@charset "UTF-8";:root{--bg:#f8fafc;--card:#ffffff;--text:#0f172a;--muted:#475569;--accent:#0ea5e9;--border:#e2e8f0;--code-bg:#f3f4f6;--code-text:#0f172a;--inline-bg:#e2e8f0;--code-border:#e2e8f0;--code-shadow:rgba(15, 23, 42, 0.06)}:root.dark{--bg:#0b1220;--card:#0f172a;--text:#e2e8f0;--muted:#94a3b8;--accent:#38bdf8;--border:#1f2937;--code-bg:#0b162a;--code-text:#dbeafe;--inline-bg:#1e293b;--code-border:#0f1a2d;--code-shadow:rgba(56, 189, 248, 0.12)}*,*::before,*::after{box-sizing:border-box}body{margin:0;font-family:inter,system-ui,-apple-system,BlinkMacSystemFont,segoe ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;transition:background .2s ease,color .2s ease;overflow-x:auto;word-break:break-word}a{color:inherit;text-decoration:none}.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}.site-header{display:flex;justify-content:space-between;align-items:center;padding:6px clamp(12px,3vw,32px);border-bottom:1px solid rgba(148,163,184,.45);background:rgba(255,255,255,.3);position:sticky;top:0;backdrop-filter:blur(8px);z-index:10;width:100%;box-sizing:border-box}.dark .site-header{background:rgba(15,23,42,.3);border-bottom-color:rgba(30,64,175,.55)}.reading-progress{position:fixed;top:0;left:0;width:100%;height:3px;background:0 0;z-index:20;pointer-events:none}.reading-progress-bar{height:100%;width:0;background:linear-gradient(90deg,#22c55e,#0ea5e9);transform-origin:left center;transition:width .08s linear}.dark .reading-progress-bar{background:#38bdf8}.back-top{position:fixed;right:16px;bottom:20px;width:32px;height:32px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-size:18px;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 8px 20px rgba(15,23,42,.25);opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .15s ease,transform .15s ease;z-index:30}.back-top.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}.ai-chat-widget{position:fixed;right:16px;bottom:72px;z-index:35}.ai-chat-toggle{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:6px 10px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-size:13px;cursor:pointer;box-shadow:0 8px 20px rgba(15,23,42,.25);transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.ai-chat-toggle:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.ai-chat-toggle-icon{font-size:15px}.ai-chat-panel{position:absolute;right:0;bottom:42px;width:320px;max-height:420px;background:var(--card);border-radius:14px;border:1px solid var(--border);box-shadow:0 20px 40px rgba(15,23,42,.35);display:flex;flex-direction:column;opacity:0;transform:translateY(6px);pointer-events:none;transition:opacity .15s ease,transform .15s ease}.ai-chat-panel.is-open{opacity:1;transform:translateY(0);pointer-events:auto}.ai-chat-header{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;border-bottom:1px solid var(--border)}.ai-chat-title-main{font-size:14px;font-weight:600}.ai-chat-title-sub{display:block;font-size:11px;color:var(--muted)}.ai-chat-close{border:none;background:0 0;cursor:pointer;font-size:16px;color:var(--muted);padding:2px 4px}.ai-chat-body{padding:8px 10px;flex:1;overflow-y:auto;background:radial-gradient(circle at top left,rgba(56,189,248,8%),transparent 55%)}.ai-chat-message{display:flex;margin-bottom:6px}.ai-chat-message-user{justify-content:flex-end}.ai-chat-bubble{max-width:86%;padding:6px 8px;border-radius:10px;font-size:13px;line-height:1.5;white-space:pre-wrap}.ai-chat-bubble p{margin:0 0 4px}.ai-chat-bubble ul{margin:0 0 4px 18px;padding-left:16px}.ai-chat-bubble pre{margin:2px 0 4px;padding:6px 8px;border-radius:8px;background:var(--code-bg);font-size:12px;font-family:jetbrains mono,fira code,Consolas,monospace;overflow-x:auto}.ai-chat-bubble code{background:var(--inline-bg);border-radius:4px;padding:1px 3px;font-family:jetbrains mono,fira code,Consolas,monospace}.ai-chat-message-user .ai-chat-bubble{background:var(--accent);color:#fff;border-bottom-right-radius:3px}.ai-chat-message-assistant .ai-chat-bubble{background:var(--inline-bg);color:var(--text);border-bottom-left-radius:3px}.ai-chat-input-bar{display:flex;align-items:flex-end;gap:6px;padding:6px 8px;border-top:1px solid var(--border);background:var(--card)}.ai-chat-input{flex:1;min-height:40px;max-height:80px;resize:none;border-radius:10px;border:1px solid