@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700;900&family=Space+Mono:wght@400;700&family=Zen+Maru+Gothic:wght@700;900&display=swap");:root{--paper-bg:#f4ede2;--paper-sheet:#fffdf9;--paper-warm:#faf3e8;--paper-blush:#fff2ed;--paper-blue:#eff6ff;--paper-yellow:#fff8dc;--ink:#221e1c;--ink-soft:#5c5049;--ink-muted:#8c7b70;--line-warm:#dfd1c2;--coral:#e85a3f;--coral-light:#fad4c8;--draw-blue:#2563eb;--draw-blue-soft:#dbeafe;--derp-yellow:#fbc01e;--memo-blue:#0066df;--line-green:#06c755;--font-display:"Zen Maru Gothic","Noto Sans TC","PingFang TC",sans-serif;--font-body:"Noto Sans TC","PingFang TC",-apple-system,sans-serif;--font-mono:"Space Mono",ui-monospace,SFMono-Regular,monospace}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body,html{margin:0;padding:0;min-height:100%;background-color:var(--paper-bg);background-image:radial-gradient(#d8c8b6 1.15px,transparent 0),radial-gradient(circle at 50% 0,#fff7ef 0,transparent 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