diff --git a/tests/test_company_confirm_status_color.py b/tests/test_company_confirm_status_color.py
index ec3c497..34c1f67 100644
--- a/tests/test_company_confirm_status_color.py
+++ b/tests/test_company_confirm_status_color.py
@@ -50,7 +50,7 @@ class ConfirmStatusSourceContractTests(unittest.TestCase):
         self.assertIn('id="workspacePendingStatus"', html)
         self.assertIn('id="workspaceFlowSub"', html)
         self.assertIn('data-view-link="reconcile"', html)
-        self.assertIn("app.js?v=17", html)
+        self.assertIn("app.js?v=18", html)
         # 静态初值仍为进行中（黄），由 JS 在 pending=0 时切 done
         self.assertRegex(html, r'class="flow-step doing"[^>]*data-view-link="reconcile"')
 
diff --git a/tests/test_company_transfers_page.py b/tests/test_company_transfers_page.py
index 2a0cf6b..dec2b1c 100644
--- a/tests/test_company_transfers_page.py
+++ b/tests/test_company_transfers_page.py
@@ -31,8 +31,8 @@ class TransfersPageSourceContractTests(unittest.TestCase):
         self.assertIn('id="transferEvidenceDrawer"', html)
         self.assertIn("期间净变动", html)
         self.assertNotIn("本公司往来合计", html)
-        self.assertIn("design-system.css?v=12", html)
-        self.assertIn("app.js?v=17", html)
+        self.assertIn("design-system.css?v=13", html)
+        self.assertIn("app.js?v=18", html)
         # 侧栏顺序：流水管理 → 转账往来 → 往来确认
         flows = html.index('data-view="flows"')
         transfers = html.index('data-view="transfers"')
diff --git a/tests/test_hel351_controls.py b/tests/test_hel351_controls.py
new file mode 100644
index 0000000..a4368ac
--- /dev/null
+++ b/tests/test_hel351_controls.py
@@ -0,0 +1,271 @@
+"""HEL-351: 夜间控件、一次性初始密码交付、缩放滚动条契约。"""
+
+from __future__ import annotations
+
+import os
+import threading
+import unittest
+from functools import partial
+from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+WEB = ROOT / "web"
+
+try:
+    from playwright.sync_api import sync_playwright
+except ImportError:  # pragma: no cover
+    sync_playwright = None
+
+
+def _prepare_chrome_libs() -> Path | None:
+    candidates = [ROOT / ".chrome-libs" / "lib"]
+    for lib_dir in candidates:
+        if (lib_dir / "libatk-1.0.so.0").exists():
+            current = os.environ.get("LD_LIBRARY_PATH", "")
+            prefix = str(lib_dir)
+            if prefix not in current.split(":"):
+                os.environ["LD_LIBRARY_PATH"] = (
+                    f"{prefix}:{current}" if current else prefix
+                )
+            return lib_dir
+    return None
+
+
+def _chromium_available() -> bool:
+    if not sync_playwright:
+        return False
+    _prepare_chrome_libs()
+    try:
+        with sync_playwright() as p:
+            browser = p.chromium.launch(headless=True, args=["--no-sandbox"])
+            browser.close()
+        return True
+    except Exception:
+        return False
+
+
+class Hel351SourceContractTests(unittest.TestCase):
+    def test_night_select_and_scrollbar_use_tokens(self) -> None:
+        css = (WEB / "design-system.css").read_text(encoding="utf-8")
+        self.assertIn("color-scheme: light", css)
+        self.assertIn("color-scheme: dark", css)
+        self.assertIn("scrollbar-color: var(--gold) var(--surface-2)", css)
+        self.assertIn("html[data-theme=\"night\"] ::-webkit-scrollbar-thumb", css)
+        self.assertIn("background-color: var(--gold)", css)
+        self.assertIn(".select option", css)
+        self.assertIn("background-color: var(--surface)", css)
+        self.assertIn("html[data-theme=\"night\"] .ds-dp-day.is-selected", css)
+        self.assertIn("color: var(--gold)", css)
+        self.assertNotIn("overflow: hidden; /* HEL-351", css)
+
+    def test_tabs_and_table_split_overflow_axes(self) -> None:
+        css = (WEB / "design-system.css").read_text(encoding="utf-8")
+        tabs = css[css.index(".tabs {") : css.index(".tabs button")]
+        self.assertIn("overflow-x: auto", tabs)
+        self.assertIn("overflow-y: hidden", tabs)
+        wrap = css[css.index(".table-wrap {") : css.index(".table-wrap.dash-master-scroll")]
+        self.assertIn("overflow-x: auto", wrap)
+        self.assertIn("overflow-y: hidden", wrap)
+        self.assertIn(".table-wrap.dash-master-scroll", css)
+        self.assertIn("overflow-y: auto", css[css.index(".table-wrap.dash-master-scroll") :][:180])
+
+    def test_admin_delivers_once_password_window(self) -> None:
+        html = (WEB / "admin.html").read_text(encoding="utf-8")
+        self.assertIn('id="credentialDialog"', html)
+        self.assertIn('id="cred-pass"', html)
+        self.assertIn('id="cred-copy-pass"', html)
+        self.assertIn("datepicker.js?v=1", html)
+        self.assertNotIn("初始密码由管理员统一发放", html)
+        js = (WEB / "app.js").read_text(encoding="utf-8")
+        self.assertIn("function showOnceCredentials(", js)
+        self.assertIn("function wipeCredentials(", js)
+        self.assertNotIn("初始密码已生成（仅此一次显示）：${result.initial_password}", js)
+        self.assertNotIn("临时密码已生成（仅此一次）：${result.initial_password}", js)
+        self.assertIn('openModal("credentialDialog")', js)
+
+    def test_datepicker_follows_trigger_and_flips(self) -> None:
+        js = (WEB / "datepicker.js").read_text(encoding="utf-8")
+        css = (WEB / "design-system.css").read_text(encoding="utf-8")
+        self.assertIn("visualViewport", js)
+        self.assertIn("getBoundingClientRect", js)
+        self.assertIn("rect.top - gap - height", js)
+        self.assertIn('addEventListener("scroll", position, true)', js)
+        block = css[css.index(".ds-datepicker {") : css.index(".ds-datepicker[hidden]")]
+        self.assertIn("position: fixed", block)
+        self.assertIn("z-index: var(--z-tooltip)", block)
+
+
+@unittest.skipUnless(sync_playwright, "playwright 未安装，跳过浏览器探针")
+@unittest.skipUnless(_chromium_available(), "chromium 无法启动，跳过浏览器探针")
+class Hel351BrowserProbeTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls) -> None:
+        handler = partial(SimpleHTTPRequestHandler, directory=str(WEB))
+        cls.httpd = ThreadingHTTPServer(("127.0.0.1", 0), handler)
+        cls.port = cls.httpd.server_address[1]
+        cls.thread = threading.Thread(target=cls.httpd.serve_forever, daemon=True)
+        cls.thread.start()
+        cls.base = f"http://127.0.0.1:{cls.port}"
+
+    @classmethod
+    def tearDownClass(cls) -> None:
+        cls.httpd.shutdown()
+        cls.httpd.server_close()
+
+    def _open(self, page, *, night: bool, width: int = 1440, zoom: float = 1) -> None:
+        page.set_viewport_size({"width": width, "height": 900})
+        theme_attr = 'data-theme="night"' if night else 'data-theme="day"'
+        page.set_content(
+            f"""<!doctype html>
+<html lang="zh-CN" class="v-fusion" {theme_attr}>
+<head>
+<meta charset="UTF-8"/>
+<link rel="stylesheet" href="{self.base}/design-system.css"/>
+</head>
+<body class="is-app" {theme_attr}>
+  <div class="tabs" id="probe-tabs">
+    <button class="active">全部</button>
+    <button>流水断档</button>
+    <button>单边匹配</button>
+    <button>科目确认</button>
+    <button>起算区间校准</button>
+    <button>银行账户登记</button>
+    <button>公司手工记录</button>
+    <button>重开审批</button>
+  </div>
