:root {
  --pt-primary: #b91c1c;
  --pt-primary-dark: #8b1111;
  --pt-accent: #2287c9;
  --pt-text: #333;
  --pt-muted: #666;
  --pt-bg: #f5f5f5;
  --pt-container: 1200px;
}

* { box-sizing: border-box; }
body.pt-platform { margin: 0; font-family: "Microsoft YaHei", Arial, sans-serif; color: var(--pt-text); background: #fff; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--pt-primary); }

.pt-container { width: var(--pt-container); max-width: 100%; margin: 0 auto; padding: 0 15px; }
.pt-row { display: flex; flex-wrap: wrap; margin: 0 -12px; }
.pt-col { padding: 0 12px; }
.pt-col-5 { width: 41.666%; }
.pt-col-6 { width: 50%; }
.pt-col-7 { width: 58.333%; }

.pt-header { position: absolute; top: 0; left: 0; right: 0; z-index: 100; background: rgba(0,0,0,.35); }
.pt-header-inner { width: var(--pt-container); max-width: 100%; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 12px 15px; }
.pt-logo a { color: #fff; font-size: 20px; font-weight: bold; }
.pt-nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px; }
.pt-nav-list li a { display: block; padding: 8px 14px; color: #fff; font-size: 15px; border-radius: 2px; }
.pt-nav-list li a:hover { background: rgba(255,255,255,.15); color: #fff; }

.pt-hero { position: relative; min-height: 480px; overflow: hidden; }
.pt-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; transform: scale(1.02); }
.pt-hero-overlay { position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(0,0,0,.15), rgba(0,0,0,.45)); }
.pt-hero-content { position: relative; z-index: 2; padding-top: 120px; min-height: 480px; }
.pt-hero-swiper .swiper-slide img { width: 100%; height: 480px; object-fit: cover; display: block; }

.pt-section { padding: 48px 0; }
.pt-section:nth-child(even) { background: var(--pt-bg); }
.pt-section-head { margin-bottom: 24px; }
.pt-section-head.center { text-align: center; }
.pt-section-head .en { display: block; font-size: 13px; letter-spacing: 2px; color: var(--pt-muted); text-transform: uppercase; }
.pt-section-head h2 { margin: 6px 0 0; font-size: 28px; color: var(--pt-primary); font-weight: 700; }

.pt-news-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.pt-news-card { background: #fff; border: 1px solid #eee; border-radius: 6px; padding: 16px; transition: box-shadow .2s; }
.pt-news-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.pt-news-card h3 { margin: 0 0 8px; font-size: 16px; line-height: 1.5; }
.pt-news-card p { margin: 0; color: var(--pt-muted); font-size: 13px; }

.pt-featured-video { display: block; position: relative; border-radius: 8px; overflow: hidden; background: #111; }
.pt-featured-video img { width: 100%; display: block; aspect-ratio: 16/9; object-fit: cover; }
.pt-featured-video h3 { position: absolute; left: 0; right: 0; bottom: 0; margin: 0; padding: 12px 16px; color: #fff; background: linear-gradient(transparent, rgba(0,0,0,.75)); font-size: 16px; }
.pt-play { position: absolute; left: 50%; top: 45%; width: 56px; height: 56px; margin: -28px 0 0 -28px; border-radius: 50%; background: rgba(185,28,28,.9); }
.pt-play:after { content: ""; position: absolute; left: 22px; top: 16px; border: 12px solid transparent; border-left: 18px solid #fff; }

.pt-honor-carousel { overflow: hidden; padding: 8px 0; }
.pt-honor-track { display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; }
.pt-honor-item { flex: 0 0 180px; scroll-snap-align: start; background: #fff; border: 1px solid #eee; border-radius: 6px; overflow: hidden; }
.pt-honor-item img { width: 100%; height: 240px; object-fit: cover; display: block; }

.pt-news-date-list { list-style: none; margin: 0; padding: 0; }
.pt-news-date-list li { padding: 10px 0; border-bottom: 1px dashed #ddd; display: flex; gap: 12px; align-items: center; }
.pt-news-date-list li.featured { align-items: flex-start; padding-bottom: 16px; margin-bottom: 8px; border-bottom: 2px solid var(--pt-primary); }
.pt-news-date-list .date-box { width: 56px; text-align: center; background: var(--pt-primary); color: #fff; border-radius: 4px; padding: 8px 4px; font-size: 14px; line-height: 1.2; }
.pt-news-date-list .date-box span { display: block; font-size: 22px; font-weight: bold; }
.pt-news-date-list .date { color: var(--pt-muted); font-size: 13px; white-space: nowrap; }

.pt-simple-list { list-style: none; margin: 0; padding: 0; }
.pt-simple-list li { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px dashed #e5e5e5; }
.pt-simple-list span { color: var(--pt-muted); font-size: 13px; white-space: nowrap; }

.pt-photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pt-photo-item { position: relative; display: block; border-radius: 8px; overflow: hidden; aspect-ratio: 4/3; }
.pt-photo-item img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .3s; }
.pt-photo-item span { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); padding: 8px 16px; background: rgba(0,0,0,.55); color: #fff; border-radius: 20px; opacity: 0; transition: opacity .3s; }
.pt-photo-item:hover img { transform: scale(1.05); }
.pt-photo-item:hover span { opacity: 1; }

.pt-feature-article { display: block; background: #fff; border-left: 4px solid var(--pt-primary); padding: 20px; border-radius: 0 8px 8px 0; box-shadow: 0 4px 16px rgba(0,0,0,.06); }
.pt-feature-article h3 { margin: 0 0 8px; font-size: 18px; }

.pt-footer { background: #2b2b2b; color: #ccc; padding: 40px 0 0; margin-top: 0; }
.pt-footer-inner { width: var(--pt-container); max-width: 100%; margin: 0 auto; padding: 0 15px 24px; display: flex; gap: 32px; flex-wrap: wrap; }
.pt-footer-links { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 12px 20px; }
.pt-footer-links a { color: #ddd; font-size: 14px; }
.pt-footer-info { flex: 1; min-width: 240px; font-size: 14px; line-height: 1.8; color: #aaa; }
.pt-copyright { text-align: center; padding: 16px; border-top: 1px solid #444; font-size: 13px; color: #888; }

.pt-inner-page { width: var(--pt-container); max-width: 100%; margin: 0 auto; padding: 120px 15px 48px; min-height: 400px; }
.pt-page-title { margin: 0 0 24px; font-size: 28px; color: var(--pt-primary); border-bottom: 3px solid var(--pt-accent); padding-bottom: 12px; }
.pt-article-list, .pt-photo-categories, .pt-video-list { list-style: none; margin: 0; padding: 0; }
.pt-article-list li { padding: 12px 0; border-bottom: 1px dashed #ddd; }
.pt-article-list .time { color: var(--pt-muted); margin-right: 12px; }
.pt-article-content { line-height: 1.8; font-size: 16px; }
.pt-article-content img { max-width: 100%; height: auto; }
.pt-no-data { color: var(--pt-muted); padding: 24px; text-align: center; background: #fafafa; border-radius: 6px; }

@media (max-width: 992px) {
  .pt-col-5, .pt-col-6, .pt-col-7 { width: 100%; }
  .pt-news-cards, .pt-photo-grid { grid-template-columns: 1fr; }
  .pt-header { position: relative; background: var(--pt-primary-dark); }
  .pt-hero-content { padding-top: 0; }
  .pt-inner-page { padding-top: 24px; }
}