/* ==========================================================================
   Easebox Design System & Stylesheet (easebox.app)
   ========================================================================== */

/* --------------------------------------------------------------------------
   2.2 Design Tokens / CSS Variables
   -------------------------------------------------------------------------- */
:root {
  /* Backgrounds */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-subtle: #F1F5F9;
  --bg-dark: #0F172A;
  --bg-dark-card: #1E293B;

  /* Neutral / Text */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-inverse: #F8FAFC;
  --text-inverse-muted: #94A3B8;

  /* Brand Primary */
  --brand-primary: #4F46E5;
  --brand-primary-hover: #4338CA;
  --brand-primary-soft: #EEF2FF;
  --brand-primary-border: #C7D2FE;

  /* Status Colors */
  --status-live-text: #059669;
  --status-live-bg: #ECFDF5;
  --status-live-dot: #10B981;
  --status-live-border: #A7F3D0;

  --status-dev-text: #2563EB;
  --status-dev-bg: #EFF6FF;
  --status-dev-dot: #3B82F6;
  --status-dev-border: #BFDBFE;

  --status-soon-text: #64748B;
  --status-soon-bg: #F1F5F9;
  --status-soon-dot: #94A3B8;
  --status-soon-border: #E2E8F0;

  /* Borders & Shadows */
  --border-default: #E2E8F0;
  --border-hover: #CBD5E1;
  --border-dark: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.06);

  /* Layout & Typography */
  --container-max-width: 1120px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --------------------------------------------------------------------------
   Container & Section Spacing
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding-top: 80px;
  padding-bottom: 80px;
}

@media (min-width: 768px) {
  .section {
    padding-top: 104px;
    padding-bottom: 104px;
  }
}

.section-secondary {
  background-color: var(--bg-secondary);
}

.section-dark {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

/* --------------------------------------------------------------------------
   Typography Rules (Section 2.3)
   -------------------------------------------------------------------------- */
h1, .h1 {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

h2, .h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.125rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-dark h2 {
  color: var(--text-inverse);
}

h3, .h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-primary);
}

.section-dark h3 {
  color: var(--text-inverse);
}

p, li {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-secondary);
}

.lead {
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-secondary);
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.section-header .section-badge {
  margin-bottom: 14px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header .section-desc-ja {
  margin-top: 8px;
  font-size: 1.05rem;
}

/* --------------------------------------------------------------------------
   Components: Badges & Pills (Section 2.4)
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 9999px;
  padding: 4px 10px;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.badge-live {
  background-color: var(--status-live-bg);
  color: var(--status-live-text);
  border: 1px solid var(--status-live-border);
}
.badge-live .badge-dot {
  background-color: var(--status-live-dot);
}

.badge-dev {
  background-color: var(--status-dev-bg);
  color: var(--status-dev-text);
  border: 1px solid var(--status-dev-border);
}
.badge-dev .badge-dot {
  background-color: var(--status-dev-dot);
}

.badge-soon {
  background-color: var(--status-soon-bg);
  color: var(--status-soon-text);
  border: 1px solid var(--status-soon-border);
}
.badge-soon .badge-dot {
  background-color: var(--status-soon-dot);
}

.badge-brand {
  background-color: var(--brand-primary-soft);
  color: var(--brand-primary);
  border: 1px solid var(--brand-primary-border);
}

.badge-pill-hero {
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
  padding: 6px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-sm);
}

/* --------------------------------------------------------------------------
   Components: Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 8px;
  transition: all var(--transition-fast);
  text-align: center;
  line-height: 1.25;
}

.btn-primary {
  background-color: var(--brand-primary);
  color: #FFFFFF;
  box-shadow: 0 1px 2px rgba(79, 70, 229, 0.2);
}

.btn-primary:hover {
  background-color: var(--brand-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.btn-shopify {
  background-color: #008060;
  color: #FFFFFF;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 128, 96, 0.2);
}

.btn-shopify:hover {
  background-color: #006e52;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 128, 96, 0.25);
}

/* --------------------------------------------------------------------------
   Navigation Header (Section 2.4)
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  background-color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-default);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1875rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-logo svg {
  width: 28px;
  height: 28px;
}

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

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 4px;
  position: relative;
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 6px;
  color: var(--text-primary);
}

@media (max-width: 820px) {
  .mobile-menu-toggle {
    display: block;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-default);
    box-shadow: var(--shadow-lg);
  }
  .nav-menu.is-active {
    display: flex;
  }
}

/* --------------------------------------------------------------------------
   Hero Section (Section 3.1 ①)
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 72px;
  padding-bottom: 80px;
  text-align: center;
}

@media (min-width: 768px) {
  .hero-section {
    padding-top: 100px;
    padding-bottom: 104px;
  }
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
}

