/* ==========================================================================
   Gatern - Japanese Zen Technology (Set #5)
   Design System & Master Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & CSS Variables
   -------------------------------------------------------------------------- */
:root {
  /* Palette */
  --bg-main: #F7F6F1;
  --bg-warm: #FBFAF7;
  --bg-sub: #EFEDE6;
  --bg-card: #FAF9F5;
  --bg-dark: #1E2421;
  
  --text-main: #1E211F;
  --text-body: #4A4F4B;
  --text-sub: #767C77;
  --text-muted: #9DA39E;
  --text-light: #F7F6F1;

  --border-light: #DADDD7;
  --border-subtle: #E6E8E2;
  --border-dark: #323A36;

  --accent-indigo: #29465B;
  --accent-indigo-hover: #1D3343;
  --accent-ink: #2D3331;
  --accent-green: #7E9183;
  --accent-beige: #C9BDAA;
  --accent-soft-bg: rgba(41, 70, 91, 0.05);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "YuGothic", "Cascadia Code", "Courier New", monospace;

  /* Spacing */
  --section-padding-desktop: 140px;
  --section-padding-mobile: 80px;
  --container-max-width: 1240px;

  /* Component Properties */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-base: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.02);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-main);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }

p {
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

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

ul, ol {
  list-style: none;
}

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

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

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

.section {
  padding-top: var(--section-padding-desktop);
  padding-bottom: var(--section-padding-desktop);
  position: relative;
}

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

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

/* Editorial Sub-headers & Badges */
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-indigo);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--accent-green);
  border-radius: 50%;
}

.divider-line {
  width: 100%;
  height: 1px;
  background-color: var(--border-light);
  margin: 0;
}

/* Button Component Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent-indigo);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--accent-indigo-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  padding-left: 0;
  padding-right: 0;
  border-bottom: 1px solid var(--text-main);
  border-radius: 0;
}

.btn-secondary:hover {
  color: var(--accent-indigo);
  border-bottom-color: var(--accent-indigo);
}

.btn-outline {
  border: 1px solid var(--border-light);
  color: var(--text-main);
  background-color: transparent;
}

.btn-outline:hover {
  border-color: var(--accent-indigo);
  color: var(--accent-indigo);
  background-color: var(--bg-warm);
}

/* --------------------------------------------------------------------------
   3. Header Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(247, 246, 241, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-base);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-main);
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--text-sub);
  padding: 2px 6px;
  background-color: var(--bg-sub);
  border: 1px solid var(--border-light);
  border-radius: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.875rem;
  color: var(--text-body);
  position: relative;
}

.nav-link:hover {
  color: var(--accent-indigo);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 16px;
}

.mobile-toggle span {
  width: 100%;
  height: 1.5px;
  background-color: var(--text-main);
  transition: var(--transition-base);
}

/* --------------------------------------------------------------------------
   4. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 100px;
  padding-bottom: 120px;
  background-color: var(--bg-main);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 680px;
}

.hero-title {
  font-size: clamp(3rem, 5.5vw, 5.5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-main);
  margin-bottom: 28px;
}

.hero-title span {
  color: var(--accent-indigo);
  display: block;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Minimal SVG Network Graphic */
.hero-visual {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.network-box {
  width: 100%;
  max-width: 380px;
  background-color: var(--bg-warm);
  border: 1px solid var(--border-light);
  padding: 32px;
  border-radius: var(--radius-sm);
  position: relative;
}

.network-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-sub);
}

.network-nodes-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
}

.node-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

.node-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
}

.node-dot.pulse {
  animation: pulse-dot 2.5s infinite;
}

@keyframes pulse-dot {
  0% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.2); }
  100% { opacity: 0.4; transform: scale(0.9); }
}

.node-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-sub);
}

.network-connection-line {
  position: absolute;
  left: 3px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background-color: var(--border-light);
  z-index: 0;
}