var(--border);padding:4px 8px;font-size:13px;font-family:inherit;background:var(--bg);color:var(--text)}.ai-chat-input:focus{outline:none;border-color:var(--accent)}.ai-chat-send{border-radius:999px;border:1px solid var(--accent);background:var(--accent);color:#fff;padding:4px 10px;font-size:13px;cursor:pointer}.ai-chat-send:disabled{opacity:.6;cursor:default}@media(max-width:640px){.back-top{right:10px;bottom:16px}.ai-chat-widget{right:10px;bottom:64px}.ai-chat-panel{width:calc(100vw - 20px);max-width:360px}.site-header{padding:2px 6px}.brand a{font-size:16px}.tagline{display:none}.home .tagline{display:block;max-width:100%;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.site-nav a{margin-left:0;font-size:14px}.theme-toggle,.search-icon{font-size:16px}.header-actions{gap:6px}}.header-actions{display:flex;align-items:center;gap:10px}.brand a{font-weight:700;font-size:17px}.tagline{margin:4px 0 0;color:var(--muted);font-size:14px}.site-nav a{margin-left:14px;color:var(--muted);font-weight:600}.site-nav a[aria-current=page]{color:var(--accent)}.search-icon{display:inline-flex;align-items:center;justify-content:center;padding:4px 8px;border-radius:999px;border:1px solid var(--border);color:var(--muted);font-size:18px;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.search-icon:hover{border-color:var(--accent);background:rgba(56,189,248,8%);color:var(--accent);transform:translateY(-1px)}.site-main{max-width:880px;margin:0 auto;padding:32px 16px 64px;width:100%;box-sizing:border-box;overflow:hidden}.site-footer{text-align:center;padding:32px 16px 48px;color:var(--muted);font-size:14px}.hero{margin-bottom:24px}.hero .eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12px;color:var(--accent);margin:0 0 6px}.hero h1{margin:0 0 10px}.lede{color:var(--muted)}.post-list{display:grid;gap:16px;grid-template-columns:1fr;width:100%;align-items:stretch;max-width:100%;margin-top:16px}.home-featured{display:grid;grid-template-columns:1fr;gap:14px;margin-top:10px;margin-bottom:10px}@media(min-width:900px){.home-featured{grid-template-columns:repeat(2,minmax(0,1fr))}}.profile{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px 18px;margin-bottom:20px;width:100%;box-sizing:border-box;max-width:100%}.avatar{width:56px;height:56px;border-radius:50%;overflow:hidden;border:2px solid var(--border)}.avatar img{width:100%;height:100%;object-fit:cover;display:block}.name{margin:0 0 4px}.bio{margin:0;color:var(--muted)}.bio-keywords-mobile{display:none}.bio a,.content a{color:var(--accent);text-decoration:underline;font-weight:600}.bio a:hover,.content a:hover{text-decoration:none}.content a.pdf-link::after{content:"PDF";margin-left:6px;padding:1px 4px;border-radius:999px;border:1px solid var(--border);font-size:11px;color:var(--muted)}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;transition:transform .1s ease,box-shadow .1s ease,border-color .1s ease;width:100%;box-sizing:border-box;display:flex;flex-direction:column;margin:0;max-width:100%}.card-link{display:block;padding:16px 20px 18px;height:100%;width:100%;box-sizing:border-box;word-break:break-word;overflow-wrap:anywhere}.card-main{display:flex;flex-direction:column;min-width:0}.card-head{display:flex;flex-direction:column;gap:8px}.card-head-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:4px}.card-type{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;background:rgba(15,23,42,3%);color:var(--muted);font-size:11px;font-weight:600}.card-date{font-size:12px;color:var(--muted)}.card-cover{border-radius:10px;text-align:center;padding:6px 0 10px}.card-cover img{max-width:100%;max-height:90%;display:block;margin:0 auto;object-fit:cover;border-radius:10px}.card:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:0 10px 30px rgba(15,23,42,8%)}.card h2{margin:0 0 6px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;word-break:break-word}.meta{margin:0;color:var(--muted);font-size:14px}.meta .tag{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;margin-left:6px;margin-top:2px;margin-bottom:2px;border-radius:999px;background:rgba(14,165,233,.12);color:var(--accent);font-size:12px;font-weight:700;text-transform:capitalize}.meta .tag:first-of-type{margin-left:10px}.tag[data-tag-key=vln]{background:rgba(59,130,246,.12);color:#2563eb}.tag[data-tag-key=ros],.tag[data-tag-key=ros_note]{background:rgba(16,185,129,.12);color:#059669}.tag[data-tag-key=docker]{background:rgba(56,189,248,.16);color:#0284c7}.tag[data-tag-key=rl]{background:rgba(245,158,11,.14);color:#b45309}.tag[data-tag-key=llm]{background:rgba(147,51,234,.16);color:#7e22ce}.tag[data-tag-key=llm]::before{content:"🤖"}.tag[data-tag-key=obsidian]{background:rgba(148,163,184,.18);color:#475569}.tag[data-tag-key=ubuntu]{background:rgba(34,197,94,.12);color:#15803d}.tag[data-tag-key=essay],.tag[data-tag-key=other]{background:rgba(244,63,94,.1);color:#be123c}.tag[data-tag-key=navigation]{background:rgba(45,212,191,.14);color:#0f766e}.tag[data-tag-key=navigation]::before{content:"🧭"}.tag[data-tag-key=uav]{background:rgba(56,189,248,.16);color:#0369a1}.tag[data-tag-key=uav]::before{content:"🛰️"}.tag[data-tag-key=项目],.tag[data-tag-key=project]{background:rgba(250,204,21,.18);color:#a16207}.tag[data-tag-key=深蓝课程],.tag[data-tag-key=course]{background:rgba(59,130,246,.1);color:#1d4ed8}.tag[data-tag-key=nextcloud]{background:rgba(56,189,248,.14);color:#0369a1}.tag[data-tag-key=zotero]{background:rgba(248,113,113,.14);color:#b91c1c}.tag[data-tag-key=latex]{background:rgba(129,140,248,.16);color:#4338ca}.tag[data-tag-key=docker]::before{content:"🐳"}.tag[data-tag-key=ros],.tag[data-tag-key=ros_note]{background:rgba(16,185,129,.12);color:#059669}.tag[data-tag-key=ros]::before,.tag[data-tag-key=ros_note]::before{content:"🤖"}.tag[data-tag-key=habitat]{background:rgba(96,165,250,.16);color:#1d4ed8}.meta-views{margin-top:4px;font-size:13px;opacity:.9}.meta-views .icon-eye{display:inline-block;margin-right:4px;font-size:13px;vertical-align:-1px}.meta-reading{margin-top:4px;font-size:13px;color:var(--muted)}.meta-updated{margin-left:6px}.summary{margin:10px 0 0;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;word-break:break-word}.tag-filter{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 18px}.tag-pill{border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);padding:4px 10px;font-size:13px;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.tag-pill:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.tag-roadmap{margin:12px 0 20px;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--card)}.tag-roadmap-title{margin:0 0 4px;font-size:15px;font-weight:600}.tag-roadmap-subtitle{margin:0 0 8px;font-size:13px;color:var(--muted)}.tag-roadmap-list{list-style:none;padding-left:0;margin:0;border-left:1px solid var(--border)}.tag-roadmap-item{position:relative;padding:6px 0 6px 14px;font-size:14px}.tag-roadmap-item::before{content:"";position:absolute;left:-4px;top:11px;width:7px;height:7px;border-radius:999px;background:var(--accent)}.tag-roadmap-date{display:inline-block;min-width:90px;color:var(--muted);font-size:12px;margin-right:8px}.tag-roadmap-link{color:inherit}.tag-roadmap-link:hover{color:var(--accent)}.tag-pill.is-active{background:var(--accent);border-color:var(--accent);color:#fff}.tag-cloud-list{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0}.tag-cloud-item{display:inline-flex;align-items:center;gap:6px}.tag-graph{margin-top:28px;padding:16px 18px 20px;border-radius:14px;border:1px solid var(--border);background:var(--card)}.tag-graph h2{margin:0 0 6px;font-size:18px}.tag-graph-hint{margin:0 0 10px;font-size:13px;color:var(--muted)}.tag-graph-svg{width:100%;max-width:480px;display:block;margin:0 auto}.tag-graph-circle{stroke-width:1.2}.tag-graph-label{font-size:11px;fill:var(--text)}.tag-knowledge-tree{margin:16px 0 22px;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--card)}.tag-knowledge-tree h2{margin:0 0 6px;font-size:16px}.tag-knowledge-hint{margin:0 0 8px;font-size:13px;color:var(--muted)}.tag-knowledge-list{list-style:none;padding-left:0;margin:0}.tag-knowledge-node{padding:4px 0;font-size:14px}.tag-knowledge-label{font-weight:600;margin-right:6px;position:relative;padding-left:18px}.tag-knowledge-tags{color:var(--muted);font-size:13px}.tag-knowledge-label::before{content:"•";position:absolute;left:4px;top:50%;transform:translateY(-50%);font-size:10px;color:var(--accent)}.tag-count{min-width:20px;height:20px;border-radius:999px;background:var(--inline-bg);border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;font-size:12px}.archive-list{margin-top:16px}.archive-stats{margin-top:12px;margin-bottom:12px;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--card)}.archive-stats-title{margin:0 