/*
 * Local readability prototype inspired by editorial landing-page systems.
 * Keep this stylesheet isolated until the direction is approved.
 */

:root {
  --readability-measure: 66ch;
  --readability-shell: 1180px;
  --cp-bg: #f4f1ec;
  --cp-bg-elevated: #fbf9f5;
  --cp-surface: #fffdf9;
  --cp-surface-soft: #f2eee8;
  --cp-border: #d8d2ca;
  --cp-border-strong: #817b75;
  --cp-text: #211f1d;
  --cp-text-muted: #625e59;
  --cp-text-soft: #4f4b47;
  --cp-warning: #bd3f29;
  --cp-accent-fg: #ffffff;
}

html[data-theme="dark"] {
  --cp-bg: #050608;
  --cp-bg-elevated: #090b0f;
  --cp-surface: #080a0d;
  --cp-surface-soft: #0e1218;
  --cp-border: #222934;
  --cp-border-strong: #4b5666;
  --cp-text: #f3f7fa;
  --cp-text-muted: #a6b0bc;
  --cp-text-soft: #ced6de;
  --cp-warning: #ff5f6d;
  --cp-accent-fg: #050608;
  --cp-overlay: rgba(5, 6, 8, 0.92);
  --cp-panel: rgba(8, 10, 13, 0.84);
  --cp-panel-strong: rgba(8, 10, 13, 0.98);
}

html { background: var(--cp-bg); }

body {
  background: var(--cp-bg);
  font-family: "Inter", "Segoe UI Variable Text", Aptos, "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before { background: var(--cp-bg); }
html[data-theme="dark"] body::before {
  background:
    radial-gradient(circle at 8% 6%, rgba(61, 232, 255, 0.045), transparent 30rem),
    radial-gradient(circle at 94% 28%, rgba(255, 94, 219, 0.035), transparent 34rem),
    var(--cp-bg);
  filter: none;
}

p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; }

.research-shell {
  width: min(var(--readability-shell), calc(100% - 64px));
}

.site-header {
  background: color-mix(in srgb, var(--cp-bg) 90%, transparent);
}
.reading-progress {
  position: absolute;
  right: 0;
  bottom: -2px;
  left: 0;
  z-index: 2;
  height: 3px;
  overflow: hidden;
  pointer-events: none;
}
.reading-progress span {
  width: 100%;
  height: 100%;
  display: block;
  background: var(--cp-warning);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.research-nav { min-height: 72px; }
.research-brand { font-size: 0.88rem; }
.research-links a {
  color: var(--cp-text-soft);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.075em;
}
.research-links a[aria-current="location"] {
  position: relative;
  color: var(--cp-warning);
}
.research-links a[aria-current="location"]::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 2px;
  background: var(--cp-warning);
}

.research-hero { padding-top: 104px; }
.research-hero.research-shell {
  width: min(1440px, calc(100% - 48px));
}
.program-label { margin-bottom: 58px; }
.research-hero-grid {
  grid-template-columns: 1fr;
  gap: 64px;
  align-items: center;
}
.research-hero-grid > div:first-child {
  width: min(960px, 100%);
  justify-self: center;
}
.model-figure {
  width: 100%;
  max-width: none;
  justify-self: center;
}
.identity {
  margin-bottom: 24px;
  color: var(--cp-text-soft);
  font-size: 0.78rem;
}
.research-hero h1 {
  margin-bottom: 24px;
  color: var(--cp-text-soft);
  font-size: 1.05rem;
}
.research-question {
  max-width: 12ch;
  margin-bottom: 34px;
  font-size: clamp(3.7rem, 5.7vw, 4.8rem);
  font-weight: 520;
  line-height: 0.96;
  letter-spacing: -0.052em;
}
.research-lede {
  max-width: 56ch;
  margin-bottom: 38px;
  color: var(--cp-text-soft);
  font-size: 1.14rem;
  line-height: 1.65;
}
.research-button {
  min-height: 48px;
  padding-inline: 18px;
  font-size: 0.74rem;
}

