/* ==========================
 * About Page (CRMEB style)
 * ========================== */

/* hero */
.ab-hero {
    position: relative;
    padding: 90px 0 80px;
    text-align: center;
    color: #fff;
    background:
        linear-gradient(135deg, rgba(37, 99, 235, .92), rgba(13, 71, 161, .92)),
        radial-gradient(circle at 30% 40%, rgba(255,255,255,.18), transparent 60%);
}
.ab-hero h2 {
    font-size: 38px;
    font-weight: 700;
    letter-spacing: 2px;
    margin: 0 0 14px;
    color: #fff;
}
.ab-hero p {
    font-size: 16px;
    opacity: .9;
    letter-spacing: 1px;
    margin: 0;
}

/* section base */
.ab-section {
    padding: 80px 0;
    background: #fff;
}
.ab-section.ab-culture {
    position: relative;
    background: #f7f9fc;
}
.ab-section.ab-number { background: linear-gradient(135deg, #1d4ed8, #0ea5e9); color: #fff; }
.ab-section.ab-honor { background: #f7f9fc; }
.ab-section.ab-contact { background: #fff; }

.ab-section-head {
    text-align: center;
    margin-bottom: 56px;
}
.ab-section-head h3 {
    position: relative;
    display: inline-block;
    font-size: 30px;
    font-weight: 700;
    color: #1f2937;
    margin: 0 0 14px;
}
.ab-section-head h3::before,
.ab-section-head h3::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #2563eb);
}
.ab-section-head h3::before { right: 100%; margin-right: 18px; }
.ab-section-head h3::after  { left: 100%;  margin-left: 18px;
    background: linear-gradient(90deg, #2563eb, transparent); }
.ab-section-head p {
    color: #6b7280;
    font-size: 15px;
    letter-spacing: 1px;
    margin: 0;
}
.ab-number .ab-section-head h3 { color: #fff; }
.ab-number .ab-section-head h3::before,
.ab-number .ab-section-head h3::after { background: linear-gradient(90deg, transparent, rgba(255,255,255,.7)); }
.ab-number .ab-section-head h3::after { background: linear-gradient(90deg, rgba(255,255,255,.7), transparent); }
.ab-number .ab-section-head p { color: rgba(255,255,255,.85); }

/* intro */
.ab-intro-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    background: #fff;
    box-shadow: 0 10px 40px rgba(15, 23, 42, .08);
}
.ab-intro-text {
    padding: 40px 36px;
    border-radius: 12px;
    line-height: 1.95;
    font-size: 15px;
    color: #374151;
}
.ab-intro-text p { margin: 0 0 14px; }
.ab-intro-text p:last-child { margin-bottom: 0; }
.ab-intro-image {
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 1 / 1;
}
.ab-intro-image img {
    margin: 5% auto;
    width: 90%;
    height: 90%;
    object-fit: cover;
    display: block;
    transition: transform .4s ease;
    border-radius: 12px;
}
.ab-intro-image:hover img {
    transform: scale(1.03);
}

/* culture — 3+2 错落布局 */
.ab-culture-list {
    list-style: none;
    padding: 0;
    margin: 0;
    /* 外层容器的总宽度（配合 JS row） */
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* 每个逻辑行 */
.ab-culture-row {
    display: grid;
    gap: 20px;
    margin-bottom: 20px;
}
.ab-culture-row:last-child { margin-bottom: 0; }

/* 上排3个 */
.ab-culture-row-3 {
    grid-template-columns: repeat(3, 1fr);
}
/* 下排2个（居中，宽度=3列的两列宽，向上移动盖住上排1/3） */
.ab-culture-row-2 {
    grid-template-columns: repeat(2, 1fr);
    max-width: calc(2 / 3 * 100%);
    margin-left: auto;
    margin-right: auto;
    margin-top: -70px;  /* 上移 1/3 卡片高度（220px/3≈73px） */
    position: relative;
    z-index: 2;
}
.ab-culture-row-3 { position: relative; z-index: 1; }

