/* ============================================
   Spark Navigator Station - Full Redesign 2026
   ============================================ */

/* ============ 1. PAGE HERO HEADER ============ */
.spark-hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(150deg, #fff1f1 0%, #ffe4e4 40%, #ffd6d6 70%, #ffc9c9 100%);
  padding-top: var(--header-height);
}

/* 装饰圆圈 */
.spark-hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(220,38,38,0.10) 0%, transparent 70%);
  top: -150px;
  right: -100px;
  pointer-events: none;
  z-index: 0;
}

.spark-hero::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,0.08) 0%, transparent 70%);
  bottom: -100px;
  left: -80px;
  pointer-events: none;
  z-index: 0;
}

.spark-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-12) var(--space-6);
}

/* 顶部徽章 */
.spark-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: rgba(220,38,38,0.10);
  border: 1px solid rgba(220,38,38,0.22);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--red-700);
  margin-bottom: var(--space-6);
  animation: badgeFadeIn 0.8s ease both;
}

.spark-hero-badge i {
  color: var(--red-500);
  animation: flamePulse 1.6s ease-in-out infinite;
}

@keyframes flamePulse {
  0%, 100% { transform: scale(1) rotate(-3deg); }
  50% { transform: scale(1.25) rotate(3deg); }
}

@keyframes badgeFadeIn {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 主标题 */
.spark-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: var(--font-bold);
  color: var(--red-800);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
  animation: titleSlideIn 1s cubic-bezier(0.34,1.56,0.64,1) 0s both;
  text-shadow: 0 2px 16px rgba(185,28,28,0.12);
}

.spark-hero-title .typewriter-cursor {
  display: inline-block;
  width: 3px;
  height: 0.85em;
  background: var(--red-500);
  margin-left: 4px;
  vertical-align: middle;
  border-radius: 2px;
  animation: cursorBlink 1s step-end infinite;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes titleSlideIn {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* 副标题 */
.spark-hero-subtitle {
  font-size: var(--text-lg);
  color: var(--red-600);
  max-width: 560px;
  margin: 0 auto var(--space-10);
  line-height: var(--leading-relaxed);
  animation: subtitleFadeIn 1s ease 0s both;
  opacity: 0.85;
}

@keyframes subtitleFadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to   { opacity: 0.85; transform: translateY(0); }
}

/* 三模块图标横排 */
.spark-hero-modules {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  animation: modulesFadeIn 1s ease 0s both;
}

@keyframes modulesFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.spark-module-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(220,38,38,0.15);
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
  cursor: default;
  min-width: 90px;
}

.spark-module-badge:hover {
  background: rgba(255,255,255,0.92);
  border-color: rgba(220,38,38,0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(185,28,28,0.12);
}

.spark-module-badge .mod-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--red-600), var(--red-800));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(185,28,28,0.25);
}

.spark-module-badge .mod-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--red-700);
  letter-spacing: 0.04em;
}

/* 波浪底部分隔 */
.spark-hero-wave {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  z-index: 2;
}

.spark-hero-wave svg {
  display: block;
  width: 100%;
}

/* ============ 2. SECTION BACKGROUNDS (统一浅红系) ============ */
/* 原 section-dark → 改为浅红渐变，协调主背景 */
.section-light-red {
  background: linear-gradient(180deg, #fff8f8 0%, #fff1f1 50%, #ffe8e8 100%);
  position: relative;
}

.section-light-red::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(185,28,28,0.04) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(245,158,11,0.03) 0%, transparent 40%);
  pointer-events: none;
}

/* 浅红点网格装饰 */
.section-light-red .deco-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(185,28,28,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

/* 原 section-light 保持但微调 */
.section-light {
  background: linear-gradient(180deg, #ffffff 0%, #fff8f8 50%, #fff1f1 100%);
  position: relative;
}

.section-light::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(185,28,28,0.03) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(245,158,11,0.02) 0%, transparent 40%);
  pointer-events: none;
}

/* section标题统一色 */
.section-light-red .section-title,
.section-light .section-title {
  color: var(--red-800);
}

.section-light-red .section-subtitle,
.section-light .section-subtitle {
  color: var(--red-500);
}

/* ============ 3. HISTORY SCROLL (党史时期学习) ============ */
.history-scroll-section {
  padding: var(--space-20) 0 var(--space-16);
}

