:root {
  --ink: #07111f;
  --ink-2: #0b1829;
  --ink-3: #10243a;
  --paper: #f4f7f8;
  --white: #ffffff;
  --text: #102033;
  --muted: #5b6a7a;
  --line: #d6dfe5;
  --cyan: #66d9ee;
  --cyan-deep: #126278;
  --gold: #f1c36b;
  --gold-deep: #8a642b;
  --danger: #a84947;
  --header-height: 82px;
  --max-width: 1220px;
  --shadow: 0 28px 80px rgba(7, 17, 31, .12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
  margin: 0;
  color: var(--text);
  background: var(--paper);
  font-family: Inter, Pretendard, "Noto Sans KR", "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

h1,
h2,
h3,
h4,
p,
blockquote,
figure,
dl,
dd {
  margin-top: 0;
}

h1,
h2,
h3,
h4,
strong {
  font-weight: 650;
}

h1,
h2,
h3 {
  letter-spacing: -.035em;
  line-height: 1.06;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  transform: translateY(-160%);
  padding: 10px 16px;
  color: var(--ink);
  background: var(--white);
  border-radius: 6px;
}

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

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(24px, 4vw, 64px);
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, .13);
  background: linear-gradient(180deg, rgba(3, 10, 20, .62), rgba(3, 10, 20, 0));
  transition: height .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.site-header.is-scrolled {
  height: 70px;
  color: var(--ink);
  background: rgba(248, 250, 251, .94);
  border-color: rgba(7, 17, 31, .1);
  box-shadow: 0 8px 28px rgba(7, 17, 31, .08);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.header-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--cyan));
  box-shadow: 0 0 14px rgba(102, 217, 238, .6);
}

.brand {
  display: inline-flex;
  gap: 13px;
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  width: 33px;
  height: 33px;
  display: inline-block;
}

.brand-mark span {
  position: absolute;
  left: 2px;
  width: 29px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transform-origin: left center;
}

.brand-mark span:nth-child(1) {
  top: 8px;
}

.brand-mark span:nth-child(2) {
  top: 16px;
  width: 24px;
}

.brand-mark span:nth-child(3) {
  top: 16px;
  left: 24px;
  width: 13px;
  transform: rotate(42deg);
  color: var(--cyan);
}

.brand-copy {
  display: grid;
  line-height: 1.05;
}

.brand-copy strong {
  font-size: 18px;
  letter-spacing: .16em;
}

.brand-copy small {
  margin-top: 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .11em;
  text-transform: uppercase;
  opacity: .67;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 34px);
}

.primary-nav a {
  position: relative;
  color: inherit;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: .035em;
  text-decoration: none;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .2s ease;
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after,
.primary-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.primary-nav .nav-korean {
  padding: 8px 13px 9px;
  border: 1px solid rgba(255, 255, 255, .38);
  border-radius: 999px;
}

.site-header.is-scrolled .nav-korean {
  border-color: rgba(7, 17, 31, .2);
}

.primary-nav .nav-korean::after {
  display: none;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-button span:not(.sr-only) {
  display: block;
  width: 24px;
  height: 1px;
  margin: 7px auto;
  background: currentColor;
  transition: transform .2s ease;
}

.hero {
  position: relative;
  min-height: min(920px, 100svh);
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
}

.hero-image,
.hero-scrim,
.hero-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
  filter: saturate(.88) contrast(1.05);
  transform: scale(1.012);
}

.hero-scrim {
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(3, 10, 20, .98) 0%, rgba(3, 10, 20, .89) 31%, rgba(3, 10, 20, .46) 58%, rgba(3, 10, 20, .12) 100%),
    linear-gradient(180deg, rgba(3, 10, 20, .3), transparent 48%, rgba(3, 10, 20, .76));
}

.hero-grid {
  z-index: 2;
  opacity: .11;
  background-image:
    linear-gradient(rgba(255, 255, 255, .13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .13) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(90deg, #000, transparent 65%);
}

.hero-content {
  position: relative;
  z-index: 3;
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: clamp(150px, 18vh, 205px) 0 145px;
}

.eyebrow,
.section-number,
.mini-label {
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .18em;
  line-height: 1.3;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: rgba(255, 255, 255, .72);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(102, 217, 238, .75);
}

.hero-kicker {
  margin: clamp(32px, 5vh, 52px) 0 0;
  color: rgba(255, 255, 255, .76);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(26px, 3.1vw, 48px);
  font-style: italic;
  line-height: 1.12;
  letter-spacing: -.025em;
}

.hero h1 {
  max-width: 760px;
  margin: 0 0 32px;
  font-size: clamp(58px, 7.7vw, 112px);
  font-weight: 560;
  letter-spacing: -.062em;
  line-height: .9;
}

.hero h1 em {
  color: var(--gold);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.hero-lede {
  max-width: 685px;
  margin-bottom: 36px;
  color: rgba(255, 255, 255, .79);
  font-size: clamp(17px, 1.55vw, 22px);
  line-height: 1.55;
}

.hero-actions,
.collaboration-actions,
.current-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease;
}

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

.button-primary {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

.button-primary:hover {
  background: #ffd789;
  border-color: #ffd789;
}

.button-ghost {
  color: var(--white);
  background: rgba(7, 17, 31, .25);
  border-color: rgba(255, 255, 255, .3);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.button-ghost:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .55);
}