.trajectory-figure {
  background: var(--cp-bg-elevated);
}
.trajectory-chart { min-height: 350px; }
.transformer-figure-head {
  min-height: 112px;
  align-items: flex-start;
  gap: 40px;
  padding: 20px;
  text-transform: none;
}
.transformer-figure-head > div {
  min-width: 0;
  display: flex;
  flex: 1;
  flex-direction: column;
}
.transformer-figure-head > div:last-child {
  max-width: 360px;
  text-align: right;
}
.transformer-figure-head span {
  margin-bottom: 8px;
  color: var(--cp-warning);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.transformer-figure-head strong {
  max-width: 30ch;
  color: var(--cp-text);
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.35;
}
.transformer-figure-head > div:last-child strong {
  margin-left: auto;
  color: var(--cp-text-soft);
  font-size: 0.92rem;
  font-weight: 500;
}
.transformer-reading-key {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid var(--cp-border);
}
.transformer-reading-key span {
  min-width: 0;
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-right: 1px solid var(--cp-border);
  color: var(--cp-text-muted);
  font-size: 0.72rem;
  font-weight: 600;
}
.transformer-reading-key span:last-child { border-right: 0; }
.transformer-reading-key b {
  color: var(--cp-warning);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
}
.transformer-canvas {
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-color: var(--cp-border-strong) transparent;
  scrollbar-width: thin;
}
.transformer-scroll-hint { display: none; }
.transformer-chart {
  --transformer-cyan: #00788a;
  --transformer-magenta: #a83d61;
  width: 100%;
  min-height: 350px;
  padding: 18px;
  color: var(--cp-text-muted);
}
html[data-theme="dark"] .transformer-chart {
  --transformer-cyan: #3de8ff;
  --transformer-magenta: #ff5edb;
}
.transformer-chart * { vector-effect: non-scaling-stroke; }
.transformer-grid line {
  stroke: color-mix(in srgb, var(--cp-border) 52%, transparent);
  stroke-width: 0.8;
}
.transformer-zone {
  fill: color-mix(in srgb, var(--cp-text) 2%, transparent);
  stroke: color-mix(in srgb, var(--cp-border-strong) 62%, transparent);
  stroke-width: 0.8;
  stroke-dasharray: 4 4;
}
.transformer-zone-label,
.transformer-stage-labels text,
.transformer-tag,
.transformer-node-sub,
.transformer-residual-label {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  letter-spacing: 0.08em;
}
.transformer-zone-label {
  fill: var(--cp-text-muted);
  font-size: 8px;
  font-weight: 600;
}
.transformer-connector {
  fill: none;
  stroke: var(--cp-text-muted);
  stroke-width: 1.2;
}
.transformer-connector-accent { stroke: var(--transformer-cyan); }
.transformer-connector-link { stroke: var(--transformer-magenta); }
.transformer-source-connector {
  stroke-width: 1;
  stroke-dasharray: 4 3;
}
.transformer-arrow-marker { fill: var(--cp-text-muted); }
.transformer-arrow-marker-accent { fill: var(--transformer-cyan); }
.transformer-arrow-marker-link { fill: var(--transformer-magenta); }
.transformer-node-mask { fill: var(--cp-bg-elevated); }
.transformer-node-box {
  fill: color-mix(in srgb, var(--cp-surface-soft) 58%, var(--cp-bg-elevated));
  stroke: var(--cp-border-strong);
  stroke-width: 1;
}
.transformer-tag-box {
  fill: transparent;
  stroke: color-mix(in srgb, var(--cp-text-muted) 58%, transparent);
  stroke-width: 0.8;
}
.transformer-tag {
  fill: var(--cp-text-muted);
  font-size: 8px;
  text-anchor: middle;
}
.transformer-node-name {
  fill: var(--cp-text);
  font-family: "Inter", "Segoe UI Variable Text", Aptos, "Segoe UI", sans-serif;
  font-size: 12px;
  font-weight: 600;
  text-anchor: middle;
}
.transformer-node-sub {
  fill: var(--cp-text-muted);
  font-size: 8px;
  text-anchor: middle;
}
.transformer-source-name {
  fill: var(--cp-text);
  font-family: "Inter", "Segoe UI Variable Text", Aptos, "Segoe UI", sans-serif;
  font-size: 8px;
  font-weight: 600;
  text-anchor: middle;
}
.transformer-source-node .transformer-node-box {
  fill: color-mix(in srgb, var(--cp-text) 2%, var(--cp-bg-elevated));
  stroke: color-mix(in srgb, var(--cp-border-strong) 76%, transparent);
  stroke-dasharray: 4 3;
}
.transformer-node-attention .transformer-node-box {
  fill: color-mix(in srgb, var(--transformer-cyan) 9%, var(--cp-bg-elevated));
  stroke: var(--transformer-cyan);
}
.transformer-node-attention .transformer-tag-box { stroke: var(--transformer-cyan); }
.transformer-node-attention .transformer-tag { fill: var(--transformer-cyan); }
.transformer-node-output .transformer-node-box {
  fill: color-mix(in srgb, var(--transformer-magenta) 9%, var(--cp-bg-elevated));
  stroke: var(--transformer-magenta);
}
.transformer-node-output .transformer-tag-box { stroke: var(--transformer-magenta); }
.transformer-node-output .transformer-tag { fill: var(--transformer-magenta); }
.transformer-residual {
  fill: color-mix(in srgb, var(--cp-warning) 7%, var(--cp-bg-elevated));
  stroke: color-mix(in srgb, var(--cp-warning) 52%, var(--cp-border));
  stroke-width: 0.8;
  stroke-dasharray: 4 3;
}
.transformer-residual-label {
  fill: var(--cp-warning);
  font-size: 8px;
  font-weight: 600;
  text-anchor: middle;
}
.transformer-stage-labels text {
  fill: var(--cp-text);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-anchor: middle;
}
.transformer-stage-chip {
  fill: color-mix(in srgb, var(--cp-warning) 9%, var(--cp-bg-elevated));
  stroke: color-mix(in srgb, var(--cp-warning) 52%, var(--cp-border));
  stroke-width: 0.8;
}
.transformer-stage-chip-core {
  fill: color-mix(in srgb, var(--transformer-cyan) 9%, var(--cp-bg-elevated));
  stroke: color-mix(in srgb, var(--transformer-cyan) 62%, var(--cp-border));
}
.transformer-stage-chip-output {
  fill: color-mix(in srgb, var(--transformer-magenta) 9%, var(--cp-bg-elevated));
  stroke: color-mix(in srgb, var(--transformer-magenta) 62%, var(--cp-border));
}
.model-stats strong {
  font-size: 0.88rem;
  line-height: 1.35;
}
.figure-note {
  font-size: 0.88rem;
  line-height: 1.55;
}
.hero-status { margin-top: 80px; }
.hero-status div { padding-block: 21px; }
.hero-status small { font-size: 0.69rem; }
.hero-status span { font-size: 0.94rem; }

