@font-face {
  font-family: "CIT Montserrat";
  src: url("/assets/fonts/montserrat-regular-webfont.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "CIT Montserrat";
  src: url("/assets/fonts/montserrat-bold-webfont.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --sbl-paper: #f4f0e9;
  --sbl-paper-2: #fffdf8;
  --sbl-ink: #1d252a;
  --sbl-muted: #5b666a;
  --sbl-line: #cbc7be;
  --sbl-soft-line: #e2ded5;
  --sbl-accent: #d45f4f;
  --sbl-accent-dark: #a83c31;
  --sbl-accent-soft: #f4d8d2;
  --sbl-action: #a83c31;
  --sbl-action-hover: #873129;
  --sbl-dark-surface: #1d252a;
  --sbl-on-dark: #f4f0e9;
  --sbl-on-dark-muted: #c8cfcc;
  --sbl-accent-on-dark: #f49382;
  --sbl-moss: #61756e;
  --sbl-shadow: 0 24px 70px rgb(28 38 42 / 12%);
  --sbl-shell: min(1180px, calc(100vw - 48px));
  --sbl-radius: 14px;
  --sbl-nav-height: 72px;
  --sbl-font: "CIT Montserrat", "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --sbl-paper: #151a1d;
    --sbl-paper-2: #1d2428;
    --sbl-ink: #f4f0e9;
    --sbl-muted: #b0b9ba;
    --sbl-line: #485156;
    --sbl-soft-line: #30383c;
    --sbl-accent: #ee7b69;
    --sbl-accent-dark: #f49382;
    --sbl-accent-soft: #492b29;
    --sbl-moss: #9cb4aa;
    --sbl-shadow: 0 24px 70px rgb(0 0 0 / 32%);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--sbl-nav-height) + 24px);
  background: var(--sbl-paper);
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--sbl-paper);
  color: var(--sbl-ink);
  font-family: var(--sbl-font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

a {
  color: inherit;
}

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

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

.sbl-skip {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  transform: translateY(-160%);
  border-radius: 6px;
  background: var(--sbl-ink);
  color: var(--sbl-paper);
  font-weight: 700;
}

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

.sbl-nav {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--sbl-nav-height);
  border-bottom: 1px solid color-mix(in srgb, var(--sbl-line) 80%, transparent);
  background: color-mix(in srgb, var(--sbl-paper) 88%, transparent);
  backdrop-filter: blur(16px);
}

.sbl-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 28px;
}

.sbl-brand {
  flex: 0 0 auto;
  text-decoration: none;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -.04em;
}

.sbl-brand span {
  margin-left: 8px;
  color: var(--sbl-muted);
  font-size: .67rem;
  letter-spacing: .13em;
}

.sbl-nav nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  min-width: 0;
}

.sbl-nav nav a,
.sbl-language {
  position: relative;
  color: var(--sbl-muted);
  text-decoration: none;
  font-size: .76rem;
  font-weight: 700;
}

.sbl-nav nav a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--sbl-accent);
  content: "";
  transition: transform 180ms ease;
}

.sbl-nav nav a:hover::after,
.sbl-nav nav a:focus-visible::after {
  transform: scaleX(1);
}

.sbl-nav-actions,
.sbl-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sbl-nav-cta,
.sbl-button,
.sbl-small-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.sbl-nav-cta {
  padding: 10px 15px;
  border-radius: 999px;
  background: var(--sbl-ink);
  color: var(--sbl-paper);
  font-size: .76rem;
}

.sbl-nav-cta:hover,
.sbl-button:hover,
.sbl-small-button:hover {
  transform: translateY(-2px);
}

.sbl-hero {
  position: relative;
  isolation: isolate;
  min-height: calc(100dvh - var(--sbl-nav-height));
  overflow: hidden;
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-hero::before {
  position: absolute;
  z-index: -1;
  width: min(52vw, 680px);
  aspect-ratio: 1;
  top: 4%;
  left: -16%;
  border: 1px solid color-mix(in srgb, var(--sbl-accent) 35%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 72px color-mix(in srgb, var(--sbl-accent) 4%, transparent), 0 0 0 144px color-mix(in srgb, var(--sbl-accent) 3%, transparent);
  content: "";
}