.button-dark {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.button-dark:hover {
  background: var(--ink-3);
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 760px;
  margin-top: clamp(48px, 7vh, 76px);
  border-top: 1px solid rgba(255, 255, 255, .18);
  border-bottom: 1px solid rgba(255, 255, 255, .18);
}

.status-strip > div {
  padding: 18px 20px 18px 0;
}

.status-strip > div + div {
  padding-left: 20px;
  border-left: 1px solid rgba(255, 255, 255, .18);
}

.status-label {
  display: block;
  margin-bottom: 4px;
  color: rgba(255, 255, 255, .52);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.status-strip strong {
  font-size: 13px;
  letter-spacing: .01em;
}

.hero-caption {
  position: absolute;
  z-index: 3;
  right: clamp(24px, 4vw, 64px);
  bottom: 38px;
  width: min(405px, 40vw);
  margin: 0;
  color: rgba(255, 255, 255, .48);
  font-size: 11px;
  line-height: 1.45;
  text-align: right;
}

.scroll-cue {
  position: absolute;
  z-index: 3;
  bottom: 34px;
  left: clamp(24px, 4vw, 64px);
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: rgba(255, 255, 255, .64);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .18em;
  text-decoration: none;
  text-transform: uppercase;
}

.scroll-cue i {
  position: relative;
  width: 44px;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, .3);
}

.scroll-cue i::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gold);
  animation: cue 2.4s ease-in-out infinite;
}

@keyframes cue {
  0% { transform: translateX(-105%); }
  55%, 100% { transform: translateX(105%); }
}

.section {
  position: relative;
  padding: clamp(92px, 11vw, 160px) 0;
}

.section-shell {
  position: relative;
  z-index: 2;
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

.section-light {
  background: var(--paper);
}

.section-paper {
  background: #fff;
}

.section-ink {
  overflow: hidden;
  color: rgba(255, 255, 255, .78);
  background:
    radial-gradient(circle at 82% 12%, rgba(38, 120, 148, .18), transparent 32%),
    var(--ink);
}

.section-ink::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .06;
  background-image:
    linear-gradient(rgba(255, 255, 255, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .12) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, transparent, #000, transparent);
}

.section-heading {
  display: grid;
  grid-template-columns: 205px minmax(0, 1fr);
  column-gap: 48px;
  max-width: 1010px;
  margin-bottom: clamp(58px, 7vw, 88px);
}

.section-heading .section-number {
  grid-row: 1 / span 2;
  margin-top: 9px;
}

.section-number,
.mini-label {
  color: var(--cyan-deep);
}

.section-heading h2,
.origin-copy h2,
.korean-title h2,
.collaboration-shell h2 {
  margin-bottom: 24px;
  font-size: clamp(40px, 5.2vw, 72px);
  font-weight: 590;
}

.section-heading > p:last-child {
  max-width: 745px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.section-heading-light h2 {
  color: var(--white);
}

.section-heading-light .section-number {
  color: var(--cyan);
}

.section-heading-light > p:last-child {
  color: rgba(255, 255, 255, .58);
}

.problem-grid {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr);
  gap: clamp(50px, 7vw, 96px);
  align-items: center;
}

.problem-copy {
  max-width: 560px;
}

.problem-copy .lead {
  color: var(--text);
  font-size: 22px;
  line-height: 1.58;
}

.problem-copy > p:not(.lead) {
  color: var(--muted);
}

.problem-copy blockquote {
  margin: 38px 0 0;
  padding: 5px 0 5px 24px;
  color: var(--ink);
  border-left: 2px solid var(--gold-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  line-height: 1.5;
}

.problem-copy blockquote span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-family: Inter, Pretendard, "Noto Sans KR", sans-serif;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.comparison-card {
  min-height: 520px;
  padding: clamp(28px, 4vw, 52px);
  color: var(--white);
  background:
    linear-gradient(145deg, rgba(19, 44, 70, .97), rgba(5, 14, 27, .99)),
    var(--ink);
  border: 1px solid rgba(255, 255, 255, .08);
  box-shadow: var(--shadow);
}

.comparison-top {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.comparison-top span {
  padding: 7px 11px;
  color: rgba(255, 255, 255, .62);
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 720;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.branch-visual {
  position: relative;
  height: 270px;
  margin: 10px 0 6px;
}

.branch-trunk {
  position: absolute;
  top: 50%;
  left: 2%;
  width: 45%;
  height: 2px;
  background: rgba(255, 255, 255, .34);
}

.branch-trunk i,
.branch-path i {
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  border: 2px solid rgba(255, 255, 255, .6);
  border-radius: 50%;
  background: var(--ink-2);
  transform: translate(-50%, -50%);
}

.branch-trunk i:nth-child(1) { left: 4%; }
.branch-trunk i:nth-child(2) { left: 50%; }
.branch-trunk i:nth-child(3) { left: 96%; }

.branch-path {
  position: absolute;
  left: 46%;
  width: 45%;
  height: 2px;
  transform-origin: left;
}

.branch-path::before {
  content: "";
  position: absolute;
  inset: 0;
  background: currentColor;
  box-shadow: 0 0 15px currentColor;
}

.branch-path i {
  right: -10px;
  left: auto;
  border-color: currentColor;
  background: currentColor;
}

.branch-path span {
  position: absolute;
  right: -12px;
  bottom: 16px;
  color: currentColor;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 28px;
}

.branch-accepted {
  top: 50%;
  color: var(--gold);
  transform: rotate(-27deg);
}

.branch-accepted span {
  transform: rotate(27deg);
}

.branch-rejected {
  top: 50%;
  color: var(--cyan);
  transform: rotate(27deg);
}

