* { margin: 0; padding: 0; box-sizing: border-box; }

        body {
            font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
            height: 100vh;
            overflow: hidden;
            background: linear-gradient(160deg, #0e2e10 0%, #1b5e20 35%, #2e7d32 65%, #388e3c 100%);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 背景装饰圆 */
        .bg-circle {
            position: fixed;
            border-radius: 50%;
            filter: blur(50px);
            opacity: .25;
            z-index: 0;
        }
        .bg-circle-1 {
            width: 360px; height: 360px;
            background: #66bb6a;
            top: -100px; left: -80px;
            animation: float1 14s ease-in-out infinite;
        }
        .bg-circle-2 {
            width: 300px; height: 300px;
            background: #26a69a;
            bottom: -60px; right: -40px;
            animation: float2 18s ease-in-out infinite;
        }
        .bg-circle-3 {
            width: 200px; height: 200px;
            background: #a5d6a7;
            top: 50%; right: 15%;
            animation: float1 10s ease-in-out infinite reverse;
        }
        @keyframes float1 {
            0%,100% { transform: translate(0,0); }
            50% { transform: translate(20px,-30px); }
        }
        @keyframes float2 {
            0%,100% { transform: translate(0,0); }
            50% { transform: translate(-25px,20px); }
        }

        /* 主内容 */
        .main {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
            padding: 0 20px;
        }

        .main .glyphicon {
            font-size: 56px;
            color: rgba(255,255,255,.9);
            background: rgba(255,255,255,.12);
            width: 100px;
            height: 100px;
            border-radius: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 36px;
            border: 1.5px solid rgba(255,255,255,.15);
            animation: fadeDown .8s ease forwards;
        }

        .main h1 {
            font-size: clamp(26px, 4vw, 44px);
            font-weight: 300;
            line-height: 1.4;
            margin-bottom: 14px;
            letter-spacing: 1px;
            animation: fadeUp .8s ease .15s forwards;
            opacity: 0;
        }

        .main h1 strong {
            font-weight: 700;
            background: linear-gradient(135deg, #a5d6a7, #e8f5e9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .main p {
            font-size: clamp(13px, 1.3vw, 15px);
            color: rgba(255,255,255,.6);
            margin-bottom: 40px;
            animation: fadeUp .8s ease .3s forwards;
            opacity: 0;
            letter-spacing: .5px;
        }

        .btn-enter {
            margin: 5px auto 2px auto;
            display: block;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, #a5d6a7, #66bb6a);
            color: #1a3a1a;
            font-weight: 700;
            font-size: 16px;
            padding: 14px 48px;
            border-radius: 32px;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 24px rgba(102,187,106,.3);
            transition: all .35s;
            animation: fadeUp .8s ease .45s forwards;
            opacity: 0;
            letter-spacing: .5px;
        }
        .btn-enter:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(102,187,106,.45);
            color: #1a3a1a;
        }
        .btn-enter:active { transform: translateY(-1px); }
        .btn-enter .glyphicon {
            font-size: 16px;
            background: none;
            width: auto; height: auto;
            border-radius: 0;
            margin: 0;
            animation: none;
            opacity: 1;
            color: #1a3a1a;
        }

        .copyright {
            position: fixed;
            bottom: 18px;
            left: 0; right: 0;
            text-align: center;
            font-size: 11px;
            color: rgba(255,255,255,.25);
            z-index: 1;
        }

        @keyframes fadeDown {
            from { opacity: 0; transform: translateY(-20px); }
            to   { opacity: 1; transform: translateY(0); }
        }
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(16px); }
            to   { opacity: 1; transform: translateY(0); }
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: "Microsoft YaHei", sans-serif;
            background-color: #f5f7fa;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }
        .container {
            text-align: center;
            background: #fff;
            padding: 50px 80px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }
        .success-icon {
            font-size: 60px;
            color: #28a745;
            margin-bottom: 20px;
        }
        h2 {
            color: #333;
            margin-bottom: 10px;
        }
        p {
            color: #666;
            margin-bottom: 30px;
        }
        .btn {
            display: inline-block;
            padding: 10px 24px;
            background-color: #007bff;
            color: #fff;
            border-radius: 6px;
            text-decoration: none;
            font-size: 14px;
        }
        .btn:hover {
            background-color: #0069d9;
        }

        /* 基础页面重置与背景设置 */
        body {
            margin: 0;
            padding: 0;
            background-color: #f5f5f5; /* 页面浅灰色背景 */
            font-family: "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
        }

        /* 主容器样式 */
        .login-wrapper {
            width: 100%;
            max-width: 400px;
            padding: 15px;
        }

        /* 顶部大标题 */
        .main-title {
            text-align: center;
            font-size: 24px;
            font-weight: bold;
            color: #333;
            margin-bottom: 25px;
        }

        /* 登录卡片面板 */
        .login-panel {
            background-color: #fff;
            padding: 35px 30px;
            border-radius: 6px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
        }

        /* 卡片内小标题及副标题 */
        .panel-header {
            text-align: center;
            margin-bottom: 25px;
        }
        .panel-header h3 {
            margin: 0 0 8px 0;
            font-size: 20px;
            color: #333;
            font-weight: normal;
        }
        /* 使用Bootstrap常用的蓝色，可根据需要调整 */
        .panel-header h3 .glyphicon-user {
            color: #3498db; 
        }
        .panel-header p {
            margin: 0;
            font-size: 13px;
            color: #999;
        }

        /* 表单组间距微调 */
        .form-group {
            margin-bottom: 20px;
        }

        /* 调整输入框前图标（Glyphicon）的垂直对齐 */
        .input-group .input-group-addon {
            background-color: #fff;
            border-right: none;
            color: #999;
            padding: 8px 12px;
        }

        /* 调整输入框左侧边框圆角和边框样式 */
        .form-control {
            border-left: none;
            padding-left: 0;
            height: 36px;
            box-shadow: none;
            -webkit-box-shadow: none;
        }

        /* 模拟密码框前的“锁”图标 */
        .lock-icon::before {
            content: "\e033"; /* Bootstrap 3 中锁图标的Unicode */
            font-family: 'Glyphicons Halflings';
            color: #999;
        }

        /* 覆盖Bootstrap默认输入框组边框合并样式，使左右边框分离 */
        .input-group-addon + .form-control {
            border-left: 1px solid #ccc;
        }
        
        /* 聚焦状态样式优化 */
        .form-control:focus {
            border-color: #ccc;
            box-shadow: none;
        }

        /* 登录按钮样式：高度、字体、颜色（模拟图中的翠绿色） */
        .btn-login {
            background-color: #27ae60;
            border-color: #27ae60;
            color: #fff;
            font-size: 16px;
            height: 44px;
            line-height: 44px;
            padding: 0;
            border-radius: 4px;
            margin-top: 10px;
            transition: background-color 0.2s;
        }
        .btn-login:hover,
        .btn-login:focus {
            background-color: #229954;
            border-color: #229954;
            color: #fff;
        }

        /* 底部版权信息 */
        .footer-text {
            text-align: center;
            margin-top: 25px;
            font-size: 12px;
            color: #999;
        }