/* ==================== 优势 ==================== */
.strength-section {
    padding: 0;
    background: #fff;
}

.strength-section .section-head {
    text-align: center;
    margin-bottom: 40px;
}

.strength-section .section-subtitle {
    font-size: 16px;
    color: #666;
    margin-top: 12px;
}

.strength-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.strength-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding:30px 24px;
    transition: transform .3s ease, box-shadow .3s ease;
}

.strength-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, .08);
}

.strength-icon {
    flex: 0 0 auto;
    width: 56px;
    height: 56px;
}

.strength-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.strength-body {
    min-width: 0;
}

.strength-title {
    font-size: 20px;
    font-weight: 500;
    color: #001326;
    margin-bottom: 6px;
    line-height: 1.4;
    font-family: "Source Han Sans CN Medium", "SourceHanSansCN-Medium", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.strength-desc {
    font-size: 14px;
    line-height: 1.6;
    color: #818b9b;
}

@media (max-width: 1024px) {
    .strength-section {
        padding: 60px 0;
    }

    .strength-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .strength-title {
        font-size: 17px;
    }
}

@media (max-width: 768px) {
    .strength-section {
        padding: 48px 0;
    }

    .strength-section .section-head {
        margin-bottom: 28px;
    }

    .strength-section .section-title {
        font-size: 26px;
    }

    .strength-section .section-subtitle {
        font-size: 14px;
    }

    .strength-grid {
        gap: 16px;
    }

    .strength-item {
        padding: 18px;
        gap: 14px;
    }

    .strength-icon {
        width: 52px;
        height: 52px;
        padding: 11px;
        border-radius: 12px;
    }

    .strength-title {
        font-size: 16px;
    }

    .strength-desc {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .strength-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 品牌概述 ==================== */
.brand-section {
    padding: 60px 0 0;
    background: url(../images/about/about_bg1.png) no-repeat left bottom #f6f7fa;
}

.brand-section .section-head {
    text-align: center;
    margin-bottom: 40px;
}

.brand-section .section-subtitle {
    font-size: 16px;
    color: #666;
    margin-top: 12px;
}

.brand-card {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 48px;
    align-items: center;
    padding: 48px;
    background: #fff;
    position: relative;
    z-index: 100;
}

.brand-card-title {
    font-size: 24px;
    font-weight: 600;
    color: #111;
    margin-bottom: 24px;
    line-height: 1.4;
}

.brand-body p {
    font-size: 15px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 16px;
}

.brand-body p:last-child {
    margin-bottom: 0;
}

.brand-media {
    margin: 0;
    border-radius: 12px;
    overflow: hidden;
}

.brand-media img {
    width: 100%;
    height: auto;
    display: block;
}

@media (max-width: 1024px) {
    .brand-card {
        grid-template-columns: 1fr 340px;
        gap: 36px;
        padding: 36px;
    }

    .brand-card-title {
        font-size: 22px;
    }
}

@media (max-width: 768px) {
    .brand-section {
        padding: 60px 0;
    }

    .brand-section .section-head {
        margin-bottom: 28px;
    }

    .brand-section .section-title {
        font-size: 26px;
    }

    .brand-section .section-subtitle {
        font-size: 14px;
    }

    .brand-card {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 24px;
    }

    .brand-media {
        order: -1;
    }

    .brand-card-title {
        font-size: 20px;
        margin-bottom: 18px;
    }

    .brand-body p {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .brand-card {
        padding: 20px;
        border-radius: 12px;
    }

    .brand-card-title {
        font-size: 18px;
    }

    .brand-body p {
        font-size: 13px;
        line-height: 1.75;
    }
}

/* ==================== 智培盟的核心定位 ==================== */
.position-section {
    padding:80px 0 60px 0;
    margin-top:-26px;
    color: #fff;
    background: #0164ff url(../images/about/about_bg2.jpg) no-repeat center top;
    background-size: cover;
}

.position-section .section-head {
    text-align: center;
    margin-bottom: 40px;
}