+  <select class="select" id="probe-select">
+    <option>河南金牛农业科技发展有限公司</option>
+    <option>河南金牛煤业有限公司</option>
+  </select>
+  <input class="input" id="probe-date" type="date" value="2026-09-01" />
+  <script src="{self.base}/datepicker.js"></script>
+</body></html>""",
+            wait_until="domcontentloaded",
+        )
+        page.wait_for_function("() => window.JinniuDatePicker")
+        if zoom != 1:
+            page.evaluate(f"() => {{ document.body.style.zoom = '{zoom}'; }}")
+
+    def test_night_select_is_not_white_on_white(self) -> None:
+        with sync_playwright() as p:
+            browser = p.chromium.launch(headless=True, args=["--no-sandbox"])
+            page = browser.new_page(viewport={"width": 1440, "height": 900})
+            self._open(page, night=True)
+            colors = page.evaluate(
+                """() => {
+                  const sel = document.getElementById('probe-select');
+                  const cs = getComputedStyle(sel);
+                  const opt = getComputedStyle(sel.options[0]);
+                  return {
+                    scheme: getComputedStyle(document.documentElement).colorScheme,
+                    bg: cs.backgroundColor,
+                    color: cs.color,
+                    optionBg: opt.backgroundColor,
+                    optionColor: opt.color,
+                  };
+                }"""
+            )
+            browser.close()
+        self.assertEqual("dark", colors["scheme"])
+        self.assertNotEqual("rgb(255, 255, 255)", colors["bg"])
+        self.assertNotEqual("rgb(255, 255, 255)", colors["color"])
+        self.assertNotEqual("rgb(255, 255, 255)", colors["optionBg"])
+
+    def test_tabs_have_no_vertical_scrollbar_at_zoom(self) -> None:
+        with sync_playwright() as p:
+            browser = p.chromium.launch(headless=True, args=["--no-sandbox"])
+            page = browser.new_page(viewport={"width": 390, "height": 800})
+            self._open(page, night=False, width=390, zoom=1.25)
+            metrics = page.evaluate(
+                """() => {
+                  const tabs = document.getElementById('probe-tabs');
+                  const cs = getComputedStyle(tabs);
+                  return {
+                    overflowX: cs.overflowX,
+                    overflowY: cs.overflowY,
+                    clientHeight: tabs.clientHeight,
+                    scrollHeight: tabs.scrollHeight,
+                    clientWidth: tabs.clientWidth,
+                    scrollWidth: tabs.scrollWidth,
+                  };
+                }"""
+            )
+            browser.close()
+        self.assertEqual("auto", metrics["overflowX"])
+        self.assertEqual("hidden", metrics["overflowY"])
+        self.assertLessEqual(metrics["scrollHeight"] - metrics["clientHeight"], 1)
+
+    def test_datepicker_anchors_and_night_gold(self) -> None:
+        with sync_playwright() as p:
+            browser = p.chromium.launch(headless=True, args=["--no-sandbox"])
+            page = browser.new_page(viewport={"width": 1440, "height": 900})
+            self._open(page, night=True)
+            page.click("#probe-date")
+            page.wait_for_selector("#ds-datepicker:not([hidden])")
+            box = page.evaluate(
+                """() => {
+                  const input = document.getElementById('probe-date');
+                  const panel = document.getElementById('ds-datepicker');
+                  const ir = input.getBoundingClientRect();
+                  const pr = panel.getBoundingClientRect();
+                  const selected = panel.querySelector('.ds-dp-day.is-selected');
+                  const cs = selected ? getComputedStyle(selected) : null;
+                  return {
+                    inputBottom: ir.bottom,
+                    inputLeft: ir.left,
+                    panelTop: pr.top,
+                    panelLeft: pr.left,
+                    panelRight: pr.right,
+                    viewportWidth: window.innerWidth,
+                    selectedColor: cs && cs.color,
+                    selectedBg: cs && cs.backgroundColor,
+                    hidden: panel.hidden,
+                  };
+                }"""
+            )
+            browser.close()
+        self.assertFalse(box["hidden"])
+        self.assertLess(abs(box["panelTop"] - box["inputBottom"]), 24)
+        self.assertLess(abs(box["panelLeft"] - box["inputLeft"]), 24)
+        self.assertLess(box["panelRight"], box["viewportWidth"])
+        self.assertIsNotNone(box["selectedColor"])
+        self.assertNotEqual("rgb(255, 255, 255)", box["selectedBg"])
+        self.assertIn("217", box["selectedColor"])
+
+    def test_datepicker_flips_when_near_bottom(self) -> None:
+        with sync_playwright() as p:
+            browser = p.chromium.launch(headless=True, args=["--no-sandbox"])
+            page = browser.new_page(viewport={"width": 1440, "height": 500})
+            page.set_content(
+                f"""<!doctype html>
+<html lang="zh-CN" class="v-fusion" data-theme="night">
+<head>
+<meta charset="UTF-8"/>
+<link rel="stylesheet" href="{self.base}/design-system.css"/>
+</head>
+<body class="is-app" data-theme="night" style="min-height:100vh">
+  <input class="input" id="probe-date" type="date" value="2026-09-01" style="position:fixed;left:24px;bottom:12px;width:180px" />
+  <script src="{self.base}/datepicker.js"></script>
+</body></html>""",
+                wait_until="domcontentloaded",
+            )
+            page.wait_for_function("() => window.JinniuDatePicker")
+            page.click("#probe-date")
+            page.wait_for_selector("#ds-datepicker:not([hidden])")
+            box = page.evaluate(
+                """() => {
+                  const input = document.getElementById('probe-date');
+                  const panel = document.getElementById('ds-datepicker');
+                  const ir = input.getBoundingClientRect();
+                  const pr = panel.getBoundingClientRect();
+                  return { inputTop: ir.top, panelBottom: pr.bottom, panelTop: pr.top };
+                }"""
+            )
+            browser.close()
+        self.assertLess(box["panelBottom"], box["inputTop"] + 2)
+        self.assertGreater(box["inputTop"] - box["panelBottom"], 0)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/tests/test_reminders_page.py b/tests/test_reminders_page.py
index fd99ddb..a3d1cee 100644
--- a/tests/test_reminders_page.py
+++ b/tests/test_reminders_page.py
@@ -37,8 +37,8 @@ class RemindersPageSourceContractTests(unittest.TestCase):
         self.assertIn('id="reminder-tbody"', html)
         self.assertIn('id="reminder-tabs"', html)
         self.assertIn('id="reminder-detail-drawer"', html)
-        self.assertIn("design-system.css?v=12", html)
-        self.assertIn("app.js?v=17", html)
+        self.assertIn("design-system.css?v=13", html)
+        self.assertIn("app.js?v=18", html)
         pending = html.index('id="pending-reminders-card"')
         history = html.index('id="reminder-history-card"')
         send = html.index('id="send-reminder-card"')
@@ -135,7 +135,7 @@ class RemindersPageLayoutSmokeTests(unittest.TestCase):
 
