.lg{--paper:#f7f8f5;--ink:#33463b;--body:#3b4d42;--muted:#5b6a5f;--accent:#788e7c;--line:#d9dfd6;--soft:#eef1eb;background:var(--paper);min-height:100svh;color:var(--ink);flex-direction:column;font-family:Arial,PingFang TC,Noto Sans TC,Microsoft JhengHei,sans-serif;display:flex}.lg a{color:inherit}.lg-skip{z-index:40;background:var(--ink);padding:10px 14px;position:absolute;top:-60px;left:16px;color:var(--paper)!important}.lg-skip:focus{top:16px}.lg-header{top:env(safe-area-inset-top,0px);z-index:20;background:linear-gradient(var(--paper) 72%, #f7f8f500);justify-content:space-between;align-items:center;height:88px;padding:0 4.5%;display:flex;position:sticky}.lg-brand{letter-spacing:.04em;white-space:nowrap;align-items:center;min-height:44px;font-family:TURNS OUT Sans TC,Arial,sans-serif;font-size:.9rem;font-weight:780;display:inline-flex;color:#111a21!important}.lg-brand svg{width:29px;height:28px;margin-right:10px;display:block}.lg-brand circle,.lg-dot{fill:var(--accent);color:var(--accent)}.lg-header nav{align-items:center;gap:37px;font-size:12px;display:flex}.lg-header nav a{align-items:center;min-height:44px;display:flex}.lg-header nav a:hover{text-underline-offset:7px;text-decoration:underline}.lg-lang{border-left:1px solid var(--line);padding-left:22px}.lg-main{grid-template-columns:220px minmax(0,1fr);align-items:start;column-gap:72px;width:100%;max-width:1180px;margin:0 auto;padding:56px 4.5% 120px;display:grid}.lg-intro{border-bottom:1px solid var(--line);grid-column:1/-1;max-width:760px;margin-bottom:56px;padding-bottom:56px}.lg-eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0;font-size:12px}.lg-intro h1{letter-spacing:-.04em;text-wrap:balance;margin:18px 0 0;font-size:clamp(40px,5vw,72px);font-weight:300;line-height:1.2}.lg-updated{color:var(--muted);margin:18px 0 0;font-size:13px}.lg-lead{max-width:40em;color:var(--body);margin:28px 0 0;font-size:17px;line-height:1.9}.lg-toc{position:sticky;top:112px}.lg-toc p{color:var(--muted);margin:0 0 12px;font-size:12px}.lg-toc ol{counter-reset:toc;gap:2px;margin:0;padding:0;list-style:none;display:grid}.lg-toc li{counter-increment:toc;grid-template-columns:28px 1fr;font-size:14px;line-height:1.6;display:grid}.lg-toc li:before{content:counter(toc, decimal-leading-zero);color:var(--muted);font-variant-numeric:tabular-nums;font-size:11px;line-height:2.1}.lg-toc a{padding-block:4px}.lg-toc a:hover{text-underline-offset:4px;text-decoration:underline}.lg-body{gap:48px;max-width:680px;display:grid}.lg-summary{background:var(--soft);border-top:1px solid var(--accent);padding:24px 26px}.lg-summary h2{margin:0 0 12px;font-size:15px;font-weight:600}.lg-body section{scroll-margin-top:110px}.lg-body h2{letter-spacing:-.01em;margin:0 0 14px;font-size:20px;font-weight:500;line-height:1.5}.lg-body p,.lg-body li{color:var(--body);font-size:15.5px;line-height:1.95}.lg-body p{margin:0 0 12px}.lg-body ul{gap:6px;margin:0 0 12px;padding:0;list-style:none;display:grid}.lg-body li{padding-left:20px;position:relative}.lg-body li:before{content:"";background:var(--accent);border-radius:50%;width:6px;height:6px;position:absolute;top:.8em;left:2px}.lg-body a,.lg-body button{color:var(--ink);text-underline-offset:4px;-webkit-text-decoration:underline #9ba999;text-decoration:underline #9ba999}.lg-body button{font:inherit;cursor:pointer;background:0 0;border:0;padding:0;display:inline}.lg-body strong{color:var(--ink);font-weight:600}.nf{flex:1;grid-template-columns:minmax(0,.9fr) minmax(0,1fr);align-items:center;gap:48px;width:100%;max-width:1280px;margin:0 auto;padding:24px 4.5% 96px;display:grid}.nf-route{width:min(100%,520px);height:auto;color:var(--ink);overflow:visible}.nf-route path{stroke-dasharray:1;stroke-dashoffset:0;animation:1.6s cubic-bezier(.65,0,.35,1) both nf-draw}.nf-route path+path{animation-delay:.35s}.nf-route circle{fill:var(--accent);transform-box:fill-box;transform-origin:50%;animation:.6s cubic-bezier(.3,1.6,.5,1) 1.7s both nf-dot}@keyframes nf-draw{0%{stroke-dashoffset:1px}}@keyframes nf-dot{0%{transform:scale(0)}}.nf-copy h1{letter-spacing:-.05em;margin:18px 0 0;font-size:clamp(38px,5.2vw,80px);font-weight:300;line-height:1.25}.nf-text{color:var(--body);margin:28px 0 0;font-size:16px;line-height:1.9}.nf-links{flex-wrap:wrap;gap:8px 32px;margin-top:40px;font-size:15px;display:flex}.nf-links a{border-bottom:1px solid #9ba999;align-items:center;min-height:44px;display:inline-flex}.nf-links a:hover{border-bottom-color:var(--ink)}.lg-footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:4px 24px;margin-top:auto;padding:18px 4.5% 24px;font-size:12px;display:flex}@media (width<=900px){.lg-main{grid-template-columns:1fr;padding-top:32px}.lg-intro{margin-bottom:40px;padding-bottom:40px}.lg-toc{margin-bottom:40px;position:static}.nf{grid-template-columns:1fr;gap:24px;padding-top:8px}.nf-route{width:min(42%,180px)}}@media (width<=700px){.lg-header{height:72px}.lg-brand svg{width:25px;height:25px;margin-right:8px}.lg-header nav{gap:20px;font-size:11px}.lg-lang{padding-left:16px}.lg-lead{font-size:16px}}@media (prefers-reduced-motion:reduce){.nf-route path,.nf-route circle{animation:none}}.lg-body code{background:var(--soft);padding:1px 5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em}.lg-operator{border:1px solid var(--line);color:var(--body);margin:24px 0 0;padding:14px 18px;font-size:14px;line-height:1.8}.lg-operator span{display:block}