/* ============ 基础：浅色版式 + 顶部科技蓝 ============ */
:root{
  --primary:#0d8bf2;        /* 科技蓝（顶部导航） */
  --primary-dark:#0a6fc2;
  --primary-light:#4dabf7;
  --accent:#e8480c;         /* 焦点强调色（凤凰红橙） */
  --link:#1763c4;
  --link-hover:#0d8bf2;
  --text:#1a2230;           /* 深色正文 */
  --text-muted:#6b7785;
  --line:#e6e9ef;           /* 浅灰描边 */
  --bg:#ffffff;             /* 白色背景 */
  --bg-card:#ffffff;        /* 白卡片 */
  --bg-card-hover:#f6f9fe;
  --bg-shade:#f7f9fc;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
  color:var(--text);background:var(--bg);font-size:14px;line-height:1.7;
}
a{color:var(--link);text-decoration:none;}
a:hover{color:var(--link-hover);}
.container{width:var(--maxw);max-width:96%;margin:0 auto;}
img{max-width:100%;}

/* ============ 顶部条（深蓝） ============ */
.topbar{background:#0a1628;color:#cfe3f8;font-size:12px;}
.topbar-inner{display:flex;justify-content:space-between;height:34px;align-items:center;}
.topbar-right a{color:#cfe3f8;margin-left:14px;}
.topbar-right a:hover{color:#fff;}

/* ============ 站点头（凤凰网式：白底 + 大logo + 站名/slogan） ============ */
.site-header{background:#ffffff;border-bottom:3px solid var(--primary);}
.site-header-inner{display:flex;align-items:center;justify-content:space-between;padding:18px 0;gap:20px;}

/* Logo 品牌区 */
.logo-brand{display:flex;align-items:center;gap:14px;text-decoration:none;}
.logo-icon{height:72px;width:auto;display:block;}
.brand-text{display:flex;flex-direction:column;justify-content:center;}
.brand-name{font-size:38px;font-weight:800;color:#111;line-height:1.1;letter-spacing:1px;}
.brand-slogan{font-size:13px;color:#888;line-height:1.4;margin-top:6px;letter-spacing:.5px;}

/* 头部右侧 */
.header-right{display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.header-mini-links{font-size:12px;color:#999;}
.header-mini-links a{color:#666;margin-left:14px;}
.header-mini-links a:hover{color:var(--primary);}
.search-box{display:flex;border:2px solid var(--primary);border-radius:2px;overflow:hidden;height:38px;background:#fff;}
.search-box input{border:none;outline:none;padding:0 14px;width:260px;font-size:14px;background:#fff;color:var(--text);}
.search-box input::placeholder{color:#9aa6b2;}
.search-box button{background:var(--primary);color:#fff;border:none;padding:0 22px;cursor:pointer;font-size:14px;font-weight:600;}
.search-box button:hover{background:var(--primary-dark);}

/* ============ 导航栏（科技蓝） ============ */
.navbar{background:var(--primary);box-shadow:0 2px 8px rgba(13,139,242,.25);}
.navbar-inner{display:flex;flex-wrap:wrap;}
.nav-link{display:block;color:#fff;padding:0 22px;height:44px;line-height:44px;font-size:16px;font-weight:600;position:relative;}
.nav-link:hover{background:rgba(255,255,255,.14);color:#fff;}
.nav-link.active{color:#fff;background:rgba(0,0,0,.14);}
.nav-link.active::after{content:"";position:absolute;bottom:0;left:15%;right:15%;height:3px;background:#fff;border-radius:2px;}

/* ============ 主区 ============ */
.main{padding:0 0 30px;background:var(--bg);min-height:60vh;}
.site-footer{background:#f4f6f9;color:var(--text-muted);padding:24px 0;font-size:12px;text-align:center;margin-top:30px;border-top:1px solid var(--line);}
.site-footer a{color:var(--text-muted);}
.site-footer a:hover{color:var(--primary);}
.footer-links a{margin:0 8px;}

/* ============ 顶部 Banner（通栏，凤凰比例：窄横幅） ============ */
.top-banner{background:#eef3fb;width:100%;line-height:0;overflow:hidden;}
.top-banner a{display:block;width:100%;line-height:0;}
.top-banner img{display:block;width:100%;height:auto;max-height:120px;object-fit:cover;object-position:center;border:none;}
.top-banner-default{background:linear-gradient(90deg,#0a2540,#0d3560,#0a2540);color:#cfe3f8;text-align:center;}
.top-banner-default span{display:block;height:120px;line-height:120px;font-size:16px;letter-spacing:2px;}