.branch-rejected span {
  top: 16px;
  bottom: auto;
  transform: rotate(-27deg);
}

.comparison-rows {
  border-top: 1px solid rgba(255, 255, 255, .13);
}

.comparison-rows > div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .13);
}

.comparison-rows span {
  color: rgba(255, 255, 255, .5);
  font-size: 12px;
}

.comparison-rows strong {
  font-size: 13px;
  text-align: right;
}

.method-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0 0 84px;
  padding: 0;
  list-style: none;
}

.method-steps li {
  position: relative;
  min-height: 310px;
  padding: 24px 28px 30px;
  border-top: 1px solid rgba(255, 255, 255, .17);
  border-bottom: 1px solid rgba(255, 255, 255, .17);
}

.method-steps li + li {
  border-left: 1px solid rgba(255, 255, 255, .17);
}

.step-index {
  position: absolute;
  top: 20px;
  right: 20px;
  color: rgba(255, 255, 255, .27);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .13em;
}

.step-icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin: 56px 0 38px;
  place-items: center;
  color: var(--cyan);
  border: 1px solid rgba(102, 217, 238, .38);
  border-radius: 50%;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
}

.method-steps h3 {
  margin-bottom: 16px;
  color: var(--white);
  font-size: 21px;
}

.method-steps p {
  margin: 0;
  color: rgba(255, 255, 255, .5);
  font-size: 14px;
  line-height: 1.65;
}

.lineage-figure {
  overflow: hidden;
  margin: 0;
  background: rgba(255, 255, 255, .035);
  border: 1px solid rgba(255, 255, 255, .12);
}

.lineage-figure figcaption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 30px;
  padding: 24px 30px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.lineage-figure figcaption span {
  color: var(--white);
  font-size: 15px;
  font-weight: 680;
}

.lineage-figure figcaption small {
  max-width: 540px;
  color: rgba(255, 255, 255, .44);
  font-size: 11px;
  text-align: right;
}

.lineage-figure svg {
  width: 100%;
  padding: 10px;
}

.svg-base {
  fill: none;
  stroke: #607083;
  stroke-width: 3;
}

.svg-canonical,
.svg-fork {
  fill: none;
  stroke-width: 3;
}

.svg-canonical { stroke: url(#goldLine); }
.svg-fork { stroke: url(#cyanLine); opacity: .75; }
.svg-node { fill: var(--ink-2); stroke: #8a9aac; stroke-width: 2; }
.svg-node-anchor { fill: var(--ink-2); stroke: #d9e1e7; stroke-width: 3; }
.svg-node-gold { fill: var(--gold); stroke: #ffe4a6; stroke-width: 2; }
.svg-node-cyan { fill: var(--cyan); stroke: #c9f7ff; stroke-width: 2; opacity: .78; }
.svg-x { stroke: #8a98a8; stroke-width: 3; opacity: .65; }
.svg-label { fill: #7e8b9b; font: 700 12px Inter, sans-serif; letter-spacing: 2px; }
.svg-label-gold { fill: var(--gold); }
.svg-text { fill: #a6b1bf; font: 500 13px Inter, sans-serif; }
.svg-text-gold { fill: var(--gold); }
.svg-text-cyan { fill: var(--cyan); }
.svg-text-muted { fill: #778697; }

.method-boundary {
  display: flex;
  gap: 28px;
  align-items: baseline;
  margin-top: 28px;
  padding-left: 26px;
  border-left: 2px solid var(--gold);
}

.method-boundary strong {
  flex: 0 0 auto;
  color: var(--white);
}

.method-boundary p {
  margin: 0;
  color: rgba(255, 255, 255, .52);
  font-size: 14px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
}

.metric-card {
  min-height: 300px;
  padding: clamp(30px, 4.2vw, 56px);
  background: #fff;
}

.metric-card.metric-primary {
  color: var(--white);
  background:
    radial-gradient(circle at 80% 20%, rgba(102, 217, 238, .17), transparent 36%),
    var(--ink-2);
}

.metric-value {
  display: block;
  margin-bottom: 44px;
  color: var(--cyan-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(52px, 6vw, 82px);
  line-height: 1;
  letter-spacing: -.055em;
}

.metric-primary .metric-value {
  color: var(--gold);
}

.metric-value small {
  margin-left: 7px;
  font-family: Inter, sans-serif;
  font-size: 16px;
  letter-spacing: -.02em;
  opacity: .55;
}

.metric-card h3 {
  margin-bottom: 12px;
  font-size: 21px;
}

.metric-card p {
  max-width: 430px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.metric-primary p {
  color: rgba(255, 255, 255, .52);
}

.evidence-caveat {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  margin-top: 24px;
  padding: 24px 28px;
  color: var(--white);
  background: #6f322f;
}

.caveat-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 20px;
}

.evidence-caveat strong {
  display: block;
  font-size: 14px;
}

.evidence-caveat p {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, .68);
  font-size: 13px;
}

.evidence-caveat a {
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.evidence-levels {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: clamp(40px, 6vw, 84px);
  margin-top: 100px;
  padding-top: 70px;
  border-top: 1px solid var(--line);
}

.levels-intro h3 {
  margin: 18px 0;
  font-size: clamp(30px, 3.4vw, 46px);
}

.levels-intro > p:last-child {
  color: var(--muted);
  font-size: 15px;
}

.levels-table {
  border-top: 1px solid #b8c4cc;
}

.level-row {
  display: grid;
  grid-template-columns: 105px minmax(0, 1fr) minmax(155px, .7fr);
  gap: 24px;
  align-items: center;
  min-height: 122px;
  padding: 20px 0;
  color: #8795a3;
  border-bottom: 1px solid var(--line);
}

