/* 字体配置 */
@font-face {
    font-family: 'Mulish';
    src: url('../fonts/c3d26f19ac7f56a0fd74.ttf') format('truetype');
    font-display: swap;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    overflow-x: hidden; /* 防止横向滚动 */
    width: 100%;
    position: relative;
}

body {
    font-family: 'Mulish', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

img {
    max-width: 100%;
    height: auto;
}

/* 布局容器 */
.container {
    max-width: 87.5rem;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Banner部分 */
.hero {
    height: 48.75rem;
    background: url('../img/bg7.png') no-repeat center center;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(0.1875rem);
}

.hero__content {
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero__title {
    color: #fff;
    font-weight: 400;
    font-style: italic;
    font-size: 4.635rem;
    line-height: 5.55rem;
    text-align: center;
    font-family: 'Mulish', Arial, sans-serif;
}

/* 章节通用样式 */
.section {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section__title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    text-align: center;
}

.section__title-line {
    width: 3.75rem;
    height: 0.1875rem;
    background-color: #000;
    margin-bottom: 3rem;
}

.section__subtitle {
    font-weight: 500;
    font-size: 2.375rem; 
    line-height: 3.325rem; 
    text-align: center;
    margin-top: 3.75rem; 
    margin-bottom: 3.125rem; 
}

/* 介绍部分 */
.intro-products-wrapper {
    background: #fff;
    height: 79.875rem; /* 1278px */
    width: 100%;
}

.section--intro {
    padding-top: 4.5rem;
    height: 22.8125rem;
}

.intro-products-wrapper .section__title-line {
    margin-bottom: 2.25rem;
}

/* 产品展示部分 */
.section--products {
    height: 57.0625rem; /* 913px */
    background-image: url('../img/bg1.png');
    background-size: cover;
    background-position: center;
    padding-top: 5rem;
    position: relative;
}

.section--products::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #00000080;
}

.section--products .container {
    position: relative;
    z-index: 1;
}

.section--products .section__title {
    font-weight: 500;
    font-size: 3rem;
    line-height: 4.2rem;
    text-align: center;
    color: #FFFFFF;
}

.section--products .section__title-line {
    margin-bottom: 4.25rem;
}

.products-grid {
    display: flex;
    justify-content: center;
    gap: 1.625rem;
    max-width: 87.5rem; /* 1400px */
    margin: 0 auto;
}

.product-card {
    background: #FFFFFF;
    border-radius: 0.875rem;
    box-shadow: 0 0 0.25rem 0 rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.product-card:first-child {
    width: 50.625rem; /* 810px */
    height: 38.125rem; /* 610px */
}

.product-card:last-child {
    width: 35.25rem; /* 564px */
    height: 38.125rem; /* 610px */
}

.product-card__image {
    width: 100%;
    height: 31.25rem; /* 500px */
    border-radius: 0.875rem 0.875rem 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-card__content {
    height: 6.875rem; /* 110px */
    padding: 0rem 3.125rem; /* 18px 50px */
    position: relative;
}

.product-card__content-wrapper {
    width: 100%;
    height: 4.5625rem; /* 73px */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-card:first-child .product-card__content-wrapper {
    max-width: 44.375rem; /* 710px */
}

.product-card:last-child .product-card__content-wrapper {
    max-width: 29rem; /* 464px */
}

.product-card__text {
    display: flex;
    flex-direction: column;
    gap: 0.875rem; /* 14px */
}

.product-card__title {
    font-weight: 500;
    font-size: 1.5rem;
    line-height: 2.1rem;
    color: #1D1D1F;
}

.product-card__params {
    display: flex;
    flex-wrap: nowrap;
    gap: 2.5rem; /* 40px */
}

.product-card__param {
    font-weight: 400;
    font-size: 1.125rem;
    line-height: 1.575rem;
    color: #6B6C6D;
    white-space: nowrap;
}

/* 按钮样式 */
.ess-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1rem;
    background: #0005FF;
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.5rem;
    line-height: 2.1rem;
    text-align: center;
    transition: background-color 0.3s ease;
    width: fit-content;
    min-width: min-content;
}

