:root{color-scheme:light;--page:#f7f8fa;--surface:#fcfcfd;--tint:#edf2f2;--ink:#202c33;--body:#45535b;--muted:#626f78;--line:#dce2e6;--accent:#236765;--accent-hover:#154e4c;--code:#edf0f3;--radius:12px;font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",system-ui,sans-serif}
:root[data-theme=dark]{color-scheme:dark;--page:#161c20;--surface:#1c2429;--tint:#202f31;--ink:#e9eef0;--body:#bbc7ce;--muted:#a1b0b8;--line:#35434b;--accent:#89c8c0;--accent-hover:#b3dfd9;--code:#242f36}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--page:#161c20;--surface:#1c2429;--tint:#202f31;--ink:#e9eef0;--body:#bbc7ce;--muted:#a1b0b8;--line:#35434b;--accent:#89c8c0;--accent-hover:#b3dfd9;--code:#242f36}}
*{box-sizing:border-box}html{scroll-padding-top:32px}body{margin:0;background:var(--page);color:var(--ink);font-size:15px;line-height:1.8;min-height:100dvh;display:flex;flex-direction:column}main{flex:1}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}button,a,input{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button:disabled{cursor:default}button[hidden],[hidden]{display:none!important}img{display:block;max-width:100%}h1,h2,h3,p{margin:0}h1,h2,h3{letter-spacing:-.035em;font-weight:650}h1{font-size:38px;line-height:1.4}h2{font-size:21px;line-height:1.5}h3{font-size:21px;line-height:1.65}p{color:var(--body)}.wrap{width:min(1120px,calc(100% - 64px));margin:0 auto}.site-header{border-bottom:1px solid var(--line);background:var(--surface)}.header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:inline-flex;align-items:center;gap:12px;font-size:18px;font-weight:650;white-space:nowrap;letter-spacing:-.02em}.brand-mark{width:36px;height:36px;object-fit:contain;border-radius:5px}.header-actions{display:flex;align-items:center;gap:32px}.header-actions nav{display:flex;gap:28px}.header-actions nav a{font-size:14px;color:var(--muted);position:relative;padding:25px 0}.header-actions nav a:hover,.header-actions nav a[aria-current=page]{color:var(--accent)}.header-actions nav a[aria-current=page]:after{content:"";position:absolute;bottom:13px;left:0;right:0;height:2px;background:var(--accent)}.theme-button{color:var(--muted);font-size:13px;background:transparent;border:1px solid var(--line);border-radius:8px;padding:5px 12px;white-space:nowrap}.theme-button:hover{background:var(--tint);color:var(--accent)}.intro{padding:55px 0 50px;display:grid;grid-template-columns:1.5fr 1fr;gap:58px;align-items:center}.eyebrow{font-size:13px;color:var(--accent);margin-bottom:13px;letter-spacing:.07em}.intro h1{font-size:39px;margin-bottom:17px}.intro-description{font-size:16px;line-height:2;max-width:39ch;margin-bottom:23px}.intro-image{width:100%;height:245px;object-fit:cover;border-radius:var(--radius)}.text-link{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--accent)}.text-link:hover{color:var(--accent-hover)}.text-link span{font-size:16px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:65px;align-items:start;padding:0 0 68px}.notes-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}.quiet-link{font-size:13px;color:var(--muted)}.quiet-link:hover{color:var(--accent)}.search-form label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}.search-field{display:flex;min-height:44px;border:1px solid var(--line);border-radius:9px;background:var(--surface);overflow:hidden}.search-field:focus-within{border-color:var(--accent)}.search-field input{width:100%;min-width:0;border:0;background:transparent;padding:10px 13px;color:var(--ink);font-size:14px}.search-field input::placeholder{color:var(--muted)}.search-field input:focus-visible{outline:0}.search-field button{border:0;border-left:1px solid var(--line);background:var(--tint);color:var(--accent);padding:7px 19px;font-size:13px;white-space:nowrap}.search-field button:hover{color:var(--accent-hover)}.topic-nav{display:flex;flex-wrap:wrap;gap:8px 20px;padding:19px 0 5px}.topic-nav a{font-size:13px;color:var(--muted);padding:4px 0}.topic-nav a[aria-current=true]{color:var(--accent);font-weight:650}.topic-nav