:root{--tc-bg:#f4f7fb;--tc-surface:#ffffff;--tc-surface-2:#edf3f9;--tc-text:#16314c;--tc-muted:#63788e;--tc-line:#d7e3ee;--tc-accent:#0870df;--tc-on-accent:#fff;--tc-brand-blue:#1284ff;--tc-accent-hover:#005dc9;--tc-accent-soft:#e4f1ff;--tc-cyan:#14d4ee;--tc-shadow:0 16px 48px #16314c0d;color-scheme:light}
:root[data-theme=dark]{--tc-bg:#232a33;--tc-surface:#2c3540;--tc-surface-2:#343f4c;--tc-text:#edf5fc;--tc-muted:#a7b8c8;--tc-line:#465567;--tc-accent:#56abff;--tc-on-accent:#10283d;--tc-accent-hover:#83c3ff;--tc-accent-soft:#263f58;--tc-cyan:#21d1e5;--tc-shadow:0 16px 48px #10182025;color-scheme:dark}
:root[data-theme=dark] .brand-light,:root[data-theme=light] .brand-dark{display:none!important}
[data-theme-toggle]{flex:none;display:inline-grid;place-items:center;width:44px;height:44px;padding:0;border:1px solid var(--tc-line);border-radius:14px;background:var(--tc-surface);color:var(--tc-text);transition:background .2s,border-color .2s,transform .2s}
[data-theme-toggle]:hover{background:var(--tc-accent-soft);border-color:var(--tc-accent)}
[data-theme-toggle] svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.7}
[data-theme-select]{color:var(--tc-text);background:var(--tc-surface);border-color:var(--tc-line)}
@media(prefers-reduced-motion:reduce){[data-theme-toggle]{transition:none}}