/* Nurture Map Lab — site styles */

:root {
  --paper: #f7f4ee;
  --ink: #13272d;
  --ink-2: #2f4246;
  --body: #3e5257;
  --muted: #45565b;
  --rule: rgb(19 39 45 / 14%);
  --rule-strong: rgb(19 39 45 / 30%);
  --accent: #a3473a;
  --accent-dark: #8a3a2f;
  --accent-text: #8f3d31;
  --link: #2d6b6e;
  --tint: #e4eeea;
  --deep: #10303a;
  --on-deep: #f3efe7;
  --on-deep-muted: #b4c6c6;
  --on-deep-rule: rgb(243 239 231 / 25%);
  --serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --sans: "Instrument Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --zh: "Noto Serif SC", "Songti SC", "Source Han Serif SC", serif;
  --gutter: clamp(20px, 4vw, 48px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; }

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--accent); }

/* Titles in lists (papers, grants, news, tool links) stay clean;
   the underline appears on hover or keyboard focus. */
.pub-title, .grant a, .news-text a, .method-links a { text-decoration: none; }
.pub-title:hover, .grant a:hover, .news-text a:hover, .method-links a:hover,
.pub-title:focus-visible, .grant a:focus-visible, .news-text a:focus-visible, .method-links a:focus-visible {
  color: var(--accent);
  text-decoration: underline;
}
:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; }

h1, h2, h3 { margin: 0; font-family: var(--serif); font-weight: 400; }

.skip-link {
  position: absolute;
  top: -80px;
  left: 12px;
  z-index: 10;
  padding: 8px 12px;
  border: 1px solid var(--rule);
  background: var(--paper);
}
.skip-link:focus { top: 12px; }

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding-right: var(--gutter);
  padding-left: var(--gutter);
}

.kicker {
  margin: 0;
  color: var(--accent-text);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.subhead {
  margin: 0 0 16px;
  color: var(--muted);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.display {
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

/* Buttons and links */

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 2px;
  background: var(--ink);
  color: var(--paper);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
}
.btn:hover { background: #0b1a1e; color: var(--paper); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); color: #fff; }

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  margin-top: 28px;
}

/* Header */

.site-header { border-bottom: 1px solid rgb(19 39 45 / 12%); }

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 32px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 3px;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { color: var(--ink); }

.brand-name {
  font-family: var(--serif);
  font-size: 25px;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.brand-sub {
  color: var(--muted);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 26px;
  font-size: 15px;
}

.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  text-decoration: none;
}
.nav a:hover { color: var(--accent); }

.nav .nav-cta {
  padding: 0 18px;
  border-radius: 2px;
  background: var(--accent);
  color: #fff;
  font-weight: 500;
}
.nav .nav-cta:hover { background: var(--accent-dark); color: #fff; }

/* Hero and the Nurture Map */

.hero-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px 72px;
  padding-top: clamp(40px, 6vw, 80px);
}

.hero-copy { flex: 1 1 560px; min-width: 0; }

.hero-copy h1 {
  margin-top: 18px;
  font-size: clamp(40px, 5.4vw, 76px);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.hero-lead {
  max-width: 600px;
  margin: 24px 0 0;
  color: var(--body);
  font-size: clamp(17px, 1.4vw, 19px);
  text-wrap: pretty;
}

/* Life-cycle animation: pregnancy → mother and baby → running child,
   along a drawn growth path. Plays once on load (about 8 seconds). */

.life-cycle {
  position: relative;
  flex: 0 0 auto;
  width: min(300px, 64vw);
  aspect-ratio: 2 / 3;
  margin: 0 auto;
}

.growth-path {
  position: absolute;
  inset: 2% -9% 0;
  width: 118%;
  height: 98%;
  overflow: visible;
  pointer-events: none;
}

.growth-wash,
.growth-line {
  fill: none;
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
  stroke-linecap: round;
}
.growth-wash { stroke: rgb(45 107 110 / 10%); stroke-width: 13; }
.growth-line { stroke: rgb(45 107 110 / 42%); stroke-width: 1.5; }

.milestone {
  fill: var(--paper);
  stroke: var(--link);
  stroke-width: 1.6;
  transform-box: fill-box;
  transform-origin: center;
}
.milestone-child { stroke: var(--accent); }

