visible h2,
.interactive-card:hover h3,
.interactive-card:focus-visible h3 {
  color: var(--accent-deep);
}

.product-path-card span,
.track-card > span,
.video-meta span {
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-path-card h3,
.track-card h3 {
  font-size: 1.45rem;
  line-height: 1.15;
}

.product-path-card p,
.track-card p {
  color: var(--ink-soft);
}

.product-path-card:hover h3,
.text-link:hover {
  color: var(--accent-deep);
}

.section {
  padding: 72px 0 88px;
}

.article-section {
  position: relative;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 26px;
}

.section-heading p {
  max-width: 560px;
  margin-top: 10px;
  color: var(--ink-soft);
}

.section-heading h2,
.page-hero h1,
.article-hero h1,
.prose h1 {
  font-size: clamp(2.3rem, 4vw, 3.7rem);
  line-height: 1.02;
}

.post-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.post-row {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  border-radius: 8px;
  transition:
    background 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
  will-change: transform;
}

.post-row.is-hidden {
  display: none;
}

.post-row-media {
  display: block;
}

.post-row-media-frame {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: 22px;
  box-shadow: 0 18px 44px rgba(17, 22, 29, 0.12);
}

.post-row-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 180ms ease;
}

.post-row-media:hover .post-row-thumb {
  transform: translateY(-2px);
}

.post-row:hover,
.post-row:focus-within {
  background: rgba(255, 250, 244, 0.72);
  box-shadow: 0 18px 46px rgba(17, 22, 29, 0.08);
  animation: card-wiggle 360ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.post-row-main {
  display: grid;
  gap: 14px;
}

.post-row-meta-line {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.post-level,
.level-label {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border: 1px solid rgba(74, 128, 146, 0.18);
  border-radius: 999px;
  background: rgba(74, 128, 146, 0.09);
  color: #3e6572;
  font-size: 0.76rem;
  font-weight: 800;
  line-height: 1;
}

.post-row-copy h3 {
  font-size: clamp(1.42rem, 2vw, 1.88rem);
  line-height: 1.12;
}

.post-row-copy h3 a:hover {
  color: var(--accent-deep);
}

.post-row-copy p {
  margin-top: 12px;
  max-width: 720px;
  color: var(--ink-soft);
}

.post-row-side {
  display: grid;
  justify-items: end;
  gap: 18px;
  min-width: 180px;
}

.post-row-link {
  color: var(--ink);
  font-weight: 600;
}

.post-row-link:hover {
  color: var(--accent-deep);
}

.post-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.84rem;
  line-height: 1;
}

.tag.soft {
  background: rgba(184, 132, 77, 0.12);
  color: #6d5439;
}

.tag.dark {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 243, 230, 0.88);
  border-color: rgba(255, 255, 255, 0.1);
}

.page-shell {
  padding: 48px 0 92px;
}

.page-hero,
.article-hero {
  padding: 28px 0 36px;
}

.page-hero p,
.article-hero .description {
  max-width: 720px;
  margin-top: 16px;
  color: var(--ink-soft);
  font-size: 1.06rem;
}

.page-section {
  padding-top: 14px;
}

.search-panel {
  margin: 0 0 24px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 250, 244, 0.72);
}

.search-panel label {
  display: block;
  margin-bottom: 10px;
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.search-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
}

.search-box input {
  width: 100%;
  min-height: 52px;
  padding: 0 18px;
  border: 1px solid rgba(20, 24, 31, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font: inherit;
  outline: none;
}

.search-box input:focus {
  border-color: rgba(184, 132, 77, 0.62);
  box-shadow: 0 0 0 4px rgba(184, 132, 77, 0.12);
}

.search-box span,
.empty-search {
  color: var(--ink-soft);
  font-weight: 700;
}

.empty-search {
  margin-top: 24px;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--accent-deep);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.roadmap-hero {
  max-width: 860px;
}

.roadmap-start-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.roadmap-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.roadmap-summary article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 250, 244, 0.76);
}

.roadmap-summary strong {
  display: block;
  color: var(--accent-deep);
  font-family:
    "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Noto Serif SC", "Songti SC",
    serif;
  font-size: 2.45rem;
  line-height: 1;
}

.roadmap-summary span {
  display: block;
  margin-top: 8px;
  color: var(--ink-soft);
}

.roadmap-section {
  padding-top: 42px;
}

.future-stage-directory article {
  align-content: start;
}

.future-stage-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.future-stage-topics li {
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.future-stage-outcome {
  grid-column: 2 / -1;
  margin-top: 8px;
}

.future-stage-directory article > em,
.stage-status-line span {
  display: inline-flex;
  width: fit-content;
  min-height: 28px;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(184, 132, 77, 0.12);
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-style: normal;
  font-weight: 900;
}

.learning-stages {
  border-top: 1px solid var(--line);
}

.learning-stage {
  padding: 38px 0 44px;
  border-bottom: 1px solid var(--line);
}

.learning-stage-header {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  max-width: 900px;
}

.stage-number {
  color: var(--accent-deep);
  font-family:
    "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Noto Serif SC", "Songti SC",
    serif;
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1;
}

.stage-heading-line {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.stage-heading-line h2,
.stage-heading-line h3,
.learning-stage-header h3 {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  line-height: 1.12;
}

.learning-stage-header p {
  max-width: 720px;
  margin-top: 8px;
  color: var(--ink-soft);
}

.stage-contract {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  padding: 14px 16px;
  border: 1px solid rgba(74, 128, 146, 0.18);
  border-radius: 8px;
  background: rgba(239, 246, 244, 0.58);
}

.stage-contract p {
  max-width: 860px;
  margin: 0;
}

.stage-contract strong,
.learning-outcome strong,
.learning-mode strong,
.future-stage-outcome b {
  color: var(--ink);
}

.stage-status-line {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.lesson-list.compact {
  margin-left: 90px;
}

.section-directory {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.section-directory article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  column-gap: 14px;
  align-items: baseline;
  padding: 22px 18px 22px 0;
  border-bottom: 1px solid var(--line);
}

.section-directory article:nth-child(odd) {
  padding-right: 28px;
}

.section-directory article:nth-child(even) {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.section-directory article > span,
.section-directory article > strong {
  color: var(--accent-deep);
  font-size: 0.8rem;
  font-weight: 800;
}

.section-directory h3 {
  font-size: 1.15rem;
}

.section-directory p {
  grid-column: 2 / -1;
  margin-top: 5px;
  color: var(--ink-soft);
}

.graduation-grid,
.route-preview-grid,
.summary-system {
  display: grid;
  gap: 14px;
}

.graduation-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.route-preview-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.graduation-grid article,
.route-preview-panel,
.summary-stage-card {
  display: grid;
  gap: 12px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 244, 0.76);
  box-shadow: 0 14px 40px rgba(17, 22, 29, 0.06);
}

.route-preview-panel {
  align-content: start;
}

.route-preview-panel a {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.route-preview-panel a:first-of-type {
  border-top: 0;
}