.position-section .section-title {
    font-size: 36px;
    font-weight: 500;
    color: #fff;
}

.position-section .section-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, .8);
    margin-top: 12px;
}

.position-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.position-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 28px;
    border-radius: 16px;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .12);
    backdrop-filter: blur(4px);
    transition: background .3s ease, transform .3s ease;
}

.position-item:hover {
    background: rgba(255, 255, 255, .14);
    transform: translateY(-4px);
}

.position-num {
    flex: 0 0 auto;
    font-size: 26px;
    font-weight: 500;
    line-height: 1;
    color: rgba(255, 255, 255, .9);
}

.position-body {
    min-width: 0;
}

.position-item-title {
    font-size: 20px;
    font-weight: 500;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.4;
}

.position-desc {
    font-size: 15px;
    line-height: 1.6;
    color: rgba(255, 255, 255, .85);
}

@media (max-width: 1024px) {
    .position-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .position-item {
        padding: 24px;
    }
}

@media (max-width: 768px) {
    .position-section {
        padding: 60px 0;
    }

    .position-section .section-head {
        margin-bottom: 28px;
    }

    .position-section .section-title {
        font-size: 26px;
    }

    .position-section .section-subtitle {
        font-size: 14px;
    }

    .position-grid {
        gap: 16px;
    }

    .position-item {
        padding: 20px;
        gap: 14px;
    }

    .position-num {
        font-size: 24px;
    }

    .position-item-title {
        font-size: 16px;
    }

    .position-desc {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .position-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 在线学习平台 ==================== */
.platform-section {
    padding: 80px 0;
    background:url(../images/about/pp_bg.jpg) top center no-repeat #fff;
    background-size: 100% auto;
}

.platform-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 48px;
    align-items: start;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.platform-sidebar {
    padding-top: 8px;
}

.platform-toggle-group {
    display: flex;
    flex-direction: column;
    gap: 18px;
    align-items: flex-start;
}

.platform-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 0 0 0 32px;
    font-family: inherit;
    font-size: 22px;
    line-height: 1.4;
    color: #000;
    background: none;
    border: none;
    cursor: pointer;
    transition: color .2s ease;
}

.platform-toggle::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 2px;
    background: #ddd;
    transition: width .2s ease, background .2s ease;
}

.platform-toggle:hover {
    color: #004fe3;
}

.platform-toggle.active {
    color: #004fe3;
    font-weight: 600;
}

.platform-toggle.active::before {
    width: 24px;
    background: #004fe3;
}

.platform-content {
    min-width: 0;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.platform-grid[hidden] {
    display: none;
}

.platform-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 24px;
    background: #fff;
    border: 1px solid #f0f0f0;
    border-radius: 12px;
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.platform-card:hover {
    transform: translateY(-3px);
    border-color: #e0eaff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .06);
}

.platform-icon {
    flex: 0 0 auto;
    width: 50px;
    height: 50px;
}

.platform-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.platform-body {
    min-width: 0;
}

.platform-card-title {
    font-size: 20px;
    font-weight: 500;
    color: #000;
    margin-bottom: 6px;
    line-height: 1.4;
}

.platform-desc {
    font-size: 16px;
    line-height: 1.6;
    color: #666;
}

@media (max-width: 1024px) {
    .platform-layout {
        grid-template-columns: 180px 1fr;
        gap: 32px;
    }

    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .platform-section {
        padding: 60px 0;
    }

    .platform-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .platform-sidebar {
        padding-top: 0;
    }

    .platform-toggle-group {
        flex-direction: row;
        align-items: center;
        gap: 24px;
    }

    .platform-toggle {
        padding-left: 24px;
        font-size: 15px;
    }

    .platform-toggle.active {
        font-size: 16px;
    }

    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .platform-card {
        padding: 18px;
    }
}

@media (max-width: 480px) {
    .platform-toggle-group {
        gap: 16px;
    }

