/* ============================================================
 * AKSRT Header Slider — v5.0 Zibll-Aligned
 *
 * 三层架构：
 * - Layer 1: Swiper 全宽轮播背景
 * - Layer 2: 搜索覆盖模块
 * - Layer 3: 图标卡片网格覆盖
 *
 * 对标 zibll 的 new-swiper 体系：
 * - CSS 变量高度控制 (--pc-height / --m-height)
 * - data-* 属性驱动配置
 * - 缩略图分页器、视差、懒加载
 * ============================================================ */

/* ============================================================
 * .new-swiper 基础样式（对标 zibll）
 * ============================================================ */
.aksrt-slider-wrapper {
    position: relative;
    margin-bottom: 20px;
}

.new-swiper {
    position: relative;
    overflow: hidden;
    --pc-height: auto;
    --m-height: auto;
}

.new-swiper .swiper-wrapper {
    height: var(--pc-height);
}

.new-swiper .swiper-slide {
    position: relative;
    overflow: hidden;
}

.new-swiper .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 懒加载预加载器 */
.new-swiper .swiper-lazy-preloader {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 42px;
    height: 42px;
    margin: -21px 0 0 -21px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: aksrt-swiper-spin 0.8s linear infinite;
}

@keyframes aksrt-swiper-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 懒加载图片 */
.new-swiper .swiper-lazy {
    opacity: 0;
    transition: opacity 0.3s;
}

.new-swiper .swiper-lazy.lazyloaded,
.new-swiper .swiper-slide-visible .swiper-lazy {
    opacity: 1;
}

/* 缩略图分页器 */
.new-swiper .pagination-thumbnail-item {
    width: 60px;
    height: 40px;
    border-radius: 4px;
    overflow: hidden;
    opacity: 0.5;
    transition: opacity 0.3s, border-color 0.3s;
    border: 2px solid transparent;
    cursor: pointer;
    display: inline-block;
}

.new-swiper .pagination-thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.new-swiper .pagination-thumbnail-item-active {
    opacity: 1;
    border-color: #fff;
}

/* 视差层 */
.new-swiper [data-swiper-parallax] {
    transition: none;
}

/* 比例高度模式 */
.new-swiper.scale-height .swiper-wrapper {
    height: 0;
    padding-bottom: var(--scale-ratio, 45%);
}

/* 幻灯片文字覆盖层 */
.aksrt-slide-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    width: calc(100% - 32px);
    max-width: 920px;
    text-align: center;
    color: #fff;
}

.aksrt-slide-text__title {
    font-family: var(--font-display, var(--font-ui));
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 700;
    margin: 0 0 12px;
    line-height: 1.2;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.aksrt-slide-text__desc {
    font-size: clamp(0.9rem, 1.4vw, 1.125rem);
    margin: 0;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

/* 移动端高度 */
@media (max-width: 767px) {
    .new-swiper .swiper-wrapper {
        height: var(--m-height);
    }
}

/* ============================================================
 * Container — 三层叠加的父容器
 * ============================================================ */
.header-components-container {
    position: relative;
    isolation: isolate; /* 创建独立堆叠上下文，内部 z-index 不外泄 */
    width: 100%;
    margin-bottom: 20px;
}

/* ============================================================
 * Device Visibility for Hero/Banner slides
 * ============================================================ */

/* PC-only slides: hidden on mobile */
@media (max-width: 767.98px) {
    .hero-slide--pc-only,
    .banner-slide--pc-only {
        display: none !important;
    }
}

/* Mobile-only slides: hidden on PC */
@media (min-width: 768px) {
    .hero-slide--mobile-only,
    .banner-slide--mobile-only {
        display: none !important;
    }
}