@layer reset, book, frame, reading, figures, reveals, small-screen, paper;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: auto; }
  body, h1, h2, h3, h4, p, figure, dl, dd { margin: 0; }
  button, summary { font: inherit; }
  [hidden] { display: none !important; }
}

@layer book {
  :root {
    --cream: #f7f3e7;
    --ink: #243b37;
    --petrol: #145f60;
    --deep-petrol: #114d4e;
    --sea-glass: #dce9e0;
    --ochre: #e7c477;
    --soft-rose: #efcfb8;
    --quiet-ink: #4f6257;
    --rule: #a6b4a5;
    font-size: 20px;
    color-scheme: light;
  }
  body {
    background: var(--cream);
    color: var(--ink);
    font-family: "Iowan Old Style", Athelas, "Hoefler Text", Baskerville, "Palatino Linotype", Palatino, Georgia, serif;
    font-size: 1rem;
    font-synthesis: none;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-wrap: break-word;
  }
  h1, h2, h3, h4 { text-wrap: pretty; font-weight: 400; }
  h1 { font-size: clamp(2.6rem, 4.7vw, 4.15rem); line-height: 1.08; letter-spacing: -.035em; }
  h2 { font-size: clamp(1.8rem, 3vw, 2.25rem); line-height: 1.18; letter-spacing: -.018em; }
  h3 { font-size: 1.3rem; line-height: 1.3; }
  h4 { font-size: 1.1rem; line-height: 1.4; font-weight: 700; }
  p { max-width: 64ch; }
  a { color: var(--deep-petrol); text-underline-offset: .2em; text-decoration-thickness: 1px; }
  a, button, summary { -webkit-tap-highlight-color: #dce9e0; }
  a { display: inline-flex; align-items: center; min-height: 44px; max-width: 100%; }
  a:hover { text-decoration-thickness: 2px; }
  a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--deep-petrol); outline-offset: 5px; }
  button { border-radius: 0; cursor: pointer; }
  ::selection { color: var(--ink); background: var(--ochre); }
  section[id], footer[id] { scroll-margin-top: 1.5rem; }
  .primer-label {
    font-size: .95rem;
    font-variant-caps: small-caps;
    letter-spacing: 0;
    line-height: 1.3;
    color: var(--petrol);
  }
  .primer-square-link {
    min-height: 52px;
    padding: .5rem 1.15rem;
    gap: 1.4rem;
    background: var(--petrol);
    color: var(--cream);
    text-decoration: none;
    justify-content: space-between;
  }
  .primer-square-link:hover { background: var(--deep-petrol); text-decoration: underline; }
  .primer-square-link:focus-visible { outline-offset: 5px; }
}

