@media (max-width: 480px) {
    /* 超小屏幕导航优化 */
    .navbar {
        padding: 8px 0;
    }
    
    .nav-content {
        min-height: 40px;
    }
    
    .logo-svg {
        height: 32px; /* 小手机尺寸 */
        max-width: 160px;
    }
    
    .menu-toggle {
        width: 32px;
        height: 26px;
        padding: 5px;
    }
    
    .menu-toggle-bar {
        height: 2px;
    }
    
    .nav-menu {
        width: 90%;
        max-width: 260px;
        padding: 60px 15px 20px;
    }
    
    .nav-link {
        font-size: 15px;
        padding: 12px 0;
    }
    
    .nav-menu .cta-button {
        padding: 10px;
        font-size: 14px;
        margin-top: 20px;
    }
    
    /* 内容区域调整 */
    .hero {
        padding: 75px 0 40px;
        margin-top: 56px;
    }
    
    .hero-title {
        font-size: 24px;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 15px;
        line-height: 1.4;
    }
    
    .hero-description {
        font-size: 14px;
        line-height: 1.5;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 12px 16px;
        font-size: 15px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .service-card {
        padding: 20px 12px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-svg {
        height: 44px; /* 在高分辨率屏幕上稍微放大，保持清晰 */
    }
    
    .menu-toggle-bar {
        height: 3px;
    }
}

/* 平板设备优化 (769px-1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-menu {
        gap: 25px;
    }
    
    .nav-link {
        font-size: 15px;
    }
    
    .logo-svg {
        height: 40px; /* 平板适中尺寸 */
        max-width: 200px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .cta-button {
        padding: 9px 18px;
        font-size: 14px;
    }

@media (max-width: 480px) {
    /* 超小屏幕导航优化 */
    .navbar {
        padding: 8px 0;
    }
    
    .nav-content {
        min-height: 40px;
    }
    
    .logo-svg {
        height: 32px; /* 小手机尺寸 */
        max-width: 160px;
    }
    
    .menu-toggle {
        width: 32px;
        height: 26px;
        padding: 5px;
    }
    
    .menu-toggle-bar {
        height: 2px;
    }
    
    .nav-menu {
        width: 90%;
        max-width: 260px;
        padding: 60px 15px 20px;
    }
    
    .nav-link {
        font-size: 15px;
        padding: 12px 0;
    }
    
    .nav-menu .cta-button {
        padding: 10px;
        font-size: 14px;
        margin-top: 20px;
    }
    
    /* 内容区域调整 */
    .hero {
        padding: 75px 0 40px;
        margin-top: 56px;
    }
    
    .hero-title {
        font-size: 24px;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 15px;
        line-height: 1.4;
    }
    
    .hero-description {
        font-size: 14px;
        line-height: 1.5;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 12px 16px;
        font-size: 15px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .service-card {
        padding: 20px 12px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-svg {
        height: 44px; /* 在高分辨率屏幕上稍微放大，保持清晰 */
    }
    
    .menu-toggle-bar {
        height: 3px;
    }
}

/* 平板设备优化 (769px-1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-menu {
        gap: 25px;
    }
    
    .nav-link {
        font-size: 15px;
    }
    
    .logo-svg {
        height: 40px; /* 平板适中尺寸 */
        max-width: 200px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .cta-button {
        padding: 9px 18px;
        font-size: 14px;
    }
}