/* ============ 焦点区：轮播 + 右侧要闻/热点 ============ */
.featured{display:flex;gap:20px;padding:22px 0 18px;border-bottom:1px solid var(--line);}
.featured-main{flex:1.65;min-width:0;}
.featured-side{flex:1;min-width:0;display:flex;flex-direction:column;}

/* 轮播 */
.focus-carousel{position:relative;border-radius:4px;overflow:hidden;background:#000;box-shadow:0 4px 18px rgba(20,40,80,.22);border:1px solid var(--line);}
.carousel-track{position:relative;height:380px;}
.carousel-item{position:absolute;inset:0;opacity:0;transition:opacity .5s ease;z-index:1;}
.carousel-item.active{opacity:1;z-index:2;}
.carousel-item a{display:block;height:100%;position:relative;}
.carousel-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.carousel-item:hover img{transform:scale(1.03);}
.carousel-caption{position:absolute;left:0;right:0;bottom:0;padding:18px 22px;background:linear-gradient(transparent,rgba(8,16,30,.9));}
.carousel-caption .caption-tag{display:inline-block;background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:2px 8px;border-radius:2px;margin-bottom:8px;}
.carousel-caption h2{color:#fff;font-size:24px;font-weight:700;line-height:1.4;text-shadow:0 1px 4px rgba(0,0,0,.7);}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);z-index:10;width:42px;height:70px;background:rgba(8,16,30,.4);color:#fff;border:none;font-size:34px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;}
.carousel-btn:hover{background:rgba(13,139,242,.8);}
.carousel-prev{left:0;border-radius:0 4px 4px 0;}
.carousel-next{right:0;border-radius:4px 0 0 4px;}
.carousel-dots{position:absolute;bottom:12px;right:18px;z-index:10;display:flex;gap:8px;}
.carousel-dots span{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;}
.carousel-dots span.active{background:#fff;}

/* 右侧上方：热点文字链 */
.side-top-links{margin-bottom:14px;background:var(--bg-card);border:1px solid var(--line);border-radius:4px;}
.hot-links{list-style:none;padding:6px 14px 10px;}
.hot-links li{border-bottom:1px dashed var(--line);}
.hot-links li:last-child{border-bottom:none;}
.hot-links li a{display:flex;gap:10px;align-items:flex-start;padding:10px 0;color:#222;font-size:15px;line-height:1.5;}
.hot-links li a:hover{color:var(--primary);}
.hot-links .num{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;background:#e8eef6;color:var(--text-muted);font-size:12px;border-radius:2px;flex-shrink:0;margin-top:2px;font-weight:700;}
.hot-links li:nth-child(-n+3) .num{background:var(--accent);color:#fff;}
.hot-links .txt{flex:1;}

/* 要闻侧栏 */
.side-tabs{display:flex;border-bottom:2px solid var(--primary);margin-bottom:12px;}
.side-tabs .tab{padding:8px 18px;font-size:16px;font-weight:700;color:var(--text-muted);cursor:pointer;}
.side-tabs .tab.active{color:#fff;background:var(--primary);border:2px solid var(--primary);border-bottom:none;margin-bottom:-2px;border-radius:4px 4px 0 0;}
.headline-list{list-style:none;background:var(--bg-card);padding:10px 14px;border:1px solid var(--line);border-radius:0 0 4px 4px;flex:1;}
.headline-list li{border-bottom:1px dashed var(--line);}
.headline-list li:last-child{border-bottom:none;}
.headline-list li a{display:flex;gap:10px;align-items:flex-start;padding:10px 0;color:#222;font-size:15px;line-height:1.45;}
.headline-list li a:hover{color:var(--primary);}
.headline-list .num{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;background:#e8eef6;color:var(--text-muted);font-size:12px;border-radius:2px;flex-shrink:0;margin-top:2px;}
.headline-list li.top .num{background:var(--accent);color:#fff;}
.headline-list .txt{flex:1;}

