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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #ffffff;
  color: #1f1f1f;
  line-height: 1.6;
}

a {
  color: #0d6efd;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #0a52c6;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #e6e9ef;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #0d6efd;
}

.main-nav {
  display: flex;
  gap: clamp(12px, 3vw, 32px);
  font-weight: 600;
}

.main-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.main-nav a:hover {
  background-color: #0d6efd;
  color: #ffffff;
  transform: translateY(-1px);
}

.hero {
  background: linear-gradient(180deg, #f9fbff 0%, #ffffff 65%);
  padding: clamp(64px, 12vw, 120px) 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(32px, 6vw, 64px);
  align-items: center;
}

.hero-content h1 {
  margin: 0;
  font-size: clamp(2.8rem, 6vw, 4rem);
  line-height: 1.05;
  color: #0d1b3f;
}

.tagline {
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 0.85rem;
  color: #0d6efd;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  font-weight: 600;
  color: #2a3b58;
  margin: 20px 0 12px;
}

.hero-description {
  margin-bottom: 28px;
  color: #44526b;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(13, 110, 253, 0.22);
}

.btn-primary {
  background-color: #0d6efd;
  color: #ffffff;
  border-color: #0d6efd;
}

.btn-primary:hover {
  background-color: #0a52c6;
}

.btn-outline {
  background-color: transparent;
  color: #0d6efd;
  border-color: #0d6efd;
}

.btn-outline:hover {
  background-color: rgba(13, 110, 253, 0.1);
}

.btn-text {
  padding: 8px 0;
  color: #0d6efd;
  font-weight: 600;
}

.btn-text:hover {
  color: #0a52c6;
  transform: none;
  box-shadow: none;
}

.hero-figure {
  margin: clamp(32px, 6vw, 48px) auto 0;
  border-radius: 28px;
  overflow: hidden;
  width: min(960px, 92%);
  box-shadow: 0 24px 48px rgba(13, 27, 63, 0.18);
}

.section {
  padding: clamp(72px, 12vw, 120px) 0;
}

.section-muted {
  background-color: #f7f7f7;
}

.section-header {
  max-width: 680px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-kicker {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  font-weight: 700;
  color: #0d6efd;
  margin-bottom: 12px;
}

.section-header h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: #0d1b3f;
}

.section-header p {
  color: #4a5872;
}

.card-grid {
  display: grid;
  gap: clamp(20px, 4vw, 32px);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: #ffffff;
  border-radius: 24px;
  padding: clamp(24px, 3vw, 32px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.07);
  display: flex;
  flex-direction: column;
  gap: 16px;
  border: 1px solid #e6e9ef;
}

.card h3 {
  margin: 0;
  font-size: 1.35rem;
  color: #112040;
}

.card p {
  margin: 0;
  color: #4b5872;
}

.card-media figure {
  margin: -12px -12px 12px;
  border-radius: 20px;
  overflow: hidden;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.experiments-grid .card {
  padding: clamp(20px, 2.6vw, 28px);
}

.video-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(32px, 5vw, 48px);
  align-items: center;
}

.video-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
}

.video-placeholder {
  border-radius: 28px;
  border: 2px dashed rgba(13, 110, 253, 0.35);
  min-height: clamp(220px, 32vw, 320px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6b7b97;
  background: rgba(13, 110, 253, 0.04);
}

.site-footer {
  background-color: #0d1b3f;
  color: #f1f3f8;
  padding: 36px 0;
}

.site-footer p {
  margin: 0;
  text-align: center;
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    gap: 12px;
  }

  .main-nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-actions {
    width: 100%;
  }

  .btn {
    width: 100%;
  }
}

.simulacao-preview {
  display: block;
  margin: 0 auto;
}

.simulation-figure {
  margin: 32px auto 0;
  max-width: 100%;
  text-align: center;
}

.simulation-figure img {
  max-width: 100%;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
  margin: 0 auto;
}

.simulation-figure figcaption {
  margin-top: 16px;
  font-size: 0.95rem;
  color: #4a5872;
  font-style: italic;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}