diff --git a/frontend/app/admin/appearance/AppearanceAdmin.tsx b/frontend/app/admin/appearance/AppearanceAdmin.tsx
index 8c39c01..94e62c2 100644
--- a/frontend/app/admin/appearance/AppearanceAdmin.tsx
+++ b/frontend/app/admin/appearance/AppearanceAdmin.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import { useEffect, useMemo, useRef, useState, type KeyboardEvent } from "react";
+import { useEffect, useMemo, useRef, useState } from "react";
 import { useRouter } from "next/navigation";
 import {
   Palette,
@@ -24,7 +24,6 @@ import {
   AdminSettingsGroup,
   AdminSettingsPage,
   AdminSettingsRow,
-  AdminSettingsWork,
   AdminStepper,
   AdminSwitch,
 } from "@/components/admin";
@@ -57,21 +56,6 @@ import {
   type SiteBgConfig,
 } from "@/lib/bg";
 
-type SectionId = "theme" | "background" | "code" | "motion";
-
-const NAV: { id: SectionId; label: string }[] = [
-  { id: "theme", label: "主题色" },
-  { id: "background", label: "背景图" },
-  { id: "code", label: "代码块" },
-  { id: "motion", label: "界面动画" },
-];
-
-function parseSection(hash: string): SectionId {
-  const id = hash.replace(/^#/, "");
-  if (id === "background" || id === "code" || id === "motion" || id === "theme") return id;
-  return "theme";
-}
-
 function InstantNote({ saving }: { saving?: boolean }) {
   return <span className="admin-settings-instant">{saving ? "正在保存…" : "修改后立即生效"}</span>;
 }
@@ -85,7 +69,7 @@ function bgEqual(a: SiteBgConfig, b: SiteBgConfig): boolean {
   );
 }
 
-// 后台「外观设置」：半屏导航；主题色/背景图草稿本地预览，保存后才写库并广播。
+// 后台「外观设置」：单页分区；主题色/背景图草稿本地预览，保存后才写库并广播。
 export default function AppearanceAdmin({ initial }: { initial: PublicSettings }) {
   const router = useRouter();
   const initialAccent = initial.accent || "";
@@ -128,10 +112,6 @@ export default function AppearanceAdmin({ initial }: { initial: PublicSettings }
   const savedBgRef = useRef(savedBg);
   savedBgRef.current = savedBg;
 
-  const [active, setActive] = useState<SectionId>("theme");
-  const [pendingSection, setPendingSection] = useState<SectionId | null>(null);
-  const navRefs = useRef<(HTMLAnchorElement | null)[]>([]);
-
   const normalized = useMemo(() => normalizeHex(draft), [draft]);
   const pair = useMemo(
     () => (normalized ? deriveAccentPair(normalized) : null),
@@ -147,8 +127,6 @@ export default function AppearanceAdmin({ initial }: { initial: PublicSettings }
     adminFile != null ||
     siteMediaId != null ||
     adminMediaId != null;
-  const tabDirty =
-    (active === "theme" && themeDirty) || (active === "background" && bgDirty);
   const leave = useUnsavedGuard(themeDirty || bgDirty);
 
   useEffect(() => {
@@ -172,53 +150,6 @@ export default function AppearanceAdmin({ initial }: { initial: PublicSettings }
     };
   }, []);
 
-  useEffect(() => {
-    const apply = () => setActive(parseSection(window.location.hash));
-    apply();
-    if (!window.location.hash) {
-      history.replaceState(null, "", `${window.location.pathname}${window.location.search}#theme`);
-    }
-    window.addEventListener("hashchange", apply);
-    return () => window.removeEventListener("hashchange", apply);
-  }, []);
-
-  const goSection = (id: SectionId) => {
-    if (id === active) return;
-    setActive(id);
-    history.replaceState(null, "", `${window.location.pathname}${window.location.search}#${id}`);
-    document.getElementById("main")?.scrollTo({ top: 0 });
-  };
-
-  const selectTab = (id: SectionId) => {
-    if (id === active) return;
-    if (tabDirty) {
-      setPendingSection(id);
-      return;
-    }
-    goSection(id);
-  };
-
-  const onNavKeyDown = (e: KeyboardEvent<HTMLAnchorElement>, i: number) => {
-    if (
-      e.key !== "ArrowDown" &&
-      e.key !== "ArrowUp" &&
-      e.key !== "Home" &&
-      e.key !== "End" &&
-      e.key !== "ArrowRight" &&
-      e.key !== "ArrowLeft"
-    ) {
-      return;
-    }
-    e.preventDefault();
-    let next = i;
-    if (e.key === "ArrowDown" || e.key === "ArrowRight") next = (i + 1) % NAV.length;
-    else if (e.key === "ArrowUp" || e.key === "ArrowLeft") next = (i + NAV.length - 1) % NAV.length;
-    else if (e.key === "Home") next = 0;
-    else next = NAV.length - 1;
-    selectTab(NAV[next].id);
-    navRefs.current[next]?.focus();
-  };
-
   const handleSaveTheme = async () => {
     if (!normalized || savingTheme || themeInvalid) return;
     setSavingTheme(true);
@@ -470,8 +401,6 @@ export default function AppearanceAdmin({ initial }: { initial: PublicSettings }
     }
   };
 
-  };
-
   const renderBgRail = (
     surface: BgSurface,
     title: string,
@@ -496,7 +425,7 @@ export default function AppearanceAdmin({ initial }: { initial: PublicSettings }
           <p className="meta text-[12.5px] mt-0.5 leading-relaxed">{desc}</p>
         </div>
         <div
-          className="relative w-full max-w-[480px] rounded-[var(--r-sm)] border overflow-hidden"
+          className="relative w-full rounded-[var(--r-sm)] border overflow-hidden"
           style={{
             aspectRatio: BG_PREVIEW_ASPECT,
             borderColor: "var(--line)",
@@ -579,42 +508,6 @@ export default function AppearanceAdmin({ initial }: { initial: PublicSettings }
     );
   };
 
-  const leaveOpen = leave.leaveOpen || pendingSection != null;
-  const confirmLeave = () => {
-    if (pendingSection) {
-      const next = pendingSection;
-      setPendingSection(null);
-      if (themeDirty) discardTheme();
-      if (bgDirty) discardBg();
-      goSection(next);
-      return;
-    }
-    leave.confirmLeave();
-  };
-
-  const nav = (
-    <nav className="admin-settings-nav" aria-label="外观设置分类">
-      {NAV.map((item, i) => (
-        <a
-          key={item.id}
-          ref={(el) => {
-            navRefs.current[i] = el;
-          }}
-          href={`#${item.id}`}
-          className="admin-settings-nav-link"
-          aria-current={active === item.id ? "page" : undefined}
-          onClick={(e) => {
-            e.preventDefault();
-            selectTab(item.id);
-          }}
-          onKeyDown={(e) => onNavKeyDown(e, i)}
-        >
-          {item.label}
-        </a>
-      ))}
-    </nav>
-  );
-
   return (
     <AdminSettingsPage>
       <AdminPageHeader
@@ -623,402 +516,376 @@ export default function AppearanceAdmin({ initial }: { initial: PublicSettings }
         description="主题色与背景图需保存后全站生效；代码折叠与动画开关改完立即写入"
       />
 
