:root {
  --bg: #071019;
  --bg2: #0b1724;
  --panel: #0f2030;
  --panel2: #13283a;
  --line: #25445c;
  --text: #edf7ff;
  --muted: #91a7b8;
  --cyan: #35d6ff;
  --green: #8af26a;
  --amber: #ffbf52;
  --violet: #bd7dff;
  --danger: #ff6d7a;
  --max: 1180px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(circle at 70% 0%, rgba(53, 214, 255, .08), transparent 34%), var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.55;
}
a { color: inherit; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 20; padding: 10px 14px; background: var(--cyan); color: #031018; }
.skip-link:focus { top: 12px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 16px max(20px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid rgba(145, 167, 184, .16);
  background: rgba(7, 16, 25, .88);
  backdrop-filter: blur(16px);
}
.brand { display: inline-flex; gap: 12px; align-items: center; text-decoration: none; min-width: 0; }
.brand strong { display: block; letter-spacing: .08em; }
.brand small { display: block; color: var(--muted); font-size: 12px; }
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(53, 214, 255, .16), rgba(189, 125, 255, .09));
}
.brand-mark span { position: absolute; width: 18px; height: 2px; background: var(--cyan); transform-origin: right center; }
.brand-mark span:nth-child(1) { transform: translateX(-2px) rotate(0deg); }
.brand-mark span:nth-child(2) { transform: translateX(-2px) rotate(45deg); background: var(--green); }
.brand-mark span:nth-child(3) { transform: translateX(-2px) rotate(-45deg); background: var(--violet); }
.site-nav { display: flex; justify-content: center; gap: 20px; color: var(--muted); font-size: 14px; }
.site-nav a, .footer-grid a, .inline-link { text-decoration: none; }
.site-nav a:hover, .inline-link:hover { color: var(--cyan); }
.header-cta, .button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--cyan);
  color: var(--text);
  text-decoration: none;
  font-weight: 750;
  font-size: 14px;
}
.header-cta, .button.primary { background: linear-gradient(135deg, rgba(53, 214, 255, .22), rgba(138, 242, 106, .12)); box-shadow: 0 0 24px rgba(53, 214, 255, .14); }
.button.secondary { border-color: var(--line); color: var(--muted); background: rgba(19, 40, 58, .5); }
.nav-toggle { display: none; }
main > section { max-width: var(--max); margin: 0 auto; padding: 76px 20px; }
.hero {
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(460px, 1.12fr);
  align-items: center;
  gap: 44px;
}
.eyebrow { color: var(--cyan); font: 700 12px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.02; letter-spacing: 0; }
h1 { font-size: clamp(46px, 6vw, 76px); max-width: 760px; text-transform: uppercase; }
h2 { font-size: clamp(32px, 4vw, 52px); }
h3 { font-size: 20px; }
p { color: var(--muted); }
.hero-text { font-size: 19px; max-width: 620px; color: #c5d5df; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero-visual {
  border: 1px solid rgba(53, 214, 255, .22);
  background: linear-gradient(180deg, rgba(15, 32, 48, .88), rgba(8, 20, 31, .96));
  min-height: 420px;
  display: grid;
  align-items: center;
  overflow: hidden;
}
.routing-svg { width: 100%; height: auto; min-height: 420px; }
.svg-node rect { fill: rgba(19, 40, 58, .92); stroke: var(--line); }
.svg-node.core rect { fill: rgba(53, 214, 255, .14); stroke: var(--cyan); }
.svg-node text, .svg-label { fill: var(--text); font: 700 13px ui-monospace, Consolas, monospace; }
.svg-label { fill: var(--muted); font-size: 10px; }
.svg-line { fill: none; stroke: rgba(53, 214, 255, .55); stroke-width: 1.4; }
marker path { fill: var(--cyan); }
.dot { fill: var(--green); filter: drop-shadow(0 0 7px rgba(138,242,106,.7)); offset-path: path("M180 90 C 250 90, 215 260, 285 260 C 350 260, 440 90, 510 90"); animation: route 5s linear infinite; }
.d2 { animation-delay: -1.6s; fill: var(--amber); }
.d3 { animation-delay: -3.2s; fill: var(--violet); }
@keyframes route { to { offset-distance: 100%; } }
.status-strip {
  padding-top: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
}
.status-strip span, .checklist span, .state-board span, .matrix span, .ops-board span {
  background: rgba(15, 32, 48, .82);
  border: 1px solid rgba(145, 167, 184, .14);
  padding: 14px;
  color: #cddde7;
  font: 700 12px ui-monospace, Consolas, monospace;
}
.split-section, .console-section, .contact-layout, .content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: start;
}
.warning, .note {
  border-left: 3px solid var(--amber);
  padding: 12px 14px;
  background: rgba(255, 191, 82, .07);
  color: #f3d296;
}
.event-sequence { display: grid; gap: 10px; }
.event-sequence div {
  position: relative;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  font: 800 13px ui-monospace, Consolas, monospace;
}
.event-sequence div:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 28px;
