:root {
  --bg: #071018;
  --bg-soft: #0d1823;
  --panel: rgba(10, 20, 31, 0.86);
  --panel-strong: rgba(7, 15, 24, 0.94);
  --line: rgba(135, 208, 255, 0.18);
  --line-strong: rgba(135, 208, 255, 0.42);
  --text: #eff4fb;
  --muted: #b4c2d2;
  --accent: #82dafb;
  --accent-strong: #c6f5ff;
  --gold: #dcc38e;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Instrument Sans", sans-serif;
  line-height: 1.6;
  background:
    radial-gradient(circle at top left, rgba(130, 218, 251, 0.12), transparent 28%),
    radial-gradient(circle at 85% 12%, rgba(220, 195, 142, 0.08), transparent 20%),
    linear-gradient(180deg, #040b11 0%, var(--bg) 36%, #0c1924 100%);
}

a { color: inherit; }
p, ul { margin: 0; }

code,
pre,
.serial,
.status-live,
.section-kicker,
.small-code,
.card-index,
.command-row span,
.topbar,
.signal-strip dt,
.signal-strip dd {
  font-family: "IBM Plex Mono", monospace;
}

.atmosphere,
.radar-grid,
.noise,
.beam {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.radar-grid {
  background-image:
    linear-gradient(rgba(130, 218, 251, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130, 218, 251, 0.08) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 88%);
  opacity: 0.25;
}

.noise {
  opacity: 0.16;
  background-image: radial-gradient(rgba(255, 255, 255, 0.5) 0.4px, transparent 0.6px);
  background-size: 10px 10px;
  mix-blend-mode: soft-light;
}

.beam {
  filter: blur(60px);
  opacity: 0.18;
}

.beam-a {
  background: radial-gradient(circle, rgba(130, 218, 251, 0.42), transparent 62%);
  transform: translate(-22%, -18%);
}

.beam-b {
  background: radial-gradient(circle, rgba(220, 195, 142, 0.22), transparent 58%);
  transform: translate(56%, 34%);
}

.shell {
  position: relative;
  width: min(1220px, calc(100% - 36px));
  margin: 0 auto;
}

.masthead {
  padding: 26px 0 32px;
}

.topbar,
.crumbs,
.edition-mark,
.meta-row,
.panel-head,
.cta-row,
.signal-strip,
.hero-grid,
.two-col,
.compare-grid,
.card-grid,
.rune-layout,
.operator-grid,
.operator-list {
  display: grid;
  gap: 16px;
}

.topbar {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  margin-bottom: 24px;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
}

.crumbs,
.edition-mark,
.meta-row,
.panel-head,
.cta-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.edition-mark {
  justify-content: flex-end;
}

.topbar strong,
.status-live,
.signal-strip dd,
.button.primary {
  color: var(--accent-strong);
}

.topbar,
.topbar a,
.section-kicker,
.serial,
.small-code {
  text-shadow: 0 0 12px rgba(130, 218, 251, 0.08);
}

.hero-grid {
  grid-template-columns: minmax(0, 1.34fr) minmax(320px, 0.86fr);
  align-items: start;
}

.stack-rail {
  display: grid;
  gap: 18px;
}

.frame {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.frame::before,
.frame::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.frame::before {
  inset: 0;
  background: linear-gradient(140deg, rgba(130, 218, 251, 0.08), transparent 36%, rgba(220, 195, 142, 0.04));
}

.frame::after {
  inset: 12px;
  border: 1px solid rgba(130, 218, 251, 0.08);
}

.frame-heavy { background: linear-gradient(180deg, rgba(10, 18, 27, 0.96), rgba(8, 15, 24, 0.92)); }
.inset-panel { background: linear-gradient(180deg, rgba(7, 14, 22, 0.92), rgba(10, 19, 28, 0.86)); }
.panel,
.hero-copy,
.compare-card,
.capability-card,
.rune-shell,
.operator-panel,
.notes-panel,
.closing-call { padding: 24px; }

.hero-copy {
  padding: 28px;
}

.hero-copy,
.panel,
.section-heading,
.capability-card,
.command-stack,
.repo-contract,
.operator-list div,
.notes-list li { position: relative; z-index: 1; }

.eyebrow,
.section-kicker,
.serial,
.small-code {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.eyebrow,
.section-kicker { color: var(--accent); }
.serial,
.small-code { color: #c0cfdf; font-size: 0.76rem; }
.status-live {
  border: 1px solid rgba(130, 218, 251, 0.26);
  padding: 6px 10px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Newsreader", serif;
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 700;
}

h1 {
  max-width: 12ch;
  font-size: clamp(3.1rem, 7.2vw, 5.8rem);
  margin-top: 10px;
}

h2 {
  max-width: 12ch;
  font-size: clamp(2rem, 4.8vw, 3.8rem);
}

h3 {
  font-size: 1.55rem;
}

.lede,
.body-copy p,
.panel p,
.compare-card li,
.capability-card p,
.command-row p,
.contract-note,
.operator-list p,
.notes-panel p,
.closing-call p,
.topbar a {
  color: var(--muted);
}

.lede {
  max-width: 66ch;
  margin-top: 18px;
  font-size: 1.06rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.button:hover,
.button:focus-visible {
  outline: none;
  transform: translateY(-1px);
  border-color: var(--accent-strong);
}

.button.primary {
  background: linear-gradient(90deg, rgba(130, 218, 251, 0.18), rgba(198, 245, 255, 0.08));
}

