fix: 深色模式下页面底色不正确
根因: 渐变背景放在 page 元素,渐变变量定义在 page 选择器, 用户手动选深色时 themeStyle 只更新容器 <view> 上的变量, page 上的渐变变量不变(CSS 变量只能向下继承)。 修复: 渐变移到 .container::before (position: fixed 覆盖视口), themeStyle 加 --bg-gradient-start/--bg-gradient-end 变量。
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@@ -12,13 +12,14 @@ page {
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'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
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font-size: 28rpx;
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color: var(--text);
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background: linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%) !important;
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background-color: var(--bg);
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transition: background-color 0.3s ease, color 0.3s ease;
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}
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/* dark mode overrides */
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/* dark mode overrides (only for system dark mode; user choice goes through themeStyle) */
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@media (prefers-color-scheme: dark) {
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page {
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--bg: #0F0F12;
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--bg-gradient-start: #0F0F12;
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--bg-gradient-end: #14141A;
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}
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@@ -29,6 +30,21 @@ page {
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padding-bottom: calc(134rpx + env(safe-area-inset-bottom));
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min-height: 100vh;
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box-sizing: border-box;
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position: relative;
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}
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/* Viewport-spanning gradient background. Uses vars from inline themeStyle,
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* so it follows user-selected mode (not just system mode). */
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.container::before {
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content: '';
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position: fixed;
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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background: linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
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z-index: -1;
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pointer-events: none;
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}
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/* Defensive sizing for all SVG icons rendered as <image>.
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