.sbl-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .98fr) minmax(430px, 1.02fr);
  align-items: center;
  min-height: calc(100dvh - var(--sbl-nav-height));
  gap: clamp(38px, 4.5vw, 68px);
  padding-block: clamp(58px, 8vh, 96px);
}

.sbl-hero-copy {
  position: relative;
  z-index: 2;
}

.sbl-eyebrow,
.sbl-kicker {
  margin: 0 0 16px;
  color: var(--sbl-accent-dark);
  font-size: .71rem;
  font-weight: 700;
  letter-spacing: .13em;
  line-height: 1.4;
  text-transform: uppercase;
}

.sbl-hero h1 {
  max-width: 710px;
  margin: 0;
  font-size: clamp(3rem, 3.8vw, 3.65rem);
  font-weight: 700;
  letter-spacing: -.075em;
  line-height: .98;
  word-break: keep-all;
  text-wrap: balance;
}

html[lang="en"] .sbl-hero h1 {
  font-size: clamp(2.8rem, 3.5vw, 3.5rem);
}

.sbl-hero-lead {
  max-width: 620px;
  margin: 28px 0 0;
  color: var(--sbl-muted);
  font-size: clamp(1rem, 1.55vw, 1.25rem);
  line-height: 1.75;
}

.sbl-university-rail {
  margin: 30px 0 0;
}

.sbl-university-rail > p {
  margin: 0 0 9px;
  color: var(--sbl-muted);
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .1em;
  line-height: 1.35;
  text-transform: uppercase;
}

.sbl-university-rail ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sbl-university-mark {
  display: grid;
  align-content: center;
  min-height: 72px;
  padding: 12px 14px;
  border-radius: 10px;
  color: #fff;
}

.sbl-university-mark strong {
  font-size: clamp(.93rem, 1.25vw, 1.18rem);
  letter-spacing: -.035em;
  line-height: 1.08;
}

.sbl-university-mark span {
  margin-top: 6px;
  color: rgb(255 255 255 / 82%);
  font-size: .65rem;
  font-weight: 700;
  line-height: 1.25;
}

[data-institution] {
  --institution-color: #37414f;
}

[data-institution="stanford"] {
  --institution-color: #8c1515;
}

[data-institution="stanford-medicine"] {
  --institution-color: #006b8f;
}

[data-institution="harvard"] {
  --institution-color: #4b3f8f;
}

[data-institution="github"] {
  --institution-color: #263238;
}

[data-institution="snu"] {
  --institution-color: #003876;
}

[data-institution="ucla"] {
  --institution-color: #1d5fa8;
}

[data-institution="washu"] {
  --institution-color: #a51417;
}

[data-institution="colorado"] {
  --institution-color: #6b5b26;
}

[data-institution="boston-childrens"] {
  --institution-color: #00558c;
}

[data-institution="deepmind"] {
  --institution-color: #1558c0;
}

[data-institution="cos"] {
  --institution-color: #23445d;
}

[data-institution="open"] {
  --institution-color: #4a5568;
}

.sbl-university-mark {
  background: var(--institution-color);
}

.sbl-university-rail-banner {
  margin-block: 22px;
}

.sbl-university-rail-sessions,
.sbl-university-rail-sources {
  margin: 0 0 42px;
}

.sbl-actions {
  flex-wrap: wrap;
  margin-top: 32px;
}

.sbl-button {
  min-height: 50px;
  padding: 14px 22px;
  border-radius: 999px;
  font-size: .88rem;
}

.sbl-button-primary {
  background: var(--sbl-action);
  color: #fff;
}

.sbl-button-primary:hover {
  background: var(--sbl-action-hover);
}

.sbl-button-secondary {
  border-color: var(--sbl-line);
  background: color-mix(in srgb, var(--sbl-paper-2) 80%, transparent);
}

.sbl-hero-media {
  position: relative;
  margin: 0;
}

.sbl-hero-media::before {
  position: absolute;
  z-index: -1;
  inset: -18px 28px 28px -18px;
  border: 1px solid var(--sbl-accent);
  border-radius: var(--sbl-radius);
  content: "";
}

.sbl-hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--sbl-radius);
  box-shadow: var(--sbl-shadow);
}

.sbl-hero-media figcaption {
  position: absolute;
  right: 14px;
  bottom: 14px;
  max-width: 62%;
  padding: 9px 11px;
  border-radius: 8px;
  background: rgb(22 29 32 / 80%);
  color: #fff;
  font-size: .64rem;
  line-height: 1.45;
  backdrop-filter: blur(10px);
}

