/* SiftingSignal — shared stylesheet for public legal + explainer pages.
   Tokens from docs/BRAND_GUIDE.md §3, §4, §6, §12. */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ───── Accessibility ───── */
.skip-to-main {
  position: absolute;
  top: -40px;
  left: 8px;
  z-index: 100;
  padding: 8px 14px;
  background: var(--ink);
  color: #FAFAFA;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  border-radius: 6px;
  text-decoration: none;
  transition: top 150ms ease-out;
}
.skip-to-main:focus { top: 8px; color: #FAFAFA; outline: 2px solid var(--signal); outline-offset: 2px; }

:root {
  --bg: #FAFAFA;
  --surface: #FFFFFF;
  --surface-2: #F4F4F5;
  --ink: #0F172A;
  --ink-2: #334155;
  --muted: #64748B;
  --border: #E4E4E7;
  --border-strong: #D4D4D8;
  --signal: #14B8A6;
  --signal-2: #0F766E;
  --signal-soft: #CCFBF1;
  --noise: #94A3B8;
  --ok: #10B981;
  --warn: #F59E0B;
  --alert: #EF4444;
  --neutral: #71717A;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --maxw: 760px;
  --maxw-wide: 1080px;
}

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body { min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--signal-2); text-decoration: none; transition: color 150ms ease-out; }
a:hover { color: var(--signal); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ───── Header ───── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .inner {
  max-width: var(--maxw-wide);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand .mark { display: inline-block; width: 22px; height: 22px; }
.brand .tld { color: var(--muted); font-weight: 400; font-size: 12px; }
.header-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
}
.header-nav a {
  color: var(--ink-2);
  font-weight: 500;
}
.header-nav a:hover { color: var(--ink); }
.header-nav .home-link {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ───── Page container ───── */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px 24px 96px;
  flex: 1;
  width: 100%;
}
main.wide { max-width: var(--maxw-wide); }

/* ───── Editorial header for each page ───── */
.page-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--signal-2);
  margin-bottom: 14px;
}
.page-title {
  font-weight: 700;
  font-size: 36px;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin-bottom: 12px;
  max-width: 22ch;
}
.page-sub {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
  margin-bottom: 14px;
  max-width: 60ch;
}
.page-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-bottom: 8px;
}
.page-meta > * + *::before {
  content: '·';
  display: inline-block;
  margin: 0 10px;
  color: var(--border-strong);
}

/* Hard rule between major sections */
.ed-rule {
  border: none;
  border-top: 1px solid var(--ink);
  margin: 56px 0 40px;
  height: 0;
}
.ed-rule--soft {
  border: none;
  border-top: 1px solid var(--border);
  margin: 36px 0 24px;
}

/* ───── Numbered section heading ───── */
.ed-section-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 16px;
}
.ed-section-head .num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 30px;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.ed-section-head .num::after {
  content: '—';
  display: inline-block;
  margin-left: 12px;
  color: var(--border-strong);
  font-weight: 400;
}
.ed-section-head .label {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* Plain section title */
h2.sec-title {
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
h3.sub-title {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.005em;
  margin-bottom: 8px;
  color: var(--ink);
}

/* ───── Editorial body prose ───── */
.prose p,
.prose ul,
.prose ol {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--ink-2);
  margin-bottom: 16px;
  max-width: 65ch;
}
.prose ul,
.prose ol {
  padding-left: 1.4em;
}
.prose ul li,
.prose ol li {
  margin-bottom: 6px;
}
.prose strong { color: var(--ink); font-weight: 600; }
.prose code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--surface-2);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--ink);
}
.prose .lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 24px;
  max-width: 60ch;
}

/* Drop cap — first paragraph */
.dropcap::first-letter {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 4.4em;
  line-height: 0.86;
  float: left;
  padding: 4px 10px 0 0;
  margin: 4px 4px 0 -2px;
  color: var(--signal-2);
  letter-spacing: -0.04em;
}

/* ───── Editor's note callout ───── */
.editor-note {
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 20px 22px 22px;
  background: var(--surface);
  position: relative;
  margin: 28px 0 24px;
  max-width: 65ch;
}
.editor-note::before {
  content: 'EDITOR\'S NOTE';
  position: absolute;
  top: -8px;
  left: 16px;
  background: var(--bg);
  padding: 0 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--ink-2);
}
.editor-note p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0;
}
.editor-note p + p { margin-top: 10px; }

/* ───── FAQ items ───── */
.faq-item {
  border-top: 1px solid var(--border);
  padding: 22px 0 16px;
}
.faq-item:first-of-type { border-top: 1px solid var(--ink); }
.faq-item:last-of-type { border-bottom: 1px solid var(--border); padding-bottom: 22px; }
.faq-item .q {
  font-weight: 600;
  font-size: 16.5px;
  color: var(--ink);
  margin-bottom: 8px;
  letter-spacing: -0.005em;
}
.faq-item .a {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 62ch;
}
.faq-item .a p + p { margin-top: 10px; }
.faq-item .a a { color: var(--signal-2); }
.faq-item .a a:hover { color: var(--signal); }