/* 单张卡片 */
.ab-culture-list li {
    background: #fff;
    border-radius: 20px;
    padding: 40px 30px 36px;
    text-align: center;
    box-shadow: 0 6px 24px rgba(15, 23, 42, .06);
    transition: transform .28s ease, box-shadow .28s ease;
    width: 65%;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.ab-culture-list li:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(37, 99, 235, .16);
}

/* 上排浅色卡图标 */
.ab-culture-icon {
    width: 60px;
    height: 60px;
    line-height: 60px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2563eb, #0ea5e9);
    color: #fff;
    font-size: 26px;
}
.ab-culture-list h4 {
    font-size: 18px;
    font-weight: 700;
    color: #1f2937;
    margin: 0 0 10px;
}
.ab-culture-list p {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.75;
    margin: 0;
}

/* 上排浅色卡 — 平行四边形，向右倾斜 */
.ab-culture-list li.ab-card-light:nth-child(1),
.ab-culture-list li.ab-card-light:nth-child(2),
.ab-culture-list li.ab-card-light:nth-child(3) {
    background:
        url("../images/about_bg_1.png") center/cover no-repeat,
        url("../images/about_bg_2.png") center/cover no-repeat,
        url("../images/about_bg_3.png") center/cover no-repeat;
    transform: skewX(-12deg);
    min-height: 220px;
}
.ab-culture-list li.ab-card-light:nth-child(1) { background-image: url("../images/about_bg_1.png"); background-size: 140% 140%; }
.ab-culture-list li.ab-card-light:nth-child(2) { background-image: url("../images/about_bg_2.png"); background-size: 140% 140%; }
.ab-culture-list li.ab-card-light:nth-child(3) { background-image: url("../images/about_bg_3.png"); background-size: 140% 140%; }

.ab-culture-list li.ab-card-light {
    transform: skewX(-12deg);
}
.ab-culture-list li.ab-card-light:hover {
    box-shadow: 0 16px 40px rgba(37, 99, 235, .25);
}
/* 图标/文字反向倾斜，保持正常视觉 */
.ab-culture-list li.ab-card-light .ab-culture-icon,
.ab-culture-list li.ab-card-light h4,
.ab-culture-list li.ab-card-light p {
    transform: skewX(12deg);
}
.ab-culture-list li.ab-card-light .ab-culture-icon {
    background: rgba(0,0,0,.18);
    backdrop-filter: blur(4px);
}
.ab-culture-list li.ab-card-light h4 {
    color: #000000;
}
.ab-culture-list li.ab-card-light p {
    color: #000000;
}

/* 下排深色卡 */
.ab-culture-list li.ab-card-dark:nth-child(1) {
    background:
        url("../images/about_bg_4.png") center/cover no-repeat;
        background-size: 140% 140%;
    transform: skewX(-12deg);
    min-height: 220px;
}
.ab-culture-list li.ab-card-dark:nth-child(2) {
    background:
        url("../images/about_bg_5.png") center/cover no-repeat;
        background-size: 140% 140%;
    transform: skewX(-12deg);
    min-height: 220px;
}

.ab-culture-list li.ab-card-dark:hover {
    box-shadow: 0 16px 40px rgba(30, 58, 138, .25);
}

/* 图标/文字反向倾斜，保持正常视觉 */
.ab-culture-list li.ab-card-dark .ab-culture-icon,
.ab-culture-list li.ab-card-dark h4,
.ab-culture-list li.ab-card-dark p {
    transform: skewX(12deg);
}

.ab-culture-list li.ab-card-dark .ab-culture-icon {
    background: rgba(255,255,255,.18);
    backdrop-filter: blur(4px);
}
.ab-culture-list li.ab-card-dark h4 {
    color: #fff;
}
.ab-culture-list li.ab-card-dark p {
    color: rgba(255,255,255,.85);
}