.button.secondary {
  background: rgba(130, 218, 251, 0.05);
}

.signal-strip {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 24px;
}

.signal-strip div {
  padding: 12px;
  border: 1px solid rgba(130, 218, 251, 0.14);
  background: rgba(8, 16, 26, 0.6);
}

.signal-strip dt {
  color: var(--accent);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.signal-strip dd {
  margin: 7px 0 0;
  font-size: 0.96rem;
  color: var(--text);
}

.blueprint {
  position: relative;
  min-height: 320px;
  margin-top: 12px;
  border: 1px solid rgba(130, 218, 251, 0.14);
  background:
    radial-gradient(circle at center, rgba(130, 218, 251, 0.12), transparent 46%),
    linear-gradient(rgba(130, 218, 251, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130, 218, 251, 0.05) 1px, transparent 1px),
    rgba(7, 15, 24, 0.74);
  background-size: auto, 36px 36px, 36px 36px, auto;
}

.blueprint::before,
.blueprint::after {
  content: "";
  position: absolute;
  inset: 50%;
  border-top: 1px solid rgba(130, 218, 251, 0.15);
  border-left: 1px solid rgba(130, 218, 251, 0.15);
  transform: translate(-50%, -50%);
}

.blueprint::before { width: 58%; height: 48%; }
.blueprint::after { width: 80%; height: 76%; }

.node {
  position: absolute;
  min-width: 112px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  background: rgba(8, 16, 25, 0.92);
  color: var(--text);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.71rem;
}

.node::before {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 1px;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(130, 218, 251, 0.7);
}

.anchor { top: 42%; left: 50%; transform: translate(-50%, -50%); }
.upper-left { top: 12%; left: 9%; }
.upper-right { top: 12%; right: 9%; }
.lower-left { left: 10%; bottom: 18%; }
.lower-right { right: 7%; bottom: 18%; }
.bottom { left: 50%; bottom: 6%; transform: translateX(-50%); }

.section {
  margin-top: 22px;
}

.two-col {
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: start;
  padding: 26px 0 8px;
}

.stack,
.notes-list,
.operator-list,
.command-stack { display: grid; gap: 14px; }

.section-heading h2,
.rune-copy h2,
.closing-call h2 { margin-top: 8px; }
.section-heading-wide h2 { max-width: 13ch; }

.compare-grid,
.operator-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.compare-card ul,
.notes-list {
  margin-top: 14px;
  padding-left: 18px;
}

.compare-card.accent {
  border-color: rgba(130, 218, 251, 0.34);
  background: linear-gradient(180deg, rgba(9, 18, 29, 0.96), rgba(12, 22, 33, 0.88));
}

.card-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.capability-card {
  min-height: 220px;
}

.card-index {
  display: inline-block;
  color: var(--gold);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
}

.capability-card h3 { margin: 18px 0 10px; }

.rune-shell {
  padding: 28px;
}

.rune-layout {
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  margin-top: 20px;
  align-items: start;
}

.command-stack,
.repo-contract {
  padding: 20px;
}

.command-row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px 16px;
  padding: 14px 0;
  border-top: 1px solid rgba(130, 218, 251, 0.11);
}

.command-row:first-child { border-top: 0; padding-top: 0; }
.command-row span {
  color: var(--gold);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  padding-top: 5px;
}

.command-row code,
.repo-contract code,
pre {
  color: var(--accent-strong);
}

.command-row code {
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
}

.repo-contract pre {
  margin: 14px 0;
  overflow-x: auto;
  padding: 14px;
  border: 1px solid rgba(130, 218, 251, 0.13);
  background: rgba(5, 11, 18, 0.82);
  line-height: 1.8;
}

.operator-panel,
.notes-panel,
.closing-call { min-height: 100%; }

.operator-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 16px;
}

.operator-list div {
  padding: 16px;
  border: 1px solid rgba(130, 218, 251, 0.12);
  background: rgba(8, 15, 24, 0.56);
}

.operator-list strong,
.notes-list li::marker {
  color: var(--accent-strong);
}

.rule {
  height: 1px;
  margin: 18px 0;
  background: linear-gradient(90deg, rgba(130, 218, 251, 0.42), transparent);
}

.notes-list li { margin-bottom: 10px; color: var(--muted); }

.closing-call {
  margin: 26px 0 40px;
  padding: 28px;
}

@media (max-width: 1040px) {
  .hero-grid,
  .two-col,
  .rune-layout,
  .operator-grid { grid-template-columns: 1fr; }

  .topbar { grid-template-columns: 1fr; }
  .edition-mark { justify-content: flex-start; }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 24px, 1220px); }
  .hero-copy,
  .panel,
  .compare-card,
  .capability-card,
  .rune-shell,
  .operator-panel,
  .notes-panel,
  .closing-call { padding: 20px; }

  .signal-strip,
  .compare-grid,
  .card-grid,
  .operator-list { grid-template-columns: 1fr; }

  h1 { font-size: clamp(2.8rem, 15vw, 4.4rem); }
  h2 { font-size: clamp(1.8rem, 10vw, 2.9rem); }
  .blueprint { min-height: 360px; }
  .node { min-width: 96px; font-size: 0.66rem; }
  .upper-left { left: 4%; }
  .upper-right { right: 4%; }
  .lower-left { left: 4%; }
  .lower-right { right: 4%; }
}