:root{color-scheme:dark;--paper:#0c1015;--ink:#edf1f7;--muted:#a0afc0;--line:#2b3542;--link:#8cc8ee}
*{box-sizing:border-box}
html{font-size:16px;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Avenir Next","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.85;-webkit-text-size-adjust:100%}
a{color:var(--link);text-underline-offset:4px;text-decoration-thickness:1px}
a:hover{color:#c7e7fa}
a:focus-visible{outline:2px solid var(--link);outline-offset:5px;border-radius:2px}
.skip-link{position:absolute;top:12px;left:12px;transform:translateY(-200%);padding:8px 16px;background:var(--paper);z-index:2}
.skip-link:focus{transform:none}
.page-header,.page-footer,main{width:min(880px,calc(100% - 64px));margin-inline:auto}
.page-header{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:96px;border-bottom:1px solid var(--line)}
.wordmark{font-size:24px;font-weight:750;letter-spacing:-.06em;text-decoration:none;color:var(--ink)}
.page-header nav,.page-footer nav{display:flex;flex-wrap:wrap;gap:8px 24px;font-size:14px}
.page-header nav a,.page-footer a{color:var(--muted);text-decoration:none}
.page-header [aria-current=page]{color:var(--ink)}
main{padding-block:64px 72px}
.eyebrow{margin:0 0 16px;font-size:13px;color:var(--link);letter-spacing:.12em}
h1{max-width:760px;margin:0 0 24px;font-size:clamp(30px,5vw,44px);line-height:1.35;font-weight:650;letter-spacing:-.035em}
.lead{max-width:710px;margin:0 0 32px;color:#cdd6e2;font-size:19px;line-height:1.9}
.date{margin:0 0 32px;color:var(--muted);font-size:14px}
section{margin-top:36px;max-width:760px}
h2{margin:0 0 10px;font-size:21px;font-weight:650;line-height:1.5}
p{margin:0 0 16px;overflow-wrap:anywhere}
.note{margin:36px 0;padding:4px 0 4px 24px;border-left:2px solid var(--link);max-width:720px;color:#cdd6e2}
.note p:last-child{margin:0}
.entry-link{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:8px 24px;background:#edf1f7;border-radius:8px;color:#0c1015;font-size:15px;font-weight:650;text-decoration:none}
.entry-link:hover{background:#d4e9f6;color:#0c1015}
.page-footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-block:24px 40px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.page-footer p{margin:0}
@media(max-width:600px){.page-header,.page-footer,main{width:calc(100% - 40px)}.page-header{align-items:flex-start;flex-direction:column;gap:8px;padding-block:20px;min-height:0}.page-header nav,.page-footer nav{gap:8px 20px}main{padding-block:40px 48px}.lead{font-size:17px}.note{padding-left:16px}section{margin-top:28px}}
@media print{body{background:#fff;color:#111}a,.page-header nav a,.page-footer a,.lead,.note,.date{color:#222}.skip-link,.entry-link{display:none}main{padding-block:24px}.page-header,.page-footer,main{width:100%}h1{font-size:30px}section{break-inside:avoid}}