.history-scroll-header {
  text-align: center;
  margin-bottom: var(--space-12);
  position: relative;
  z-index: 1;
}

.history-scroll-header .section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3);
}

.history-scroll-header .section-subtitle {
  font-size: var(--text-lg);
  max-width: 560px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

.history-scroll-wrapper {
  position: relative;
  width: 100%;
}

.history-scroll-container {
  display: flex;
  gap: var(--space-6);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: var(--space-4) var(--space-6) var(--space-6);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.history-scroll-container::-webkit-scrollbar { display: none; }

/* 党史卡片 - 加图片支持，重新设计 */
.history-card {
  flex: 0 0 75vw;
  max-width: 680px;
  min-height: 340px;
  scroll-snap-align: center;
  background: #ffffff;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid rgba(220,38,38,0.12);
  box-shadow: 0 4px 24px rgba(185,28,28,0.08);
  transition: all 0.5s cubic-bezier(0.34,1.56,0.64,1);
  display: flex;
  flex-direction: column;
}

.history-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 20px 48px rgba(185,28,28,0.15), 0 0 0 1px rgba(220,38,38,0.2);
  border-color: rgba(220,38,38,0.3);
}

/* 卡片图片区 */
.history-card-img {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, var(--red-100), var(--red-200));
  flex-shrink: 0;
}

.history-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
  display: block;
}

.history-card:hover .history-card-img img {
  transform: scale(1.06);
}

/* 无图片时显示年份大字 */
.history-card-img.no-img {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--red-100) 0%, var(--red-200) 100%);
}

.history-card-img.no-img::after {
  content: attr(data-year);
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: var(--font-bold);
  color: rgba(185,28,28,0.18);
  letter-spacing: -0.02em;
}

/* 图片渐变遮罩 */
.history-card-img::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(to top, rgba(255,255,255,0.7), transparent);
  pointer-events: none;
}

/* 卡片内容区 */
.history-card-content {
  padding: var(--space-6) var(--space-8);
  flex: 1;
  position: relative;
}

/* 年份水印 */
.history-card-content::before {
  content: attr(data-year);
  position: absolute;
  top: var(--space-4);
  right: var(--space-6);
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: var(--font-bold);
  color: rgba(185,28,28,0.06);
  line-height: 1;
  pointer-events: none;
}

.history-card-period {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  background: linear-gradient(135deg, rgba(220,38,38,0.10), rgba(185,28,28,0.08));
  border: 1px solid rgba(220,38,38,0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--red-700);
  margin-bottom: var(--space-4);
  width: fit-content;
}

.history-card-period i { font-size: var(--text-xs); }

.history-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--red-900);
  margin-bottom: var(--space-3);
  line-height: var(--leading-tight);
}

.history-card p {
  font-size: var(--text-base);
  color: var(--gray-600);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
  max-width: 480px;
}

.history-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.history-card-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--red-50);
  border: 1px solid var(--red-100);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--red-600);
  font-weight: var(--font-medium);
  transition: all 0.3s ease;
}

.history-card-tag:hover {
  background: var(--red-100);
  border-color: var(--red-300);
  color: var(--red-800);
}

/* 滚动导航按钮 */
.scroll-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.scroll-nav-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(220,38,38,0.08);
  border: 1px solid rgba(220,38,38,0.18);
  color: var(--red-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  cursor: pointer;
  transition: all 0.3s ease;
}

.scroll-nav-btn:hover {
  background: var(--red-600);
  border-color: var(--red-600);
  color: #fff;
  transform: scale(1.1);
}

.scroll-dots { display: flex; align-items: center; gap: var(--space-2); }

.scroll-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(185,28,28,0.2);
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  padding: 0;
}

.scroll-dot.active {
  width: 28px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--red-500), var(--gold-500));
}

.scroll-dot:hover { background: rgba(185,28,28,0.4); }

/* ============ 4. STORY CARDS - 简洁优雅 ============ */
.stories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* 卡片外壳 */
.story-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: all 0.35s ease;
}

.story-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(185,28,28,0.12), 0 4px 12px rgba(0,0,0,0.08);
}

/* 图片区域 */
.story-card-media {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--red-100), var(--red-200));
}

.story-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.story-card:hover .story-card-media img {
  transform: scale(1.05);
}