/* ============ 焦点图下方：科技热榜信息流 ============ */
.tech-hot-section{margin-top:18px;background:var(--bg-card);border:1px solid var(--line);border-radius:4px;padding:14px 16px 16px;box-shadow:0 1px 4px rgba(0,0,0,.03);}
.tech-hot-head{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid var(--accent);margin-bottom:14px;padding-bottom:8px;}
.tech-hot-head h3{font-size:18px;color:var(--text);font-weight:800;}
.tech-hot-head .more{font-size:12px;color:var(--text-muted);}
.tech-hot-head .more:hover{color:var(--primary);}
.tech-hot-list{list-style:none;}
.tech-hot-item{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line);}
.tech-hot-item:last-child{border-bottom:none;padding-bottom:0;}
.tech-hot-img{width:120px;height:80px;flex-shrink:0;overflow:hidden;border-radius:3px;border:1px solid var(--line);}
.tech-hot-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.tech-hot-item:hover .tech-hot-img img{transform:scale(1.05);}
.tech-hot-info{flex:1;min-width:0;display:flex;flex-direction:column;}
.tech-hot-topic{display:block;font-size:16px;font-weight:700;color:var(--text);line-height:1.45;margin-bottom:6px;}
.tech-hot-topic:hover{color:var(--accent);}
.tech-hot-topic::before{content:"#";color:var(--accent);margin-right:4px;font-weight:800;}
.tech-hot-summary{color:var(--text-muted);font-size:13px;line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:auto;}
.tech-hot-meta{display:flex;gap:12px;color:#9aa6b2;font-size:12px;margin-top:6px;}

/* ============ 科技热榜 ============ */
.hot-rank-section{padding:18px 16px;border:1px solid var(--line);border-radius:4px;margin-bottom:24px;background:var(--bg-card);box-shadow:0 1px 4px rgba(0,0,0,.03);}
.section-head{border-left:4px solid var(--accent);padding-left:12px;margin-bottom:14px;}
.section-head h3{font-size:20px;color:var(--text);}
.section-head .rank-icon{color:var(--accent);margin-right:4px;}
.hot-rank{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:10px 36px;counter-reset:rank;}
.hot-rank li{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px dashed var(--line);}
.hot-rank li::before{content:counter(rank);counter-increment:rank;display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;background:#e8eef6;color:var(--text-muted);font-size:12px;border-radius:2px;margin-right:10px;flex-shrink:0;font-weight:700;}
.hot-rank li:nth-child(-n+3)::before{background:var(--accent);color:#fff;}
.hot-rank a{flex:1;color:#222;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.hot-rank a:hover{color:var(--primary);}
.hot-meta{color:var(--text-muted);font-size:12px;white-space:nowrap;margin-left:10px;}

/* ============ 最新 Tab 列表 ============ */
.latest-section{background:var(--bg-card);border:1px solid var(--line);border-radius:4px;padding:0 18px 16px;margin-bottom:24px;box-shadow:0 1px 4px rgba(0,0,0,.03);}
.latest-tabs{display:flex;border-bottom:2px solid var(--primary);margin:0 -18px 16px;padding:0 18px;}
.latest-tabs a{display:block;padding:12px 22px;font-size:16px;font-weight:700;color:var(--text-muted);position:relative;}
.latest-tabs a:hover{color:var(--primary);}
.latest-tabs a.active{color:#fff;background:var(--primary);border-radius:4px 4px 0 0;}
.latest-list{list-style:none;}
.latest-list li{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed var(--line);}
.latest-list li:last-child{border-bottom:none;}
.latest-img{width:180px;height:120px;flex-shrink:0;overflow:hidden;border-radius:3px;border:1px solid var(--line);}
.latest-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.latest-list li:hover .latest-img img{transform:scale(1.04);}
.latest-info{flex:1;min-width:0;display:flex;flex-direction:column;}
.latest-title{display:block;font-size:17px;font-weight:700;color:var(--text);line-height:1.45;margin-bottom:8px;}
.latest-title:hover{color:var(--primary);}
.latest-summary{color:var(--text-muted);font-size:13px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:auto;}
.latest-meta{display:flex;gap:14px;color:#9aa6b2;font-size:12px;margin-top:8px;}
.latest-channel{color:var(--primary);font-weight:600;}

