:root{--bg:#f4f6fb;--card:#fff;--text:#2b2f3a;--sub:#8a90a2;--main:#5b6cff;--radius:14px;--shadow:0 2px 14px rgba(30,40,90,.07)}
@media(prefers-color-scheme:dark){:root{--bg:#14161c;--card:#1d2028;--text:#e6e8ee;--sub:#8b91a3;--shadow:0 2px 14px rgba(0,0,0,.35)}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}a:hover{color:var(--main)}
.qiao-in{max-width:1120px;margin:0 auto;padding:0 16px}
.qiao-header{position:sticky;top:0;z-index:9;background:var(--card);box-shadow:var(--shadow)}
.qiao-header .qiao-in{display:flex;align-items:center;gap:20px;height:60px}
.qiao-logo{font-size:20px;font-weight:700;color:var(--main)}
.qiao-nav{display:flex;gap:18px;flex:1;overflow-x:auto;white-space:nowrap}
.qiao-search{display:flex;gap:6px}
.qiao-search input{width:140px;padding:6px 12px;border:1px solid rgba(128,128,128,.25);border-radius:20px;background:transparent;color:var(--text)}
.qiao-search button{padding:6px 14px;border:0;border-radius:20px;background:var(--main);color:#fff;cursor:pointer}
.qiao-layout{display:flex;gap:20px;margin-top:20px;align-items:flex-start}
.qiao-main{flex:1;min-width:0}.qiao-side{width:300px;flex:none}
.qiao-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:16px}
.qiao-tip{color:var(--sub);font-size:13px}
.qiao-archive-title{margin:0 0 16px}
.qiao-item{display:flex;gap:16px;padding:14px}
.qiao-thumb{flex:none;width:200px;height:132px;border-radius:10px;overflow:hidden}
.qiao-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}.qiao-thumb:hover img{transform:scale(1.05)}
.qiao-body{flex:1;min-width:0}.qiao-body h2{margin:0 0 6px;font-size:18px}.qiao-body p{margin:0 0 8px;color:var(--sub)}
.qiao-meta{font-size:13px;color:var(--sub)}
.qiao-post h1{margin:0 0 8px}
.qiao-content{margin:16px 0;overflow-wrap:anywhere}.qiao-content img{max-width:100%;height:auto;border-radius:8px}
.qiao-content pre{overflow:auto;padding:12px;border-radius:8px;background:rgba(128,128,128,.12)}
.qiao-side h3{margin:0 0 10px;font-size:16px;border-left:4px solid var(--main);padding-left:8px}
.qiao-side ul{margin:0;padding:0;list-style:none}.qiao-side li{padding:5px 0}
.page-navigator{display:flex;gap:8px;justify-content:center;list-style:none;padding:0;margin:20px 0}
.page-navigator a{display:block;padding:6px 14px;border-radius:8px;background:var(--card);box-shadow:var(--shadow)}
.page-navigator .current a{background:var(--main);color:#fff}
.qiao-footer{margin:30px 0;text-align:center;color:var(--sub);font-size:13px}
@media(max-width:800px){.qiao-layout{flex-direction:column}.qiao-side{width:100%}.qiao-thumb{width:110px;height:84px}.qiao-body p{display:none}.qiao-search input{width:90px}}

/* 文章目录 / 上下篇 / 评论 */
.qiao-toc{margin:14px 0;padding:12px 16px;border-radius:10px;background:rgba(128,128,128,.1);font-size:14px}
.qiao-toc ul{margin:6px 0 0;padding-left:0;list-style:none}.qiao-toc li{padding:2px 0}.qiao-toc li.h3{padding-left:16px}
.qiao-prevnext{display:flex;justify-content:space-between;gap:16px;font-size:14px}
#comments h3{margin:0 0 12px;font-size:16px}
.comment-list,.comment-list ol{list-style:none;margin:0;padding:0}
.comment-body{padding:12px 0;border-bottom:1px solid rgba(128,128,128,.15)}
.comment-child{margin-left:28px;border-bottom:0}
.comment-author{display:flex;align-items:center;gap:10px}.comment-author img{border-radius:50%}.comment-author cite{font-style:normal;font-weight:600}
.comment-meta{font-size:12px;color:var(--sub);margin:2px 0 6px 50px}
.comment-content{margin-left:50px;overflow-wrap:anywhere}
.qiao-form textarea,.qiao-form input{width:100%;padding:8px 12px;margin-bottom:10px;border:1px solid rgba(128,128,128,.25);border-radius:10px;background:transparent;color:var(--text);font:inherit}
.qiao-form-row{display:flex;gap:10px}.qiao-form-row input{flex:1;min-width:0}
.qiao-form button{padding:8px 22px;border:0;border-radius:20px;background:var(--main);color:#fff;cursor:pointer}
@media(max-width:800px){.qiao-form-row{flex-direction:column;gap:0}.qiao-prevnext{flex-direction:column}}

