/* ==========================================================================
   Inkwell — 前台样式（仿 WordPress 2024/2025 风格，中文排版优化）
   ========================================================================== */

:root{
  --key:#0d9488;
  --key-soft:color-mix(in srgb,var(--key) 10%,transparent);
  --bg:#f6f7f9;
  --surface:#fff;
  --surface-2:#fafbfc;
  --surface-3:#f0f2f5;
  --text:#1a1d21;
  --text-2:#525b68;
  --muted:#8a93a0;
  --border:#e6e9ee;
  --border-2:#d3d8e0;
  --shadow-sm:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.06);
  --shadow-md:0 4px 12px rgba(16,24,40,.06),0 16px 40px rgba(16,24,40,.08);
  --radius:14px;
  --maxw:1440px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}
html[data-theme="dark"]{
  --key-soft:color-mix(in srgb,var(--key) 22%,transparent);
  --bg:#0d1014; --surface:#15191f; --surface-2:#12161b; --surface-3:#1b2027;
  --text:#e8eaee; --text-2:#aab2bd; --muted:#7c8593;
  --border:#232931; --border-2:#303844;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4); --shadow-md:0 4px 12px rgba(0,0,0,.4),0 16px 40px rgba(0,0,0,.5);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;border:0;display:block}
a{color:var(--key);text-decoration:none;transition:opacity .15s}
a:hover{opacity:.8}
button{font-family:inherit}
::selection{background:color-mix(in srgb,var(--key) 22%,transparent)}
:focus-visible{outline:2px solid var(--key);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,3vw,56px)}
.wrap.narrow{max-width:860px}
.wrap.post-wrap{max-width:none}
.muted{color:var(--muted)}
.small{font-size:13px}
.right{text-align:right}
.nowrap{white-space:nowrap}
.grow{flex:1}
.empty{color:var(--muted);padding:32px;text-align:center}

/* ---------------- header ---------------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--surface) 88%,transparent);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:750;font-size:17.5px;letter-spacing:-.01em}
.brand img{width:32px;height:32px;border-radius:9px;object-fit:cover}
.brand-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;color:#fff;font-size:15px;
  background:linear-gradient(135deg,var(--key),color-mix(in srgb,var(--key) 45%,#7c3aed));
  box-shadow:0 4px 12px color-mix(in srgb,var(--key) 30%,transparent);
}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav a{
  padding:7px 12px;border-radius:8px;color:var(--text-2);font-size:14.5px;font-weight:550;white-space:nowrap;
}
.nav a:hover{background:var(--surface-3);color:var(--text);opacity:1}
.icon-btn{
  width:36px;height:36px;display:grid;place-items:center;cursor:pointer;
  border:1px solid var(--border);background:var(--surface);border-radius:9px;color:var(--text-2);
}
.icon-btn:hover{color:var(--text);border-color:var(--border-2)}
.icon-btn svg{width:17px;height:17px}

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 16px;border-radius:9px;border:1px solid var(--border-2);
  background:var(--surface);color:var(--text-2);font-size:14px;font-weight:600;
  cursor:pointer;transition:all .15s;white-space:nowrap;font-family:inherit;
}
.btn:hover{border-color:var(--key);color:var(--key);opacity:1}
.btn.primary{background:var(--key);border-color:var(--key);color:#fff;box-shadow:0 4px 12px color-mix(in srgb,var(--key) 26%,transparent)}
.btn.primary:hover{background:color-mix(in srgb,var(--key) 88%,#000);color:#fff}
.btn.danger{color:#c0392b;border-color:color-mix(in srgb,#c0392b 30%,var(--border))}
.btn.danger:hover{background:#c0392b;color:#fff;border-color:#c0392b}
.btn-sm{padding:6px 11px;font-size:13px;border-radius:7px}
.btn.block{width:100%}

/* ---------------- layout ---------------- */
.site-main{padding:34px 0 60px;min-height:60vh}
.layout{display:grid;grid-template-columns:minmax(0,1fr) clamp(280px,20vw,340px);gap:clamp(24px,2.4vw,44px);align-items:start}
.content{min-width:0}