@layer frame {
  .primer-skip {
    position: fixed;
    top: .75rem;
    left: .75rem;
    z-index: 10;
    transform: translateY(-200%);
    background: var(--cream);
    border: 2px solid var(--petrol);
    padding: .4rem 1rem;
  }
  .primer-skip:focus { transform: none; }
  .primer-mast {
    max-width: 1400px;
    margin: auto;
    padding: 1.25rem clamp(1.2rem, 5vw, 4rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
  }
  .primer-wordmark { display: block; text-decoration: none; line-height: 1.4; }
  .primer-wordmark span { display: block; font-variant-caps: small-caps; font-size: .9rem; }
  .primer-directory-link { gap: .9rem; text-decoration: none; padding: .25rem 0; }
  .primer-opening {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2.9rem clamp(1.2rem, 5vw, 4rem) 4.7rem;
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(1.5rem, 4vw, 3.3rem);
  }
  .primer-welcome > .primer-label { margin-bottom: 1.15rem; }
  .primer-welcome h1 { max-width: 16ch; }
  .primer-deck { font-size: 1.2rem; line-height: 1.48; max-width: 42ch; margin-top: 1.5rem; }
  .primer-opening-note { color: var(--quiet-ink); max-width: 46ch; margin-top: 1rem; }
  .primer-welcome > a { margin-top: 1.4rem; }
  .primer-body {
    display: grid;
    grid-template-columns: 12rem minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
    max-width: 1300px;
    padding: 0 clamp(1.2rem, 5vw, 3rem);
    margin: auto;
    align-items: start;
  }
  .primer-rail { position: sticky; top: 1.25rem; border-top: 4px solid var(--petrol); padding-top: 1rem; }
  .primer-rail-intro { font-size: .9rem; line-height: 1.5; color: var(--quiet-ink); margin: .6rem 0 .9rem; }
  .primer-rail nav { display: grid; }
  .primer-rail nav a { min-height: 48px; padding-block: .35rem; font-size: .95rem; text-decoration: none; }
  .primer-rail nav a:hover { text-decoration: underline; }
  .primer-rail-end { margin-top: 1rem; padding-block: .4rem; gap: .6rem; font-size: .9rem; }
  .primer-text { min-width: 0; max-width: 43rem; }
  .primer-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem 5rem;
    margin-top: 4rem;
    padding: 3.5rem max(1.2rem, calc((100vw - 1120px) / 2));
    background: var(--deep-petrol);
    color: var(--cream);
  }
  .primer-footer .primer-label { color: var(--cream); }
  .primer-footer-heading h2 { max-width: 15ch; margin: .6rem 0 1rem; }
  .primer-footer-links { display: grid; grid-template-columns: 1fr 1fr; column-gap: 1.7rem; align-content: start; }
  .primer-footer a { color: var(--cream); min-height: 50px; padding-block: .5rem; line-height: 1.4; font-size: .95rem; }
  .primer-footer a:focus-visible { outline-color: var(--ochre); }
  .primer-footer-line { border-top: 1px solid #83a7a2; padding-top: 1.5rem; grid-column: 1 / -1; font-size: .9rem; max-width: 72ch; }
  .missing-main { min-height: 65vh; max-width: 850px; padding: 3.5rem 1.2rem; margin: auto; }
  .missing-main h1 { margin: 1rem 0 1.5rem; }
  .missing-main .primer-square-link { margin-top: 1.8rem; }
  .missing-directory { display: flex; width: fit-content; margin-top: 1rem; }
  .missing-returns { margin-top: 2rem; }
  .missing-returns h2 { font-size: 1.4rem; }
  .missing-returns ul { margin: 0; padding: 0; list-style: none; }
  .missing-footer { padding: 2rem max(1.2rem, calc((100vw - 800px) / 2)); background: var(--sea-glass); }
}

@layer reading {
  .primer-chapter { padding-top: .25rem; padding-bottom: 4.2rem; }
  .primer-chapter + .primer-chapter { padding-top: 1.8rem; border-top: 2px solid var(--rule); }
  .primer-situation { color: var(--quiet-ink); font-style: italic; margin-bottom: 1.05rem; max-width: 52ch; }
  .primer-chapter h2 { max-width: 25ch; margin-bottom: 1.5rem; }
  .primer-chapter p + p { margin-top: 1rem; }
  .primer-chapter h3 { margin: 2rem 0 .7rem; }
  .primer-attribution { font-size: .9rem; color: var(--quiet-ink); line-height: 1.65; }
  .primer-attribution a { padding-block: .2rem; }
  .primer-pause-note { margin-top: 1.8rem; padding: 1.3rem 1.6rem 1.6rem; background: var(--sea-glass); }
  .primer-pause-note h3 { margin-top: 0; }
  .primer-follow-prompts { padding-left: 1.5rem; margin-top: 2rem; border-left: 5px solid var(--ochre); }
  .primer-follow-prompts h3 { margin-top: 1.3rem; }
  .primer-lookup { margin-block: 2rem; background: #fffdf5; padding: 1.5rem 1.6rem; }
  .primer-lookup h3 { margin-top: 0; }
  .primer-lookup ol { padding: 0 0 0 1.4rem; margin: 1.2rem 0 0; list-style-type: upper-alpha; }
  .primer-lookup li { padding-left: .55rem; margin-bottom: 1.4rem; }
  .primer-lookup li:last-child { margin-bottom: 0; }
  .primer-lookup h4 { margin-bottom: .35rem; }
  .primer-lookup li a { padding-block: .35rem; gap: .7rem; }
  .primer-bill { margin: 1.7rem 0; }
  .primer-bill > div { display: grid; grid-template-columns: 8.3rem 1fr; gap: 1.2rem; padding-block: 1.05rem; border-bottom: 1px solid var(--rule); }
  .primer-bill dt { color: var(--petrol); font-size: 1.1rem; }
  .primer-bill dd { max-width: 43ch; }
  .primer-medicare { padding: .1rem 1.5rem 1.3rem; margin-top: 2rem; border-left: 5px solid var(--petrol); }
  .primer-medicare h3 { margin-top: 1rem; }
  .primer-medicare > a { margin-top: .7rem; padding-block: .4rem; gap: .6rem; }
  .primer-help-note { margin-top: 2.6rem; }
  .primer-questions { list-style: none; padding: 0; margin: 1.6rem 0; }
  .primer-questions li { padding: .85rem 0 .85rem 1.6rem; position: relative; border-bottom: 1px solid var(--rule); }
  .primer-questions li::before { content: ""; position: absolute; left: 0; top: 1.4rem; width: .6rem; height: .6rem; border: 2px solid var(--petrol); }
  .primer-closing { font-size: 1.13rem; margin-block: 1.6rem; }
  .primer-takeaway { padding-bottom: 1.5rem; }
}

