/*
Theme Name: MKF Engineering Notes
Theme URI: https://blog.52mkf.com
Description: 极简技术杂志与工程文档风格的 Typecho 独立主题
Version: 1.0.0
Author: WChan
*/
:root{--bg:#f7f8fa;--surface:#fff;--soft:#f0f4f8;--text:#20242a;--muted:#667085;--line:#dfe5ec;--blue:#1769aa;--blue-strong:#0f568f;--cyan:#0b8f8a;--header:rgba(255,255,255,.88);--code:#161b22;--code-text:#dbe6f3;--shadow:0 16px 42px rgba(30,48,70,.08);--radius:14px;color-scheme:light}
html[data-theme=dark]{--bg:#0d1117;--surface:#131a23;--soft:#101720;--text:#e6edf3;--muted:#97a4b2;--line:#293442;--blue:#58a6e7;--blue-strong:#79b8ef;--cyan:#40c9c1;--header:rgba(13,17,23,.9);--shadow:0 18px 48px rgba(0,0,0,.28);color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.72 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--blue);text-decoration:none}a:hover{color:var(--blue-strong)}button,input,textarea{font:inherit}.shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}.site-main{min-height:70vh}
.site-header{position:sticky;z-index:50;top:0;border-bottom:1px solid var(--line);background:var(--header);backdrop-filter:blur(18px)}.header-inner{width:min(1240px,calc(100% - 32px));height:68px;margin:auto;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;color:var(--text);white-space:nowrap}.brand:hover{color:var(--text)}.brand-mark{display:grid;width:36px;height:36px;place-items:center;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;font:800 13px/1 ui-monospace,monospace;box-shadow:0 5px 18px rgba(23,105,170,.24)}.brand strong{display:block;font-size:17px;line-height:1.05;letter-spacing:.13em}.brand small{display:block;margin-top:3px;color:var(--muted);font:9px/1.1 ui-monospace,monospace;letter-spacing:.09em}.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}.main-nav a{padding:8px 11px;border-radius:8px;color:var(--muted);font-size:13px;font-weight:600}.main-nav a:hover{background:var(--soft);color:var(--text)}.theme-toggle,.nav-toggle{border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--text);cursor:pointer}.theme-toggle{width:38px;height:38px;font-size:18px}.nav-toggle{display:none;padding:7px 11px;font-size:12px}
.home-hero{display:grid;grid-template-columns:1.3fr .7fr;gap:64px;align-items:center;padding-block:92px 78px}.eyebrow{display:block;color:var(--blue);font:700 11px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.14em}.hero-copy h1{max-width:740px;margin:15px 0 22px;font-size:clamp(38px,6vw,72px);line-height:1.08;letter-spacing:-.055em}.hero-copy>p{max-width:690px;margin:0;color:var(--muted);font-size:17px;line-height:1.9}.hero-actions{display:flex;gap:10px;margin-top:32px}.button{display:inline-flex;align-items:center;justify-content:center;padding:10px 17px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--text);font-weight:650;cursor:pointer}.button:hover{border-color:var(--blue);color:var(--blue)}.button.primary{border-color:var(--blue);background:var(--blue);color:#fff}.button.primary:hover{background:var(--blue-strong);color:#fff}.hero-console{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:var(--code);box-shadow:var(--shadow);color:var(--code-text);transform:rotate(1.2deg)}.hero-console>div{display:flex;align-items:center;gap:6px;padding:11px 14px;border-bottom:1px solid #2d3743;background:#10151c}.hero-console i{width:8px;height:8px;border-radius:50%;background:#ff6b6b}.hero-console i:nth-child(2){background:#f4bf4f}.hero-console i:nth-child(3){background:#55c46a}.hero-console>div span{margin-left:7px;color:#8996a4;font:10px ui-monospace,monospace}.hero-console pre{margin:0;padding:22px 24px;font:13px/2 ui-monospace,SFMono-Regular,Menlo,monospace;white-space:pre-wrap}.hero-console b{color:#58a6e7}.hero-console pre span{color:#aebdca}.hero-console .ok{color:#56d364}
.topics,.latest{padding-block:62px}.topics{border-top:1px solid var(--line)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}.section-head h2{margin:9px 0 0;font-size:30px;letter-spacing:-.035em}.section-head>p{margin:0;color:var(--muted)}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.topic-card{position:relative;min-height:260px;padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);color:var(--text);transition:transform .2s,border-color .2s}.topic-card:hover{transform:translateY(-4px);border-color:var(--blue);color:var(--text)}.topic-card:before{content:"";position:absolute;inset:0 0 auto;height:3px;border-radius:var(--radius) var(--radius) 0 0;background:var(--blue)}.topic-card.vps:before{background:var(--cyan)}.topic-card.linux:before{background:#7a5af8}.topic-card>span{color:var(--muted);font:700 10px ui-monospace,monospace;letter-spacing:.13em}.topic-card h3{margin:43px 0 12px;font-size:22px;letter-spacing:-.025em}.topic-card p{color:var(--muted)}.topic-card b{position:absolute;bottom:25px;color:var(--blue);font-size:13px}