    .platform-grid {
        grid-template-columns: 1fr;
    }

    .platform-card-title {
        font-size: 15px;
    }

    .platform-desc {
        font-size: 13px;
    }
}

/* ==================== 品牌及资质资产 ==================== */
.assets-section {
    padding: 60px 0;
    background: #f9fbff;
}

.assets-section .section-head {
    text-align: center;
    margin-bottom: 40px;
}

.assets-section .section-subtitle {
    font-size: 16px;
    color: #666;
    margin-top: 12px;
}

.assets-carousel {
    position: relative;
    padding: 0 56px;
}

.assets-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: #0164ff;
    color: #fff;
    cursor: pointer;
    transition: opacity .2s ease, background .2s ease;
}

.assets-arrow:hover:not(:disabled):not(.swiper-button-disabled) {
    background: #0052cc;
}

.assets-arrow:disabled,
.assets-arrow.swiper-button-disabled {
    opacity: .5;
    cursor: default;
}

.assets-prev {
    left: 0;
}

.assets-next {
    right: 0;
}

.assets-swiper {
    overflow: hidden;
}

.assets-slide {
    height: auto;
}

.assets-card {
    margin: 0;
    height: 100%;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    /* box-shadow: 0 4px 20px rgba(0, 0, 0, .06); */
    transition: transform .3s ease, box-shadow .3s ease;
}

.assets-card:hover {
    transform: translateY(-3px);
    /* box-shadow: 0 8px 30px rgba(0, 0, 0, .1); */
}

.assets-card img {
    width: 100%;
    height: auto;
    display: block;
}

.assets-card figcaption {
    padding: 16px;
    font-size: 14px;
    line-height: 1.5;
    color: #282828;
    text-align: center;
}

@media (max-width: 1024px) {
    .assets-carousel {
        padding: 0 48px;
    }

    .assets-arrow {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 768px) {
    .assets-section {
        padding: 60px 0;
    }

    .assets-section .section-head {
        margin-bottom: 28px;
    }

    .assets-section .section-title {
        font-size: 26px;
    }

    .assets-section .section-subtitle {
        font-size: 14px;
    }

    .assets-carousel {
        padding: 0 40px;
    }

    .assets-card figcaption {
        padding: 12px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .assets-carousel {
        padding: 0 0 56px;
    }

    .assets-arrow {
        top: auto;
        bottom: 0;
        transform: none;
    }

    .assets-prev {
        left: calc(50% - 52px);
    }

    .assets-next {
        right: calc(50% - 52px);
    }
}

/* ==================== 智培盟核心优势 ==================== */
.core-advantage-section {
    padding: 60px 0;
    background: #f6f7fa;
}

.core-advantage-section .section-head {
    text-align: center;
    margin-bottom: 48px;
}

.core-advantage-section .section-subtitle {
    font-size: 16px;
    color: #666;
    margin-top: 12px;
}

.core-advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.core-advantage-item {
    padding: 32px;
    background: #fff;
    /* border-radius: 16px;
    border: 1px solid #f0f0f0;*/
    border-top:4px solid #0066f6;
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease; 
}

.core-advantage-item:hover {
    transform: translateY(-4px);
    border-color: #e0eaff;
    /* box-shadow: 0 12px 40px rgba(0, 0, 0, .08); */
}

.core-advantage-icon {
    width: 83px;
    height: 83px;
    margin-bottom: 20px;
}

.core-advantage-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.core-advantage-title {
    font-size: 24px;
    font-weight: 500;
    color: #000;
    margin-bottom: 12px;
    line-height: 1.4;
    font-family: "Source Han Sans CN Medium", "SourceHanSansCN-Medium", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.core-advantage-desc {
    font-size: 15px;
    line-height: 1.8;
    color: #000000;
    margin: 0;
}

@media (max-width: 1024px) {
    .core-advantage-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .core-advantage-item {
        padding: 28px;
    }
}

@media (max-width: 768px) {
    .core-advantage-section {
        padding: 60px 0;
    }