0 4px;font-size:16px}.archive-stats-subtitle{margin:0 0 10px;font-size:13px;color:var(--muted)}.archive-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px}.archive-stats-card{padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:var(--card)}.archive-stats-label{margin:0 0 4px;font-size:13px;color:var(--muted)}.archive-stats-value{margin:0;font-size:18px;font-weight:600}.archive-stats-tags{margin:2px 0 0;font-size:13px;color:var(--muted)}.archive-stats-tag{display:inline-block;padding:2px 8px;margin:2px 4px 0 0;border-radius:999px;border:1px solid var(--border)}.archive-stats-extra{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-top:12px}.archive-top-list{list-style:none;padding-left:0;margin:0;font-size:14px}.archive-top-item{display:flex;justify-content:space-between;align-items:baseline;padding:3px 0}.archive-top-item a{color:var(--accent)}.archive-top-item a:hover{text-decoration:underline}.archive-top-count{font-size:12px;color:var(--muted);margin-left:8px}.archive-top-empty{font-size:13px;color:var(--muted)}.archive-year-chart{margin-top:10px}.archive-year-chart-list{list-style:none;padding-left:0;margin:0}.archive-year-chart-item{display:flex;align-items:center;gap:8px;padding:2px 0;font-size:13px}.archive-year-chart-label{min-width:56px;color:var(--muted)}.archive-year-chart-bar{position:relative;flex:1;height:16px;border-radius:999px;background:rgba(148,163,184,.28);overflow:hidden}.archive-year-chart-fill{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:rgba(59,130,246,.85)}.archive-year-chart-count{position:absolute;right:6px;top:50%;transform:translateY(-50%);font-size:11px;color:#e5f0ff}.archive-year-chart-hint{margin:4px 0 0;font-size:12px;color:var(--muted)}.archive-year{margin-bottom:20px}.archive-year-toggle{width:100%;padding:6px 10px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-size:14px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .1s ease}.archive-year-toggle:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.archive-year.is-open .archive-year-toggle{border-color:var(--accent);background:rgba(14,165,233,6%);color:var(--accent)}.archive-year-title{margin:0;font-size:15px;font-weight:600}.archive-year-count{font-size:12px;color:var(--muted)}.archive-year-body{margin-top:6px}.archive-year.is-open .archive-year-body{display:block}.archive-year:not(.is-open) .archive-year-body{display:none}.archive-month{margin-top:4px}.archive-year-title{margin:0 0 0;font-size:18px}.archive-items{list-style:none;padding:0;margin:0}.archive-item{display:flex;align-items:baseline;gap:10px;padding:4px 0}.archive-date{font-family:jetbrains mono,fira code,Consolas,monospace;font-size:13px;color:var(--muted);min-width:44px}.archive-item a{color:var(--text)}.archive-item a:hover{color:var(--accent)}.not-found-actions{margin-top:16px;display:flex;flex-wrap:wrap;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:6px 14px;border-radius:999px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-size:14px;text-decoration:none;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.btn.ghost{background:0 0;color:var(--accent)}.btn:hover{transform:translateY(-1px)}.not-found-suggestions{margin-top:24px}.not-found-suggestions h2{margin:0 0 10px;font-size:18px}.not-found-list{list-style:none;padding-left:0;margin:0}.not-found-item{display:flex;justify-content:space-between;align-items:baseline;padding:4px 0;font-size:14px}.not-found-item a{color:var(--accent)}.not-found-item a:hover{text-decoration:underline}.not-found-date{color:var(--muted);font-size:12px;margin-left:8px}.home-top-panel{margin:18px 0 6px;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:var(--card);display:grid;grid-template-columns:1fr;gap:8px}.home-view-count,.academic-view-count{display:none}@media(min-width:880px){.home-top-panel{grid-template-columns:repeat(2,minmax(0,1fr))}}.home-top-block{min-width:0}.home-top-footer{grid-column:1/-1;display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin:4px 0 0;font-size:12px;color:var(--muted)}.home-top-hint,.home-top-total{margin:0}.home-top-title{margin:0 0 