     def test_send_flow_columns_and_no_page_overflow(self) -> None:
         html = (WEB / "admin.html").read_text(encoding="utf-8")
-        self.assertIn("app.js?v=17", html)
+        self.assertIn("app.js?v=18", html)
         with sync_playwright() as p:
             browser = p.chromium.launch()
             page = browser.new_page()
diff --git a/tests/test_server_auth.py b/tests/test_server_auth.py
index 9478c0d..48e0242 100644
--- a/tests/test_server_auth.py
+++ b/tests/test_server_auth.py
@@ -540,6 +540,9 @@ class ServerAuthMatrixTests(unittest.TestCase):
         status, _, data = self.admin.get("/api/admin/users")
         self.assertEqual(200, status)
         bodies.append(data)
+        status, _, data = self.admin.get("/api/admin/companies")
+        self.assertEqual(200, status)
+        bodies.append(data)
         status, _, data = self.admin.get("/api/admin/audit-log?limit=100")
         self.assertEqual(200, status)
         bodies.append(data)
@@ -548,7 +551,9 @@ class ServerAuthMatrixTests(unittest.TestCase):
         status, _, data = self.cashier_a.get("/api/batches")
         bodies.append(data)
         for body in bodies:
-            self.assertNotIn("password_hash", body.decode("utf-8"))
+            text = body.decode("utf-8")
+            self.assertNotIn("password_hash", text)
+            self.assertNotIn("initial_password", text)
 
     def test_audit_log_contains_no_plaintext_passwords(self) -> None:
         connection = connect(self.db_path)
diff --git a/web/admin.html b/web/admin.html
index 115294a..d8068af 100644
--- a/web/admin.html
+++ b/web/admin.html
@@ -11,7 +11,7 @@
         document.documentElement.classList.add("v-fusion");
       })();
     </script>
-    <link rel="stylesheet" href="design-system.css?v=12" />
+    <link rel="stylesheet" href="design-system.css?v=13" />
   </head>
   <body class="is-app" data-portal="admin">
     <a class="skip-link" href="#main-content">跳到主要内容</a>
@@ -512,7 +512,7 @@
               </div>
               <div class="table-foot" style="border: 1px solid var(--border); border-radius: 0 0 var(--radius-lg) var(--radius-lg);">
                 <span id="companyFoot">共 0 家公司</span>
-                <span class="meta">登录账号初始密码由管理员统一发放</span>
+                <span class="meta">创建账号时生成一次性随机密码，仅当时显示一次</span>
               </div>
             </div>
           </section>
@@ -876,7 +876,7 @@
           <span class="modal-title">新增成员公司</span>
           <button type="button" class="modal-close" data-close="companyDialog" aria-label="关闭">×</button>
         </div>
-        <p class="modal-sub">登记后系统将生成公司端登录账号，初始密码由管理员统一发放。</p>
+        <p class="modal-sub">登记后可同时生成公司端登录账号。系统会发一次性随机初始密码，仅创建成功时显示一次，请当场复制后交给出纳；首次登录必须改密。没有全公司通用默认密码。</p>
         <form id="companyForm" novalidate>
           <div class="field" style="margin-bottom: 12px;">
             <label for="f-name">公司全称</label>
@@ -899,7 +899,7 @@
               <input class="input" id="f-cashier" name="cashier" type="text" required />
             </div>
           </div>
-          <p class="hint" style="margin-top: 10px;">创建后生成随机初始密码，仅显示一次，首次登录必须修改。</p>
+          <p class="hint" style="margin-top: 10px;">创建成功后弹出一次性口令窗口，可复制账号和密码。关闭后无法再次查看明文，列表与日志也不会保存密码。</p>
           <div class="modal-actions">
             <button type="button" class="btn" data-close="companyDialog">取消</button>
             <button type="submit" class="btn btn-primary">创建公司与账号</button>
@@ -908,6 +908,33 @@
       </div>
     </div>
 