/* ---------------- hero ---------------- */
.hero{
  position:relative;overflow:hidden;margin-bottom:28px;padding:32px 34px;border-radius:20px;
  border:1px solid var(--border);background:
    radial-gradient(760px 260px at 88% -30%,color-mix(in srgb,var(--key) 15%,transparent),transparent 62%),
    radial-gradient(520px 220px at 4% 130%,color-mix(in srgb,#7c3aed 12%,transparent),transparent 60%),
    var(--surface);
  box-shadow:var(--shadow-sm);
}
.hero h1{margin:0 0 10px;font-size:clamp(24px,3.6vw,34px);font-weight:800;letter-spacing:-.022em;line-height:1.28}
.hero p{margin:0;color:var(--text-2);font-size:16px;max-width:60ch}
.hero-meta{display:flex;gap:8px;margin-top:16px;font-size:13px;color:var(--muted);font-weight:600}

/* ---------------- post cards ---------------- */
.post-list{
  display:grid;gap:22px;align-items:stretch;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
}
@media (min-width:1600px){
  .post-list{grid-template-columns:repeat(auto-fill,minmax(330px,1fr))}
}
.post-list.compact{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:stretch}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--border-2)}
.card-cover{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--surface-3)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.2,1)}
.card-cover.broken{display:none}
img.broken{display:none}
.post-card:hover .card-cover img{transform:scale(1.04)}
.card-body{display:flex;flex-direction:column;gap:9px;padding:18px 20px 20px;flex:1;min-height:0}
.card-tags{display:flex;flex-wrap:wrap;gap:6px}
.card-tags a{
  padding:3px 9px;border-radius:6px;font-size:11.5px;font-weight:700;letter-spacing:.03em;
  background:var(--key-soft);color:var(--key);text-transform:uppercase;
}
.card-tags a:hover{background:var(--key);color:#fff;opacity:1}
.card-title{margin:0;font-size:18px;line-height:1.45;font-weight:730;letter-spacing:-.01em}
.card-title a{color:var(--text)}
.card-title a:hover{color:var(--key);opacity:1}
.card-excerpt{
  margin:0;color:var(--text-2);font-size:14.5px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:7px;margin-top:auto;padding-top:6px;font-size:12.8px;color:var(--muted);font-weight:500}
.read-more{color:var(--key);font-weight:650}
.compact .card-title{font-size:15.5px}
.compact .card-excerpt{display:none}
.compact .card-body{padding:14px 16px 16px}

/* ---------------- pager ---------------- */
.pager{display:flex;align-items:center;justify-content:center;gap:12px;margin:30px 0 0}
.pager a,.pager .current{
  padding:9px 16px;border-radius:10px;border:1px solid var(--border);background:var(--surface);
  font-size:14px;font-weight:600;color:var(--text-2);box-shadow:var(--shadow-sm);
}
.pager a:hover{border-color:var(--key);color:var(--key);opacity:1}
.pager .current{background:var(--key);border-color:var(--key);color:#fff}

/* ---------------- sidebar ---------------- */
.sidebar{position:sticky;top:82px;display:flex;flex-direction:column;gap:18px}
.widget{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm)}
.widget h3{
  margin:0 0 12px;font-size:12.5px;font-weight:750;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  display:flex;align-items:center;gap:8px;
}
.widget h3::before{content:"";width:4px;height:13px;border-radius:2px;background:var(--key)}
.about{display:flex;gap:12px;align-items:flex-start}
.about-avatar{width:44px;height:44px;border-radius:50%;object-fit:cover;flex:0 0 44px}
.about strong{display:block;font-size:14.5px;margin-bottom:4px}
.about p{margin:0}
.tag-cloud{display:flex;flex-wrap:wrap;gap:7px}
.tag-cloud a{
  display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:7px;
  background:var(--surface-3);border:1px solid var(--border);color:var(--text-2);font-size:13px;font-weight:600;
}
.tag-cloud a span{color:var(--muted);font-size:11.5px}
.tag-cloud a:hover{border-color:var(--key);color:var(--key);opacity:1}