.sbl-research-banner {
  background: var(--sbl-dark-surface);
  color: var(--sbl-on-dark);
}

.sbl-research-banner .sbl-shell {
  display: grid;
  grid-template-columns: 155px minmax(0, 1.15fr) minmax(260px, .85fr);
  align-items: center;
  gap: clamp(24px, 4vw, 60px);
  padding-block: 30px;
}

.sbl-research-banner > div > span {
  color: var(--sbl-accent-on-dark);
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .1em;
  line-height: 1.5;
  text-transform: uppercase;
}

.sbl-research-banner h2,
.sbl-research-banner p,
.sbl-research-banner small {
  margin: 0;
}

.sbl-research-banner h2 {
  font-size: clamp(1rem, 2vw, 1.35rem);
  letter-spacing: -.025em;
  line-height: 1.35;
}

.sbl-research-banner p,
.sbl-research-banner small {
  color: var(--sbl-on-dark-muted);
  font-size: .72rem;
}

.sbl-research-banner p {
  margin-top: 7px;
}

.sbl-facts {
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-facts ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.sbl-facts li {
  display: grid;
  gap: 2px;
  padding: 26px 28px;
  border-left: 1px solid var(--sbl-line);
}

.sbl-facts li:last-child {
  border-right: 1px solid var(--sbl-line);
}

.sbl-facts strong {
  color: var(--sbl-accent-dark);
  font-size: 1.2rem;
  letter-spacing: -.04em;
}

.sbl-facts span {
  color: var(--sbl-muted);
  font-size: .75rem;
}

.sbl-section {
  padding-block: clamp(82px, 10vw, 144px);
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .65fr);
  align-items: end;
  gap: 36px;
  margin-bottom: clamp(38px, 5vw, 66px);
}

.sbl-section-head .sbl-kicker {
  grid-column: 1 / -1;
  margin-bottom: -18px;
}

.sbl-section-head h2,
.sbl-method h2,
.sbl-safety h2,
.sbl-final h2,
.sbl-faq h2 {
  margin: 0;
  font-size: clamp(2.1rem, 4.8vw, 4.7rem);
  letter-spacing: -.065em;
  line-height: 1.04;
  text-wrap: balance;
}

.sbl-section-head > p:last-child,
.sbl-method-grid > div > p,
.sbl-safety-copy > p,
.sbl-routes-copy > p,
.sbl-final p {
  margin: 0;
  color: var(--sbl-muted);
  font-size: .98rem;
}

.sbl-demo {
  overflow: hidden;
  border: 1px solid var(--sbl-line);
  border-radius: var(--sbl-radius);
  background: var(--sbl-paper-2);
  box-shadow: var(--sbl-shadow);
}

.sbl-demo-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0 18px;
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-demo-tabs button {
  position: relative;
  padding: 21px 12px;
  border: 0;
  background: transparent;
  color: var(--sbl-muted);
  font-size: .82rem;
  font-weight: 700;
  cursor: pointer;
}

.sbl-demo-tabs button::after {
  position: absolute;
  right: 10px;
  bottom: -1px;
  left: 10px;
  height: 3px;
  transform: scaleX(0);
  background: var(--sbl-accent);
  content: "";
  transition: transform 180ms ease;
}

.sbl-demo-tabs button[aria-selected="true"] {
  color: var(--sbl-ink);
}

.sbl-demo-tabs button[aria-selected="true"]::after {
  transform: scaleX(1);
}

.sbl-demo-panel {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr);
  align-items: center;
  min-height: 390px;
  gap: clamp(34px, 5vw, 80px);
  padding: clamp(30px, 5vw, 64px);
}

.sbl-demo-panel[hidden] {
  display: none;
}

.sbl-profile {
  padding-left: 24px;
  border-left: 3px solid var(--sbl-accent);
}

.sbl-profile > span,
.sbl-message-choices > span {
  display: block;
  color: var(--sbl-accent-dark);
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.sbl-profile h3 {
  margin: 12px 0;
  font-size: clamp(1.65rem, 3vw, 2.8rem);
  letter-spacing: -.05em;
}

.sbl-profile mark {
  display: inline-block;
  margin-left: 7px;
  padding: 3px 8px;
  border-radius: 5px;
  background: var(--sbl-accent-soft);
  color: var(--sbl-accent-dark);
  font-size: .64em;
  vertical-align: middle;
}

