:root{--color-bg: #f6f9fc;--color-surface: #ffffff;--color-text: #1a2332;--color-muted: #5a6b7d;--color-accent: #0d6b7a;--color-accent-soft: #e6f3f5;--color-border: #d8e2ea;--font: "Noto Sans TC", "Noto Sans", system-ui, sans-serif;--font-en: "Noto Sans", "Noto Sans TC", system-ui, sans-serif;--radius: 12px;--shadow: 0 8px 24px rgba(26, 35, 50, .08);--focus: 0 0 0 3px rgba(13, 107, 122, .45)}*,*:before,*:after{box-sizing:border-box}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{margin:0;font-family:var(--font);font-size:1rem;line-height:1.65;color:var(--color-text);background:var(--color-bg)}html.lang-en body{font-family:var(--font-en)}.skip-link{position:absolute;left:-9999px;z-index:999;padding:.5rem 1rem;background:var(--color-accent);color:#fff;text-decoration:none;border-radius:4px}.skip-link:focus{left:1rem;top:1rem}.inner{width:min(1100px,100% - 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.section-lead{margin-bottom:1rem}.gamification-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}.game-card{display:flex;flex-direction:column;gap:.75rem;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;text-decoration:none;padding:.65rem;transition:transform .15s,box-shadow .15s}.game-card:hover{transform:translateY(-2px);box-shadow:0 12px 32px #1a23321f}.game-card:focus-visible{outline:none;box-shadow:var(--shadow),var(--focus)}.game-card img{width:100%;height:auto;aspect-ratio:16 / 9;border-radius:8px;background:var(--color-accent-soft);object-fit:cover;pointer-events:none}.game-card .btn{width:100%;pointer-events:none}@media(max-width:640px){.qrcode-controls{flex-direction:column;align-items:stretch}#qrcode-canvas{width:min(72vw,220px);height:min(72vw,220px)}}