:root {
  --accent: #ff5a5f;
  --accent-pressed: #e0484d;
  --accent-tint: rgba(255, 90, 95, 0.08);
  --text: #222222;
  --muted: #6a6a6a;
  --line: #b0b0b0;
  --hairline: #ebebeb;
  --canvas: #f7f7f7;
  --card: #ffffff;
  --radius: 12px;
  --radius-input: 8px;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--text);
  font-family: 'DM Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
a { color: var(--text); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--text); outline-offset: 2px; }
.wrap { width: 100%; max-width: 760px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 12px; top: 12px; background: var(--card); padding: 8px 12px; border-radius: var(--radius-input); z-index: 10; }
.muted { color: var(--muted); }

.site-header { background: var(--card); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: -0.02em; }
.brand .logo { display: block; }
.site-header nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.site-header nav a { text-decoration: none; font-weight: 500; font-size: 15px; }
.site-header nav a:hover { text-decoration: underline; }
.site-header .nav-app { background: var(--text); color: var(--card); padding: 8px 14px; border-radius: 999px; }
.site-header .nav-app:hover { text-decoration: none; background: #000; }

main { padding-top: 24px; padding-bottom: 48px; }
.crumbs ol { list-style: none; padding: 0; margin: 0 0 16px; display: flex; flex-wrap: wrap; gap: 6px; font-size: 14px; color: var(--muted); }
.crumbs li + li::before { content: '/'; margin-right: 6px; color: var(--line); }
.crumbs a { color: var(--muted); }

h1 { font-size: clamp(28px, 6vw, 40px); line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 12px; }
h2 { font-size: 22px; line-height: 1.25; font-weight: 500; letter-spacing: -0.02em; margin: 40px 0 12px; }
h3 { font-size: 18px; font-weight: 600; margin: 24px 0 8px; }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 12px; padding-left: 22px; }
li { margin-bottom: 6px; }
.lead { font-size: 18px; color: var(--text); }
.meta, .disclaimer { font-size: 14px; color: var(--muted); }
.disclaimer { margin-top: 16px; }

.card { background: var(--card); border-radius: var(--radius); padding: 20px; }
.note { background: var(--card); border-radius: var(--radius); padding: 16px; }
.alert { background: var(--accent-tint); border-radius: var(--radius); padding: 16px; margin: 0 0 12px; }
.alert-title { font-weight: 600; margin-bottom: 4px; }

.tool { margin-top: 24px; }
.tool-title { margin-top: 0; }
.field { margin: 0 0 16px; border: 0; padding: 0; min-width: 0; }
.field label, .field legend { display: block; font-weight: 500; margin-bottom: 6px; padding: 0; }
.hint { font-size: 14px; color: var(--muted); margin: -2px 0 8px; }
input[type='date'], input[type='number'] {
  font: inherit;
  font-size: 16px;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-input);
  min-height: 48px;
  padding: 0 12px;
  width: 100%;
  max-width: 320px;
}
input[type='date']:focus, input[type='number']:focus { outline: none; border: 2px solid var(--text); padding: 0 11px; }
.with-unit { display: flex; align-items: center; gap: 8px; }
.with-unit input { max-width: 120px; }
.choices { display: flex; flex-wrap: wrap; gap: 8px; }
.choice { display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; cursor: pointer; font-weight: 400; }
.choice input { accent-color: var(--accent); width: 18px; height: 18px; margin: 0; }
.choice small { display: block; color: var(--muted); font-size: 13px; line-height: 1.3; }
.choice:has(input:checked) { border: 2px solid var(--text); padding: 7px 13px; }

.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px; border: 0; border-radius: var(--radius-input);
  background: var(--accent); color: #fff; font: inherit; font-weight: 500; font-size: 16px;
  text-decoration: none; cursor: pointer;
}
.button:hover { background: var(--accent-pressed); text-decoration: none; }
.button-outline { background: transparent; color: var(--text); border: 1px solid var(--line); }
.button-outline:hover { background: var(--canvas); }
.button-plain { background: transparent; color: var(--text); padding: 0 8px; text-decoration: underline; }
.button-plain:hover { background: transparent; }
.error { color: var(--accent-pressed); font-weight: 500; }
.privacy { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; color: var(--muted); margin: 16px 0 0; }
.privacy svg { flex: none; margin-top: 3px; }

