:root{
  --bg:#FFFFFF; --surface:#FFFFFF;
  --ink:#161A21; --body:#454B57; --muted:#6B7280;
  --accent:#1D4ED8; --accent-ink:#1740B3; --accent-soft:#E9EFFC; --accent-line:#C9D7F7;
  --line:#E9ECF2; --line-soft:#F3F5F9;
  --sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --radius:10px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; font-family:var(--sans); background:var(--bg); color:var(--ink);
  font-size:16px; line-height:1.85; -webkit-font-smoothing:antialiased;
  display:flex; flex-direction:column; min-height:100vh;
}
img{max-width:100%; height:auto; border-radius:var(--radius)}
a{color:var(--accent); text-decoration:none}
a:hover{color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent); outline-offset:3px; border-radius:4px}
::selection{background:var(--accent-soft)}
.wrap{width:100%; max-width:760px; margin:0 auto; padding-left:max(20px,env(safe-area-inset-left)); padding-right:max(20px,env(safe-area-inset-right))}

/* ── 顶栏 ── */
.site-header{
  position:sticky; top:0; z-index:50; background:var(--bg);
  border-bottom:1px solid var(--line);
}
.site-header .inner{display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap; padding:14px 0}
.brand{display:inline-flex; align-items:center; gap:11px}
.brand .mark{
  width:36px; height:36px; border-radius:10px; background:var(--accent); color:#fff;
  font-size:17px; font-weight:800; display:inline-flex; align-items:center; justify-content:center;
  flex:0 0 auto; letter-spacing:0;
}
.brand .name{font-size:19px; font-weight:800; color:var(--ink); letter-spacing:.03em}
.nav{display:flex; gap:2px; flex-wrap:wrap}
.nav a{
  color:var(--muted); display:inline-flex; align-items:center; min-height:38px;
  padding:0 12px; border-radius:9px; font-size:14.5px;
  transition:background-color .15s ease-out,color .15s ease-out;
}
.nav a:hover{color:var(--accent); background:var(--accent-soft)}
.nav a.current{color:var(--accent); background:var(--accent-soft); font-weight:600}

.site-main{flex:1; padding:clamp(26px,5vw,42px) 0 0}
.archive-title{font-size:15px; font-weight:600; color:var(--muted); margin:0 0 20px}

/* ── 列表 ── */
.post-list{display:flex; flex-direction:column}
.post-item{padding:22px 0; border-bottom:1px solid var(--line-soft)}
.post-item:first-child{padding-top:4px}
.post-item-title{margin:0 0 9px; font-size:clamp(19px,4.6vw,22px); font-weight:700; line-height:1.45; letter-spacing:.01em}
.post-item-title a{color:var(--ink)}
.post-item-title a:hover{color:var(--accent)}
.post-item-meta{display:flex; align-items:center; gap:9px; font-size:13px; color:var(--muted); margin-bottom:9px}
.post-item-meta .sep{width:3px; height:3px; border-radius:50%; background:var(--line); display:inline-block}
.post-item-meta .cat a{color:var(--accent)}
.post-item-excerpt{margin:0; color:var(--body); font-size:15.5px}
.pager{display:flex; justify-content:space-between; gap:12px; margin:26px 0 0; font-size:15px}
.pager a{color:var(--accent)}
.empty{color:var(--muted)}