@layer figures {
  .primer-care-figure { position: relative; min-height: 29rem; width: 100%; max-width: 26rem; justify-self: end; }
  .primer-disc { position: absolute; display: flex; flex-direction: column; justify-content: center; align-items: center; width: 14rem; height: 14rem; border-radius: 50%; text-align: center; }
  .primer-disc > span { font-variant-caps: small-caps; font-size: .95rem; line-height: 1.4; }
  .primer-disc p { font-size: 1.55rem; line-height: 1.17; margin-top: .55rem; }
  .primer-disc-person { background: var(--petrol); color: var(--cream); top: 0; left: 0; transform: rotate(-8deg); }
  .primer-disc-medicine { background: var(--ochre); color: var(--ink); top: 7.6rem; right: 0; transform: rotate(7deg); }
  .primer-disc-contact { background: var(--sea-glass); color: var(--ink); top: 14rem; left: .2rem; transform: rotate(-5deg); }
  .primer-care-figure figcaption { position: absolute; right: 0; bottom: -.9rem; max-width: 12ch; color: var(--quiet-ink); line-height: 1.4; font-size: .9rem; }
  .primer-wide-figure { background: var(--sea-glass); padding: 2rem clamp(1.1rem, 2vw, 1.8rem); margin: .2rem 0 4rem; }
  .primer-wide-figure figcaption { display: grid; gap: .5rem; max-width: 24ch; font-size: 1.4rem; line-height: 1.35; }
  .primer-wide-figure figcaption strong { font-weight: 400; }
  .primer-question-path { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: .6rem; margin-top: 1.8rem; }
  .primer-question-path > div { min-width: 0; }
  .primer-question-path > div > span { display: flex; width: 100%; aspect-ratio: 1; justify-content: center; align-items: center; border-radius: 50%; background: var(--cream); color: var(--petrol); font-size: 1.12rem; }
  .primer-question-path p { font-size: .9rem; line-height: 1.4; margin-top: .85rem; }
  .primer-path-arrow { color: var(--petrol); font-size: 1.4rem; align-self: start; margin-top: 2rem; }
}

@layer reveals {
  .primer-reveal-all { padding: .45rem .9rem; min-height: 48px; background: var(--cream); color: var(--deep-petrol); border: 2px solid var(--petrol); margin: 1rem 0; }
  .primer-reveal-all:hover { background: var(--sea-glass); }
  .primer-myths { margin-top: 1.3rem; }
  .primer-myth { border-top: 2px solid var(--petrol); }
  .primer-myth:last-child { border-bottom: 2px solid var(--petrol); }
  .primer-myth summary { display: grid; grid-template-columns: 3rem 1fr 1.5rem; align-items: center; gap: 1rem; min-height: 92px; padding: .9rem .2rem; cursor: pointer; line-height: 1.4; list-style: none; }
  .primer-myth summary::-webkit-details-marker { display: none; }
  .primer-myth summary:hover { background: #e9ecdf; }
  .primer-myth-mark { font-size: 1.5rem; color: var(--petrol); }
  .primer-myth[open] .primer-myth-mark { transform: rotate(45deg); }
  .primer-answer { padding: .5rem 0 1.6rem 4.2rem; }
}