.life-stage { position: absolute; z-index: 1; inset: 0; opacity: 0; mix-blend-mode: multiply; }
.life-stage-infant { opacity: 1; }

.life-sprite {
  position: absolute;
  inset: 0;
  background-position: 0 0;
  background-repeat: no-repeat;
}
.life-sprite-pregnancy { background-image: url("/images/life-pregnancy.webp"); background-size: 500% 100%; }
.life-sprite-infant { background-image: url("/images/life-mother-infant.webp"); background-size: 500% 100%; }
.life-sprite-child { background-image: url("/images/life-child.webp"); background-size: 700% 100%; }

/* Before it scrolls into view: first frame (pregnant mother, no path yet).
   .motion is set only for visitors who haven't asked for reduced motion;
   everyone else sees the still mother-and-baby frame with the full path. */
.motion .life-cycle:not(.is-playing) .growth-wash,
.motion .life-cycle:not(.is-playing) .growth-line { stroke-dashoffset: 1; }
.motion .life-cycle:not(.is-playing) .milestone { opacity: 0; }
.motion .life-cycle:not(.is-playing) .life-stage-pregnancy { opacity: 1; }
.motion .life-cycle:not(.is-playing) .life-stage-infant { opacity: 0; }

.motion .life-cycle.is-playing .growth-wash,
.motion .life-cycle.is-playing .growth-line { animation: growth-draw 7.8s cubic-bezier(0.3, 0.65, 0.28, 1) both; }
.motion .life-cycle.is-playing .milestone { animation: milestone-in 520ms ease-out both; }
.motion .life-cycle.is-playing .milestone-pregnancy { animation-delay: 180ms; }
.motion .life-cycle.is-playing .milestone-infant { animation-delay: 2.45s; }
.motion .life-cycle.is-playing .milestone-child { animation-delay: 5.15s; }

.motion .life-cycle.is-playing .life-stage-pregnancy { animation: stage-pregnancy 7.8s cubic-bezier(0.45, 0, 0.2, 1) both; }
.motion .life-cycle.is-playing .life-stage-infant { animation: stage-infant 7.8s cubic-bezier(0.45, 0, 0.2, 1) both; }
.motion .life-cycle.is-playing .life-stage-child { animation: stage-child 7.8s cubic-bezier(0.45, 0, 0.2, 1) both; }

.motion .life-cycle.is-playing .life-sprite-pregnancy { animation: sprite-sheet 1s steps(4, end) 0s 2 alternate both; }
.motion .life-cycle.is-playing .life-sprite-infant { animation: sprite-sheet 1.1s steps(4, end) 2.2s 2 alternate both; }
.motion .life-cycle.is-playing .life-sprite-child { animation: sprite-sheet 0.76s steps(6, end) 4.85s 3 normal both; }

@keyframes growth-draw {
  0%, 7% { stroke-dashoffset: 1; }
  78%, 100% { stroke-dashoffset: 0; }
}
@keyframes milestone-in {
  from { opacity: 0; transform: scale(0.55); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes stage-pregnancy {
  0%, 28% { opacity: 1; filter: blur(0); transform: translate3d(0, 1px, 0) scale(0.995); }
  38%, 100% { opacity: 0; filter: blur(1.2px); transform: translate3d(0, -1px, 0) scale(1.003); }
}
@keyframes stage-infant {
  0%, 28% { opacity: 0; filter: blur(1.2px); transform: translate3d(0, 2px, 0) scale(0.992); }
  38%, 60% { opacity: 1; filter: blur(0); transform: none; }
  70%, 100% { opacity: 0; filter: blur(1.2px); transform: translate3d(0, -1px, 0) scale(1.003); }
}
@keyframes stage-child {
  0%, 60% { opacity: 0; filter: blur(1.4px); transform: translate3d(0, 7px, 0) scale(0.96); }
  70% { opacity: 1; filter: blur(0); transform: translate3d(0, 2px, 0) scale(0.985); }
  100% { opacity: 1; filter: blur(0); transform: none; }
}

.map {
  padding-top: clamp(48px, 6vw, 80px);
  padding-bottom: clamp(56px, 7vw, 96px);
}

