:root {
  --paper: #FFFFFF;
  --mask: #0F2F25;
  --wash: #EDF2EE;
  --trace: #CBD8D0;
  --muted: #4E6058;
  --red: #D42A1F;
  --red-ink: #B3261E;

  --gutter: clamp(20px, 5vw, 56px);
  --display: "Bricolage Grotesque", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --body: "Instrument Sans", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: var(--paper);
  color: var(--mask);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
}
a { color: inherit; }
p { margin: 0 0 14px; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; border-radius: 3px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 var(--gutter); }

/* Header */
.site-head {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.94);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--trace);
  padding-top: env(safe-area-inset-top, 0px);
}
.head-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 32px; height: 32px;
  border: 1px solid var(--trace);
  border-radius: 8px;
  background: #fff;
  display: grid;
  place-items: center;
  flex: none;
}
.btn {
  display: inline-block;
  font: inherit;
  font-weight: 650;
  font-size: 15px;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  padding: 9px 16px;
  border-radius: 7px;
  border: 1.5px solid var(--mask);
  background: transparent;
  color: var(--mask);
}
.btn:hover { background: var(--wash); }

/* Document layout */
.doc-wrap {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: start;
  padding-top: clamp(32px, 5vw, 64px);
  padding-bottom: clamp(56px, 8vw, 96px);
}
@media (max-width: 900px) { .doc-wrap { grid-template-columns: 1fr; gap: 28px; } }

.toc { position: sticky; top: 92px; font-size: 15px; }
@media (max-width: 900px) { .toc { position: static; border-bottom: 1px solid var(--trace); padding-bottom: 18px; } }
.toc p { font-weight: 650; margin: 0 0 8px; }
.toc ol { margin: 0; padding-left: 22px; color: var(--muted); }
.toc li { margin: 4px 0; }
.toc a { text-decoration: none; }
.toc a:hover { color: var(--mask); text-decoration: underline; }

.doc { counter-reset: sec; min-width: 0; }
.doc h1 {
  font-family: var(--display);
  font-weight: 750;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}
.updated { color: var(--muted); margin-bottom: 26px; }

.summary {
  background: var(--wash);
  border-left: 4px solid var(--red);
  border-radius: 0 10px 10px 0;
  padding: 16px 20px;
  margin: 0 0 40px;
  max-width: 68ch;
}
.summary strong { display: block; margin-bottom: 6px; }
.summary ul { margin: 0; padding-left: 20px; }
.summary li { margin: 4px 0; }

.doc section { margin-bottom: 38px; scroll-margin-top: 88px; }
.doc h2 {
  counter-increment: sec;
  font-family: var(--display);
  font-weight: 700;
  font-size: 25px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 10px;
}
.doc h2::before { content: counter(sec) ". "; color: var(--red-ink); }
.doc p, .doc li { max-width: 68ch; }
.doc ul { padding-left: 22px; margin: 0 0 14px; }
.doc li { margin: 6px 0; }

/* Provider table */
table.providers { width: 100%; border-collapse: collapse; margin: 14px 0 6px; border-top: 2px solid var(--mask); }
.providers th, .providers td { text-align: left; vertical-align: top; padding: 12px 14px 12px 0; border-bottom: 1px solid var(--trace); font-size: 16px; }
.providers thead th { font-family: var(--display); font-size: 17px; font-weight: 700; }
.providers tbody th { font-weight: 650; width: 22%; }
.providers td { color: var(--muted); }
@media (max-width: 720px) {
  table.providers, .providers tbody, .providers tr, .providers th, .providers td { display: block; }
  .providers thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .providers tr { padding: 12px 0; border-bottom: 1px solid var(--trace); }
  .providers th, .providers td { border: 0; padding: 0; width: auto; }
  .providers tbody th { width: auto; }
  .providers td { padding-top: 4px; }
  .providers td::before { content: attr(data-label) ": "; font-weight: 600; color: var(--mask); }
}

/* Footer */
footer { background: var(--mask); color: #fff; padding: 44px 0 calc(44px + env(safe-area-inset-bottom, 0px)); }
.foot-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px 48px; align-items: flex-start; }
footer .brand { color: #fff; }
footer .brand-mark { border-color: transparent; }
footer p { color: #B9CBC2; font-size: 15px; margin: 10px 0 0; max-width: 40ch; }
footer a { color: #fff; }
footer .links { display: grid; gap: 6px; font-size: 15px; }
footer .copy { width: 100%; border-top: 1px solid rgba(255,255,255,.18); padding-top: 18px; color: #B9CBC2; font-size: 14px; margin: 0; max-width: none; }