-      <AdminSettingsWork nav={nav}>
-        <div id={`appearance-panel-${active}`} className="admin-settings-stack">
-          {active === "theme" && (
-            <>
-              <AdminSettingsGroup
-                title="预设主题色"
-                description="浅/暗两套色板均已调校，保证文字对比度达标。修改后本页实时预览，保存后全站生效。"
+      <div className="admin-settings-stack">
+        <AdminSettingsGroup
+          title="主题色"
+          description="本页实时预览，点保存后才推送给全站访客。"
+          footer={
+            <AdminSettingsActions
+              dirty={themeDirty}
+              saving={savingTheme}
+              saveLabel="保存主题色"
+              onSave={() => void handleSaveTheme()}
+              onDiscard={discardTheme}
+              saveDisabled={!normalized || savingTheme || !themeDirty || themeInvalid}
+              error={themeError}
+            >
+              <button
+                type="button"
+                className="btn btn-line btn-sm"
+                disabled={savingTheme}
+                onClick={() => {
+                  setThemeError("");
+                  setDraft(DEFAULT_ACCENT);
+                }}
               >
-                <div className="grid grid-cols-3 sm:grid-cols-6 gap-3 px-1 pb-1">
-                  {ACCENT_PRESETS.map((p) => {
-                    const selected = normalized === p.light;
-                    const isDefault = p.light === DEFAULT_ACCENT;
-                    return (
-                      <button
-                        key={p.key}
-                        type="button"
-                        onClick={() => {
-                          setThemeError("");
-                          setDraft(p.light);
-                        }}
-                        className="group flex flex-col items-center gap-2 py-3 rounded-[var(--r-sm)] border transition-colors"
-                        style={{
-                          borderColor: selected ? "var(--accent)" : "var(--line)",
-                          background: selected ? "var(--accent-soft)" : "var(--panel)",
-                          cursor: "pointer",
-                        }}
-                        aria-pressed={selected}
-                        data-tip={isDefault ? `${p.name}（默认）` : p.name}
-                      >
-                        <span className="relative flex items-center justify-center">
-                          <span className="w-9 h-9 rounded-full overflow-hidden grid grid-rows-2 border-2 border-[var(--panel)] shadow-sm">
-                            <span style={{ background: p.light }} />
-                            <span style={{ background: p.dark }} />
-                          </span>
-                          {selected && (
-                            <span
-                              className="absolute -bottom-1 -right-1 min-w-[18px] min-h-[18px] w-[18px] h-[18px] rounded-full flex items-center justify-center"
-                              style={{ background: "var(--accent)", color: "var(--accent-on)" }}
-                            >
-                              <Check size={11} strokeWidth={3} />
-                            </span>
-                          )}
-                        </span>
+                <RotateCcw size={14} /> 恢复默认
+              </button>
+            </AdminSettingsActions>
+          }
+        >
+          <AdminSettingsRow
+            label="预设"
+            hintBelow="浅/暗两套色板均已调校，保证文字对比度达标。"
+            wide
+          >
+            <div className="grid grid-cols-3 sm:grid-cols-6 gap-3">
+              {ACCENT_PRESETS.map((p) => {
+                const selected = normalized === p.light;
+                const isDefault = p.light === DEFAULT_ACCENT;
+                return (
+                  <button
+                    key={p.key}
+                    type="button"
+                    onClick={() => {
+                      setThemeError("");
+                      setDraft(p.light);
+                    }}
+                    className="group flex flex-col items-center gap-2 py-3 rounded-[var(--r-sm)] border transition-colors"
+                    style={{
+                      borderColor: selected ? "var(--accent)" : "var(--line)",
+                      background: selected ? "var(--accent-soft)" : "var(--panel)",
+                      cursor: "pointer",
+                    }}
+                    aria-pressed={selected}
+                    data-tip={isDefault ? `${p.name}（默认）` : p.name}
+                  >
+                    <span className="relative flex items-center justify-center">
+                      <span className="w-9 h-9 rounded-full overflow-hidden grid grid-rows-2 border-2 border-[var(--panel)] shadow-sm">
+                        <span style={{ background: p.light }} />
+                        <span style={{ background: p.dark }} />
+                      </span>
+                      {selected && (
                         <span
-                          className="text-[12px] leading-none"
-                          style={{ color: selected ? "var(--accent)" : "var(--ink-2)" }}
+                          className="absolute -bottom-1 -right-1 min-w-[18px] min-h-[18px] w-[18px] h-[18px] rounded-full flex items-center justify-center"
+                          style={{ background: "var(--accent)", color: "var(--accent-on)" }}
                         >
-                          {p.name}
+                          <Check size={11} strokeWidth={3} />
                         </span>
-                      </button>
-                    );
-                  })}
-                </div>
-              </AdminSettingsGroup>
-
-              <AdminSettingsGroup
-                title="自定义颜色"
-                description="取色器选色或输入 HEX；浅色下对比度过低时会自动校正。"
-                footer={
-                  <AdminSettingsActions
-                    dirty={themeDirty}
-                    saving={savingTheme}
-                    saveLabel="保存并全站生效"
-                    onSave={() => void handleSaveTheme()}
-                    onDiscard={discardTheme}
-                    saveDisabled={!normalized || savingTheme || !themeDirty || themeInvalid}
-                    error={themeError}
-                  >
-                    <button
-                      type="button"
-                      className="btn btn-line btn-sm"
-                      disabled={savingTheme}
-                      onClick={() => {
-                        setThemeError("");
-                        setDraft(DEFAULT_ACCENT);
-                      }}
-                    >
-                      <RotateCcw size={14} /> 恢复默认
-                    </button>
-                  </AdminSettingsActions>
-                }
-              >
-                <AdminSettingsRow
-                  label={
-                    <span className="inline-flex items-center gap-1.5">
-                      <Pipette size={15} /> 主题色
-                    </span>
-                  }
-                  hintBelow="保存前仅本页预览，不会推送给其他访客。"
-                  error={themeInvalid ? "颜色格式无效，请输入 6 位 HEX 值（如 3B5BDB）" : undefined}
-                >
-                  <div className="flex flex-wrap items-center gap-3">
-                    <label
-                      className="relative w-11 h-11 rounded-[var(--r-sm)] overflow-hidden border cursor-pointer shrink-0"
-                      style={{ borderColor: "var(--line-2)" }}
-                      data-tip="打开取色器"
-                    >
-                      <input
-                        type="color"
-                        className="absolute inset-0 w-[200%] h-[200%] -translate-x-1/4 -translate-y-1/4 cursor-pointer border-0 p-0 bg-transparent"
-                        value={normalized || DEFAULT_ACCENT}
-                        onChange={(e) => {
-                          setThemeError("");
-                          setDraft(e.target.value);
-                        }}
-                        aria-label="自定义主题色取色器"
-                      />
-                    </label>
-                    <div
-                      className={`admin-field-shell px-3 h-11 font-mono text-[14px] w-40${themeInvalid ? " is-invalid" : ""}`}
-                    >
-                      <span style={{ color: "var(--ink-3)" }}>#</span>
-                      <input
-                        value={draft.startsWith("#") ? draft.slice(1) : draft}
-                        onChange={(e) => {
-                          setThemeError("");
-                          setDraft("#" + e.target.value.replace(/[^0-9a-fA-F#]/g, ""));
-                        }}
-                        className="admin-field-input flex-1 min-w-0 px-0 py-0 ml-1 uppercase"
-                        maxLength={7}
-                        spellCheck={false}
-                        aria-label="主题色 HEX 值"
-                      />
-                    </div>
-                    {pair && (
-                      <div className="flex items-center gap-2 text-[12px]" style={{ color: "var(--ink-3)" }}>
-                        <span className="inline-flex items-center gap-1.5">
-                          <span
-                            className="w-3.5 h-3.5 rounded-full border"
-                            style={{ background: pair.light, borderColor: "var(--line)" }}
-                          />
-                          浅色 {pair.light}
-                        </span>
-                        <span className="inline-flex items-center gap-1.5">
-                          <span
-                            className="w-3.5 h-3.5 rounded-full border"
-                            style={{ background: pair.dark, borderColor: "var(--line)" }}
-                          />
-                          暗色 {pair.dark}
-                        </span>
-                      </div>
-                    )}
-                  </div>
-                  {pair?.adjusted && (
-                    <p className="mt-2.5 text-[12.5px]" style={{ color: "var(--gold)" }}>
-                      该颜色与白底对比度不足，浅色模式已自动校正为 {pair.light}（暗色模式同步派生{" "}
-                      {pair.dark}）
-                    </p>
-                  )}
-                  {preset && preset.light === DEFAULT_ACCENT && (
-                    <p className="mt-2.5 text-[12.5px] meta">当前为内置默认色，保存时会清除自定义配置</p>
-                  )}
-                </AdminSettingsRow>
-
-                <AdminSettingsRow label="实时预览" wide>
-                  <div
-                    className="rounded-[var(--r-sm)] border p-4 space-y-4"
-                    style={{ borderColor: "var(--line)", background: "var(--bg)" }}
-                  >
-                    <div className="flex flex-wrap items-center gap-2.5">
-                      <button type="button" className="btn btn-primary btn-sm">
-                        <Save size={14} /> 主按钮
-                      </button>
-                      <button type="button" className="btn btn-line btn-sm">
-                        次要按钮
-                      </button>
-                      <a
-                        className="text-[13px]"
-                        style={{ color: "var(--accent)" }}
-                        href="#preview"
-                        onClick={(e) => e.preventDefault()}
-                      >
-                        文字链接示例
-                      </a>
-                    </div>
-                    <div className="flex flex-wrap items-center gap-2">
-                      <span className="admin-seg">未选中</span>
-                      <span className="admin-seg" aria-selected="true">
-                        选中标签
-                      </span>
-                      <span
-                        className="inline-flex items-center rounded-full px-3.5 py-2 text-[13.5px]"
-                        style={{ background: "var(--nav-active-bg)", color: "var(--nav-active-ink)" }}
-                      >
-                        导航选中态
-                      </span>
-                    </div>
-                    <div className="max-w-xs">
-                      <section className="j13-module">
-                        <p className="j13-module-title mb-2.5">板块目录</p>
-                        <div className="j13-bcard" aria-current="page">
-                          <span
-                            className="j13-bcard-ico"
-                            style={{ background: "var(--accent-soft)", color: "var(--accent)" }}
-                          >
-                            <Palette size={16} />
-                          </span>
-                          <span className="j13-bcard-name flex-1">选中的板块</span>
-                        </div>
-                      </section>
-                    </div>
-                  </div>
-                </AdminSettingsRow>
-              </AdminSettingsGroup>
-            </>
-          )}
-
-          {active === "background" && (
-            <AdminSettingsGroup
-              title="站点背景图"
-              description="前台与后台可分别配置 JPEG / PNG / WebP（≤8MB）。预览按 16:9。未保存不会推送给其他访客。"
-              footer={
-                <AdminSettingsActions
-                  dirty={bgDirty}
-                  saving={savingBg}
-                  saveLabel="保存并全站生效"
-                  onSave={() => void handleSaveBg()}
-                  onDiscard={discardBg}
-                  error={bgError}
-                />
-              }
-            >
-              <AdminSettingsRow
-                label={
-                  <span className="inline-flex items-center gap-1.5">
-                    <ImageIcon size={15} /> 前台 / 后台
-                  </span>
-                }
-                hintBelow="选择图片与铺放方式仅在本页预览；点保存后才写入并广播。"
-                wide
-              >
-                <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
-                  {renderBgRail(
-                    "site",
-                    "前台",
-                    "访客看到的论坛页面，含首页、帖子与个人主页。",
-                    Monitor,
-                    siteFileRef
-                  )}
-                  {renderBgRail(
-                    "admin",
-                    "后台",
-                    "管理面板专用。与前台互不影响，可配更克制的图案。",
-                    LayoutDashboard,
-                    adminFileRef
-                  )}
-                </div>
-              </AdminSettingsRow>
-            </AdminSettingsGroup>
-          )}
-
-          {active === "code" && (
-            <AdminSettingsGroup
-              title="代码块自动折叠"
-              description="超过阈值行数的 Markdown 代码块默认折叠，读者可点「展开全部」。"
-            >
-              <AdminSettingsRow
-                label={
-                  <span className="inline-flex items-center gap-1.5">
-                    <Code2 size={15} /> 自动折叠
-                  </span>
-                }
-              >
-                <div className="flex items-center gap-2">
-                  <AdminSwitch
-                    checked={codeAutoFold}
-                    disabled={togglingFold}
-                    onChange={() => void toggleCodeFold()}
-                    label="代码块自动折叠"
-                  />
-                  <InstantNote saving={togglingFold} />
-                </div>
-              </AdminSettingsRow>
-              {codeAutoFold ? (
-                <AdminSettingsRow
-                  label="折叠行数阈值"
-                  htmlFor="fold-lines"
-                  hintBelow="超过该值时折叠；折叠后约露出同样行数。设为 0 表示无预览。范围 0–100，默认 5。"
-                >
-                  <div className="flex flex-wrap items-center gap-2.5">
-                    <AdminStepper
-                      id="fold-lines"
-                      value={foldLines}
-                      onChange={setFoldLines}
-                      min={0}
-                      max={100}
-                      unit="行"
-                      ariaLabel="折叠行数阈值"
-                      disabled={savingFoldLines}
-                    />
-                    <button
-                      type="button"
-                      className="btn btn-line btn-sm"
-                      disabled={savingFoldLines}
-                      onClick={() => void saveFoldLines()}
-                    >
-                      {savingFoldLines ? (
-                        <Loader2 size={14} className="animate-spin" />
-                      ) : (
-                        <Save size={14} />
                       )}
-                      保存
-                    </button>
-                  </div>
-                </AdminSettingsRow>
-              ) : null}
-            </AdminSettingsGroup>
-          )}
+                    </span>
+                    <span
+                      className="text-[12px] leading-none"
+                      style={{ color: selected ? "var(--accent)" : "var(--ink-2)" }}
+                    >
+                      {p.name}
+                    </span>
+                  </button>
+                );
+              })}
+            </div>
+          </AdminSettingsRow>
 
