:root {
    --primary-color: #2c68ff;
    --secondary-color: #34e4aa;
    --text-color: #333;
    --light-bg: #f5f5f5;
    --gradient-bg: linear-gradient(135deg, #2c68ff, #34e4aa);
}

* {
    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);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

/* 默认隐藏汉堡菜单按钮 */
.menu-toggle {
    display: none;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

/* Banner样式 */
.banner {
    background: url('img/bannerbg.jpg') no-repeat center center;
    background-size: cover;
    position: relative;
    color: white;
    width: 100%;
    height: 0;
    padding-bottom: 42.85%;
    text-align: center;
}

/* 调整banner遮罩层的透明度，使颜色更浅 */
.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(44, 104, 255, 0.3),
        rgba(52, 228, 170, 0.3)
    );
    z-index: 1;
}

.banner .container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    width: 100%;
}

.banner h1 {
    font-size: 4em;
    margin-bottom: 20px;
}

.banner h1 span {
    color: #02ccba;
}

.banner p {
    font-size: 2em;
    font-weight: normal;
}

/* 优势板块样式 */
.advantages {
    padding: 80px 0;
    background: var(--light-bg);
}

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

.advantage-item {
    perspective: 1000px;
    height: 300px; /* 设置固定高度 */
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.8s;
    transform-style: preserve-3d;
    cursor: pointer;
}

.advantage-item:hover .card-inner {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.card-front {
    position: relative;
    background: var(--primary-color);
}

.card-front::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
}

.card-front h3 {
    color: white;
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 20px;
}

.card-back {
    transform: rotateY(180deg);
    padding: 30px;
    position: absolute;
    top: 0;
    left: 0;
    background: var(--gradient-bg);
}

.card-back p {
    text-align: center;
    line-height: 1.6;
    color: white;
    margin: 0;
    font-weight: 300;
}

/* 为什么要学编程样式 */
.why-coding {
    padding: 80px 0;
}

/* 统一板块样式 */
.reason-card h3 {
    text-align: center;
    font-size: 2.4em;
    margin-bottom: 40px;
    color: var(--text-color);
    font-weight: 700;
}

.reason-card h3 strong {
    font-weight: 600;
    color: var(--primary-color);
}

.reason-card .reason-content p {
    font-size: 1.1em;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 20px;
    font-weight: 300;
}

.reason-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 40px;
}

.reason-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    position: relative;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
    width: 100%;
    margin: 0 auto;
}

.reason-header {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

.reason-body {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.reason-image {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    height: 300px;
}

.reason-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.reason-card:hover .reason-image img {
    transform: scale(1.05);
}

.reason-content {
    position: relative;
    padding-top: 20px;
    font-size: 1.1em;
    line-height: 1.8;
    color: var(--text-color);
}

.reason-content p {
    margin: 0;
    text-align: justify;
    text-indent: 2em;
    font-weight: 300;
}

.number {
    font-size: 3em;
    color: var(--primary-color);
    opacity: 0.2;
    margin-bottom: 10px;
}

/* 按钮样式 */
.cta-button {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-size: 1.1em;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    transform: scale(1.05);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    .banner h1 {
        font-size: 3.2em;
    }
    
    .banner p {
        font-size: 1.6em;
    }
}

/* 大型手机和小型平板 */
@media (max-width: 768px) {
    .navbar .nav-links {
        display: none;
    }
    
    .banner {
        padding-bottom: 60%;  /* 增加移动端banner高度比例 */
    }
    
    .banner h1 {
        font-size: 2.8em;
        padding: 0 20px;
        line-height: 1.3;
    }
    
    .banner p {
        font-size: 1.4em;
        padding: 0 15px;
        line-height: 1.4;
    }
    
    .section-title h2 {
        font-size: 2em;
        padding: 0 20px;
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
        padding: 0 15px;
    }
    
    .reason-card {
        padding: 20px;
    }
    
    .reason-card h3 {
        font-size: 1.8em;
        line-height: 1.3;
        padding: 0 15px;
    }
    
