/* pgpkit.com — Graphite, after the app icon. System fonts only: the site
   makes no third-party requests, same as the app. */
:root {
  --bg: #F6F7F9;
  --surface: #FFFFFF;
  --ink: #16191D;
  --ink2: #535B66;
  --line: #DADEE3;
  --accent: #0A63C9;
  --accent-ink: #FFFFFF;
  --good: #1A7F37;
  --code-bg: #121417;
  --code-ink: #D0D5DB;
  --code-dim: #7D8590;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E1013;
    --surface: #171A1F;
    --ink: #E6EAEE;
    --ink2: #9CA5B0;
    --line: #2A2F37;
    --accent: #58A6FF;
    --accent-ink: #0E1013;
    --good: #3FB950;
    --code-bg: #07080A;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
}
a { color: var(--accent); }
img { max-width: 100%; height: auto; }
code, .mono { font-family: var(--mono); font-size: 0.92em; }

.wrap { max-width: 1140px; margin: 0 auto; padding-inline: 20px; }
.prose { max-width: 680px; }

/* header / footer */
.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 20px; padding-block: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 650; font-size: 19px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.top nav { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.top nav a { color: var(--ink2); text-decoration: none; font-size: 15px; }
.top nav a:hover, .top nav a[aria-current] { color: var(--ink); }
.foot { border-top: 1px solid var(--line); margin-top: 72px; color: var(--ink2); font-size: 14px; }
.foot .wrap { display: flex; gap: 8px 22px; flex-wrap: wrap; padding-block: 28px; }
.foot a { color: var(--ink2); }
.foot .spacer { flex: 1; }

/* the app's own section label: "// recipients" */
.label { font-family: var(--mono); font-size: 14px; color: var(--ink2); letter-spacing: 0.02em; margin: 0 0 10px; }
.label::before { content: "// "; color: var(--accent); }

h1, h2, h3 { text-wrap: balance; line-height: 1.2; }
h1 { font-size: clamp(34px, 5.2vw, 50px); letter-spacing: -0.02em; margin: 0 0 16px; }
h2 { font-size: clamp(24px, 3.4vw, 32px); letter-spacing: -0.01em; margin: 0 0 14px; }
h3 { font-size: 18px; margin: 0 0 6px; }
p { margin: 0 0 14px; }
.lede { font-size: clamp(18px, 2.2vw, 21px); color: var(--ink2); max-width: 36ch; }
.muted { color: var(--ink2); }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 48px; align-items: center; padding-block: 64px 40px; }
.hero > * { min-width: 0; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 10px;
  font-weight: 600; font-size: 16px; text-decoration: none; border: 1px solid var(--line);
  color: var(--ink); background: var(--surface);
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn[aria-disabled="true"] { color: var(--ink2); cursor: default; }
.btn small { font-weight: 400; color: inherit; opacity: 0.8; }

/* armored message — the artefact this app exists to make */
.armor {
  background: var(--code-bg); color: var(--code-ink); border-radius: 12px; padding: 20px 22px;
  font: 13px/1.55 var(--mono); overflow-x: auto; white-space: pre; margin: 0;
  box-shadow: 0 20px 40px -24px rgba(0, 0, 0, 0.5);
}
.armor .dim { color: var(--code-dim); }
.armor .hl { color: #58A6FF; }

/* sections */
section.band { padding-block: 56px; border-top: 1px solid var(--line); }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 32px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 40px; }
.grid3 > *, .grid2 > * { min-width: 0; }
.feature p { color: var(--ink2); margin: 0; }

.interop { width: 100%; border-collapse: collapse; font-size: 15px; }
.interop th, .interop td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.interop th { font: 600 13px var(--mono); color: var(--ink2); letter-spacing: 0.03em; }
.interop td:first-child { font-weight: 600; white-space: nowrap; }
.interop .ok { color: var(--good); font-family: var(--mono); white-space: nowrap; }
.scroll { overflow-x: auto; }

.shots { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.shots figure { margin: 0; }
.shots img { border-radius: 18px; border: 1px solid var(--line); display: block; }
.shots figcaption { font: 13px var(--mono); color: var(--ink2); margin-top: 8px; }

.pro { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 26px 28px; }
.pro ul { margin: 0; padding-left: 20px; color: var(--ink2); }
.pro li { margin-bottom: 4px; }

/* text pages */
.page { padding-block: 48px 0; }
.page h2 { font-size: 22px; margin-top: 36px; }
.page p, .page li { color: var(--ink2); }
.page strong { color: var(--ink); }
.date { color: var(--ink2); margin-bottom: 28px; }
.note { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 8px; padding: 14px 18px; margin: 20px 0; }
.note p:last-child { margin: 0; }
.summary { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 6px 20px 6px 38px; }
.caps { font-size: 14px; }
.fpr { font: 15px/1.7 var(--mono); background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; word-break: break-all; color: var(--ink); }
pre.cmd { background: var(--code-bg); color: var(--code-ink); border-radius: 8px; padding: 14px 16px; overflow-x: auto; font: 14px/1.5 var(--mono); }
dl.faq dt { font-weight: 600; color: var(--ink); margin-top: 22px; }
dl.faq dd { margin: 6px 0 0; color: var(--ink2); }

@media (max-width: 860px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 32px; padding-block: 40px 24px; }
  .grid3 { grid-template-columns: minmax(0, 1fr); }
  .grid2 { grid-template-columns: minmax(0, 1fr); }
  .shots { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .top nav { margin-left: 0; width: 100%; gap: 14px; }
  .armor { font-size: 12px; padding: 16px; }
}