:root {
        --background: #009543;           /* 绿色背景保持不变 */
        --primary: #f8fdf9;              /* 极浅的绿色卡片背景 */
        --secondary: #ffffff;            /* 白色表单背景 */
        --accent: #4a9d62;               /* 柔和的绿色强调色 */
        --light: #2d3748;                /* 深灰色文本 */
        --dark: #718096;                /* 中灰色次文本颜色 */
        --success: #48bb78;              /* 柔和的绿色成功状态 */
        --danger: #f56565;               /* 柔和的红色错误状态 */
        --gray: #e2e8f0;                /* 浅灰色边框 */
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    }

    body {
        background-color: var(--background);
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 10px;
        color: var(--light);
    }

    .brand-header {
        text-align: center;
        margin-bottom: 25px;
        padding: 20px;
        width: 100%;
    }

    .brand-name {
        font-size: 36px;
        font-weight: 700;
        color: white;
        letter-spacing: 1px;
        margin-bottom: 10px;
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    }

    .brand-subtitle {
        font-size: 16px;
        color: rgba(255, 255, 255, 0.8);
        font-weight: 300;
    }

    .login-box, .reg-hotspur-box, .reset-box {
        width: 100%;
        max-width: 450px;
        background: var(--primary);
        border-radius: 12px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        overflow: hidden;
        border: 1px solid var(--gray);
    }

    .title-hotspur {
        background: var(--primary);
        color: var(--light);
        padding: 25px 20px;
        text-align: center;
        border-bottom: 1px solid var(--gray);
    }

    .title-hotspur h2 {
        font-size: 22px;
        margin-bottom: 8px;
        font-weight: 600;
        color: var(--accent);
    }

    .title-hotspur p {
        opacity: 0.8;
        font-size: 14px;
        color: var(--dark);
    }

    form {
        padding: 20px;
    }

    .form-hotspur-group {
        margin-bottom: 15px;
    }

    .form-hotspur-group label {
        display: block;
        margin-bottom: 8px;
        font-weight: 500;
        color: var(--light);
        font-size: 14px;
    }

    .form-hotspur-control {
        width: 100%;
        padding: 12px;
        border: 1px solid var(--gray);
        border-radius: 6px;
        font-size: 15px;
        transition: all 0.2s ease;
        background: var(--secondary);
        color: var(--light);
    }

    .form-hotspur-control:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 2px rgba(74, 157, 98, 0.1);
        outline: none;
    }

    .form-hotspur-control::placeholder {
        color: #a0aec0;
    }

    .input-hotspur-group {
        display: flex;
        gap: 10px;
    }

    .input-hotspur-group .form-hotspur-control {
        flex: 1;
    }

    .btn {
        display: inline-block;
        padding: 12px 18px;
        border: none;
        border-radius: 6px;
        font-size: 15px;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.2s ease;
        text-align: center;
    }

    .btn-primary {
        background: var(--accent);
        color: white;
        font-weight: 500;
    }

    .btn-primary:hover {
        background: #3d8a52;
        transform: translateY(-1px);
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .btn-danger {
        background: var(--danger);
        color: white;
    }

    .btn-danger:hover {
        background: #e53e3e;
        transform: translateY(-1px);
    }

    .btn-outline {
        background: transparent;
        border: 1px solid var(--accent);
        color: var(--accent);
    }

    .btn-outline:hover {
        background: rgba(74, 157, 98, 0.05);
    }

    .btn-sm {
        padding: 8px 12px;
        font-size: 13px;
        width: auto;
        min-width: 110px;
    }

    .btn-disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

    .btn-full-width {
        display: block;
        width: 100%;
    }

    .status-message {
        text-align: center;
        padding: 12px;
        border-radius: 6px;
        margin-top: 15px;
        display: none;
        font-size: 14px;
    }

    .status-success {
        background-color: rgba(72, 187, 120, 0.1);
        color: var(--success);
        border: 1px solid var(--success);
    }

    .status-error {
        background-color: rgba(245, 101, 101, 0.1);
        color: var(--danger);
        border: 1px solid var(--danger);
    }

    .reg-hotspur-text {
        margin-top: 15px;
        font-size: 13px;
        color: var(--dark);
        text-align: center;
    }

    .reg-hotspur-text a {
        color: var(--accent);
        text-decoration: none;
        font-weight: 500;
    }

    .reg-hotspur-text a:hover {
        text-decoration: underline;
    }

    .confirmation {
        background-color: rgba(248, 253, 249, 0.8);
        border: 1px solid var(--accent);
        border-radius: 6px;
        padding: 12px;
        margin-bottom: 15px;
        display: none;
    }

    .confirmation p {
        margin-bottom: 12px;
        color: var(--light);
        font-size: 14px;
    }

    .confirmation-buttons {
        display: flex;
        gap: 8px;
    }

    .confirmation-buttons .btn {
        flex: 1;
        padding: 10px;
        font-size: 14px;
    }

    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(8px); }
        to { opacity: 1; transform: translateY(0); }
    }

    @media (max-width: 768px) {
        .input-hotspur-group {
            flex-direction: column;
        }

        .confirmation-buttons {
            flex-direction: column;
        }

        .btn-sm {
            width: 100%;
            margin-top: 8px;
        }

        .brand-name {
            font-size: 26px;
        }

        .title-hotspur h2 {
            font-size: 20px;
        }
    }