/* ───── Pull-quote ───── */
.pullquote {
  border-left: 4px solid var(--signal);
  padding: 14px 20px 14px 22px;
  margin: 28px 0;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 18px;
  line-height: 1.45;
  color: var(--ink-2);
  letter-spacing: -0.005em;
  max-width: 60ch;
}
.pullquote cite {
  display: block;
  font-style: normal;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ───── Editorial table ───── */
.ed-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 12px 0 24px;
}
.ed-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 10px 16px 10px 0;
  border-bottom: 1px solid var(--ink);
}
.ed-table td {
  padding: 13px 16px 13px 0;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.5;
  color: var(--ink-2);
}
.ed-table tr:nth-child(even) td { background: var(--surface-2); }

/* ───── Definition list ───── */
.def-list {
  display: grid;
  gap: 0;
  margin: 14px 0 28px;
  max-width: 65ch;
}
.def-list .def-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.def-list .def-item:first-child { border-top: 1px solid var(--ink); }
.def-list .def-term {
  font-weight: 600;
  font-size: 14.5px;
  color: var(--ink);
}
.def-list .def-desc {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.55;
}

/* ───── Inline cards ───── */
.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px 20px;
  margin: 20px 0;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.55;
}
.callout--warn {
  border-color: rgba(245, 158, 11, 0.4);
  background: rgba(245, 158, 11, 0.05);
}
.callout--info {
  border-color: rgba(20, 184, 166, 0.35);
  background: var(--signal-soft);
  color: var(--ink);
}

.callout strong { color: var(--ink); }

/* ───── Buttons ───── */
.btn-primary {
  display: inline-block;
  background: var(--signal);
  color: white;
  font-weight: 500;
  font-size: 14px;
  padding: 9px 18px;
  border-radius: 6px;
  transition: background 150ms ease-out;
}
.btn-primary:hover { background: var(--signal-2); color: white; }
.btn-secondary {
  display: inline-block;
  background: var(--surface);
  color: var(--ink);
  font-weight: 500;
  font-size: 14px;
  padding: 9px 18px;
  border-radius: 6px;
  border: 1px solid var(--border);
  transition: border-color 150ms ease-out;
}
.btn-secondary:hover { border-color: var(--border-strong); color: var(--ink); }

/* ───── Counsel-review marker ───── */
.counsel-flag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--warn);
  background: rgba(245, 158, 11, 0.1);
  padding: 2px 6px;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 6px;
}

/* ───── Footer ───── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 36px 24px 44px;
  margin-top: auto;
  background: var(--surface);
}
.site-footer .inner {
  max-width: var(--maxw-wide);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  font-size: 13px;
}
.footer-nav a {
  color: var(--ink-2);
  font-weight: 500;
  padding: 2px 0;
  transition: color 150ms ease-out;
}
.footer-nav a:hover { color: var(--signal-2); }
.footer-nav > * + *::before {
  content: '·';
  display: inline-block;
  margin: 0 12px;
  color: var(--border-strong);
}
.footer-mark {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-mark .brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-2);
}
.footer-mark .brand-mark .mark {
  width: 18px;
  height: 18px;
  display: inline-block;
}

/* ───── Mobile ───── */
@media (max-width: 720px) {
  main { padding: 36px 18px 64px; }
  .page-title { font-size: 28px; }
  .header-nav { gap: 12px; }
  .header-nav .header-nav-extra { display: none; }
  .ed-section-head { gap: 12px; }
  .ed-section-head .num { font-size: 24px; }
  .ed-section-head .label { font-size: 18px; }
  .footer-nav > * + *::before { margin: 0 8px; }
  .ed-table { font-size: 13px; }
  .ed-table th, .ed-table td { padding-right: 8px; }
  .dropcap::first-letter { font-size: 3.8em; padding-right: 8px; }
}
@media (max-width: 420px) {
  main { padding: 28px 14px 52px; }
  .page-title { font-size: 24px; letter-spacing: -0.015em; }
  .page-sub { font-size: 14.5px; }
  .footer-nav { gap: 4px 12px; }
  .footer-nav > * + *::before { display: none; }
}

/* ───── Accessibility ───── */
.skip-to-main {
  position: absolute; left: -9999px; top: 0;
  padding: 10px 14px;
  background: var(--ink); color: var(--bg);
  font-weight: 500; font-size: 13px;
  border-radius: 6px;
  z-index: 200;
  text-decoration: none;
}
.skip-to-main:focus { left: 8px; top: 8px; }
:focus-visible { outline: 2px solid var(--signal-2); outline-offset: 2px; border-radius: 4px; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--signal-2); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}