/* number */
.ab-number-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
}
.ab-number-list li {
    flex: 1;
    text-align: center;
    color: #fff;
    padding: 10px 0;
    border-right: 1px solid rgba(255,255,255,.18);
}
.ab-number-list li:last-child { border-right: none; }
.ab-number-list b {
    display: block;
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 12px;
}
.ab-number-list b i {
    font-style: normal;
}
.ab-number-list b em {
    font-style: normal;
    font-size: 18px;
    padding-left: 6px;
    font-weight: 500;
    vertical-align: top;
}
.ab-number-list b sup {
    font-size: 22px;
    margin-left: 4px;
    vertical-align: top;
    font-weight: 500;
}
.ab-number-list p {
    font-size: 14px;
    color: rgba(255,255,255,.85);
    margin: 0;
    letter-spacing: 1px;
}

/* honor */
.ab-honor-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.ab-honor-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid #eef2f7;
    border-radius: 10px;
    padding: 14px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all .3s ease;
    box-shadow: 0 4px 14px rgba(31, 41, 55, .04);
}
.ab-honor-card:hover {
    border-color: #2563eb;
    transform: translateY(-4px);
    box-shadow: 0 14px 30px rgba(37, 99, 235, .18);
}
.ab-honor-card-img {
    background: #f3f5f8;
    border-radius: 6px;
    overflow: hidden;
    aspect-ratio: 16 / 11;
    display: flex;
    align-items: center;
    justify-content: center;
}
.ab-honor-card-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform .35s ease;
}
.ab-honor-card:hover .ab-honor-card-img img {
    transform: scale(1.04);
}
.ab-honor-card-cap {
    margin-top: 12px;
    padding: 4px 6px;
    text-align: center;
    color: #1f2937;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: .5px;
}
.ab-honor-card-cap span {
    display: block;
}

/* honor carousel */
.ab-honor-carousel {
    position: relative;
    display: flex;
    align-items: center;
    max-width: 100%;
    margin: 28px 0 12px;
    padding: 24px 72px;
}
.ab-honor-carousel-viewport {
    flex: 1;
    overflow: hidden;
    border-radius: 18px;
}
.ab-honor-carousel-track {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 20px;
    transition: transform .55s cubic-bezier(.22, .61, .36, 1);
    will-change: transform;
}
.ab-honor-carousel-item {
    flex: 0 0 calc((100% - 60px) / 4);
    aspect-ratio: 16 / 11;
    background: #fff;
    border: 1px solid #eef2f7;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 6px 18px rgba(31, 41, 55, .06);
    transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
    cursor: pointer;
}
.ab-honor-carousel-item:hover {
    transform: translateY(-4px);
    border-color: #2563eb;
    box-shadow: 0 16px 32px rgba(37, 99, 235, .18);
}
.ab-honor-carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .45s ease;
}
.ab-honor-carousel-item:hover img {
    transform: scale(1.05);
}
.ab-honor-carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #fff;
    color: #64748b;
    border: 1px solid #e2e8f0;
    box-shadow: 0 8px 22px rgba(15, 23, 42, .12);
    cursor: pointer;
    font-size: 20px;
    line-height: 46px;
    text-align: center;
    padding: 0;
    z-index: 5;
    transition: all .25s ease;
}
.ab-honor-carousel-btn:hover {
    background: #fff;
    color: #2563eb;
    border-color: #2563eb;
    box-shadow: 0 12px 26px rgba(37, 99, 235, .35);
    transform: translateY(-50%) scale(1.08);
}
.ab-honor-carousel-btn:active {
    transform: translateY(-50%) scale(.96);
}
.ab-honor-carousel-btn i {
    pointer-events: none;
}
.ab-honor-carousel-prev { left: 14px; }
.ab-honor-carousel-next { right: 14px; }
.ab-honor-carousel-btn[disabled] {
    opacity: .35;
    cursor: not-allowed;
    pointer-events: none;
}

