:root{--color-surface:#f8f9ff;--color-surface-dim:#cedbef;--color-surface-bright:#f8f9ff;--color-surface-container-lowest:#ffffff;--color-surface-container-low:#eff4ff;--color-surface-container:#e5eeff;--color-surface-container-high:#dde9fd;--color-surface-container-highest:#d7e3f7;--color-on-surface:#101c2b;--color-on-surface-variant:#424751;--color-inverse-surface:#253140;--color-inverse-on-surface:#eaf1ff;--color-outline:#727782;--color-outline-variant:#c2c6d3;--color-surface-tint:#185faa;--color-primary:#00427d;--color-on-primary:#ffffff;--color-primary-container:#0a59a4;--color-on-primary-container:#b6d1ff;--color-inverse-primary:#a6c8ff;--color-secondary:#005cba;--color-on-secondary:#ffffff;--color-secondary-container:#5095fe;--color-on-secondary-container:#002d61;--color-tertiary:#314356;--color-on-tertiary:#ffffff;--color-tertiary-container:#485a6e;--color-on-tertiary-container:#bed1e9;--color-error:#ba1a1a;--color-on-error:#ffffff;--color-error-container:#ffdad6;--color-on-error-container:#93000a;--color-background:#eee;--color-alert-success:#5cb85c;--color-alert-danger:#d9534f;--color-alert-warning:#f0ad4e;--color-alert-info:#428bca;--font-family-base:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'Microsoft JhengHei','PingFang TC','Noto Sans TC',sans-serif;--font-family-mono:ui-monospace,'SF Mono',Menlo,Monaco,'Cascadia Code','Source Code Pro',monospace;--font-headline-lg:700 48px/1.20 var(--font-family-base);--font-headline-md:700 32px/1.25 var(--font-family-base);--font-headline-sm:700 24px/1.30 var(--font-family-base);--font-headline-sm-mobile:700 20px/1.30 var(--font-family-base);--font-body-lg:400 18px/1.70 var(--font-family-base);--font-body-md:400 16px/1.60 var(--font-family-base);--font-label-md:600 14px/1.40 var(--font-family-base);--font-caption:400 12.8px/1.50 var(--font-family-base);--space-unit:4px;--space-gutter:16px;--space-margin-mobile:20px;--space-margin-desktop:48px;--space-board-offset:-32px;--space-container-max:960px;--space-reading-width:720px;--radius-sm:0.25rem;--radius-default:0.5rem;--radius-md:0.75rem;--radius-lg:1rem;--radius-xl:1.5rem;--radius-full:9999px;--shadow-board:0 12px 15px 0 rgba(0, 0, 0, 0.12),0 17px 50px 0 rgba(0, 0, 0, 0.10);--shadow-board-hover:0 16px 24px 0 rgba(0, 0, 0, 0.14),0 22px 60px 0 rgba(0, 0, 0, 0.12);--shadow-nav:0 1px 0 0 var(--color-outline-variant);--shadow-card-hover:0 6px 12px 0 rgba(0, 0, 0, 0.08);--transition-default:0.2s ease-in-out;--transition-slow:0.3s ease;--transition-press-scale:0.96}@media (prefers-color-scheme:dark){:root{--color-surface:#101c2b;--color-surface-dim:#181f2b;--color-surface-bright:#253140;--color-surface-container-lowest:#0a1320;--color-surface-container-low:#18223a;--color-surface-container:#1e2c46;--color-surface-container-high:#25344f;--color-surface-container-highest:#2c3a55;--color-on-surface:#eaf1ff;--color-on-surface-variant:#c2c6d3;--color-inverse-surface:#eaf1ff;--color-inverse-on-surface:#253140;--color-outline:#8b919e;--color-outline-variant:#424751;--color-surface-tint:#a6c8ff;--color-primary:#a6c8ff;--color-on-primary:#003063;--color-primary-container:#004787;--color-on-primary-container:#d5e3ff;--color-secondary:#aac7ff;--color-on-secondary:#002d61;--color-secondary-container:#00458e;--color-on-secondary-container:#d7e3ff;--color-tertiary:#b5c8e0;--color-on-tertiary:#1c2d3f;--color-tertiary-container:#36485c;--color-on-tertiary-container:#d1e4fc;--color-error:#ffb4ab;--color-on-error:#690005;--color-error-container:#93000a;--color-on-error-container:#ffdad6;--color-background:#18223a}}*,::after,::before{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;font:var(--font-body-md);letter-spacing:.02em;background:var(--color-background);color:var(--color-on-surface);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img{max-width:100%;height:auto;display:block}a{color:var(--color-secondary);text-decoration:none;transition:color var(--transition-default)}a:hover{color:var(--color-surface-tint)}button{font:inherit;cursor:pointer}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:var(--radius-sm)}.skip-link{position:absolute;left:-9999px;top:0;background:var(--color-primary);color:var(--color-on-primary);padding:8px 16px;z-index:200}.skip-link:focus{left:0}.line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.custom-scrollbar::-webkit-scrollbar{width:6px}.custom-scrollbar::-webkit-scrollbar-track{background:0 0}.custom-scrollbar::-webkit-scrollbar-thumb{background:var(--color-outline-variant);border-radius:10px}