.result { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--hairline); }
.result-label { font-size: 14px; color: var(--muted); margin: 0; }
.result-main { font-size: clamp(24px, 5vw, 30px); line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; margin: 2px 0 12px; }
.result-main .accent { color: var(--accent-pressed); }
.result dl { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2px; margin: 0 0 12px; }
.result dt { font-size: 14px; color: var(--muted); margin-top: 10px; }
.result dd { margin: 0; font-weight: 500; }
.result h3 { margin-top: 20px; }
.result .cycle { padding: 12px 0; border-bottom: 1px solid var(--hairline); }
.result .cycle:last-of-type { border-bottom: 0; }
.result .actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.layette-group { margin-top: 16px; }
.layette-group ul { list-style: none; padding: 0; margin: 0; }
.layette-group li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--hairline); margin: 0; }
.layette-group li span:last-child { font-weight: 500; white-space: nowrap; }

.table-wrap { overflow-x: auto; margin: 0 0 12px; background: var(--card); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
caption { text-align: left; padding: 14px 16px 6px; font-size: 14px; color: var(--muted); }
th, td { text-align: left; padding: 10px 16px; border-bottom: 1px solid var(--hairline); vertical-align: top; }
thead th { font-weight: 600; font-size: 14px; }
tbody th { font-weight: 500; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }

.faq details { background: var(--card); border-radius: var(--radius); margin-bottom: 8px; }
.faq summary { cursor: pointer; padding: 14px 16px; font-weight: 500; list-style-position: outside; }
.faq details p { padding: 0 16px 14px; margin: 0; }

.cta { margin-top: 40px; }
.cta-title { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 6px; }
.sources ol { font-size: 14px; }
.sources li { color: var(--muted); }
.sources a { color: var(--text); }

.link-cards { list-style: none; padding: 0; margin: 0 0 12px; display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.link-cards li { margin: 0; }
.link-card { display: flex; flex-direction: column; gap: 4px; height: 100%; text-decoration: none; }
.link-card:hover { background: #fcfcfc; }
.link-card:hover .link-title { text-decoration: underline; }
.link-title { font-weight: 600; font-size: 17px; }
.link-card .muted { font-size: 14px; line-height: 1.5; }

.legal h2 { scroll-margin-top: 16px; }
.legal h3 { scroll-margin-top: 16px; }
.legal h4 { font-size: 16px; font-weight: 600; margin: 20px 0 6px; }
.legal li > ul, .legal li > ol { margin: 6px 0 0; }
.legal blockquote { margin: 0 0 12px; }
.legal blockquote p:last-child { margin-bottom: 0; }
.legal hr { border: 0; border-top: 1px solid var(--hairline); margin: 32px 0; }
.legal code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; background: var(--card); padding: 1px 5px; border-radius: 4px; }
.legal pre { background: var(--card); border-radius: var(--radius); padding: 16px; overflow-x: auto; }
.legal pre code { padding: 0; }
.toc { margin: 8px 0 8px; }
.toc details { padding: 0; }
.toc summary { cursor: pointer; padding: 14px 16px; }
.toc ul { list-style: none; margin: 0; padding: 0 16px 14px; font-size: 15px; }
.toc li { margin-bottom: 6px; }
.toc-title { font-weight: 600; margin-bottom: 8px; }
.toc .toc-title { margin: 0; }
.other-docs { margin-top: 40px; }
.other-docs ul { list-style: none; padding: 0; margin: 0; }

.site-footer { background: var(--card); padding: 32px 0 40px; font-size: 14px; }
.footer-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.footer-title { font-weight: 600; margin-bottom: 8px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 6px; }
.footer-notes { margin-top: 24px; color: var(--muted); }

@media (max-width: 520px) {
  .header-row { padding-top: 10px; padding-bottom: 10px; }
  .site-header nav { gap: 12px; }
  .lead { font-size: 17px; }
  table { font-size: 14px; }
  th, td { padding: 8px 10px; }
}
@media print {
  .site-header, .site-footer, .crumbs, form, .privacy, .cta, .faq, .sources, .result .actions, section[aria-labelledby='veja-tambem'], .toc, .other-docs { display: none !important; }
  body { background: #fff; }
  .card { padding: 0; }
}