.research-section,
.contact-band { scroll-margin-top: 72px; }
.research-section { padding-bottom: 128px; }
.section-rail {
  position: relative;
  min-height: 78px;
  grid-template-columns: 92px minmax(0, 1fr);
  margin-bottom: 88px;
  border-top: 1px solid var(--cp-border);
  border-bottom-color: var(--cp-border-strong);
  background: color-mix(in srgb, var(--cp-bg-elevated) 78%, var(--cp-bg));
  box-shadow: 0 20px 50px -46px color-mix(in srgb, var(--cp-text) 42%, transparent);
}
.section-rail span:first-child {
  border-right: 0;
  background: var(--cp-warning);
  color: var(--cp-accent-fg);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.14em;
}
.section-rail span:last-child {
  gap: 24px;
  padding-inline: 28px;
  color: var(--cp-text);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}
.section-rail span:last-child::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, var(--cp-border-strong), transparent);
}
.section-heading {
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: clamp(56px, 7vw, 100px);
  margin-bottom: 70px;
}
.section-heading h2 {
  max-width: 18ch;
  font-size: clamp(3rem, 4.4vw, 3.75rem);
  font-weight: 520;
  line-height: 1.04;
  letter-spacing: -0.042em;
}
.section-heading p {
  max-width: 58ch;
  margin-top: 8px;
  color: var(--cp-text-soft);
  font-size: 1.08rem;
  line-height: 1.72;
}

.project-entry { min-height: 132px; }
.project-entry > span,
.project-entry > div { padding: 24px; }
.project-name strong {
  margin-bottom: 8px;
  font-size: 1.72rem;
  font-weight: 520;
  line-height: 1.18;
  letter-spacing: -0.025em;
}
.project-name small {
  display: block;
  max-width: 58ch;
  color: var(--cp-text-muted);
  font-size: 0.94rem;
  line-height: 1.55;
}
.project-category { font-size: 0.78rem; line-height: 1.45; }
.reserved-projects-control {
  padding: 14px;
  border-bottom: 1px solid var(--cp-border);
  background: color-mix(in srgb, var(--cp-bg-elevated) 78%, var(--cp-bg));
}
.reserved-projects-toggle {
  width: 100%;
  min-height: 72px;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 44px;
  align-items: center;
  gap: 18px;
  padding: 0 20px;
  border: 1px solid var(--cp-border);
  background: transparent;
  color: var(--cp-text);
  text-align: left;
  cursor: pointer;
}
.reserved-projects-toggle:hover {
  border-color: var(--cp-warning);
  background: color-mix(in srgb, var(--cp-warning) 7%, var(--cp-bg-elevated));
}
.reserved-projects-kicker {
  color: var(--cp-warning);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.reserved-projects-toggle strong {
  font-size: 1.05rem;
  font-weight: 560;
}
.reserved-projects-icon {
  display: grid;
  place-items: center;
  color: var(--cp-warning);
  font-size: 1.6rem;
  line-height: 1;
}
.reserved-projects-set[hidden] { display: none; }
.project-entry-reserved {
  background: color-mix(in srgb, var(--cp-surface-soft) 42%, transparent);
}