/* ---------------- post single ---------------- */
.post{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}
.post-header{padding:28px 34px 0}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;font-size:12.8px;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--text-2)}
.crumbs .current{max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-title{margin:0 0 14px;font-size:clamp(24px,3.4vw,33px);font-weight:800;letter-spacing:-.022em;line-height:1.3}
.post-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--muted);font-weight:500}
.post-cover{margin:24px 34px 0;border-radius:12px;overflow:hidden}
.post-cover img{width:100%;max-height:420px;object-fit:cover}
.post-tags{display:flex;flex-wrap:wrap;gap:8px;padding:0 34px}
.post-tags a{
  padding:5px 12px;border-radius:999px;background:var(--surface-3);border:1px solid var(--border);
  color:var(--text-2);font-size:12.8px;font-weight:600;
}
.post-tags a:hover{border-color:var(--key);color:var(--key);opacity:1}
.post-actions{display:flex;gap:8px;padding:20px 34px 30px;border-top:1px solid var(--border);margin-top:24px}

/* ---------------- prose (文章正文排版) ---------------- */
.prose{font-size:16.5px;line-height:1.9;color:var(--text);padding:26px clamp(22px,3vw,54px) 8px;overflow-wrap:break-word}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 1.25em}
.prose h1,.prose h2,.prose h3,.prose h4,.prose h5,.prose h6{margin:1.9em 0 .7em;line-height:1.35;font-weight:750;letter-spacing:-.014em;scroll-margin-top:84px}
.prose h1{font-size:27px;padding-bottom:.3em;border-bottom:1px solid var(--border)}
.prose h2{font-size:23px;position:relative;padding-left:14px}
.prose h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4.5px;border-radius:3px;
  background:linear-gradient(180deg,var(--key),color-mix(in srgb,var(--key) 45%,#7c3aed));
}
.prose h3{font-size:19.5px}
.prose h4{font-size:17px}
.prose a{border-bottom:1px solid color-mix(in srgb,var(--key) 35%,transparent);font-weight:500}
.prose a:hover{border-bottom-color:var(--key)}
/* 包着图片的链接不该带下划线（徽章、banner 等） */
.prose a:has(> img){border-bottom:0}
.prose strong{font-weight:760}
.prose ul,.prose ol{margin:0 0 1.25em;padding-left:1.5em}
.prose li{margin:.4em 0}
.prose li::marker{color:var(--key)}
.prose blockquote{
  margin:1.5em 0;padding:14px 20px;border-left:4px solid var(--key);background:var(--surface-2);
  border-radius:0 12px 12px 0;color:var(--text-2);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose hr{border:0;height:1px;background:var(--border);margin:2.2em 0}
.prose img{border-radius:11px;margin:1.3em auto;box-shadow:var(--shadow-sm)}
.prose code{
  font-family:var(--mono);font-size:.87em;padding:.16em .42em;border-radius:6px;
  background:color-mix(in srgb,var(--key) 8%,var(--surface-3));border:1px solid var(--border);
  color:color-mix(in srgb,var(--key) 75%,var(--text));
}
.prose table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:14.5px;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.prose thead th{background:var(--surface-3);text-align:left;padding:10px 13px;font-weight:650;border-bottom:1px solid var(--border-2);white-space:nowrap}
.prose tbody td{padding:10px 13px;border-bottom:1px solid var(--border);color:var(--text-2);vertical-align:top}
.prose tbody tr:last-child td{border-bottom:0}
.prose tbody tr:nth-child(even){background:var(--surface-2)}
.prose .video-wrap{position:relative;padding-top:56.25%;margin:1.2em 0;border-radius:11px;overflow:hidden;background:#000}
.prose .video-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.prose .toc{background:var(--surface-2);border:1px solid var(--border);border-radius:11px;padding:14px 20px;margin:0 0 1.6em;font-size:14px}
.prose .toc>p:first-child{margin:0 0 8px;font-size:12px;font-weight:750;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.prose .toc ul{list-style:none;margin:0;padding:0}
.prose .toc li a{display:block;padding:3px 0;color:var(--text-2);border:0}
.prose .toc li a:hover{color:var(--key)}
.prose .footnote{font-size:13.5px;color:var(--muted);border-top:1px solid var(--border);margin-top:2em;padding-top:1em}
.prose .task-list{list-style:none;padding-left:.2em}
.prose .task-list input{margin-right:.5em;accent-color:var(--key)}
.prose mark{background:color-mix(in srgb,#facc15 45%,transparent);padding:0 .15em;border-radius:3px}
.prose kbd{font-family:var(--mono);font-size:12.5px;padding:2px 6px;border:1px solid var(--border-2);border-bottom-width:2px;border-radius:5px;background:var(--surface-2)}

