:root {
    --azul: #0D3B6E;
    --azul-med: #1A5FA8;
    --azul-claro: #2B82D4;
    --verde: #1E8A5E;
    --verde-claro: #27B07A;
    --gris-oscuro: #1A1D23;
    --gris-mid: #3C4048;
    --gris-claro: #F4F6F9;
    --blanco: #FFFFFF;
    --acento: #E8F4FD;
    --texto: #2C303A;
    --texto-sub: #6B7280;
    --borde: rgba(13,59,110,0.12);
    --sombra: 0 4px 24px rgba(13,59,110,0.10);
    --sombra-hover: 0 12px 40px rgba(13,59,110,0.18);
    --radio: 16px;
    --radio-sm: 8px;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; }

  body {
    font-family: 'DM Sans', sans-serif;
    color: var(--texto);
    background: var(--blanco);
    overflow-x: hidden;
  }

  h1,h2,h3,h4 { font-family: 'Syne', sans-serif; }

  /* ── NAVBAR ── */
  .navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--borde);
  padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  height: 75px;
  transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: 0 2px 20px rgba(13,59,110,0.12); }

.nav-brand {
  display: flex; align-items: center;
}
.nav-brand img {
  height: 55px;
  width: auto;
  margin-left: 20px;
  object-fit: contain;
}

.nav-links {
  display: flex; align-items: center; gap: 0.25rem;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  font-size: 13.5px; font-weight: 500;
  color: var(--texto);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radio-sm);
  transition: all 0.2s;
  position: relative;
}
.nav-links a:hover { color: var(--azul-claro); background: var(--acento); }

.nav-links .dropdown { position: relative; }
.nav-links .dropdown-menu {
  display: none;
  position: absolute; top: calc(100% + 8px); left: 0;
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio-sm);
  box-shadow: var(--sombra);
  min-width: 220px;
  overflow: hidden;
  list-style: none;
  z-index: 100;
}

.nav-links .dropdown:hover .dropdown-menu { 
  display: block; 
}

.nav-links .dropdown-menu a {
  display: block; padding: 0.65rem 1rem;
  border-radius: 0;
  font-size: 13px;
  border-bottom: 1px solid var(--borde);
}
.nav-links .dropdown-menu li:last-child a { border-bottom: none; }

.nav-inn { 
   height: 45px;
   width: auto; 
   margin-right: 20px;
   opacity: 0.8; 
  }
   
.nav-cta {
  background: var(--azul);
  color: var(--blanco) !important;
  padding: 0.55rem 1.2rem !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--azul-med) !important; color: var(--blanco) !important; }

    /* ── HERO ── */
  .hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--azul) 0%, var(--azul-med) 60%, var(--azul-claro) 100%);
    display: flex; 
    align-items: center; /* Centra el contenido verticalmente */
    padding: 120px 6vw 80px;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: 1;
  }

  /* Contenedor Flex para separar Texto de Imágenes */
  .hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    width: 100%;
    position: relative;
    z-index: 2; /* Por encima del decorado ::before */
  }

  /* Columna de Texto */
  .hero-text {
    flex: 1.2;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    color: rgba(255,255,255,0.9);
    font-size: 12px; font-weight: 500;
    letter-spacing: 0.08em; text-transform: uppercase;
    padding: 6px 16px; border-radius: 50px;
    margin-bottom: 2rem;
    backdrop-filter: blur(4px);
  }

  .hero-badge span { width: 6px; height: 6px; background: var(--verde-claro); border-radius: 50%; display: inline-block; }

  .hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.2rem);
    font-weight: 800;
    color: var(--blanco);
    line-height: 1.05;
    letter-spacing: -0.03em;
    max-width: 800px;
    margin-bottom: 1.5rem;
  }

  .hero h1 em { color: var(--verde-claro); font-style: normal; }

  .hero-sub {
    font-size: 1.15rem; color: rgba(255,255,255,0.75);
    max-width: 520px; line-height: 1.7;
    margin-bottom: 2.5rem;
    font-weight: 300;
  }