.learning-command {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: 12px;
  border: 1px solid var(--cp-border-strong);
  background:
    radial-gradient(circle at 88% 6%, color-mix(in srgb, var(--cp-warning) 13%, transparent), transparent 230px),
    linear-gradient(145deg, color-mix(in srgb, var(--cp-bg-elevated) 94%, var(--cp-warning) 2%), var(--cp-bg-elevated));
  box-shadow:
    0 28px 70px -52px color-mix(in srgb, var(--cp-text) 58%, transparent),
    0 0 0 1px color-mix(in srgb, var(--cp-warning) 8%, transparent);
}
.learning-command::before {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  left: -1px;
  height: 4px;
  z-index: 3;
  background: linear-gradient(90deg, var(--cp-warning) 0 28%, color-mix(in srgb, var(--cp-warning) 35%, transparent) 50%, transparent 74%);
  background-size: 160% 100%;
  animation: radar-sweep 7s ease-in-out infinite;
}
.learning-command::after {
  content: "";
  position: absolute;
  top: -146px;
  right: -116px;
  z-index: 0;
  width: 300px;
  height: 300px;
  border: 1px solid color-mix(in srgb, var(--cp-warning) 22%, transparent);
  border-radius: 50%;
  box-shadow:
    0 0 0 42px color-mix(in srgb, var(--cp-warning) 6%, transparent),
    0 0 0 84px color-mix(in srgb, var(--cp-warning) 3%, transparent);
  opacity: 0.72;
  pointer-events: none;
  animation: radar-breathe 5.5s ease-in-out infinite;
}
.learning-command > * {
  position: relative;
  z-index: 1;
}
.learning-command-head {
  min-height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--cp-border);
}
.learning-command-head > div > span {
  display: block;
  margin-bottom: 8px;
  color: var(--cp-warning);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.learning-command-head strong {
  display: block;
  max-width: 28ch;
  font-size: 1.42rem;
  font-weight: 560;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.learning-command-head p {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  color: var(--cp-text-soft);
  font-size: 0.76rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.learning-command-head p span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cp-warning);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--cp-warning) 14%, transparent);
  animation: signal-pulse 2.2s ease-out infinite;
}
.learning-command .learning-source {
  margin-bottom: 10px;
  border-color: var(--cp-border);
  background: var(--cp-bg);
}
.learning-command .learning-source > * {
  position: relative;
  overflow: hidden;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}
.learning-command .learning-source > *::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 0;
  left: 18px;
  height: 2px;
  background: linear-gradient(90deg, var(--cp-warning), transparent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms ease;
}
.learning-command .learning-source > *:hover {
  border-color: color-mix(in srgb, var(--cp-warning) 34%, var(--cp-border));
  background: color-mix(in srgb, var(--cp-warning) 6%, var(--cp-bg));
  transform: translateY(-2px);
}
.learning-command .learning-source > *:hover::after { transform: scaleX(1); }
.learning-source > * { min-height: 104px; }
.learning-source span { font-size: 0.68rem; }
.learning-source strong { font-size: 1rem; line-height: 1.45; }
.learning-source a { font-size: 0.84rem; line-height: 1.5; }
.learning-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--cp-border);
  background: color-mix(in srgb, var(--cp-bg-elevated) 72%, var(--cp-bg));
}
.learning-tabs button {
  --tab-accent: var(--cp-warning);
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: 112px;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  grid-template-rows: 1fr;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border: 1px solid transparent;
  background:
    radial-gradient(circle at 8% 16%, color-mix(in srgb, var(--tab-accent) 8%, transparent), transparent 110px),
    color-mix(in srgb, var(--cp-bg) 96%, var(--tab-accent) 2%);
  color: var(--cp-text);
  font-size: 0.76rem;
  text-align: left;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}
.learning-tabs button[data-learning-tab="security"] {
  --tab-accent: #9c5d14;
}
.learning-tabs button[data-learning-tab="papers"] {
  --tab-accent: #a83d61;
}
html[data-theme="dark"] .learning-tabs button[data-learning-tab="security"] {
  --tab-accent: #ffd166;
}
html[data-theme="dark"] .learning-tabs button[data-learning-tab="papers"] {
  --tab-accent: #ff5edb;
}
html[data-theme="dark"] .learning-tabs button[data-learning-tab="systems"] {
  --tab-accent: #3de8ff;
}
.learning-tabs button::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--tab-accent);
  opacity: 0.34;
  transition: width 180ms ease, opacity 180ms ease;
}
.learning-tabs button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(112deg, transparent 24%, color-mix(in srgb, var(--tab-accent) 14%, transparent) 46%, transparent 66%);
  transform: translateX(-135%);
  transition: transform 600ms ease;
  pointer-events: none;
}
.learning-tabs button .learning-tab-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--tab-accent) 44%, var(--cp-border));
  background: color-mix(in srgb, var(--tab-accent) 8%, var(--cp-bg-elevated));
  color: var(--tab-accent);
  box-shadow: inset 0 0 20px color-mix(in srgb, var(--tab-accent) 5%, transparent);
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.learning-tab-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.learning-tab-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.learning-tab-copy small {
  color: var(--tab-accent);
  font-size: 0.6rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.learning-tab-copy strong {
  color: var(--cp-text);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.25;
  text-transform: uppercase;
}
.learning-tabs button .learning-tab-count {
  min-width: 34px;
  padding: 4px 7px;
  border: 1px solid color-mix(in srgb, var(--tab-accent) 36%, var(--cp-border));
  background: color-mix(in srgb, var(--tab-accent) 6%, var(--cp-bg));
  color: var(--cp-text-muted);
  font-size: 0.66rem;
  font-weight: 700;
  line-height: 1;
  text-align: center;
}
.learning-tabs button:hover {
  border-color: color-mix(in srgb, var(--tab-accent) 52%, var(--cp-border));
  background:
    radial-gradient(circle at 8% 16%, color-mix(in srgb, var(--tab-accent) 16%, transparent), transparent 130px),
    color-mix(in srgb, var(--tab-accent) 7%, var(--cp-bg-elevated));
  transform: translateY(-2px);
}
.learning-tabs button:hover::before { width: 5px; opacity: 1; }
.learning-tabs button:hover::after { transform: translateX(135%); }
.learning-tabs button:hover .learning-tab-icon {
  transform: rotate(-4deg) scale(1.06);
  box-shadow:
    inset 0 0 20px color-mix(in srgb, var(--tab-accent) 10%, transparent),
    0 8px 22px -14px color-mix(in srgb, var(--tab-accent) 72%, transparent);
}
.learning-tabs button[aria-selected="true"] {
  border-color: color-mix(in srgb, var(--tab-accent) 68%, var(--cp-border));
  background:
    radial-gradient(circle at 8% 16%, color-mix(in srgb, var(--tab-accent) 23%, transparent), transparent 150px),
    linear-gradient(135deg, color-mix(in srgb, var(--tab-accent) 16%, var(--cp-bg-elevated)), color-mix(in srgb, var(--tab-accent) 6%, var(--cp-bg-elevated)));
  box-shadow:
    inset 0 -3px 0 var(--tab-accent),
    0 12px 28px -18px color-mix(in srgb, var(--tab-accent) 82%, transparent),
    0 0 0 1px color-mix(in srgb, var(--tab-accent) 18%, transparent);
  transform: translateY(-2px);
}
.learning-tabs button[aria-selected="true"]::before { width: 5px; opacity: 1; }
.learning-tabs button[aria-selected="true"] .learning-tab-icon {
  border-color: var(--tab-accent);
  background: var(--tab-accent);
  color: var(--cp-accent-fg);
  box-shadow: 0 8px 24px -14px color-mix(in srgb, var(--tab-accent) 88%, transparent);
}
.learning-tabs button[aria-selected="true"] .learning-tab-count {
  border-color: var(--tab-accent);
  background: var(--tab-accent);
  color: var(--cp-accent-fg);
}
html[data-theme="dark"] .learning-command {
  border-color: #303a48;
  background:
    radial-gradient(circle at 88% 6%, color-mix(in srgb, var(--cp-warning) 17%, transparent), transparent 250px),
    linear-gradient(145deg, rgba(13, 16, 22, 0.98), rgba(7, 9, 13, 0.99));
  box-shadow:
    0 34px 90px -56px rgba(0, 0, 0, 0.95),
    0 0 0 1px rgba(61, 232, 255, 0.06),
    0 0 66px -48px rgba(255, 95, 109, 0.72);
}
html[data-theme="dark"] .learning-command-head > div > span,
html[data-theme="dark"] .learning-source span {
  text-shadow: 0 0 14px color-mix(in srgb, var(--cp-warning) 44%, transparent);
}
html[data-theme="dark"] .learning-tabs button {
  border-color: color-mix(in srgb, var(--tab-accent) 13%, var(--cp-border));
  background:
    radial-gradient(circle at 8% 16%, color-mix(in srgb, var(--tab-accent) 10%, transparent), transparent 120px),
    linear-gradient(145deg, rgba(12, 15, 20, 0.96), rgba(7, 9, 12, 0.98));
}
html[data-theme="dark"] .learning-tabs button[aria-selected="true"] {
  box-shadow:
    inset 0 -3px 0 var(--tab-accent),
    0 16px 34px -18px color-mix(in srgb, var(--tab-accent) 88%, transparent),
    0 0 0 1px color-mix(in srgb, var(--tab-accent) 25%, transparent),
    inset 0 0 36px color-mix(in srgb, var(--tab-accent) 7%, transparent);
}
html[data-theme="dark"] .learning-tabs button[aria-selected="true"] .learning-tab-copy small {
  text-shadow: 0 0 16px color-mix(in srgb, var(--tab-accent) 72%, transparent);
}
html[data-theme="dark"] .learning-tabs button[aria-selected="true"] .learning-tab-icon,
html[data-theme="dark"] .learning-tabs button[aria-selected="true"] .learning-tab-count {
  box-shadow:
    0 0 18px color-mix(in srgb, var(--tab-accent) 34%, transparent),
    0 8px 24px -14px color-mix(in srgb, var(--tab-accent) 92%, transparent);
}
.learning-panel { padding-top: 42px; }

