:root {
  --bg: #0a0f0d;
  --panel: #10161a;
  --paper: #e8f0ee;
  --ink: #e8f0ee;
  --ink-soft: #a7b8b4;
  --ink-muted: #6e807c;
  --green: #4ade80;
  --green-dim: #2fbf63;
  --violet: #a78bfa;
  --line: #22302e;
  --line-soft: #1a2524;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, Menlo, monospace;
  --sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); text-decoration: none; }
a:hover { color: var(--violet); text-decoration: underline; }

/* Header */
.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 15, 13, .92);
}
.brand {
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: .26em;
  color: var(--paper);
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}
.brand:hover { text-decoration: none; color: var(--paper); }
.brand-wave { display: inline-flex; align-items: center; gap: 2px; height: 1em; }
.brand-wave i { display: block; width: 2px; background: var(--green); }
.brand-wave i:nth-child(1) { height: 40%; }
.brand-wave i:nth-child(2) { height: 90%; }
.brand-wave i:nth-child(3) { height: 55%; }
.brand-wave i:nth-child(4) { height: 100%; }
.brand-wave i:nth-child(5) { height: 65%; }
.brand-wave i:nth-child(6) { height: 45%; }

.site-nav { display: flex; gap: 1.25rem; }
.site-nav a { color: var(--ink-soft); font-size: .95rem; }
.site-nav a:hover { color: var(--green); text-decoration: none; }

main { max-width: 1120px; margin: 0 auto; padding: 2rem 1.5rem 4rem; }

/* Hero */
.hero { padding: 3rem 0 2rem; border-bottom: 1px solid var(--line); }
.eyebrow {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--green);
  margin: 0 0 1rem;
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.1; margin: 0 0 1rem; font-weight: 800; }
.hero h1 em { font-style: italic; color: var(--green); }
.lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 660px; margin: 0 0 1.5rem; }

.wave { display: flex; align-items: center; gap: 3px; height: 3rem; margin: 0 0 1.5rem; }
.wave .bar { display: block; width: 5px; background: linear-gradient(180deg, var(--green), var(--green-dim)); }

.jump { display: flex; flex-wrap: wrap; gap: .6rem; }
.jump a {
  font-family: var(--mono);
  font-size: .8rem;
  padding: .45rem .8rem;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-soft);
}
.jump a:hover { border-color: var(--green); color: var(--green); text-decoration: none; }

/* Category sections */
.cats { display: flex; flex-direction: column; gap: 3rem; margin-top: 3rem; }
.cat h2 {
  font-family: var(--mono);
  font-size: 1.3rem;
  letter-spacing: .06em;
  margin: 0 0 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
}
.cat-no { color: var(--green); margin-right: .4rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }

/* Patch-panel cards */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1.25rem;
  position: relative;
}
.card:hover { border-color: var(--green); }
.card-top { display: flex; gap: .4rem; flex-wrap: wrap; }
.card h3 { margin: .6rem 0 .4rem; font-size: 1.08rem; line-height: 1.3; }
.card h3 a { color: var(--paper); }
.card h3 a:hover { color: var(--green); text-decoration: none; }
.card-meta { margin: 0 0 .5rem; font-size: .82rem; color: var(--ink-muted); font-family: var(--mono); }
.card-desc { margin: 0; font-size: .92rem; color: var(--ink-soft); }

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--green);
  border: 1px solid rgba(74, 222, 128, .4);
  padding: .16rem .48rem;
}
.badge--alt { color: var(--ink-muted); border-color: var(--line); }

/* Guide / page */
.guide, .page { max-width: 800px; margin: 0 auto; }
.guide-head { border-bottom: 1px solid var(--line); padding-bottom: 1.5rem; margin-bottom: 2rem; }
.guide-head h1, .page-head h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.15; margin: .75rem 0 1rem; }
.page-head h1 { margin-top: 0; }
.guide-meta { display: flex; gap: .6rem; flex-wrap: wrap; }

.setup {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--green);
  padding: 1.25rem 1.5rem;
  margin: 0 0 2rem;
}
.setup h2 {
  margin: 0 0 1rem;
  font-size: .9rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--green);
}
.setup dl { margin: 0; }
.setup dl > div { display: flex; gap: 1rem; padding: .4rem 0; border-bottom: 1px solid var(--line-soft); }
.setup dl > div:last-child { border-bottom: 0; }
.setup dt { flex: 0 0 150px; color: var(--ink-muted); font-size: .9rem; font-family: var(--mono); }
.setup dd { margin: 0; font-weight: 600; }

.prose { max-width: 720px; }
.prose h2 {
  font-size: 1.4rem;
  margin: 2.5rem 0 .8rem;
  color: var(--paper);
  border-left: 3px solid var(--green);
  padding-left: .8rem;
}
.prose p { margin: 0 0 1.1rem; font-size: 1.02rem; color: var(--ink-soft); font-family: var(--serif); }
.prose a { text-decoration: underline; }
.prose--narrow { max-width: 720px; }
.prose--narrow h2 { font-size: 1.2rem; }

.related { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.related h2 {
  font-size: .9rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--green);
  margin: 0 0 1rem;
}
.related ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .6rem; }
.related a {
  font-size: .9rem;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: .4rem .7rem;
  color: var(--ink-soft);
}
.related a:hover { border-color: var(--green); color: var(--green); text-decoration: none; }
.related .muted {
  font-size: .9rem;
  color: var(--ink-muted);
  border: 1px solid var(--line);
  padding: .4rem .7rem;
}

/* Footer */
.site-foot {
  border-top: 1px solid var(--line);
  background: var(--panel);
  padding: 2.5rem 1.5rem 3rem;
  text-align: center;
  margin-top: 3rem;
}
.site-foot nav { display: flex; justify-content: center; gap: 1.25rem; margin: .75rem 0; flex-wrap: wrap; }
.site-foot nav a { color: var(--ink-soft); font-size: .9rem; }
.site-foot .foot-tag { color: var(--ink-soft); margin: 0; }
.site-foot .fine { color: var(--ink-muted); font-size: .82rem; margin: .5rem 0 0; }

@media (max-width: 640px) {
  .site-head { flex-direction: column; align-items: flex-start; gap: .5rem; }
  .grid { grid-template-columns: 1fr; }
  .setup dl > div { flex-direction: column; gap: .2rem; }
  .setup dt { flex: none; }
}