/* ============================================
   首页视觉重构样式
   ============================================ */

.hero-showcase {
  position: relative;
  padding: var(--spacing-5xl) 0 var(--spacing-4xl);
  background: radial-gradient(circle at 10% -10%, rgba(31, 189, 178, 0.25), transparent 60%),
              radial-gradient(circle at 85% 20%, rgba(47, 108, 234, 0.25), transparent 55%),
              var(--bg-white);
  overflow: hidden;
}

.hero-showcase::after {
  content: '';
  position: absolute;
  inset: auto -120px -160px auto;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(47, 108, 234, 0.15), transparent 70%);
  filter: blur(25px);
  opacity: 0.6;
  animation: heroGlow 16s ease-in-out infinite;
}

.hero-showcase .container {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: var(--spacing-5xl);
  align-items: center;
}

.hero-text {
  display: grid;
  gap: var(--spacing-2xl);
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-xl);
  border-radius: var(--radius-full);
  background: rgba(31, 189, 178, 0.1);
  color: var(--secondary-600);
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-text h1 {
  margin: 0;
  font-size: clamp(36px, 4.5vw, 54px);
  line-height: 1.15;
  color: var(--primary-900);
}

.hero-text h1 span {
  color: var(--primary-600);
}

.hero-text p {
  margin: 0;
  color: var(--text-light);
  font-size: var(--font-size-lg);
  max-width: 560px;
}

.hero-actions {
  display: inline-flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.hero-actions .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.hero-actions .btn-outline {
  border-color: rgba(18, 62, 164, 0.25);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: var(--spacing-lg);
  padding-top: var(--spacing-lg);
}

.hero-stats div {
  display: grid;
  gap: var(--spacing-xs);
}

.hero-stats strong {
  font-size: var(--font-size-3xl);
  font-family: var(--font-family-display);
  color: var(--primary-700);
}

.hero-stats span {
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-collage {
  position: relative;
  display: grid;
  gap: var(--spacing-lg);
}

.collage-card {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(12, 47, 128, 0.18);
}

.collage-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.collage-card figcaption {
  position: absolute;
  left: var(--spacing-lg);
  bottom: var(--spacing-lg);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  background: rgba(12, 47, 128, 0.75);
  color: var(--text-white);
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.collage-card.primary {
  aspect-ratio: 4 / 5;
}

.collage-card.secondary,
.collage-card.tertiary {
  aspect-ratio: 5 / 4;
  width: 70%;
}

.collage-card.secondary {
  justify-self: end;
  margin-top: -25%;
}

.collage-card.tertiary {
  margin-top: -15%;
}

.collage-badge {
  position: absolute;
  top: 50%;
  right: -20px;
  display: grid;
  gap: 6px;
  padding: var(--spacing-lg) var(--spacing-2xl);
  background: linear-gradient(135deg, var(--primary-600), var(--secondary-500));
  color: var(--text-white);
  border-radius: var(--radius-2xl);
  transform: rotate(-6deg);
  box-shadow: 0 22px 40px rgba(12, 47, 128, 0.3);
}

.collage-badge span:last-child {
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sector-cards {
  padding: var(--spacing-5xl) 0;
  background: var(--bg-white);
}

.sector-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-2xl);
}

.sector-item {
  background: var(--bg-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  border: 1px solid rgba(12, 47, 128, 0.08);
  box-shadow: var(--shadow-xxs);
  display: grid;
  gap: var(--spacing-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.sector-item:hover {
  transform: translateY(-6px);
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
}

.sector-icon {
  font-size: 32px;
}

.sector-item h3 {
  margin: 0;
  color: var(--primary-700);
}

.sector-item p {
  margin: 0;
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

.module-stack {
  padding: var(--spacing-5xl) 0;
  background: var(--bg-light);
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-2xl);
}

.module-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(12, 47, 128, 0.1);
  overflow: hidden;
  box-shadow: var(--shadow-xxs);
  display: grid;
}

