@font-face{font-family:IBM Plex Sans SC;src:url(../media/IBMPlexSansSC-Regular.1b9nqzb3s9ftk.otf)format("opentype");font-weight:400;font-display:swap}@font-face{font-family:IBM Plex Sans SC;src:url(../media/IBMPlexSansSC-SemiBold.28g9gu7b3sq5a.otf)format("opentype");font-weight:600;font-display:swap}@font-face{font-family:IBM Plex Sans SC;src:url(../media/IBMPlexSansSC-Bold.14a5ct77zu-dw.otf)format("opentype");font-weight:700;font-display:swap}:root{--paper:#f5f4ef;--ink:#171715;--muted:#62615c;--line:#cbc9c1;--accent:#f60;--panel:#eceae3;--figure:#e6e2d7;--chrome-bg:#f5f4ef;--chrome-text:#171715;--chrome-muted:#62615c;--chrome-line:#cbc9c1;--max:1260px;--ease-out:cubic-bezier(.22, 1, .36, 1);--ease-standard:cubic-bezier(.4, 0, .2, 1);color:var(--ink);background:var(--paper);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:Noto Serif,Georgia,serif}html[data-theme=dark]{--paper:#151514;--ink:#f4f2ec;--muted:#aaa8a2;--line:#3a3a36;--figure:#232321;--accent:#f60;--panel:#201f1d;--chrome-bg:#151514;--chrome-text:#f4f2ec;--chrome-muted:#aaa8a2;--chrome-line:#3a3a36;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}html[lang=zh-CN]{font-family:IBM Plex Sans SC,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}html.login-overlay-open{overflow:hidden}body{background:var(--paper);min-width:320px;margin:0}.site-main{animation:page-enter .62s var(--ease-out) both}@keyframes page-enter{0%{opacity:0;transform:translateY(9px)}}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.site-header{z-index:50;width:100%;color:var(--chrome-text);background:color-mix(in srgb, var(--paper) 76%, transparent);border-bottom:1px solid color-mix(in srgb, var(--line) 42%, transparent);-webkit-backdrop-filter:blur(20px)saturate(118%);transition:background-color .32s var(--ease-standard), border-color .32s var(--ease-standard);position:sticky;top:0}.header-main{border-bottom:0}.header-inner{grid-template-columns:1fr auto 1fr;align-items:center;gap:32px;width:min(1320px,100% - 96px);height:64px;margin:auto;display:grid}.wordmark{letter-spacing:-.035em;justify-self:start;font-family:Noto Serif,Georgia,serif;font-size:1.02rem;font-weight:500;line-height:1}.header-inner nav{color:var(--chrome-muted);justify-self:center;align-items:center;gap:30px;font-family:Noto Serif,Georgia,serif;font-size:1rem;font-weight:400;line-height:1;display:flex}.header-inner nav a{color:var(--chrome-muted);transition:color .22s var(--ease-standard), opacity .22s var(--ease-standard)}.header-inner nav a.active,.header-inner nav a:hover,.header-sub a:hover{color:var(--chrome-text);opacity:1}.header-inner nav a.active{font-weight:600}.account-area{justify-self:end;align-items:center;gap:13px;display:flex}.account-control{position:relative}.account-login,.account-trigger{color:var(--chrome-text);cursor:pointer;background:0 0;border:0;align-items:center;gap:7px;padding:0;font-family:Noto Serif,Georgia,serif;font-size:.94rem;font-weight:500;line-height:1;display:inline-flex}.account-login[hidden],.account-trigger[hidden],.account-menu[hidden]{display:none}.account-avatar{width:17px;height:17px;color:var(--paper);background:var(--muted);border-radius:50%;flex:none;place-items:center;font:600 .62rem/1 Arial,sans-serif;display:inline-grid;overflow:hidden}.account-avatar-placeholder{color:var(--chrome-text);background:0 0;border-radius:0}.account-login svg,.account-avatar img{width:17px;height:17px}.account-avatar img{object-fit:cover;display:block}.account-login svg,.account-menu svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round}.account-chevron{fill:none;stroke:currentColor;stroke-width:1.4px;width:13px;height:13px;transition:transform .16s}.account-trigger[aria-expanded=true] .account-chevron{transform:rotate(180deg)}.account-menu{z-index:70;width:250px;color:var(--ink);background:color-mix(in srgb, var(--paper) 92%, transparent);border:1px solid color-mix(in srgb, var(--line) 72%, transparent);-webkit-backdrop-filter:blur(22px)saturate(120%);border-radius:12px;position:absolute;top:calc(100% + 16px);right:0;overflow:hidden;box-shadow:0 18px 46px #0000002e}.account-menu-greeting{border-bottom:1px solid var(--line);grid-template-columns:36px 1fr;align-items:center;gap:12px;padding:18px;display:grid}.account-avatar-large{width:36px;height:36px;font-size:.82rem}.account-avatar-large img{width:36px;height:36px}.account-menu-greeting div{min-width:0}.account-menu-greeting strong,.account-menu-greeting span{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.account-menu-greeting strong{font-size:.95rem}.account-menu-greeting span{color:var(--muted);margin-top:4px;font:400 .72rem/1.2 Arial,sans-serif}.account-menu>a{align-items:center;gap:12px;min-height:48px;padding:0 18px;font-size:.9rem;display:flex}.account-menu>a:hover{background:var(--panel)}.account-menu>a svg{width:18px;height:18px}.account-menu>.account-logout{color:var(--accent);border-top:1px solid var(--line)}.language-switch{color:var(--chrome-muted);align-items:center;gap:8px;font-family:Noto Serif,Georgia,serif;font-size:.78rem;font-weight:700;line-height:1;display:flex}.language-switch a{color:var(--chrome-muted)}.language-switch a.active{color:var(--chrome-text)}.theme-toggle{width:32px;height:32px;color:var(--chrome-muted);border:1px solid var(--chrome-line);cursor:pointer;background:0 0;border-radius:50%;place-items:center;padding:7px;display:grid}.theme-toggle:hover{color:var(--chrome-text);border-color:var(--chrome-muted)}.theme-icon{fill:none;stroke:currentColor;stroke-width:1.4px;stroke-linecap:round;stroke-linejoin:round;width:16px;height:16px}.theme-icon-moon{fill:currentColor;stroke:none}.theme-icon-sun,html[data-theme=dark] .theme-icon-moon{display:none}html[data-theme=dark] .theme-icon-sun{display:block}.home-hero{border-bottom:1px solid var(--line);grid-template-columns:minmax(260px,.72fr) minmax(0,1.28fr);gap:clamp(60px,9vw,140px);min-height:610px;padding:clamp(96px,11vh,132px) 0 108px;display:grid}.hero-copy{flex-direction:column;justify-content:space-between;min-height:380px;display:flex}.home-hero h1{letter-spacing:-.025em;margin:0;font:600 clamp(1.15rem,1.45vw,1.4rem)/1.1 Noto Serif,Georgia,serif}.home-hero p{max-width:390px;color:var(--muted);margin:0;font-size:clamp(1.05rem,1.35vw,1.28rem);line-height:1.62}.hero-category-list{flex-direction:column;align-self:center;align-items:flex-start;min-width:0;display:flex}.hero-category-list