/* ===== 导航下拉 ===== */
.qiao-nav{position:relative}
.qiao-nav-item{position:relative}
.qiao-dropdown{display:none;position:absolute;top:100%;left:0;min-width:160px;background:var(--card);border-radius:10px;box-shadow:var(--shadow);padding:8px;z-index:20}
.qiao-nav-item:hover .qiao-dropdown{display:block}
.qiao-dropdown a{display:block;padding:8px 12px;border-radius:6px}
.qiao-dropdown a:hover{background:rgba(91,108,255,.1)}
.qiao-auth{display:flex;align-items:center;gap:8px;flex:none}
.qiao-auth a{padding:6px 16px;border-radius:20px;font-size:14px}
.qiao-auth .qiao-login{border:1px solid rgba(128,128,128,.3)}
.qiao-auth .qiao-register{background:var(--main);color:#fff}
.qiao-user{display:flex;align-items:center;gap:8px;position:relative}
.qiao-user img{width:32px;height:32px;border-radius:50%}
.qiao-user-menu{display:none;position:absolute;top:100%;right:0;min-width:140px;background:var(--card);border-radius:10px;box-shadow:var(--shadow);padding:8px;z-index:20}
.qiao-user:hover .qiao-user-menu{display:block}
.qiao-user-menu a{display:block;padding:8px 12px;border-radius:6px;font-size:14px}
.qiao-user-menu a:hover{background:rgba(91,108,255,.1)}

/* ===== 首页卡片网格 ===== */
.qiao-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.qiao-grid .qiao-card{margin-bottom:0;padding:0;overflow:hidden;display:flex;flex-direction:column}
.qiao-grid .qiao-g-thumb{width:100%;aspect-ratio:16/10;overflow:hidden}
.qiao-grid .qiao-g-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.qiao-grid .qiao-card:hover .qiao-g-thumb img{transform:scale(1.06)}
.qiao-grid .qiao-g-body{padding:14px 16px}
.qiao-grid .qiao-g-body h2{margin:0 0 6px;font-size:16px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.qiao-grid .qiao-g-body p{margin:0 0 8px;color:var(--sub);font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.qiao-cat-pill{display:inline-block;padding:2px 10px;border-radius:12px;background:rgba(91,108,255,.12);color:var(--main);font-size:12px;margin-bottom:8px}

/* ===== 侧栏公告 ===== */
.qiao-announce{background:linear-gradient(135deg,#eef2ff,#fdf2f8);border-left:3px solid var(--main)}
.qiao-announce h3{border:0;padding:0;margin:0 0 6px}
.qiao-tagcloud{display:flex;flex-wrap:wrap;gap:8px}
.qiao-tagcloud a{padding:4px 12px;border-radius:14px;background:rgba(128,128,128,.1);font-size:13px}
.qiao-tagcloud a:hover{background:var(--main);color:#fff}

/* ===== 页脚 ===== */
.qiao-footer{background:var(--card);box-shadow:var(--shadow);padding:24px 0;margin:30px 0 0}
.qiao-footer-in{max-width:1120px;margin:0 auto;padding:0 16px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;font-size:13px;color:var(--sub)}
.qiao-footer-links a{margin-right:14px}

/* ===== 404 ===== */
.qiao-404{text-align:center;padding:60px 20px}
.qiao-404 h1{font-size:64px;margin:0;color:var(--main)}
.qiao-404 p{color:var(--sub);margin:10px 0 20px}
.qiao-404 a{display:inline-block;padding:10px 28px;border-radius:20px;background:var(--main);color:#fff}

@media(max-width:800px){.qiao-dropdown,.qiao-user-menu{position:fixed;left:0;right:0;top:auto;border-radius:0}}

