/* ========== PLATFORM OPEN PAGE STYLES ========== */

.platform-banner {
  background-image: linear-gradient(135deg, rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.35)),
    url('../images/hero.jpg');
  background-size: cover;
  background-position: center;
}

.platform-lead-content {
  max-width: 860px;
  margin: 0 auto var(--space-lg);
  text-align: center;
}

.platform-lead-text {
  font-size: 1.8rem;
  color: var(--color-text);
}

.platform-lead-text + .platform-lead-text {
  margin-top: var(--space-sm);
}

.platform-lead-actions {
  margin-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
}

.lead-chip {
  padding: 0.6rem 1.6rem;
  border-radius: 999px;
  background-color: var(--color-light);
  color: var(--color-text);
  font-weight: 600;
  letter-spacing: 0.05rem;
}

.platform-hero-image {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.platform-vision-grid,
.platform-feature-grid,
.platform-pickup-grid,
.materials-grid,
.platform-join-grid {
  display: grid;
  gap: var(--space-lg);
}

.platform-vision-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.platform-vision-card {
  background: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.platform-vision-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-md);
}

.platform-vision-card h3 {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-dark);
}

.platform-vision-card p {
  color: var(--color-text-light);
}

.platform-feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.platform-card {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.platform-card-image {
  width: 100%;
  height: 160px;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-md);
}

.platform-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.platform-card-icon {
  width: 5.6rem;
  height: 5.6rem;
  border-radius: 50%;
  margin: 0 auto var(--space-md);
  background: rgba(0, 160, 233, 0.1);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
}

.platform-card h3 {
  font-size: 1.8rem;
  margin-bottom: var(--space-xs);
}

.platform-card p {
  color: var(--color-text-light);
}

.platform-pickup-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.platform-pickup-card {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  border-top: 4px solid var(--color-primary);
}

.platform-pickup-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-md);
}

.pickup-label {
  display: inline-block;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.12rem;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.platform-pickup-card h3 {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.platform-pickup-card p {
  color: var(--color-text-light);
}

.platform-value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
}

.platform-value-card {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
}

.platform-value-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-md);
}

.platform-value-card h3 {
  font-size: 1.9rem;
  margin-bottom: var(--space-xs);
}

.platform-value-card p {
  color: var(--color-text-light);
}

.materials-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.material-card {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: var(--space-md);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.material-card img {
  height: 140px;
  width: 100%;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-md);
}

.material-card h3 {
  font-size: 1.6rem;
  margin-bottom: var(--space-xs);
}

.material-card p {
  color: var(--color-text-light);
  font-size: 1.4rem;
}

.platform-join-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.platform-join-card {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
}

.platform-join-card h3 {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.platform-join-card ul {
  list-style: disc;
  padding-left: 2rem;
  color: var(--color-text-light);
}

.platform-join-card ol {
  padding-left: 2rem;
  color: var(--color-text-light);
}

.platform-join-card li + li {
  margin-top: var(--space-xs);
}

.platform-join-media {
  margin-top: var(--space-lg);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.platform-join-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.platform-join-cta {
  margin-top: var(--space-lg);
  text-align: center;
}

.platform-section-cta {
  margin-top: var(--space-lg);
  text-align: center;
}

@media (max-width: 992px) {
  .platform-vision-grid,
  .platform-feature-grid,
  .platform-pickup-grid,
  .platform-value-grid,
  .materials-grid,
  .platform-join-grid {
    grid-template-columns: 1fr;
  }

  .platform-hero-image {
    border-radius: var(--border-radius-md);
  }
}

@media (max-width: 768px) {
  .platform-lead-text {
    font-size: 1.6rem;
  }

  .platform-join-media img {
    height: 220px;
  }
}