/* ============ 频道矩阵（两栏） ============ */
.channel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px 28px;}
.channel-block{margin-bottom:0;background:var(--bg-card);border:1px solid var(--line);border-radius:4px;padding:14px 16px;transition:box-shadow .2s;box-shadow:0 1px 4px rgba(0,0,0,.03);}
.channel-block:hover{box-shadow:0 4px 16px rgba(13,139,242,.12);}
.block-head{display:flex;justify-content:space-between;align-items:flex-end;border-bottom:1px solid var(--primary);margin-bottom:12px;padding-bottom:8px;}
.block-head h3{font-size:18px;}
.block-head h3 a{color:var(--text);}
.block-head h3 a:hover{color:var(--primary);}
.more{font-size:12px;color:var(--text-muted);}
.more:hover{color:var(--primary);}
.block-body{background:transparent;}
.block-top{display:flex;gap:14px;margin-bottom:12px;}
.block-top-img{width:140px;height:90px;flex-shrink:0;overflow:hidden;border-radius:3px;border:1px solid var(--line);}
.block-top-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.block-top-img:hover img{transform:scale(1.05);}
.block-top-info{flex:1;min-width:0;}
.block-top-title{display:block;font-size:16px;font-weight:700;color:var(--text);line-height:1.4;margin-bottom:6px;}
.block-top-title:hover{color:var(--primary);}
.block-top-summary{color:var(--text-muted);font-size:13px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============ 封面占位色块（无图时使用，按频道配色） ============ */
.cover-ph{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:32px;font-weight:800;letter-spacing:2px;
  background:linear-gradient(135deg,#3a7bd5,#0d8bf2);
}
.cover-ph span{text-shadow:0 2px 6px rgba(0,0,0,.3);opacity:.92;}
.ch-keji{background:linear-gradient(135deg,#0d8bf2,#1763c4);}
.ch-caijing{background:linear-gradient(135deg,#e8770c,#c4161c);}
.ch-shehui{background:linear-gradient(135deg,#2fa98c,#1c7d63);}
.ch-guoji{background:linear-gradient(135deg,#7b5cf0,#4a2fb8);}
.ch-junshi{background:linear-gradient(135deg,#4a5a6a,#27313d);}
.ch-tiyu{background:linear-gradient(135deg,#16a34a,#0e7a36);}
.ch-yule{background:linear-gradient(135deg,#e84d8a,#b3164f);}
.ch-qiche{background:linear-gradient(135deg,#0ea5b7,#0a7a87);}
.ch-wenhua{background:linear-gradient(135deg,#d4a017,#a87c0c);}

/* ============ 新闻列表 ============ */
.news-list{list-style:none;}
.news-list li{padding:8px 0;border-bottom:1px dashed var(--line);display:flex;justify-content:space-between;gap:14px;align-items:baseline;}
.news-title{color:#222;font-size:14px;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.news-title:hover{color:var(--primary);}
.news-meta{color:var(--text-muted);font-size:12px;white-space:nowrap;}
.news-sub{color:var(--text-muted);font-size:13px;margin:4px 0;width:100%;}
.list-lg li{flex-wrap:wrap;padding:12px 0;}
.list-lg .news-title{white-space:normal;font-size:17px;}

/* ============ 面包屑 / 频道页 ============ */
.crumb{font-size:13px;color:var(--text-muted);padding:10px 0;margin-bottom:8px;}
.crumb a{color:var(--link);}
.crumb .desc{margin-left:10px;color:#9aa6b2;font-style:normal;}
.channel-layout{display:flex;gap:28px;}
.channel-main{flex:1;min-width:0;}
.channel-side{width:300px;flex-shrink:0;}
.pager{margin:18px 0;text-align:center;font-size:13px;color:var(--text-muted);}
.pager a{display:inline-block;padding:5px 12px;border:1px solid var(--line);margin:0 4px;color:var(--link);}
.pager a:hover{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ============ 文章页 ============ */
.article-side{width:320px;flex-shrink:0;}
.article{max-width:760px;}
.article-title{font-size:30px;line-height:1.35;color:var(--text);margin:8px 0 14px;font-weight:800;}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;color:var(--text-muted);font-size:13px;padding:10px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:16px;}
.article-meta a{color:var(--text-muted);}
.badge{display:inline-block;padding:1px 8px;border-radius:3px;font-size:12px;color:#fff;}
.badge.original{background:#1a8a3c;}
.badge.reprint{background:#d98a00;}
.article-cover{width:100%;margin:6px 0 16px;border-radius:3px;}
.article-content{font-size:16px;line-height:1.9;color:#2a3340;}
.article-content img{max-width:100%;height:auto;margin:10px 0;}
.article-content p{margin:12px 0;}
.reprint-note{margin-top:24px;padding:12px;background:#f1f6fd;border-left:3px solid var(--primary);font-size:13px;color:var(--text-muted);}