.route-preview-panel a em {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-style: normal;
  font-weight: 800;
}

.graduation-grid article > span,
.route-preview-panel a span,
.summary-stage-card > div > span {
  color: var(--accent-deep);
  font-size: 0.82rem;
  font-weight: 900;
}

.graduation-grid article h3,
.route-preview-panel h3,
.summary-stage-card h2 {
  font-size: 1.18rem;
  line-height: 1.25;
}

.graduation-grid article p,
.route-preview-panel p,
.summary-stage-card p,
.summary-stage-card li {
  color: var(--ink-soft);
}

.summary-stage-card {
  grid-template-columns: minmax(220px, 0.72fr) minmax(0, 1fr);
  gap: 22px;
}

.summary-stage-body {
  display: grid;
  gap: 10px;
}

.summary-stage-body h3 {
  font-size: 1.02rem;
}

.summary-stage-body ul {
  margin: 0;
  padding-left: 20px;
}

.roadmap-review-note {
  margin-top: 30px;
}

.section-jump-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 24px 0 46px;
}

.section-jump-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.42);
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 700;
}

.section-jump-nav a:hover {
  border-color: rgba(184, 132, 77, 0.36);
  color: var(--accent-deep);
}

.content-section-list {
  display: grid;
  gap: 64px;
}

.content-section {
  scroll-margin-top: 110px;
}

.content-section.search-hidden {
  display: none;
}

.content-section-header {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  margin-bottom: 18px;
}

.content-section-header > span {
  color: var(--accent-deep);
  font-family:
    "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Noto Serif SC", "Songti SC",
    serif;
  font-size: 1.45rem;
  font-weight: 700;
}

.content-section-header h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.15rem);
  line-height: 1.1;
}

.content-section-header p {
  margin-top: 7px;
  color: var(--ink-soft);
}

.content-section-header > strong {
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.section-empty {
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
}

.lesson-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
}

.lesson-list li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 250, 244, 0.78);
}

.lesson-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: rgba(184, 132, 77, 0.13);
  color: var(--accent-deep);
  font-weight: 800;
}

.lesson-list a {
  font-size: 1.2rem;
  font-weight: 800;
}

.lesson-list a:hover {
  color: var(--accent-deep);
}

.lesson-list p {
  margin-top: 6px;
  color: var(--ink-soft);
}

.calendar-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.calendar-list article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 250, 244, 0.68);
}

.calendar-list .update-status {
  display: inline-flex;
  width: fit-content;
  padding: 4px 10px;
  border: 1px solid rgba(137, 90, 48, 0.22);
  border-radius: 999px;
  background: rgba(246, 241, 234, 0.74);
  color: var(--accent-deep);
  font-size: 0.82rem;
  font-weight: 800;
}

.calendar-list span:not(.update-status) {
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 700;
}

.calendar-list h3 {
  margin: 8px 0 12px;
  color: var(--ink);
  font-family:
    Inter, "SF Pro Text", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.45;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding-top: 12px;
}

.topic-card {
  display: grid;
  gap: 14px;
  min-height: 280px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(150deg, rgba(255, 250, 244, 0.88), rgba(238, 244, 244, 0.74)),
    radial-gradient(circle at 92% 8%, rgba(74, 128, 146, 0.12), transparent 32%);
  box-shadow: 0 18px 46px rgba(17, 22, 29, 0.08);
}

.topic-card > span,
.topic-card-meta strong,
.related-reading-card span {
  color: var(--accent-deep);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.topic-card h2 {
  font-size: clamp(1.55rem, 2.2vw, 2rem);
  line-height: 1.1;
}

.topic-card h2 a:hover,
.topic-card-link:hover,
.related-reading-card:hover strong {
  color: var(--accent-deep);
}

.topic-card:hover .topic-card-link,
.topic-card:focus-visible .topic-card-link {
  color: var(--accent-deep);
}

.topic-card p,
.topic-card-meta small,
.related-reading > div > p,
.related-reading-card p {
  color: var(--ink-soft);
}

.topic-card-meta {
  display: grid;
  gap: 6px;
  align-self: end;
}

.topic-card-link {
  align-self: end;
  font-weight: 800;
}

.topic-detail-hero .post-tags {
  margin-top: 22px;
}

.article-shell {
  max-width: 1180px;
}

.article-hero {
  border-bottom: 1px solid var(--line);
}

.article-meta-line {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.article-meta-line span {
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 700;
}

.article-meta-line span::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  margin: 0 10px 2px 0;
  border-radius: 999px;
  background: rgba(184, 132, 77, 0.58);
}

.article-hero .post-tags {
  margin-top: 20px;
}

.article-route-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--accent-deep);
  font-size: 0.9rem;
  font-weight: 800;
}

.article-route-link:hover {
  color: var(--ink);
}

.article-cover {
  margin: 30px 0 0;
}

.article-cover-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: 28px;
  box-shadow: 0 22px 60px rgba(17, 22, 29, 0.12);
}

.article-cover-lesson-badge,
.video-lesson-badge {
  position: absolute;
  z-index: 2;
  left: 14px;
  top: 14px;
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid rgba(255, 250, 244, 0.34);
  border-radius: 999px;
  background: rgba(21, 25, 31, 0.78);
  color: #fffaf4;
  box-shadow: 0 12px 30px rgba(17, 22, 29, 0.2);
  font-size: 0.82rem;
  font-weight: 900;
  line-height: 1;
  backdrop-filter: blur(10px);
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 42px;
  align-items: start;
  min-width: 0;
}

.article-toc {
  position: sticky;
  top: 96px;
  order: 2;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 250, 244, 0.72);
}

.article-toc strong {
  display: block;
  margin-bottom: 12px;
  color: var(--ink);
}

.article-toc nav {
  display: grid;
  gap: 8px;
}

.article-toc a {
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.article-toc a:hover {
  color: var(--accent-deep);
}

.article-toc .toc-depth-3 {
  padding-left: 14px;
}

.prose {
  width: min(780px, 100%);
  margin: 0;
}

.prose-page {
  padding-top: 6px;
}

.article-prose {
  order: 1;
  min-width: 0;
  padding-top: 34px;
}

.lesson-video {
  margin: 2rem 0 2.4rem;
}

.lesson-video video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(23, 25, 29, 0.14);
  border-radius: 8px;
  background: #17191d;
  box-shadow: 0 18px 48px rgba(17, 22, 29, 0.14);
}

.lesson-video figcaption {
  margin-top: 0.7rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
  text-align: center;
}

.prose p,
.prose li {
  color: #2c3138;
}

.prose p + p,
.prose ul,
.prose ol,
.prose blockquote,
.prose pre,
.prose h2,
.prose h3 {
  margin-top: 1.4em;
}