/* ---------------- code block ---------------- */
.code-block{position:relative;margin:1.5em 0;border-radius:11px;overflow:hidden;background:#0f141b;border:1px solid #1e2733}
.code-block pre{margin:0;padding:16px 18px;overflow:auto;font-family:var(--mono);font-size:13.4px;line-height:1.72;color:#d7e0ea}
.code-block pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit;white-space:pre;display:block;min-width:max-content}
.code-block::after{
  content:attr(data-lang);position:absolute;top:8px;right:64px;font-size:11px;color:#5d6b7c;
  font-family:var(--mono);letter-spacing:.06em;text-transform:uppercase;
}
.code-copy{
  position:absolute;top:7px;right:8px;padding:4px 10px;border-radius:6px;cursor:pointer;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#c9d4e0;
  font-size:11.5px;font-weight:600;opacity:0;transition:opacity .18s;
}
.code-block:hover .code-copy{opacity:1}
.code-copy:hover{background:rgba(255,255,255,.16)}
.code-copy.done{background:var(--key);border-color:transparent;color:#fff}
.tok-keyword{color:#c792ea}
.tok-string{color:#c3e88d}
.tok-comment{color:#637777;font-style:italic}
.tok-number{color:#f78c6c}
.tok-fn{color:#82aaff}

/* ---------------- comments ---------------- */
.comments{margin-top:26px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px 30px;box-shadow:var(--shadow-sm)}
.section-title{margin:0 0 16px;font-size:13px;font-weight:750;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:8px}
.section-title::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--key)}
.section-title .count{color:var(--key);font-size:13px}
.comment{padding:14px 0;border-bottom:1px solid var(--border)}
.comment:last-child{border-bottom:0}
.comment-head{display:flex;align-items:baseline;gap:10px;margin-bottom:4px}
.comment-head strong{font-size:14.5px}
.comment-head time{font-size:12px;color:var(--muted)}
.comment-body{font-size:14.8px;color:var(--text-2);line-height:1.75}
.comment-form{margin-top:20px;padding-top:18px;border-top:1px solid var(--border)}
.comment-form h3{margin:0 0 14px;font-size:14.5px}
.comment-form label{display:block;margin-bottom:12px;font-size:13px;color:var(--text-2);font-weight:600}
.comment-form input,.comment-form textarea{
  width:100%;margin-top:5px;padding:9px 12px;border-radius:8px;border:1px solid var(--border-2);
  background:var(--surface-2);color:var(--text);font-size:14px;font-family:inherit;outline:none;resize:vertical;
}
.comment-form input:focus,.comment-form textarea:focus{border-color:var(--key);box-shadow:0 0 0 3px var(--key-soft)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-msg{font-size:13px;color:var(--muted);margin:8px 0 0}
.form-msg.ok{color:#0f9d6e}.form-msg.err{color:#c0392b}