/* ============ 空 / 错误 ============ */
.empty{color:var(--text-muted);padding:30px 0;text-align:center;}
.empty-page{text-align:center;padding:60px 0;}
.empty-page h1{font-size:64px;color:var(--primary);}
.btn{display:inline-block;background:var(--primary);color:#fff;padding:8px 22px;border-radius:3px;margin-top:10px;}
.btn:hover{background:var(--primary-dark);color:#fff;}

/* ============ 后台 ============ */
.admin-wrap{max-width:1100px;margin:0 auto;padding:20px;}
.admin-login{max-width:380px;margin:80px auto;background:var(--bg-card);padding:30px;border:1px solid var(--line);border-radius:4px;}
.admin-login h2{margin-bottom:18px;color:var(--primary);}
.admin-bar{background:#0a1628;color:#fff;padding:12px 0;margin-bottom:18px;}
.admin-bar .container{display:flex;justify-content:space-between;align-items:center;}
.admin-bar a{color:#cfe3f8;margin-left:14px;}
.admin-bar a:hover{color:#fff;}
.admin-title{font-size:20px;margin-bottom:16px;color:var(--text);}
.form-group{margin-bottom:14px;}
.form-group label{display:block;margin-bottom:5px;font-weight:600;color:var(--text);}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:8px 10px;border:1px solid #cdd6e2;border-radius:3px;font-size:14px;font-family:inherit;background:#fff;color:var(--text);
}
.form-group textarea{min-height:300px;line-height:1.7;}
.btn-primary{background:var(--primary);color:#fff;border:none;padding:9px 22px;border-radius:3px;cursor:pointer;font-size:15px;}
.btn-primary:hover{background:var(--primary-dark);}
.btn-sm{padding:4px 10px;font-size:12px;border-radius:3px;border:none;cursor:pointer;}
.btn-edit{background:#1a8a3c;color:#fff;}
.btn-del{background:#c4161c;color:#fff;}
.btn-run{background:#1763c4;color:#fff;}
table.admin-table{width:100%;border-collapse:collapse;background:var(--bg-card);font-size:13px;}
table.admin-table th,table.admin-table td{border:1px solid var(--line);padding:8px 10px;text-align:left;color:var(--text);}
table.admin-table th{background:#eef3fb;font-weight:700;}
table.admin-table tr:nth-child(even){background:#f7f9fc;}
.stat-cards{display:flex;gap:16px;margin-bottom:22px;flex-wrap:wrap;}
.stat-card{flex:1;min-width:160px;background:var(--bg-card);border:1px solid var(--line);padding:18px;text-align:center;}
.stat-card .num{font-size:28px;font-weight:800;color:var(--primary);}
.stat-card .lbl{color:var(--text-muted);font-size:13px;margin-top:4px;}
.alert{padding:10px 14px;border-radius:3px;margin-bottom:14px;font-size:14px;}
.alert-success{background:#e6f7ec;color:#1a8a3c;border:1px solid #aee3c0;}
.alert-danger{background:#fdeaea;color:#c4161c;border:1px solid #f3bcbc;}
.log-status{font-size:12px;padding:2px 8px;border-radius:3px;color:#fff;}
.log-ok{background:#1a8a3c;}
.log-failed,.log-error{background:#c4161c;}
.log-empty{background:#888;}

/* ============ 响应式 ============ */
@media (max-width:900px){
  .featured{flex-direction:column;}
  .featured-main,.featured-side{width:100%;}
  .carousel-track{height:240px;}
  .carousel-caption h2{font-size:17px;}
  .side-top-news{flex-direction:row;}
  .top-news-img{height:100px;}
  .channel-grid{grid-template-columns:1fr;}
  .hot-rank{grid-template-columns:1fr;}
  .latest-list li{flex-direction:column;}
  .latest-img{width:100%;height:180px;}
  .latest-tabs a{padding:10px 14px;font-size:14px;}
  .block-top{flex-direction:column;}
  .block-top-img{width:100%;height:180px;}
  .channel-layout,.article{flex-direction:column;display:block;}
  .channel-side,.article-side{width:100%;margin-top:20px;}
  .site-header-inner{flex-wrap:wrap;padding:14px 0;}
  .logo-icon{height:54px;}
  .brand-name{font-size:28px;}
  .brand-slogan{font-size:12px;}
  .header-right{width:100%;align-items:flex-start;margin-top:8px;}
  .search-box input{width:160px;}
  .top-banner img{max-height:90px;}
}