/* ============================================
   万星轮胎官网 - 首页样式（品质之路）
   ============================================ */

/* ========== 英雄区域 ========== */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--color-text-white);
}

.hero-road {
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.98), rgba(38, 50, 56, 0.94));
}

.hero-road::before {
  content: '';
  position: absolute;
  inset: -30% -30% 35% -30%;
  background: repeating-linear-gradient(120deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.08) 16px, transparent 16px, transparent 36px);
  opacity: 0.25;
  pointer-events: none;
}

.hero-road::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(8, 26, 45, 0.6) 100%);
  pointer-events: none;
}

.hero-overlay {
  position: relative;
  padding: var(--space-4xl) 0 var(--space-3xl);
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3xl);
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  max-width: 560px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 14px;
  border-radius: var(--border-radius-full);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.24);
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy h1 {
  font-size: var(--font-size-5xl);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.hero-copy p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.76);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-actions .btn {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--font-size-lg);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-top: var(--space-md);
}

.hero-stat {
  min-width: 140px;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius-lg);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.24);
  backdrop-filter: blur(8px);
}

.hero-stat strong {
  display: block;
  font-size: var(--font-size-3xl);
  margin-bottom: 4px;
}

.hero-stat span {
  font-size: var(--font-size-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.68);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  align-items: center;
}

.hero-visual-stage {
  position: relative;
  width: clamp(260px, 32vw, 360px);
  height: clamp(260px, 32vw, 360px);
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1200px;
}

.tire-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px dashed rgba(255, 255, 255, 0.35);
  animation: spin-slow 16s linear infinite;
}

.tire-ring--outer {
  width: 100%;
  height: 100%;
}

.tire-ring--inner {
  width: 70%;
  height: 70%;
  animation-duration: 12s;
  animation-direction: reverse;
}

.hero-tire {
  position: relative;
  width: 65%;
  filter: drop-shadow(0 20px 45px rgba(0, 0, 0, 0.4));
  transform: rotateY(-14deg) rotateX(8deg);
  transition: transform var(--transition-slow);
}

.hero-visual-stage:hover .hero-tire {
  transform: rotateY(-6deg) rotateX(4deg) translateY(-6px);
}

.hero-badge {
  position: absolute;
  right: -34px;
  bottom: 28px;
  padding: var(--space-sm) var(--space-lg);
  background: rgba(67, 160, 71, 0.9);
  color: var(--color-text-white);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 12px 24px rgba(67, 160, 71, 0.25);
  text-align: left;
  min-width: 150px;
}

.hero-badge span {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.7;
}

.hero-badge strong {
  display: block;
  font-size: var(--font-size-3xl);
  margin: 4px 0;
}

.hero-badge p {
  font-size: 12px;
  margin: 0;
  letter-spacing: 0.05em;
}

.hero-legend {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
}

.hero-legend span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 12px;
  border-radius: var(--border-radius-full);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ========== 产品3D展示墙 ========== */
.product-gallery {
  background: radial-gradient(circle at top, rgba(21, 101, 192, 0.08), transparent 45%), var(--color-background);
}

.product-3d-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-xl);
}

.product-3d-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding: var(--space-xl);
  border-radius: var(--border-radius-xl);
  background: var(--color-background-light);
  box-shadow: var(--box-shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  border: 1px solid rgba(21, 101, 192, 0.12);
  transform-style: preserve-3d;
}

.product-3d-card:hover {
  transform: translateY(-12px) rotateX(6deg) rotateY(-4deg);
  box-shadow: var(--box-shadow-xl);
}

.product-3d-stage {
  position: relative;
  width: 100%;
  height: 200px;
  display: grid;
  place-items: center;
  perspective: 1400px;
}

.product-3d-stage img {
  max-width: 88%;
  transform: rotateY(-18deg) translateZ(14px);
  transition: transform var(--transition-slow);
  filter: drop-shadow(0 18px 32px rgba(21, 101, 192, 0.28));
}

.product-3d-card:hover .product-3d-stage img {
  transform: rotateY(-6deg) translateZ(24px) translateY(-6px);
}

.product-3d-shadow {
  position: absolute;
  bottom: 22px;
  width: 70%;
  height: 28px;
  background: radial-gradient(circle, rgba(0, 0, 0, 0.22), rgba(0, 0, 0, 0));
  filter: blur(8px);
  transform: translateZ(-10px);
}

.product-3d-info h3 {
  font-size: var(--font-size-2xl);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
}

.product-3d-info p {
  color: var(--color-text-medium);
  line-height: var(--line-height-relaxed);
}

.product-3d-info ul {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-sm);
}

.product-3d-info li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-medium);
  padding: 10px 12px;
  border-radius: var(--border-radius-md);
  background: rgba(21, 101, 192, 0.06);
}

.product-3d-info li span {
  color: var(--color-primary-dark);
  font-weight: var(--font-weight-semibold);
}

.product-3d-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-primary-main);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.product-3d-link::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.product-3d-link:hover::after {
  transform: translateX(4px);
}

