@import url("/assets/tokens.css");
*{box-sizing:border-box}
html{scroll-padding-top:24px}
body{margin:0;background:var(--color-surface);color:var(--color-text);font:var(--text-body)/var(--leading-body) var(--font-body)}
a{color:var(--color-brand);text-underline-offset:4px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
a:focus-visible,input:focus-visible,button:focus-visible,select:focus-visible,summary:focus-visible,.table-scroll:focus-visible{outline:3px solid var(--color-focus);outline-offset:4px}
img{max-width:100%;height:auto}
h1,h2,h3{font-family:var(--font-heading);font-weight:850;line-height:1.12;letter-spacing:-.025em;overflow-wrap:break-word}
h1{font-size:clamp(36px,4.7vw,68px);margin:16px 0 24px}
h2{font-size:clamp(29px,3vw,44px);margin:40px 0 20px}
h3{font-size:24px;margin:18px 0}
p{margin:16px 0}
button,input,select{font:inherit}
button,select{cursor:pointer}
select{min-height:44px;max-width:100%;padding:7px 30px 7px 10px;color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-muted);border-radius:0}
option{color:var(--color-text);background:var(--color-surface)}
.skip{position:absolute;top:-100px;left:20px;z-index:20;padding:10px 20px;background:var(--color-signal);color:var(--color-signal-text)}
.skip:focus{top:12px}
.masthead{max-width:1320px;margin:auto;padding:24px 4vw;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:3px solid var(--color-brand)}
.brand{display:flex;gap:13px;align-items:center;text-decoration:none;color:var(--color-brand);font-weight:900;font-size:34px;line-height:1.1}
.brand small{display:block;font-size:13px;letter-spacing:.055em;font-weight:650;margin-top:6px;max-width:28em}
.railmark{display:block;flex:none;width:48px;height:48px;font-size:0;background:url('/assets/icon.svg') center/contain no-repeat}
.masthead nav{display:flex;gap:6px 22px;flex-wrap:wrap;align-items:center}
.masthead nav a{min-height:44px;display:flex;align-items:center;font-size:15px;text-decoration:none;font-weight:700}
.masthead nav a:hover,.masthead nav a[aria-current]{text-decoration:underline;text-decoration-color:var(--color-attention);text-decoration-thickness:3px}
.kicker,.article-category{font:700 13px/1.5 var(--font-mono);letter-spacing:.055em;color:var(--color-brand)}
main{max-width:1320px;margin:auto}
.front{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;align-items:center;padding:56px 4vw 64px;border-bottom:1px solid var(--color-border)}
.front h1{font-size:clamp(40px,4.8vw,68px);text-transform:uppercase}
.front h1 em{font-style:normal;color:var(--color-attention)}
.front p:not(.kicker){max-width:52ch;color:var(--color-muted)}
.front .historical-photo{margin:0}
.front img{display:block;width:auto;max-width:100%;height:auto}
.front figcaption{margin-top:12px}
.button{display:inline-flex;gap:24px;background:var(--color-action);color:var(--color-action-text);text-decoration:none;padding:13px 22px;align-items:center;min-height:48px;font-size:15px;font-weight:750;margin-top:14px;border:1px solid transparent}
.button:hover,.search-form button:hover{background:var(--color-action-hover)}
.text-link{font-size:15px;font-weight:750}
.archive-notice,.historical-notice{background:var(--color-signal);color:var(--color-signal-text);padding:16px 20px;border-left:5px solid var(--color-attention);font-size:15px;line-height:1.6}
.archive-notice a,.historical-notice a{color:inherit}
.subjects,.life,.journey,.school-life{padding:44px 4vw 60px;border-top:1px solid var(--color-border)}
.section-heading{max-width:780px}
.section-heading h2{margin-top:12px}
.subject-grid,.journey-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:32px;border-top:5px solid var(--color-brand)}
.subject-grid>a,.journey-grid>a{display:flex;flex-direction:column;min-height:280px;padding:24px 0;text-decoration:none;border-bottom:1px solid var(--color-border)}