/* --------------------------------------------------------------------------
   5. Product Philosophy (Editorial Rows)
   -------------------------------------------------------------------------- */
.philosophy-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.philosophy-item {
  display: grid;
  grid-template-columns: 100px 1fr 2fr;
  gap: 40px;
  padding: 48px 0;
  border-bottom: 1px solid var(--border-light);
  align-items: baseline;
  transition: var(--transition-base);
}

.philosophy-item:first-child {
  border-top: 1px solid var(--border-light);
}

.philosophy-item:hover {
  background-color: rgba(239, 237, 230, 0.4);
}

.philosophy-num {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--accent-indigo);
}

.philosophy-title {
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--text-main);
}

.philosophy-desc {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   6. Global Region Index
   -------------------------------------------------------------------------- */
.region-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 60px;
}

.region-block {
  display: flex;
  flex-direction: column;
}

.region-heading {
  font-size: 1.125rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--accent-indigo);
  margin-bottom: 24px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent-indigo);
  display: inline-block;
}

.region-list {
  display: flex;
  flex-direction: column;
}

.region-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-base);
}

.region-item:hover {
  padding-left: 8px;
  color: var(--accent-indigo);
}

.region-name {
  font-size: 1rem;
  font-weight: 400;
}

.region-code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-sub);
}

/* --------------------------------------------------------------------------
   7. Device Index & Dual Column AI / Streaming
   -------------------------------------------------------------------------- */
.device-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.device-card {
  padding: 32px 24px;
  background-color: var(--bg-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
}

.device-card:hover {
  border-color: var(--accent-indigo);
  transform: translateY(-2px);
}

.device-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-sub);
  margin-bottom: 16px;
}

.device-name {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-main);
  margin-bottom: 8px;
}

.device-type {
  font-size: 0.8125rem;
  color: var(--accent-green);
  font-family: var(--font-mono);
}

/* Dual Column AI / Streaming */
.dual-column-grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 60px;
  align-items: start;
}

.column-divider {
  height: 100%;
  background-color: var(--border-light);
}

.calm-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.calm-list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background-color: var(--bg-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
}

.calm-list-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-indigo);
  min-width: 24px;
}

/* --------------------------------------------------------------------------
   8. Zen Pricing (Editorial List Layout)
   -------------------------------------------------------------------------- */
.pricing-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.pricing-row {
  display: grid;
  grid-template-columns: 240px 180px 1fr 180px;
  gap: 32px;
  align-items: center;
  padding: 36px 40px;
  background-color: var(--bg-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
  position: relative;
}

.pricing-row:hover {
  border-color: var(--text-main);
  box-shadow: var(--shadow-subtle);
}

.pricing-row.recommended {
  border-color: var(--accent-indigo);
  background-color: #FAFBFD;
}

.pricing-row.recommended::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--accent-indigo);
  border-top-left-radius: var(--radius-sm);
  border-bottom-left-radius: var(--radius-sm);
}

.pricing-title-box {
  display: flex;
  flex-direction: column;
}

.pricing-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--accent-indigo);
  background-color: rgba(41, 70, 91, 0.08);
  padding: 2px 8px;
  border-radius: 2px;
  margin-bottom: 8px;
  width: fit-content;
}

.pricing-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-sub);
  margin-bottom: 4px;
}

.pricing-name {
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--text-main);
}

.pricing-name-sub {
  font-size: 0.8125rem;
  color: var(--text-sub);
}

.pricing-price-box {
  display: flex;
  flex-direction: column;
}

.pricing-price {
  font-size: 2rem;
  font-weight: 500;
  color: var(--text-main);
  line-height: 1;
}

.pricing-price-unit {
  font-size: 0.8125rem;
  color: var(--text-sub);
  margin-top: 4px;
}

.pricing-features-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pricing-bandwidth {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent-indigo);
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 0.8125rem;
  color: var(--text-body);
}

.pricing-action-box {
  display: flex;
  justify-content: flex-end;
}

/* --------------------------------------------------------------------------
   9. Gatern Notes / SEO Journal Section
   -------------------------------------------------------------------------- */
.journal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.journal-featured {
  display: flex;
  flex-direction: column;
  padding: 40px;
  background-color: var(--bg-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  height: 100%;
}

