:root {
  --ink: #0a0a0a;
  --paper: #ffffff;
  --rule: #ececec;
  --muted: #6b6b6b;
  --hover: #fafafa;
  --frame-bg: #fafafa;
  --code-bg: #f1f1f1;
  --nav-bg: 255, 255, 255;
  --gutter: clamp(20px, 6vw, 96px);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}

html.dark {
  --ink: #ededed;
  --paper: #0a0a0a;
  --rule: #1f1f1f;
  --muted: #9a9a9a;
  --hover: #161616;
  --frame-bg: #111111;
  --code-bg: #1a1a1a;
  --nav-bg: 10, 10, 10;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', system-ui, sans-serif;
  font-feature-settings: 'cv11', 'ss01', 'ss03';
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  opacity: 0;
  transition: opacity 600ms var(--ease-out);
}
body.loaded { opacity: 1; }

a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; }

a:focus, button:focus { outline: none; }
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-radius: 2px;
}
.lang-switch button:focus-visible { outline-offset: 1px; border-radius: 999px; }
.dl:focus-visible { outline-offset: 2px; }

/* ---------------- NAV ---------------- */
.nav {
  position: sticky;
  top: 0;
  background: rgba(var(--nav-bg), 0.6);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  padding: 16px var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  z-index: 10;
  transition: background 250ms var(--ease), border-color 250ms var(--ease);
}
.nav.scrolled {
  background: rgba(var(--nav-bg), 0.85);
  border-bottom-color: var(--rule);
}
.wordmark {
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 18px;
  justify-self: start;
}
.nav-links {
  display: flex;
  gap: 32px;
  justify-self: center;
}
.nav-links a {
  font-size: 14px;
  color: var(--ink);
  font-weight: 400;
  position: relative;
  padding: 4px 2px;
  transition: opacity 200ms var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  bottom: 0;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms var(--ease-out);
}
.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
}
.nav-links a:hover { opacity: 0.7; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-self: end;
}

.lang-switch {
  display: flex;
  gap: 4px;
}

.theme-toggle {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  width: 32px;
  height: 32px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 999px;
  transition: color 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease);
}
.theme-toggle:hover {
  color: var(--ink);
  background: var(--hover);
}
.theme-toggle svg { display: none; }
.theme-toggle .icon-moon { display: block; }
html.dark .theme-toggle .icon-moon { display: none; }
html.dark .theme-toggle .icon-sun { display: block; }
.lang-switch button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 6px 10px;
  cursor: pointer;
  border-radius: 999px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease);
}
.lang-switch button:hover {
  color: var(--ink);
  background: var(--hover);
}
.lang-switch button[aria-current="true"] {
  color: var(--ink);
  border-color: var(--rule);
  background: var(--paper);
}

@media (max-width: 720px) {
  .nav {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: 12px;
  }
  .wordmark { grid-row: 1; }
  .nav-right { grid-row: 1; justify-self: end; gap: 8px; }
  .lang-switch { gap: 2px; }
  .lang-switch button { padding: 6px 8px; }
  .nav-links { grid-column: 1 / -1; justify-self: start; gap: 24px; flex-wrap: wrap; }
}
@media (max-width: 380px) {
  :root { --gutter: 16px; }
  .nav { padding: 12px var(--gutter); }
  .lang-switch button { padding: 5px 6px; font-size: 11px; }
  .theme-toggle { width: 28px; height: 28px; }
  .nav-links { gap: 16px; font-size: 13px; }
}

/* ---------------- MISSION (overlay on first visit) ---------------- */
html.mission-locked, html.mission-locked body { overflow: hidden; }

.mission-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--paper);
  cursor: pointer;
  transition: opacity 900ms cubic-bezier(0.4, 0, 0.2, 1), transform 900ms cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}
.mission-overlay.is-closing {
  opacity: 0;
  transform: scale(1.04);
  pointer-events: none;
}
.mission-overlay.is-hidden { display: none; }

.mission-stage {
  position: absolute;
  inset: 0;
  padding: clamp(80px, 12vh, 140px) var(--gutter) clamp(60px, 8vh, 100px);
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: center;
  overflow-y: auto;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms var(--ease-out), transform 800ms var(--ease-out);
  pointer-events: none;
}
.mission-overlay[data-stage="1"] .mission-stage-1,
.mission-overlay[data-stage="2"] .mission-stage-2 {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.mission-overlay[data-stage="2"] .mission-stage-1 {
  opacity: 0;
  transform: translateY(-24px);
  transition-duration: 600ms;
}

