/* =============================================================================
   山风网 · 前台样式
   视觉来源：www.shanfeng.wang（同域自有资产）——配色令牌、字体栈、导航毛玻璃、
   蓝色渐变 Hero + 山峦、14px 圆角卡片与投影、深色 #0B1220 页脚，均按原站 1:1 移植。
   结构来源：本站 SSR 模板（src/render.js、src/routes/public.js）。
   ========================================================================== */

:root{
  /* —— www.shanfeng.wang 主色与中性色 —— */
  --primary:#0056B2;
  --primary-hover:#004A9A;
  --primary-active:#003F85;
  --primary-soft:#E6F0FA;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --border:#E9EBF0;
  --text:#111827;
  --text-dim:#6B7280;
  --success:#10B981;
  /* —— 深色带与页脚 —— */
  --ink:#0B1220;
  --dark-line:rgba(255,255,255,.08);
  --dark-text:#9CA3AF;
  --dark-muted:#6B7280;
  --dark-link:#BBD3F2;
  /* —— 圆角与阴影 —— */
  --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
  --shadow-lift:0 12px 30px rgba(16,24,40,.10);
  /* —— 栅格 —— */
  --content:1140px;
  --reading:760px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  font-size:15px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s,background-color .2s,border-color .2s}
h1,h2,h3,h4{margin:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:var(--primary-soft);color:var(--primary-active)}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;z-index:100;background:var(--primary);color:#fff;padding:10px 18px;border-radius:0 0 10px 0}
.skip-link:focus{left:0}

.container{max-width:var(--content);margin:0 auto;padding:0 24px}
.container.narrow{max-width:var(--reading)}
.page-pad{padding-top:28px;padding-bottom:72px}

/* ------------------------------ 顶部导航 ------------------------------ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(8px);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--border);
}
.nav-inner,.nav-links{max-width:var(--content);margin:0 auto;padding-left:24px;padding-right:24px}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:14px;padding-bottom:14px}

.brand{display:flex;align-items:center;gap:12px;flex:none;min-width:0}
.brand .logo{
  width:40px;height:40px;border-radius:10px;object-fit:cover;flex:none;
  box-shadow:0 4px 12px rgba(0,86,178,.25);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--text);white-space:nowrap}
.brand-text small{
  font-size:12px;color:var(--text-dim);white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;max-width:290px;
}

.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;flex:0 1 auto;min-width:0}
.top-search{
  display:flex;align-items:stretch;width:340px;max-width:100%;
  background:#fff;border:1px solid var(--border);border-radius:9px;overflow:hidden;
  transition:border-color .2s,box-shadow .2s;
}
.top-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.top-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  padding:9px 14px;font-size:14px;color:var(--text);
}
.top-search input::placeholder{color:#9CA3AF}
.top-search button{
  border:0;background:var(--primary);color:#fff;padding:0 18px;
  font-size:14px;font-weight:600;cursor:pointer;transition:background-color .2s;
}
.top-search button:hover{background:var(--primary-hover)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 18px;
  border-radius:9px;background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  white-space:nowrap;transition:background-color .2s;
}
.nav-cta:hover{background:var(--primary-hover)}

.site-nav{background:rgba(255,255,255,.65);border-top:1px solid var(--border)}
.nav-links{display:flex;flex-wrap:wrap;align-items:center;column-gap:26px}
.nav-item{
  position:relative;display:inline-block;padding:11px 0 9px;
  font-size:14px;color:var(--text-dim);border-bottom:2px solid transparent;
  transition:color .2s,border-color .2s;
}
.nav-item:hover{color:var(--primary)}
.nav-item.is-active{color:var(--primary);font-weight:600;border-bottom-color:var(--primary)}

/* ------------------------------ Hero ------------------------------ */
.hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#0056B2 0%,#004A9A 55%,#003F85 100%)}
.hero-inner{position:relative;z-index:2;max-width:var(--content);margin:0 auto;padding:88px 24px 132px}
.hero .eyebrow{
  display:inline-block;font-size:13px;letter-spacing:2px;color:var(--dark-link);
  background:rgba(255,255,255,.10);padding:6px 14px;border-radius:999px;
}
.hero h1{margin-top:20px;font-size:44px;font-weight:800;letter-spacing:1px}
.hero .sub{margin-top:18px;max-width:680px;font-size:18px;line-height:1.75;color:#D7E4F6}
.hero .actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.hero .btn-light{background:#fff;color:var(--primary)}
.hero .btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.18)}
.hero .btn-ghost{border-color:rgba(255,255,255,.5);background:transparent;color:#fff}
.hero .btn-ghost:hover{background:rgba(255,255,255,.12)}
.mountains{position:absolute;left:0;right:0;bottom:0;z-index:1;height:150px;pointer-events:none}
.mountains svg{width:100%;height:100%;display:block}

