/* ==========================================================================
   GATERN - BAUHAUS GEOMETRIC TECHNOLOGY DESIGN SYSTEM
   Set 4: Bauhaus Design + Geometric Composition + Asymmetric Grid
   ========================================================================== */

:root {
  --bg-primary: #F4F0E8;
  --bg-secondary: #FAF7F0;
  --bg-dark: #111111;
  --text-main: #111111;
  --text-muted: #55524D;
  --text-light: #F4F0E8;
  --border-color: #181818;
  --border-light: rgba(244, 240, 232, 0.2);
  
  --accent-red: #E94B35;
  --accent-blue: #2457C5;
  --accent-yellow: #F2C94C;

  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Courier New", Courier, monospace;

  --border-width: 2px;
  --grid-gap: 24px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-main);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.5;
  background-color: var(--bg-primary);
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Structural Line Utility */
.b-border-b { border-bottom: var(--border-width) solid var(--border-color); }
.b-border-t { border-top: var(--border-width) solid var(--border-color); }
.b-border-l { border-left: var(--border-width) solid var(--border-color); }
.b-border-r { border-right: var(--border-width) solid var(--border-color); }
.b-border-all { border: var(--border-width) solid var(--border-color); }

/* Container */
.container {
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Base */
.h1-hero {
  font-size: clamp(3.5rem, 8.5vw, 8rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  color: var(--text-main);
}

.h2-section {
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.h3-title {
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* CTA Buttons */
.btn-bauhaus {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border: var(--border-width) solid var(--border-color);
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
  text-decoration: none;
}

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

.btn-primary-red:hover {
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0px var(--border-color);
}

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

.btn-primary-blue:hover {
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0px var(--border-color);
}

.btn-secondary {
  background-color: var(--bg-primary);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--accent-yellow);
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0px var(--border-color);
}

/* ==========================================================================
   1. HEADER (BAUHAUS GRID NAVIGATION)
   ========================================================================== */
.header-bauhaus {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-primary);
  border-bottom: var(--border-width) solid var(--border-color);
}

.header-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  min-height: 70px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  border-right: var(--border-width) solid var(--border-color);
  background-color: var(--bg-primary);
}

.brand-title {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  color: var(--text-main);
}

.brand-sub {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  background-color: var(--accent-yellow);
  border: 1px solid var(--border-color);
}

.nav-desktop {
  display: flex;
  align-items: stretch;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0 18px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  border-right: var(--border-width) solid var(--border-color);
  transition: background-color 0.15s ease;
}

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

.header-cta-wrap {
  display: flex;
  align-items: center;
  padding: 10px 20px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  padding: 16px;
  font-size: 1.5rem;
  cursor: pointer;
  border-left: var(--border-width) solid var(--border-color);
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  border-bottom: var(--border-width) solid var(--border-color);
  padding: 20px;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 12px 0;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
}

/* ==========================================================================
   2. GEOMETRIC HERO (ASYMMETRIC GEOMETRIC HERO)
   ========================================================================== */
.hero-section {
  position: relative;
  border-bottom: var(--border-width) solid var(--border-color);
  overflow: hidden;
  background-color: var(--bg-primary);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  min-height: 82vh;
}

.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 48px 36px 48px 0;
  border-right: var(--border-width) solid var(--border-color);
}

.hero-top-tag {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-top-tag .dot {
  width: 12px;
  height: 12px;
  background-color: var(--accent-red);
  border-radius: 50%;
  display: inline-block;
  border: 1px solid var(--border-color);
}

.hero-desc {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 24px 0 36px 0;
  font-weight: 500;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: var(--border-width) solid var(--border-color);
}

.metric-num {
  font-size: 1.8rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-main);
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 700;
  margin-top: 4px;
}

/* Right Side Bauhaus Composition */
.hero-right {
  position: relative;
  background-color: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  overflow: hidden;
}

.geometric-hero-art {
  position: relative;
  width: 100%;
  max-width: 500px;
  height: 480px;
}

/* Geometric shapes in composition */
.geo-shape-large-circle {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 280px;
  height: 280px;
  background-color: var(--accent-blue);
  border-radius: 50%;
  border: var(--border-width) solid var(--border-color);
  animation: floatCircle 8s ease-in-out infinite alternate;
}

.geo-shape-red-rect {
  position: absolute;
  bottom: 40px;
  right: 30px;
  width: 240px;
  height: 160px;
  background-color: var(--accent-red);
  border: var(--border-width) solid var(--border-color);
  box-shadow: 6px 6px 0px var(--border-color);
}

.geo-shape-yellow-square {
  position: absolute;
  top: 140px;
  right: 50px;
  width: 110px;
  height: 110px;
  background-color: var(--accent-yellow);
  border: var(--border-width) solid var(--border-color);
}

