:root {
  --base: #fbfbfb;
  --primario: #f80315;
  --acento-1: #fdcd00;
  --acento-2: #204c8b;
  --fondo: #1853a1;
  --texto: #1d1d1b;
  --superficie: #ffffff;
  --linea: #e3e8f0;
  --suave: #44506a;
  --sombra: 0 16px 40px rgba(24, 83, 161, 0.14);
  --sombra-suave: 0 8px 22px rgba(24, 83, 161, 0.10);
  --radio: 22px;
  --radio-sm: 14px;
  --rail: 118px;
  --head-h: 74px;
  --fuente-titulo: 'Archivo', 'Segoe UI', system-ui, sans-serif;
  --fuente-cuerpo: 'Figtree', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  padding-bottom: 96px;
  background-color: var(--base);
  color: var(--texto);
  font-family: var(--fuente-cuerpo);
  font-size: 1rem;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .brand-main, .foot-name, .hero-title, .section-title, .block-title, .content-title, .rail-title, .cta-title, .invite-kicker, .guide-txt strong {
  font-family: var(--fuente-titulo);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
.btn:focus-visible {
  outline: 3px solid var(--primario);
  outline-offset: 2px;
}

.read-progress {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1080;
  height: 4px;
  background-color: rgba(24, 83, 161, 0.12);
}

.read-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primario), var(--acento-1), var(--acento-2));
  transition: width 0.12s linear;
}

.site-head {
  z-index: 1030;
  min-height: var(--head-h);
  border-bottom: 2px solid var(--fondo);
  background-color: rgba(251, 251, 251, 0.96);
  backdrop-filter: blur(10px);
}

.head-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 0.55rem;
  padding-bottom: 0.55rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
  text-decoration: none;
}

.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 45px;
  overflow: hidden;
  border: 1px solid var(--linea);
  border-radius: 12px;
  background-color: var(--fondo);
}

.brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.02;
}

.brand-main {
  color: var(--texto);
  font-size: 1.06rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.brand-sub {
  color: var(--primario);
  font-family: var(--fuente-cuerpo);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.head-actions {
  display: flex;
  gap: 0.4rem;
}

.head-label {
  display: none;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.icon-fb {
  background-color: var(--fondo);
  color: var(--superficie);
}

.icon-fb:hover {
  background-color: var(--primario);
  color: var(--superficie);
}

.icon-mail {
  border-color: var(--linea);
  background-color: var(--superficie);
  color: var(--acento-2);
}

.icon-mail:hover {
  border-color: var(--acento-2);
  background-color: var(--acento-2);
  color: var(--superficie);
}

.rail-nav {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1035;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  width: var(--rail);
  height: 100vh;
  padding: 0.9rem 0.55rem;
  background: linear-gradient(180deg, var(--fondo), var(--acento-2));
  box-shadow: 4px 0 24px rgba(24, 83, 161, 0.22);
}

.rail-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 0.5rem;
  border-radius: 14px;
  background-color: var(--acento-1);
  color: var(--acento-2);
  font-size: 1.4rem;
}

.rail-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  width: 100%;
  padding: 0.6rem 0.2rem;
  border-radius: var(--radio-sm);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-align: center;
  text-decoration: none;
  transition: background-color 0.22s ease, color 0.22s ease;
}

.rail-link i {
  font-size: 1.3rem;
}

.rail-link:hover {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--superficie);
}

.rail-link.is-active {
  background-color: var(--acento-1);
  color: var(--acento-2);
  box-shadow: var(--sombra-suave);
}

.rail-spacer {
  flex: 1 1 auto;
}

.rail-fb:hover {
  background-color: var(--primario);
  color: var(--superficie);
}

.rail-mail:hover {
  background-color: var(--superficie);
  color: var(--acento-2);
}

.thumb-nav {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1040;
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  gap: 0.15rem;
  padding: 0.35rem 0.4rem calc(0.35rem + env(safe-area-inset-bottom, 0px));
  border-top: 2px solid var(--acento-1);
  background-color: var(--fondo);
  box-shadow: 0 -8px 24px rgba(24, 83, 161, 0.26);
}

.thumb-link {
  display: flex;
  flex: 1 1 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  padding: 0.4rem 0.15rem;
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: background-color 0.22s ease, color 0.22s ease;
}

.thumb-link i {
  font-size: 1.2rem;
}

.thumb-link.is-active {
  background-color: var(--acento-1);
  color: var(--acento-2);
}

.thumb-fb.is-active,
.thumb-mail.is-active {
  background-color: rgba(255, 255, 255, 0.16);
  color: var(--superficie);
}

