:root {
  color-scheme: dark;
  --ground: #073b38;
  --deep: #052f2d;
  --teal: #134e4a;
  --aqua: #5eead4;
  --aqua-soft: #99f6e4;
  --glass: rgba(242, 255, 252, 0.11);
  --glass-strong: rgba(242, 255, 252, 0.18);
  --line: rgba(153, 246, 228, 0.34);
  --white: #f5fffd;
  --mist: #d7f7f1;
  --ink: #062f2d;
  --warning: #ffd6b0;
  --shadow: 0 24px 70px rgba(0, 21, 20, 0.34);
  --max: 1180px;
  --measure: 69ch;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--deep); }
body {
  margin: 0;
  min-width: 0;
  background-color: var(--ground);
  color: var(--white);
  font-size: 17px;
  line-height: 1.68;
  overflow-x: hidden;
}

a { color: inherit; text-underline-offset: 0.2em; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--aqua);
  outline-offset: 4px;
}
img { display: block; max-width: 100%; }
p, li { font-size: 1rem; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; text-wrap: balance; }
h1 { font-size: clamp(2.65rem, 7vw, 5.8rem); letter-spacing: -0.057em; max-width: 12ch; margin-bottom: 1.6rem; }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); letter-spacing: -0.036em; max-width: 19ch; margin-bottom: 1.25rem; }
h3 { font-size: 1.22rem; letter-spacing: -0.015em; }

.skip-link {
  position: fixed;
  z-index: 100;
  left: 1rem;
  top: 1rem;
  min-height: 44px;
  padding: 0.65rem 1rem;
  background: var(--aqua);
  color: var(--ink);
  transform: translateY(-180%);
  border-radius: 999px;
  font-weight: 800;
}
.skip-link:focus { transform: translateY(0); }

.site-top {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.1rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-mark, .directory-jump {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--mist);
  font-size: 0.96rem;
  font-weight: 750;
  text-decoration: none;
}
.mark-orb {
  width: 1.55rem;
  height: 1.55rem;
  border: 2px solid var(--aqua);
  border-radius: 50% 50% 45% 45% / 36% 36% 64% 64%;
  box-shadow: inset 0 -0.45rem 0 rgba(94, 234, 212, 0.35);
}
.directory-jump { padding: 0 0.2rem; border-bottom: 1px solid var(--line); }

main { width: 100%; }
.hero {
  width: min(var(--max), calc(100% - 2rem));
  margin: 1.25rem auto 0;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(18rem, 0.92fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
  min-height: 71vh;
}
.hero-copy { padding: 4rem 0 5rem; }
.eyebrow, .section-kicker, .source-label, .callout-mark, .flow-label, .myth-word, .fact-word {
  color: var(--aqua);
  font-size: 1rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  line-height: 1.35;
  text-transform: uppercase;
}
.dek { max-width: 43rem; color: var(--mist); font-size: clamp(1.15rem, 2vw, 1.4rem); line-height: 1.55; }
.hero-media {
  position: relative;
  margin: 0;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 48% 48% 2.2rem 2.2rem / 14% 14% 2.2rem 2.2rem;
  padding: 0.72rem;
  background: var(--glass);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.18);
  backdrop-filter: blur(16px);
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 1.45rem -1rem -1.2rem 1.4rem;
  z-index: -1;
  border: 1px solid rgba(94,234,212,0.23);
  border-radius: inherit;
}
.hero-media img {
  aspect-ratio: 8 / 5;
  width: 100%;
  object-fit: cover;
  border-radius: 46% 46% 1.55rem 1.55rem / 13% 13% 1.55rem 1.55rem;
  background: #0d4541;
}
.beaker-neck {
  width: min(15rem, 38vw);
  height: 3.5rem;
  margin: -1.2rem auto 0;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 50% 50% 0 0;
  opacity: 0.7;
}

.curve-section, .page-section, .next-note {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}
.curve-section {
  position: relative;
  padding: clamp(4.5rem, 9vw, 8rem) clamp(1.2rem, 6vw, 5rem);
  background-color: #1a4a47;
  border: 1px solid var(--line);
  border-radius: 46% 46% 2.4rem 2.4rem / 5rem 5rem 2.4rem 2.4rem;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.14);
  backdrop-filter: blur(18px);
}
.curve-section > p, .page-section > p { max-width: var(--measure); }
.page-section { padding: clamp(4.2rem, 8vw, 7rem) 0; border-bottom: 1px solid var(--line); }
.page-section:last-of-type { border-bottom: 0; }
.intro-grid, .local-panel, .split-rule { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(17rem, 0.8fr); gap: clamp(2rem, 7vw, 6rem); align-items: start; }