.geo-shape-arc {
  position: absolute;
  bottom: 120px;
  left: 40px;
  width: 140px;
  height: 70px;
  background-color: var(--bg-primary);
  border-radius: 140px 140px 0 0;
  border: var(--border-width) solid var(--border-color);
}

.geo-shape-line-1 {
  position: absolute;
  top: 160px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--border-color);
}

.geo-shape-line-2 {
  position: absolute;
  top: 0;
  left: 240px;
  width: 2px;
  height: 100%;
  background-color: var(--border-color);
}

/* Functional Labels in Art */
.node-badge {
  position: absolute;
  padding: 6px 12px;
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  box-shadow: 3px 3px 0px var(--border-color);
  z-index: 10;
}

.nb-1 { top: 40px; left: 160px; }
.nb-2 { top: 180px; right: 20px; }
.nb-3 { bottom: 80px; right: 180px; }
.nb-4 { bottom: 160px; left: 80px; }

@keyframes floatCircle {
  0% { transform: translateY(0px) rotate(0deg); }
  100% { transform: translateY(-12px) rotate(3deg); }
}

/* ==========================================================================
   3. PRODUCT PRINCIPLES (BAUHAUS MODULE GRID)
   ========================================================================== */
.section-padding {
  padding: 80px 0;
  border-bottom: var(--border-width) solid var(--border-color);
}

.section-header-wrap {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: var(--border-width) solid var(--border-color);
}

.modules-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--border-width);
  background-color: var(--border-color);
  border: var(--border-width) solid var(--border-color);
}

.module-card {
  background-color: var(--bg-primary);
  padding: 40px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
  transition: background-color 0.2s ease;
}

.module-card:hover {
  background-color: var(--bg-secondary);
}

.module-card.m-red {
  background-color: #FAF2F1;
}

.module-card.m-blue {
  background-color: #F1F4FA;
}

.module-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
}

.module-num {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
  color: var(--border-color);
}

.module-shape-circle {
  width: 50px;
  height: 50px;
  background-color: var(--accent-red);
  border-radius: 50%;
  border: var(--border-width) solid var(--border-color);
}

.module-shape-square {
  width: 48px;
  height: 48px;
  background-color: var(--accent-yellow);
  border: var(--border-width) solid var(--border-color);
}

.module-shape-half {
  width: 50px;
  height: 25px;
  background-color: var(--accent-blue);
  border-radius: 50px 50px 0 0;
  border: var(--border-width) solid var(--border-color);
}

.module-shape-rect {
  width: 60px;
  height: 30px;
  background-color: var(--border-color);
}

.module-content h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.module-content p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.5;
}

.module-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.module-tag-item {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
}

/* ==========================================================================
   4. GLOBAL NETWORK (REGION BLOCKS)
   ========================================================================== */
.regions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: var(--border-width) solid var(--border-color);
  background-color: var(--border-color);
  gap: var(--border-width);
}

.region-block {
  background-color: var(--bg-primary);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
  position: relative;
  overflow: hidden;
}

.region-block.r-asia {
  background-color: var(--accent-blue);
  color: #FFFFFF;
}

.region-block.r-na {
  background-color: var(--accent-red);
  color: #FFFFFF;
}

.region-block.r-eu {
  background-color: var(--accent-yellow);
  color: var(--text-main);
}

.region-block.r-oc {
  background-color: var(--bg-dark);
  color: #FFFFFF;
}

.region-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  z-index: 2;
}

.region-title {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.region-count {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 800;
  padding: 2px 8px;
  border: 1px solid currentColor;
}

.region-list {
  z-index: 2;
  margin-top: 40px;
}

.region-item {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.r-eu .region-item {
  border-bottom-color: rgba(0,0,0,0.15);
}

/* Background Geometric Art inside Region */
.region-bg-art {
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.25);
  pointer-events: none;
}

/* ==========================================================================
   5. DEVICE SUPPORT (DEVICE GRID)
   ========================================================================== */
.devices-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: var(--border-width) solid var(--border-color);
  background-color: var(--border-color);
  gap: var(--border-width);
}

.device-card {
  background-color: var(--bg-primary);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 240px;
  transition: transform 0.2s ease;
}

.device-card:hover {
  background-color: #FFFFFF;
}

.device-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.device-icon-box {
  width: 44px;
  height: 44px;
  border: var(--border-width) solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.2rem;
}

.device-card:nth-child(1) .device-icon-box { background-color: var(--accent-blue); color: white; }
.device-card:nth-child(2) .device-icon-box { background-color: var(--accent-red); color: white; }
.device-card:nth-child(3) .device-icon-box { background-color: var(--accent-yellow); color: black; }
.device-card:nth-child(4) .device-icon-box { background-color: var(--bg-dark); color: white; }

