/* ============================================================
   QCrypton Landing Page — Dark Theme
   ============================================================ */

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

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1629;
  --bg-card: #141b2d;
  --bg-card-hover: #1a2340;
  --border: #1e2a45;
  --border-light: #2a3a5c;

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-dark: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.15);

  --cyan: #06b6d4;
  --emerald: #10b981;
  --amber: #f59e0b;
  --red: #ef4444;
  --purple: #a855f7;

  --gradient-primary: linear-gradient(135deg, #3b82f6, #06b6d4);
  --gradient-hero: linear-gradient(135deg, #3b82f6, #8b5cf6, #06b6d4);
  --gradient-card: linear-gradient(145deg, var(--bg-card), var(--bg-secondary));

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--cyan); }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600;
  border: none; cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
}
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-ghost:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent-light);
}
.btn-outline-light {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  padding: 8px 20px;
  font-size: 14px;
}
.btn-outline-light:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: var(--accent-glow);
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s ease;
  background: transparent;
}
.navbar.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-primary); text-decoration: none;
}
.nav-logo-icon { width: 36px; height: 36px; }
.nav-logo-text { font-size: 20px; font-weight: 700; letter-spacing: -0.5px; }
.nav-links {
  display: flex; list-style: none; gap: 32px;
}
.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-actions { display: flex; align-items: center; gap: 12px; }

.mobile-menu-btn {
  display: none; background: none; border: none; cursor: pointer;
  flex-direction: column; gap: 5px; padding: 4px;
}
.mobile-menu-btn span {
  display: block; width: 24px; height: 2px;
  background: var(--text-primary); transition: all 0.3s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 120px 24px 60px;
  overflow: hidden;
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
  pointer-events: none;
}
.hero-glow {
  position: absolute; top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.04) 40%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; text-align: center; max-width: 800px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 20px;
  font-size: 13px; font-weight: 600; color: var(--emerald);
  margin-bottom: 24px;
}
.pulse-dot {
  width: 8px; height: 8px;
  background: var(--emerald);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}
.gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 18px; color: var(--text-secondary);
  max-width: 640px; margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 24px; }
.hero-tagline {
  font-size: 13px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 2px; font-weight: 600;
}

/* Hero Metrics */
.hero-metrics {
  position: relative;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 64px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 900px; width: 100%;
}
.metric {
  background: var(--bg-card);
  padding: 28px 24px; text-align: center;
}
.metric-value {
  display: block;
  font-size: 28px; font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}
.metric-label {
  font-size: 12px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.5px;
}

/* ---------- Section Headers ---------- */
.section-header { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--accent-light);
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.section-header p {
  font-size: 16px; color: var(--text-secondary); line-height: 1.8;
}

/* ---------- Countdown ---------- */
.countdown-section { padding: 96px 0; background: var(--bg-secondary); }
.countdown-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.countdown-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
  position: relative; overflow: hidden;
}
.countdown-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.countdown-card.warn::before { background: linear-gradient(90deg, var(--amber), var(--amber)); }
.countdown-card.critical::before { background: linear-gradient(90deg, var(--red), var(--red)); }
.countdown-year {
  font-size: 56px; font-weight: 900;
  color: var(--text-primary); opacity: 0.15;
  position: absolute; top: 12px; right: 24px;
}
.countdown-label {
  font-size: 15px; color: var(--text-secondary);
  margin-bottom: 20px; line-height: 1.6;
}
.countdown-timer {
  font-size: 28px; font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  margin-bottom: 16px;
}
.countdown-status {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
}
.status-dot.amber { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.status-dot.red { background: var(--red); box-shadow: 0 0 8px var(--red); }
.status-dot.green { background: var(--emerald); box-shadow: 0 0 8px var(--emerald); }

/* ---------- Capabilities ---------- */
.capabilities { padding: 96px 0; }
.capabilities-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cap-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
  position: relative;
}
.cap-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.cap-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius);
  margin-bottom: 20px;
  color: var(--accent-light);
}
.cap-icon svg { width: 24px; height: 24px; }
.cap-card h3 {
  font-size: 18px; font-weight: 700;
  margin-bottom: 12px;
}
.cap-card p {
  font-size: 14px; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 16px;
}
.cap-tag {
  display: inline-block;
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--accent-light);
  background: var(--accent-glow);
  padding: 4px 10px; border-radius: 4px;
}

