:root {
  --teal: #15565c;
  --teal-dark: #0d3e43;
  --sage: #a7c1b0;
  --sage-light: #dce8df;
  --paper: #fafcf9;
  --warm: #f1f5ef;
  --ink: #303938;
  --muted: #61706e;
  --line: #92aea1;
  --focus: #f2a93b;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 0 31px, rgba(21,86,92,.055) 32px, transparent 33px) 0 0/64px 64px,
    var(--paper);
  font-family: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  line-height: 1.68;
}
a { color: var(--teal-dark); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: .16em; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}
.skip-link { position: fixed; top: 8px; left: 8px; transform: translateY(-150%); z-index: 20; background: #fff; padding: .7rem 1rem; border: 2px solid var(--teal); }
.skip-link:focus { transform: none; }
.site-header { background: rgba(250,252,249,.98); border-bottom: 1px solid var(--line); position: relative; z-index: 5; }
.header-inner { max-width: var(--max); min-height: 86px; margin: auto; padding: 12px 24px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; color: var(--ink); text-decoration: none; font-family: Georgia, "Times New Roman", serif; line-height: 1.05; }
.brand b { color: var(--teal); font-weight: 600; }
.brand-mark { width: 38px; height: 38px; border: 2px solid var(--teal); border-radius: 50%; display: grid; place-content: center; position: relative; }
.brand-mark i { display: block; width: 3px; height: 3px; margin: 2px; border-radius: 50%; background: var(--teal); box-shadow: 7px 0 var(--sage), -7px 0 var(--sage); }
nav { display: flex; gap: 18px; align-items: center; }
nav a { color: var(--ink); text-decoration: none; font-size: .92rem; font-weight: 700; }
.header-call, .call-lozenge { border: 2px solid var(--teal); border-radius: 999px; text-decoration: none; font-weight: 800; padding: .7rem 1rem; background: #fff; color: var(--teal-dark); }
.header-call span { color: var(--muted); font-weight: 600; }
.menu-button { display: none; min-width: 48px; min-height: 44px; border: 2px solid var(--teal); background: #fff; color: var(--teal-dark); font: inherit; font-weight: 800; }
.evidence-legend { background: var(--teal-dark); color: #fff; display: flex; justify-content: center; gap: clamp(30px,8vw,110px); padding: 7px 20px; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.evidence-legend b { color: var(--sage); margin-right: 6px; }
main { max-width: var(--max); margin: auto; padding: 0 24px 100px; }
.page-hero { display: grid; grid-template-columns: minmax(0,1.7fr) minmax(260px,.7fr); gap: clamp(30px,6vw,80px); align-items: end; padding: clamp(56px,9vw,112px) 0 48px; border-bottom: 1px solid var(--line); }
.eyebrow, .section-tag { color: var(--teal); text-transform: uppercase; letter-spacing: .14em; font-size: .76rem; font-weight: 800; }
.eyebrow span { color: var(--muted); margin-left: 12px; }
h1, h2, h3 { font-family: Spectral, Georgia, "Times New Roman", serif; line-height: 1.08; color: var(--teal-dark); }
h1 { font-size: clamp(2.65rem,7vw,6.2rem); font-weight: 500; letter-spacing: -.04em; margin: .2em 0 .25em; max-width: 14ch; }
h2 { font-size: clamp(1.9rem,4vw,3.2rem); font-weight: 500; margin: .2em 0 .55em; max-width: 20ch; }
h3 { font-size: 1.35rem; }
.hero-deck { max-width: 730px; font-size: clamp(1.08rem,2vw,1.28rem); }
.hero-note { border: 2px solid var(--teal); border-radius: 6px; padding: 22px; background: #fff; position: relative; }
.hero-note:before, .answer-card:before, .content-section:before { content: ""; position: absolute; left: 12px; right: 12px; top: -6px; height: 10px; background: repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 14px); }
.hero-note span { display: block; color: var(--muted); text-transform: uppercase; letter-spacing: .12em; font-size: .7rem; }
.hero-note strong { display: block; font-family: Georgia, serif; font-size: 1.4rem; line-height: 1.15; margin: .6rem 0; color: var(--teal-dark); }
.hero-note ul { margin: 1rem 0 0; padding-left: 1.1rem; font-size: .9rem; }
.hero-note li + li { margin-top: .6rem; }
.brief-grid { display: grid; grid-template-columns: 120px 1fr; gap: 28px; padding: 56px 0; }
.specimen { min-height: 300px; border: 1px solid var(--line); background: var(--warm); display: flex; align-items: center; flex-direction: column; padding: 18px; gap: 24px; color: var(--teal); letter-spacing: .18em; font-size: .7rem; }
.specimen i { width: 44px; height: 44px; border: 1px solid var(--teal); border-radius: 50%; position: relative; }
.specimen i:after { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--sage); position: absolute; left: 10px; top: 13px; box-shadow: 14px 9px var(--teal), 7px 19px var(--sage); }
.specimen b { margin-top: auto; border-top: 1px solid var(--line); padding-top: 10px; }
.answer-card, .content-section { position: relative; border: 1px solid var(--line); background: rgba(255,255,255,.88); border-radius: 6px; padding: clamp(28px,5vw,58px); margin-bottom: 28px; }
.answer-card p, .content-section > p { max-width: 800px; }
.safety-note { border-left: 5px solid var(--sage); background: var(--warm); padding: 16px 20px; }
.observation-list { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; counter-reset: obs; }
.observation-list li { counter-increment: obs; padding: 18px 18px 18px 50px; background: var(--warm); border-bottom: 2px solid var(--sage); position: relative; }