.device-name {
  font-size: 1.6rem;
  font-weight: 800;
  margin-top: 24px;
  text-transform: uppercase;
}

.device-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 600;
}

/* ==========================================================================
   6. AI + STREAMING (SPLIT GEOMETRIC COMPOSITION)
   ========================================================================== */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: var(--border-width) solid var(--border-color);
  background-color: var(--border-color);
  gap: var(--border-width);
}

.split-box {
  background-color: var(--bg-primary);
  padding: 48px;
  position: relative;
}

.split-box.sb-ai {
  border-top: 6px solid var(--accent-red);
}

.split-box.sb-stream {
  border-top: 6px solid var(--accent-blue);
}

.split-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: var(--border-width) solid var(--border-color);
}

.split-title {
  font-size: 2.2rem;
  font-weight: 900;
  text-transform: uppercase;
}

.split-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.split-item-card {
  padding: 16px 20px;
  background-color: #FFFFFF;
  border: var(--border-width) solid var(--border-color);
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 3px 3px 0px var(--border-color);
}

.split-item-card::after {
  content: "→";
  font-family: var(--font-mono);
  font-weight: 900;
}

/* ==========================================================================
   7. PRICING (GEOMETRIC PRICING COMPOSITION)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr 1fr;
  align-items: stretch;
  border: var(--border-width) solid var(--border-color);
  background-color: var(--border-color);
  gap: var(--border-width);
}

.pricing-card {
  background-color: var(--bg-primary);
  padding: 40px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

/* Recommended Plan: PRO in Bauhaus Blue */
.pricing-card.p-recommended {
  background-color: var(--accent-blue);
  color: #FFFFFF;
  transform: scale(1.02);
  z-index: 10;
  border: var(--border-width) solid var(--border-color);
  box-shadow: 8px 8px 0px var(--border-color);
}

.badge-recommended {
  position: absolute;
  top: -16px;
  right: 20px;
  background-color: var(--accent-yellow);
  color: var(--text-main);
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 900;
  border: var(--border-width) solid var(--border-color);
  letter-spacing: 0.05em;
}

.pricing-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 900;
  opacity: 0.6;
}

.pricing-name {
  font-size: 1.8rem;
  font-weight: 900;
  text-transform: uppercase;
  margin-top: 8px;
}

.pricing-sub {
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0.8;
}

.pricing-price-wrap {
  margin: 28px 0;
  padding: 20px 0;
  border-top: 1px solid rgba(0,0,0,0.15);
  border-bottom: 1px solid rgba(0,0,0,0.15);
}

.p-recommended .pricing-price-wrap {
  border-color: rgba(255,255,255,0.25);
}

.pricing-price {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
}

.pricing-traffic {
  font-size: 1.4rem;
  font-weight: 800;
  margin-top: 8px;
  color: var(--accent-red);
}

.p-recommended .pricing-traffic {
  color: var(--accent-yellow);
}

.pricing-features {
  margin-bottom: 32px;
}

.pricing-feature-item {
  font-size: 0.95rem;
  font-weight: 700;
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-feature-item::before {
  content: "■";
  font-size: 0.7rem;
  color: var(--accent-red);
}

.p-recommended .pricing-feature-item::before {
  color: var(--accent-yellow);
}

/* ==========================================================================
   8. SEO ARTICLES (GATERN EDITIONS - EDITORIAL GEOMETRIC GRID)
   ========================================================================== */
.editorial-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  grid-template-rows: auto auto;
  border: var(--border-width) solid var(--border-color);
  background-color: var(--border-color);
  gap: var(--border-width);
}

.article-card-feat {
  grid-row: span 2;
  background-color: var(--bg-primary);
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.article-card {
  background-color: var(--bg-primary);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: background-color 0.15s ease;
}

.article-card:hover, .article-card-feat:hover {
  background-color: #FFFFFF;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.article-title-feat {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.article-title {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 12px;
}

.article-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 24px;
}

.article-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-red);
}

/* Decorative Circle in Featured Article */
.feat-deco-circle {
  width: 90px;
  height: 90px;
  background-color: var(--accent-blue);
  border-radius: 50%;
  border: var(--border-width) solid var(--border-color);
  margin-bottom: 24px;
}

/* ==========================================================================
   9. USER NOTES
   ========================================================================== */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: var(--border-width) solid var(--border-color);
  background-color: var(--border-color);
  gap: var(--border-width);
}

.note-card {
  background-color: var(--bg-primary);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.note-num {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 900;
  color: var(--accent-red);
  line-height: 1;
}

.note-category {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin: 16px 0 12px 0;
  text-transform: uppercase;
}