a:hover{color:var(--accent)}.post-row{padding:25px 0 26px}.post-row:not([hidden])~.post-row:not([hidden]){border-top:1px solid var(--line)}.post-meta{display:flex;align-items:center;gap:15px;color:var(--muted);font-size:12px;margin-bottom:9px}.post-meta>span{color:var(--accent)}.post-meta time,.post-tail>span,.archive-group time{font-variant-numeric:tabular-nums}.post-row h3{margin-bottom:8px}.post-row h3 a:hover{color:var(--accent)}.post-row>p{font-size:14px;line-height:1.9}.post-tail{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-top:15px;font-size:12px;color:var(--muted)}.post-tail a{color:var(--accent);font-weight:500}.post-tail a:hover{color:var(--accent-hover)}.post-tail a span{margin-left:7px;font-size:15px}.sidebar{padding-top:4px}.author-note{border-top:1px solid var(--line);padding:21px 4px 0}.author-symbol{width:38px;height:38px;border:1px solid var(--accent);color:var(--accent);border-radius:9px;display:grid;place-items:center;font-size:19px;margin-bottom:17px}.author-note h2{font-size:18px;margin-bottom:11px}.author-note p{font-size:13px;line-height:1.95;margin-bottom:17px}.author-note .text-link{font-size:12px}.side-links,.subscribe-note{margin-top:29px;padding:0 4px}.side-links h2,.subscribe-note h2{font-size:15px;margin-bottom:14px}.side-links>a{display:flex;justify-content:space-between;font-size:13px;margin-top:12px;color:var(--body)}.side-links>a span+span{font-size:12px;color:var(--muted)}.side-links>a:hover{color:var(--accent)}.subscribe-note{padding-top:24px;border-top:1px solid var(--line)}.subscribe-note p{font-size:13px;margin-bottom:12px}.site-footer{border-top:1px solid var(--line);background:var(--surface);margin-top:auto}.footer-inner{min-height:86px;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:12px;color:var(--muted)}.footer-note{margin-left:20px}.footer-inner>a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.simple-page{max-width:850px;padding-top:54px;padding-bottom:70px;min-height:calc(100dvh - 166px)}.page-title{margin-bottom:36px}.page-title h1{margin-bottom:13px}.page-title>p:last-child{font-size:15px}.archive-group>h2{font-size:18px;margin-bottom:17px}.archive-group ol{list-style:none;padding:0;margin:0}.archive-group li{display:grid;grid-template-columns:78px 1fr;gap:25px;padding:20px 0}.archive-group li+li{border-top:1px solid var(--line)}.archive-group time{color:var(--muted);font-size:13px;line-height:30px}.archive-group li a{display:block;font-size:19px;font-weight:550}.archive-group li a:hover{color:var(--accent)}.archive-group li span{font-size:12px;color:var(--muted);display:block;margin-top:6px}.about-page{max-width:760px}.prose{font-size:15px;line-height:2.05;color:var(--body);overflow-wrap:anywhere}.prose p{margin:0 0 21px}.prose h2{font-size:22px;margin:35px 0 14px;color:var(--ink);scroll-margin-top:32px}.prose ul{padding-left:23px;margin:0 0 23px}.prose li{padding-left:4px;margin:5px 0}.prose pre{border:1px solid var(--line);border-radius:var(--radius);background:var(--code);color:var(--ink);font-size:13px;line-height:1.95;overflow:auto;padding:21px 24px;margin:24px 0 28px;max-width:100%;white-space:pre;tab-size:4}.prose code{font-family:"Cascadia Code",Consolas,"Microsoft YaHei",monospace}.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:4px}.site-info{padding:20px 24px;background:var(--tint);border-radius:var(--radius);font-size:14px;margin:23px 0}.site-info>div{display:grid;grid-template-columns:105px minmax(0,1fr);gap:14px;margin:8px 0}.site-info dt{color:var(--muted)}.site-info dd{margin:0}.article{min-width:0}.article-layout{display:grid;grid-template-columns:minmax(0,740px) 210px;gap:82px;padding-top:35px;padding-bottom:64px}.back-link{font-size:13px;color:var(--muted)}.back-link:hover{color:var(--accent)}.article-header{margin-top:31px;margin-bottom:32px}.article-header h1{font-size:32px;margin-bottom:18px}.article-meta{display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin-bottom:24px}.article-intro{font-size:16px;line-height:1.9;padding-left:17px;border-left:3px solid