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

:root {
  --bg: #0a0b0d;
  --panel: #101216;
  --panel-2: #14171c;
  --line: #23262d;
  --line-soft: #1a1d23;
  --amber: #ffb000;
  --amber-soft: rgba(255, 176, 0, 0.12);
  --amber-line: rgba(255, 176, 0, 0.35);
  --text: #d7dae0;
  --muted: #868e99;
  --faint: #5a616b;
  --green: #8fcf6f;
  --cyan: #6cb8ff;
  --orange: #ff8a4c;
  --red: #e0563f;
  --display: 'Saira Condensed', sans-serif;
  --body: 'IBM Plex Sans', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

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

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection { background: var(--amber); color: #0a0b0d; }

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

code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--panel-2);
  border: 1px solid var(--line-soft);
  padding: 0.08em 0.38em;
  border-radius: 3px;
  color: var(--text);
}

.hazard {
  height: 8px;
  background: repeating-linear-gradient(-45deg, var(--amber) 0 12px, #0a0b0d 12px 24px);
  opacity: 0.85;
}

.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: 60px;
  background: rgba(10, 11, 13, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none !important;
}

.brand-mark {
  width: 18px; height: 18px;
  background: var(--amber);
  clip-path: polygon(0 0, 45% 0, 45% 55%, 100% 55%, 100% 100%, 0 100%);
}

.brand-name {
  font-family: var(--display);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: 0.14em;
  color: var(--text);
}

.brand-lang {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--amber);
  letter-spacing: 0.1em;
  margin-top: 3px;
}

.topnav { display: flex; gap: 26px; }

.topnav a {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.topnav a:hover { color: var(--amber); text-decoration: none; }
.topnav a.gh { color: var(--text); }

.hero {
  position: relative;
  padding: 150px 28px 0;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, black 30%, transparent 75%);
}

.voxel-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 95% 90% at 50% 35%, black 40%, transparent 80%);
}

.hero-inner {
  position: relative;
  max-width: 1060px;
  margin: 0 auto;
}

.hero-kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--amber);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.tick {
  width: 26px; height: 2px;
  background: var(--amber);
  display: inline-block;
}

.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(56px, 9vw, 116px);
  line-height: 0.92;
  letter-spacing: 0.015em;
  text-transform: uppercase;
  color: var(--text);
}

.hero h1 .accent {
  color: var(--amber);
  text-shadow: 0 0 42px rgba(255, 176, 0, 0.35);
}

.hero-sub {
  max-width: 620px;
  margin-top: 26px;
  color: var(--muted);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 13px 26px;
  border: 1px solid var(--amber-line);
  transition: all 0.18s ease;
}
.btn:hover { text-decoration: none; }

.btn-amber {
  background: var(--amber);
  color: #0a0b0d;
  border-color: var(--amber);
  box-shadow: 0 0 0 0 rgba(255, 176, 0, 0.4);
}
.btn-amber:hover { box-shadow: 0 0 28px 0 rgba(255, 176, 0, 0.35); transform: translateY(-1px); }

.btn-ghost { color: var(--text); }
.btn-ghost:hover { background: var(--amber-soft); }

.schematic {
  margin: 72px 0 0;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel) 0%, rgba(16, 18, 22, 0.4) 100%);
  padding: 38px 30px 22px;
}

.sch-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.sch-node {
  font-family: var(--display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.1em;
  border: 1px solid var(--line);
  background: var(--panel-2);
  padding: 12px 22px;
  text-align: center;
  position: relative;
  flex-shrink: 0;
}

.sch-node small {
  display: block;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--faint);
  text-transform: none;
  margin-top: 2px;
}

.sch-hot {
  border-color: var(--amber-line);
  box-shadow: inset 0 0 24px rgba(255, 176, 0, 0.07);
}
.sch-hot small { color: var(--amber); }

.sch-dlq { border-color: rgba(224, 86, 63, 0.4); }
.sch-dlq small { color: var(--red); }

.sch-pipe {
  width: 56px;
  height: 2px;
  flex-shrink: 0;
  background-image: linear-gradient(90deg, var(--amber) 0 6px, transparent 6px 12px);
  background-size: 12px 2px;
  animation: pipe-flow 0.8s linear infinite;
  opacity: 0.7;
}