.glass-callout, .check-panel, .urgent-panel {
  padding: clamp(1.4rem, 4vw, 2.7rem);
  background: rgba(94, 234, 212, 0.11);
  border: 1px solid var(--line);
  border-radius: 2rem 2rem 40% 2rem / 2rem 2rem 10% 2rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
}
.glass-callout.compact { padding: 2rem; }
.glass-callout p:last-child, .check-panel p:last-child { margin-bottom: 0; }
.button-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.button, .text-link {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.72rem 1.1rem;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 820;
  text-decoration: none;
}
.button.primary { background: var(--aqua); color: var(--ink); }
.button.quiet { border: 1px solid var(--line); background: var(--glass); color: var(--white); }
.text-link { justify-content: flex-start; padding-inline: 0; color: var(--aqua-soft); text-decoration: underline; }
.button:hover, .text-link:hover, .footer-directory a:hover { filter: brightness(1.08); }

.card-grid { display: grid; gap: 1rem; }
.card-grid.three-up { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.two-up { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.fact-card {
  min-width: 0;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 1.7rem;
}
.fact-card:nth-child(even) { border-radius: 1.7rem 1.7rem 45% 1.7rem / 1.7rem 1.7rem 12% 1.7rem; }
.data-chip {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0.25rem 0.72rem;
  margin-bottom: 1.2rem;
  border: 1px solid var(--aqua);
  border-radius: 999px;
  color: var(--aqua-soft);
  font-size: 0.88rem;
  font-weight: 780;
}

.source-note {
  max-width: var(--measure);
  margin-top: 2rem;
  padding: 1.25rem 1.35rem;
  border-left: 3px solid var(--aqua);
  background: rgba(0,0,0,0.12);
}
.source-note p { margin: 0.4rem 0 0.75rem; color: var(--mist); }
.source-links { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.source-links a {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 720;
}

.plain-list { margin: 0; padding-left: 1.3rem; }
.plain-list li { margin: 0.55rem 0; }
.check-dot { display: block; width: 3rem; height: 3rem; margin-bottom: 1.2rem; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 0 0.65rem rgba(94,234,212,0.14); }

.flow-line { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; }
.flow-line article { position: relative; padding: 1.4rem 2rem 1.4rem 1.5rem; border-top: 1px solid var(--aqua); }
.flow-line article::before { content: ""; position: absolute; width: 0.8rem; height: 0.8rem; top: -0.45rem; left: 0; border-radius: 50%; background: var(--aqua); }
.flow-line p { color: var(--mist); }

.myth-tools { display: flex; justify-content: flex-end; margin: 0 0 0.75rem; }
.myth-toggle {
  min-height: 46px;
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  color: var(--white);
  font: inherit;
  font-weight: 780;
  cursor: pointer;
}
.myth-stack { display: grid; gap: 0.8rem; margin-top: 2rem; }
.myth {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  background: rgba(4, 39, 37, 0.5);
}
.myth summary {
  min-height: 64px;
  display: grid;
  grid-template-columns: minmax(7rem, auto) 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  font-size: 1.08rem;
  font-weight: 790;
  cursor: pointer;
  list-style: none;
}
.myth summary::-webkit-details-marker { display: none; }
.myth summary::after { content: "+"; grid-column: 3; color: var(--aqua); font-size: 1.5rem; }
.myth[open] summary::after { content: "−"; }
.myth-answer { padding: 0.25rem 1.25rem 1.35rem; border-top: 1px solid var(--line); }
.myth-answer p { max-width: var(--measure); margin: 0.9rem 0 0; }
.fact-word { display: block; margin-top: 1rem; }

.question-list { padding: 0; margin: 0; list-style: none; }
.question-list li, .question-board p {
  margin: 0;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  font-weight: 720;
}
.question-board { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 2rem; max-width: 58rem; }

.cost-strip { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-bottom: 1.8rem; }
.cost-strip .data-chip { margin: 0; background: rgba(94,234,212,0.08); }

.urgent-panel { border-color: rgba(255,214,176,0.58); background: rgba(255,214,176,0.1); }
.urgent-panel .section-kicker { color: var(--warning); }