/* ── 文章 ── */
.post.single{margin-top:2px}
.post-title{margin:0 0 10px; font-size:clamp(23px,6vw,31px); font-weight:800; line-height:1.35; letter-spacing:.005em}
.post-meta{display:flex; align-items:center; gap:9px; font-size:13px; color:var(--muted); margin-bottom:26px; padding-bottom:16px; border-bottom:1px solid var(--line)}
.post-meta .sep{width:3px; height:3px; border-radius:50%; background:var(--line); display:inline-block}
.post-content{color:var(--body); font-size:16.5px; line-height:1.92}
.post-content h1,.post-content h2,.post-content h3,.post-content h4{color:var(--ink); font-weight:700; line-height:1.45; margin:1.7em 0 .7em}
.post-content h1{font-size:1.5em}
.post-content h2{font-size:1.3em; padding-bottom:.34em; border-bottom:1px solid var(--line)}
.post-content h3{font-size:1.15em}
.post-content h4{font-size:1.02em}
.post-content p{margin:0 0 1.05em}
.post-content ul,.post-content ol{margin:0 0 1.05em; padding-left:1.5em}
.post-content li{margin:.35em 0}
.post-content a{color:var(--accent); text-decoration:underline; text-underline-offset:3px; text-decoration-color:var(--accent-line)}
.post-content a:hover{text-decoration-color:var(--accent)}
.post-content blockquote{margin:1.25em 0; padding:.7em 1.15em; border-left:3px solid var(--accent); background:var(--accent-soft); border-radius:0 var(--radius) var(--radius) 0; color:#33405C}
.post-content blockquote p:last-child{margin-bottom:0}
.post-content code{font-family:var(--mono); font-size:.88em; background:#EEF2FB; color:#1740B3; padding:.12em .42em; border-radius:5px}
.post-content pre{background:#161A21; color:#E7EBF3; padding:16px 18px; border-radius:var(--radius); overflow:auto; font-family:var(--mono); font-size:13.5px; line-height:1.72; margin:1.25em 0}
.post-content pre code{background:none; color:inherit; padding:0; font-size:inherit}
.post-content hr{border:0; border-top:1px solid var(--line); margin:2em 0}
.post-content table{width:100%; border-collapse:collapse; margin:1.25em 0; font-size:15px; display:block; overflow-x:auto}
.post-content th,.post-content td{border:1px solid var(--line); padding:9px 13px; text-align:left}
.post-content th{background:var(--line-soft); color:var(--ink); font-weight:600}
.post-content img{margin:.5em 0}
.post-tags{margin-top:24px; display:flex; flex-wrap:wrap; gap:8px}
.post-tags a{
  display:inline-flex; align-items:center; min-height:30px; padding:2px 11px; border-radius:99px;
  background:var(--accent-soft); color:var(--accent); font-size:13px; text-decoration:none;
}
.post-tags a:hover{background:var(--accent); color:#fff}
.post-near{display:flex; justify-content:space-between; gap:16px; margin:34px 0 0; padding-top:18px; border-top:1px solid var(--line); font-size:14.5px; color:var(--muted)}
.post-near .next{text-align:right}
.notice{text-align:center; padding:64px 0}
.notice-title{font-size:60px; font-weight:800; color:var(--accent); margin:0 0 8px; letter-spacing:.02em}
.notice p{color:var(--muted)}

/* ── 页脚 ── */
.site-footer{
  margin-top:clamp(46px,9vw,76px); border-top:1px solid var(--line);
  padding:20px 0 max(32px,env(safe-area-inset-bottom)); font-size:13px; color:var(--muted);
}
.foot-row{display:flex; flex-wrap:wrap; gap:6px 20px; align-items:center; justify-content:space-between}
.foot-row .copy a{color:var(--muted)}
.foot-row .copy a:hover{color:var(--accent)}
.foot-links{display:inline-flex; align-items:center; gap:11px; flex-wrap:wrap}
.foot-links a{color:var(--muted); display:inline-flex; align-items:center; min-height:40px; border-bottom:1px solid transparent; transition:color .15s ease-out,border-color .15s ease-out}
.foot-links a:hover{color:var(--accent); border-bottom-color:var(--accent)}
.foot-links .dot{color:var(--line)}

@media (max-width:560px){
  .site-header .inner{padding:12px 0}
  .nav{width:100%; margin:2px -12px -4px}
  .post-near{flex-direction:column; gap:8px}
  .post-near .next{text-align:left}
  .foot-row{flex-direction:column; align-items:flex-start; gap:0}
}

