:root{--color-bg:#fff;--color-surface:#fff;--color-border:#e3e3e3;--color-text:#171717;--color-muted:#666;--color-accent:#171717;--color-accent-soft:#f2f2f2;--color-callout:#f7f7f7;--color-quote:#f8f8f8;--color-inverse:#fff;--shadow-soft:0 10px 30px #1717170a;--radius-sm:8px;--radius-md:14px;--radius-lg:24px;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--space-8:4rem;--site-width:1440px;--page-gutter:64px;--content-width:760px;--content-gutter:64px;--font-sans:"Times New Roman Local", "Times New Roman", Times, serif;--font-mono:"SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--font-times:"Times New Roman Local", "Times New Roman", Times, serif;--font-source-serif-sc:"Source Han Serif SC Local", "SimSun Local", "SimSun", serif;--font-source-sans-sc:"Source Han Sans SC Local", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}:root[data-theme=dark]{--color-bg:#111314;--color-surface:#171a1c;--color-border:#31373a;--color-text:#f2efe9;--color-muted:#aaa49a;--color-accent:#f6f1e8;--color-accent-soft:#202427;--color-callout:#1d2123;--color-quote:#1b1f21;--color-inverse:#171717;--shadow-soft:0 14px 36px #00000057}
@font-face{font-family:Source Han Serif SC Local;src:url(/font/SourceHanSerifSC-VF.woff2)format("woff2");font-weight:200 900;font-style:normal;font-display:swap}@font-face{font-family:Source Han Sans SC Local;src:url(/font/SourceHanSansSC-Regular.woff2)format("woff2");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Source Han Sans SC Local;src:url(/font/SourceHanSansSC-Bold.woff2)format("woff2");font-weight:700;font-style:normal;font-display:swap}@font-face{font-family:Times New Roman Local;src:url("/font/Times New Roman.woff2")format("woff2");font-weight:400 700;font-style:normal;font-display:swap}@font-face{font-family:SimSun Local;src:url(/font/SimSun.woff2)format("woff2");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:KaiTi GB2312 Local;src:url(/font/KaiTi_GB2312.woff2)format("woff2");font-weight:400;font-style:normal;font-display:swap}*,:before,:after{box-sizing:border-box}html{background:var(--color-bg);color:var(--color-text);margin:0;padding:0}body{min-height:100vh;font-family:var(--font-sans);margin:0;line-height:1.65}a{color:inherit;-webkit-text-decoration-color:var(--color-border);text-decoration-color:var(--color-border);text-underline-offset:.2em}img{max-width:100%;display:block}button,input,textarea,select{font:inherit}
.site-shell{min-height:100vh}.site-container{width:calc(100% - (var(--page-gutter) * 2));max-width:var(--site-width);margin:0 auto}.content-container{width:calc(100% - (var(--content-gutter) * 2));max-width:var(--content-width);margin:0 auto}.section-stack{gap:var(--space-7);display:grid}
.prose{color:var(--color-text);font-size:19px;line-height:1.9}.prose>*+*{margin-top:1.32em}.prose p,.prose li{color:var(--color-text);margin-top:1.32em;margin-bottom:1.32em}.prose h2,.prose h3{margin-top:0;margin-bottom:0}.prose ul,.prose ol,.prose blockquote,.prose pre,.prose figure,.prose hr{margin-top:1.1em;margin-bottom:1.1em}.prose ul,.prose ol{padding-left:1.35em}.prose li+li{margin-top:.4em}.prose a{color:inherit;-webkit-text-decoration-color:color-mix(in srgb, var(--color-text) 18%, transparent);text-decoration-color:color-mix(in srgb, var(--color-text) 18%, transparent);text-underline-offset:.18em;text-decoration-thickness:1px}.prose a:hover{-webkit-text-decoration-color:var(--color-text);text-decoration-color:var(--color-text)}.prose hr{border:0;border-top:1px solid color-mix(in srgb, var(--color-text) 18%, transparent);width:min(64px,16%);margin:3.2em auto}.prose iframe{border:0;width:100%}.prose img{max-width:100%;height:auto}.prose figure{max-width:100%}.prose figcaption{font-family:var(--font-source-sans-sc);color:var(--color-muted);margin-top:13.6px;font-size:13px;line-height:1.6}@media (max-width:825px){.prose{font-size:18px}.prose hr{margin:2.8em auto}}