@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  --color-primary: hsl(222, 100%, 45%); /* Nakatsu Blue */
  --color-primary-light: hsl(222, 100%, 58%);
  --color-primary-dark: hsl(222, 100%, 32%);
  --color-secondary: hsl(222, 30%, 20%); /* Corporate Charcoal Navy */
  --color-secondary-light: hsl(222, 30%, 30%);
  --color-secondary-dark: hsl(222, 30%, 12%);
  --color-dark: hsl(220, 15%, 8%);
  --color-dark-surface: hsl(220, 15%, 12%);
  --color-light: hsl(210, 40%, 98%);
  --color-light-surface: hsl(0, 0%, 100%);
  --color-text-dark: hsl(220, 15%, 15%);
  --color-text-muted: hsl(220, 10%, 50%);
  --color-border: hsl(210, 14%, 90%);
  --font-heading: 'Outfit', 'Noto Sans JP', sans-serif;
  --font-body: 'Inter', 'Noto Sans JP', sans-serif;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-light);
  color: var(--color-text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  opacity: 1;
  transition: opacity 0.2s ease-in-out;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-light);
}
::-webkit-scrollbar-thumb {
  background: hsl(220, 10%, 80%);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: hsl(220, 10%, 65%);
}

/* Utilities / Animations */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.section-padding {
  padding: 100px 0;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: var(--transition-smooth);
  background-color: var(--color-light-surface);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
}

.header.sticky {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  height: 70px;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-dark);
  position: relative;
  padding: 5px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-smooth);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-container img {
  height: 42px;
  width: auto;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.lang-selector-custom {
  display: flex;
  align-items: center;
  gap: 5px;
}

.lang-btn {
  background: none;
  border: none;
  padding: 4px 10px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 4px;
  color: var(--color-text-muted);
  transition: var(--transition-smooth);
}

.lang-btn:hover {
  color: var(--color-primary);
  background-color: hsl(222, 100%, 97%);
}

.lang-btn.active {
  background-color: hsl(222, 100%, 95%); /* Richer light blue-gray box */
  color: var(--color-primary); /* Electric blue */
  font-weight: 700;
}

.lang-separator {
  color: var(--color-text-muted);
  opacity: 0.4;
  font-size: 0.85rem;
  user-select: none;
}

.nav-contact-btn {
  padding: 10px 28px;
  border-radius: 50px; /* Perfect pill shape */
  font-size: 0.92rem;
  font-weight: 700;
  background-color: var(--color-primary); /* Electric Blue */
  color: var(--color-light) !important;
  border: none;
  box-shadow: 0 4px 18px rgba(0, 82, 204, 0.24); /* Soft blue shadow glow */
  margin-right: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.2px;
}

.nav-contact-btn:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-1.5px);
  box-shadow: 0 6px 24px rgba(0, 82, 204, 0.38); /* Stronger glow on hover */
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  width: 30px;
  height: 24px;
  justify-content: center;
}

.mobile-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--color-dark);
  transition: var(--transition-smooth);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

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

body.no-scroll {
  overflow: hidden;
}

/* Hero Section */
.hero {
  padding: calc(var(--header-height) + 100px) 0 100px;
  background: linear-gradient(135deg, rgba(12, 17, 28, 0.75) 0%, rgba(12, 17, 28, 0.65) 100%), url('../assent/3.jpg') center/cover no-repeat;
  color: var(--color-light-surface);
  display: flex;
  align-items: center;
  min-height: 750px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 5.5rem;
  font-weight: 900;
  letter-spacing: -2px;
  line-height: 1.1;
  color: var(--color-light-surface);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  text-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-primary-light);
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-desc {
  font-size: 1.1rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.5rem;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-buttons {
  display: flex;
  gap: 15px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-weight: 600;
  border-radius: 4px;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-light);
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 82, 204, 0.25);
}

.hero .btn-outline {
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  color: var(--color-light);
  background: transparent;
}

.hero .btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-light);
  border-color: var(--color-light);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1.5px solid var(--color-dark);
  color: var(--color-dark);
  background: transparent;
}

.btn-outline:hover {
  background-color: var(--color-dark);
  color: var(--color-light);
  transform: translateY(-2px);
}

.hero-image-wrapper {
  display: none;
}

/* Relational Overview Diagram Section */
.overview {
  background-color: var(--color-light-surface);
  text-align: center;
}

.section-header {
  max-width: 700px;
  margin: 0 auto 60px;
  text-align: center;
}

.section-header .section-tag {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: inline-block;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: var(--color-dark);
}

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

/* CSS Relational Circle Layout */
.diagram-container {
  position: relative;
  width: 100%;
  max-width: 900px;
  height: auto;
  aspect-ratio: 900 / 680;
  margin: 40px auto 0;
}

.diagram-svg-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.diagram-node {
  position: absolute;
  transform: translate(-50%, -50%);
  z-index: 2;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.diagram-node:hover {
  transform: translate(-50%, -50%) scale(1.08);
}

.node-circle {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background-color: var(--color-light-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  font-size: 1.4rem;
  transition: var(--transition-smooth);
}

