/* ==========================================================================
   TypeSpend — UI/UX Product Design System
   Principles: Visual Restraint, Extreme Clarity, Value-First, Zero Slop
   ========================================================================== */

:root {
  /* Restrained, Authentic Color Palette */
  --bg-primary: #0D0F12;
  --bg-surface: #14171D;
  --bg-surface-subtle: #1A1E26;
  --bg-surface-elevated: #202530;
  
  --border-subtle: #242934;
  --border-strong: #333A4A;
  --border-focus: #3B82F6;

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --accent-blue: #3B82F6;
  --accent-blue-hover: #2563EB;
  --accent-emerald: #10B981;
  --accent-emerald-soft: rgba(16, 185, 129, 0.12);

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', Menlo, Monaco, Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border-subtle);
  --shadow-elevated: 0 12px 32px -8px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--border-strong);
  
  --transition-fast: 0.15s ease-out;
  --transition-base: 0.25s ease-out;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 24px;
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 10px 18px;
  font-weight: 700;
  font-size: 0.875rem;
  z-index: 9999;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top 0.2s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.skip-link:focus {
  top: 16px;
  outline: 2px solid var(--accent-blue);
}

/* Focused Container */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Clean, Non-Distracting Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 15, 18, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: block;
}

.brand-name {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--text-primary);
  color: var(--bg-primary);
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: opacity var(--transition-fast);
}

.nav-cta:hover {
  opacity: 0.9;
}

/* ==========================================================================
   HERO: Value-First, No Decoration, Clear Job
   ========================================================================== */
.hero {
  padding: 72px 0 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.value-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}

.value-pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
}

.hero-heading {
  font-size: 3.25rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.12;
  margin-bottom: 18px;
  color: var(--text-primary);
}

.hero-heading span {
  color: var(--text-secondary);
}

.hero-subhead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-subhead strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Desktop QR Card — Focused, Clean, Scan-Ready */
.hero-install-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
}

.qr-install-row {
  display: flex;
  align-items: center;
  gap: 20px;
}

.qr-code-wrapper {
  width: 104px;
  height: 104px;
  background: #FFFFFF;
  border-radius: var(--radius-sm);
  padding: 6px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-code-img {
  width: 100%;
  height: 100%;
  display: block;
}

.qr-copy {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.qr-headline {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.qr-description {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.qr-store-links {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.store-link-pill {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-strong);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color var(--transition-fast);
}

.store-link-pill:hover {
  border-color: var(--text-primary);
}

/* Mobile Direct Button (Appears only on mobile) */
.mobile-install-cta {
  display: none;
}

.btn-mobile-download {
  display: block;
  text-align: center;
  background: var(--text-primary);
  color: var(--bg-primary);
  font-size: 1rem;
  font-weight: 700;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  text-decoration: none;
}

/* Key Guarantees */
.hero-guarantees {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.guarantee-item svg {
  color: var(--accent-emerald);
}

/* ==========================================================================
   HERO INTERACTIVE PREVIEW: The "Show, Don't Tell" Experience
   ========================================================================== */
.hero-preview {
  position: relative;
}

.preview-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.preview-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.preview-title {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.preview-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-emerald);
  background: var(--accent-emerald-soft);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

/* Input Simulation */
.preview-input-group {
  margin-bottom: 16px;
}

.preview-input-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.preview-input-box {
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  transition: border-color var(--transition-fast);
}

.preview-input-box:focus-within {
  border-color: var(--accent-blue);
}

.preview-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
}

/* Quick Example Chips */
.preview-chips {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.preview-chip-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.chip-btn {
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* Structured Output Result */
.preview-output {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  min-height: 150px;
}

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.output-total {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-primary);
  font-weight: 700;
}

.output-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.output-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

.output-item-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.output-emoji {
  font-size: 1rem;
}

.output-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.output-category {
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: var(--bg-surface-subtle);
  padding: 1px 6px;
  border-radius: 4px;
}

.output-amount {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.preview-footer-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 14px;
}

/* ==========================================================================
   SECTION: THREE REAL-LIFE ADVANTAGES (Value Pillars)
   ========================================================================== */
.section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.section-head {
  max-width: 600px;
  margin-bottom: 48px;
}