.prose h2 {
  font-size: clamp(1.58rem, 2.2vw, 2rem);
  line-height: 1.14;
}

.prose h3 {
  font-size: clamp(1.22rem, 1.8vw, 1.52rem);
  line-height: 1.18;
}

.prose a {
  color: var(--accent-deep);
  text-decoration: underline;
  text-decoration-color: rgba(143, 96, 48, 0.28);
  text-underline-offset: 0.2em;
}

.prose code {
  padding: 0.14em 0.38em;
  border-radius: 8px;
  background: rgba(17, 22, 29, 0.06);
  font-size: 0.92em;
}

.prose pre {
  position: relative;
  overflow-x: auto;
  padding: 48px 18px 18px;
  border-radius: 18px;
  background: #11161d;
  color: #f7f3ec;
  box-shadow: 0 18px 44px rgba(17, 22, 29, 0.14);
}

.copy-code-button {
  position: absolute;
  top: 12px;
  right: 12px;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(247, 243, 236, 0.88);
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.copy-code-button:hover,
.copy-code-button.is-copied {
  border-color: rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

.prose pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.prose blockquote {
  padding: 8px 0 8px 20px;
  border-left: 3px solid rgba(184, 132, 77, 0.46);
  color: var(--ink-soft);
}

.lesson-map {
  overflow: hidden;
  margin: 1.8rem 0 1.2rem;
  border: 1px solid rgba(20, 24, 31, 0.12);
  border-radius: 8px;
  background: #fffdf9;
  box-shadow: 0 16px 38px rgba(17, 22, 29, 0.09);
}

.lesson-map img {
  width: 100%;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.lesson-map figcaption {
  padding: 10px 14px 12px;
  border-top: 1px solid rgba(20, 24, 31, 0.08);
  color: var(--ink-soft);
  font-size: 0.86rem;
  text-align: center;
}

.article-prose details {
  margin: 1.35rem 0;
  overflow: hidden;
  border: 1px solid rgba(74, 128, 146, 0.2);
  border-radius: 8px;
  background: rgba(255, 253, 249, 0.78);
  box-shadow: 0 10px 26px rgba(17, 22, 29, 0.06);
}

.article-prose details summary {
  cursor: pointer;
  padding: 14px 44px 14px 16px;
  color: var(--ink);
  font-weight: 800;
  list-style-position: inside;
  transition:
    background-color 160ms ease,
    color 160ms ease;
}

.article-prose details summary:hover {
  background: rgba(184, 132, 77, 0.1);
  color: var(--accent-deep);
}

.article-prose details[open] summary {
  border-bottom: 1px solid rgba(20, 24, 31, 0.08);
  background: rgba(239, 246, 244, 0.68);
}

.article-prose details > :not(summary) {
  margin-right: 16px;
  margin-left: 16px;
}

.article-prose details > :last-child {
  margin-bottom: 16px;
}

.post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.post-nav-card {
  min-height: 118px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 250, 244, 0.78);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
  will-change: transform;
}

.post-nav-card span {
  display: block;
  margin-bottom: 10px;
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.post-nav-card strong {
  display: block;
  line-height: 1.35;
}

.post-nav-card:hover strong {
  color: var(--accent-deep);
}

.post-nav-card:hover,
.post-nav-card:focus-within {
  border-color: rgba(184, 132, 77, 0.28);
  box-shadow: 0 16px 42px rgba(17, 22, 29, 0.08);
  animation: article-hop 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.post-nav-card.is-empty {
  visibility: hidden;
}

.related-reading {
  display: grid;
  grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
  gap: 22px;
  margin-top: 42px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.related-reading h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  line-height: 1.1;
}

.related-reading > div > p {
  margin-top: 10px;
}

.related-reading-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.related-reading-card {
  display: grid;
  gap: 10px;
  min-height: 176px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 250, 244, 0.74);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
  will-change: transform;
}

.related-reading-card strong {
  color: var(--ink);
  line-height: 1.35;
}

.related-reading-card p {
  font-size: 0.92rem;
}

.related-reading-card:hover,
.related-reading-card:focus-within {
  border-color: rgba(184, 132, 77, 0.28);
  box-shadow: 0 16px 42px rgba(17, 22, 29, 0.08);
  animation: article-hop 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes article-hop {
  0% {
    transform: translateY(0) scale(1);
  }
  45% {
    transform: translateY(-6px) scale(1.01);
  }
  72% {
    transform: translateY(1px) scale(0.998);
  }
  100% {
    transform: translateY(0) scale(1);
  }
}

@keyframes card-wiggle {
  0% {
    transform: translateY(0) rotate(0deg);
  }
  34% {
    transform: translateY(-5px) rotate(-0.35deg);
  }
  68% {
    transform: translateY(-3px) rotate(0.28deg);
  }
  100% {
    transform: translateY(-4px) rotate(0deg);
  }
}

@keyframes action-pop {
  0% {
    transform: translateY(0) scale(1);
  }
  45% {
    transform: translateY(-2px) scale(1.045);
  }
  100% {
    transform: translateY(-1px) scale(1.02);
  }
}

@keyframes play-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
}

.post-nav-card:hover,
.post-nav-card:focus-within,
.related-reading-card:hover,
.related-reading-card:focus-within,
.video-card:hover,
.video-card:focus-within,
.featured-video:hover,
.featured-video:focus-visible {
  animation: card-wiggle 360ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.nav-links a,
.button,
.tag,
.text-link,
.post-row-link,
.topic-card-link,
.article-route-link,
.video-filter a,
.video-actions a,
.quick-searches button,
.copy-code-button {
  transform-origin: center;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.button:hover,
.button:focus-visible,
.tag:hover,
.tag:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.post-row-link:hover,
.post-row-link:focus-visible,
.topic-card-link:hover,
.topic-card-link:focus-visible,
.article-route-link:hover,
.article-route-link:focus-visible,
.video-filter a:hover,
.video-filter a:focus-visible,
.video-actions a:hover,
.video-actions a:focus-visible,
.quick-searches button:hover,
.quick-searches button:focus-visible,
.copy-code-button:hover,
.copy-code-button:focus-visible {
  animation: action-pop 260ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.video-thumb:hover .video-play-pill,
.video-thumb:focus-visible .video-play-pill,
.featured-video:hover .featured-video-label,
.featured-video:focus-visible .featured-video-label {
  animation: play-pulse 520ms ease-in-out;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }

  .post-row,
  .post-nav-card,
  .related-reading-card,
  .video-card,
  .featured-video,
  .interactive-card,
  .post-row-thumb,
  .nav-links a,
  .button,
  .tag,
  .text-link,
  .post-row-link,
  .topic-card-link,
  .article-route-link,
  .video-filter a,
  .video-actions a,
  .quick-searches button,
  .copy-code-button {
    transition: none !important;
  }

