body {
  margin: 0;
  font-family: 'Segoe UI', 'Arial', sans-serif;
  background: #f5f8fa;
  color: #222;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 48px;
  height: 72px;
  background: linear-gradient(90deg, #1a237e 60%, #3949ab 100%);
  box-shadow: 0 2px 12px rgba(30,40,90,0.08);
}

.navbar__brand {
  color: #fff;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.navbar__menu {
  display: flex;
  gap: 36px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__menu a {
  color: #e3e9f7;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 24px;
  transition: background 0.2s, color 0.2s;
}

.navbar__menu a:hover {
  background: #536dfe;
  color: #fff;
}

.navbar__menu a.active {
  background: #2979ff;
  color: #fff;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(41,121,255,0.18);
}

.breadcrumb {
  max-width: 1200px;
  margin: 32px auto 0 auto;
  padding: 12px 24px;
  font-size: 1rem;
  color: #3949ab;
  background: #e3e9f7;
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(41,121,255,0.06);
}

.breadcrumb a {
  color: #1a237e;
  text-decoration: none;
  font-weight: 500;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.install-banner {
  position: relative;
  width: 100%;
  min-height: 360px;
  /* margin: 32px 0 0 0; */
  display: flex;
  align-items: center;
  justify-content: center;
}

.install-banner img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  /* border-radius: 24px;
  box-shadow: 0 4px 24px rgba(41,121,255,0.10); */
}

.install-banner__content {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  background: rgba(30,40,90,0.55);
  padding: 36px 48px;
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(30,40,90,0.18);
  text-align: center;
}

.install-banner__content h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.install-banner__content p {
  font-size: 1.15rem;
  color: #b3c0e0;
}

.install-section {
  padding: 56px 48px 32px 48px;
  background: #fff;
  border-radius: 32px;
  margin: 32px auto 0 auto;
  max-width: 1200px;
  box-shadow: 0 2px 16px rgba(30,40,90,0.06);
}

.install-section h2 {
  font-size: 2rem;
  color: #1a237e;
  font-weight: 700;
  margin-bottom: 36px;
  text-align: center;
}

.install-steps {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
}

.install-step {
  background: #e3e9f7;
  border-radius: 24px;
  box-shadow: 0 4px 24px rgba(41,121,255,0.08);
  padding: 32px 24px;
  min-width: 200px;
  max-width: 240px;
  flex: 1 1 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: box-shadow 0.2s, transform 0.2s;
}

.install-step:hover {
  box-shadow: 0 8px 32px rgba(41,121,255,0.18);
  transform: translateY(-6px) scale(1.04);
}

.install-step h3 {
  font-size: 1.1rem;
  color: #232a3d;
  font-weight: 600;
  margin: 18px 0 8px 0;
}

.install-step p {
  font-size: 1rem;
  color: #3a4a6d;
  text-align: center;
}

.equipment-section {
  padding: 56px 48px 32px 48px;
  background: linear-gradient(90deg, #e3e9f7 60%, #f5f8fa 100%);
  border-radius: 32px;
  margin: 32px auto 0 auto;
  max-width: 1200px;
  box-shadow: 0 2px 16px rgba(30,40,90,0.04);
}

.equipment-section h2 {
  text-align: center;
  font-size: 2rem;
  color: #1a237e;
  font-weight: 700;
  margin-bottom: 36px;
}

.equipment-list {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
}

.equipment-card {
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 4px 24px rgba(41,121,255,0.08);
  padding: 28px 18px;
  min-width: 180px;
  max-width: 220px;
  flex: 1 1 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: box-shadow 0.2s, transform 0.2s;
}

.equipment-card:hover {
  box-shadow: 0 8px 32px rgba(41,121,255,0.18);
  transform: translateY(-6px) scale(1.04);
}

.equipment-card h3 {
  font-size: 1.1rem;
  color: #232a3d;
  font-weight: 600;
  margin: 18px 0 0 0;
  text-align: center;
}

.case-section {
  padding: 56px 48px 32px 48px;
  background: #fff;
  border-radius: 32px;
  margin: 32px auto 0 auto;
  max-width: 1200px;
  box-shadow: 0 2px 16px rgba(30,40,90,0.06);
}

.case-section h2 {
  font-size: 2rem;
  color: #1a237e;
  font-weight: 700;
  margin-bottom: 36px;
  text-align: center;
}

.case-list {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
}

.case-card {
  background: #e3e9f7;
  border-radius: 24px;
  box-shadow: 0 4px 24px rgba(41,121,255,0.08);
  padding: 24px 18px;
  min-width: 320px;
  max-width: 400px;
  flex: 1 1 320px;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.case-card:hover {
  box-shadow: 0 8px 32px rgba(41,121,255,0.18);
  transform: translateY(-6px) scale(1.03);
}

.case-card img {
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(41,121,255,0.10);
}

.case-info h3 {
  font-size: 1.1rem;
  color: #232a3d;
  font-weight: 600;
  margin: 0 0 8px 0;
}

.case-info p {
  font-size: 1rem;
  color: #3a4a6d;
  margin: 0 0 12px 0;
}

.case-link {
  display: inline-block;
  background: linear-gradient(90deg, #2979ff 60%, #00e5ff 100%);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  padding: 8px 24px;
  border-radius: 24px;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(41,121,255,0.18);
  transition: background 0.2s, box-shadow 0.2s;
}

.case-link:hover {
  background: linear-gradient(90deg, #00e5ff 60%, #2979ff 100%);
  box-shadow: 0 4px 16px rgba(41,121,255,0.28);
}

.footer {
  background: linear-gradient(90deg, #1a237e 60%, #3949ab 100%);
  color: #fff;
  padding: 48px 0 0 0;
  margin-top: 48px;
  border-radius: 32px 32px 0 0;
}

.footer__main {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  padding: 48px 0 24px 0;
  gap: 32px;
}
.footer__brand {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-label {
  font-weight: 600;
  color: #fff;
  margin-right: 6px;
  font-size: 1rem;
  vertical-align: middle;
}
.footer__info {
  line-height: 2.2;
}
.footer__nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer__nav a {
  color: #e3e9f7;
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 500;
  border-radius: 18px;
  padding: 6px 16px;
  transition: background 0.2s, color 0.2s;
}
.footer__nav a:hover {
  background: #536dfe;
  color: #fff;
}
.footer__copyright {
  text-align: center;
  font-size: 0.95rem;
  color: #b3c0e0;
  padding-bottom: 18px;
}
.footer-icon {
  padding-top: 10px;
  display: inline-block;
  vertical-align: middle;
  margin-bottom: 2px;
  margin-right: 8px;
}
@media (max-width: 1100px) {
  .contact-hero, .contact-main, .footer {
    padding-left: 18px;
    padding-right: 18px;
  }
  .footer__main {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }
  .contact-main {
    flex-direction: column;
    gap: 24px;
  }
}

@media (max-width: 900px) {
  .navbar, .install-section, .equipment-section, .case-section, .footer__main {
    padding-left: 18px;
    padding-right: 18px;
  }
  .install-banner__content {
    padding: 24px 12px;
  }
}

@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    height: auto;
    padding: 0 8px;
  }
  .navbar__menu {
    gap: 12px;
  }
  .install-banner img {
    height: 180px;
  }
  .install-banner__content h1 {
    font-size: 1.3rem;
  }
  .install-section, .equipment-section, .case-section, .footer__main {
    padding-left: 6px;
    padding-right: 6px;
  }
}