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-lead {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Value Columns */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.value-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.value-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.value-card-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   SECTION: WIDGET (Frictionless Touchpoint)
   ========================================================================== */
.widget-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.widget-preview-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  justify-content: center;
}

.phone-widget-card {
  width: 100%;
  max-width: 320px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-card);
}

.phone-widget-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.phone-widget-app {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.phone-widget-app img {
  width: 18px;
  height: 18px;
  border-radius: 4px;
}

.phone-widget-pill {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-emerald);
  background: var(--accent-emerald-soft);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

.phone-widget-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.phone-widget-spend {
  font-size: 2.25rem;
  font-weight: 800;
  font-family: var(--font-mono);
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.phone-widget-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: var(--text-primary);
  color: var(--bg-primary);
  border: none;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.phone-widget-btn:hover {
  opacity: 0.9;
}

/* ==========================================================================
   SECTION: FAQ (Clear, Honest Answers)
   ========================================================================== */
.faq-container {
  max-width: 760px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-btn {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 20px 22px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
}

.faq-chevron {
  transition: transform var(--transition-base);
  color: var(--text-muted);
  flex-shrink: 0;
}

.faq-card.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--text-primary);
}

.faq-body {
  display: none;
  padding: 0 22px 20px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.faq-card.active .faq-body {
  display: block;
}

/* ==========================================================================
   BOTTOM CTA: Direct and Simple
   ========================================================================== */
.bottom-cta {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  margin: 64px 0;
}

.bottom-cta-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.bottom-cta-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

.bottom-cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--text-primary);
  color: var(--bg-primary);
  font-size: 0.9375rem;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.btn-primary-action:hover {
  opacity: 0.9;
}

.btn-secondary-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: border-color var(--transition-fast);
}

.btn-secondary-action:hover {
  border-color: var(--text-primary);
}

/* ==========================================================================
   FOOTER: Clean & Semantic
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0 36px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* QR Code Dialog Modal */
.qr-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.qr-modal.active {
  display: flex;
}

.qr-modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-elevated);
}

.qr-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}

.qr-modal-close:hover {
  color: var(--text-primary);
}

.qr-modal-qr {
  width: 180px;
  height: 180px;
  background: #FFFFFF;
  border-radius: var(--radius-sm);
  margin: 20px auto;
  padding: 10px;
}

.qr-modal-qr img {
  width: 100%;
  height: 100%;
  display: block;
}

/* ==========================================================================
   SECTION: FEATURES GRID (Comprehensive Money Management)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

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

.feature-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.feature-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.feature-pill {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-emerald);
  background: var(--accent-emerald-soft);
  padding: 3px 8px;
  border-radius: var(--radius-pill);
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.feature-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   SECTION: COMPARISON MATRIX (High-Intent SEO Evaluation)
   ========================================================================== */
.comparison-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-card);
  margin-top: 16px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
  min-width: 680px;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

.comparison-table th {
  background: var(--bg-surface-subtle);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
}

.comparison-table th.col-highlight,
.comparison-table td.col-highlight {
  background: rgba(16, 185, 129, 0.04);
  border-left: 1px solid rgba(16, 185, 129, 0.25);
  border-right: 1px solid rgba(16, 185, 129, 0.25);
}

.comparison-table th.col-highlight {
  color: var(--accent-emerald);
  font-size: 0.875rem;
}

.col-badge {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--accent-emerald);
  color: #000;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-label {
  font-weight: 600;
  color: var(--text-primary);
}

.comp-win {
  color: var(--accent-emerald);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.comp-neutral {
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.comp-loss {
  color: var(--text-muted);
}

/* ==========================================================================
   SECTION: AUDIENCE & USE CASES (Search Intent Personas)
   ========================================================================== */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.usecase-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
}

.usecase-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-blue);
  margin-bottom: 8px;
}

.usecase-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.usecase-text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ==========================================================================
   SEO KEYWORD CLUSTER DIRECTORY (Footer Discovery)
   ========================================================================== */
.seo-topics-section {
  border-top: 1px solid var(--border-subtle);
  padding: 32px 0 0;
  margin-top: 36px;
}

