:root {
  color-scheme: light;
  --ink: #15211c;
  --muted: #58635d;
  --line: #d8dfda;
  --paper: #f7f8f5;
  --surface: #ffffff;
  --accent: #16725b;
  --accent-strong: #0f5a48;
  --terminal: #111816;
  --terminal-line: #2b3733;
  --terminal-text: #d7efe5;
  --gold: #c3922e;
  --blue: #315f8f;
  --shadow: 0 18px 50px rgba(35, 48, 42, 0.12);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(216, 223, 218, 0.9);
  background: rgba(247, 248, 245, 0.94);
  backdrop-filter: blur(16px);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  gap: 24px;
}

.brand {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a {
  padding: 8px 0;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent-strong);
}

.section-band {
  padding: 88px 0;
}

.section-light {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.section-inner,
.hero {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: 48px;
  min-height: calc(100vh - 72px);
  padding-top: 56px;
  padding-bottom: 72px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin: 8px 0 12px;
  font-size: 1.15rem;
  line-height: 1.25;
}

.hero-summary,
.section-intro {
  max-width: 700px;
  color: var(--muted);
}

.hero-summary {
  margin: 24px 0 0;
  font-size: 1.2rem;
}

.section-intro {
  margin: 18px 0 0;
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  font-weight: 700;
}

.button-primary {
  color: #ffffff;
  background: var(--accent);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-strong);
}

.button-secondary {
  color: var(--accent-strong);
  background: transparent;
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(22, 114, 91, 0.08);
}

.terminal-preview {
  overflow: hidden;
  border: 1px solid var(--terminal-line);
  border-radius: 8px;
  background: var(--terminal);
  box-shadow: var(--shadow);
}

.terminal-topbar {
  display: flex;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--terminal-line);
}

.terminal-topbar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
}

.terminal-topbar span:nth-child(2) {
  background: #6ca56e;
}

.terminal-topbar span:nth-child(3) {
  background: var(--blue);
}

.terminal-body {
  min-height: 340px;
  padding: 32px;
  color: var(--terminal-text);
  font-family:
    "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 1rem;
}

.terminal-body p {
  margin: 0 0 18px;
}

.ascii-banner {
  margin: 0 0 20px;
  color: #f1f7f4;
  font-size: 1rem;
  line-height: 1.25;
  white-space: pre;
}

.prompt {
  color: #7bd3b3;
  font-weight: 800;
}

.muted-line {
  color: #93aaa0;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.step-card,
.demo-card,
.highlight-card,
.code-map article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.step-card {
  min-height: 214px;
  padding: 20px;
}

.highlight-card {
  min-height: 232px;
  padding: 22px;
}

.highlight-card p {
  margin: 0;
  color: var(--muted);
}

.step-number,
.phase,
.feature-index {
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.doc-link-row {
  margin: 28px 0 0;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--accent-strong);
  font-weight: 800;
  border-bottom: 2px solid rgba(22, 114, 91, 0.22);
}

.text-link:hover,
.text-link:focus-visible {
  border-bottom-color: var(--accent-strong);
}

.feature-list {
  display: grid;
  gap: 0;
  margin-top: 36px;
  border-top: 1px solid var(--line);
}

.feature-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 22px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.feature-item h3,
.feature-item p {
  margin: 0;
}

.feature-item p {
  margin-top: 8px;
  color: var(--muted);
}

.code-map {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.code-map article {
  padding: 22px;
}

.code-map p {
  margin: 0;
  color: var(--muted);
}

pre {
  overflow-x: auto;
  margin: 18px 0 0;
  padding: 14px;
  border-radius: 8px;
  background: #18211e;
  color: var(--terminal-text);
}

code {
  font-family:
    "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.88rem;
}

.demo-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 24px;
  margin-top: 36px;
}

.media-placeholder {
  display: grid;
  place-items: center;
  min-height: 420px;
  padding: 24px;
  border: 1px dashed #a9b6af;
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
}

.demo-video-link {
  display: grid;
  justify-items: center;
  gap: 12px;
  width: 100%;
  min-height: 300px;
  padding: 48px 24px;
  border-radius: 8px;
  color: var(--ink);
  text-align: center;
  background:
    linear-gradient(135deg, rgba(22, 114, 91, 0.08), rgba(49, 95, 143, 0.08)),
    var(--surface);
}

.demo-video-link:hover,
.demo-video-link:focus-visible {
  outline: 2px solid rgba(22, 114, 91, 0.32);
  outline-offset: 4px;
}

.play-mark {
  width: 58px;
  height: 58px;
  clip-path: polygon(18% 10%, 18% 90%, 88% 50%);
  background: var(--accent);
}

.demo-video-title {
  font-size: 1.35rem;
  font-weight: 800;
}

.demo-video-copy {
  color: var(--muted);
}

.demo-card-list {
  display: grid;
  gap: 14px;
}

.demo-card {
  padding: 20px;
}

.demo-card p {
  margin: 0;
  color: var(--muted);
}

.demo-card .phase {
  color: var(--accent-strong);
}

.site-footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 840px) {
  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    min-height: 96px;
    gap: 8px;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 14px;
  }

  .section-band {
    padding: 64px 0;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 48px;
  }

  .terminal-body {
    min-height: 220px;
  }

  .step-grid,
  .highlight-grid,
  .demo-layout,
  .code-map {
    grid-template-columns: 1fr;
  }

  .feature-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 520px) {
  .site-nav,
  .section-inner,
  .hero,
  .site-footer {
    width: min(100% - 24px, 1120px);
  }

  .nav-links {
    font-size: 0.9rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .step-card,
  .demo-card,
  .highlight-card,
  .code-map article,
  .terminal-body {
    padding: 16px;
  }

  .media-placeholder {
    min-height: 280px;
  }
}