:root{--bg: #f4f6f9;--surface: #ffffff;--ink: #1a2330;--muted: #5b6675;--border: #d9dee6;--brand: #1e3a5f;--brand-ink: #ffffff;--correct: #1b7f4b;--correct-bg: #e6f5ec;--wrong: #b3261e;--wrong-bg: #fdecea;--partial: #8a6d00;--partial-bg: #fdf6e3;--pending: #4a5568;--pending-bg: #eef1f5;--radius: 14px;--tap: 48px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);font-size:18px;line-height:1.5;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}.container{max-width:780px;margin:0 auto;padding:20px 18px 96px}h1{font-size:1.7rem;margin:0 0 4px}h2{font-size:1.25rem}.muted{color:var(--muted)}.card{background:var(--surface);border:1px solid 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