.ess-btn__icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-left: 0.5rem;
}

.ess-btn:hover {
    background-color: #292932;
}

/* 优势说明部分 */
.section--advantages {
    width: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}

.advantages-group {
    width: 100%;
    position: relative;
}

.advantages-group:first-child {
    height: 59.3125rem; /* 949px */
    padding-top: 5rem;
}

.advantages-group:first-child::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/bg15.png');
    background-size: cover;
    background-position: center;
    /* opacity: 0.3; */
    z-index: 2;
}

.advantages-group:first-child::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #171717;
    z-index: 1;
}

.advantages-group:last-child {
    height: 62.1875rem; /* 995px */
    /* padding-top: 5rem; */
}

.advantages-group:last-child::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/19.png');
    background-size: cover;
    background-position: center;
    /* opacity: 0.3; */
    z-index: 2;
}

.advantages-group:last-child::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #171717;
    z-index: 1;
}

.advantages-group .container {
    position: relative;
    z-index: 2;
}

.section--advantages .section__title {
    color: #FFFFFF;
}

.section--advantages .section__subtitle {
    color: #FFFFFF;
}

.section--advantages .section__title-line {
    margin-bottom: 3.75rem;
}

.advantages-group .section__subtitle {
    margin-top: 0;
    margin-bottom: 3.125rem;
}

.advantages-group:last-child .section__subtitle {
    margin-top: 10.0625rem; /* 183px */
    margin-bottom: 3.125rem;
}

.advantages-grid {
    display: grid;
    gap: 1.75rem;
    justify-content: center;
    margin-top: 0;
}

/* STAR-T 部分的布局 */
.advantages-group:first-child .advantages-grid {
    grid-template-columns: repeat(2, 43rem); /* 688px */
}

.advantages-group:first-child .advantage-card {
    width: 43rem; /* 688px */
    height: 20rem; /* 320px */
}

/* STAR-Q 部分的布局 */
.advantages-group:last-child .advantages-grid {
    grid-template-columns: 28.0625rem 28.0625rem 28.0625rem; /* 449px */
}

.advantages-group:last-child .advantage-card {
    width: 28.0625rem; /* 449px */
    height: 18.125rem; /* 290px */
}

.advantages-group:last-child .advantage-card--large {
    height: 37.875rem; /* 606px */
    grid-row: span 2;
}

.advantage-card {
    border-radius: 0.875rem;
    padding: 1.5rem;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

/* 移除之前的大卡片特殊尺寸 */
.advantages-group:first-child .advantage-card {
    height: 20rem; /* 320px */
}

.advantages-group:first-child .advantage-card--large {
    height: 20rem; /* 320px */
    grid-row: auto;
}

/* 移除大卡片的特殊样式 */
.advantage-card--large {
    grid-row: auto;
}

.advantage-card__content {
    position: relative;
    z-index: 2;
    transition: opacity 0.6s ease;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
}

.advantage-card:hover .advantage-card__content {
    opacity: 0;
}

.advantage-card__hover-content {
    position: absolute;
    top: 100%;
    left: 1.5rem;
    right: 1.5rem;
    opacity: 1;
    transition: top 500ms linear;
    color: #FFFFFF;
    z-index: 2;
    font-weight: 400;
    font-size: 1.25rem;
    line-height: 2.125rem;
    white-space: normal;
}

.advantage-card__hover-content ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin: 0;
}

.advantage-card__hover-content li {
    margin-bottom: 0.5rem;
}

.advantage-card__hover-content p {
    display: none;
}

.advantage-card:hover .advantage-card__hover-content {
    top: 2rem;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

/* STAR-T 部分的卡片背景 */
.advantages-group:first-child .advantage-card:nth-child(1) {
    background-image: url('../img/bg8.png');
}

.advantages-group:first-child .advantage-card:nth-child(2) {
    background-image: url('../img/bg9.png');
}

.advantages-group:first-child .advantage-card:nth-child(3) {
    background-image: url('../img/bg10.png');
}

.advantages-group:first-child .advantage-card:nth-child(4) {
    background-image: url('../img/bg11.png');
}