.level-row > div:first-child {
  display: flex;
  gap: 10px;
  align-items: center;
}

.level-row > div:first-child span {
  color: var(--text);
  font-family: Georgia, serif;
  font-size: 30px;
}

.level-row small {
  padding: 4px 7px;
  color: currentColor;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 8px;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.level-row strong {
  display: block;
  color: var(--text);
  font-size: 15px;
}

.level-row p {
  margin: 4px 0 0;
  color: inherit;
  font-size: 11px;
  line-height: 1.45;
}

.level-row > div:last-child {
  font-size: 11px;
  line-height: 1.45;
}

.level-current {
  color: var(--cyan-deep);
}

.level-current > div:first-child span,
.level-current strong {
  color: var(--cyan-deep);
}

.claims-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 100px;
}

.claim-card {
  min-height: 390px;
  padding: clamp(32px, 4vw, 54px);
  border: 1px solid var(--line);
}

.claim-card .mini-label {
  margin-bottom: 46px;
}

.claim-card h3 {
  margin-bottom: 28px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(30px, 3vw, 42px);
  font-weight: 400;
}

.claim-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.claim-card li {
  position: relative;
  padding: 12px 0 12px 24px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.claim-card li::before {
  content: "×";
  position: absolute;
  top: 11px;
  left: 0;
  color: var(--danger);
  font-family: Georgia, serif;
  font-size: 18px;
}

.claim-risk li::before {
  content: "△";
  color: var(--gold-deep);
  font-size: 12px;
}

.research-section {
  border-top: 1px solid var(--line);
}

.research-current {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  color: var(--white);
  background: var(--ink);
  box-shadow: var(--shadow);
}

.current-main {
  padding: clamp(34px, 5vw, 68px);
  background:
    radial-gradient(circle at 90% 20%, rgba(102, 217, 238, .12), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, .025), transparent);
}

.current-badge {
  display: inline-flex;
  padding: 6px 9px;
  color: var(--gold);
  border: 1px solid rgba(241, 195, 107, .4);
  border-radius: 2px;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: .15em;
}

.current-type {
  margin: 44px 0 13px;
  color: rgba(255, 255, 255, .45);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.current-main h3 {
  max-width: 620px;
  margin-bottom: 24px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(32px, 4vw, 54px);
  font-weight: 400;
  line-height: 1.08;
}

.current-main > p:last-of-type {
  max-width: 590px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, .56);
  font-size: 15px;
}

.moderation-note {
  color: rgba(255, 255, 255, .46);
  font-size: 11px;
}

.current-links {
  display: grid;
  border-left: 1px solid rgba(255, 255, 255, .12);
}

.current-links a {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 128px;
  padding: 28px 68px 28px 34px;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
  transition: background .2s ease;
}

.current-links a:last-child {
  border-bottom: 0;
}

.current-links a:hover {
  background: rgba(102, 217, 238, .06);
}

.current-links span {
  font-size: 15px;
  font-weight: 680;
}

.current-links small {
  margin-top: 5px;
  color: rgba(255, 255, 255, .42);
  font-size: 11px;
}

.current-links b {
  position: absolute;
  top: 50%;
  right: 28px;
  color: var(--cyan);
  font-size: 17px;
  transform: translateY(-50%);
}

.evolution-block {
  display: grid;
  grid-template-columns: .58fr 1.42fr;
  gap: clamp(40px, 7vw, 100px);
  margin-top: 120px;
}

.evolution-heading h3 {
  margin-top: 18px;
  font-size: clamp(30px, 4vw, 50px);
}

.timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 126px;
  width: 1px;
  background: var(--line);
}

.timeline li {
  display: grid;
  grid-template-columns: 100px 28px minmax(0, 1fr);
  gap: 14px;
  min-height: 114px;
}

.timeline time {
  padding-top: 1px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.timeline-dot {
  position: relative;
  z-index: 2;
  display: block;
  width: 9px;
  height: 9px;
  margin: 7px auto 0;
  background: var(--paper);
  border: 2px solid #99a7b3;
  border-radius: 50%;
}

.timeline-dot-current {
  background: var(--gold);
  border-color: var(--gold-deep);
  box-shadow: 0 0 0 5px rgba(241, 195, 107, .2);
}

.timeline strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
}

.timeline p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.archive-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-top: 130px;
  padding-top: 78px;
  border-top: 1px solid var(--line);
}

.archive-heading h3 {
  margin: 18px 0 0;
  font-size: clamp(32px, 4vw, 52px);
}

.archive-heading > p {
  max-width: 480px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.archive-alert {
  margin-top: 36px;
  padding: 18px 22px;
  color: #6f5324;
  background: #fff6df;
  border-left: 3px solid var(--gold-deep);
  font-size: 13px;
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.archive-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.archive-card:hover {
  transform: translateY(-4px);
  border-color: #9dafbc;
  box-shadow: 0 18px 45px rgba(7, 17, 31, .08);
}

.archive-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 52px;
}

.archive-meta span {
  color: var(--cyan-deep);
  font-family: Georgia, serif;
  font-size: 22px;
}

.archive-meta small {
  padding: 4px 8px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 8px;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.archive-card h4 {
  margin-bottom: 12px;
  font-size: 20px;
  line-height: 1.25;
}

