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h3{color:var(--os-gold)}.footer{z-index:1;color:var(--os-ink-dim);padding:30px 0 45px;font-size:12px;position:relative}.footer:before{content:"";background:var(--os-hairline);opacity:.6;height:1px;margin-bottom:30px;display:block}.footer b{color:var(--os-cyan);font-family:var(--os-font-en);letter-spacing:1px}.post-main{padding-top:64px}.post-hero{padding:74px 0 44px;position:relative;overflow:hidden}.post-hero:before{content:"";pointer-events:none;background:var(--os-stripes);opacity:.55;width:min(38vw,460px);height:100%;position:absolute;top:0;right:0;-webkit-mask-image:linear-gradient(90deg,#0000,#000 65%);mask-image:linear-gradient(90deg,#0000,#000 65%)}.post-crumbs{color:var(--os-ink-faint);letter-spacing:1px;animation:os-rise .7s var(--os-ease-out) both;align-items:center;gap:10px;font-size:12px;display:flex}.post-crumbs a{border-bottom:1px solid #7fd4ff59}.post-cat-chip{--tone:var(--os-cyan);font:400 10px var(--os-font-en);letter-spacing:2px;color:#05070d;background:var(--tone);clip-path:polygon(5px 0,100% 0,calc(100% - 5px) 100%,0 100%);padding:3px 10px}.post-hero h1{letter-spacing:1px;max-width:900px;animation:os-rise .7s var(--os-ease-out) 80ms both;margin-top:18px;font-size:clamp(26px,4.4vw,44px);line-height:1.3}.post-meta{color:var(--os-ink-faint);animation:os-rise .7s var(--os-ease-out) .16s both;flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;font-size:12.5px;display:flex}.post-author{color:var(--os-ink-dim);align-items:center;gap:9px;font-size:14px;font-weight:600;display:inline-flex}.post-hero h1.stat-shine,.post-meta .post-author.stat-shine{animation:.85s ease-out os-shine-pop}.post-author img{object-fit:cover;border:1px solid var(--os-line);border-radius:50%;width:30px;height:30px}.post-author img.is-broken{display:none}.post-stats{animation:os-rise .7s var(--os-ease-out) .24s both;flex-wrap:wrap;gap:14px;margin-top:24px;display:flex}.post-stat{border:1px solid var(--os-line);border-left:3px solid var(--os-gold);clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);background:#080d17b8;min-width:108px;padding:10px 14px}.post-stat:nth-child(2){border-left-color:var(--os-red)}.post-stat:nth-child(3){border-left-color:var(--os-cyan)}.post-stat:nth-child(4){border-left-color:var(--os-blue)}button.post-stat{font:inherit;color:inherit;text-align:left;cursor:pointer;transition:border-color .2s,background .2s}button.post-stat:hover,button.post-stat:focus-visible,button.post-stat.is-open{border-color:var(--os-cyan);background:#2e9bff1f}button.post-stat:focus-visible{outline:1px solid var(--os-cyan);outline-offset:3px}.post-stat b{color:var(--os-ink);font:400 20px var(--os-font-en);display:block}.post-stat span{color:var(--os-ink-faint);letter-spacing:1px;font-size:11px}.post-main [id]{scroll-margin-top:92px}.post-toc{z-index:60;border:1px solid var(--os-line);border-left:3px solid var(--os-cyan);clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);opacity:.6;background:#060a12c7;width:188px;max-height:62vh;padding:12px 0;transition:opacity .25s;display:none;position:fixed;top:50%;right:26px;overflow-y:auto;transform:translateY(-50%)}.post-toc:hover,.post-toc:focus-within{opacity:1}.post-toc.is-hidden{opacity:0;pointer-events:none}.post-toc-title{color:var(--os-ink-faint);font:400 10px var(--os-font-en);letter-spacing:1.6px;padding:0 14px 8px}.post-toc-link{color:#9fb0cc;white-space:nowrap;text-overflow:ellipsis;border-left:2px solid #0000;padding:5px 14px;font-size:12px;line-height:1.5;transition:color .2s,border-color .2s,background .2s;display:block;overflow:hidden}.post-toc-link.is-sub{padding-left:26px;font-size:11.5px}.post-toc-link:hover{color:var(--os-ink)}.post-toc-link.is-active{color:var(--os-cyan);border-left-color:var(--os-cyan);text-shadow:0 0 12px #2e9bff99;background:#2e9bff1a}@media (width>=1320px){.post-toc{display:block}.post-main .wrap{padding-right:230px}}.post-tags{animation:os-rise .7s var(--os-ease-out) .3s both;flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.post-tag{font:400 