.mission-inner {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(24px, 4vh, 56px);
  min-height: 0;
}
.mission-inner-center {
  align-content: center;
  justify-items: start;
}
.mission-purpose-layout {
  grid-template-rows: auto 1fr auto;
}

/* Stage 2 — purpose */
.mission-purpose-content {
  display: grid;
  gap: clamp(18px, 3vh, 32px);
  max-width: 980px;
  align-self: center;
}
.mission-purpose {
  font-size: clamp(36px, 5.8vw, 84px);
  font-weight: 600;
  line-height: 1.03;
  letter-spacing: -0.035em;
  margin: 0;
  max-width: 19ch;
  color: var(--ink);
  position: relative;
}
.mission-overlay[data-stage="2"] .mission-purpose {
  animation: stage2-rise 1200ms var(--ease-out) 200ms both;
}
.mission-overlay[data-stage="2"] .mission-purpose::after {
  content: "";
  position: absolute;
  bottom: -0.18em;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--ink);
  animation: stage2-underline 1400ms var(--ease-out) 900ms forwards;
}
.mission-overlay[data-stage="2"] .mission-stage-2 .mission-marker .marker-line {
  animation: marker-grow 1100ms var(--ease-out) 100ms both;
  transform-origin: left;
}
.mission-overlay[data-stage="2"] .mission-stage-2 .marker-label {
  animation: fade-in 800ms var(--ease-out) 600ms both;
}
.mission-overlay[data-stage="2"] .mission-stage-2 .mission-dismiss-hint {
  animation: fade-in 900ms var(--ease-out) 1600ms both;
}

@keyframes stage2-rise {
  from { opacity: 0; transform: translateY(0.3em) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes stage2-underline {
  to { width: 100%; }
}

.mission-marker {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 8px;
}
.marker-line {
  display: block;
  width: 48px;
  height: 1px;
  background: var(--ink);
  transform-origin: left;
  animation: marker-grow 1100ms var(--ease-out) 200ms both;
}
.marker-label {
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  display: inline-flex;
  align-items: baseline;
  gap: 0.5em;
  opacity: 0;
  animation: marker-fade 700ms var(--ease-out) 700ms forwards;
}
.marker-num {
  font-size: 0.5em;
}

.mission-text {
  align-self: center;
  font-size: clamp(36px, 7.5vw, 104px);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin: 0;
  max-width: 22ch;
}
.mission-line {
  display: block;
  opacity: 0;
  transform: translateY(0.4em);
  will-change: opacity, transform;
}
.mission-line:nth-child(1) {
  animation: mission-rise 1200ms var(--ease-out) 350ms forwards;
}
.mission-line:nth-child(2) {
  animation: mission-rise 1200ms var(--ease-out) 1100ms forwards;
}
.mission-accent {
  color: var(--ink);
  margin-top: clamp(16px, 2.5vh, 32px);
  font-weight: 600;
  position: relative;
}
.mission-accent::after {
  content: "";
  position: absolute;
  bottom: -0.35em;
  left: 0;
  height: 2px;
  width: 0;
  background: var(--ink);
  animation: mission-underline 1400ms var(--ease-out) 1900ms forwards;
}

.mission-promise {
  font-size: clamp(15px, 1.4vw, 19px);
  color: var(--muted);
  letter-spacing: 0.005em;
  max-width: 44ch;
  margin: clamp(32px, 4vh, 48px) 0 0;
  opacity: 0;
  animation: mission-fade 1000ms var(--ease-out) 2200ms forwards;
}

.mission-dismiss-hint {
  font-size: 13px;
  color: var(--muted);
  margin: clamp(24px, 4vh, 48px) 0 0;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: 'SF Mono', 'Monaco', monospace;
  opacity: 0;
  animation: hint-pulse 2800ms ease-in-out 2600ms infinite;
}
@keyframes hint-pulse {
  0%, 100% { opacity: 0.35; }
  50%      { opacity: 0.85; }
}

@keyframes fade-in {
  to { opacity: 1; }
}

@keyframes mission-rise {
  from { opacity: 0; transform: translateY(0.4em); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes mission-fade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes marker-grow {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@keyframes marker-fade {
  to { opacity: 1; }
}
@keyframes mission-underline {
  to { width: 100%; }
}
@keyframes scroll-cue {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(6px); }
}
@media (max-width: 720px) {
  .mission-overlay { padding: 64px 20px 48px; }
  .mission-text { font-size: clamp(32px, 9vw, 56px); max-width: 16ch; }
  .mission-purpose { font-size: clamp(32px, 9vw, 52px); }
}