    .core-advantage-section .section-head {
        margin-bottom: 32px;
    }

    .core-advantage-section .section-title {
        font-size: 26px;
    }

    .core-advantage-section .section-subtitle {
        font-size: 14px;
    }

    .core-advantage-grid {
        gap: 16px;
    }

    .core-advantage-item {
        padding: 22px;
    }

    .core-advantage-icon {
        width: 56px;
        height: 56px;
        margin-bottom: 16px;
    }

    .core-advantage-title {
        font-size: 17px;
        margin-bottom: 8px;
    }

    .core-advantage-desc {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .core-advantage-grid {
        grid-template-columns: 1fr;
    }

    .core-advantage-item {
        padding: 20px;
    }

    .core-advantage-title {
        font-size: 16px;
    }

    .core-advantage-desc {
        font-size: 13px;
    }
}

/* ==================== 企业培训案例 ==================== */
.train-case-section {
    padding:10px 0 60px 0;
    background: #f6f7fa;
}

.train-case-section .section-head {
    text-align: center;
    margin-bottom: 40px;
}

.train-case-section .section-subtitle {
    font-size: 16px;
    color: #666;
    margin-top: 12px;
}

.train-case-grid {
    display: grid;
    grid-template-columns: 1.69fr 1fr 1fr;
    grid-template-rows: repeat(2, 1fr);
    gap: 16px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.train-case-item-lg {
    grid-column: 1;
    grid-row: 1 / span 2;
}

.train-case-card {
    position: relative;
    margin: 0;
    height: 100%;
    border-radius: 12px;
    overflow: hidden;
    background: #e9edf3;
}

.train-case-card img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.train-case-card:hover img {
    transform: scale(1.04);
}

.train-case-card figcaption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 18px 16px;
    font-size: 15px;
    line-height: 1.5;
    color: #fff;
    background: linear-gradient(to top, rgba(0, 0, 0, .65), rgba(0, 0, 0, 0));
}

.train-case-item-lg .train-case-card figcaption {
    padding: 24px 20px;
    font-size: 18px;
}

@media (max-width: 1024px) {
    .train-case-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: none;
        gap: 14px;
    }

    .train-case-item-lg {
        grid-column: 1 / -1;
        grid-row: auto;
    }

    .train-case-item-lg .train-case-card img {
        aspect-ratio: 694 / 570;
        height: auto;
    }

    .train-case-item:not(.train-case-item-lg) .train-case-card img {
        aspect-ratio: 410 / 279;
        height: auto;
    }
}

@media (max-width: 768px) {
    .train-case-section {
        padding: 60px 0;
    }

    .train-case-section .section-head {
        margin-bottom: 28px;
    }

    .train-case-section .section-title {
        font-size: 26px;
    }

    .train-case-section .section-subtitle {
        font-size: 14px;
    }

    .train-case-grid {
        gap: 12px;
    }

    .train-case-card figcaption {
        padding: 12px;
        font-size: 13px;
    }

    .train-case-item-lg .train-case-card figcaption {
        padding: 14px 12px;
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .train-case-grid {
        grid-template-columns: 1fr;
    }

    .train-case-card figcaption {
        font-size: 12px;
    }
}

/* 查看更多按钮 */
.btn-view-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: fit-content;
    min-width: 180px;
    margin: 38px auto 0;
    padding: 13px 36px;
    font-size: 16px;
    line-height: 1.5;
    color: #2c7aec;
    text-decoration: none;
    border: 1px solid #2c7aec;
    border-radius: 50px;
    background: transparent;
    transition: color .2s ease, background .2s ease, transform .2s ease;
}

.btn-view-more:hover {
    color: #fff;
    background: #2c7aec;
    transform: translateY(-2px);
}

.btn-view-more-icon {
    flex: 0 0 auto;
    display: block;
}

@media (max-width: 768px) {
    .btn-view-more {
        min-width: 160px;
        padding: 11px 28px;
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .btn-view-more {
        width: 100%;
        max-width: 280px;
        padding: 12px 24px;
    }
}