/* 响应式设计 */

/* 大屏幕设备 (1200px 及以上) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }
    
    .hero .container {
        max-width: 1400px;
        padding: 0 40px;
        display: flex;
        align-items: center;
        gap: 6rem;
    }
    
    .hero {
        padding: 160px 0 120px;
        min-height: 100vh;
    }
    
    .hero h1 {
        font-size: 4.5rem;
    }
    
    .hero h2 {
        font-size: 2.4rem;
    }
    
    .hero p {
        font-size: 1.4rem;
    }
    
    .hero-image {
        flex: 0 0 520px;
    }
}

/* 中等屏幕设备 (768px - 1199px) */
@media (max-width: 1199px) and (min-width: 768px) {
    .container {
        max-width: 960px;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
        padding: 0 20px;
    }
    
    .hero {
        padding: 120px 0 80px;
        min-height: auto;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-image {
        flex: 0 0 auto;
        max-width: 500px;
    }
    
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-link {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
}

/* 平板设备 (768px - 1023px) */
@media (max-width: 1023px) and (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .rankings-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .programs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .campus-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 手机设备 (767px 及以下) */
@media (max-width: 767px) {
    .container {
        padding: 0 15px;
    }
    
    /* 导航栏移动端样式 */
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 0;
        flex-direction: column;
        background-color: #1e3c72;
        width: 100vw;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2.5rem 0 2rem 0;
        z-index: 2000;
        max-height: 100dvh;
        overflow-y: auto;
        align-items: center;
    }
    .nav-menu.active {
        left: 0;
        top: 0;
    }
    .nav-menu::before {
        display: none;
    }
    .nav-menu.active::before {
        display: block;
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(30,60,114,0.85);
        z-index: -1;
    }
    .nav-item {
        margin: 2rem 0;
    }
    .nav-link {
        font-size: 1.2rem;
        padding: 1.2rem 2.5rem;
        display: block;
        border-radius: 8px;
        transition: background 0.2s, color 0.2s;
    }
    .nav-link:active,
    .nav-link.active {
        background: #ffd700;
        color: #1e3c72;
    }
    
    /* 英雄区域移动端样式 */
    .hero {
        padding: 120px 0 24px;
        min-height: unset;
        background-size: cover;
    }
    .hero .container {
        flex-direction: column;
        text-align: center;
        gap: 1.2rem;
        padding: 0 10px;
    }
    .hero-content {
        max-width: 100%;
        margin-bottom: 1.2rem;
    }
    .hero-image {
        margin: 0 auto;
        max-width: 90vw;
    }
    .hero-image img {
        border-radius: 18px;
        box-shadow: 0 10px 24px rgba(0,0,0,0.25);
    }
    .hero h1 {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }
    .hero h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }
    .hero p {
        font-size: 1rem;
        margin-bottom: 1.2rem;
    }
    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 1rem;
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    /* 章节标题移动端样式 */
    .section-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    /* 特色区域移动端样式 */
    .features {
        padding: 60px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    /* 排名区域移动端样式 */
    .rankings {
        padding: 60px 0;
    }
    
    .rankings-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .ranking-item {
        padding: 1.5rem;
    }
    
    .ranking-number {
        font-size: 2rem;
    }
    
    .ranking-label {
        font-size: 0.9rem;
    }
    
    /* 专业预览移动端样式 */
    .programs-preview {
        padding: 60px 0;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .program-card img {
        height: 180px;
    }
    
    .program-content {
        padding: 1rem;
    }
    
    /* 校园风光预览移动端样式 */
    .campus-preview {
        padding: 60px 0;
    }
    
    .campus-gallery {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .gallery-item img {
        height: 180px;
    }
    
    /* 底部栏移动端样式 */
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    
    .contact-info p {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* 小屏手机设备 (480px 及以下) */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 1.2rem;
    }
    
    .hero p {
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .rankings-grid {
        grid-template-columns: 1fr;
    }
    
    .ranking-item {
        padding: 1rem;
    }
    
    .ranking-number {
        font-size: 1.8rem;
    }
    
    .feature-card {
        padding: 1rem;
    }
    
    .program-content {
        padding: 0.8rem;
    }
    
    .nav-logo .logo-text {
        font-size: 1.2rem;
    }
    
    .logo-img {
        width: 30px;
        height: 30px;
    }
}

/* 超小屏设备 (320px 及以下) */
@media (max-width: 320px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero h2 {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .nav-logo .logo-text {
        font-size: 1rem;
    }
}

/* 横屏模式优化 */
@media (orientation: landscape) and (max-height: 500px) {
    .hero {
        min-height: auto;
        padding: 60px 0 40px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 1.3rem;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .footer,
    .hero-buttons,
    .social-links {
        display: none;
    }
    
    .hero {
        background: white !important;
        color: black !important;
        padding: 20px 0;
    }
    
    .section-title {
        color: black !important;
    }
    
    .feature-card,
    .program-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}