.map-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 32px;
  margin-bottom: 28px;
}

.map-head h2 { font-size: 28px; letter-spacing: -0.01em; }
.map-head h2 span { color: var(--muted); font-style: italic; font-weight: 300; }

.epigraph {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}
.epigraph .zh { color: var(--ink); font-family: var(--zh); font-size: 19px; }
.epigraph .en { font-family: var(--serif); font-style: italic; }
.epigraph .src { color: var(--accent-text); font-family: var(--zh); font-size: 13px; }

.stages {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  row-gap: 40px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.stage { min-width: 0; padding-right: 24px; mix-blend-mode: multiply; }

.stage-art { display: flex; align-items: flex-end; height: 210px; }
.stage-art img { display: block; width: auto; }
.stage-art .figure { height: 200px; }
.stage-art .organ { height: 128px; }

.node { position: relative; height: 1px; margin-top: 18px; }
.node::after {
  position: absolute;
  inset: 0;
  background: var(--rule-strong);
  content: "";
  transform-origin: left center;
}
.node::before {
  position: absolute;
  z-index: 1;
  top: -5px;
  left: 0;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

/* Watercolor sprites: a sheet of frames, shown one frame at a time */
.sprite {
  display: block;
  aspect-ratio: 2 / 3;
  background-position: 0 0;
  background-repeat: no-repeat;
  mix-blend-mode: multiply;  /* white paper of the watercolor takes the page color */
}
.sprite-pregnancy { background-image: url("/images/life-pregnancy.webp"); background-size: 500% 100%; }
.sprite-child { background-image: url("/images/life-child.webp"); background-size: 700% 100%; }
.sprite-mother-infant { background-image: url("/images/life-mother-infant.webp"); background-size: 500% 100%; }
.stage-art .sprite { height: 200px; }

.stage-num {
  margin: 20px 0 0;
  color: var(--accent-text);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stage h3 { margin-top: 4px; font-size: 24px; line-height: 1.2; }

.stage-text {
  margin: 8px 0 0;
  color: var(--body);
  font-size: 15px;
  line-height: 1.55;
}

/* Dark band */

.band { background: var(--deep); color: var(--on-deep); }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: 32px 48px;
  padding-top: clamp(44px, 5vw, 64px);
  padding-bottom: clamp(44px, 5vw, 64px);
}

.stat-value {
  margin: 0;
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 300;
  line-height: 1;
}

.stat-label {
  margin: 12px 0 0;
  color: var(--on-deep-muted);
  font-size: 16px;
  line-height: 1.5;
}

/* Sections */

.section { padding-top: clamp(64px, 8vw, 112px); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 48px;
}
.section-head > div { flex: 1 1 480px; min-width: 0; }
.section-head h2 { margin-top: 12px; }
.section-head > p {
  flex: 1 1 380px;
  min-width: 0;
  margin: 0;
  color: var(--body);
  font-size: 17px;
  text-wrap: pretty;
}

.rows { margin: 0; padding: 0; border-top: 1px solid var(--rule); list-style: none; }
.rows > li { border-bottom: 1px solid var(--rule); }

/* Research */

.programs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: 40px 48px;
  margin-top: 48px;
}

.program { min-width: 0; padding-top: 24px; border-top: 2px solid var(--ink); }
.program h3 { margin-top: 10px; font-size: 26px; line-height: 1.2; }
.program p { margin: 14px 0 0; color: var(--body); font-size: 16px; }

.program .question {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  font-style: italic;
  line-height: 1.4;
}

.support { margin-top: clamp(56px, 6vw, 80px); }

.grant {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 24px;
  padding: 16px 0;
}
.grant-num { flex: 0 0 190px; font-family: var(--mono); font-size: 14px; }
.grant a {
  flex: 1 1 420px;
  min-width: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
}
.grant-role { flex: 0 0 auto; color: var(--muted); font-size: 14px; }

/* Families */

.families { margin-top: clamp(64px, 8vw, 112px); background: var(--tint); }

.families .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px 72px;
  padding-top: clamp(48px, 6vw, 88px);
  padding-bottom: clamp(48px, 6vw, 88px);
}

.families-art {
  flex: 0 1 300px;
  display: block;
  width: 300px;
  max-width: 100%;
  min-width: 0;
}