a{color:var(--ink);letter-spacing:-.055em;transition:color .3s var(--ease-standard), opacity .3s var(--ease-standard);align-items:baseline;gap:.22em;font:400 clamp(3.8rem,5.9vw,6rem)/1 Noto Serif,Georgia,serif;display:inline-flex}.hero-category-list a span:last-child{color:currentColor;opacity:.48;transition:color .3s var(--ease-standard), opacity .3s var(--ease-standard), transform .42s var(--ease-out);font-size:.48em;transform:translate(0)}.hero-category-list:has(a:hover) a:not(:hover){color:var(--muted);opacity:.34}.hero-category-list a:hover span:last-child{color:var(--accent);opacity:1;transform:translate(7px)}.login-page{background:color-mix(in srgb, var(--paper) 94%, #000 6%);place-items:center;min-height:calc(100vh - 64px);padding:72px 24px 110px;display:grid}.login-overlay{z-index:200;background:color-mix(in srgb, var(--paper) 58%, transparent);-webkit-backdrop-filter:blur(24px)saturate(72%);animation:login-backdrop-enter .3s var(--ease-standard) both;place-items:center;padding:32px;display:grid;position:fixed;inset:0;overflow-y:auto}.login-overlay[hidden]{display:none}.login-overlay .login-panel{background:color-mix(in srgb, var(--panel) 98%, transparent);border-color:color-mix(in srgb, var(--line) 76%, transparent);animation:login-panel-enter .42s var(--ease-out) both;box-shadow:0 32px 96px #0000003d}.login-overlay[data-closing]{pointer-events:none;animation:login-backdrop-exit .2s var(--ease-standard) both}.login-overlay[data-closing] .login-panel{animation:login-panel-exit .2s var(--ease-standard) both}@keyframes login-backdrop-enter{0%{opacity:0;-webkit-backdrop-filter:blur()saturate()}}@keyframes login-panel-enter{0%{opacity:0;transform:translateY(18px)scale(.975)}}@keyframes login-backdrop-exit{to{opacity:0}}@keyframes login-panel-exit{to{opacity:0;transform:translateY(8px)scale(.988)}}.login-panel{text-align:center;background:color-mix(in srgb, var(--panel) 74%, var(--paper));border:1px solid var(--line);border-radius:20px;width:min(540px,100%);padding:50px 48px 38px;position:relative;box-shadow:0 26px 80px #0000001f}.login-close{color:var(--muted);width:34px;height:34px;cursor:pointer;background:0 0;border:0;border-radius:50%;place-items:center;padding:0;display:inline-grid;position:absolute;top:22px;right:25px}.login-close:hover{color:var(--accent)}.login-close:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.login-close svg{fill:none;stroke:currentColor;stroke-width:1.6px;stroke-linecap:round;width:21px;height:21px}.login-panel h1{letter-spacing:-.035em;margin:0;font-size:clamp(1.75rem,3vw,2.2rem)}.login-intro{color:var(--muted);margin:14px 0 34px;font-size:1rem}.login-providers{gap:10px;display:grid}.login-providers a{text-align:left;border:1px solid var(--line);min-height:58px;transition:border-color .22s var(--ease-standard), background-color .22s var(--ease-standard), transform .32s var(--ease-out);border-radius:10px;grid-template-columns:34px 1fr 18px;align-items:center;gap:12px;padding:0 18px;display:grid}.login-providers a:hover,.login-providers a:focus-visible{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 7%, transparent);transform:translateY(-1px)}.login-providers a.is-unavailable{opacity:.42;cursor:not-allowed}.login-providers a.is-unavailable:hover,.login-providers a.is-unavailable:focus-visible{border-color:var(--line);background:0 0}.provider-mark{color:var(--ink);text-align:center;font:600 .72rem/1 Arial,sans-serif}.provider-apple{font-size:.95rem}.login-providers a>span:last-child{color:var(--muted);text-align:right}.login-note{color:var(--muted);margin:24px 0 0;font-size:.75rem;line-height:1.5}.login-status{color:var(--accent);margin:18px 0 -8px;font-size:.78rem;line-height:1.5}.login-status[hidden]{display:none}.account-page{width:min(880px,100% - 64px);min-height:72vh;margin:0 auto;padding:clamp(90px,13vh,142px) 0 110px}.account-loading{color:var(--muted)}.account-page h1{letter-spacing:-.045em;margin:0 0 100px;font-size:clamp(2rem,4vw,3.4rem)}.account-about h2,.profile-form h2{margin:0;font-size:1.1rem}.account-identity{border-bottom:1px solid var(--line);grid-template-columns:58px 1fr;align-items:center;gap:17px;margin-top:38px;padding-bottom:46px;display:grid}.profile-avatar{width:58px;height:58px;color:var(--paper);background:var(--muted);border-radius:50%;place-items:center;font:600 1.1rem Arial,sans-serif;display:grid;overflow:hidden}.profile-avatar img{object-fit:cover;width:100%;height:100%}.account-identity strong,.account-identity span{display:block}.account-identity strong{font-size:1.25rem}.account-identity span{color:var(--muted);margin-top:5px;font:400 .83rem Arial,sans-serif}.profile-form{grid-template-columns:1fr 1fr;gap:26px 34px;margin-top:80px;display:grid}.profile-form-heading{grid-column:1/-1;justify-content:space-between;margin-bottom:8px;display:flex}.profile-form-heading>span{color:var(--accent);font-size:.8rem}.profile-form label{color:var(--muted);gap:9px;font-size:.78rem;display:grid}.profile-form input,.profile-form textarea{width:100%;color:var(--ink);border:1px solid var(--line);background:0 0;border-radius:7px;padding:13px 14px;font:400 .95rem/1.5 Arial,sans-serif}.profile-form input:focus,.profile-form textarea:focus{border-color:var(--accent);outline:0}.profile-form input:disabled{opacity:.55}.profile-field-wide{grid-column:1/-1}.profile-form textarea{resize:vertical;min-height:100px}.profile-provider{align-self:end;gap:6px;display:grid}.profile-provider span{color:var(--muted);font-size:.78rem}.profile-provider strong{font-size:.95rem}.profile-actions{justify-content:flex-end;align-items:center;gap:20px;display:flex}.profile-actions button{min-height:44px;color:var(--paper);background:var(--ink);border:1px solid var(--ink);cursor:pointer;border-radius:7px;padding:0 20px}.profile-actions button:hover{color:#fff;background:var(--accent);border-color:var(--accent)}.profile-actions a{color:var(--accent);font-size:.85rem}.home-hero,.topic-section,.writing-section,.archive-section,.article-header,.article-cover,.article-nav{width:min(var(--max), calc(100% - 64px));margin-left:auto;margin-right:auto}.topic-section{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:0}.topic-grid{grid-template-columns:repeat(4,1fr);display:grid}.topic-grid article{border-left:1px solid