/* Shared styles common to the three research-article page stylesheets.
   Loaded before each page's own stylesheet. Content-hashed: any edit
   requires re-hashing the filename and updating the referencing pages. */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg:          #0F1D2F;
  --bg-deep:     #0B1623;
  --bg-card:     #152336;
  --bg-card-alt: #1A2B40;
  --cream:       #F6F2EA;
  --cream-muted: rgba(246, 242, 234, 0.62);
  --coral:       #F4A287;
  --coral-lt:    #F8BBA2;
  --green:       #7CF2B5;
  --green-lt:    #A8FFD0;
  --serif:       'DM Serif Display', Georgia, serif;
  --sans:        'DM Sans', system-ui, sans-serif;
  --max-width:   1120px;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(15, 29, 47, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-wordmark {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--cream);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.dimple-dot { color: var(--coral); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: rgba(246,242,234,0.55);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.15s;
}
.nav-links a:hover { color: rgba(246,242,234,0.9); }
.nav-cta {
  background: var(--green) !important;
  color: var(--bg-deep) !important;
  padding: 9px 20px;
  border-radius: 100px;
  font-size: 13px !important;
  font-weight: 600 !important;
  transition: background 0.15s !important;
}
.nav-cta:hover { background: var(--green-lt) !important; }
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(246,242,234,0.55);
  letter-spacing: 0.02em;
  transition: color 0.15s;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
}
.nav-dropdown-toggle:hover { color: rgba(246,242,234,0.9); }
.nav-dropdown-toggle svg { width: 10px; height: 10px; transition: transform 0.2s; }
.nav-dropdown:hover .nav-dropdown-toggle svg { transform: rotate(180deg); }
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(246,242,234,0.6) !important;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.nav-dropdown-menu a:hover {
  background: rgba(255,255,255,0.06);
  color: rgba(246,242,234,0.95) !important;
}
.hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  padding: 8px; z-index: 200;
  -webkit-tap-highlight-color: transparent;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: rgba(246,242,234,0.85);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger span + span { margin-top: 6px; }
.hamburger.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0; bottom: 0;
  background: rgba(11, 22, 35, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 99;
  padding: 32px 24px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.mobile-menu.open { display: flex; flex-direction: column; gap: 8px; }
.mobile-menu a {
  font-size: 18px; font-weight: 500;
  color: rgba(246,242,234,0.7);
  text-decoration: none;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color 0.15s;
}
.mobile-menu a:active { color: var(--coral); }
.mobile-menu .nav-cta {
  display: inline-block; text-align: center;
  margin-top: 16px; padding: 14px 28px;
  border: none; border-bottom: none;
}
.mobile-dropdown { border-bottom: 1px solid rgba(255,255,255,0.06); }
.mobile-dropdown-toggle {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; background: none; border: none;
  font-size: 18px; font-weight: 500;
  color: rgba(246,242,234,0.7);
  padding: 14px 0; cursor: pointer;
  font-family: inherit; transition: color 0.15s;
}
.mobile-dropdown-toggle svg { transition: transform 0.25s; }
.mobile-dropdown-toggle.open svg { transform: rotate(180deg); }
.mobile-dropdown-items {
  display: none; flex-direction: column;
  padding-left: 16px; padding-bottom: 8px;
}
.mobile-dropdown-items.open { display: flex; }
.mobile-dropdown-items a {
  font-size: 16px; color: rgba(246,242,234,0.5);
  padding: 10px 0; border-bottom: none;
}
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}
section {
  padding: 80px 0;
}
.section-divider {
  border: 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin: 0;
}
.section-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 8px;
}
.section-label .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 8px;
  vertical-align: middle;
}
.heading-xl .cream { color: var(--cream); }
.heading-xl .coral-lt { color: var(--coral-lt); }
.heading-lg {
  font-family: var(--serif);
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 400;
  line-height: 1.25;
  color: var(--cream);
}
.heading-lg .coral { color: var(--coral); }
.heading-lg .green { color: var(--green-lt); }
.body-text {
  font-size: 17px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--cream-muted);
  max-width: 780px;
}