.observation-list li:before { content: counter(obs,decimal-leading-zero); position: absolute; left: 16px; top: 17px; color: var(--teal); font-weight: 800; font-size: .75rem; }
.observation-list strong, .observation-list span { display: block; }
.observation-list strong { line-height: 1.3; color: var(--teal-dark); }
.observation-list span { margin-top: .7rem; color: var(--muted); font-size: .9rem; }
.process ol { list-style: none; padding: 0; }
.process li { display: grid; grid-template-columns: 58px 1fr; gap: 18px; align-items: start; padding: 18px 0; border-top: 1px solid var(--line); }
.step-no { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--teal); border-radius: 50%; color: var(--teal); font-weight: 800; }
.question-stack details { border-top: 1px solid var(--line); padding: 12px 0; }
.question-stack summary { cursor: pointer; font-weight: 800; min-height: 44px; padding: 8px 34px 8px 0; color: var(--teal-dark); }
.question-stack p { margin-left: 28px; max-width: 760px; }
.question-answer { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.question-answer span { display: block; background: var(--warm); padding: 14px; }
.question-answer b { display: block; color: var(--teal); text-transform: uppercase; letter-spacing: .1em; font-size: .7rem; margin-bottom: .35rem; }
.evidence-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; align-items: start; padding: clamp(30px,6vw,70px); margin: 60px 0 28px; background: var(--teal-dark); color: #fff; border-radius: 6px; }
.evidence-section h2, .evidence-section .section-tag { color: #fff; }
.source-list { margin: 0; padding: 0; list-style: none; }
.source-list li { padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.25); display: flex; flex-direction: column; }
.source-list a { color: #fff; font-weight: 800; }
.source-list span { color: var(--sage); font-size: .8rem; }
.related { padding: 50px 0; }
.related-grid, .card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.related-card { min-height: 140px; border: 1px solid var(--line); padding: 22px; text-decoration: none; background: #fff; display: flex; flex-direction: column; justify-content: space-between; }
.related-card span { color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; }
.related-card strong { font-family: Georgia, serif; font-size: 1.25rem; line-height: 1.15; }
.card-grid article { border: 1px solid var(--line); background: var(--warm); padding: 22px; }
.two-column { columns: 2 320px; column-gap: 48px; }
.evidence-map { width: 100%; height: auto; border: 1px solid var(--line); margin-top: 26px; background: #fff; }
.call-panel { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 32px; margin: 70px 0 20px; padding: clamp(28px,5vw,54px); border: 2px solid var(--teal); border-radius: 6px; background: var(--sage-light); }
.call-panel h2 { margin-bottom: .25em; }
.call-lozenge { min-width: 250px; text-align: center; padding: 15px 24px; }
.call-lozenge span, .call-lozenge strong { display: block; }
.call-lozenge span { font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; }
.call-lozenge strong { font-size: 1.3rem; }
.site-footer { background: var(--ink); color: #fff; padding: 54px max(24px,calc((100vw - var(--max))/2 + 24px)) 90px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 38px; }
.footer-grid strong { display: block; font-family: Georgia, serif; font-size: 1.15rem; margin-bottom: 12px; }
.footer-grid a { display: block; color: #fff; padding: 4px 0; }
.footer-note { color: var(--sage); border-top: 1px solid #5d6967; padding-top: 20px; margin-top: 35px; font-size: .86rem; }
.mobile-call { display: none; }
@media (max-width: 900px) {
  .menu-button { display: block; }
  nav { display: none; position: absolute; left: 24px; right: 24px; top: 78px; padding: 18px; background: #fff; border: 2px solid var(--teal); flex-direction: column; align-items: stretch; }
  nav[data-open="true"] { display: flex; }
  nav a { min-height: 44px; display: flex; align-items: center; }
  .header-call { display: none; }
  .page-hero, .evidence-section { grid-template-columns: 1fr; }
  .related-grid, .card-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  main { padding-left: 16px; padding-right: 16px; padding-bottom: 70px; }
  .header-inner { padding-left: 16px; padding-right: 16px; }
  .brand { font-size: .9rem; }
  .evidence-legend { gap: 16px; justify-content: space-between; }
  .evidence-legend span { letter-spacing: .05em; }
  .brief-grid { grid-template-columns: 1fr; }
  .specimen { min-height: 74px; flex-direction: row; }
  .specimen b { margin: 0 0 0 auto; border: 0; padding: 0; }
  .specimen i { width: 28px; height: 28px; }
  .observation-list, .related-grid, .card-grid, .footer-grid, .call-panel { grid-template-columns: 1fr; }
  .question-answer { grid-template-columns: 1fr; }
  .call-lozenge { min-width: 0; }
  .mobile-call { display: block; position: fixed; z-index: 8; left: 12px; right: 12px; bottom: 10px; text-align: center; border: 2px solid #fff; border-radius: 999px; padding: 12px; background: var(--teal-dark); color: #fff; font-weight: 900; text-decoration: none; box-shadow: 0 2px 16px rgba(0,0,0,.25); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *:before, *:after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}