    .reason-body {
        gap: 20px;
    }
    
    .reason-image {
        height: 200px;
    }
    
    .reason-content {
        padding: 0 15px;
    }
    
    .reason-content p {
        font-size: 1.1em;
        line-height: 1.6;
        text-align: left;  /* 移动端左对齐更易读 */
        text-indent: 0;    /* 移除缩进 */
    }
    
    /* 未来职业图片布局优化 */
    .future-jobs {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-top: 20px;
    }
    
    .main-image {
        height: 200px;
    }
    
    .image-row {
        gap: 10px;
    }
    
    .image-row img {
        height: 120px;
    }
    
    /* 名校图片布局优化 */
    .university-images {
        gap: 15px;
    }
    
    .main-university-image {
        height: 180px;
    }
    
    .sub-university-images {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        max-width: 430px;  /* 控制整体宽度，(100px * 2 + 15px) * 2 */
        margin: 0 auto;
    }
    
    .sub-university-images .image-row {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .sub-university-images img {
        width: 100px;
        height: 100px;
        aspect-ratio: 1/1;
        object-fit: cover;
        object-position: center;
        border-radius: 10px;
        transition: transform 0.3s ease;
    }
    
    .sub-university-images img:hover {
        transform: scale(1.05);
    }
    
    @media (max-width: 768px) {
        .university-images {
            margin: 15px -20px 0;
        }
        
        .main-university-image {
            height: 200px;
            border-radius: 0;
        }
        
        .sub-university-images {
            padding: 0 15px;
            gap: 15px;
        }
        
        .sub-university-images .image-row {
            gap: 15px;
        }
        
        .sub-university-images img {
            width: 80px;
            height: 80px;
        }
    }
    
    @media (max-width: 480px) {
        .sub-university-images img {
            width: 60px;
            height: 60px;
        }
    }
}

/* 手机设备 */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .banner {
        padding-bottom: 80%;  /* 进一步增加小屏幕banner高度 */
    }
    
    .banner h1 {
        font-size: 2em;
        padding: 0 15px;
    }
    
    .banner p {
        font-size: 1.2em;
        padding: 0 15px;
        line-height: 1.4;
    }
    
    .section-title h2 {
        font-size: 1.6em;
        padding: 0 10px;
    }
    
    .advantage-item {
        height: 250px;
    }
    
    .card-front,
    .card-back {
        padding: 15px;
    }
    
    .card-front h3 {
        font-size: 1.4em;
    }
    
    .reason-card {
        padding: 15px;
    }
    
    .reason-card h3 {
        font-size: 1.4em;
        margin-bottom: 20px;
    }
    
    .reason-content p {
        font-size: 1em;
        line-height: 1.6;
    }
    
    .choose-subtitle {
        gap: 15px;
    }
    
    .choose-subtitle span {
        font-size: 1em;
        padding: 5px 0;
    }
    
    .choose-card {
        padding: 15px;
    }
    
    .choose-text h3 {
        font-size: 1.4em;
    }
    
    .choose-text p {
        font-size: 1em;
    }
    
    .about-text p {
        font-size: 1em;
    }
    
    .language-text h3 {
        font-size: 1.4em;
    }
    
    .language-text p {
        font-size: 1em;
    }
    
    .reason-card h3 {
        font-size: 1.5em;
        padding: 0 10px;
    }
    
    .reason-content {
        padding: 0 10px;
    }
    
    .reason-content p {
        font-size: 1em;
    }
    
    .reason-image {
        height: 160px;
    }
    
    .main-image {
        height: 160px;
    }
    
    .image-row img {
        height: 100px;
    }
    
    .main-university-image {
        height: 150px;
    }
    
    .sub-university-images img {
        height: 80px;
    }
    
    /* 数字标识响应式 */
    .number {
        font-size: 2em;
        top: 5px;
        right: 10px;
    }
}

/* 导航栏链接样式 */
.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* 学习中心按钮样式 */
.study-btn {
    background: var(--gradient-bg);
    color: white !important;
    padding: 10px 20px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.study-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* Logo样式 */
.logo {
    height: 50px;
    display: flex;
    align-items: center;
}

.logo img {
    height: 100%;
    width: auto;
}

/* 标题容器，用于居中显示 */
.section-title {
    text-align: center;
    width: 100%;
    margin-bottom: 40px;
}

