/* ===== CSS Variables ===== */
:root {
  --color-primary: #1B6B7A;
  --color-primary-dark: #144F5B;
  --color-primary-light: #2A8B9C;
  --color-accent: #7EC8C9;
  --color-accent-warm: #E8945A;
  --color-bg: #F8FAFB;
  --color-bg-dark: #0F2A30;
  --color-bg-section: #F0F5F6;
  --color-text: #1A2E33;
  --color-text-secondary: #5A757C;
  --color-text-muted: #8FA3A9;
  --color-border: #DCE6E8;
  --color-card: #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(27, 107, 122, 0.06);
  --shadow-md: 0 8px 24px rgba(27, 107, 122, 0.08);
  --shadow-lg: 0 16px 48px rgba(27, 107, 122, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --nav-height: 72px;
}

/* ===== Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}

ul {
  list-style: none;
}

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

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  letter-spacing: 0.5px;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--color-text);
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  padding-top: var(--nav-height);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at top right, rgba(126, 200, 201, 0.12), transparent 50%),
    radial-gradient(ellipse at bottom left, rgba(27, 107, 122, 0.06), transparent 50%);
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(27, 107, 122, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 107, 122, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(27, 107, 122, 0.08);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 28px;
}

.tag-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent-warm);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}

.hero-accent {
  color: var(--color-primary);
  position: relative;
}

.hero-accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 8px;
  background: rgba(126, 200, 201, 0.3);
  z-index: -1;
  border-radius: 4px;
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 60px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 10px;
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 16px rgba(27, 107, 122, 0.25);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(27, 107, 122, 0.3);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 16px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.stat-item {
  flex: 1;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

/* Hero Visual */
.hero-visual {
  position: relative;
}

.hero-image-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-image-glow {
  position: absolute;
  top: -20%;
  right: -20%;
  width: 70%;
  height: 70%;
  background: radial-gradient(circle, rgba(126, 200, 201, 0.4), transparent 70%);
  z-index: 1;
}

.hero-image {
  width: 100%;
  height: 460px;
  object-fit: cover;
  position: relative;
  z-index: 0;
}

.hero-image-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-md);
  z-index: 2;
}

.badge-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  border-radius: 10px;
  flex-shrink: 0;
}

.badge-icon svg {
  width: 22px;
  height: 22px;
}

.badge-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.badge-desc {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--color-text-muted);
  font-size: 12px;
  letter-spacing: 2px;
  z-index: 2;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-text-muted), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===== Section Common ===== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
  position: relative;
  padding: 0 24px;
}

.section-eyebrow::before,
.section-eyebrow::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 16px;
  height: 1px;
  background: var(--color-primary);
  opacity: 0.4;
}

.section-eyebrow::before {
  left: 0;
}

.section-eyebrow::after {
  right: 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.section-header.light .section-title,
.section-header.light .section-desc {
  color: white;
}

.section-header.light .section-eyebrow {
  color: var(--color-accent);
}

.section-header.light .section-eyebrow::before,
.section-header.light .section-eyebrow::after {
  background: var(--color-accent);
}

/* ===== About ===== */
.about {
  padding: 120px 0;
  background: var(--color-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-lead {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 20px;
  font-weight: 500;
}

.about-desc {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

.about-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.about-info-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--color-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.info-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(27, 107, 122, 0.08);
  color: var(--color-primary);
  border-radius: 10px;
  flex-shrink: 0;
}

.info-icon svg {
  width: 20px;
  height: 20px;
}

.info-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.info-value {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

/* Timeline */
.about-timeline {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.timeline-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.timeline-list {
  position: relative;
  padding-left: 8px;
}

.timeline-list::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-left: 32px;
  padding-bottom: 28px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -2px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  z-index: 1;
}

.timeline-year {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.timeline-content h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.timeline-content p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== Products ===== */
.products {
  padding: 120px 0;
  background: var(--color-bg-section);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all 0.4s ease;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

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

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

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 12px;
  background: var(--color-accent-warm);
  color: white;
  font-size: 12px;
  font-weight: 500;
  border-radius: 100px;
  z-index: 2;
}

.product-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(27, 107, 122, 0.1), rgba(126, 200, 201, 0.1));
  color: var(--color-primary);
  border-radius: 12px;
  margin-bottom: 20px;
}

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

.product-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.product-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}