@keyframes radar-sweep {
  0%, 100% { background-position: 100% 0; }
  50% { background-position: 0 0; }
}
@keyframes radar-breathe {
  0%, 100% { opacity: 0.52; transform: scale(0.96); }
  50% { opacity: 0.82; transform: scale(1.04); }
}
@keyframes signal-pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--cp-warning) 42%, transparent); }
  65%, 100% { box-shadow: 0 0 0 10px transparent; }
}
.learning-feature > * { padding: 32px; }
.learning-story > p:first-child { margin-bottom: 38px; }
.learning-story h3 {
  font-size: 2.35rem;
  font-weight: 520;
  line-height: 1.05;
  letter-spacing: -0.035em;
}
.learning-story > p:last-child,
.learning-impact p {
  font-size: 1rem;
  line-height: 1.65;
}
.learning-impact small { font-size: 0.72rem; line-height: 1.5; }
.learning-card {
  min-height: 310px;
  padding: 28px;
}
.learning-card > div { margin-bottom: 48px; font-size: 0.68rem; }
.learning-card h3 {
  font-size: 1.48rem;
  font-weight: 520;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.learning-card > p {
  color: var(--cp-text-muted);
  font-size: 0.94rem;
  line-height: 1.62;
}
.learning-card footer { font-size: 0.7rem; line-height: 1.45; }