/* STAR-H 部分的卡片背景 */
.advantages-group:last-child .advantage-card:nth-child(1) {
    background-image: url('../img/13.png');
}

.advantages-group:last-child .advantage-card:nth-child(2) {
    background-image: url('../img/pic10.png');
}

.advantages-group:last-child .advantage-card:nth-child(3) {
    background-image: url('../img/bg12.png');
}

.advantages-group:last-child .advantage-card:nth-child(4) {
    background-image: url('../img/bg13.png');
}

.advantages-group:last-child .advantage-card:nth-child(5) {
    background-image: url('../img/bg14.png');
}

.advantage-card__icon {
    width: 2.75rem;
    height: 2.75rem;
}

.advantage-card__title {
    font-weight: 500;
    font-size: 1.625rem;
    line-height: 2.625rem;
    color: #FFFFFF;
}

/* 解决方案概述 */
.section--solution {
    height: 59.5625rem; /* 953px */
    padding-top: 6.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    background: #FFFFFF;
}

.section--solution .container {
    position: relative;
    z-index: 1;
}

/* .section--solution .section__title-line {
    margin-bottom: 1.375rem;
} */

.solution__bg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 9rem;
    left: 0;
    pointer-events: none;
    background-size: cover;
    background-position: center;
}

.solution-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    height: auto;
    overflow: hidden;
}

.solution-diagram {
    width: 100%;
    max-width: 70rem; /* 1120px */
    height: auto;
    margin: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.solution-diagram__panel {
    width: 100%;
    height: auto;
}

.solution-diagram__panel[hidden] {
    display: none;
}

.solution-diagram__panel.is-active {
    display: block;
}

.solution-diagram__figure {
    position: relative;
    width: 100%;
    height: auto;
}

.solution-diagram img {
    width: 100%;
    height: auto;
    display: block;
}

.solution__light-dot {
    position: absolute;
    z-index: 2;
    width: 2.5rem;
    height: 2.5rem;
    display: block;
    cursor: pointer;
    text-decoration: none;
}

.solution__light-dot-second {
    position: absolute;
    z-index: 2;
    width: 2.5rem;
    height: 2.5rem;
    display: block;
    cursor: pointer;
    text-decoration: none;
}

.solution-diagram__figure--star-t .solution__light-dot {
    top: 80.4%;
    left: 46.2%;
    transform: translate(-50%, -50%);
}

.solution-diagram__figure--star-t .solution__light-dot-second {
    top: 80.4%;
    left: 76.3%;
    transform: translate(-50%, -50%);
}

.solution-diagram__figure--star-h .solution__light-dot {
    top: 76.5%;
    left: 51%;
    transform: translate(-50%, -50%);
}

.solution-diagram__figure--star-h .solution__light-dot-second {
    top: 76.5%;
    left: 73.2%;
    transform: translate(-50%, -50%);
}

.light-dot__inner {
    position: absolute;
    width: 1.125rem;
    height: 1.125rem;
    background: #0005FF;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    animation: expand-inner 2s infinite;
}

.light-dot__middle {
    position: absolute;
    width: 1.75rem;
    height: 1.75rem;
    background: #7A7DFF;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    animation: expand-middle 2s infinite;
}

.light-dot__outer {
    position: absolute;
    width: 2.5rem;
    height: 2.5rem;
    background: #C5C6FF;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

.light-dot__inner-second {
    position: absolute;
    width: 1.125rem;
    height: 1.125rem;
    background: #0005FF;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    animation: expand-inner 2s infinite;
}

.light-dot__middle-second {
    position: absolute;
    width: 1.75rem;
    height: 1.75rem;
    background: #7A7DFF;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    animation: expand-middle 2s infinite;
}

.light-dot__outer-second {
    position: absolute;
    width: 2.5rem;
    height: 2.5rem;
    background: #C5C6FF;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

@keyframes expand-inner {
    0% {
        transform: translate(-50%, -50%) scale(1);
    }
    20% {
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        transform: translate(-50%, -50%) scale(2.22);
    }
}

