/* ===== 基础重置 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #fff;
  color: #181E25;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.nav-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: #181E25;
  letter-spacing: -0.5px;
}

.tagline {
  font-size: 14px;
  color: #86909C;
  font-weight: 400;
}

/* ===== 主内容区 ===== */
main { flex: 1; }

.hero-section {
  padding: 16px 0 48px;
}

.hero-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 轮播图 ===== */
.hero-swiper {
  width: 100%;
  height: 548px;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

@media (min-width: 768px) {
  .hero-swiper { height: 582px; }
}

.swiper-slide {
  background: #fff;
}

.slide-content {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* 文字区域 */
.slide-text {
  text-align: center;
  padding: 40px 24px 0;
  position: relative;
  z-index: 10;
}

.slide-title {
  font-size: 48px;
  line-height: 52px;
  font-weight: 500;
  color: #181E25;
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 12px;
}

.slide-title .brand {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.slide-subtitle {
  font-size: 16px;
  color: #45515E;
  max-width: 640px;
  margin: 0 auto 24px;
  line-height: 1.5;
}

.slide-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  min-width: 160px;
  padding: 0 24px;
  border-radius: 60px;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: #181E25;
  color: #fff;
}
.btn-primary:hover {
  background: #2a3340;
  transform: translateY(-1px);
}

.btn-secondary {
  background: #fff;
  color: #181E25;
  border: 1px solid #181E25;
}
.btn-secondary:hover {
  background: #f5f5f5;
}

/* 图片区域 */
.slide-media {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px 16px;
}

.slide-media img,
.slide-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
}

/* Swiper 导航 */
.swiper-button-prev,
.swiper-button-next {
  width: 48px !important;
  height: 48px !important;
  border-radius: 50%;
  background: rgba(0,0,0,0.05);
  backdrop-filter: blur(12px);
  color: #fff !important;
  transition: all 0.3s ease;
}
.swiper-button-prev:hover,
.swiper-button-next:hover {
  background: rgba(0,0,0,0.15);
}
.swiper-button-prev::after,
.swiper-button-next::after {
  font-size: 18px !important;
  font-weight: 700;
}

/* Swiper 分页器 */
.swiper-pagination {
  bottom: 16px !important;
}

.swiper-pagination-bullet {
  width: 8px;
  height: 8px;
  background: rgba(66,66,66,0.3);
  opacity: 1;
  transition: all 0.3s ease;
  border-radius: 4px;
}
.swiper-pagination-bullet:hover {
  width: 16px;
  background: rgba(66,66,66,0.5);
}
.swiper-pagination-bullet-active {
  width: 24px !important;
  background: #424242 !important;
}

/* 加载状态 */
.banner-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #86909C;
  font-size: 14px;
}

/* ===== 页脚 ===== */
.site-footer {
  border-top: 1px solid rgba(0,0,0,0.06);
  padding: 24px;
}

.footer-inner {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.copyright {
  font-size: 13px;
  color: #86909C;
}

.admin-link {
  font-size: 13px;
  color: #667eea;
  transition: color 0.2s;
}
.admin-link:hover {
  color: #764ba2;
  text-decoration: underline;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
  .slide-title {
    font-size: 64px;
    line-height: 72px;
  }
  .slide-text { padding-top: 48px; }
}

@media (min-width: 1024px) {
  .slide-title {
    font-size: 72px;
    line-height: 80px;
  }
}