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.hkbu-presentation{--background:#ffe9d7;--foreground:#0a0a0a;--card:#fff;--card-foreground:#0a0a0a;--primary:#171717;--primary-foreground:#fafafa;--secondary:#f5f5f5;--secondary-foreground:#171717;--muted:#f5f5f5;--muted-foreground:#737373;--accent:#f5f5f5;--accent-foreground:#171717;--border:#e5e5e5;--input:#e5e5e5;--ring:#a1a1a1;--radius:.625rem;--presentation-background-color:#ffe9d7;--presentation-main-color:#001a22;--presentation-heading-color:#723311;--presentation-link-color:#994920;--presentation-link-color-hover:#e97c48;--presentation-accent-color:#e97c48;--hkbu-main-color:#2c3e50;--hkbu-accent-color:#d4af7a;--hkbu-heading-font:var(--font-langar), "Inter", sans-serif}@supports (color:lab(0% 0 0)){.hkbu-presentation{--background:lab(94.0275% 10.1204 16.0984);--foreground:lab(2.75381% 0 0);--card:lab(100% 0 0);--card-foreground:lab(2.75381% 0 0);--primary:lab(7.78201% -.0000149012 0);--primary-foreground:lab(98.26% 0 0);--secondary:lab(96.52% -.0000298023 .0000119209);--secondary-foreground:lab(7.78201% -.0000149012 0);--muted:lab(96.52% -.0000298023 .0000119209);--muted-foreground:lab(48.496% 0 0);--accent:lab(96.52% -.0000298023 .0000119209);--accent-foreground:lab(7.78201% -.0000149012 0);--border:lab(90.952% 0 -.0000119209);--input:lab(90.952% 0 -.0000119209);--ring:lab(66.128% -.0000298023 .0000119209);--presentation-background-color:lab(94.0275% 10.1204 16.0984);--presentation-main-color:lab(7.43282% -9.09188 -11.6031);--presentation-heading-color:lab(29.6911% 27.0723 33.4589);--presentation-link-color:lab(41.158% 32.3581 39.455);--presentation-link-color-hover:lab(64.1759% 40.0191 47.4822);--presentation-accent-color:lab(64.1759% 40.0191 47.4822)}}.dark .hkbu-presentation{--hkbu-main-color:#f9f4f0}.hkbu-presentation{font-family:var(--font-langar), sans-serif;background-color:var(--presentation-background-color);color:var(--foreground)}.hkbu-presentation *{border-color:var(--border)}.hkbu-presentation .text-balance{text-wrap:balance}.hkbu-presentation .title-slide{background:linear-gradient(135deg, var(--presentation-background-color) 0%, color-mix(in oklch, var(--presentation-background-color), var(--presentation-accent-color) 3%) 100%)}.hkbu-presentation .title-slide h1{color:var(--presentation-heading-color);background:linear-gradient(135deg, var(--presentation-heading-color), color-mix(in oklch, var(--presentation-heading-color), var(--presentation-accent-color) 30%));-webkit-text-fill-color:transparent;background-size:200% 200%;-webkit-background-clip:text;background-clip:text;animation:8s ease-in-out infinite hkbu-gradient-shift}.hkbu-presentation .title-slide h2{color:var(--presentation-accent-color)}@keyframes hkbu-gradient-shift{0%,to{background-position:0%}50%{background-position:100%}}.hkbu-presentation .title-slide .title-main{font-size:clamp(2.5rem,6vw,5rem);font-family:var(--hkbu-heading-font);text-align:center;margin:0;font-weight:700;line-height:1.1}.hkbu-presentation .title-slide .title-subtitle{font-size:clamp(1.5rem,4vw,3rem);font-family:var(--hkbu-heading-font);text-align:center;opacity:.9;margin:0;font-weight:500;line-height:1.3}.hkbu-presentation .title-slide .title-content{flex-direction:column;justify-content:center;align-items:center;gap:2rem;max-width:85%;margin:0 auto;display:flex}.hkbu-presentation .title-slide .title-footer{z-index:10;justify-content:space-between;align-items:flex-end;height:10vh;display:flex;position:absolute;bottom:20%;left:10%;right:10%}.hkbu-presentation .title-slide .footer-logo{flex-shrink:0}.hkbu-presentation .title-slide .footer-logo img{opacity:.9;display:block}.hkbu-presentation .title-slide .footer-info{text-align:right}.hkbu-presentation .title-slide .footer-info .author{color:var(--hkbu-main-color);margin:0 0 .25rem;font-size:30px;font-weight:500}.hkbu-presentation .title-slide .footer-info .date{opacity:.7;color:var(--hkbu-main-color);margin:0;font-size:20px}.hkbu-presentation .theme-toggle{z-index:1000;border:2px solid var(--hkbu-accent-color);cursor:pointer;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;transition:all .3s;display:flex;position:fixed;bottom:20px;right:20px;box-shadow:0 4px 12px #0000001a}.hkbu-presentation .theme-toggle:hover{transform:scale(1.05);box-shadow:0 6px 20px #00000026}.hkbu-presentation .theme-toggle svg{width:24px;height:24px;stroke:var(--hkbu-main-color);transition:stroke .3s}.dark .hkbu-presentation .theme-toggle{border-color:var(--hkbu-accent-color);background:#2c3e50f2}@media (max-width:768px){.hkbu-presentation .title-slide .title-footer{bottom:2rem;left:2rem;right:2rem}.hkbu-presentation .theme-toggle{width:40px;height:40px;bottom:15px;right:15px}.hkbu-presentation .theme-toggle svg{width:20px;height:20px}}.hkbu-presentation .node__leaf>circle{fill:#bf3415}.hkbu-presentation .node__branch>circle,.hkbu-presentation .node__root>circle{fill:#afb9b8}.hkbu-presentation .node__leaf>circle:hover,.hkbu-presentation .node__branch>circle:hover,.hkbu-presentation .node__root>circle:hover{fill:gold}.hkbu-presentation .slide-loading{height:100vh;color:var(--presentation-main-color);opacity:.7;justify-content:center;align-items:center;font-size:1.2rem;display:flex}