/* A font by Jos Buivenga (exljbris) -> www.exljbris.com */
@font-face{font-family:'Fontin';src:url('./fonts/fontin/Fontin-Regular.ttf') format('truetype');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:'Fontin';src:url('./fonts/fontin/Fontin-Bold.ttf') format('truetype');font-style:normal;font-weight:700;font-display:swap}
@font-face{font-family:'Fontin';src:url('./fonts/fontin/Fontin-Italic.ttf') format('truetype');font-style:italic;font-weight:400;font-display:swap}
:root{color-scheme:light;--page:#f7f9fc;--surface:#fff;--ink:#203449;--muted:#5b6c7e;--line:#dce4ec;--blue:#21679c;--soft:#e9f2f9;--hover:#f0f6fb;--heading-font:Georgia,'Roboto',serif;--body-font:'Fontin','Roboto',serif;--shadow:0 12px 40px #263e5610}
:root[data-theme=dark]{color-scheme:dark;--page:#1b222b;--surface:#252e39;--ink:#edf4fa;--muted:#aebdcb;--line:#3b4857;--blue:#9dcef2;--soft:#2a3c4e;--hover:#2b3947;--shadow:0 12px 40px #0002}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:35px}body{margin:0;background:var(--page);color:var(--ink);font:15px/1.6 var(--body-font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select{font:inherit;color:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button,select{touch-action:manipulation}button{background:none}a,button{transition:background .18s,color .18s,border-color .18s,transform .18s}img,svg{vertical-align:middle}img{max-width:100%;height:auto}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.13}button{border:0}button:disabled{cursor:default}::selection{background:#b9d9f0;color:#193149}:focus-visible{outline:3px solid var(--blue);outline-offset:5px;border-radius:4px}[hidden]{display:none!important}.wrap{width:min(1160px,calc(100% - 96px));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.skip-link{position:fixed;left:16px;top:-80px;padding:12px 18px;background:var(--surface);z-index:99}.skip-link:focus{top:12px}.icon{display:inline-block;width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.arrow{transition:transform .2s}a:hover .arrow{transform:translateX(4px)}.eyebrow{font-size:10px;font-weight:650;letter-spacing:.17em;text-transform:uppercase;color:var(--blue)}.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}.brand img{width:36px;height:36px;object-fit:contain}.brand-name{font-size:19px;font-weight:650;letter-spacing:-.6px;line-height:1.1}.brand-name small{display:block;font-size:10px;font-weight:500;letter-spacing:.03em;color:var(--muted);margin-top:5px}.header{height:86px;display:flex;align-items:center;justify-content:space-between;gap:30px}.header nav{display:flex;align-items:center;gap:30px;font-size:13px}.header nav a:hover{color:var(--blue)}.header-actions{display:flex;align-items:center;gap:15px}.pill-link{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:11px 20px;border-radius:99px;background:var(--ink);color:var(--page);font-size:12px;font-weight:600}.pill-link:hover{opacity:.88}.theme-toggle{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;background:var(--surface)}.theme-toggle:hover{background:var(--soft)}.theme-toggle .sun{display:none}:root[data-theme=dark] .theme-toggle .sun{display:block}:root[data-theme=dark] .theme-toggle .moon{display:none}.search-box{display:flex;align-items:center;gap:13px;padding:0 19px;min-height:58px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}.search-box:focus-within{outline:2px solid var(--blue);outline-offset:3px}.search-box>.icon{color:var(--blue);width:21px;height:21px}.search-box input{width:100%;min-width:0;border:0;outline:0;background:transparent;font-size:14px;line-height:1.5;height:54px}.search-box input::placeholder{color:var(--muted);opacity:1}.search-box input::-webkit-search-cancel-button{cursor:pointer}.search-box .key{border:1px solid var(--line);border-radius:5px;min-width:23px;height:24px;color:var(--muted);text-align:center;font-size:12px;line-height:22px}.filter-chips{display:flex;gap:8px;flex-wrap:wrap}.filter-chips button{border:1px solid var(--line);border-radius:99px;min-height:39px;padding:7px 16px;font-size:12px;background:var(--surface);white-space:nowrap}.filter-chips button:hover{border-color:var(--blue)}.filter-chips button[aria-pressed=true]{background:var(--ink);color:var(--page);border-color:var(--ink)}.new-tag{display:inline-flex;align-items:center;border-radius:4px;background:var(--soft);color:var(--blue);padding:2px 6px;font:600 9px/1.5 var(--body-font);letter-spacing:.04em;white-space:nowrap}.empty-state{text-align:center;padding:70px 24px;border:1px dashed var(--line);border-radius:12px;background:var(--surface)}.empty-state h3{font:30px var(--heading-font);margin-bottom:10px}.empty-state p{color:var(--muted);margin-bottom:20px}.empty-state button{border-bottom:1px solid var(--blue);color:var(--blue);padding:7px 0;font-weight:600}.result-count{color:var(--muted);font-size:12px}.footer{padding:30px 0 85px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.footer-top{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:24px}.footer-top .brand{color:var(--ink)}.footer-links{display:flex;gap:25px}.footer-links a:hover{text-decoration:underline;text-underline-offset:4px}.legal{font-size:10px;line-height:1.7}.legal span{display:block}.math{--category:#376899;--tint:#edf3fb}.science{--category:#427a6d;--tint:#eaf4ef}.social{--category:#9b754c;--tint:#f8f1e6}.arts{--category:#876587;--tint:#f4eef6}:root[data-theme=dark] .math{--category:#9bc9f0;--tint:#2b4056}:root[data-theme=dark] .science{--category:#9acbbb;--tint:#2c443f}:root[data-theme=dark] .social{--category:#dfbf97;--tint:#4a4034}:root[data-theme=dark] .arts{--category:#d4b0d5;--tint:#443648}
@media(max-width:850px){.wrap{width:calc(100% - 40px)}.header{height:76px;gap:15px}.header nav{gap:18px}.header-actions>.pill-link{display:none}.header nav .optional-nav{display:none}}
@media(max-width:520px){.wrap{width:calc(100% - 36px)}.header nav{display:none}.brand-name{font-size:18px}.brand img{width:32px;height:32px}.eyebrow{font-size:9px;letter-spacing:.13em}.footer-top{align-items:flex-start;flex-direction:column}.footer-links{gap:20px;flex-wrap:wrap}.search-box{padding-inline:15px}.filter-chips{gap:6px}.filter-chips button{padding:8px 12px;font-size:11px}.search-box .key{display:none}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}