.security-intro { min-height: 176px; padding: 30px; }
.security-intro h3 {
  max-width: 20ch;
  font-size: 2.1rem;
  font-weight: 520;
  line-height: 1.08;
  letter-spacing: -0.03em;
}
.security-intro a { font-size: 0.78rem; line-height: 1.45; }
.security-news > * { min-height: 265px; padding: 28px; }
.security-news-head h3 {
  font-size: 1.95rem;
  font-weight: 520;
  letter-spacing: -0.025em;
}
.security-news a strong { font-size: 1.12rem; line-height: 1.28; }
.security-news a p { font-size: 0.9rem; line-height: 1.6; }
.security-news a small { font-size: 0.7rem; line-height: 1.45; }

.paper-entry {
  min-height: 214px;
  grid-template-columns: 74px minmax(0, 1fr) 220px;
}
.paper-rank small {
  min-width: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 6px;
  background: var(--cp-warning);
  color: var(--cp-accent-fg);
  font-size: 0.7rem;
  font-weight: 750;
  line-height: 1;
  letter-spacing: 0.1em;
}
.paper-copy { padding: 30px 34px; }
.paper-authors { font-size: 0.68rem; line-height: 1.45; }
.paper-copy h3 {
  max-width: 34ch;
  margin-bottom: 16px;
  font-size: 1.55rem;
  font-weight: 520;
  line-height: 1.22;
  letter-spacing: -0.025em;
}
.paper-abstract {
  max-width: var(--readability-measure);
  margin-bottom: 22px;
  color: var(--cp-text-muted);
  font-size: 0.98rem;
  line-height: 1.65;
}
.js .paper-abstract[data-collapsible="true"]:not([data-expanded="true"]) {
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}
.paper-summary-toggle {
  width: fit-content;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: -4px 0 22px;
  padding: 7px 11px;
  border: 1px solid var(--cp-border);
  background: transparent;
  color: var(--cp-text-soft);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}
.paper-summary-toggle:hover {
  border-color: var(--cp-warning);
  color: var(--cp-warning);
}
.paper-summary-toggle[hidden] { display: none; }
.paper-summary-toggle span:last-child {
  color: var(--cp-warning);
  font-size: 1rem;
  line-height: 1;
}
.paper-copy footer { font-size: 0.7rem; line-height: 1.45; }
.paper-signal { padding: 28px; }
.paper-signal strong { font-size: 1.22rem; }
.paper-signal small { font-size: 0.74rem; line-height: 1.5; }

