* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
        }

        :root {
            --primary: #2563EB;
            --primary-light: #3B82F6;
            --primary-dark: #1D4ED8;
            --secondary: #8B5CF6;
            --accent: #06D6A0;
            --light: #FFFFFF;
            --light-gray: #F8FAFC;
            --gray: #64748B;
            --dark-gray: #334155;
            --border: #E2E8F0;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --hover-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }

        body {
            background: var(--light);
            color: var(--dark-gray);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            overflow-x: hidden;
            position: relative;
        }

        
        .filter-btn {
            position: fixed;
            top: 20px;
            right: 20px;
            background: linear-gradient(135deg, var(--secondary), #7C3AED);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 12px 20px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 1000;
        }

        .filter-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
        }

        .container {
            width: 100%;
            max-width: 500px;
        }

        .header {
            text-align: center;
            margin-bottom: 30px;
        }

        .logo {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
            box-shadow: 0 10px 25px rgba(37, 99, 235, 0.2);
        }

        .logo i {
            font-size: 36px;
            color: white;
        }

        .title {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark-gray);
            margin-bottom: 8px;
        }

        .subtitle {
            color: var(--gray);
            font-size: 16px;
        }

        .card {
            background: var(--light);
            border-radius: 20px;
            border: 1px solid var(--border);
            padding: 24px;
            margin-bottom: 20px;
            box-shadow: var(--card-shadow);
            transition: all 0.3s ease;
        }

        .card:hover {
            box-shadow: var(--hover-shadow);
        }

        .card-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--dark-gray);
        }

        .card-title i {
            font-size: 20px;
            color: var(--primary);
        }

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

        .input-label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            color: var(--gray);
            font-weight: 500;
        }

        .input-field {
            width: 100%;
            padding: 14px 16px;
            background: var(--light-gray);
            border: 1px solid var(--border);
            border-radius: 12px;
            color: var(--dark-gray);
            font-size: 16px;
            transition: all 0.3s ease;
            appearance: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 16px center;
            background-size: 16px;
        }

        .input-field:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .button-group {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 20px;
        }

        .btn {
            padding: 14px 20px;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
        }

        .btn-secondary {
            background: var(--light-gray);
            color: var(--dark-gray);
            border: 1px solid var(--border);
        }

        .btn-secondary:hover {
            background: var(--border);
        }

        .btn-tertiary {
            background: linear-gradient(135deg, var(--secondary), #7C3AED);
            color: white;
            box-shadow: 0 4px 15px rgba(139, 92, 246, 0.2);
        }

        .btn-tertiary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(139, 92, 246, 0.3);
        }

        .message {
            padding: 12px 16px;
            border-radius: 12px;
            margin-top: 20px;
            display: none;
            align-items: center;
            gap: 10px;
        }

        .message i {
            font-size: 18px;
        }

        .message.success {
            background: rgba(6, 214, 160, 0.1);
            color: var(--accent);
            border: 1px solid rgba(6, 214, 160, 0.2);
        }

        .message.error {
            background: rgba(239, 68, 68, 0.1);
            color: #EF4444;
            border: 1px solid rgba(239, 68, 68, 0.2);
        }

        .announcement-content p {
            margin: 12px 0;
            padding-left: 20px;
            position: relative;
            color: var(--gray);
            line-height: 1.5;
        }

        .announcement-content p:before {
            content: "•";
            color: var(--primary);
            position: absolute;
            left: 0;
        }

        .footer {
            text-align: center;
            margin-top: 30px;
            color: var(--gray);
            font-size: 14px;
        }

        .loader {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 1s linear infinite;
        }

        .additional-buttons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 15px;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        @media (max-width: 480px) {
            .container {
                max-width: 100%;
            }
            
            .button-group {
                grid-template-columns: 1fr;
            }
            
            .additional-buttons {
                grid-template-columns: 1fr;
            }
            
            .card {
                padding: 20px;
            }
            
            .filter-btn {
                top: 10px;
                right: 10px;
                padding: 10px 16px;
                font-size: 13px;
            }
        }
                /* 全局基础样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: Arial, sans-serif;
            background-color: #f5f5f5;
            padding: 20px;
            min-height: 100vh;
        }
        .container {
            max-width: 400px;
            margin: 0 auto;
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            overflow: hidden;
        }
        .header {
            padding: 20px;
            background: #007bff;
            color: white;
            text-align: center;
        }
        .title {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .subtitle {
            color: rgb(255, 0, 0);
            font-size: 12px;
            opacity: 0.9;
        }
        .card {
            padding: 20px;
        }
        .card-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            color: #333;
            margin-bottom: 20px;
            font-weight: 600;
        }
        .input-group {
            margin-bottom: 16px;
        }
        .input-label {
            display: block;
            font-size: 14px;
            color: #666;
            margin-bottom: 6px;
        }
        .input-field {
            width: 100%;
            padding: 12px 10px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            transition: border-color 0.2s;
        }
        .input-field:focus {
            border-color: #007bff;
        }
        /* 按钮组样式 */
        .button-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 16px;
        }
        .btn {
            width: 100%;
            padding: 12px;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: background-color 0.2s;
        }
        .btn-primary {
            background: #007bff;
            color: white;
        }
        .btn-primary:hover {
            background: #0069d9;
        }
        .btn-secondary {
            background: #6c757d;
            color: white;
        }
        .btn-secondary:hover {
            background: #5a6268;
        }
        /* 消息提示样式 */
        .message {
            display: none;
            align-items: center;
            gap: 8px;
            padding: 10px;
            border-radius: 8px;
            font-size: 14px;
            margin-top: 10px;
        }
        .message.success {
            background: #d4edda;
            color: #155724;
        }
        .message.error {
            background: #f8d7da;
            color: #721c24;
        }
        /* 公告区域 */
        .announcement-content {
            font-size: 13px;
            color: #666;
            line-height: 1.6;
        }
        .announcement-content p {
            margin-bottom: 8px;
            color: rgb(255, 0, 0);
        }
        /* 页脚样式 */
        .footer {
            padding: 15px;
            text-align: center;
            font-size: 12px;
            color: #999;
            border-top: 1px solid #eee;
        }
        /* 加载动画 */
        .loader {
            width: 16px;
            height: 16px;
            border: 2px solid #fff;
            border-bottom-color: transparent;
            border-radius: 50%;
            animation: loader 1s linear infinite;
        }
        @keyframes loader {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }