:root {
  --ink: #1a2330;
  --muted: #4a5564;
  --baby: #9fe0f7;
  --baby-bright: #6fd2f5;
  --baby-wash: #d4f2fc;
  --paper: #f7fcff;
  --white: #ffffff;
  --navy: #16324f;
  --navy-deep: #10263c;
  --emphasis: #0d3f86;
  --link: #0a5a96;
  --line: rgba(22, 50, 79, 0.12);
  --extrinsic: #2e6ea3;
  --extrinsic-soft: #d7ebf7;
  --intrinsic: #8a4a72;
  --intrinsic-soft: #f3dce8;
  --sans: "Montserrat", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --header-offset: 4.75rem;
  --nav-glass: rgba(255, 255, 255, 0.72);
  --nav-shadow: 0 10px 28px rgba(16, 38, 60, 0.1);
  --cloud: rgba(255, 255, 255, 0.72);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ink: #e7f1f8;
  --muted: #b7c8d6;
  --baby: #1b4c68;
  --baby-bright: #2b7ca8;
  --baby-wash: #16384c;
  --paper: #0e1a24;
  --white: #142333;
  --navy: #d5e7f5;
  --navy-deep: #071018;
  --emphasis: #8ec8f4;
  --link: #8ed0f5;
  --line: rgba(210, 228, 240, 0.16);
  --extrinsic: #4f92c4;
  --extrinsic-soft: #1b3d55;
  --intrinsic: #c989b0;
  --intrinsic-soft: #3a2433;
  --nav-glass: rgba(14, 28, 40, 0.72);
  --nav-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  --cloud: rgba(210, 232, 246, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-offset);
}

body {
  margin: 0;
  color: var(--ink);
  background: #4eaee0;
  font-family: var(--sans);
  font-size: 0.98rem;
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.52;
}

html[data-theme="dark"] body {
  background: #0a2233;
}

h1,
h2,
h3,
h4 {
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.22;
}

img,
iframe {
  max-width: 100%;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

a:hover,
a:focus-visible {
  color: var(--navy);
}

.mark {
  color: var(--emphasis);
  font-weight: 400;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 80;
  padding: 0.5rem 0.8rem;
  background: var(--navy-deep);
  color: #fff;
}

.skip-link:focus {
  top: 0.75rem;
}

.site-header {
  position: fixed;
  top: 0.85rem;
  left: 0;
  right: 0;
  z-index: 50;
  pointer-events: none;
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(72rem, calc(100% - 1.5rem));
  margin: 0 auto;
  position: relative;
}

.site-nav {
  display: flex;
  gap: 0.1rem;
  justify-content: center;
  flex-wrap: wrap;
  pointer-events: auto;
  padding: 0.15rem 0.45rem;
  background: var(--nav-glass);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--nav-shadow);
  backdrop-filter: blur(16px);
}

.site-nav > a,
.research-nav > summary {
  display: inline-flex;
  align-items: center;
  min-height: 2.6rem;
  padding: 0 0.95rem;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  text-decoration: none;
  background: none;
  border: 0;
  cursor: pointer;
}

.site-nav > a[aria-current="page"],
.research-nav[data-current="true"] > summary {
  box-shadow: inset 0 -1.5px 0 var(--navy);
}

.research-nav {
  position: relative;
}

.research-nav > summary {
  list-style: none;
}

.research-nav > summary::-webkit-details-marker {
  display: none;
}

.research-nav-menu {
  position: absolute;
  top: calc(100% + 0.45rem);
  left: 50%;
  min-width: 11rem;
  padding: 0.4rem;
  transform: translateX(-50%);
  background: var(--nav-glass);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  box-shadow: var(--nav-shadow);
  backdrop-filter: blur(16px);
}

.research-nav-menu a {
  display: block;
  padding: 0.5rem 0.7rem;
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 300;
  text-decoration: none;
  border-radius: 0.5rem;
}

.research-nav-menu a:hover,
.research-nav-menu a:focus-visible {
  background: var(--baby-wash);
}

.theme-toggle {
  pointer-events: auto;
  position: absolute;
  right: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  padding: 0;
  color: var(--ink);
  background: var(--nav-glass);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--nav-shadow);
  backdrop-filter: blur(16px);
  cursor: pointer;
}

.theme-toggle svg {
  width: 1.05rem;
  height: 1.05rem;
}

html[data-theme="light"] .icon-sun,
html[data-theme="dark"] .icon-moon {
  display: none;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page main {
  flex: 1;
  padding-top: var(--header-offset);
  background: transparent;
}

