/* sshlab.net — shared styles for every page. Same palette as enroll.sshlab.net. */
:root {
  color-scheme: dark;
  --bg: #0c1420; --surface: #121c2a; --raised: #182536; --line: #26364a; --line-strong: #34475f;
  --text: #e4eaf1; --muted: #8e9db0; --faint: #64748a;
  --accent: #4c8dff; --accent-hover: #6aa1ff;
  --ui: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; background: var(--bg); color: var(--text);
  font: 16px/1.6 var(--ui); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* masthead */
.masthead { border-bottom: 1px solid var(--line); background: var(--surface); }
.inner { max-width: 60rem; margin: 0 auto; padding: 0 1.25rem; }
.masthead .inner { padding-top: .9rem; padding-bottom: .9rem; display: flex; align-items: center; gap: .85rem; }
.brand { display: flex; align-items: center; gap: .85rem; color: var(--text); }
.brand:hover { color: var(--text); }
.seal { width: 2.1rem; height: 2.1rem; flex: none; }
.wordmark { display: flex; align-items: baseline; gap: .7rem; min-width: 0; }
.wordmark b { font-size: 1.15rem; letter-spacing: .01em; }
.wordmark span { color: var(--muted); font-size: .9rem; padding-left: .7rem; border-left: 1px solid var(--line-strong); white-space: nowrap; }
.masthead nav { margin-left: auto; display: flex; gap: 1.25rem; font-size: .9rem; }
.masthead nav a { color: var(--muted); }
.masthead nav a:hover, .masthead nav a.on { color: var(--text); }

/* page */
main { flex: 1; width: 100%; }
.hero { padding: 3rem 0 1.5rem; }
.crumb { font-size: .85rem; margin-bottom: .6rem; display: inline-block; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 .5rem; letter-spacing: -.01em; }
.lede { color: var(--muted); font-size: 1.05rem; margin: 0; max-width: 40rem; }
section { padding: 1.5rem 0; }
h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 1rem; font-weight: 600; }

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); gap: 1rem; }
.card { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 1.1rem 1.2rem;
  color: var(--text); transition: border-color .15s, background .15s; }
a.card:hover { border-color: var(--accent); background: var(--raised); color: var(--text); }
.card b { display: block; font-size: 1.02rem; margin-bottom: .2rem; }
.card p { margin: 0 0 .7rem; color: var(--muted); font-size: .92rem; }
.card .url { font-family: var(--mono); font-size: .8rem; color: var(--accent); }
.card.feature { border-color: var(--line-strong); }

/* panel */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 1.4rem; }
.panel h3 { margin: 0 0 .3rem; font-size: 1.1rem; }
.panel > p { margin: 0 0 1.1rem; color: var(--muted); font-size: .95rem; }
.btns { display: flex; flex-wrap: wrap; gap: .7rem; }
.btn { display: inline-block; padding: .6rem 1.1rem; border-radius: 8px; font-weight: 600; font-size: .92rem;
  background: var(--accent); color: #fff; border: 1px solid var(--accent); }
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn.ghost:hover { border-color: var(--accent); color: var(--text); }

.sub { margin-top: 1.3rem; padding-top: 1.1rem; border-top: 1px solid var(--line); }
.sub h4 { margin: 0 0 .6rem; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 600; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1rem; margin: 0; font-size: .88rem; }
dt { color: var(--muted); }
dd { margin: 0; font-family: var(--mono); font-size: .8rem; word-break: break-all; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { text-align: left; padding: .45rem .6rem; border-bottom: 1px solid var(--line); }
tr:last-child td { border-bottom: 0; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; }
td a { font-family: var(--mono); font-size: .8rem; }
.guides { display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; font-size: .9rem; }
.guides span { color: var(--muted); }

footer { border-top: 1px solid var(--line); color: var(--faint); font-size: .82rem; }
footer .inner { padding-top: 1.2rem; padding-bottom: 1.2rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

@media (max-width: 600px) {
  .masthead nav { display: none; }
  h1 { font-size: 1.6rem; }
  dl { grid-template-columns: 1fr; gap: .1rem; }
  dd { margin-bottom: .5rem; }
}