.subject-grid>a:hover,.life-links>a:hover{border-bottom-color:var(--color-attention)}
.subject-grid span{font:700 13px/1.5 var(--font-mono);color:var(--color-muted)}
.subject-grid h3{font-size:29px}
.subject-grid p{font-size:16px;color:var(--color-muted);margin:0 0 24px}
.subject-grid b{font-size:15px;margin-top:auto}
.front-chronicle{padding:48px 4vw 60px;background:var(--color-inverse);color:var(--color-inverse-text);display:grid;grid-template-columns:1fr 1.35fr;gap:64px}
.front-chronicle .kicker{color:var(--color-signal)}
.front-chronicle h2{font-size:44px;margin-top:14px}
.front-chronicle p:not(.kicker){font-size:17px;color:var(--color-inverse-muted)}
.front-chronicle a{color:var(--color-inverse-text)}
.front-chronicle a:focus-visible{outline-color:var(--color-focus-inverse)}
.news-stack>a{display:grid;grid-template-columns:minmax(0,1fr) 25px;gap:0 16px;border-top:1px solid var(--color-inverse-border);text-decoration:none;padding:20px 0}
.news-stack time{grid-column:1;font:13px/1.5 var(--font-mono);color:var(--color-signal)}
.news-stack h3{font-size:26px;line-height:1.25;margin:9px 0}
.news-stack span{grid-column:2;grid-row:1/3;align-self:center}
.life-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:28px}
.life-links>a{text-decoration:none;border-bottom:3px solid var(--color-brand);padding:18px 0 26px}
.life-links span{font-size:13px;color:var(--color-muted)}
.life-links h3{font-size:29px}
.life-links b{font-size:15px}
footer{max-width:1320px;margin:auto;padding:36px 4vw 26px;border-top:3px solid var(--color-brand);display:grid;grid-template-columns:1fr 1.1fr;gap:24px;font-size:14px}
.footer-brand{font-size:27px;font-weight:900;text-decoration:none}
footer p{color:var(--color-muted)}
footer nav{display:grid;grid-template-columns:1fr 1fr;align-content:start;gap:8px 24px}
footer nav a{display:flex;min-height:44px;align-items:center}
.historical-status{grid-column:1/-1;padding-top:18px;border-top:1px solid var(--color-border);font-size:13px}
.breadcrumbs{font-size:13px;padding:24px 4vw;color:var(--color-muted);overflow-wrap:anywhere}
.article-layout{display:grid;grid-template-columns:200px minmax(0,790px);gap:48px;justify-content:center;padding:12px 4vw 72px}
.contents{position:sticky;top:28px;align-self:start;font-size:14px;line-height:1.5;padding-top:12px}
.contents summary{font-weight:800;padding:12px 0;cursor:pointer}
.contents nav{display:grid}
.contents a{display:block;text-decoration:none;padding:11px 0;min-height:44px;border-bottom:1px solid var(--color-border)}
article{min-width:0}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px 20px}
.article-meta p{margin:0}
.article-meta time{font:13px/1.6 var(--font-mono);color:var(--color-muted)}
article h1{font-size:clamp(36px,4.2vw,60px)}
.article-lead{font-size:21px;line-height:1.6;color:var(--color-muted);margin-bottom:36px}
.article-body p,.article-body li{max-width:var(--measure-prose)}
.article-body h2{margin-top:48px;padding-top:16px;border-top:2px solid var(--color-brand)}
.article-body h3{font-size:24px;margin-top:30px}
.article-body li{padding-left:4px;margin:10px 0}
.table-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--color-border);margin:26px 0;scrollbar-color:var(--color-brand) var(--color-surface-muted)}
table{border-collapse:collapse;width:100%;font-size:15px;line-height:1.6;min-width:470px}
table.wide{min-width:740px}
table caption{text-align:left;padding:14px 16px;background:var(--color-surface-muted);font-weight:750}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--color-border);vertical-align:top}
th{background:var(--color-surface-muted);font-size:14px;font-weight:800}
td:first-child{white-space:nowrap}
.table-hint{font-size:14px;line-height:1.5;color:var(--color-text);padding:12px 14px;border-left:4px solid var(--color-attention);background:var(--color-surface-muted);margin:24px 0 -12px}
