:root{--bg: #ffffff;--bg-subtle: #fafafa;--text: #3a3a3a;--text-muted: #737373;--border: rgba(0, 0, 0, .07);--accent: #3b82f6;--accent-hover: #2563eb;--width-prose: 640px;--width-home: 880px;--category-col-width: 10.5rem;--category-col-gap: 4rem;--category-row-gap: 5rem;--space-section: 3.5rem;--text-base: 1rem;--text-small: .875rem;--leading-base: 1.75;--leading-small: 1.43}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-size:var(--text-base);line-height:var(--leading-base);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body.lang-en{font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;font-feature-settings:"kern","liga"}body.lang-zh{font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;letter-spacing:0;font-feature-settings:"kern"}a{color:var(--text);text-decoration:underline;text-decoration-color:var(--border);text-underline-offset:3px;transition:color .15s ease,text-decoration-color .15s ease}a:hover{color:var(--accent);text-decoration-color:var(--accent)}.page{max-width:var(--width-prose);margin:0 auto;padding:64px 20px 72px}.page--wide{max-width:var(--width-home)}.site-header{display:flex;justify-content:flex-end;margin-bottom:2.5rem}.lang-switch{font-size:var(--text-small);line-height:var(--leading-small);color:var(--text-muted)}.lang-switch a{text-decoration:none}.lang-switch a:hover{color:var(--accent)}.lang-switch .active{font-weight:500;color:var(--accent)}.lang-switch .sep{margin:0 .35em;color:var(--border);user-select:none}.hero-name{margin:0 0 1.75rem;font-size:inherit;font-weight:500;line-height:var(--leading-base);letter-spacing:0;color:var(--text)}.hero-tagline{margin:0 0 1.75rem;font-size:inherit;font-weight:400;line-height:var(--leading-base)}.hero-tagline em{font-family:Newsreader,Times New Roman,Times,serif;font-style:italic;font-weight:400;font-size:1.2em;letter-spacing:.015em;font-feature-settings:"kern","liga";color:var(--text);font-synthesis:none}.hero-bullets{margin:0 0 var(--space-section);padding-left:1.125rem;color:var(--text)}.hero-bullets li{margin-bottom:1.75rem;padding-left:.125rem}.hero-bullets li:last-child{margin-bottom:0}body.lang-zh .hero-bullets{padding-left:1.25rem;list-style-type:disc}body.lang-zh .hero-bullets li::marker{color:var(--text-muted)}.section{margin-bottom:var(--space-section)}.categories-grid{display:grid;grid-template-columns:repeat(3,var(--category-col-width));column-gap:var(--category-col-gap);row-gap:var(--category-row-gap);justify-content:space-between;width:100%;margin-bottom:var(--space-section);align-items:start}.category-column{min-width:0;max-width:var(--category-col-width)}.category-body{margin-top:.25rem}.link-row--compact{margin-bottom:1rem}.link-row--compact .link-row-title{font-size:var(--text-small);line-height:var(--leading-small)}.link-row--compact .link-row-meta{font-size:.8125rem}.category-body .link-row-title--ruled{margin-bottom:.35rem}.category-body .link-row-title--ruled a{display:inline-block;text-decoration:none;color:var(--text);padding-bottom:.35rem;border-bottom:1px solid var(--text)}.category-body .link-row-title--ruled a:hover{color:var(--accent);border-bottom-color:var(--accent)}.link-row-title--ruled a{display:inline-block;text-decoration:none;color:var(--text);padding-bottom:.35rem;border-bottom:1px solid var(--text)}.link-row-title--ruled a:hover{color:var(--accent);border-bottom-color:var(--accent)}.category-column .section-more{margin-top:.5rem}@media (max-width: 720px){.categories-grid{--category-row-gap: 3.5rem;grid-template-columns:repeat(2,var(--category-col-width));justify-content:space-between}}@media (max-width: 480px){.categories-grid{grid-template-columns:1fr;justify-content:stretch;row-gap:2.5rem}.category-column{max-width:none}}.section-title{margin:0 0 .5rem;font-size:var(--text-small);line-height:var(--leading-small);font-weight:500;letter-spacing:0;text-transform:none;color:var(--text-muted)}.section-title a{text-decoration:none;color:inherit}.section-title a:hover{color:var(--accent)}.section-status{margin:0;font-size:inherit;line-height:var(--leading-base);color:var(--text-muted)}.contact-list{margin:0;padding:0;list-style:none}.contact-list li{margin-bottom:.5rem}.contact-list li:last-child{margin-bottom:0}.site-footer{margin-top:var(--space-section);padding-top:1.5rem;border-top:1px solid var(--border);font-size:var(--text-small);line-height:var(--leading-small);color:var(--text-muted)}.subpage-back{margin-bottom:2rem;font-size:var(--text-small);line-height:var(--leading-small)}.subpage-back a{text-decoration:none;color:var(--text-muted)}.subpage-back a:hover{color:var(--accent)}.subpage-title{margin:0 0 .75rem;font-size:inherit;font-weight:500;line-height:var(--leading-base)}.subpage-status{margin:0;color:var(--text-muted)}.link-row{margin-bottom:1.25rem}.link-row:last-child{margin-bottom:0}.link-row-title{margin:0;font-size:inherit;font-weight:400;line-height:var(--leading-base)}.link-row-title a{text-decoration:none;color:var(--text)}.link-row-title a:hover{color:var(--accent)}.link-row-meta{margin:.25rem 0 0;font-size:var(--text-small);line-height:var(--leading-small);color:var(--text-muted)}.link-row-desc{margin:.35rem 0 0;font-size:inherit;line-height:var(--leading-base);color:var(--text-muted)}.section-more{margin:.75rem 0 0;font-size:var(--text-small)}.section-more a{text-decoration:none;color:var(--text-muted)}.section-more a:hover{color:var(--accent)}.article-header{margin-bottom:2.5rem}.article-meta{margin:0 0 1rem;font-size:var(--text-small);line-height:var(--leading-small);color:var(--text-muted)}.article-meta-sep{margin:0 .35em}.article-title{margin:0 0 1rem;font-size:inherit;font-weight:500;line-height:var(--leading-base);color:var(--text)}.article-description{margin:0;font-size:inherit;line-height:var(--leading-base);color:var(--text-muted)}.prose{color:var(--text)}.prose>:first-child{margin-top:0}.prose h2{margin:2.5rem 0 1rem;font-size:inherit;font-weight:500;line-height:var(--leading-base);color:var(--text)}.prose h2:first-child{margin-top:0}.prose p{margin:0 0 1.75rem}.prose ul,.prose ol{margin:0 0 1.75rem;padding-left:1.25rem}.prose li{margin-bottom:.5rem}.prose li:last-child{margin-bottom:0}.prose table{width:100%;margin:0 0 1.75rem;border-collapse:collapse;font-size:var(--text-small);line-height:var(--leading-small)}.prose th,.prose td{padding:.5rem .75rem;border-bottom:1px solid var(--border);text-align:left}.prose th{font-weight:500;color:var(--text-muted)}.prose hr{margin:2rem 0;border:none;border-top:1px solid var(--border)}.prose strong{font-weight:500}.prose a{color:var(--text)}.prose img{max-width:100%;height:auto;margin:1.5rem 0;border-radius:4px}