:root{--ink:#132238;--muted:#66758a;--paper:#f7f9fc;--white:#fff;--line:#dce4ee;--blue:#2e64d6;--blue-deep:#1e49a2;--sky:#e8f0ff;--amber:#d87925;--amber-pale:#fff1df;--serif:"Source Han Serif SC","Songti SC",STSong,SimSun,serif;--sans:"Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;--mono:"SFMono-Regular",Consolas,monospace;--shadow:0 18px 60px rgba(24,48,86,.1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--sans);line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,textarea{font:inherit}.container{width:min(1160px,calc(100% - 40px));margin-inline:auto}.narrow{width:min(760px,calc(100% - 40px));margin-inline:auto}.eyebrow{color:var(--blue);font:500 .76rem/1.3 var(--mono);letter-spacing:.11em;text-transform:uppercase}.skip-link{position:fixed;left:1rem;top:-5rem;z-index:100;padding:.7rem 1rem;background:var(--ink);color:#fff}.skip-link:focus{top:1rem}:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
.site-header{position:sticky;top:0;z-index:40;background:rgba(247,249,252,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:2rem}.brand{display:flex;align-items:center;gap:.72rem;font-family:var(--serif);font-weight:900;letter-spacing:-.03em}.brand-mark{display:grid;place-items:center;width:30px;height:30px;background:var(--blue);color:#fff;font:500 .72rem var(--mono);transform:rotate(-3deg)}.nav{display:flex;align-items:center;gap:1.6rem;font-size:.92rem;font-weight:600}.nav a{padding-block:.35rem;border-bottom:2px solid transparent}.nav a:hover{color:var(--blue);border-color:var(--blue)}
.article-head{padding:5rem 0 2.2rem}.back{display:inline-block;margin-bottom:2.5rem;color:var(--muted);font-size:.85rem}.article-head h1{margin:.9rem 0 1rem;font:900 clamp(2.35rem,5.5vw,4.5rem)/1.2 var(--serif);letter-spacing:-.052em}.dek{color:#53677e;font-size:clamp(1rem,2vw,1.18rem)}.byline{display:flex;align-items:center;gap:.8rem;margin-top:1.8rem;color:var(--muted);font-size:.78rem;line-height:1.6}.byline strong{color:var(--ink)}.avatar{flex:0 0 auto;display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--ink);color:#fff;font-family:var(--serif)}.article-cover{margin-bottom:3rem}.article-cover img{width:100%;aspect-ratio:1.91/1;object-fit:cover;border:1px solid var(--line);box-shadow:var(--shadow)}.article-grid{display:grid;grid-template-columns:minmax(0,760px);justify-content:center}.prose{font-size:1.04rem;color:#243650}.prose h2{margin:3.2rem 0 1rem;color:var(--ink);font:700 clamp(1.45rem,3vw,2rem)/1.35 var(--serif);letter-spacing:-.025em;scroll-margin-top:6rem}.prose h3{margin:2.1rem 0 .75rem;color:var(--ink);font-size:1.16rem;line-height:1.5}.prose p{margin:1.1rem 0}.prose a{color:var(--blue-deep);border-bottom:1px solid #9db8ed}.prose ul,.prose ol{padding-left:1.35rem}.prose li{margin:.45rem 0;padding-left:.25rem}.prose blockquote{margin:2rem 0;padding:.75rem 1.3rem;border-left:4px solid var(--amber);background:var(--amber-pale);color:#614323}.prose table{width:100%;border-collapse:collapse;margin:2rem 0;font-size:.9rem}.prose th,.prose td{padding:.8rem;border:1px solid var(--line);text-align:left;vertical-align:top}.prose th{background:var(--sky)}.prose code{padding:.12rem .35rem;border-radius:3px;background:#e9eef5;font:.85em var(--mono)}.prose pre{overflow:auto;padding:1.2rem;border-radius:4px;background:#172337;color:#e9eef7}.prose pre code{padding:0;background:none}.prose img{margin:2rem auto}.sources{margin-top:3rem;padding:1.5rem;background:#edf2f8}.sources ul{margin-bottom:0;padding-left:1.2rem}.sources a{color:var(--blue-deep)}.author-box{display:flex;gap:1rem;margin-top:2rem;padding:1.5rem;border:1px solid var(--line);background:#fff}.author-box p{margin:.3rem 0;color:var(--muted);font-size:.9rem}.author-box a{color:var(--blue-deep);font-size:.85rem;font-weight:700}
