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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* 头部导航 */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #F5F7FA;
}

header .container {
    display: flex;
    align-items: center;
    height: 84px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 4px;
}

.logo .logo-icon {
    border-radius: 6px; 
    width: 24px;
}

.logo .logo-text {
    width: 64px;
}

nav {
    position: absolute;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
}

.tabs {
    list-style: none;
    display: flex;
}

.tabs li {
    margin: 0 15px;
}

.tabs a {
    text-decoration: none;
    color: #18191F;
    font-size: 15px;
    transition: all 0.2s linear;
    position: relative;
    display: block;
    padding: 10px 15px;
    z-index: 1001;
    cursor: pointer;
}

.tabs li a:not(.active):hover {
    color: #00BFC3;
    transform: scale(1.1);
}


.tabs a.active {
    color: #00BFC3;
    font-weight: 500;
}

/* 横幅区域 */
.hero {
    height: 70vh;
    min-height: 300px;
    background-image: url('./img/banner.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    color: #fff;
}

.hero-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
}

.hero h1 {
    margin-bottom: 15px;
    font-family: PingFang SC;
    font-weight: 600;
    font-style: Semibold;
    font-size: 56px;
    leading-trim: NONE;
    line-height: 76px;
}

.hero p {
    font-family: PingFang SC;
    font-style: Regular;
    font-size: 16px;
    leading-trim: NONE;
    line-height: 24px;
    letter-spacing: 0%;
}

/* 通用section样式 */
.section {
    padding: 40px 0 0;
}

.section h2 {
    font-size: 36px;
    text-align: center;
    color: #4D4D4D;
    line-height: 44px;
    font-weight: 500;
}

.section-subtitle {
    text-align: center;
    color: #4D4D4D;
    font-size: 16px;
    letter-spacing: 2px;
    line-height: 44px;
}
.app-intro-wrapper {
    background-color: #F5F7FA;
}
/* 应用介绍 */
.app-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 20px 0;
    border-radius: 8px;
}

.app-images {
    flex: 1;
    min-width: 300px;
    display: flex;
    gap: 30px;
}

.app-images img {
    width: 200px;
    height: auto;
    /* border-radius: 20px; */
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.app-text {
    flex: 1;
    min-width: 300px;
}

.app-text h3 {
    font-size: 36px;
    margin-bottom: 10px;
    color: #4D4D4D;
    font-weight: 500;
}

.app-text p {
    font-size: 14px;
    line-height: 22px;
    color: #717171;
}

/* 公司简介 */
.company-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: no-wrap;
    margin-top: 20px;
    gap: 40px;
}

.company-text {
    flex: 1;
    min-width: 300px;
}

.company-text h3 {
    font-size: 36px;
    margin-bottom: 10px;
    color: #4D4D4D;
    line-height: 44px;
    font-weight: 500;
}

.company-text p {
    font-size: 14px;
    line-height: 22px;
    color: #717171;
}

.company-image {
    min-width: 300px;
    display: flex;
    justify-content: center;
}

.company-image {
    width: 442px;
    max-width: 500px;
    height: auto;
}

/* 页脚 */
footer {
    margin-top: 40px;
    background-color: #263238;
    color: #fff;
    padding: 40px 0;
    text-align: center;
}

.footer-content p {
    margin-bottom: 10px;
    font-size: 14px;
    line-height: 1.6;
}
.footer-content p.banq {
    text-decoration: underline;
    cursor: pointer;
}
@media (max-width: 1200px) {
    header .container {
       padding-left: 40px;
    }
}
/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        /* flex-direction: column; */
        /* padding: 10px 20px; */
    }
    
    
    .tabs li {
        margin: 0 15px;
    }
    
    .tabs a.active::after {
        bottom: -15px;
    }
    .hero {
        height: 30vh;
    }
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .section h2 {
        font-size: 28px;
    }
    
    .app-content {
        flex-direction: column;
    }
    .company-content {
        flex-direction: column-reverse;
        gap: 20px;
    }
    .app-text {
        margin-top: 20px;
    }
    .company-content {
        margin-top: 0;
    }
    .app-text, .company-text {
        text-align: center;
        padding: 0 20px;
    }
    .app-images {
        justify-content: center;
    }
    .app-text h3, .company-text h3 {
        font-size: 20px;
        line-height: 30px;
    }
    .app-images img {
        width: 150px;
    }
   
    .company-image {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    header {
        display: none;
    }
    .tabs {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .tabs li {
        margin: 5px 10px;
    }
    .hero {
        height: 15vh;
    }
    .hero-content {
        text-align: center;
    }
    .hero h1 {
        font-size: 24px;
        margin-bottom: 0;
    }
    
    .section h2 {
        font-size: 24px;
    }
    
    .app-images {
        gap: 20px;
    }
    
    .app-images img {
        width: 120px;
    }
}

/* 滚动动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}