.sbl-profile mark[hidden] {
  display: none;
}

.sbl-profile p {
  color: var(--sbl-muted);
}

.sbl-small-button {
  margin-top: 12px;
  padding: 10px 14px;
  border-color: var(--sbl-line);
  border-radius: 7px;
  background: transparent;
  color: var(--sbl-ink);
  font-size: .74rem;
}

.sbl-mini-chart,
.sbl-emotion-output {
  display: grid;
  gap: 18px;
}

.sbl-mini-chart p,
.sbl-emotion-output p {
  display: grid;
  grid-template-columns: 90px minmax(100px, 1fr) 45px;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-size: .76rem;
}

.sbl-mini-chart i,
.sbl-emotion-output i {
  height: 10px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--sbl-soft-line);
}

.sbl-mini-chart b,
.sbl-emotion-output b {
  display: block;
  width: var(--value);
  height: 100%;
  border-radius: inherit;
  background: var(--sbl-accent);
  transition: width 280ms cubic-bezier(.2, .8, .2, 1);
}

.sbl-mini-chart strong,
.sbl-emotion-output strong {
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.sbl-mini-chart small,
.sbl-emotion-output small {
  color: var(--sbl-muted);
  font-size: .67rem;
}

.sbl-control-stack {
  display: grid;
  gap: 24px;
}

.sbl-control-stack label {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px 18px;
  color: var(--sbl-muted);
  font-size: .76rem;
  font-weight: 700;
}

.sbl-control-stack output {
  color: var(--sbl-ink);
  font-variant-numeric: tabular-nums;
}

.sbl-control-stack input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--sbl-accent);
}

.sbl-metric-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.sbl-metric-board p {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 20px;
  border: 1px solid var(--sbl-soft-line);
  border-radius: 10px;
}

.sbl-metric-board span {
  color: var(--sbl-muted);
  font-size: .68rem;
}

.sbl-metric-board strong {
  color: var(--sbl-accent-dark);
  font-size: 1.65rem;
  font-variant-numeric: tabular-nums;
}

.sbl-metric-board small,
.sbl-pulse-trace {
  grid-column: 1 / -1;
}

.sbl-metric-board small {
  color: var(--sbl-muted);
  font-size: .67rem;
}

.sbl-pulse-trace {
  position: relative;
  height: 92px;
  overflow: hidden;
  border-bottom: 1px solid var(--sbl-line);
  background-image: linear-gradient(var(--sbl-soft-line) 1px, transparent 1px), linear-gradient(90deg, var(--sbl-soft-line) 1px, transparent 1px);
  background-size: 32px 23px;
}

.sbl-pulse-trace::after {
  position: absolute;
  inset: 11px 0 0;
  clip-path: polygon(0 74%, 8% 71%, 13% 43%, 19% 80%, 26% 55%, 32% 63%, 39% 22%, 46% 70%, 52% 59%, 59% 37%, 65% 78%, 74% 48%, 81% 61%, 89% 28%, 100% 68%, 100% 71%, 89% 34%, 81% 67%, 74% 54%, 65% 84%, 59% 43%, 52% 65%, 46% 76%, 39% 28%, 32% 69%, 26% 61%, 19% 86%, 13% 49%, 8% 77%, 0 80%);
  background: var(--sbl-accent);
  content: "";
  transform: scaleY(var(--pulse, .55));
  transform-origin: bottom;
  transition: transform 240ms ease;
}

.sbl-message-choices {
  display: grid;
  gap: 9px;
}

.sbl-message-choices button {
  padding: 13px 15px;
  border: 1px solid var(--sbl-line);
  border-radius: 8px;
  background: transparent;
  color: var(--sbl-ink);
  text-align: left;
  cursor: pointer;
}

.sbl-message-choices button[aria-pressed="true"] {
  border-color: var(--sbl-accent);
  background: var(--sbl-accent-soft);
}

.sbl-message-choices label {
  margin-top: 8px;
  color: var(--sbl-muted);
  font-size: .75rem;
}

.sbl-message-choices input {
  accent-color: var(--sbl-accent);
}

.sbl-network {
  margin: 0;
}

.sbl-network canvas {
  display: block;
  width: 100%;
  min-height: 300px;
  border: 1px solid var(--sbl-soft-line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--sbl-paper) 80%, var(--sbl-paper-2));
}