+    <!-- 一次性初始密码领取（关闭后从页面清除明文） -->
+    <div class="modal-backdrop" id="credentialDialog">
+      <div class="modal" role="dialog" aria-labelledby="cred-title" aria-modal="true">
+        <div class="modal-head">
+          <span class="modal-title" id="cred-title">一次性初始密码</span>
+          <button type="button" class="modal-close" data-close="credentialDialog" aria-label="关闭">×</button>
+        </div>
+        <p class="modal-sub" id="cred-sub">请立即复制并交给出纳。关闭后无法再次查看明文。</p>
+        <div class="cred-box">
+          <div class="cred-row">
+            <span class="cred-label">登录账号</span>
+            <span class="cred-value" id="cred-user"></span>
+            <button type="button" class="btn btn-sm" id="cred-copy-user">复制</button>
+          </div>
+          <div class="cred-row">
+            <span class="cred-label">初始密码</span>
+            <span class="cred-value" id="cred-pass"></span>
+            <button type="button" class="btn btn-sm btn-primary" id="cred-copy-pass">复制密码</button>
+          </div>
+        </div>
+        <p class="cred-warn">对方首次登录必须修改密码。重置密码同样只展示这一次。</p>
+        <div class="modal-actions">
+          <button type="button" class="btn btn-primary" data-close="credentialDialog">我已抄录</button>
+        </div>
+      </div>
+    </div>
+
     <!-- 公司详情弹窗 -->
     <div class="modal-backdrop" id="modal-detail">
       <div class="modal wide">
@@ -1228,6 +1255,7 @@
     </div>
     <div class="toast-region" id="toastRegion" aria-live="polite"></div>
     <script src="theme.js?v=1"></script>
-    <script src="app.js?v=17"></script>
+    <script src="datepicker.js?v=1"></script>
+    <script src="app.js?v=18"></script>
   </body>
 </html>
diff --git a/web/app.js b/web/app.js
index 2a4c4c8..d98d0e6 100644
--- a/web/app.js
+++ b/web/app.js
@@ -129,6 +129,50 @@ function showToast(title, detail = "", kind = "info") {
   });
 }
 
+function copyText(value, button) {
+  const text = String(value || "");
+  const done = () => {
+    if (!button) return;
+    const previous = button.textContent;
+    button.textContent = "已复制";
+    window.setTimeout(() => { button.textContent = previous; }, 1400);
+  };
+  const fallback = () => {
+    const area = document.createElement("textarea");
+    area.value = text;
+    area.setAttribute("readonly", "");
+    area.style.position = "fixed";
+    area.style.left = "-9999px";
+    document.body.append(area);
+    area.select();
+    try { document.execCommand("copy"); } catch (err) { /* ignore */ }
+    area.remove();
+    done();
+  };
+  if (navigator.clipboard && navigator.clipboard.writeText) {
+    navigator.clipboard.writeText(text).then(done).catch(fallback);
+  } else {
+    fallback();
+  }
+}
+
+function wipeCredentials() {
+  const user = $("#cred-user");
+  const pass = $("#cred-pass");
+  if (user) user.textContent = "";
+  if (pass) pass.textContent = "";
+}
+
+function showOnceCredentials({ title, subtitle, username, password }) {
+  const titleEl = $("#cred-title");
+  const subEl = $("#cred-sub");
+  if (titleEl && title) titleEl.textContent = title;
+  if (subEl && subtitle) subEl.textContent = subtitle;
+  if ($("#cred-user")) $("#cred-user").textContent = username || "";
+  if ($("#cred-pass")) $("#cred-pass").textContent = password || "";
+  openModal("credentialDialog");
+}
+
 function toastIfLocked(result) {
   const msg = String(result?.message || "");
   if (!(result?.year_month || /已结账锁定/.test(msg))) return false;
@@ -2675,9 +2719,24 @@ function initAdmin() {
   }));
   $("#auditCompany")?.addEventListener("change", filterAuditRows);
 
-  document.querySelectorAll("[data-close]").forEach((el) => el.addEventListener("click", () => closeModal(el.dataset.close)));
-  document.querySelectorAll(".modal-backdrop").forEach((bd) => bd.addEventListener("click", (e) => { if (e.target === bd) bd.classList.remove("open"); }));
-  document.addEventListener("keydown", (e) => { if (e.key === "Escape") document.querySelectorAll(".modal-backdrop.open").forEach((m) => m.classList.remove("open")); });
+  document.querySelectorAll("[data-close]").forEach((el) => el.addEventListener("click", () => {
+    closeModal(el.dataset.close);
+    if (el.dataset.close === "credentialDialog") wipeCredentials();
+  }));
+  $("#cred-copy-user")?.addEventListener("click", () => copyText($("#cred-user")?.textContent, $("#cred-copy-user")));
+  $("#cred-copy-pass")?.addEventListener("click", () => copyText($("#cred-pass")?.textContent, $("#cred-copy-pass")));
+  document.querySelectorAll(".modal-backdrop").forEach((bd) => bd.addEventListener("click", (e) => {
+    if (e.target !== bd) return;
+    bd.classList.remove("open");
+    if (bd.id === "credentialDialog") wipeCredentials();
+  }));
+  document.addEventListener("keydown", (e) => {
+    if (e.key !== "Escape") return;
+    document.querySelectorAll(".modal-backdrop.open").forEach((m) => {
+      m.classList.remove("open");
+      if (m.id === "credentialDialog") wipeCredentials();
+    });
+  });
 
   async function submitAuditResult(row) {
     const decision = state.auditDecision;
@@ -2889,11 +2948,17 @@ function initAdmin() {
     closeModal("companyDialog");
     form.reset();
     await loadAdminCompanies();
-    showToast(
-      accountCreated ? "公司与账号已创建" : "公司已创建",
-      accountCreated ? `账号 ${result.username} 的初始密码已生成（仅此一次显示）：${result.initial_password}，首次登录必须修改` : "可稍后在账号管理中创建公司账号",
-      "success",
-    );
+    if (accountCreated) {
+      showOnceCredentials({
+        title: "一次性初始密码",
+        subtitle: "请立即复制并交给出纳。关闭后无法再次查看明文。",
+        username: result.username,
+        password: result.initial_password,
+      });
+      showToast("公司与账号已创建", "请在一次性口令窗口复制初始密码，关闭后无法再看", "success");
+    } else {
+      showToast("公司已创建", "可稍后在账号管理中创建公司账号", "success");
+    }
   });
 
   function openCompanyDetail(companyId) {
@@ -2933,8 +2998,14 @@ function initAdmin() {
     if (!response || !response.ok) { showToast("重置失败", result?.message || "请稍后重试", "danger"); return; }
     $("#btn-reset-pwd").disabled = true;
     $("#btn-reset-pwd").textContent = "已重置";
-    $("#d-login-meta").textContent = `临时密码已生成（仅此一次）：${result.initial_password}，首次登录必须修改`;
-    showToast("密码已重置", "临时密码仅本次显示，首次登录必须修改", "success");
+    $("#d-login-meta").textContent = "临时密码已在一次性窗口展示，关闭后无法再查看。";
+    showOnceCredentials({
+      title: "临时密码已生成",
+      subtitle: "仅此一次显示。旧会话已失效，首次登录必须修改。",
+      username: user.username,
+      password: result.initial_password,
+    });
+    showToast("密码已重置", "请在一次性口令窗口复制后交给出纳", "success");
   });
 
   const remind = $("#cs-remind");
diff --git a/web/company.html b/web/company.html
index 9225a8a..c59fcb8 100644
--- a/web/company.html
+++ b/web/company.html
@@ -11,7 +11,7 @@
         document.documentElement.classList.add("v-fusion");
       })();
     </script>
-    <link rel="stylesheet" href="design-system.css?v=12" />
+    <link rel="stylesheet" href="design-system.css?v=13" />
   </head>
   <body class="is-app" data-portal="company">
     <a class="skip-link" href="#main-content">跳到主要内容</a>
@@ -1044,6 +1044,7 @@
 
