/* ===== 产品介绍板块 ===== */

.product-intro {
  padding: var(--section-padding-y) 0;
  background: white;
  position: relative;
}

/* 三维度卡片 */
.intro-dimensions {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.intro-dim-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  height: 100%;
}

.intro-dim-card:hover {
  border-color: var(--brand-300);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.intro-dim-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--brand-100), var(--brand-50));
  color: var(--brand-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  flex-shrink: 0;
}

.intro-dim-icon svg {
  width: 26px;
  height: 26px;
  display: block;
}

.intro-dim-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--brand-50);
  color: var(--brand-700);
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 12px;
  align-self: flex-start;
}

.intro-dim-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.intro-dim-desc {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 20px;
}

.intro-dim-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: auto;
}

.intro-dim-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  white-space: normal;
  word-break: normal;
  writing-mode: horizontal-tb;
}

.intro-dim-check {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--brand-500);
  margin-top: 2px;
}

.intro-dim-check svg {
  width: 16px;
  height: 16px;
  display: block;
}

.intro-dim-points li span:last-child {
  flex: 1;
  display: block;
  white-space: normal;
  word-break: normal;
  text-align: left;
  line-height: 1.6;
  writing-mode: horizontal-tb;
  min-width: 0;
}

/* 智能排座亮点区 */
.intro-seating-highlight {
  margin-top: 72px;
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--brand-950) 100%);
  border-radius: 24px;
  padding: 56px 56px;
  position: relative;
  overflow: hidden;
  color: white;
}

.intro-seating-highlight::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 20%, transparent 70%);
  pointer-events: none;
}

.intro-seating-highlight::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: var(--brand-500);
  filter: blur(120px);
  opacity: 0.25;
  top: -150px;
  right: -100px;
  pointer-events: none;
}

.intro-seating-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}

.intro-seating-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-300);
  margin-bottom: 20px;
}

.intro-seating-tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-400);
  box-shadow: 0 0 8px var(--accent-400);
}

.intro-seating-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff, var(--brand-200));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.intro-seating-desc {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  margin-bottom: 32px;
}

.intro-seating-features {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.intro-seating-feat {
  display: flex;
  gap: 12px;
}

.intro-seating-feat-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-400);
  flex-shrink: 0;
  margin-top: 8px;
}

.intro-seating-feat-title {
  font-size: 15px;
  font-weight: 600;
  color: white;
  margin-bottom: 4px;
}

.intro-seating-feat-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.6;
}

/* 排座可视化示意图 */
.intro-seating-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.intro-seating-diagram {
  width: 100%;
  max-width: 440px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  backdrop-filter: blur(10px);
}

.seat-zone {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.seat-zone-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.seat-zone-vip .seat-zone-label { color: #fbbf24; }
.seat-zone-guest .seat-zone-label { color: var(--brand-300); }
.seat-zone-media .seat-zone-label { color: var(--accent-300); }

.seat-zone-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  justify-items: center;
}

.seat-zone-grid-wide {
  grid-template-columns: repeat(10, 1fr);
}

.seat {
  width: 22px;
  height: 22px;
  border-radius: 4px 4px 6px 6px;
  display: block;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s ease;
}

.seat-vip { background: linear-gradient(135deg, #fcd34d, #f59e0b); }
.seat-guest { background: linear-gradient(135deg, var(--brand-400), var(--brand-600)); }
.seat-media { background: linear-gradient(135deg, var(--accent-400), var(--accent-600)); }

.seat:hover {
  transform: scale(1.15);
}

.seat-stage {
  text-align: center;
  margin-top: 8px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px dashed rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
}

/* 浮动徽章 */
.intro-seating-badge {
  position: absolute;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  animation: seat-float 4s ease-in-out infinite;
  white-space: nowrap;
}

.intro-seating-badge.badge-left {
  top: 20%;
  left: -10px;
  border-left: 3px solid #fbbf24;
}

.intro-seating-badge.badge-right {
  bottom: 25%;
  right: -10px;
  animation-delay: 1.5s;
  border-left: 3px solid var(--brand-400);
}

@keyframes seat-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.badge-num {
  font-size: 16px;
  font-weight: 700;
  color: white;
}

.badge-label {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.6);
}

/* 响应式 */
@media (max-width: 960px) {
  .intro-dimensions {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 56px auto 0;
  }

  .intro-seating-highlight {
    padding: 40px 32px;
  }

  .intro-seating-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .intro-seating-visual {
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 600px) {
  .intro-seating-highlight {
    padding: 32px 24px;
    border-radius: 20px;
  }

  .intro-seating-title {
    font-size: 26px;
  }

  .seat {
    width: 18px;
    height: 18px;
  }
}