/* ========== 深色 Hero ========== */
.about-hero-dark{position:relative;overflow:hidden;padding:100px 0 80px;background:linear-gradient(135deg,#0f172a 0%,#1e3a5f 50%,#0f172a 100%);color:#fff}
.about-hero-dark::before{content:'';position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(90deg,rgba(255,255,255,.015) 0px,rgba(255,255,255,.015) 1px,transparent 1px,transparent 60px),repeating-linear-gradient(0deg,rgba(255,255,255,.01) 0px,rgba(255,255,255,.01) 1px,transparent 1px,transparent 60px)}
.about-hero-bg-decor{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.ahd-ring{position:absolute;border-radius:50%;border:1.5px solid rgba(108,196,255,.12)}
.ahd-ring-1{width:500px;height:500px;top:-100px;right:-100px;animation:ahdSpin 25s linear infinite}
.ahd-ring-2{width:350px;height:350px;bottom:-80px;left:-60px;animation:ahdSpin 18s linear infinite reverse;border-color:rgba(47,125,246,.15)}
.ahd-ring-3{width:200px;height:200px;top:50%;left:50%;transform:translate(-50%,-50%);animation:ahdSpin3 12s linear infinite;border-color:rgba(108,196,255,.18)}
@keyframes ahdSpin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes ahdSpin3{from{transform:translate(-50%,-50%) rotate(0deg)}to{transform:translate(-50%,-50%) rotate(360deg)}}
.about-hero-dark-inner{position:relative;z-index:1;text-align:center}
.about-hero-dark-en{display:inline-block;font-size:.78rem;letter-spacing:.35em;color:#6cc4ff;font-weight:700;margin-bottom:16px;padding:5px 16px;border:1px solid rgba(108,196,255,.3);border-radius:999px}
.about-hero-dark h1{font-size:clamp(2rem,4vw,3rem);margin:0 0 16px;color:#fff;font-weight:800}
.about-hero-dark-sub{color:rgba(255,255,255,.75);font-size:1.05rem;margin:0 0 20px;max-width:600px;margin-left:auto;margin-right:auto}
.about-hero-dark-line{width:48px;height:3px;margin:0 auto 40px;border-radius:2px;background:linear-gradient(90deg,#2f7df6,#6cc4ff)}

/* ========== 新闻详情 ========== */
.news-detail-section{background:#f8fafc}
.news-detail-layout{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start}

/* 文章主体 */
.news-article{background:#fff;border-radius:16px;overflow:hidden;border:1px solid #eee}
.news-article-header{padding:36px 36px 0}
.news-article-meta{display:flex;align-items:center;gap:16px;margin-bottom:16px;flex-wrap:wrap}
.news-article-category{font-size:.78rem;font-weight:700;color:#fff;background:linear-gradient(135deg,#2f7df6,#6cc4ff);padding:4px 14px;border-radius:999px}
.news-article-date{font-size:.85rem;color:#6b7280}
.news-article-views{display:flex;align-items:center;gap:4px;font-size:.85rem;color:#6b7280}
.news-article-views svg{color:#9ca3af}
.news-article-title{font-size:1.8rem;font-weight:800;color:#0f172a;margin:0 0 16px;line-height:1.4}
.news-article-summary{font-size:1rem;color:#6b7280;line-height:1.8;margin:0 0 28px;padding-bottom:28px;border-bottom:1px solid #eee}
.news-article-cover{margin:0 36px;border-radius:12px;overflow:hidden}
.news-article-cover img{width:100%;height:400px;object-fit:cover;display:block}
.news-article-content{padding:32px 36px}
.news-article-content h2{font-size:1.3rem;font-weight:700;color:#0f172a;margin:28px 0 14px;padding-left:14px;border-left:3px solid #2f7df6}
.news-article-content h2:first-child{margin-top:0}
.news-article-content p{font-size:.95rem;color:#374151;line-height:2;margin:0 0 16px}
.news-article-content blockquote{margin:24px 0;padding:20px 24px;background:#f0f5ff;border-radius:12px;border-left:4px solid #2f7df6;font-style:italic}
.news-article-content blockquote p{color:#1f2937;margin:0 0 8px;font-size:1rem}
.news-article-content blockquote cite{display:block;font-size:.85rem;color:#6b7280;font-style:normal;text-align:right}
.news-article-footer{padding:24px 36px;border-top:1px solid #eee;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.news-article-tags{display:flex;gap:8px;flex-wrap:wrap}
.news-article-tags span{font-size:.8rem;color:#2f7df6;background:rgba(47,125,246,.08);padding:4px 12px;border-radius:999px;font-weight:600}
.news-article-share{display:flex;align-items:center;gap:8px}
.news-article-share>span{font-size:.85rem;color:#6b7280}
.share-btn{width:32px;height:32px;border-radius:8px;background:#f3f6fb;display:grid;place-items:center;color:#6b7280;transition:all .25s}
.share-btn:hover{background:#2f7df6;color:#fff;transform:translateY(-2px)}

/* 上下篇导航 */
.news-article-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.news-nav-prev,.news-nav-next{display:flex;align-items:center;gap:12px;padding:20px 24px;background:#fff;border-radius:12px;border:1px solid #eee;text-decoration:none;transition:all .3s}
.news-nav-prev:hover,.news-nav-next:hover{border-color:#2f7df6;box-shadow:0 4px 16px rgba(47,125,246,.1);transform:translateY(-2px)}
.news-nav-prev svg,.news-nav-next svg{color:#2f7df6;flex-shrink:0}
.news-nav-prev>div,.news-nav-next>div{display:flex;flex-direction:column;gap:4px;min-width:0}
.nav-label{font-size:.75rem;color:#9ca3af;font-weight:600}
.nav-title{font-size:.9rem;color:#1f2937;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-nav-prev:hover .nav-title,.news-nav-next:hover .nav-title{color:#2f7df6}