/* 图片加载失败占位符 */
.story-card-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--ph-color1), var(--ph-color2));
}

.story-card-placeholder i {
  font-size: 2.5rem;
  color: rgba(255,255,255,0.4);
}

.story-card-media.is-placeholder .story-card-placeholder { display: flex; }
.story-card-media.is-placeholder img { display: none; }

/* 时期标签 - 右上角 */
.story-card-period {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(255,255,255,0.95);
  border-radius: var(--radius-full);
  font-size: 11px;
  color: var(--red-700);
  font-weight: var(--font-semibold);
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.story-card-period i {
  font-size: 10px;
}

/* 内容区域 */
.story-card-body {
  padding: var(--space-5);
}

.story-card-body h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--gray-900);
  margin-bottom: var(--space-2);
  line-height: var(--leading-tight);
}

/* 摘要 */
.story-card-excerpt {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--gray-600);
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 元信息标签 */
.story-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--gray-100);
}

.story-card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--gray-500);
}

.story-card-meta span i {
  font-size: 11px;
  color: var(--red-500);
}

/* 悬浮指示器 */
.story-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red-500), var(--red-700));
  transform: scaleX(0);
  transition: transform 0.35s ease;
}

.story-card:hover::after {
  transform: scaleX(1);
}

/* ============ 5. STORY MODAL - 浅红系 ============ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(127,29,29,0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: linear-gradient(160deg, #fff8f8 0%, #fff1f1 60%, #ffe8e8 100%);
  border-radius: var(--radius-2xl);
  max-width: 680px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.88) translateY(24px);
  transition: all 0.5s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: 0 32px 80px rgba(185,28,28,0.18), 0 0 0 1px rgba(220,38,38,0.12);
  border: 1px solid rgba(220,38,38,0.15);
}

.modal-overlay.active .modal-box {
  transform: scale(1) translateY(0);
}

/* 顶部红色装饰条 */
.modal-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red-600), var(--gold-400), var(--red-600));
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(220,38,38,0.08);
  border: 1px solid rgba(220,38,38,0.15);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
  color: var(--red-500);
  transition: all 0.3s ease;
  z-index: 10;
}

.modal-close:hover {
  background: rgba(220,38,38,0.15);
  border-color: rgba(220,38,38,0.35);
  color: var(--red-700);
  transform: rotate(90deg);
}

.modal-header {
  padding: var(--space-8) var(--space-8) 0;
  text-align: center;
}

.modal-header .modal-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: var(--text-3xl);
  color: var(--white);
  box-shadow: 0 8px 24px rgba(185,28,28,0.25);
  border: 3px solid rgba(255,255,255,0.6);
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--red-900);
  margin-bottom: var(--space-3);
}

.modal-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.modal-meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background: rgba(220,38,38,0.08);
  border: 1px solid rgba(220,38,38,0.12);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--red-700);
  font-weight: var(--font-medium);
}

.modal-meta-item i { color: var(--red-500); }

.modal-body {
  padding: 0 var(--space-8) var(--space-6);
}

.modal-body p {
  font-size: var(--text-base);
  color: var(--gray-700);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.modal-body .modal-highlight {
  background: linear-gradient(135deg, rgba(220,38,38,0.08), rgba(245,158,11,0.05));
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  border-left: 3px solid var(--red-500);
}

.modal-body .modal-highlight p {
  margin-bottom: 0;
  font-style: italic;
  color: var(--red-800);
  font-size: var(--text-lg);
  font-family: var(--font-display);
}

.modal-body .modal-section-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--red-800);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.modal-body .modal-section-title i { color: var(--gold-500); }

.modal-footer {
  padding: var(--space-4) var(--space-8);
  background: rgba(220,38,38,0.04);
  border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
  display: flex;
  justify-content: center;
  border-top: 1px solid rgba(220,38,38,0.08);
}

.modal-footer .btn {
  background: linear-gradient(135deg, var(--red-600), var(--red-700));
  color: #fff;
  border: none;
  padding: var(--space-3) var(--space-10);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  cursor: pointer;
  transition: all 0.3s ease;
}

.modal-footer .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(185,28,28,0.3);
}

/* ============ 6. HERO CARDS - 名片风 + 八边形头像 ============ */
.heroes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  position: relative;
  z-index: 1;
}

