:root{--sga-rail-w: 268px;--sga-pine-2: #0C3A32;--sga-pine-3: #1C5F53;--sga-on-pine: #EEF4EF;--sga-on-pine-soft: #A9C4BB;--sga-panel: #FFFFFF;--sga-line: #D9E1D8;--sga-sage: #E7EEE5;--sga-accent-soft: #FDE9DA;--sga-accent-ink: #9A4208;--sga-col: 920px}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;font-family:var(--sga-font-body);color:var(--sga-ink);background:var(--sga-canvas);line-height:1.65;font-size:16.5px;overflow-wrap:break-word}[dir=rtl] body{line-height:1.85}a{color:var(--sga-primary);text-underline-offset:3px;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--sga-accent);outline-offset:2px;border-radius:4px}h1,h2,h3{font-family:var(--sga-font-display);line-height:1.18;margin:0;font-weight:700;letter-spacing:-.01em}[dir=rtl] h1,[dir=rtl] h2,[dir=rtl] h3{letter-spacing:0;line-height:1.4}.sga-skip{position:absolute;inset-inline-start:12px;top:-60px;background:var(--sga-accent);color:var(--sga-ink);padding:10px 14px;border-radius:8px;z-index:20;text-decoration:none;font-weight:600}.sga-skip:focus{top:12px}.sga-shell{display:grid;grid-template-columns:var(--sga-rail-w) minmax(0,1fr);min-height:100vh}.sga-rail{background:var(--sga-primary);color:var(--sga-on-pine);position:sticky;top:0;align-self:start;height:100vh;overflow-y:auto;display:flex;flex-direction:column;padding:26px 22px 22px}.sga-brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--sga-on-pine);font-family:var(--sga-font-display);font-weight:700;font-size:1.12rem;line-height:1.15}.sga-brand img{width:40px;height:40px;border-radius:10px;display:block;flex:none}.sga-brand b{display:block;color:var(--sga-accent);font-weight:700}.sga-menu{display:grid;gap:2px;margin-top:30px}.sga-menu a{display:flex;align-items:center;gap:10px;min-height:44px;padding:6px 10px;border-radius:10px;color:var(--sga-on-pine-soft);text-decoration:none;font-weight:600;font-size:.98rem;transition:background var(--sga-dur) var(--sga-ease),color var(--sga-dur) var(--sga-ease)}.sga-menu a:before{content:"";width:8px;height:8px;border-radius:50%;background:transparent;border:2px solid var(--sga-pine-3);flex:none}.sga-menu a:hover,.sga-menu a[aria-current=page]{color:var(--sga-on-pine);background:var(--sga-pine-2)}.sga-menu a[aria-current=page]:before{background:var(--sga-accent);border-color:var(--sga-accent)}.sga-rail-foot{margin-top:auto;padding-top:24px;font-size:.88rem;color:var(--sga-on-pine-soft)}.sga-langs ul{list-style:none;margin:0;padding:14px 0 0;border-top:1px solid var(--sga-pine-3);display:flex;flex-wrap:wrap;gap:4px 6px}.sga-langs a,.sga-langs span{display:inline-flex;align-items:center;min-height:32px;padding:2px 10px;border-radius:999px;text-decoration:none;color:var(--sga-on-pine-soft)}.sga-langs a:hover{color:var(--sga-on-pine);background:var(--sga-pine-2)}.sga-langs [aria-current]{color:var(--sga-primary);background:var(--sga-on-pine);font-weight:700}.sga-stage{min-width:0;display:flex;flex-direction:column}main{display:block;flex:1}.sga-col{max-width:var(--sga-col);margin-inline:auto;padding-inline:32px}.sga-page{padding-block:52px 72px}.sga-kicker{font-size:.82rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--sga-accent-ink);margin:0 0 10px}[dir=rtl] .sga-kicker{letter-spacing:0}.sga-h1{font-size:clamp(1.9rem,4.4vw,2.7rem)}.sga-lede{color:var(--sga-muted);font-size:1.08rem;max-width:66ch;margin:14px 0 0}.sga-sec{margin-top:56px}.sga-sec>h2{font-size:1.55rem}.sga-sec>h2+p{color:var(--sga-muted);max-width:70ch;margin:8px 0 0}.sga-note{font-size:.92rem;color:var(--sga-muted);max-width:78ch}.sga-panel{background:var(--sga-panel);border:1px solid var(--sga-line);border-radius:var(--sga-radius);padding:22px 24px}.sga-panel-key{border-inline-start:6px solid var(--sga-accent)}.sga-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:999px;background:var(--sga-accent);color:var(--sga-ink);text-decoration:none;border:0;font:inherit;font-weight:700;cursor:pointer;transition:filter var(--sga-dur) var(--sga-ease)}.sga-btn:hover{filter:brightness(.95)}.sga-btn-ghost{background:transparent;color:var(--sga-primary);border:2px solid var(--sga-primary)}.sga-btn-ghost:hover{background:var(--sga-sage);filter:none}.sga-cards{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));margin-top:20px}.sga-card{display:block;background:var(--sga-panel);border:1px solid var(--sga-line);border-radius:var(--sga-radius);padding:18px 