/* ============================================
   TOKENS
   ============================================ */
:root {
  --bg: #0A0E17;
  --panel: #10172A;
  --panel-2: #151D33;
  --line: #232C42;
  --line-soft: #1A2136;
  --text: #E8ECF6;
  --text-dim: #8B94AC;
  --text-faint: #565F78;
  --amber: #FFB454;
  --amber-dim: #7A5A2E;
  --cyan: #56E1C9;
  --status-red: #FF6B6B;

  --mono: 'Space Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --container: 1180px;
  --radius: 3px;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--mono);
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
code { font-family: var(--mono); }

.skip-link a {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--amber);
  color: var(--bg);
  padding: 10px 16px;
  z-index: 200;
  font-family: var(--mono);
  font-size: 13px;
}
.skip-link a:focus {
  left: 12px;
  top: 12px;
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ============================================
   NAV
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-mark { color: var(--amber); }
.nav-links {
  display: flex;
  gap: 28px;
  font-size: 13.5px;
  color: var(--text-dim);
}
.nav-links a { transition: color 0.15s ease; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--amber);
  border: 1px solid var(--amber-dim);
  padding: 8px 14px;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.nav-cta:hover {
  background: rgba(255, 180, 84, 0.08);
  border-color: var(--amber);
}

@media (max-width: 760px) {
  .nav-links { display: none; }
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: 72px 28px 0;
  background:
    radial-gradient(ellipse 900px 500px at 50% -10%, rgba(255, 180, 84, 0.08), transparent 60%),
    var(--bg);
}
.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
}
.badge {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  border: 1px solid var(--line);
  padding: 5px 10px;
  border-radius: var(--radius);
}
.badge-status {
  color: var(--status-red);
  border-color: rgba(255, 107, 107, 0.35);
}

.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  line-height: 1.12;
  color: var(--text);
}
.hero-title-accent { color: var(--amber); }

.hero-sub {
  max-width: 640px;
  margin: 24px auto 0;
  color: var(--text-dim);
  font-size: 17px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 36px;
  flex-wrap: wrap;
}
.btn {
  font-family: var(--mono);
  font-size: 13.5px;
  padding: 13px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  display: inline-block;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--amber);
  color: var(--bg);
  font-weight: 700;
}
.btn-primary:hover { background: #ffc274; }
.btn-ghost {
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--text-dim); }

/* ---- Signature: pipeline strip ---- */
.pipeline-strip {
  margin: 64px auto 0;
  max-width: 760px;
  padding-bottom: 72px;
}
.stage-row {
  display: flex;
  justify-content: space-between;
  padding: 0 4px;
}
.stage-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 25%;
}
.stage-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--panel-2);
  border: 1.5px solid var(--line);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.stage-node.is-active .stage-dot {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 12px rgba(255, 180, 84, 0.7);
}
.stage-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  transition: color 0.3s ease;
}
.stage-node.is-active .stage-label { color: var(--amber); }

.stream-track {
  position: relative;
  height: 2px;
  background: var(--line-soft);
  margin: 14px 6px 0;
}
.stream-line {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--line) 15%, var(--line) 85%, transparent);
}
.packet-chip {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translate(-50%, -50%);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--bg);
  background: var(--cyan);
  padding: 4px 9px;
  border-radius: 2px;
  white-space: nowrap;
  animation: travel 4.5s linear infinite;
}
@keyframes travel {
  0%   { left: 2%; opacity: 0; }
  6%   { opacity: 1; }
  94%  { opacity: 1; }
  100% { left: 98%; opacity: 0; }
}

.readout {
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-faint);
  text-align: left;
  padding: 12px 16px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

@media (max-width: 640px) {
  .stage-label { font-size: 9px; }
  .pipeline-strip { margin-top: 48px; }
}

/* ============================================
   SECTIONS (shared)
   ============================================ */
.section { padding: 96px 28px; }
.section-alt { background: var(--panel); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.section-inner { max-width: var(--container); margin: 0 auto; }
.section-inner.narrow { max-width: 720px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin-bottom: 14px;
}
.section h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom: 20px;
}
.lede {
  color: var(--text-dim);
  font-size: 16.5px;
  line-height: 1.75;
  max-width: 640px;
}
.lede + .lede { margin-top: 16px; }

/* ============================================
   ARCHITECTURE — stage cards
   ============================================ */
.stage-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.stage-card {
  background: var(--bg);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.stage-card-head { display: flex; flex-direction: column; gap: 10px; }
.stage-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cyan);
}
.stage-card h3 {
  font-size: 16px;
  line-height: 1.35;
}
.stage-card p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.6;
  flex-grow: 1;
}
.readout-box {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-faint);
  background: var(--panel);
  border: 1px solid var(--line-soft);
  padding: 10px 12px;
  border-radius: var(--radius);
  word-break: break-word;
}
.readout-box .dim { color: var(--amber); margin-right: 4px; }

@media (max-width: 900px) {
  .stage-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .stage-grid { grid-template-columns: 1fr; }
}

/* ============================================
   TERMINAL
   ============================================ */
.terminal {
  margin-top: 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--panel);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line-soft);
}
.dot { width: 9px; height: 9px; border-radius: 50%; }
.dot-r { background: #FF6B6B; }
.dot-y { background: #FFD166; }
.dot-g { background: #56E1C9; }
.terminal-title {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-faint);
}
.terminal-body {
  margin: 0;
  padding: 20px 22px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.85;
  color: var(--text-dim);
  overflow-x: auto;
}
.terminal-body .prompt { color: var(--amber); }
.terminal-body .out { color: var(--text-faint); display: inline-block; margin-top: 6px; }

/* ============================================
   DOC LIST
   ============================================ */
.doc-list { margin-top: 36px; display: flex; flex-direction: column; gap: 1px; }
.doc-list a {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 16px 18px;
  background: var(--bg);
  border: 1px solid var(--line-soft);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.doc-list a:hover { border-color: var(--amber-dim); background: rgba(255,180,84,0.04); }
.doc-list a + a { margin-top: -1px; }
.doc-list span {
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--cyan);
  min-width: 108px;
}

/* ============================================
   CREW
   ============================================ */
.crew-list { margin-top: 36px; display: flex; flex-direction: column; }
.crew-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--mono);
  font-size: 15px;
}
.crew-item a { transition: color 0.15s ease; }
.crew-item a:hover { color: var(--amber); }
.crew-role {
  color: var(--text-faint);
  font-size: 12px;
}
.crew-mentor { border-top: 1px dashed var(--line); margin-top: 6px; padding-top: 22px; }
.crew-mentor a { color: var(--amber); }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 40px 28px;
  border-top: 1px solid var(--line-soft);
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
}
.footer-inner a:hover { color: var(--amber); }