.seo-topics-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.seo-topics-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.seo-topic-pill {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

/* ==========================================================================
   DESKTOP / MOBILE UTILITIES & SPECIFIC BLOCKS
   ========================================================================== */
.desktop-only {
  display: block;
}

.desktop-only-table {
  display: block;
}

.mobile-hero-actions {
  display: none;
}

.mobile-comparison-cards {
  display: none;
}

.mobile-sticky-bar {
  display: none;
}

/* ==========================================================================
   RESPONSIVE DESIGN (Senior Mobile-First UX Architecture)
   ========================================================================== */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

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

  .widget-split {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-heading {
    font-size: 2.25rem;
  }
}

@media (max-width: 768px) {
  body {
    padding-bottom: 76px; /* Space for fixed bottom install bar */
  }

  .container {
    padding: 0 16px;
  }

  .nav-inner {
    height: 54px;
  }

  .nav-links {
    display: none;
  }

  .nav-cta {
    padding: 6px 14px;
    font-size: 0.75rem;
  }

  /* Compact Hero */
  .hero {
    padding: 24px 0 20px;
  }

  .hero-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .value-pill {
    font-size: 0.6875rem;
    padding: 3px 10px;
    margin-bottom: 10px;
  }

  .hero-heading {
    font-size: 1.625rem;
    line-height: 1.22;
    letter-spacing: -0.03em;
    margin-bottom: 10px;
  }

  .hero-subhead {
    font-size: 0.875rem;
    line-height: 1.45;
    margin-bottom: 16px;
  }

  /* Desktop elements hidden on mobile */
  .desktop-only {
    display: none !important;
  }

  .desktop-only-table {
    display: none !important;
  }

  /* Mobile Hero Action Bar (Above the fold) */
  .mobile-hero-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
  }

  .btn-mobile-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    background: #FFFFFF;
    color: #000000;
    font-size: 0.9375rem;
    font-weight: 700;
    padding: 13px 18px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(255, 255, 255, 0.12);
    transition: opacity var(--transition-fast);
  }

  .btn-mobile-download:active {
    opacity: 0.85;
  }

  .mobile-store-row {
    display: flex;
    gap: 8px;
    width: 100%;
  }

  .mobile-store-pill {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: border-color var(--transition-fast);
  }

  .mobile-store-pill:active {
    border-color: var(--text-primary);
  }

  .mobile-trust-strip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.6875rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-top: 4px;
    flex-wrap: wrap;
  }

  .dot-sep {
    color: var(--border-strong);
  }

  /* Interactive Preview Card on Mobile */
  .hero-preview {
    width: 100%;
  }

  .preview-card {
    padding: 16px;
    border-radius: var(--radius-md);
  }

  .preview-top-bar {
    margin-bottom: 12px;
    padding-bottom: 8px;
  }

  .preview-title {
    font-size: 0.75rem;
  }

  .preview-input-group {
    margin-bottom: 12px;
  }

  .preview-input-box {
    padding: 10px 12px;
  }

  .preview-input {
    font-size: 0.875rem;
  }

  .preview-chips {
    gap: 6px;
    margin-bottom: 12px;
  }

  .preview-chip-label {
    display: none;
  }

  .chip-btn {
    padding: 4px 8px;
    font-size: 0.6875rem;
  }

  .preview-output {
    padding: 10px;
    min-height: auto;
  }

  .output-header {
    font-size: 0.6875rem;
    margin-bottom: 8px;
  }

  .output-item {
    padding: 7px 10px;
  }

  .output-name {
    font-size: 0.75rem;
  }

  .output-category {
    font-size: 0.625rem;
    padding: 1px 4px;
  }

  .output-amount {
    font-size: 0.8125rem;
  }

  .preview-footer-note {
    font-size: 0.6875rem;
    margin-top: 10px;
  }

  /* Compact Sections */
  .section {
    padding: 44px 0;
  }

  .section-head {
    margin-bottom: 24px;
  }

  .section-eyebrow {
    font-size: 0.6875rem;
    margin-bottom: 6px;
  }

  .section-title {
    font-size: 1.375rem;
    line-height: 1.25;
    margin-bottom: 8px;
  }