  /* Estadísticas */
  .hero-stats {
    position: relative;
    display: flex; gap: 2px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radio);
    overflow: hidden;
    backdrop-filter: blur(8px);
    width: 100%;
    max-width: 600px;
  }

  .hero-stat {
    flex: 1; padding: 1.2rem 1.5rem;
    border-right: 1px solid rgba(255,255,255,0.12);
  }

  .hero-stat:last-child { border-right: none; }

  .hero-stat .num {
    font-family: 'Syne', sans-serif;
    font-size: 1.8rem; font-weight: 800;
    color: var(--blanco);
  }

  .hero-stat .label {
    font-size: 11px; color: rgba(255,255,255,0.65);
    margin-top: 5px; font-weight: 300; text-transform: uppercase;
  }

  /* ── COLUMNA DE IMÁGENES ── */
  .hero-visuals {
    flex: 0.8;
    display: flex;
    flex-direction: column;
    
  }

  .img-wrapper {
    width: 100%;
    height: 260px;
    margin-top: 30px;
    margin-right: 35px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

  .img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .img-wrapper:hover {
    transform: scale(1.05) translateX(0);
    z-index: 5;
  }

  /* ── SECCIONES ── */
  section { padding: 80px 6vw; }
  .section-label {
    font-size: 11px; font-weight: 600;
    letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--azul-claro);
    margin-bottom: 0.75rem;
  }
  .section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 800;
    color: var(--azul);
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin-bottom: 1rem;
  }
  .section-sub {
    font-size: 1rem; color: var(--texto-sub);
    max-width: 560px; line-height: 1.7;
  }

  /* ── EMPRESA ── */
  .empresa { background: var(--gris-claro); }
  .empresa-header { margin-bottom: 4rem; }
  .empresa-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
  }
  .empresa-card {
    background: var(--blanco);
    border-radius: var(--radio);
    padding: 2rem;
    border: 1px solid var(--borde);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
  }
  .empresa-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--azul), var(--verde-claro));
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.3s;
  }
  .empresa-card:hover { transform: translateY(-4px); box-shadow: var(--sombra-hover); }
  .empresa-card:hover::before { transform: scaleX(1); }
  .empresa-card-icon {
    width: 52px; height: 52px;
    background: var(--acento);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.25rem;
    color: var(--azul-med);
    font-size: 1.4rem;
  }
  .empresa-card h3 {
    font-size: 1.15rem; font-weight: 700;
    color: var(--azul);
    margin-bottom: 0.75rem;
  }
  .empresa-card p {
    font-size: 14px; color: var(--texto-sub);
    line-height: 1.7;
  }

    /* ── SERVICIOS STRIP ── */
  /* ── SERVICIOS STRIP CON IMÁGENES ── */
.servicios-strip {
  background: var(--azul);
  padding: 80px 6vw;
}

.servicios-strip .section-title { 
  color: var(--blanco); 
}

.servicios-strip .section-label { 
  color: var(--verde-claro); 
}

.servicios-strip .section-sub { 
  color: rgba(255,255,255,0.65); 
}

.servicios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radio);
  overflow: hidden;
  margin-top: 3rem;
  border: 1px solid rgba(255,255,255,0.1);
}

.serv-item {
  position: relative;
  min-height: 280px;
  text-decoration: none;
  display: flex;
  align-items: flex-end; /* Posiciona el texto abajo */
  overflow: hidden;
  background: var(--azul);
}

/* Capa de la imagen de fondo */
.serv-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
  z-index: 1;
}

/* Overlay para asegurar legibilidad del texto */
.serv-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom, 
    rgba(13, 38, 64, 0.3) 0%, 
    rgba(13, 38, 64, 0.85) 80%
  );
  z-index: 2;
}

/* Contenido de texto (Número, Título, Flecha) */
.serv-content {
  position: relative;
  z-index: 3;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

