@font-face{font-family:Alibaba PuHuiTi;src:url(/assets/alibaba-puhuiti-45-light-fb6ObiNA.woff2) format("woff2");font-weight:100 400;font-style:normal;font-display:swap}@font-face{font-family:Alibaba PuHuiTi;src:url(/assets/alibaba-puhuiti-65-medium-CzWy5N7c.woff2) format("woff2");font-weight:500 900;font-style:normal;font-display:swap}:root{--paper: #f3eee4;--paper-deep: #ebe4d4;--card: #faf6ee;--ink: #2b261f;--ink-soft: #5c564c;--muted: #7a7366;--rule: #d8ceba;--moss: #3d5a45;--moss-soft: #dce6dc;--clay: #8d5a3c;--gold: #b08958;--shadow: 0 18px 40px rgba(60, 48, 28, .08);--font-serif: "Alibaba PuHuiTi", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;--font-sans: "Alibaba PuHuiTi", "PingFang SC", "Hiragino Sans GB", "MiSans", "HarmonyOS Sans", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "SF Mono", "Menlo", "Sarasa Mono SC", ui-monospace, monospace;--header-h: 64px;--rail: 232px;color-scheme:light}[data-theme=dark]{--paper: #161512;--paper-deep: #1e1c18;--card: #221f1a;--ink: #eee6d6;--ink-soft: #c8c0b0;--muted: #9a9284;--rule: #3a362e;--moss: #8fbc98;--moss-soft: #2a332b;--clay: #d4a07a;--gold: #d2b07a;--shadow: 0 18px 40px rgba(0, 0, 0, .28);color-scheme:dark}*{box-sizing:border-box}html,body,#root{min-height:100%}html{scroll-behavior:smooth;-webkit-tap-highlight-color:transparent}body{margin:0;color:var(--ink);background:radial-gradient(ellipse at 12% -10%,rgba(176,137,88,.09),transparent 46%),radial-gradient(ellipse at 100% 110%,rgba(61,90,69,.08),transparent 42%),var(--paper);font-family:var(--font-sans);line-height:1.7}a{color:var(--moss);text-decoration-thickness:1px;text-underline-offset:.22em}a:hover,a:active{color:var(--clay)}button,input{font:inherit}button{background:none;border:0;color:inherit;cursor:pointer;padding:0}img{max-width:100%}.shell{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);min-height:100vh}.rail{position:sticky;top:0;height:100vh;padding:28px 22px 24px;border-right:1px solid var(--rule);background:color-mix(in srgb,var(--paper-deep) 72%,transparent);overflow:auto}.brand{display:block;color:inherit;text-decoration:none}.brand-mark{font-family:var(--font-serif);font-size:1.55rem;letter-spacing:.08em}.brand-sub{margin-top:4px;color:var(--muted);font-size:.78rem}.rail-nav{display:grid;gap:4px;margin-top:28px}.rail-link{display:flex;align-items:baseline;justify-content:space-between;gap:8px;padding:8px 10px;border-radius:10px;color:var(--ink-soft);text-decoration:none}.rail-link:hover,.rail-link.active{background:var(--moss-soft);color:var(--ink)}.rail-link:active{background:color-mix(in srgb,var(--moss) 20%,var(--moss-soft));color:var(--ink)}.rail-link .num{color:var(--gold);font-family:var(--font-serif);font-size:.75rem}.rail-link .count{color:var(--muted);font-size:.75rem}.rail-foot{margin-top:32px;color:var(--muted);font-size:.78rem}.main-col{min-width:0}.topbar{position:sticky;top:0;z-index:8;display:flex;align-items:center;justify-content:space-between;gap:12px;height:var(--header-h);padding:0 28px;border-bottom:1px solid var(--rule);background:color-mix(in srgb,var(--paper) 86%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.crumb{color:var(--muted);font-size:.88rem}.topbar .crumb{min-width:0;flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.crumb a{color:inherit;text-decoration:none}.crumb a:hover{color:var(--moss)}.crumb-current{color:var(--ink)}.top-actions{display:flex;align-items:center;gap:8px}.icon-btn,.search-open{display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:0 