  .section-lead {
    font-size: 0.875rem;
    line-height: 1.5;
  }

  /* Value Cards */
  .value-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .value-card {
    padding: 20px;
    border-radius: var(--radius-md);
  }

  .value-card-icon {
    width: 34px;
    height: 34px;
    margin-bottom: 14px;
  }

  .value-card-title {
    font-size: 1rem;
    margin-bottom: 6px;
  }

  .value-card-text {
    font-size: 0.8125rem;
  }

  /* Features Grid on Mobile */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .feature-card {
    padding: 18px 16px;
    border-radius: var(--radius-md);
  }

  .feature-top {
    margin-bottom: 12px;
  }

  .feature-icon {
    width: 32px;
    height: 32px;
  }

  .feature-title {
    font-size: 1rem;
    margin-bottom: 6px;
  }

  .feature-text {
    font-size: 0.8125rem;
  }

  /* Mobile Comparison Cards */
  .mobile-comparison-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
  }

  .comp-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 14px 16px;
  }

  .comp-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
  }

  .comp-card-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
  }

  .comp-badge-win {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--accent-emerald);
    background: var(--accent-emerald-soft);
    padding: 2px 8px;
    border-radius: var(--radius-pill);
  }

  .comp-card-desc {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.45;
  }

  /* Use Cases Grid on Mobile */
  .usecases-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .usecase-card {
    padding: 18px 16px;
  }

  /* Widget Preview on Mobile */
  .widget-preview-box {
    padding: 16px;
  }

  .phone-widget-card {
    padding: 18px 16px;
  }

  .phone-widget-spend {
    font-size: 1.875rem;
    margin-bottom: 16px;
  }

  /* FAQ on Mobile */
  .faq-btn {
    padding: 16px 18px;
    font-size: 0.9375rem;
  }

  .faq-body {
    padding: 0 18px 16px;
    font-size: 0.875rem;
  }

  /* Bottom CTA */
  .bottom-cta {
    padding: 32px 18px;
    margin: 40px 0 20px;
  }

  .bottom-cta-title {
    font-size: 1.5rem;
    line-height: 1.25;
  }

  .bottom-cta-sub {
    font-size: 0.875rem;
    margin-bottom: 20px;
  }

  .btn-primary-action, .btn-secondary-action {
    width: 100%;
    justify-content: center;
  }

  /* Footer */
  .footer {
    padding: 36px 0 30px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

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

  /* Fixed Mobile Sticky Install Bar */
  .mobile-sticky-bar {
    display: block;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(13, 15, 18, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border-strong);
    padding: 10px 16px calc(10px + env(safe-area-inset-bottom, 0px));
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
  }

  .mobile-sticky-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    max-width: 500px;
    margin: 0 auto;
  }

  .mobile-sticky-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  }

  .mobile-sticky-meta {
    flex: 1;
    min-width: 0;
  }

  .mobile-sticky-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.2;
  }

  .mobile-sticky-sub {
    font-size: 0.6875rem;
    color: var(--text-muted);
    line-height: 1.2;
  }

  .mobile-sticky-btn {
    background: #FFFFFF;
    color: #000000;
    font-size: 0.8125rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    flex-shrink: 0;
    transition: opacity var(--transition-fast);
  }

  .mobile-sticky-btn:active {
    opacity: 0.85;
  }
}

/* Ultra-Narrow Mobile Devices (<= 360px, e.g. iPhone SE / 320px viewport) */
@media (max-width: 360px) {
  .container {
    padding: 0 12px;
  }

  .hero-heading {
    font-size: 1.35rem;
  }

  .hero-subhead {
    font-size: 0.8125rem;
  }

  .mobile-store-pill {
    padding: 8px 8px;
    font-size: 0.6875rem;
  }

  .btn-mobile-download {
    font-size: 0.875rem;
    padding: 11px 14px;
  }

  .phone-widget-spend {
    font-size: 1.625rem;
  }
}