:root {
  --bg: #05080a;
  --bg-alt: #0a0f12;
  --line: #16232a;
  --fg: #d8e6ea;
  --dim: #6f8b95;
  --green: #00ff9c;
  --amber: #ffb454;
  --red: #ff5c5c;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: "Space Grotesk", Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    repeating-linear-gradient(180deg, rgba(0, 255, 156, 0.022) 0 1px, transparent 1px 3px);
}

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; position: relative; z-index: 1; }

a { color: var(--green); text-decoration: none; border-bottom: 1px solid rgba(0, 255, 156, 0.28); }
a:hover { border-bottom-color: var(--green); }

/* ---------- top bar ---------- */

.bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 8, 10, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.bar__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  font-family: var(--mono);
  font-size: 0.82rem;
}
.bar__id { color: var(--green); }
.bar__id span { color: var(--dim); }
.bar__nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.bar__nav a { color: var(--dim); border: 0; }
.bar__nav a:hover { color: var(--green); }

/* ---------- hero ---------- */

.hero { padding: 4.5rem 0 3rem; border-bottom: 1px solid var(--line); }
.hero__tag {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--dim);
  letter-spacing: 0.04em;
  margin: 0 0 1.25rem;
}
.hero__tag b { color: var(--green); font-weight: 500; }
.hero h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 5.2vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.hero h1 em { font-style: normal; color: var(--green); }
.hero__lead { max-width: 62ch; color: var(--fg); font-size: 1.06rem; margin: 0 0 1.75rem; }

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 0 0 2.25rem;
}
.facts div { background: var(--bg-alt); padding: 0.9rem 1rem; }
.facts dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--dim);
  margin: 0 0 0.35rem;
}
.facts dd { margin: 0; font-family: var(--mono); font-size: 0.95rem; color: var(--fg); }
.facts dd b { color: var(--green); font-weight: 500; }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 0.6rem 1.05rem;
  border: 1px solid var(--green);
  color: var(--green);
  background: transparent;
  border-radius: 2px;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn:hover { background: var(--green); color: var(--bg); }
.btn--ghost { border-color: var(--line); color: var(--dim); }
.btn--ghost:hover { background: transparent; border-color: var(--dim); color: var(--fg); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ---------- sections ---------- */

section { padding: 3.25rem 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: 0; }

.tag {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--dim);
  margin: 0 0 0.9rem;
}
.tag span { color: var(--green); }
h2 {
  margin: 0 0 1.1rem;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  letter-spacing: -0.015em;
  font-weight: 600;
}
h3 { font-family: var(--mono); font-size: 0.95rem; font-weight: 500; color: var(--fg); margin: 2rem 0 0.75rem; }
p { max-width: 68ch; }
.dim { color: var(--dim); }

/* ---------- code ---------- */

pre {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-left: 2px solid var(--green);
  padding: 0.95rem 1.1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.83rem;
  line-height: 1.6;
  margin: 0 0 1.25rem;
}
code { font-family: var(--mono); font-size: 0.88em; color: var(--amber); }
pre code { color: var(--fg); font-size: 1em; }
ul { padding-left: 1.15rem; max-width: 68ch; }
li { margin-bottom: 0.4rem; }
li::marker { color: var(--green); }

/* ---------- tables ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.82rem;
  margin: 0 0 1.5rem;
}
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--dim); font-weight: 400; text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.1em; }
td.ok { color: var(--green); }
td.no { color: var(--red); }
tbody tr:hover { background: rgba(0, 255, 156, 0.035); }

/* ---------- cards / grid ---------- */

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.card {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  padding: 1.15rem 1.25rem;
}
.card h4 { margin: 0 0 0.5rem; font-family: var(--mono); font-size: 0.9rem; font-weight: 500; color: var(--green); }
.card p { margin: 0; font-size: 0.92rem; color: var(--dim); }

.panel {
  border: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 1.1rem 1.3rem;
  margin-bottom: 1.25rem;
}
.panel__bar {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.6rem;
  margin-bottom: 0.9rem;
  display: flex;
  gap: 0.45rem;
}
.panel__bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); display: inline-block; }
.panel__bar i:nth-child(1) { background: #3a4a52; }
.panel__bar i:nth-child(2) { background: #2c3a41; }
.panel__bar i:nth-child(3) { background: #222d33; }

/* ---------- file tree ---------- */

.tree {
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.75;
  white-space: pre;
  overflow-x: auto;
  color: var(--dim);
}
.tree b { color: var(--fg); font-weight: 400; }
.tree i { color: var(--green); font-style: normal; }

/* ---------- warning ---------- */

.warn {
  border: 1px solid rgba(255, 92, 92, 0.35);
  background: rgba(255, 92, 92, 0.06);
  padding: 1rem 1.2rem;
  font-size: 0.92rem;
}
.warn strong { color: var(--red); font-family: var(--mono); font-size: 0.8rem; display: block; margin-bottom: 0.35rem; letter-spacing: 0.08em; }

/* ---------- footer ---------- */

.foot { padding: 2.5rem 0 3rem; font-family: var(--mono); font-size: 0.78rem; color: var(--dim); }
.foot__inner { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; }
.foot .ok { color: var(--green); }

@media (max-width: 640px) {
  .hero { padding-top: 3rem; }
  .bar__nav { gap: 0.85rem; }
}