:root {
  --primary: #f8fafc;
  --surface: #ffffff;
  --surface-light: #eef4fb;
  --border: #d7e1ec;
  --accent: #3b82f6;
  --accent-dim: rgba(59, 130, 246, 0.12);
  --accent-glow: rgba(59, 130, 246, 0.3);
  --green: #16a34a;
  --green-dim: rgba(22, 163, 74, 0.14);
  --amber: #f59e0b;
  --text: #0f172a;
  --heading: #020617;
  --text-muted: #475569;
  --text-dim: #64748b;
  --white: #ffffff;
  --button-text: #ffffff;
  --header-bg: rgba(248, 250, 252, 0.9);
  --hero-glow: rgba(59, 130, 246, 0.12);
  --chip-bg: rgba(15, 23, 42, 0.04);
  --chip-border: rgba(100, 116, 139, 0.2);
  --metric-bg: rgba(148, 163, 184, 0.08);
  --metric-border: rgba(148, 163, 184, 0.2);
  --terminal-bg: #0f172a;
  --terminal-header: #172033;
  --terminal-text: #cbd5e1;
  --terminal-title: #94a3b8;
  --terminal-time: #94a3b8;
  --terminal-comment: #8b949e;
  --error: #dc2626;
  --font-heading: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  color-scheme: light;
}

html[data-theme="dark"] {
  --primary: #0a0f1a;
  --surface: #111827;
  --surface-light: #1a2332;
  --border: #2a3444;
  --accent: #3b82f6;
  --accent-dim: rgba(59, 130, 246, 0.15);
  --accent-glow: rgba(59, 130, 246, 0.3);
  --green: #22c55e;
  --green-dim: rgba(34, 197, 94, 0.15);
  --amber: #f59e0b;
  --text: #e2e8f0;
  --heading: #ffffff;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --white: #ffffff;
  --button-text: #ffffff;
  --header-bg: rgba(10, 15, 26, 0.9);
  --hero-glow: rgba(59, 130, 246, 0.08);
  --chip-bg: rgba(255, 255, 255, 0.05);
  --chip-border: rgba(255, 255, 255, 0.06);
  --metric-bg: rgba(255, 255, 255, 0.03);
  --metric-border: rgba(255, 255, 255, 0.05);
  --terminal-bg: #0d1117;
  --terminal-header: #161b22;
  --terminal-text: #94a3b8;
  --terminal-title: #64748b;
  --terminal-time: #64748b;
  --terminal-comment: #6a737d;
  --error: #ef4444;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--text);
  background-color: var(--primary);
  transition: background-color 0.25s ease, color 0.25s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-light);
  color: var(--heading);
  cursor: pointer;
}

.nav-menu-toggle-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-menu-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--heading);
  text-decoration: none;
  letter-spacing: 2px;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a.active {
  color: var(--accent);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  cursor: pointer;
}

.nav-menu-toggle:focus-visible,
.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle-track {
  position: relative;
  --theme-toggle-shift: 26px;
  width: 58px;
  height: 32px;
  background: var(--surface-light);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.theme-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 4px 14px var(--accent-glow);
  transition: transform 0.25s ease;
}

html[data-theme="dark"] .theme-toggle-thumb {
  transform: translateX(var(--theme-toggle-shift));
}

.theme-toggle-label {
  min-width: 78px;
  text-align: left;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background:
    radial-gradient(ellipse at 50% 0%, var(--hero-glow) 0%, transparent 60%),
    var(--primary);
}

.hero-content {
  max-width: 900px;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 3px;
  margin-bottom: 24px;
  padding: 6px 16px;
  border: 1px solid var(--accent-dim);
  border-radius: 4px;
  background: var(--accent-dim);
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--heading);
  letter-spacing: -0.5px;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 16px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s, background 0.2s;
  min-width: 90px;
}

.hero-flow-step:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.flow-icon {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.flow-icon svg {
  width: 100%;
  height: 100%;
}

.flow-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.flow-arrow {
  color: var(--text-dim);
  font-size: 1.2rem;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  background: var(--accent);
  color: var(--button-text);
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: #2563eb;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--heading);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--surface-light);
  box-shadow: none;
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-title {
  text-align: center;
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 16px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 650px;
  margin: 0 auto 64px;
  line-height: 1.7;
}

/* Pipeline Section */
.pipeline-section {
  background: var(--primary);
  border-top: 1px solid var(--border);
}

.pipeline-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 64px;
  flex-wrap: wrap;
  padding: 32px 0;
}

.pipeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.2s, background 0.2s;
  cursor: default;
  min-width: 80px;
}

.pipeline-node:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.node-number {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
}

.node-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pipeline-arrow {
  color: var(--text-dim);
  font-size: 1.2rem;
}

.pipeline-stages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.stage-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
  transition: border-color 0.2s, transform 0.2s;
}

.stage-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.stage-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.stage-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: 4px;
}

.stage-card h3 {
  font-size: 1.15rem;
  color: var(--heading);
  font-weight: 700;
}

.stage-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

.stage-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stage-tech span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  background: var(--chip-bg);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--chip-border);
}