.axis-card {
  min-height: 260px;
  padding: 34px;
}
.axis-card h3 {
  font-size: 1.65rem;
  font-weight: 520;
  letter-spacing: -0.025em;
}
.axis-card p {
  max-width: 44ch;
  font-size: 1rem;
  line-height: 1.65;
}

.experience-summary div,
.credential-summary div,
.credential-summary > a {
  min-height: 102px;
  padding: 20px;
}
.experience-summary small,
.credential-summary small { font-size: 0.68rem; }
.experience-summary strong,
.credential-summary strong { font-size: 1rem; line-height: 1.4; }

.experience-heading { padding: 34px; }
.experience-heading h3 {
  font-size: 1.62rem;
  font-weight: 520;
  letter-spacing: -0.025em;
}
.experience-heading span { font-size: 0.84rem; line-height: 1.5; }
.experience-copy { padding: 34px 4vw; }
.experience-copy p,
.education-record > p {
  max-width: var(--readability-measure);
  color: var(--cp-text-soft);
  font-size: 1rem;
  line-height: 1.7;
}
.experience-copy li {
  font-size: 0.7rem;
  line-height: 1.35;
}
.education-record h3 {
  font-size: 1.52rem;
  font-weight: 520;
  letter-spacing: -0.02em;
}
.education-record div > span { font-size: 0.82rem; line-height: 1.5; }

.credential-card {
  min-height: 220px;
  padding: 28px;
}
.credential-card > div { font-size: 0.7rem; }
.credential-card h3 {
  font-size: 1.4rem;
  font-weight: 520;
  letter-spacing: -0.02em;
}
.credential-card p,
.credential-note {
  font-size: 0.9rem;
  line-height: 1.6;
}

.outside-item {
  min-height: 315px;
  padding: 32px;
}
.outside-item h3 {
  font-size: 1.62rem;
  font-weight: 520;
  letter-spacing: -0.02em;
}
.outside-item p {
  max-width: 46ch;
  font-size: 0.96rem;
  line-height: 1.65;
}
.outside-item a { font-size: 0.8rem; }

.contact-band { padding-block: 124px; }
.contact-layout h2 {
  max-width: 16ch;
  font-size: clamp(3.2rem, 5vw, 4.5rem);
  font-weight: 520;
  line-height: 1;
  letter-spacing: -0.045em;
}
.contact-layout div > p {
  max-width: 58ch;
  font-size: 1.08rem;
  line-height: 1.7;
}
.research-footer { font-size: 0.76rem; }

@media (max-width: 980px) {
  .research-shell { width: min(var(--readability-shell), calc(100% - 48px)); }
  .research-hero.research-shell { width: calc(100% - 32px); }
  .research-hero { padding-top: 80px; }
  .research-hero-grid { grid-template-columns: 1fr; }
  .research-question { max-width: 13ch; }
  .section-heading {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .section-heading h2 { max-width: 20ch; }
  .section-heading p { max-width: var(--readability-measure); }
  .paper-entry { grid-template-columns: 64px minmax(0, 1fr); }
  .paper-signal { padding: 16px 34px; }
}

