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修窄屏装饰层压不住作用域块（手机上一直显示桌面版樱花）

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@media 不提升特异性：作用域块 html[data-theme-style][data-page-scope="box"] 是 (0,2,1)，
媒体查询里写的 html[data-theme-style] 只有 (0,1,1)，于是「窄屏装饰层全置 none」这行
从来没生效 —— 手机上照样铺开桌面的花枝与花朵。深色作用域块是 (0,3,1)，更压不住。

- 媒体查询里补三条同特异性的通配规则（作用域 0,2,1 / 深色基础 0,2,1 / 深色+作用域 0,3,1），
  媒体块在文件更后，同特异性即胜出。
- 新增 TestNarrowMediaOverridesScopedDeco：外层每处非 none 的 --tb-deco，都要求窄屏里有
  同属性名、属性数不少于它的声明。变异验证过（删掉深层那条立即 FAIL）。
  它同时报出 shiroko 的 900px 块只覆盖浅色 —— 但深色块本就是 none，不算缺陷，故跳过。
- 窄屏改由加强版底纹承担樱花（透明度 ×1.9、格子 180px）：桌面那套 0.18~0.34 的透明度
  在 390px 上实测接近纯粉。顶栏与卡片之间那条 35px 带子试过放小花，question/admin 页卡片
  从 y=110 起会切掉一半，最终不放装饰层。
This commit is contained in:
tamakyi
2026-10-22 11:18:29 +08:00
parent 5c0de805c6
commit c9f22cb81b
5 changed files with 259 additions and 19 deletions
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static/css/themes/new-sakura.css
+19 -2
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@@ -156,8 +156,25 @@ html[data-theme="dark"][data-theme-style="new-sakura"][data-page-scope="vote"] {
--tb-deco: none, none, none, none, none, none, none, none, none, none;
--tb-deco-size: auto, auto, auto, auto, auto, auto, auto, auto, auto, auto;
--tb-deco-position: left top, left top, left top, left top, left top, left top, left top, left top, left top, left top;
/* 手机上唯一的留白是顶栏上下两条，装饰层没有立足之地 —— 缩小底纹让樱花密起来 */
--tb-page-pattern-size: 200px 200px;
/* 手机上装饰层整个收掉（卡片占满宽度），樱花只能由底纹承担：
换成加强版 + 缩小格子，否则 390px 上看就是一片纯粉 */
--tb-page-pattern: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20300%20300%22%3E%3Cg%20transform%3D%22translate%2896%2084%29%20scale%280.34%29%20translate%28-50%20-50%29%22%20opacity%3D%220.65%22%3E%3Cg%20fill%3D%22%23f2bfd0%22%3E%3Cellipse%20cx%3D%2250%22%20cy%3D%2227%22%20rx%3D%2214%22%20ry%3D%2221%22%20transform%3D%22rotate%280%2050%2050%29%22%2F%3E%3Cellipse%20cx%3D%2250%22%20cy%3D%2227%22%20rx%3D%2214%22%20ry%3D%2221%22%20transform%3D%22rotate%2872%2050%2050%29%22%2F%3E%3Cellipse%20cx%3D%2250%22%20cy%3D%2227%22%20rx%3D%2214%22%20ry%3D%2221%22%20transform%3D%22rotate%28144%2050%2050%29%22%2F%3E%3Cellipse%20cx%3D%2250%22%20cy%3D%2227%22%20rx%3D%2214%22%20ry%3D%2221%22%20transform%3D%22rotate%28216%2050%2050%29%22%2F%3E%3Cellipse%20cx%3D%2250%22%20cy%3D%2227%22%20rx%3D%2214%22%20ry%3D%2221%22%20transform%3D%22rotate%28288%2050%2050%29%22%2F%3E%3C%2Fg%3E%3C%2Fg%3E%3Cg%20transform%3D%22translate%28236%20208%29%20rotate%2828%29%20scale%280.26%29%22%20opacity%3D%220.46%22%3E%3Cpath%20d%3D%22M20%201c9%200%2015%208%2015%2018%200%205-2%209-4%2012l-4-5-7%209-7-9-4%205c-2-3-4-7-4-12C5%209%2011%201%2020%201z%22%20fill%3D%22%23f2bfd0%22%2F%3E%3C%2Fg%3E%3Cg%20transform%3D%22translate%28188%2052%29%20rotate%28-34%29%20scale%280.2%29%22%20opacity%3D%220.34%22%3E%3Cpath%20d%3D%22M20%201c9%200%2015%208%2015%2018%200%205-2%209-4%2012l-4-5-7%209-7-9-4%205c-2-3-4-7-4-12C5%209%2011%201%2020%201z%22%20fill%3D%22%23f2bfd0%22%2F%3E%3C%2Fg%3E%3C%2Fsvg%3E");
--tb-page-pattern-size: 180px 180px;
}
html[data-theme-style="new-sakura"][data-page-scope] {
--tb-deco: none, none, none, none, none, none, none, none, none, none;
--tb-deco-size: auto, auto, auto, auto, auto, auto, auto, auto, auto, auto;
--tb-deco-position: left top, left top, left top, left top, left top, left top, left top, left top, left top, left top;
}
html[data-theme="dark"][data-theme-style="new-sakura"] {
--tb-deco: none, none, none, none, none, none, none, none, none, none;
--tb-deco-size: auto, auto, auto, auto, auto, auto, auto, auto, auto, auto;
--tb-deco-position: left top, left top, left top, left top, left top, left top, left top, left top, left top, left top;
}
html[data-theme="dark"][data-theme-style="new-sakura"][data-page-scope] {
--tb-deco: none, none, none, none, none, none, none, none, none, none;
--tb-deco-size: auto, auto, auto, auto, auto, auto, auto, auto, auto, auto;
--tb-deco-position: left top, left top, left top, left top, left top, left top, left top, left top, left top, left top;
}
}