/* ============================================
   乘龙专用车官网 v2 - 首页专用
   ============================================ */

/* ============== Hero Banner轮播 ============== */
.hero-banner { position: relative; height: 600px; overflow: hidden; }
.hero-banner .swiper { width: 100%; height: 100%; }
.hero-banner .swiper-slide { position: relative; display: flex; align-items: center; justify-content: center; color: #fff; text-align: center; overflow: hidden; }
.hero-banner .slide-bg { position: absolute; inset: 0; z-index: 0; }
.hero-banner .slide-bg::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(0,51,102,.85), rgba(0,51,102,.4)); z-index: 1; }
.hero-banner .slide-bg svg { width: 100%; height: 100%; }
.hero-banner .slide-content { position: relative; z-index: 2; padding: 0 30px; max-width: 900px; }
.hero-banner .slide-content .tag { display: inline-block; padding: 6px 18px; border: 1px solid #ff6b35; color: #ff6b35; font-size: 13px; letter-spacing: 4px; margin-bottom: 24px; }
.hero-banner .slide-content h2 { font-size: 60px; font-weight: 700; margin-bottom: 20px; letter-spacing: 4px; }
.hero-banner .slide-content p { font-size: 18px; margin-bottom: 36px; opacity: .9; }
.hero-banner .slide-content .btns a { margin: 0 8px; }
.hero-banner .swiper-pagination-bullet { background: #fff; opacity: .5; }
.hero-banner .swiper-pagination-bullet-active { background: #ff6b35; opacity: 1; }

/* ============== 定位区（公司名+一句话定位）============== */
.brand-intro { background: #fff; padding: 80px 0 60px; text-align: center; }
.brand-intro .brand-title { font-size: 42px; color: #003366; font-weight: 600; margin-bottom: 24px; }
.brand-intro .brand-title span { color: #ff6b35; }
.brand-intro .brand-desc { font-size: 16px; color: #555; max-width: 800px; margin: 0 auto; line-height: 1.8; }

/* ============== 数据统计 4列 =============== */
.stats-section { background: #003366; padding: 60px 0; color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.stat-item { text-align: center; padding: 20px; border-right: 1px solid rgba(255,255,255,.1); }
.stat-item:last-child { border-right: none; }
.stat-item .icon { width: 56px; height: 56px; margin: 0 auto 16px; background: rgba(255,107,53,.15); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #ff6b35; font-size: 28px; }
.stat-item .label { font-size: 14px; opacity: .8; margin-bottom: 12px; }
.stat-item .value { font-size: 48px; font-weight: 700; color: #ff6b35; line-height: 1; }
.stat-item .unit { font-size: 14px; margin-left: 4px; opacity: .7; }
.stat-item .sub { font-size: 13px; opacity: .6; margin-top: 8px; }

/* ============== 公司简介（左文右图）============== */
.company-intro-section { background: #fff; padding: 80px 0; }
.company-intro-header { margin-bottom: 45px; }
.company-intro-header h2 { font-size: 38px; color: #222; font-weight: 600; margin-bottom: 10px; letter-spacing: 1px; }
.company-intro-header .en-subtitle { font-size: 14px; color: #999; letter-spacing: 3px; text-transform: uppercase; margin-bottom: 18px; }
.company-intro-header .line { width: 60px; height: 4px; background: #ff6b35; }
.company-intro-body { display: grid; grid-template-columns: 1.35fr 1fr; gap: 55px; align-items: start; }
.company-intro-text p { font-size: 15px; color: #555; line-height: 1.95; margin-bottom: 18px; text-align: justify; }
.company-intro-text strong { color: #003366; }
.company-intro-text h4 { font-size: 17px; color: #003366; font-weight: 600; margin: 32px 0 12px; padding-left: 14px; border-left: 4px solid #ff6b35; }
.company-intro-image { position: sticky; top: 100px; }
.company-intro-image .image-placeholder { width: 100%; aspect-ratio: 4/3; background: linear-gradient(135deg, #e8eef5, #d0dce8); border-radius: 4px; display: flex; align-items: center; justify-content: center; color: #7a8ba0; font-size: 18px; box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.company-intro-image .image-caption { text-align: center; font-size: 13px; color: #999; margin-top: 12px; }