.node-label {
  margin-top: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-dark);
  white-space: nowrap;
  background-color: var(--color-light-surface);
  padding: 3px 8px;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,0.03);
  box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

/* Central Node */
.diagram-node.central {
  top: 45%;
  left: 50%;
}

.diagram-node.central .node-circle {
  width: 170px;
  height: 70px;
  border-radius: 35px;
  border-color: var(--color-primary);
  box-shadow: 0 0 30px rgba(0, 82, 204, 0.15);
  background-color: var(--color-light-surface);
  padding: 10px;
}

.diagram-node.central img {
  width: 140px;
  height: auto;
}

.diagram-node.central .node-label {
  font-size: 0.9rem;
  color: var(--color-primary-dark);
  font-weight: 800;
  border-color: rgba(224, 90, 16, 0.15);
}

/* Primary/Orange Ring (Upper arc) */
.diagram-node.orange {
  color: var(--color-primary);
}

.diagram-node.orange .node-circle {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.diagram-node.orange:hover .node-circle {
  background-color: var(--color-primary);
  color: var(--color-light);
  box-shadow: 0 0 20px rgba(0, 82, 204, 0.25);
}

.diagram-node.node-a { top: 22%; left: 30%; }
.diagram-node.node-b { top: 15%; left: 50%; }
.diagram-node.node-c { top: 22%; left: 70%; }

/* Secondary/Blue Ring (Middle arc / lower-middle) */
.diagram-node.blue {
  color: var(--color-secondary);
}

.diagram-node.blue .node-circle {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.diagram-node.blue:hover .node-circle {
  background-color: var(--color-secondary);
  color: var(--color-light);
  box-shadow: 0 0 20px rgba(46, 91, 255, 0.3);
}

.diagram-node.node-d { top: 46%; left: 24%; }
.diagram-node.node-e { top: 60%; left: 50%; }
.diagram-node.node-f { top: 46%; left: 76%; }

/* Outer Ring (Bottom line of nodes) */
.diagram-node.outer {
  color: var(--color-text-muted);
}

.diagram-node.outer .node-circle {
  border-color: var(--color-border);
  color: var(--color-text-muted);
}

.diagram-node.outer:hover .node-circle {
  border-color: var(--color-dark);
  color: var(--color-dark);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

.diagram-node.node-g { top: 76%; left: 16%; }
.diagram-node.node-h { top: 76%; left: 38%; }
.diagram-node.node-i { top: 76%; left: 62%; }
.diagram-node.node-j { top: 76%; left: 84%; }

/* Responsive grid view of diagram for mobile devices */
.diagram-grid-view {
  display: none;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.diagram-card {
  background-color: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition-smooth);
}

.diagram-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.diagram-card.orange {
  border-top: 4px solid var(--color-primary);
}

.diagram-card.blue {
  border-top: 4px solid var(--color-secondary);
}

.diagram-card .card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.diagram-card h4 {
  font-size: 1rem;
  font-weight: 700;
}

/* Why Choose Us Section */
.advantages {
  background-color: hsl(210, 30%, 96%);
}

.advantages-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 60px;
}

.advantages-image {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0,0,0,0.08);
}

.advantages-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.advantages-image:hover img {
  transform: scale(1.03);
}

.advantages-list {
  display: flex;
  flex-direction: column;
  gap: 35px;
}

.advantage-item {
  display: flex;
  gap: 25px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.advantage-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.advantage-num {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.advantage-content h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
  color: var(--color-dark);
}

.advantage-content p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Features Section (Alternating) */
.features {
  background-color: var(--color-light-surface);
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 100px;
  margin-top: 60px;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}

.feature-row.reverse {
  grid-template-columns: 1.1fr 1fr;
}

.feature-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.feature-tag {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.feature-info h3 {
  font-size: 2.2rem;
  color: var(--color-dark);
  font-weight: 700;
}

.feature-info p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.feature-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}

.feature-image img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.feature-row:hover .feature-image img {
  transform: scale(1.04);
}

/* Services Section (Blue Theme Grid) */
.services {
  background-color: hsl(220, 20%, 96%);
}

.services .section-header .section-tag {
  color: var(--color-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 30px;
  margin-top: 60px;
}

.service-card {
  background-color: var(--color-light-surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.04);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(46, 91, 255, 0.12);
}

.service-card-image {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.service-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.service-card:hover .service-card-image img {
  transform: scale(1.06);
}

.service-card-content {
  padding: 30px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-icon-wrapper {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  background-color: rgba(46, 91, 255, 0.08);
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon-wrapper {
  background-color: var(--color-secondary);
  color: var(--color-light);
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--color-dark);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  flex-grow: 1;
}
/* Contact Section (Call-to-Action Blue Banner) */
.contact-banner {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: 90px 0;
  text-align: center;
}

.contact-banner .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 800px;
}

.contact-banner h2 {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.contact-banner p {
  font-size: 1.15rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 35px;
}

