/* ══════════════════════════════════════════════════════════════
   LAUDAGI LANDING PAGE — Dark + Crimson, Clean & Credible
   ══════════════════════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
  --accent: #ef4444;
  --accent-glow: rgba(239, 68, 68, 0.25);
  --accent-subtle: rgba(239, 68, 68, 0.08);
  --bg: #06070a;
  --bg-surface: #0d0e14;
  --bg-card: rgba(17, 18, 28, 0.7);
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(239, 68, 68, 0.3);
  --text-primary: #e2e4e9;
  --text-secondary: #8b8fa3;
  --text-muted: #5a5e72;
  --green: #22c55e;
  --max-w: 1200px;
  --radius: 16px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "Fira Code", monospace;
}

/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

/* ── Background Grid ── */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
  z-index: 0;
}

/* ── Canvas ── */
#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ══════════════════════════════════════
   NAV
   ══════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(1.5);
  background: rgba(6, 7, 10, 0.8);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.5px;
}

.nav-logo img {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--accent);
  color: #fff;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 101;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ══════════════════════════════════════
   HERO
   ══════════════════════════════════════ */
.hero {
  position: relative;
  z-index: 1;
  padding: 160px 32px 100px;
  text-align: center;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-subtle);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  padding: 6px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 32px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.hero h1 {
  font-size: clamp(40px, 7vw, 76px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  max-width: 900px;
  margin: 0 auto 24px;
}

.hero h1 .gradient {
  background: linear-gradient(135deg, #ef4444, #f97316, #ef4444);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

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

.hero-audience {
  margin-top: 32px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.3px;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: #fff;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px var(--accent-glow);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--text-primary);
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.btn-ghost:hover {
  background: var(--bg-card);
  border-color: rgba(255, 255, 255, 0.15);
}

/* ── Glow Pulse ── */
@keyframes glowPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.glow-pulse {
  animation: glowPulse 3s ease-in-out infinite;
}

/* ══════════════════════════════════════
   SECTION DEFAULTS
   ══════════════════════════════════════ */
section {
  position: relative;
  z-index: 1;
  padding: 100px 32px;
}

.section-label {
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  text-align: center;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-sub {
  text-align: center;
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 56px;
  line-height: 1.7;
}

/* ══════════════════════════════════════
   PROBLEM SECTION
   ══════════════════════════════════════ */
.problem-section {
  background: linear-gradient(180deg, transparent, rgba(239, 68, 68, 0.015), transparent);
}

.problem-grid {
  max-width: var(--max-w);
  margin: 0 auto 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
}

.problem-card:hover {
  border-color: rgba(239, 68, 68, 0.2);
  transform: translateY(-4px);
}

.problem-icon {
  width: 48px;
  height: 48px;
  background: rgba(239, 68, 68, 0.06);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

.problem-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.problem-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Solution banner */
.solution-banner {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  padding: 28px 32px;
  text-align: center;
}

.solution-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 8px;
}

.solution-banner p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ══════════════════════════════════════
   HOW IT WORKS — EXECUTION DEMO
   ══════════════════════════════════════ */
.how-section {
  background: var(--bg-surface);
}

.execution-demo {
  max-width: 720px;
  margin: 0 auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: 0 16px 64px rgba(0, 0, 0, 0.4);
}

.demo-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(17, 18, 28, 0.95);
  border-bottom: 1px solid var(--border);
}

.demo-dots {
  display: flex;
  gap: 6px;
}

.demo-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.demo-dots span:nth-child(1) { background: #ff5f57; }
.demo-dots span:nth-child(2) { background: #ffbd2e; }
.demo-dots span:nth-child(3) { background: #28c940; }

.demo-title {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-secondary);
}

.demo-body {
  padding: 24px;
  background: var(--bg);
}

.demo-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.demo-step {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.2s;
}

.demo-step:hover {
  border-color: rgba(255, 255, 255, 0.1);
}

.step-number {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent-subtle);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-label {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.step-detail {
  font-size: 12px;
  color: var(--text-muted);
}

.step-status {
  flex-shrink: 0;
}

.step-status.done {
  color: var(--green);
}

/* Meta row */
.demo-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.demo-meta-item {
  text-align: center;
}

.meta-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.meta-value {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

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

.demo-footnote {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 24px;
}

/* ══════════════════════════════════════
   FEATURES GRID
   ══════════════════════════════════════ */
.features-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}

.feature-card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 60px rgba(239, 68, 68, 0.06);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-subtle);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

.feature-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ══════════════════════════════════════
   CONTROL & SAFETY
   ══════════════════════════════════════ */
.control-section {
  background: linear-gradient(180deg, transparent, rgba(239, 68, 68, 0.015), transparent);
}

