html[data-season=halloween]{--color-pulse-cyan: #ff7a1a;--color-pulse-signal: #ff7a1a;--color-pulse-magenta: #9b4dff;--color-pulse-amber: #ffb02e;--gradient-brand: linear-gradient(90deg, #ff7a1a, #9b4dff);--color-pulse-ink: #0d0a12;--color-pulse-deep: #080509;--color-pulse-surface: #0f0b14;--color-pulse-surface-raised: #17101e;--color-pulse-slate: #150f1b;--color-pulse-panel: #1c1424}html[data-season=halloween] ::selection{background:#ff7a1a59}html[data-season=halloween] body{background:radial-gradient(circle at 88% 120px,rgb(255 228 180 / .13) 0 34px,rgb(255 150 60 / .07) 36px,transparent 170px),radial-gradient(ellipse 60% 40% at 50% 0%,rgb(255 122 26 / .12),transparent 70%),radial-gradient(ellipse 50% 40% at 100% 100%,rgb(155 77 255 / .12),transparent 70%),var(--color-pulse-ink);background-attachment:fixed}html[data-season=halloween]:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:34;opacity:.55;background:url("data:image/svg+xml,%3Csvg 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body{background:radial-gradient(ellipse 60% 40% at 50% 0%,rgb(255 209 102 / .14),transparent 70%),radial-gradient(ellipse 50% 40% at 0% 100%,rgb(255 143 184 / .1),transparent 70%),var(--color-pulse-ink);background-attachment:fixed}html[data-season=newyear] body:before,html[data-season=newyear]:before{content:"";position:fixed;top:6vh;width:220px;height:220px;pointer-events:none;z-index:35;border-radius:50%;background:repeating-conic-gradient(var(--fw, #ffd166) 0 3deg,transparent 3deg 22.5deg);-webkit-mask-image:radial-gradient(circle,transparent 28%,#000 30%,#000 62%,transparent 66%);mask-image:radial-gradient(circle,transparent 28%,#000 30%,#000 62%,transparent 66%);opacity:0;animation:ny-burst 4.5s ease-out infinite}html[data-season=newyear] body:before{left:4vw}html[data-season=newyear]:before{--fw: #ff8fb8;right:4vw;animation-delay:2.2s}@keyframes ny-burst{0%{transform:scale(.1);opacity:.9}60%{opacity:.7}to{transform:scale(1);opacity:0}}html[data-season=newyear] 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body:before{content:"";position:fixed;left:0;right:0;bottom:0;height:26px;pointer-events:none;z-index:34;opacity:.35;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 26'%3E%3Cpath d='M0 14c15-12 30-12 45 0s30 12 45 0 22-10 30-4v16H0z' fill='%232dd4d4'/%3E%3C/svg%3E") bottom left / 120px 26px repeat-x;animation:summer-waves 7s linear infinite}@keyframes summer-waves{to{background-position-x:120px}}html[data-season=summer]:after{content:"";position:fixed;bottom:14px;left:-60px;width:36px;height:33px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 44 40'%3E%3Cpath d='M21 2v28' stroke='%23f2efe8' stroke-width='1.4'/%3E%3Cpath d='M23 5c9 6 13 14 14 22H23z' fill='%23f2efe8'/%3E%3Cpath d='M19 9C13 14 10 20 9 27h10z' fill='%23ff7a59'/%3E%3Cpath d='M21 2l6 2.5-6 2.5z' fill='%232dd4d4'/%3E%3Cpath d='M3 30h38l-6 8H9z' fill='%23ffd166'/%3E%3C/svg%3E") center / contain 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at 20px 30px,#ffc83d,transparent),radial-gradient(3px 3px at 140px 80px,#c44dff,transparent),radial-gradient(2.5px 2.5px at 80px 150px,#00d2ff,transparent),radial-gradient(3px 3px at 180px 20px,#fff,transparent),radial-gradient(3px 3px at 60px 110px,#ff8fb8,transparent),radial-gradient(2.5px 2.5px at 210px 130px,#ffc83d,transparent),radial-gradient(3px 3px at 120px 230px,#00d2ff,transparent);background-size:200px 200px,200px 200px,200px 200px,200px 200px,300px 300px,300px 300px,300px 300px;opacity:.7;animation:ny-confetti 12s linear infinite}html[data-season=anniversary] body:after{content:"";position:fixed;left:0;right:0;top:100vh;height:90px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 300 90'%3E%3Cg transform='translate(40 4)'%3E%3Cpath d='M0 26Q-3 34 2 40T0 56' stroke='%23ffffff' stroke-opacity='.5' fill='none'/%3E%3Cellipse cy='12' rx='10' ry='13' fill='%2300d2ff'/%3E%3Cpath d='M-2 27h4l-2-3z' fill='%2300d2ff'/%3E%3Cellipse cx='-4' 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14px;white-space:nowrap;pointer-events:none;font:700 14px/1.4 var(--font-display, sans-serif);letter-spacing:.2em;color:#ffc83d;background:#0d0b14b3;border:1px solid rgb(255 200 61 / .35);z-index:35;animation:ny-glow 2.4s ease-in-out infinite}