10.5px var(--os-font-cn);letter-spacing:1px;color:var(--os-cyan);clip-path:polygon(4px 0,100% 0,calc(100% - 4px) 100%,0 100%);background:#2e9bff12;border:1px solid #7fd4ff52;padding:3px 11px}.post-actions{animation:os-rise .7s var(--os-ease-out) .36s both;flex-wrap:wrap;gap:13px;margin-top:26px;display:flex}.post-body{padding:30px 0 40px;position:relative}.project-guide{border:1px solid var(--os-line);border-top:2px solid var(--tone);background:linear-gradient(135deg, color-mix(in srgb, var(--tone) 6%, #080d17), #080d17);color:#c9d5e8;border-radius:8px;max-width:860px;margin:0 auto 46px;padding:28px;font-size:14px;line-height:1.8}.guide-heading{justify-content:space-between;align-items:center;gap:16px;display:flex}.guide-heading h2{color:var(--os-ink);margin-top:6px;font-size:25px}.guide-kind{color:var(--tone);border:1px solid color-mix(in srgb, var(--tone) 40%, transparent);border-radius:4px;flex-shrink:0;padding:3px 10px;font-size:11px}.guide-summary{color:var(--os-ink);margin-top:18px;font-size:16px;line-height:1.85}.guide-audience{color:#a8bad3;margin-top:12px;font-size:12px}.guide-audience span{color:var(--tone);margin-right:8px}.guide-flow{width:100%;height:auto;font-family:var(--os-font-cn);display:block}.guide-node{fill:#0d1726;stroke:color-mix(in srgb, var(--tone) 35%, #253043);stroke-width:1px}.guide-node-title{fill:#dce8f9;font-size:17px}.guide-line{fill:none;stroke:var(--tone);stroke-width:1.5px;opacity:.65}.guide-tree{max-width:700px;margin:26px auto}.guide-tree-root{border:1px solid color-mix(in srgb, var(--tone) 45%, #253043);background:color-mix(in srgb, var(--tone) 12%, #0b1422);border-radius:6px;padding:14px 18px}.guide-tree-root strong{color:#dce8f9;font-size:17px;display:block}.guide-tree-root span{color:#a8bad3;font-size:12px}.guide-branches{border-left:1px solid color-mix(in srgb, var(--tone) 65%, transparent);margin-left:18px;padding:18px 0 0 36px}.guide-part{border:1px solid color-mix(in srgb, var(--tone) 35%, #253043);background:#0d1726;border-radius:5px}.guide-part+.guide-part{margin-top:12px}.guide-part>summary{cursor:pointer;border-radius:5px;align-items:center;gap:12px;min-height:52px;padding:12px 16px;list-style:none;display:flex;position:relative}.guide-part>summary::-webkit-details-marker{display:none}.guide-part>summary:hover,.guide-part>summary:focus-visible{background:#182b42}.guide-part>summary:focus-visible{outline:2px solid var(--tone);outline-offset:3px}.guide-part[open]{border-color:color-mix(in srgb, var(--tone) 65%, #253043)}.guide-part[open]>summary{background:color-mix(in srgb, var(--tone) 8%, #0d1726)}.guide-branch-line{width:36px;height:2px;position:absolute;top:25px;left:-37px;overflow:visible}.guide-part-number{color:#a8bad3;font:12px var(--os-font-cn);flex-shrink:0}.guide-part-title{color:#dce8f9;flex:1;font-size:15px;line-height:1.6}.guide-part-state{color:var(--tone);flex-shrink:0;font-size:11px}.guide-part-state:after{content:"展开 ＋"}.guide-part[open]>summary .guide-part-state:after{content:"收起 −"}.guide-part-body{overflow-wrap:anywhere;padding:0 16px 16px}.guide-part-body>p{border-top:1px solid var(--os-line);padding-top:12px}.guide-part-source{margin-top:14px;font-size:12px}.guide-part-source a{color:var(--tone);text-underline-offset:4px;text-decoration:underline}.guide-part-source span{white-space:nowrap}.guide-subtopics{margin:14px 0 0 10px;padding:0 0 0 22px}.guide-part-child{background:#0a1320}.guide-part-child>summary{gap:8px;padding:10px 12px}.guide-part-child .guide-branch-line{width:22px;left:-23px}.guide-part-child .guide-part-title{font-size:14px}.guide-part-child .guide-part-body{padding:0 12px 12px;font-size:13px}.guide-tree-hint{color:#97abc7;margin-top:14px;font-size:11px}.guide-ref{color:var(--tone);white-space:nowrap;padding:3px;font-size:12px}.guide-ref:hover{text-decoration:underline}.guide-principle{border-top:1px solid var(--os-line);border-bottom:1px solid var(--os-line)}.guide-principle summary,.guide-sources summary{cursor:pointer;color:var(--os-ink);padding:14px 