/* ===== 响应式样式 - 智影·全景通 ===== */

/* 抽屉式导航 - 移动端 + 平板共用样式（≤1024px） */
@media (max-width: 1024px) {
    /* 汉堡按钮显示 */
    .nav-toggle {
        display: flex;
        z-index: 1002;
    }

    /* 遮罩层 */
    .nav-overlay {
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.5);
        backdrop-filter: blur(2px);
        -webkit-backdrop-filter: blur(2px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
        z-index: 999;
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* 抽屉式菜单 - 平板 80% 宽 */
    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 80%;
        max-width: 360px;
        background: #ffffff;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 0;
        padding: 80px 0 24px;
        box-shadow: -4px 0 24px rgba(15, 23, 42, 0.15);
        transform: translateX(100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
        z-index: 1000;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    /* 关闭按钮 */
    .nav-close {
        position: absolute;
        top: 16px;
        right: 16px;
        width: 44px;
        height: 44px;
        border: none;
        background: transparent;
        color: var(--color-text);
        font-size: 32px;
        line-height: 1;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-sm);
        transition: background 0.2s ease, color 0.2s ease;
    }

    .nav-close:hover,
    .nav-close:focus {
        background: var(--color-bg);
        color: var(--color-primary);
    }

    /* 菜单项 - 抽屉里必须是 block 才能独占一行 */
    .nav-menu .nav-link {
        display: block;
        width: 100%;
        box-sizing: border-box;
        font-size: 17px;
        font-weight: 500;
        padding: 18px 28px;
        margin: 0;
        color: var(--color-text);
        border-left: 3px solid transparent;
        background: transparent;
        transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
        position: relative;
        text-decoration: none;
    }

    .nav-menu .nav-link:hover {
        background: var(--color-bg);
        color: var(--color-primary);
    }

    .nav-menu .nav-link.active {
        color: var(--color-primary);
        background: rgba(37, 99, 235, 0.06);
        border-left-color: var(--color-primary);
        font-weight: 600;
    }

    .nav-menu .nav-link.active::after {
        display: none !important;
    }

    .nav-menu .nav-link::after,
    .nav-menu .nav-link::before {
        display: none !important;
        content: none !important;
    }

    /* 联系我们按钮（在抽屉里变成普通菜单项） */
    .nav-link-cta {
        background: transparent !important;
        color: var(--color-text) !important;
        padding: 16px 28px !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        margin: 0;
    }

    .nav-link-cta:hover {
        background: var(--color-bg) !important;
        color: var(--color-primary) !important;
        transform: none !important;
    }
}

/* 平板：768px - 1024px */
@media (max-width: 1024px) and (min-width: 769px) {
    :root {
        --container-padding: 20px;
    }

    .hero {
        padding: 100px var(--container-padding) 60px;
    }

    .hero-title {
        font-size: 44px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .section-title {
        font-size: 32px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid,
    .cores-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantage-card-highlight,
    .core-card-highlight {
        transform: none;
    }

    .advantage-card-highlight:hover,
    .core-card-highlight:hover {
        transform: translateY(-8px);
    }

    .cases-preview-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-timeline {
        flex-wrap: wrap;
    }

    .process-step {
        flex: 1 1 calc(33% - 12px);
        min-width: 140px;
    }

    .process-arrow {
        display: none;
    }

    .channels-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .channel-detail {
        grid-template-columns: 100px 1fr;
    }

    .loop-flow,
    .path-flow {
        flex-wrap: wrap;
        gap: 16px;
        justify-content: center;
    }

    .loop-step,
    .path-step {
        flex: 1 1 calc(33% - 16px);
        min-width: 140px;
    }

    .loop-arrow,
    .path-arrow {
        display: none;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .pricing-card-highlight {
        transform: none;
    }

    .pricing-card-highlight:hover {
        transform: translateY(-6px);
    }

    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .detail-block {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .section-detail-alt .detail-block {
        direction: ltr;
    }

    .detail-image {
        max-height: 400px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .cta-title {
        font-size: 30px;
    }

    .page-banner-title {
        font-size: 38px;
    }

    .page-banner {
        padding: 100px var(--container-padding) 60px;
    }
}

/* 手机：< 768px */
@media (max-width: 768px) {
    :root {
        --container-padding: 16px;
        --space-lg: 32px;
        --space-xl: 56px;
    }

    body {
        font-size: 15px;
    }

    /* 抽屉式菜单 - 手机端宽度全屏 */
    .nav-menu {
        width: 100%;
        max-width: 100%;
        padding: 72px 0 24px;
    }

    .nav-menu .nav-link {
        padding: 18px 24px;
        font-size: 16px;
    }

    .nav-close {
        top: 12px;
        right: 12px;
    }

    /* Hero */
    .hero {
        min-height: 80vh;
        padding: 90px var(--container-padding) 50px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 17px;
    }

