:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --accent-color: #4cc9f0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --success-color: #4ade80;
    --text-color: #333;
    --text-light: #f8f9fa;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --section-padding: 80px 20px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    overflow-x: hidden;
}
.tishi{position: fixed; top: 30%; left: 30%; width: 40%; text-align: center; padding: 10px; background-color: rgba(0, 0, 0, 0.6);color: #fff;}
.hidden{display: none;}
/* 基本样式 */
a {
    text-decoration: none; /* 去除默认的下划线 */
    color: #007BFF; /* 设置链接的颜色 */
    transition: color 0.3s; /* 添加颜色过渡效果 */
}

/* 鼠标悬停时的样式 */
a:hover {
    color: #0056b3; /* 悬停时改变颜色 */
    text-decoration: underline; /* 悬停时显示下划线 */
}

/* 链接被访问后的样式 */
a:visited {
    color: #007BFF; /* 访问后改变颜色 */
}

/* 链接被点击时的样式 */
a:active {
    color: #0056b3; /* 点击时改变颜色 */
}

/* 链接聚焦时的样式（例如使用Tab键切换到链接） */
a:focus {
    outline: none; /* 去除默认的聚焦轮廓 */
    border: 2px solid #007BFF; /* 添加一个边框作为聚焦指示 */
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    margin-right: 10px;
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

.nav-links a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:hover:after,
.nav-links a.active:after {
    width: 100%;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Hero区域样式 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
}

.hero-content h1 {
    font-size: 2rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #555;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    background: var(--primary-color);
    color: white;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
}

.btn:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(67, 97, 238, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    margin-left: 15px;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.hero-image img {
    max-width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* 特性部分 */
.features {
    padding: var(--section-padding);
    background: white;
}

.section-title {
    text-align: center;
    margin-top: 60px;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.section-title p {
    color: #777;
    max-width: 750px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}
.feature-card a{text-decoration: underline;}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: rgba(67, 97, 238, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary-color);
    font-size: 32px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* 统计部分 */
.stats {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-light);
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.stat-item h3 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 响应式部分 */
.responsive-section {
    padding: var(--section-padding);
    background: white;
}

.responsive-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.responsive-text {
    flex: 1;
}

.responsive-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.responsive-image {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.device {
    position: relative;
    width: 300px;
}

.device-screen {
    position: absolute;
    top: 12px;
    left: 18px;
    width: 264px;
    height: 468px;
    border-radius: 20px;
    overflow: hidden;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.device-screen img {
    width: 100%;
    height: auto;
}

/* 联系部分 */
.contact {
    padding: var(--section-padding);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    /* text-align: center; */
}

.contact-form {
    max-width: 600px;
    margin: 40px auto 0;
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}
.contact-form p span{
    word-break: break-all;
    color: #00a7a7;
    cursor: pointer;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: inherit;
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

/* 页脚 */
footer {
    background: var(--dark-color);
    color: var(--text-light);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: white;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #aaa;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 1.6rem;
    }
    
    .responsive-content {
        flex-direction: column;
    }
    
    .responsive-text {
        order: 2;
    }
    
    .responsive-image {
        order: 1;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px 0;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
    }
    
    .nav-links.active {
        transform: translateY(0);
    }
    
    .nav-links li {
        margin: 10px 20px;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 140px;
    }
    
    .hero-content {
        margin-bottom: 50px;
    }
    
    .hero-btns {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }
    
    .btn-secondary {
        margin-left: 0;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .hero-content h1 {
        font-size: 1.6rem;
    }
    
    .stat-item h3 {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1rem;
    }
    
    .section-title h2 {
        font-size: 1.8rem;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .contact-form {
        padding: 25px;
    }
}