0}.guide-principle summary span{color:var(--tone);margin-right:10px;font-size:12px}.guide-principle-body{padding:0 0 18px}.guide-flow{max-width:400px;margin:18px auto 0}.guide-start{padding:20px 0 14px}.guide-start strong{color:var(--tone);font-size:13px}.guide-start p{margin:4px 0 10px}.guide-original{color:var(--os-ink);text-underline-offset:4px;text-decoration:underline}.guide-sources{border-top:1px solid var(--os-line);font-size:12px}.guide-sources ol{padding:0 0 12px 24px}.guide-sources li+li{margin-top:7px}.guide-sources a{color:#b3d9f3;overflow-wrap:anywhere}.guide-sources a:hover{text-decoration:underline}.guide-note{color:#97abc7;margin-top:8px;font-size:11px}.post-original-heading{border-bottom:1px solid var(--os-line);max-width:860px;margin:0 auto 26px;padding-bottom:18px}.post-original-heading h2{margin:6px 0 8px;font-size:24px}.post-original-heading a{color:var(--os-cyan);font-size:12px}.post-main :target{outline:1px solid var(--os-cyan);outline-offset:6px;background:#2e9bff0f}.post-attach:target{border-color:var(--os-cyan)}@media (width<=700px){.project-guide{padding:20px 16px}.guide-summary{font-size:15px}.guide-heading h2{font-size:22px}.guide-branches{margin-left:10px;padding-left:22px}.guide-branch-line{width:22px;left:-23px}.guide-part>summary{gap:8px;padding:12px 10px}.guide-part-number{font-size:11px}.guide-part-body{padding:0 12px 14px}.guide-subtopics{margin-left:5px;padding-left:12px}.guide-part-child>summary{flex-wrap:wrap}.guide-part-child .guide-part-state{margin-left:auto}.guide-part-child .guide-branch-line{width:12px;left:-13px}}.post-cover{border:1px solid var(--os-line);clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%);margin-bottom:30px;overflow:hidden}.post-cover img{background:#080d1799;max-width:100%;height:auto;max-height:480px;margin:0 auto;display:block}.forge-content{color:#c9d5e8;word-break:break-word;max-width:860px;margin:0 auto;font-size:15.5px;line-height:1.95}.forge-content>*+*{margin-top:14px}.forge-content h1,.forge-content h2,.forge-content h3,.forge-content h4,.forge-content h5,.forge-content h6{color:var(--os-ink);letter-spacing:.5px;margin-top:34px;line-height:1.4}.forge-content h1{font-size:26px}.forge-content h2{border-bottom:1px solid var(--os-line);padding-bottom:8px;font-size:22px}.forge-content h3{color:var(--os-cyan);font-size:18px}.forge-content h4{font-size:16px}.forge-content h5,.forge-content h6{color:var(--os-ink-dim);font-size:14px}.forge-content h2:before,.forge-content h3:before{content:"// ";color:var(--os-red);font-family:var(--os-font-en)}.forge-content a{color:var(--os-cyan);overflow-wrap:anywhere;border-bottom:1px solid #7fd4ff66}.forge-content a:hover{color:#fff;border-bottom-color:var(--os-red)}.forge-content img{border:1px solid var(--os-line);cursor:zoom-in;background:#080d1780;max-width:100%;height:auto;margin:18px auto;transition:border-color .25s,box-shadow .25s;display:block}.forge-content img:hover{border-color:#7fd4ff99;box-shadow:0 10px 34px #2e9bff2e}.forge-content video{border:1px solid var(--os-line);background:#000;width:100%;max-width:720px;margin:18px auto;display:block}.forge-content iframe{aspect-ratio:16/9;border:1px solid var(--os-line);width:100%;max-width:720px;margin:18px auto;display:block}.forge-content ul,.forge-content ol{padding-left:26px}.forge-content li+li{margin-top:6px}.forge-content strong,.forge-content b{color:var(--os-ink)}.forge-content blockquote{border-left:3px solid var(--os-red);color:var(--os-ink-dim);background:#ff2d4d0d;padding:6px 16px}.forge-content code{color:var(--os-cyan);background:#2e9bff1a;border:1px solid #2e9bff38;padding:1px 6px;font-family:Consolas,Courier New,monospace;font-size:13.5px}.forge-content pre{border:1px solid var(--os-line);border-left:3px solid var(--os-blue);background:#04070ce6;padding:15px 18px;overflow-x:auto}.forge-content pre code{color:#c9d5e8;background:0 0;border:none;padding:0}.forge-content hr{background:var(--os-hairline);border:none;height:1px;margin:26px 0}.forge-content