.control-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.control-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.3s, transform 0.3s;
}

.control-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

.control-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-subtle);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
}

.control-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.control-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ══════════════════════════════════════
   ARCHITECTURE
   ══════════════════════════════════════ */
.arch-section {
  background: var(--bg-surface);
}

.arch-container {
  max-width: var(--max-w);
  margin: 0 auto;
}

.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.arch-node {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 28px;
  text-align: center;
  min-width: 140px;
  transition: border-color 0.3s, transform 0.3s;
}

.arch-node:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
}

.arch-node-icon {
  margin-bottom: 8px;
  color: var(--accent);
  display: flex;
  justify-content: center;
}

.arch-node-label {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
}

.arch-node-desc {
  font-size: 11px;
  color: var(--text-muted);
}

.arch-arrow {
  font-size: 24px;
  color: var(--accent);
  opacity: 0.5;
  padding: 0 10px;
  display: flex;
  align-items: center;
}

/* Model Support */
.model-support {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.model-support-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.model-support-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.model-chips {
  padding: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.model-chip {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s;
}

.model-chip:hover {
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

.model-chip--accent {
  border-color: var(--border-accent);
  color: var(--accent);
}

/* ══════════════════════════════════════
   DIFFERENTIATION
   ══════════════════════════════════════ */
.different-section {
  background: linear-gradient(180deg, transparent, rgba(239, 68, 68, 0.015), transparent);
}

.diff-grid {
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.diff-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.3s, transform 0.3s;
}

.diff-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

.diff-vs {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.diff-not {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: line-through;
  text-decoration-color: rgba(239, 68, 68, 0.4);
}

.diff-arrow {
  color: var(--accent);
  font-size: 14px;
}

.diff-is {
  font-size: 14px;
  font-weight: 700;
  color: var(--green);
}

.diff-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ══════════════════════════════════════
   USE CASES
   ══════════════════════════════════════ */
.usecases {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  transition: border-color 0.3s, transform 0.3s;
}

.usecase-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

.usecase-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-subtle);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}

.usecase-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.usecase-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ══════════════════════════════════════
   COST SECTION
   ══════════════════════════════════════ */
.cost-section {
  background: var(--bg-surface);
}

.cost-grid {
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cost-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s;
}

.cost-card:hover {
  transform: translateY(-3px);
}

.cost-card--accent {
  border-color: var(--border-accent);
}

.cost-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.cost-price {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cost-card--accent .cost-price {
  background: linear-gradient(135deg, var(--accent), #f97316);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cost-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ══════════════════════════════════════
   GET STARTED
   ══════════════════════════════════════ */
.start-section {
  background: linear-gradient(180deg, transparent, rgba(239, 68, 68, 0.02), transparent);
}

.start-steps {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.start-step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.start-step-number {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--accent-subtle);
  border: 1px solid var(--border-accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
}

.start-step-content {
  flex: 1;
}

.start-step-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.start-step-content p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.6;
}

.code-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  overflow-x: auto;
}

.code-block code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ══════════════════════════════════════
   CTA
   ══════════════════════════════════════ */
.cta {
  text-align: center;
  padding: 120px 32px;
  position: relative;
  z-index: 1;
}

.cta-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(circle, rgba(239, 68, 68, 0.08), transparent 70%);
  pointer-events: none;
}

.cta h2 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.cta p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

/* ══════════════════════════════════════
   FOOTER
   ══════════════════════════════════════ */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 40px 32px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 13px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* ══════════════════════════════════════
   SCROLL REVEAL
   ══════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s, transform 0.7s;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.35s; }
.reveal-d5 { transition-delay: 0.4s; }

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .glow-pulse {
    animation: none;
  }

  .hero h1 .gradient {
    animation: none;
  }
}

/* ── Utility: hero z-index layer ── */
.hero-z {
  position: relative;
  z-index: 2;
}

/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */
@media (max-width: 900px) {
  .nav-hamburger {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    right: 16px;
    background: rgba(17, 18, 28, 0.97);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    flex-direction: column;
    padding: 16px 24px;
    gap: 12px;
    z-index: 99;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  }

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

  .nav-inner {
    position: relative;
  }

  .nav-cta {
    display: none;
  }

  .features-grid,
  .problem-grid {
    grid-template-columns: 1fr;
  }

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

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

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

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

  .arch-flow {
    flex-direction: column;
    gap: 8px;
  }

  .arch-arrow {
    transform: rotate(90deg);
  }

  .demo-meta {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 600px) {
  section {
    padding: 72px 20px;
  }

  .hero {
    padding: 120px 20px 72px;
    min-height: auto;
  }

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

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

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .start-step {
    flex-direction: column;
    gap: 12px;
  }
}