家谱现有接口调试50%

public/css/login.css

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+/* 登录页只保留单页差异，公共认证卡片样式在 public.css */
+.page-login .auth-card {
+  width: min(440px, 100%);
+}
+
+.login-mode-tabs {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 8px;
+  margin: 18px 0 16px;
+  padding: 4px;
+  border: 1px solid rgba(138, 64, 42, .14);
+  border-radius: 8px;
+  background: rgba(255, 255, 255, .72);
+}
+
+/* 登录方式按钮只负责状态呈现，切换逻辑在 auth-pages.js */
+.login-mode-tab {
+  min-height: 38px;
+  border: 0;
+  border-radius: 6px;
+  background: transparent;
+  color: var(--muted);
+  font: inherit;
+  cursor: pointer;
+}
+
+.login-mode-tab.is-active {
+  background: var(--brand);
+  color: #fff;
+  box-shadow: 0 8px 20px rgba(138, 64, 42, .18);
+}
+
+.login-mode-panel[hidden] {
+  display: none;
+}
+
+.page-login .code-row {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) 124px;
+  gap: 10px;
+}
+
+@media (max-width: 720px) {
+  .page-login .auth-layout {
+    align-items: start;
+  }
+}
+
+@media (max-width: 620px) {
+  .page-login .code-row {
+    grid-template-columns: 1fr;
+  }
+}