/* ══════ 前台 v3：两栏 + 侧边栏（头像 / 分类 / 最近文章） ══════ */
.wrap{max-width:1080px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 302px;gap:clamp(26px,3.6vw,48px);align-items:start}
.site-main{min-width:0}
.site-sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:76px;align-self:start}
.widget{border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:#fff}
.widget-title{margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--line-soft);font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.profile{text-align:center;padding-top:22px}
.profile .avatar{width:88px;height:88px;border-radius:50%;display:block;margin:0 auto 12px;box-shadow:0 0 0 1px var(--line);background:var(--accent-soft)}
.profile-name{margin:0 0 6px;font-size:17px;font-weight:800;color:var(--ink)}
.profile-desc{margin:0;font-size:13.5px;line-height:1.75;color:var(--muted)}
.widget-list{list-style:none;margin:0;padding:0}
.widget-list li{border-bottom:1px solid var(--line-soft)}
.widget-list li:last-child{border-bottom:0}
.widget-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:40px;padding:6px 2px;color:var(--body);font-size:14.5px;text-decoration:none;transition:color .15s ease-out}
.widget-list a:hover{color:var(--accent)}
.widget-list .label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.widget-list .count{flex:0 0 auto;font-size:12px;line-height:1;color:var(--accent);background:var(--accent-soft);border-radius:99px;padding:5px 9px;min-width:24px;text-align:center;font-weight:600}
.widget-list.posts a .label{white-space:normal;line-height:1.5}
@media (max-width: 900px){
  .layout{grid-template-columns:1fr}
  .site-sidebar{position:static;top:auto;gap:18px;margin-top:8px}
}

/* 两栏顶部对齐修正 */
.layout{align-items:start;padding-top:clamp(26px,5vw,42px)}
.site-main{padding-top:0}
.site-sidebar{top:96px}
.profile .avatar{object-fit:cover;background:var(--accent-soft)}
@media (max-width: 900px){ .site-sidebar{top:auto} }

/* ══════ 侧边栏增强：标签云 / 站点统计 / 当前分类 ══════ */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{display:inline-flex;align-items:center;gap:6px;min-height:30px;padding:3px 11px;border-radius:99px;background:var(--accent-soft);color:var(--accent);font-size:13px;text-decoration:none;transition:background-color .15s ease-out,color .15s ease-out}
.tag-cloud a:hover{background:var(--accent);color:#fff}
.tag-cloud a .count{font-size:11px;opacity:.72}
.tag-cloud .none{font-size:13px;color:var(--muted)}
.stat-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.stat-list li{display:flex;flex-direction:column;gap:2px;padding:10px 12px;border:1px solid var(--line-soft);border-radius:10px;background:#FAFBFE}
.stat-list li span{font-size:12px;color:var(--muted)}
.stat-list li b{font-size:19px;font-weight:800;color:var(--accent);line-height:1.2}
.widget-list li.on a{color:var(--accent);font-weight:700}
.widget-list li.on .count{background:var(--accent);color:#fff}

/* 归档页标题强化 */
.site-main > .archive-title,main .archive-title{
  font-size:clamp(20px,4.4vw,24px);font-weight:800;color:var(--ink);
  margin:0 0 20px;padding-bottom:14px;border-bottom:1px solid var(--line);
  letter-spacing:.01em;
}
.post-item-meta .cat a{color:var(--accent);font-weight:600}

/* 终调：侧栏基线对齐 + 标签行距 */
.site-sidebar{margin-top:5px;top:101px}
.tag-cloud{gap:9px;row-gap:10px}
@media (max-width:900px){ .site-sidebar{margin-top:18px;top:auto} }

/* 空分类淡态 */
.widget-list li.empty a .label{color:var(--muted);font-weight:400}
.widget-list li.empty a:hover .label{color:var(--accent)}
.widget-list li.empty a{opacity:.75}

/* ══════ 手机：侧边栏置顶，立即可见 ══════ */
@media (max-width: 900px){
  .layout{display:flex;flex-direction:column;gap:20px}
  .site-sidebar{order:-1;position:static;top:auto;margin-top:0;gap:16px}
  .widget{padding:14px 16px}
  .profile{padding:16px 16px 14px}
  .profile .avatar{width:68px;height:68px;margin-bottom:9px}
  .profile-name{font-size:16px}
  .profile-desc{font-size:13px;line-height:1.7}
  .widget-title{font-size:14px;margin-bottom:9px;padding-bottom:8px}
  .widget-list a{min-height:38px;font-size:14px}
  /* 分类/标签在手机上双列铺开，省高度 */
  .widget-list.cats{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
  .stat-list{grid-template-columns:repeat(4,1fr);gap:8px}
  .stat-list li{padding:8px 6px;align-items:center;text-align:center}
  .stat-list li b{font-size:17px}
}