2px;font-size:14px}.home-top-list{list-style:none;padding-left:0;margin:0;font-size:13px}.home-top-item{display:flex;justify-content:space-between;align-items:baseline;padding:1px 0}.home-top-item a{color:var(--accent);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;word-break:break-word}.home-top-item a:hover{text-decoration:underline}.home-top-count{font-size:11px;color:var(--muted);margin-left:8px}.home-top-empty{font-size:13px;color:var(--muted)}.home-topics{margin:14px 0 0}.home-topics-title{margin:0 0 8px;font-size:16px}.home-topics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}.home-topic-card{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:var(--card);transition:border-color .15s ease,transform .1s ease,box-shadow .15s ease}.home-topic-card:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:0 10px 26px rgba(15,23,42,8%)}.home-topic-icon{width:32px;height:32px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;background:rgba(14,165,233,8%)}.home-topic-body h3{margin:0 0 4px;font-size:14px}.home-topic-body p{margin:0;font-size:13px;color:var(--muted)}.post{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px 24px;box-shadow:0 16px 38px rgba(15,23,42,6%)}.reading-mode .site-header,.reading-mode .site-footer,.reading-mode .ai-chat-widget,.reading-mode .back-top,.reading-mode .reading-progress{display:none!important}.reading-mode .toc{display:none}.reading-mode .site-main{max-width:960px}.reading-mode .post{box-shadow:none;border-radius:0;border:none;padding-left:0;padding-right:0}.reading-mode .post .content{font-size:16px;line-height:1.8}.post-header h1{margin:6px 0 12px}.post-header .meta,.post-header .meta-views{display:flex;flex-wrap:wrap;gap:6px 10px}.post-reading-mode-toggle{margin-top:6px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);padding:4px 10px;font-size:12px;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.post-reading-mode-toggle:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.reading-mode .post-reading-mode-toggle{background:rgba(34,197,94,8%);border-color:#22c55e;color:#16a34a}.reading-mode-fab{position:fixed;right:16px;bottom:120px;width:34px;height:34px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-size:13px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 8px 20px rgba(15,23,42,.25);z-index:32;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.reading-mode-fab:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.reading-mode .reading-mode-fab{background:rgba(34,197,94,.1);border-color:#22c55e;color:#16a34a}.post .cover img{width:100%;border-radius:10px;border:1px solid var(--border)}.page-academic .post{border-radius:18px}.page-academic .post .content h2,.page-academic .post .content h3{position:relative;padding-left:14px}.page-academic .post .content h2::before,.page-academic .post .content h3::before{content:"";position:absolute;left:0;top:.45em;width:8px;height:8px;border-radius:999px;background:var(--accent)}.page-academic .post .content ul{margin-left:0;padding-left:18px}.post-body{margin-top:8px}.post-footer{margin-top:24px}.post-feedback{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:14px;align-items:center;justify-content:center}.post-like-btn,.post-donate-btn{border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-size:13px;padding:6px 12px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.post-like-btn:hover,.post-donate-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.post-like-btn.is-liked{background:rgba(34,197,94,8%);border-color:#22c55e;color:#16a34a}.post-donate-popup{position:relative;display:none;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:var(--card);box-shadow:0 16px 40px rgba(15,23,42,.3);margin-top:4px}.post-donate-popup.is-open{display:inline-block}.post-donate-title{margin:0 0 6px;font-size:13px;color:var(--muted)}.post-donate-img{max-width:200px;height:auto;display:block}.post-nav{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--border);padding-top:14px;font-size:14px}.post-nav-link{display:inline-flex;max-width:48%;color:var(--muted);text-decoration:none}.post-nav-link:hover{color:var(--accent)}.post-share{margin-top:10px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);padding:6px 