12px;border:1px solid var(--rule);border-radius:999px;background:var(--card);color:var(--ink-soft)}.icon-btn{width:36px;justify-content:center;padding:0}.search-open:hover,.icon-btn:hover{border-color:var(--gold);color:var(--ink)}.search-open:active,.icon-btn:active{border-color:var(--gold);background:var(--moss-soft);color:var(--ink)}.menu-btn,.search-glyph,.rail-mask,.home-link{display:none}.menu-bars{display:block;width:14px;height:10px;background:linear-gradient(var(--ink-soft),var(--ink-soft)) 0 0 / 100% 1.5px no-repeat,linear-gradient(var(--ink-soft),var(--ink-soft)) 0 50% / 100% 1.5px no-repeat,linear-gradient(var(--ink-soft),var(--ink-soft)) 0 100% / 100% 1.5px no-repeat}.kbd{padding:1px 6px;border:1px solid var(--rule);border-radius:6px;font-size:.72rem;color:var(--muted)}.page{width:min(1080px,calc(100% - 56px));margin:0 auto;padding:36px 0 80px}.hero{padding:12px 0 8px}.eyebrow{color:var(--gold);font-size:.82rem;letter-spacing:.18em}.hero h1,.section-head h1,.note-title{margin:10px 0 0;font-family:var(--font-serif);font-size:clamp(2.1rem,5vw,3.4rem);font-weight:600;line-height:1.25;letter-spacing:.04em}.lede{max-width:38rem;margin:16px 0 0;color:var(--ink-soft);font-size:1.05rem}.hero .lede{max-width:none}.hero-quote{max-width:36rem;margin:28px 0 0;padding:4px 0 4px 18px;border-left:2px solid var(--gold);font-family:var(--font-serif);font-size:1.2rem;line-height:1.8}.stats{display:flex;flex-wrap:wrap;gap:18px 28px;margin-top:28px;color:var(--muted);font-size:.9rem}.stats strong{color:var(--ink);font-weight:600}.text-btn{color:var(--moss);text-decoration:underline;text-underline-offset:.22em}.text-btn:active{color:var(--clay)}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.section-block{margin-top:48px}.section-block h2,.group-title{margin:0 0 16px;font-family:var(--font-serif);font-size:1.35rem;font-weight:600}.section-card{display:block;padding:20px 20px 18px;border:1px solid var(--rule);border-radius:16px;background:var(--card);color:inherit;text-decoration:none;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}.section-card:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--moss) 40%,var(--rule));box-shadow:var(--shadow);color:inherit}.section-card:active{transform:scale(.985);border-color:color-mix(in srgb,var(--moss) 40%,var(--rule));background:color-mix(in srgb,var(--moss-soft) 55%,var(--card));box-shadow:none;color:inherit}.section-card-top{display:flex;justify-content:space-between;color:var(--gold);font-family:var(--font-serif);font-size:.85rem}.section-card h3{margin:10px 0 6px;font-family:var(--font-serif);font-size:1.35rem;font-weight:600}.section-card p{margin:0;color:var(--muted);font-size:.92rem}.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}.tag-cloud .pill{padding:4px 12px}.tag-cloud .count{color:var(--muted)}.note-card{display:block;padding:16px 0;border-bottom:1px solid var(--rule);color:inherit;text-decoration:none;transition:opacity .12s ease}.note-card:hover{color:inherit}.note-card:hover h3{color:var(--moss)}.note-card:active{opacity:.55}.note-card:active h3{color:var(--moss)}.note-card h3{margin:0 0 6px;font-family:var(--font-serif);font-size:1.2rem;font-weight:600}.note-card p{margin:0;color:var(--ink-soft);font-size:.94rem}.meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin-bottom:8px;color:var(--muted);font-size:.8rem}.pill,.status{display:inline-flex;align-items:center;padding:1px 