.latest{padding-bottom:100px}.post-list{border-top:1px solid var(--line)}.post-row{display:grid;grid-template-columns:130px 1fr 42px;gap:28px;align-items:start;padding:31px 4px;border-bottom:1px solid var(--line)}.post-date time{display:block;color:var(--text);font:650 13px ui-monospace,monospace}.post-date span{color:var(--muted);font:9px ui-monospace,monospace;letter-spacing:.15em}.post-kicker,.post-kicker a{color:var(--blue);font:700 11px ui-monospace,monospace;letter-spacing:.08em}.post-summary h2,.post-summary h3{margin:8px 0 10px;font-size:22px;line-height:1.35;letter-spacing:-.025em}.post-summary h2 a,.post-summary h3 a{color:var(--text)}.post-summary h2 a:hover,.post-summary h3 a:hover{color:var(--blue)}.post-summary>p{max-width:790px;margin:0;color:var(--muted)}.post-row-meta{display:flex;gap:16px;margin-top:12px;color:var(--muted);font-size:11px}.row-arrow{display:grid;width:38px;height:38px;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--muted)}.post-row:hover .row-arrow{border-color:var(--blue);color:var(--blue)}.pagination{display:flex;justify-content:center;gap:7px;margin-top:35px}.pagination a,.pagination span{display:inline-grid;min-width:36px;height:36px;padding:0 9px;place-items:center;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.pagination .current{border-color:var(--blue);background:var(--blue);color:#fff}
.archive-head{padding-block:78px 38px;border-bottom:1px solid var(--line)}.archive-head h1{margin:12px 0 8px;font-size:clamp(34px,5vw,58px);letter-spacing:-.05em}.archive-head p{color:var(--muted)}.latest.compact{padding-top:18px}
.reading-progress{position:fixed;z-index:70;top:67px;left:0;width:100%;height:2px}.reading-progress span{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan))}.article-shell{display:grid;grid-template-columns:minmax(0,820px) 260px;gap:74px;align-items:start;padding-block:54px 100px}.article{min-width:0}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:35px;color:var(--muted);font-size:12px}.breadcrumbs a{color:var(--muted)}.article-header{padding-bottom:34px;border-bottom:1px solid var(--line)}.article-header h1{margin:13px 0 18px;font-size:clamp(34px,5vw,56px);line-height:1.15;letter-spacing:-.045em}.article-deck{max-width:760px;margin:0;color:var(--muted);font-size:17px}.article-meta{display:flex;flex-wrap:wrap;gap:35px;margin-top:27px}.article-meta span{display:grid;gap:2px}.article-meta small{color:var(--muted);font:9px ui-monospace,monospace;letter-spacing:.12em}.article-meta time,.article-meta b{font:600 12px ui-monospace,monospace}.article-content{padding-top:34px;font-size:16px;line-height:1.9}.article-content>*:first-child{margin-top:0}.article-content h2,.article-content h3{scroll-margin-top:95px;line-height:1.35;letter-spacing:-.025em}.article-content h2{margin:2.25em 0 .75em;padding-bottom:.45em;border-bottom:1px solid var(--line);font-size:27px}.article-content h2:before{content:"#";margin-right:.45em;color:var(--blue);font:500 .8em ui-monospace,monospace}.article-content h3{margin:1.8em 0 .65em;font-size:21px}.article-content p,.article-content ul,.article-content ol{margin:1.15em 0}.article-content img{max-width:100%;height:auto;border-radius:10px}.article-content blockquote{margin:1.5em 0;padding:14px 20px;border-left:4px solid var(--blue);background:var(--soft);color:var(--muted)}.article-content table{display:block;overflow:auto;width:100%;border-collapse:collapse}.article-content th,.article-content td{padding:9px 12px;border:1px solid var(--line)}.article-content th{background:var(--soft);text-align:left}.article-content code{padding:.15em .38em;border-radius:4px;background:var(--soft);color:var(--blue);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.code-frame{overflow:hidden;margin:1.5em 0;border:1px solid #303946;border-radius:10px;background:var(--code)}.code-frame pre{overflow:auto;margin:0;padding:18px 20px;background:var(--code);color:var(--code-text);font:13px/1.75 ui-monospace,SFMono-Regular,Menlo,monospace}.code-frame pre code{padding:0;background:none;color:inherit}.code-bar{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;border-bottom:1px solid #303946;color:#8b98a5;font:9px ui-monospace,monospace;letter-spacing:.12em}.code-bar button{border:0;background:none;color:#a9b7c5;cursor:pointer}.article-rail{position:sticky;top:104px}.toc{padding-left:20px;border-left:1px solid var(--line)}.toc h2{margin:8px 0 14px;font-size:15px}.toc nav{display:grid;gap:6px}.toc a{padding:3px 0;color:var(--muted);font-size:12px;line-height:1.45}.toc a:hover{color:var(--blue)}.toc .toc-h3{padding-left:13px}.toc p{color:var(--muted);font-size:12px}.article-tags{display:flex;flex-wrap:wrap;gap:7px;align-items:center;margin-top:35px;padding-top:20px;border-top:1px solid var(--line)}.article-tags strong{margin-right:8px;font-size:12px}.article-tags a{padding:4px 9px;border:1px solid var(--line);border-radius:999px;background:var(--soft);font-size:11px}.