/* certificate carousel */
.ab-certificate-carousel {
    position: relative;
    display: flex;
    align-items: center;
    max-width: 100%;
    margin: 32px 0 12px;
    padding: 24px 72px;
}
.ab-certificate-carousel-viewport {
    flex: 1;
    overflow: hidden;
}
.ab-certificate-carousel-track {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 24px;
    transition: transform .55s cubic-bezier(.22, .61, .36, 1);
    will-change: transform;
}
.ab-certificate-carousel-item {
    flex: 0 0 calc((100% - 72px) / 4);
    background: #fff;
    border: 1px solid #eef2f7;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 6px 18px rgba(31, 41, 55, .06);
    transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
    cursor: pointer;
    display: flex;
    align-items: stretch;
    background-clip: padding-box;
    position: relative;
}
.ab-certificate-carousel-item::before,
.ab-certificate-carousel-item::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    width: 8px;
    /* background: linear-gradient(180deg, #16a34a, #22c55e); */
    transition: width .25s ease;
}
.ab-certificate-carousel-item::before { left: 0; border-radius: 14px 0 0 14px; }
.ab-certificate-carousel-item::after { right: 0; border-radius: 0 14px 14px 0; }
.ab-certificate-carousel-item:hover {
    transform: translateY(-4px);
    border-color: #16a34a;
    box-shadow: 0 18px 36px rgba(22, 163, 74, .16);
}
.ab-certificate-carousel-item:hover::before,
.ab-certificate-carousel-item:hover::after {
    width: 10px;
}
.ab-certificate-carousel-item img {
    flex: 1;
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
    transition: transform .45s ease;
}
.ab-certificate-carousel-item:hover img {
    transform: scale(1.02);
}
.ab-certificate-carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #fff;
    color: #64748b;
    border: 1px solid #e2e8f0;
    box-shadow: 0 8px 22px rgba(15, 23, 42, .12);
    cursor: pointer;
    font-size: 20px;
    line-height: 46px;
    text-align: center;
    padding: 0;
    z-index: 5;
    transition: all .25s ease;
}
.ab-certificate-carousel-btn:hover {
    background: #fff;
    color: #16a34a;
    border-color: #16a34a;
    box-shadow: 0 12px 26px rgba(22, 163, 74, .28);
    transform: translateY(-50%) scale(1.08);
}
.ab-certificate-carousel-btn:active {
    transform: translateY(-50%) scale(.96);
}
.ab-certificate-carousel-btn i {
    pointer-events: none;
}
.ab-certificate-carousel-prev { left: 14px; }
.ab-certificate-carousel-next { right: 14px; }
.ab-certificate-carousel-btn[disabled] {
    opacity: .35;
    cursor: not-allowed;
    pointer-events: none;
}

/* honor lightbox */
.ab-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, .82);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 24px;
    animation: abFadeIn .25s ease;
}
.ab-lightbox.is-open { display: flex; }
@keyframes abFadeIn { from { opacity: 0; } to { opacity: 1; } }
.ab-lightbox-stage {
    max-width: 90vw;
    max-height: 86vh;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}
.ab-lightbox-img {
    max-width: 90vw;
    max-height: 78vh;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .45);
}
.ab-lightbox-cap {
    color: #f1f5f9;
    font-size: 14px;
    letter-spacing: 1px;
    margin: 0;
}
.ab-lightbox-close,
.ab-lightbox-prev,
.ab-lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, .15);
    color: #fff;
    border: none;
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    font-size: 18px;
    line-height: 44px;
    text-align: center;
    transition: background .2s ease;
}
.ab-lightbox-close:hover,
.ab-lightbox-prev:hover,
.ab-lightbox-next:hover {
    background: rgba(255, 255, 255, .32);
}
.ab-lightbox-close { top: 24px; right: 24px; font-size: 24px; }
.ab-lightbox-prev { left: 28px; top: 50%; transform: translateY(-50%); }
.ab-lightbox-next { right: 28px; top: 50%; transform: translateY(-50%); }

