*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    background: #eef1f5;
}

body {
    margin: 0;
    color: #111;
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        "PingFang SC",
        "Hiragino Sans GB",
        "Microsoft YaHei",
        Arial,
        sans-serif;
    background: #eef1f5;
}

button {
    font: inherit;
}

img {
    display: block;
    max-width: 100%;
}

#section11 {
    --accent: #76218c;
    --title: #081236;
    --text: #7f879b;
    --card: #fff;
    --shadow: 0 5px 14px rgba(30, 38, 58, .12);
    padding: 58px 0 72px;
    background: #eef1f5;
    overflow: hidden;
}

#section11 .inner {
    width: min(calc(100% - 40px), 1140px);
    margin-inline: auto;
}

#section11 .head {
    margin-bottom: 38px;
    text-align: center;
}

#section11 .title {
    margin: 0;
    color: var(--title);
    font-size: clamp(36px, 4vw, 48px);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -.03em;
}

#section11 .desc {
    max-width: 980px;
    margin: 12px auto 0;
    color: var(--text);
    font-size: 16px;
    line-height: 1.65;
}

#section11 .layout {
    display: grid;
    grid-template-columns: 270px minmax(0, 1fr);
    gap: 30px;
    align-items: start;
}

#section11 .nav {
    display: grid;
    gap: 14px;
}

#section11 .tab {
    position: relative;
    width: 100%;
    min-height: 44px;
    padding: 11px 20px;
    border: 0;
    border-radius: 5px;
    color: #7a7f91;
    background: var(--card);
    box-shadow: var(--shadow);
    text-align: left;
    cursor: pointer;
    transition:
        color .22s ease,
        background-color .22s ease,
        transform .22s ease;
}

#section11 .tab::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -10px;
    width: 0;
    height: 0;
    opacity: 0;
    transform: translateY(-50%);
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 10px solid var(--accent);
    transition: opacity .22s ease;
}

#section11 .tab.is-active {
    color: #fff;
    background: var(--accent);
    box-shadow: 0 5px 15px rgba(118, 33, 140, .24);
}

#section11 .tab.is-active::after {
    opacity: 1;
}

#section11 .viewer {
    position: relative;
    min-width: 0;
}

#section11 .texture {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #d7d8dc;
}

#section11 .texture .swiper-wrapper,
#section11 .texture .swiper-slide {
    width: 100%;
    height: 100%;
}

#section11 .slide {
    margin: 0;
}

#section11 .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#section11 .prev,
#section11 .next {
    position: absolute;
    top: 50%;
    z-index: 5;
    width: 46px;
    height: 54px;
    border: 0;
    display: grid;
    place-items: center;
    color: var(--accent);
    background: rgba(255, 255, 255, .82);
    cursor: pointer;
    transform: translateY(-50%);
    transition:
        color .22s ease,
        background-color .22s ease,
        opacity .22s ease;
}

#section11 .prev {
    left: 0;
}

#section11 .next {
    right: 0;
}

#section11 .prev span,
#section11 .next span {
    display: block;
    margin-top: -3px;
    font-size: 48px;
    font-weight: 300;
    line-height: 1;
}

#section11 .prev.swiper-button-disabled,
#section11 .next.swiper-button-disabled {
    opacity: .35;
    cursor: default;
}

#section11 .pagination {
    position: absolute;
    right: 0;
    bottom: 14px;
    left: 0;
    z-index: 6;
    width: 100%;
    text-align: center;
    pointer-events: none;
}

#section11 .pagination .swiper-pagination-bullet {
    width: 8px;
    height: 8px;
    margin: 0 5px;
    background: rgba(255, 255, 255, .82);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, .1);
    opacity: 1;
    pointer-events: auto;
}

#section11 .pagination .swiper-pagination-bullet-active {
    background: var(--accent);
}

@media (hover: hover) and (pointer: fine) {
    #section11 .tab:not(.is-active):hover {
        color: var(--accent);
        transform: translateX(3px);
    }

    #section11 .prev:not(.swiper-button-disabled):hover,
    #section11 .next:not(.swiper-button-disabled):hover {
        color: #fff;
        background: var(--accent);
    }
}

@media (max-width: 991px) {
    #section11 {
        padding: 54px 0 64px;
    }

    #section11 .layout {
        grid-template-columns: 220px minmax(0, 1fr);
        gap: 24px;
    }

    #section11 .tab {
        padding-right: 16px;
        padding-left: 16px;
        font-size: 15px;
    }
}

@media (max-width: 767px) {
    #section11 {
        padding: 48px 0 54px;
    }

    #section11 .inner {
        width: min(calc(100% - 32px), 1140px);
    }

    #section11 .head {
        margin-bottom: 28px;
    }

    #section11 .title {
        font-size: 34px;
    }

    #section11 .desc {
        margin-top: 10px;
        font-size: 15px;
        line-height: 1.6;
    }

    #section11 .layout {
        grid-template-columns: 1fr;
        gap: 22px;
    }

    #section11 .nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    #section11 .tab {
        min-height: 48px;
        padding: 9px 10px;
        text-align: center;
        font-size: 13px;
        line-height: 1.35;
    }

    #section11 .tab::after {
        display: none;
    }

    #section11 .texture {
        aspect-ratio: 4 / 3;
    }

    #section11 .prev,
    #section11 .next {
        width: 42px;
        height: 50px;
    }

    #section11 .prev span,
    #section11 .next span {
        font-size: 44px;
    }

    #section11 .pagination {
        bottom: 12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    #section11 .tab,
    #section11 .prev,
    #section11 .next {
        transition: none;
    }
}