/* ---------------- page head / tags / archive ---------------- */
.page-head{margin:0 0 24px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.page-head h1{margin:0 0 6px;font-size:26px;font-weight:800;letter-spacing:-.02em}
.page-head p{margin:0}
.tag-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.tag-card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;padding:16px 18px;
  background:var(--surface);border:1px solid var(--border);border-radius:12px;color:var(--text);
  box-shadow:var(--shadow-sm);transition:all .16s;
}
.tag-card:hover{border-color:var(--key);transform:translateY(-2px);opacity:1}
.tag-name{font-weight:650;font-size:15px}
.tag-count{font-size:12.5px;color:var(--key);background:var(--key-soft);padding:2px 9px;border-radius:999px;font-weight:700}
.archive-group{margin-bottom:28px}
.archive-year{display:flex;align-items:center;gap:10px;font-size:20px;margin:0 0 12px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.archive-year span{font-size:12.5px;font-weight:600;color:var(--muted);background:var(--surface-3);padding:2px 9px;border-radius:999px}
.archive-list{list-style:none;margin:0;padding:0}
.archive-list li{display:flex;align-items:baseline;gap:12px;padding:9px 4px;border-bottom:1px dashed var(--border)}
.archive-list li:last-child{border-bottom:0}
.archive-list a{color:var(--text);font-weight:550;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.archive-list a:hover{color:var(--key);opacity:1}
.archive-list time{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.search-form{display:flex;gap:10px;margin-bottom:20px}
.search-form input{
  flex:1;height:44px;padding:0 16px;border-radius:10px;border:1px solid var(--border-2);
  background:var(--surface);color:var(--text);font-size:15px;outline:none;
}
.search-form input:focus{border-color:var(--key);box-shadow:0 0 0 3px var(--key-soft)}
.error-page{text-align:center;padding:60px 0}
.error-page h1{font-size:64px;margin:0;color:var(--key)}

/* ---------------- footer ---------------- */
.site-footer{border-top:1px solid var(--border);background:var(--surface);padding:28px 0;margin-top:auto}
.site-footer p{margin:0;font-size:13.5px;color:var(--muted)}
.site-footer .muted{margin-top:4px;font-size:12.5px}

/* ---------------- responsive ---------------- */
@media (max-width:960px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
  .post-list.compact{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  .post-list{grid-template-columns:minmax(0,1fr)}
  .header-inner{height:56px;gap:10px}
  .nav{gap:0}
  .nav a{padding:7px 9px;font-size:13.5px}
  .nav a:nth-child(n+4){display:none}
  .brand-text{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .hero{padding:24px 22px;border-radius:16px}
  .post-header,.prose,.post-actions,.comments{padding-left:20px;padding-right:20px}
  .post-cover{margin-left:20px;margin-right:20px}
  .post-tags{padding-left:20px;padding-right:20px}
  .prose{font-size:16px}
  .prose h2{font-size:20.5px}
  .field-row{grid-template-columns:1fr}
  .post-list.compact{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:480px){
  .wrap{padding:0 16px}
  .post-title{font-size:22px}
  .prose{padding-left:16px;padding-right:16px;font-size:15.6px}
  .post-header{padding-left:16px;padding-right:16px}
  .code-block pre{font-size:12.6px;padding:14px}
}

/* 标签云折叠 */
.tag-cloud{max-height:none}
.tag-cloud.collapsed .tag-extra{display:none}
.tag-more{
  display:inline-flex;align-items:center;gap:4px;margin-top:9px;padding:0;border:0;background:none;
  color:var(--key);font-size:12.5px;font-weight:650;cursor:pointer;font-family:inherit;
}
.tag-more:hover{text-decoration:underline}

/* 导航里的登录/后台入口 */
.nav-admin-link{
  padding:7px 12px;border-radius:8px;color:var(--text-2);font-size:14.5px;font-weight:550;
  border:1px solid var(--border);
}
.nav-admin-link:hover{border-color:var(--key);color:var(--key);opacity:1}
.nav .btn.nav-admin{height:auto;padding:7px 14px;font-size:14px}

/* 页脚管理入口 */
.foot-sep{margin:0 6px;color:var(--border-2)}
.foot-admin{color:var(--muted);font-size:12.5px}
.foot-admin:hover{color:var(--key)}
@media (max-width:720px){
  .nav-admin-link{padding:7px 9px;font-size:13.5px}
}