-          {active === "motion" && (
-            <AdminSettingsGroup
-              title="界面动画"
-              description="总开关关闭后全站即时切换。系统「减少动态效果」始终优先。"
-            >
-              <AdminSettingsRow
-                label={
-                  <span className="inline-flex items-center gap-1.5">
-                    <Sparkles size={15} /> 总开关
-                  </span>
-                }
+          <AdminSettingsRow
+            label={
+              <span className="inline-flex items-center gap-1.5">
+                <Pipette size={15} /> 自定义
+              </span>
+            }
+            hintBelow="取色器或 HEX；浅色对比不足时会自动校正。"
+            error={themeInvalid ? "颜色格式无效，请输入 6 位 HEX（如 3B5BDB）" : undefined}
+          >
+            <div className="flex flex-wrap items-center gap-3">
+              <label
+                className="relative w-11 h-11 rounded-[var(--r-sm)] overflow-hidden border cursor-pointer shrink-0"
+                style={{ borderColor: "var(--line-2)" }}
+                data-tip="打开取色器"
               >
+                <input
+                  type="color"
+                  className="absolute inset-0 w-[200%] h-[200%] -translate-x-1/4 -translate-y-1/4 cursor-pointer border-0 p-0 bg-transparent"
+                  value={normalized || DEFAULT_ACCENT}
+                  onChange={(e) => {
+                    setThemeError("");
+                    setDraft(e.target.value);
+                  }}
+                  aria-label="自定义主题色取色器"
+                />
+              </label>
+              <div
+                className={`admin-field-shell px-3 h-11 font-mono text-[14px] w-40${themeInvalid ? " is-invalid" : ""}`}
+              >
+                <span style={{ color: "var(--ink-3)" }}>#</span>
+                <input
+                  value={draft.startsWith("#") ? draft.slice(1) : draft}
+                  onChange={(e) => {
+                    setThemeError("");
+                    setDraft("#" + e.target.value.replace(/[^0-9a-fA-F#]/g, ""));
+                  }}
+                  className="admin-field-input flex-1 min-w-0 px-0 py-0 ml-1 uppercase"
+                  maxLength={7}
+                  spellCheck={false}
+                  aria-label="主题色 HEX 值"
+                />
+              </div>
+              {pair && (
+                <div className="flex items-center gap-2 text-[12px]" style={{ color: "var(--ink-3)" }}>
+                  <span className="inline-flex items-center gap-1.5">
+                    <span
+                      className="w-3.5 h-3.5 rounded-full border"
+                      style={{ background: pair.light, borderColor: "var(--line)" }}
+                    />
+                    浅色 {pair.light}
+                  </span>
+                  <span className="inline-flex items-center gap-1.5">
+                    <span
+                      className="w-3.5 h-3.5 rounded-full border"
+                      style={{ background: pair.dark, borderColor: "var(--line)" }}
+                    />
+                    暗色 {pair.dark}
+                  </span>
+                </div>
+              )}
+            </div>
+            {pair?.adjusted && (
+              <p className="mt-2.5 text-[12.5px]" style={{ color: "var(--gold)" }}>
+                该颜色与白底对比度不足，浅色已校正为 {pair.light}（暗色派生 {pair.dark}）
+              </p>
+            )}
+            {preset && preset.light === DEFAULT_ACCENT && (
+              <p className="mt-2.5 text-[12.5px] meta">当前为内置默认色，保存时会清除自定义配置</p>
+            )}
+          </AdminSettingsRow>
+
+          <AdminSettingsRow label="预览" wide>
+            <div
+              className="rounded-[var(--r-sm)] border p-4 space-y-4"
+              style={{ borderColor: "var(--line)", background: "var(--bg)" }}
+            >
+              <div className="flex flex-wrap items-center gap-2.5">
+                <button type="button" className="btn btn-primary btn-sm">
+                  <Save size={14} /> 主按钮
+                </button>
+                <button type="button" className="btn btn-line btn-sm">
+                  次要按钮
+                </button>
+                <a
+                  className="text-[13px]"
+                  style={{ color: "var(--accent)" }}
+                  href="#preview"
+                  onClick={(e) => e.preventDefault()}
+                >
+                  文字链接示例
+                </a>
+              </div>
+              <div className="flex flex-wrap items-center gap-2">
+                <span className="admin-seg">未选中</span>
+                <span className="admin-seg" aria-selected="true">
+                  选中标签
+                </span>
+                <span
+                  className="inline-flex items-center rounded-full px-3.5 py-2 text-[13.5px]"
+                  style={{ background: "var(--nav-active-bg)", color: "var(--nav-active-ink)" }}
+                >
+                  导航选中态
+                </span>
+              </div>
+              <div className="max-w-xs">
+                <section className="j13-module">
+                  <p className="j13-module-title mb-2.5">板块目录</p>
+                  <div className="j13-bcard" aria-current="page">
+                    <span
+                      className="j13-bcard-ico"
+                      style={{ background: "var(--accent-soft)", color: "var(--accent)" }}
+                    >
+                      <Palette size={16} />
+                    </span>
+                    <span className="j13-bcard-name flex-1">选中的板块</span>
+                  </div>
+                </section>
+              </div>
+            </div>
+          </AdminSettingsRow>
+        </AdminSettingsGroup>
+
+        <AdminSettingsGroup
+          title="站点背景图"
+          description="前台与后台可分别配置 JPEG / PNG / WebP（≤8MB）。本页预览，保存后才全站生效。"
+          footer={
+            <AdminSettingsActions
+              dirty={bgDirty}
+              saving={savingBg}
+              saveLabel="保存背景图"
+              onSave={() => void handleSaveBg()}
+              onDiscard={discardBg}
+              error={bgError}
+            />
+          }
+        >
+          <AdminSettingsRow
+            label={
+              <span className="inline-flex items-center gap-1.5">
+                <ImageIcon size={15} /> 前台 / 后台
+              </span>
+            }
+            hintBelow="可从本机上传或媒体库选用；铺放方式随草稿一起保存。"
+            wide
+          >
+            <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
+              {renderBgRail(
+                "site",
+                "前台",
+                "访客看到的论坛页面，含首页、帖子与个人主页。",
+                Monitor,
+                siteFileRef
+              )}
+              {renderBgRail(
+                "admin",
+                "后台",
+                "管理面板专用。与前台互不影响，可配更克制的图案。",
+                LayoutDashboard,
+                adminFileRef
+              )}
+            </div>
+          </AdminSettingsRow>
+        </AdminSettingsGroup>
+
+        <AdminSettingsGroup
+          title="代码块与动画"
+          description="开关改完立即写入。系统「减少动态效果」始终优先于站点动画。"
+        >
+          <AdminSettingsRow
+            label={
+              <span className="inline-flex items-center gap-1.5">
+                <Code2 size={15} /> 代码自动折叠
+              </span>
+            }
+            hintBelow="超过阈值行数的 Markdown 代码块默认折叠，读者可展开。"
+          >
+            <div className="flex items-center gap-2">
+              <AdminSwitch
+                checked={codeAutoFold}
+                disabled={togglingFold}
+                onChange={() => void toggleCodeFold()}
+                label="代码块自动折叠"
+              />
+              <InstantNote saving={togglingFold} />
+            </div>
+          </AdminSettingsRow>
+          {codeAutoFold ? (
+            <AdminSettingsRow
+              label="折叠行数阈值"
+              htmlFor="fold-lines"
+              hintBelow="超过该值时折叠；折叠后约露出同样行数。0 表示无预览。范围 0–100，默认 5。"
+            >
+              <div className="flex flex-wrap items-center gap-2.5">
+                <AdminStepper
+                  id="fold-lines"
+                  value={foldLines}
+                  onChange={setFoldLines}
+                  min={0}
+                  max={100}
+                  unit="行"
+                  ariaLabel="折叠行数阈值"
+                  disabled={savingFoldLines}
+                />
+                <button
+                  type="button"
+                  className="btn btn-line btn-sm"
+                  disabled={savingFoldLines}
+                  onClick={() => void saveFoldLines()}
+                >
+                  {savingFoldLines ? (
+                    <Loader2 size={14} className="animate-spin" />
+                  ) : (
+                    <Save size={14} />
+                  )}
+                  保存阈值
+                </button>
+              </div>
+            </AdminSettingsRow>
+          ) : null}
+
+          <AdminSettingsRow
+            label={
+              <span className="inline-flex items-center gap-1.5">
+                <Sparkles size={15} /> 界面动画
+              </span>
+            }
+            hintBelow="总开关关闭后全站即时减少动态效果。"
+          >
+            <div className="flex items-center gap-2">
+              <AdminSwitch
+                checked={uiAnimations}
+                disabled={togglingMotion}
+                onChange={() => void toggleMotionField("ui_animations", !uiAnimations)}
+                label="界面动画总开关"
+              />
+              <InstantNote saving={togglingMotion} />
+            </div>
+          </AdminSettingsRow>
+          {uiAnimations ? (
+            <>
+              <AdminSettingsRow label="代码折叠动画" hintBelow="代码块展开/收起的高度过渡与跟滚。">
                 <div className="flex items-center gap-2">
                   <AdminSwitch
-                    checked={uiAnimations}
+                    checked={animCodeFold}
                     disabled={togglingMotion}
-                    onChange={() => void toggleMotionField("ui_animations", !uiAnimations)}
-                    label="界面动画总开关"
+                    onChange={() => void toggleMotionField("anim_code_fold", !animCodeFold)}
+                    label="代码折叠动画"
                   />
                   <InstantNote saving={togglingMotion} />
                 </div>
               </AdminSettingsRow>
-              {uiAnimations ? (
-                <>
-                  <AdminSettingsRow
-                    label="代码折叠动画"
-                    hintBelow="代码块展开/收起的高度过渡与跟滚。"
-                  >
-                    <div className="flex items-center gap-2">
-                      <AdminSwitch
-                        checked={animCodeFold}
-                        disabled={togglingMotion}
-                        onChange={() => void toggleMotionField("anim_code_fold", !animCodeFold)}
-                        label="代码折叠动画"
-                      />
-                      <InstantNote saving={togglingMotion} />
-                    </div>
-                  </AdminSettingsRow>
-                  <AdminSettingsRow
+              <AdminSettingsRow label="平滑滚动" hintBelow="目录跳转、回顶、新内容提示等 scroll 行为。">
+                <div className="flex items-center gap-2">
+                  <AdminSwitch
+                    checked={animSmoothScroll}
+                    disabled={togglingMotion}
+                    onChange={() => void toggleMotionField("anim_smooth_scroll", !animSmoothScroll)}
                     label="平滑滚动"
-                    hintBelow="目录跳转、回顶、新内容提示等 scroll 行为。"
-                  >
-                    <div className="flex items-center gap-2">
-                      <AdminSwitch
-                        checked={animSmoothScroll}
-                        disabled={togglingMotion}
-                        onChange={() =>
-                          void toggleMotionField("anim_smooth_scroll", !animSmoothScroll)
-                        }
-                        label="平滑滚动"
-                      />
-                      <InstantNote saving={togglingMotion} />
-                    </div>
-                  </AdminSettingsRow>
-                  <AdminSettingsRow
+                  />
+                  <InstantNote saving={togglingMotion} />
+                </div>
+              </AdminSettingsRow>
+              <AdminSettingsRow
+                label="装饰入场"
+                hintBelow="列表入场、Toast、点赞弹出、在线脉冲等装饰性动画。"
+              >
+                <div className="flex items-center gap-2">
+                  <AdminSwitch
+                    checked={animChrome}
+                    disabled={togglingMotion}
+                    onChange={() => void toggleMotionField("anim_chrome", !animChrome)}
                     label="装饰入场"
-                    hintBelow="列表入场、Toast、点赞弹出、在线脉冲等装饰性动画。"
-                  >
-                    <div className="flex items-center gap-2">
-                      <AdminSwitch
-                        checked={animChrome}
-                        disabled={togglingMotion}
-                        onChange={() => void toggleMotionField("anim_chrome", !animChrome)}
-                        label="装饰入场"
-                      />
-                      <InstantNote saving={togglingMotion} />
-                    </div>
-                  </AdminSettingsRow>
-                </>
-              ) : null}
-            </AdminSettingsGroup>
-          )}
-        </div>
-      </AdminSettingsWork>
+                  />
+                  <InstantNote saving={togglingMotion} />
+                </div>
+              </AdminSettingsRow>
+            </>
+          ) : null}
+        </AdminSettingsGroup>
+      </div>
 
