/* ============================================================
   Home Page Styles
   包含：Banner 轮播 / 分类入口 / Featured / About / Hot / 优势 / News
   ============================================================ */

/* ==================== 1. BANNER ==================== */
.banner {
  position: relative;
  background: var(--color-dark);
  overflow: hidden;
}

.banner-slider {
  position: relative;
  height: 640px;
}

.banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 800ms ease;
  pointer-events: none;
}

.banner-slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.banner-content {
  position: absolute;
  z-index: 2;
}

/* 控制器 */
.banner-control {
  position: absolute;
  top: 50%;
  width: 56px;
  height: 56px;
  margin-top: -28px;
  border-radius: var(--radius-circle);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  backdrop-filter: blur(8px);
  transition: all var(--transition-base);
}

.banner-control:hover {
  background: var(--color-primary);
  transform: scale(1.05);
}

.banner-control svg {
  width: 22px;
  height: 22px;
}

.banner-control-prev { left: 32px; }
.banner-control-next { right: 32px; }

.banner-dots {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-2);
  z-index: 3;
}

.banner-dot {
  width: 32px;
  height: 4px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  transition: all var(--transition-base);
  cursor: pointer;
}

.banner-dot.is-active {
  background: var(--color-accent);
  width: 48px;
}

/* ==================== 2. CATEGORIES ==================== */
.categories {
  padding-block: var(--space-20);
  background: var(--color-bg-2);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.category-card {
  position: relative;
  height: 320px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-slow);
}

.category-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-mask);
  transition: all var(--transition-base);
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.category-card:hover::after {
  background: linear-gradient(180deg, rgba(11,95,255,0.2) 0%, rgba(10,26,47,0.85) 100%);
}

.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.category-card:hover img {
  transform: scale(1.08);
}

.category-card-content {
  position: absolute;
  left: var(--space-6);
  right: var(--space-6);
  bottom: var(--space-6);
  z-index: 2;
}

.category-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--color-accent);
  letter-spacing: 4px;
  margin-bottom: var(--space-2);
  opacity: 0.9;
}

.category-name {
  font-size: var(--fs-28);
  font-weight: var(--fw-bold);
  color: #fff;
  margin-bottom: var(--space-2);
  line-height: 1.1;
}

.category-desc {
  font-size: var(--fs-13);
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-4);
}

.category-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-13);
  font-weight: var(--fw-semibold);
  color: #fff;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(8px);
  transition: all var(--transition-base);
}

.category-card:hover .category-card-link {
  background: var(--color-primary);
}

.category-card-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-base);
}

.category-card:hover .category-card-link svg {
  transform: translateX(4px);
}

/* ==================== 3. FEATURED PRODUCTS ==================== */
.featured {
  padding-block: var(--space-20);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  transition: all var(--transition-base);
}

.product-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}

.product-card-img {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--color-bg-2);
  overflow: hidden;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card-img img {
  transform: scale(1.08);
}

.product-card-actions {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: linear-gradient(180deg, rgba(10,26,47,0) 0%, rgba(10,26,47,0.65) 100%);
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--transition-base);
}

.product-card:hover .product-card-actions {
  opacity: 1;
  transform: translateY(0);
}

.product-card-action-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-text);
  border-radius: var(--radius-pill);
  font-size: var(--fs-12);
  font-weight: var(--fw-semibold);
  transition: all var(--transition-fast);
}

.product-card-action-btn:hover {
  background: var(--color-primary);
  color: #fff;
}

.product-card-action-btn svg {
  width: 12px;
  height: 12px;
}

.product-card-body {
  padding: var(--space-4);
}

.product-card-cat {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--fs-12);
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-2);
  letter-spacing: 0.5px;
}

.product-card-title {
  font-size: var(--fs-14);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  line-height: var(--lh-snug);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-3);
  min-height: 38px;
  transition: color var(--transition-fast);
}

.product-card-title:hover {
  color: var(--color-primary);
}

.product-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-border);
}

.product-card-sku {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--color-text-3);
}

.product-card-detail {
  font-size: var(--fs-13);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.product-card-detail svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

.product-card-detail:hover svg {
  transform: translateX(3px);
}

/* ==================== 4. ABOUT ==================== */
.about {
  padding-block: var(--space-20);
  background: var(--color-bg-2);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  aspect-ratio: 16 / 10;
}

