:root{--hyu-bg:#F3F7F8;--hyu-card:#FFFFFF;--hyu-text:#17343A;--hyu-main:#207C88;--hyu-accent:#D36A4A;--hyu-line:#D6E3E5;--hyu-mute:#5A7479}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body.hyu{margin:0;background:var(--hyu-bg);color:var(--hyu-text);font:17.5px/1.85 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;overflow-wrap:anywhere}
a{color:var(--hyu-main);text-decoration:none}
a:hover,a:focus-visible{text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--hyu-main);outline-offset:2px}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0}
.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hyu-skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 16px;z-index:10}
.hyu-skip:focus{left:8px}
.hyu-wrap{max-width:1320px;margin:0 auto;padding:0 24px}

/* 顶部 */
.hyu-head{background:var(--hyu-card);border-bottom:1px solid var(--hyu-line)}
.hyu-head-in{display:flex;align-items:center;gap:24px;min-height:64px}
.hyu-brand{font-size:22px;font-weight:700;letter-spacing:.18em;color:var(--hyu-text);white-space:nowrap}
.hyu-brand:hover{text-decoration:none;color:var(--hyu-main)}
.hyu-nav{flex:1}
.hyu-nav ul{display:flex;gap:8px;list-style:none}
.hyu-nav a{display:block;padding:6px 14px;color:var(--hyu-text);font-size:16px;border-bottom:2px solid transparent}
.hyu-nav a.is-cur,.hyu-nav a:hover{border-bottom-color:var(--hyu-accent);text-decoration:none;color:var(--hyu-main)}
.hyu-search{display:flex;gap:8px}
.hyu-search input{width:200px;height:38px;padding:0 12px;border:1px solid var(--hyu-line);border-radius:6px;font:inherit;font-size:15px;background:#fff;color:var(--hyu-text)}
.hyu-search button,.hyu-search-btn{height:38px;padding:0 16px;border:0;border-radius:6px;background:var(--hyu-main);color:#fff;font:inherit;font-size:15px;cursor:pointer}
.hyu-search-btn{display:none}

/* 布局 */
.hyu-main{padding:24px 0 48px}
.hyu-3col{display:grid;grid-template-columns:minmax(0,1fr);gap:24px}
.hyu-center{min-width:0}
.hyu-narrow{max-width:800px}
@media (min-width:1200px){
  .hyu-3col{grid-template-columns:160px minmax(0,1fr) 208px}
  .hyu-3col>.hyu-center:last-child{grid-column:2 / 4}
  .hyu-rail-l{position:sticky;top:16px;align-self:start}
}

/* 侧栏 */
.hyu-rail-h{margin:0 0 12px;font-size:15px;font-weight:700;letter-spacing:.1em;color:var(--hyu-mute)}
.hyu-situ{list-style:none;display:grid;gap:12px}
.hyu-situ a{display:block;padding:12px;background:var(--hyu-card);border:1px solid var(--hyu-line);border-radius:14px;color:var(--hyu-text)}
.hyu-situ a:hover{text-decoration:none;border-color:var(--hyu-main)}
.hyu-situ strong{display:block;font-size:16px;line-height:1.5}
.hyu-situ span{display:block;margin-top:4px;font-size:14px;line-height:1.6;color:var(--hyu-mute)}
.hyu-situ .is-cur a{border-left:3px solid var(--hyu-accent)}
@media (min-width:768px) and (max-width:1199px){.hyu-situ{grid-template-columns:repeat(4,1fr)}}
@media (max-width:767px){.hyu-situ{grid-template-columns:1fr 1fr}.hyu-situ span{display:none}}
.hyu-ext{list-style:none;display:grid;gap:12px}
.hyu-ext li{padding-left:12px;border-left:2px solid var(--hyu-line)}
.hyu-ext a{color:var(--hyu-text);font-size:15px;line-height:1.7}
.hyu-phrases{background:var(--hyu-card);border:1px solid var(--hyu-line);border-radius:14px;padding:16px;align-self:start}
.hyu-phrases ul{list-style:none;display:grid;gap:12px}
.hyu-phrases li{padding-left:12px;border-left:2px solid var(--hyu-accent);font-size:15px;line-height:1.7}
.hyu-tag{display:inline-block;margin:0 0 12px;padding:0 8px;font-size:13px;line-height:22px;color:var(--hyu-accent);border:1px solid var(--hyu-accent);border-radius:11px}
.hyu-note{margin:12px 0 0;font-size:13px;line-height:1.6;color:var(--hyu-mute)}

/* 标题与文字行 */
.hyu-home-head h1,.hyu-list-head h1,.hyu-h1{margin:0 0 8px;font-size:30px;line-height:1.35}
.hyu-home-head p,.hyu-intro{margin:0 0 24px;color:var(--hyu-mute);font-size:16px;line-height:1.7}
.hyu-list-head{margin-bottom:16px}
.hyu-sec-h{margin:32px 0 12px;font-size:24px;line-height:1.5}
.hyu-row{padding:16px 0 16px 16px;border-left:2px solid var(--hyu-line);margin-bottom:12px;background:transparent}
.hyu-row:hover{border-left-color:var(--hyu-main)}
.hyu-row-t{margin:0;font-size:21px;line-height:1.45}
.hyu-row-t a{color:var(--hyu-text)}
.hyu-row-s{margin:4px 0;font-size:16px;line-height:1.75;color:var(--hyu-text)}
.hyu-meta{margin:4px 0 0;font-size:14px;line-height:1.6;color:var(--hyu-mute)}