.contact-banner .btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 1.5px solid var(--color-light);
  background-color: transparent;
  color: var(--color-light);
  padding: 12px 36px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.contact-banner .btn-outline svg {
  transition: transform 0.3s ease;
}

.contact-banner .btn-outline:hover {
  background-color: var(--color-light);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-banner .btn-outline:hover svg {
  transform: translateX(4px);
}

/* Footer (White Modern Theme) */
.footer {
  background-color: #ffffff;
  color: var(--color-text-dark);
  padding: 70px 0 0;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1.4fr 1.2fr;
  gap: 50px;
  margin-bottom: 45px;
  align-items: flex-start;
}

.footer-logo-block {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-logo-block img {
  height: 48px;
  align-self: flex-start;
}

.footer-address-block {
  margin-top: 10px;
}

.footer-address-block h5 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-address-block p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  line-height: 1.5;
}

.address-map-link {
  color: inherit;
  text-decoration: underline;
  transition: opacity 0.3s ease;
}

.address-map-link:hover {
  opacity: 0.8;
}

/* Footer Links Grid */
.footer-links-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 30px;
  width: 100%;
}

.footer-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-nav-links a {
  font-size: 0.95rem;
  color: var(--color-text-dark);
  font-weight: 500;
  transition: var(--transition-smooth);
}

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

/* Social circles on the right */
.footer-social-block {
  display: flex;
  justify-content: flex-end;
  width: 100%;
}

.footer-social-icons {
  display: flex;
  gap: 15px;
}

.social-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: var(--transition-smooth);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 10px rgba(0,0,0,0.02);
}

.social-circle svg {
  transition: var(--transition-smooth);
}

.social-circle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 4px 15px rgba(0, 82, 204, 0.1);
  transform: translateY(-3px);
}

/* Footer Bottom Bar (Blue Bar) */
.footer-bottom-bar {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 16px 0;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* Responsive Media Queries */
@media (max-width: 991px) {
  html {
    font-size: 15px;
  }
  
  .section-padding {
    padding: 80px 0;
  }

  .header-actions {
    display: none; 
  }
  
  .lang-selector-custom {
    margin-left: auto;
    margin-right: 15px;
    display: flex;
    align-items: center;
    gap: 4px;
  }
  
  .mobile-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--color-light-surface);
    box-shadow: -10px 0 30px rgba(0,0,0,0.05);
    transition: var(--transition-smooth);
    padding: 100px 40px 40px;
    display: flex;
    flex-direction: column;
    gap: 30px;
    z-index: 999;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-links {
    flex-direction: column;
    gap: 18px;
  }

  .nav-links a {
    font-size: 1.2rem;
  }

  .mobile-menu-actions {
    display: block;
    margin-top: auto; /* Push contact button to the bottom of the side menu drawer */
  }

  .mobile-contact-btn {
    width: 100%;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 700;
    background-color: var(--color-primary);
    color: var(--color-light) !important;
    text-align: center;
    box-shadow: 0 4px 18px rgba(0, 82, 204, 0.24);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
  }

  .mobile-contact-btn:hover {
    background-color: var(--color-primary-light);
    box-shadow: 0 6px 24px rgba(0, 82, 204, 0.38);
    transform: translateY(-1.5px);
  }

  /* Hide relational absolute diagram, show grid view instead */
  .diagram-container {
    display: none;
  }

  .diagram-grid-view {
    display: grid;
  }

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

  .advantages-image img {
    height: 380px;
  }

  .feature-row, .feature-row.reverse {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .feature-row.reverse .feature-info {
    order: -1;
  }

  .feature-image img {
    height: 300px;
  }

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

  .footer-social-block {
    justify-content: flex-start;
  }

  .footer-links-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  /* Responsive Hero */
  .hero {
    padding: calc(var(--header-height) + 20px) 0 60px;
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hero h1 {
    font-size: 3.8rem;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.8rem;
  }

  .hero-desc {
    font-size: 1.1rem;
  }

  .hero-buttons {
    flex-direction: column;
  }
}

/* Hamburguer Animation */
.mobile-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Footer Address Icons & Link Styling */
.office-title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-dark);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 15px;
}

.office-icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.footer-phone a,
.email a {
  color: var(--color-text-muted);
  font-weight: 500;
  transition: var(--transition-smooth);
}

.footer-address-block:first-of-type .footer-phone a {
  color: var(--color-primary);
}

.footer-phone a:hover,
.email a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

.footer-address-block:first-of-type .footer-phone a:hover {
  color: var(--color-primary-light);
}

@media (max-width: 480px) {
  .logo-container img {
    height: 38px;
  }
  
  .footer-links-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 20px;
  }
  .footer-nav-links {
    align-items: center;
  }
  .footer-logo-block img {
    align-self: center;
  }
  .footer-address-block {
    text-align: center;
  }
  .office-title {
    justify-content: center;
  }
  .footer-social-block {
    justify-content: center;
  }
  .hero h1 {
    font-size: 2.3rem;
  }
  .contact-banner h2 {
    font-size: 2rem;
  }
  .contact-banner p {
    font-size: 1rem;
    line-height: 1.6;
  }
}