/* ==========================================================================
   NYXO UNIVERSAL PRINTER — OBSIDIAN PRECISION DESIGN SYSTEM
   Modern, formal, technical minimalism with monochromatic rigor.
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-canvas: #0a0d14;
  --bg-surface: #0e131f;
  --bg-surface-elevated: #161d2e;
  --bg-surface-card: #111624;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(255, 255, 255, 0.18);
  --border-highlight: rgba(255, 255, 255, 0.28);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;
  
  /* Telemetry Status Accents */
  --accent-emerald: #10b981;
  --accent-emerald-bg: rgba(16, 185, 129, 0.1);
  --accent-emerald-border: rgba(16, 185, 129, 0.3);
  --accent-cyan: #06b6d4;
  --accent-cyan-bg: rgba(6, 182, 212, 0.1);
  
  /* Layout */
  --container-max: 1280px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.15s ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 20, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  min-height: 64px;
  display: flex;
  align-items: center;
  padding: 6px 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  flex-shrink: 0;
}

.brand-logo {
  height: 28px;
  width: auto;
  display: block;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-left: 1px solid var(--border-subtle);
  padding-left: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.lang-btn .flag-img {
  width: 18px;
  height: 12px;
  border-radius: 2px;
  object-fit: cover;
  display: inline-block;
  vertical-align: middle;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.lang-btn .flag-emoji {
  font-size: 13px;
  line-height: 1;
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn.active {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-active);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-actions .btn {
  padding: 6px 14px;
  font-size: 12.5px;
}

.btn-primary {
  background: #f8fafc;
  color: #0a0d14;
  border: 1px solid #ffffff;
}

.btn-primary:hover {
  background: #e2e8f0;
  box-shadow: 0 2px 12px rgba(255, 255, 255, 0.12);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-active);
}

.btn-lg {
  padding: 12px 24px;
  font-size: 14px;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  background: radial-gradient(circle at 50% 0%, rgba(16, 22, 36, 0.6) 0%, transparent 70%);
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald);
}

.hero-title {
  font-size: 46px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 860px;
  margin: 0 auto 20px;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 32px;
  line-height: 1.6;
  font-weight: 400;
}

/* Terminal Command Box */
.terminal-box {
  max-width: 540px;
  margin: 0 auto 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 6px 8px 6px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 13px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.terminal-box .cmd-text {
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
}

.terminal-box .prompt {
  color: var(--accent-emerald);
  font-weight: 700;
}

.btn-copy {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-copy:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
}

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

.hero-trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  max-width: 800px;
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.hero-trust-bar span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   SPLIT ARCHITECTURE & LIVE EMULATOR
   ========================================================================== */
.section-arch {
  padding: 70px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-head {
  margin-bottom: 32px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-emerald);
  margin-bottom: 6px;
}

.section-title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
  max-width: 600px;
}

.telemetry-badges {
  display: flex;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.badge-telemetry {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}

.split-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
}

.ide-panel {
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  background: #0d111a;
}

.ide-header {
  height: 40px;
  background: #111622;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

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

.ide-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.ide-dot.red { background: #ef4444; opacity: 0.8; }
.ide-dot.yellow { background: #f59e0b; opacity: 0.8; }
.ide-dot.green { background: #10b981; opacity: 0.8; }

.ide-tab {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  margin-left: 12px;
}

.ide-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.65;
  overflow-x: auto;
  color: #cbd5e1;
}

.kw { color: #f43f5e; }
.fn { color: #38bdf8; }
.str { color: #34d399; }
.comment { color: #64748b; font-style: italic; }
.cls { color: #fbbf24; }

/* Simulator (Right) */
.simulator-panel {
  padding: 30px;
  background: #080a0f;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.simulator-header {
  width: 100%;
  max-width: 320px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.thermal-paper {
  width: 100%;
  max-width: 300px;
  background: #ffffff;
  color: #0f172a;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 20px 18px 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.8);
  border-top: 3px solid #cbd5e1;
  user-select: none;
}

.receipt-header {
  text-align: center;
  border-bottom: 1px solid #cbd5e1;
  padding-bottom: 8px;
  margin-bottom: 8px;
}

.receipt-brand {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.receipt-meta {
  font-size: 9px;
  color: #475569;
  text-transform: uppercase;
  margin-top: 2px;
}

.receipt-table-box {
  background: #f1f5f9;
  font-weight: 700;
  text-align: center;
  padding: 3px;
  margin-bottom: 8px;
  font-size: 10px;
}

.receipt-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}

.receipt-total {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 13px;
  border-top: 1px dashed #94a3b8;
  padding-top: 6px;
  margin-top: 6px;
  margin-bottom: 12px;
}

.receipt-barcode-box {
  text-align: center;
  border-top: 1px solid #e2e8f0;
  padding-top: 8px;
}

.barcode-lines {
  display: flex;
  justify-content: center;
  height: 32px;
  gap: 2px;
  margin-bottom: 4px;
}

.barcode-bar {
  background: #0f172a;
  height: 100%;
}

.receipt-sawtooth {
  width: 100%;
  max-width: 300px;
  height: 8px;
  background-image: linear-gradient(135deg, #080a0f 25%, transparent 25%),
                    linear-gradient(225deg, #080a0f 25%, transparent 25%);
  background-size: 8px 8px;
}

