:root {
  /* Ground, ink and rules from the shared ecosystem tokens with pre-adoption
     fallbacks. The navy/teal/gold/plum accents and the soft tints stay local. */
  --bg: var(--mjm-bg, #f5f7fb);
  --paper: var(--mjm-surface, #ffffff);
  --paper-strong: #eef4f3;
  --ink: var(--mjm-ink, #172033);
  --muted: var(--mjm-muted, #5a6678);
  --line: var(--mjm-line, #d8e0e8);
  --mjm-accent: var(--mjm-teal, #2b817b);
  --navy: #203a5f;
  --teal: #2b817b;
  --teal-dark: #1f625e;
  --gold: #b78028;
  --gold-soft: #fff4df;
  --plum: #6e486a;
  --green-soft: #eaf5f1;
  --blue-soft: #ebf2fb;
  --plum-soft: #f4eef5;
  --shadow: 0 18px 46px rgba(23, 32, 51, .11);
  --radius: 8px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
}

a {
  color: var(--teal-dark);
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(183, 128, 40, .42);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: .75rem;
  z-index: 20;
  transform: translateY(-150%);
  padding: .7rem 1rem;
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  color: var(--navy);
  font-weight: 800;
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: .25rem;
}

.nav-links a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: .5rem .75rem;
  color: var(--muted);
  font-size: .94rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
}

.nav-links a:hover {
  color: var(--navy);
  background: var(--paper-strong);
}

.hero {
  width: min(var(--max), calc(100% - 32px));
  margin: 28px auto 0;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, .7fr);
  gap: 24px;
  align-items: stretch;
}

.hero-content,
.hero-panel,
.content-card,
.notice-card,
.irb-notice,
.survey-entry-card,
.framework-card,
details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-content {
  min-height: 520px;
  padding: clamp(28px, 6vw, 64px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    linear-gradient(135deg, rgba(43, 129, 123, .1), transparent 38%),
    linear-gradient(180deg, #fff, #f8fafc);
}

.context-line,
.section-label {
  margin: 0 0 .75rem;
  color: var(--teal-dark);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 1.1rem;
  color: var(--navy);
  font-size: clamp(2.35rem, 6vw, 5.25rem);
  line-height: .98;
  letter-spacing: 0;
}

h2 {
  color: var(--navy);
  font-size: clamp(1.75rem, 3.4vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  color: var(--navy);
  font-size: 1.18rem;
  line-height: 1.18;
}

.subtitle {
  max-width: 760px;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.hero-actions,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .76rem 1rem;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
}

.button.primary,
.button.card-button {
  background: var(--teal);
  color: #fff;
}

.button.secondary {
  color: var(--navy);
  background: #fff;
  border-color: var(--line);
}

.button.disabled {
  cursor: not-allowed;
  opacity: .68;
}

.button:hover {
  transform: translateY(-1px);
}

.button.disabled:hover {
  transform: none;
}

.hero-panel {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: var(--navy);
  color: #fff;
}

.hero-panel h2 {
  color: #fff;
  font-size: 1.7rem;
}

.hero-panel p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, .84);
}

.section {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(52px, 8vw, 86px) 0 0;
}

.page-intro {
  width: min(var(--max), calc(100% - 32px));
  margin: 36px auto 0;
}

.page-intro h1 {
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  line-height: 1.05;
}

.page-intro .subtitle {
  margin-bottom: 0;
}

.notice-title {
  margin-bottom: 22px;
  font-size: clamp(1.5rem, 3vw, 2.4rem);
}

.notice-subject {
  color: var(--navy);
  font-weight: 800;
}

.contact-entry {
  padding-left: 1rem;
  border-left: 3px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-bottom: 22px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.content-card,
.notice-card {
  padding: clamp(22px, 4vw, 34px);
}

.content-card.wide p {
  max-width: 940px;
  font-size: 1.08rem;
}

.content-card p:last-child,
.notice-card p:last-child {
  margin-bottom: 0;
}

.participant-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  list-style: none;
}

.participant-grid li {
  min-height: 78px;
  display: flex;
  align-items: center;
  padding: 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 700;
}

.accent-band {
  width: 100%;
  max-width: none;
  padding: clamp(52px, 8vw, 86px) max(16px, calc((100vw - var(--max)) / 2)) 0;
}