  bottom: -11px;
  width: 2px;
  height: 11px;
  background: var(--cyan);
}
.section-head { margin-bottom: 26px; }
.band {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 28px;
  margin: 14px 0;
  border: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(15,32,48,.96), rgba(11,23,36,.72));
}
.band > span { color: var(--cyan); font: 800 26px ui-monospace, Consolas, monospace; }
.band.methods > span { color: var(--violet); }
.band.ops > span { color: var(--amber); }
.band a { color: var(--green); text-decoration: none; font-weight: 800; }
.event-console, .code-panel, .mini-code, .terminal {
  background: #08131d;
  border: 1px solid rgba(53, 214, 255, .22);
  padding: 24px;
  overflow: auto;
}
.event-console code, .terminal code { display: block; padding: 12px 0; color: var(--green); font-family: ui-monospace, Consolas, monospace; border-bottom: 1px solid rgba(145,167,184,.12); }
.event-console code span { color: var(--muted); margin-right: 16px; }
.event-console small { color: var(--muted); display: block; margin-top: 12px; }
.quadrants { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; }
.quadrants > div { grid-row: span 2; padding-right: 26px; }
.quadrants article, .state-grid article, .three-col article, .branch-grid article, .event-docs article, .method-table article {
  border: 1px solid rgba(145, 167, 184, .16);
  background: rgba(15, 32, 48, .76);
  padding: 24px;
}
.quadrants span, .three-col span { color: var(--cyan); font: 800 13px ui-monospace, Consolas, monospace; }
.final-cta {
  max-width: none;
  margin: 40px 0 0;
  padding: 86px max(20px, calc((100vw - var(--max)) / 2));
  background: linear-gradient(90deg, rgba(53, 214, 255, .11), rgba(189, 125, 255, .08)), #08131d;
}
.final-cta h2 { max-width: 840px; }
.state-grid, .three-col, .branch-grid, .event-docs, .method-table { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.state-board, .matrix, .ops-board { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.lifecycle { display: grid; gap: 14px; padding: 32px; }
.lifecycle span { padding: 18px; background: var(--panel); border-left: 3px solid var(--cyan); text-transform: uppercase; font: 800 12px ui-monospace, Consolas, monospace; }
.matrix { padding: 32px; grid-template-columns: repeat(5, 1fr); align-items: stretch; }
.matrix span { writing-mode: vertical-rl; min-height: 220px; text-transform: uppercase; }
.ops-board { padding: 32px; grid-template-columns: repeat(3, 1fr); }
.terminal { display: grid; gap: 8px; }
.developer-nav, .link-panel { display: flex; gap: 12px; flex-wrap: wrap; padding-top: 0; }
.developer-nav a, .link-panel a {
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: rgba(15,32,48,.72);
  color: var(--cyan);
  text-decoration: none;
  font-weight: 800;
}
.contact-hero { padding-bottom: 20px; }
.contact-hero p { max-width: 760px; }
.contact-form { display: grid; gap: 14px; }
label { display: grid; gap: 7px; color: #d9e8f1; font-weight: 700; }
input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #08131d;
  color: var(--text);
  padding: 13px 14px;
  font: inherit;
}
textarea { resize: vertical; }
.hidden-field { position: absolute; left: -10000px; }
.form-status { min-height: 24px; }
.legal-page { max-width: 820px; }
.site-footer {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  padding: 54px max(20px, calc((100vw - var(--max)) / 2));
  border-top: 1px solid rgba(145, 167, 184, .16);
  background: #050c13;
}
.footer-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; color: var(--muted); }
.footer-brand { margin-bottom: 18px; }
@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  .nav-toggle { display: inline-flex; background: transparent; color: var(--text); border: 1px solid var(--line); min-height: 40px; padding: 0 12px; }
  .site-nav { grid-column: 1 / -1; display: none; flex-direction: column; align-items: stretch; }
  .site-nav.open { display: flex; }
  .header-cta { display: none; }
  .hero, .split-section, .console-section, .contact-layout, .content-grid, .site-footer { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 54px; }
  .hero-visual { min-height: 320px; }
  .status-strip, .state-grid, .three-col, .branch-grid, .event-docs, .method-table, .quadrants { grid-template-columns: 1fr; }
  .quadrants > div { grid-row: auto; padding-right: 0; }
  .band { grid-template-columns: 1fr; }
  .matrix { grid-template-columns: 1fr; }
  .matrix span { writing-mode: horizontal-tb; min-height: 0; }
}
@media (max-width: 560px) {
  h1 { font-size: 38px; }
  main > section { padding: 52px 16px; }
  .routing-svg { transform: scale(.86); transform-origin: center; }
  .hero-visual { min-height: 280px; }
  .actions, .developer-nav, .link-panel { flex-direction: column; }
  .button, .header-cta { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}