feat: 支持游客免登录浏览核心页面

未登录用户可先浏览衣橱、穿搭、运势、分享等内容，登录改为用户主动选择，并在登录页增加协议勾选确认与暂不登录入口。

miniprogram/pages/login/login.wxss

@@ -81,15 +81,48 @@
   mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M9.5 3C5.36 3 2 5.69 2 9c0 1.87 1.03 3.54 2.62 4.65L4 16.5l3.27-1.72c.73.2 1.47.3 2.23.3h.5A6.2 6.2 0 0 1 9 12c0-3.3 3.36-6 7.5-6h.5A5.7 5.7 0 0 0 9.5 3z'/%3E%3Cpath d='M22 12c0-2.76-2.69-5-6-5s-6 2.24-6 5 2.69 5 6 5c.72 0 1.42-.1 2.06-.28L20.5 18l-.42-2.6c1.17-.88 1.92-2.06 1.92-3.4z'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
 }
 
-.lg-terms {
-  margin-top: 28rpx;
-  text-align: center;
+/* 协议同意行：默认未勾选（空心细描边），勾选后为墨色实底 + 白色对勾 */
+.lg-consent {
+  display: flex;
+  align-items: flex-start;
+  gap: 16rpx;
+  margin-top: 30rpx;
+  padding: 0 4rpx;
+}
+
+.lg-check {
+  width: 34rpx;
+  height: 34rpx;
+  margin-top: 5rpx;
+  flex-shrink: 0;
+  border-radius: 8rpx;
+  box-shadow: inset 0 0 0 1rpx var(--ink-4);
+  color: transparent;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: background .18s var(--ease), box-shadow .18s var(--ease), color .18s var(--ease);
+}
+
+.lg-check .icon {
+  width: 24rpx;
+  height: 24rpx;
+}
+
+.lg-check.is-on {
+  background: var(--ink);
+  box-shadow: none;
+  color: #fff;
+}
+
+.lg-consent-t {
+  flex: 1;
   font-size: 22rpx;
   line-height: 1.75;
   color: var(--ink-3);
 }
 
-.lg-terms .link {
+.lg-consent-t .link {
   color: var(--ink-2);
   text-decoration: underline;
   text-underline-offset: 6rpx;
@@ -97,6 +130,23 @@
   text-decoration-color: var(--ink-4);
 }
 
+/* 暂不登录：细描边文字按钮，与主按钮形成主次 */
+.lg-browse {
+  margin-top: 28rpx;
+  height: 84rpx;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 26rpx;
+  color: var(--ink-2);
+  letter-spacing: .02em;
+  transition: opacity .18s var(--ease);
+}
+
+.lg-browse:active {
+  opacity: .5;
+}
+
 /* 新手礼包 */
 .lg-gift-ic {
   width: 88rpx;