var(--line);min-height:210px;padding:46px 34px 38px}.topic-grid article:first-child{border-left:0;padding-left:0}.topic-grid h2{letter-spacing:-.03em;margin:0 0 18px;font-family:Arial,sans-serif;font-size:1.35rem}.topic-grid p{max-width:220px;color:var(--muted);margin:0;font-size:.96rem;line-height:1.7}.writing-section{padding:72px 0 112px}.section-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:baseline;margin-bottom:18px;padding-bottom:14px;display:flex}.section-heading h2{letter-spacing:-.01em;margin:0;font-family:Arial,sans-serif;font-size:1rem}.section-heading span{color:var(--muted);font:400 .72rem Arial,sans-serif}.feature-grid{grid-template-columns:minmax(0,2.08fr) minmax(300px,.92fr);align-items:start;gap:42px;display:grid}.cover{aspect-ratio:4/3;background:#dedbd0;position:relative;overflow:hidden}.cover img{object-fit:cover;width:100%;height:100%}.cover-memory,.cover-cells{background:var(--figure);color:var(--ink);border:1px solid var(--line)}.cover-mark{border-top:1px solid;width:70%;height:1px;position:absolute;top:52%;left:15%}.cover-memory .cover-mark:before,.cover-memory .cover-mark:after{content:"";background:var(--figure);border:1px solid;border-radius:50%;width:9px;height:9px;position:absolute;top:-5px}.cover-memory .cover-mark:before{left:20%}.cover-memory .cover-mark:after{right:18%}.cover-cells .cover-mark{border:1px solid;width:38%;height:50%;top:25%;left:31%}.cover-cells .cover-mark:before,.cover-cells .cover-mark:after{content:"";border:1px solid;width:42%;height:42%;position:absolute}.cover-cells .cover-mark:before{top:18%;left:-24%}.cover-cells .cover-mark:after{bottom:18%;right:-24%}.cover-label,.cover-index{letter-spacing:.08em;font:700 .62rem Arial,sans-serif;position:absolute}.cover-label{bottom:18px;left:20px}.cover-index{top:18px;right:20px}.feature-story .cover{aspect-ratio:16/9}.story-meta{letter-spacing:.035em;gap:15px;margin-top:18px;font:400 .68rem Arial,sans-serif;display:flex}.story-meta span:last-child{color:var(--muted)}.feature-caption{grid-template-columns:minmax(0,1.28fr) minmax(280px,.72fr);gap:48px;padding-top:30px;display:grid}.feature-story h3{letter-spacing:-.04em;max-width:620px;margin:0;font-size:clamp(2rem,2.55vw,2.6rem);line-height:1.08}.feature-summary .story-meta{margin:0 0 16px}.feature-summary>p{max-width:560px;color:var(--muted);margin:0;font-size:1rem;line-height:1.7}.text-link{border-bottom:1px solid;margin-top:18px;padding-bottom:2px;font-size:.86rem;display:inline-block}.latest-list{border-top:1px solid var(--line)}.latest-item{border-bottom:1px solid var(--line);padding:22px 0 28px;display:block}.latest-item .story-meta{margin:0}.latest-item h3{letter-spacing:-.02em;margin:17px 0 10px;font-size:1.48rem;line-height:1.28}.latest-item p{color:var(--muted);margin:0;font-size:.88rem;line-height:1.6}.archive-section{padding:0 0 76px;position:relative}.archive-heading{justify-content:space-between;align-items:center;gap:48px;padding:0 0 56px;display:flex}.archive-heading h2{letter-spacing:-.04em;margin:0;font:600 2.15rem/1 Arial,sans-serif}.archive-search{width:min(360px,38vw);min-height:52px;color:var(--muted);border:1px solid var(--line);border-radius:9px;grid-template-columns:22px minmax(0,1fr);align-items:center;gap:13px;padding:0 18px;transition:border-color .18s;display:grid}.archive-search:focus-within{color:var(--ink);border-color:var(--muted)}.archive-search svg{fill:none;stroke:currentColor;stroke-width:1.4px;stroke-linecap:round;width:22px;height:22px}.archive-search input{width:100%;color:var(--ink);background:0 0;border:0;outline:0;padding:0;font:400 .9rem/1 Arial,sans-serif}.archive-search input::placeholder{color:var(--muted);opacity:1}.archive-table{border-top:1px solid var(--line)}.archive-labels,.archive-table>a{grid-template-columns:190px 190px minmax(0,1fr) 24px;align-items:center;gap:28px;display:grid}.archive-labels{min-height:52px;color:var(--muted);border-bottom:1px solid var(--line);letter-spacing:.025em;text-transform:uppercase;font:400 .68rem/1 Arial,sans-serif}.archive-table>a{border-bottom:1px solid var(--line);min-height:72px;padding:14px 0}.archive-table>a:after{content:"↗";color:var(--muted);text-align:right;opacity:0;grid-column:4;font:400 .78rem Arial,sans-serif;transition:opacity .16s,transform .16s;transform:translate(-4px,4px)}.archive-table>a:hover:after,.archive-table>a:focus-visible:after{opacity:1;transform:none}.archive-table>a span{color:var(--muted);font:400 .78rem/1.4 Arial,sans-serif}.archive-table>a strong{letter-spacing:-.01em;font:400 1.02rem/1.4 Noto Serif,Georgia,serif}html[lang=zh-CN] .archive-table>a strong{font-family:IBM Plex Sans SC,sans-serif;font-weight:600}.archive-table>a:hover strong{text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:1px}.archive-empty{color:var(--muted);border-bottom:1px solid var(--line);text-align:center;margin:0;padding:42px 0}.archive-status{color:var(--muted);text-align:right;margin:14px 0 0;font:400 .68rem/1 Arial,sans-serif}.article-page{padding-bottom:48px}.article-header-inner{width:min(940px,100% - 64px);margin:0 auto}.article-kicker{color:var(--muted);flex-wrap:wrap;align-items:center;gap:12px 24px;font-size:.85rem;line-height:1.35;display:flex}.article-kicker a,.article-kicker span{align-items:center;gap:7px;display:inline-flex}.article-kicker a:hover{color:var(--ink)}.article-header h1{max-width:900px;color:var(--ink);letter-spacing:-.055em;margin:44px 0 24px;font-size:clamp(3rem,5.2vw,5.3rem);font-weight:600;line-height:1.02}.article-header>.article-header-inner>p{max-width:720px;color:var(--muted);margin:0;font-size:clamp(1.08rem,1.5vw,1.32rem);line-height:1.65}.article-cover .cover{aspect-ratio:1.82}.article-reading-layout{width:min(760px,100% - 64px);margin:0 auto}.prose p{margin:0 0 30px}.prose>p:first-child{margin-bottom:76px;font-size:1.22rem;line-height:1.9}.prose h2,.prose h3{color:var(--ink);letter-spacing:-.04em;margin:88px 0 26px;scroll-margin-top:112px;font-size:2.05rem;line-height:1.18}.prose h3{margin-top:64px;font-size:1.55rem}.prose blockquote{color:var(--muted);border-block:1px solid var(--line);margin:58px 0;padding:26px 0;font-size:1.26rem;line-height:1.7}.prose blockquote p{margin:0}.article-toc-desktop{z-index:35;pointer-events:none;width:min(330px,100vw - 40px);position:fixed;top:clamp(210px,30vh,340px);right:max(20px,50vw - 