.section {
  padding: 2.4rem 0;
}

.section-hero {
  padding-top: 1.8rem;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background-color: var(--acento-1);
  color: var(--acento-2);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kicker-alt {
  background-color: rgba(32, 76, 139, 0.1);
  color: var(--acento-2);
}

.hero-title {
  margin: 0.85rem 0 0;
  color: var(--texto);
  font-size: clamp(2.2rem, 9vw, 3.6rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.hero-title .accent {
  color: var(--primario);
}

.hero-lead {
  margin-top: 0.9rem;
  color: var(--suave);
  font-size: 1.06rem;
  font-weight: 500;
}

.invite-block {
  margin-top: 1.3rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--linea);
  border-left: 5px solid var(--primario);
  border-radius: var(--radio-sm);
  background-color: var(--superficie);
  box-shadow: var(--sombra-suave);
}

.invite-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 0.5rem;
  color: var(--primario);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.invite-text {
  margin: 0;
  color: var(--texto);
  font-size: 0.98rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.btn-fb,
.btn-mail {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.62rem 1.1rem;
  border: 2px solid transparent;
  border-radius: 999px;
  font-family: var(--fuente-cuerpo);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.18s ease, background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.btn-fb {
  background-color: var(--primario);
  color: var(--superficie);
}

.btn-fb:hover {
  background-color: var(--fondo);
  color: var(--superficie);
  transform: translateY(-2px);
}

.btn-mail {
  border-color: var(--acento-2);
  background-color: var(--superficie);
  color: var(--acento-2);
}

.btn-mail:hover {
  background-color: var(--acento-2);
  color: var(--superficie);
  transform: translateY(-2px);
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.1rem;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.38rem 0.75rem;
  border: 1px solid var(--linea);
  border-radius: 999px;
  background-color: var(--superficie);
  color: var(--suave);
  font-size: 0.78rem;
  font-weight: 600;
}

.meta-chip i {
  color: var(--acento-2);
}

.guide {
  margin-top: 1.6rem;
  overflow: hidden;
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  background-color: var(--superficie);
  box-shadow: var(--sombra-suave);
}

.guide-summary {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.2rem;
  color: var(--texto);
  font-size: 0.95rem;
  font-weight: 700;
  list-style: none;
  cursor: pointer;
}

.guide-summary::-webkit-details-marker {
  display: none;
}

.guide-summary i:first-child {
  color: var(--primario);
  font-size: 1.15rem;
}

.guide-caret {
  margin-left: auto;
  color: var(--acento-2);
  transition: transform 0.25s ease;
}

.guide.is-open .guide-caret {
  transform: rotate(180deg);
}

.guide-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  padding: 0 1.2rem 1.2rem;
}

.guide-step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--linea);
  border-radius: var(--radio-sm);
  color: var(--texto);
  text-decoration: none;
  transition: border-color 0.22s ease, background-color 0.22s ease;
}

.guide-step:hover {
  border-color: var(--acento-2);
  background-color: rgba(24, 83, 161, 0.06);
}

.guide-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 12px;
  background-color: var(--acento-1);
  color: var(--acento-2);
  font-size: 1.1rem;
}

.guide-txt {
  display: flex;
  flex-direction: column;
  color: var(--suave);
  font-size: 0.9rem;
}

.guide-txt strong {
  color: var(--texto);
  font-size: 0.98rem;
  font-weight: 700;
}

.section-metropoli {
  border-top: 1px solid var(--linea);
  border-bottom: 1px solid var(--linea);
  background-color: rgba(24, 83, 161, 0.045);
}

.section-head {
  max-width: 46rem;
  margin-bottom: 1.2rem;
}

.section-title {
  margin: 0.7rem 0 0;
  color: var(--texto);
  font-size: clamp(1.7rem, 5.6vw, 2.5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.015em;
}

.section-sub {
  margin: 0.5rem 0 0;
  color: var(--suave);
  font-size: 1rem;
  font-weight: 500;
}

.frame {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  background-color: var(--superficie);
  box-shadow: var(--sombra);
}

.frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.frame-portada {
  aspect-ratio: 4 / 3;
}

.frame-banner,
.frame-cierre {
  aspect-ratio: 16 / 9;
  margin-top: 0.4rem;
}

.frame-square {
  aspect-ratio: 1 / 1;
}

.block-title {
  margin: 0 0 0.9rem;
  color: var(--acento-2);
  font-size: clamp(1.35rem, 4.2vw, 1.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.block-title i {
  color: var(--primario);
}