.archive-card p {
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 12px;
}

.archive-card a,
.archive-disabled {
  margin-top: auto;
  color: var(--cyan-deep);
  font-size: 11px;
  font-weight: 720;
}

.archive-disabled {
  color: #9b6b24;
}

.archive-recovery {
  background: #fffbf1;
  border-color: #e8d4a6;
}

.archive-paused {
  background: #f6f8fa;
}

.origin-section {
  padding-bottom: clamp(130px, 14vw, 210px);
}

.origin-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(55px, 8vw, 110px);
  align-items: end;
}

.origin-copy .section-number {
  margin-bottom: 32px;
  color: var(--cyan);
}

.origin-copy h2 {
  max-width: 680px;
  color: var(--white);
}

.origin-copy p:not(.section-number) {
  max-width: 650px;
  color: rgba(255, 255, 255, .54);
  font-size: 16px;
}

.origin-copy strong {
  color: var(--gold);
}

.patent-card {
  padding: clamp(30px, 4vw, 52px);
  background: rgba(255, 255, 255, .045);
  border: 1px solid rgba(255, 255, 255, .14);
}

.patent-card .mini-label {
  margin-bottom: 52px;
  color: var(--cyan);
}

.patent-id {
  display: block;
  margin-bottom: 42px;
  color: var(--gold);
  font-family: Georgia, serif;
  font-size: clamp(27px, 3.2vw, 42px);
  letter-spacing: -.02em;
}

.patent-card dl {
  margin-bottom: 0;
}

.patent-card dl div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 20px;
  padding: 15px 0;
  border-top: 1px solid rgba(255, 255, 255, .12);
}

.patent-card dt {
  color: rgba(255, 255, 255, .4);
  font-size: 11px;
}

.patent-card dd {
  margin: 0;
  color: rgba(255, 255, 255, .72);
  font-size: 12px;
}

.origin-watermark {
  position: absolute;
  right: -25px;
  bottom: -46px;
  color: rgba(255, 255, 255, .025);
  font-size: clamp(90px, 17vw, 260px);
  font-weight: 800;
  letter-spacing: -.08em;
  line-height: .8;
  white-space: nowrap;
}

.section-korean {
  background:
    linear-gradient(115deg, rgba(102, 217, 238, .12), transparent 42%),
    #eaf2f5;
}

.korean-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(50px, 8vw, 110px);
}

.korean-title .section-number {
  margin-bottom: 30px;
}

.korean-title h2 {
  font-size: clamp(38px, 4.5vw, 62px);
  word-break: keep-all;
}

.korean-copy p {
  margin-bottom: 22px;
  color: #425466;
  font-size: 18px;
  line-height: 1.82;
  word-break: keep-all;
}

.korean-copy strong {
  color: var(--cyan-deep);
}

.korean-copy a {
  display: inline-block;
  margin-top: 20px;
  color: var(--cyan-deep);
  font-size: 14px;
  font-weight: 750;
}

.collaboration-section {
  overflow: hidden;
  color: var(--white);
  background: #050b13;
}

.collaboration-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 760px;
  height: 760px;
  background: radial-gradient(circle, rgba(24, 116, 144, .24), transparent 64%);
  transform: translate(-50%, -50%);
}

.collaboration-shell {
  text-align: center;
}

.collaboration-shell .section-number {
  margin-bottom: 35px;
  color: var(--cyan);
}

.collaboration-shell h2 {
  max-width: 940px;
  margin-right: auto;
  margin-left: auto;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.collaboration-shell > p:not(.section-number) {
  max-width: 720px;
  margin: 0 auto;
  color: rgba(255, 255, 255, .52);
  font-size: 17px;
}

.collaboration-paths {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  justify-content: center;
  margin: 48px 0;
}

.collaboration-paths span {
  padding: 8px 13px;
  color: rgba(255, 255, 255, .64);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.collaboration-actions {
  justify-content: center;
}

.site-footer {
  padding: 58px clamp(24px, 5vw, 74px) 28px;
  color: rgba(255, 255, 255, .56);
  background: #02060b;
  border-top: 1px solid rgba(255, 255, 255, .1);
}

.footer-top,
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 40px;
}

.footer-top {
  align-items: flex-start;
  padding-bottom: 48px;
}

.footer-brand {
  display: grid;
  gap: 9px;
  max-width: 460px;
}

.footer-brand strong {
  color: var(--white);
  font-size: 18px;
  letter-spacing: .16em;
}

.footer-brand span {
  font-size: 11px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: flex-end;
}

.footer-links a {
  color: rgba(255, 255, 255, .7);
  font-size: 11px;
}

.footer-bottom {
  padding-top: 23px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}

.footer-bottom p {
  margin: 0;
  font-size: 9px;
  letter-spacing: .03em;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2, .75, .25, 1);
}

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

/* WordPress document templates */
.admin-bar .site-header {
  top: 32px;
}

.archive-page {
  min-height: 70vh;
  background: #eef2f4;
}

.archive-page-hero {
  position: relative;
  overflow: hidden;
  padding: 185px 0 105px;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 20%, rgba(102, 217, 238, .17), transparent 33%),
    linear-gradient(135deg, #0e2237, var(--ink) 62%);
}

.archive-page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .08;
  background-image:
    linear-gradient(rgba(255, 255, 255, .15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .15) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, transparent, #000);
}

.archive-page-shell {
  position: relative;
  z-index: 1;
  width: min(1040px, calc(100% - 48px));
  margin: 0 auto;
}