.families-copy { flex: 1 1 520px; min-width: 0; }

.families h2 {
  margin-top: 12px;
  font-size: clamp(36px, 4.4vw, 56px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.families .lead { max-width: 580px; margin: 18px 0 0; color: var(--ink-2); font-size: 17px; }

.involved {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr));
  gap: 20px 28px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}
.involved li { min-width: 0; padding-top: 12px; border-top: 1px solid rgb(19 39 45 / 25%); }
.involved .when {
  margin: 0;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.involved .what { margin: 6px 0 0; color: var(--ink-2); font-size: 16px; }

.fine { margin: 18px 0 0; color: var(--ink-2); font-size: 15px; }

.also {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgb(19 39 45 / 18%);
  color: var(--ink-2);
  font-size: 15px;
}
.also a { color: #1f5558; font-weight: 500; }

/* People */

.avatar {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  overflow: hidden;
  border-radius: 50%;
  background: var(--tint);
  color: var(--link);
  font-family: var(--serif);
  font-size: 21px;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-lg { width: 132px; height: 132px; font-size: 40px; }

.pi {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px 40px;
  margin-top: 48px;
  padding: 32px 0;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--rule);
}

.pi-copy { flex: 1 1 520px; min-width: 0; }
.pi-copy h3 { margin-top: 6px; font-size: 34px; line-height: 1.15; }
.pi-copy h3 a { color: inherit; text-decoration: none; }
.pi-copy h3 a:hover { text-decoration: underline; text-underline-offset: 4px; }
.pi-title { margin: 6px 0 0; font-size: 15px; font-weight: 500; }
.pi-meta { margin: 8px 0 0; color: var(--muted); font-size: 15px; }

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 22px;
  margin-top: 8px;
  font-size: 14px;
}
.inline-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.members {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
  gap: 0 32px;
}

.member {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
}
.member .avatar { margin-bottom: 14px; }
.member h3 { font-size: 22px; line-height: 1.2; }
.member .role { margin: 0; font-size: 15px; font-weight: 500; }
.member .focus { margin: 0; color: var(--muted); font-size: 15px; }
.member .hl { margin: 10px 0 0; font-size: 15px; }
.member .hl + .hl { margin-top: 2px; }
.member .hl span { color: var(--accent-text); }

.lists {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(360px, 100%), 1fr));
  gap: 40px 64px;
  margin-top: 48px;
}

.pair-list > li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2px 16px;
  padding: 12px 0;
  font-family: var(--serif);
  font-size: 17px;
}
.pair-list > li span { color: var(--muted); font-family: var(--sans); font-size: 14px; }

/* Methods */

.methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
  gap: 0 48px;
  margin-top: 40px;
  border-top: 1px solid var(--rule);
}

.method { min-width: 0; padding: 22px 0 14px; border-bottom: 1px solid var(--rule); }
.method .tag {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.method h3 { margin-top: 6px; font-size: 24px; }
.method p { margin: 6px 0 0; color: var(--body); font-size: 16px; }
.method-links { display: flex; gap: 20px; font-size: 15px; font-weight: 500; }
.method-links a { display: inline-flex; align-items: center; min-height: 44px; }

/* Publications */

.pubs { margin-top: 32px; }

.pub { display: flex; flex-wrap: wrap; gap: 4px 32px; padding: 20px 0; }
.pub-year { flex: 0 0 56px; color: var(--muted); font-family: var(--mono); font-size: 14px; }
.pub-body { flex: 1 1 520px; min-width: 0; }
.pub-title { color: var(--ink); font-family: var(--serif); font-size: 20px; line-height: 1.3; }
.pub-meta { margin: 6px 0 0; color: var(--body); font-size: 15px; }
.pub-meta strong { color: var(--ink); font-weight: 600; }

.more-link { margin: 20px 0 0; font-size: 15px; font-weight: 500; }

/* News */

.news {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 64px;
  padding-bottom: clamp(64px, 8vw, 112px);
}
.news-head { flex: 1 1 260px; min-width: 0; }
.news .rows { flex: 3 1 600px; min-width: 0; }