var(--accent)}.article-aside{position:sticky;top:38px;padding-top:69px}.article-aside h2{font-size:15px;margin-bottom:17px}.article-aside ol{list-style:none;padding:0;margin:0 0 30px}.article-aside li{margin:13px 0;font-size:13px;color:var(--muted)}.article-aside a:hover{color:var(--accent)}.article-end{border-top:1px solid var(--line);margin-top:38px;padding-top:22px}.article-end p{font-size:12px;color:var(--muted);margin-bottom:20px}.article-end a{font-size:14px;color:var(--accent);line-height:1.9}.error-page{padding-top:95px}.error-page h1{font-size:31px;margin-bottom:16px}.primary-link,.reset-search{display:inline-block;margin-top:22px;border:0;background:var(--accent);color:var(--page);border-radius:8px;padding:10px 17px;font-size:14px;font-weight:600}.empty-state{text-align:center;padding:48px 12px}.empty-state h3{font-size:19px;margin-bottom:10px}.empty-state p,.noscript-note{font-size:13px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;z-index:5;top:12px;left:12px;transform:translateY(-160%);background:var(--surface);border:1px solid var(--accent);border-radius:8px;padding:8px 16px;font-size:14px}.skip-link:focus{transform:translateY(0)}
@media(prefers-reduced-motion:no-preference){a,button{transition:color .16s ease,background-color .16s ease}.theme-button:active,.primary-link:active,.reset-search:active{transform:translateY(1px)}}
@media(max-width:900px){.wrap{width:calc(100% - 44px)}.intro{gap:35px;grid-template-columns:1.25fr 1fr}.intro h1{font-size:34px}.intro-image{height:220px}.content-grid{grid-template-columns:minmax(0,1fr) 235px;gap:34px}.article-layout{grid-template-columns:minmax(0,1fr) 175px;gap:35px}.author-note{padding:21px 4px 0}.header-actions{gap:24px}}
@media(max-width:767px){.wrap{width:calc(100% - 36px)}.header-inner{min-height:68px;gap:13px}.brand{gap:8px;font-size:15px}.brand-mark{width:30px;height:30px}.header-actions{gap:13px}.header-actions nav{gap:15px}.header-actions nav a{font-size:13px;padding:21px 0}.header-actions nav a[aria-current=page]:after{bottom:10px}.theme-button{font-size:11px;padding:4px 7px}.intro{grid-template-columns:1fr;gap:25px;padding:34px 0}.intro h1{font-size:31px;margin-bottom:12px}.intro-description{font-size:14px;line-height:1.95;margin-bottom:17px}.intro-image{height:190px;object-position:center 47%}.eyebrow{font-size:12px;margin-bottom:9px}.content-grid{grid-template-columns:1fr;gap:32px;padding-bottom:43px}.notes-heading{margin-bottom:18px}.notes-heading h2{font-size:19px}.post-row{padding:22px 0 24px}.post-row h3{font-size:19px}.post-row>p{font-size:13px}.post-tail{margin-top:12px}.sidebar{display:grid;grid-template-columns:1fr;gap:0}.author-note{padding:21px 4px 0}.author-symbol{display:none}.author-note h2{font-size:17px}.side-links{margin-top:25px}.subscribe-note{margin-top:25px;padding-top:21px}.footer-inner{min-height:102px;align-items:flex-start;justify-content:center;flex-direction:column;gap:6px;padding-top:20px;padding-bottom:20px;font-size:11px}.footer-note{margin-left:16px}.simple-page{padding-top:36px;padding-bottom:48px}.page-title h1{font-size:29px}.page-title{margin-bottom:28px}.archive-group li{grid-template-columns:60px minmax(0,1fr);gap:14px;padding:19px 0}.archive-group li a{font-size:17px}.article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:25px;padding-bottom:45px}.article-aside{display:none}.article-header{margin-top:24px;margin-bottom:27px}.article-header h1{font-size:27px;line-height:1.5;margin-bottom:14px}.article-meta{gap:16px;margin-bottom:22px}.article-intro{font-size:14px}.prose{font-size:14px;line-height:2}.prose h2{font-size:20px;margin-top:30px}.prose pre{font-size:12px;padding:17px 16px}.site-info{padding:16px}.site-info>div{grid-template-columns:85px 1fr;gap:9px;font-size:13px}.error-page{padding-top:64px}}
@media(max-width:360px){.wrap{width:calc(100% - 28px)}.brand{font-size:13px}.brand-mark{width:27px;height:27px}.header-actions nav{gap:10px}.header-actions{gap:9px}.theme-button{padding:3px 5px}.header-actions nav a{font-size:12px}.topic-nav{gap:8px 15px}}