.archive-page-hero .section-number {
  margin-bottom: 30px;
  color: var(--cyan);
}

.archive-page-hero h1 {
  max-width: 920px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(43px, 6vw, 76px);
  font-weight: 400;
  line-height: 1.04;
}

.archive-page-layout {
  padding-top: 64px;
  padding-bottom: 120px;
}

.historical-notice {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 34px;
  align-items: center;
  margin-bottom: 28px;
  padding: 26px 30px;
  color: #584116;
  background: #fff5dc;
  border: 1px solid #e5cb91;
  border-left: 4px solid var(--gold-deep);
}

.historical-notice strong {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
}

.historical-notice p {
  max-width: 700px;
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
}

.historical-notice-links {
  display: grid;
  gap: 8px;
  justify-items: end;
}

.historical-notice a {
  color: #6e4c0f;
  font-size: 11px;
  font-weight: 750;
  white-space: nowrap;
}

.paused-notice {
  color: #294856;
  background: #e9f5f8;
  border-color: #b9dce4;
  border-left-color: var(--cyan-deep);
}

.paused-notice a {
  color: var(--cyan-deep);
}

.research-document {
  padding: clamp(30px, 6vw, 78px);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 26px 75px rgba(7, 17, 31, .08);
}

.research-document > * {
  max-width: 780px;
  margin-right: auto;
  margin-left: auto;
}

.research-document h1,
.research-document h2,
.research-document h3,
.research-document h4 {
  color: var(--ink);
}

.research-document h1 {
  margin-top: 1.2em;
  font-size: clamp(36px, 4vw, 54px);
}

.research-document h2 {
  margin-top: 2.2em;
  margin-bottom: .8em;
  padding-top: .3em;
  font-size: clamp(29px, 3.2vw, 42px);
}

.research-document h3 {
  margin-top: 1.8em;
  font-size: clamp(23px, 2.5vw, 30px);
}

.research-document p,
.research-document li {
  color: #405164;
  font-size: 16px;
  line-height: 1.8;
}

.research-document a {
  color: var(--cyan-deep);
  font-weight: 620;
}

.research-document blockquote {
  margin: 2.2em auto;
  padding: 8px 0 8px 28px;
  color: var(--ink);
  border-left: 3px solid var(--gold-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
}

.research-document blockquote p {
  color: inherit;
  font: inherit;
}

.research-document pre,
.research-document code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.research-document pre {
  overflow-x: auto;
  max-width: 100%;
  padding: 20px;
  color: #dce8ef;
  background: var(--ink-2);
  border-radius: 4px;
  font-size: 13px;
}

.research-document table {
  width: 100%;
  max-width: 100%;
  margin: 2em auto;
  border-collapse: collapse;
  font-size: 13px;
}

.research-document th,
.research-document td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border: 1px solid var(--line);
}

.research-document th {
  color: var(--ink);
  background: #edf3f5;
}

.research-document figure,
.research-document .wp-block-image {
  max-width: 100%;
  margin-top: 2.4em;
  margin-bottom: 2.4em;
}

.research-document img {
  height: auto;
  margin-right: auto;
  margin-left: auto;
}

.research-document hr {
  margin: 3em auto;
  border: 0;
  border-top: 1px solid var(--line);
}

.archive-return {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  margin-top: 28px;
  padding: 22px 26px;
  color: rgba(255, 255, 255, .64);
  background: var(--ink);
  font-size: 11px;
}

.archive-return a {
  color: var(--gold);
  font-weight: 720;
}

.research-index {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.research-index article {
  padding: 36px;
  background: #fff;
}

.research-index article h2 {
  margin: 8px 0 14px;
  font-size: 30px;
}

.research-index article h2 a {
  text-decoration: none;
}

@media (max-width: 1040px) {
  .primary-nav {
    gap: 18px;
  }

  .primary-nav a {
    font-size: 12px;
  }

  .problem-grid,
  .evidence-levels,
  .research-current,
  .origin-grid,
  .korean-grid {
    grid-template-columns: 1fr;
  }

  .problem-copy {
    max-width: 740px;
  }

  .comparison-card {
    min-height: 470px;
  }

  .method-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .method-steps li:nth-child(3) {
    border-left: 0;
  }

  .method-steps li:nth-child(n + 3) {
    border-top: 0;
  }

  .current-links {
    grid-template-columns: repeat(2, 1fr);
    border-top: 1px solid rgba(255, 255, 255, .12);
    border-left: 0;
  }

  .current-links a:nth-child(odd) {
    border-right: 1px solid rgba(255, 255, 255, .12);
  }

  .archive-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  :root {
    --header-height: 70px;
  }

  .site-header,
  .site-header.is-scrolled {
    height: 70px;
    padding: 0 20px;
  }

  .admin-bar .site-header {
    top: 46px;
  }

  .brand-copy small {
    display: none;
  }

  .menu-button {
    position: relative;
    z-index: 2;
    display: block;
  }

  .menu-button[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] span:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
  }

  .primary-nav {
    position: fixed;
    z-index: 1;
    inset: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    align-items: flex-start;
    justify-content: center;
    padding: 90px 28px 40px;
    color: var(--white);
    background: rgba(4, 12, 23, .98);
  }

  .primary-nav.is-open {
    display: flex;
  }

  .primary-nav a {
    width: 100%;
    padding: 16px 0;
    font-size: clamp(22px, 7vw, 34px);
    font-weight: 550;
    letter-spacing: -.03em;
    border-bottom: 1px solid rgba(255, 255, 255, .12);
  }