/* Capabilities Section */
.capabilities-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.capability-card {
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 36px;
  transition: border-color 0.2s, transform 0.2s;
}

.capability-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.cap-icon {
  width: 40px;
  height: 40px;
  color: var(--accent);
  margin-bottom: 20px;
}

.cap-icon svg {
  width: 100%;
  height: 100%;
}

.capability-card h3 {
  color: var(--heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.capability-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* Case Study Section */
.case-study-section {
  background: var(--primary);
  border-top: 1px solid var(--border);
}

.case-study-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 48px;
}

.case-study-card > * {
  min-width: 0;
}

.case-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--green);
  letter-spacing: 2px;
  margin-bottom: 16px;
  padding: 4px 12px;
  background: var(--green-dim);
  border-radius: 4px;
  display: inline-block;
}

.case-study-content h3 {
  font-size: 1.5rem;
  color: var(--heading);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.case-study-content > p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 32px;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.metric {
  display: flex;
  flex-direction: column;
  text-align: center;
  padding: 16px 8px;
  background: var(--metric-bg);
  border-radius: 6px;
  border: 1px solid var(--metric-border);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--heading);
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

.case-tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.case-tech-list span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 5px 12px;
  border-radius: 4px;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Terminal Window */
.terminal-window {
  background: var(--terminal-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--font-mono);
}

.terminal-header {
  background: var(--terminal-header);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
  font-size: 0.75rem;
  color: var(--terminal-title);
  margin-left: 8px;
}

.terminal-body {
  padding: 20px;
  overflow-x: auto;
}

.terminal-body code {
  font-size: 0.78rem;
  line-height: 1.8;
  white-space: pre;
  display: block;
  color: var(--terminal-text);
}

.t-comment { color: var(--terminal-comment); }
.t-time { color: var(--terminal-time); }
.t-stage { color: var(--accent); font-weight: 600; }
.t-ok { color: var(--green); }
.t-done { color: var(--green); font-weight: 700; }

/* Client Cards */
.clients-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.client-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 36px;
  transition: border-color 0.2s, transform 0.2s;
}

.client-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.client-card h3 {
  font-size: 1.3rem;
  color: var(--heading);
  font-weight: 700;
  margin-bottom: 12px;
}

.client-card > p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

.client-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.client-tech span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--green);
  background: var(--green-dim);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.client-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

.client-link:hover {
  color: var(--heading);
}

/* Stack Section */
.stack-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.stack-grid-6 {
  grid-template-columns: repeat(6, 1fr);
}

.stack-category h4 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.stack-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stack-item {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 10px 14px;
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color 0.2s;
}

.stack-item:hover {
  border-color: var(--accent);
}

/* Philosophy Section */
.philosophy-section {
  background: var(--primary);
  border-top: 1px solid var(--border);
}

.philosophy-content {
  max-width: 800px;
  margin: 0 auto;
}

.philosophy-content h2 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 20px;
  text-align: center;
}

.philosophy-content > p {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
  text-align: center;
  margin-bottom: 48px;
}

.philosophy-principles {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.principle {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.principle-marker {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.principle strong {
  color: var(--heading);
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
}

.principle p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Contact Section */
.contact-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.contact-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-container > p {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 32px;
}

/* Applied AI Page */
.guide-hero {
  min-height: auto;
  padding-bottom: 96px;
}

.guide-hero .hero-content {
  max-width: 980px;
}

.guide-hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.guide-hero-panel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  text-align: left;
}

.guide-pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
}

.guide-pill strong {
  display: block;
  color: var(--heading);
  margin-bottom: 6px;
  font-size: 0.98rem;
}

.guide-pill p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.guide-grid {
  display: grid;
  gap: 24px;
}

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

.guide-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}

.guide-card h3 {
  color: var(--heading);
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.guide-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card-kicker {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.drip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 28px;
}

.drip-card {
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.drip-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.drip-card h3 {
  color: var(--heading);
  margin-bottom: 8px;
  font-size: 1rem;
}

.drip-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.section-note,
.prompt-formula,
.cta-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 28px;
}

.section-note p,
.prompt-formula p,
.cta-panel p {
  color: var(--text-muted);
  line-height: 1.7;
}

.roadmap-grid,
.use-case-grid,
.prompt-grid,
.guardrails-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.roadmap-card,
.use-case-card,
.prompt-card,
.guardrail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}

.roadmap-step {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 1px;
}

.roadmap-card h3,
.use-case-card h3,
.prompt-card h3,
.guardrail-card h3,
.cta-panel h3 {
  color: var(--heading);
  margin-bottom: 12px;
  font-size: 1.18rem;
}

.roadmap-card p,
.use-case-card p,
.prompt-card p,
.guardrail-card p {
  color: var(--text-muted);
  line-height: 1.7;
  font-size: 0.95rem;
}

.roadmap-list,
.use-case-list {
  list-style: none;
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.roadmap-list li,
.use-case-list li {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  padding-left: 18px;
  position: relative;
}