@keyframes expand-middle {
    0% {
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        transform: translate(-50%, -50%) scale(1.43);
    }
}

/* 案例研究 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    gap: 2rem;
}

.case-card {
    background: #fff;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 0.25rem 0.375rem rgba(0, 0, 0, 0.1);
}

.case-card__image {
    height: 15rem;
    overflow: hidden;
}

.case-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-card:hover .case-card__image img {
    transform: scale(1.1);
}

.case-card__content {
    padding: 1.5rem;
}

.case-card__title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.case-card__text {
    color: #666;
}

/* 案例研究部分 */
.section--case {
    width: 100%;
    height: 78.3125rem; /* 1253px */
    padding-top: 5rem;
    background-image: url('../img/10.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section--case .section__title-line {
    margin-bottom: 4.25rem;
}

.case-list {
    height: auto;
    margin-top: 0;
    display: grid;
    grid-template-columns: repeat(3, 27.5rem); /* 440px */
    grid-template-rows: repeat(2, 28.125rem); /* 450px */
    gap: 2.5rem; /* 40px */
    justify-content: center;
}

.case-item {
    width: 27.5rem; /* 440px */
    height: 28.125rem; /* 450px */
}

.case-item__image {
    width: 27.5rem; /* 440px */
    height: 15.625rem;
    overflow: hidden;
}

.case-item__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-item:hover .case-item__image img {
    transform: scale(1.1);
}

.case-item__content {
    padding: 1.375rem 1.375rem 0;
    background-color: #FFFFFF;
    height: 12.5rem; /* 200px */
}

.case-item__title {
    font-weight: 500;
    font-size: 1.375rem; /* 22px */
    line-height: 100%;
    text-align: left;
    color: #1D1D1F;
    margin-bottom: 1.375rem; /* 22px */
}

.case-item__desc-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* 12px */
}

.case-item__desc {
    width: 21.625rem;
    margin-top: 0;
    font-weight: 400;
    font-size: 1.25rem; /* 20px */
    line-height: 1.75rem; /* 28px */
    text-align: left;
    color: #6B6C6D;
}

.case-item__desc span {
    color: #0005FF;
}

.case-item__icon {
    width: 1.5rem; /* 24px */
    height: 1.5rem;
    flex-shrink: 0;
}

.case-item__location-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* 12px */
    margin-top: 0.75rem; /* 12px */
}

.case-item__location {
    font-weight: 400;
    font-size: 1.25rem; /* 20px */
    line-height: 1.75rem; /* 28px */
    color: #6B6C6D;
}

/* 移除之前的高亮和普通文本颜色区分 */
.case-item__desc-highlight,
.case-item__desc-normal {
    color: #6B6C6D;
}

.case-item__arrow {
    width: 2.125rem;
    height: 2.125rem;
    flex-shrink: 0;
    cursor: pointer;
    /* transition: filter 0.3s ease; */
}

.case-item:hover .case-item__arrow {
    filter: invert(8%) sepia(100%) saturate(6481%) hue-rotate(241deg) brightness(101%) contrast(143%);
}

/* 响应式布局 */
@media screen and (max-width: 64rem) { /* 1024px */
    .hero__title {
        font-size: 3rem;
    }

    .section__title {
        font-size: 2rem;
    }

    /* Introduction和Products部分响应式 */
    .intro-products-wrapper {
        height: auto;
    }

    .section--intro {
        height: auto;
        padding: 3rem 0;
    }

    .section__text {
        font-size: 1.25rem;
        line-height: 1.875rem;
        padding: 0 1.5rem;
    }

    .section__text br {
        display: none;
    }

    .section--products {
        height: auto;
        padding: 3rem 0;
    }

    .products-grid {
        gap: 1.25rem;
        padding: 0 2rem;
    }

    .product-card:first-child {
        width: 40.625rem; /* 650px */
        height: 30.5rem; /* 488px */
    }

    .product-card:last-child {
        width: 28.25rem; /* 452px */
        height: 30.5rem; /* 488px */
    }