/* ===== 手动深色模式（优先级高于系统跟随） ===== */
:root[data-theme="dark"]{--bg:#14161c;--card:#1d2028;--text:#e6e8ee;--sub:#8b91a3;--shadow:0 2px 14px rgba(0,0,0,.35)}
:root[data-theme="light"]{--bg:#f4f6fb;--card:#fff;--text:#2b2f3a;--sub:#8a90a2;--shadow:0 2px 14px rgba(30,40,90,.07)}

/* ===== 顶栏新增元素 ===== */
.qiao-burger{display:none;background:0;border:0;font-size:22px;color:var(--text);cursor:pointer;flex:none}
.qiao-theme-toggle{background:0;border:0;font-size:18px;cursor:pointer;flex:none;padding:4px 8px;border-radius:8px}
.qiao-theme-toggle:hover{background:rgba(128,128,128,.12)}

/* ===== 抽屉菜单 ===== */
.qiao-drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:40}
.qiao-drawer-mask.qiao-open{display:block}
.qiao-drawer{position:fixed;top:0;left:-320px;width:300px;height:100%;background:var(--card);z-index:50;transition:left .25s;overflow-y:auto;padding-bottom:30px}
.qiao-drawer.qiao-open{left:0}
.qiao-drawer-head{display:flex;justify-content:space-between;align-items:center;padding:16px;font-weight:700;font-size:18px}
.qiao-drawer-head button{background:0;border:0;font-size:18px;cursor:pointer}
.qiao-drawer .qiao-search{padding:0 16px 10px}
.qiao-drawer .qiao-search input{width:100%}
.qiao-drawer-section{padding:10px 16px}
.qiao-drawer-title{font-size:13px;color:var(--sub);margin-bottom:8px}
.qiao-drawer-link{display:block;padding:10px 0;font-weight:600}
.qiao-drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.qiao-drawer-tile{display:flex;align-items:center;gap:8px;padding:10px;border-radius:10px;background:rgba(128,128,128,.08);font-size:14px}
.qiao-cat-icon{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;color:#fff;font-size:13px;flex:none}
.qiao-drawer-auth{display:flex;gap:10px;margin-top:10px}
.qiao-drawer-auth a{flex:1;text-align:center;padding:10px;border-radius:10px;background:var(--main);color:#fff}

/* ===== 首页横幅 ===== */
.qiao-hero{background:linear-gradient(135deg,#6366f1,#ec4899);background-size:cover;background-position:center;padding:60px 16px;text-align:center;color:#fff}
.qiao-hero-in{max-width:700px;margin:0 auto}
.qiao-hero h1{font-size:28px;margin:0 0 10px;text-shadow:0 2px 8px rgba(0,0,0,.25)}
.qiao-hero p{margin:0 0 20px;opacity:.9}
.qiao-hero-search{display:flex;background:#fff;border-radius:30px;padding:6px;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.qiao-hero-search input{flex:1;border:0;padding:10px 16px;border-radius:30px;font-size:14px;color:#333;background:transparent}
.qiao-hero-search button{border:0;padding:10px 22px;border-radius:24px;background:var(--main);color:#fff;cursor:pointer}

/* ===== 分类图标卡片 ===== */
.qiao-cat-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin:20px 0}
.qiao-cat-card{display:flex;align-items:center;gap:12px;background:var(--card);border-radius:14px;padding:16px;box-shadow:var(--shadow)}
.qiao-cat-card .qiao-cat-icon{width:44px;height:44px;font-size:18px}
.qiao-cat-card h3{margin:0;font-size:15px}
.qiao-cat-card p{margin:2px 0 0;font-size:12px;color:var(--sub)}

.qiao-section-title{margin:26px 0 14px;font-size:18px;font-weight:700;display:flex;align-items:center}
.qiao-section-title span{padding-left:10px;border-left:4px solid var(--main)}
.qiao-grid-rec .qiao-g-body{padding:10px 12px}
.qiao-grid-rec .qiao-g-body h2{font-size:14px;margin:0;-webkit-line-clamp:2}

/* ===== 移动端：顶栏精简，改用抽屉 ===== */
@media(max-width:800px){
  .qiao-burger{display:block}
  .qiao-nav-desktop,.qiao-search-desktop,.qiao-auth-desktop{display:none}
  .qiao-hero h1{font-size:22px}
  .qiao-cat-cards{grid-template-columns:1fr 1fr}
}