.serv-item .serv-num {
  font-size: 11px; 
  font-weight: 600;
  color: var(--verde-claro);
  letter-spacing: 0.15em;
}

.serv-item .serv-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem; 
  font-weight: 700;
  color: var(--blanco);
  line-height: 1.2;
}

.serv-item .serv-arrow {
  color: var(--verde-claro);
  font-size: 1rem;
  transform: translateX(-10px);
  opacity: 0;
  transition: all 0.3s ease;
}

/* ── ESTADOS HOVER ── */
.serv-item:hover .serv-bg {
  transform: scale(1.1); /* Zoom a la foto */
}

.serv-item:hover .serv-bg::after {
  background: linear-gradient(
    to bottom, 
    rgba(34, 197, 94, 0.15) 0%, /* Tinte verde sutil */
    rgba(13, 38, 64, 0.95) 100%
  );
}

.serv-item:hover .serv-arrow {
  transform: translateX(0);
  opacity: 1;
}

@media (max-width: 768px) {
  .serv-item {
    min-height: 220px;
  }
}
  
  /* ── ACREDITACIONES ── */
  .acreditaciones { background: var(--gris-claro); }
  .acred-header { margin-bottom: 3rem; }
  .acred-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
  }
  .acred-card {
    border-radius: var(--radio);
    overflow: hidden;
    position: relative;
    aspect-ratio: 3/4;
    cursor: pointer;
    transition: transform 0.4s, box-shadow 0.4s;
    background: var(--gris-oscuro);
  }
  .acred-card:hover { transform: translateY(-6px); box-shadow: var(--sombra-hover); }
  .acred-card .bg-img {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    transition: transform 0.5s;
  }
  .acred-card:hover .bg-img { transform: scale(1.06); }
  .acred-card .overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(10,30,60,0.95) 0%, rgba(10,30,60,0.4) 55%, transparent 100%);
    transition: opacity 0.3s;
  }
  .acred-card .front {
    position: absolute; inset: 0;
    display: flex; flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    transition: opacity 0.3s;
  }
  .acred-card .front .le-badge {
    display: inline-block;
    background: var(--verde);
    color: var(--blanco);
    font-size: 11px; font-weight: 700;
    letter-spacing: 0.08em;
    padding: 4px 10px; border-radius: 50px;
    margin-bottom: 0.75rem;
    width: fit-content;
  }
  .acred-card .front h3 {
    font-size: 1.2rem; font-weight: 700;
    color: var(--blanco);
    line-height: 1.3;
  }
  .acred-card .back {
    position: absolute; inset: 0;
    background: var(--azul);
    display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    text-align: center;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.3s;
  }
  .acred-card:hover .back { opacity: 1; }
  .acred-card:hover .front { opacity: 0; }
  .acred-card:hover .overlay { opacity: 0; }
  .acred-card .back h4 {
    font-size: 1.5rem; font-weight: 800;
    color: var(--blanco);
    margin-bottom: 0.5rem;
  }
  .acred-card .back p {
    font-size: 14px; color: rgba(255,255,255,0.75);
    margin-bottom: 1.5rem; line-height: 1.6;
  }
  .btn-cert {
    background: var(--verde);
    color: var(--blanco);
    font-family: 'Syne', sans-serif;
    font-size: 13px; font-weight: 700;
    padding: 0.65rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    transition: background 0.2s;
    display: inline-flex; align-items: center; gap: 6px;
  }
  .btn-cert:hover { background: var(--verde-claro); }


  /* ── INTRANET ── */
  .intranet-band {
  background: var(--blanco);
  padding: 80px 6vw; 
  display: flex; 
  flex-direction: column; 
  align-items: center;    
  justify-content: center;
  text-align: center;    
  gap: 3rem;
  }

  .intranet-text h2 {
    font-size: 1.6rem; 
    font-weight: 800;
    color: var(--azul); 
    margin-bottom: 0.5rem;
  }