10px;font-size:13px;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.post-share:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.post-ppt{margin-top:10px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);padding:6px 10px;font-size:13px;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.post-ppt:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.related-block{margin-top:18px}.related-title{margin:0 0 6px;font-size:14px;font-weight:600;color:var(--muted)}.related-list{list-style:none;margin:0;padding:0}.related-item{display:flex;justify-content:space-between;gap:10px;font-size:14px;padding:2px 0}.related-item a{color:var(--text)}.related-item a:hover{color:var(--accent)}.related-date{font-family:jetbrains mono,fira code,Consolas,monospace;font-size:12px;color:var(--muted)}.search-box{margin:8px 0 16px}.search-input{width:100%;max-width:420px;padding:8px 12px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:14px;box-sizing:border-box}.search-input:focus{outline:none;border-color:var(--accent)}.search-results{margin-top:8px;transition:opacity .15s ease;opacity:1}.search-hint{margin:0;font-size:14px;color:var(--muted)}.search-result-list{display:grid;gap:12px}.search-filters{display:flex;flex-wrap:wrap;gap:12px 16px;align-items:flex-end;margin-bottom:8px}.search-filter-group{display:flex;flex-direction:column;gap:4px}.search-filter-label{font-size:13px;color:var(--muted)}.search-filter-select,.search-filter-date{font-size:13px;padding:6px 10px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--text)}.search-filter-select:focus,.search-filter-date:focus{outline:none;border-color:var(--accent)}.search-filter-dates{display:flex;align-items:center;gap:6px}.search-filter-sep{font-size:13px;color:var(--muted)}.content img{max-width:100%}.content blockquote{margin:10px 0;padding:10px 12px;border-left:3px solid var(--accent);border-radius:8px;background:var(--card);color:var(--muted)}.content blockquote p{margin:.25em 0}.auto-img-caption{margin-top:4px;font-size:12px;color:var(--muted);opacity:.9}.katex-display{overflow-x:auto;-webkit-overflow-scrolling:touch;position:relative;padding-right:28px}.katex-display::-webkit-scrollbar{height:4px;width:4px}.katex-display::-webkit-scrollbar-thumb{background:rgba(148,163,184,.7);border-radius:999px}.dark .katex-display::-webkit-scrollbar-thumb{background:rgba(148,163,184,.6)}@media(max-width:640px){.katex,.katex-display{font-size:.96em}}.toc{margin:4px 0 18px;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--card);font-size:14px}.toc-title{margin:0 0 8px;font-weight:600;color:var(--muted)}.toc ul{list-style:none;padding-left:0;margin:0}.toc li{margin:4px 0}.toc a{color:var(--muted)}.math-copy-btn{position:absolute;top:4px;right:4px;border:none;border-radius:999px;padding:2px 6px;font-size:11px;background:var(--card);color:var(--muted);border:1px solid var(--border);cursor:pointer}.math-copy-btn:hover{color:var(--accent);border-color:var(--accent)}.bibref{position:relative;display:inline-block}.bibref-link{border-bottom:1px dashed rgba(148,163,184,.7)}.bibref-popover{position:absolute;left:0;top:120%;min-width:260px;max-width:420px;width:90vw;padding:8px 10px;border-radius:10px;border:1px solid var(--border);background:var(--card);box-shadow:0 16px 40px rgba(15,23,42,.35);font-size:12px;color:var(--text);opacity:0;transform:translateY(4px);pointer-events:none;transition:opacity .12s ease,transform .12s ease;z-index:40}.bibref:hover .bibref-popover{opacity:1;transform:translateY(0);pointer-events:auto}.bibref-popover-title{font-weight:600;font-size:12px;color:var(--muted);display:block;margin-bottom:4px}.bibref-meta{display:block;margin-bottom:4px;font-size:11px;color:var(--muted)}.bibref-meta-venue{font-weight:600}.bibref-meta-year{margin-left:6px}.bibref-code{margin:0;padding:6px 8px;border-radius:6px;background:var(--code-bg);font-family:jetbrains mono,fira code,Consolas,monospace;font-size:11px;overflow-x:auto}.toc a:hover{color:var(--accent)}.toc ul ul{padding-left:14px}.toc a.is-active{color:var(--accent);font-weight:600}.toc-toggle{border:none;background:0 0;color:var(--muted);font-size:12px;cursor:pointer;padding:0 4px 0 0}.toc li.has-children>ul{margin-left:18px}.heading-anchor{opacity:0;margin-left:6px;font-size:.85em;color:var(--muted);text-decoration:none;cursor:pointer;transition:opacity .12s ease,color .12s ease}.heading-anchor:hover{color:var(--accent)}.content h2:hover .heading-anchor,.content h3:hover .heading-anchor,.content h4:hover .heading-anchor{opacity:1}@media(min-width:1360px){.post .toc{position:fixed;top:120px;right:clamp(12px,4vw,32px);max-height:calc(100vh - 120px);overflow:auto;width:230px;margin:0;z-index:15}}.content .code-block pre{background:var(--code-bg);color:var(--code-text);padding:32px 14px 12px;border-radius:8px;overflow-x:auto;border:1px solid var(--code-border);box-shadow:none;font-family:jetbrains mono,fira code,Consolas,monospace;font-size:.9em;line-height:1.5;white-space:pre;word-break:normal}.chroma{overflow-x:auto}.chroma,.chroma pre,.chroma code{white-space:pre;word-break:normal}.chroma table{border-spacing:0}.chroma td{padding:0;vertical-align:top}.chroma .lnt{display:block;min-width:2.5em;padding:0 8px 0 0;text-align:right;color:var(--muted);font-size:.9em;opacity:.9;user-select:none;pointer-events:none}.lntd .code-block{margin:0}.lntd .code-block pre{background:0 0;border:none;padding:0;box-shadow:none}.lntd .copy-btn{display:none}.chroma .k,.chroma .kd,.chroma .kn,.chroma .kp,.chroma .kr,.chroma .kt{color:#ec4899;font-weight:600}.chroma .n,.chroma .nx,.chroma .nn,.chroma .p,.chroma .o,.chroma .ow{color:var(--code-text)}.chroma .s,.chroma .sa,.chroma .sb,.chroma .sc,.chroma .sd,.chroma .s2,.chroma .se,.chroma .sh,.chroma .si,.chroma .sr,.chroma .ss{color:#10b981}.chroma .mi,.chroma .mf,.chroma .mh,.chroma .il{color:#f59e0b}.chroma .c,.chroma .c1,.chroma .cm,.chroma .cs,.chroma .ch{color:#6b7280;font-style:italic}.chroma .na,.chroma .nb,.chroma .bp,.chroma .vc,.chroma .vg,.chroma .vi,.chroma .nv{color:#38bdf8}.chroma .nf,.chroma .fm{color:#6366f1}.chroma .nt,.chroma .nc{color:#f97316}.dark .content .code-block pre{background:#020617;border-color:#1f2937}.dark .chroma .k,.dark .chroma .kd,.dark .chroma .kn,.dark .chroma .kp,.dark .chroma .kr,.dark .chroma .kt{color:#f97316}.dark .chroma .s,.dark .chroma .sa,.dark .chroma .sb,.dark .chroma .sc,.dark .chroma .sd,.dark .chroma .s2,.dark .chroma .se,.dark .chroma .sh,.dark .chroma .si,.dark .chroma .sr,.dark .chroma .ss{color:#22c55e}.dark .chroma .mi,.dark .chroma .mf,.dark .chroma .mh,.dark .chroma .il{color:#eab308}.dark .chroma .c,.dark .chroma .c1,.dark .chroma .cm,.dark .chroma .cs,.dark .chroma .ch{color:#9ca3af}.dark .chroma .na,.dark .chroma .nb,.dark .chroma .bp,.dark .chroma .vc,.dark .chroma .vg,.dark .chroma .vi,.dark .chroma .nv{color:#38bdf8}.dark .chroma .nf,.dark .chroma .fm{color:#a855f7}.dark .chroma .nt,.dark .chroma .nc{color:#f97316}.lightbox-overlay{position:fixed;inset:0;background:rgba(15,23,42,.75);display:flex;align-items:center;justify-content:center;z-index:40}.lightbox-overlay img{max-width:90vw;max-height:90vh;border-radius:12px;box-shadow:0 25px 60px rgba(0,0,0,.5)}.lightbox-overlay::after{content:"点击空白处关闭";position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:#e5e7eb;font-size:13px}.ppt-overlay{position:fixed;inset:0;background:rgba(248,250,252,.96);color:var(--text);z-index:50;display:flex;flex-direction:column}.ppt-header{padding:12px 20px;font-size:13px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(148,163,184,.3)}.ppt-body{flex:auto;display:flex;align-items:center;justify-content:center;padding:24px 16px}.ppt-slide{max-width:960px;width:100%;max-height:100%;overflow:auto;background:var(--card);border-radius:18px;border:1px solid var(--border);padding:24px 28px;box-shadow:0 30px 80px rgba(0,0,0,.6);display:none}.ppt-slide.is-active{display:block}.ppt-slide h2,.ppt-slide h3{margin-top:0;margin-bottom:12px}.ppt-footer{padding:8px 16px 14px;font-size:12px;color:var(--muted);display:flex;justify-content:space-between;align-items:center}.ppt-controls{display:flex;gap:6px}.ppt-btn{border-radius:999px;border:1px solid var(--border);background:0 0;color:var(--muted);padding:4px 10px;font-size:12px;cursor:pointer}.ppt-btn:hover{border-color:#38bdf8;color:#38bdf8}.dark .ppt-overlay{background:rgba(15,23,42,.94);color:#e5e7eb}.dark .ppt-slide{background:rgba(15,23,42,.96);border-color:rgba(148,163,184,.4)}.dark .ppt-footer{color:#9ca3af}.dark .ppt-btn{border-color:rgba(148,163,184,.6);color:#e5e7eb}@media(max-width:640px){.ppt-overlay{align-items:stretch;overflow-y:auto}.ppt-header{padding:8px 