  .primary-nav a::after {
    display: none;
  }

  .primary-nav .nav-korean,
  .site-header.is-scrolled .nav-korean {
    width: auto;
    margin-top: 20px;
    padding: 9px 15px;
    border-color: rgba(255, 255, 255, .3);
    font-size: 14px;
    letter-spacing: .02em;
  }

  .site-header:has(.primary-nav.is-open) {
    color: var(--white);
    background: transparent;
    box-shadow: none;
    border-color: transparent;
  }

  .hero {
    min-height: 880px;
  }

  .hero-image {
    object-position: 66% center;
  }

  .hero-scrim {
    background:
      linear-gradient(90deg, rgba(3, 10, 20, .93), rgba(3, 10, 20, .44)),
      linear-gradient(180deg, rgba(3, 10, 20, .28), rgba(3, 10, 20, .24) 35%, rgba(3, 10, 20, .92) 76%);
  }

  .hero-content {
    width: min(100% - 40px, 680px);
    padding-top: 135px;
    padding-bottom: 160px;
  }

  .hero h1 {
    font-size: clamp(55px, 13.8vw, 88px);
  }

  .status-strip {
    grid-template-columns: 1fr;
    max-width: 520px;
  }

  .status-strip > div,
  .status-strip > div + div {
    padding: 12px 0;
    border-left: 0;
    border-bottom: 1px solid rgba(255, 255, 255, .13);
  }

  .status-strip > div:last-child {
    border-bottom: 0;
  }

  .hero-caption {
    display: none;
  }

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

  .section-heading .section-number {
    grid-row: auto;
    margin: 0 0 25px;
  }

  .lineage-figure {
    overflow-x: auto;
  }

  .lineage-figure svg {
    min-width: 820px;
  }

  .evolution-block {
    grid-template-columns: 1fr;
  }

  .archive-heading {
    display: block;
  }

  .archive-heading > p {
    margin-top: 24px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .section {
    padding: 82px 0;
  }

  .section-shell {
    width: min(100% - 36px, var(--max-width));
  }

  .archive-page-shell {
    width: min(100% - 32px, 1040px);
  }

  .archive-page-hero {
    padding: 150px 0 74px;
  }

  .archive-page-layout {
    padding-top: 34px;
    padding-bottom: 82px;
  }

  .historical-notice {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 22px;
  }

  .historical-notice-links {
    justify-items: start;
  }

  .research-document {
    padding: 28px 22px;
  }

  .research-document p,
  .research-document li {
    font-size: 15px;
  }

  .archive-return {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    min-height: 920px;
  }

  .hero-content {
    width: min(100% - 36px, 680px);
    padding-top: 122px;
  }

  .eyebrow {
    font-size: 10px;
  }

  .hero-kicker {
    margin-top: 28px;
    font-size: 24px;
  }

  .hero h1 {
    margin-bottom: 26px;
    font-size: clamp(52px, 17vw, 72px);
  }

  .hero-lede {
    font-size: 16px;
  }

  .hero-actions,
  .collaboration-actions {
    align-items: stretch;
    flex-direction: column;
  }

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

  .scroll-cue {
    bottom: 22px;
    left: 18px;
  }

  .section-heading h2,
  .origin-copy h2,
  .korean-title h2,
  .collaboration-shell h2 {
    font-size: clamp(36px, 11vw, 52px);
  }

  .section-heading > p:last-child {
    font-size: 16px;
  }

  .problem-copy .lead,
  .problem-copy blockquote {
    font-size: 19px;
  }

  .comparison-card {
    min-height: 430px;
    padding: 24px;
  }

  .branch-visual {
    height: 230px;
  }

  .comparison-rows > div {
    display: grid;
    gap: 3px;
  }

  .comparison-rows strong {
    text-align: left;
  }

  .method-steps,
  .metrics-grid,
  .claims-grid,
  .archive-grid,
  .current-links {
    grid-template-columns: 1fr;
  }

  .method-steps li,
  .method-steps li:nth-child(3) {
    min-height: 240px;
    border-top: 1px solid rgba(255, 255, 255, .17);
    border-left: 0;
  }

  .step-icon {
    margin: 36px 0 28px;
  }

  .lineage-figure figcaption {
    display: block;
  }

  .lineage-figure figcaption small {
    display: block;
    margin-top: 7px;
    text-align: left;
  }

  .method-boundary {
    display: block;
  }

  .method-boundary p {
    margin-top: 8px;
  }

  .metric-card {
    min-height: 260px;
  }

  .evidence-caveat {
    grid-template-columns: auto 1fr;
  }

  .evidence-caveat a {
    grid-column: 2;
    white-space: normal;
  }

  .level-row {
    grid-template-columns: 72px 1fr;
    gap: 14px;
    min-height: 108px;
  }

  .level-row > div:last-child {
    grid-column: 2;
    margin-top: -12px;
  }

  .claim-card {
    min-height: 0;
  }

  .current-links a:nth-child(odd) {
    border-right: 0;
  }

  .current-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .timeline::before {
    left: 82px;
  }

  .timeline li {
    grid-template-columns: 60px 17px minmax(0, 1fr);
    gap: 10px;
    min-height: 135px;
  }

  .archive-card {
    min-height: 280px;
  }

  .patent-card dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .korean-copy p {
    font-size: 16px;
    line-height: 1.75;
  }