740px)}.article-toc-panel{width:100%;min-height:220px;color:var(--muted);pointer-events:auto;transition:background-color .22s var(--ease-standard), border-color .22s var(--ease-standard), box-shadow .22s var(--ease-standard);background:0 0;border:1px solid #0000;border-radius:12px;outline:0;padding:22px 20px;position:relative;overflow:hidden}.article-toc-title{color:var(--ink);opacity:0;transition:opacity .18s ease, transform .22s var(--ease-out);margin:0 0 20px;font-family:Noto Serif,Georgia,serif;font-size:1.25rem;transform:translateY(-5px)}.article-toc-current{color:var(--ink);grid-template-columns:22px minmax(0,1fr);align-items:center;gap:10px;margin:0;font-size:.94rem;line-height:1.35;transition:opacity .15s;display:grid;position:absolute;top:22px;left:20px;right:20px}.article-toc-current svg,.article-toc-panel a svg{width:18px;height:18px;color:var(--line)}.article-toc-current svg{color:var(--muted)}.article-toc-panel ol{flex-direction:column;gap:5px;margin:34px 0 0;padding:0;list-style:none;display:flex}.article-toc-panel li a{min-height:32px;color:var(--muted);grid-template-columns:22px minmax(0,1fr);align-items:center;gap:10px;font-size:.9rem;line-height:1.35;display:grid}.article-toc-panel li a span{opacity:0;transition:opacity .15s ease, transform .22s var(--ease-out), color .16s ease;transform:translate(8px)}.article-toc-panel li.active a,.article-toc-panel li a:hover{color:var(--ink)}.article-toc-panel li.active a svg{color:var(--muted)}.article-toc-panel:hover,.article-toc-panel:focus-within,.article-toc-panel:focus{background:color-mix(in srgb, var(--paper) 94%, transparent);border-color:color-mix(in srgb, var(--line) 74%, transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 18px 46px #0000001a}.article-toc-panel:hover .article-toc-current,.article-toc-panel:focus-within .article-toc-current,.article-toc-panel:focus .article-toc-current{opacity:0;pointer-events:none}.article-end{width:min(940px,100% - 64px);margin:110px auto 0}.article-facts{color:var(--muted);border-bottom:1px solid var(--line);flex-wrap:wrap;gap:12px 26px;padding:0 0 32px;font-size:.82rem;display:flex}.article-facts span{align-items:center;gap:7px;display:inline-flex}.article-nav{border-bottom:1px solid var(--line);grid-template-columns:1fr 1fr;gap:64px;margin-top:0;padding:42px 0 54px;display:grid}.article-nav>div:last-child{text-align:right}.article-nav a{flex-direction:column;gap:9px;max-width:440px;display:inline-flex}.article-nav span{color:var(--muted);align-items:center;gap:8px;font-size:.84rem;display:inline-flex}.article-nav span svg{width:17px;height:17px}.article-nav a:hover strong{color:var(--accent)}.article-comments>h2{color:var(--ink);align-items:center;gap:12px;margin:0 0 42px;font-size:1.8rem;line-height:1.2;display:flex}.article-comments>h2 span{color:var(--muted);font-size:.8rem;font-weight:500}.comments-loading,.comments-empty{color:var(--muted);margin:-10px 0 44px;font-size:.94rem}.comment-list,.comment-replies{margin:0;padding:0;list-style:none}.comment-list{flex-direction:column;gap:38px;margin-bottom:54px;display:flex}.comment-replies{flex-direction:column;gap:28px;margin:28px 0 0 68px;display:flex}.comment-item{grid-template-columns:48px minmax(0,1fr);align-items:start;gap:18px;display:grid}.comment-avatar{width:48px;height:48px;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:50%;place-items:center;display:grid;overflow:hidden}.comment-avatar img,.comment-avatar svg{object-fit:cover;width:100%;height:100%}.comment-copy header{flex-wrap:wrap;align-items:baseline;gap:8px 18px;display:flex}.comment-copy header time{color:var(--muted);font-size:.82rem}.comment-copy>p{white-space:pre-wrap;margin:10px 0 12px;font-size:1rem;line-height:1.75}.comment-copy>button{color:var(--muted);cursor:pointer;font:inherit;background:0 0;border:0;align-items:center;gap:5px;padding:0;font-size:.82rem;display:inline-flex}.comment-copy>button:hover{color:var(--ink)}.comment-copy>button svg{width:17px;height:17px}.comment-composer{grid-template-columns:48px minmax(0,1fr);align-items:start;gap:18px;margin-top:18px;display:grid}.comment-signin{align-items:center;gap:7px;display:flex}.comment-signin svg{width:18px;height:18px}.comment-signin a{border-bottom:1px solid var(--line)}.comment-replying{color:var(--muted);background:var(--panel);border-radius:6px;align-items:center;gap:8px;margin:0 0 10px;padding:7px 10px;font-size:.8rem;display:inline-flex}.comment-replying button{color:inherit;cursor:pointer;background:0 0;border:0;padding:0;display:grid}.comment-replying svg{width:15px;height:15px}.comment-box{position:relative}.comment-box textarea{resize:vertical;width:100%;min-height:188px;color:var(--ink);background:color-mix(in srgb, var(--paper) 86%, var(--panel));border:1px solid var(--line);font:inherit;border-radius:12px;outline:0;padding:18px 20px 62px;font-size:.98rem;line-height:1.6;transition:border-color .16s,box-shadow .16s}.comment-box textarea:focus{border-color:var(--muted);box-shadow:0 0 0 3px color-mix(in srgb, var(--line) 34%, transparent)}.comment-box textarea:disabled{color:var(--muted);cursor:not-allowed}.comment-box textarea::placeholder{color:color-mix(in srgb, var(--muted) 62%, transparent)}.comment-box>button{min-height:38px;color:var(--paper);background:var(--ink);border:1px solid var(--ink);cursor:pointer;font:inherit;border-radius:8px;align-items:center;gap:7px;padding:0 15px;font-size:.84rem;display:inline-flex;position:absolute;bottom:14px;right:14px}.comment-box>button svg{width:16px;height:16px}.comment-box>button:disabled{color:var(--muted);border-color:var(--line);cursor:not-allowed;background:0 0}.comment-status{min-height:22px;color:var(--muted);margin:8px 0 0;font-size:.78rem}[data-search-row][hidden],[data-search-empty][hidden]{display:none!important}.category-breadcrumb{width:min(var(--max), calc(100% - 64px));height:52px;color:var(--muted);align-items:center;gap:12px;margin:0 auto;font:400 .76rem/1 Arial,sans-serif;display:flex}.category-breadcrumb a{color:var(--ink)}.category-hero{width:min(var(--max), calc(100% - 64px));border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:260px minmax(0,1fr);gap:7vw;min-height:520px;margin:0 auto;padding:64px 0 92px;display:grid}.category-picker{align-self:start;width:240px;position:relative}.category-picker summary{min-height:52px;color:var(--ink);border:1px