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:38px}.post-nav>div{display:grid;padding:16px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.post-nav>div:last-child{text-align:right}.post-nav small{color:var(--muted);font-size:10px}.post-nav a{font-weight:650}.related{margin-top:55px}.related h2{margin:8px 0 18px}.related>div{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.related a{display:grid;gap:12px;padding:16px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text)}.related a:hover{border-color:var(--blue)}.related time{color:var(--muted);font-size:10px}
.comments{margin-top:64px;padding-top:42px;border-top:1px solid var(--line)}.comments-head h2{margin:7px 0 22px}.comment-thread ol,.comment-thread ul{list-style:none;padding:0}.comment-thread li{padding:17px 0;border-bottom:1px solid var(--line)}.comment-thread .comment-children{margin-left:30px;padding-left:18px;border-left:2px solid var(--line)}.comment-author{font-weight:700}.comment-author .avatar{float:left;width:38px;height:38px;margin-right:11px;border-radius:50%}.comment-meta{color:var(--muted);font-size:11px}.comment-content{clear:both;padding-top:7px}.comment-reply{text-align:right;font-size:11px}.respond{margin-top:36px;padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.respond h3{margin-top:0}.respond label{display:grid;gap:5px;color:var(--muted);font-size:12px}.respond textarea,.respond input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--soft);color:var(--text);outline:none}.respond textarea:focus,.respond input:focus{border-color:var(--blue)}.comment-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:12px 0 16px}.comments-closed{color:var(--muted)}
.site-footer{border-top:1px solid var(--line);background:var(--surface)}.footer-inner{display:flex;justify-content:space-between;gap:40px;width:min(1180px,calc(100% - 40px));margin:auto;padding:42px 0;color:var(--muted)}.footer-inner strong{color:var(--text)}.footer-inner p{margin:5px 0;font-size:12px}.footer-meta{text-align:right}.back-top{position:fixed;right:22px;bottom:22px;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;background:var(--surface);color:var(--text);box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s;cursor:pointer}.back-top.show{opacity:1;pointer-events:auto}.error-page{padding-block:120px;text-align:center}.error-code{display:block;color:var(--blue);font:800 clamp(70px,16vw,180px)/1 ui-monospace,monospace;opacity:.18}.error-page h1{margin-top:-20px;font-size:36px}.error-page p{color:var(--muted)}
@media(max-width:960px){.main-nav{display:none;position:absolute;top:59px;right:16px;left:16px;flex-direction:column;align-items:stretch;padding:10px;border:1px solid var(--line);border-radius:11px;background:var(--surface);box-shadow:var(--shadow)}.main-nav.is-open{display:flex}.nav-toggle{display:block;margin-left:auto}.theme-toggle{margin-left:0}.home-hero{grid-template-columns:1fr;gap:38px;padding-block:62px}.hero-console{max-width:560px}.topic-grid{grid-template-columns:1fr 1fr}.topic-card:last-child{grid-column:1/-1}.article-shell{grid-template-columns:minmax(0,1fr);gap:30px}.article-rail{position:static;order:-1}.toc{padding:14px 16px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.toc nav{grid-template-columns:1fr 1fr}.reading-progress{top:67px}}
@media(max-width:640px){.shell{width:min(100% - 24px,1180px)}.header-inner{width:calc(100% - 22px);gap:8px}.brand small{display:none}.home-hero{padding-block:48px}.hero-copy h1{font-size:39px}.hero-copy>p{font-size:15px}.hero-console{transform:none}.section-head{align-items:start;flex-direction:column}.section-head>p{font-size:13px}.topic-grid{grid-template-columns:1fr}.topic-card:last-child{grid-column:auto}.post-row{grid-template-columns:1fr 32px;gap:12px}.post-date{grid-column:1/-1}.post-summary h2,.post-summary h3{font-size:19px}.row-arrow{width:32px;height:32px}.article-shell{padding-top:35px}.article-header h1{font-size:35px}.article-meta{gap:17px}.article-content{font-size:15px}.article-content h2{font-size:23px}.toc nav{grid-template-columns:1fr}.post-nav{grid-template-columns:1fr}.related>div{grid-template-columns:1fr}.comment-fields{grid-template-columns:1fr}.respond{padding:16px}.footer-inner{flex-direction:column}.footer-meta{text-align:left}.reading-progress{top:67px}}