.wrap {
  width: min(46rem, calc(100% - 2rem));
  margin-inline: auto;
}

.wide {
  width: min(68rem, calc(100% - 2rem));
}

.hero,
.closing {
  position: relative;
  overflow: hidden;
  background: transparent;
}

.hero {
  display: flex;
  align-items: center;
  min-height: calc(100svh + 7rem);
  padding: clamp(5rem, 14vh, 9rem) 0 clamp(7rem, 18vh, 11rem);
}

.closing {
  display: flex;
  align-items: center;
  min-height: calc(88svh - var(--header-offset));
  padding: clamp(5.5rem, 16vh, 9.5rem) 0;
}

.hero-copy,
.closing-copy {
  position: relative;
  width: min(54rem, calc(100% - 2rem));
  margin-inline: auto;
}

.hero h1,
.closing h1,
.page-heading {
  margin: 0 0 1.1rem;
  font-size: clamp(2.05rem, 4.4vw, 2.85rem);
  font-weight: 400;
  letter-spacing: -0.04em;
}

.hero h1,
.closing h1 {
  font-size: clamp(2.6rem, 6vw, 3.8rem);
  font-weight: 300;
}

.hero h2,
.page-deck {
  max-width: 38rem;
  margin: 0 0 1.15rem;
  font-size: clamp(1.12rem, 2vw, 1.38rem);
  font-weight: 300;
  line-height: 1.42;
  letter-spacing: -0.025em;
}

.hero h2 {
  margin-top: 2.4rem;
}

.section {
  padding: 3.1rem 0;
}

.section h2 {
  margin: 0 0 1.1rem;
  font-size: clamp(1.2rem, 2vw, 1.4rem);
  font-weight: 400;
}

.section h3,
.section h4 {
  margin: 1.4rem 0 0.5rem;
  font-size: 1.02rem;
  font-weight: 400;
}

.section p,
.section li {
  margin: 0 0 0.9rem;
}

.end-link {
  display: flex;
  justify-content: flex-end;
  margin: 0.35rem 0 1.6rem;
}

.arrow-link,
.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  color: var(--navy);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.cta {
  margin-top: 3rem;
}

.hero-copy .end-link {
  justify-content: flex-end;
  width: min(38rem, 100%);
}

.arrow-link:hover,
.arrow-link:focus-visible,
.cta:hover,
.cta:focus-visible {
  color: var(--link);
}

.arrow-nw {
  width: 0.82rem;
  height: 0.82rem;
  flex: 0 0 auto;
}

.findings-support,
.page-support {
  max-width: 38rem;
  margin: 0 0 1.4rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.5;
}

.chart-frame {
  margin: 1.5rem 0 2rem;
}

.chart-frame iframe {
  width: 100%;
  height: min(46rem, 78vw);
  min-height: 28rem;
  border: 1px solid var(--line);
  background: var(--white);
}

.chart-frame figcaption,
.risk-map figcaption,
.photo-caption {
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.timeline {
  margin: 1.5rem 0 1.25rem;
  padding: 0 0 0 0.2rem;
  list-style: none;
  border-left: 1px solid var(--line);
}

.timeline li {
  position: relative;
  margin: 0 0 1.15rem;
  padding: 0 0 0 1.35rem;
}

.timeline li::before {
  content: "";
  position: absolute;
  top: 0.42rem;
  left: -0.29rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--navy);
}

.aims {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.5rem;
}

.aims p {
  margin: 0;
  padding: 0.9rem 1rem;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
}

html[data-theme="dark"] .aims p {
  background: rgba(20, 35, 51, 0.7);
}

.define-box {
  margin: 0 0 1.6rem;
  padding: 1.05rem 1.15rem;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
}

html[data-theme="dark"] .define-box {
  background: rgba(20, 35, 51, 0.7);
}

.risk-map {
  margin: 1.5rem 0 2rem;
}

.risk-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.risk-col h3 {
  margin: 0;
  padding: 0.7rem 0.9rem;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 400;
  text-align: center;
}

html[data-theme="dark"] .risk-col h3 {
  color: #0e1a24;
}

.risk-col.extrinsic h3 {
  background: var(--extrinsic);
}

.risk-col.intrinsic h3 {
  background: var(--intrinsic);
}

.risk-group {
  margin-top: 0.75rem;
  padding: 0.85rem;
}

.risk-col.extrinsic .risk-group {
  background: var(--extrinsic-soft);
}

.risk-col.intrinsic .risk-group {
  background: var(--intrinsic-soft);
}

.risk-group h4 {
  margin: 0 0 0.55rem;
  font-size: 0.9rem;
}

.risk-group ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.risk-group li {
  margin: 0 0 0.4rem;
  padding: 0.4rem 0.55rem;
  background: var(--white);
  font-size: 0.9rem;
}