  .post-row:hover,
  .post-row:focus-within,
  .post-nav-card:hover,
  .post-nav-card:focus-within,
  .related-reading-card:hover,
  .related-reading-card:focus-within,
  .video-card:hover,
  .video-card:focus-within,
  .featured-video:hover,
  .featured-video:focus-visible,
  .interactive-card:hover,
  .interactive-card:focus-visible,
  .nav-links a:hover,
  .nav-links a:focus-visible,
  .button:hover,
  .button:focus-visible,
  .tag:hover,
  .tag:focus-visible,
  .text-link:hover,
  .text-link:focus-visible,
  .post-row-link:hover,
  .post-row-link:focus-visible,
  .topic-card-link:hover,
  .topic-card-link:focus-visible,
  .article-route-link:hover,
  .article-route-link:focus-visible,
  .video-filter a:hover,
  .video-filter a:focus-visible,
  .video-actions a:hover,
  .video-actions a:focus-visible,
  .quick-searches button:hover,
  .quick-searches button:focus-visible,
  .copy-code-button:hover,
  .copy-code-button:focus-visible,
  .video-thumb:hover .video-play-pill,
  .video-thumb:focus-visible .video-play-pill {
    animation: none !important;
    transform: none !important;
  }
}

.author-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  margin-top: 42px;
  padding: 24px;
  border: 1px solid rgba(184, 132, 77, 0.18);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(255, 250, 244, 0.92), rgba(236, 243, 243, 0.86)),
    radial-gradient(circle at 92% 12%, rgba(74, 128, 146, 0.14), transparent 34%);
  box-shadow: 0 18px 46px rgba(17, 22, 29, 0.08);
}

.author-avatar-frame {
  width: 88px;
  height: 88px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 24px;
  background: #ffffff;
  box-shadow: 0 14px 30px rgba(17, 22, 29, 0.13);
}

.author-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.start-page,
.video-page,
.search-page {
  display: grid;
  gap: 56px;
}

.start-hero,
.video-hero,
.search-hero {
  display: grid;
  gap: 18px;
  max-width: 900px;
  padding-top: 8px;
}

.video-hero {
  max-width: none;
  grid-template-columns: minmax(280px, 0.8fr) minmax(560px, 1.2fr);
  align-items: center;
}

.start-hero h1,
.video-hero h1,
.search-hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.6rem);
  line-height: 1.02;
}

.start-hero p,
.video-hero p,
.search-hero p {
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.start-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.track-card {
  align-content: start;
}

.mini-lesson-list {
  display: grid;
  gap: 8px;
  margin: 4px 0;
  padding-left: 20px;
  color: var(--ink-soft);
}

.mini-lesson-list a,
.mini-lesson-list span {
  font-weight: 700;
}

.text-link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  color: var(--ink);
  font-weight: 800;
}

.start-system {
  display: grid;
  grid-template-columns: minmax(220px, 320px) minmax(0, 1fr);
  gap: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.start-system h2,
.start-upcoming h2,
.video-group h2,
.search-results-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.1;
}

.system-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.system-steps article {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 244, 0.74);
}

.system-steps strong {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: rgba(74, 128, 146, 0.12);
  color: #315f71;
}

.system-steps h3 {
  font-size: 1.12rem;
}

.system-steps p,
.future-grid article p {
  margin-top: 8px;
  color: var(--ink-soft);
}

.future-grid.compact {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.future-grid.compact article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.42);
}

.future-grid.compact span {
  color: #315f71;
  font-size: 0.8rem;
  font-weight: 900;
}

.future-grid.compact h3 {
  margin-top: 8px;
  font-size: 1.08rem;
}

.featured-video {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 244, 0.78);
  box-shadow: 0 18px 52px rgba(17, 22, 29, 0.1);
}

.featured-video-media,
.video-thumb {
  position: relative;
  display: block;
  min-width: 0;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: 6px;
  background: #17191d;
}

.featured-video img,
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 220ms ease;
}

.featured-video:hover img,
.video-card:hover .video-thumb img {
  transform: scale(1.025);
}

.featured-video-label {
  color: var(--accent-deep);
  font-size: 0.8rem;
  font-weight: 900;
}

.featured-video strong {
  line-height: 1.35;
}

.video-filter,
.quick-searches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.video-filter a,
.quick-searches button {
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.42);
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 800;
  cursor: pointer;
}

.video-filter a:hover,
.quick-searches button:hover {
  color: var(--accent-deep);
  border-color: rgba(184, 132, 77, 0.36);
}

.video-library,
.video-group {
  display: grid;
  gap: 28px;
}

.video-group {
  scroll-margin-top: 110px;
}

.section-heading.compact {
  margin-bottom: 0;
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.video-card {
  display: grid;
  grid-template-columns: clamp(280px, 28vw, 420px) minmax(0, 1fr);
  align-items: stretch;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 244, 0.78);
  box-shadow: 0 14px 40px rgba(17, 22, 29, 0.06);
}

.video-play-pill {
  position: absolute;
  right: 12px;
  bottom: 12px;
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(15, 20, 27, 0.76);
  color: #fffaf4;
  font-size: 0.82rem;
  font-weight: 800;
}

.video-card-body {
  min-width: 0;
  display: grid;
  gap: 10px;
  align-content: center;
  padding: 22px 24px;
}

.video-meta,
.video-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.video-card h3 {
  font-size: clamp(1.12rem, 2vw, 1.45rem);
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.video-card h3 a {
  display: inline;
}

.video-card p {
  max-width: 74ch;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.65;
}

.video-stage-note {
  padding: 10px 12px;
  border: 1px solid rgba(74, 128, 146, 0.16);
  border-radius: 8px;
  background: rgba(239, 246, 244, 0.54);
}

.video-stage-note strong {
  color: var(--ink);
}

.video-actions a {
  color: var(--accent-deep);
  font-size: 0.9rem;
  font-weight: 800;
}

.global-search-panel {
  display: grid;
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 244, 0.78);
}

.global-search-panel label {
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.global-search-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
}

.global-search-box input {
  width: 100%;
  min-height: 54px;
  padding: 0 18px;
  border: 1px solid rgba(20, 24, 31, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--ink);
  font: inherit;
  outline: none;
}

.global-search-box input:focus {
  border-color: rgba(184, 132, 77, 0.62);
  box-shadow: 0 0 0 4px rgba(184, 132, 77, 0.12);
}

.global-search-box span {
  color: var(--ink-soft);
  font-weight: 800;
  white-space: nowrap;
}

.search-results-section {
  display: grid;
  gap: 18px;
}

.global-search-results {
  display: grid;
  gap: 12px;
}

.global-search-result {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.global-search-result time,
.global-search-result p {
  color: var(--ink-soft);
}

.global-search-result h3 {
  font-size: 1.2rem;
}

.global-search-result h3 a:hover {
  color: var(--accent-deep);
}

.global-search-result div {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.global-search-result span {
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(184, 132, 77, 0.1);
  color: #6d5439;
  font-size: 0.8rem;
  font-weight: 800;
}