     <div class="toast-region" id="toastRegion" aria-live="polite"></div>
     <script src="theme.js?v=1"></script>
-    <script src="app.js?v=17"></script>
+    <script src="datepicker.js?v=1"></script>
+    <script src="app.js?v=18"></script>
   </body>
 </html>
diff --git a/web/datepicker.js b/web/datepicker.js
new file mode 100644
index 0000000..d79c050
--- /dev/null
+++ b/web/datepicker.js
@@ -0,0 +1,268 @@
+/* 锚定在日期输入旁的页内日历。不引入第三方库；滚动/缩放后跟随触发器。 */
+(function (global) {
+  var WEEK = ["日", "一", "二", "三", "四", "五", "六"];
+  var panel = null;
+  var grid = null;
+  var titleEl = null;
+  var activeInput = null;
+  var viewYear = 0;
+  var viewMonth = 0;
+  var bound = false;
+
+  function pad(n) {
+    return n < 10 ? "0" + n : String(n);
+  }
+
+  function toISO(year, month, day) {
+    return year + "-" + pad(month + 1) + "-" + pad(day);
+  }
+
+  function parseISO(value) {
+    var match = /^(\d{4})-(\d{2})-(\d{2})$/.exec(String(value || "").trim());
+    if (!match) return null;
+    var year = Number(match[1]);
+    var month = Number(match[2]) - 1;
+    var day = Number(match[3]);
+    var date = new Date(year, month, day);
+    if (date.getFullYear() !== year || date.getMonth() !== month || date.getDate() !== day) {
+      return null;
+    }
+    return date;
+  }
+
+  function todayISO() {
+    var now = new Date();
+    return toISO(now.getFullYear(), now.getMonth(), now.getDate());
+  }
+
+  function ensurePanel() {
+    if (panel) return;
+    panel = document.createElement("div");
+    panel.className = "ds-datepicker";
+    panel.id = "ds-datepicker";
+    panel.hidden = true;
+    panel.setAttribute("role", "dialog");
+    panel.setAttribute("aria-label", "选择日期");
+    panel.innerHTML =
+      '<div class="ds-dp-head">' +
+        '<button type="button" class="ds-dp-nav" data-dp-nav="-1" aria-label="上一月">‹</button>' +
+        '<div class="ds-dp-title"></div>' +
+        '<button type="button" class="ds-dp-nav" data-dp-nav="1" aria-label="下一月">›</button>' +
+      "</div>" +
+      '<div class="ds-dp-week">' + WEEK.map(function (d) { return "<span>" + d + "</span>"; }).join("") + "</div>" +
+      '<div class="ds-dp-grid" role="grid"></div>' +
+      '<div class="ds-dp-foot">' +
+        '<button type="button" data-dp-today>今天</button>' +
+        '<button type="button" data-dp-clear>清除</button>' +
+      "</div>";
+    document.body.appendChild(panel);
+    titleEl = panel.querySelector(".ds-dp-title");
+    grid = panel.querySelector(".ds-dp-grid");
+    panel.addEventListener("mousedown", function (event) {
+      event.preventDefault();
+    });
+    panel.addEventListener("click", function (event) {
+      var nav = event.target.closest("[data-dp-nav]");
+      if (nav) {
+        shiftMonth(Number(nav.getAttribute("data-dp-nav")));
+        return;
+      }
+      if (event.target.closest("[data-dp-today]")) {
+        commit(todayISO());
+        return;
+      }
+      if (event.target.closest("[data-dp-clear]")) {
+        commit("");
+        return;
+      }
+      var dayBtn = event.target.closest("[data-iso]");
+      if (dayBtn && !dayBtn.disabled) commit(dayBtn.getAttribute("data-iso"));
+    });
+  }
+
+  function enhance(input) {
+    if (!input || input.dataset.dsDate === "1") return;
+    input.dataset.dsDate = "1";
+    if (input.type === "date") {
+      var value = input.value;
+      try {
+        input.type = "text";
+      } catch (err) {
+        /* keep native type if the engine refuses */
+      }
+      if (value) input.value = value;
+    }
+    input.setAttribute("inputmode", "numeric");
+    input.setAttribute("autocomplete", "off");
+    input.setAttribute("spellcheck", "false");
+    input.setAttribute("placeholder", input.getAttribute("placeholder") || "YYYY-MM-DD");
+    if (!input.getAttribute("pattern")) input.setAttribute("pattern", "\\d{4}-\\d{2}-\\d{2}");
+    if (!input.classList.contains("num-input")) input.classList.add("num-input");
+    input.setAttribute("aria-haspopup", "dialog");
+  }
+
+  function scan() {
+    document.querySelectorAll('input[type="date"]').forEach(enhance);
+  }
+
+  function render() {
+    if (!grid || !titleEl) return;
+    titleEl.textContent = viewYear + "年" + pad(viewMonth + 1) + "月";
+    var first = new Date(viewYear, viewMonth, 1);
+    var start = first.getDay();
+    var selected = activeInput ? parseISO(activeInput.value) : null;
+    var selectedISO = selected ? toISO(selected.getFullYear(), selected.getMonth(), selected.getDate()) : "";
+    var today = todayISO();
+    var min = activeInput && activeInput.min ? activeInput.min : "";
+    var max = activeInput && activeInput.max ? activeInput.max : "";
+    var html = "";
+    var cursor = new Date(viewYear, viewMonth, 1 - start);
+    for (var i = 0; i < 42; i += 1) {
+      var iso = toISO(cursor.getFullYear(), cursor.getMonth(), cursor.getDate());
+      var other = cursor.getMonth() !== viewMonth;
+      var disabled = (min && iso < min) || (max && iso > max);
+      var cls = "ds-dp-day";
+      if (other) cls += " is-other";
+      if (iso === today) cls += " is-today";
+      if (iso === selectedISO) cls += " is-selected";
+      html +=
+        '<button type="button" class="' + cls + '" data-iso="' + iso + '"' +
+        (disabled ? " disabled" : "") +
+        ' aria-label="' + iso + '"' +
+        (iso === selectedISO ? ' aria-current="date"' : "") +
+        ">" + cursor.getDate() + "</button>";
+      cursor.setDate(cursor.getDate() + 1);
+    }
+    grid.innerHTML = html;
+    position();
+  }
+
+  function viewportBox() {
+    var vv = global.visualViewport;
+    if (vv) {
+      return {
+        left: vv.offsetLeft,
+        top: vv.offsetTop,
+        width: vv.width,
+        height: vv.height,
+      };
+    }
+    return { left: 0, top: 0, width: global.innerWidth, height: global.innerHeight };
+  }
+
+  function position() {
+    if (!panel || panel.hidden || !activeInput) return;
+    var rect = activeInput.getBoundingClientRect();
+    var view = viewportBox();
+    var gap = 6;
+    var width = panel.offsetWidth || 280;
+    var height = panel.offsetHeight || 320;
+    var left = rect.left;
+    var top = rect.bottom + gap;
+    if (top + height > view.top + view.height - 8 && rect.top - gap - height >= view.top + 8) {
+      top = rect.top - gap - height;
+    }
+    if (left + width > view.left + view.width - 8) {
+      left = Math.max(view.left + 8, rect.right - width);
+    }
+    if (left < view.left + 8) left = view.left + 8;
+    if (top < view.top + 8) top = view.top + 8;
+    panel.style.left = Math.round(left) + "px";
+    panel.style.top = Math.round(top) + "px";
+  }
+
+  function openPicker(input) {
+    if (!input || input.disabled) return;
+    enhance(input);
+    ensurePanel();
+    activeInput = input;
+    var parsed = parseISO(input.value) || new Date();
+    viewYear = parsed.getFullYear();
+    viewMonth = parsed.getMonth();
+    panel.hidden = false;
+    render();
+    input.setAttribute("aria-expanded", "true");
+  }
+
+  function closePicker() {
+    if (!panel || panel.hidden) return;
+    panel.hidden = true;
+    if (activeInput) activeInput.setAttribute("aria-expanded", "false");
+    activeInput = null;
+  }
+
+  function shiftMonth(delta) {
+    viewMonth += delta;
+    while (viewMonth < 0) {
+      viewMonth += 12;
+      viewYear -= 1;
+    }
+    while (viewMonth > 11) {
+      viewMonth -= 12;
+      viewYear += 1;
+    }
+    render();
+  }
+
+  function commit(iso) {
+    if (!activeInput) return;
+    var input = activeInput;
+    input.value = iso;
+    input.dispatchEvent(new Event("input", { bubbles: true }));
+    input.dispatchEvent(new Event("change", { bubbles: true }));
+    closePicker();
+    input.focus({ preventScroll: true });
+  }
+
+  function onPointer(event) {
+    var input = event.target.closest && event.target.closest('input[type="date"], input[data-ds-date="1"]');
+    if (input) {
+      if (event.type === "mousedown" && event.button === 0) event.preventDefault();
+      openPicker(input);
+      return;
+    }
+    if (panel && !panel.hidden && !panel.contains(event.target)) closePicker();
+  }
+
+  function onKey(event) {
+    if (event.key === "Escape") {
+      closePicker();
+      return;
+    }
+    var input = event.target.closest && event.target.closest('input[data-ds-date="1"]');
+    if (!input) return;
+    if (event.key === "ArrowDown" || event.key === "Enter" || event.key === " ") {
+      event.preventDefault();
+      openPicker(input);
+    }
+  }
+
+  function bind() {
+    if (bound) return;
+    bound = true;
+    document.addEventListener("mousedown", onPointer, true);
+    document.addEventListener("focusin", function (event) {
+      var input = event.target.closest && event.target.closest('input[type="date"]');
+      if (input) openPicker(input);
+    });
+    document.addEventListener("keydown", onKey);
+    document.addEventListener("scroll", position, true);
+    global.addEventListener("resize", position);
+    if (global.visualViewport) {
+      global.visualViewport.addEventListener("resize", position);
+      global.visualViewport.addEventListener("scroll", position);
+    }
+    if (typeof MutationObserver === "function") {
+      new MutationObserver(scan).observe(document.documentElement, { childList: true, subtree: true });
+    }
+    scan();
+  }
+
+  if (document.readyState === "loading") {
+    document.addEventListener("DOMContentLoaded", bind);
+  } else {
+    bind();
+  }
+
+  global.JinniuDatePicker = { open: openPicker, close: closePicker, scan: scan };
+})(window);
diff --git a/web/design-system.css b/web/design-system.css
index 4651717..8b21497 100644
--- a/web/design-system.css
+++ b/web/design-system.css
@@ -61,6 +61,7 @@
   --lp-brand: linear-gradient(158deg, #c13423, #a02415 52%, #7e170b);
   --lp-brand-glow: radial-gradient(120% 80% at 18% 12%, rgba(255, 255, 255, 0.22), transparent 58%);
   --lp-tick: var(--gold-bright);
+  color-scheme: light;
 