.hero-pill-wrap {
  margin-bottom: 24px;
}

.hero-title {
  margin-bottom: 20px;
}

.hero-subtitle-ja {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.hero-statement-en {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.hero-statement-ja {
  font-size: 0.9688rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 36px;
}

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

/* --------------------------------------------------------------------------
   Featured Product: Easecart (Section 3.1 ②)
   -------------------------------------------------------------------------- */
.featured-section {
  border-top: 1px solid var(--border-default);
  border-bottom: 1px solid var(--border-default);
  background-color: var(--bg-secondary);
}

.featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

@media (min-width: 992px) {
  .featured-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }
}

.featured-content {
  display: flex;
  flex-direction: column;
}

.featured-badge-wrap {
  margin-bottom: 14px;
}

.featured-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.featured-tagline-en {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--brand-primary);
  line-height: 1.4;
  margin-bottom: 8px;
}

.featured-tagline-ja {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
}

.featured-features-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.feature-icon-box {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background-color: var(--brand-primary-soft);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-icon-box svg {
  width: 18px;
  height: 18px;
}

.feature-text h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.feature-text p.en {
  font-size: 0.9063rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.feature-text p.ja {
  font-size: 0.8438rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.featured-cta-box {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.featured-cta-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.featured-sublinks {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.featured-sublinks a {
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--brand-primary);
}

.featured-sublinks a:hover {
  color: var(--brand-primary-hover);
}

/* --------------------------------------------------------------------------
   Cart Drawer UI Mockup Card
   -------------------------------------------------------------------------- */
.cart-mockup-wrapper {
  position: relative;
}

.cart-mockup-card {
  background-color: #FFFFFF;
  border-radius: 16px;
  border: 1px solid var(--border-default);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.cart-mockup-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 25px 35px -5px rgba(0, 0, 0, 0.12), 0 10px 12px -6px rgba(0, 0, 0, 0.08);
}

.cart-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #FAFAFA;
}

.cart-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.cart-badge-count {
  background-color: var(--text-primary);
  color: #FFFFFF;
  border-radius: 9999px;
  padding: 2px 7px;
  font-size: 0.75rem;
  font-weight: 600;
}

.cart-close-btn {
  color: var(--text-muted);
  font-size: 1.125rem;
  padding: 2px 6px;
  border-radius: 4px;
}

/* Easecart Free Shipping Bar inside Mockup */
.easecart-bar-container {
  padding: 16px 20px;
  background-color: #F8FAFC;
  border-bottom: 1px solid var(--border-default);
}

.easecart-bar-message {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.easecart-bar-highlight {
  color: var(--status-live-text);
  font-weight: 700;
}

.easecart-progress-track {
  width: 100%;
  height: 8px;
  background-color: #E2E8F0;
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
}

.easecart-progress-fill {
  height: 100%;
  width: 85%;
  background: linear-gradient(90deg, #10B981, #059669);
  border-radius: 9999px;
  transition: width 0.4s ease;
  position: relative;
}

.easecart-progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.4) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  animation: barShimmer 2.5s infinite;
}

@keyframes barShimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Mockup Items List */
.cart-items-list {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-bottom: 1px solid var(--border-default);
}

.cart-item {
  display: flex;
  gap: 12px;
  align-items: center;
}

.item-thumb {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.item-info {
  flex: 1;
}

.item-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.item-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.item-price {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Smart Gap-Fill Upsell Component */
.cart-upsell-box {
  padding: 14px 20px;
  background-color: #F0FDF4;
  border-bottom: 1px solid #DCFCE7;
}

.upsell-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.upsell-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #166534;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.upsell-subtext {
  font-size: 0.75rem;
  color: #15803D;
  font-weight: 500;
}

.upsell-card-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #FFFFFF;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid #BBF7D0;
  gap: 10px;
}

.upsell-item-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.upsell-thumb {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background-color: #DCFCE7;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.upsell-item-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.upsell-item-price {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--brand-primary);
}

.btn-upsell-add {
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  background-color: var(--status-live-text);
  color: #FFFFFF;
  border-radius: 6px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-upsell-add:hover {
  background-color: #047857;
  transform: scale(1.02);
}

/* Cart Footer inside Mockup */
.cart-footer-mockup {
  padding: 16px 20px;
  background-color: #FAFAFA;
}

.cart-subtotal-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.cart-subtotal-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.cart-subtotal-val {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
}

.cart-checkout-btn-mockup {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  background-color: var(--text-primary);
  color: #FFFFFF;
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* --------------------------------------------------------------------------
   Product Suite Grid (Section 3.1 ③)
   -------------------------------------------------------------------------- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
  position: relative;
}

.product-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.product-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.product-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background-color: var(--brand-primary-soft);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-icon-wrap svg {
  width: 24px;
  height: 24px;
}

.product-index-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.product-category {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--brand-primary);
  margin-bottom: 6px;
}