.news-item { display: flex; flex-wrap: wrap; gap: 2px 28px; padding: 16px 0; }
.news-date {
  flex: 0 0 150px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.news-text {
  flex: 1 1 360px;
  min-width: 0;
  margin: 0;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.4;
}
.news-text a { color: var(--ink); }
.news-text a:hover { color: var(--accent); }

/* Footer */

.site-footer { background: var(--deep); color: var(--on-deep); }
.site-footer a { color: var(--on-deep); }
.site-footer a:hover { color: #efc2b6; }
.site-footer .wrap { padding-top: clamp(56px, 7vw, 96px); padding-bottom: 40px; }

.paths {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
  gap: 32px 48px;
  margin-top: 36px;
}
.path { min-width: 0; padding-top: 16px; border-top: 1px solid var(--on-deep-rule); }
.path h3 { font-size: 22px; }
.path p { margin: 8px 0 0; color: var(--on-deep-muted); font-size: 16px; }
.path a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 6px;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px 40px;
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--on-deep-rule);
  color: var(--on-deep-muted);
  font-size: 14px;
}
.footer-id { display: flex; flex-direction: column; gap: 4px; }
.footer-id .brand-name { color: var(--on-deep); }
.footer-links { display: flex; flex-wrap: wrap; gap: 0 24px; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
.copyright { margin: 24px 0 0; color: var(--on-deep-muted); font-size: 14px; }

.footer-simple { border-top: 1px solid rgb(19 39 45 / 12%); }
.footer-simple .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 32px;
  padding-top: 20px;
  padding-bottom: 20px;
  color: var(--muted);
  font-size: 14px;
}
.footer-simple a { display: inline-flex; align-items: center; min-height: 44px; }

/* MOON Study page */

.moon-hero { background: var(--tint); }
.moon-hero .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px 80px;
  padding-top: clamp(48px, 7vw, 96px);
  padding-bottom: clamp(48px, 7vw, 96px);
}
.moon-hero h1 {
  margin-top: 16px;
  font-size: clamp(38px, 5.4vw, 76px);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.moon-hero .lead {
  max-width: 600px;
  margin: 24px 0 0;
  color: var(--ink-2);
  font-size: clamp(17px, 1.4vw, 19px);
  text-wrap: pretty;
}

.steps { margin-top: 40px; }
.steps .stage-num { color: var(--muted); }
.steps .stage h3 { font-size: 23px; }
.steps .stage-text { color: var(--body); font-size: 16px; }

.know {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
  gap: 0 48px;
  margin-top: 32px;
  border-top: 1px solid var(--rule);
}
.know > div { min-width: 0; padding: 22px 0; border-bottom: 1px solid var(--rule); }
.know h3 { font-size: 22px; }
.know p { margin: 8px 0 0; color: var(--body); font-size: 16px; }

.contact-band .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 32px 80px;
  padding-top: clamp(56px, 7vw, 96px);
  padding-bottom: clamp(56px, 7vw, 96px);
}
.contact-band a { color: var(--on-deep); }
.contact-band a:hover { color: #efc2b6; }
.contact-intro { flex: 1 1 420px; min-width: 0; }
.contact-intro p { margin: 16px 0 0; color: var(--on-deep-muted); }
.contact-list { flex: 1 1 360px; min-width: 0; }
.contact-list > div { padding: 16px 0; border-top: 1px solid var(--on-deep-rule); }
.contact-list > div:last-child { border-bottom: 1px solid var(--on-deep-rule); }
.contact-list .label {
  margin: 0;
  color: var(--on-deep-muted);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.contact-list .value {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin: 0;
  font-family: var(--serif);
  font-size: 24px;
}
.contact-list p { color: var(--on-deep-muted); }

/* PI profile page */

.profile-hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px 48px;
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(40px, 5vw, 64px);
  border-bottom: 1px solid var(--rule);
}
.profile-hero .avatar-lg { width: 168px; height: 168px; }
.profile-hero h1 {
  margin-top: 10px;
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.profile-copy { flex: 1 1 520px; min-width: 0; }
.profile-copy .pi-title { font-size: 17px; }

.crumbs { margin: 0; color: var(--muted); font-size: 14px; }
.crumbs a { color: var(--muted); }