.learning-context {
  display: grid;
  grid-template-columns: minmax(240px, 360px) minmax(0, 1fr);
  gap: 20px;
  margin-top: 30px;
  padding: 22px;
  border: 1px solid rgba(74, 128, 146, 0.22);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 250, 244, 0.9), rgba(231, 241, 241, 0.86)),
    #fffaf4;
}

.learning-context h2 {
  font-size: 1.55rem;
  line-height: 1.2;
}

.learning-context p {
  margin: 8px 0 12px;
  color: var(--ink-soft);
}

.learning-context-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.learning-context-links a,
.learning-context-placeholder {
  display: grid;
  align-content: center;
  min-height: 118px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.54);
}

.learning-context-links span,
.learning-context-placeholder {
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 800;
}

.learning-context-links strong {
  margin-top: 8px;
  line-height: 1.35;
}

.learning-context-links a:hover strong {
  color: var(--accent-deep);
}

.course-guide {
  display: grid;
  gap: 20px;
  margin-top: 30px;
  padding: 24px;
  border: 1px solid rgba(184, 132, 77, 0.18);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 250, 244, 0.92), rgba(246, 242, 235, 0.9)),
    #fffaf4;
  box-shadow: 0 18px 50px rgba(17, 22, 29, 0.07);
}

.course-guide-heading h2,
.glossary-hero h1,
.concept-title-row h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.05;
}

.course-guide-heading p,
.glossary-hero p,
.concept-title-row p {
  max-width: 760px;
  margin-top: 10px;
  color: var(--ink-soft);
}

.glossary-hero-note {
  padding: 14px 16px;
  border: 1px solid rgba(74, 128, 146, 0.18);
  border-radius: 8px;
  background: rgba(239, 246, 244, 0.58);
}

.course-guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.course-guide-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.46);
}

.course-guide-card.wide {
  grid-column: 1 / -1;
}

.course-guide-card h3 {
  font-size: 1.14rem;
}

.course-guide-card ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
  color: var(--ink-soft);
}

.self-check-list {
  display: grid;
  gap: 10px;
}

.self-check-list details {
  padding: 12px 14px;
  border: 1px solid rgba(74, 128, 146, 0.18);
  border-radius: 8px;
  background: rgba(239, 246, 244, 0.56);
}

.self-check-list summary {
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
}

.self-check-list p {
  margin-top: 10px;
  color: var(--ink-soft);
}

.concept-chip-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.concept-chip-list a {
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1px solid rgba(74, 128, 146, 0.18);
  border-radius: 8px;
  background: rgba(239, 246, 244, 0.68);
}

.concept-chip-list a:hover strong {
  color: var(--accent-deep);
}

.concept-chip-list span,
.course-next-note {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.course-next-note {
  padding-top: 6px;
  font-weight: 800;
}

.glossary-page,
.concept-page {
  display: grid;
  gap: 42px;
}

.glossary-hero,
.concept-detail {
  display: grid;
  gap: 18px;
  max-width: 900px;
}

.concept-detail {
  max-width: 980px;
}

.glossary-groups,
.glossary-group {
  display: grid;
  gap: 28px;
}

.glossary-group {
  scroll-margin-top: 110px;
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.glossary-card {
  display: grid;
  gap: 12px;
  min-height: 220px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 250, 244, 0.78);
  box-shadow: 0 14px 40px rgba(17, 22, 29, 0.06);
}

.glossary-card-meta,
.glossary-card-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.glossary-card-meta span {
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 900;
}

.glossary-card h3 {
  font-size: 1.24rem;
  line-height: 1.2;
}

.glossary-card p {
  color: var(--ink-soft);
}

.glossary-card-actions a {
  color: var(--accent-deep);
  font-size: 0.9rem;
  font-weight: 800;
}

.concept-title-row,
.concept-explain,
.concept-aliases,
.concept-reading {
  display: grid;
  gap: 12px;
}

.concept-explain {
  padding: 22px;
  border: 1px solid rgba(74, 128, 146, 0.18);
  border-radius: 8px;
  background: rgba(239, 246, 244, 0.62);
}

.concept-explain h2,
.concept-aliases h2,
.concept-reading h2 {
  font-size: 1.35rem;
}

.author-card-main {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.author-kicker {
  display: block;
  margin-bottom: 4px;
  color: var(--accent-deep);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.author-card h2 {
  color: var(--ink);
  font-size: clamp(1.55rem, 2.4vw, 2.1rem);
  line-height: 1.08;
}

.author-card p {
  max-width: 720px;
  color: #3f4650;
}

.author-meta,
.author-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.author-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border: 1px solid rgba(20, 24, 31, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.54);
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.author-actions {
  justify-content: flex-end;
  min-width: 168px;
}

.author-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(184, 132, 77, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  color: var(--accent-deep);
  font-size: 0.84rem;
  font-weight: 800;
}

.author-actions a:hover {
  border-color: rgba(184, 132, 77, 0.38);
  background: rgba(255, 255, 255, 0.78);
}

.comments-section {
  margin-top: 44px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.comments-heading {
  display: grid;
  gap: 6px;
  margin-bottom: 18px;
}

.comments-heading span {
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.comments-heading h2 {
  color: var(--ink);
  font-size: clamp(1.42rem, 2vw, 1.9rem);
  line-height: 1.12;
}

.comments-placeholder {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 250, 244, 0.78);
}

.comments-placeholder strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
}

.comments-placeholder p {
  color: var(--ink-soft);
}

.archive-grid {
  display: grid;
  gap: 18px;
}

.not-found-page {
  min-height: 68vh;
  display: grid;
  align-items: center;
}

.not-found-hero {
  max-width: 720px;
}

.not-found-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.site-footer {
  border-top: 1px solid rgba(20, 24, 31, 0.08);
  background: rgba(255, 250, 244, 0.72);
}

.footer-inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0 48px;
  color: var(--ink-soft);
}

.footer-inner strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
}

.footer-meta {
  display: grid;
  justify-items: end;
  gap: 8px;
  text-align: right;
}

.footer-status-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 30px;
  padding: 0 11px;
  border: 1px solid rgba(20, 24, 31, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 750;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.footer-status-link:hover {
  transform: translateY(-1px);
  border-color: rgba(184, 132, 77, 0.34);
  background: rgba(255, 255, 255, 0.84);
}

.footer-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #7a828d;
  box-shadow: 0 0 0 4px rgba(122, 130, 141, 0.12);
}

.footer-status-link[data-state='success'] .footer-status-dot {
  background: #1f8b62;
  box-shadow: 0 0 0 4px rgba(31, 139, 98, 0.13);
}

.footer-status-link[data-state='warning'] .footer-status-dot {
  background: #bd7928;
  box-shadow: 0 0 0 4px rgba(189, 121, 40, 0.14);
}

.footer-status-link[data-state='failure'] .footer-status-dot {
  background: #b5433b;
  box-shadow: 0 0 0 4px rgba(181, 67, 59, 0.13);
}

