.header-tools{display:flex;align-items:center;gap:8px;flex:none;margin-left:auto}
.language-toggle{min-height:38px;padding:7px 10px;background:transparent;color:inherit;border:1px solid #c7cec8;border-radius:20px;font:600 12px/1.2 system-ui;white-space:nowrap;cursor:pointer}
html[data-theme=dark] .language-toggle{border-color:#69786e;color:#f5f1e9}
html[lang=en] .intro h1{letter-spacing:-1.5px}
@media(max-width:650px){header{gap:8px}.header-tools{gap:5px}.language-toggle{padding:7px;font-size:11px}header .brand{font-size:24px}.brand-symbol{width:30px;height:30px;margin-right:5px}header .demo-badge{display:none}}
@media(max-width:550px){header:has(>nav a){position:relative;padding-right:120px}header:has(>nav a) .header-tools{position:absolute;right:16px;top:20px}}