/* Public signal pages. Color tokens live in the shared /theme.css, linked first. */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--accent); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.skip { position: absolute; left: -1000px; top: 0; z-index: 10; padding: 8px; background: var(--surface); }
.skip:focus { left: 8px; }

/* ---- chrome ---- */
.pub-top {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 14px clamp(16px, 4vw, 42px);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
  backdrop-filter: blur(14px);
}
.pub-brand { display: flex; align-items: center; gap: 12px; color: var(--fg); text-decoration: none; }
.pub-mark { width: 40px; height: 40px; flex: none; }
.pub-brand strong { display: block; font-size: 1.22rem; line-height: 1.15; letter-spacing: -.02em; }
.pub-brand span span { display: block; margin-top: 2px; color: var(--muted); font-size: .66rem; font-weight: 700; letter-spacing: .18em; }
.pub-nav { display: flex; align-items: center; gap: 8px; }
.pub-nav a { padding: 9px 13px; border-radius: 10px; font-size: .9rem; font-weight: 650; text-decoration: none; }
.pub-nav a:hover { background: var(--raised); }
.pub-mobile-menu { display: none; position: relative; }
.pub-mobile-menu > summary { display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid var(--border); border-radius: 11px; background: var(--surface); color: var(--fg); cursor: pointer; list-style: none; }
.pub-mobile-menu > summary::-webkit-details-marker { display: none; }
.pub-mobile-menu > summary svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.pub-mobile-nav { display: none; }
.pub-cta { background: var(--pill); color: var(--pill-text); }
.pub-cta:hover { background: var(--pill); box-shadow: 0 8px 24px var(--glow); }

.pub-wrap { max-width: 760px; margin: 0 auto; padding: 36px clamp(16px, 4vw, 24px) 72px; }

.pub-foot { border-top: 1px solid color-mix(in srgb, var(--border) 45%, transparent); }
.pub-foot-inner {
  max-width: 760px; margin: 0 auto; padding: 24px clamp(16px, 4vw, 24px) 40px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--muted); font-size: .86rem;
}
.pub-foot nav { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---- type ---- */
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: .74rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
h1 { margin: 0 0 16px; font-size: clamp(2rem, 5.6vw, 3.1rem); line-height: 1.06; letter-spacing: -.035em; text-wrap: balance; }
h2 { margin: 48px 0 10px; font-size: 1.4rem; line-height: 1.22; letter-spacing: -.02em; text-wrap: balance; }
.lede { max-width: 62ch; margin: 0 0 32px; color: var(--muted); font-size: 1.08rem; line-height: 1.62; }
.section-note { margin: 0 0 20px; color: var(--muted); font-size: .94rem; }
p { margin: 0 0 16px; }
.notice { padding: 16px; border-radius: 14px; background: var(--raised); color: var(--muted); }

.crumbs { margin: 0 0 22px; color: var(--muted); font-size: .86rem; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

.m-up { color: var(--up); }
.m-down { color: var(--down); }
.m-flat { color: var(--muted); }

/* ---- fact grid ---- */
.facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px;
  margin: 0 0 12px; padding: 0;
  background: color-mix(in srgb, var(--border) 45%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
  border-radius: 14px; overflow: hidden;
}
.fact { min-width: 0; padding: 16px 18px; background: var(--surface); }
.fact dt { color: var(--muted); font-size: .72rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.fact dd { margin: 6px 0 0; font-size: 1.6rem; font-weight: 750; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.fact p { margin: 6px 0 0; color: var(--muted); font-size: .8rem; line-height: 1.45; }

/* ---- evidence ---- */
.ev-list, .sig-list { margin: 0; padding: 0; list-style: none; counter-reset: ev; }
.ev { padding: 20px 0; border-bottom: 1px solid color-mix(in srgb, var(--border) 50%, transparent); }
.ev:first-child { padding-top: 4px; }
.ev-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; color: var(--muted); font-size: .82rem; }
.ev-logo { border-radius: 5px; background: var(--raised); object-fit: contain; flex: none; }
.ev-source { font-weight: 700; color: var(--fg); }
.ev-title { margin: 8px 0 6px; font-size: 1.1rem; line-height: 1.35; letter-spacing: -.012em; }
.ev-title a { color: var(--fg); text-decoration: none; }
.ev-title a:hover { color: var(--accent); text-decoration: underline; }
.ev-excerpt { margin: 0; color: var(--muted); font-size: .94rem; line-height: 1.55; }