/* ========== 质量检测流程 ========== */
.quality-section {
  position: relative;
  overflow: hidden;
}

.quality-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(94, 146, 243, 0.25), transparent 55%);
  opacity: 0.6;
  pointer-events: none;
}

.quality-flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.quality-step {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-xl);
  padding: var(--space-xl);
  position: relative;
  min-height: 260px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.quality-step:hover {
  transform: translateY(-8px);
  border-color: rgba(67, 160, 71, 0.4);
}

.quality-step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-full);
  background: rgba(255, 255, 255, 0.15);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.quality-step h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.quality-step p {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.78);
}

.quality-metric {
  margin-top: var(--space-lg);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.quality-metric strong {
  font-size: var(--font-size-2xl);
  color: var(--color-secondary);
}

.quality-metric span {
  font-size: var(--font-size-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}

/* ========== 数字化服务 ========== */
.digital-services {
  background: var(--color-background);
}

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

.digital-card {
  padding: var(--space-xl);
  border-radius: var(--border-radius-xl);
  background: linear-gradient(160deg, rgba(21, 101, 192, 0.08), rgba(67, 160, 71, 0.06));
  border: 1px solid rgba(21, 101, 192, 0.12);
  box-shadow: var(--box-shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.digital-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--box-shadow-lg);
}

.digital-card h3 {
  color: var(--color-primary-dark);
  font-size: var(--font-size-2xl);
}

.digital-card p {
  color: var(--color-text-medium);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.digital-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-primary-main);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
}

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

.digital-link:hover::after {
  transform: translateX(6px);
}

/* ========== 全球网络 ========== */
.global-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2xl);
  align-items: center;
}

.global-map {
  position: relative;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--box-shadow-lg);
}

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

.global-map-overlay {
  position: absolute;
  bottom: 20px;
  left: 20px;
  padding: 10px 18px;
  border-radius: var(--border-radius-full);
  background: rgba(13, 71, 161, 0.85);
  color: var(--color-text-white);
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.global-info h2 {
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
}

.global-info p {
  color: var(--color-text-medium);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-xl);
}

.global-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.global-metric {
  min-width: 150px;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius-lg);
  background: rgba(21, 101, 192, 0.08);
  border: 1px solid rgba(21, 101, 192, 0.12);
}

.global-metric strong {
  display: block;
  font-size: var(--font-size-3xl);
  color: var(--color-primary-dark);
}

.global-metric span {
  font-size: var(--font-size-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-medium);
}

.global-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-sm);
}

.global-list li {
  font-size: var(--font-size-sm);
  color: var(--color-text-medium);
  line-height: var(--line-height-relaxed);
}

.global-list span {
  color: var(--color-primary-dark);
  font-weight: var(--font-weight-semibold);
}

/* ========== 客户评价 ========== */
.testimonials-section {
  position: relative;
}

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

.testimonial-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-xl);
  padding: var(--space-xl);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  box-shadow: var(--box-shadow-sm);
  min-height: 260px;
}

.testimonial-logo {
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
}

.testimonial-content {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

.testimonial-meta {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ========== CTA ========== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, rgba(21, 101, 192, 0.12), rgba(67, 160, 71, 0.12));
}

.cta-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  padding: var(--space-2xl);
  border-radius: var(--border-radius-xl);
  background: var(--color-background-light);
  box-shadow: var(--box-shadow-lg);
  border: 1px solid rgba(21, 101, 192, 0.12);
}

.cta-text h2 {
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
}

.cta-text p {
  color: var(--color-text-medium);
  line-height: var(--line-height-relaxed);
}

.cta-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ========== 动画 ========== */
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ========== 响应式调整 ========== */
@media (max-width: 1200px) {
  .product-3d-grid,
  .digital-grid,
  .testimonial-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quality-flow {
    grid-template-columns: repeat(3, minmax(200px, 1fr));
  }
}

@media (max-width: 992px) {
  .hero-grid,
  .global-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    align-items: flex-start;
  }

  .hero-badge {
    right: 12px;
  }

  .hero-stat {
    min-width: 120px;
  }

  .product-3d-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .quality-flow {
    grid-template-columns: repeat(2, minmax(200px, 1fr));
  }
}

@media (max-width: 768px) {
  .hero-overlay {
    padding: var(--space-3xl) 0 var(--space-2xl);
  }

  .hero-copy h1 {
    font-size: var(--font-size-4xl);
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    gap: var(--space-md);
  }

  .product-3d-card {
    padding: var(--space-lg);
  }

  .quality-flow {
    grid-template-columns: 1fr;
  }

  .digital-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }

  .cta-wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 576px) {
  .hero-eyebrow {
    font-size: 12px;
  }

  .hero-visual-stage {
    width: 240px;
    height: 240px;
  }

  .product-3d-stage {
    height: 180px;
  }

  .digital-card,
  .quality-step,
  .testimonial-card {
    padding: var(--space-lg);
  }

  .global-metrics {
    gap: var(--space-md);
  }

  .cta-wrap {
    padding: var(--space-xl);
  }
}