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

        :root {
            --primary: #e60012; /* 主红色 */
            --light-red: #ffebee;
            --gray: #333;
            --light-gray: #f5f5f7;
            --white: #fff;
            --border-radius: 8px;
        }

        body {
            background-color: #fafafa;
            color: var(--gray);
            line-height: 1.6;
            padding-bottom: 80px; /* 为悬浮按钮预留空间 */
        }

        /* 头部 */
        header {
            background: linear-gradient(135deg, #fff 0%, #f9f9fb 100%);
            padding: 20px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: relative;
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
        }

        .logo {
            color: var(--primary);
            font-weight: bold;
            font-size: 1.5em;
            text-decoration: none;
        }

        .online-status {
            display: flex;
            align-items: center;
            font-size: 0.85em;
            color: #666;
        }
        .online-status i {
            color: #00c853;
            margin-right: 5px;
            font-size: 0.9em;
        }

        /* 主 Banner */
        .banner {
            background: url('../img/b1.png') no-repeat center/cover;
		
            padding: 60px 20px;
            text-align: center;
            position: relative;
            overflow: hidden;
			filter: brightness(0.8); 

        }

        .banner::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -50%;
            width: 800px;
            height: 800px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(230,0,18,0.05) 0%, transparent 70%);
            z-index: -1;
        }

        .banner h1 {
            font-size: 2.2em;
            color: var(--gray);
            margin-bottom: 15px;
            font-weight: 700;
        }

        .banner h1 span {
            color: var(--primary);
            font-weight: 800;
        }

        .banner-desc {
            font-size: 0.95em;
            color: #fff;
            max-width: 600px;
            margin: 0 auto 20px;
        }

        .btn {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 12px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1em;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(230, 0, 18, 0.3);
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(230, 0, 18, 0.4);
            background: #cc000f;
        }

        /* 导航图标区 */
        .nav-icons {
            display: flex;
            justify-content: center;
            gap: 50px;
            padding: 30px 0;
            background: var(--white);
            border-bottom: 1px solid #eee;
        }

        .nav-item {
            text-align: center;
            cursor: pointer;
			width:20%;
        }

        .nav-icon {
            font-size: 24px;
            color: #333;
            margin-bottom: 8px;
			color:red
			
        }
        .nav-icon i {
            font-size: 26px;
        }
        .nav-text {
            font-size: 0.85em;
            color: #555;
			
        }

        /* 精选模块 */
        .section-title {
            text-align: center;
            font-size: 1.6em;
            color: var(--gray);
            margin: 40px 0 20px;
            position: relative;
        }
        .section-title span {
            color: var(--primary);
            font-weight: 700;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .models-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            max-width: 800px;
            margin: 20px auto;
			
        }

        .model-card {
		height: 680px;
            background: var(--white);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s, box-shadow 0.3s;

        }

        .model-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.12);
        }

        .model-img {

            height: 500px;
            background: #eee;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
            font-size: 0.9em;
			overflow:hidden
        }
        .model-img::before {
            content: "";
            position: absolute;
        }

        .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: white;
            font-size: 0.75em;
            padding: 3px 8px;
            border-radius: 4px;
        }

        .model-info {
            padding: 20px;
            text-align: center;
        }

        .model-name {
            font-weight: 700;
            font-size: 1.2em;
            margin-bottom: 6px;
        }

        .model-meta {
            font-size: 0.85em;
            color: #777;
            margin-bottom: 12px;
        }

        .model-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 15px;
        }
        .model-tags span {
            background: #f0f0f5;
            color: #666;
            font-size: 0.7em;
            padding: 2px 6px;
            border-radius: 3px;
        }

        .btn-outline {
            width: 100%;
            padding: 10px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .btn-outline:hover {
            background: #cc000f;
        }

        /* 好评墙 */
        .reviews-section {
            padding: 40px 0;
            background: var(--white);
        }

        .reviews-title {
            text-align: center;
            font-size: 1.6em;
            margin-bottom: 5px;
        }
        .reviews-title span {
            color: var(--primary);
            font-weight: 700;
        }
        .reviews-subtitle {
            text-align: center;
            color: #999;
            font-size: 0.9em;
            margin-bottom: 25px;
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            max-width: 800px;
            margin: 0 auto;
        }

        .review-card {
            background: var(--light-gray);
            border-radius: var(--border-radius);
            padding: 20px;
            position: relative;
        }

        .review-header {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }

        .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #ddd;
            margin-right: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
            font-weight: bold;
        }

        .reviewer-info {
            flex: 1;
        }

        .reviewer-name {
            font-weight: 600;
            font-size: 1em;
        }
        .reviewer-role {
            font-size: 0.8em;
            color: #777;
        }

        .stars {
            color: #ffc107;
            font-size: 0.9em;
        }

        .review-time {
            font-size: 0.75em;
            color: #aaa;
            text-align: right;
        }

        .review-content {
            line-height: 1.5;
            color: #444;
            font-size: 0.95em;
        }

        /* 页脚 */
        footer {
            background: var(--light-red);
            padding: 40px 20px 20px;
            margin-top: 50px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-col h3 {
            color: var(--primary);
            margin-bottom: 15px;
            font-size: 1em;
            font-weight: 600;
        }