/* 标题样式优化 */
h2 {
    text-align: center;
    font-size: 2.4em;
    margin-bottom: 40px;
    color: var(--text-color);
    line-height: 1.4;
    font-weight: 700;
    position: relative;
    display: inline-block;
    width: auto;
    margin: 0 auto;
}

/* 标题下划线动画效果 */
h2 span {
    position: relative;
    display: inline-block;
    text-align: center;
}

h2 span::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 30px;
    height: 3px;
    background: var(--gradient-bg);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

h2:hover span::after {
    width: 60px;
}

h3 {
    font-size: 1.8em;
    margin: 15px 0;
    color: var(--text-color);
    font-weight: 600;
}

/* 图标样式 */
.icon {
    font-size: 2.5em;
    margin-bottom: 15px;
}

/* 数字标识样式 */
.number {
    font-size: 3em;
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: 10px;
    right: 20px;
}

/* 页脚样式 */
.footer {
    background: #353535;
    padding: 40px 0;
    text-align: center;
}

.footer-brand {
    font-size: 0.9em;
    color: white;
    margin-bottom: 20px;
    font-weight: 300;
}

.footer-bottom {
    color: white;
    opacity: 0.8;
    font-size: 0.9em;
}

.beian {
    color: white;
    text-decoration: none;
    margin-left: 10px;
    opacity: 0.8;
    font-weight: 300;
}

.beian:hover {
    opacity: 1;
    text-decoration: underline;
}

/* 响应式设计增强 */
@media (max-width: 768px) {
    /* 汉堡菜单按钮 */
    .menu-toggle {
        display: block;
        font-size: 1.5em;
        cursor: pointer;
    }
    
    /* 导航菜单响应式布局 */
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        display: none;
        align-items: flex-start;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    /* 卡片布局调整 */
    .reason-cards {
        grid-template-columns: 1fr;
    }
    
    /* 间距调整 */
    .advantage-item,
    .reason-card {
        padding: 20px;
    }
    
    /* 文字大小调整 */
    h2 {
        font-size: 2em;
    }
    
    h3 {
        font-size: 1.5em;
    }
    
    /* 移动端学习中心按钮样式调整 */
    .study-btn {
        margin-top: 10px;
        width: 100%;
        text-align: center;
    }
    
    .logo {
        height: 40px;
    }
}

/* 平板设备适配 */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    h2 {
        font-size: 2em;
    }
} 

/* 当元素进入视口时的动画 */
.reason-card.visible {
    opacity: 1;
    transform: translateY(0);
} 

/* 未来职业图片布局 */
.future-jobs {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 30px;
    margin-top: 40px;
}

.main-image {
    height: 400px;
    overflow: hidden;
    border-radius: 10px;
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.main-image:hover img {
    transform: scale(1.05);
}

.sub-images {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.image-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.image-row img {
    width: 100%;
    height: 190px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.image-row img:hover {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .future-jobs {
        grid-template-columns: 1fr;
    }
    
    .main-image {
        height: 300px;
    }
    
    .image-row img {
        height: 150px;
    }
} 

/* 第一个reason-card的布局 */
.reason-card:first-child .reason-body {
    grid-template-columns: 400px 1fr;
}

.job-list li div {
    position: relative;
    z-index: 2;
    margin-bottom: 25px;
} 

/* 学习提升图片样式 */
.study-improvement {
    margin-top: 30px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.study-improvement img {
    width: 100%;
    display: block;
    transition: transform 0.3s ease;
}

.study-improvement:hover img {
    transform: scale(1.02);
}

/* 第三个板块特殊样式 */
.reason-card:nth-child(3) .reason-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .reason-card h3 {
        font-size: 1.6em;
        margin-bottom: 20px;
    }

    .reason-card .reason-content p {
        font-size: 1em;
        line-height: 1.6;
    }

    .study-improvement {
        margin-top: 20px;
    }
} 

/* 第四个板块特殊样式 */
.reason-card:nth-child(4) .reason-body {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

.reason-card:nth-child(4) .reason-content {
    padding-top: 0;
    max-width: 100%;
    padding-right: 20px;
}

/* 名校图片布局 */
.university-images {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 30px;
}

