feat: bg 6s crossfade rotate, sakura fall, LXGW WenKai font

2026-07-09 19:05:02 +08:00
parent 61bff7beac
commit 7d3f8b078b
5 changed files with 108 additions and 1 deletions
@@ -0,0 +1,44 @@
+/* 樱花飘落效果：动态生成花瓣，CSS 动画飘落+左右摇摆+旋转 */
+(function () {
+  if (document.getElementById('sakura-container')) return
+
+  // 容器：铺满全屏、不拦截鼠标事件
+  var container = document.createElement('div')
+  container.id = 'sakura-container'
+  container.style.cssText =
+    'position:fixed;top:0;left:0;width:100%;height:100%;' +
+    'pointer-events:none;z-index:9999;overflow:hidden;'
+  document.body.appendChild(container)
+
+  // 样式与飘落关键帧（S 形摆动 + 旋转）
+  var style = document.createElement('style')
+  style.textContent =
+    '.sakura-petal{' +
+    '  position:absolute;top:-12%;' +
+    '  background:#ffb7c5;border-radius:100% 0 100% 0;' +
+    '  opacity:.85;will-change:transform;' +
+    '  animation:sakura-fall linear infinite;' +
+    '}' +
+    '@keyframes sakura-fall{' +
+    '  0%{transform:translate(0,-12vh) rotate(0deg);}' +
+    '  25%{transform:translate(18px,25vh) rotate(90deg);}' +
+    '  50%{transform:translate(-18px,50vh) rotate(180deg);}' +
+    '  75%{transform:translate(18px,75vh) rotate(270deg);}' +
+    '  100%{transform:translate(0,112vh) rotate(360deg);}' +
+    '}'
+  document.head.appendChild(style)
+
+  var PETALS = 28
+  for (var i = 0; i < PETALS; i++) {
+    var p = document.createElement('div')
+    p.className = 'sakura-petal'
+    var size = 8 + Math.random() * 10 // 8~18px
+    p.style.width = size + 'px'
+    p.style.height = size + 'px'
+    p.style.left = Math.random() * 100 + 'vw'
+    p.style.background = Math.random() > 0.5 ? '#ffb7c5' : '#ffc8d6'
+    p.style.animationDuration = (6 + Math.random() * 6).toFixed(2) + 's' // 6~12s
+    p.style.animationDelay = (-Math.random() * 12).toFixed(2) + 's' // 错落起步
+    container.appendChild(p)
+  }
+})()