@media (prefers-reduced-motion: reduce) {
  .marker-line, .marker-label, .mission-line, .mission-promise, .mission-dismiss-hint, .mission-purpose {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .marker-line { transform: scaleX(1) !important; }
  .mission-accent::after { width: 100% !important; animation: none !important; }
  .mission-begin::after { animation: none !important; }
}

/* ---------------- HERO ---------------- */
.hero {
  padding: clamp(96px, 14vw, 220px) var(--gutter) clamp(56px, 8vw, 120px);
  max-width: 1200px;
  margin: 0 auto;
}
.hero-short { padding-bottom: clamp(40px, 6vw, 80px); }

.subnav-crumb {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.02em;
  margin: 0 0 28px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.subnav-crumb a {
  color: var(--muted);
  transition: color 200ms var(--ease);
}
.subnav-crumb a:hover { color: var(--ink); }

.display {
  font-size: clamp(56px, 11vw, 140px);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 0 0 clamp(28px, 4vw, 56px);
}
.display span {
  display: block;
}
[data-stagger] > span {
  opacity: 0;
  transform: translateY(0.2em);
  transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out);
}
body.loaded [data-stagger] > span {
  opacity: 1;
  transform: translateY(0);
}

.display-sm {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 600;
  margin: 0 0 16px;
}

.lede {
  font-size: clamp(18px, 1.4vw, 22px);
  line-height: 1.5;
  max-width: 48ch;
  color: var(--ink);
  margin: 0;
}

.eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------------- VIDEO ---------------- */
.video {
  padding: 0 var(--gutter) clamp(120px, 14vw, 200px);
  max-width: 1400px;
  margin: 0 auto;
}
.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--rule);
  background: var(--frame-bg);
  overflow: hidden;
  transition: border-color 300ms var(--ease);
}
.video-frame:hover { border-color: var(--muted); }
.video-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}
.video-frame video:not([src]) { display: none; }
.video-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--muted);
  font-size: 15px;
  letter-spacing: -0.01em;
}
.video-frame.has-video .video-empty { display: none; }
.video-frame.has-video video:not([src]) { display: block; }
.video-empty small {
  font-size: 12px;
  color: var(--muted);
  opacity: 0.7;
}
.video-empty code {
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 11px;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 3px;
}
.video-frame.small {
  aspect-ratio: 16 / 9;
  margin-top: 32px;
  max-width: 720px;
}
.video-embed {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* ---------------- INTRO SECTIONS (home) ---------------- */
.intro-sections {
  padding: clamp(80px, 12vw, 160px) var(--gutter) clamp(72px, 9vw, 120px);
  max-width: 1200px;
  margin: 0 auto;
}
.intro-head {
  margin-bottom: clamp(60px, 8vw, 120px);
}
.intro-head .lede {
  margin-top: 16px;
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.section-grid--three {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 980px) {
  .section-grid--three { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 780px) {
  .section-grid { grid-template-columns: 1fr; }
}
.section-card {
  display: flex;
  flex-direction: column;
  padding: clamp(40px, 5vw, 64px) clamp(32px, 4vw, 48px);
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
  min-height: 320px;
  position: relative;
  transition: background 350ms var(--ease);
}
.section-card:first-child { padding-left: 0; }
.section-card:last-child { border-right: none; padding-right: 0; }
@media (max-width: 780px) {
  .section-card { border-right: none; padding: clamp(40px, 8vw, 64px) 0; }
  .section-card:last-child { padding-left: 0; }
}
.section-card:hover { background: var(--hover); }
.section-card .eyebrow {
  margin-bottom: 24px;
}
.section-card h3 {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  line-height: 1;
}
.section-card p {
  font-size: 18px;
  color: var(--muted);
  margin: 0 0 auto;
  max-width: 36ch;
  line-height: 1.5;
}
.cta-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 48px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}
.cta-arrow svg {
  transition: transform 300ms var(--ease-out);
}
.section-card:hover .cta-arrow svg { transform: translateX(4px); }