   --fg: var(--text);
   --muted: var(--text-2);
@@ -134,6 +135,9 @@ html[data-theme="night"],
   --lp-brand: linear-gradient(158deg, #201b14, #161310 52%, #0f0d0a);
   --lp-brand-glow: radial-gradient(120% 80% at 18% 12%, rgba(217, 180, 92, 0.18), transparent 58%);
   --lp-tick: var(--gold);
+  color-scheme: dark;
+  scrollbar-color: var(--gold) var(--surface-2);
+  scrollbar-width: thin;
 }
 
 /* ─── reset ─────────────────────────────────────────────────────── */
@@ -225,7 +229,7 @@ html[data-theme="night"] .brand-logo-night { display: block; }
 }
 .side-role.company { background: var(--info-soft); color: var(--info); }
 
-.side-nav { flex: 1; overflow-y: auto; overscroll-behavior: contain; padding: 12px 10px; }
+.side-nav { flex: 1; overflow-x: hidden; overflow-y: auto; overscroll-behavior: contain; padding: 12px 10px; }
 .side-nav .nav-group { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.08em; color: var(--muted); padding: 14px 10px 6px; }
 .side-nav a {
   display: flex; align-items: center; gap: 10px;
@@ -316,6 +320,7 @@ html[data-theme="night"] .brand-logo-night { display: block; }
   min-width: 0;
   min-height: 0;
   height: 100vh;
+  overflow-x: hidden;
   overflow-y: auto;
   overscroll-behavior: contain;
   display: flex;
@@ -478,7 +483,8 @@ html[data-theme="night"] .brand-logo-night { display: block; }
 .dash-company-list {
   flex: 1;
   min-height: 0;
-  overflow: auto;
+  overflow-x: hidden;
+  overflow-y: auto;
 }
 .dash-company-loading,
 .dash-company-empty {
@@ -606,7 +612,8 @@ html[data-theme="night"] .brand-logo-night { display: block; }
   border-radius: 0;
   flex: 1;
   min-height: 0;
-  overflow: auto;
+  overflow-x: auto;
+  overflow-y: auto;
 }
 .dash-detail-empty {
   flex: 1;
@@ -713,7 +720,16 @@ html[data-theme="night"] .brand-logo-night { display: block; }
 }
 