solid var(--line);cursor:pointer;border-radius:8px;grid-template-columns:16px 1fr 16px;align-items:center;gap:12px;padding:0 16px;font:500 .82rem/1 Arial,sans-serif;list-style:none;transition:background-color .2s,border-color .2s;display:grid}.category-picker summary::-webkit-details-marker{display:none}.category-picker summary:focus{outline:none}.category-picker summary:focus-visible{outline:2px solid var(--ink);outline-offset:3px}.category-picker summary:hover,.category-picker[open] summary{background:var(--panel);border-color:var(--muted)}.category-picker-mark{width:16px;height:16px;color:var(--ink);place-items:center;font:500 1rem/1 Arial,sans-serif;display:grid}.category-picker-chevron{fill:none;stroke:currentColor;stroke-width:1.4px;width:16px;height:16px;transition:transform .2s}.category-picker[open] .category-picker-chevron{transform:rotate(180deg)}.category-picker nav{z-index:10;width:100%;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:6px 14px;position:absolute;top:60px;left:0;box-shadow:0 12px 28px #00000014}.category-picker nav a{color:var(--muted);border-bottom:1px solid var(--line);justify-content:space-between;padding:11px 2px;font:400 .8rem/1 Arial,sans-serif;display:flex}.category-picker nav a:last-child{border-bottom:0}.category-picker nav a:hover,.category-picker nav a.active{color:var(--ink)}.category-intro h1{letter-spacing:-.065em;margin:-16px 0 38px;font:400 clamp(5rem,10vw,8.5rem)/.95 Noto Serif,Georgia,serif}.category-intro p{max-width:760px;color:var(--muted);margin:0;font-size:clamp(1.35rem,2vw,1.8rem);line-height:1.65}html[lang=zh-CN] .category-intro p{font-family:IBM Plex Sans SC,sans-serif}.category-results{width:min(var(--max), calc(100% - 64px));margin:0 auto;padding:82px 0 140px}.category-results-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:32px;padding-bottom:18px;font:600 .78rem/1 Arial,sans-serif;display:flex}.category-results-title{justify-content:space-between;gap:28px;min-width:190px;display:flex}.category-results-status{color:var(--muted);font-weight:400}.category-search{width:min(340px,38vw);min-height:46px}.category-list>a{border-bottom:1px solid var(--line);grid-template-columns:180px minmax(0,1fr) 24px;align-items:start;gap:38px;padding:30px 0 32px;display:grid}.category-row-meta{color:var(--muted);flex-direction:column;gap:9px;padding-top:3px;font:400 .72rem/1.4 Arial,sans-serif;display:flex}.category-row-meta span{color:var(--ink)}.category-row-copy{min-width:0}.category-list h2{letter-spacing:-.03em;max-width:820px;margin:0 0 11px;font:500 clamp(1.45rem,2vw,1.9rem)/1.24 Noto Serif,Georgia,serif}html[lang=zh-CN] .category-list h2{font-family:IBM Plex Sans SC,sans-serif;font-weight:600}.category-list p{max-width:720px;color:var(--muted);margin:0;font-size:.92rem;line-height:1.65}.category-row-arrow{color:var(--muted);justify-self:end;padding-top:4px;font:400 .82rem/1 Arial,sans-serif}.category-list a:hover h2{text-underline-offset:5px;text-decoration:underline}.category-list a:hover .category-row-arrow{color:var(--ink)}.category-search-empty{color:var(--muted);border-bottom:1px solid var(--line);text-align:center;margin:0;padding:54px 0}.category-empty{min-height:280px;color:var(--muted);padding:54px 0}.category-empty p{margin:0 0 26px;font-size:1.15rem}.category-empty a{color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:3px;display:inline-block}.site-footer{border-top:1px solid var(--line);width:min(1280px,100% - 80px);margin:clamp(72px,9vw,112px) auto 0;padding:28px 0 26px;font-family:Noto Serif,Georgia,serif}.footer-main{grid-template-columns:auto minmax(180px,1fr) auto auto;align-items:center;gap:clamp(28px,4vw,60px);display:grid}.footer-wordmark{color:var(--ink);letter-spacing:-.025em;font-family:Noto Serif,Georgia,serif;font-size:1rem;font-weight:600;line-height:1}.footer-main p{color:var(--muted);margin:0;font-size:.86rem;font-weight:500;line-height:1.35}.footer-links{color:var(--muted);align-items:center;gap:24px;font-size:.86rem;font-weight:500;line-height:1;display:flex}.footer-links a:hover{color:var(--ink)}.footer-controls{align-items:center;gap:14px;display:flex}.footer-controls .language-switch{color:var(--muted)}.footer-controls .theme-toggle{color:var(--ink)}.footer-bottom{border-top:1px solid color-mix(in srgb, var(--line) 64%, transparent);color:var(--muted);justify-content:space-between;gap:24px;margin-top:24px;padding-top:20px;font-family:Noto Serif,Georgia,serif;font-size:.72rem;font-weight:500;line-height:1.2;display:flex}.friend-list{gap:0;display:grid}.friend-card{border-top:1px solid var(--line);grid-template-columns:150px minmax(0,1fr) auto;align-items:baseline;gap:28px;padding:28px 0;display:grid}.friend-card:last-child{border-bottom:1px solid var(--line)}.friend-card>span{color:var(--muted);letter-spacing:.02em;font-size:.82rem;font-weight:700;line-height:1}.friend-card strong{color:var(--ink);letter-spacing:-.025em;align-items:baseline;gap:.38em;font-size:clamp(1.15rem,1.35vw,1.32rem);font-weight:800;line-height:1.2;display:inline-flex}.friend-card strong span{color:var(--muted);font-size:.72em}.friend-card p{max-width:560px;color:var(--muted);grid-column:2;margin:0;font-size:clamp(.94rem,1vw,1.02rem);font-weight:500;line-height:1.55}.friend-card:hover strong span,.friend-card:hover strong{color:var(--accent)}.friends-page{width:min(900px,100% - 64px)}.friends-section{margin-top:clamp(76px,10vh,108px)}.friends-section>h2{margin-bottom:34px}.not-found{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:68vh;padding:70px 24px;display:flex}.not-found>span{font:700 6rem Arial,sans-serif}.not-found h1{margin:25px 0 10px;font-size:2rem}.not-found p{color:var(--muted)}.not-found a{border-bottom:1px solid;margin-top:20px}.about-page{width:min(620px,100% - 48px);margin:0 auto;padding:clamp(138px,20vh,220px) 0 100px;font-family:Noto Serif,Georgia,serif}.about-intro h1{color:var(--ink);letter-spacing:-.035em;margin:0 0 30px;font-size:clamp(2.05rem,2.55vw,2.62rem);font-weight:800;line-height:1.06}.about-intro p{color:var(--ink);letter-spacing:-.02em;margin:0;font-size:clamp(1.25rem,1.55vw,1.55rem);font-weight:700;line-height:1.45}.about-links{color:var(--muted);flex-wrap:wrap;gap:18px;margin-top:34px;font-size:clamp(1.02rem,1.25vw,1.22rem);font-weight:700;line-height:1.3;display:flex}.about-links