  .footer-top,
  .footer-bottom {
    display: grid;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

/* Continuity story: a four-scene visual explanation of entropy lineage. */
.continuity-story {
  position: relative;
  height: clamp(620px, 78vh, 860px);
  overflow: hidden;
  color: var(--white);
  background: #02070c;
  isolation: isolate;
}

.continuity-slides,
.continuity-slide,
.continuity-slide > img,
.continuity-scrim {
  position: absolute;
  inset: 0;
}

.continuity-slide {
  z-index: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1.05s ease;
}

.continuity-slide.is-active {
  z-index: 1;
  opacity: 1;
  pointer-events: auto;
}

.continuity-slide > img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center;
  transform: scale(1.015);
  transition: transform 7s ease-out;
}

.continuity-slide.is-active > img {
  transform: scale(1.055);
}

.continuity-scrim {
  background:
    linear-gradient(90deg, rgba(1, 6, 10, .08) 0%, rgba(1, 6, 10, .18) 45%, rgba(1, 6, 10, .88) 100%),
    linear-gradient(0deg, rgba(1, 6, 10, .5), transparent 55%);
}

.continuity-copy {
  position: absolute;
  z-index: 2;
  top: 50%;
  right: clamp(26px, 7vw, 116px);
  width: min(690px, 45vw);
  transform: translateY(-46%);
  text-shadow: 0 3px 28px rgba(0, 0, 0, .58);
}

.continuity-kicker {
  display: block;
  margin-bottom: 20px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.continuity-copy h3 {
  max-width: 760px;
  margin-bottom: 24px;
  color: var(--white);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(50px, 5.3vw, 92px);
  font-weight: 400;
  line-height: .99;
  letter-spacing: -.05em;
}

.continuity-copy p {
  max-width: 610px;
  margin: 0;
  color: rgba(244, 250, 252, .86);
  font-size: clamp(17px, 1.25vw, 21px);
  line-height: 1.75;
  word-break: keep-all;
}

.continuity-brand {
  position: absolute;
  z-index: 4;
  top: clamp(28px, 5vw, 64px);
  left: clamp(26px, 5vw, 76px);
  display: flex;
  gap: 13px;
  align-items: baseline;
  color: var(--white);
  letter-spacing: .05em;
}

.continuity-brand b {
  font-size: 16px;
}

.continuity-brand span {
  color: rgba(255, 255, 255, .54);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.continuity-controls {
  position: absolute;
  z-index: 5;
  right: clamp(26px, 5vw, 76px);
  bottom: clamp(26px, 4vw, 52px);
  display: flex;
  gap: 18px;
  align-items: center;
}

.continuity-dots {
  display: flex;
  gap: 8px;
  width: min(330px, 33vw);
}

.continuity-dots button {
  position: relative;
  flex: 1;
  height: 30px;
  padding: 14px 0;
  overflow: hidden;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.continuity-dots button::before,
.continuity-dots button span {
  position: absolute;
  top: 14px;
  left: 0;
  width: 100%;
  height: 2px;
}

.continuity-dots button::before {
  content: "";
  background: rgba(255, 255, 255, .26);
}

.continuity-dots button span {
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
}

.continuity-dots button.is-active span {
  animation: continuity-progress 6s linear forwards;
}

.continuity-story.is-paused .continuity-dots button.is-active span {
  animation-play-state: paused;
}

.continuity-pause {
  position: relative;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, .3);
  border-radius: 50%;
  color: var(--white);
  background: rgba(2, 7, 12, .38);
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
}

.continuity-pause:hover,
.continuity-pause:focus-visible {
  border-color: var(--cyan);
  background: rgba(2, 7, 12, .72);
}

.continuity-pause > span:first-child::before,
.continuity-pause > span:first-child::after {
  content: "";
  position: absolute;
  top: 12px;
  width: 3px;
  height: 13px;
  border-radius: 2px;
  background: currentColor;
}

.continuity-pause > span:first-child::before {
  left: 14px;
}

.continuity-pause > span:first-child::after {
  right: 14px;
}

.continuity-story.is-paused .continuity-pause > span:first-child::before {
  top: 11px;
  left: 14px;
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 12px solid currentColor;
  border-radius: 0;
  background: transparent;
}

.continuity-story.is-paused .continuity-pause > span:first-child::after {
  display: none;
}

@keyframes continuity-progress {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@media (max-width: 760px) {
  .continuity-story {
    height: min(80vh, 700px);
    min-height: 610px;
  }

  .continuity-slide > img {
    object-position: 31% center;
  }

  .continuity-scrim {
    background: linear-gradient(0deg, rgba(1, 6, 10, .96) 0%, rgba(1, 6, 10, .57) 45%, rgba(1, 6, 10, .08) 75%);
  }

  .continuity-copy {
    top: auto;
    right: 24px;
    bottom: 95px;
    left: 24px;
    width: auto;
    transform: none;
  }

  .continuity-copy h3 {
    margin-bottom: 18px;
    font-size: clamp(40px, 11.5vw, 58px);
  }

  .continuity-copy p {
    font-size: 16px;
    line-height: 1.65;
  }

  .continuity-brand {
    top: 26px;
    left: 24px;
  }

  .continuity-brand span {
    display: none;
  }

  .continuity-controls {
    right: 24px;
    bottom: 25px;
    left: 24px;
  }

  .continuity-dots {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .continuity-slide > img {
    transform: none;
  }

  .continuity-dots button.is-active span {
    animation: none;
    transform: scaleX(1);
  }
}