/* ==========================================================================
   宽屏适配（用户反馈：宽屏留白过多）
   ========================================================================== */
@media (min-width:1500px){
  .hero{padding:44px 48px;margin-bottom:34px}
  .hero h1{font-size:40px}
  .hero p{font-size:17.5px;max-width:70ch}
  .post-card{border-radius:16px}
  .card-title{font-size:19px}
  .card-excerpt{font-size:15px}
  .prose{font-size:17.5px}
  .prose h1{font-size:32px}
  .prose h2{font-size:26px}
  .prose h3{font-size:21px}
  .post-header{padding:34px clamp(22px,3vw,54px) 0}
  .post-title{font-size:38px}
  .post-cover{margin-left:clamp(22px,3vw,54px);margin-right:clamp(22px,3vw,54px);max-height:520px}
  .post-cover img{max-height:520px}
  .post-actions{padding-left:clamp(22px,3vw,54px);padding-right:clamp(22px,3vw,54px)}
  .post-tags{padding-left:clamp(22px,3vw,54px);padding-right:clamp(22px,3vw,54px)}
  .comments{padding:28px clamp(22px,3vw,54px)}
}

@media (min-width:1900px){
  :root{--maxw:1880px}
  .layout{grid-template-columns:minmax(0,1fr) 380px}
  .post-list{grid-template-columns:repeat(auto-fill,minmax(370px,1fr))}
  .wrap{padding:0 clamp(24px,2.2vw,64px)}
}
/* 超宽屏封面卡片可以更高，避免内容稀疏 */
@media (min-width:1900px){
  .post-card .thumb{height:230px}
}
/* 2K/4K 屏：几乎铺满，靠栅格自动增列承载，正文仍限宽保证易读 */
@media (min-width:2200px){
  :root{--maxw:none}
  .wrap{padding:0 clamp(28px,2vw,72px)}
  .post-list{grid-template-columns:repeat(auto-fill,minmax(390px,1fr))}
  .layout{grid-template-columns:minmax(0,1fr) 400px}
}

/* 文章页图片在宽屏下也铺开 */
@media (min-width:1200px){
  .prose img{max-width:100%}
  .prose .code-block pre{font-size:14px}
  .prose table{font-size:15px}
}

/* 后台宽屏：主区不再无限拉伸 */
.admin-main{max-width:none}
@media (min-width:1700px){
  .admin-main{padding:26px 48px 80px}
  .stat-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
}


/* 宽屏文章页：压缩侧栏，把空间让给正文 */
@media (min-width:1600px){
  .layout{grid-template-columns:minmax(0,1fr) 300px}
  .prose{font-size:18px}
  .prose p{margin-bottom:1.35em}
}
@media (min-width:2000px){
  .layout{grid-template-columns:minmax(0,1fr) 320px}
  .prose{font-size:18.5px;padding-left:clamp(30px,4vw,72px);padding-right:clamp(30px,4vw,72px)}
  .post-header{padding-left:clamp(30px,4vw,72px);padding-right:clamp(30px,4vw,72px)}
  .post-title{font-size:42px}
}

/* 正文铺满可用宽度（文章页右侧有侧栏，正文区本身就是可读范围） */
.prose > *{max-width:100%}

/* ==================== 关于页 ==================== */
.about-hero{
  display:flex;align-items:center;gap:clamp(18px,2.4vw,32px);
  padding:clamp(26px,3.4vw,44px) clamp(24px,3vw,44px);
  margin:26px 0 22px;border-radius:var(--radius);
  background:linear-gradient(135deg,var(--key-soft) 0%,var(--surface) 55%,var(--key-soft) 100%);
  border:1px solid var(--border);
}
.about-hero-avatar{
  width:clamp(76px,8vw,104px);height:clamp(76px,8vw,104px);
  border-radius:50%;object-fit:cover;flex:0 0 auto;
  border:4px solid var(--surface);box-shadow:0 6px 20px var(--key-soft);
  background:var(--key-soft);
}
.about-hero-text{min-width:0}
.about-hero-text h1{
  font-size:clamp(26px,3vw,36px);margin:0 0 8px;letter-spacing:-.5px;
}
.about-hero-bio{margin:0 0 14px;color:var(--text-2);font-size:15.5px;line-height:1.65;max-width:62ch}
.about-hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--muted)}
.about-hero-meta b{color:var(--text);font-size:15px;font-weight:700}
.about-hero-meta a{color:var(--key);font-weight:600}