/* ------------------------------ 按钮 ------------------------------ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border:1px solid transparent;border-radius:10px;
  background:none;font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .2s,border-color .2s,color .2s,transform .15s,box-shadow .2s;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-ghost{background:#fff;color:var(--text);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}

/* ------------------------------ 区块 / 概览 ------------------------------ */
.section{max-width:var(--content);margin:0 auto;padding:64px 24px 72px}
.overview{margin-bottom:52px}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.stat{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:22px 24px;box-shadow:var(--shadow)}
.stat .num{font-size:26px;font-weight:800;line-height:1.2;color:var(--primary);letter-spacing:.5px}
.stat .lbl{margin-top:6px;font-size:13px;color:var(--text-dim)}

.layout-two{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;align-items:start}
.main-col{min-width:0;scroll-margin-top:110px}
.side-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px;min-width:0}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.kicker{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--primary)}
.kicker::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--primary)}
.sec-title{font-size:24px;font-weight:800;letter-spacing:.5px}
.kicker + .sec-title{margin-top:8px}
.sec-meta{font-size:13px;color:var(--text-dim)}

/* ------------------------------ 文章列表 ------------------------------ */
.entry-list{display:flex;flex-direction:column;gap:18px}
.entry{
  display:grid;grid-template-columns:minmax(0,1fr) 180px;gap:20px;align-items:start;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
  transition:transform .18s,box-shadow .18s,border-color .18s;
}
.entry:not(.has-cover),.entry-feature{grid-template-columns:minmax(0,1fr)}
.entry:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:#D7DEE8}
.entry-main{min-width:0}
.entry-feature{padding:24px}
.entry-hero,.entry-thumb{
  display:block;border-radius:12px;overflow:hidden;border:1px solid var(--border);
  background:var(--primary-soft);
}
.entry-hero{aspect-ratio:21/9;margin-bottom:18px}
.entry-thumb{aspect-ratio:16/10}
.entry-hero img,.entry-thumb img{width:100%;height:100%;object-fit:cover}
.tag-cat{
  display:inline-block;font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border-radius:999px;padding:5px 14px;
  transition:background-color .2s;
}
.tag-cat:hover{background:#D6E6F7}
.entry-title{margin:12px 0 8px;font-size:22px;font-weight:700;line-height:1.4}
.entry-title a:hover{color:var(--primary)}
.entry-summary{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14.5px;line-height:1.75;color:var(--text-dim);
}
.entry-feature .entry-title{font-size:28px}
.entry-feature .entry-summary{font-size:16px;-webkit-line-clamp:3}
.entry-meta{margin-top:14px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-dim)}
.entry-meta .dot{color:#CBD5E1}
.empty{
  padding:44px 24px;text-align:center;font-size:14.5px;color:var(--text-dim);
  background:var(--card);border:1px dashed var(--border);border-radius:var(--radius);
}

/* ------------------------------ 侧栏卡片 ------------------------------ */
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.panel-title{font-size:17px;font-weight:700}

.rank-list{padding-top:8px}
.rank-item{display:flex;align-items:flex-start;gap:12px;padding:11px 0;border-bottom:1px solid #F2F4F7}
.rank-item:last-child{border-bottom:0;padding-bottom:0}
.rank-item.empty{color:var(--text-dim);font-size:13px}
.rank-no{
  flex:none;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:700;
}
.rank-item:nth-child(-n+3) .rank-no{background:var(--primary);color:#fff}
.rank-link{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14px;line-height:1.6;color:var(--text);
}
.rank-link:hover{color:var(--primary)}

.cat-index{padding-top:8px}
.cat-index li a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;font-size:14px;border-bottom:1px solid #F2F4F7}
.cat-index li:last-child a{border-bottom:0;padding-bottom:0}
.cat-index li a:hover{color:var(--primary)}
.cat-index-name{display:inline-flex;align-items:center;gap:9px;min-width:0}
.cat-ico{
  flex:none;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:700;
}
.cat-n{flex:none;font-size:13px;color:var(--text-dim)}

/* ------------------------------ 面包屑 / 页头 ------------------------------ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:6px 0 20px;font-size:14px;color:var(--text-dim)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#CBD5E1}
.crumb strong{color:var(--text);font-weight:600}

.cat-head{padding-bottom:24px;margin-bottom:28px;border-bottom:1px solid var(--border)}
.cat-head h1{font-size:32px;font-weight:800;letter-spacing:.5px}
.cat-head p{margin-top:12px;max-width:var(--reading);font-size:15px;color:var(--text-dim)}
.cat-head .cat-meta{font-size:14px}
.cat-meta b{font-size:16px;color:var(--primary)}