    .product-card__image {
        height: 25rem; /* 400px */
    }

    .product-card__content {
        height: 5.5rem; /* 88px */
        padding: 0 2.5rem;
    }

    .product-card__title {
        font-size: 1.375rem;
        line-height: 1.925rem;
    }

    .product-card__param {
        font-size: 1rem;
        line-height: 1.4rem;
    }
    .product-card__params {
        flex-wrap: nowrap;
        gap: 2rem;
    }

    /* 案例研究部分响应式 */
    .section--case {
        height: auto;
        padding: 5rem 2rem;
    }

    .section--case .section__title-line {
        margin-bottom: 3.5rem;
    }

    .case-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        padding: 0 1rem;
    }

    .case-item {
        width: 100%;
        height: auto;
    }

    .case-item__image {
        width: 100%;
        height: 15.625rem;
    }

    .case-item__content {
        height: auto;
        padding: 1.5rem;
    }

    /* 优势说明部分响应式 */
    .advantages-group:first-child {
        height: 50rem; /* 800px */
    }

    .advantages-group:last-child {
        height: 52rem; /* 832px */
    }

    .advantages-group:first-child .advantages-grid {
        grid-template-columns: repeat(2, 36rem); /* 576px */
        gap: 1.5rem;
    }

    .advantages-group:last-child .advantages-grid {
        grid-template-columns: 23.75rem 23.75rem 23.75rem; /* 380px */
        gap: 1.5rem;
    }

    .advantages-group:first-child .advantage-card {
        width: 36rem; /* 576px */
        height: 17rem; /* 272px */
    }

    .advantages-group:last-child .advantage-card {
        width: 23.75rem; /* 380px */
        height: 15.375rem; /* 246px */
    }

    .advantages-group:last-child .advantage-card--large {
        height: 32rem; /* 512px */
    }

    .advantage-card__title {
        font-size: 1.375rem;
        line-height: 2.25rem;
    }

    .advantage-card__hover-content {
        font-size: 1.125rem;
        line-height: 1.75rem;
    }

    .advantage-card__icon {
        width: 2.5rem;
        height: 2.5rem;
    }

    .advantages-group:last-child .section__subtitle {
        margin-top: 8rem;
    }

    /* 解决方案部分响应式 */
    .section--solution {
        height: auto;
        padding: 4rem 0;
    }

    .solution-content {
        height: auto;
        padding: 0 2rem;
    }

    .solution-diagram {
        width: 100%;
        max-width: 60rem;
        height: auto;
        aspect-ratio: 1120/588;
    }

    .solution-tabs {
        flex-wrap: wrap;
        gap: 1rem;
        padding: 2rem 1rem;
    }

    .solution-tab {
        font-size: 1.25rem;
        line-height: 1.75rem;
        padding: 0.5rem 0.875rem;
    }

    .solution-tab {
        font-size: 1.25rem;
        line-height: 1.75rem;
        padding: 0.5rem 0.875rem;
    }

    .solution-tab__icon {
        width: 1.25rem;
        height: 1.25rem;
        display: none;
    }

    .solution-tab.active .solution-tab__icon {
        display: block;
    }
}

@media screen and (max-width: 48rem) { /* 768px */
    .hero__title {
        font-size: 2.5rem;
    }

    /* Introduction和Products部分响应式 */
    .products-grid {
        gap: 1rem;
        padding: 0 1.5rem;
    }

    .product-card:first-child {
        width: 35.625rem; /* 570px */
        height: 26.75rem; /* 428px */
    }

    .product-card:last-child {
        width: 24.75rem; /* 396px */
        height: 26.75rem; /* 428px */
    }

    .product-card__image {
        height: 21.875rem; /* 350px */
    }

    .product-card__content {
        height: 4.875rem; /* 78px */
        padding: 0 2rem;
    }

    .product-card__title {
        font-size: 1.25rem;
        line-height: 1.75rem;
    }

    .product-card__param {
        font-size: 0.9375rem;
        line-height: 1.3125rem;
    }

    .ess-btn {
        font-size: 1rem;
        line-height: 1.4rem;
        padding: 0.4375rem 0.875rem;
    }

