/* =========================================================
   brief.css — Standalone brief article pages
   ========================================================= */

.brief-hero {
  padding-top: 120px;
  padding-bottom: 60px;
}

.brief-hero-back {
  margin-bottom: 20px;
}

.brief-back-link {
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.brief-back-link:hover {
  color: var(--cyan);
}

.brief-kicker {
  margin-bottom: 16px;
}

.brief-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  max-width: 800px;
  margin-bottom: 20px;
}

.brief-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* Body layout */
.brief-body-section {
  padding: 60px 0 80px;
}

.brief-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 60px;
  align-items: start;
}

/* Article content */
.brief-content {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  max-width: 680px;
}

.brief-content p {
  margin-bottom: 1.4em;
}

.brief-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin: 2.2em 0 0.7em;
}

.brief-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--cyan);
  margin: 1.6em 0 0.5em;
}

.brief-content ul {
  padding-left: 1.4em;
  margin-bottom: 1.4em;
}

.brief-content ul li {
  margin-bottom: 0.6em;
}

.brief-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Sidebar */
.brief-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.brief-sidebar-card {
  background: rgba(0, 230, 255, 0.04);
  border: 1px solid rgba(0, 230, 255, 0.12);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.brief-sidebar-card strong {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--cyan);
}

.brief-sidebar-card a:not(.btn) {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.brief-sidebar-card a:not(.btn):hover {
  color: var(--cyan);
}

.brief-sidebar-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* Mobile */
@media (max-width: 1024px) {
  .brief-container {
    grid-template-columns: 1fr;
  }

  .brief-sidebar {
    position: static;
  }
}