.hero-card {
  background: #ffffff;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid rgba(220,38,38,0.12);
  box-shadow: 0 2px 16px rgba(185,28,28,0.07);
  transition: all 0.5s cubic-bezier(0.34,1.56,0.64,1);
  cursor: pointer;
  position: relative;
}

/* 顶部彩色装饰条 */
.hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red-500), var(--gold-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.hero-card:hover::before { transform: scaleX(1); }

.hero-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 28px 56px rgba(185,28,28,0.14), 0 0 0 1px rgba(220,38,38,0.18);
  border-color: rgba(220,38,38,0.25);
}

/* 头像区域 */
.hero-card-header {
  padding: var(--space-6) var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  background: linear-gradient(180deg, var(--red-50) 0%, rgba(255,255,255,0) 100%);
}

/* 圆形头像 */
.hero-card-avatar {
  width: 88px;
  height: 88px;
  margin-bottom: var(--space-3);
  position: relative;
}

.hero-card-avatar img,
.hero-card-avatar .avatar-placeholder {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

.hero-card-avatar .avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--white);
}

/* 圆形光圈 */
.hero-card-avatar::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(220,38,38,0.25), rgba(245,158,11,0.2));
  z-index: -1;
  opacity: 0;
  transition: opacity 0.4s ease, inset 0.4s ease;
}

.hero-card:hover .hero-card-avatar::after {
  opacity: 1;
  inset: -6px;
}

/* 英雄卡片内容 */
.hero-card-body {
  padding: 0 var(--space-5) var(--space-6);
  text-align: center;
}

.hero-card-body h4 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-1);
  color: var(--red-900);
}

.hero-card-body .hero-title {
  font-size: var(--text-xs);
  color: var(--red-500);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
}

.hero-card-body .hero-title::before,
.hero-card-body .hero-title::after {
  content: '';
  width: 20px;
  height: 1px;
  background: rgba(220,38,38,0.3);
}

.hero-card-body p {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: var(--leading-relaxed);
}

/* 悬停时展开更多 */
.hero-card-more {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.hero-card:hover .hero-card-more {
  max-height: 60px;
}

.hero-card-more-btn {
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--red-50);
  border: 1px solid var(--red-200);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--red-600);
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: var(--font-medium);
}

.hero-card-more-btn:hover {
  background: var(--red-100);
  color: var(--red-800);
}

/* ============ 7 & 8. 高校 & 博物馆 - 图片卡片重设计 ============ */
.univ-grid,
.museum-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.univ-card,
.museum-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid var(--red-100);
  box-shadow: 0 2px 12px rgba(185,28,28,0.06);
  transition: all 0.45s cubic-bezier(0.34,1.56,0.64,1);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  position: relative;
}

.univ-card:hover,
.museum-card:hover {
  transform: translateY(-6px) scale(1.015);
  box-shadow: 0 16px 36px rgba(185,28,28,0.12), 0 0 0 1px rgba(220,38,38,0.2);
  border-color: var(--red-200);
}

/* 封面图片区 */
.card-cover {
  width: 100%;
  height: 130px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, var(--red-100), var(--red-200));
}

.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
  display: block;
}

.univ-card:hover .card-cover img,
.museum-card:hover .card-cover img {
  transform: scale(1.08);
}

/* 无图片降级：图标占位 */
.card-cover.no-img {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  color: var(--red-400);
}

/* 渐变遮罩 */
.card-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(127,29,29,0.28) 0%, transparent 60%);
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.univ-card:hover .card-cover::after,
.museum-card:hover .card-cover::after {
  opacity: 0.7;
}

/* 封面上的标签 */
.card-cover-tag {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: rgba(127,29,29,0.75);
  border-radius: var(--radius-full);
  font-size: 11px;
  color: #fff;
  font-weight: var(--font-semibold);
  backdrop-filter: blur(4px);
  z-index: 2;
}

/* 查看箭头 */
.card-cover-arrow {
  position: absolute;
  bottom: var(--space-2);
  right: var(--space-2);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  color: var(--red-600);
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.35s cubic-bezier(0.34,1.56,0.64,1);
  z-index: 2;
}

.univ-card:hover .card-cover-arrow,
.museum-card:hover .card-cover-arrow {
  opacity: 1;
  transform: translateY(0);
}

/* 卡片内容 */
.card-body {
  padding: var(--space-3) var(--space-3) var(--space-4);
  flex: 1;
}

