:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--color-bg:#f5f5fa;--color-surface:#fff;--color-border:#e3e3ee;--color-text:#1f2430;--color-text-muted:#6b7280;--color-accent:#6b5bd6;--color-accent-soft:#efeafc;--color-danger:#d64545;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-sm:0 1px 3px #14142814;--shadow-md:0 6px 20px #1414281a;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif}*{box-sizing:border-box}html,body{height:100%;margin:0}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased}#app{height:100vh}button{font-family:inherit}.math-popover{z-index:1000;background:var(--color-surface,#fff);border:1px solid var(--color-border,#e3e3ee);border-radius:var(--radius-md,10px);box-shadow:var(--shadow-md,0 6px 20px #14142826);min-width:260px;max-width:min(360px,100vw - 16px);padding:.75rem;position:fixed}.math-popover math-field{border:1px solid var(--color-border,#e3e3ee);border-radius:6px;width:100%;padding:.3rem .4rem;font-size:1.15rem}.math-popover-actions{justify-content:flex-end;margin-top:.5rem;display:flex}.math-popover-done{background:var(--color-accent,#6b5bd6);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:.35rem .8rem;font-size:.8rem;font-weight:600}.math-popover-done:hover{opacity:.9}