/* 侧边栏 */
.news-detail-sidebar{display:flex;flex-direction:column;gap:20px}
.sidebar-card{background:#fff;border-radius:14px;padding:24px;border:1px solid #eee}
.sidebar-card h3{font-size:1.05rem;font-weight:700;color:#0f172a;margin:0 0 18px;padding-bottom:12px;border-bottom:2px solid #f3f6fb;position:relative}
.sidebar-card h3::after{content:'';position:absolute;bottom:-2px;left:0;width:32px;height:2px;background:linear-gradient(90deg,#2f7df6,#6cc4ff);border-radius:1px}
.sidebar-categories ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.sidebar-categories li a{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-radius:8px;color:#374151;font-size:.9rem;font-weight:500;transition:all .25s;text-decoration:none}
.sidebar-categories li a:hover{background:rgba(47,125,246,.06);color:#2f7df6}
.sidebar-categories li.active a{background:rgba(47,125,246,.08);color:#2f7df6;font-weight:700}
.sidebar-categories li a span{font-size:.78rem;color:#9ca3af;background:#f3f6fb;padding:2px 8px;border-radius:999px}
.sidebar-hot ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.sidebar-hot li{display:flex;align-items:flex-start;gap:10px}
.hot-rank{width:22px;height:22px;border-radius:6px;background:#f3f6fb;display:grid;place-items:center;font-size:.72rem;font-weight:800;color:#9ca3af;flex-shrink:0}
.sidebar-hot li:nth-child(1) .hot-rank{background:linear-gradient(135deg,#ef4444,#f97316);color:#fff}
.sidebar-hot li:nth-child(2) .hot-rank{background:linear-gradient(135deg,#f97316,#f59e0b);color:#fff}
.sidebar-hot li:nth-child(3) .hot-rank{background:linear-gradient(135deg,#f59e0b,#eab308);color:#fff}
.sidebar-hot li a{font-size:.88rem;color:#374151;line-height:1.5;text-decoration:none;transition:color .25s;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sidebar-hot li a:hover{color:#2f7df6}
.sidebar-tags .tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.sidebar-tags .tag-cloud a{font-size:.8rem;color:#6b7280;background:#f3f6fb;padding:6px 14px;border-radius:999px;text-decoration:none;transition:all .25s;border:1px solid transparent}
.sidebar-tags .tag-cloud a:hover{color:#2f7df6;background:rgba(47,125,246,.06);border-color:rgba(47,125,246,.2)}
.sidebar-cta{text-align:center;background:linear-gradient(135deg,#f0f5ff,#e8f0fe);border-color:rgba(47,125,246,.15)}
.sidebar-cta-icon{width:52px;height:52px;border-radius:50%;margin:0 auto 14px;display:grid;place-items:center;background:linear-gradient(135deg,#2f7df6,#6cc4ff);color:#fff}
.sidebar-cta strong{display:block;font-size:1rem;color:#0f172a;margin-bottom:6px}
.sidebar-cta p{font-size:.85rem;color:#6b7280;margin:0 0 16px}
.sidebar-cta-btn{display:inline-block;padding:10px 28px;background:linear-gradient(135deg,#2f7df6,#1a5fd4);color:#fff;font-size:.88rem;font-weight:700;border-radius:999px;text-decoration:none;transition:all .3s;box-shadow:0 4px 12px rgba(47,125,246,.3)}
.sidebar-cta-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(47,125,246,.4)}

/* 相关新闻 */
.news-related-section{background:#fff}
.news-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-related-card{border-radius:14px;overflow:hidden;background:#fff;border:1px solid #eee;text-decoration:none;transition:all .35s}
.news-related-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(0,0,0,.1)}
.news-related-img{position:relative;overflow:hidden;height:200px}
.news-related-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.news-related-card:hover .news-related-img img{transform:scale(1.08)}
.news-related-cat{position:absolute;top:12px;left:12px;font-size:.72rem;font-weight:700;color:#fff;background:linear-gradient(135deg,#2f7df6,#6cc4ff);padding:3px 12px;border-radius:999px}
.news-related-body{padding:20px}
.news-related-body h4{font-size:1rem;font-weight:700;color:#0f172a;margin:0 0 8px;line-height:1.5;transition:color .3s}
.news-related-card:hover .news-related-body h4{color:#2f7df6}
.news-related-body p{font-size:.85rem;color:#6b7280;line-height:1.7;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-related-date{font-size:.78rem;color:#9ca3af}

/* 滚动入场 */
.scroll-reveal{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.scroll-reveal.visible{opacity:1;transform:translateY(0)}

@media(max-width:1024px){
    .news-detail-layout{grid-template-columns:1fr}
    .news-detail-sidebar{flex-direction:row;flex-wrap:wrap}
    .sidebar-card{flex:1;min-width:280px}
    .news-related-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
    .news-article-header,.news-article-content,.news-article-footer{padding-left:20px;padding-right:20px}
    .news-article-cover{margin:0 20px}
    .news-article-cover img{height:240px}
    .news-article-title{font-size:1.4rem}
    .news-article-nav{grid-template-columns:1fr}
    .news-related-grid{grid-template-columns:1fr}
    .about-hero-dark{padding:70px 0 50px}
    .about-hero-dark h1{font-size:1.8rem}
}