/* Countersign docs — shared page chrome. Builds only on tokens.css vars. */
@import url("/tokens.css");

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--cs-ink-850); color: var(--cs-text-1);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65; -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(124, 156, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 156, 255, .04) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(900px 560px at 70% -6%, #000 25%, transparent 80%);
  mask-image: radial-gradient(900px 560px at 70% -6%, #000 25%, transparent 80%);
}
.mono { font-family: var(--cs-font-mono, ui-monospace, "SF Mono", Menlo, monospace); }

header.site { position: sticky; top: 0; z-index: 10; background: rgba(7,8,11,.86); backdrop-filter: blur(9px); border-bottom: 1px solid var(--cs-line-1); }
header.site nav { max-width: 1080px; margin: 0 auto; padding: 13px 22px; display: flex; align-items: center; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--cs-text-1); text-decoration: none; font-weight: 650; letter-spacing: .02em; }
.brand svg { width: 22px; height: 22px; }
nav .spacer { flex: 1; }
.navlink { color: var(--cs-text-3); text-decoration: none; font-size: 13.5px; font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.navlink:hover { color: var(--cs-text-1); }
@media (max-width: 720px) { .navlink.opt { display: none; } }

main { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; padding: 40px 22px 70px; }
.crumb { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12px; color: var(--cs-text-4); letter-spacing: .06em; text-transform: uppercase; }
.crumb a { color: var(--cs-blue-400); text-decoration: none; }
h1 { font-size: clamp(26px, 4.6vw, 38px); line-height: 1.16; letter-spacing: -0.015em; margin: 10px 0 10px; font-weight: 700; }
.lede { color: var(--cs-text-2); font-size: 17px; margin: 0 0 26px; }
h2 { font-size: 21px; margin: 40px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 16.5px; margin: 26px 0 8px; }
p, li { color: var(--cs-text-2); font-size: 15.5px; }
strong { color: var(--cs-text-1); }
a { color: var(--cs-blue-400); }
hr { border: 0; border-top: 1px solid var(--cs-line-1); margin: 34px 0; }

pre { background: var(--cs-ink-900); border: 1px solid var(--cs-line-1); border-radius: 10px; padding: 14px 16px; overflow-x: auto; max-width: 100%; }
pre code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 13px; line-height: 1.6; color: var(--cs-text-1); }
code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: .92em; background: var(--cs-ink-750); border: 1px solid var(--cs-line-1); border-radius: 5px; padding: 1px 5px; color: var(--cs-text-1); }
pre code { background: none; border: 0; padding: 0; }
.cg { color: var(--cs-green-400); } .cr { color: var(--cs-red-400); } .ca { color: var(--cs-amber-400); } .cb { color: var(--cs-blue-400); } .cm { color: var(--cs-text-4); }

.tscroll { overflow-x: auto; max-width: 100%; margin: 18px 0; border: 1px solid var(--cs-line-1); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; min-width: 520px; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 13px; border-bottom: 1px solid var(--cs-line-1); color: var(--cs-text-2); }
th { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 11.5px; letter-spacing: .07em; text-transform: uppercase; color: var(--cs-text-4); background: var(--cs-ink-800); }
tr:last-child td { border-bottom: 0; }
td .native { color: var(--cs-green-400); font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12.5px; }
td .layer { color: var(--cs-amber-400); font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12.5px; }

.callout { border: 1px solid var(--cs-line-2); border-left: 3px solid var(--cs-amber-400); background: var(--cs-ink-800); border-radius: 8px; padding: 12px 16px; margin: 20px 0; font-size: 14.5px; color: var(--cs-text-2); }
.callout.green { border-left-color: var(--cs-green-400); }

.cta { margin: 40px 0 0; border: 1px solid var(--cs-line-2); border-radius: 12px; background: var(--cs-ink-750); padding: 22px; }
.cta h2 { margin: 0 0 6px; font-size: 18px; }
.cta p { margin: 0 0 14px; font-size: 14.5px; }
.btn { display: inline-block; padding: 10px 16px; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 14px; border: 1px solid var(--cs-line-2); color: var(--cs-text-1); margin-right: 10px; margin-bottom: 8px; }
.btn.primary { background: var(--cs-green-500); border-color: var(--cs-green-500); color: var(--cs-green-ink); }
.btn:hover { border-color: var(--cs-green-400); }

.guides { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin: 18px 0; padding: 0; list-style: none; }
.guides li { border: 1px solid var(--cs-line-1); border-radius: 10px; background: var(--cs-ink-750); min-width: 0; }
.guides a { display: block; padding: 14px 16px; text-decoration: none; }
.guides b { display: block; color: var(--cs-text-1); font-size: 14.5px; margin-bottom: 3px; }
.guides span { color: var(--cs-text-3); font-size: 12.5px; line-height: 1.45; display: block; }
.guides li:hover { border-color: var(--cs-line-2); }

footer.site { border-top: 1px solid var(--cs-line-1); margin-top: 30px; }
footer.site .wrap { max-width: 1080px; margin: 0 auto; padding: 26px 22px; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
footer.site a { color: var(--cs-text-3); text-decoration: none; font-size: 13px; }
footer.site a:hover { color: var(--cs-text-1); }
footer.site .note { flex-basis: 100%; color: var(--cs-text-4); font-size: 12.5px; margin: 4px 0 0; }