    .ess-btn__icon {
        width: 1.25rem;
        height: 1.25rem;
        margin-left: 0.375rem;
    }

    /* 优势说明部分响应式 */
    .advantages-group:first-child {
        height: 45rem; /* 720px */
    }

    .advantages-group:last-child {
        height: 47rem; /* 752px */
    }

    .advantages-group:first-child .advantages-grid {
        grid-template-columns: repeat(2, 31rem); /* 496px */
        gap: 1.25rem;
    }

    .advantages-group:last-child .advantages-grid {
        grid-template-columns: 20.5rem 20.5rem 20.5rem; /* 328px */
        gap: 1.25rem;
    }

    .advantages-group:first-child .advantage-card {
        width: 31rem; /* 496px */
        height: 14.625rem; /* 234px */
    }

    .advantages-group:last-child .advantage-card {
        width: 20.5rem; /* 328px */
        height: 13.25rem; /* 212px */
    }

    .advantages-group:last-child .advantage-card--large {
        height: 27.625rem; /* 442px */
    }

    .advantage-card__title {
        font-size: 1.25rem;
        line-height: 2rem;
    }

    .advantage-card__hover-content {
        font-size: 1rem;
        line-height: 1.625rem;
    }

    .advantage-card__icon {
        width: 2.25rem;
        height: 2.25rem;
    }

    .section--advantages .section__subtitle {
        font-size: 2rem;
        line-height: 2.8rem;
        margin-bottom: 2.5rem;
    }

    /* 案例研究部分响应式 */
    .case-list {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .case-item {
        max-width: 100%;
    }

    .case-item__title {
        font-size: 1.25rem;
        line-height: 1.75rem;
        margin-bottom: 1rem;
    }

    .case-item__desc {
        font-size: 1.125rem;
        line-height: 1.575rem;
    }

    .case-item__location {
        font-size: 1.125rem;
        line-height: 1.575rem;
    }

    .case-item__icon {
        width: 1.25rem;
        height: 1.25rem;
    }

    .case-item__arrow {
        width: 1.75rem;
        height: 1.75rem;
    }

    /* 解决方案部分响应式 */
    .solution-content {
        padding: 0 1.5rem;
    }

    .solution-diagram {
        max-width: 45rem;
    }

    .solution-tabs {
        padding: 1.5rem 0.75rem;
    }

    .solution-tab {
        font-size: 1.125rem;
        line-height: 1.575rem;
        padding: 0.375rem 0.75rem;
    }
}

@media screen and (max-width: 36rem) { /* 576px */
    .hero__title {
        font-size: 2rem;
    }

    /* Introduction和Products部分响应式 */
    .section__text {
        font-size: 1rem;
        line-height: 1.5rem;
        padding: 0 1rem;
    }

    .products-grid {
        gap: 0.875rem;
        padding: 0 1rem;
    }

    .product-card:first-child {
        width: 30.625rem; /* 490px */
        height: 23rem; /* 368px */
    }

    .product-card:last-child {
        width: 21.25rem; /* 340px */
        height: 23rem; /* 368px */
    }

    .product-card__image {
        height: 17.75rem; /* 300px */
    }

    .product-card__content {
        height: 4.25rem; /* 68px */
        padding: 0 1.75rem;
    }

    .product-card__title {
        font-size: 1.125rem;
        line-height: 1.575rem;
    }

    .product-card__param {
        font-size: 0.875rem;
        line-height: 1.225rem;
    }

    .ess-btn {
        font-size: 0.875rem;
        line-height: 1.225rem;
        padding: 0.375rem 0.75rem;
    }

    .ess-btn__icon {
        width: 1rem;
        height: 1rem;
        margin-left: 0.25rem;
    }

    /* 案例研究部分响应式 */
    .section--case {
        padding: 3rem 1rem;
    }

    .case-list {
        gap: 1.5rem;
    }

    .case-item {
        max-width: 100%;
    }

    .case-item__title {
        font-size: 1.125rem;
        line-height: 1.5rem;
        margin-bottom: 0.75rem;
    }

