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8px;font-size:11px;font-weight:600;display:inline-flex}.input{width:100%;height:44px;font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--hairline-strong);border-radius:var(--radius-md);padding:0 16px}.input:focus{border-width:2px;border-color:var(--ink);outline:none;padding:0 15px}.code-block{background:var(--dark);color:var(--on-dark);border-radius:var(--radius-lg);padding:var(--sp-md);font-family:var(--font-mono);font-size:13px;line-height:1.6;overflow-x:auto}.alert{border-radius:var(--radius-md);padding:var(--sp-sm) var(--sp-base);border:1px solid #0000;font-size:14px}.alert--error{color:var(--error);border-color:var(--error);background:var(--error)}@supports (color:color-mix(in lab, red, red)){.alert--error{background:color-mix(in srgb, var(--error) 6%, transparent)}}.alert--success{color:var(--success);border-color:var(--success);background:var(--success)}@supports (color:color-mix(in lab, red, red)){.alert--success{background:color-mix(in srgb, var(--success) 6%, transparent)}}.theme-toggle{border:1px solid var(--hairline-strong);border-radius:var(--radius-md);background:var(--canvas);width:40px;height:40px;color:var(--ink);cursor:pointer;-webkit-tap-highlight-color:transparent;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:background-color .2s,border-color .2s,color .2s;display:inline-flex}.theme-toggle:hover{border-color:var(--accent);color:var(--accent)}.theme-toggle svg{width:20px;height:20px;display:block}.row{gap:var(--sp-xs);flex-wrap:wrap;align-items:center;display:flex}:not(pre)>code{font-family:var(--font-mono);background:var(--strong);color:var(--ink);border-radius:var(--radius-xs);padding:1px 5px;font-size:.9em}.explain-point{gap:var(--sp-sm);align-items:flex-start;display:flex}.explain-point+.explain-point{border-top:1px solid var(--hairline);padding-top:var(--sp-base)}.explain-point__num{border-radius:var(--radius-md);background:var(--accent);flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.explain-point__num{background:color-mix(in srgb, var(--accent) 12%, transparent)}}.explain-point__num{color:var(--accent);margin-top:1px;font-size:13px;font-weight:600}.explain-point__title{color:var(--ink);margin:0;font-size:15px;font-weight:600;line-height:1.5}.explain-point__body{color:var(--body);margin:4px 0 0;font-size:14.5px;line-height:1.75}.quiz-option{text-align:left;width:100%;padding:var(--sp-sm) var(--sp-base);border-radius:var(--radius-md);border:1px solid var(--hairline-strong);background:var(--card);color:var(--ink);font:inherit;cursor:pointer;align-items:flex-start;gap:10px;transition:border-color .18s,background-color .18s,color .18s,transform .12s;display:flex}.quiz-option:hover:not(:disabled):not(.is-selected){border-color:var(--ink);background:var(--canvas-soft)}.quiz-option:active:not(:disabled){transform:scale(.995)}.quiz-option:disabled{cursor:default}.quiz-option__radio{border:2px solid var(--muted);background:0 0;border-radius:9999px;flex-shrink:0;width:18px;height:18px;margin-top:2px;transition:border-color .18s,background-color .18s,box-shadow .18s}.quiz-option.is-selected{border-color:var(--accent);background:var(--accent)}@supports (color:color-mix(in lab, red, red)){.quiz-option.is-selected{background:color-mix(in srgb, var(--accent) 8%, transparent)}}.quiz-option.is-selected{box-shadow:inset 0 0 0 1px var(--accent)}.quiz-option.is-selected .quiz-option__radio{border-color:var(--accent);background:var(--accent);box-shadow:inset 0 0 0 3px var(--card)}.quiz-option.is-correct{border-color:var(--success);background:var(--success)}@supports (color:color-mix(in lab, red, red)){.quiz-option.is-correct{background:color-mix(in srgb, var(--success) 8%, transparent)}}.quiz-option.is-correct .quiz-option__radio{border-color:var(--success);background:var(--success);box-shadow:inset 0 0 0 3px var(--card)}.quiz-option.is-wrong{border-color:var(--error);background:var(--error)}@supports (color:color-mix(in lab, red, red)){.quiz-option.is-wrong{background:color-mix(in srgb, var(--error) 8%, transparent)}}.quiz-option.is-wrong .quiz-option__radio{border-color:var(--error);background:var(--error);box-shadow:inset 0 0 0 3px var(--card)}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}