:root{--primary-color: #165DFF;--primary-light: #4080FF;--primary-dark: #0E42D2;--secondary-color: #7CB305;--text-color: #333333;--text-secondary: #666666;--text-light: #999999;--bg-color: #F5F7FA;--white: #FFFFFF;--border-color: #EEEEEE;--shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);--shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);--shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--transition: all 0.3s ease;}
/* ȫ����ʽ����*/ *{margin: 0;padding: 0;box-sizing: border-box;}
body{font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;line-height: 1.6;color: var(--text-color);background-color: var(--bg-color);-webkit-font-smoothing: antialiased;}
/* ͨ�����*/.container{max-width: 1200px;margin: 0 auto;padding: 0 20px;}
a{text-decoration: none;color: var(--primary-color);transition: var(--transition);}
a:hover{color: var(--primary-dark);}
ul, ol{list-style: none;}
.btn{display: inline-block;padding: 12px 60px;border-radius: var(--radius-md);font-size: 16px;font-weight: 500;text-align: center;cursor: pointer;transition: var(--transition);border: none;outline: none;}
.btn-primary{background-color: var(--primary-color);color: var(--white);}
.btn-primary:hover{background-color: var(--primary-dark);transform: translateY(-2px);box-shadow: var(--shadow-md);color: var(--white);}
.btn-outline{background-color: transparent;border: 1px solid #fff;color:#fff;}
.btn-outline:hover{background-color: var(--primary-color);color: var(--white);}
/* ������*/header{position: fixed;top: 0;left: 0;right: 0;background-color: rgba(255, 255, 255, 0.95);backdrop-filter: blur(10px);-webkit-backdrop-filter: blur(10px);z-index: 1000;box-shadow: var(--shadow-sm);transition: var(--transition);}
.header-container{display: flex;justify-content: space-between;align-items: center;padding: 16px 0;}
.logo{display: flex;align-items: center;}
.logo img{width: 40px;height: 40px;margin-right: 12px;}
.logo-text{font-size: 24px;font-weight: 700;color: var(--primary-color);}
.nav-menu{display: flex;align-items: center;gap: 40px;}
.nav-item{position: relative;list-style-type: none}
.nav-link{display: block;font-size: 16px;font-weight: 500;color: var(--text-color);padding: 8px 0;transition: var(--transition);}
.nav-link:hover, .nav-link.active{color: var(--primary-color);}
.nav-link.active::after{content: '';position: absolute;bottom: 0;left: 0;width: 100%;height: 2px;background-color: var(--primary-color);border-radius: 1px;}
.nav-buttons{display: flex;align-items: center;gap: 16px;}
.mobile-menu-btn{display: none;background: none;border: none;font-size: 24px;color: var(--text-color);cursor: pointer;}
/* Ӣ������*/
.hero-container{display: flex;align-items: center;gap: 60px;}
.hero-content{flex: 1;max-width: 600px;}
.hero-title{font-size: 48px;line-height: 1.2;margin-bottom: 24px;font-weight: 700;color:#fff;}
.hero-title span{color:#fff}
.hero-desc{font-size: 18px;line-height: 1.6;margin-bottom: 32px;color:#fff;}
.hero-actions{display: flex;gap: 20px;}
.hero-image{flex: 1;display: flex;justify-content: center;}
.hero-image img{max-width: 100%;height: auto;}
/* ��������*/.features{padding: 100px 0;background-color: var(--bg-color);}
.section-header{text-align: center;margin-bottom: 60px;}
.section-title{font-size: 36px;margin-bottom: 20px;color: var(--text-color);position: relative;display: inline-block;}
.section-title::after{content: '';position: absolute;bottom: -10px;left: 50%;transform: translateX(-50%);width: 80px;height: 3px;background-color: var(--primary-color);border-radius: 2px;}
.section-desc{font-size: 16px;color: var(--text-secondary);max-width: 700px;margin: 0 auto;}
.features-grid{display: grid;grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));gap: 30px;margin-top: 60px;}
.feature-card{background-color: var(--white);border-radius: var(--radius-lg);padding: 32px;box-shadow: var(--shadow-sm);transition: var(--transition);border: 1px solid var(--border-color);}
