:root{color-scheme:light;--bg: #FFF6EB;--surface: #FFE0B2;--border: #FF7A00;--orange: #FF7A00;--orange-hover: #E56E00;--text: #000000;--muted: #3A2A1C;--ink: #000000;--font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--radius: 16px;--frame: 3px solid #FF7A00;--app-h: 100vh;--app-top: 0px}*{box-sizing:border-box}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}html,body{height:100%;margin:0;overflow:hidden;overscroll-behavior:none;background:var(--bg);color:var(--text);font-family:var(--font)}.app{position:fixed;left:0;right:0;top:var(--app-top);height:var(--app-h);display:flex;flex-direction:column;overflow:hidden;background:var(--bg);padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) 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var(--border);border-radius:12px;padding:8px;margin-top:8px;position:relative}.toast{position:absolute;left:50%;bottom:12px;transform:translate(-50%);background:var(--orange);color:#0b0b0b;font-weight:700;border-radius:999px;padding:8px 14px;z-index:3;pointer-events:none}.composer{flex:0 0 auto;position:relative;padding:0 0 calc(6px + env(safe-area-inset-bottom));background:var(--bg);display:flex;flex-direction:column;gap:0}.bottom-row{display:flex;flex-direction:column;align-items:stretch;gap:6px;padding:0 12px 2px}.control-line{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-start;gap:8px;width:100%}.drops{display:flex;flex:0 1 auto;flex-wrap:wrap;gap:8px}.drop{position:relative;flex:0 0 auto;width:auto;max-width:none}.drop-btn{width:auto;white-space:nowrap;padding:0 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#FF7A00;border-radius:16px;box-shadow:0 18px 60px #00000073;writing-mode:horizontal-tb}.math-pop[hidden]{display:none}.working{margin:8px 4px;font-size:18px;font-weight:800;line-height:1.4}.stable-badge{display:inline-block;margin-left:8px;background:gold;color:#1a1200;border-radius:999px;font-size:12px;font-weight:800;padding:2px 8px}.support-link{color:#ffe0b2;font-size:14px;font-weight:800;font-style:italic;text-decoration:underline;text-underline-offset:2px}@media(max-width:720px){.drop{flex:0 0 auto;width:auto;max-width:none}.maths{flex-basis:100%;grid-template-columns:repeat(2,minmax(0,1fr))}}@media(min-width:800px){.chat-box{padding:36px 30px 38px}.composer{padding:4px 0 calc(8px + env(safe-area-inset-bottom))}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}