.body-copy {
  margin: 0 0 1rem;
  color: var(--texto);
  font-size: 1rem;
}

.body-copy:last-child {
  margin-bottom: 0;
}

.cards-heading {
  margin-bottom: 1.2rem;
}

.rail-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  color: var(--texto);
  font-size: clamp(1.25rem, 4vw, 1.6rem);
  font-weight: 800;
  line-height: 1.15;
}

.rail-title i {
  color: var(--primario);
}

.rail-sub {
  margin: 0.35rem 0 0;
  color: var(--suave);
  font-size: 0.94rem;
}

.content-card {
  position: relative;
  height: 100%;
  padding: 1.35rem 1.2rem 1.2rem;
  overflow: hidden;
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  background-color: var(--superficie);
  box-shadow: var(--sombra-suave);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.content-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--primario), var(--acento-1), var(--acento-2));
}

.content-card:hover {
  transform: translateY(-4px);
  border-color: var(--acento-2);
  box-shadow: var(--sombra);
}

.content-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 0.85rem;
  border-radius: 16px;
  background-color: var(--acento-1);
  color: var(--acento-2);
  font-size: 1.45rem;
}

.content-title {
  margin: 0 0 0.5rem;
  color: var(--texto);
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.22;
}

.content-text {
  margin: 0 0 1rem;
  color: var(--suave);
  font-size: 0.94rem;
}

.content-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--primario);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.closing-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
  margin-top: 3rem;
  align-items: center;
}

.closing-frame {
  margin-top: 0;
}

.cta-final {
  position: relative;
  margin-top: 3rem;
  padding: 2rem 1.4rem;
  border-radius: var(--radio);
  background: linear-gradient(135deg, var(--fondo), var(--acento-2));
  color: var(--superficie);
  text-align: center;
  box-shadow: var(--sombra);
}

.cta-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 0.85rem;
  border-radius: 16px;
  background-color: var(--acento-1);
  color: var(--acento-2);
  font-size: 1.6rem;
}

.cta-title {
  margin: 0;
  color: var(--superficie);
  font-size: clamp(1.35rem, 4.6vw, 1.9rem);
  font-weight: 900;
  line-height: 1.12;
}

.cta-text {
  max-width: 52rem;
  margin: 0.7rem auto 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
}

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

.cta-final .btn-fb {
  background-color: var(--primario);
  color: var(--superficie);
}

.cta-final .btn-fb:hover {
  background-color: var(--superficie);
  color: var(--primario);
}

.cta-final .btn-mail {
  border-color: rgba(255, 255, 255, 0.5);
  background-color: transparent;
  color: var(--superficie);
}

.cta-final .btn-mail:hover {
  border-color: var(--acento-1);
  background-color: var(--acento-1);
  color: var(--acento-2);
}

.cta-mail {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1rem;
  color: var(--acento-1);
  font-size: 0.92rem;
  font-weight: 700;
  word-break: break-word;
}

.site-foot {
  margin-top: 2.6rem;
  padding: 2.2rem 0 2.6rem;
  border-top: 4px solid var(--fondo);
  background-color: var(--superficie);
}

.foot-logo {
  width: 88px;
  height: 66px;
  padding: 0.35rem;
  border: 1px solid var(--linea);
  border-radius: 14px;
  background-color: var(--fondo);
  object-fit: contain;
}

.foot-name {
  margin: 0.8rem 0 0.4rem;
  color: var(--texto);
  font-size: 1.25rem;
  font-weight: 900;
}

.foot-text {
  color: var(--suave);
  font-size: 0.93rem;
}

.foot-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--linea);
}

.foot-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--texto);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.foot-nav a:hover {
  color: var(--primario);
}

.foot-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.foot-mail {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1rem;
  color: var(--acento-2);
  font-size: 0.9rem;
  font-weight: 700;
  word-break: break-word;
}

.foot-legal {
  margin-top: 1.8rem;
  padding-top: 1rem;
  border-top: 1px solid var(--linea);
  color: var(--suave);
  font-size: 0.8rem;
}

@media (min-width: 576px) {
  .head-label {
    display: inline;
  }

  .guide-body {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .section {
    padding: 3rem 0;
  }

  .section-hero {
    padding-top: 2.4rem;
  }

  .invite-block {
    padding: 1.3rem 1.5rem;
  }

  .cta-final {
    padding: 2.4rem 2rem;
  }
}

@media (min-width: 992px) {
  body {
    padding-bottom: 0;
    padding-left: var(--rail);
  }

  .section {
    padding: 3.8rem 0;
  }

  .section-hero {
    padding-top: 3rem;
  }

  .closing-block {
    grid-template-columns: 1.15fr 1fr;
  }

  .cta-final {
    padding: 2.8rem 2.4rem;
  }
}