/* 首页导读 */
.hyu-lead-card{display:grid;grid-template-columns:368px minmax(0,1fr);gap:24px;background:var(--hyu-card);border:1px solid var(--hyu-line);border-radius:14px;padding:16px}
.hyu-lead-fig{margin:0}
.hyu-lead-fig img{width:368px;max-width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px}
.hyu-lead-body h3{margin:0 0 8px;font-size:24px;line-height:1.5}
.hyu-lead-body h3 a{color:var(--hyu-text)}
.hyu-lead-body p{margin:0 0 8px;font-size:16px;line-height:1.75}
.hyu-lead-body .hyu-meta{font-size:14px}
.hyu-empty{padding:16px;background:var(--hyu-card);border:1px solid var(--hyu-line);border-radius:14px;color:var(--hyu-mute)}
.hyu-quick{list-style:none;display:flex;flex-wrap:wrap;gap:12px;margin:16px 0}
.hyu-quick a{display:block;padding:6px 16px;background:var(--hyu-card);border:1px solid var(--hyu-line);border-radius:14px}

/* 分页 */
.hyu-pager{margin:32px 0 0}
.hyu-pager ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.hyu-pager a,.hyu-pager span{display:block;min-width:40px;padding:6px 14px;text-align:center;background:var(--hyu-card);border:1px solid var(--hyu-line);border-radius:8px;color:var(--hyu-text)}
.hyu-pager .current{background:var(--hyu-main);border-color:var(--hyu-main);color:#fff}

/* 文章 */
.hyu-article{background:var(--hyu-card);border:1px solid var(--hyu-line);border-radius:14px;padding:32px}
.hyu-crumb{margin-bottom:12px;font-size:14px;line-height:1.6;color:var(--hyu-mute)}
.hyu-abstract{margin:16px 0;padding:12px 16px;border-left:3px solid var(--hyu-accent);background:var(--hyu-bg);font-size:16px;line-height:1.75}
.hyu-toc{margin:16px 0;padding:12px 16px;border:1px solid var(--hyu-line);border-radius:10px;font-size:15px}
.hyu-toc summary{cursor:pointer;font-weight:700}
.hyu-toc ol{margin:8px 0 0 20px}
.hyu-body{max-width:760px;font-size:17.5px;line-height:1.85}
.hyu-body h2{margin:32px 0 12px;font-size:24px;line-height:1.5}
.hyu-body h3{margin:24px 0 8px;font-size:20px;line-height:1.5}
.hyu-body p{margin:0 0 16px}
.hyu-body ul,.hyu-body ol{margin:0 0 16px 24px}
.hyu-fig{margin:24px 0;max-width:640px}
.hyu-fig img{width:100%;max-width:640px;aspect-ratio:4/3;object-fit:cover;border-radius:10px}
.hyu-fig figcaption{margin-top:6px;font-size:13px;color:var(--hyu-mute)}
.hyu-related ul{list-style:none;display:grid;gap:8px}
.hyu-related li{padding-left:12px;border-left:2px solid var(--hyu-line)}
.hyu-pn{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;padding-top:16px;border-top:1px solid var(--hyu-line);font-size:15px}
.hyu-pn small{display:block;color:var(--hyu-mute);font-size:13px}
.hyu-pn-next{text-align:right}
.hyu-page{background:var(--hyu-card);border:1px solid var(--hyu-line);border-radius:14px;padding:32px}

/* 页脚 */
.hyu-foot{border-top:1px solid var(--hyu-line);background:var(--hyu-card);padding:24px 0;font-size:14px;color:var(--hyu-mute)}
.hyu-foot p{margin:0 0 4px}

/* 窄屏 */
@media (max-width:767px){
  .hyu-wrap{padding:0 11px}
  .hyu-head-in{flex-wrap:wrap;gap:8px 12px;padding-top:12px;padding-bottom:12px}
  .hyu-brand{flex:1;font-size:20px}
  .hyu-nav{order:3;flex:0 0 100%}
  .hyu-nav ul{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .hyu-nav a{padding:8px 12px;border:1px solid var(--hyu-line);border-radius:8px;text-align:center}
  .hyu-js .hyu-search-btn{display:inline-block}
  .hyu-js .hyu-search{display:none;order:4;flex:0 0 100%}
  .hyu-js .hyu-search.is-open{display:flex}
  .hyu-js .hyu-search.hyu-search-inline{display:flex;margin-top:16px}
  .hyu-search input{flex:1;width:auto;min-width:0}
  .hyu-home-head h1,.hyu-list-head h1,.hyu-h1{font-size:26px}
  .hyu-lead-card{grid-template-columns:1fr;padding:0;gap:0;border-width:1px 0;border-radius:0;overflow:hidden}
  .hyu-lead-fig img{width:100%;border-radius:0}
  .hyu-lead-body{padding:12px}
  .hyu-article,.hyu-page{padding:16px}
  .hyu-pn{grid-template-columns:1fr}
  .hyu-pn-next{text-align:left}
}
@media (max-width:359px){.hyu-wrap{padding:0 12px}}
@media (min-width:768px){.hyu-search-inline{margin-top:16px}}