/* 基础样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial Rounded MT Bold', 'Hiragino Maru Gothic ProN', 'Yu Gothic', sans-serif;
        }
        
        :root {
            --primary-pink: #ffb6c1;
            --light-pink: #ffe4e9;
            --dark-pink: #ff8da1;
            --primary-blue: #a6e3ff;
            --light-blue: #e0f7ff;
            --accent-yellow: #fff9c4;
            --text-color: #5a5a5a;
        }
        
        body {
            background: linear-gradient(135deg, #fff9fd, #e0f7ff);
            color: var(--text-color);
            line-height: 1.6;
            min-height: 100vh;
            padding: 20px 15px;
        }
        
        .container {
            max-width: 500px;
            margin: 0 auto;
        }
        
        /* 头部样式 */
        header {
            text-align: center;
            margin-bottom: 30px;
            position: relative;
        }
        
        .logo {
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 15px;
        }
        
        .logo-icon {
            width: 60px;
            height: 60px;
            background-color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }
        
        .logo-text {
            font-size: 24px;
            font-weight: bold;
            color: var(--dark-pink);
            text-shadow: 1px 1px 0 white;
        }
        
        .page-title {
            font-size: 22px;
            color: var(--dark-pink);
            margin-bottom: 10px;
        }
        
        .page-subtitle {
            font-size: 16px;
            color: var(--text-color);
            max-width: 300px;
            margin: 0 auto;
        }
        
        /* 表单样式 */
        .refund-form {
            background-color: white;
            border-radius: 25px;
            padding: 25px 20px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            border: 3px solid var(--light-pink);
            margin-bottom: 30px;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: bold;
            color: var(--dark-pink);
            font-size: 16px;
        }
        
        input, select, textarea {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid var(--light-pink);
            border-radius: 15px;
            font-size: 16px;
            transition: all 0.3s;
            background-color: #fff;
        }
        
        input:focus, select:focus, textarea:focus {
            border-color: var(--primary-pink);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 182, 193, 0.3);
        }
        
        .file-upload {
            position: relative;
            display: inline-block;
            width: 100%;
        }
        
        .file-upload-label {
            display: block;
            padding: 12px 15px;
            background-color: var(--light-pink);
            border: 2px dashed var(--primary-pink);
            border-radius: 15px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .file-upload-label:hover {
            background-color: var(--primary-pink);
            color: white;
        }
        
        .file-upload input[type="file"] {
            position: absolute;
            left: 0;
            top: 0;
            opacity: 0;
            width: 100%;
            height: 100%;
            cursor: pointer;
        }
        
        .file-name {
            margin-top: 8px;
            font-size: 14px;
            color: var(--text-color);
            text-align: center;
        }
        
        .submit-btn {
            background: linear-gradient(to right, var(--primary-pink), var(--primary-blue));
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 50px;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            display: block;
            width: 100%;
            margin-top: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        
        .submit-btn:active {
            transform: translateY(-1px);
        }
        
        /* 退款说明 */
        .refund-notice {
            background-color: var(--light-blue);
            border-radius: 20px;
            padding: 20px;
            margin-top: 20px;
            border: 2px dashed var(--primary-blue);
        }
        
        .notice-title {
            font-size: 18px;
            color: var(--dark-pink);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        
        .notice-title i {
            margin-right: 10px;
        }
        
        .notice-content {
            font-size: 14px;
            line-height: 1.5;
        }
        
        /* 装饰元素 */
        .decoration {
            position: absolute;
            z-index: -1;
        }
        
        .bubble {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            position: absolute;
        }
        
        .bubble-1 {
            top: 10%;
            left: 5%;
            animation: float 8s infinite ease-in-out;
        }
        
        .bubble-2 {
            top: 20%;
            right: 5%;
            width: 40px;
            height: 40px;
            animation: float 10s infinite ease-in-out 1s;
        }
        
        .bubble-3 {
            bottom: 15%;
            left: 10%;
            width: 30px;
            height: 30px;
            animation: float 12s infinite ease-in-out 2s;
        }
        
        @keyframes float {
            0%, 100% {
                transform: translateY(0) rotate(0deg);
            }
            50% {
                transform: translateY(-15px) rotate(10deg);
            }
        }
        
        .character {
            position: fixed;
            width: 80px;
            height: 80px;
            bottom: 20px;
            right: 20px;
            z-index: 10;
        }
        
        /* 成功消息 */
        .success-message {
            display: none;
            text-align: center;
            padding: 30px 20px;
            background-color: white;
            border-radius: 25px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            border: 3px solid var(--light-pink);
            margin-top: 20px;
        }
        
        .success-icon {
            font-size: 60px;
            color: var(--primary-pink);
            margin-bottom: 20px;
        }
        
        .success-title {
            font-size: 22px;
            color: var(--dark-pink);
            margin-bottom: 15px;
        }
        
        .success-text {
            font-size: 16px;
            margin-bottom: 20px;
        }
        
        .back-btn {
            background: linear-gradient(to right, var(--primary-blue), var(--primary-pink));
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-block;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        /* 加载动画 */
        .loading {
            display: none;
            text-align: center;
            padding: 20px;
        }
        
        .spinner {
            width: 50px;
            height: 50px;
            border: 5px solid var(--light-pink);
            border-top: 5px solid var(--primary-pink);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 15px;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        /* 错误提示 */
        .error-message {
            color: #ff4d4d;
            font-size: 14px;
            margin-top: 5px;
            display: none;
        }