/**
 * 响应式通用样式
 * 适用于所有屏幕尺寸的响应式布局
 */

/* ===== 基础响应式断点 ===== */
@media (max-width: 1200px) {
    /* 大屏幕到笔记本 */
    .container, .wrap {
        max-width: 100%;
        padding: 0 20px;
    }
    
    .about-v2-qualifications {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    /* 笔记本到平板 */
    .about-v2-hero {
        height: 280px;
    }
    
    .about-v2-hero-title {
        font-size: 36px;
    }
    
    .about-v2-section-header {
        margin-bottom: 30px;
    }
    
    .about-v2-qualifications {
        gap: 20px;
    }
    
    .about-v2-qual-item {
        padding: 25px 20px;
    }
    
    .footer {
        padding: 30px 20px;
    }
}

@media (max-width: 768px) {
    /* 平板到手机横屏 */
    body {
        font-size: 14px;
    }
    
    .about-v2-hero {
        height: 200px;
    }
    
    .about-v2-hero-content {
        padding: 20px;
    }
    
    .about-v2-hero-title {
        font-size: 28px;
    }
    
    .about-v2-hero-subtitle {
        font-size: 16px;
    }
    
    .about-v2-breadcrumb-section {
        padding: 10px 0;
    }
    
    .about-v2-submenu {
        padding: 10px 0;
    }
    
    .about-v2-submenu-list {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .about-v2-submenu-list::-webkit-scrollbar {
        display: none;
    }
    
    .about-v2-submenu-item {
        flex-shrink: 0;
    }
    
    .about-v2-submenu-link {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .about-v2-content {
        padding: 20px 15px;
    }
    
    .about-v2-section {
        margin-bottom: 30px;
    }
    
    .about-v2-section-header {
        margin-bottom: 20px;
    }
    
    .about-v2-section-title {
        font-size: 24px;
    }
    
    .about-v2-section-subtitle {
        font-size: 14px;
    }
    
    .about-v2-qualifications {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    
    .about-v2-qual-icon {
        font-size: 28px;
    }
    
    .about-v2-qual-title {
        font-size: 14px;
    }
    
    .about-v2-qual-desc {
        font-size: 13px;
    }
    
    .about-v2-intro-card {
        padding: 20px 15px;
    }
    
    .map-container iframe {
        height: 250px;
    }
    
    .about-v2-cta {
        padding: 30px 15px;
    }
    
    .about-v2-cta-title {
        font-size: 22px;
    }
    
    .about-v2-cta-text {
        font-size: 14px;
    }
    
    /* 表单响应式 */
    .form-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-control {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .submit-btn {
        width: 100%;
        padding: 14px 24px;
        font-size: 15px;
    }
    
    /* 底部响应式 */
    .f_logo {
        text-align: center;
        float: none;
        margin-bottom: 20px;
    }
    
    .f_logo img {
        max-width: 150px;
    }
    
    .f_ban {
        text-align: center;
        padding: 0;
    }
    
    .f_er {
        float: none;
        text-align: center;
        margin-top: 20px;
    }
    
    .f_er p {
        display: inline-block;
        margin: 0 10px;
    }
    
    /* 悬浮客服响应式 */
    .client-2 {
        right: 10px;
        bottom: 60px;
    }
    
    .client-2 li {
        margin-bottom: 8px;
    }
}

/* ===== 手机竖屏 (最大480px) ===== */
@media (max-width: 480px) {
    .about-v2-hero {
        height: 160px;
    }
    
    .about-v2-hero-title {
        font-size: 22px;
    }
    
    .about-v2-hero-subtitle {
        font-size: 13px;
    }
    
    .about-v2-breadcrumb-section {
        font-size: 12px;
    }
    
    .about-v2-submenu-link {
        padding: 6px 10px;
        font-size: 12px;
    }
    
    .about-v2-section-title {
        font-size: 20px;
    }
    
    .about-v2-qualifications {
        grid-template-columns: 1fr;
    }
    
    .about-v2-qual-item {
        display: flex;
        align-items: center;
        padding: 15px;
    }
    
    .about-v2-qual-icon {
        font-size: 24px;
        margin-right: 15px;
        margin-bottom: 0;
    }
    
    .about-v2-qual-content {
        flex: 1;
    }
    
    .about-v2-intro-card {
        padding: 15px 10px;
    }
    
    .map-container iframe {
        height: 200px;
    }
    
    .about-v2-cta-title {
        font-size: 18px;
    }
    
    .about-v2-cta-text {
        font-size: 13px;
    }
    
    .form-control {
        padding: 10px 12px;
        font-size: 14px;
    }
    
    textarea.form-control {
        min-height: 120px;
    }
    
    /* 底部 */
    .footer {
        padding: 20px 10px;
    }
    
    .f_logo img {
        max-width: 120px;
    }
    
    .f_ban p {
        font-size: 12px;
        line-height: 1.8;
    }
    
    .f_er p {
        margin: 0 5px;
    }
    
    .f_er img {
        width: 80px;
    }
    
    /* 悬浮客服 - 小屏幕隐藏 */
    .client-2 {
        transform: scale(0.85);
    }
}

/* ===== 超小屏幕 (最大320px) ===== */
@media (max-width: 320px) {
    .about-v2-hero-title {
        font-size: 18px;
    }
    
    .about-v2-section-title {
        font-size: 18px;
    }
    
    .about-v2-qual-icon {
        font-size: 20px;
    }
    
    .about-v2-qual-title {
        font-size: 13px;
    }
    
    .about-v2-qual-desc {
        font-size: 12px;
    }
    
    .submit-btn {
        padding: 12px 20px;
        font-size: 14px;
    }
}

/* ===== 横屏适配 ===== */
@media (max-height: 500px) and (orientation: landscape) {
    .about-v2-hero {
        height: 150px;
    }
    
    .about-v2-cta {
        padding: 20px 15px;
    }
}

/* ===== 打印样式 ===== */
@media print {
    .client-2,
    .f_bg,
    .about-v2-submenu,
    .about-v2-breadcrumb-section {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }
    
    .about-v2-main {
        max-width: 100%;
    }
}

/* ===== 无障碍访问增强 ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== 深色模式支持 ===== */
@media (prefers-color-scheme: dark) {
    /* 如果需要深色模式支持可以在这里添加 */
}