        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #555;
            text-decoration: none;
            font-size: 0.9em;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: var(--primary);
        }

        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid #eee;
            font-size: 0.85em;
            color: #777;
        }

        /* 悬浮按钮 */
        .floating-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 60px;
            height: 60px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4em;
            box-shadow: 0 6px 15px rgba(230, 0, 18, 0.4);
            cursor: pointer;
            z-index: 9999;
            transition: all 0.3s ease;
        }

        .floating-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 20px rgba(230, 0, 18, 0.6);
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                gap: 15px;
            }

            .banner {
                padding: 40px 15px;
            }
            .banner h1 {
                font-size: 1.8em;
            }

            .nav-icons {
                gap: 25px;
                padding: 20px 0;
            }

            .models-grid,
            .reviews-grid {
                grid-template-columns: 1fr;
            }

            .model-img {
                height: 580px;

            }

        .model-card {
				height: 780px;
   

        }

            .floating-btn {
                width: 50px;
                height: 50px;
                bottom: 20px;
                right: 20px;
                font-size: 1.2em;
            }
        }

        @media (max-width: 480px) {
            .section-title {
                font-size: 1.4em;
            }
            .btn {
                padding: 10px 24px;
                font-size: 0.9em;
            }
        }


		.fixed_bottom{position:fixed;bottom:0px;width:100%;background:#fff;box-sizing:border-box;padding:10px 0px;border-top:1px solid #ddd;}
        .contact-bar {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            /* 适配小屏：改为垂直排列 */
            flex-wrap: wrap;
            position: relative;
        }

        /* 左侧图标组 */
        .contact-icons {
            display: flex;
            gap: 16px;
            flex-shrink: 0;
        }

        .icon-btn {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: white;
            text-decoration: none;
            transition: transform 0.2s, filter 0.2s;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }

        .icon-btn:hover {
            transform: translateY(-3px);
            filter: brightness(1.1);
        }

        .wechat { background: #07c160; } /* 微信绿 */
        .qq { background: #12b7f5; }     /* QQ蓝 */
        .whatsapp { background: #25d366; } /* WhatsApp绿 */
        .telegram { background: #0088cc; } /* Telegram蓝 */

        /* 右侧主按钮 */
        .main-btn {
            flex: 1;
            min-width: 200px;
            max-width: 500px;
            height: 52px;
            background: #e60012; /* 主红 */
            color: white;
            border: none;
            border-radius: 26px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            box-shadow: 0 6px 15px rgba(230, 0, 18, 0.3);
        }

        .main-btn:hover {
            background: #cc000f;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(230, 0, 18, 0.4);
        }

        /* 响应式：小屏下图标与按钮垂直排列 */
        @media (max-width: 768px) {
            .contact-bar {
                flex-direction: column;
                align-items: stretch;
            }

            .contact-icons {
                justify-content: center;
                width: 100%;
            }

            .main-btn {
                width: 100%;
                max-width: none;
				height:60px;
				line-height:60px;
            }
        }

        /* 更小屏幕（如手机竖屏）优化间距 */
        @media (max-width: 480px) {
            .contact-icons {
                gap: 12px;
            }
            .icon-btn {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
            .main-btn {
                height: 48px;
                font-size: 15px;
            }
        }


      /* --- 弹窗样式 --- */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
            z-index: 2000;
            justify-content: center;
            align-items: center;
            animation: fadeIn 0.3s ease;
        }

        .modal-box {
            background: #fff;
            width: 90%;
            max-width: 320px;
            padding: 2.5rem 2rem;
            text-align: center;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
            animation: scaleUp 0.3s ease;
            border-radius: 12px;
        }

        .modal-box h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            font-weight: 700;
            color: #333;
        }

        .modal-box p {
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }

        .contact-options {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .btn-option {
            padding: 12px;
            border: 1px solid #ffe6ea;
            background: #fff5f7;
            font-size: 1rem;
            color: #333;
            cursor: pointer;
            border-radius: 8px;
            transition: 0.2s;
            font-weight: 600;
        }

        .btn-option:hover {
            border-color: #ff3366;
            background: #fff;
            color: #ff3366;
        }

        .btn-option.tg-btn {
            background: #0088cc;
            color: #fff;
            border-color: #0088cc;
        }

        .btn-option.tg-btn:hover {
            background: #0077b5;
        }

        .result-box {
            margin: 20px 0;
            padding: 15px;
            background: #f9f9f9;
            border-radius: 8px;
            border: 1px dashed #ddd;
        }

        .result-number {
            font-size: 1.5rem;
            font-weight: bold;
            color: #ff3366;
            word-break: break-all;
        }

        .btn-close-link {
            margin-top: 15px;
            border: none;
            background: none;
            text-decoration: underline;
            color: #999;
            font-size: 0.85rem;
            cursor: pointer;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
            }

            to {
                opacity: 1;
            }
        }

        @keyframes scaleUp {
            from {
                transform: scale(0.95);
                opacity: 0;
            }

            to {
                transform: scale(1);
                opacity: 1;
            }
        }