/* ============================================
   响应式样式 - 北京新目义眼官网
   断点：1200px / 992px / 768px / 576px
   ============================================ */

/* ========== 1200px 以下 ========== */
@media (max-width: 1200px) {
    :root {
        --container-width: 960px;
        --font-size-4xl: 36px;
        --font-size-3xl: 28px;
        --font-size-2xl: 24px;
    }
    
    .banner {
        height: 480px;
    }
    
    .banner-title {
        font-size: 40px;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

/* ========== 992px 以下（平板横屏） ========== */
@media (max-width: 992px) {
    :root {
        --header-height: 70px;
        --spacing-4xl: 60px;
        --spacing-3xl: 48px;
        --spacing-2xl: 36px;
    }
    
    .main-nav {
        display: none;
    }
    
    .header-phone {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
        order: 3;
    }
    
    .header-inner {
        justify-content: space-between;
    }
    
    .banner {
        height: 420px;
    }
    
    .banner-title {
        font-size: 32px;
    }
    
    .banner-subtitle {
        font-size: var(--font-size-md);
    }
    
    .pain-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .case-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .product-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .about-wrap {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .about-images {
        height: 300px;
        order: -1;
    }
    
    .process-steps {
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }
    
    .process-step {
        flex: 0 0 calc(50% - var(--spacing-lg));
        margin-bottom: var(--spacing-lg);
    }
    
    .process-step:not(:last-child)::after {
        display: none;
    }
    
    .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .news-wrap {
        grid-template-columns: 1fr;
    }
    
    .news-featured {
        min-height: 280px;
    }
    
    .cta-content {
        flex-direction: column;
        text-align: center;
    }
}

/* ========== 768px 以下（平板竖屏/手机） ========== */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 30px;
        --font-size-3xl: 24px;
        --font-size-2xl: 20px;
        --font-size-xl: 18px;
        --spacing-4xl: 48px;
        --spacing-3xl: 36px;
        --spacing-2xl: 28px;
        --spacing-xl: 24px;
    }
    
    body {
        padding-bottom: 60px; /* 留出移动端底部栏空间 */
    }
    
    .logo img {
        height: 36px;
        max-width: 200px;
    }
    
    .header-phone {
        gap: 6px;
    }
    
    .header-phone .phone-number {
        font-size: 15px;
        line-height: 1.2;
    }
    
    .header-phone .phone-icon {
        font-size: var(--font-size-lg);
    }
    
    .banner {
        height: 360px;
    }
    
    .banner-title {
        font-size: 26px;
        margin-bottom: var(--spacing-md);
    }
    
    .banner-subtitle {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xl);
    }
    
    .banner-btns {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }
    
    .banner-arrow {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    
    .banner-arrow.prev { left: 10px; }
    .banner-arrow.next { right: 10px; }
    
    .section {
        padding: var(--spacing-3xl) 0;
    }
    
    .section-header {
        margin-bottom: var(--spacing-xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-desc {
        font-size: var(--font-size-sm);
    }
    
    .pain-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .pain-card {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .tech-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }
    
    .tech-card {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .tech-icon {
        width: 56px;
        height: 56px;
        font-size: 24px;
        margin-bottom: var(--spacing-md);
    }
    
    .tech-card h4 {
        font-size: var(--font-size-sm);
    }
    
    .case-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }
    
    .case-card-body {
        padding: var(--spacing-md);
    }
    
    .case-card-title {
        font-size: var(--font-size-sm);
        min-height: auto;
        -webkit-line-clamp: 2;
    }
    
    .case-card-desc {
        display: none;
    }
    
    .product-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }
    
    .product-card-body {
        padding: var(--spacing-md);
    }
    
    .product-card-title {
        font-size: var(--font-size-sm);
    }
    
    .product-card-apply {
        display: none;
    }
    
    .about-stats {
        gap: var(--spacing-md);
    }
    
    .stat-item {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .stat-label {
        font-size: var(--font-size-xs);
    }
    
    .about-images {
        height: 240px;
        gap: var(--spacing-sm);
    }
    
    .process-section .process-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .process-step {
        flex: 0 0 100%;
        max-width: 300px;
        padding: 0;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 20px;
        margin-bottom: var(--spacing-md);
    }
    
    .guarantee-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }
    
    .guarantee-card {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .guarantee-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .news-featured {
        min-height: 220px;
    }
    
    .news-featured-content {
        padding: var(--spacing-lg);
    }
    
    .news-featured-title {
        font-size: var(--font-size-md);
    }
    
    .news-item {
        padding: var(--spacing-sm) 0;
    }
    
    .news-item-date {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .news-item-date .day {
        font-size: 18px;
    }
    
    .news-item-title {
        font-size: var(--font-size-sm);
    }
    
    .news-item-summary {
        display: none;
    }
    
    .page-banner {
        height: 200px;
    }
    
    .page-banner-title {
        font-size: var(--font-size-2xl);
    }
    
    .page-banner-subtitle {
        font-size: var(--font-size-sm);
        letter-spacing: 2px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
    }
    