a:hover{color:var(--ink)}.about-section{margin-top:clamp(104px,13vh,140px)}.about-section h2,.about-site-heading h2{color:var(--ink);letter-spacing:-.025em;margin:0;font-size:clamp(1.38rem,1.65vw,1.58rem);font-weight:800;line-height:1.2}.about-timeline{flex-direction:column;gap:58px;margin-top:48px;display:flex}.about-timeline-item{grid-template-columns:148px minmax(0,1fr);align-items:start;column-gap:34px;display:grid}.about-timeline-item time,.muted-line,.timeline-description{color:var(--muted);letter-spacing:-.02em;font-size:clamp(1.08rem,1.35vw,1.32rem);font-weight:700;line-height:1.42}.about-timeline-item time{white-space:nowrap}.about-timeline-item h3{color:var(--ink);letter-spacing:-.02em;margin:0;font-size:clamp(1.08rem,1.35vw,1.32rem);font-weight:800;line-height:1.28}.capabilities-list .about-timeline-item{align-items:baseline}.capabilities-list .timeline-description{margin:0}.timeline-title-link{color:inherit;align-items:baseline;gap:.42em;text-decoration:none;display:inline-flex}.timeline-title-link span{color:var(--muted);font-size:.72em;font-weight:700}.timeline-title-link:hover span{color:var(--accent)}.muted-line{margin:8px 0 0}.timeline-description{margin:12px 0 0}.based-section{width:100%;color:var(--ink);background:0 0;margin-left:0;padding:0}.based-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:baseline;gap:24px;margin-bottom:26px;padding-bottom:14px;display:flex}.based-heading h2{color:var(--ink);font-size:clamp(1.38rem,1.65vw,1.58rem)}.based-heading>span{color:var(--muted);letter-spacing:-.015em;font-size:clamp(.9rem,1.05vw,1rem);font-weight:700}.map-frame{aspect-ratio:1.72;border-block:1px solid color-mix(in srgb, var(--line) 78%, transparent);isolation:isolate;background:#eef1ec;width:100%;min-height:0;position:relative;overflow:hidden}.leaflet-map{z-index:0;background:#eef1ec;position:absolute;inset:0}.leaflet-map .leaflet-tile-pane{filter:grayscale(.18)saturate(.72)contrast(.86)brightness(1.08)}.leaflet-map[data-map-theme=dark] .leaflet-tile-pane{filter:grayscale(.08)saturate(.78)contrast(.9)brightness(.92)}.leaflet-map .leaflet-control-attribution{color:#5f625f;background:#ffffffb8;border-radius:6px 0 0;padding:3px 6px;font-size:10px;line-height:1.2}.leaflet-map .leaflet-control-attribution a{color:inherit;text-decoration:underline}.map-frame:before{content:"";z-index:1;pointer-events:none;background:color-mix(in srgb, var(--paper) 10%, transparent);position:absolute;inset:0}.location-marker{z-index:3;pointer-events:none;width:27px;height:27px;position:absolute;top:52%;left:53%;transform:translate(-50%,-50%)}.location-marker:before{content:"";background:linear-gradient(var(--ink), var(--ink)) 50% 0 / 1px 8px no-repeat, linear-gradient(var(--ink), var(--ink)) 50% 100% / 1px 8px no-repeat, linear-gradient(90deg, var(--ink), var(--ink)) 0 50% / 8px 1px no-repeat, linear-gradient(90deg, var(--ink), var(--ink)) 100% 50% / 8px 1px no-repeat;opacity:.7;position:absolute;inset:0}.location-marker:after{content:"";background:var(--accent);width:7px;height:7px;box-shadow:0 0 0 2px color-mix(in srgb, var(--paper) 82%, transparent);border-radius:50%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.map-caption{color:var(--muted);letter-spacing:.01em;justify-content:space-between;align-items:center;gap:24px;padding-top:13px;font-size:clamp(.82rem,1vw,.94rem);font-weight:700;line-height:1.3;display:flex}.map-caption a{color:var(--ink);align-items:center;gap:7px;display:inline-flex}.map-caption a:hover{color:var(--accent)}html[data-theme=dark] .based-section{color:var(--ink)}html[data-theme=dark] .map-frame{background:#111;border-color:#ffffff47}html[data-theme=dark] .map-frame:before{background:#0a0a0a14}.guest-copy{color:var(--muted);letter-spacing:-.02em;margin-top:52px;font-size:clamp(1.35rem,1.8vw,1.72rem);font-weight:700;line-height:1.52}.guest-copy p{margin:0 0 8px}.guest-form{margin-top:34px}.message-box{border:1px solid color-mix(in srgb, var(--line) 78%, transparent);background:var(--paper);border-radius:14px;min-height:285px;position:relative;overflow:hidden;box-shadow:0 2px 5px #00000014}.message-box textarea{resize:vertical;width:100%;min-height:285px;color:var(--ink);font:inherit;background:0 0;border:0;outline:0;padding:24px 170px 84px 24px;font-size:clamp(1.02rem,1.25vw,1.22rem);font-weight:700;line-height:1.4}.message-box textarea::placeholder{color:var(--muted);opacity:1}.message-box button{border:1px solid color-mix(in srgb, var(--line) 78%, transparent);background:var(--paper);height:46px;color:var(--muted);cursor:pointer;border-radius:14px;padding:0 18px;font-family:Noto Serif,Georgia,serif;font-size:clamp(.98rem,1.08vw,1.08rem);font-weight:700;line-height:1;position:absolute;bottom:14px;right:16px}.guest-status{min-height:1.5em;color:var(--muted);margin:16px 0 0;font-size:1rem}.about-site-heading{align-items:center;gap:12px;display:flex}.about-site-heading button{border:2px solid color-mix(in srgb, var(--line) 78%, transparent);width:32px;height:50px;color:var(--muted);cursor:pointer;background:0 0;border-radius:8px;place-items:center;padding:0;display:inline-grid}@media (max-width:800px){.header-inner{grid-template-columns:1fr auto;gap:13px 18px;width:calc(100% - 48px);height:auto;min-height:64px;padding:16px 0}.header-inner nav{grid-area:2/1/auto/-1;justify-self:start;gap:22px;font-size:1rem}.wordmark{font-size:1rem}.account-login,.account-trigger{font-size:.92rem}.account-login svg{width:20px;height:20px}.account-trigger>[data-account-name],.account-trigger>.account-chevron{display:none}.account-menu{width:min(250px,100vw - 48px);right:-50px}.home-hero,.topic-section,.writing-section,.archive-section,.site-footer{width:calc(100% - 48px)}.home-hero{grid-template-columns:1fr;gap:62px;min-height:0;padding:64px 0 78px}.hero-copy{gap:44px;min-height:0}.home-hero h1{font-size:1.5rem}.home-hero p{max-width:330px;font-size:1.08rem}.hero-category-list a{font-size:clamp(2.55rem,11.5vw,3.55rem);line-height:1.1}.login-page{padding:42px 20px 72px}.login-overlay{padding:20px}.login-panel{border-radius:16px;padding:46px 20px 30px}.login-close{top:18px;right:20px}.account-page{width:calc(100% - 48px);padding:72px 0 86px}.account-page h1{margin-bottom:72px}.profile-form{grid-template-columns:1fr;margin-top:64px}.profile-field-wide,.profile-form-heading{grid-column:1}.profile-actions{justify-content:space-between}.topic-grid{grid-template-columns:1fr 