diff --git a/templates/login.html b/templates/login.html
new file mode 100644
index 0000000..6ea46dc
--- /dev/null
+++ b/templates/login.html
@@ -0,0 +1,156 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>登录 - ParamHub 后台管理</title>
+    <style>
+        * { margin: 0; padding: 0; box-sizing: border-box; }
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
+            min-height: 100vh;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+        }
+        .login-box {
+            background: rgba(255,255,255,0.05);
+            backdrop-filter: blur(20px);
+            border: 1px solid rgba(255,255,255,0.1);
+            border-radius: 20px;
+            padding: 48px 40px;
+            width: 400px;
+            max-width: 90vw;
+            box-shadow: 0 25px 60px rgba(0,0,0,0.4);
+        }
+        .login-box h1 {
+            color: #fff;
+            font-size: 28px;
+            text-align: center;
+            margin-bottom: 8px;
+        }
+        .login-box .subtitle {
+            color: rgba(255,255,255,0.5);
+            text-align: center;
+            font-size: 14px;
+            margin-bottom: 36px;
+        }
+        .input-group {
+            margin-bottom: 24px;
+        }
+        .input-group label {
+            color: rgba(255,255,255,0.7);
+            font-size: 13px;
+            display: block;
+            margin-bottom: 8px;
+            font-weight: 500;
+        }
+        .input-group input {
+            width: 100%;
+            padding: 14px 16px;
+            background: rgba(255,255,255,0.08);
+            border: 1px solid rgba(255,255,255,0.15);
+            border-radius: 12px;
+            color: #fff;
+            font-size: 16px;
+            outline: none;
+            transition: all 0.3s;
+        }
+        .input-group input:focus {
+            border-color: #4fc3f7;
+            background: rgba(255,255,255,0.12);
+            box-shadow: 0 0 0 3px rgba(79,195,247,0.15);
+        }
+        .btn {
+            width: 100%;
+            padding: 14px;
+            background: linear-gradient(135deg, #4fc3f7, #29b6f6);
+            border: none;
+            border-radius: 12px;
+            color: #1a1a2e;
+            font-size: 16px;
+            font-weight: 600;
+            cursor: pointer;
+            transition: all 0.3s;
+        }
+        .btn:hover {
+            transform: translateY(-1px);
+            box-shadow: 0 8px 25px rgba(79,195,247,0.3);
+        }
+        .btn:disabled {
+            opacity: 0.6;
+            cursor: not-allowed;
+            transform: none;
+        }
+        .error-msg {
+            color: #ff5252;
+            font-size: 13px;
+            text-align: center;
+            margin-top: 16px;
+            min-height: 20px;
+        }
+        .back-link {
+            display: block;
+            text-align: center;
+            color: rgba(255,255,255,0.4);
+            font-size: 13px;
+            margin-top: 24px;
+            text-decoration: none;
+            transition: color 0.3s;
+        }
+        .back-link:hover { color: rgba(255,255,255,0.7); }
+    </style>
+</head>
+<body>
+    <div class="login-box">
+        <h1>🔐 ParamHub</h1>
+        <p class="subtitle">后台管理登录</p>
+        <form id="loginForm">
+            <div class="input-group">
+                <label for="password">管理员密码</label>
+                <input type="password" id="password" name="password"
+                       placeholder="请输入密码" autocomplete="current-password" autofocus>
+            </div>
+            <button type="submit" class="btn" id="submitBtn">登 录</button>
+            <div class="error-msg" id="errorMsg"></div>
+        </form>
+        <a href="/" class="back-link">← 返回首页</a>
+    </div>
+
+    <script>
+        const form = document.getElementById('loginForm');
+        const btn = document.getElementById('submitBtn');
+        const error = document.getElementById('errorMsg');
+        const pwd = document.getElementById('password');
+
+        form.addEventListener('submit', async (e) => {
+            e.preventDefault();
+            error.textContent = '';
+            btn.disabled = true;
+            btn.textContent = '验证中...';
+
+            try {
+                const res = await fetch('/login', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ password: pwd.value })
+                });
+                const data = await res.json();
+                if (data.success) {
+                    window.location.href = data.redirect || '/admin';
+                } else {
+                    error.textContent = data.error || '登录失败';
+                    pwd.value = '';
+                    pwd.focus();
+                }
+            } catch (err) {
+                error.textContent = '网络错误，请重试';
+            } finally {
+                btn.disabled = false;
+                btn.textContent = '登 录';
+            }
+        });
+    </script>
+</body>
+</html>