    .floating-sidebar {
        display: flex;
        right: 12px;
        top: 90px;
        bottom: auto;
        gap: 8px;
    }
    
    .float-btn {
        width: 48px;
        height: 48px;
    }
    
    .float-icon {
        font-size: 18px;
    }
    
    .float-text {
        font-size: 9px;
    }
    
    .btn-lg {
        padding: 12px 28px;
        font-size: var(--font-size-sm);
    }
    
    .more-btn-wrap {
        margin-top: var(--spacing-xl);
    }
}

/* ========== 576px 以下（小屏手机） ========== */
@media (max-width: 576px) {
    .banner {
        height: 300px;
    }
    
    .banner-title {
        font-size: 22px;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .pain-grid,
    .tech-grid,
    .product-grid,
    .guarantee-grid {
        grid-template-columns: 1fr;
    }
    
    .pagination {
        gap: 6px;
    }
    
    .pagination a,
    .pagination .page-current,
    .pagination .page-ellipsis {
        min-width: 32px;
        height: 34px;
        padding: 0 10px;
        font-size: 12px;
    }
    
    /* 上一页/下一页按钮加宽，避免文字竖排 */
    .pagination a:first-child,
    .pagination a:last-child,
    .pagination .page-ellipsis:first-child,
    .pagination .page-ellipsis:last-child {
        min-width: 72px;
        padding: 0 12px;
        white-space: nowrap;
    }
    
    /* 案例详情页 */
    .case-detail-title {
        font-size: 24px;
    }
    
    .case-info-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-bottom: 32px;
    }
    
    .case-info-card {
        padding: 16px 12px;
    }
    
    .case-info-value {
        font-size: 18px;
    }
    
    .case-info-value.small {
        font-size: 14px;
    }
    
    .case-compare-section {
        padding: 24px 16px;
        margin-bottom: 32px;
    }
    
    .case-compare-title {
        font-size: 20px;
        margin-bottom: 20px;
    }
    
    .case-compare-grid {
        gap: 12px;
    }
    
    .case-compare-img {
        padding: 16px;
        min-height: 160px;
    }
    
    .case-compare-img img {
        max-height: 140px;
    }
    
    .case-desc-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 32px;
    }
    
    .case-desc-card {
        padding: 24px 20px;
    }
    
    .case-doctor-comment {
        padding: 24px 20px;
        margin-bottom: 32px;
    }
    
    /* 资讯详情页 */
    .detail-article {
        padding: 20px;
    }
    .detail-article-title {
        font-size: 22px;
    }
    .detail-article-meta {
        gap: 12px;
        font-size: 13px;
    }
    .detail-article-content {
        font-size: 15px;
        line-height: 1.8;
    }
    .detail-article-content h2 { font-size: 19px; }
    .detail-article-content h3 { font-size: 17px; }
    .detail-article-tip {
        padding: 16px;
        margin-top: 24px;
    }
    .detail-article-tip p { font-size: 14px; }
    .detail-adjacent {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .detail-adjacent-item.right { text-align: left; }

    /* 资讯列表页 */
    .news-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .news-sidebar {
        position: static;
        order: -1;
    }
    
    .news-card {
        flex-direction: column;
        gap: 16px;
        padding: 16px;
    }
    
    .news-card-img {
        width: 100%;
        height: 180px;
    }
    
    .news-card-title {
        font-size: 16px;
    }
    
    .news-card-excerpt {
        font-size: 13px;
    }
    
    .news-cat-tags {
        margin-bottom: 24px;
    }
    
    .news-cat-tag {
        padding: 5px 12px;
        font-size: 13px;
    }
    
    /* 关于我们页 */
    .about-intro {
        grid-template-columns: 1fr;
        gap: 32px;
        margin-bottom: 48px;
    }
    
    .about-intro-title {
        font-size: 24px;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
    
    .about-stat-card {
        padding: 16px 8px;
    }
    
    .about-stat-number {
        font-size: 24px;
    }
    
    .about-stat-label {
        font-size: 12px;
    }
    
    .about-gallery img {
        height: 100px;
    }
    
    .about-team-section {
        margin-bottom: 48px;
    }
    
    .about-team-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .about-team-card {
        padding: 24px 20px;
    }
    
    .about-team-avatar {
        width: 100px;
        height: 100px;
        font-size: 40px;
    }
    
    .about-adv-section {
        padding: 32px 20px;
        margin-bottom: 48px;
    }
    
    .about-adv-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .about-adv-card {
        padding: 20px;
    }
    
    .about-honor-section {
        margin-bottom: 48px;
    }
    
    .about-honor-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .about-honor-card {
        padding: 20px 12px;
    }
    
    .about-honor-icon {
        font-size: 36px;
    }
    
    .about-culture-section {
        margin-bottom: 48px;
    }
    
    .about-culture-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .about-culture-card {
        padding: 24px 16px;
    }
    