.card-body h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
  color: var(--red-900);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  line-height: var(--leading-tight);
}

.card-body h4 .ext-icon {
  font-size: var(--text-xs);
  color: var(--red-400);
  opacity: 0;
  transition: all 0.3s ease;
  transform: translateX(-4px);
}

.univ-card:hover .card-body h4 .ext-icon,
.museum-card:hover .card-body h4 .ext-icon {
  opacity: 1;
  transform: translateX(0);
}

.card-body p {
  font-size: 11px;
  color: var(--gray-500);
  line-height: var(--leading-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-location {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--space-3);
  padding: 4px 10px;
  background: var(--red-50);
  border-radius: var(--radius-full);
  font-size: 11px;
  color: var(--red-500);
  font-weight: var(--font-medium);
}

.card-location i { font-size: 10px; }

/* ============ 9. RED CULTURE EXTENSION - 重布局 ============ */
.extension-section {
  padding-bottom: var(--space-32); /* 需求10：与页脚保持足够距离 */
}

.extension-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.ext-tab-btn {
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  border: 1px solid rgba(220,38,38,0.15);
  background: rgba(220,38,38,0.05);
  color: var(--red-500);
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.ext-tab-btn:hover {
  background: rgba(220,38,38,0.10);
  border-color: rgba(220,38,38,0.3);
  color: var(--red-700);
  transform: translateY(-2px);
}

.ext-tab-btn.active {
  background: linear-gradient(135deg, var(--red-600), var(--red-700));
  border-color: var(--red-600);
  color: #fff;
  box-shadow: 0 4px 16px rgba(185,28,28,0.3);
}

.ext-content {
  display: none;
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.5s ease;
}

.ext-content.active { display: block; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- 诗词卡片 ---- */
.poem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.poem-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--red-100);
  padding: var(--space-8);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(185,28,28,0.05);
}

.poem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red-500), var(--gold-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.poem-card:hover {
  border-color: var(--red-200);
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(185,28,28,0.10);
}

.poem-card:hover::before { transform: scaleX(1); }

.poem-card .poem-quote {
  font-size: var(--text-3xl);
  color: rgba(220,38,38,0.25);
  margin-bottom: var(--space-3);
  line-height: 1;
}

.poem-card h4 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-3);
  color: var(--red-800);
}

.poem-card .poem-text {
  font-size: var(--text-base);
  color: var(--gray-600);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-4);
  font-style: italic;
}

.poem-card .poem-author {
  font-size: var(--text-sm);
  color: var(--red-400);
  font-weight: var(--font-medium);
}

/* ---- 影视卡片 ---- */
.film-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.film-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--red-100);
  transition: all 0.4s cubic-bezier(0.34,1.56,0.64,1);
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(185,28,28,0.06);
}

.film-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 24px 48px rgba(185,28,28,0.14);
  border-color: var(--red-200);
}

.film-card-banner {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.film-card-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.film-card-banner.no-img {
  background: linear-gradient(135deg, var(--red-100), var(--red-200));
  font-size: 3rem;
  color: var(--red-400);
}

/* 播放图标覆盖 */
.film-play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(127,29,29,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.film-card:hover .film-play-overlay { opacity: 1; }

.film-play-overlay i {
  font-size: 2.5rem;
  color: rgba(255,255,255,0.9);
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.3));
}

.film-card-body {
  padding: var(--space-4) var(--space-4) var(--space-5);
}

.film-card-body h4 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
  color: var(--red-900);
}

.film-card-body p {
  font-size: var(--text-xs);
  color: var(--gray-400);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-3);
}

.film-card-platforms {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.film-platform-btn {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: var(--font-medium);
  cursor: pointer;
  border: 1px solid;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.film-platform-btn.bilibili {
  background: rgba(0,161,214,0.08);
  border-color: rgba(0,161,214,0.25);
  color: #00a1d6;
}

.film-platform-btn.bilibili:hover {
  background: rgba(0,161,214,0.15);
}

.film-platform-btn.iqiyi {
  background: rgba(0,163,0,0.08);
  border-color: rgba(0,163,0,0.25);
  color: #00a300;
}

.film-platform-btn.iqiyi:hover {
  background: rgba(0,163,0,0.15);
}

.film-platform-btn.youku {
  background: rgba(26,113,255,0.08);
  border-color: rgba(26,113,255,0.25);
  color: #1a71ff;
}