/* ---------------- SECTION BLOCK (learn / practice) ---------------- */
.section-block {
  padding: 0 var(--gutter) clamp(100px, 12vw, 180px);
  max-width: 1100px;
  margin: 0 auto;
}
.section-head {
  padding-bottom: clamp(32px, 4vw, 56px);
  border-bottom: 1px solid var(--rule);
  margin-bottom: clamp(24px, 4vw, 48px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.section-lede {
  font-size: 16px;
  color: var(--muted);
  margin: 0;
  max-width: 50ch;
}

/* ---------------- LESSONS LIST ---------------- */
.lesson-list {
  display: flex;
  flex-direction: column;
}
.lesson-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  padding: clamp(56px, 7vw, 88px) 0;
  border-bottom: 1px solid var(--rule);
  transition: background 300ms var(--ease);
}
.lesson-row:hover { background: var(--hover); }
@media (max-width: 720px) {
  .lesson-row { grid-template-columns: 1fr; gap: 16px; }
}
.lesson-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.lesson-meta .num,
.lesson-meta .time {
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.lesson-content h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 500;
  letter-spacing: -0.025em;
  margin: 0 0 12px;
}
.lesson-content p {
  font-size: 17px;
  color: var(--muted);
  margin: 0;
  max-width: 56ch;
}

/* ---------------- NEWSLETTER ---------------- */
.news-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--rule);
}
.news-row {
  border-bottom: 1px solid var(--rule);
}
.news-row a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding: clamp(28px, 3.5vw, 44px) 0;
  transition: background 250ms var(--ease), padding-left 300ms var(--ease-out);
}
.news-row a:hover {
  background: var(--hover);
  padding-left: 12px;
}
@media (max-width: 720px) {
  .news-row a { grid-template-columns: 1fr; gap: 8px; }
  .news-row a:hover { padding-left: 0; }
}
.news-row h3 {
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0;
}
.news-released {
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
  align-self: center;
}

/* ---------------- TEMPLATES ---------------- */
.templates {
  padding: 0 var(--gutter) clamp(120px, 14vw, 200px);
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.templates > article {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
@media (max-width: 780px) {
  .templates { grid-template-columns: 1fr; }
}
.template-card {
  padding: clamp(40px, 5vw, 56px);
  display: flex;
  flex-direction: column;
  min-height: 280px;
  transition: background 300ms var(--ease);
}
.template-card:hover { background: var(--hover); }
.template-card-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 16px;
}
.template-card-head .num {
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.template-card-head h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  font-weight: 500;
  letter-spacing: -0.025em;
  margin: 0;
}
.template-card p {
  font-size: 16px;
  color: var(--muted);
  margin: 0 0 auto;
  max-width: 38ch;
  line-height: 1.5;
}
.dl-row {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}
.dl {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--rule);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  background: var(--paper);
  transition: border-color 200ms var(--ease), background 200ms var(--ease), transform 250ms var(--ease-out);
}
.dl:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}
.dl svg { transition: transform 300ms var(--ease-out); }
.dl:hover svg { transform: translateY(2px); }

/* ---------------- PURPOSE ---------------- */
.purpose-hero {
  padding: clamp(96px, 14vw, 180px) var(--gutter) clamp(56px, 8vw, 120px);
  max-width: 1200px;
  margin: 0 auto;
}
.purpose-opening {
  font-size: clamp(48px, 8vw, 112px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 0 0 clamp(28px, 4vw, 48px);
  max-width: 18ch;
}
.purpose-opening span { display: block; }
.purpose-goals {
  padding: 0 var(--gutter) clamp(120px, 14vw, 200px);
  max-width: 1100px;
  margin: 0 auto;
}
.purpose-goals .section-head {
  padding-bottom: clamp(24px, 3vw, 40px);
}
.goals-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--rule);
}
.goal-row {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 24px;
  padding: clamp(48px, 6vw, 80px) 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
@media (max-width: 720px) {
  .goal-row { grid-template-columns: 1fr; gap: 12px; }
}
.goal-num {
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.goal-content h2 {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 16px;
  max-width: 24ch;
}
.goal-content p {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.55;
  color: var(--muted);
  margin: 0;
  max-width: 56ch;
}

/* ---------------- ABOUT ---------------- */
.about-blocks {
  padding: 0 var(--gutter) clamp(120px, 14vw, 200px);
  max-width: 880px;
  margin: 0 auto;
}
.about-block {
  padding: clamp(48px, 6vw, 80px) 0;
  border-top: 1px solid var(--rule);
}
.about-block:last-child { border-bottom: 1px solid var(--rule); }
.about-block .eyebrow { display: block; margin-bottom: 20px; }
.about-block p {
  font-size: 19px;
  line-height: 1.55;
  margin: 0 0 24px;
  max-width: 58ch;
}
.about-block p:last-child { margin-bottom: 0; }