.warning-list { display: grid; gap: 0.8rem; }
.warning-list article { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; padding: 1.4rem; border: 1px solid rgba(255,214,176,0.4); border-radius: 1.25rem; }
.warning-list article > span { color: var(--warning); font-size: 2.6rem; line-height: 1; }
.warning-list article p:last-child { margin-bottom: 0; }

.qa-list article { max-width: var(--measure); padding: 2rem 0; border-bottom: 1px solid var(--line); }
.qa-list article:first-of-type { padding-top: 0; }
.qa-list article:last-child { border-bottom: 0; padding-bottom: 0; }
.qa-list h2 { font-size: clamp(1.45rem, 3vw, 2.15rem); max-width: 28ch; }

.lookup-row { display: flex; gap: 2rem; align-items: center; justify-content: space-between; max-width: 58rem; padding: 1.4rem 0; }
.lookup-row > div { max-width: 37rem; }

.source-directory { display: grid; gap: 0.75rem; }
.source-directory h2, .source-directory > p { grid-column: 1 / -1; }
.source-directory > a {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  color: var(--white);
  text-decoration: none;
}
.source-directory > a::after { content: "↗"; color: var(--aqua); }
.source-directory small { display: block; color: var(--mist); font-size: 1rem; }

.next-note {
  padding: clamp(4rem, 9vw, 7rem) 0;
  display: grid;
  gap: 0.55rem;
}
.next-note > span { color: var(--aqua); font-size: 0.88rem; font-weight: 850; letter-spacing: 0.12em; text-transform: uppercase; }
.next-note a { min-height: 54px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.9rem 0; border-bottom: 1px solid var(--aqua); font-size: clamp(1.35rem, 3vw, 2.2rem); font-weight: 780; text-decoration: none; }

.site-footer {
  position: relative;
  padding: clamp(4rem, 9vw, 7rem) max(1rem, calc((100vw - var(--max)) / 2));
  background: #e7fffa;
  color: var(--ink);
  border-radius: 50% 50% 0 0 / 4rem 4rem 0 0;
}
.footer-head { margin-bottom: 2.5rem; }
.footer-head .eyebrow { color: #0d625b; }
.footer-title { max-width: 18ch; margin: 0; font-size: clamp(2rem, 5vw, 4rem); font-weight: 850; line-height: 1.05; letter-spacing: -0.045em; }
.footer-directory { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1rem; }
.footer-group h2 { margin: 0 0 0.6rem; color: #196c65; font-size: 1rem; letter-spacing: 0.08em; text-transform: uppercase; }
.footer-group a { min-height: 46px; display: flex; align-items: center; padding: 0.45rem 0; color: var(--ink); font-size: 1rem; font-weight: 720; }
.footer-line { margin: 3rem 0 0; padding-top: 1.5rem; border-top: 1px solid rgba(6,47,45,0.25); font-size: 1rem; font-weight: 700; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { padding: 3.5rem 0 0; }
  .hero-media { width: min(34rem, 100%); justify-self: end; margin-bottom: 4rem; }
  .intro-grid, .local-panel, .split-rule { grid-template-columns: 1fr; }
  .card-grid.three-up, .flow-line { grid-template-columns: 1fr; }
  .flow-line article { padding-left: 1.3rem; }
  .footer-directory { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .site-top { align-items: flex-start; }
  .site-mark { max-width: 12rem; line-height: 1.2; }
  .directory-jump { text-align: right; }
  h1 { font-size: clamp(2.55rem, 14vw, 4.25rem); }
  .hero { width: min(100% - 1.25rem, var(--max)); }
  .hero-media { padding: 0.45rem; border-radius: 42% 42% 1.3rem 1.3rem / 12% 12% 1.3rem 1.3rem; }
  .curve-section, .page-section, .next-note { width: min(100% - 1.25rem, var(--max)); }
  .curve-section { padding: 4.3rem 1.05rem 3rem; border-radius: 44% 44% 1.5rem 1.5rem / 3rem 3rem 1.5rem 1.5rem; }
  .card-grid.two-up, .question-board { grid-template-columns: 1fr; }
  .myth summary { grid-template-columns: 1fr auto; gap: 0.4rem 0.8rem; }
  .myth-word { grid-column: 1 / -1; }
  .myth summary::after { grid-column: 2; grid-row: 2; }
  .lookup-row { align-items: stretch; flex-direction: column; }
  .button-row, .button-row .button, .lookup-row .button { width: 100%; }
  .footer-directory { grid-template-columns: 1fr; }
  .site-footer { border-radius: 46% 46% 0 0 / 2.8rem 2.8rem 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}