.about-layout{align-items:start;grid-template-columns:1fr}
.about-card{
  width:100%;
  padding:clamp(26px,3vw,52px) clamp(24px,3.4vw,64px);
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
}
/* 正文居中成一栏，而不是贴着左边留一大片空白 */
.about-card .prose{max-width:none;margin:0}
/* 占满内容区（关于页没有侧栏，就是要铺满） */
.about-card .prose > *{max-width:100%}

/* 首屏图片（通常是头像）居中的圆角方形，尺寸收敛 */
.about-card .prose > p:first-child{margin:0 0 26px}
.about-card .prose > p:first-child img{
  display:block;margin:0 auto;width:clamp(120px,14vw,168px);height:auto;
  border-radius:24px;box-shadow:0 8px 28px rgba(13,148,136,.16);
}
/* 正文里的独立图片：居中、圆角，不撑满 */
.about-card .prose > p > img{max-width:100%;height:auto;border-radius:12px}
/* 徽章组（shields.io）横向排一行 */
.about-card .prose > p:has(> a > img[src*="shields.io"]){display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:16px 0 6px;max-width:none}
.about-card .prose > p:has(> a > img[src*="shields.io"]) img{box-shadow:none;margin:0;border-radius:4px}
/* 小节标题加一条淡淡的底边，读起来有分节感 */
.about-card .prose > h2{
  margin-top:44px;padding-bottom:12px;border-bottom:1px solid var(--border);
  font-size:clamp(20px,2vw,26px);letter-spacing:-.3px;
}
.about-card .prose > h3{margin-top:30px;font-size:18.5px}
.about-card .prose > p:has(img[src*="capsule-render"]){max-width:none;margin:30px 0}
.about-card .prose > p img[src*="capsule-render"]{width:100%;height:auto;max-height:96px;object-fit:cover;border-radius:10px;display:block}
/* 引用块做成卡片感 */
.about-card .prose blockquote{
  border-left:3px solid var(--key);background:var(--key-soft);
  border-radius:0 12px 12px 0;padding:16px 20px;margin:20px 0;
}
.about-card .prose blockquote p{margin:.35em 0;max-width:none}

@media (max-width:760px){
  .about-hero{flex-direction:column;align-items:flex-start;text-align:left}
  .about-card{padding:22px 20px}
}

/* 页头品牌：自定义 logo 或头像 */
.brand .brand-logo{width:34px;height:34px;border-radius:9px;object-fit:cover}
.brand .brand-avatar{width:34px;height:34px;border-radius:50%;object-fit:cover;
  box-shadow:0 0 0 2px var(--surface),0 0 0 3.5px var(--key-soft)}

/* ==================== 回到顶部 ==================== */
.to-top{
  position:fixed;right:clamp(16px,2.2vw,32px);bottom:clamp(16px,2.2vw,32px);
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  background:var(--surface);color:var(--text-2);cursor:pointer;
  border:1px solid var(--border);box-shadow:0 4px 16px rgba(16,24,40,.10),0 1px 3px rgba(16,24,40,.06);
  opacity:0;transform:translateY(10px) scale(.92);pointer-events:none;
  transition:opacity .22s,transform .22s,background .18s,color .18s,border-color .18s;
  z-index:60;
}
.to-top.show{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.to-top:hover{background:var(--key);color:#fff;border-color:var(--key);transform:translateY(-2px) scale(1)}
.to-top:active{transform:translateY(0) scale(.96)}
.to-top svg{width:20px;height:20px;position:relative;z-index:1}
.to-top{isolation:isolate}
/* 外圈阅读进度：用 conic-gradient 画一圈，遮掉中间圆 */
.to-top::before{
  content:"";position:absolute;inset:-3px;border-radius:50%;z-index:-1;
  background:conic-gradient(var(--key) calc(var(--p,0) * 1%), var(--border) 0);
  -webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 3px),#000 calc(100% - 3px));
  mask:radial-gradient(farthest-side,transparent calc(100% - 3px),#000 calc(100% - 3px));
  transition:background .15s;
}

@media (max-width:640px){
  .to-top{width:42px;height:42px;right:14px;bottom:14px}
}
@media print{
  .to-top{display:none}
}