.sbl-network figcaption {
  margin-top: 10px;
  color: var(--sbl-muted);
  font-size: .68rem;
}

.sbl-method {
  background: color-mix(in srgb, var(--sbl-paper-2) 65%, var(--sbl-paper));
}

.sbl-method-grid {
  display: grid;
  grid-template-columns: minmax(270px, .8fr) minmax(500px, 1.2fr);
  gap: clamp(50px, 8vw, 112px);
}

.sbl-method h2 {
  font-size: clamp(2rem, 4vw, 3.8rem);
}

.sbl-method-grid > div > p {
  margin-top: 22px;
}

.sbl-method ol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sbl-method li {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  min-height: 66px;
  border-top: 1px solid var(--sbl-line);
}

.sbl-method li:nth-last-child(-n + 2) {
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-method li span,
.sbl-capstone-paths article > span {
  color: var(--sbl-accent-dark);
  font-size: .66rem;
  font-weight: 700;
}

.sbl-method li b {
  font-size: .8rem;
}

.sbl-session-list {
  border-top: 1px solid var(--sbl-line);
}

.sbl-session {
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-session summary {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) 36px;
  align-items: center;
  gap: 20px;
  padding: 27px 10px;
  cursor: pointer;
  list-style: none;
}

.sbl-session summary::-webkit-details-marker {
  display: none;
}

.sbl-session summary:hover b {
  color: var(--sbl-accent-dark);
}

.sbl-session summary b {
  display: block;
  font-size: clamp(1.05rem, 2vw, 1.48rem);
  letter-spacing: -.035em;
  line-height: 1.35;
  transition: color 160ms ease;
}

.sbl-session summary small {
  display: block;
  margin-top: 6px;
  color: var(--sbl-muted);
  font-size: .75rem;
}

.sbl-session-no {
  color: var(--sbl-accent-dark);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .09em;
}

.sbl-session-open {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--sbl-line);
  border-radius: 50%;
  transition: transform 180ms ease;
}

.sbl-session[open] .sbl-session-open {
  transform: rotate(45deg);
}

.sbl-session-body {
  padding: 0 10px 38px 90px;
}

.sbl-session-lead {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 18px;
  padding: 20px 0;
  border-top: 1px solid var(--sbl-soft-line);
}

.sbl-session-lead span {
  color: var(--sbl-accent-dark);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.sbl-session-lead p,
.sbl-session-grid p,
.sbl-claims p {
  margin: 0;
  color: var(--sbl-muted);
  font-size: .78rem;
}

.sbl-concepts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0 22px;
}

.sbl-concepts b {
  margin-right: 8px;
  font-size: .72rem;
}

.sbl-concepts span {
  padding: 6px 9px;
  border: 1px solid var(--sbl-line);
  border-radius: 999px;
  color: var(--sbl-muted);
  font-size: .65rem;
}

.sbl-session-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--sbl-soft-line);
  border-radius: 10px;
  background: var(--sbl-soft-line);
}

.sbl-session-grid article {
  padding: 20px;
  background: var(--sbl-paper-2);
}

.sbl-session-grid h4 {
  margin: 0 0 8px;
  font-size: .73rem;
}

.sbl-claims {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 18px;
}

.sbl-claims p {
  padding-left: 14px;
  border-left: 2px solid var(--sbl-moss);
}

.sbl-claims p:last-child {
  border-color: var(--sbl-accent);
}

.sbl-claims b {
  display: block;
  margin-bottom: 5px;
  color: var(--sbl-ink);
  font-size: .67rem;
}

.sbl-capstone {
  background: var(--sbl-dark-surface);
  color: var(--sbl-on-dark);
}

.sbl-capstone .sbl-section-head > p:last-child,
.sbl-capstone .sbl-session summary small,
.sbl-capstone .sbl-session-grid p,
.sbl-capstone .sbl-session-lead p,
.sbl-capstone .sbl-claims p,
.sbl-capstone .sbl-concepts span {
  color: var(--sbl-on-dark-muted);
}

.sbl-capstone .sbl-session,
.sbl-capstone .sbl-session-list,
.sbl-capstone .sbl-session summary,
.sbl-capstone .sbl-session-lead,
.sbl-capstone .sbl-concepts span,
.sbl-capstone .sbl-session-open {
  border-color: rgb(244 240 233 / 22%);
}