.prose { max-width: 760px; color: var(--body); font-size: 17px; }
.prose p { margin: 18px 0 0; text-wrap: pretty; }

.def { display: flex; flex-wrap: wrap; gap: 4px 32px; padding: 18px 0; }
.def dt, .def .term {
  flex: 0 0 240px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.35;
}
.def dd, .def .desc { flex: 1 1 420px; min-width: 0; margin: 0; color: var(--body); font-size: 16px; }
.def .when { display: block; color: var(--muted); font-family: var(--mono); font-size: 12px; }

/* Phones */

@media (max-width: 640px) {
  .nav { gap: 0 18px; font-size: 14px; }
  .nav .nav-cta { order: -1; justify-content: center; width: 100%; }

  .stages { row-gap: 28px; }
  .stage {
    display: grid;
    grid-template-columns: 84px minmax(0, 1fr);
    column-gap: 16px;
    padding-right: 0;
  }
  .stage-art { grid-row: 1 / 5; align-items: flex-start; height: auto; }
  .stage-art .organ { width: 84px; height: auto; max-height: 120px; object-fit: contain; }
  .stage-art .sprite { width: 84px; height: auto; }
  .stage .node { display: none; }
  .stage-num { margin-top: 0; }
  .steps .stage { display: block; }
  .steps .stage .node { display: block; }
  .steps .stage-num { margin-top: 20px; }

  .stat-value { font-size: 48px; }
  .families-art { width: 220px; }
  .pi-copy h3 { font-size: 30px; }
  .profile-hero .avatar-lg { width: 120px; height: 120px; }
}

/* Motion: plays once when a [data-play] element scrolls into view.
   The .motion class is only set when the visitor hasn't asked for reduced
   motion, so everyone else sees the finished, still version. */

@media (prefers-reduced-motion: no-preference) {
  .motion .stages[data-play]:not(.is-playing) .stage { opacity: 0; }
  .motion .stages[data-play]:not(.is-playing) .node::after { transform: scaleX(0); }
  .motion .stages[data-play]:not(.is-playing) .node::before { transform: scale(0); }

  .motion .stages.is-playing .stage { animation: stage-in 760ms cubic-bezier(0.2, 0.7, 0.2, 1) both; }
  .motion .stages.is-playing .node::after { animation: line-draw 900ms cubic-bezier(0.3, 0.6, 0.2, 1) both; }
  .motion .stages.is-playing .node::before { animation: dot-pop 420ms cubic-bezier(0.3, 1.5, 0.5, 1) both; }

  .motion .stages.is-playing .stage:nth-child(2),
  .motion .stages.is-playing .stage:nth-child(2) .node::after,
  .motion .stages.is-playing .stage:nth-child(2) .node::before { animation-delay: 200ms; }
  .motion .stages.is-playing .stage:nth-child(3),
  .motion .stages.is-playing .stage:nth-child(3) .node::after,
  .motion .stages.is-playing .stage:nth-child(3) .node::before { animation-delay: 400ms; }
  .motion .stages.is-playing .stage:nth-child(4),
  .motion .stages.is-playing .stage:nth-child(4) .node::after,
  .motion .stages.is-playing .stage:nth-child(4) .node::before { animation-delay: 600ms; }
  .motion .stages.is-playing .stage:nth-child(5),
  .motion .stages.is-playing .stage:nth-child(5) .node::after,
  .motion .stages.is-playing .stage:nth-child(5) .node::before { animation-delay: 800ms; }

  /* The pregnant mother sways; the child runs. */
  .motion .stages.is-playing .sprite-pregnancy { animation: sprite-sheet 1.1s steps(4, end) 500ms 2 alternate both; }
  .motion .stages.is-playing .sprite-child { animation: sprite-sheet 0.76s steps(6, end) 1.3s 3 normal both; }
  /* The mother rocks her baby. */
  .motion .sprite-mother-infant.is-playing { animation: sprite-sheet 1.2s steps(4, end) 300ms 2 alternate both; }
}

@keyframes stage-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}
@keyframes line-draw { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes dot-pop { from { transform: scale(0); } to { transform: scale(1); } }
@keyframes sprite-sheet { to { background-position: 100% 0; } }

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

@media print {
  .stage { opacity: 1 !important; transform: none !important; }
}