table{border-collapse:collapse;width:100%;margin:18px 0;font-size:13.5px;display:block;overflow-x:auto}.forge-content th,.forge-content td{border:1px solid var(--os-line);text-align:left;vertical-align:top;padding:8px 12px}.forge-content th{color:var(--os-cyan);white-space:nowrap;background:#2e9bff1a}.forge-content tr:nth-child(2n) td{background:#7fd4ff08}.post-block{margin-top:44px}.post-block h2{letter-spacing:2px;margin-bottom:16px;font-size:19px}.post-block h2:before{content:"// ";color:var(--os-red);font-family:var(--os-font-en)}.post-attach-list,.post-ref-list{gap:10px;list-style:none;display:grid}.post-cited{border-top:1px solid var(--os-line);padding-top:26px}.post-cited>summary{cursor:pointer;align-items:baseline;gap:12px;list-style:none;display:flex}.post-cited>summary::-webkit-details-marker{display:none}.post-cited>summary .eyebrow{color:var(--os-ink-faint);font:400 10px var(--os-font-en);letter-spacing:1.6px}.post-cited>summary h2{letter-spacing:2px;margin:0;font-size:19px}.post-cited>summary h2:before{content:none}.post-cited-count{color:var(--os-cyan);font:400 15px var(--os-font-en)}.post-cited-hint{color:var(--os-ink-faint);margin-left:auto;font-size:12px;transition:transform .2s}.post-cited-hint:before{content:"展开 ▾"}.post-cited[open] .post-cited-hint:before{content:"收起 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#72a6c533;gap:8px;margin-top:11px;padding-top:10px;list-style:none;display:grid}.post-cited-chapter{grid-template-columns:minmax(0,1fr) auto;align-items:baseline;gap:12px;display:grid}.post-cited-chapter a{min-width:0}.post-cited-chapter-meta{color:var(--os-ink-faint);font:400 11px var(--os-font-en);letter-spacing:.5px;text-align:right}@media (width<=620px){.post-cited-chapter{grid-template-columns:1fr;gap:3px}.post-cited-chapter-meta{text-align:right}}.post-attach,.post-ref{border:1px solid var(--os-line);border-left:3px solid var(--os-gold);clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);background:#080d17a8;flex-wrap:wrap;align-items:center;gap:14px;padding:12px 16px;display:flex}.post-ref{border-left-color:var(--os-blue)}.post-attach a,.post-ref a{overflow-wrap:anywhere}.post-attach span,.post-ref span{color:var(--os-ink-faint);font:400 10.5px var(--os-font-en);letter-spacing:1px;white-space:nowrap;margin-left:auto}.post-comments{padding:30px 0 60px;position:relative}.post-comments-count{color:var(--os-red);font-family:var(--os-font-en);font-size:.7em}.cmt-list{list-style:none}.cmt{border-bottom:1px dashed #78a0d22e;gap:15px;padding:18px 0;scroll-margin-top:90px;display:flex}.cmt--reply{border-bottom:none;margin-left:44px;padding:14px 0 4px}.cmt-floor{width:44px;color:var(--os-ink-faint);font:400 10px var(--os-font-en);letter-spacing:1px;text-align:right;flex-shrink:0;padding-top:5px}.cmt--reply .cmt-floor{width:34px}.cmt-main{flex:1;min-width:0}.cmt-head{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.cmt-avatar-wrap{flex-shrink:0;width:30px;height:30px;position:relative}.cmt-avatar{object-fit:cover;border:1px solid var(--os-line);background:#2e9bff1f;border-radius:50%;width:100%;height:100%;position:absolute;inset:0}.cmt-avatar.is-broken{display:none}.cmt-avatar-fallback{border:1px solid var(--os-line);width:100%;height:100%;color:var(--os-cyan);background:#2e9bff24;border-radius:50%;justify-content:center;align-items:center;font-size:13px;display:inline-flex}.cmt-author{color:var(--os-ink);font-size:13.5px;font-weight:600}.cmt-reply-to{color:var(--os-blue);font-size:12px}.cmt-time{color:var(--os-ink-faint);font-size:11px}.cmt-body{color:#c0cde2;word-break:break-word;margin-top:7px;font-size:13.5px;line-height:1.85}.cmt-body img{border:1px solid var(--os-line);cursor:zoom-in;max-width:220px;margin-top:8px}.cmt-body blockquote{border-left:3px solid var(--os-blue);color:var(--os-ink-faint);margin:6px 0;padding:4px 12px}.cmt-actions{margin-top:7px}.cmt-like{color:var(--os-gold);font:400 11px var(--os-font-en);letter-spacing:1px}.cmt-empty{color:var(--os-ink-faint);padding:18px 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