:root {
  --volta-black: #000000;
  --volta-white: #ffffff;
  --volta-violet: #6C5CFE;
  --volta-blue: #3998F3;
  --volta-cyan: #05D4E8;
  --volta-coral: #FF7C64;
  --volta-orange: #FF9345;
  --volta-yellow: #FFBB0E;
  --gradient-rainbow: linear-gradient(90deg, #6C5CFE 0%, #3998F3 20%, #05D4E8 40%, #FF7C64 70%, #FF9345 80%, #FFBB0E 100%);
  --bg: #000000;
  --card: #111111;
  --card-2: #151515;
  --card-border: #222222;
  --fg-1: #ffffff;
  --fg-2: rgba(255, 255, 255, .72);
  --fg-3: rgba(255, 255, 255, .52);
  --fg-4: rgba(255, 255, 255, .34);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
  color: var(--fg-1);
  font-family: var(--font-sans);
  line-height: 1.5;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg-1);
  overflow-x: hidden;
}

a {
  color: inherit;
}

p,
h1,
h2,
h3 {
  margin-top: 0;
}

p {
  color: var(--fg-2);
}

.rainbow-rule {
  background: var(--gradient-rainbow);
}

.rainbow-rule {
  height: 3px;
}

.site-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 28px 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  width: 168px;
  min-width: 168px;
}

.brand-mark img {
  display: block;
  width: 100%;
  height: auto;
}

.top-nav {
  display: flex;
  justify-content: center;
  gap: 22px;
  min-width: 0;
}

.top-nav a,
.header-action,
.button,
.step-row a {
  text-decoration: none;
}

.top-nav a {
  color: var(--fg-3);
  font-size: 13px;
  font-weight: 700;
  transition: color 200ms var(--ease);
}

.top-nav a:hover {
  color: #9589FF;
}

.header-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  transition: border-color 200ms var(--ease), background 200ms var(--ease), color 200ms var(--ease), transform 120ms var(--ease);
}

.header-action {
  padding: 9px 14px;
  border: 1px solid var(--card-border);
  color: var(--fg-2);
  background: var(--card);
  white-space: nowrap;
}

.header-action:hover,
.button.secondary:hover {
  border-color: var(--volta-violet);
  background: #181818;
  color: var(--fg-1);
}

.header-action:active,
.button:active {
  transform: scale(.98);
}

.hero-section {
  padding: 24px 0 56px;
}

.hero-shell,
.content-section,
.metrics-grid,
.site-footer {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: 48px;
  align-items: center;
}

.hero-copy {
  min-width: 0;
  padding: 48px 0 14px;
}

.eyebrow,
.panel-label,
.metric-label,
.story-number,
.step-row > span {
  color: #9589FF;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

h1 {
  max-width: 840px;
  margin: 12px 0 20px;
  font-size: clamp(44px, 7vw, 76px);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -.02em;
}

.hero-lede {
  max-width: 760px;
  margin-bottom: 0;
  font-size: 19px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  padding: 10px 18px;
}

.button.primary {
  border: 1px solid var(--volta-violet);
  background: var(--volta-violet);
  color: var(--volta-white);
}

.button.primary:hover {
  border-color: #9589FF;
  background: #5d4df0;
}

.button.secondary {
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--fg-2);
}

.button.github {
  gap: 8px;
  border: 1px solid #238636;
  background: #238636;
  color: var(--volta-white);
}

.button.github:hover {
  border-color: #2EA043;
  background: #2EA043;
}

.github-mark {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.operating-panel {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  background: var(--card);
}

.operating-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: var(--gradient-rainbow);
}

.panel-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 22px 0;
}

.panel-status {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 9px;
  border: 1px solid rgba(108, 92, 254, .3);
  border-radius: var(--radius-sm);
  background: rgba(108, 92, 254, .12);
  color: var(--fg-1);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.loop-list {
  display: grid;
  gap: 0;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.loop-list li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 22px;
  border-top: 1px solid var(--card-border);
}