.table-hint[hidden]{display:none}
.profession-visual,.diagram{background:var(--color-surface-muted);padding:22px;margin:32px 0}
.profession-visual{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,.75fr);gap:24px;align-items:center}
.profession-visual>img,.diagram>img{width:100%;display:block;object-fit:contain}
.profession-visual>img{max-height:430px}
.diagram{max-width:650px;margin:32px auto}
.diagram>img{max-height:640px}
.profession-visual ul,.profession-visual ol,.diagram ol{font-size:15px;padding-left:24px}
.historical-photo{margin:32px 0}
.historical-photo img{display:block;width:auto;max-width:100%;height:auto;background:var(--color-surface-muted)}
figcaption{font-size:13px;line-height:1.6;color:var(--color-muted);margin-top:10px;max-width:66ch}
.photo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:28px;align-items:start}
.photo-grid .historical-photo{margin:0}
.photo-grid img{height:auto;object-fit:contain}
.portraits{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.portraits img{width:auto;max-width:100%;height:auto;object-fit:contain}
.portraits figcaption{font-size:13px}
.related,.related-demo{border-top:4px solid var(--color-brand);margin-top:48px;padding-top:8px}
.related h2,.related-demo h2{font-size:29px}
.related>a,.related-demo>a{display:flex;flex-direction:column;text-decoration:none;padding:16px 0;border-bottom:1px solid var(--color-border)}
.related time,.related-demo time{font:13px/1.5 var(--font-mono);color:var(--color-muted)}
.related span,.related-demo span{font-family:var(--font-heading);font-size:24px;font-weight:800;line-height:1.25;margin-top:8px}
.listing{padding:44px 4vw 80px;max-width:1100px;margin:auto}
.year-nav{display:flex;gap:10px;flex-wrap:wrap;margin:32px 0 44px}
.year-nav a{min-width:75px;min-height:44px;padding:8px 15px;border:1px solid var(--color-brand);text-align:center;text-decoration:none;font:15px/1.7 var(--font-mono)}
.year-nav a:hover{background:var(--color-surface-muted)}
.year{display:grid;grid-template-columns:110px minmax(0,1fr);gap:28px;margin:32px 0}
.year>h2{font:800 30px/1.2 var(--font-mono);margin:18px 0}
.chronicle-row{display:grid;grid-template-columns:minmax(0,1fr) 25px;gap:0 20px;padding:22px 0;text-decoration:none;border-top:1px solid var(--color-border)}
.chronicle-row time{font:13px/1.5 var(--font-mono);color:var(--color-muted)}
.chronicle-row h3{font-size:28px;line-height:1.25;margin:9px 0 0}
.chronicle-row>span{grid-column:2;grid-row:1/3;align-self:center}
.search-form{margin:32px 0 20px}
.search-form label{display:block;font-weight:750;font-size:15px}
.search-form>div{display:flex;margin-top:10px;gap:10px}
.search-form input{min-width:0;flex:1;color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-muted);padding:14px 16px;border-radius:0}
.search-form input::placeholder{color:var(--color-muted);opacity:1}
.search-form button{border:1px solid transparent;background:var(--color-action);color:var(--color-action-text);padding:14px 24px;font-size:16px;font-weight:750;cursor:pointer}
#search-status{font-size:15px;color:var(--color-muted)}
.search-results>a{display:block;padding:24px 0;border-bottom:1px solid var(--color-border);text-decoration:none}
.search-results h2{font-size:29px;margin:8px 0}
.search-results p{color:var(--color-muted);font-size:16px}
.search-results small{font:13px/1.5 var(--font-mono)}
.not-found{padding:72px 5vw;max-width:900px;margin:auto;min-height:55vh}
.not-found h1{font-size:clamp(40px,6vw,68px)}
.not-found .text-link{margin-left:24px}
.not-found p:not(.kicker){color:var(--color-muted)}
.availability-note{font-size:15px;color:var(--color-muted);border-left:4px solid var(--color-attention);padding:12px 16px;margin:26px 0;background:var(--color-surface-muted)}

@media(max-width:1100px){.masthead{align-items:flex-start;flex-direction:column;gap:18px}