@layer small-screen {
  @media (max-width: 1100px) {
    .primer-opening { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 1.4rem; }
    .primer-care-figure { min-height: 26rem; }
    .primer-disc { width: 11.7rem; height: 11.7rem; }
    .primer-disc p { font-size: 1.3rem; }
    .primer-disc-medicine { top: 7.4rem; }
    .primer-disc-contact { top: 13.6rem; }
    .primer-body { grid-template-columns: 10rem minmax(0, 1fr); gap: 2rem; }
    .primer-footer { gap: 2rem 3rem; padding-inline: 2rem; }
  }
  @media (max-width: 760px) {
    :root { font-size: 18px; }
    .primer-mast { padding-block: 1rem; align-items: flex-start; gap: .8rem; flex-wrap: wrap; }
    .primer-wordmark { font-size: 1rem; }
    .primer-directory-link { font-size: .95rem; }
    .primer-opening { grid-template-columns: 1fr; padding-top: 1.7rem; padding-bottom: 3rem; gap: 2.5rem; }
    .primer-welcome h1 { font-size: clamp(2.4rem, 7.6vw, 3.6rem); max-width: 18ch; }
    .primer-deck { font-size: 1.16rem; }
    .primer-care-figure { justify-self: center; max-width: 24rem; min-height: 24rem; }
    .primer-disc { width: 12.3rem; height: 12.3rem; }
    .primer-disc-medicine { top: 5.5rem; }
    .primer-disc-contact { top: 11.3rem; }
    .primer-care-figure figcaption { bottom: 0; max-width: 13ch; }
    .primer-body { display: block; }
    .primer-rail { position: relative; top: auto; padding-bottom: 2.7rem; }
    .primer-rail-intro { max-width: 34ch; }
    .primer-rail nav { grid-template-columns: 1fr 1fr; column-gap: 1rem; }
    .primer-rail nav a { font-size: 1rem; }
    .primer-rail-end { margin-top: .6rem; font-size: 1rem; }
    .primer-chapter { padding-bottom: 3rem; }
    .primer-chapter h2 { font-size: 1.9rem; }
    .primer-bill > div { grid-template-columns: 1fr; gap: .4rem; }
    .primer-bill dt { font-weight: 700; }
    .primer-footer { grid-template-columns: 1fr; padding: 2.7rem 1.2rem; gap: 1.3rem; }
    .primer-footer-heading h2 { max-width: none; }
    .primer-footer-links { column-gap: 1.2rem; }
    .primer-footer a { font-size: 1rem; }
    .primer-footer-line { font-size: 1rem; }
    .primer-attribution { font-size: 1rem; }
  }
  @media (max-width: 430px) {
    .primer-care-figure { min-height: 20rem; }
    .primer-disc { width: 10rem; height: 10rem; }
    .primer-disc > span { font-size: .9rem; }
    .primer-disc p { font-size: 1.2rem; }
    .primer-disc-medicine { top: 4.6rem; }
    .primer-disc-contact { top: 9.5rem; }
    .primer-care-figure figcaption { bottom: .2rem; font-size: .95rem; max-width: 11ch; }
    .primer-follow-prompts { padding-left: 1rem; }
    .primer-lookup, .primer-pause-note { padding: 1.1rem; }
    .primer-medicare { padding-left: 1rem; padding-right: 0; }
    .primer-question-path { gap: .3rem; }
    .primer-question-path > div > span { font-size: 1rem; }
    .primer-question-path p { font-size: .9rem; }
    .primer-path-arrow { font-size: 1rem; margin-top: 1.3rem; }
    .primer-myth summary { grid-template-columns: 1fr 1.2rem; gap: .5rem; }
    .primer-myth summary > .primer-label { grid-column: 1 / -1; }
    .primer-answer { padding-left: 0; }
    .primer-footer-links { grid-template-columns: 1fr; }
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  }
}

@layer paper {
  @media print {
    :root { font-size: 12pt; }
    body { color: #000; background: #fff; }
    a { color: inherit; display: inline; min-height: 0; }
    .primer-directory-link, .primer-rail, .primer-reveal-all, .primer-skip, .primer-square-link, .primer-footer-links { display: none !important; }
    .primer-mast, .primer-opening, .primer-body, .primer-footer { display: block; padding: 0; margin: 0; }
    .primer-care-figure { display: none; }
    .primer-welcome h1 { max-width: 100%; font-size: 28pt; }
    .primer-opening-note { margin-bottom: 1.5rem; }
    .primer-text { max-width: none; }
    .primer-chapter { padding-bottom: 1.5rem; }
    .primer-chapter h2 { font-size: 21pt; }
    .primer-myth summary { display: block; min-height: 0; }
    .primer-myth summary > .primer-label, .primer-myth-mark { display: none; }
    .primer-myth::details-content { display: block; content-visibility: visible; height: auto; }
    .primer-answer { padding: .5rem 0 1rem; }
    .primer-footer { background: #fff; color: #000; }
    .primer-footer .primer-label { color: #000; }
    h2, h3, h4 { break-after: avoid; }
    .primer-question-path, .primer-lookup li { break-inside: avoid; }
  }
}