.loop-list span {
  color: var(--fg-4);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  grid-row: 1 / span 2;
}

.loop-list strong {
  display: block;
  grid-column: 2;
  margin-bottom: 5px;
  font-size: 15px;
}

.loop-list p {
  grid-column: 2;
  margin-bottom: 0;
  font-size: 13px;
  line-height: 1.55;
}

.metrics-band {
  padding: 0 0 74px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.metric-card {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  background: var(--card);
  text-align: center;
}

.metric-value {
  color: var(--volta-violet);
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}

.metric-card:nth-child(2) .metric-value {
  color: var(--volta-cyan);
}

.metric-card:nth-child(3) .metric-value {
  color: var(--volta-coral);
}

.metric-card:nth-child(4) .metric-value {
  color: var(--volta-yellow);
}

.metric-label {
  margin-top: 9px;
  color: var(--fg-3);
}

.content-section {
  padding: 38px 0 80px;
  border-top: 1px solid var(--card-border);
}

.section-head {
  max-width: 820px;
  margin-bottom: 28px;
}

.section-head.compact {
  max-width: 760px;
}

h2 {
  margin: 8px 0 14px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -.02em;
}

.section-head p,
.guardrail-copy p {
  margin-bottom: 0;
  font-size: 17px;
  line-height: 1.75;
}

.story-grid,
.output-grid {
  display: grid;
  gap: 16px;
}

.story-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.story-card,
.output-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  background: var(--card);
}

.story-card {
  min-height: 220px;
  padding: 26px;
}

.story-card h3,
.output-card h3,
.step-row h3 {
  margin: 10px 0 10px;
  font-size: 21px;
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -.01em;
}

.story-card p,
.output-card p,
.step-row p {
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.7;
}

.steps-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--card-border);
}

.step-row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--card-border);
}

.step-row > span {
  color: var(--fg-4);
}

.step-row h3 {
  margin-top: 0;
  font-size: 23px;
}

.step-row a {
  display: inline-flex;
  margin-top: 12px;
  color: #9589FF;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.step-row a:hover {
  color: var(--volta-cyan);
}

.output-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.output-card {
  min-height: 190px;
  padding: 24px;
}

.guardrail-section {
  display: grid;
  grid-template-columns: minmax(0, .86fr) minmax(320px, 1fr);
  gap: 48px;
  align-items: start;
  padding-bottom: 88px;
}

.approval-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--card-border);
}

.approval-list div {
  display: grid;
  grid-template-columns: minmax(140px, .35fr) minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--card-border);
}

.approval-list strong {
  font-size: 14px;
}

.approval-list span {
  color: var(--fg-2);
  font-size: 14px;
  line-height: 1.6;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 36px 0 44px;
  border-top: 1px solid var(--card-border);
  color: var(--fg-3);
  font-size: 13px;
}

@media (max-width: 920px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .top-nav {
    display: none;
  }

  .hero-shell,
  .guardrail-section {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding-top: 28px;
  }

  .operating-panel {
    max-width: 620px;
  }

  .metrics-grid,
  .story-grid,
  .output-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header,
  .hero-shell,
  .content-section,
  .metrics-grid,
  .site-footer {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    grid-template-columns: 1fr;
    gap: 16px;
    justify-items: start;
    padding: 22px 0;
  }

  .header-action {
    width: 100%;
  }

  h1 {
    font-size: 43px;
  }

  .hero-lede {
    font-size: 17px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .metrics-grid,
  .story-grid,
  .output-grid {
    grid-template-columns: 1fr;
  }

  .metrics-band,
  .content-section {
    padding-bottom: 56px;
  }

  .loop-list li,
  .step-row,
  .approval-list div {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .step-row {
    padding: 24px 0;
  }

  .site-footer {
    flex-direction: column;
  }
}