.accent-band::before {
  content: "";
  display: block;
  margin: 0 auto 34px;
  width: min(var(--max), 100%);
  height: 1px;
  background: var(--line);
}

.accent-band > .section-heading,
.survey-entry,
.accent-band > .role-note {
  width: min(var(--max), 100%);
  margin-left: auto;
  margin-right: auto;
}

.survey-entry {
  display: block;
}

.survey-entry-card {
  display: flex;
  flex-direction: column;
  max-width: 760px;
  min-height: 100%;
  padding: clamp(24px, 4vw, 34px);
  border-top: 6px solid var(--teal);
}

.survey-entry-card p {
  color: var(--muted);
  font-size: 1.08rem;
}

.survey-entry-card .button {
  width: fit-content;
  margin-top: .5rem;
}

.role-note {
  margin-top: 18px;
  margin-bottom: 0;
  padding: 16px 18px;
  background: var(--gold-soft);
  border-left: 5px solid var(--gold);
  border-radius: var(--radius);
  color: #4c3921;
}

.framework-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.framework-card {
  padding: 22px;
  box-shadow: none;
}

.framework-card:nth-child(1) {
  background: var(--green-soft);
}

.framework-card:nth-child(2) {
  background: var(--blue-soft);
}

.framework-card:nth-child(3) {
  background: var(--plum-soft);
}

.framework-card:nth-child(4) {
  background: #f8f1e8;
}

.framework-card.span-two {
  grid-column: span 2;
  background: #fff;
  border-left: 5px solid var(--teal);
}

.framework-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 26px;
  align-items: start;
}

.section-heading.compact {
  display: block;
}

.expect-list {
  display: grid;
  gap: 12px;
}

.expect-list div {
  padding: 17px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.privacy-section {
  width: 100%;
  max-width: none;
  padding: clamp(52px, 8vw, 86px) max(16px, calc((100vw - var(--max)) / 2)) 0;
}

.privacy-section .section-heading,
.privacy-section .notice-card {
  width: min(var(--max), 100%);
  margin-left: auto;
  margin-right: auto;
}

.notice-card {
  background: #102a43;
  color: #fff;
  border-color: #102a43;
}

.notice-card p {
  color: rgba(255, 255, 255, .9);
  font-size: 1.08rem;
}

.irb-notice {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .85fr);
  gap: 28px;
  padding: clamp(24px, 4vw, 36px);
  border-left: 6px solid var(--gold);
}

.irb-notice p {
  color: var(--muted);
}

.researcher-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.researcher-list div {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.researcher-list dt {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.researcher-list dd {
  margin: .15rem 0 0;
  color: var(--ink);
  font-weight: 700;
}

.faq-list {
  display: grid;
  gap: 12px;
}

details {
  padding: 0;
  box-shadow: none;
}

summary {
  min-height: 56px;
  padding: 16px 18px;
  color: var(--navy);
  cursor: pointer;
  font-weight: 800;
}

details p {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--muted);
}

.site-footer {
  width: min(var(--max), calc(100% - 32px));
  margin: clamp(52px, 8vw, 86px) auto 0;
  padding: 28px 0 34px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
}

.site-footer p {
  margin: .35rem 0 0;
  color: var(--muted);
}

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

.footer-links a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: .55rem .75rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 700;
  text-decoration: none;
}

.footer-note {
  grid-column: 1 / -1;
  font-size: .95rem;
}

@media (max-width: 920px) {
  .nav-wrap,
  .hero,
  .section,
  .site-footer {
    width: min(100% - 24px, var(--max));
  }

  .nav-wrap,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .section-heading,
  .split-section,
  .irb-notice {
    grid-template-columns: 1fr;
  }

  .hero-content {
    min-height: 0;
  }

  .participant-grid,
  .framework-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .framework-card.span-two {
    grid-column: span 1;
  }

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

@media (max-width: 620px) {
  .site-header {
    position: static;
  }

  .hero {
    margin-top: 12px;
  }

  .hero-content,
  .hero-panel,
  .content-card,
  .notice-card,
  .irb-notice,
  .survey-entry-card,
  .framework-card {
    box-shadow: none;
  }

  .participant-grid,
  .framework-grid {
    grid-template-columns: 1fr;
  }

  .participant-grid li {
    min-height: 0;
  }

  .button,
  .survey-entry-card .button,
  .footer-links a {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}