/* ============== 新闻三栏 =============== */
.news-section { background: #f5f7fa; padding: 80px 0; }
.news-grid { display: grid; grid-template-columns: 1fr 1.4fr .8fr; gap: 30px; }

/* 左侧大图 */
.news-hot { background: #fff; border-radius: 4px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,.05); transition: all .3s; }
.news-hot:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,.1); }
.news-hot .news-img { height: 220px; background: linear-gradient(135deg, #003366, #0066aa); position: relative; overflow: hidden; }
.news-hot .news-img::after { content: "企业厂区"; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,.4); font-size: 24px; }
.news-hot .news-meta { padding: 16px 20px 0; font-size: 12px; color: #ff6b35; }
.news-hot .news-meta .date { color: #999; margin-left: 8px; }
.news-hot .news-body { padding: 14px 20px 20px; }
.news-hot .news-body h3 { font-size: 16px; color: #003366; margin-bottom: 8px; }
.news-hot .news-body p { font-size: 13px; color: #777; line-height: 1.6; }

/* 中间列表 */
.news-list { background: #fff; border-radius: 4px; padding: 20px; box-shadow: 0 2px 12px rgba(0,0,0,.05); }
.news-list-item { display: grid; grid-template-columns: 90px 1fr; gap: 16px; padding: 16px 0; border-bottom: 1px dashed #eee; }
.news-list-item:last-child { border-bottom: none; }
.news-list-item:hover { background: #fafbfc; padding-left: 8px; transition: all .25s; }
.news-date { text-align: center; background: #f5f7fa; padding: 10px; border-radius: 4px; }
.news-date .day { font-size: 28px; font-weight: 700; color: #003366; line-height: 1; }
.news-date .ym { font-size: 12px; color: #999; margin-top: 4px; }
.news-list-content h4 { font-size: 15px; color: #222; margin-bottom: 6px; }
.news-list-content p { font-size: 13px; color: #888; line-height: 1.5; }

/* 右侧分类卡 */
.news-categories { display: flex; flex-direction: column; gap: 16px; }
.news-cat-card { background: linear-gradient(135deg, #003366, #1a4d80); border-radius: 4px; height: calc((100% - 32px) / 3); min-height: 130px; padding: 24px; color: #fff; position: relative; overflow: hidden; cursor: pointer; transition: all .3s; }
.news-cat-card:nth-child(2) { background: linear-gradient(135deg, #ff6b35, #ff9966); }
.news-cat-card:nth-child(3) { background: linear-gradient(135deg, #1a4d80, #2d6ba8); }
.news-cat-card:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,.15); }
.news-cat-card h4 { font-size: 22px; margin-bottom: 8px; }
.news-cat-card p { font-size: 13px; opacity: .85; }
.news-cat-card .arrow { position: absolute; bottom: 16px; right: 20px; font-size: 24px; }

/* ============== 响应式 ============== */
@media (max-width: 992px) {
  .hero-banner { height: 450px; }
  .hero-banner .slide-content h2 { font-size: 36px; }
  .hero-banner .slide-content p { font-size: 14px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .news-grid { grid-template-columns: 1fr; }
  .company-intro-body { grid-template-columns: 1fr; gap: 35px; }
  .company-intro-image { position: static; }
  .company-intro-header h2 { font-size: 28px; }
  .brand-title { font-size: 28px; }
  .stat-item .value { font-size: 36px; }
}
@media (max-width: 768px) {
  .hero-banner { height: 380px; }
  .hero-banner .slide-content h2 { font-size: 24px; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,.1); padding-bottom: 30px; }
  .stat-item:last-child { border-bottom: none; }
}