.product-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.product-desc-en {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.product-desc-ja {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-muted);
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   Our Philosophy Section (Section 3.1 ④)
   -------------------------------------------------------------------------- */
.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 900px) {
  .philosophy-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.philosophy-card {
  background-color: var(--bg-dark-card);
  border: 1px solid var(--border-dark);
  border-radius: 16px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.philosophy-card:hover {
  transform: translateY(-2px);
  border-color: #475569;
}

.philosophy-num {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--brand-primary-border);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.philosophy-card h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
  line-height: 1.35;
}

.philosophy-text-en {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: #CBD5E1;
  margin-bottom: 14px;
}

.philosophy-text-ja {
  font-size: 0.875rem;
  line-height: 1.7;
  color: #94A3B8;
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   Footer (Section 2.4)
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-default);
  padding-top: 56px;
  padding-bottom: 56px;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-brand {
  max-width: 380px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.footer-logo svg {
  width: 24px;
  height: 24px;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-links-group {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.footer-col h5 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-nav a:hover {
  color: var(--brand-primary);
}

/* --------------------------------------------------------------------------
   Document & Legal Pages (Privacy, Terms, Support)
   -------------------------------------------------------------------------- */
.doc-hero {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-default);
  padding: 48px 0 40px 0;
  text-align: center;
}

.doc-hero h1 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 10px;
}

.doc-hero-sub {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.doc-container {
  width: 100%;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  padding: 48px 24px 96px 24px;
}

/* Language Quick Jump Navigation */
.lang-jump-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 16px;
}

.lang-jump-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 9999px;
  background-color: #FFFFFF;
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.lang-jump-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateY(-1px);
}

.lang-jump-btn.active {
  background-color: var(--brand-primary-soft);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

/* Legal Document Styles */
.doc-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-default);
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 48px;
}

@media (max-width: 640px) {
  .doc-card {
    padding: 24px 20px;
  }
}

.doc-meta-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 32px;
  font-size: 0.875rem;
  line-height: 1.65;
}

.doc-meta-box p {
  font-size: 0.875rem;
  margin-bottom: 4px;
  color: var(--text-secondary);
}

.doc-meta-box p:last-child {
  margin-bottom: 0;
}

.doc-meta-box strong {
  color: var(--text-primary);
}

.doc-article {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.doc-article h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 36px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-default);
}

.doc-article h2:first-of-type {
  margin-top: 0;
}

.doc-article h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 24px;
  margin-bottom: 10px;
}

.doc-article p {
  margin-bottom: 16px;
}

.doc-article ul, .doc-article ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.doc-article li {
  margin-bottom: 8px;
}

.doc-article code {
  background-color: var(--bg-subtle);
  color: var(--brand-primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.875em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.doc-article strong {
  color: var(--text-primary);
}

.doc-divider {
  border: 0;
  height: 1px;
  background-color: var(--border-default);
  margin: 56px 0;
}

/* Support Page Styles */
.support-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 48px;
}

@media (min-width: 640px) {
  .support-contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.support-info-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.support-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background-color: var(--brand-primary-soft);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.support-info-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.support-info-content p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.support-tip-card {
  background-color: #F0FDF4;
  border: 1px solid #BBF7D0;
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 56px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.support-tip-icon {
  color: var(--status-live-text);
  flex-shrink: 0;
  margin-top: 2px;
}

.support-tip-content h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #166534;
  margin-bottom: 6px;
}

.support-tip-content p.en {
  font-size: 0.875rem;
  color: #14532D;
  line-height: 1.6;
  margin-bottom: 6px;
}

.support-tip-content p.ja {
  font-size: 0.8125rem;
  color: #15803D;
  line-height: 1.6;
}

/* FAQ Accordion / Cards */
.faq-header {
  margin-bottom: 28px;
}

.faq-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.faq-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-default);
  border-radius: 14px;
  padding: 28px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.faq-question-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.faq-q-badge {
  background-color: var(--brand-primary);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-top: 2px;
  flex-shrink: 0;
}

.faq-question-ja {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
  margin-left: 36px;
}

.faq-answer-en {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 10px;
  margin-left: 36px;
}

.faq-answer-ja {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-left: 36px;
  background-color: var(--bg-subtle);
  padding: 12px 16px;
  border-radius: 8px;
}

/* --------------------------------------------------------------------------
   Automatic Language Switching & Toggle Component
   -------------------------------------------------------------------------- */
[data-user-lang="en"] [data-lang="ja"] {
  display: none !important;
}

[data-user-lang="ja"] [data-lang="en"] {
  display: none !important;
}

.lang-switcher-wrap {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-default);
  border-radius: 9999px;
  padding: 2px;
  gap: 2px;
}

.lang-switch-btn {
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 9999px;
  color: var(--text-secondary);
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  line-height: 1;
}

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

.lang-switch-btn.is-active {
  background-color: #FFFFFF;
  color: var(--brand-primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}