    .hero-desc {
        font-size: 15px;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
    }

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

    .hero-scroll {
        display: none;
    }

    /* Section */
    .section {
        padding: 56px 0;
    }

    .section-title {
        font-size: 26px;
    }

    .section-subtitle {
        font-size: 15px;
    }

    /* Page Banner */
    .page-banner {
        padding: 90px var(--container-padding) 50px;
    }

    .page-banner-title {
        font-size: 28px;
    }

    .page-banner-subtitle {
        font-size: 16px;
    }

    /* Stats */
    .stats {
        margin-top: -40px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .stat-item {
        padding: 24px 12px;
    }

    .stat-number {
        font-size: 30px;
    }

    .stat-label {
        font-size: 12px;
    }

    /* Advantages / Cores */
    .advantages-grid,
    .cores-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .advantage-card,
    .core-card {
        padding: 32px 24px;
    }

    /* Cases Preview */
    .cases-preview-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* Cases Grid */
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* Process */
    .process-timeline {
        flex-direction: column;
        gap: 16px;
    }

    .process-step {
        width: 100%;
    }

    /* Channels */
    .channels-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .channel-card {
        padding: 24px 16px;
    }

    .channel-emoji {
        font-size: 36px;
    }

    /* Channel Details */
    .channel-detail {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 24px 20px;
    }

    .channel-detail-icon {
        margin: 0 auto;
    }

    /* Loop Flow & Path Flow */
    .loop-flow,
    .path-flow {
        flex-direction: column;
        gap: 16px;
    }

    .loop-step,
    .path-step {
        width: 100%;
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .pricing-card {
        padding: 32px 24px;
    }

    .benefits-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    /* Equipment */
    .equipment-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Detail */
    .detail-text {
        padding: 0;
    }

    .detail-title {
        font-size: 26px;
    }

    .detail-lead {
        font-size: 16px;
    }

    .channel-list {
        gap: 8px;
    }

    .channel-pill {
        font-size: 13px;
        padding: 6px 14px;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-form-wrap,
    .contact-info-wrap {
        padding: 24px 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    /* Filter Tabs */
    .filter-tabs {
        gap: 8px;
    }

    .filter-tab {
        padding: 8px 16px;
        font-size: 13px;
    }

    /* CTA */
    .section-cta,
    .section-cta-strong {
        padding: 56px 0;
    }

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

    .cta-desc {
        font-size: 15px;
        margin-bottom: 24px;
    }

    .cta-buttons {
        flex-direction: column;
        max-width: 320px;
        margin: 0 auto;
        width: 100%;
    }

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

    /* Footer */
    .footer {
        padding: 40px 0 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    /* Modal */
    .case-modal {
        padding: 10px;
    }

    .case-modal-content {
        max-width: 100%;
        max-height: 95vh;
    }

    .case-modal-image {
        aspect-ratio: 9 / 16;
    }

    .case-modal-body {
        padding: 20px 20px 24px;
    }

    .case-modal-body h2 {
        font-size: 20px;
    }

    .case-modal-actions {
        flex-direction: row;
    }

    .case-modal-actions .btn {
        flex: 1;
    }

    /* Intro */
    .intro-box {
        padding: 28px 20px;
    }

    .intro-text {
        font-size: 15px;
    }

    /* 品牌简介 - 方案2 垂直流程式 平板 */
    .flow-item {
        padding: 32px 24px;
    }

    .flow-icon {
        width: 48px;
        height: 48px;
    }

    .flow-icon svg {
        width: 24px;
        height: 24px;
    }

    .flow-title {
        font-size: 20px;
    }

    .flow-arrow {
        padding: 12px 0;
    }

    .flow-arrow svg {
        width: 28px;
        height: 28px;
    }
}

/* 小屏手机：< 480px */
@media (max-width: 480px) {
    .hero-title {
        font-size: 26px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .section-title {
        font-size: 22px;
    }

    .page-banner-title {
        font-size: 24px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .stat-item {
        padding: 18px 10px;
    }

    .stat-number {
        font-size: 26px;
    }

    /* 品牌简介 - 方案2 垂直流程式 手机 */
    .section-intro {
        padding: 40px 0;
    }

    .flow-card {
        padding: 0 12px;
    }

    .flow-item {
        padding: 24px 20px;
        border-radius: 16px;
        gap: 16px;
    }

    .flow-icon {
        width: 44px;
        height: 44px;
        min-width: 44px;
    }

    .flow-icon svg {
        width: 22px;
        height: 22px;
    }

    .flow-title {
        font-size: 17px;
        text-align: left;
    }

    .flow-arrow {
        padding: 10px 0;
    }

    .flow-arrow svg {
        width: 24px;
        height: 24px;
    }
}