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:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--paper:#f5f5f1;--paper-2:#eeede7;--surface:#fff;--ink:#15191e;--ink-2:#454b53;--ink-3:#6b7178;--rule:#e0dfd8;--rule-strong:#c9c8bf;--accent:#1c5cab;--accent-strong:#104281;--accent-soft:#e9f1fb;--accent-tint:#cde2fb;--demo-ink:#7a4d00;--demo-bg:#fff5da;--demo-rule:#e6c56f;--font-sans:var(--font-plex-sans), "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;--font-serif:var(--font-source-serif), "Songti SC", "Noto Serif SC", Georgia, serif;--font-mono:var(--font-plex-mono), ui-monospace, "SF Mono", Menlo, monospace;--radius:3px;--header-h:60px;--page-max:1180px;--gutter:clamp(16px, 4vw, 40px);--shadow-float:0 1px 2px #15191e0f, 0 4px 14px #15191e14}:lang(zh-Hans){--font-serif:var(--font-sans)}*,:before,:after{box-sizing:border-box}html{-moz-text-size-adjust:100%;text-size-adjust:100%}body{background:var(--paper);min-height:100dvh;color:var(--ink);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:16px;line-height:1.55}h1,h2,h3,h4{font-family:var(--font-serif);letter-spacing:-.01em;text-wrap:balance;margin:0;font-weight:560;line-height:1.15}p{text-wrap:pretty;margin:0}a{color:var(--accent);text-underline-offset:.18em;text-decoration-thickness:1px}a:hover{color:var(--accent-strong)}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}img,svg{max-width:100%;display:block}code,kbd,.mono{font-family:var(--font-mono)}.skip-link{z-index:100;background:var(--ink);color:#fff;border-radius:var(--radius);padding:.5rem .8rem;text-decoration:none;position:absolute;top:-48px;left:8px}.skip-link:focus{color:#fff;top:8px}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;overflow:hidden;position:absolute!important}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}
.LanguageSwitcher-module__psbpAa__switcher{align-items:center;font-size:.82rem;display:flex}.LanguageSwitcher-module__psbpAa__option{color:var(--ink-2);white-space:nowrap;border-radius:2px;padding:.3rem .55rem;line-height:1.2;text-decoration:none;position:relative}.LanguageSwitcher-module__psbpAa__option+.LanguageSwitcher-module__psbpAa__option:before{content:"";background:var(--rule-strong);width:1px;position:absolute;top:25%;bottom:25%;left:0}.LanguageSwitcher-module__psbpAa__option:hover{color:var(--accent-strong);background:var(--accent-soft)}.LanguageSwitcher-module__psbpAa__option[aria-current=true]{color:var(--ink);text-decoration:underline;-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent);text-underline-offset:.35em;font-weight:600;text-decoration-thickness:2px}@media (max-width:560px){.LanguageSwitcher-module__psbpAa__option{padding:.3rem .42rem}}
.SiteHeader-module__azVQWW__header{z-index:50;height:var(--header-h);background:var(--surface);border-bottom:1px solid var(--rule-strong);position:sticky;top:0}.SiteHeader-module__azVQWW__inner{height:100%;padding:0 var(--gutter);align-items:center;gap:1.5rem;display:flex}.SiteHeader-module__azVQWW__brand{color:var(--ink);flex:none;align-items:center;gap:.65rem;text-decoration:none;display:flex}.SiteHeader-module__azVQWW__brand:hover{color:var(--ink)}.SiteHeader-module__azVQWW__mark{flex:none;width:28px;height:28px}.SiteHeader-module__azVQWW__brandText{line-height:1.1;display:grid}.SiteHeader-module__azVQWW__brandKicker{color:var(--accent);letter-spacing:.1em;text-transform:uppercase;font-size:.66rem;font-weight:600}.SiteHeader-module__azVQWW__brandName{font-family:var(--font-serif);letter-spacing:-.005em;font-size:1.02rem;font-weight:600}.SiteHeader-module__azVQWW__nav{flex:1}.SiteHeader-module__azVQWW__nav ul{gap:.25rem;margin:0;padding:0;list-style:none;display:flex}.SiteHeader-module__azVQWW__nav a{color:var(--ink-2);border-radius:2px;padding:.45rem .7rem;font-size:.9rem;font-weight:500;text-decoration:none;display:block}.SiteHeader-module__azVQWW__nav a:hover{color:var(--ink);background:var(--paper)}.SiteHeader-module__azVQWW__nav a[aria-current=page]{color:var(--accent-strong);box-shadow:inset 0 -2px 0 var(--accent);border-radius:0}.SiteHeader-module__azVQWW__tools{align-items:center;gap:.5rem;margin-left:auto;display:flex}.SiteHeader-module__azVQWW__menuButton{border:1px solid var(--rule-strong);border-radius:var(--radius);background:var(--surface);cursor:pointer;place-items:center;width:38px;height:38px;padding:0;display:none}.SiteHeader-module__azVQWW__menuButton svg{fill:none;width:16px;height:16px;stroke:var(--ink);stroke-width:1.5px;stroke-linecap:round}@media (max-width:899px){.SiteHeader-module__azVQWW__inner{gap:.75rem}.SiteHeader-module__azVQWW__menuButton{display:grid}.SiteHeader-module__azVQWW__nav{top:var(--header-h);background:var(--surface);border-bottom:1px solid var(--rule-strong);display:none;position:absolute;left:0;right:0;box-shadow:0 8px 20px #15191e1a}.SiteHeader-module__azVQWW__nav[data-open=true]{display:block}.SiteHeader-module__azVQWW__nav ul{flex-direction:column;gap:0;padding:.4rem 0}.SiteHeader-module__azVQWW__nav a{padding:.8rem var(--gutter);font-size:1rem}.SiteHeader-module__azVQWW__nav a[aria-current=page]{box-shadow:inset 3px 0 0 var(--accent)}}@media (max-width:560px){.SiteHeader-module__azVQWW__brandKicker{display:none}.SiteHeader-module__azVQWW__brandName{max-width:9.5rem;font-size:.9rem;line-height:1.12}}