12px;font-size:12px}.ppt-body{padding:10px 6px;align-items:stretch;justify-content:flex-start}.ppt-slide{padding:16px 14px;border-radius:12px;max-width:100%;max-height:none;height:auto;overflow:visible}.ppt-footer{padding:6px 10px 10px;font-size:11px;flex-direction:column;align-items:flex-start;gap:4px}.ppt-controls{width:100%;justify-content:flex-end}.ppt-btn{padding:4px 8px;font-size:11px}}.code-block{position:relative;margin:12px 0}.code-lang{position:absolute;top:8px;left:12px;padding:2px 8px;border-radius:999px;background:rgba(15,23,42,6%);color:var(--muted);font-size:11px;font-family:jetbrains mono,fira code,Consolas,monospace}.copy-btn{position:absolute;top:8px;right:8px;border:none;background:rgba(15,23,42,4%);color:var(--text);border-radius:8px;padding:3px 8px;font-size:11px;cursor:pointer;opacity:0;transition:opacity .15s ease,transform .15s ease,background .15s ease,color .15s ease}.copy-btn:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}.code-block:hover .copy-btn{opacity:1}.code-block.collapsed pre{max-height:260px;overflow:hidden}.code-toggle{margin-top:6px;font-size:12px;color:var(--muted);background:rgba(15,23,42,3%);border-radius:999px;border:1px solid var(--border);padding:4px 10px;cursor:pointer;font-family:jetbrains mono,fira code,Consolas,monospace;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .1s ease}.code-toggle:hover{color:var(--accent);border-color:var(--accent);background:rgba(14,165,233,6%);transform:translateY(-1px)}.content code{background:var(--inline-bg);padding:1px 4px;border-radius:4px;font-family:jetbrains mono,fira code,Consolas,monospace;border:none;word-break:break-word}.content .code-block pre::-webkit-scrollbar{height:4px;width:4px}.content .code-block pre::-webkit-scrollbar-thumb{background:rgba(148,163,184,.7);border-radius:999px}.dark .content .code-block pre::-webkit-scrollbar-thumb{background:rgba(148,163,184,.6)}.pagination{margin-top:24px;display:flex;gap:8px;align-items:center;justify-content:center}.pagination a,.pagination span{min-width:30px;height:30px;padding:0 10px;border-radius:999px;border:none;background:0 0;display:inline-flex;align-items:center;justify-content:center;color:var(--muted);font-weight:600;line-height:1;transition:background .15s ease,color .15s ease,box-shadow .15s ease}.pagination .active{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(0,0,0,8%)}.pagination a:hover{background:var(--inline-bg);color:var(--text)}@media(max-width:640px){.site-header{flex-direction:column;align-items:flex-start;gap:6px;padding:8px 12px}.site-nav a{margin-left:0;margin-right:12px}.profile{grid-template-columns:1fr}.card-link{padding:14px 16px}.profile{padding:14px 16px}.site-main{padding:20px 12px 40px}.profile,.card{width:100%;margin:0}iframe{height:315px!important}.tag-filter{margin-top:20px}.site-nav{display:flex;flex-wrap:wrap;gap:10px}.site-nav a{margin-left:0}.back-btn{padding:4px 8px;font-size:16px}.back-btn .back-label{display:none}.back-btn span[aria-hidden=true]{font-size:18px}.content .code-block pre{padding:34px 12px 10px;border-radius:8px;font-size:.84em;line-height:1.35;max-width:100%;box-sizing:border-box;overflow:auto}.content code{font-size:.86em}}.theme-toggle{border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:999px;padding:8px 10px;font-size:18px;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .1s ease}.theme-toggle:hover{transform:translateY(-1px);border-color:var(--accent)}.no-js .theme-toggle{display:none}.back-btn{border:1px solid var(--border);background:0 0;color:var(--muted);border-radius:999px;padding:6px 10px;font-size:13px;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .1s ease}.back-btn:hover{background:var(--inline-bg);border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.back-btn .back-label{margin-left:4px}@media print{body{background:#fff!important;color:#000!important}.site-header,.site-footer,.back-top,.reading-progress{display:none!important}.site-main{max-width:none;margin:0;padding:0 12px}a{color:#000;text-decoration:underline}.post,.card{box-shadow:none!important;border-color:#e5e7eb}.code-block.collapsed pre{max-height:none!important;overflow:visible!important}.code-toggle{display:none!important}}