/* ============================================================
   index.css — 首页（index.html）特有样式
   包含：轮播图动画、Banner、首页专属组件样式
   ============================================================ */

/* 轮播图动画 */
.slide {
    transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide.active {
    opacity: 1;
}

.slide:not(.active) {
    opacity: 0;
    pointer-events: none;
}

.slide.active .banner-content {
    animation: bannerContentIn 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes bannerContentIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner-pic {
    min-width: 35rem;
    max-width: 35rem;
    height: 19rem;
    box-sizing: border-box;
    margin-top: -3rem;
}

.bgban,
.bgban2 {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    min-width: 100%;
    object-fit: cover;
    object-position: center;
}

/* 轮播背景遮罩 - 深色科技感 */
.banner-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background:
        linear-gradient(105deg,
            rgba(0, 0, 0, 0.78) 0%,
            rgba(0, 0, 0, 0.45) 40%,
            rgba(0, 15, 35, 0.25) 70%,
            transparent 100%),
        linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.4) 100%);
}

.banner-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(90deg, rgba(6, 182, 212, 0.03) 0%, transparent 25%);
}

/* 轮播标题 - 科技感装饰 */
.banner-title {
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #fff;
    text-shadow: 0 0 40px rgba(6, 182, 212, 0.15), 0 2px 20px rgba(0, 0, 0, 0.5);
    margin-bottom: 1rem;
    position: relative;
    padding-left: 0;
}

.banner-desc {
    font-weight: 400;
    line-height: 1.95;
    color: rgba(226, 232, 240, 0.92);
    text-align: left;
    text-shadow: 0 1px 12px rgba(0, 0, 0, 0.4);
    letter-spacing: 0.04em;
    font-size: 0.95rem;
}

@media (min-width: 768px) {
    .banner-desc {
        font-size: 1.05rem;
    }
}

/* 浅色背景图上的文字（保留深色字时用） */
.banner-title-on-light {
    font-weight: 800;
    letter-spacing: 0.03em;
    color: #0f2847;
    text-shadow:
        0 1px 2px rgba(255, 255, 255, 0.8),
        0 2px 8px rgba(0, 0, 0, 0.08),
        0 4px 16px rgba(0, 0, 0, 0.06);
}

.banner-desc-on-light {
    font-weight: 500;
    line-height: 1.65;
    color: #1e3a5f;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
}

.bgc {
    background-color: #374151;
}

.bgban1 {
    background-image: url(../imgs/ce1.webp);
    left: 0;
}

.bantxt {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 100px 48px 60px 48px;
    box-sizing: border-box;
    margin-right: 10%;
}

.bantxt3 {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(6px);
    background: rgba(255, 255, 255, 0.10);
    box-shadow: inset -2px -3px 0 0 #0B1258, inset 2px 3px 0 0 rgba(136, 188, 249, 0.41);
    border-radius: 40px;
    padding: 32px 30px 48px 30px;
    box-sizing: border-box;
    margin-right: 10%;
}

.bantxt4 {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(6px);
    background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.35) 100%);
    box-shadow: inset -2px -3px 0 0 rgba(89, 143, 242, 0.53), inset 2px 3px 0 0 rgba(255, 255, 255, 0.40);
    border-radius: 40px;
    padding: 32px 30px 32px 30px;
    box-sizing: border-box;
    margin-right: 10%;
}

/* 轮播内文字区与页面 container 一致 */
#home .banner-text-wrap {
    margin-left: 0;
    margin-right: auto;
    padding-left: 1.25rem;
    position: relative;
}

#home .banner-text-wrap.bantxt,
#home .banner-text-wrap.bantxt4 {
    padding-left: 1.25rem;
}

@media (min-width: 768px) {
    #home .banner-text-wrap.bantxt,
    #home .banner-text-wrap.bantxt4 {
        padding-left: 1.5rem;
        padding-right: 2rem;
    }
}

@media (min-width: 1024px) {
    #home .banner-text-wrap.bantxt,
    #home .banner-text-wrap.bantxt4 {
        padding: 3rem 2.5rem 3rem 1.75rem;
    }
}

#home .bantxt4.banner-text-wrap {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(34, 211, 238, 0.18);
    border-radius: 16px;
    box-shadow: 0 0 32px rgba(6, 182, 212, 0.1), 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* 轮播控件 - 极简 */
.slider-prev,
.slider-next {
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.slider-prev:hover,
.slider-next:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

.slider-dot {
    transition: background 0.3s ease;
}

.slider-dot.active {
    background-color: #fff !important;
}

.bannerp {
    margin-top: 40px;
}

.fananicon {
    min-width: 9rem;
    min-height: 9rem;
    max-width: 9rem;
    max-height: 9rem;
}

.fananicon2 {
    min-width: 8rem;
    min-height: 8rem;
    max-width: 8rem;
    max-height: 8rem;
}

.bgimg {
    opacity: 0.5;
}

.paicon {
    min-height: 3.6rem;
    min-width: 9rem;
    max-height: 3.6rem;
    max-width: 9rem;
}