.product-features li {
  font-size: 13px;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

.product-card.featured {
  grid-column: span 1;
}

.product-custom {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border: none;
}

.product-custom .product-icon {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.product-custom .custom-icon {
  background: rgba(232, 148, 90, 0.25);
  color: #fff;
}

.product-custom .product-title,
.product-custom .product-desc,
.product-custom .product-features li {
  color: rgba(255, 255, 255, 0.95);
}

.product-custom .feature-dot {
  background: var(--color-accent-warm);
}

/* ===== Solutions ===== */
.solutions {
  padding: 120px 0;
  background: var(--color-bg-dark);
  position: relative;
  overflow: hidden;
}

.solutions::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(ellipse at top left, rgba(126, 200, 201, 0.08), transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(27, 107, 122, 0.2), transparent 50%);
}

.solutions .container {
  position: relative;
  z-index: 1;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.solution-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(126, 200, 201, 0.12);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.solution-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(126, 200, 201, 0.25);
  transform: translateY(-4px);
}

.solution-card:hover::before {
  opacity: 1;
}

.solution-number {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 600;
  color: var(--color-accent);
  opacity: 0.3;
  margin-bottom: 16px;
  line-height: 1;
}

.solution-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: white;
  margin-bottom: 14px;
}

.solution-desc {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 24px;
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.solution-tags span {
  padding: 6px 14px;
  background: rgba(126, 200, 201, 0.1);
  color: var(--color-accent);
  font-size: 13px;
  border-radius: 100px;
  border: 1px solid rgba(126, 200, 201, 0.2);
}

.solutions-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 40px 48px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-lg);
}

.cta-content h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: white;
  margin-bottom: 8px;
}

.cta-content p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
}

.solutions-cta .btn-primary {
  background: white;
  color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.solutions-cta .btn-primary:hover {
  background: #f0f9fa;
  transform: translateY(-2px);
}

/* ===== Contact ===== */
.contact {
  padding: 120px 0;
  background: var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 24px;
  background: var(--color-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
}

.contact-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(27, 107, 122, 0.1), rgba(126, 200, 201, 0.1));
  color: var(--color-primary);
  border-radius: 12px;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 22px;
  height: 22px;
}

.contact-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.contact-value {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.6;
}

a.contact-value:hover {
  color: var(--color-primary);
}

.contact-map {
  height: 100%;
  min-height: 420px;
}

.map-placeholder {
  position: relative;
  height: 100%;
  min-height: 420px;
  background: linear-gradient(135deg, #E8F0F2 0%, #F5F8F9 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  border: 1px solid var(--color-border);
}

.map-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(27, 107, 122, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 107, 122, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.map-pin {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  position: relative;
  z-index: 2;
  animation: mapPin 3s ease-in-out infinite;
}

.map-pin svg {
  transform: rotate(45deg);
  width: 26px;
  height: 26px;
}

@keyframes mapPin {
  0%, 100% { transform: rotate(-45deg) translateY(0); }
  50% { transform: rotate(-45deg) translateY(-8px); }
}

.map-info {
  text-align: center;
  position: relative;
  z-index: 2;
}

.map-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.map-address {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ===== Footer ===== */
.footer {
  background: #0A1E23;
  padding: 80px 0 32px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand {
  padding-right: 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.footer-logo .logo-mark {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.footer-logo .logo-text {
  color: white;
  font-family: var(--font-serif);
  font-size: 18px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
}

.footer-links h4 {
  font-size: 15px;
  font-weight: 600;
  color: white;
  margin-bottom: 20px;
}

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

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.2s ease;
}

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

.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: white;
  margin-bottom: 20px;
}

.footer-contact p {
  font-size: 14px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

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

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

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

  .hero-visual {
    max-width: 560px;
    margin: 0 auto;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

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

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

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  .nav-container {
    padding: 0 20px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: white;
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
    gap: 0;
  }

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

  .nav-menu li {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu li:last-child .nav-link {
    border-bottom: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 120px 0 80px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .stat-divider {
    display: none;
  }

  .hero-image {
    height: 320px;
  }

  .about,
  .products,
  .solutions,
  .contact {
    padding: 80px 0;
  }

  .about-info-grid {
    grid-template-columns: 1fr;
  }

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

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

  .solutions-cta {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .hero-scroll {
    display: none;
  }
}

/* ===== Scroll Reveal Animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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