/* ---------- How It Works ---------- */
.how-it-works {
  padding: 96px 0;
  background: var(--bg-secondary);
}
.architecture-flow {
  max-width: 700px; margin: 0 auto;
}
.flow-step {
  display: flex; gap: 24px;
  position: relative;
  padding-bottom: 48px;
}
.flow-step:last-child { padding-bottom: 0; }
.flow-number {
  flex-shrink: 0;
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gradient-primary);
  border-radius: 50%;
  font-size: 18px; font-weight: 800; color: #fff;
  position: relative; z-index: 1;
}
.flow-connector {
  position: absolute;
  left: 28px; top: 56px; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--border));
}
.flow-step:last-child .flow-connector { display: none; }
.flow-content {
  flex: 1; padding-top: 8px;
}
.flow-content h3 {
  font-size: 20px; font-weight: 700; margin-bottom: 8px;
}
.flow-content p {
  font-size: 15px; color: var(--text-secondary); line-height: 1.7;
}

/* ---------- Threat Landscape ---------- */
.threat-landscape { padding: 96px 0; }
.threat-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-bottom: 64px;
}
.threat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.3s ease;
}
.threat-card:hover { border-color: var(--border-light); transform: translateY(-2px); }
.threat-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 16px;
}
.threat-severity {
  font-size: 10px; font-weight: 800;
  text-transform: uppercase; letter-spacing: 1.5px;
  padding: 3px 8px; border-radius: 4px;
}
.threat-header.critical .threat-severity { background: rgba(239, 68, 68, 0.15); color: var(--red); }
.threat-header.high .threat-severity { background: rgba(245, 158, 11, 0.15); color: var(--amber); }
.threat-header.warn .threat-severity { background: rgba(168, 85, 247, 0.15); color: var(--purple); }
.threat-header h3 { font-size: 16px; font-weight: 700; }
.threat-card > p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.threat-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.threat-tags span {
  font-size: 11px; font-weight: 600;
  padding: 3px 8px; border-radius: 4px;
  background: rgba(59, 130, 246, 0.08);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* Crypto Tiers */
.crypto-tiers { margin-top: 16px; }
.tiers-title {
  text-align: center;
  font-size: 22px; font-weight: 700;
  margin-bottom: 32px;
}
.tiers-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tier-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
}
.tier-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 12px;
}
.tier-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.tier-card h4 { font-size: 16px; font-weight: 700; }
.tier-card > p { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.tier-card ul {
  list-style: none; margin-bottom: 16px;
}
.tier-card ul li {
  font-size: 14px; color: var(--text-secondary);
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.tier-card ul li:last-child { border-bottom: none; }
.tier-action {
  font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  padding: 6px 12px; border-radius: 4px;
  text-align: center;
}
.tier-weak .tier-action { background: rgba(239, 68, 68, 0.1); color: var(--red); }
.tier-modern .tier-action { background: rgba(245, 158, 11, 0.1); color: var(--amber); }
.tier-pqc .tier-action { background: rgba(16, 185, 129, 0.1); color: var(--emerald); }

/* ---------- Live Status ---------- */
.live-status { padding: 96px 0; background: var(--bg-secondary); }
.status-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.status-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.status-indicator {
  width: 12px; height: 12px;
  border-radius: 50%; flex-shrink: 0;
}
.status-indicator.online {
  background: var(--emerald);
  box-shadow: 0 0 8px var(--emerald);
  animation: pulse 2s ease-in-out infinite;
}
.status-info h4 { font-size: 14px; font-weight: 600; }
.status-text { font-size: 13px; color: var(--text-muted); }

/* ---------- Use Cases ---------- */
.use-cases { padding: 96px 0; }
.usecase-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
}
.usecase-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.usecase-icon {
  font-size: 36px; margin-bottom: 16px;
  display: block;
}
.usecase-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.usecase-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ---------- Philosophy ---------- */
.philosophy { padding: 96px 0; background: var(--bg-secondary); }
.philosophy-content {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
}
.philosophy-text .section-tag { margin-bottom: 16px; }
.philosophy-text h2 {
  font-size: 36px; font-weight: 800;
  letter-spacing: -0.5px; margin-bottom: 24px;
}
.philosophy-lead {
  font-size: 17px; color: var(--text-primary);
  line-height: 1.8; margin-bottom: 20px;
  font-style: italic;
  border-left: 3px solid var(--accent);
  padding-left: 16px;
}
.philosophy-text p {
  font-size: 15px; color: var(--text-secondary);
  line-height: 1.8; margin-bottom: 16px;
}

