/* Banner 轮播 */
.hero-section {
    position: relative;
    height: var(--banner-h);
    width: 100%;
    min-width: 0;
    min-height: var(--min-page-h);
    overflow: hidden;
}

html.md-browser-zoom .slide-content h2 {
    font-size: calc(40px * var(--md-zoom-layout-scale));
    letter-spacing: calc(10px * var(--md-zoom-layout-scale));
}

html.md-browser-zoom .slide-content p {
    font-size: calc(14px * var(--md-zoom-layout-scale));
    letter-spacing: calc(8px * var(--md-zoom-layout-scale));
}

/* 桌面首页：保持 banner 尺寸，footer 不再参与挤压首屏视觉主体 */
html:not(.md-mobile-layout) body.home-page .hero-section {
    flex: 0 0 auto;
    height: var(--banner-h);
    min-height: calc(var(--min-page-h) + var(--md-nav-height));
}

.slide-layer {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.5s ease;
    z-index: 10;
}

.slide-layer.active {
    opacity: 1;
    z-index: 20;
}

.slide-layer img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.65);
    transform: scale(1.1);
}

.md-news-banner-slide {
    background: #071018;
    overflow: hidden;
}

.md-news-banner-slide::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--md-news-banner-bg);
    background-position: center;
    background-size: cover;
    filter: blur(22px) brightness(0.76) saturate(0.98);
    opacity: 0.58;
    transform: scale(1.2);
    z-index: 0;
    pointer-events: none;
}

.md-news-banner-slide::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--md-news-banner-bg);
    background-position: center;
    background-size: cover;
    filter: blur(22px) brightness(0.78) saturate(0.98);
    opacity: 0.66;
    transform: scale(1.2);
    z-index: 2;
    pointer-events: none;
    -webkit-mask-image: linear-gradient(
        to right,
        #000 0%,
        rgba(0, 0, 0, 0.96) 7%,
        rgba(0, 0, 0, 0.72) 16%,
        rgba(0, 0, 0, 0.34) 27%,
        rgba(0, 0, 0, 0.08) 38%,
        transparent 46%,
        transparent 54%,
        rgba(0, 0, 0, 0.08) 62%,
        rgba(0, 0, 0, 0.34) 73%,
        rgba(0, 0, 0, 0.72) 84%,
        rgba(0, 0, 0, 0.96) 93%,
        #000 100%
    );
    mask-image: linear-gradient(
        to right,
        #000 0%,
        rgba(0, 0, 0, 0.96) 7%,
        rgba(0, 0, 0, 0.72) 16%,
        rgba(0, 0, 0, 0.34) 27%,
        rgba(0, 0, 0, 0.08) 38%,
        transparent 46%,
        transparent 54%,
        rgba(0, 0, 0, 0.08) 62%,
        rgba(0, 0, 0, 0.34) 73%,
        rgba(0, 0, 0, 0.72) 84%,
        rgba(0, 0, 0, 0.96) 93%,
        #000 100%
    );
}

.md-news-banner-slide img[data-md-news-banner-img] {
    position: relative;
    width: 100%;
    max-width: 100%;
    height: 100%;
    z-index: 1;
    object-fit: contain;
    object-position: center center;
    transform: scale(1.06);
    -webkit-mask-image: none;
    mask-image: none;
}

.slide-layer.active img,
.slide-layer.fading-out img {
    animation: bannerZoom 6s linear forwards;
}

.slide-layer.fading-out img {
    animation-play-state: paused;
}

@keyframes bannerZoom {
    0% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.hero-section.is-paused .slide-layer.active img {
    animation-play-state: paused;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 30;
    text-align: center;
    width: 100%;
    /* VI: Banner 始终浅色字（不继承 style.css 的 body 正文色） */
    color: #ffffff;
}

.slide-content a {
    color: inherit;
}

.banner-link {
    display: inline-block;
    color: inherit;
    text-decoration: none;
}

/* 继承 MD Site：中文普惠体、英文/数字 Inter 子集（unicode-range） */
.slide-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 0.6rem;
    color: #ffffff;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(30px);
    transition: 0.8s 0.5s forwards;
}

.slide-layer.active .slide-content h2 {
    opacity: 1;
    transform: translateY(0);
}

.slide-content p {
    font-size: 0.875rem;
    color: var(--md-cyan);
    letter-spacing: 0.5rem;
    text-transform: uppercase;
}

.indicator-group {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    display: flex;
    gap: 15px;
}

.indicator-bar-wrapper {
    padding: 15px 0;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.indicator-bar {
    width: 40px;
    height: 2px;
    background: rgba(255, 255, 255, 0.25);
    transition: var(--anim-fast);
}

