.ml-lang-switch{display:inline-flex;align-items:center;gap:3px;margin-left:12px;padding:3px;border:1px solid rgba(255,255,255,.38);border-radius:999px;background:rgba(16,19,22,.78);box-shadow:0 7px 18px rgba(0,0,0,.16);backdrop-filter:blur(10px);flex:0 0 auto}
body[data-i18n-page^="chapter-"]{--paper:#f3f0e7;background:var(--paper);color:var(--ink,#101316)}
.ml-lang-switch button{min-width:44px;border:0;border-radius:999px;padding:6px 10px;background:transparent;color:#fff;font:800 .72rem/1 "Trebuchet MS","Microsoft YaHei",sans-serif;letter-spacing:.03em;cursor:pointer;transition:background .18s,color .18s,transform .18s}
.ml-lang-switch button:hover{transform:translateY(-1px)}
.ml-lang-switch button[aria-pressed="true"]{background:#d9f257;color:#101316;box-shadow:0 2px 8px rgba(217,242,87,.28)}
.ml-lang-switch button:focus-visible{outline:3px solid #52d6df;outline-offset:2px}
html.lang-en body{font-family:"Trebuchet MS","Aptos","Microsoft YaHei",sans-serif}
html.lang-en h1,html.lang-en h2,html.lang-en .story-opening h2{letter-spacing:-.035em}
.ml-i18n-status{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:700px){.ml-lang-switch{margin-left:auto}.ml-lang-switch button{min-width:36px;padding:6px 8px}.ml-lang-switch button[data-locale="zh-CN"]{font-size:.68rem}.topbar .chapter-chip{display:none}.fit-layout>*,.lab-grid>*{min-width:0}}
@media(max-width:420px){.ml-lang-switch{gap:1px;padding:2px}.ml-lang-switch button{min-width:32px;padding:5px 6px}.topbar .progress-label,.topbar .progress{display:none}}
@media(prefers-reduced-motion:reduce){.ml-lang-switch button{transition:none}}