/* ------------------------------ 分页 ------------------------------ */
.pager{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:36px}
.pg{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:42px;padding:0 14px;border:1px solid var(--border);
  border-radius:9px;background:#fff;color:var(--text-dim);font-size:14px;font-weight:600;
  transition:border-color .2s,color .2s,background-color .2s;
}
.pg:hover{border-color:var(--primary);color:var(--primary)}
.pg.current{background:var(--primary);border-color:var(--primary);color:#fff}

/* ------------------------------ 文章详情 ------------------------------ */
.article{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow)}
.art-head{padding-bottom:22px;margin-bottom:26px;border-bottom:1px solid var(--border)}
.art-title{margin-top:14px;font-size:34px;font-weight:800;line-height:1.32;letter-spacing:.5px}
.art-lead{margin-top:16px;font-size:17px;line-height:1.8;color:var(--text-dim)}
.art-meta{margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-dim)}
.art-meta .dot{color:#CBD5E1}
.art-cover{margin:0 0 28px;border-radius:12px;overflow:hidden;border:1px solid var(--border);background:var(--primary-soft)}
.art-cover img{width:100%;max-height:440px;object-fit:cover}

.art-content{font-size:16px;line-height:1.9;color:#1F2937;overflow-wrap:break-word;word-break:break-word}
.art-content > * + *{margin-top:18px}
.art-content p{margin:0}
.art-content h2{margin-top:34px;font-size:24px;font-weight:700;color:var(--text)}
.art-content h3{margin-top:28px;font-size:20px;font-weight:700;color:var(--text)}
.art-content h4{margin-top:24px;font-size:17px;font-weight:700;color:var(--text)}
.art-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.art-content a:hover{color:var(--primary-hover)}
.art-content ul{list-style:disc;padding-left:26px}
.art-content ol{list-style:decimal;padding-left:26px}
.art-content li{margin-top:8px}
.art-content img{border-radius:12px;border:1px solid var(--border)}
.art-content figure{margin:0}
.art-content figcaption{margin-top:8px;font-size:13px;color:var(--text-dim);text-align:center}
.art-content blockquote{
  padding:16px 22px;border-left:3px solid var(--primary);border-radius:0 12px 12px 0;
  background:var(--primary-soft);color:#334155;
}
.art-content code{
  padding:2px 6px;border-radius:6px;background:var(--primary-soft);
  color:var(--primary-active);font-size:14px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
.art-content pre{padding:18px 20px;border-radius:12px;background:var(--ink);color:#E5E7EB;overflow:auto;border:0}
.art-content pre code{padding:0;background:none;color:inherit;font-size:13.5px}
.art-content table{width:100%;border-collapse:collapse;font-size:14px}
.art-content th,.art-content td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.art-content th{background:var(--bg);font-weight:600}
.art-content hr{border:0;border-top:1px solid var(--border)}

.art-tags{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-block;padding:7px 16px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:600;
  transition:background-color .2s;
}
.tag:hover{background:#D6E6F7}

.art-nav{margin-top:32px;padding-top:24px;border-top:1px solid var(--border);display:grid;gap:12px}
.art-nav .row{display:flex;align-items:baseline;gap:12px;font-size:14px}
.art-nav .k{flex:none;min-width:56px;color:var(--text-dim)}
.art-nav .none{color:#9CA3AF}
.art-nav a:hover{color:var(--primary)}

.related{margin-top:40px;padding:28px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.related-list{padding-top:6px}
.related-list li{padding:14px 0;border-bottom:1px solid var(--border)}
.related-list li:last-child{border-bottom:0;padding-bottom:0}
.related-list a{font-size:16px;font-weight:600;line-height:1.5}
.related-list a:hover{color:var(--primary)}
.related-list .meta{margin-top:6px;font-size:13px;color:var(--text-dim)}

/* ------------------------------ 404 ------------------------------ */
.notfound{padding:56px 32px;text-align:center;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.notfound .code{font-size:56px;font-weight:800;line-height:1;letter-spacing:2px;color:var(--primary)}
.notfound h1{margin-top:16px;font-size:26px;font-weight:800}
.notfound p{margin-top:12px;font-size:15px;color:var(--text-dim)}
.notfound-actions{margin-top:28px;display:flex;flex-wrap:wrap;justify-content:center;gap:14px}

/* ------------------------------ 页脚 ------------------------------ */
.site-footer{background:var(--ink);color:var(--dark-text);font-size:13px}
.footer-inner{
  max-width:var(--content);margin:0 auto;padding:44px 24px 28px;
  display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,2fr);gap:36px;
  border-bottom:1px solid var(--dark-line);
}
.footer-brand{display:flex;align-items:flex-start;gap:12px}
.footer-brand .logo{width:40px;height:40px;border-radius:10px;object-fit:cover;flex:none}
.footer-brand strong{color:#fff;font-size:15px;font-weight:700}
.footer-brand p{margin-top:8px;max-width:340px;line-height:1.7;color:var(--dark-muted)}
.footer-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:24px}
.footer-cols h4{margin-bottom:10px;font-size:14px;font-weight:600;color:#fff}
.footer-cols a,.footer-cols span{display:block;padding:4px 0;color:var(--dark-text)}
.site-footer a{color:var(--dark-link)}
.site-footer a:hover{color:#fff}
.footer-bottom{
  max-width:var(--content);margin:0 auto;padding:20px 24px 28px;
  display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px;
  font-size:12.5px;color:var(--dark-muted);
}

/* ------------------------------ 返回顶部 ------------------------------ */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:40;
  width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--border);color:var(--primary);
  box-shadow:var(--shadow);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s,transform .25s,visibility .25s,background-color .2s,color .2s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--primary);border-color:var(--primary);color:#fff}

/* ------------------------------ 响应式 ------------------------------ */
@media (max-width:1024px){
  .layout-two{grid-template-columns:minmax(0,1fr) 300px;gap:28px}
}

@media (max-width:900px){
  .nav-right{flex:1 1 auto}
  .top-search{width:auto;flex:1 1 auto}
  .layout-two{grid-template-columns:minmax(0,1fr)}
  .side-col{position:static}
  .hero-inner{padding:64px 24px 112px}
  .hero h1{font-size:36px}
  .hero .sub{font-size:16px}
  .hero .actions{margin-top:28px}
  .section{padding:48px 24px 60px}
  .overview{margin-bottom:40px}
  .footer-inner{grid-template-columns:minmax(0,1fr);gap:28px}
  .stats{gap:16px}
}

@media (max-width:768px){
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat:last-child{grid-column:1 / -1}
  .entry-title{font-size:20px}
  .entry-feature .entry-title{font-size:24px}
  .cat-head h1{font-size:28px}
  .art-title{font-size:28px}
  .art-content h2{font-size:21px}
  .art-content h3{font-size:19px}
}

@media (max-width:640px){
  .container{padding:0 20px}
  .nav-inner,.nav-links,.hero-inner,.footer-inner,.footer-bottom{padding-left:20px;padding-right:20px}
  .nav-inner{flex-wrap:wrap;row-gap:10px}
  .brand-text small{display:none}
  .nav-right{flex:1 1 100%;flex-wrap:wrap;justify-content:flex-end;gap:10px}
  .nav-cta{order:1;flex:1 1 auto;max-width:180px}
  .top-search{order:2;width:100%;flex:1 1 100%}
  .nav-links{column-gap:20px}
  .nav-item{padding:9px 0 7px;font-size:13.5px}

  .hero-inner{padding:52px 20px 94px}
  .hero h1{margin-top:16px;font-size:30px}
  .hero .sub{font-size:15px}
  .hero .eyebrow{font-size:12px}
  .btn{height:44px;padding:0 20px;font-size:14.5px}
  .mountains{height:100px}

  .section{padding:40px 20px 52px}
  .overview{margin-bottom:32px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .stat{padding:16px 18px}
  .stat .num{font-size:21px}
  .stat .lbl{font-size:12.5px}
  .sec-title{font-size:20px}
  .sec-head{margin-bottom:16px}

  .entry-list{gap:14px}
  .entry{grid-template-columns:minmax(0,1fr) 96px;gap:14px;padding:16px}
  .entry:not(.has-cover),.entry-feature{grid-template-columns:minmax(0,1fr)}
  .entry-feature{padding:18px}
  .entry-hero{margin-bottom:14px;border-radius:10px}
  .entry-thumb{border-radius:10px}
  .entry-title{margin:10px 0 6px;font-size:17px}
  .entry-feature .entry-title{font-size:21px}
  .entry-summary{font-size:13.5px;-webkit-line-clamp:2}
  .entry-feature .entry-summary{font-size:14.5px;-webkit-line-clamp:3}
  .entry-meta{margin-top:10px;font-size:12px;gap:8px}

  .panel{padding:20px}
  .cat-head{padding-bottom:18px;margin-bottom:20px}
  .cat-head h1{font-size:24px}
  .cat-head p{font-size:14px}
  .pg{min-width:38px;height:38px;font-size:13px}

  .article{padding:22px 18px}
  .art-title{font-size:24px}
  .art-lead{font-size:15px}
  .art-content{font-size:15.5px}
  .art-content h2{font-size:20px;margin-top:28px}
  .related{padding:20px}
  .related-list a{font-size:15px}

  .notfound{padding:40px 20px}
  .notfound .code{font-size:44px}
  .notfound h1{font-size:22px}
  .to-top{right:14px;bottom:16px}
}