8px;border-radius:999px;background:var(--moss-soft);color:var(--moss);text-decoration:none}.pill:active{background:color-mix(in srgb,var(--moss) 24%,var(--moss-soft))}.status.seedling{background:#efe6c8;color:#7a5b16}.status.budding{background:var(--moss-soft);color:var(--moss)}.status.evergreen{background:#dce8f2;color:#35586f}[data-theme=dark] .status.seedling{background:#3a3218;color:#e6c56a}[data-theme=dark] .status.evergreen{background:#1d2c36;color:#9cc4db}.section-head{margin-bottom:28px}.note-layout{display:grid;grid-template-columns:minmax(0,1fr) 180px;gap:48px;align-items:start}.article{min-width:0}.note-title{font-size:clamp(1.8rem,4vw,2.6rem)}.toc{position:sticky;top:calc(var(--header-h) + 24px);padding-left:14px;border-left:1px solid var(--rule)}.toc-title{margin:0 0 10px;color:var(--muted);font-size:.75rem;letter-spacing:.12em}.toc a{display:block;margin:6px 0;color:var(--ink-soft);font-size:.82rem;text-decoration:none}.toc a:hover,.toc a.active{color:var(--moss)}.toc .h3{padding-left:12px}.sources{margin-top:40px;padding-top:18px;border-top:1px solid var(--rule);color:var(--ink-soft);font-size:.92rem}.note-end{margin-top:48px;padding-top:20px;border-top:1px solid var(--rule)}.note-end a{font-family:var(--font-serif);color:var(--ink-soft);text-decoration:none}.note-end a:hover{color:var(--moss)}.sources+.note-end{margin-top:28px}.empty{padding:48px 8px;color:var(--muted);text-align:center}.search-mask{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;display:grid;align-items:start;justify-items:center;padding:12vh 16px 16px;background:#1c181247;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.search-box{width:min(640px,100%);overflow:hidden;border:1px solid var(--rule);border-radius:18px;background:var(--card);box-shadow:var(--shadow)}.search-box input{width:100%;padding:18px 20px;border:0;background:transparent;color:var(--ink);outline:none}.search-list{max-height:52vh;overflow:auto;padding:8px;border-top:1px solid var(--rule)}.search-item{display:block;width:100%;padding:10px 12px;border-radius:10px;text-align:left}.search-item.active,.search-item:hover{background:var(--moss-soft)}.search-item:active{background:color-mix(in srgb,var(--moss) 20%,var(--moss-soft))}.search-item strong{display:block;font-family:var(--font-serif);font-weight:600}.search-item span{color:var(--muted);font-size:.8rem}@media(max-width:960px){.shell{grid-template-columns:1fr}.menu-btn{display:inline-flex}.home-link{display:flex}.rail-mask{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:22;border:0;border-radius:0;background:#1c181247;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.rail-mask.is-open{display:block}.rail{position:fixed;top:0;left:0;z-index:24;display:flex;flex-direction:column;width:min(var(--rail),86vw);height:100dvh;padding-top:max(28px,env(safe-area-inset-top));padding-right:22px;padding-bottom:max(24px,env(safe-area-inset-bottom));padding-left:max(22px,env(safe-area-inset-left));overflow:auto;overscroll-behavior:contain;background:var(--paper-deep);transform:translate(-105%);transition:transform .22s ease}.rail.is-open{transform:translate(0);box-shadow:var(--shadow)}.note-layout{grid-template-columns:1fr}.toc{display:none}.page{width:min(100% - 32px,1080px)}.topbar{padding:0 max(16px,env(safe-area-inset-right)) 0 max(16px,env(safe-area-inset-left));height:var(--header-h)}.search-open{width:36px;justify-content:center;padding:0}.search-open .label,.search-open .kbd{display:none}.search-glyph{display:inline}}@media(max-width:960px)and (display-mode:standalone),(max-width:960px)and (display-mode:fullscreen){.topbar{padding-top:env(safe-area-inset-top);height:calc(var(--header-h) + env(safe-area-inset-top))}}@media(max-width:720px){.grid{grid-template-columns:1fr}html{font-size:118.75%}body{font-size:.94rem}.brand-mark{font-size:1.28rem}.brand-sub,.rail-foot{font-size:.72rem}.rail-link{font-size:.92rem}.crumb{font-size:.8rem}.hero h1,.section-head h1{font-size:1.4rem}.note-title{font-size:1.28rem}.lede{font-size:.9rem}.hero-quote{font-size:1.02rem}.stats{font-size:.8rem}.section-block h2,.group-title,.section-card h3{font-size:1.12rem}.section-card p{font-size:.84rem}.note-card h3{font-size:1.02rem}.note-card p{font-size:.86rem}.page{width:calc(100% - 32px);padding:24px 0 max(72px,calc(32px + env(safe-area-inset-bottom)))}.article>.crumb,.section-head .crumb{display:none}.section-block{margin-top:36px}.search-mask{align-items:start;padding:max(12px,env(safe-area-inset-top)) 12px 12px}.search-box{border-radius:14px}.search-box input{font-size:1rem;padding:14px 16px}.icon-btn,.search-open,.rail-link{min-height:44px}.icon-btn,.search-open{width:44px}.prose table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}}@media(hover:none){.section-card:hover{transform:none;box-shadow:none}}body.nav-open{overflow:hidden}@media print{.rail,.topbar,.toc,.rail-mask,.menu-btn,.note-end{display:none!important}.shell{display:block}body{background:#fff}.page{width:auto;padding:0}}.prose{max-width:40rem;font-family:var(--font-serif);font-size:1.08rem;line-height:1.95;letter-spacing:.02em;font-synthesis:none;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:color-mix(in srgb,var(--ink) 82%,var(--ink-soft))}.prose>*:first-child{margin-top:0}.prose h1,.prose h2,.prose h3,.prose h4{font-weight:600;line-height:1.4;letter-spacing:.03em}.prose h2{margin:2.2rem 0 .8rem;font-size:1.45rem}.prose h3{margin:1.7rem 0 .6rem;font-size:1.18rem}.prose p{margin:.95rem 0}.prose strong,.prose b{font-weight:700}.prose blockquote{margin:1.4rem 0;padding:.15rem 0 .15rem 1rem;border-left:2px solid var(--gold);color:var(--ink-soft)}.prose li{margin:.28rem 0}.prose ul,.prose ol{padding-left:1.3rem}.prose hr{border:0;height:1px;margin:2.4rem 0;background:linear-gradient(90deg,transparent,var(--rule),transparent)}.prose img{display:block;margin:1.4rem auto;border:1px solid var(--rule);border-radius:12px;background:var(--card)}.prose code{padding:.1em .35em;border-radius:6px;background:var(--paper-deep);font-family:var(--font-mono);font-size:.86em}.prose pre{overflow:auto;padding:16px 18px;border:1px solid var(--rule);border-radius:12px;background:var(--paper-deep)}.prose pre code{padding:0;background:none;font-size:.84rem;line-height:1.65}.prose table{width:100%;margin:1.2rem 0;border-collapse:collapse;font-family:var(--font-sans);font-size:.92rem}.prose th,.prose td{padding:8px 10px;border-bottom:1px solid var(--rule);text-align:left}.prose .contains-task-list{list-style:none;padding-left:0}.prose .task-list-item{display:flex;align-items:flex-start;gap:8px}.prose .task-list-item input{margin-top:.55em}@media(max-width:720px){.prose{max-width:none;font-size:.92rem;line-height:1.8}.prose h2{font-size:1.15rem}.prose h3{font-size:1.02rem}.prose pre{padding:14px;border-radius:10px}.prose pre code{font-size:.78rem}}.hljs-keyword,.hljs-selector-tag,.hljs-built_in{color:var(--moss)}.hljs-string,.hljs-attr{color:var(--clay)}.hljs-number,.hljs-literal{color:var(--gold)}.hljs-comment{color:var(--muted)}