*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { overflow-x: hidden; max-width: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink-muted);
  background: var(--color-paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.14;
  margin: 0 0 var(--space-2);
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 4.6vw, 4.2rem); }
h2 { font-size: clamp(1.7rem, 2.6vw, 2.3rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 var(--space-2); color: var(--color-ink-muted); }

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}
.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

section { padding: var(--space-6) 0; }

/* Botões — pílula sólida, sem sombra pronunciada */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.9em 2em;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.btn-primary {
  background: var(--color-primary-deep);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-primary); }

.btn-outline {
  background: transparent;
  color: var(--color-primary-deep);
  border-color: var(--color-primary-deep);
}
.btn-outline:hover { background: var(--color-primary-deep); color: var(--color-white); }

.btn-on-dark {
  background: var(--color-white);
  color: var(--color-primary-deep);
}
.btn-on-dark:hover { background: var(--color-band-soft); }

a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 3px solid var(--color-accent-ink);
  outline-offset: 3px;
}

/* Título de secção — alinhado à esquerda, sem etiqueta decorativa */
.section-title { margin-bottom: var(--space-5); max-width: 720px; }
.section-title.center { margin-left: auto; margin-right: auto; text-align: center; }

/* Bloco plano — imagem + texto + linha fina, sem sombra nem cantos arredondados */
.flat-item { display: flex; flex-direction: column; }
.flat-item img { width: 100%; aspect-ratio: 4/3; object-fit: cover; margin-bottom: var(--space-2); }
.flat-item h3 { margin-bottom: 0.5em; }
.flat-item p { font-size: 0.96rem; margin-bottom: 1em; }
.flat-item .read-link {
  display: inline-block;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
  padding-bottom: 0.9em;
  border-bottom: 2px solid var(--color-rule);
  width: 100%;
}

.grid {
  display: grid;
  gap: var(--space-4) var(--space-5);
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  section { padding: var(--space-5) 0; }
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}