       <ConfirmDialog
-        open={leaveOpen}
+        open={leave.leaveOpen}
         title="有未保存的修改"
-        message="离开后当前分类的草稿将丢弃，确定继续？"
+        message="离开后主题色或背景图的草稿将丢弃，确定继续？"
         confirmLabel="丢弃并离开"
         cancelLabel="继续编辑"
         danger
-        onConfirm={confirmLeave}
-        onCancel={() => {
-          setPendingSection(null);
-          leave.cancelLeave();
-        }}
+        onConfirm={leave.confirmLeave}
+        onCancel={leave.cancelLeave}
       />
       <BgMediaPicker
         open={bgPicker != null}
diff --git a/frontend/app/admin/users/UsersAdmin.tsx b/frontend/app/admin/users/UsersAdmin.tsx
index 6822156..4af3f7b 100644
--- a/frontend/app/admin/users/UsersAdmin.tsx
+++ b/frontend/app/admin/users/UsersAdmin.tsx
@@ -41,7 +41,6 @@ import Modal from "@/components/Modal";
 import RoleAccountModal from "@/components/RoleAccountModal";
 import {
   AdminEmpty,
-  AdminIconButton,
   AdminPageHeader,
   AdminPager,
   AdminSearchField,
@@ -523,7 +522,8 @@ export default function UsersAdmin({
           frags.push("100px");
           break;
         case "actions":
-          frags.push("minmax(148px,1.8fr)");
+          // 带文案按钮：档案 / 主页 / 角色与账号
+          frags.push("minmax(268px,2.2fr)");
           break;
       }
     }
@@ -665,30 +665,35 @@ export default function UsersAdmin({
   const renderActions = (u: AdminUser, isSelf: boolean) => {
     const canAudit = isOwner(currentUserRole);
     const auditBtn = canAudit ? (
-      <AdminIconButton
+      <Link
         href={`/admin/users/${u.id}`}
-        tip="内容档案"
-        ariaLabel={`查看 ${u.username} 的内容档案`}
-        tone="accent"
+        className="btn btn-line btn-sm gap-1"
+        aria-label={`查看 ${u.username} 的内容档案`}
       >
-        <FolderSearch size={15} />
-      </AdminIconButton>
+        <FolderSearch size={13} />
+        内容档案
+      </Link>
     ) : null;
 
