/* 主要内容区域 */
        .container {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding-top: 80px;
            padding-bottom: 80px;
            box-sizing: border-box;
        }

        .submit-form-container {
            background-color: rgba(0, 0, 0, 0.3);
            border-radius: 10px;
            padding: 30px;
            width: 80%;
            max-width: 600px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .form-title {
            color: white;
            text-align: center;
            font-size: 24px;
            margin-bottom: 20px;
            font-family: 'SimSun', '宋体', serif;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            color: white;
            margin-bottom: 8px;
            font-size: 16px;
        }

        .form-control {
            width: 100%;
            padding: 10px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 5px;
            background-color: rgba(0, 0, 0, 0.4);
            color: white;
            font-size: 16px;
            box-sizing: border-box;
        }

        /* 为select元素添加样式 */
        select.form-control {
            /* 改变下拉箭头颜色 */
            appearance: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='white' viewBox='0 0 16 16'%3E%3Cpath d='M8 12a1 1 0 0 0 1-1V5.586l2.293 2.293a1 1 0 0 0 1.414-1.414l-4-4a1 1 0 0 0-1.414 0l-4 4a1 1 0 1 0 1.414 1.414L7 5.586V11a1 1 0 0 0 1 1z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            background-size: 12px;
        }

        /* 下拉列表样式 */
        select.form-control option {
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            border: none;
            padding: 10px;
        }
        .form-control:focus {
            outline: none;
            border-color: rgba(255, 255, 255, 0.5);
        }

        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }

        .submit-button {
            width: 100%;
            padding: 12px;
            background-color: rgba(255, 77, 77, 0.8);
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 18px;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .submit-button:hover {
            background-color: rgba(255, 77, 77, 1);
        }

        .form-message {
            text-align: center;
            margin-top: 15px;
            padding: 10px;
            border-radius: 5px;
            display: none;
        }

        .success-message {
            background-color: rgba(0, 200, 83, 0.3);
            color: #00c853;
            border: 1px solid #00c853;
        }

        .error-message {
            background-color: rgba(255, 87, 34, 0.3);
            color: #ff5722;
            border: 1px solid #ff5722;
        }

        /* 投稿须知样式 */
        .submission-guide {
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            padding: 15px;
            margin-bottom: 20px;
            color: white;
        }

        .guide-title {
            font-weight: bold;
            margin-bottom: 10px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .guide-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            font-size: 14px;
            line-height: 1.5;
        }

        .guide-content.active {
            max-height: 500px;
            transition: max-height 0.5s ease-in;
        }

        /* 弹窗样式 */
        .modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(5px);
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            background-color: rgba(0, 0, 0, 0.7);
            border-radius: 10px;
            padding: 25px;
            width: 80%;
            max-width: 500px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            animation: modalFadeIn 0.3s;
        }

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

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            color: white;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 10px;
        }

        .close-modal {
            color: white;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
            transition: color 0.3s;
        }

        .close-modal:hover {
            color: #ff4d4d;
        }

        .modal-body {
            color: white;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .modal-body p {
            margin: 10px 0;
        }

        .modal-footer {
            display: flex;
            justify-content: center;
        }

        .close-button {
            background-color: rgba(255, 77, 77, 0.8);
            color: white;
            border: none;
            border-radius: 5px;
            padding: 10px 20px;
            font-size: 16px;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .close-button:hover {
            background-color: rgba(255, 77, 77, 1);
        }