  .intranet-text p { 
    color: var(--texto-sub); 
    font-size: 15px; 
    margin-bottom: 30px;
  }

  .btn-intranet {
    background: var(--azul);
    color: var(--blanco);
    font-family: 'Syne', sans-serif;
    font-size: 15px; font-weight: 700;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 8px;
    transition: background 0.2s;
    white-space: nowrap;
  }
  .btn-intranet:hover { background: var(--azul-med); }

  /* ── GALERÍA ── */
  .galeria-section { background: var(--blanco); }
  .galeria-masonry {
    columns: 3; column-gap: 1rem;
    margin-top: 3rem;
  }
  .galeria-item {
    break-inside: avoid;
    margin-bottom: 1rem;
    border-radius: var(--radio-sm);
    overflow: hidden;
    position: relative;
    cursor: pointer;
  }
  .galeria-item img {
    width: 100%; display: block;
    transition: transform 0.4s;
  }
  .galeria-item:hover img { transform: scale(1.04); }
  .galeria-item .g-overlay {
    position: absolute; inset: 0;
    background: rgba(13,59,110,0.6);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.3s;
    color: var(--blanco); font-size: 1.5rem;
  }
  .galeria-item:hover .g-overlay { opacity: 1; }

  /* Lightbox */
  .lightbox { display: none; position: fixed; inset: 0; z-index: 9999; background: rgba(0,0,0,0.9); align-items: center; justify-content: center; }
  .lightbox.active { display: flex; }
  .lightbox img { max-width: 90vw; max-height: 85vh; border-radius: var(--radio-sm); }
  .lightbox-close { position: absolute; top: 1.5rem; right: 2rem; color: var(--blanco); font-size: 2rem; cursor: pointer; opacity: 0.8; transition: opacity 0.2s; }
  .lightbox-close:hover { opacity: 1; }
  .lightbox-nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,0.12); border: none; color: var(--blanco); width: 48px; height: 48px; border-radius: 50%; cursor: pointer; font-size: 1.2rem; display: flex; align-items: center; justify-content: center; transition: background 0.2s; }
  .lightbox-nav:hover { background: rgba(255,255,255,0.25); }
  .lightbox-prev { left: 1.5rem; }
  .lightbox-next { right: 1.5rem; }

    /* ── CONTACTO ── */
  .contacto { 
    background: var(--gris-claro); 
    padding: 80px 6vw;
  }

  .contacto-header { 
    margin-bottom: 3rem; 
  }

  .contacto-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
  }

  /* Columna Izquierda: Tarjeta de Ubicación */
  .contacto-left {
    display: flex;
    flex-direction: column;
  }

  .contacto-card {
    border-radius: var(--radio);
    overflow: hidden;
    box-shadow: var(--sombra);
    border: 1px solid var(--borde);
    background: var(--blanco);
  }

  /* Contenedor de la Foto del Local */
  .contacto-photo {
    position: relative;
    height: 220px;
    overflow: hidden;
  }

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

  .contacto-photo:hover img {
    transform: scale(1.05);
  }

  /* Etiqueta sobre la foto */
  .photo-overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 20px 15px 10px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: white;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
  }

  /* Contenedor del Mapa */
  .contacto-map {
    height: 280px;
    border-top: 1px solid var(--borde);
  }

  .contacto-map iframe { 
    width: 100%; 
    height: 100%; 
    border: none; 
  }

  /* Columna Derecha: Botones de Área */
  .contacto-right {
    display: flex;
    flex-direction: column;
  }

  .contacto-area-title {
    font-size: 14px; 
    font-weight: 600;
    color: var(--texto-sub);
    text-transform: uppercase; 
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
  }

  .contacto-btns { 
    display: flex; 
    flex-direction: column; 
    gap: 0.75rem; 
    margin-bottom: 2.5rem; 
  }