     if (u.role === ROLES.OWNER) {
       return (
-        <div className="flex items-center gap-1">
+        <div className="flex items-center gap-1.5 flex-wrap">
           {auditBtn}
-          <AdminIconButton href={`/u/${u.id}`} tip="查看个人主页" ariaLabel={`查看 ${u.nickname} 的个人主页`}>
-            <ExternalLink size={15} />
-          </AdminIconButton>
+          <Link href={`/u/${u.id}`} className="btn btn-line btn-sm gap-1" aria-label={`查看 ${u.nickname} 的个人主页`}>
+            <ExternalLink size={13} />
+            主页
+          </Link>
         </div>
       );
     }
     if (isSelf) {
       return (
-        <div className="flex items-center gap-1">
+        <div className="flex items-center gap-1.5 flex-wrap">
           {auditBtn}
+          <Link href={`/u/${u.id}`} className="btn btn-line btn-sm gap-1" aria-label={`查看 ${u.nickname} 的个人主页`}>
+            <ExternalLink size={13} />
+            主页
+          </Link>
           <span
             className="inline-flex items-center rounded-full px-2.5 py-1 text-[11px] whitespace-nowrap"
             style={{ background: "var(--panel-2)", color: "var(--ink-3)" }}
@@ -699,26 +704,28 @@ export default function UsersAdmin({
       );
     }
     const busy = actingId === u.id;
-    const roleTone = u.banned ? "danger" : u.role !== ROLES.USER ? "accent" : "default";
+    // 「角色与账号」用主题色突出主操作；封禁态改用危险色提示需处理
+    const roleStyle = u.banned
+      ? { color: "var(--danger)", borderColor: "var(--danger)" }
+      : { color: "var(--accent)", borderColor: "var(--accent)" };
     return (
-      <div className="flex items-center gap-1">
+      <div className="flex items-center gap-1.5 flex-wrap">
         {auditBtn}
-        <AdminIconButton
-          href={`/u/${u.id}`}
-          tip="查看个人主页"
-          ariaLabel={`查看 ${u.nickname} 的个人主页`}
-        >
-          <ExternalLink size={15} />
-        </AdminIconButton>
-        <AdminIconButton
-          tip="角色与账号"
-          ariaLabel={`设置 ${u.username} 的角色与账号状态`}
-          tone={roleTone}
+        <Link href={`/u/${u.id}`} className="btn btn-line btn-sm gap-1" aria-label={`查看 ${u.nickname} 的个人主页`}>
+          <ExternalLink size={13} />
+          主页
+        </Link>
+        <button
+          type="button"
           disabled={busy}
           onClick={() => setRoleTarget(u)}
+          className="btn btn-line btn-sm gap-1"
+          style={roleStyle}
+          aria-label={`设置 ${u.username} 的角色与账号状态`}
         >
-          <ShieldCheck size={15} />
-        </AdminIconButton>
+          <ShieldCheck size={13} />
+          角色与账号
+        </button>
       </div>
     );
   };
@@ -971,41 +978,7 @@ export default function UsersAdmin({
                         {u.last_login_at ? ` · ${formatRelative(u.last_login_at)}` : ""}
                       </button>
                     </p>
-                    <div className="flex items-center gap-2 mt-3 flex-wrap">
-                      {isOwner(currentUserRole) && (
-                        <Link href={`/admin/users/${u.id}`} className="btn btn-line btn-sm">
-                          <FolderSearch size={13} /> 内容档案
-                        </Link>
-                      )}
-                      {(isSelf || u.role === ROLES.OWNER) && (
-                        <Link href={`/u/${u.id}`} className="btn btn-line btn-sm">
-                          <ExternalLink size={13} /> 主页
-                        </Link>
-                      )}
-                      {!isSelf && u.role !== ROLES.OWNER && (
-                        <>
-                          <Link href={`/u/${u.id}`} className="btn btn-line btn-sm">
-                            <ExternalLink size={13} /> 主页
-                          </Link>
-                          <button
-                            type="button"
-                            disabled={actingId === u.id}
-                            onClick={() => setRoleTarget(u)}
-                            className="btn btn-line btn-sm"
-                            style={
-                              u.banned
-                                ? { color: "var(--danger)", borderColor: "var(--danger)" }
-                                : u.role !== ROLES.USER
-                                  ? { color: "var(--accent)", borderColor: "var(--accent)" }
-                                  : undefined
-                            }
-                          >
-                            <ShieldCheck size={13} />
-                            角色与账号
-                          </button>
-                        </>
-                      )}
-                    </div>
+                    <div className="mt-3">{renderActions(u, isSelf)}</div>
                   </div>
                 </div>
               );
diff --git a/frontend/app/globals.css b/frontend/app/globals.css
index fa084b9..2112121 100644
--- a/frontend/app/globals.css
+++ b/frontend/app/globals.css
@@ -474,8 +474,8 @@ html.j13-has-admin-bg[data-j13-chrome="admin"] body::after {
   display: flex;
   align-items: center;
   gap: 6px;
-  padding: 3px 4px 3px 3px;
-  border-radius: 12px;
+  padding: 2px 3px 2px 2px;
+  border-radius: 10px;
   border: 1px solid var(--line);
   background: var(--panel);
   color: var(--ink);
@@ -499,11 +499,11 @@ html.j13-has-admin-bg[data-j13-chrome="admin"] body::after {
   flex: 1;
   min-width: 0;
   display: flex;
-  align-items: flex-start;
-  gap: 10px;
-  padding: 6px 4px 6px 7px;
+  align-items: center;
+  gap: 8px;
+  padding: 5px 4px 5px 6px;
   border: 0;
-  border-radius: 9px;
+  border-radius: 8px;
   background: transparent;
   color: inherit;
   text-align: left;
@@ -519,9 +519,9 @@ html.j13-has-admin-bg[data-j13-chrome="admin"] body::after {
   outline-offset: 1px;
 }
 .j13-compose-typeopt-ico {
-  width: 32px;
-  height: 32px;
-  border-radius: 9px;
+  width: 28px;
+  height: 28px;
+  border-radius: 8px;
   display: inline-flex;
   align-items: center;
   justify-content: center;
@@ -540,24 +540,26 @@ html.j13-has-admin-bg[data-j13-chrome="admin"] body::after {
 .j13-compose-typeopt-copy {
   min-width: 0;
   flex: 1;
-  padding-top: 1px;
 }
 .j13-compose-typeopt-label {
   display: block;
-  font-size: 13.5px;
+  font-size: 13px;
   font-weight: 700;
-  line-height: 1.3;
+  line-height: 1.25;
   color: var(--ink);
   letter-spacing: -0.01em;
 }
 .j13-compose-typeopt-hint {
   display: block;
-  margin-top: 2px;
-  font-size: 12px;
+  margin-top: 1px;
+  font-size: 11.5px;
   font-weight: 500;
-  line-height: 1.4;
+  line-height: 1.3;
   color: var(--ink-3);
 }
+.j13-compose-typebar.is-compact {
+  gap: 4px;
+}
 .j13-compose-typeopt.is-on .j13-compose-typeopt-hint.is-status {
   color: color-mix(in srgb, var(--accent) 58%, var(--ink-2));
   font-variant-numeric: tabular-nums;
@@ -1742,14 +1744,22 @@ html.j13-has-admin-bg[data-j13-chrome="admin"] body::after {
   opacity: 0.65;
   cursor: not-allowed;
 }
-.j13-board-trigger.is-empty {
-  border-color: color-mix(in srgb, var(--accent) 48%, var(--line));
-  background: var(--accent-soft);
+/* 未选：沿用中性边框；仅校验失败后用固定警示红 */
+.j13-board-trigger.is-invalid {
+  border-color: #dc2626;
+  background: color-mix(in srgb, #dc2626 8%, var(--panel));
 }
-.j13-board-trigger.is-empty .j13-board-trigger-hint {
-  color: var(--accent);
+.j13-board-trigger.is-invalid .j13-board-trigger-hint {
+  color: #dc2626;
   font-weight: 650;
 }
+html.dark .j13-board-trigger.is-invalid {
+  border-color: #f87171;
+  background: color-mix(in srgb, #f87171 12%, var(--panel));
+}
+html.dark .j13-board-trigger.is-invalid .j13-board-trigger-hint {
+  color: #f87171;
+}
 .j13-board-trigger-copy {
   min-width: 0;
   flex: 1;
diff --git a/frontend/components/BoardPicker.tsx b/frontend/components/BoardPicker.tsx
index 4d2ee72..e476599 100644
--- a/frontend/components/BoardPicker.tsx
+++ b/frontend/components/BoardPicker.tsx
@@ -10,6 +10,8 @@ type BoardPickerProps = {
   onChange: (id: number) => void;
   disabled?: boolean;
   loading?: boolean;
+  /** 提交校验失败后再为 true，用于红色错误态 */
+  invalid?: boolean;
   id?: string;
 };
 