.note-quote {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-main);
  border-left: 3px solid var(--border-color);
  padding-left: 16px;
  margin-top: 16px;
}

/* ==========================================================================
   10. FAQ (BAUHAUS INDEX ACCORDION)
   ========================================================================== */
.faq-wrap {
  border: var(--border-width) solid var(--border-color);
  background-color: var(--bg-primary);
}

.faq-item {
  border-bottom: var(--border-width) solid var(--border-color);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  cursor: pointer;
  background-color: var(--bg-primary);
  transition: background-color 0.15s ease;
  user-select: none;
}

.faq-header:hover {
  background-color: var(--accent-yellow);
}

.faq-title-wrap {
  display: flex;
  align-items: center;
  gap: 24px;
}

.faq-index {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--accent-red);
}

.faq-question {
  font-size: 1.25rem;
  font-weight: 800;
}

.faq-icon {
  font-size: 1.5rem;
  font-weight: 900;
  width: 32px;
  height: 32px;
  border: var(--border-width) solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #FFFFFF;
}

.faq-body {
  display: none;
  padding: 0 32px 28px 72px;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
  font-weight: 500;
}

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

.faq-item.active .faq-icon {
  background-color: var(--accent-red);
  color: #FFFFFF;
}

/* ==========================================================================
   11. FOOTER (BAUHAUS GEOMETRIC FOOTER)
   ========================================================================== */
.footer-bauhaus {
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-top: var(--border-width) solid var(--border-color);
  padding: 80px 0 40px 0;
}

.footer-top-hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 60px;
}

.footer-giant-title {
  font-size: clamp(4rem, 10vw, 10rem);
  font-weight: 900;
  line-height: 0.85;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.footer-geo-decor {
  display: flex;
  gap: 16px;
  align-items: center;
}

.f-circle {
  width: 60px;
  height: 60px;
  background-color: var(--accent-red);
  border-radius: 50%;
}

.f-rect {
  width: 80px;
  height: 50px;
  background-color: var(--accent-blue);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 900;
  color: var(--accent-yellow);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(244, 240, 232, 0.8);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.15s ease;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 40px;
  border-top: 1px solid var(--border-light);
  font-size: 0.85rem;
  color: rgba(244, 240, 232, 0.6);
}

.related-sites {
  display: flex;
  gap: 20px;
}

.related-sites a {
  color: rgba(244, 240, 232, 0.7);
  text-decoration: underline;
}

.related-sites a:hover {
  color: var(--accent-yellow);
}

/* ==========================================================================
   ARTICLE & EDITORIAL PAGES SPECIFIC STYLES
   ========================================================================== */
.article-page-header {
  padding: 60px 0;
  border-bottom: var(--border-width) solid var(--border-color);
  background-color: var(--bg-secondary);
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-muted);
}

.breadcrumb a { text-decoration: underline; }

.article-content-body {
  max-width: 860px;
  margin: 0 auto;
  padding: 60px 24px;
}

.article-content-body h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin: 40px 0 20px 0;
  padding-bottom: 8px;
  border-bottom: var(--border-width) solid var(--border-color);
}

.article-content-body h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 28px 0 16px 0;
}

.article-content-body p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: #222222;
  margin-bottom: 20px;
}

.article-content-body ul, .article-content-body ol {
  margin: 20px 0 28px 24px;
}

.article-content-body li {
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 10px;
  list-style-type: disc;
}

.article-callout {
  padding: 24px 28px;
  background-color: var(--accent-yellow);
  border: var(--border-width) solid var(--border-color);
  box-shadow: 4px 4px 0px var(--border-color);
  margin: 32px 0;
  font-weight: 600;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   Tested across 375px, 390px, 430px, 768px, 1024px, 1440px
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-left {
    padding: 40px 0;
    border-right: none;
    border-bottom: var(--border-width) solid var(--border-color);
  }

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

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

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

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

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

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

  .article-card-feat {
    grid-row: span 1;
  }

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

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

@media (max-width: 768px) {
  .nav-desktop, .header-cta-wrap {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .h1-hero {
    font-size: clamp(2.8rem, 12vw, 4.5rem);
  }

  .hero-right {
    padding: 24px 12px;
  }

  .geometric-hero-art {
    height: 340px;
  }

  .geo-shape-large-circle {
    width: 200px;
    height: 200px;
  }

  .geo-shape-red-rect {
    width: 160px;
    height: 110px;
  }

  .geo-shape-yellow-square {
    width: 70px;
    height: 70px;
  }

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

  .pricing-card.p-recommended {
    transform: none;
  }

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

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

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

  .footer-top-hero {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

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

  .faq-header {
    padding: 18px 20px;
  }

  .faq-body {
    padding: 0 20px 20px 20px;
  }

  .faq-title-wrap {
    gap: 12px;
  }
}