.front{gap:30px}
.article-layout{grid-template-columns:170px minmax(0,1fr);gap:28px}
.front-chronicle{gap:32px}
}
@media(max-width:700px){.masthead{padding:22px 6vw 16px}
.masthead nav{gap:0 20px}
.brand{font-size:29px;gap:10px}
.brand small{font-size:13px;letter-spacing:0;max-width:22ch}
.railmark{width:40px;height:40px}
.front{grid-template-columns:1fr;padding:32px 6vw 42px;gap:28px}
.front h1{font-size:clamp(31px,8.5vw,51px);line-height:1.08}
.front h1 br{display:initial}
.subjects,.life,.journey,.school-life{padding:32px 6vw 42px}
.subject-grid,.journey-grid,.life-links{grid-template-columns:1fr;gap:0}
.subject-grid>a,.journey-grid>a{min-height:0;padding:24px 0}
.subject-grid h3 br{display:none}
.subject-grid p{margin-bottom:18px}
.front-chronicle{grid-template-columns:1fr;padding:34px 6vw 42px;gap:20px}
.front-chronicle h2{font-size:37px}
.front-chronicle h2 br{display:none}
.news-stack h3{font-size:25px}
.life-links>a{padding:24px 0}
footer{grid-template-columns:1fr;padding:32px 6vw 24px}
footer nav{gap:4px 18px}
.article-layout{display:flex;flex-direction:column;padding:0 6vw 48px;gap:24px}
.contents{position:static;width:100%;padding:0}
.contents details{border:1px solid var(--color-border);padding:0 16px}
.contents nav{padding-bottom:12px}
.contents>a{display:none}
article{width:100%}
article h1{font-size:clamp(30px,8.2vw,44px);hyphens:auto}
.article-lead{font-size:19px}
.article-body h2{font-size:30px;margin-top:36px}
.breadcrumbs{padding:20px 6vw}
.article-body ul{padding-left:22px}
.profession-visual,.diagram{padding:14px}
.profession-visual{grid-template-columns:1fr;gap:12px}
.profession-visual>img{max-height:360px}
.diagram>img{max-height:520px}
.photo-grid{grid-template-columns:1fr;gap:28px}
.portraits{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.listing{padding:32px 6vw 52px}
.year{display:block;margin-top:32px}
.year>h2{margin:28px 0 14px}
.chronicle-row h3{font-size:26px}
.year-nav{margin:26px 0}
.search-form>div{flex-direction:column}
.search-form button{min-height:48px}
.not-found{padding:48px 6vw}
.not-found .text-link{display:block;margin:22px 0}
th,td{padding:12px 14px}
}

.archive-notice a:focus-visible,.historical-notice a:focus-visible{outline-color:var(--color-signal-text)}

/* Publication direction: a depot sign, a route spine and a documentary journal. */
.masthead{flex-wrap:wrap}
.masthead nav{justify-content:flex-end;flex:1}
.archive-notice{max-width:1320px;margin:auto;display:flex;justify-content:space-between;gap:12px 28px;border-left:0;border-bottom:1px solid var(--color-signal-text);padding:14px 4vw;font-size:14px}
.archive-range{font:13px/1.6 var(--font-mono);align-self:center}
.front-workshop{background:var(--color-inverse);color:var(--color-inverse-text);border-left:8px solid var(--color-attention);padding-top:42px;padding-bottom:46px}
.front-workshop .kicker{color:var(--color-signal)}
.front-workshop h1{font-size:clamp(40px,4.2vw,64px);line-height:1.02;letter-spacing:-.04em;margin-top:22px;overflow-wrap:normal}
.hero-last-line{display:block;font-size:.79em;line-height:1.12}
.front-workshop p:not(.kicker),.front-workshop figcaption{color:var(--color-inverse-muted)}
.front-workshop .button{background:var(--color-signal);color:var(--color-signal-text);border-color:var(--color-signal)}
.front-workshop .button:hover{background:var(--color-focus-inverse)}
.front-workshop a:focus-visible{outline-color:var(--color-focus-inverse)}
.front-workshop .historical-photo img{max-width:min(100%,584px)}
.front-workshop figcaption{border-top:1px solid var(--color-inverse-border);padding-top:12px}
.journey{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.4fr);gap:40px}
.journey .section-heading h2{font-size:36px}
.journey .section-heading p:not(.kicker){color:var(--color-muted);font-size:16px}