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

.about-image-badge {
  position: absolute;
  bottom: var(--space-6);
  left: var(--space-6);
  background: rgba(10, 26, 47, 0.85);
  backdrop-filter: blur(8px);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
}

.about-image-badge strong {
  display: block;
  font-size: var(--fs-32);
  font-weight: var(--fw-extrabold);
  color: var(--color-accent);
  line-height: 1;
}

.about-image-badge span {
  font-size: var(--fs-13);
  color: rgba(255, 255, 255, 0.8);
}

.about-content .section-title {
  text-align: left;
  margin-bottom: var(--space-6);
}

.about-content .section-title-text {
  font-size: var(--fs-36);
}

.about-content .section-title-text::before {
  display: none;
}

.about-content .section-title-text::after {
  display: none;
}

.about-content .section-title-text {
  justify-content: flex-start;
}

.about-text {
  font-size: var(--fs-15);
  line-height: var(--lh-relaxed);
  color: var(--color-text-2);
  margin-bottom: var(--space-6);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  padding: var(--space-6) 0;
  margin-bottom: var(--space-6);
  border-block: 1px solid var(--color-border);
}

.about-stat {
  text-align: center;
}

.about-stat-num {
  font-size: var(--fs-32);
  font-weight: var(--fw-extrabold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.about-stat-label {
  font-size: var(--fs-13);
  color: var(--color-text-3);
}

.about-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ==================== 5. HOT PRODUCTS ==================== */
.hot {
  padding-block: var(--space-20);
  background: var(--color-bg-2);
}

.hot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

/* ==================== 6. ADVANTAGES ==================== */
.advantages {
  padding-block: var(--space-20);
  background: var(--color-dark);
  position: relative;
  overflow: hidden;
}

.advantages::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(11, 95, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(0, 194, 255, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

.advantages .section-title-text {
  color: #fff;
}

.advantages .section-title-sub {
  color: rgba(255, 255, 255, 0.7);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  position: relative;
  z-index: 2;
}

.advantage-card {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-5);
  text-align: center;
  backdrop-filter: blur(8px);
  transition: all var(--transition-base);
}

.advantage-card:hover {
  background: rgba(11, 95, 255, 0.12);
  border-color: rgba(11, 95, 255, 0.4);
  transform: translateY(-6px);
}

.advantage-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  margin-bottom: var(--space-5);
  border-radius: var(--radius-circle);
  background: var(--gradient-primary);
  box-shadow: 0 12px 32px rgba(11, 95, 255, 0.35);
  transition: transform var(--transition-base);
}

.advantage-card:hover .advantage-icon {
  transform: rotate(-8deg) scale(1.05);
}

.advantage-icon svg {
  width: 36px;
  height: 36px;
  fill: #fff;
}

.advantage-num {
  position: absolute;
  top: var(--space-3);
  right: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: rgba(255, 255, 255, 0.25);
  letter-spacing: 2px;
}

.advantage-title {
  font-size: var(--fs-18);
  font-weight: var(--fw-bold);
  color: #fff;
  margin-bottom: var(--space-3);
}

.advantage-desc {
  font-size: var(--fs-14);
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--lh-relaxed);
  margin-bottom: 0;
}

/* ==================== 7. NEWS ==================== */
.news {
  padding-block: var(--space-20);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.news-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.news-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}

.news-card-img {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.news-card:hover .news-card-img img {
  transform: scale(1.08);
}

.news-card-cat {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: 4px 12px;
  background: var(--gradient-primary);
  color: #fff;
  font-size: var(--fs-12);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-pill);
}

.news-card-body {
  padding: var(--space-5);
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--fs-12);
  color: var(--color-text-3);
  margin-bottom: var(--space-3);
}

.news-card-meta-divider {
  width: 3px;
  height: 3px;
  border-radius: var(--radius-circle);
  background: var(--color-border-2);
}

.news-card-title {
  font-size: var(--fs-16);
  font-weight: var(--fw-bold);
  line-height: var(--lh-snug);
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-3);
  transition: color var(--transition-fast);
}

.news-card-title:hover {
  color: var(--color-primary);
}

.news-card-excerpt {
  font-size: var(--fs-14);
  color: var(--color-text-2);
  line-height: var(--lh-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-4);
}

.news-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-13);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  transition: gap var(--transition-base);
}

.news-card-link:hover {
  gap: var(--space-3);
}

.news-card-link svg {
  width: 14px;
  height: 14px;
}