@@ -23,6 +25,7 @@ export default function BoardPicker({
   onChange,
   disabled,
   loading,
+  invalid = false,
   id,
 }: BoardPickerProps) {
   const listId = useId();
@@ -92,6 +95,7 @@ export default function BoardPicker({
   };
 
   const empty = !loading && !selected;
+  const showError = empty && invalid;
   const label = loading
     ? "加载板块…"
     : selected
@@ -109,12 +113,12 @@ export default function BoardPicker({
       <button
         id={id}
         type="button"
-        className={`j13-board-trigger${empty ? " is-empty" : ""}`}
+        className={`j13-board-trigger${showError ? " is-invalid" : ""}`}
         disabled={disabled || loading || boards.length === 0}
         aria-haspopup="listbox"
         aria-expanded={open}
         aria-controls={listId}
-        aria-invalid={empty || undefined}
+        aria-invalid={showError || undefined}
         onClick={() => setOpen((v) => !v)}
         onKeyDown={onTriggerKeyDown}
       >
@@ -126,7 +130,9 @@ export default function BoardPicker({
         </span>
         <span className="j13-board-trigger-copy">
           <span className="j13-board-trigger-name">{label}</span>
-          {empty ? (
+          {showError ? (
+            <span className="j13-board-trigger-hint">请选择板块后再发布</span>
+          ) : empty ? (
             <span className="j13-board-trigger-hint">发布前必须选择</span>
           ) : loading ? (
             <span className="j13-board-trigger-hint">正在加载</span>
diff --git a/frontend/components/Header.tsx b/frontend/components/Header.tsx
index 7dda737..2bc301a 100644
--- a/frontend/components/Header.tsx
+++ b/frontend/components/Header.tsx
@@ -65,6 +65,10 @@ export default function Header({
   const router = useRouter();
   const pathname = usePathname();
   const allowMessages = useAllowMessages();
+  const hideComposeNav =
+    pathname === "/compose" ||
+    (pathname?.startsWith("/compose/") ?? false) ||
+    /^\/post\/[^/]+\/edit\/?$/.test(pathname || "");
   const [menuOpen, setMenuOpen] = useState(false);
   // 登录态以 SSR 直出为初始值，F5 无切换闪动；router.refresh() 后随 props 校正
   const [user, setUser] = useState<User | null>(initialUser);
@@ -318,9 +322,11 @@ export default function Header({
           {user && <NotificationBell initialUnread={unread} />}
           {user ? (
             <>
-              <Link href="/compose" className="btn btn-primary btn-sm hidden lg:inline-flex">
-                <PenSquare size={14} /> 发帖
-              </Link>
+              {!hideComposeNav && (
+                <Link href="/compose" className="btn btn-primary btn-sm hidden lg:inline-flex">
+                  <PenSquare size={14} /> 发帖
+                </Link>
+              )}
               <UserMenu user={user} onLogout={handleLogout} />
             </>
           ) : (
@@ -368,7 +374,7 @@ export default function Header({
           </form>
           <div className="flex flex-col">
             <MobileLink href="/" active={pathname === "/"}>首页</MobileLink>
-            {user && <MobileLink href="/compose">发帖</MobileLink>}
+            {user && !hideComposeNav && <MobileLink href="/compose">发帖</MobileLink>}
             {user && allowMessages && (
               <MobileLink href="/chat" active={pathname?.startsWith("/chat") ?? false}>
                 <span className="inline-flex items-center gap-2">
diff --git a/frontend/components/PostComposer.tsx b/frontend/components/PostComposer.tsx
index 572a4f1..7989798 100644
--- a/frontend/components/PostComposer.tsx
+++ b/frontend/components/PostComposer.tsx
@@ -31,6 +31,7 @@ import DeadlinePicker, {
   defaultCustomLocal,
   localInputToRFC3339,
   formatLocalPreview,
+  toLocalInputValue,
 } from "@/components/DeadlinePicker";
 import Modal from "@/components/Modal";
 import { realtime, RT_SETTINGS_CHANGED, type RtSettingsData } from "@/lib/realtime";
@@ -49,13 +50,28 @@ const TYPE_ICON: Record<PostTypeValue, LucideIcon> = {
   lottery: Gift,
 };
 
+type TypeFormSnapshot = {
+  pollOptions: string[];
+  pollMulti: boolean;
+  pollAnonymous: boolean;
+  pollExpireDays: number;
+  bountyPoints: number | "";
+  bountyExpireDays: number;
+  lotteryPrizes: { name: string; count: number | "" }[];
+  lotteryExpireDays: number;
+  deadlineMode: DeadlineMode;
+  customEndsLocal: string;
+};
+
 type ComposeDraft = {
   title: string;
   content: string;
   tags: string;
   boardId: number;
   postType?: string;
+  /** @deprecated 旧草稿仅有 JSON 字符串；新草稿用 typeForm */
   typeMeta?: string;
+  typeForm?: TypeFormSnapshot;
   updatedAt: number;
 };
 
@@ -74,6 +90,73 @@ function serializeTags(tags: string[]): string {
   return tags.join(", ");
 }
 