.film-platform-btn.youku:hover {
  background: rgba(26,113,255,0.15);
}

/* 平台选择弹窗 */
.platform-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: rgba(127,29,29,0.3);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
}

.platform-modal.active {
  opacity: 1;
  visibility: visible;
}

.platform-modal-box {
  background: linear-gradient(160deg, #fff8f8, #fff1f1);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  max-width: 400px;
  width: 100%;
  text-align: center;
  border: 1px solid rgba(220,38,38,0.15);
  box-shadow: 0 32px 80px rgba(185,28,28,0.2);
  transform: scale(0.88) translateY(16px);
  transition: all 0.45s cubic-bezier(0.34,1.56,0.64,1);
  position: relative;
  overflow: hidden;
}

.platform-modal.active .platform-modal-box {
  transform: scale(1) translateY(0);
}

.platform-modal-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red-600), var(--gold-400));
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.platform-modal-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(220,38,38,0.08);
  border: 1px solid rgba(220,38,38,0.15);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--red-400);
  transition: all 0.3s ease;
}

.platform-modal-close:hover {
  background: rgba(220,38,38,0.15);
  color: var(--red-700);
  transform: rotate(90deg);
}

.platform-modal-box h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--red-800);
  margin-bottom: var(--space-2);
}

.platform-modal-box p {
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin-bottom: var(--space-6);
}

.platform-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.platform-link-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-xl);
  text-decoration: none;
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.platform-link-btn i { font-size: var(--text-lg); }

.platform-link-btn.bilibili {
  background: rgba(0,161,214,0.08);
  border-color: rgba(0,161,214,0.2);
  color: #00a1d6;
}

.platform-link-btn.bilibili:hover {
  background: #00a1d6;
  color: #fff;
  transform: translateX(4px);
}

.platform-link-btn.iqiyi {
  background: rgba(0,163,0,0.08);
  border-color: rgba(0,163,0,0.2);
  color: #00a300;
}

.platform-link-btn.iqiyi:hover {
  background: #00a300;
  color: #fff;
  transform: translateX(4px);
}

.platform-link-btn.youku {
  background: rgba(26,113,255,0.08);
  border-color: rgba(26,113,255,0.2);
  color: #1a71ff;
}

.platform-link-btn.youku:hover {
  background: #1a71ff;
  color: #fff;
  transform: translateX(4px);
}

.platform-link-btn.tencent {
  background: rgba(18,150,219,0.08);
  border-color: rgba(18,150,219,0.2);
  color: #1296db;
}

.platform-link-btn.tencent:hover {
  background: #1296db;
  color: #fff;
  transform: translateX(4px);
}

/* ============ REVEAL ANIMATION ============ */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: all 0.7s cubic-bezier(0.34,1.56,0.64,1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }
.reveal.delay-4 { transition-delay: 0.4s; }
.reveal.delay-5 { transition-delay: 0.5s; }
.reveal.delay-6 { transition-delay: 0.6s; }
.reveal.delay-7 { transition-delay: 0.7s; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .stories-grid { grid-template-columns: repeat(2, 1fr); }
  .heroes-grid  { grid-template-columns: repeat(2, 1fr); }
  .univ-grid,
  .museum-grid  { grid-template-columns: repeat(2, 1fr); }
  .poem-grid    { grid-template-columns: 1fr; }
  .film-grid    { grid-template-columns: repeat(2, 1fr); }
  .history-card { flex: 0 0 88vw; }
}

@media (max-width: 768px) {
  .spark-hero-modules { gap: var(--space-3); }
  .spark-module-badge { min-width: 72px; padding: var(--space-3); }
  .stories-grid,
  .heroes-grid,
  .univ-grid,
  .museum-grid,
  .film-grid    { grid-template-columns: 1fr; }
  .history-card { flex: 0 0 92vw; }
  .history-card h3 { font-size: var(--text-xl); }
  .extension-tabs { gap: var(--space-2); }
  .ext-tab-btn  { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }
  .modal-box    { max-height: 92vh; border-radius: var(--radius-xl); }
  .modal-header, .modal-body, .modal-footer { padding-left: var(--space-5); padding-right: var(--space-5); }
  .scroll-nav-btn { width: 40px; height: 40px; }
}