:root {
  --azul: #0a1d3a;
  --azul-claro: #122b53;
  --dourado: #c89c3c;
  --branco: #ffffff;
  --cinza-claro: #f4f6f8;
  --texto: #263447;
  --sombra: 0 12px 30px rgba(10, 29, 58, 0.12);
  --largura: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--texto);
  background: var(--branco);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px max(5vw, calc((100vw - var(--largura)) / 2));
  color: var(--branco);
  background: rgba(10, 29, 58, 0.97);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  padding: 6px 9px;
  border: 1px solid var(--dourado);
  color: var(--dourado);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-name {
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.2;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
  font-size: 0.9rem;
  font-weight: 700;
}

.main-nav > a:not(.portal-button):hover {
  color: var(--dourado);
}

.portal-button {
  padding: 9px 14px;
  border-radius: 6px;
  color: var(--azul);
  background: var(--dourado);
}

.hero {
  min-height: 610px;
  display: flex;
  align-items: center;
  padding: 100px max(5vw, calc((100vw - var(--largura)) / 2));
  color: var(--branco);
  background:
    linear-gradient(115deg, rgba(10, 29, 58, 0.98), rgba(10, 29, 58, 0.77)),
    radial-gradient(circle at 88% 20%, rgba(200, 156, 60, 0.38), transparent 28%),
    var(--azul);
}

.hero-content {
  width: min(720px, 100%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--dourado);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 750px;
  margin-bottom: 20px;
  font-size: clamp(2.5rem, 5vw, 4.8rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 16px;
  color: var(--azul);
  font-size: clamp(2rem, 3.5vw, 3.1rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 10px;
  color: var(--azul);
  font-size: 1.25rem;
}

.hero-text {
  max-width: 650px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-block;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 800;
  transition: transform 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--azul);
  background: var(--dourado);
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--branco);
}

.section {
  max-width: var(--largura);
  margin: 0 auto;
  padding: 96px 5vw;
}

.section-intro {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-intro > p:last-child {
  max-width: 720px;
  font-size: 1.08rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  min-height: 190px;
  padding: 28px;
  border-top: 4px solid var(--dourado);
  border-radius: 8px;
  background: var(--cinza-claro);
  box-shadow: var(--sombra);
}

.card p {
  margin-bottom: 0;
}

.section-dark {
  max-width: none;
  padding-right: max(5vw, calc((100vw - var(--largura)) / 2));
  padding-left: max(5vw, calc((100vw - var(--largura)) / 2));
  color: var(--branco);
  background: var(--azul);
}

.section-dark h2 {
  color: var(--branco);
}

.section-dark .section-intro > p:last-child {
  color: rgba(255, 255, 255, 0.82);
}

.sponsors {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.sponsor {
  display: grid;
  min-height: 118px;
  place-items: center;
  padding: 18px;
  border: 1px solid #dde2e8;
  border-radius: 8px;
  color: var(--azul);
  background: var(--branco);
  font-size: 1.05rem;
  font-weight: 800;
  text-align: center;
}

.contact-section {
  text-align: center;
}

.contact-section .section-intro {
  margin-right: auto;
  margin-left: auto;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  padding: 26px max(5vw, calc((100vw - var(--largura)) / 2));
  color: rgba(255, 255, 255, 0.75);
  background: #061225;
  font-size: 0.86rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 850px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 12px 16px;
  }

  .cards,
  .sponsors {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .site-header {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .brand-name {
    font-size: 0.67rem;
  }

  .main-nav {
    font-size: 0.78rem;
  }

  .hero {
    min-height: 530px;
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .section {
    padding-top: 70px;
    padding-bottom: 70px;
  }
}