@media (max-width: 700px) {
  body {
    font-size: 1rem;
    line-height: 1.65;
  }
  .research-shell { width: min(var(--readability-shell), calc(100% - 32px)); }
  .research-hero.research-shell { width: calc(100% - 20px); }
  .research-nav { min-height: 64px; }
  .research-links a { font-size: 0.8rem; }
  .research-links a[aria-current="location"] {
    box-shadow: inset 3px 0 0 var(--cp-warning);
  }
  .research-links a[aria-current="location"]::after { display: none; }
  .research-hero { padding-top: 58px; }
  .program-label { margin-bottom: 38px; }
  .transformer-chart {
    width: 680px;
    min-width: 680px;
    min-height: 320px;
    padding: 8px;
  }
  .transformer-figure-head {
    min-height: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 18px;
  }
  .transformer-figure-head > div:last-child {
    max-width: none;
    text-align: left;
  }
  .transformer-figure-head > div:last-child strong { margin-left: 0; }
  .transformer-reading-key {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .transformer-reading-key span:nth-child(2) { border-right: 0; }
  .transformer-reading-key span:nth-child(-n + 2) { border-bottom: 1px solid var(--cp-border); }
  .transformer-scroll-hint {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin: 0;
    padding: 12px 14px;
    border-bottom: 1px solid var(--cp-border);
    color: var(--cp-text-muted);
    font-size: 0.72rem;
    font-weight: 650;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .transformer-scroll-hint span {
    color: var(--cp-warning);
    font-size: 1rem;
  }
  .model-stats strong { font-size: 0.82rem; }
  .research-question {
    max-width: 12ch;
    font-size: clamp(2.4rem, 13vw, 3.7rem);
    line-height: 0.98;
    letter-spacing: -0.045em;
  }
  .research-lede { font-size: 1.06rem; line-height: 1.68; }
  .hero-status span { font-size: 0.9rem; }
  .research-section { padding-bottom: 96px; }
  .research-section,
  .contact-band { scroll-margin-top: 64px; }
  .section-rail {
    min-height: 70px;
    grid-template-columns: 64px minmax(0, 1fr);
    margin-bottom: 60px;
  }
  .section-rail span:first-child { font-size: 0.76rem; }
  .section-rail span:last-child {
    gap: 14px;
    padding-inline: 18px;
    font-size: 0.7rem;
  }
  .section-heading { margin-bottom: 52px; }
  .section-heading h2 {
    max-width: 18ch;
    font-size: clamp(2.2rem, 11vw, 2.55rem);
    line-height: 1.04;
  }
  .section-heading p { font-size: 1rem; line-height: 1.68; }
  .project-entry { min-height: 132px; }
  .project-name strong { font-size: 1.38rem; }
  .project-name small {
    display: block;
    font-size: 0.88rem;
    line-height: 1.5;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
  }
  .reserved-projects-control { padding: 10px; }
  .reserved-projects-toggle {
    min-height: 82px;
    grid-template-columns: 1fr 36px;
    gap: 8px;
    padding: 14px 16px;
  }
  .reserved-projects-kicker { grid-column: 1; }
  .reserved-projects-toggle strong { grid-column: 1; }
  .reserved-projects-icon {
    grid-column: 2;
    grid-row: 1 / 3;
  }
  .learning-command {
    padding: 8px;
  }
  .learning-command::after {
    top: -178px;
    right: -178px;
  }
  .learning-command-head {
    min-height: 126px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 24px 18px 20px;
  }
  .learning-command-head strong {
    max-width: 22ch;
    font-size: 1.3rem;
  }
  .learning-command-head p { font-size: 0.7rem; }
  .learning-source > * { min-height: 88px; }
  .learning-tabs {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 6px;
  }
  .learning-tabs button {
    min-height: 96px;
    grid-template-columns: 44px minmax(0, 1fr) auto;
    gap: 12px;
    padding: 14px;
    border: 1px solid transparent;
    font-size: 0.7rem;
  }
  .learning-tabs button .learning-tab-icon {
    width: 42px;
    height: 42px;
  }
  .learning-tab-icon svg {
    width: 22px;
    height: 22px;
  }
  .learning-tab-copy strong { font-size: 0.78rem; }
  .learning-tabs button[aria-selected="true"] {
    box-shadow:
      inset 3px 0 0 var(--tab-accent),
      0 12px 28px -18px color-mix(in srgb, var(--tab-accent) 82%, transparent);
  }
  .learning-story h3 { font-size: 1.95rem; }
  .learning-card { min-height: 260px; }
  .learning-card h3 { font-size: 1.35rem; }
  .learning-card > p { font-size: 0.92rem; }
  .security-intro h3 { font-size: 1.8rem; }
  .paper-entry { grid-template-columns: 46px minmax(0, 1fr); }
  .paper-copy { padding: 24px 22px; }
  .paper-copy h3 {
    max-width: none;
    font-size: 1.3rem;
    line-height: 1.25;
  }
  .paper-abstract { font-size: 0.94rem; line-height: 1.65; }
  .js .paper-abstract[data-collapsible="true"]:not([data-expanded="true"]) {
    -webkit-line-clamp: 4;
  }
  .paper-signal { padding: 16px 22px; }
  .axis-card p,
  .experience-copy p,
  .education-record > p { font-size: 0.96rem; }
  .credential-card p,
  .credential-note { font-size: 0.88rem; }
  .outside-item p { font-size: 0.94rem; }
  .contact-layout h2 { font-size: 2.7rem; }
}

@media (prefers-reduced-motion: reduce) {
  .learning-command::before,
  .learning-command::after,
  .learning-command-head p span {
    animation: none;
  }
  .learning-command .learning-source > *,
  .learning-tabs button {
    transition: none;
  }
}

@media (max-width: 420px) {
  .project-entry { grid-template-columns: 44px minmax(0, 1fr); }
  .project-code { grid-row: 1; }
  .project-name {
    padding: 18px !important;
    border-right: 0 !important;
  }
  .project-arrow { display: none !important; }
  .paper-entry { grid-template-columns: 1fr; }
  .paper-rank {
    grid-row: auto;
    flex-direction: row;
    justify-content: space-between;
    padding: 14px 18px;
    border-right: 0;
    border-bottom: 1px solid var(--cp-border);
  }
  .paper-rank small {
    margin: 0;
    min-width: 0;
    padding: 7px 10px;
    writing-mode: horizontal-tb;
  }
  .paper-copy,
  .paper-signal { grid-column: 1; }
}