.button{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;min-height:46px;padding:.65rem 1.05rem;border:1px solid var(--ink);background:var(--ink);color:#fff;font-weight:600;border-radius:3px}.comments{margin-top:3rem;padding-top:2.5rem;border-top:1px solid var(--line)}.comments-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:1.5rem}.comments-head h2{margin:.3rem 0 0;font:800 2rem var(--serif)}.comments-head>span{color:var(--muted);font-size:.85rem}.public-comment{padding:1.2rem 0;border-top:1px solid var(--line)}.public-comment>div{display:flex;justify-content:space-between;gap:1rem}.public-comment time{color:var(--muted);font-size:.78rem}.public-comment p{white-space:pre-wrap}.comment-empty{padding:1.2rem;background:#edf2f8;color:var(--muted)}.comments form{margin-top:2rem;padding:1.5rem;background:#fff;border:1px solid var(--line)}.comments form h3{margin:0;font:800 1.25rem var(--serif)}.comments form>p{margin:.3rem 0 1.2rem;color:var(--muted);font-size:.85rem}.comments label{display:grid;gap:.35rem;margin:.8rem 0;font-size:.86rem;font-weight:700}.comments input,.comments textarea{width:100%;padding:.7rem;border:1px solid #bdcad9;border-radius:3px}.comments textarea{min-height:120px;resize:vertical}.comment-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.comment-honeypot{position:absolute!important;left:-9999px!important}.comment-submit{display:flex;align-items:center;gap:1rem;margin-top:1rem}.comment-submit span{color:var(--muted);font-size:.82rem}
.site-footer{margin-top:7rem;padding:3rem 0;background:var(--ink);color:#d7e0ed}.footer-meta{display:flex;justify-content:space-between;gap:1rem;font:.75rem var(--mono);color:#93a3b8}
.cms-feed{padding-top:3rem}.cms-feed-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:1.5rem}.cms-feed-head h2{margin:.4rem 0 0;font:800 clamp(1.8rem,4vw,2.8rem) var(--serif)}.cms-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}.cms-card{overflow:hidden;display:grid;border:1px solid var(--line);background:#fff;box-shadow:0 8px 30px rgba(27,51,87,.05)}.cms-card-image{overflow:hidden;aspect-ratio:1.91/1;background:#dfe8f6}.cms-card-image img{width:100%;height:100%;object-fit:cover}.cms-card-body{padding:1.35rem;display:flex;flex-direction:column}.cms-card-meta,.cms-card-foot{display:flex;justify-content:space-between;gap:1rem;color:var(--muted);font:.7rem/1.5 var(--mono)}.cms-card-meta span{color:var(--blue)}.cms-card h2{margin:.7rem 0 .55rem;font:700 1.32rem/1.45 var(--serif)}.cms-card h2 a:hover{color:var(--blue)}.cms-card p{margin:0 0 1.3rem;color:#596a7f;font-size:.9rem}.cms-card-foot{margin-top:auto;padding-top:1rem;border-top:1px solid var(--line)}.cms-card-foot a{color:var(--ink);font-family:var(--sans);font-weight:700}
@media(max-width:760px){.container,.narrow{width:min(100% - 28px,680px)}.article-head{padding-top:3.5rem}.article-head h1{font-size:clamp(2.2rem,12vw,3.3rem)}.comment-form-grid,.cms-grid{grid-template-columns:1fr}.footer-meta{flex-direction:column}.site-footer{margin-top:4rem}.nav{gap:1rem}}
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