/* ==========================================================================
   FEATURE GRID (BENTO 4 CARDS)
   ========================================================================== */
.section-features {
  padding: 70px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--border-active);
  background: var(--bg-surface-card);
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent-emerald);
}

.feature-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 16px;
}

.feature-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   LEAD MAGNET / DEVELOPER TIER CLAIM
   ========================================================================== */
.section-lead {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.lead-box {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.lead-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-emerald);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.lead-title {
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 8px;
}

.lead-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.lead-form {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.lead-input {
  flex: 1;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}

.lead-input:focus {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 1px var(--accent-emerald);
}

.lead-feedback {
  display: none;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  margin-bottom: 20px;
  line-height: 1.5;
}

.lead-feedback.success {
  display: block;
  background: var(--accent-emerald-bg);
  border: 1px solid var(--accent-emerald-border);
  color: var(--accent-emerald);
}

.lead-feedback.error {
  display: block;
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #f43f5e;
}

.lead-license-result {
  margin-top: 8px;
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px dashed var(--accent-emerald-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: 14px;
}

.lead-guarantees {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

/* ==========================================================================
   PRICING TABLE
   ========================================================================== */
.section-pricing {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  border-color: var(--border-active);
}

.pricing-card.popular {
  border-color: var(--accent-emerald);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.08);
}

.popular-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-emerald);
  color: #0a0d14;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tier-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.tier-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
  min-height: 36px;
}

.tier-price {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.tier-price small {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 4px;
}

.tier-features {
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tier-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.tier-features li span {
  color: var(--accent-emerald);
}

.pricing-note {
  text-align: center;
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: #080a0f;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

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

.essi-card {
  margin-top: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 12px;
}

.essi-logo {
  height: 24px;
  width: auto;
  opacity: 0.9;
}

.essi-text {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

.essi-text a {
  color: var(--text-secondary);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 992px) {
  .hero-title { font-size: 36px; }
  .split-container { grid-template-columns: 1fr; }
  .ide-panel { border-right: none; border-bottom: 1px solid var(--border-subtle); }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero-title { font-size: 28px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .lead-form { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}
/* ==========================================================================
   SUPPORT POLICY & TRANSPARENCY CARD
   ========================================================================== */
.support-policy-card {
  margin-top: 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  text-align: left;
}

.support-policy-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 32px;
}

.support-policy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 820px) {
  .support-policy-grid {
    grid-template-columns: 1fr;
  }
}

.support-column {
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 24px;
}

.support-column.included {
  border-top: 3px solid var(--accent-emerald);
}

.support-column.excluded {
  border-top: 3px solid #f59e0b;
}

.support-column-title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.support-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.support-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.support-list li strong {
  color: var(--text-primary);
  display: block;
  font-size: 13.5px;
  margin-bottom: 2px;
}
/* SVG Icon alignments */
.card-icon svg {
  width: 20px;
  height: 20px;
}

.hero-trust-bar span svg {
  flex-shrink: 0;
}

.tier-features li svg.tier-check {
  flex-shrink: 0;
  margin-top: 2px;
}

.support-column-title svg {
  flex-shrink: 0;
}

.support-list li svg {
  flex-shrink: 0;
  margin-top: 3px;
}

.lead-guarantee span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   QUICKSTART & WORKFLOW SECTION (DEV VS PRODUCTION)
   ========================================================================== */
.quickstart-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-subtle, #1e293b);
  background: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.05) 0%, transparent 70%);
}

.quickstart-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 36px;
}

@media (max-width: 1024px) {
  .quickstart-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .quickstart-grid {
    grid-template-columns: 1fr;
  }
}

.step-card {
  background: var(--bg-surface-card, #111624);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(16, 185, 129, 0.1);
}

.step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.step-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-emerald, #10b981);
  background: rgba(16, 185, 129, 0.12);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.step-title {
  font-size: 16px;
  font-weight: 600;
  color: #f8fafc;
  margin-bottom: 8px;
  line-height: 1.35;
}

.step-desc {
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

.step-btn {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  background: #1e293b;
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.step-btn:hover {
  background: var(--accent-emerald, #10b981);
  color: #000;
  border-color: var(--accent-emerald, #10b981);
}

/* Phase 2: Production Callout */
.production-banner {
  margin-top: 36px;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.7) 0%, rgba(17, 24, 39, 0.85) 100%);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 14px;
  padding: 26px 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.production-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-emerald, #10b981);
}

.production-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.production-title {
  font-size: 18px;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 8px;
}

.production-text {
  font-size: 14px;
  color: #cbd5e1;
  line-height: 1.6;
}

.production-text strong {
  color: #34d399;
}

/* ==========================================================================
   RESPONSIVE NAVBAR RULES
   ========================================================================== */
@media (max-width: 1200px) {
  .brand-sub {
    display: none;
  }
  .nav-links {
    gap: 14px;
  }
  .nav-links a {
    font-size: 13px;
  }
}

@media (max-width: 960px) {
  .navbar {
    height: auto;
    padding: 8px 0;
  }
  .navbar .container {
    flex-wrap: wrap;
    gap: 10px;
    justify-content: space-between;
  }
  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 14px;
    padding-top: 6px;
    border-top: 1px solid var(--border-subtle);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .nav-actions {
    order: 2;
  }
}