/* ========== 面包屑区域视频背景 ========== */
.breadcrumb-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 1;
}

.breadcrumb-area {
    position: relative;
    min-height: 500px;
    overflow: hidden;
    background: var(--text-primary); /* 使用主题深色作为备用背景 */
}

/* 确保遮罩层在视频之上 */
.breadcrumb-area::after {
    z-index: 2;
    background: var(--primary-alpha-20); /* 使用主题色透明遮罩 */
}

/* 确保文字在最上层 */
.breadcrumb-item {
    position: relative;
    z-index: 3;
}

/* ========== 导航栏透明度调整 ========== */
.main-header-area {
    background: rgba(251, 251, 251, 0.95);
    z-index:10000;
}

/* ========== 文字颜色修正 ========== */
.text-night-rider *,
.box-counter > * {
    color: var(--text-white) !important;
}

/* ========== 视差背景优化 ========== */
.breadcrumb-area [data-bg-image]:not(.bg-pattern) {
    background-attachment: fixed;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
}

/* 移动端禁用 fixed 避免性能问题 */
@media (max-width: 768px) {
    [data-bg-image]:not(.bg-pattern) {
        background-attachment: scroll;
    }
}

/* ========== Material Parallax 组件 ========== */
.parallax-container {
    position: relative;
    overflow: hidden;
    background-position: center center;
    background-size: cover;
}

.parallax-content {
    position: relative;
    z-index: 2;
}

.material-parallax {
    position: absolute;
    top: 0;
    left: -1px;
    right: -1px;
    bottom: 0;
    z-index: 0;
    background-position: center center;
    background-size: cover;
}

.material-parallax img {
    display: none;
    position: absolute;
    left: 50%;
    bottom: 0;
    min-width: 101%;
    min-height: 101%;
    max-width: none;
    transform: translate3d(-50%, 0, 0);
}

/* iOS 设备优化 */
.ipad .parallax-container,
.iphone .parallax-container {
    background-attachment: scroll !important;
}

/* ========== 关于页面内容优化 ========== */
.about-commitments {
    font-size: 16px;
    line-height: 1.7;
}

.about-commitments li {
    padding: 12px 0;
    border-left: 4px solid var(--primary-color);
    padding-left: 20px;
    margin-bottom: 15px;
    background: var(--primary-alpha-10);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: var(--transition-normal);
}

.about-commitments li:hover {
    background: var(--primary-alpha-20);
    transform: translateX(4px);
}

.about-commitments strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* ========== 企业里程碑时间线 ========== */
.milestone-area {
    overflow: hidden;
    position: relative;
    background: var(--bg-section);
}

/* 中心时间线 */
.milestone-slider {
    position: relative;
    padding: 40px 0;
}

.milestone-slider::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 3px;
    background: linear-gradient(to right, transparent, var(--border-medium) 20%, var(--border-medium) 80%, transparent);
    z-index: 1;
    transform: translateY(-50%);
}

/* Swiper 幻灯片设置 */
.milestone-slider .swiper-slide {
    width: auto !important;
    padding: 0 20px;
    z-index: 2;
    position: relative;
}

/* 里程碑卡片 */
.milestone-card {
    width: 260px;
    min-height: 180px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: var(--transition-normal);
    position: relative;
    border: 2px solid transparent;
}

.milestone-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
    background: var(--bg-hover);
}

/* 日期样式 */
.milestone-date {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 16px;
    font-family: var(--bs-font-sans-serif);
}

/* 描述文字 */
.milestone-desc {
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-secondary);
    margin: 0;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 时间点圆圈 */
.milestone-card::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -12px;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    border: 4px solid var(--primary-color);
    border-radius: 50%;
    background: var(--bg-white);
    transition: var(--transition-normal);
    z-index: 3;
}

.milestone-card:hover::after {
    background: var(--primary-color);
    transform: translateX(-50%) scale(1.2);
    box-shadow: 0 0 0 4px var(--primary-alpha-20);
}

/* 导航箭头 */
.milestone-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.milestone-nav i {
    font-size: 20px;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.milestone-nav:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-lg);
}

