/* CIPHERA Encrypted Chat — public site. Tokens from docs/design/DESIGN_SYSTEM.md (dark-first night blue). */
:root{--bg:#050B18;--bg1:#0A1630;--panel:#0F2045;--raised:#142A57;--line:#1E3566;
  --ink:#EAF0FA;--dim:#9FB0CC;--faint:#6B7C99;--silver:#C9D3E3;--accent:#5B9BFF;--brand:#2F6BFF;
  --secure:#3DDC97;--attention:#F5B544}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
header{border-bottom:1px solid var(--line);background:linear-gradient(180deg,#0A1630,#050B18)}
.wrap{max-width:820px;margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:14px;padding:22px 0}
.mark{width:44px;height:44px;border-radius:11px;flex:0 0 auto;display:block;
  box-shadow:0 0 0 1px #1E3566,0 0 18px rgba(47,107,255,.25)}
.brand h1{font-size:19px;margin:0;font-weight:650;letter-spacing:-.2px;color:var(--silver)}
.brand p{margin:2px 0 0;font-size:13px;color:var(--dim)}
nav{display:flex;gap:22px;padding:0 0 16px;font-size:14px;flex-wrap:wrap}
nav a{color:var(--dim)}
nav a.on{color:var(--ink);font-weight:600}
main{padding:38px 0 72px}
h2{font-size:26px;letter-spacing:-.4px;margin:0 0 6px;color:var(--silver)}
h3{font-size:17px;margin:34px 0 8px;letter-spacing:-.2px;color:var(--ink)}
h4{font-size:12px;margin:22px 0 6px;color:var(--dim);text-transform:uppercase;letter-spacing:.12em;font-weight:650}
.lead{color:var(--dim);font-size:17px;margin:0 0 8px}
.meta{color:var(--faint);font-size:13px;margin:0 0 30px}
p,li,dd{color:#C8D4E8}
ul,ol{padding-left:20px}
li{margin:5px 0}
strong{color:var(--ink)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;color:var(--silver);
  background:var(--bg1);border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-variant-numeric:tabular-nums}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:20px 0}
.card h3{margin-top:0}
.key{display:grid;grid-template-columns:190px 1fr;gap:8px 18px;font-size:15px}
.key dt{color:var(--dim)}
.key dd{margin:0}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px;display:block;overflow-x:auto}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top;color:#C8D4E8}
th{color:var(--dim);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.06em}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:600;
  text-transform:uppercase;letter-spacing:.06em;white-space:nowrap;
  background:rgba(47,107,255,.12);color:#8FB8FF;border:1px solid rgba(91,155,255,.6)}
.pill.secure{background:rgba(61,220,151,.12);color:var(--secure);border-color:rgba(61,220,151,.6)}
.pill.attention{background:rgba(245,181,68,.12);color:var(--attention);border-color:rgba(245,181,68,.6)}
footer{border-top:1px solid var(--line);padding:26px 0 44px;color:var(--faint);font-size:13px}
footer a{color:#8FA8C8}
@media(max-width:560px){.key{grid-template-columns:1fr}.key dt{margin-top:10px}}