+/** 从旧版 typeMeta JSON 尽量还原类型表单（不完整则用默认） */
+function typeFormFromMeta(
+  postType: PostTypeValue,
+  raw: string | undefined
+): Partial<TypeFormSnapshot> {
+  if (!raw?.trim()) return {};
+  try {
+    const m = JSON.parse(raw) as Record<string, unknown>;
+    const out: Partial<TypeFormSnapshot> = {};
+    const endsAt = typeof m.ends_at === "string" ? m.ends_at : "";
+    const expireDays = Number(m.expire_days);
+    if (endsAt) {
+      const t = Date.parse(endsAt);
+      if (Number.isFinite(t)) {
+        out.deadlineMode = "custom";
+        out.customEndsLocal = toLocalInputValue(new Date(t));
+      }
+    } else if (Number.isFinite(expireDays) && expireDays > 0) {
+      out.deadlineMode = "preset";
+    }
+    if (postType === "poll") {
+      if (Array.isArray(m.options)) {
+        const opts = m.options.map((o) => String(o ?? ""));
+        out.pollOptions = opts.length >= 2 ? opts : ["", ""];
+      }
+      out.pollMulti = !!m.multi;
+      out.pollAnonymous = m.anonymous !== false;
+      if ((POLL_EXPIRE_DAYS as readonly number[]).includes(expireDays)) {
+        out.pollExpireDays = expireDays;
+      }
+    } else if (postType === "bounty") {
+      const p = Number(m.points);
+      out.bountyPoints = p > 0 ? Math.floor(p) : "";
+      if ((BOUNTY_EXPIRE_DAYS as readonly number[]).includes(expireDays)) {
+        out.bountyExpireDays = expireDays;
+      }
+    } else if (postType === "lottery") {
+      const prizes = Array.isArray(m.prizes)
+        ? (m.prizes as { name?: string; count?: number }[]).map((p) => ({
+            name: String(p.name || "").slice(0, 32),
+            count:
+              typeof p.count === "number" && p.count >= 1
+                ? Math.floor(p.count)
+                : ("" as const),
+          }))
+        : [];
+      out.lotteryPrizes =
+        prizes.length > 0 ? prizes : [{ name: "", count: "" as const }];
+      if ((LOTTERY_EXPIRE_DAYS as readonly number[]).includes(expireDays)) {
+        out.lotteryExpireDays = expireDays;
+      }
+    }
+    return out;
+  } catch {
+    return {};
+  }
+}
+
+function draftHasContent(d: ComposeDraft): boolean {
+  if (d.title.trim() || d.content.trim() || d.tags.trim()) return true;
+  if (d.boardId > 0) return true;
+  const pt = normalizePostType(d.postType);
+  if (pt !== "discussion") return true;
+  if (d.typeForm || (d.typeMeta && d.typeMeta.trim())) return true;
+  return false;
+}
+
 function mapPostError(msg: string): string {
   if (!msg) return "操作失败";
   const cooldown = msg.match(/新用户注册\s*(\d+)\s*小时后才能发帖/);
@@ -154,6 +237,8 @@ export default function PostComposer(props: PostComposerProps) {
   const [boardId, setBoardId] = useState(
     isCreate ? props.initialBoardId || 0 : props.boardId || 0
   );
+  /** 仅提交校验失败后为 true，选好板块后清除 */
+  const [boardInvalid, setBoardInvalid] = useState(false);
   const [title, setTitle] = useState(isCreate ? "" : props.initialTitle);
   const [content, setContent] = useState(isCreate ? "" : props.initialContent);
   const [tagList, setTagList] = useState<string[]>(
@@ -379,10 +464,7 @@ export default function PostComposer(props: PostComposerProps) {
           );
         }
         const draft = readDraft();
-        if (
-          draft &&
-          (draft.title.trim() || draft.content.trim() || draft.tags.trim())
-        ) {
+        if (draft && draftHasContent(draft)) {
           setDraftBanner(draft);
           skipDraftSave.current = true;
         } else {
@@ -425,7 +507,14 @@ export default function PostComposer(props: PostComposerProps) {
     if (!isCreate || skipDraftSave.current) return;
     if (draftTimer.current) clearTimeout(draftTimer.current);
     draftTimer.current = setTimeout(() => {
-      if (!title.trim() && !content.trim() && tagList.length === 0) {
+      const emptyCore =
+        !title.trim() && !content.trim() && tagList.length === 0 && boardId <= 0;
+      const emptyType =
+        postType === "discussion" &&
+        pollOptions.every((o) => !o.trim()) &&
+        bountyPoints === "" &&
+        lotteryPrizes.every((p) => !p.name.trim() && p.count === "");
+      if (emptyCore && emptyType) {
         clearDraft();
         return;
       }
@@ -435,7 +524,18 @@ export default function PostComposer(props: PostComposerProps) {
         tags: serializeTags(tagList),
         boardId,
         postType,
-        typeMeta,
+        typeForm: {
+          pollOptions,
+          pollMulti,
+          pollAnonymous,
+          pollExpireDays,
+          bountyPoints,
+          bountyExpireDays,
+          lotteryPrizes,
+          lotteryExpireDays,
+          deadlineMode,
+          customEndsLocal,
+        },
         updatedAt: Date.now(),
       });
     }, DRAFT_DEBOUNCE_MS);
@@ -449,7 +549,16 @@ export default function PostComposer(props: PostComposerProps) {
     tagList,
     boardId,
     postType,
-    typeMeta,
+    pollOptions,
+    pollMulti,
+    pollAnonymous,
+    pollExpireDays,
+    bountyPoints,
+    bountyExpireDays,
+    lotteryPrizes,
+    lotteryExpireDays,
+    deadlineMode,
+    customEndsLocal,
   ]);
 
   const restoreDraft = () => {
@@ -457,9 +566,59 @@ export default function PostComposer(props: PostComposerProps) {
     setTitle(draftBanner.title || "");
     setContent(draftBanner.content || "");
     setTagList(parseTags(draftBanner.tags || ""));
-    if (draftBanner.boardId) setBoardId(draftBanner.boardId);
-    if (draftBanner.postType) setPostType(normalizePostType(draftBanner.postType));
+    if (draftBanner.boardId) {
+      setBoardId(draftBanner.boardId);
+      setBoardInvalid(false);
+    }
+    const nextType = normalizePostType(draftBanner.postType);
+    setPostType(nextType);
+
+    const fromMeta = typeFormFromMeta(nextType, draftBanner.typeMeta);
+    const snap: Partial<TypeFormSnapshot> = {
+      ...fromMeta,
+      ...(draftBanner.typeForm || {}),
+    };
+
+    if (snap.pollOptions && snap.pollOptions.length >= 2) {
+      setPollOptions(snap.pollOptions);
+    }
+    if (typeof snap.pollMulti === "boolean") setPollMulti(snap.pollMulti);
+    if (typeof snap.pollAnonymous === "boolean") {
+      setPollAnonymous(snap.pollAnonymous);
+    }
+    if (
+      typeof snap.pollExpireDays === "number" &&
+      (POLL_EXPIRE_DAYS as readonly number[]).includes(snap.pollExpireDays)
+    ) {
+      setPollExpireDays(snap.pollExpireDays);
+    }
+    if (snap.bountyPoints === "" || typeof snap.bountyPoints === "number") {
+      setBountyPoints(snap.bountyPoints);
+    }
+    if (
+      typeof snap.bountyExpireDays === "number" &&
+      (BOUNTY_EXPIRE_DAYS as readonly number[]).includes(snap.bountyExpireDays)
+    ) {
+      setBountyExpireDays(snap.bountyExpireDays);
+    }
+    if (snap.lotteryPrizes && snap.lotteryPrizes.length > 0) {
+      setLotteryPrizes(snap.lotteryPrizes);
+    }
+    if (
+      typeof snap.lotteryExpireDays === "number" &&
+      (LOTTERY_EXPIRE_DAYS as readonly number[]).includes(snap.lotteryExpireDays)
+    ) {
+      setLotteryExpireDays(snap.lotteryExpireDays);
+    }
+    if (snap.deadlineMode === "custom" || snap.deadlineMode === "preset") {
+      setDeadlineMode(snap.deadlineMode);
+    }
+    if (snap.customEndsLocal) setCustomEndsLocal(snap.customEndsLocal);
+
+    // 编辑态用的 typeMeta 字符串一并同步，避免后续误用空串
     if (draftBanner.typeMeta) setTypeMeta(draftBanner.typeMeta);
+    else if (draftBanner.typeForm) setTypeMeta("");
+
     setDraftBanner(null);
     skipDraftSave.current = false;
     toast("已恢复草稿", "ok");
@@ -586,7 +745,7 @@ export default function PostComposer(props: PostComposerProps) {
     !fileBusy &&
     title.trim().length > 0 &&
     content.trim().length > 0 &&
-    (isCreate ? boardsReady && boardId > 0 : true) &&
+    (isCreate ? boardsReady : true) &&
     (postType !== "poll" ||
       pollOptions.map((o) => o.trim()).filter(Boolean).length >= 2) &&
     (postType !== "bounty" ||
@@ -689,7 +848,11 @@ export default function PostComposer(props: PostComposerProps) {
     }
     if (isCreate && (!boardsReady || boardId <= 0)) {
       if (isNarrow) setRailOpen(true);
+      setBoardInvalid(true);
       reportSubmitError("请选择板块");
+      window.setTimeout(() => {
+        document.getElementById("compose-board")?.focus();
+      }, isNarrow ? 80 : 0);
       return;
     }
     if (
@@ -764,9 +927,6 @@ export default function PostComposer(props: PostComposerProps) {
       : isCreate
         ? "发布"
         : "保存";
-  const selectedBoardName = isCreate
-    ? boards.find((b) => b.id === boardId)?.name
-    : props.boardName;
   const typeLabel = POST_TYPES.find((t) => t.value === postType)?.label || "讨论";
   const blockReason = loading
     ? ""
@@ -776,19 +936,17 @@ export default function PostComposer(props: PostComposerProps) {
         ? "请填写标题"
         : !content.trim()
           ? "请填写正文"
-          : isCreate && (!boardsReady || boardId <= 0)
-            ? "请选择板块"
-            : postType === "poll" &&
-                pollOptions.map((o) => o.trim()).filter(Boolean).length < 2
-              ? "请至少填写 2 个投票选项"
-              : postType === "bounty" &&
-                  (typeof bountyPoints !== "number" || bountyPoints < 1)
-                ? "请填写悬赏积分"
-                : bountyShort
-                  ? "积分不足"
-                  : postType === "lottery" && !lotteryPrizesReady
-                    ? "请填写奖品名称与数量"
-                    : "";
+          : postType === "poll" &&
+              pollOptions.map((o) => o.trim()).filter(Boolean).length < 2
+            ? "请至少填写 2 个投票选项"
+            : postType === "bounty" &&
+                (typeof bountyPoints !== "number" || bountyPoints < 1)
+              ? "请填写悬赏积分"
+              : bountyShort
+                ? "积分不足"
+                : postType === "lottery" && !lotteryPrizesReady
+                  ? "请填写奖品名称与数量"
+                  : "";
   const railHidden = isNarrow && !railOpen;
   const typeSetupKind =
     postType === "poll" || postType === "bounty" || postType === "lottery";
@@ -1284,16 +1442,19 @@ export default function PostComposer(props: PostComposerProps) {
       <section className="j13-compose-rail-block" aria-label="板块">
         <label className="j13-compose-section-title" htmlFor="compose-board">
           板块
-          {isCreate ? <span className="j13-compose-req">必选</span> : null}
         </label>
         {isCreate ? (
           <BoardPicker
             id="compose-board"
             boards={boards}
             value={boardId}
-            onChange={setBoardId}
+            onChange={(id) => {
+              setBoardId(id);
+              setBoardInvalid(false);
+            }}
             disabled={loading}
             loading={!boardsReady}
+            invalid={boardInvalid}
           />
         ) : (
           <BoardBadge
@@ -1305,7 +1466,7 @@ export default function PostComposer(props: PostComposerProps) {
 