/* ---- signal index ---- */
.sig { border-bottom: 1px solid color-mix(in srgb, var(--border) 50%, transparent); }
.sig-link {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 16px 8px; margin: 0 -8px; border-radius: 10px; text-decoration: none; color: var(--fg);
}
.sig-link:hover { background: color-mix(in srgb, var(--raised) 55%, transparent); }
.sig-link:hover .sig-name { color: var(--accent); }
.sig-name { font-size: 1.22rem; font-weight: 700; letter-spacing: -.02em; min-width: 0; }
.sig-stats { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: .86rem; font-variant-numeric: tabular-nums; }
.sig-stats > span:first-child { font-weight: 800; }

/* ---- method + cta ---- */
.method p { max-width: 64ch; color: var(--muted); }

/* ---- how it works ---- */
.how-steps { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.how-step { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 16px; padding: 28px 0; border-top: 1px solid color-mix(in srgb, var(--border) 50%, transparent); }
.how-step > span { padding-top: 5px; color: var(--accent); font-size: .74rem; font-weight: 800; letter-spacing: .12em; }
.how-step h2 { margin: 0 0 8px; font-size: 1.24rem; }
.how-step p { max-width: 62ch; margin: 0; color: var(--muted); }
.how-points { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.how-points li { position: relative; padding-left: 24px; color: var(--muted); }
.how-points li::before { content: ""; position: absolute; top: .6em; left: 0; width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--glow); }
.how-points strong { color: var(--fg); }
.how-visual { margin: 36px 0 42px; overflow: hidden; border: 1px solid color-mix(in srgb, var(--border) 60%, transparent); border-radius: 18px; background: var(--surface); }
.how-visual img { display: block; width: 100%; height: auto; }
.how-visual figcaption { padding: 13px 16px 15px; border-top: 1px solid color-mix(in srgb, var(--border) 45%, transparent); color: var(--muted); font-size: .9rem; line-height: 1.5; }
.how-flow-visual { box-shadow: 0 18px 50px color-mix(in srgb, #000 18%, transparent); }
.how-screen-visual { max-height: 600px; }
.how-screen-visual img { object-position: top; }
.cta {
  margin: 56px 0 0; padding: 26px;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 18px;
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
}
.cta h2 { margin: 0 0 8px; font-size: 1.25rem; }
.cta p { margin: 0 0 18px; color: var(--muted); }
.button {
  display: inline-block; padding: 12px 20px; border-radius: 11px;
  background: var(--pill); color: var(--pill-text);
  font-weight: 750; text-decoration: none;
}
.button:hover { box-shadow: 0 8px 24px var(--glow); }

@media (max-width: 600px) {
  .pub-top { padding: 10px 14px; gap: 12px; min-height: 64px; }
  .pub-brand { gap: 9px; min-width: 0; }
  .pub-mark { width: 36px; height: 36px; }
  .pub-brand strong { font-size: 1.08rem; }
  .pub-brand span span { display: none; }
  .pub-nav { display: none; }
  .pub-mobile-menu { display: block; margin-left: auto; }
  .pub-mobile-menu > summary { width: 44px; height: 44px; }
  .pub-mobile-menu[open] .pub-mobile-nav {
    position: absolute; top: calc(100% + 10px); right: 0; z-index: 30;
    display: grid; gap: 2px; width: min(88vw, 320px); padding: 8px;
    border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
    border-radius: 14px; background: var(--surface);
    box-shadow: 0 18px 44px color-mix(in srgb, #000 42%, transparent);
  }
  .pub-mobile-nav a { display: flex; align-items: center; min-height: 44px; padding: 10px 12px; border-radius: 9px; color: var(--fg); font-size: .92rem; font-weight: 650; text-decoration: none; }
  .pub-mobile-nav a:hover { background: var(--raised); }
  .pub-mobile-nav .pub-cta { margin-top: 4px; background: var(--pill); color: var(--pill-text); }
  .pub-mobile-nav .pub-cta:hover { box-shadow: 0 8px 24px var(--glow); }
  .pub-wrap { padding-top: 26px; }
  .how-step { grid-template-columns: 36px minmax(0, 1fr); gap: 10px; padding: 23px 0; }
  .how-visual { margin: 28px 0 34px; }
  h2 { margin-top: 38px; }
  .fact dd { font-size: 1.4rem; }
  .sig-link { padding: 14px 8px; }
  .sig-name { font-size: 1.08rem; }
}
@media (max-width: 360px) {
  .pub-top { padding-inline: 10px; }
  .pub-brand strong { font-size: 1rem; }
}