.station-list{list-style:none;padding:0;margin:8px 0 0;position:relative}
.station-list:before{content:"";position:absolute;left:7px;top:25px;bottom:48px;width:4px;background:var(--color-brand)}
.station-list li{position:relative;padding-left:42px}
.station-list li:before{content:"";position:absolute;left:0;top:26px;width:18px;height:18px;border:4px solid var(--color-brand);border-radius:50%;background:var(--color-surface)}
.station-list a{display:block;padding:18px 0 22px;border-bottom:1px solid var(--color-border);text-decoration:none;min-height:96px}
.station-list strong{display:block;font:850 28px/1.2 var(--font-heading);letter-spacing:-.025em}
.station-list span{display:block;font-size:16px;color:var(--color-muted);margin-top:8px}
.station-list a:hover strong{text-decoration:underline;text-decoration-color:var(--color-attention);text-underline-offset:5px}
.school-life{border-top:3px solid var(--color-brand)}
.school-life .section-heading{max-width:850px;margin-bottom:30px}
.school-life .section-heading>p:not(.kicker){color:var(--color-muted)}
.school-life-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:38px;align-items:start}
.school-life-grid figure{margin:0}
.school-life-grid img{display:block;width:auto;max-width:100%;height:auto}
.school-events{border-top:1px solid var(--color-brand)}
.school-events>a{display:block;padding:20px 0;border-bottom:1px solid var(--color-border);text-decoration:none}
.school-events time{display:block;font:13px/1.6 var(--font-mono);color:var(--color-muted);margin-bottom:8px}
.school-events strong,.school-events h3{display:block;font:850 26px/1.22 var(--font-heading);letter-spacing:-.02em;margin:0}
.school-events span{display:block;font-size:15px;color:var(--color-muted);margin-top:9px}
.school-events>a:hover strong{text-decoration:underline}
.school-events .text-link{font-size:15px;font-weight:800}
.not-found .kicker{color:var(--color-attention)}

@media(max-width:1100px){.masthead nav{justify-content:flex-start;flex:initial}
.front-workshop h1{font-size:clamp(38px,4.8vw,54px)}
.journey{gap:28px;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr)}
}

@media(max-width:700px){.archive-notice{display:block;padding:14px 6vw}
.archive-range{display:block;margin-top:8px}
.front-workshop{padding:30px 6vw 34px;border-left-width:6px}
.front-workshop h1{font-size:clamp(34px,9.5vw,54px)}
.front-workshop h1 br{display:initial}
.front-workshop .hero-last-line{font-size:.79em}
.journey{display:block}
.journey .section-heading h2{font-size:32px}
.station-list{margin-top:26px}
.station-list strong{font-size:26px}
.station-list span{font-size:15px}
.school-life-grid{grid-template-columns:1fr;gap:28px}
.school-events strong,.school-events h3{font-size:25px}
}
.school-events .publication-row{display:grid;grid-template-columns:minmax(0,1fr) 24px;gap:0 16px}.school-events .publication-row time,.school-events .publication-row h3{grid-column:1}.school-events .publication-row>span{grid-column:2;grid-row:1/3;align-self:center;margin:0;color:var(--color-brand)}
/* Source-bound reference: examples use production component classes. */
.kit-page{max-width:1200px;margin:auto;padding:44px 4vw 80px}.kit-page>h1{max-width:18ch}.kit-index{display:flex;gap:8px 24px;flex-wrap:wrap;margin:30px 0 46px;border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);padding:12px 0}.kit-index a{display:flex;align-items:center;min-height:44px;font-size:15px;font-weight:750}.kit-spec{border-top:3px solid var(--color-brand);padding-top:22px;margin-top:54px;min-width:0}.kit-spec>header h2,.kit-spec>h2{margin-top:10px}.kit-example{min-width:0;max-width:100%;margin:28px 0}.kit-example>p,.kit-example>ul,.kit-example>ol{max-width:var(--measure-prose)}.kit-example .contents{position:static;max-width:600px}.kit-contract{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 