 /* ─── 数据表 ────────────────────────────────────────────────────── */
-.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
+.table-wrap {
+  overflow-x: auto;
+  overflow-y: hidden;
+  border: 1px solid var(--border);
+  border-radius: var(--radius-lg);
+  background: var(--surface);
+}
+.table-wrap.dash-master-scroll {
+  overflow-y: auto;
+}
 .ds-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 640px; }
 .ds-table th, .ds-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
 .ds-table th {
@@ -784,19 +800,71 @@ html[data-theme="night"] .brand-logo-night { display: block; }
   font: inherit;
   font-size: 13.5px;
   min-height: 34px;
+  color-scheme: inherit;
 }
 .input:focus, .select:focus, .textarea:focus, .field .input:focus, .field .select:focus, .field .textarea:focus {
   outline: none;
   border-color: var(--focus-ring);
   box-shadow: 0 0 0 3px var(--focus-glow);
 }
+.input:disabled, .select:disabled, .textarea:disabled,
+.field .input:disabled, .field .select:disabled, .field .textarea:disabled {
+  color: var(--text-3);
+  background: var(--fill);
+  opacity: 0.72;
+  cursor: not-allowed;
+}
+.select option,
+.select optgroup {
+  background-color: var(--surface);
+  color: var(--text);
+}
+.select option:checked,
+.select option:hover {
+  background-color: var(--accent-soft);
+  color: var(--text);
+}
+.select option:disabled {
+  color: var(--text-3);
+}
 .input.num-input { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
 .textarea { min-height: 84px; resize: vertical; line-height: 1.55; }
 .field .hint { font-size: 11.5px; color: var(--muted); }
 .field .hint.error { color: var(--danger); }
 
+/* 关闭原生日历层，改由 ds-datepicker 锚定在触发器旁 */
+input[type="date"]::-webkit-calendar-picker-indicator {
+  opacity: 0;
+  pointer-events: none;
+  display: none;
+}
+.input[type="date"],
+.field .input[type="date"],
+.input[data-ds-date="1"],
+.field .input[data-ds-date="1"] {
+  padding-right: 34px;
+  background-color: var(--fill);
+  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%236e6e73' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2.5' y='3.5' width='11' height='10' rx='1.5'/%3E%3Cpath d='M2.5 6.5h11M6 2v3M10 2v3'/%3E%3C/svg%3E");
+  background-repeat: no-repeat;
+  background-position: right 10px center;
+  background-size: 16px 16px;
+}
+html[data-theme="night"] .input[type="date"],
+html[data-theme="night"] .field .input[type="date"],
+html[data-theme="night"] .input[data-ds-date="1"],
+html[data-theme="night"] .field .input[data-ds-date="1"] {
+  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23d9b45c' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2.5' y='3.5' width='11' height='10' rx='1.5'/%3E%3Cpath d='M2.5 6.5h11M6 2v3M10 2v3'/%3E%3C/svg%3E");
+}
+
 /* ─── Tabs ──────────────────────────────────────────────────────── */
-.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 16px; overflow-x: auto; }
+.tabs {
+  display: flex;
+  gap: 2px;
+  border-bottom: 1px solid var(--border);
+  margin-bottom: 16px;
+  overflow-x: auto;
+  overflow-y: hidden;
+}
 .tabs button {
   background: none; border: 0;
   padding: 9px 14px;
@@ -867,7 +935,7 @@ html[data-theme="night"] .brand-logo-night { display: block; }
   border-radius: 16px;
   border: 1px solid var(--gold-line);
   width: 100%; max-width: min(520px, 94vw);
-  max-height: 86vh; overflow-y: auto;
+  max-height: 86vh; overflow-x: hidden; overflow-y: auto;
   padding: 22px 24px;
   box-shadow: var(--shadow-modal);
 }
@@ -1190,6 +1258,7 @@ a.flow-step.doing:hover { background: color-mix(in oklch, var(--warn) 16%, trans
     display: flex;
     flex-direction: row;
     overflow-x: auto;
+    overflow-y: hidden;
     padding: 8px 4px;
     flex: 1;
   }
@@ -1207,7 +1276,7 @@ a.flow-step.doing:hover { background: color-mix(in oklch, var(--warn) 16%, trans
   .theme-seg { margin-bottom: 0; width: 92px; grid-template-columns: 1fr 1fr; }
   .account-box { padding: 4px; background: transparent; }
   .side-foot .user-name, .side-foot .user-meta, .side-foot .avatar { display: none; }
-  .main { min-height: 0; height: 100%; overflow-y: auto; }
+  .main { min-height: 0; height: 100%; overflow-x: hidden; overflow-y: auto; }
 }
 
 /* ─── Toast 轻量提示 ───────────────────────────────────────────── */
@@ -1265,7 +1334,7 @@ a.flow-step.doing:hover { background: color-mix(in oklch, var(--warn) 16%, trans
 }
 .drawer-head .d-title { font-size: 16px; font-weight: 700; margin-top: 6px; }
 .drawer-head .d-desc { color: var(--muted); font-size: 12.5px; margin-top: 4px; }
-.drawer-body { flex: 1; overflow-y: auto; padding: 16px 20px; }
+.drawer-body { flex: 1; overflow-x: hidden; overflow-y: auto; padding: 16px 20px; }
 .drawer-body .kv { grid-template-columns: auto 1fr; gap: 8px 18px; }
 .drawer-body .kv dt { color: var(--muted); white-space: nowrap; }
 .drawer-body .kv dd { text-align: right; word-break: break-all; }
@@ -1429,7 +1498,7 @@ body[data-portal="company"] .side-nav a[data-view="transfers"].active svg {
   background-position: center;
 }
 .batch-bar { display: flex; align-items: center; gap: 10px; padding: 8px 0; }
-.login-page { min-height: 100vh; overflow: auto; }
+.login-page { min-height: 100vh; overflow-x: hidden; overflow-y: auto; }
 .toast .t-detail { color: rgba(255,255,255,.72); }
 .toast .t-dot { margin-top: 0; }
 