.footer-status-link[data-state='running'] .footer-status-dot,
.status-overview[data-overall-state='running']::before,
.status-card[data-state='running'] .status-card-state::before {
  animation: status-pulse 1.6s ease-in-out infinite;
}

.status-page {
  padding-bottom: 88px;
}

.status-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  align-items: end;
  gap: 56px;
  padding: 88px 0 44px;
  border-bottom: 1px solid var(--line);
}

.status-hero h1 {
  max-width: 760px;
  margin-top: 10px;
  font-size: clamp(3rem, 7vw, 5.7rem);
  line-height: 0.98;
}

.status-hero > div:first-child > p {
  max-width: 680px;
  margin-top: 22px;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.status-overview {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 6px 0 6px 26px;
  border-left: 3px solid #7a828d;
}

.status-overview::before {
  content: '';
  position: absolute;
  top: 12px;
  left: -8px;
  width: 13px;
  height: 13px;
  border: 3px solid var(--bg);
  border-radius: 50%;
  background: #7a828d;
}

.status-overview[data-overall-state='success'] {
  border-color: #1f8b62;
}

.status-overview[data-overall-state='success']::before {
  background: #1f8b62;
}

.status-overview[data-overall-state='warning'] {
  border-color: #bd7928;
}

.status-overview[data-overall-state='warning']::before {
  background: #bd7928;
}

.status-overview[data-overall-state='failure'] {
  border-color: #b5433b;
}

.status-overview[data-overall-state='failure']::before {
  background: #b5433b;
}

.status-overview-label,
.status-card-eyebrow {
  color: var(--accent-deep);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0;
}

.status-overview strong {
  color: var(--ink);
  font-size: 1.4rem;
  line-height: 1.25;
}

.status-overview p,
.status-overview time {
  color: var(--ink-soft);
}

.status-overview time {
  font-size: 0.8rem;
  font-weight: 700;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 34px 0;
}

.status-card {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 20px;
  min-height: 310px;
  padding: 26px;
  border: 1px solid rgba(20, 24, 31, 0.12);
  border-radius: 8px;
  background: rgba(255, 250, 244, 0.88);
  box-shadow: 0 16px 42px rgba(17, 22, 29, 0.07);
}

.status-card:hover,
.status-card:focus-visible {
  border-color: rgba(184, 132, 77, 0.42);
  box-shadow: 0 24px 54px rgba(17, 22, 29, 0.11);
}

.status-card-heading,
.status-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.status-card-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #616975;
  font-size: 0.82rem;
  font-weight: 800;
}

.status-card-state::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #7a828d;
}

.status-card[data-state='success'] .status-card-state {
  color: #176b4a;
}

.status-card[data-state='success'] .status-card-state::before {
  background: #1f8b62;
}

.status-card[data-state='failure'] .status-card-state {
  color: #98531e;
}

.status-card[data-state='failure'] .status-card-state::before {
  background: #bd7928;
}

.status-card h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
}

.status-card p {
  margin-top: 10px;
  color: var(--ink-soft);
}

.status-card ul {
  display: grid;
  align-content: start;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.status-card li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #434a54;
  font-size: 0.9rem;
  font-weight: 650;
}

.status-card li::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--accent);
}

.status-card-footer {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.status-card-footer time {
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.status-card-footer strong {
  color: var(--accent-deep);
  font-size: 0.86rem;
}

.status-dependency-count {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.status-dependency-count strong {
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", "Noto Serif SC", serif;
  font-size: 4.3rem;
  line-height: 1;
}

.status-dependency-count span {
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 700;
}

.status-schedule {
  display: grid;
  grid-template-columns: minmax(220px, 0.55fr) minmax(0, 1.45fr);
  gap: 20px 64px;
  padding: 42px 0 0;
  border-top: 1px solid var(--line);
}

.status-section-heading h2 {
  margin-top: 8px;
  font-size: 2rem;
}

.status-schedule-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.status-schedule-list div {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 20px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.status-schedule-list strong {
  color: var(--accent-deep);
}

.status-schedule-list span,
.status-note {
  color: var(--ink-soft);
}

.status-note {
  grid-column: 2;
  font-size: 0.82rem;
}

@keyframes status-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

@media (max-width: 820px) {
  .status-hero,
  .status-schedule {
    grid-template-columns: 1fr;
  }

  .status-grid {
    grid-template-columns: 1fr;
  }

  .status-note {
    grid-column: 1;
  }
}

@media (max-width: 560px) {
  .status-page {
    padding-bottom: 56px;
  }

  .status-hero {
    gap: 34px;
    padding: 54px 0 34px;
  }

  .status-hero h1 {
    font-size: 3rem;
  }

  .status-card {
    min-height: 0;
    padding: 20px;
  }

  .status-card-footer,
  .status-schedule-list div {
    align-items: flex-start;
    grid-template-columns: 1fr;
  }

  .status-card-footer {
    display: grid;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .footer-status-link[data-state='running'] .footer-status-dot,
  .status-overview[data-overall-state='running']::before,
  .status-card[data-state='running'] .status-card-state::before {
    animation: none;
  }
}

.view-counter {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
  min-height: 30px;
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.view-counter span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid rgba(20, 24, 31, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
}

.view-counter[data-ready='true'] span {
  color: var(--accent-deep);
  background: rgba(184, 132, 77, 0.1);
}

@media (max-width: 1024px) {
  .hero-scene {
    min-height: 860px;
  }

  .featured-story {
    grid-template-columns: 1fr;
  }

  .featured-thumb {
    height: 100%;
  }

  .featured-media {
    aspect-ratio: 16 / 8.5;
  }

  .article-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .video-hero,
  .start-system,
  .learning-context {
    grid-template-columns: 1fr;
  }

  .product-path-grid,
  .route-preview-grid,
  .graduation-grid,
  .track-grid,
  .system-steps,
  .future-grid.compact,
  .glossary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .video-grid {
    grid-template-columns: 1fr;
  }

  .article-toc {
    position: static;
    order: 0;
  }

  .author-card {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .author-actions {
    justify-content: flex-start;
    min-width: 0;
  }

  .journey-note-inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 10px;
    padding: 22px 0;
  }
}

@media (max-width: 820px) {
  :root {
    --shell-width: min(1180px, calc(100% - 28px));
  }

  .header-frame {
    padding-top: 14px;
  }

  .nav {
    min-height: auto;
    padding: 16px 18px;
    align-items: flex-start;
    border-radius: 28px;
  }

  .nav-links {
    gap: 14px;
    font-size: 0.92rem;
    justify-content: flex-end;
  }

  .hero-scene {
    min-height: 760px;
    padding-top: 128px;
  }

  .hero-copy {
    padding-top: 18px;
  }

  .hero-copy h1 {
    font-size: clamp(3rem, 12vw, 4.8rem);
  }

  .hero-copy p {
    font-size: 1.02rem;
  }

  .section-heading,
  .roadmap-summary,
  .calendar-list,
  .topic-grid,
  .related-reading,
  .related-reading-grid,
  .metric-strip,
  .start-stats,
  .product-path-grid,
  .track-grid,
  .system-steps,
  .future-grid.compact,
  .video-grid,
  .course-guide-grid,
  .concept-chip-list,
  .route-preview-grid,
  .graduation-grid,
  .summary-stage-card,
  .glossary-grid,
  .learning-context-links,
  .post-nav,
  .post-row {
    grid-template-columns: 1fr;
  }