/* contact */
.ab-contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: stretch;
}
.ab-contact-info {
    background: linear-gradient(135deg, #1d4ed8, #0ea5e9);
    color: #fff;
    padding: 40px 36px;
    border-radius: 10px;
    box-shadow: 0 14px 40px rgba(13, 71, 161, .18);
}
.ab-contact-info h4 {
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 24px;
    color: #fff;
}
.ab-contact-info ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.ab-contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,.18);
    font-size: 14px;
    line-height: 1.7;
}
.ab-contact-info li:last-child { border-bottom: none; }
.ab-contact-info li i {
    width: 22px;
    flex-shrink: 0;
    font-size: 16px;
    margin-top: 2px;
}
.ab-contact-info li b { font-size: 18px; font-weight: 700; }
.ab-contact-info li em { font-style: normal; }

.ab-contact-map {
    border-radius: 10px;
    overflow: hidden;
    min-height: 320px;
    border: 1px solid #eef2f7;
}
.ab-map-placeholder {
    height: 100%;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    color: #475569;
    text-align: center;
    padding: 20px;
}
.ab-map-placeholder i {
    font-size: 56px;
    color: #2563eb;
    margin-bottom: 14px;
}
.ab-map-placeholder p {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 6px;
    color: #1f2937;
}
.ab-map-placeholder small {
    font-size: 13px;
    color: #64748b;
    line-height: 1.6;
}

/* partner marquee */
.ab-partner-section { background: #fff; overflow: hidden; }
.ab-marquee {
    position: relative;
    width: 100%;
    overflow: hidden;
    margin-bottom: 28px;
    -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
    mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}
.ab-marquee:last-child { margin-bottom: 0; }
.ab-marquee-track {
    display: flex;
    width: max-content;
    gap: 24px;
    will-change: transform;
}
.ab-marquee-left  { animation: ab-marquee-left  40s linear infinite; }
.ab-marquee-right { animation: ab-marquee-right 40s linear infinite; }
.ab-marquee:hover .ab-marquee-track { animation-play-state: paused; }
.ab-marquee-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-shrink: 0;
    gap: 24px;
}
.ab-marquee-list li {
    flex-shrink: 0;
    width: 200px;
    height: 110px;
    background: #fff;
    border: 1px solid #eef2f7;
    border-radius: 10px;
    overflow: hidden;
    transition: all .25s ease;
}
.ab-marquee-list li:hover {
    border-color: #2563eb;
    box-shadow: 0 10px 24px rgba(37, 99, 235, .18);
    transform: translateY(-3px);
}
.ab-marquee-list li a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 18px;
}
.ab-marquee-list li img {
    max-width: 100%;
    max-height: 60px;
    filter: grayscale(40%);
    opacity: .8;
    transition: all .25s ease;
}
.ab-marquee-list li:hover img {
    filter: grayscale(0);
    opacity: 1;
}
@keyframes ab-marquee-left {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}
@keyframes ab-marquee-right {
    from { transform: translateX(-50%); }
    to   { transform: translateX(0); }
}
.ab-partner-tip {
    margin-top: 36px;
    text-align: center;
    padding: 18px 0;
    border-top: 1px dashed #e2e8f0;
    font-size: 14px;
    color: #6b7280;
}
.ab-partner-tip a {
    color: #2563eb;
    text-decoration: none;
}