.journal-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-indigo);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.journal-featured-title {
  font-size: 1.75rem;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 16px;
}

.journal-featured-title a:hover {
  color: var(--accent-indigo);
}

.journal-featured-excerpt {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 32px;
}

.journal-list {
  display: flex;
  flex-direction: column;
}

.journal-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.journal-item:first-child {
  padding-top: 0;
}

.journal-item-title {
  font-size: 1.0625rem;
  font-weight: 500;
}

.journal-item-title a:hover {
  color: var(--accent-indigo);
}

.journal-item-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-sub);
}

/* --------------------------------------------------------------------------
   10. Quiet User Notes & FAQ Accordion
   -------------------------------------------------------------------------- */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.note-card {
  padding: 32px;
  background-color: var(--bg-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
}

.note-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-indigo);
  margin-bottom: 16px;
}

.note-tag {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-main);
  margin-bottom: 12px;
}

.note-text {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-light);
}

.faq-item:first-child {
  border-top: 1px solid var(--border-light);
}

.faq-button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  text-align: left;
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-main);
  gap: 20px;
}

.faq-button:hover {
  color: var(--accent-indigo);
}

.faq-num {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-sub);
  margin-right: 12px;
}

.faq-icon {
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--text-sub);
  transition: transform 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--accent-indigo);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.8;
  max-width: 800px;
}

.faq-item.active .faq-content {
  max-height: 400px;
  padding-bottom: 24px;
}

/* --------------------------------------------------------------------------
   11. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--bg-sub);
  border-top: 1px solid var(--border-light);
  padding-top: 100px;
  padding-bottom: 60px;
  color: var(--text-body);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 80px;
}

.footer-brand-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.footer-brand-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-indigo);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.footer-brand-desc {
  font-size: 0.875rem;
  color: var(--text-sub);
  max-width: 320px;
  line-height: 1.7;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-main);
  margin-bottom: 24px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.footer-links a:hover {
  color: var(--accent-indigo);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
  font-size: 0.8125rem;
  color: var(--text-sub);
}

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

/* --------------------------------------------------------------------------
   12. SEO Article Layout Styles (For article pages)
   -------------------------------------------------------------------------- */
.article-header {
  padding-top: 80px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-light);
  background-color: var(--bg-warm);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-sub);
  margin-bottom: 24px;
}

.breadcrumb a:hover {
  color: var(--accent-indigo);
}

.article-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.2;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.875rem;
  color: var(--text-sub);
  font-family: var(--font-mono);
}

.article-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 60px;
  padding-top: 60px;
  padding-bottom: 100px;
}

.article-content {
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--text-body);
}

.article-content h2 {
  font-size: 1.75rem;
  margin-top: 48px;
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.article-content h3 {
  font-size: 1.35rem;
  margin-top: 32px;
  margin-bottom: 16px;
}

.article-content p {
  margin-bottom: 24px;
}

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

.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }

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

.article-content blockquote {
  border-left: 3px solid var(--accent-indigo);
  padding: 16px 24px;
  background-color: var(--bg-warm);
  margin-bottom: 24px;
  font-style: italic;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.sidebar-box {
  padding: 28px;
  background-color: var(--bg-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

/* --------------------------------------------------------------------------
   13. Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --section-padding-desktop: 100px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    justify-content: flex-start;
  }

  .philosophy-item {
    grid-template-columns: 80px 1fr;
  }

  .philosophy-desc {
    grid-column: 1 / -1;
  }

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

  .dual-column-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .column-divider {
    display: none;
  }

  .pricing-row {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .pricing-action-box {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .article-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding-desktop: 72px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--bg-warm);
    border-bottom: 1px solid var(--border-light);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    align-items: flex-start;
  }

  .nav-menu.active {
    display: flex;
  }

  .mobile-toggle {
    display: flex;
  }

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

  .pricing-row {
    grid-template-columns: 1fr;
    padding: 28px 24px;
  }

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

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

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

@media (max-width: 430px) {
  .hero-title {
    font-size: 2.5rem;
  }

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

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

  .btn {
    width: 100%;
  }
}