.feature-card:hover{transform: translateY(-5px);box-shadow: var(--shadow-md);border-color: var(--primary-color);}
.feature-icon{width: 64px;height: 64px;background-color: rgba(22, 93, 255, 0.1);border-radius: 50%;display: flex;align-items: center;justify-content: center;margin-bottom: 24px;font-size: 28px;color: var(--primary-color);}
.feature-title{font-size: 20px;font-weight: 600;margin-bottom: 16px;color: var(--text-color);}
.feature-desc{font-size: 16px;line-height: 1.6;color: var(--text-secondary);}
/* ��ȫ����*/.security{padding: 100px 0;background-color: var(--white);}
.ffg-container{display: flex;align-items: center;gap: 80px;}
.ffg-image{flex: 1;}
.ffg-image img{max-width: 100%;height: auto;border-radius: var(--radius-lg);box-shadow: var(--shadow-md);}
.ffg-content{flex: 1;}
.ffg-title{font-size: 32px;margin-bottom: 24px;color: var(--text-color);}
.ffg-desc{font-size: 16px;line-height: 1.8;margin-bottom: 32px;color: var(--text-secondary);}
.ffg-list{display: grid;grid-template-columns: 1fr;gap: 20px;}
.ffg-item{display: flex;align-items: flex-start;gap: 16px;}
.ffg-item-icon{width: 40px;height: 40px;background-color: rgba(22, 93, 255, 0.1);border-radius: 50%;display: flex;align-items: center;justify-content: center;flex-shrink: 0;font-size: 20px;color: var(--primary-color);margin-top: 4px;}
.ffg-item-content h4{font-size: 18px;font-weight: 600;margin-bottom: 8px;color: var(--text-color);}
.ffg-item-content p{font-size: 15px;color: var(--text-secondary);line-height: 1.6;}
/* ��������*/.download{padding: 100px 0;background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);color: var(--white);text-align: center;}
.download-title{font-size: 36px;margin-bottom: 24px;}
.download-desc{font-size: 18px;max-width: 700px;margin: 0 auto 48px;line-height: 1.6;opacity: 0.9;}
.download-buttons{display: flex;justify-content: center;gap: 24px;flex-wrap: wrap;}
.download-btn{display: flex;align-items: center;gap: 12px;background-color: var(--white);color: var(--primary-color);padding: 16px 32px;border-radius: var(--radius-md);font-size: 16px;font-weight: 600;transition: var(--transition);}
.download-btn:hover{transform: translateY(-3px);box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);}
.download-btn i{font-size: 24px;}
/* �ͻ�����*/.testimonials{padding: 100px 0;background-color: var(--bg-color);}
.testimonials-grid{display: grid;grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));gap: 30px;margin-top: 60px;}
.ttx-card{background-color: var(--white);border-radius: var(--radius-lg);padding: 32px;box-shadow: var(--shadow-sm);transition: var(--transition);border: 1px solid var(--border-color);}
.ttx-card:hover{transform: translateY(-5px);box-shadow: var(--shadow-md);}
.ttx-rating{margin-bottom: 16px;color: #FFB547;}
.ttx-rating i{margin-right: 4px;}
.ttx-content{font-size: 16px;line-height: 1.6;margin-bottom: 24px;color: var(--text-secondary);}
.ttx-author{display: flex;align-items: center;gap: 16px;}
.ttx-avatar{width: 60px;height: 60px;border-radius: 50%;overflow: hidden;border: 3px solid var(--primary-color);}
.ttx-avatar img{width: 100%;height: 100%;object-fit: cover;}
.ttx-info h4{font-size: 18px;font-weight: 600;margin-bottom: 4px;color: var(--text-color);}
.ttx-info p{font-size: 14px;color: var(--text-light);}
/* ��������*/.faq{padding: 100px 0;background-color: var(--white);}
.faq-container{max-width: 900px;margin: 0 auto;}
.faq-list{margin-top: 60px;}
.faq-item{margin-bottom: 16px;border-radius: var(--radius-md);border: 1px solid var(--border-color);overflow: hidden;}
.faq-question{display: flex;justify-content: space-between;align-items: center;padding: 20px 24px;background-color: var(--white);cursor: pointer;transition: var(--transition);font-size: 16px;font-weight: 600;color: var(--text-color);}
.faq-question:hover{background-color: rgba(22, 93, 255, 0.05);}
.faq-question i{transition: var(--transition);color: var(--primary-color);}