.main-university-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
    border-radius: 10px;
}

.main-university-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.main-university-image:hover img {
    transform: scale(1.05);
}

.sub-university-images {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-width: 430px;  /* 控制整体宽度，(100px * 2 + 15px) * 2 */
    margin: 0 auto;
}

.sub-university-images .image-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.sub-university-images img {
    width: 100px;
    height: 100px;
    aspect-ratio: 1/1;
    object-fit: cover;
    object-position: center;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.sub-university-images img:hover {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .reason-card:nth-child(4) .reason-body {
        grid-template-columns: 1fr;
    }

    .university-images {
        margin: 15px -20px 0;
    }
    
    .main-university-image {
        height: 200px;
        border-radius: 0;
    }
    
    .sub-university-images {
        padding: 0 15px;
        gap: 15px;
    }
    
    .sub-university-images .image-row {
        gap: 15px;
    }
    
    .sub-university-images img {
        width: 80px;
        height: 80px;
    }
} 

/* 编程语言选择样式 */
.language-choice {
    padding: 80px 0;
    background: var(--light-bg);
}

.language-cards {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.language-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 40px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
    margin-bottom: 30px;
}

.language-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.language-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    align-items: start;
}

.language-content.reverse {
    grid-template-columns: 2fr 1fr;
}

.language-image {
    height: 300px;
    overflow: hidden;
    border-radius: 10px;
}

.language-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.language-image:hover img {
    transform: scale(1.05);
}

.language-text h3 {
    font-size: 2em;
    color: var(--text-color);
    margin-bottom: 20px;
}

.age-range {
    font-size: 0.6em;
    color: var(--primary-color);
    margin-left: 10px;
}

.language-text p {
    font-size: 1.1em;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 20px;
    font-weight: 300;
}

.language-text p:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .language-content,
    .language-content.reverse {
        grid-template-columns: 1fr;
    }

    .language-image {
        height: 250px;
    }

    .language-card {
        padding: 20px;
    }

    .language-text h3 {
        font-size: 1.6em;
    }

    .language-text p {
        font-size: 1em;
        line-height: 1.6;
    }
} 

/* 为什么选择羊七七编程样式 */
.why-choose-us {
    padding: 80px 0;
    background: white;
}

.choose-subtitle {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 40px 0 60px;
}

.choose-subtitle span {
    font-size: 1.4em;
    color: var(--primary-color);
    position: relative;
    padding: 10px 0;
    transition: all 0.3s ease;
    cursor: pointer;
}

.choose-subtitle span::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-bg);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.choose-subtitle span:hover {
    color: var(--secondary-color);
}

.choose-subtitle span:hover::after {
    width: 100%;
}

@media (max-width: 768px) {
    .choose-subtitle {
        flex-wrap: wrap;
        gap: 20px;
        justify-content: center;
    }

    .choose-subtitle span {
        font-size: 1.1em;
        padding: 8px 0;
    }
}

.choose-cards {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.choose-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 40px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

.choose-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.choose-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.choose-text {
    text-align: center;
}

.choose-text h3 {
    font-size: 2em;
    color: var(--text-color);
    margin-bottom: 20px;
}

.choose-text p {
    font-size: 1.2em;
    line-height: 1.8;
    color: var(--text-color);
    max-width: 800px;
    margin: 0 auto;
    margin-bottom: 15px;
    font-weight: 300;
}

.choose-text .highlight {
    font-size: 1.3em;
    color: var(--primary-color);
    font-weight: 500;
    margin: 20px auto;
}

.teacher-showcase,
.teaching-mode,
.system-showcase {
    width: 100%;
    height: 400px;
    overflow: hidden;
    border-radius: 10px;
}

.teacher-showcase img,
.teaching-mode img,
.system-showcase img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.teacher-showcase:hover img,
.teaching-mode:hover img,
.system-showcase:hover img {
    transform: scale(1.05);
}

.course-showcase {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
}

.course-showcase img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.course-showcase img:hover {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .choose-subtitle {
        flex-wrap: wrap;
        gap: 20px;
        justify-content: center;
    }

    .choose-subtitle span {
        font-size: 1.1em;
        padding: 8px 16px;
    }