.source-list { list-style: none; padding: 0; margin: 12px 0 0; }
.source-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.source-list li:first-child { border-top: 1px solid var(--rule); }
.source-list a {
  font-size: 17px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: opacity 200ms var(--ease);
}
.source-list a:hover { opacity: 0.65; }
.source-list .ext {
  font-size: 13px;
  color: var(--muted);
}
.source-list .src-note {
  font-size: 14px;
  color: var(--muted);
}

/* ---------------- GLOSSARY ---------------- */
html[lang="en"] .glossary-ja { display: none; }
html[lang="ja"] .glossary-en { display: none; }

.glossary {
  padding: 0 var(--gutter) clamp(120px, 14vw, 200px);
  max-width: 880px;
  margin: 0 auto;
}
.glossary dl {
  margin: 0;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.4fr);
}
.glossary dt {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin: 0;
  padding: 28px 32px 28px 0;
  border-bottom: 1px solid var(--rule);
  scroll-margin-top: 100px;
}
.glossary dd {
  margin: 0;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
  max-width: 60ch;
}
@media (max-width: 720px) {
  .glossary dl { grid-template-columns: 1fr; }
  .glossary dt {
    padding: 28px 0 8px;
    border-bottom: none;
  }
  .glossary dd { padding: 0 0 28px; }
}
.small-note {
  font-size: 13px !important;
  color: var(--muted);
  margin-top: 16px !important;
  letter-spacing: 0.01em;
}

/* ---------------- READING LIST ---------------- */
.reading-list {
  padding: 0 var(--gutter) clamp(120px, 14vw, 200px);
  max-width: 1100px;
  margin: 0 auto;
}
.reading-list-inner {
  border-top: 1px solid var(--rule);
  padding-top: clamp(48px, 6vw, 80px);
}
.reading-list h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.reading-list .lede {
  font-size: 16px;
  color: var(--muted);
  margin: 0 0 40px;
}
.reading-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
}
@media (max-width: 720px) {
  .reading-list ul { grid-template-columns: 1fr; }
}
.reading-list li {
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
}
.reading-list li:nth-child(2n) { border-right: none; }
@media (max-width: 720px) {
  .reading-list li { border-right: none; }
}
.reading-list a {
  display: block;
  padding: 28px 24px 28px 0;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: padding-left 300ms var(--ease-out), background 250ms var(--ease);
}
.reading-list li:nth-child(2n) a { padding-left: 24px; padding-right: 0; }
@media (max-width: 720px) {
  .reading-list a { padding: 24px 0; }
  .reading-list li:nth-child(2n) a { padding-left: 0; }
}
.reading-list a:hover {
  background: var(--hover);
  padding-left: 12px;
}
.reading-list .src-note {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
}
.reading-list .ext {
  font-size: 12px;
  color: var(--muted);
  margin-left: 6px;
}

/* ---------------- NEWSLETTER COMING-SOON ---------------- */
.news-intro {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 32px;
  padding: 0 var(--gutter);
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}
.news-row.is-coming {
  cursor: default;
  pointer-events: none;
}
.news-row.is-coming:hover {
  background: transparent;
  padding-left: 0;
}
.news-tag {
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
  border: 1px solid var(--rule);
  padding: 4px 8px;
  border-radius: 999px;
}

/* ---------------- FOOTER ---------------- */
footer {
  border-top: 1px solid var(--rule);
  padding: 32px var(--gutter);
}
.footer-purpose {
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 28px;
}
.footer-purpose a {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--ink);
  padding: 6px 0;
  position: relative;
  transition: opacity 200ms var(--ease);
}
.footer-purpose a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 300ms var(--ease-out);
}
.footer-purpose a:hover::after { transform: scaleX(1); }

.footer-row {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}
.footer-disclaimer {
  max-width: 1400px;
  margin: 16px auto 0;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.01em;
}

::selection { background: var(--ink); color: var(--paper); }

/* ---------------- ANIMATIONS ---------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out);
  will-change: opacity, transform;
}
[data-reveal].in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal], [data-stagger] > span {
    opacity: 1 !important;
    transform: none !important;
  }
  body { opacity: 1 !important; }
}