.roadmap-list li::before,
.use-case-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.use-case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.use-case-meta span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  background: var(--chip-bg);
  border: 1px solid var(--chip-border);
  border-radius: 999px;
  padding: 4px 10px;
}

.prompt-card.good {
  border-color: rgba(34, 197, 94, 0.35);
}

.prompt-example {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--text);
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  white-space: pre-wrap;
}

.prompt-formula {
  margin-top: 24px;
}

.prompt-formula strong {
  color: var(--heading);
}

.guardrails-grid {
  margin-bottom: 24px;
}

.guardrail-card {
  min-height: 100%;
}

.cta-panel {
  text-align: center;
}

.cta-panel p {
  max-width: 760px;
  margin: 0 auto 24px;
}

.contact-form {
  text-align: left;
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group label .required {
  color: var(--accent);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn-submit {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-status {
  margin-top: 16px;
  font-size: 0.9rem;
  text-align: center;
  min-height: 24px;
}

.form-status.success {
  color: var(--green);
}

.form-status.error {
  color: var(--error);
}

.location {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-top: 8px;
}

/* Footer */
footer {
  background: var(--primary);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--heading);
  font-size: 1rem;
  letter-spacing: 2px;
}

.footer-tagline {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.copyright {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 1024px) {
  .pipeline-stages {
    grid-template-columns: repeat(2, 1fr);
  }

  .capabilities-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .stack-grid-6 {
    grid-template-columns: repeat(3, 1fr);
  }

  .drip-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-study-card {
    grid-template-columns: 1fr;
  }

  .clients-row {
    grid-template-columns: 1fr;
  }

  .guide-hero-panel,
  .guide-grid-3,
  .roadmap-grid,
  .use-case-grid,
  .prompt-grid,
  .guardrails-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.4rem;
  }

  .hero-flow {
    gap: 8px;
  }

  .hero-flow-step {
    padding: 12px 16px;
    min-width: 70px;
  }

  .flow-icon {
    width: 22px;
    height: 22px;
  }

  .flow-label {
    font-size: 0.7rem;
  }

  .pipeline-stages,
  .capabilities-grid {
    grid-template-columns: 1fr;
  }

  .drip-grid {
    grid-template-columns: 1fr;
  }

  .stack-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-study-card {
    padding: 28px;
    gap: 28px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  nav {
    position: relative;
    height: 70px;
    padding: 0;
    gap: 12px;
  }

  .logo {
    font-size: 1.1rem;
    letter-spacing: 1.2px;
    text-align: left;
    max-width: calc(100% - 64px);
  }

  .nav-menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-controls {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 16px;
    width: 100%;
    align-items: flex-start;
    padding: 16px 0 20px;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 18px 32px rgba(15, 23, 42, 0.08);
  }

  nav.nav-open .nav-controls {
    display: flex;
  }

  .nav-links {
    width: 100%;
    gap: 14px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links li {
    width: auto;
    display: block;
  }

  .nav-links a {
    font-size: 0.8rem;
    letter-spacing: 0.35px;
    text-align: left;
  }

  .theme-toggle {
    width: auto;
    justify-content: flex-start;
    gap: 8px;
    font-size: 0.68rem;
    letter-spacing: 0.45px;
  }

  .theme-toggle-track {
    --theme-toggle-shift: 18px;
    width: 42px;
    height: 24px;
  }

  .theme-toggle-thumb {
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
  }

  nav.nav-open .nav-menu-toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  nav.nav-open .nav-menu-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  nav.nav-open .nav-menu-toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .theme-toggle-label {
    min-width: 0;
  }

  .guide-hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .guide-hero-actions .btn {
    width: 100%;
  }

  .footer-content {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .section {
    padding: 64px 0;
  }

  .pipeline-flow {
    gap: 4px;
  }

  .pipeline-node {
    min-width: 60px;
    padding: 8px 10px;
  }

  .node-number {
    font-size: 0.9rem;
  }

  .node-label {
    font-size: 0.65rem;
  }

  .pipeline-arrow {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .stack-grid {
    grid-template-columns: 1fr;
  }

  .roadmap-card,
  .use-case-card,
  .prompt-card,
  .guardrail-card,
  .guide-card,
  .drip-card {
    padding: 24px;
  }

  .logo {
    font-size: 1rem;
    letter-spacing: 1px;
  }

  .nav-links {
    gap: 10px;
  }

  .nav-links a {
    font-size: 0.74rem;
  }

  .nav-controls {
    padding-bottom: 18px;
  }

  .case-study-card {
    padding: 22px;
    gap: 22px;
  }

  .case-study-content h3 {
    font-size: 1.15rem;
  }

  .case-study-content > p {
    font-size: 0.92rem;
    margin-bottom: 24px;
  }

  .case-metrics {
    gap: 12px;
  }

  .metric {
    min-width: 0;
    padding: 14px 6px;
  }

  .metric-value {
    font-size: 1.15rem;
  }

  .metric-label {
    font-size: 0.68rem;
  }

  .terminal-body {
    padding: 16px;
  }

  .terminal-body code {
    font-size: 0.7rem;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
  }

  .flow-arrow {
    font-size: 0.9rem;
  }
}