@keyframes pipe-flow {
  to { background-position: 12px 0; }
}

.sch-split {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
}

.sch-small { font-size: 15px; padding: 8px 18px; }

.sch-caption {
  margin-top: 30px;
  text-align: center;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--faint);
}

.layout {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
  padding: 72px 28px 96px;
}

.sidenav {
  position: sticky;
  top: 96px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.sidenav-title {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  color: var(--faint);
  padding: 0 0 12px 18px;
}

.sidenav a {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--muted);
  padding: 7px 18px;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: all 0.15s ease;
}
.sidenav a b { color: var(--faint); font-weight: 500; margin-right: 8px; }
.sidenav a:hover { color: var(--text); text-decoration: none; }
.sidenav a.active { color: var(--amber); border-left-color: var(--amber); background: var(--amber-soft); }
.sidenav a.active b { color: var(--amber); }

.content { min-width: 0; }

.block { margin-bottom: 78px; scroll-margin-top: 96px; }

.block h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 34px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.block h2 .num {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 15px;
  color: var(--amber);
  border: 1px solid var(--amber-line);
  padding: 3px 8px;
  letter-spacing: 0.1em;
}

.block p { color: var(--muted); max-width: 680px; margin-bottom: 18px; }
.block p code, .note code { color: var(--text); }

.note {
  font-size: 14px;
  border-left: 2px solid var(--amber-line);
  padding: 8px 16px;
  background: var(--panel);
  color: var(--muted);
  max-width: 680px;
}

.codecard {
  border: 1px solid var(--line);
  background: var(--panel);
  margin: 0 0 22px;
  overflow: hidden;
}

.codecard-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--panel-2);
}

.codecard-head span {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--faint);
  text-transform: uppercase;
}

.copy {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
  background: none;
  border: 1px solid var(--line);
  padding: 3px 10px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.copy:hover { color: var(--amber); border-color: var(--amber-line); }
.copy.done { color: var(--green); border-color: var(--green); }

.tabs { display: flex; gap: 4px; }

.tab {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  background: none;
  border: 1px solid transparent;
  padding: 4px 10px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--amber); border-color: var(--amber-line); background: var(--amber-soft); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.codecard pre {
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.7;
}

.codecard pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

.lang-output { color: var(--green); }
.lang-shell { color: var(--text); }

.tok-kw { color: var(--amber); }
.tok-str { color: var(--green); }
.tok-num { color: var(--orange); }
.tok-type { color: var(--cyan); }
.tok-fn { color: var(--text); }
.tok-cm { color: var(--faint); font-style: italic; }
.tok-prompt { color: var(--faint); }

.modtable {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  font-size: 14.5px;
}

.modtable th {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-align: left;
  color: var(--amber);
  background: var(--panel-2);
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
}

.modtable td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
  vertical-align: top;
}
.modtable td:first-child { white-space: nowrap; }
.modtable tr:last-child td { border-bottom: none; }

.footer { border-top: 1px solid var(--line); }

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 34px 28px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-inner p {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--faint);
  letter-spacing: 0.04em;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero .reveal:nth-child(1) { animation-delay: 0.05s; }
.hero .reveal:nth-child(2) { animation-delay: 0.15s; }
.hero .reveal:nth-child(3) { animation-delay: 0.28s; }
.hero .reveal:nth-child(4) { animation-delay: 0.4s; }
.hero .reveal:nth-child(5) { animation-delay: 0.55s; }

@keyframes rise {
  to { opacity: 1; transform: none; }
}

.block {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.block.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .block { opacity: 1; transform: none; animation: none; transition: none; }
  .sch-pipe { animation: none; }
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; gap: 0; }
  .sidenav { display: none; }
  .topnav a:not(.gh) { display: none; }
  .hero { padding-top: 120px; }
  .sch-row { flex-direction: column; gap: 10px; }
  .sch-pipe { width: 2px; height: 28px; background-image: linear-gradient(180deg, var(--amber) 0 6px, transparent 6px 12px); background-size: 2px 12px; }
  @keyframes pipe-flow { to { background-position: 0 12px; } }
}