  .btn-area {
    display: flex; 
    align-items: center; 
    gap: 1rem;
    background: var(--blanco);
    border: 1px solid var(--borde);
    border-radius: var(--radio-sm);
    padding: 0.9rem 1.25rem;
    text-decoration: none;
    color: var(--texto);
    font-size: 14px; 
    font-weight: 500;
    transition: all 0.2s ease;
  }

  .btn-area:hover {
    border-color: var(--azul-claro);
    color: var(--azul);
    background: var(--acento);
    transform: translateX(6px);
  }

  .btn-area i { 
    color: var(--azul-claro); 
    width: 18px; 
    text-align: center; 
  }

  .btn-area span { 
    flex: 1; 
  }

  .btn-area .arrow { 
    color: var(--texto-sub); 
    font-size: 12px; 
    transition: transform 0.2s;
  }

  .btn-area:hover .arrow {
    transform: translateX(3px);
    color: var(--azul);
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 992px) {
    .contacto-layout { 
      grid-template-columns: 1fr; 
      gap: 2.5rem;
    }
    
    .contacto-photo { 
      height: 250px; 
    }
  }

  @media (max-width: 480px) {
    .contacto {
      padding: 60px 5vw;
    }
    
    .btn-area {
      padding: 0.8rem 1rem;
    }
  }

  /* ── FOOTER ── */
  footer {
    background: var(--gris-oscuro);
    color: rgba(255,255,255,0.8);
    padding: 60px 6vw 30px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2.5fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 2rem;
  }

  .footer-brand-block {
    display: flex;
    align-items: flex-start; 
    gap: 2rem;       
    margin-top: 20px;      
  }

  .footer-logo {
    width: 140px;
    flex-shrink: 0;
  }

  .footer-desc {
    font-size: 13px; 
    color: rgba(255,255,255,0.5);
    line-height: 1.7;
     margin-top: 0;
  }
  footer h4 {
    font-family: 'Syne', sans-serif;
    font-size: 13px; font-weight: 700;
    color: var(--blanco);
    text-transform: uppercase; letter-spacing: 0.1em;
    margin-bottom: 1.25rem;
  }
  .footer-office { margin-bottom: 1.25rem; }
  .footer-office strong {
    display: block; font-size: 13px; font-weight: 600;
    color: var(--verde-claro); margin-bottom: 0.35rem;
  }
  .footer-office a {
    display: flex; align-items: center; gap: 6px;
    font-size: 13px; color: rgba(255,255,255,0.55);
    text-decoration: none;
    transition: color 0.2s;
    margin-bottom: 3px;
  }
  .footer-office a:hover { color: var(--blanco); }
  .footer-office a i { width: 14px; font-size: 12px; color: var(--azul-claro); }
  .footer-bottom {
    display: flex; align-items: center; justify-content: space-between;
    font-size: 12px; color: rgba(255,255,255,0.3);
  }
  .footer-bottom a { color: rgba(255,255,255,0.4); text-decoration: none; transition: color 0.2s; }
  .footer-bottom a:hover { color: rgba(255,255,255,0.8); }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    .footer-brand-block { flex-direction: column; align-items: center; text-align: center; gap: 1.5rem;}
    .hero h1 { font-size: 2.2rem; }
    .hero-stats { position: relative; bottom: auto; left: auto; right: auto; margin-top: 3rem; flex-wrap: wrap; }
    .hero-stat { min-width: 120px; }
    .nav-links { display: none; }
    .galeria-masonry { columns: 2; }
    .contacto-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    section { padding: 60px 5vw; }
    .acred-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
  }

  /* ── ANIMACIONES ── */
  .fade-up {
    opacity: 0; transform: translateY(24px);
    transition: opacity 0.6s, transform 0.6s;
  }
  .fade-up.visible { opacity: 1; transform: translateY(0); }
  .fade-up:nth-child(2) { transition-delay: 0.1s; }
  .fade-up:nth-child(3) { transition-delay: 0.2s; }
  .fade-up:nth-child(4) { transition-delay: 0.3s; }
  .fade-up:nth-child(5) { transition-delay: 0.4s; }