       <section className="j13-compose-rail-block" aria-label="基本信息">
         <h2 className="j13-compose-section-title">帖子类型</h2>
-        <div className="j13-compose-typebar" role="radiogroup" aria-label="帖子类型">
+        <div className="j13-compose-typebar is-compact" role="radiogroup" aria-label="帖子类型">
           {POST_TYPES.map((t) => {
             const Icon = TYPE_ICON[t.value];
             const isOn = postType === t.value;
@@ -1313,6 +1474,7 @@ export default function PostComposer(props: PostComposerProps) {
             const status = isOn ? typeChipStatus : null;
             const needsSetup =
               t.value === "poll" || t.value === "bounty" || t.value === "lottery";
+            const hintText = status ? status.text : isOn ? t.hint : "";
             return (
               <div
                 key={t.value}
@@ -1327,22 +1489,28 @@ export default function PostComposer(props: PostComposerProps) {
                   className="j13-compose-typeopt-hit"
                   disabled={locked}
                   data-tip={
-                    !isCreate && t.value !== postType ? "编辑时不可更改类型" : undefined
+                    !isCreate && t.value !== postType
+                      ? "编辑时不可更改类型"
+                      : !isOn
+                        ? t.hint
+                        : undefined
                   }
                   onClick={() => onPickType(t.value)}
                 >
                   <span className="j13-compose-typeopt-ico" aria-hidden>
-                    <Icon size={16} strokeWidth={2.2} />
+                    <Icon size={15} strokeWidth={2.2} />
                   </span>
                   <span className="j13-compose-typeopt-copy">
                     <span className="j13-compose-typeopt-label">{t.label}</span>
-                    <span
-                      className={`j13-compose-typeopt-hint${
-                        status ? (status.warn ? " is-warn" : " is-status") : ""
-                      }`}
-                    >
-                      {status ? status.text : t.hint}
-                    </span>
+                    {hintText ? (
+                      <span
+                        className={`j13-compose-typeopt-hint${
+                          status ? (status.warn ? " is-warn" : " is-status") : ""
+                        }`}
+                      >
+                        {hintText}
+                      </span>
+                    ) : null}
                   </span>
                 </button>
                 {isOn && needsSetup ? (
@@ -1432,9 +1600,13 @@ export default function PostComposer(props: PostComposerProps) {
               {isCreate ? "写新帖" : "编辑帖子"}
             </h1>
             <p className="j13-compose-toolbar-sub">
-              {selectedBoardName || (isCreate && !boardsReady ? "加载板块…" : "选择板块")}
-              {" · "}
-              {typeLabel}
+              {draftBanner
+                ? `有未恢复的本地草稿${
+                    draftBanner.updatedAt
+                      ? ` · ${new Date(draftBanner.updatedAt).toLocaleString("zh-CN")}`
+                      : ""
+                  }`
+                : typeLabel}
             </p>
           </div>
         </div>
@@ -1462,7 +1634,7 @@ export default function PostComposer(props: PostComposerProps) {
           <button
             type="submit"
             disabled={!canSubmit}
-            className="btn btn-primary btn-sm min-w-[4.75rem]"
+            className="btn btn-primary min-w-[5.5rem] h-9 px-4 text-[13.5px] font-semibold"
           >
             {submitLabel}
           </button>
diff --git a/frontend/components/RealtimeProvider.tsx b/frontend/components/RealtimeProvider.tsx
index c315fe3..f135a1c 100644
--- a/frontend/components/RealtimeProvider.tsx
+++ b/frontend/components/RealtimeProvider.tsx
@@ -9,7 +9,8 @@ export default function RealtimeProvider({ userId }: { userId: number | null })
   useEffect(() => {
     if (userId) {
       realtime.connect();
-      return () => realtime.disconnect();
+      // 用 release 而非立刻 disconnect：避开 Strict Mode / HMR 瞬时卸载打断握手
+      return () => realtime.release();
     }
     realtime.disconnect();
   }, [userId]);
diff --git a/frontend/lib/realtime.ts b/frontend/lib/realtime.ts
index c727916..6636dd9 100644
--- a/frontend/lib/realtime.ts
+++ b/frontend/lib/realtime.ts
@@ -168,6 +168,8 @@ class RealtimeClient {
   private retryCount = 0;
   private reconnectTimer: ReturnType<typeof setTimeout> | null = null;
   private heartbeatTimer: ReturnType<typeof setInterval> | null = null;
+  // Strict Mode / HMR 会瞬时卸载→重挂；延迟断开，避免握手未完成就被 close 刷控制台
+  private releaseTimer: ReturnType<typeof setTimeout> | null = null;
   private readonly handlers = new Map<string, Set<RtHandler>>();
   private readonly presenceHandlers = new Set<RtHandler<RtPresenceData>>();
   private onlineIds = new Set<number>();
@@ -177,6 +179,7 @@ class RealtimeClient {
   /** 建立连接（幂等）；登录后调用 */
   connect(): void {
     if (typeof window === "undefined") return;
+    this.clearReleaseTimer();
     this.wanted = true;
     if (this.state === "open" || this.state === "connecting") return;
     this.clearReconnectTimer();
@@ -185,8 +188,21 @@ class RealtimeClient {
     document.addEventListener("visibilitychange", this.handleVisible);
   }
 
+  /**
+   * 组件卸载时调用：短暂延迟后再真正断开。
+   * 若 Strict Mode / HMR 随即重新 connect，会取消本次断开，保留握手中的连接。
+   */
+  release(delayMs = 120): void {
+    this.clearReleaseTimer();
+    this.releaseTimer = setTimeout(() => {
+      this.releaseTimer = null;
+      this.disconnect();
+    }, delayMs);
+  }
+
   /** 主动断开（登出/卸载）；不再自动重连 */
   disconnect(): void {
+    this.clearReleaseTimer();
     this.wanted = false;
     window.removeEventListener("online", this.handleNetworkBack);
     document.removeEventListener("visibilitychange", this.handleVisible);
@@ -194,7 +210,15 @@ class RealtimeClient {
     this.clearHeartbeat();
     if (this.ws) {
       this.ws.onclose = null;
-      this.ws.close(1000, "client logout");
+      // CONNECTING 时直接 close 会触发浏览器警告；改等 open 后再关
+      if (this.ws.readyState === WebSocket.CONNECTING) {
+        const pending = this.ws;
+        pending.onopen = () => {
+          pending.close(1000, "client logout");
+        };
+      } else {
+        this.ws.close(1000, "client logout");
+      }
       this.ws = null;
     }
     this.state = "idle";
@@ -329,6 +353,13 @@ class RealtimeClient {
     }
   }
 
+  private clearReleaseTimer(): void {
+    if (this.releaseTimer) {
+      clearTimeout(this.releaseTimer);
+      this.releaseTimer = null;
+    }
+  }
+
   private clearHeartbeat(): void {
     if (this.heartbeatTimer) {
       clearInterval(this.heartbeatTimer);