.sbl-capstone-paths {
  display: grid;
  grid-template-columns: 1.25fr .85fr;
  grid-template-rows: 1fr 1fr;
  gap: 14px;
  margin-bottom: 62px;
}

.sbl-capstone-paths article {
  min-height: 178px;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid rgb(244 240 233 / 24%);
  border-radius: var(--sbl-radius);
}

.sbl-capstone-paths article:first-child {
  grid-row: 1 / 3;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 370px;
  background: var(--sbl-action);
  color: #fff;
}

.sbl-capstone-paths article > span,
.sbl-capstone .sbl-session-no {
  color: var(--sbl-accent-on-dark);
}

.sbl-capstone-paths article:first-child > span,
.sbl-capstone-paths article:first-child > p {
  color: #fff;
}

.sbl-capstone-paths h3 {
  max-width: 560px;
  margin: 22px 0 10px;
  font-size: clamp(1.35rem, 3vw, 2.65rem);
  letter-spacing: -.055em;
  line-height: 1.05;
}

.sbl-capstone-paths p {
  max-width: 540px;
  margin: 0;
  color: color-mix(in srgb, currentColor 76%, transparent);
  font-size: .78rem;
}

.sbl-capstone .sbl-session-grid {
  background: #3e474b;
}

.sbl-capstone .sbl-session-grid article {
  background: #232b2f;
}

.sbl-capstone .sbl-claims b {
  color: var(--sbl-on-dark);
}

.sbl-routes .sbl-shell {
  display: grid;
  grid-template-columns: minmax(260px, .64fr) minmax(0, 1.36fr);
  gap: clamp(48px, 8vw, 110px);
}

.sbl-routes-copy h2 {
  margin: 0 0 22px;
  font-size: clamp(2rem, 4vw, 3.8rem);
  letter-spacing: -.06em;
  line-height: 1.06;
}

.sbl-route-grid {
  display: grid;
  gap: 0;
  counter-reset: route;
}

.sbl-route-grid article {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 18px;
  padding: 25px 4px;
  border-top: 1px solid var(--sbl-line);
  counter-increment: route;
}

.sbl-route-grid article:last-child {
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-route-grid article::before {
  color: var(--sbl-accent-dark);
  content: "0" counter(route);
  font-size: .67rem;
  font-weight: 700;
}

.sbl-route-grid h3,
.sbl-route-grid p {
  grid-column: 2;
  margin: 0;
}

.sbl-route-grid h3 {
  margin-top: -44px;
  font-size: 1.25rem;
  letter-spacing: -.035em;
}

.sbl-route-grid p {
  color: var(--sbl-muted);
  font-size: .78rem;
}

.sbl-safety {
  background: color-mix(in srgb, var(--sbl-moss) 9%, var(--sbl-paper));
}

.sbl-safety .sbl-shell {
  display: grid;
  grid-template-columns: minmax(320px, .85fr) minmax(430px, 1.15fr);
  align-items: center;
  gap: clamp(50px, 9vw, 132px);
}

.sbl-safety-copy > p {
  margin-top: 24px;
}

.sbl-safety-copy ol {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: safety;
}

.sbl-safety-copy li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--sbl-line);
  color: var(--sbl-muted);
  counter-increment: safety;
  font-size: .78rem;
}

.sbl-safety-copy li::before {
  color: var(--sbl-accent-dark);
  content: "0" counter(safety);
  font-size: .65rem;
  font-weight: 700;
}

.sbl-photo-stack {
  position: relative;
  min-height: 520px;
}

.sbl-photo-stack figure {
  position: absolute;
  width: 72%;
  margin: 0;
}

.sbl-photo-stack figure:first-child {
  top: 0;
  left: 0;
}

.sbl-photo-stack figure:last-child {
  right: 0;
  bottom: 0;
}

.sbl-photo-stack img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 8px solid var(--sbl-paper-2);
  border-radius: var(--sbl-radius);
  box-shadow: var(--sbl-shadow);
}

.sbl-photo-stack figcaption {
  margin-top: 7px;
  color: var(--sbl-muted);
  font-size: .62rem;
}

.sbl-research {
  background: var(--sbl-paper-2);
}

.sbl-source-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--sbl-line);
}

.sbl-source-card {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 30px 28px;
  border-right: 1px solid var(--sbl-line);
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-source-card:nth-child(2n) {
  border-right: 0;
}