    .about-culture-icon {
        font-size: 32px;
    }
    
    .about-cta {
        padding: 32px 20px;
    }
    
    .about-cta h2 {
        font-size: 20px;
    }
    
    .about-cta p {
        font-size: 14px;
    }
}

/* ========== 小屏手机（≤480px）案例详情微调 ========== */
@media (max-width: 480px) {
    .case-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-info-label {
        font-size: 12px;
    }
    
    .case-info-value {
        font-size: 16px;
    }
    
    .case-info-value.small {
        font-size: 13px;
    }
    
    .case-compare-grid {
        grid-template-columns: 1fr;
    }
    
    .case-compare-img {
        min-height: 180px;
    }
    
    .case-compare-img img {
        max-height: 160px;
    }
}

/* ========== 移动端菜单 ========== */
@media (max-width: 992px) {
    .main-nav.mobile-active {
        display: block;
        position: fixed;
        top: var(--header-height);
        right: 0;
        bottom: 0;
        width: 280px;
        max-width: 80%;
        background-color: var(--color-bg);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
        z-index: 999;
        padding: var(--spacing-lg);
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform var(--transition-base);
    }
    
    .main-nav.mobile-active.show {
        transform: translateX(0);
    }
    
    .main-nav.mobile-active .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        width: 100%;
    }
    
    .main-nav.mobile-active .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-border-light);
    }
    
    .main-nav.mobile-active .nav-item a {
        padding: var(--spacing-md) 0;
        font-size: var(--font-size-md);
    }
    
    .main-nav.mobile-active .nav-item a::after {
        display: none;
    }
}

/* ========== 打印样式 ========== */
@media print {
    .site-header,
    .site-footer,
    .floating-sidebar,
    .cta-bar,
    .banner-arrow,
    .banner-dots {
        display: none !important;
    }
    
    body {
        padding-bottom: 0;
    }
}

/* ========== 减少动效（无障碍） ========== */
@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;
    }
}

/* ========= 联系我们页移动端适配 ========= */
@media (max-width: 768px) {
    .contact-cards {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 40px;
    }

    .contact-card {
        padding: 24px 20px;
    }

    .contact-card-icon {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }

    .contact-card-title {
        font-size: 16px;
    }

    .contact-card-phone.primary {
        font-size: 18px;
    }

    .contact-card-phone.secondary {
        font-size: 15px;
    }

    .contact-wechat-qr {
        width: 100px;
        height: 100px;
    }

    .contact-cta-banner {
        padding: 32px 20px;
        margin-bottom: 40px;
    }

    .contact-cta-desc {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .contact-cta-btns {
        flex-direction: column;
        gap: 12px;
    }

    .contact-cta-btn {
        width: 100%;
    }

    .contact-time-box {
        padding: 28px 20px;
    }

    .contact-time-list {
        gap: 24px;
        flex-direction: column;
    }

    .contact-time-item .value {
        font-size: 16px;
    }
}

/* ========= 产品详情页移动端适配 ========= */
@media (max-width: 768px) {
    .pd-main {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-bottom: 40px;
    }

    .pd-image-box {
        padding: 24px;
        min-height: auto;
        order: 1;
    }

    .pd-main-image {
        max-height: 280px;
    }

    .pd-info {
        order: 2;
    }

    .pd-title {
        font-size: 24px;
    }

    .pd-apply {
        font-size: 15px;
    }

    .pd-feature-item {
        font-size: 14px;
    }

    .pd-btns {
        flex-direction: column;
    }

    .pd-btns .btn {
        width: 100%;
    }

    .pd-section-title {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .pd-params {
        margin-bottom: 40px;
    }

    .pd-params-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .pd-param-item {
        padding: 16px 12px;
    }

    .pd-param-label {
        font-size: 12px;
    }

    .pd-param-value {
        font-size: 14px;
    }

    .pd-suitable {
        padding: 28px 16px;
        margin-bottom: 40px;
    }

    .pd-suitable-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .pd-suitable-item {
        padding: 14px;
    }

    .pd-process {
        margin-bottom: 40px;
    }

    .pd-process-steps {
        flex-direction: column;
        gap: 16px;
        align-items: center;
    }

    .pd-process-step {
        width: 100%;
        max-width: 320px;
    }

    .pd-process-num {
        width: 48px;
        height: 48px;
        font-size: 18px;
    }

    .pd-process-arrow {
        display: none;
    }

    .pd-cta {
        padding: 28px 20px;
    }

    .pd-cta-btns {
        flex-direction: column;
    }

    .pd-cta-btns .btn {
        width: 100%;
    }

    .pd-related {
        margin-top: 40px;
    }

    .pd-related-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

/* ========= 产品列表页移动端适配 ========= */
@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 12px;
    }

    .product-card-title {
        font-size: 15px !important;
        margin-bottom: 6px !important;
    }

    .product-card-apply {
        font-size: 12px !important;
    }

    .product-card-body {
        padding: 12px !important;
    }

    .product-card-tag {
        font-size: 11px !important;
        padding: 3px 8px !important;
    }

    .product-detail-btn {
        padding: 6px 14px !important;
        font-size: 12px !important;
        height: auto !important;
        min-width: auto !important;
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr !important;
    }
}