  .course-guide-card.wide {
    grid-column: auto;
  }

  .video-card {
    grid-template-columns: 1fr;
  }

  .global-search-box {
    grid-template-columns: 1fr;
  }

  .section-directory {
    grid-template-columns: 1fr;
  }

  .section-directory article:nth-child(odd),
  .section-directory article:nth-child(even) {
    padding: 20px 0;
    border-left: 0;
  }

  .lesson-list.compact {
    margin-left: 0;
  }

  .post-row {
    align-items: start;
  }

  .post-row-side {
    justify-items: start;
    min-width: 0;
  }

  .footer-inner {
    align-items: start;
  }

  .footer-meta {
    justify-items: start;
    text-align: left;
  }

  .view-counter {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  body.home-page .site-header {
    position: relative;
    padding-top: env(safe-area-inset-top, 0px);
    background: var(--bg-strong);
  }

  body.home-page .header-frame {
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .nav {
    flex-direction: column;
    gap: 12px;
    padding: 14px 16px 12px;
    border-radius: 22px;
  }

  .brand {
    width: 100%;
  }

  .brand-logo {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }

  .nav-links {
    width: 100%;
    max-width: 100%;
    padding: 0 0 4px;
    gap: 18px;
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links a {
    flex: 0 0 auto;
  }

  .nav-links a[aria-current='page']::after {
    bottom: -4px;
  }

  body.home-page .hero-scene {
    padding-top: 38px;
  }

  .brand-text {
    white-space: normal;
  }

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

  .hero-copy h1 {
    font-size: clamp(2.9rem, 13vw, 4rem);
    line-height: 0.98;
    white-space: normal;
    max-width: none;
  }

  .hero-copy h1 span {
    display: block;
  }

  .hero-actions .button,
  .section-heading .button {
    width: 100%;
  }

  .search-box {
    grid-template-columns: 1fr;
  }

  .search-box span {
    padding-left: 4px;
  }

  .section {
    padding: 56px 0 72px;
  }

  .lesson-list li {
    grid-template-columns: 1fr;
  }

  .learning-stage-header,
  .content-section-header {
    grid-template-columns: 1fr;
  }

  .content-section-header > strong {
    justify-self: start;
  }

  .roadmap-start-actions .button {
    width: 100%;
  }

  .page-hero p,
  .roadmap-summary span,
  .lesson-list a,
  .lesson-list p,
  .calendar-list h3 {
    overflow-wrap: anywhere;
  }

  .page-shell {
    padding-bottom: 72px;
  }

  .featured-story {
    padding: 14px;
    border-radius: 24px;
  }

  .featured-content h2 {
    font-size: clamp(1.55rem, 7vw, 2rem);
    overflow-wrap: anywhere;
  }

  .featured-thumb {
    aspect-ratio: 16 / 9;
  }

  .post-row-media-frame {
    border-radius: 18px;
  }

  .article-cover-frame {
    border-radius: 22px;
  }

  .featured-content {
    order: 1;
  }

  .featured-thumb {
    order: 2;
  }

  .not-found-actions .button {
    width: 100%;
  }
}

.home-version-legacy {
  display: none;
}

html[data-home-version='legacy'] .home-version-new {
  display: none;
}

html[data-home-version='legacy'] .home-version-legacy {
  display: block;
}

.home-version-toggle {
  cursor: pointer;
  font-family: inherit;
}

html:not([data-home-version='legacy']) body.home-page {
  background: #fff9ef;
}

html:not([data-home-version='legacy']) body.home-page .header-frame {
  padding-top: 30px;
}

html:not([data-home-version='legacy']) body.home-page .nav {
  min-height: 84px;
  padding: 16px 28px;
  border-radius: 24px;
  background: rgba(23, 29, 38, 0.94);
  box-shadow: 0 24px 64px rgba(23, 29, 38, 0.24);
}

.academy-home {
  background:
    linear-gradient(180deg, rgba(255, 249, 239, 0) 0, #fff9ef 720px),
    #fff9ef;
}

.academy-hero {
  position: relative;
  min-height: 760px;
  padding: 158px 0 72px;
  overflow: hidden;
  color: #ffffff;
  background: #17202b;
}

.academy-hero::before,
.academy-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.academy-hero::before {
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(10, 15, 22, 0.72), rgba(10, 15, 22, 0.18) 58%, rgba(10, 15, 22, 0.28)),
    linear-gradient(180deg, rgba(10, 15, 22, 0.18), rgba(255, 249, 239, 0.96) 92%);
}

.academy-hero::after {
  z-index: 2;
  background: linear-gradient(180deg, rgba(255, 249, 239, 0) 62%, #fff9ef 100%);
}

.academy-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  filter: saturate(1.06) contrast(1.03) brightness(0.94);
}

.academy-hero-grid {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 380px);
  gap: 52px;
  align-items: end;
  width: var(--shell-width);
  margin: 0 auto;
  min-width: 0;
  min-height: 520px;
}

.academy-copy {
  max-width: 780px;
  min-width: 0;
}

.academy-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #e8f8f2;
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.academy-label::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #19a77f;
}

.academy-label.dark {
  color: #16735e;
}

.academy-copy h1 {
  max-width: 820px;
  margin-top: 20px;
  color: #ffffff;
  font-family:
    "Noto Serif SC", "Songti SC", "Iowan Old Style", "Palatino Linotype", serif;
  font-size: 5.25rem;
  line-height: 1.03;
  text-shadow: 0 16px 44px rgba(0, 0, 0, 0.32);
  overflow-wrap: anywhere;
}

.academy-copy h1 span {
  display: inline;
}

.academy-copy p {
  max-width: 760px;
  margin-top: 26px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.24rem;
  line-height: 1.88;
  text-shadow: 0 8px 28px rgba(0, 0, 0, 0.26);
  overflow-wrap: anywhere;
}

.academy-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.academy-current-card {
  display: grid;
  gap: 14px;
  min-width: 0;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 8px;
  background: rgba(255, 249, 239, 0.94);
  color: #17202b;
  box-shadow: 0 28px 70px rgba(23, 29, 38, 0.22);
}

.academy-card-kicker {
  color: #16735e;
  font-size: 0.84rem;
  font-weight: 900;
}

.academy-current-card h2 {
  font-size: 2rem;
  line-height: 1.16;
  overflow-wrap: anywhere;
}

.academy-current-card h2 a {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.academy-current-card p {
  color: #596573;
  line-height: 1.76;
  overflow-wrap: anywhere;
}