.module-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.module-card > div {
  padding: var(--spacing-xl);
  display: grid;
  gap: var(--spacing-sm);
}

.module-card h4 {
  margin: 0;
  color: var(--primary-700);
}

.module-card p {
  margin: 0;
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

.case-gallery {
  padding: var(--spacing-5xl) 0;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-2xl);
}

.case-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-2xl);
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-sm);
}

.case-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.75);
  transition: transform var(--transition-base);
}

.case-item:hover img {
  transform: scale(1.05);
}

.case-caption {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: var(--spacing-3xl) var(--spacing-2xl);
  background: linear-gradient(180deg, rgba(5, 18, 42, 0) 0%, rgba(5, 18, 42, 0.9) 100%);
  color: var(--text-white);
  display: grid;
  gap: var(--spacing-xs);
}

.case-caption h3 {
  margin: 0;
}

.case-caption span {
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.78);
}

.insight-strip {
  padding: var(--spacing-5xl) 0;
  background: var(--bg-white);
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-2xl);
}

.insight-card {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(12, 47, 128, 0.1);
  background: var(--bg-light);
  padding: var(--spacing-2xl);
  display: grid;
  gap: var(--spacing-lg);
  min-height: 220px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.insight-card:hover {
  transform: translateY(-6px);
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
}

.insight-card h4 {
  margin: 0;
  color: var(--primary-700);
}

.insight-card p {
  margin: 0;
  color: var(--text-light);
}

.cta-banner {
  padding: var(--spacing-5xl) 0;
  background: linear-gradient(135deg, rgba(12, 47, 128, 0.94), rgba(19, 125, 140, 0.9));
  color: var(--text-white);
}

.cta-banner .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-2xl);
  flex-wrap: wrap;
}

.cta-content {
  max-width: 640px;
  display: grid;
  gap: var(--spacing-md);
}

.cta-content h2 {
  margin: 0;
  font-size: clamp(28px, 3.2vw, 36px);
}

.cta-content p {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
}

.cta-buttons {
  display: inline-flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.cta-buttons .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.cta-buttons .btn-outline {
  color: var(--text-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.cta-buttons .btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.16);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-full);
  background: rgba(47, 108, 234, 0.1);
  color: var(--primary-600);
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-heading {
  display: grid;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-3xl);
}

.section-heading h2 {
  margin: 0;
  color: var(--primary-900);
  font-size: clamp(28px, 3.2vw, 36px);
}

.section-leading {
  margin: 0;
  color: var(--text-light);
  font-size: var(--font-size-lg);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--primary-600);
  font-weight: var(--font-weight-medium);
}

.link-arrow::after {
  content: '→';
  transition: transform var(--transition-base);
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

@keyframes heroGlow {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.6;
  }
  50% {
    transform: translate(-30px, 20px) scale(1.08);
    opacity: 0.85;
  }
}

@media (max-width: 1200px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-collage {
    order: -1;
    justify-items: center;
  }

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

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

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

@media (max-width: 900px) {
  .collage-card.secondary,
  .collage-card.tertiary {
    width: 80%;
  }

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

@media (max-width: 768px) {
  .hero-showcase {
    padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  }

  .hero-actions,
  .hero-stats,
  .hero-cta,
  .cta-buttons {
    width: 100%;
  }

  .hero-actions .btn,
  .hero-cta .btn,
  .cta-buttons .btn {
    flex: 1;
    justify-content: center;
  }

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

  .sector-grid,
  .module-grid,
  .case-grid,
  .insight-grid {
    grid-template-columns: 1fr;
  }

  .collage-badge {
    position: static;
    transform: none;
    justify-self: center;
    margin-top: var(--spacing-lg);
  }
}

@media (max-width: 540px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .hero-chip {
    font-size: 12px;
  }

  .hero-text h1 {
    font-size: 32px;
  }
}