From 7342a4e19848cf5d349838898a3d8e4e96c2a82f Mon Sep 17 00:00:00 2001
From: JOJO <1498581755@qq.com>
Date: Wed, 29 Jul 2026 12:36:15 +0800
Subject: [PATCH] =?UTF-8?q?style(chat):=20=E6=8A=98=E5=8F=A0=E5=9D=97?=
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--surface-card 在深色主题下比聊天区底色更黑，实色背景会放大
半透明 hairline 边框的亮度差；shell 与 stacked-more 统一改透明。
---
 static/src/styles/components/chat/_chat-area.scss | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/static/src/styles/components/chat/_chat-area.scss b/static/src/styles/components/chat/_chat-area.scss
index f87685c9..0fa284c3 100644
--- a/static/src/styles/components/chat/_chat-area.scss
+++ b/static/src/styles/components/chat/_chat-area.scss
@@ -1440,7 +1440,9 @@ body[data-theme='dark'] .collapsible-header:hover {
   position: relative;
   border: 1px solid var(--border-default);
   border-radius: 16px;
-  background: var(--surface-card);
+  /* 背景保持透明（沿用 token 清理前的实际视觉）：深色下 --surface-card 比聊天区底色更黑，
+     实色底会让半透明 hairline 边框的亮度差被放大，看起来像边框变浅 */
+  background: transparent;
   box-shadow: none;
   overflow: hidden;
   min-height: 0;
@@ -1481,7 +1483,8 @@ body[data-theme='dark'] .collapsible-header:hover {
 .stacked-more-block {
   position: absolute;
   inset: 0 0 auto 0;
-  background: var(--surface-card);
+  /* 与 shell 一致保持透明，避免深色下顶部出现一条更黑的色带 */
+  background: transparent;
   border-bottom: 0 solid var(--border-default);
   display: flex;
   align-items: center;