.academy-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.academy-pill {
  padding: 5px 9px;
  border: 1px solid rgba(23, 32, 43, 0.12);
  border-radius: 999px;
  background: #ffffff;
  color: #17202b;
  font-size: 0.78rem;
  font-weight: 900;
}

.academy-overview,
.academy-board {
  position: relative;
  z-index: 4;
}

.academy-overview {
  padding: 36px 0 20px;
}

.academy-section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.academy-section-heading.compact {
  align-items: center;
  margin-bottom: 18px;
}

.academy-section-heading h2 {
  margin-top: 6px;
  font-size: 2.45rem;
  line-height: 1.08;
}

.academy-stage-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.academy-stage-card {
  display: grid;
  gap: 12px;
  min-height: 216px;
  padding: 22px;
  border: 1px solid rgba(23, 32, 43, 0.1);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.94);
  box-shadow: 0 18px 48px rgba(23, 29, 38, 0.08);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.academy-stage-card:hover,
.academy-stage-card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(15, 118, 189, 0.26);
  box-shadow: 0 24px 60px rgba(23, 29, 38, 0.13);
}

.academy-stage-card > span {
  color: #0f76bd;
  font-size: 1.65rem;
  font-weight: 950;
  line-height: 1;
}

.academy-stage-card h3 {
  font-size: 1.35rem;
  line-height: 1.2;
}

.academy-stage-card p,
.academy-stage-card strong {
  color: #68727f;
}

.academy-stage-card strong {
  align-self: end;
  font-size: 0.88rem;
}

.academy-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
  gap: 22px;
  padding: 26px 0 18px;
}

.academy-route-panel,
.academy-video-panel {
  min-width: 0;
  padding: 26px;
  border: 1px solid rgba(23, 32, 43, 0.1);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.94);
  box-shadow: 0 18px 48px rgba(23, 29, 38, 0.08);
}

.academy-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin: 0 0 18px;
  border: 1px solid rgba(23, 32, 43, 0.1);
  border-radius: 8px;
  background: rgba(23, 32, 43, 0.1);
}

.academy-stats div {
  padding: 16px;
  background: #fffaf4;
}

.academy-stats dt {
  color: #17202b;
  font-size: 2rem;
  font-weight: 950;
  line-height: 1;
}

.academy-stats dd {
  margin: 8px 0 0;
  color: #68727f;
  font-size: 0.86rem;
  font-weight: 800;
}

.academy-route-list,
.academy-video-list {
  display: grid;
  gap: 10px;
}

.academy-route-list a,
.academy-video-item {
  display: grid;
  align-items: center;
  gap: 16px;
  min-height: 72px;
  padding: 14px;
  border: 1px solid rgba(23, 32, 43, 0.1);
  border-radius: 8px;
  background: #ffffff;
}

.academy-route-list a {
  grid-template-columns: 56px minmax(0, 1fr) auto;
}

.academy-route-list span,
.academy-video-number {
  display: grid;
  place-items: center;
  width: 56px;
  min-height: 44px;
  border-radius: 8px;
  background: linear-gradient(135deg, #17202b, #0f76bd);
  color: #ffffff;
  font-weight: 950;
}

.academy-route-list strong,
.academy-video-item strong {
  color: #17202b;
  font-size: 1.02rem;
}

.academy-route-list em,
.academy-video-item em {
  color: #68727f;
  font-size: 0.84rem;
  font-style: normal;
  font-weight: 800;
}

.academy-video-item {
  grid-template-columns: 56px minmax(0, 1fr);
}

.academy-video-item > span:last-child {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.academy-video-item strong,
.academy-video-item em {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.academy-latest {
  padding-top: 50px;
}

@media (max-width: 1024px) {
  .academy-hero-grid,
  .academy-board {
    grid-template-columns: 1fr;
  }

  .academy-stage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .academy-current-card {
    max-width: 620px;
  }
}

@media (max-width: 820px) {
  html:not([data-home-version='legacy']) body.home-page .nav {
    min-height: auto;
    padding: 16px 18px;
    border-radius: 22px;
  }

  .academy-hero {
    min-height: 720px;
    padding-top: 132px;
  }

  .academy-copy h1 {
    font-size: 3.9rem;
  }

  .academy-copy p {
    font-size: 1.06rem;
  }

  .academy-section-heading,
  .academy-section-heading.compact {
    align-items: start;
    flex-direction: column;
  }

  .academy-stage-grid,
  .academy-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  html:not([data-home-version='legacy']),
  html:not([data-home-version='legacy']) body.home-page,
  html:not([data-home-version='legacy']) .academy-home {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
  }

  html:not([data-home-version='legacy']) body.home-page .site-header {
    position: absolute;
    background: transparent;
  }

  html:not([data-home-version='legacy']) body.home-page .header-frame {
    padding-top: 12px;
  }

  html:not([data-home-version='legacy']) body.home-page .header-frame.shell,
  html:not([data-home-version='legacy']) body.home-page .academy-hero-grid.shell,
  html:not([data-home-version='legacy']) body.home-page .academy-overview.shell,
  html:not([data-home-version='legacy']) body.home-page .academy-board.shell,
  html:not([data-home-version='legacy']) body.home-page .academy-latest.shell {
    width: calc(100vw - 28px);
    max-width: calc(100vw - 28px);
    min-width: 0;
    margin-left: auto;
    margin-right: auto;
  }

  html:not([data-home-version='legacy']) body.home-page .nav {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow: hidden;
  }

  html:not([data-home-version='legacy']) body.home-page .brand,
  html:not([data-home-version='legacy']) body.home-page .nav-links {
    min-width: 0;
  }

  .academy-hero {
    min-height: 740px;
    padding-top: 206px;
  }

  .academy-hero-grid {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    min-height: auto;
    gap: 28px;
  }

  .academy-hero-grid > * {
    min-width: 0;
    max-width: 100%;
  }

  .academy-copy,
  .academy-current-card {
    display: block;
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .academy-current-card {
    display: grid;
  }

  .academy-copy p,
  .academy-current-card h2,
  .academy-current-card h2 a,
  .academy-current-card p {
    display: block;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow: visible;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .academy-copy h1 {
    max-width: 100%;
    font-size: 2.52rem;
    line-height: 1.08;
    word-break: break-word;
  }

  .academy-copy h1 span {
    display: block;
  }

  .academy-copy p {
    max-width: 100%;
  }

  .academy-actions,
  .academy-actions .button,
  .academy-section-heading .button {
    width: 100%;
  }

  .academy-current-card,
  .academy-route-panel,
  .academy-video-panel,
  .academy-stage-card {
    padding: 18px;
  }

  .academy-current-card h2 {
    font-size: 1.42rem;
    word-break: break-word;
  }

  .academy-current-card p {
    font-size: 0.95rem;
  }

  .academy-route-list a {
    grid-template-columns: 48px minmax(0, 1fr);
  }

  .academy-route-list em {
    grid-column: 2;
  }
}