:root{color-scheme:light}
.theme-toggle{position:fixed;top:18px;right:20px;z-index:10;display:flex;align-items:center;justify-content:center;gap:8px;min-width:96px;box-shadow:0 2px 12px rgba(24,49,40,.12)}
html[data-theme="dark"]{color-scheme:dark;color:#e4ece7;background:#111915;--green:#91cbb0;--muted:#a6b5ac;--line:#3a4a42}
html[data-theme="dark"] body{background:#111915;color:#e4ece7}
html[data-theme="dark"] aside,html[data-theme="dark"] .card{background:#19241f}
html[data-theme="dark"] button,html[data-theme="dark"] .btn,html[data-theme="dark"] input[type=number],html[data-theme="dark"] input[type=search],html[data-theme="dark"] select{background:#202e27;color:#dce9e1;border-color:#42554b}
html[data-theme="dark"] button:hover,html[data-theme="dark"] .btn:hover{background:#293b32;border-color:#648170}
html[data-theme="dark"] button.primary,html[data-theme="dark"] .btn.primary{background:#91cbb0;color:#102019;border-color:#91cbb0}
html[data-theme="dark"] nav a{color:#b2c0b8}
html[data-theme="dark"] nav a.active{background:#294136;color:#b6e1cd}
html[data-theme="dark"] .hero{background:#24372d;border-color:#385145}
html[data-theme="dark"] .hero p,html[data-theme="dark"] .source blockquote{color:#bdc9c1}
html[data-theme="dark"] .topic-row,html[data-theme="dark"] .activity{border-color:#324139}
html[data-theme="dark"] .bar{background:#304139}
html[data-theme="dark"] .bar span{background:#8dbb84}
html[data-theme="dark"] .tag{background:#2b3b32;color:#c6d5cc}
html[data-theme="dark"] .tag.generated{background:#3b334a;color:#d6c6ec}
html[data-theme="dark"] .option{background:#1f2c26;color:#e0e9e3}
html[data-theme="dark"] .letter{background:#26362e;border-color:#52675b;color:#e8f0eb}
html[data-theme="dark"] .option.selected{background:#294438;border-color:#78ae91}
html[data-theme="dark"] .option.correct,html[data-theme="dark"] .feedback{background:#1d3b2c;border-color:#47775d}
html[data-theme="dark"] .option.incorrect,html[data-theme="dark"] .feedback.wrong{background:#462b28;border-color:#935d56}
html[data-theme="dark"] .source{border-color:#405047}
html[data-theme="dark"] .topic-picks label{background:#202e27}
html[data-theme="dark"] .notice{background:#403a25;border-color:#75683b}
html[data-theme="dark"] code{background:#26342d}
html[data-theme="dark"] #notice{background:#d6eadd;color:#17231d}
@media(max-width:700px){.theme-toggle{top:15px;right:16px;min-width:44px;width:44px;height:44px;padding:0;border-radius:50%;font-size:19px}.theme-label{display:none}.brand{padding-right:52px}}