/* responsive */
@media (max-width: 992px) {
    .ab-culture-row-3 { grid-template-columns: repeat(2, 1fr); }
    .ab-culture-row-3 li:last-child { grid-column: 1 / -1; max-width: 50%; margin: 0 auto; }
    .ab-culture-row-2 { max-width: 100%; }
    .ab-honor-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
    .ab-partner-list { grid-template-columns: repeat(4, 1fr); }
    .ab-marquee-list li { width: 170px; height: 100px; }
    .ab-contact-wrap { grid-template-columns: 1fr; }
    .ab-intro-wrap { grid-template-columns: 1fr; gap: 24px; }
    .ab-intro-text { padding: 28px 20px; }
    .ab-certificate-carousel { padding: 24px 56px; }
    .ab-certificate-carousel-item { flex-basis: calc((100% - 48px) / 3); }
}
@media (max-width: 768px) {
    .ab-hero { padding: 60px 0 50px; }
    .ab-hero h2 { font-size: 26px; }
    .ab-section { padding: 50px 0; }
    .ab-section-head { margin-bottom: 32px; }
    .ab-section-head h3 { font-size: 22px; }
    .ab-section-head h3::before,
    .ab-section-head h3::after { width: 30px; }
    .ab-intro-text { padding: 24px 18px; }
    .ab-intro-image { aspect-ratio: 16 / 9; }
    .ab-culture-row-3 { grid-template-columns: 1fr; }
    .ab-culture-row-3 li:last-child { max-width: 100%; }
    .ab-culture-row-2 { grid-template-columns: 1fr; max-width: 100%; }
    .ab-culture-list li { padding: 28px 20px; }
    .ab-marquee-list li { width: 150px; height: 90px; }
    .ab-marquee-list { gap: 16px; }
    .ab-marquee-track { gap: 16px; }
    .ab-marquee-left, .ab-marquee-right { animation-duration: 28s; }
    .ab-number-list { flex-wrap: wrap; }
    .ab-number-list li { flex: 0 0 33.333%; border-right: none; padding: 18px 0; }
    .ab-number-list b { font-size: 32px; }
    .ab-honor-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .ab-honor-card { padding: 10px; }
    .ab-honor-card-cap { margin-top: 8px; font-size: 12px; }
    .ab-certificate-carousel { padding: 20px 48px; }
    .ab-certificate-carousel-item { flex-basis: calc((100% - 24px) / 2); }
    .ab-certificate-carousel-btn { width: 42px; height: 42px; line-height: 40px; font-size: 18px; }
}
@media (max-width: 480px) {
    .ab-culture-list li { min-height: 160px; }
    .ab-culture-list li.ab-card-dark { min-height: 180px; }
    .ab-number-list li { flex: 0 0 50%; }
    .ab-marquee-list li { width: 130px; height: 80px; }
    .ab-honor-carousel { padding: 18px 56px; }
    .ab-honor-carousel-item { flex-basis: calc((100% - 40px) / 3); }
    .ab-honor-carousel-btn { width: 40px; height: 40px; line-height: 38px; font-size: 18px; }
    .ab-honor-carousel-prev { left: 8px; }
    .ab-honor-carousel-next { right: 8px; }
    .ab-certificate-carousel { padding: 18px 48px; }
    .ab-certificate-carousel-item { flex-basis: calc((100% - 24px) / 2); }
    .ab-certificate-carousel-btn { width: 40px; height: 40px; line-height: 38px; font-size: 18px; }
    .ab-certificate-carousel-prev { left: 8px; }
    .ab-certificate-carousel-next { right: 8px; }
}

/* ========== office environment ========== */
.ab-office {
  background: #fafafa;
}
.ab-office-scroll {
  margin-top: 30px;
}
.ab-office-row {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  overflow: hidden;
  white-space: nowrap;
}
.ab-office-row img {
  height: 220px;
  width: 330px;
  object-fit: cover;
  border-radius: 10px;
  cursor: pointer;
  transition: all .3s ease;
  box-shadow: 0 4px 16px rgba(0,0,0,.1);
  flex-shrink: 0;
}
.ab-office-row-2 img {
  height: 260px;
  width: 390px;
}
.ab-office-row-2 {
  padding-left: 60px;
}
.ab-office-row img:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
}

/* ========== client case grid ========== */
.ab-client-case-grid {
  margin-top: 30px;
}
.ab-client-case-row {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  justify-content: center;
}
.ab-client-case-row img {
  flex: 1;
  max-width: calc((100% - 64px) / 5);
  height: 100px;
  object-fit: cover;
  border-radius: 10px;
  cursor: pointer;
  transition: all .3s ease;
  box-shadow: 0 4px 16px rgba(0,0,0,.1);
}
.ab-client-case-row img:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
}