32px;margin:32px 0 22px;padding-top:18px;border-top:1px solid var(--color-border)}.kit-contract>div{border-bottom:1px solid var(--color-border);padding-bottom:16px;min-width:0}.kit-contract dt{font:750 13px/1.5 var(--font-mono);color:var(--color-muted);margin-bottom:8px}.kit-contract dd{font-size:15px;line-height:1.65;margin:0;overflow-wrap:anywhere}.kit-state{border-left:4px solid var(--color-attention);padding:10px 20px;margin:24px 0;background:var(--color-surface-muted)}.kit-state h3{font-size:26px;margin-top:10px}.kit-state p{max-width:var(--measure-prose)}.kit-state .text-link{display:inline-block;margin:16px}.kit-scale{display:flex;flex-wrap:wrap;align-items:start;gap:12px;margin:24px 0}.kit-scale>div{border:1px solid var(--color-border);background:var(--color-surface-muted)}.kit-page code{font:13px/1.6 var(--font-mono)}.kit-example .publication-row{display:grid;grid-template-columns:minmax(0,1fr) 24px;gap:0 16px;padding:20px 0;border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);text-decoration:none}.kit-example .publication-row time{font:13px/1.6 var(--font-mono);color:var(--color-muted);grid-column:1}.kit-example .publication-row h3{grid-column:1;margin:8px 0;font-size:28px}.kit-example .publication-row>span{grid-column:2;grid-row:1/3;align-self:center}
@media(max-width:700px){.kit-page{padding:32px 6vw 52px}.kit-index{gap:4px 20px;margin-bottom:34px}.kit-spec{margin-top:40px}.kit-contract{grid-template-columns:1fr;gap:16px}.kit-state{padding:10px 16px}.kit-state .text-link{margin:16px 0;display:block}}
/* Reviewed mobile header: visible navigation and native theme control share space. */
@media(max-width:700px){.masthead{display:grid;grid-template-columns:minmax(0,1fr) 44px;align-items:center;gap:8px 14px;padding:12px 6vw}.masthead .brand{grid-column:1;grid-row:1;font-size:29px;min-width:0}.masthead .brand small{display:none}.masthead nav{grid-column:1/-1;grid-row:2;width:100%;gap:0 18px}.masthead nav a{min-height:44px}}
#kit-actions .kit-example{display:flex;flex-wrap:wrap;align-items:center;gap:16px 22px}#kit-actions .kit-example>.button{margin:0;max-width:100%}#kit-actions .kit-example>.text-link{display:block;flex:0 0 auto;max-width:100%;width:max-content}
.brand-mark{display:block;flex:none;width:48px;height:48px}.search-fallback{max-width:var(--measure-prose);margin:28px 0;padding:12px 18px;border-left:4px solid var(--color-attention);background:var(--color-surface-muted);font-size:17px;line-height:1.7}.search-fallback a{display:inline-flex;align-items:center;min-height:44px;margin-right:18px;font-weight:750}.search-ready .search-fallback{display:none}html:not(.search-ready) .search-form,html:not(.search-ready) #search-status{display:none}
@media(max-width:700px){.masthead .brand-mark{width:40px;height:40px}}

/* A single, quiet theme action; the icon represents the current mode. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.theme-switch{display:grid;place-items:center;flex:none;width:44px;height:44px;padding:0;border:0;border-radius:0;background:transparent;color:var(--color-text)}
.theme-switch svg{display:block;width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.theme-switch:hover{background:var(--color-surface-muted);color:var(--color-brand)}
html:not([data-theme]) .theme-switch{display:none}
@media(max-width:700px){.masthead>.theme-switch{grid-column:2;grid-row:1}.masthead .brand{font-size:28px}.masthead nav{grid-column:1/-1;grid-row:2}}

button.theme-switch [data-theme-icon]{display:none}
:root[data-theme-choice="system"] button.theme-switch [data-theme-icon="system"],:root[data-theme-choice="light"] button.theme-switch [data-theme-icon="light"],:root[data-theme-choice="dark"] button.theme-switch [data-theme-icon="dark"]{display:block}
:root:not([data-theme]) button.theme-switch{display:none}