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#FF1493;--holiday-background: linear-gradient(135deg, #FF69B4 0%, #FF1493 100%);--holiday-accent: #FFFFFF}:root[data-holiday=情人节] .header{background:var(--holiday-background)}:root[data-holiday=情人节] .home-container{background:var(--holiday-background)}:root[data-holiday=圣诞节]{--holiday-primary: #DC143C;--holiday-secondary: #228B22;--holiday-background: linear-gradient(135deg, #DC143C 0%, #228B22 100%);--holiday-accent: #FFD700}:root[data-holiday=圣诞节] .header{background:linear-gradient(135deg,#dc143c,#228b22);box-shadow:0 4px 20px #dc143c4d}:root[data-holiday=圣诞节] .home-container{background:linear-gradient(135deg,#dc143c,#228b22)}:root[data-holiday=圣诞节] .gallery-container{background:linear-gradient(135deg,#f8f0f0,#e8f5e9)}:root[data-holiday=圣诞节]:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;pointer-events:none;z-index:9999;background-image:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><circle cx="20" cy="20" r="2" fill="%23FFD700" opacity="0.6"><animate attributeName="opacity" values="0.3;0.8;0.3" dur="2s" repeatCount="indefinite"/></circle><circle cx="80" cy="40" r="1.5" fill="%23FFD700" opacity="0.5"><animate attributeName="opacity" values="0.2;0.7;0.2" dur="3s" repeatCount="indefinite"/></circle><circle cx="50" cy="70" r="1" fill="%23FFD700" opacity="0.4"><animate attributeName="opacity" values="0.1;0.6;0.1" dur="2.5s" repeatCount="indefinite"/></circle></svg>');background-size:200px 200px;animation:snowFall 20s linear infinite;opacity:.3}@keyframes snowFall{0%{transform:translateY(-100px) translate(0)}to{transform:translateY(100vh) translate(100px)}}.holiday-theme:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;pointer-events:none;z-index:9999;opacity:.1;background-image:repeating-linear-gradient(45deg,transparent,transparent 10px,rgba(255,255,255,.1) 10px,rgba(255,255,255,.1) 20px);animation:holidayShimmer 3s infinite}@keyframes holidayShimmer{0%,to{opacity:.05}50%{opacity:.15}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}#root{min-height:100vh}:root{--holiday-primary: #667eea;--holiday-secondary: #764ba2;--holiday-background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--holiday-accent: #667eea}.holiday-theme{transition:all .5s ease}.holiday-theme .header,.holiday-theme .home-hero,.holiday-theme .btn-primary,.holiday-theme .create-album-toggle,.holiday-theme .upload-photo-button,.holiday-theme .album-button.active{background:var(--holiday-background)!important}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.holiday-theme:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;pointer-events:none;z-index:9999;opacity:.1;background-image:radial-gradient(circle at 20% 50%,rgba(255,255,255,.3) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.3) 0%,transparent 50%);animation:float 6s ease-in-out infinite}