.body-text .green { color: var(--green-lt); font-weight: 400; }
.body-text .coral { color: var(--coral); font-weight: 400; }
.body-text .coral-bold { color: var(--coral); font-weight: 700; }
.body-text .cream { color: var(--cream); }
.body-text strong { color: var(--cream); font-weight: 500; }
.body-text-wide {
  font-size: 17px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--cream-muted);
}
.body-text-wide .green { color: var(--green-lt); font-weight: 400; }
.body-text-wide .coral { color: var(--coral); font-weight: 400; }
.pull-quote {
  font-family: var(--sans);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 300;
  line-height: 1.55;
  color: var(--cream);
  max-width: 900px;
}
.pull-quote .coral { color: var(--coral); }
.pull-quote .green { color: var(--green-lt); }
.meta-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cream);
}
.meta-value {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cream-muted);
}
.source-tag {
  font-size: 11px;
  font-weight: 400;
  color: var(--cream-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.hero-top-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 40px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 60px;
  align-items: end;
}
.hero-title .coral-lt { color: var(--coral-lt); }
.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.framing-note {
  padding: 40px 0 60px;
}
.framing-intro {
  font-size: 14px;
  line-height: 1.65;
  color: var(--cream-muted);
  max-width: 780px;
  margin-bottom: 16px;
}
.framing-intro strong {
  color: var(--cream);
  font-weight: 500;
}
.citations-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0;
}
.citation-badge {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cream-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  padding: 8px 16px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 48px 0;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 32px;
}
.stat-source {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
}
.stat-unit.coral-lt { color: var(--coral-lt); }
.stat-desc {
  font-size: 15px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--cream);
  margin-top: 16px;
}
.cycle-column {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 32px;
}
.ref-category {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 16px;
  margin-top: 40px;
}
.ref-category:first-of-type {
  margin-top: 0;
}
.ref-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 40px;
  margin-bottom: 16px;
}
.ref-item {
  font-size: 13px;
  line-height: 1.55;
}
.ref-tag {
  font-size: 11px;
  font-weight: 400;
  color: var(--green);
  display: block;
  margin-bottom: 4px;
}
.ref-authors {
  font-weight: 500;
  color: var(--cream);
}
.ref-title {
  font-weight: 400;
  color: var(--cream-muted);
}
.ref-journal {
  color: var(--coral-lt);
  font-style: italic;
}
.ref-pages {
  color: var(--cream-muted);
}
.page-footer {
  padding: 60px 0 80px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-logo-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a8a5e, #0e6620);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.footer-logo-circle svg {
  width: 20px;
  height: 20px;
}
.footer-dimple {
  font-family: var(--serif);
  font-size: 42px;
  font-weight: 400;
  color: var(--coral);
}
.footer-tagline {
  font-size: 13px;
  font-weight: 400;
  color: var(--cream-muted);
  margin-top: 8px;
}
.footer-right {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-right .meta-label {
  margin-bottom: 4px;
}
.footer-right .meta-value {
  line-height: 1.6;
}
.footer-email {
  font-size: 11px;
  font-weight: 400;
  color: var(--green-lt);
  text-decoration: none;
  margin-top: 8px;
  display: inline-block;
}
@media (max-width: 900px) {
  .container { padding: 0 24px; }
  nav { padding: 0 20px; }
  section { padding: 60px 0; }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .ref-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-right {
    text-align: left;
  }
  .nav-links { display: none; }
  .hamburger { display: flex; flex-direction: column; }
}
@media (max-width: 600px) {
  .container { padding: 0 16px; }
  nav { padding: 0 16px; }
  section { padding: 40px 0; }
}
.footer-legal { font-size: 12px; color: rgba(255,255,255,0.45); max-width: 640px; line-height: 1.7; text-align: center; }
.skip-link{position:absolute;left:-9999px;top:0;z-index:2000;background:#0E6620;color:#fff;padding:10px 18px;border-radius:0 0 10px 0;font-size:14px;font-weight:600;text-decoration:none}
.skip-link:focus{left:0}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid #FF9A83;outline-offset:2px}
@media (prefers-reduced-motion: reduce) {
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}