.sbl-source-card > span {
  color: var(--sbl-accent-dark);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.sbl-source-institution {
  justify-self: start;
  margin: 0;
  padding: 4px 10px;
  border: 1px solid color-mix(in srgb, var(--institution-color) 28%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--institution-color) 9%, transparent);
  color: var(--institution-color);
  font-size: .63rem;
  font-weight: 700;
  letter-spacing: .01em;
  line-height: 1.3;
}

@media (prefers-color-scheme: dark) {
  .sbl-source-institution {
    border-color: color-mix(in srgb, var(--institution-color) 62%, transparent);
    background: color-mix(in srgb, var(--institution-color) 30%, transparent);
    color: color-mix(in srgb, var(--institution-color) 24%, #f4f0e9);
  }
}

.sbl-source-card h3 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: -.02em;
  line-height: 1.35;
}

.sbl-source-card h3 a {
  text-decoration-color: color-mix(in srgb, var(--sbl-accent) 45%, transparent);
  text-underline-offset: 4px;
}

.sbl-source-card dl,
.sbl-source-card p {
  margin: 0;
}

.sbl-source-card dl div {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 12px;
  padding-top: 8px;
  border-top: 1px solid var(--sbl-soft-line);
}

.sbl-source-card dt {
  color: var(--sbl-muted);
  font-size: .63rem;
}

.sbl-source-card dd {
  margin: 0;
  font-size: .7rem;
}

.sbl-disclaimer {
  max-width: 860px;
  margin: 36px 0 0;
  color: var(--sbl-muted);
  font-size: .72rem;
}

.sbl-faq-grid {
  display: grid;
  grid-template-columns: minmax(260px, .7fr) minmax(0, 1.3fr);
  gap: clamp(52px, 9vw, 130px);
}

.sbl-faq h2 {
  font-size: clamp(2rem, 4vw, 3.7rem);
}

.sbl-faq details {
  border-top: 1px solid var(--sbl-line);
}

.sbl-faq details:last-child {
  border-bottom: 1px solid var(--sbl-line);
}

.sbl-faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 0;
  cursor: pointer;
  font-size: .88rem;
  font-weight: 700;
  list-style: none;
}

.sbl-faq summary::-webkit-details-marker {
  display: none;
}

.sbl-faq summary span {
  transition: transform 160ms ease;
}

.sbl-faq details[open] summary span {
  transform: rotate(45deg);
}

.sbl-faq details p {
  max-width: 680px;
  margin: -4px 0 24px;
  color: var(--sbl-muted);
  font-size: .78rem;
}

.sbl-final {
  padding-block: clamp(80px, 11vw, 150px);
  background: var(--sbl-accent);
  color: #fff;
}

.sbl-final .sbl-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .6fr);
  align-items: end;
  gap: 48px;
}

.sbl-final h2 {
  max-width: 780px;
}

.sbl-final p {
  margin-top: 22px;
  color: rgb(255 255 255 / 82%);
}

.sbl-button-light {
  justify-self: end;
  background: #fff;
  color: #72291f;
}

.sbl-footer {
  padding-block: 28px;
  background: var(--sbl-ink);
  color: var(--sbl-paper);
}

.sbl-footer .sbl-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.sbl-footer p {
  margin: 0;
  color: color-mix(in srgb, var(--sbl-paper) 65%, transparent);
  font-size: .68rem;
}

.sbl-footer a {
  font-size: .7rem;
  font-weight: 700;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--sbl-accent) 80%, #fff);
  outline-offset: 3px;
}

[data-sbl-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 560ms ease, transform 560ms cubic-bezier(.2, .8, .2, 1);
}

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

@media (max-width: 980px) {
  :root {
    --sbl-shell: min(100% - 36px, 820px);
  }

  .sbl-nav nav {
    display: none;
  }

  .sbl-hero-grid,
  .sbl-safety .sbl-shell,
  .sbl-routes .sbl-shell {
    grid-template-columns: 1fr;
  }