.indicator-bar-wrapper.active .indicator-bar {
    background: var(--md-cyan);
    width: 80px;
    box-shadow: 0 0 15px var(--md-cyan);
}

.indicator-bar-wrapper:hover .indicator-bar {
    background: rgba(255, 255, 255, 0.6);
}

@media (max-width: 768px) {
    .hero-section {
        height: auto;
        min-width: 100%;
        min-height: 0;
        overflow: visible;
        display: flex;
        flex-direction: column;
        gap: 12px;
        padding: 12px 12px 0;
    }

    /* 首页 banner 上间距由 #banner-holder 承担，避免与顶栏留白叠成双份 */
    body.home-page .hero-section {
        padding-top: 0;
    }

    .slide-layer {
        position: relative;
        inset: auto;
        opacity: 1 !important;
        z-index: auto;
        border-radius: 14px;
        overflow: hidden;
        min-height: 210px;
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
    }

    .slide-layer img {
        width: 100%;
        height: 210px;
        object-fit: cover;
        filter: brightness(0.72);
        transform: none !important;
        animation: none !important;
    }

    .slide-content {
        left: 16px;
        right: 16px;
        bottom: 16px;
        top: auto;
        width: auto;
        transform: none;
        text-align: left;
    }

    .slide-content h2 {
        font-size: clamp(1.25rem, 6vw, 1.65rem);
        letter-spacing: 0.08em;
        margin-bottom: 8px;
        opacity: 1;
        transform: none;
    }

    .slide-content p {
        font-size: clamp(0.8rem, 3.2vw, 0.95rem);
        letter-spacing: 0.08em;
    }

    html.md-browser-zoom .slide-content h2 {
        font-size: calc(22px * var(--md-zoom-layout-scale));
    }

    html.md-browser-zoom .slide-content p {
        font-size: calc(13px * var(--md-zoom-layout-scale));
    }

    .indicator-group {
        display: none;
    }

    /* 首页 Banner 卡片缝透出 body 底色（纯白页时缝为白） */
    body.home-page .slide-layer img,
    body.has-mobile-shell.home-page .slide-layer img {
        position: relative;
        z-index: 0;
    }

    body.home-page .slide-content,
    body.has-mobile-shell.home-page .slide-content {
        z-index: 1;
        color: #ffffff;
    }

    body.home-page .slide-content a,
    body.has-mobile-shell.home-page .slide-content a {
        color: inherit;
    }
}

/* 宽视口 + forceMobile：与上列窄屏 Banner 布局一致（避免仅靠 coarse 指针在桌面宽屏误套用） */
html.md-mobile-layout .hero-section {
    height: auto;
    min-width: 100%;
    min-height: 0;
    overflow: visible;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 12px 12px 0;
}

html.md-mobile-layout body.home-page .hero-section {
    padding-top: 0;
}

html.md-mobile-layout .slide-layer {
    position: relative;
    inset: auto;
    opacity: 1 !important;
    z-index: auto;
    border-radius: 14px;
    overflow: hidden;
    min-height: 210px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
}

html.md-mobile-layout .slide-layer img {
    width: 100%;
    height: 210px;
    object-fit: cover;
    filter: brightness(0.72);
    transform: none !important;
    animation: none !important;
}

html.md-mobile-layout .slide-content {
    left: 16px;
    right: 16px;
    bottom: 16px;
    top: auto;
    width: auto;
    transform: none;
    text-align: left;
}

html.md-mobile-layout .slide-content h2 {
    font-size: clamp(1.25rem, 6vw, 1.65rem);
    letter-spacing: 0.08em;
    margin-bottom: 8px;
    opacity: 1;
    transform: none;
}

html.md-mobile-layout .slide-content p {
    font-size: clamp(0.8rem, 3.2vw, 0.95rem);
    letter-spacing: 0.08em;
}

html.md-browser-zoom.md-mobile-layout .slide-content h2 {
    font-size: calc(22px * var(--md-zoom-layout-scale));
}

html.md-browser-zoom.md-mobile-layout .slide-content p {
    font-size: calc(13px * var(--md-zoom-layout-scale));
}

html.md-mobile-layout .indicator-group {
    display: none;
}

html.md-mobile-layout body.home-page .slide-layer img {
    position: relative;
    z-index: 0;
}

html.md-mobile-layout body.home-page .slide-content {
    z-index: 1;
    color: #ffffff;
}

html.md-mobile-layout body.home-page .slide-content a {
    color: inherit;
}