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

        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            width: 100%;
            max-width: 500px;
            overflow: hidden;
        }

        .header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 30px;
            text-align: center;
        }

        .header h1 {
            font-size: 28px;
            margin-bottom: 10px;
        }

        .header p {
            opacity: 0.9;
            font-size: 14px;
        }

        .form-container {
            padding: 30px;
        }

        .step-indicator {
            display: flex;
            justify-content: center;
            margin-bottom: 30px;
        }

        .step {
            display: flex;
            align-items: center;
            color: #ccc;
            font-size: 14px;
        }

        .step.active {
            color: #667eea;
        }

        .step-number {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: #f0f0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            font-weight: bold;
        }

        .step.active .step-number {
            background: #667eea;
            color: white;
        }

        .step-line {
            width: 50px;
            height: 2px;
            background: #f0f0f0;
            margin: 0 15px;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #333;
            font-weight: 500;
        }

        .form-group label span {
            color: #e74c3c;
        }

        .form-group input {
            width: 100%;
            padding: 15px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 16px;
            transition: border-color 0.3s;
        }

        .form-group input:focus {
            outline: none;
            border-color: #667eea;
        }

        .btn {
            width: 100%;
            padding: 15px;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
        }

        .btn-primary:disabled {
            background: #ccc;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        /* 协议弹窗 */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }

        .modal-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .modal {
            background: white;
            border-radius: 15px;
            width: 90%;
            max-width: 500px;
            max-height: 80vh;
            overflow: hidden;
            transform: scale(0.9);
            transition: transform 0.3s;
        }

        .modal-overlay.show .modal {
            transform: scale(1);
        }

        .modal-header {
            padding: 20px;
            background: #f8f9fa;
            border-bottom: 1px solid #eee;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-header h3 {
            color: #333;
            font-size: 18px;
        }

        .close-btn {
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: #999;
        }

        .modal-body {
            padding: 20px;
            max-height: 50vh;
            overflow-y: auto;
        }

        .agreement-content {
            line-height: 1.8;
            color: #555;
            font-size: 14px;
        }

        .agreement-content h4 {
            color: #333;
            margin: 15px 0 10px;
        }

        .agreement-content p {
            margin-bottom: 10px;
            text-indent: 2em;
        }

        .scroll-hint {
            text-align: center;
            padding: 10px;
            color: #999;
            font-size: 12px;
        }

        .scroll-hint::after {
            content: "↓ 请滚动至底部并等待倒计时结束后勾选协议 ↓";
        }

        .modal-footer {
            padding: 20px;
            border-top: 1px solid #eee;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .checkbox-wrapper {
            display: flex;
            align-items: center;
            cursor: pointer;
        }

        .checkbox-wrapper input[type="checkbox"] {
            display: none;
        }

        .checkmark {
            width: 22px;
            height: 22px;
            border: 2px solid #ddd;
            border-radius: 4px;
            margin-right: 10px;
            position: relative;
            transition: all 0.3s;
        }

        .checkbox-wrapper input[type="checkbox"]:checked + .checkmark {
            background: #667eea;
            border-color: #667eea;
        }

        .checkmark::after {
            content: "✓";
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) scale(0);
            color: white;
            font-size: 14px;
            transition: transform 0.3s;
        }

        .checkbox-wrapper input[type="checkbox"]:checked + .checkmark::after {
            transform: translate(-50%, -50%) scale(1);
        }

        .countdown {
            color: #e74c3c;
            font-weight: bold;
            font-size: 14px;
            min-width: 80px;
        }

        .countdown.ready {
            color: #27ae60;
        }

        /* 付款页面 */
        .payment-page {
            display: none;
        }

        .payment-page.show {
            display: block;
        }

        .info-summary {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 20px;
        }

        .info-summary h4 {
            color: #333;
            margin-bottom: 15px;
        }

        .info-row {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px dashed #ddd;
        }

        .info-row:last-child {
            border-bottom: none;
        }

        .price-tag {
            text-align: center;
            padding: 20px;
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            border-radius: 10px;
            color: white;
            margin-bottom: 20px;
        }

        .price-tag .amount {
            font-size: 36px;
            font-weight: bold;
        }

        .payment-methods {
            margin-bottom: 20px;
        }

        .payment-methods h4 {
            margin-bottom: 15px;
            color: #333;
        }

        .payment-option {
            display: flex;
            align-items: center;
            padding: 15px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            margin-bottom: 10px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .payment-option:hover {
            border-color: #667eea;
        }

        .payment-option.selected {
            border-color: #667eea;
            background: #f8f9ff;
        }

        .payment-option input[type="radio"] {
            margin-right: 15px;
        }

        .payment-icon {
            width: 40px;
            height: 40px;
            margin-right: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }

        .success-page {
            display: none;
            text-align: center;
            padding: 40px;
        }

        .success-page.show {
            display: block;
        }

        .success-icon {
            width: 80px;
            height: 80px;
            background: #27ae60;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            animation: bounceIn 0.6s ease;
        }

        .success-icon::after {
            content: "✓";
            color: white;
            font-size: 40px;
        }

        @keyframes bounceIn {
            0% { transform: scale(0); }
            50% { transform: scale(1.2); }
            100% { transform: scale(1); }
        }

        .success-page h2 {
            color: #27ae60;
            margin-bottom: 15px;
        }

        .success-page p {
            color: #666;
            margin-bottom: 10px;
        }

        .order-number {
            background: #f0f0f0;
            padding: 10px 20px;
            border-radius: 20px;
            display: inline-block;
            margin: 15px 0;
            font-family: monospace;
        }

        .hidden {
            display: none !important;
        }

        /* 进度条 */
        .progress-bar {
            height: 4px;
            background: #f0f0f0;
            border-radius: 2px;
            margin-bottom: 20px;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 2px;
            transition: width 0.3s;
        }

        .page-info {
            text-align: center;
            color: #999;
            font-size: 12px;
            margin-bottom: 20px;
        }