/* ══════ 手机：侧边栏 = 右侧滑出抽屉（与后台一致）══════ */
.side-toggle{display:none}
@media (max-width: 900px){
  .side-toggle{display:block;border:1px solid var(--line);border-radius:9px;margin:2px 0 2px 8px;flex:0 0 auto}
  .side-toggle summary{list-style:none;cursor:pointer;padding:0 14px;min-height:38px;line-height:38px;font-size:14px;font-weight:600;color:var(--accent);white-space:nowrap}
  .side-toggle summary::-webkit-details-marker{display:none}
  .side-toggle summary::marker{content:""}
  .side-toggle[open]{border-color:var(--accent);background:var(--accent-soft)}

  /* 正文占满，侧边栏脱离文档流 */
  .layout{display:block}
  .site-header .inner{flex-wrap:nowrap;gap:8px}
  .brand{min-width:0}

  .site-sidebar{
    display:none !important; position:fixed !important; top:0; right:0; bottom:0;
    width:min(84vw,332px) !important; height:100% !important; margin:0 !important;
    background:#fff; border-left:1px solid var(--line); border-right:0;
    box-shadow:-8px 0 30px rgba(22,26,33,.18);
    overflow-y:auto; -webkit-overflow-scrolling:touch;
    padding:16px 14px calc(28px + env(safe-area-inset-bottom)) !important;
    z-index:1002; flex-direction:column; gap:16px;
  }
  .site-sidebar::before{
    content:"侧边栏"; display:block; position:sticky; top:0; margin:-16px -14px 0; padding:14px 16px;
    background:#fff; border-bottom:1px solid var(--line);
    font-size:12px; font-weight:800; letter-spacing:.14em; color:var(--muted);
  }
  body:has(.side-toggle[open]) .site-sidebar{display:flex !important;}
  body:has(.side-toggle[open])::after{
    content:""; position:fixed; inset:0; background:rgba(15,23,42,.42); z-index:1001;
  }
  body:has(.side-toggle[open]){overflow:hidden;}

  .widget{padding:14px 16px}
  .profile{padding:16px 16px 14px}
  .profile .avatar{width:68px;height:68px;margin-bottom:9px}
  .profile-name{font-size:16px}
  .profile-desc{font-size:13px;line-height:1.7}
  .widget-title{font-size:14px;margin-bottom:9px;padding-bottom:8px}
  .widget-list a{min-height:38px;font-size:14px}
  .widget-list.cats{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
  .stat-list{grid-template-columns:repeat(4,1fr);gap:8px}
  .stat-list li{padding:8px 6px;align-items:center;text-align:center}
  .stat-list li b{font-size:17px}
}

/* 手机顶栏：品牌+按钮一行，导航换第二行，品牌名不折行 */
@media (max-width: 900px){
  .site-header .inner{flex-wrap:wrap;gap:8px;padding:10px 0}
  .brand{flex:1 1 auto;min-width:0}
  .brand .name{white-space:nowrap;font-size:17px}
  .brand .mark{width:32px;height:32px;font-size:15px}
  .side-toggle{order:2;margin:0}
  .nav{order:3;flex-basis:100%;width:100%;margin:0;gap:4px}
  .nav a{min-height:36px;padding:0 10px;font-size:14px}
}

/* ══════ 侧边栏移到「左侧」桌面左栏 + 手机从左滑出 ══════ */
.layout{grid-template-columns:302px minmax(0,1fr)}
.site-sidebar{order:-1}
.site-main{order:1}
@media (max-width: 900px){
  .site-sidebar{
    left:0 !important; right:auto !important;
    border-left:0 !important; border-right:1px solid var(--line) !important;
    box-shadow:8px 0 30px rgba(22,26,33,.18) !important;
  }
}