  .sbl-hero-grid {
    align-content: center;
  }

  .sbl-hero-copy {
    max-width: 710px;
  }

  .sbl-hero-media {
    max-width: 740px;
  }

  .sbl-research-banner .sbl-shell {
    grid-template-columns: 120px 1fr;
  }

  .sbl-research-banner small {
    grid-column: 2;
  }

  .sbl-method-grid,
  .sbl-faq-grid {
    grid-template-columns: 1fr;
  }

  .sbl-method-grid {
    gap: 48px;
  }

  .sbl-photo-stack {
    width: min(100%, 720px);
    min-height: 610px;
  }
}

@media (max-width: 720px) {
  :root {
    --sbl-shell: calc(100% - 28px);
    --sbl-nav-height: 64px;
  }

  .sbl-brand span {
    display: none;
  }

  .sbl-nav-actions {
    gap: 6px;
  }

  .sbl-language {
    white-space: nowrap;
  }

  .sbl-nav-cta {
    padding: 9px 13px;
  }

  .sbl-hero-grid {
    min-height: auto;
    gap: 48px;
    padding-block: 52px 66px;
  }

  .sbl-hero h1 {
    font-size: clamp(2.75rem, 13.6vw, 4.6rem);
  }

  .sbl-hero-lead {
    margin-top: 22px;
  }

  .sbl-university-rail ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sbl-university-mark {
    min-height: 68px;
    padding: 11px 12px;
  }

  .sbl-university-mark strong {
    font-size: .9rem;
  }

  .sbl-actions {
    align-items: stretch;
  }

  .sbl-button {
    flex: 1 1 100%;
  }

  .sbl-hero-media::before {
    inset: -10px 14px 16px -10px;
  }

  .sbl-hero-media figcaption {
    max-width: 78%;
  }

  .sbl-research-banner .sbl-shell,
  .sbl-section-head,
  .sbl-final .sbl-shell {
    grid-template-columns: 1fr;
  }

  .sbl-research-banner .sbl-shell {
    gap: 13px;
  }

  .sbl-research-banner small {
    grid-column: auto;
  }

  .sbl-facts ul {
    grid-template-columns: 1fr 1fr;
  }

  .sbl-facts li:nth-child(3) {
    border-top: 1px solid var(--sbl-line);
  }

  .sbl-facts li:nth-child(4) {
    border-top: 1px solid var(--sbl-line);
    border-right: 1px solid var(--sbl-line);
  }

  .sbl-section {
    padding-block: 78px;
  }

  .sbl-section-head {
    align-items: start;
    gap: 20px;
  }

  .sbl-section-head .sbl-kicker {
    margin-bottom: -5px;
  }

  .sbl-section-head h2,
  .sbl-safety h2,
  .sbl-final h2 {
    font-size: clamp(2.25rem, 10vw, 3.6rem);
  }

  .sbl-demo-tabs {
    display: flex;
    overflow-x: auto;
    padding-inline: 8px;
    scrollbar-width: thin;
  }

  .sbl-demo-tabs button {
    flex: 0 0 auto;
    padding-inline: 16px;
  }

  .sbl-demo-panel {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 38px;
    padding: 28px 20px 34px;
  }

  .sbl-metric-board {
    grid-template-columns: 1fr;
  }

  .sbl-metric-board small,
  .sbl-pulse-trace {
    grid-column: auto;
  }

  .sbl-network canvas {
    min-height: 250px;
  }

  .sbl-method ol,
  .sbl-capstone-paths,
  .sbl-source-grid,
  .sbl-session-grid,
  .sbl-claims {
    grid-template-columns: 1fr;
  }

  .sbl-method li:nth-last-child(2) {
    border-bottom: 0;
  }

  .sbl-capstone-paths {
    grid-template-rows: auto;
  }

  .sbl-capstone-paths article:first-child {
    grid-row: auto;
    min-height: 260px;
  }

  .sbl-session summary {
    grid-template-columns: 50px minmax(0, 1fr) 32px;
    gap: 10px;
    padding-block: 23px;
  }

  .sbl-session-body {
    padding: 0 0 32px;
  }

  .sbl-session-lead {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .sbl-session-grid article {
    padding: 18px;
  }

  .sbl-source-card,
  .sbl-source-card:nth-child(2n) {
    border-right: 0;
  }

  .sbl-photo-stack {
    min-height: 430px;
  }

  .sbl-photo-stack figure {
    width: 78%;
  }

  .sbl-button-light {
    justify-self: start;
  }

  .sbl-footer .sbl-shell {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

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

  [data-sbl-reveal] {
    opacity: 1;
    transform: none;
  }
}