    .choose-card {
        padding: 20px;
    }

    .choose-text h3 {
        font-size: 1.6em;
    }

    .choose-text p {
        font-size: 1.1em;
        line-height: 1.6;
    }

    .choose-text .highlight {
        font-size: 1.2em;
    }

    .teacher-showcase,
    .teaching-mode,
    .system-showcase {
        height: 250px;
    }

    .course-showcase img {
        height: 200px;
    }
} 

/* 关于羊七七样式 */
.about-yangqiqi {
    padding: 80px 0;
    background: var(--light-bg);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
}

.about-text {
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.2em;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 20px;
    font-weight: 300;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-image {
    width: 100%;
    height: 400px;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.about-image:hover img {
    transform: scale(1.02);
}

@media (max-width: 768px) {
    .about-text p {
        font-size: 1.1em;
        line-height: 1.6;
    }

    .about-image {
        height: 250px;
    }
} 

/* 统一正文文字样式 */
.reason-content p,
.choose-text p,
.language-text p,
.about-text p,
.footer-content p {
    font-size: 1.1em;
    line-height: 1.8;
    color: var(--text-color);
    font-weight: 300;
}

/* 高亮文字保持原有字重 */
.choose-text .highlight,
.reason-card h3 strong,
.language-text .age-range {
    font-weight: 500;
}

/* 卡片背面文字 */
.card-back p {
    text-align: center;
    line-height: 1.6;
    color: white;
    margin: 0;
    font-weight: 300;
}

/* 页脚文字 */
.footer-content p,
.footer-bottom p {
    font-weight: 300;
} 

/* 特殊布局卡片的响应式优化 */
@media (max-width: 768px) {
    .reason-card:first-child .reason-body {
        grid-template-columns: 1fr;  /* 移动端单列布局 */
    }

    .reason-card:nth-child(4) .reason-body {
        grid-template-columns: 1fr;
    }

    .reason-card:nth-child(4) .reason-content {
        padding-right: 15px;
    }
} 

/* 为什么要学编程板块的响应式优化 */
@media (max-width: 1024px) {
    .reason-card {
        padding: 30px;
    }

    .reason-card h3 {
        font-size: 2em;
        line-height: 1.4;
    }

    .reason-image {
        height: 250px;
    }

    .future-jobs {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .main-image {
        height: 300px;
    }

    .image-row img {
        height: 150px;
    }
}

@media (max-width: 768px) {
    .reason-cards {
        gap: 20px;
    }

    .reason-card {
        padding: 20px;
    }

    .reason-header {
        margin-bottom: 20px;
    }

    .reason-card h3 {
        font-size: 1.8em;
        line-height: 1.3;
        padding: 0 15px;
        margin-bottom: 15px;
    }

    /* 数字标识调整 */
    .number {
        font-size: 2.5em;
        position: static;
        margin-bottom: 10px;
        display: block;
        text-align: center;
    }

    /* 第一个卡片特殊布局调整 */
    .reason-card:first-child .reason-body {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .reason-image {
        height: 200px;
        margin: 0 -20px;
        border-radius: 0;
    }

    .reason-content {
        padding: 0 10px;
    }

    .reason-content p {
        font-size: 1.1em;
        line-height: 1.6;
        text-align: left;
        text-indent: 0;
        margin-bottom: 15px;
    }

    /* 未来职业图片布局调整 */
    .future-jobs {
        margin: 15px -20px 0;
    }

    .main-image {
        height: 200px;
        border-radius: 0;
    }

    .sub-images {
        padding: 0 15px;
    }

    .image-row {
        gap: 10px;
    }

    .image-row img {
        height: 120px;
    }

    /* 学习提升图片调整 */
    .study-improvement {
        margin: 15px -20px 0;
        border-radius: 0;
    }

    /* 名校图片布局调整 */
    .university-images {
        margin: 15px -20px 0;
    }

    .main-university-image {
        height: 180px;
        border-radius: 0;
    }

    .sub-university-images {
        padding: 0 15px;
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        max-width: 430px;  /* 控制整体宽度，(100px * 2 + 15px) * 2 */
        margin: 0 auto;
    }