1fr}.topic-grid article,.topic-grid article:first-child{border-left:0;border-top:1px solid var(--line);min-height:170px;padding:28px 18px 28px 0}.topic-grid article:nth-child(2n){border-left:1px solid var(--line);padding-left:18px}.topic-grid article:nth-child(-n+2){border-top:0}.topic-grid h2{margin:0 0 12px}.writing-section{padding:54px 0 82px}.feature-grid{grid-template-columns:1fr;gap:54px}.feature-caption{grid-template-columns:1fr;gap:18px;padding-top:22px}.feature-story h3{font-size:2.05rem}.feature-summary .story-meta{margin-bottom:12px}.archive-heading{grid-template-columns:1fr;gap:24px;padding-bottom:34px;display:grid}.archive-heading h2{font-size:1.75rem}.archive-search{width:100%;min-height:50px}.archive-labels{display:none}.archive-table>a{grid-template-columns:minmax(0,1fr) auto;gap:12px 15px;min-height:0;padding:22px 0 24px}.archive-table>a strong{grid-area:1/1;margin:0;font-size:1.08rem}.archive-table>a:after{opacity:1;grid-area:1/2;align-self:start;transform:none}.archive-table>a span:first-child{grid-area:2/1}.archive-table>a span:nth-child(2){text-align:right;grid-area:2/2}.category-breadcrumb,.category-hero,.category-results{width:calc(100% - 48px)}.category-breadcrumb{height:48px}.category-hero{grid-template-columns:1fr;gap:64px;min-height:0;padding:38px 0 66px}.category-picker{width:100%}.category-intro h1{margin:0 0 28px;font-size:clamp(3.8rem,16vw,5.2rem)}.category-intro p{font-size:1.2rem;line-height:1.6}.category-results{padding:62px 0 96px}.category-results-heading{grid-template-columns:1fr;gap:22px;display:grid}.category-search{width:100%}.category-list>a{grid-template-columns:minmax(0,1fr) auto;gap:18px 14px;padding:26px 0 29px}.category-row-copy{grid-area:1/1}.category-list h2{font-size:1.45rem}.category-row-arrow{grid-area:1/2}.category-row-meta{flex-direction:row;grid-area:2/1/auto/-1;gap:14px;padding-top:0}.article-header{padding:52px 0 44px}.article-header-inner{width:calc(100% - 48px)}.article-kicker{gap:10px 16px;font-size:.78rem}.article-header h1{margin:34px 0 18px;font-size:clamp(2.35rem,11vw,3.35rem);line-height:1.05}.article-cover{width:calc(100% - 48px);margin-bottom:58px}.article-cover .cover{aspect-ratio:1.35}.article-toc-desktop{display:none}.article-toc-mobile{border-block:1px solid var(--line);margin:0 24px 52px;padding:15px 0;display:block}.article-toc-mobile summary{cursor:pointer;color:var(--ink);justify-content:space-between;align-items:center;font-size:.9rem;font-weight:700;list-style:none;display:flex}.article-toc-mobile summary::-webkit-details-marker{display:none}.article-toc-mobile summary span{color:var(--muted);font-size:.74rem}.article-toc-mobile ol{flex-direction:column;gap:12px;margin:20px 0 4px;padding:0;list-style:none;display:flex}.article-toc-mobile li[data-level="3"]{padding-left:16px}.article-toc-mobile a{color:var(--muted);font-size:.88rem;line-height:1.4}.article-reading-layout{width:100%;display:block}.prose{padding:0 24px;font-size:1rem}.prose>p:first-child{margin-bottom:52px;font-size:1.16rem}.prose h2{margin-top:58px;font-size:1.72rem}.prose blockquote{margin:42px 0;padding:20px 0;font-size:1.24rem}.article-end{width:calc(100% - 48px);margin-top:78px}.article-nav{grid-template-columns:1fr;gap:38px;padding:36px 0 44px}.article-nav>div:last-child{text-align:left}.article-comments{padding-top:52px}.article-comments>h2{margin-bottom:34px}.comment-list{gap:32px}.comment-replies{margin-left:28px}.comment-item,.comment-composer{grid-template-columns:42px minmax(0,1fr);gap:13px}.comment-avatar{width:42px;height:42px}.comment-box textarea{min-height:168px;padding:16px 16px 58px}.about-page{width:calc(100% - 48px);padding:88px 0 82px}.about-section{margin-top:96px}.friends-page{width:calc(100% - 48px)}.friend-card{grid-template-columns:1fr auto;gap:10px 20px;padding:24px 0 26px}.friend-card>span,.friend-card p{grid-column:1/-1}.friend-card strong{grid-column:1}.friend-card p{margin-top:2px}.about-timeline{gap:50px;margin-top:42px}.about-timeline-item{grid-template-columns:1fr;gap:12px}.timeline-description{margin-top:14px}.based-heading{margin-bottom:20px}.map-frame{aspect-ratio:1.08;min-height:0}.map-caption{padding-top:11px}.guest-copy{margin-top:38px}.message-box textarea{padding-right:24px}.message-box button{height:42px;bottom:12px;right:12px}.footer-main{grid-template-columns:1fr;align-items:start;gap:16px}.footer-links{flex-wrap:wrap;gap:12px 22px;margin-top:8px}.footer-controls{margin-top:4px}.footer-bottom{margin-top:22px}}@media (max-width:420px){.wordmark{font-size:1.1rem}.home-hero h1{font-size:1.4rem}.home-hero p{font-size:1.04rem}.feature-story h3{font-size:1.9rem}.article-header h1{font-size:2.12rem}.article-facts{gap:10px 18px}.comment-replies{margin-left:14px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.site-header{border-bottom-color:#0000;min-height:48px}.header-inner{width:min(1248px,100% - 32px);height:48px}.wordmark,.header-inner nav,.account-login,.account-trigger{font-size:.875rem}.mobile-nav-toggle,.mobile-nav-overlay{display:none}.mobile-nav-toggle{width:24px;height:24px;color:var(--chrome-text);cursor:pointer;background:0 0;border:0;place-items:center;padding:0}.mobile-nav-toggle svg{width:18px;height:18px}.article-page{padding:0 0 24px;font-family:Noto Serif SC Variable,Noto Serif,Georgia,serif}body:has(.article-page){background:#fff}body:has(.article-page) .site-header{background:#ffffffc7}html[data-theme=dark] body:has(.article-page){background:var(--paper)}html[data-theme=dark] body:has(.article-page) .site-header{background:color-mix(in srgb, var(--paper) 78%, transparent)}.article-header{width:100%;padding:116px 0 32px}.article-header-inner,.article-reading-layout,.article-end{width:min(576px,100% - 32px);margin-inline:auto}.article-kicker{gap:8px 16px;font-size:.875rem;line-height:20px}.article-kicker svg{width:16px;height:16px}.article-header h1{letter-spacing:0;max-width:none;margin:12px 0 0;font-size:1.5rem;font-weight:700;line-height:2rem}.article-header>.article-header-inner>p{display:none}.article-content-shell,.article-reading-layout{position:relative}.article-cover-title{letter-spacing:0;align-items:center;gap:7px;margin:0 0 32px;font-size:1.25rem;font-weight:700;line-height:1.75rem;display:flex}.article-cover-title