@@ -1675,3 +1744,171 @@ body[data-portal="company"] .side-nav a[data-view="transfers"].active svg {
   .audit-event-cards { display: grid; gap: 10px; }
 }
 
+/* ─── 夜间滚动条：金色滑块 + 深色轨道（HEL-351） ─────────────── */
+html[data-theme="night"] ::-webkit-scrollbar {
+  width: 10px;
+  height: 10px;
+}
+html[data-theme="night"] ::-webkit-scrollbar-track {
+  background: var(--surface-2);
+}
+html[data-theme="night"] ::-webkit-scrollbar-thumb {
+  background-color: var(--gold);
+  border: 2px solid var(--surface-2);
+  border-radius: 999px;
+  background-clip: padding-box;
+}
+html[data-theme="night"] ::-webkit-scrollbar-thumb:hover {
+  background-color: var(--gold-bright);
+}
+html[data-theme="night"] ::-webkit-scrollbar-corner {
+  background: var(--surface);
+}
+
+/* ─── 日期选择弹层：锚定触发器，夜间黑金点缀 ───────────────── */
+.ds-datepicker {
+  position: fixed;
+  z-index: var(--z-tooltip);
+  width: 280px;
+  padding: 12px;
+  background: var(--material-drawer);
+  backdrop-filter: blur(28px);
+  -webkit-backdrop-filter: blur(28px);
+  border: 1px solid var(--hairline);
+  border-radius: 16px;
+  box-shadow: var(--shadow-modal);
+  color: var(--text);
+}
+html[data-theme="night"] .ds-datepicker {
+  background: var(--surface);
+  border-color: var(--gold-line);
+}
+.ds-datepicker[hidden] { display: none !important; }
+.ds-dp-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+  margin-bottom: 10px;
+}
+.ds-dp-title {
+  font-size: 13.5px;
+  font-weight: 650;
+  font-variant-numeric: tabular-nums;
+}
+html[data-theme="night"] .ds-dp-title { color: var(--gold); }
+.ds-dp-nav {
+  width: 28px;
+  height: 28px;
+  border: 0;
+  border-radius: 7px;
+  background: var(--fill);
+  color: var(--text-2);
+}
+.ds-dp-nav:hover { background: var(--hover); color: var(--text); }
+.ds-dp-week,
+.ds-dp-grid {
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  gap: 2px;
+}
+.ds-dp-week span {
+  height: 28px;
+  display: grid;
+  place-items: center;
+  font-size: 11px;
+  font-weight: 600;
+  color: var(--text-3);
+}
+.ds-dp-day {
+  height: 32px;
+  border: 0;
+  border-radius: 8px;
+  background: transparent;
+  color: var(--text);
+  font-size: 13px;
+  font-variant-numeric: tabular-nums;
+  font-family: var(--font-mono);
+}
+.ds-dp-day:hover { background: var(--hover); }
+.ds-dp-day.is-other { color: var(--text-3); }
+.ds-dp-day.is-today {
+  box-shadow: inset 0 0 0 1px var(--accent);
+  color: var(--accent);
+}
+.ds-dp-day.is-selected {
+  background: var(--accent-soft);
+  color: var(--accent);
+  font-weight: 700;
+}
+.ds-dp-day.is-selected.is-today { box-shadow: none; }
+html[data-theme="night"] .ds-dp-day.is-today {
+  box-shadow: inset 0 0 0 1px var(--gold-line);
+  color: var(--gold);
+}
+html[data-theme="night"] .ds-dp-day.is-selected {
+  background: var(--gold-soft);
+  color: var(--gold);
+}
+.ds-dp-day:disabled {
+  color: var(--text-3);
+  opacity: 0.45;
+  cursor: not-allowed;
+}
+.ds-dp-foot {
+  display: flex;
+  justify-content: space-between;
+  margin-top: 8px;
+  padding-top: 8px;
+  border-top: 1px solid var(--hairline);
+}
+.ds-dp-foot button {
+  height: 26px;
+  padding: 0 10px;
+  border: 0;
+  border-radius: 7px;
+  background: transparent;
+  color: var(--text-2);
+  font-size: 12px;
+  font-weight: 600;
+}
+.ds-dp-foot button:hover { background: var(--hover); color: var(--text); }
+
+/* ─── 一次性初始密码领取 ─────────────────────────────────────── */
+.cred-box {
+  display: grid;
+  gap: 10px;
+  padding: 12px 14px;
+  border: 1px solid var(--gold-line);
+  border-radius: 14px;
+  background: var(--gold-soft);
+}
+.cred-row {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  min-width: 0;
+}
+.cred-row .cred-label {
+  flex: none;
+  width: 72px;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--text-2);
+}
+.cred-row .cred-value {
+  flex: 1;
+  min-width: 0;
+  font-family: var(--font-mono);
+  font-variant-numeric: tabular-nums;
+  font-size: 14px;
+  font-weight: 650;
+  color: var(--text);
+  word-break: break-all;
+}
+.cred-warn {
+  margin-top: 12px;
+  font-size: 12.5px;
+  color: var(--text-2);
+}
+
diff --git a/web/index.html b/web/index.html
index bc3b1f4..c6a2104 100644
--- a/web/index.html
+++ b/web/index.html
@@ -10,7 +10,7 @@
       document.documentElement.classList.add("v-fusion");
     })();
   </script>
-  <link rel="stylesheet" href="design-system.css?v=12" />
+  <link rel="stylesheet" href="design-system.css?v=13" />
 </head>
 <body class="login-page">
   <div class="portal-wrap">
diff --git a/web/login-admin.html b/web/login-admin.html
index 799aa24..d188902 100644
--- a/web/login-admin.html
+++ b/web/login-admin.html
@@ -10,7 +10,7 @@
       document.documentElement.classList.add("v-fusion");
     })();
   </script>
-  <link rel="stylesheet" href="design-system.css?v=12" />
+  <link rel="stylesheet" href="design-system.css?v=13" />
 </head>
 <body class="login-page" data-role="admin">
   <div class="login-wrap">
diff --git a/web/login-company.html b/web/login-company.html
index 5271a6c..524481b 100644
--- a/web/login-company.html
+++ b/web/login-company.html
@@ -10,7 +10,7 @@
       document.documentElement.classList.add("v-fusion");
     })();
   </script>
-  <link rel="stylesheet" href="design-system.css?v=12" />
+  <link rel="stylesheet" href="design-system.css?v=13" />
 </head>
 <body class="login-page" data-role="company">
   <div class="login-wrap">