.milestone-nav:hover i {
    color: var(--text-white);
}

.milestone-nav.prev {
    left: -80px;
}

.milestone-nav.next {
    right: -80px;
}

/* 状态指示 */
.milestone-status {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 8px;
    background: var(--accent-color);
    color: var(--text-white);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.milestone-status.milestone {
    background: var(--primary-color);
}

.milestone-status.achievement {
    background: var(--accent-color);
}

.milestone-status.development {
    background: var(--warning-color);
}

/* ========== 响应式设计 ========== */

/* 平板设备 */
@media (max-width: 1199.98px) {
    .milestone-nav.prev {
        left: -60px;
    }

    .milestone-nav.next {
        right: -60px;
    }

    .milestone-card {
        width: 240px;
        min-height: 170px;
        padding: 25px 18px;
    }

    .milestone-date {
        font-size: 22px;
    }
}

/* 移动设备 */
@media (max-width: 991.98px) {
    .milestone-nav {
        display: none;
    }

    .milestone-slider .swiper-slide {
        padding: 0 15px;
    }

    .milestone-card {
        width: 220px;
        min-height: 160px;
        padding: 20px 15px;
    }

    .milestone-date {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .milestone-desc {
        font-size: 14px;
        -webkit-line-clamp: 3;
    }

    .breadcrumb-area {
        min-height: 400px;
    }

    .main-header-area {
        background: var(--bg-white);
        box-shadow: var(--shadow-sm);
    }
}

/* 小屏手机 */
@media (max-width: 575.98px) {
    .milestone-card {
        width: 200px;
        min-height: 150px;
        padding: 18px 12px;
    }

    .milestone-date {
        font-size: 18px;
    }

    .milestone-desc {
        font-size: 13px;
        color: var(--text-muted);
    }

    .about-commitments li {
        padding-left: 15px;
        font-size: 15px;
    }

    .breadcrumb-area {
        min-height: 350px;
    }
}

/* ========== 动画增强 ========== */
@keyframes slideInUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.milestone-card {
    animation: slideInUp 0.6s ease-out;
}

/* 为不同的卡片添加延迟动画 */
.milestone-slider .swiper-slide:nth-child(odd) .milestone-card {
    animation-delay: 0.1s;
}

.milestone-slider .swiper-slide:nth-child(even) .milestone-card {
    animation-delay: 0.2s;
}

/* ========== 分页器样式（移动端）========== */
.milestone-slider .swiper-pagination {
    position: relative;
    margin-top: 30px;
}

.milestone-slider .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: var(--border-medium);
    opacity: 1;
    transition: var(--transition-normal);
}

.milestone-slider .swiper-pagination-bullet-active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* ========== 加载状态 ========== */
.milestone-card.loading {
    background: var(--bg-section);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* ========== 高对比度模式支持 ========== */
@media (prefers-contrast: high) {
    .milestone-card {
        border: 2px solid var(--text-primary);
    }

    .milestone-nav {
        border: 2px solid var(--text-primary);
    }

    .about-commitments li {
        border-left-width: 6px;
    }
}

/* ========== 深色模式适配 ========== */
@media (prefers-color-scheme: dark) {
    .breadcrumb-area {
        background: var(--bg-light);
    }

    .milestone-area {
        background: var(--bg-white);
    }
}

/* ========== 滚动优化 ========== */
.milestone-slider {
    scroll-behavior: smooth;
}

/* ========== 交互反馈 ========== */
.milestone-card:active {
    transform: translateY(-4px) scale(0.98);
}

.milestone-nav:active {
    transform: translateY(-50%) scale(0.95);
}

/* ========== 可访问性增强 ========== */
.milestone-card:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 4px;
}

.milestone-nav:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 减少动画（用户偏好设置） */
@media (prefers-reduced-motion: reduce) {
    .milestone-card,
    .milestone-nav,
    .about-commitments li {
        animation: none;
        transition: none;
    }

    .milestone-card:hover {
        transform: none;
    }
}