.faq-item.active .faq-question i{transform: rotate(180deg);}
.faq-answer{max-height: 0;overflow: hidden;transition: max-height 0.3s ease;background-color: var(--white);}
.faq-answer-inner{padding: 0 24px 24px;font-size: 15px;line-height: 1.6;color: var(--text-secondary);}
.faq-item.active .faq-answer{max-height: 500px;}
/* ҳ��*/footer{background-color: #0F172A;color: var(--white);padding: 50px 0 20px;}
.footer-content{display: grid;grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));gap: 40px;margin-bottom: 60px;}
.footer-logo{display: flex;align-items: center;margin-bottom: 24px;}
.footer-logo img{width: 40px;height: 40px;margin-right: 12px;}
.footer-logo-text{font-size: 24px;font-weight: 700;color: var(--white);}
.footer-desc{font-size: 16px;line-height: 1.6;color: rgba(255, 255, 255, 0.7);margin-bottom: 24px;}
.social-links{display: flex;gap: 16px;}
.social-link{display: flex;align-items: center;justify-content: center;width: 40px;height: 40px;background-color: rgba(255, 255, 255, 0.1);border-radius: 50%;color: var(--white);transition: var(--transition);}
.social-link:hover{background-color: var(--primary-color);transform: translateY(-3px);}
.footer-title{font-size: 18px;font-weight: 600;margin-bottom: 24px;color: var(--white);position: relative;padding-bottom: 12px;}
.footer-title::after{content: '';position: absolute;bottom: 0;left: 0;width: 40px;height: 2px;background-color: var(--primary-color);border-radius: 1px;}
.footer-links li{margin-bottom: 0px;}
.footer-links a{display: flex;align-items: center;gap: 8px;font-size: 15px;color: rgba(255, 255, 255, 0.7);transition: var(--transition);}
.footer-links a:hover{color: var(--white);padding-left: 8px;}
.contact-info li{display: flex;align-items: center;gap: 12px;margin-bottom: 16px;color: rgba(255, 255, 255, 0.7);}
.contact-info i{font-size: 18px;color: var(--primary-color);}
.copyright{text-align: center;padding-top: 40px;border-top: 1px solid rgba(255, 255, 255, 0.1);color: rgba(255, 255, 255, 0.5);font-size: 14px;}
.copyright-links{display: flex;justify-content: center;gap: 20px;margin-bottom: 16px;}
.copyright-links a{color: rgba(255, 255, 255, 0.5);font-size: 14px;}
.copyright-links a:hover{color: var(--white);}
/* ��Ӧʽ���*/@media (max-width: 1200px){.hero-container, .ffg-container{gap: 40px;}
.hero-title{font-size: 42px;}
.ffg-title{font-size: 28px;}} @media (max-width: 992px){.nav-menu{display: none;position: absolute;top: 100%;left: 0;right: 0;background-color: var(--white);flex-direction: column;padding: 20px 0;box-shadow: var(--shadow-md);gap: 0;}
.nav-menu.active{display: flex;}
.nav-item{width: 100%;}
.nav-link{padding: 12px 20px;}
.nav-buttons{display: none;}
.mobile-menu-btn{display: block;}
.hero-container, .ffg-container{flex-direction: column;text-align: center;}
.hero-content, .ffg-content{order: 2;}
.hero-image, .ffg-image{order: 1;margin-bottom: 40px;}
.hero-actions{justify-content: center;}
.ffg-list{grid-template-columns: 1fr;}} @media (max-width: 768px){.hero{padding: 60px 0;}
.hero-title{font-size: 36px;}
.hero-desc{font-size: 16px;}
.features, .security, .download, .testimonials, .faq{padding: 80px 0;}
.section-title{font-size: 28px;}
.download-title{font-size: 28px;}
.feature-card, .ttx-card{padding: 24px;}
.download-buttons{gap: 16px;}
.download-btn{padding: 12px 24px;font-size: 14px;}
.footer-content{gap: 30px;}
.copyright-links{flex-wrap: wrap;gap: 10px;}} @media (max-width: 576px){.container{padding: 15px 15px;}
.hero{margin-top: 70px;padding: 50px 0;}
.hero-title{font-size: 28px;}
.hero-actions{flex-direction: column;gap: 16px;}
.btn{width: 100%;padding: 12px 20px;}
.features, .security, .download, .testimonials, .faq{padding: 60px 0;}
.section-title{font-size: 24px;}
.section-desc{font-size: 15px;}
.feature-card, .ttx-card{padding: 20px;}
.feature-icon{width: 56px;height: 56px;font-size: 24px;}
.footer{padding: 60px 0 30px;}}