:root {
  /* 色彩系统 - 更现代的设计 */
  --primary-color: #2563eb;
  --primary-gradient: linear-gradient(135deg, #3b82f6, #1d4ed8);
  --secondary-color: #7c3aed;
  --background-color: #f8fafc;
  --card-background: #ffffff;
  --text-color: #1e293b;
  --subtle-text-color: #64748b;
  --border-color: #e2e8f0;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.15);
  --border-radius: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  font-size: 16px;
  line-height: 1.5;
}

.page-container {
  padding-bottom: 120px;
  min-height: 100vh;
}

/* 玻璃态头部 */
.header {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header__logo {
  position: relative;
}

.header__logo img {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  object-fit: cover;
  border: 2px solid var(--card-background);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.header__logo:hover img {
  transform: scale(1.05);
}

.header__info h1 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__info p {
  font-size: 14px;
  color: var(--subtle-text-color);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
}

.header__info p::before {
  content: '🕐';
  font-size: 12px;
}

/* 主要内容区域 */
.main-content {
  padding: 20px;
  max-width: 600px;
  margin: 0 auto;
}

/* 增强版轮播图 */
.banner-container {
  margin-bottom: 28px;
  position: relative;
}

.banner {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  gap: 16px;
  padding: 4px 0 20px 0;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.banner__item {
  flex: 0 0 calc(100% - 40px);
  scroll-snap-align: center;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  position: relative;
}

.banner__item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.banner__item img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.banner__item:hover img {
  transform: scale(1.05);
}

/* 轮播指示器 */
.banner-indicators {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
}

.banner-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border-color);
  cursor: pointer;
  transition: var(--transition);
}

.banner-indicator.active {
  width: 20px;
  border-radius: 10px;
  background: var(--primary-color);
}

/* 卡片设计增强 */
.content-card {
  background: var(--card-background);
  border-radius: var(--border-radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(226, 232, 240, 0.5);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.content-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.content-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-gradient);
}

.content-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.content-card__title::before {
  content: '📢';
  font-size: 16px;
}

.content-card__body {
  font-size: 15px;
  line-height: 1.7;
  color: var(--subtle-text-color);
}

.content-card__body p {
  margin-bottom: 12px;
}

.content-card__body p:last-child {
  margin-bottom: 0;
}

.content-card__image {
  width: 100%;
  border-radius: calc(var(--border-radius) - 4px);
  margin-top: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 图片公告样式 */
.announcement-image-card {
  position: relative;
}

.announcement-image-card::after {
  content: 'NEW';
  position: absolute;
  top: 15px;
  right: 15px;
  background: #ef4444;
  color: white;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

/* 悬浮操作按钮增强 */
.fab-container {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  background: linear-gradient(to top, rgba(248, 250, 252, 0.95) 60%, transparent);
  display: flex;
  justify-content: center;
  z-index: 1000;
  pointer-events: none;
}

.fab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 18px 36px;
  background: var(--primary-gradient);
  color: white;
  font-size: 17px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 50px;
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  min-width: 220px;
}

.fab::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: 0.5s;
}

.fab:hover::before {
  left: 100%;
}

.fab:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 15px 40px rgba(37, 99, 235, 0.4);
}

.fab:active {
  transform: translateY(-1px) scale(0.98);
}

.fab span {
  margin-left: 8px;
}

/* 页脚样式 */
.footer {
  text-align: center;
  padding: 28px 20px;
  font-size: 13px;
  color: #94a3b8;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(226, 232, 240, 0.5);
}

.footer p {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.footer p:last-child {
  margin-bottom: 0;
}

/* 响应式设计 */
@media (max-width: 480px) {
  .main-content {
    padding: 16px;
  }

  .banner__item {
    flex: 0 0 calc(100% - 32px);
  }

  .content-card {
    padding: 20px;
  }

  .fab {
    padding: 16px 28px;
    min-width: 200px;
  }
}

/* 加载动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.content-card, .banner__item {
  animation: fadeInUp 0.6s ease-out forwards;
}