    .case-item__desc {
        font-size: 1rem;
        line-height: 1.4rem;
    }

    .case-item__location {
        font-size: 1rem;
        line-height: 1.4rem;
    }

    .case-item__desc-wrapper {
        gap: 0.5rem;
    }

    .case-item__location-wrapper {
        gap: 0.5rem;
        margin-top: 0.5rem;
    }

    .case-item__icon {
        width: 1rem;
        height: 1rem;
    }

    .case-item__arrow {
        width: 1.5rem;
        height: 1.5rem;
    }

    /* 优势说明部分响应式 */
    .advantages-group:first-child {
        height: 40rem; /* 640px */
    }

    .advantages-group:last-child {
        height: 42rem; /* 672px */
    }

    .advantages-group:first-child .advantages-grid {
        grid-template-columns: repeat(2, 26rem); /* 416px */
        gap: 1rem;
    }

    .advantages-group:last-child .advantages-grid {
        grid-template-columns: 17.25rem 17.25rem 17.25rem; /* 276px */
        gap: 1rem;
    }

    .advantages-group:first-child .advantage-card {
        width: 26rem; /* 416px */
        height: 12.25rem; /* 196px */
    }

    .advantages-group:last-child .advantage-card {
        width: 17.25rem; /* 276px */
        height: 11.125rem; /* 178px */
    }

    .advantages-group:last-child .advantage-card--large {
        height: 23.25rem; /* 372px */
    }

    .advantage-card__title {
        font-size: 1.125rem;
        line-height: 1.75rem;
    }

    .advantage-card__hover-content {
        font-size: 0.875rem;
        line-height: 1.5rem;
        padding: 1rem;
    }

    .advantage-card__icon {
        width: 2rem;
        height: 2rem;
    }

    .section--advantages .section__subtitle {
        font-size: 1.75rem;
        line-height: 2.45rem;
        margin-bottom: 2rem;
    }

    .advantage-card__content {
        gap: 0.75rem;
    }

    .advantage-card:hover .advantage-card__hover-content {
        top: 1.5rem;
    }

    .advantages-group:last-child .section__subtitle {
        margin-top: 4rem;
    }

    .section--advantages .section__subtitle {
        font-size: 1.75rem;
        line-height: 2.45rem;
        margin-bottom: 2rem;
    }

    .advantage-card__icon {
        width: 2.25rem;
        height: 2.25rem;
    }

    /* 解决方案部分响应式 */
    .solution-content {
        padding: 0 1rem;
    }

    .solution-diagram {
        max-width: 35rem;
    }

    .solution-tabs {
        padding: 1rem 0.5rem;
        gap: 0.75rem;
    }

    .solution-tab {
        font-size: 1rem;
        line-height: 1.4rem;
        padding: 0.25rem 0.625rem;
    }

    .solution-tab__icon {
        width: 1.25rem;
        height: 1.25rem;
    }
}

/* 移除之前可能存在的通用margin-top */
.section__text,
.advantages-grid,
.solution-content,
.case-list {
    margin-top: 0;
}

/* 通用样式 */
.section__text {
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 2.375rem;
    text-align: center;
    color: #333333;
}

.section__title {
    font-size: 3rem;
    font-weight: 500;
    line-height: 4.2rem;
    text-align: center;
    color: #1D1D1F;
    margin-bottom: 0.25rem;
}

.section__title-line {
    width: 2.5rem;
    height: 0.25rem;
    background: #0005FF;
    margin: 0 auto;
}

.solution-tabs {
    padding-top: 2.875rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.solution-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1rem;
    border: none;
    background: #BCBDE9;
    cursor: pointer;
    font-weight: 500;
    font-size: 1.5rem;
    line-height: 2.1rem;
    color: #fff;
    transition: background-color 0.3s ease;
}

.solution-tab:hover {
    background: #292932;
}

.solution-tab.active {
    background: #0005FF;
}

.solution-tab.active:hover {
    background: #0005FF;
}

.solution-tab__icon {
    width: 1.5rem;
    height: 1.5rem;
    display: none;
}

.solution-tab.active .solution-tab__icon {
    display: block;
}