```css id="yyk9k6"
/* Reset básico */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Tipografía */
body {
  font-family: 'Nunito', sans-serif;
  color: #54595f;
  background-color: #ffffff;
  line-height: 1.6;
}

/* Contenedor tipo Start Click */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* Títulos */
h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 20px;
}

h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 15px;
}

h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}

/* Texto */
p {
  margin-bottom: 15px;
  font-size: 16px;
}

/* Enlaces generales */
a {
  color: #850000;
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: #004d47;
}

/* Header */
.site-header {
  background-color: #ffffff;
}

.header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}

/* Marca */
.site-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  flex-shrink: 0;
}

/* Start Click® */
.brand-main {
  font-size: 28px;
  font-weight: 800;
  color: #353a40;
  text-decoration: none;
  transition: color 0.3s ease;
}

.brand-main:hover {
  color: #850000;
}

/* Submarca */
.brand-sub {
  font-size: 18px;
  font-weight: 700;
  color: #353a40;
  text-decoration: none;
}

.brand-sub:hover {
  color: #850000;
}

.brand-tagline {
  font-size: 16px;
  color: #54595f;
  margin-top: 2px;
}

/* Navegación */
.site-nav {
  display: flex;
  align-items: center;
  gap: 25px;
  flex-wrap: wrap;
}

.site-nav a {
  font-size: 15px;
  color: #54595f;
  text-decoration: none;
  position: relative;
  margin-left: 0;
}

.site-nav a:hover {
  color: #850000;
}

/* Forzar botón nav blanco siempre */
.site-nav .btn-nav,
.site-nav .btn-nav:visited {
  color: #ffffff !important;
}

/* Hover consistente */
.site-nav .btn-nav:hover {
  color: #ffffff !important;
  background-color: #004d47;
}

/* Dropdown */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 30px;
  left: 0;
  background: #ffffff;
  border-radius: 6px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  padding: 10px 0;
  min-width: 220px;
  z-index: 1000;
}

.dropdown-menu a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: #54595f;
}

.dropdown-menu a:hover {
  background-color: #f5f5f5;
  color: #850000;
}

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

/* Botones */
.btn,
.btn:visited,
.btn-nav,
.btn-nav:visited {
  display: inline-block;
  background-color: #850000;
  color: #ffffff;
  padding: 14px 24px;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn:hover,
.btn-nav:hover {
  background-color: #004d47;
  color: #ffffff !important;
  transform: translateY(-2px);
}

.btn-nav {
  padding: 10px 18px;
  font-size: 14px;
}

/* Botones del hero: separación y responsive */
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

/* Mobile */
@media (max-width: 768px) {
  .hero-actions {
    flex-direction: column;
    gap: 14px;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }
}

/* Secciones */
.section {
  margin-bottom: 60px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 80px 20px;
}

.hero-card {
  margin-top: 40px;
}

.hero h1 {
  margin-bottom: 10px;
}

.hero p {
  font-size: 18px;
}

/* Listas */
ul {
  list-style: none;
  margin-top: 10px;
}

ul li {
  margin-bottom: 8px;
}

/* Tarjetas de servicios */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.service-card {
  background: #ffffff;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-5px);
}

/* Iconos */
.icon {
  font-size: 26px;
  font-weight: 700;
  color: #850000;
  margin-bottom: 12px;
}

.service-card h3 {
  margin-bottom: 10px;
}

/* Imagen con borde redondeado leve */
.feature-image {
  width: 100%;
  margin-top: 20px;
  border-radius: 10px;
  display: block;
}

/* Etapas registro de marcas ante INAPI */
.bloque-etapas-marcas {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 30px 0;
}

.etapa-marca {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  background: #f7f7f7;
  border-left: 4px solid #850000;
  border-radius: 12px;
  padding: 20px;
  box-sizing: border-box;
}

.etapa-marca:nth-child(even) {
  border-left-color: #004d47;
}

.numero-etapa-marca {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #850000;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
}

.etapa-marca:nth-child(even) .numero-etapa-marca {
  background: #004d47;
}

.contenido-etapa-marca h3 {
  margin: 0 0 8px;
  color: #353a40;
  font-size: 1.2rem;
  line-height: 1.3;
}

.contenido-etapa-marca p {
  margin: 0;
  color: #54595f;
  font-size: 1rem;
  line-height: 1.6;
}

@media (max-width: 767px) {
  .etapa-marca {
    gap: 14px;
    padding: 16px;
  }

  .numero-etapa-marca {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    font-size: 18px;
  }

  .contenido-etapa-marca h3 {
    font-size: 1.08rem;
  }

  .contenido-etapa-marca p {
    font-size: 0.96rem;
  }
}

/* Footer */
.footer {
  text-align: center;
  padding: 30px;
  font-size: 14px;
  color: #999;
}
```