/* Quantum Visual */
.philosophy-visual { display: flex; justify-content: center; align-items: center; }
.quantum-visual {
  position: relative; width: 300px; height: 300px;
  display: flex; align-items: center; justify-content: center;
}
.qubit-ring {
  width: 240px; height: 240px;
  border: 2px solid var(--border);
  border-radius: 50%;
  position: relative;
  animation: spin 20s linear infinite;
}
@keyframes spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }
.qubit {
  width: 16px; height: 16px;
  background: var(--accent);
  border-radius: 50%;
  position: absolute;
  box-shadow: 0 0 12px var(--accent), 0 0 24px rgba(59, 130, 246, 0.3);
  animation: qubit-glow 3s ease-in-out infinite alternate;
}
@keyframes qubit-glow {
  0% { box-shadow: 0 0 8px var(--accent); }
  100% { box-shadow: 0 0 20px var(--accent), 0 0 40px rgba(59, 130, 246, 0.3); }
}
.q1 { top: -8px; left: 50%; transform: translateX(-50%); }
.q2 { top: 25%; right: -8px; }
.q3 { bottom: 25%; right: -8px; }
.q4 { bottom: -8px; left: 50%; transform: translateX(-50%); }
.q5 { bottom: 25%; left: -8px; }
.q6 { top: 25%; left: -8px; }
.entangle-lines {
  position: absolute;
  width: 200px; height: 200px;
  border: 1px dashed rgba(59, 130, 246, 0.2);
  border-radius: 50%;
  animation: spin 30s linear infinite reverse;
}
.quantum-label {
  position: absolute; bottom: -10px;
  font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--text-muted);
}

/* ---------- FAQ ---------- */
.faq { padding: 96px 0; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  width: 100%; display: flex;
  justify-content: space-between; align-items: center;
  padding: 20px 0;
  background: none; border: none; cursor: pointer;
  font-size: 16px; font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--accent-light); }
.faq-toggle {
  font-size: 24px; font-weight: 300;
  color: var(--text-muted);
  transition: transform 0.3s;
  flex-shrink: 0; margin-left: 16px;
}
.faq-item.active .faq-toggle { transform: rotate(45deg); }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer { max-height: 300px; padding-bottom: 20px; }
.faq-answer p {
  font-size: 15px; color: var(--text-secondary);
  line-height: 1.8;
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 96px 0;
  background: var(--bg-secondary);
  text-align: center;
}
.cta-content h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800; margin-bottom: 16px;
}
.cta-content > p {
  font-size: 16px; color: var(--text-secondary);
  max-width: 560px; margin: 0 auto 32px;
}
.cta-actions {
  display: flex; justify-content: center; gap: 16px;
  margin-bottom: 32px;
}
.cta-cli {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
}
.cta-cli code {
  font-family: var(--font-mono);
  font-size: 14px; color: var(--emerald);
}
.copy-btn {
  background: none; border: 1px solid var(--border-light);
  color: var(--text-muted);
  padding: 4px 12px; border-radius: 4px;
  font-size: 12px; cursor: pointer;
  transition: all 0.2s;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent-light); }

/* ---------- Footer ---------- */
.footer { padding: 64px 0 32px; border-top: 1px solid var(--border); }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}
.footer-logo {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 12px;
}
.footer-logo-icon { width: 28px; height: 28px; }
.footer-logo span { font-size: 18px; font-weight: 700; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.footer-col h4 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; color: var(--text-secondary); }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 14px; color: var(--text-muted); }
.footer-col ul a:hover { color: var(--text-primary); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.footer-bottom p { font-size: 13px; color: var(--text-muted); }
.footer-social { display: flex; gap: 16px; }
.footer-social a { color: var(--text-muted); transition: color 0.2s; }
.footer-social a:hover { color: var(--text-primary); }

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .capabilities-grid, .threat-grid, .tiers-grid, .usecase-grid { grid-template-columns: repeat(2, 1fr); }
  .philosophy-content { grid-template-columns: 1fr; }
  .philosophy-visual { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: flex; }
  .nav-links.active {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(16px);
    padding: 24px;
    border-bottom: 1px solid var(--border);
    gap: 16px;
  }

  .hero-metrics { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: center; }

  .countdown-grid { grid-template-columns: 1fr; }
  .capabilities-grid, .threat-grid, .tiers-grid, .usecase-grid, .status-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }

  .flow-step { flex-direction: column; }
  .flow-connector {
    left: 28px; top: 56px;
  }

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

@media (max-width: 480px) {
  .hero-metrics { grid-template-columns: 1fr; }
  .hero { padding: 100px 16px 40px; }
  .container { padding: 0 16px; }
}