svg{width:20px;height:20px;color:var(--muted)}.article-cover{width:100%;margin:0 0 40px}.article-cover .cover{aspect-ratio:4/3;border-radius:0}.article-cover .cover img{object-fit:cover;width:100%;height:100%}.prose{color:var(--ink);font-size:1rem;line-height:1.8}.prose p,.prose>p:first-child{margin:0 0 16px;font-size:1rem;line-height:1.8}.prose h2,.prose h3{letter-spacing:0;margin:36px 0 16px;scroll-margin-top:72px;font-size:1.25rem;font-weight:700;line-height:1.75rem}.prose h3{font-size:1.08rem}.prose blockquote{color:var(--muted);border:0;border-left:2px solid var(--line);margin:24px 0;padding:0 0 0 16px;font-size:1rem;line-height:1.8}.prose ul,.prose ol{margin:16px 0;padding-left:2em}.prose li{margin:5px 0}.article-toc-desktop{z-index:35;pointer-events:none;width:256px;height:100%;position:absolute;top:0;left:calc(50% + 352px)}.article-toc-panel{width:256px;min-height:188px;color:var(--muted);box-shadow:none;pointer-events:auto;background:0 0;border:0;border-radius:0;outline:0;padding:0;position:sticky;top:80px;overflow:visible}.article-toc-title{height:20px;color:var(--ink);opacity:0;margin:0 0 8px;font-family:inherit;font-size:.875rem;line-height:20px;transform:none}.article-toc-current{min-height:20px;color:var(--ink);grid-template-columns:12px minmax(0,1fr);gap:8px;font-size:.875rem;line-height:20px;position:absolute;top:28px;left:0;right:0}.article-toc-panel ol{gap:0;margin:0}.article-toc-panel li a{grid-template-columns:12px minmax(0,1fr);gap:8px;min-height:28px;padding:0;font-size:.875rem;line-height:20px}.article-toc-panel li[data-level="3"] a{padding-left:12px}.article-toc-current svg,.article-toc-panel a svg{width:12px;height:12px}.article-toc-panel li a span{opacity:0;text-overflow:ellipsis;white-space:nowrap;overflow:hidden;transform:none}.article-toc-panel:hover,.article-toc-panel:focus-within,.article-toc-panel:focus{box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border-color:#0000}.article-toc-panel:hover .article-toc-title,.article-toc-panel:focus-within .article-toc-title,.article-toc-panel:focus .article-toc-title,.article-toc-panel:hover li a span,.article-toc-panel:focus-within li a span,.article-toc-panel:focus li a span{opacity:1;transform:none}.article-toc-panel:hover ol,.article-toc-panel:focus-within ol,.article-toc-panel:focus ol{margin-top:0}.article-toc-mobile{display:none}.article-end{margin-top:36px}.article-facts{gap:8px 14px;padding:0 0 28px;font-size:.78rem;line-height:20px}.article-facts svg{width:15px;height:15px}.article-nav{align-items:start;gap:32px;width:100%;margin-inline:0;padding:30px 0 34px}.article-nav>div{align-items:flex-start;min-width:0;display:flex}.article-nav>div:last-child{justify-content:flex-end}.article-nav a{gap:6px;width:100%;max-width:none}.article-nav>div:last-child a{align-items:flex-end}.article-nav span{font-size:.78rem}.article-nav strong{font-size:.875rem;line-height:1.5}.article-comments{padding-top:34px}.article-comments>h2{margin:0 0 22px;font-size:1.25rem}.article-comments>h2 svg{width:22px;height:22px}.comments-loading,.comments-empty{margin:0 0 26px;font-size:.875rem}.comment-list{gap:22px;margin-bottom:28px}.comment-replies{gap:18px;margin:16px 0 0 40px}.comment-item,.comment-composer{grid-template-columns:32px minmax(0,1fr);gap:8px}.comment-avatar{width:32px;height:32px}.comment-avatar svg{width:22px;height:22px}.comment-copy header{gap:6px 14px}.comment-copy header strong{font-size:.875rem}.comment-copy header time,.comment-copy>button{font-size:.75rem}.comment-copy>p{margin:5px 0 7px;font-size:.875rem;line-height:1.72}.comment-composer{margin-top:10px}.comment-identity,.comment-signin{min-height:24px;margin:0 0 6px;font-size:.875rem}.comment-box textarea{border-radius:8px;height:96px;min-height:96px;padding:10px 14px 40px;font-size:.875rem}.comment-box>button{border-radius:7px;min-height:34px;padding:0 12px;font-size:.78rem;bottom:10px;right:10px}body:has(.article-page) .site-footer{border-top:0;width:min(1248px,100% - 32px);min-height:116px;margin-top:220px;padding:0 0 24px;font-family:Noto Serif SC Variable,Noto Serif,Georgia,serif;position:relative}body:has(.article-page) .footer-main{justify-content:flex-end;display:flex}body:has(.article-page) .footer-wordmark{display:none}body:has(.article-page) .footer-main>p{display:none}body:has(.article-page) .footer-links{display:none}body:has(.article-page) .footer-bottom{border:0;margin:0;padding:0;font-size:.78rem;position:absolute;top:8px;left:0}body:has(.article-page) .footer-bottom span:last-child{display:none}@media (max-width:980px){.article-toc-desktop{display:none}}@media (max-width:800px){html.mobile-nav-open{overflow:hidden}.header-inner{grid-template-columns:1fr auto;gap:16px;width:calc(100% - 32px);height:48px;min-height:48px;padding:0}.header-inner .desktop-nav{display:none}.account-area{gap:14px}.mobile-nav-toggle{display:grid}.mobile-nav-overlay:not([hidden]){z-index:49;color:var(--muted);-webkit-backdrop-filter:blur(64px)saturate(60%);background:#fffffff0;flex-direction:column;gap:30px;padding:300px 32px 32px;font-family:Noto Serif SC Variable,Noto Serif,Georgia,serif;font-size:1.45rem;display:flex;position:fixed;inset:48px 0 0}.mobile-nav-overlay a.active{color:var(--ink)}.article-header{padding:116px 0 32px}.article-header-inner,.article-reading-layout,.article-end{width:calc(100% - 32px)}.article-kicker{gap:8px 14px;font-size:.8rem}.article-header h1{margin-top:12px;font-size:1.5rem;line-height:2rem}.article-cover-title{margin-bottom:32px;font-size:1.25rem}.article-cover{width:100%;margin-bottom:38px}.article-cover .cover{aspect-ratio:4/3}.prose{padding:0;font-size:1rem;line-height:1.8}.prose>p:first-child{margin-bottom:16px;font-size:1rem}.prose h2{margin-top:34px;font-size:1.25rem}.article-end{margin-top:34px}.article-nav{grid-template-columns:1fr;gap:24px;padding:28px 0 32px}.article-nav>div:last-child{text-align:left;justify-content:flex-start}.article-nav>div:last-child a{align-items:flex-start}.article-comments{padding-top:32px}.comment-replies{margin-left:24px}.comment-item,.comment-composer{grid-template-columns:32px minmax(0,1fr);gap:8px}.comment-avatar{width:32px;height:32px}.comment-box textarea{height:150px;min-height:150px;padding:12px 12px 48px}body:has(.article-page) .site-footer{width:calc(100% - 32px);min-height:96px;margin-top:160px}body:has(.article-page) .footer-controls{gap:8px}}