    .sub-university-images .image-row {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .sub-university-images img {
        width: 100px;
        height: 100px;
        aspect-ratio: 1/1;
        object-fit: cover;
        object-position: center;
        border-radius: 10px;
        transition: transform 0.3s ease;
    }

    .sub-university-images img:hover {
        transform: scale(1.05);
    }

    @media (max-width: 768px) {
        .university-images {
            margin: 15px -20px 0;
        }
        
        .main-university-image {
            height: 200px;
            border-radius: 0;
        }
        
        .sub-university-images {
            padding: 0 15px;
            gap: 15px;
        }
        
        .sub-university-images .image-row {
            gap: 15px;
        }
        
        .sub-university-images img {
            width: 80px;
            height: 80px;
        }
    }

    @media (max-width: 480px) {
        .sub-university-images img {
            width: 60px;
            height: 60px;
        }
    }
}

@media (max-width: 480px) {
    .reason-card {
        padding: 15px;
    }

    .reason-card h3 {
        font-size: 1.5em;
        padding: 0 10px;
    }

    .number {
        font-size: 2em;
    }

    .reason-content p {
        font-size: 1em;
        line-height: 1.5;
    }

    .reason-image {
        height: 160px;
        margin: 0 -15px;
    }

    /* 未来职业图片进一步调整 */
    .future-jobs {
        margin: 10px -15px 0;
    }

    .main-image {
        height: 160px;
    }

    .sub-images {
        padding: 0 10px;
    }

    .image-row img {
        height: 100px;
    }

    /* 学习提升图片进一步调整 */
    .study-improvement {
        margin: 10px -15px 0;
    }

    /* 名校图片进一步调整 */
    .university-images {
        margin: 10px -15px 0;
    }

    .main-university-image {
        height: 150px;
    }

    .sub-university-images {
        padding: 0 10px;
    }

    .sub-university-images img {
        height: 80px;
    }
} 

/* 第一个reason-card的特殊样式 */
.reason-card:first-child {
    overflow: hidden;
}

.reason-card:first-child .reason-header {
    position: relative;
    padding: 0 20px;
    margin-bottom: 30px;
}

.reason-card:first-child h3 {
    font-size: 2.4em;
    line-height: 1.3;
    text-align: center;
    margin-bottom: 0;
}

.reason-card:first-child .reason-content {
    padding: 0 30px;
}

.reason-card:first-child .reason-content p {
    font-size: 1.2em;
    line-height: 1.8;
    text-align: justify;
    margin-bottom: 0;
}

/* 响应式优化 */
@media (max-width: 1024px) {
    .reason-card:first-child h3 {
        font-size: 2em;
    }

    .reason-card:first-child .reason-content p {
        font-size: 1.1em;
    }
}

@media (max-width: 768px) {
    .reason-card:first-child {
        padding: 20px;
    }

    .reason-card:first-child .reason-header {
        padding: 0;
        margin-bottom: 20px;
    }

    .reason-card:first-child h3 {
        font-size: 1.8em;
        padding: 0 10px;
        line-height: 1.4;
    }

    .reason-card:first-child .reason-content {
        padding: 0 10px;
    }

    .reason-card:first-child .reason-content p {
        font-size: 1.1em;
        line-height: 1.6;
        text-align: left;
        margin-bottom: 15px;
    }

    .reason-card:first-child .reason-image {
        margin: 0 -20px;
        height: 200px;
    }

    .reason-card:first-child .reason-image img {
        border-radius: 0;
    }
}

@media (max-width: 480px) {
    .reason-card:first-child {
        padding: 15px;
    }

    .reason-card:first-child h3 {
        font-size: 1.5em;
        padding: 0;
    }

    .reason-card:first-child .reason-content {
        padding: 0;
    }

    .reason-card:first-child .reason-content p {
        font-size: 1em;
        line-height: 1.5;
    }

    .reason-card:first-child .reason-image {
        margin: 0 -15px;
        height: 160px;
    }

    /* 数字标识在小屏幕上的优化 */
    .reason-card:first-child .number {
        font-size: 2em;
        position: static;
        display: block;
        text-align: center;
        margin-bottom: 10px;
    }
}