.note {
  font-size: 0.9rem;
}

.step-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  margin: 1.2rem 0 1.5rem;
  padding: 0;
  list-style: none;
}

.step-grid > li {
  margin: 0;
  padding: 1rem 1.05rem 0.85rem;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
}

html[data-theme="dark"] .step-grid > li {
  background: rgba(20, 35, 51, 0.7);
}

.step-num {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--navy);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.step-grid > li p {
  margin: 0;
}

.step-grid > li.step-factors {
  grid-column: 1 / -1;
  padding-top: 0.85rem;
  padding-bottom: 0.75rem;
}

.factor-list {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  column-gap: 1.75rem;
  row-gap: 0.1rem;
  margin: 0.35rem 0 0.35rem;
  padding: 0;
  list-style: none;
}

.factor-list li {
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  color: var(--ink);
  line-height: 1.3;
}

.notes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.method-grid {
  display: grid;
  gap: 0.85rem;
  margin: 1.35rem 0 1.5rem;
}

.method-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.85rem;
}

.method-row-23 {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 0.85rem;
}

.method-card {
  padding: 1rem 1.05rem 0.4rem;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  opacity: 0;
  transform: translate3d(0, 0.7rem, 0);
  transition: opacity 1.6s ease, transform 1.6s ease;
}

.method-card.is-visible {
  opacity: 1;
  transform: none;
}

html[data-theme="dark"] .method-card {
  background: rgba(20, 35, 51, 0.72);
}

.method-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.92rem;
}

.method-card p {
  margin: 0 0 0.65rem;
  font-size: 0.86rem;
  line-height: 1.48;
}

.sex-banner {
  margin: 0 0 1.8rem;
  padding: 0.2rem 0 0.9rem;
}

.sex-banner .sex-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sex-banner h2 {
  margin: 0.1rem 0 0.12rem;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1;
}

.sex-banner--men h2 {
  color: var(--navy);
}

.sex-banner--women h2 {
  color: #6b3d62;
}

html[data-theme="dark"] .sex-banner--women h2 {
  color: #e0b4cf;
}

.result {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(14rem, 0.85fr);
  gap: 1.25rem;
  margin: 1.5rem 0 2.2rem;
  align-items: start;
}

.result-head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  margin-bottom: 0.85rem;
}

.section .result-head h3,
.section .result-head .stat {
  margin: 0;
  font-size: clamp(1.28rem, 2.1vw, 1.6rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.summary {
  padding: 1rem 1.1rem;
  background: var(--navy-deep);
  color: #fff;
  font-size: 0.9rem;
  line-height: 1.48;
}

.summary p {
  margin: 0;
  color: #fff;
}

html[data-theme="dark"] .summary {
  background: #e8f1f8;
}

html[data-theme="dark"] .summary p {
  color: #10263c;
}

.site-list {
  margin: 0.35rem 0 0;
  padding: 0;
  list-style: none;
}

.site-list li {
  margin: 0;
  padding: 0.12rem 0;
  color: var(--ink);
  font-size: 0.95rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 2.4rem;
  align-items: center;
}

.flow {
  display: grid;
  gap: 0.45rem;
  justify-items: stretch;
}

.flow p {
  margin: 0;
  padding: 0.85rem 0.95rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.4;
}

html[data-theme="dark"] .flow p {
  background: rgba(20, 35, 51, 0.72);
}

.flow .arrow {
  color: var(--navy);
  text-align: center;
}

.burden-panel {
  margin-top: 1.2rem;
  margin-bottom: 2.8rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line);
}

.burden-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1rem;
}

.burden-grid p {
  margin: 0;
  padding: 0.9rem 1rem;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid var(--line);
  border-left: 3px solid var(--navy);
  font-size: 0.88rem;
  line-height: 1.5;
}

html[data-theme="dark"] .burden-grid p {
  background: rgba(20, 35, 51, 0.68);
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
  padding: 3.1rem 0 4.5rem;
}

.about-side {
  order: -1;
  font-size: 0.95rem;
  line-height: 1.4;
}

.about-side h1 {
  margin: 0 0 0.4rem;
  font-size: 1.35rem;
  font-weight: 400;
}

.about-side .roles {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 300;
  line-height: 1.35;
}

.about-side .place {
  margin: 1rem 0;
}

.about-side p {
  margin: 0 0 0.2rem;
}

.about-side .end-link {
  justify-content: flex-start;
  margin: 0 0 0.15rem;
}

.portrait {
  width: 100%;
  max-width: 18.5rem;
  margin-top: 1.25rem;
  display: block;
  object-fit: cover;
  object-position: 50% 18%;
  aspect-ratio: 3 / 4;
}

