:root {
  --bg: #080b10;
  --bg-elev: #0d121a;
  --bg-card: #111823;
  --bg-code: #0a0f17;
  --border: #1e2a3a;
  --border-strong: #2d4059;
  --text: #e6edf5;
  --text-muted: #8b9bb0;
  --text-dim: #5d6e84;
  --accent: #f7a41d;
  --accent-dim: rgba(247, 164, 29, 0.14);
  --cyan: #38bdf8;
  --cyan-dim: rgba(56, 189, 248, 0.12);
  --green: #34d399;
  --green-dim: rgba(52, 211, 153, 0.12);
  --red: #f87171;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    linear-gradient(to right, rgba(30, 42, 58, 0.25) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 42, 58, 0.25) 1px, transparent 1px);
  background-size: 32px 32px;
  min-height: 100vh;
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code, pre, .mono {
  font-family: var(--font-mono);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(8, 11, 16, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.82rem;
  border-radius: 4px;
}

.brand-tag {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  background: var(--cyan-dim);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.nav-links a {
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-links .btn-nav {
  color: var(--bg);
  background: var(--accent);
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  font-weight: 600;
}

.nav-links .btn-nav:hover {
  color: var(--bg);
  filter: brightness(1.08);
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero {
  padding: 4.25rem 0 3rem;
  border-bottom: 1px solid var(--border);
}

.spec-ribbon {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  margin-bottom: 1.35rem;
}

.spec-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: start;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.15rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 1.1rem;
  font-weight: 750;
}

.hero h1 .hl {
  color: var(--accent);
}

.hero-lead {
  color: var(--text-muted);
  font-size: 1.06rem;
  max-width: 64ch;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 600;
  padding: 0.65rem 1.1rem;
  border-radius: 4px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elev);
  color: var(--text);
  cursor: pointer;
}

.btn:hover {
  text-decoration: none;
  border-color: var(--cyan);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #080b10;
}

.btn-primary:hover {
  border-color: var(--accent);
  filter: brightness(1.07);
}

.telemetry-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.metric-box {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  padding: 0.75rem 0.9rem;
  border-radius: 4px;
}

.metric-val {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.metric-lbl {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.15rem;
}

.terminal-card {
  background: var(--bg-code);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.55);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.9rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border-strong);
}

.terminal-body {
  padding: 1.05rem 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  overflow-x: auto;
  color: #d7e3f4;
}

.terminal-body .c-dim { color: var(--text-dim); }
.terminal-body .c-kw { color: var(--accent); }
.terminal-body .c-str { color: var(--green); }
.terminal-body .c-ty { color: var(--cyan); }

section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.section-id {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 0.3rem;
}

.section-title {
  font-size: 1.65rem;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.section-sub {
  color: var(--text-muted);
  font-size: 0.94rem;
  max-width: 68ch;
}

.planes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
  margin-top: 1.5rem;
}

.plane-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.plane-badge {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid rgba(56, 189, 248, 0.28);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  width: fit-content;
}

.plane-card h3 {
  font-size: 1.12rem;
  font-family: var(--font-mono);
}

.plane-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plane-list {
  list-style: none;
  margin-top: 0.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text);
}

.plane-list li::before {
  content: "▸ ";
  color: var(--accent);
}

.blueprint-svg-wrap {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem;
  overflow-x: auto;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-elev);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

th, td {
  padding: 0.78rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg-card);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

td {
  font-family: var(--font-mono);
}

tr:last-child td {
  border-bottom: none;
}

.tag-ok {
  color: var(--green);
  background: var(--green-dim);
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  font-weight: 600;
}

.tag-warn {
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
}

.tag-bad {
  color: var(--red);
  background: rgba(248, 113, 113, 0.12);
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
}

.tabs-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
}

.tab-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.45rem 0.85rem;
  background: var(--bg-elev);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: var(--accent);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.explorer-controls {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 240px;
  background: var(--bg-code);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  padding: 0.6rem 0.9rem;
  border-radius: 4px;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
}

.method-pills {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.5rem;
  max-height: 340px;
  overflow-y: auto;
  padding: 0.85rem;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.method-pill {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 0.42rem 0.65rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text);
}

.method-pill span.cat {
  font-size: 0.66rem;
  color: var(--text-dim);
}

.bench-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.15rem;
}

.bench-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem;
}

.bench-card h4 {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  margin-bottom: 0.6rem;
  color: var(--cyan);
}

.bar-row {
  margin-top: 0.65rem;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  margin-bottom: 0.25rem;
}

.bar-track {
  height: 8px;
  background: var(--bg-code);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.bar-fill {
  height: 100%;
  background: var(--accent);
}

.bar-fill.alt {
  background: var(--text-dim);
}

footer {
  padding: 2.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 960px) {
  .hero-grid,
  .planes-grid,
  .bench-grid {
    grid-template-columns: 1fr;
  }
  .telemetry-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}