20px 20px;text-decoration:none;color:var(--sga-ink);transition:border-color var(--sga-dur) var(--sga-ease),transform var(--sga-dur) var(--sga-ease)}a.sga-card:hover{border-color:var(--sga-primary);transform:translateY(-2px)}.sga-card h3{font-size:1.22rem;color:var(--sga-primary)}.sga-card p{margin:6px 0 0;color:var(--sga-muted);font-size:.95rem}.sga-card .sga-zh{display:block;font-size:.9rem;color:var(--sga-accent-ink);font-weight:600;margin-top:2px}.sga-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:18px;background:var(--sga-panel);border:1px solid var(--sga-line);border-radius:var(--sga-radius);max-width:100%}table.sga-t{border-collapse:collapse;width:100%;font-size:.95rem}.sga-t th,.sga-t td{padding:11px 14px;text-align:start;vertical-align:top;border-bottom:1px solid var(--sga-line)}.sga-t thead th{background:var(--sga-sage);font-size:.82rem;letter-spacing:.03em;text-transform:uppercase;color:var(--sga-primary);white-space:nowrap}[dir=rtl] .sga-t thead th{letter-spacing:0}.sga-t tbody tr:last-child>*{border-bottom:0}.sga-t tbody th{font-weight:700}.sga-t .sga-num{font-variant-numeric:tabular-nums;white-space:nowrap}.sga-t [lang=zh]{font-size:.98rem}.sga-tag{display:inline-block;padding:1px 9px;border-radius:999px;background:var(--sga-sage);color:var(--sga-primary);font-size:.8rem;font-weight:700;white-space:nowrap}.sga-tag-warn{background:var(--sga-accent-soft);color:var(--sga-accent-ink)}.sga-art{max-width:740px}.sga-crumb{font-size:.88rem;color:var(--sga-muted)}.sga-crumb a{color:var(--sga-muted)}.sga-art h1{font-size:clamp(1.8rem,4.2vw,2.5rem);margin-top:14px}.sga-meta{color:var(--sga-muted);font-size:.9rem;margin:14px 0 0;padding-bottom:20px;border-bottom:1px solid var(--sga-line)}.sga-prose{font-size:1.05rem;line-height:1.75}.sga-prose h2{font-size:1.5rem;margin:40px 0 10px}.sga-prose h3{font-size:1.18rem;margin:28px 0 8px;color:var(--sga-primary)}.sga-prose p,.sga-prose ul,.sga-prose ol{margin:14px 0}.sga-prose ul{list-style:disc;padding-inline-start:1.3em}.sga-prose ol{padding-inline-start:1.4em}.sga-prose li{margin:6px 0}.sga-prose li::marker{color:var(--sga-accent-ink)}.sga-prose table{border-collapse:collapse;display:block;overflow-x:auto;max-width:100%;margin:20px 0;font-size:.96rem}.sga-prose th,.sga-prose td{border:1px solid var(--sga-line);padding:9px 13px;text-align:start;background:var(--sga-panel)}.sga-prose th{background:var(--sga-sage);color:var(--sga-primary)}.sga-prose blockquote{margin:20px 0;padding:4px 20px;border-inline-start:6px solid var(--sga-accent);background:var(--sga-panel);border-radius:0 var(--sga-radius) var(--sga-radius) 0}.sga-prose hr{border:0;border-top:1px solid var(--sga-line);margin:36px 0 18px}.sga-prose hr+p{font-size:.92rem;color:var(--sga-muted)}.sga-prose code{background:var(--sga-sage);padding:1px 6px;border-radius:6px;font-size:.92em}.sga-list{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:12px}.sga-list li{background:var(--sga-panel);border:1px solid var(--sga-line);border-radius:var(--sga-radius);padding:16px 20px}.sga-list a{font-family:var(--sga-font-display);font-size:1.18rem;font-weight:700;text-decoration:none}.sga-list a:hover{text-decoration:underline;text-decoration-color:var(--sga-accent);text-decoration-thickness:3px}.sga-list p{margin:4px 0 0;color:var(--sga-muted);font-size:.96rem}.sga-foot{border-top:1px solid var(--sga-line);background:var(--sga-sage);font-size:.9rem;color:var(--sga-muted);padding-block:30px 40px}.sga-foot p{margin:0 0 8px;max-width:78ch}.sga-foot strong{color:var(--sga-primary);font-family:var(--sga-font-display);font-size:1.05rem}.sga-foot ul{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 20px}.sga-foot a{color:var(--sga-primary)}@media(max-width:940px){.sga-shell{display:block}.sga-rail{position:static;height:auto;padding:16px 16px 12px;overflow:visible}.sga-brand img{width:34px;height:34px}.sga-brand b{display:inline}.sga-menu{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}.sga-menu a{min-height:40px;padding:4px 12px;background:var(--sga-pine-2);font-size:.93rem}.sga-menu a:before{display:none}.sga-menu a[aria-current=page]{background:var(--sga-accent);color:var(--sga-ink)}.sga-rail-foot{margin-top:12px;padding-top:0}.sga-langs ul{padding-top:10px}.sga-col{padding-inline:18px}.sga-page{padding-block:32px 52px}.sga-sec{margin-top:44px}.sga-panel{padding:18px 16px}}