.site-footer {
  padding: 1.35rem 0 1.15rem;
  background: var(--navy-deep);
  color: #eef5fb;
  font-size: 0.72rem;
  font-weight: 300;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.site-footer a {
  color: #d7ecf8;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.1rem;
  width: min(38rem, calc(100% - 2.5rem));
  margin: 0 auto;
}

.footer-name {
  margin: 0 0 0.16rem;
  font-size: 0.9rem;
  font-weight: 400;
}

.footer-role {
  margin: 0;
  line-height: 1.25;
}

.footer-place {
  margin: 0.9rem 0 0;
}

.footer-links {
  display: grid;
  gap: 0.28rem;
  justify-items: end;
}

.copyright {
  grid-column: 1 / -1;
  margin: 0.85rem 0 0;
  text-align: center;
  color: rgba(238, 245, 251, 0.72);
  font-size: 0.68rem;
}

.preview-chip {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  z-index: 60;
  padding: 0.35rem 0.7rem;
  background: var(--navy-deep);
  color: #fff;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
}

.sky-scene {
  position: relative;
  background: #3ea6dc;
}

html[data-theme="dark"] .sky-scene {
  background: #0a2233;
}

.sky-scene main,
.sky-scene .site-footer {
  position: relative;
  z-index: 1;
}

.sky-scene .hero,
.sky-scene .closing {
  background: transparent;
}

.sky {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  background:
    radial-gradient(ellipse at 50% 78%, rgba(255, 255, 255, 0.5) 0%, transparent 42%),
    linear-gradient(180deg, #3ea6dc 0%, #6fc4ec 36%, #9edaf3 68%, #c8edfa 100%);
}

html[data-theme="dark"] .sky {
  background:
    radial-gradient(ellipse at 50% 78%, rgba(80, 140, 180, 0.32) 0%, transparent 42%),
    linear-gradient(180deg, #071b2a 0%, #0c2a3d 42%, #10283a 100%);
}

.cloud {
  position: absolute;
  border-radius: 50%;
  background: var(--cloud);
  filter: blur(42px);
  pointer-events: none;
}

.cloud-a {
  width: 48vw;
  height: 26vw;
  top: 6%;
  left: -10%;
  opacity: 0.85;
  animation: cloud-drift 28s ease-in-out infinite alternate;
}

.cloud-b {
  width: 40vw;
  height: 22vw;
  top: 16%;
  right: -8%;
  opacity: 0.75;
  animation: cloud-drift 36s ease-in-out infinite alternate-reverse;
}

.cloud-c {
  width: 56vw;
  height: 28vw;
  bottom: 4%;
  left: 14%;
  opacity: 0.7;
  animation: cloud-drift 42s ease-in-out infinite alternate;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  mix-blend-mode: overlay;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

.sky-scene .hero-copy {
  z-index: 1;
}

.cascade > * {
  animation: rise 1.05s ease both;
}

.cascade > *:nth-child(1) {
  animation-delay: 0.08s;
}

.cascade > *:nth-child(2) {
  animation-delay: 0.28s;
}

.cascade > *:nth-child(3) {
  animation-delay: 0.48s;
}

.cascade-on-view > * {
  opacity: 0;
  transform: translate3d(0, 0.7rem, 0);
}

.cascade-on-view.is-visible > * {
  animation: rise 1.05s ease both;
}

@keyframes cloud-drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(4vw, -3vh, 0) scale(1.06);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translate3d(0, 0.7rem, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@media (max-width: 800px) {
  .risk-grid,
  .result,
  .split,
  .footer-grid,
  .aims,
  .step-grid,
  .notes-grid,
  .method-row-3,
  .method-row-23,
  .burden-grid {
    grid-template-columns: 1fr;
  }

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

  .about-side .roles {
    white-space: normal;
  }

  .footer-links {
    justify-items: start;
  }

  .split .flow {
    order: -1;
  }

  .portrait {
    max-width: 16rem;
  }

  .hero {
    min-height: calc(100svh + 5rem);
  }

  .theme-toggle {
    right: 0.15rem;
  }

  .site-nav > a,
  .research-nav > summary {
    padding: 0 0.7rem;
  }
}

@media (min-width: 801px) {
  .about-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(16rem, 0.8fr);
  }

  .about-side {
    order: 0;
  }

  .about-side .roles {
    white-space: nowrap;
  }
}

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

  .cloud,
  .cascade > *,
  .cascade-on-view.is-visible > * {
    animation: none;
  }

  .cascade > *,
  .cascade-on-view > *,
  .method-card {
    opacity: 1;
    transform: none;
    transition: none;
  }
}