/* ========== 5.01 - about Page - Start ========== */
.about_image_1 {
    position: relative;
    margin-left: -273px;
}

.about_image_1 img:nth-child(2) {
    top: 170px;
    left: 200px;
    max-width: 75px;
    position: absolute;
}

.about_image_1 img:nth-child(3) {
    right: 40px;
    bottom: 105px;
    max-width: 80px;
    position: absolute;
}

.about_and_case_section {
    padding: 180px 0 81px;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
}

.about_and_case_section .shape_image_1 {
    top: 0;
    left: 0;
    right: 0;
    text-align: center;
}

.about_and_case_section .shape_image_1 img {
    width: calc(100% - 530px);
    transform: translateX(5px);
}

.about_image_2 {
    gap: 20px;
    display: flex;
    position: relative;
    align-items: flex-start;
    margin-left: 50px;
}

.about_image_2 .image_wrap {
    flex: 0 0 auto;
    max-width: 198px;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.about_image_2 .space_line {
    top: 142px;
    left: 218px;
    max-width: 368px;
    position: absolute;
}

.about_funfact_info {
    z-index: 1;
    width: 472px;
    flex: 0 0 auto;
    padding: 20px 30px;
    position: relative;
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-position: center center;
}

.about_funfact_info .customer_count > ul {
    margin-bottom: 12px;
}

.about_funfact_info .customer_count > ul > li {
    width: 50px;
    height: 50px;
    font-size: 15px;
    overflow: hidden;
    line-height: 28px;
    border-radius: 100%;
    align-items: center;
    display: inline-flex;
    color: var(--text-white);
    justify-content: center;
    border: 2px solid var(--text-white);
    background-color: var(--primary-color);
}

.about_funfact_info .customer_count > ul > li:not(:first-child) {
    margin-left: -15px;
}

.about_funfact_info .about_funfact_counter {
    gap: 50px;
    display: flex;
    margin-top: 46px;
    justify-content: flex-end;
}

.about_funfact_info .about_funfact_counter .counter_value {
    line-height: 1;
    font-size: 45px;
    font-weight: 700;
    display: inline-flex;
    color: var(--text-primary);
    font-family: var(--bs-font-sans-serif);
}

.about_funfact_info .about_funfact_counter .funfact_title {
    color: var(--text-muted);
    font-size: 16px;
    font-weight: 400;
    font-family: var(--bs-font-sans-serif);
}

.about_funfact_info .btn {
    top: 0;
    right: -5px;
    position: absolute;
    border-radius: var(--radius-sm);
    padding: 0 20px;
}

.about_funfact_info .icon_globe {
    left: 22px;
    bottom: 22px;
    max-width: 40px;
    position: absolute;
}

.about_funfact_info .icon_globe:before,
.about_funfact_info .icon_globe:after {
    top: 0;
    left: 0;
    width: 100%;
    content: '';
    height: 100%;
    position: absolute;
    border-radius: 100%;
    transition: var(--transition-normal);
    animation: ripple 1.5s linear infinite;
    border: 1px solid var(--text-white);
}

.about_funfact_info .icon_globe:after {
    animation-delay: 0.9s;
}

.about_image_3 {
    position: relative;
}

.about_image_3 .image_wrap {
    overflow: hidden;
    border-radius: var(--radius-md);
}

.about_image_3 .funfact_block {
    left: -154px;
    bottom: 85px;
    position: absolute;
}

.about_image_3 .funfact_block .funfact_icon {
    background-color: var(--warning-color);
}

body:has(.page_banner_section + .intro_about_section) .page_banner_section {
    padding-bottom: 394px;
}

.intro_about_section .intro_about_content {
    z-index: 1;
    position: relative;
    margin: -420px 0 60px;
}

.intro_about_section .intro_about_content .image_wrap {
    overflow: hidden;
    border-radius: var(--radius-sm);
}

/* ========== 5.01 - about Page - End ========== */

/* ========== 4.03 - Case Study - Start ========== */
.case_study_block {
    display: flex;
    overflow: hidden;
    align-items: center;
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    position: sticky;
    top: 100px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.case_study_block:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: var(--primary-alpha-20);
}

.case_study_block:not(:last-child) {
    margin-bottom: 30px;
}

.case_study_block .case_study_image {
    order: 0;
    flex: 0 0 auto;
    max-width: 465px;
    overflow: hidden;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.case_study_block .case_study_image img {
    transition: var(--transition-slow);
}

.case_study_block:hover .case_study_image img {
    transform: scale(1.05);
}

.case_study_block .case_study_content {
    padding: 50px 140px 50px 80px;
    flex: 1;
}

.case_study_block .case_title {
    font-size: 30px;
    line-height: 40px;
    margin: 16px 0 24px;
    font-weight: 600;
}

.case_study_block .case_title a {
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.case_study_block .case_title a:hover {
    color: var(--primary-color);
}

.case_study_block p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.case_study_block .icon_list {
    gap: 10px 50px;
    margin-bottom: 30px;
}

.case_study_block .case_technologies {
    gap: 20px;
    margin-bottom: 26px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.case_study_block .case_technologies:before {
    font-size: 18px;
    font-weight: 500;
    margin-right: 40px;
    color: var(--text-primary);
    display: inline-block;
    content: attr(data-text);
    font-family: var(--bs-font-sans-serif);
}

.case_study_block .case_technologies > li {
    width: 58px;
    height: 58px;
    flex: 0 0 auto;
    border-radius: 100%;
    align-items: center;
    display: inline-flex;
    justify-content: center;
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.case_study_block .case_technologies > li:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.case_study_block .case_technologies > li img {
    max-width: 30px;
    transition: var(--transition-fast);
}

.case_study_block .case_technologies > li:hover img {
    transform: scale(1.1);
}

/* ========== 4.03 - Case Study - End ========== */

/* ========== 优势特点区域优化样式 ========== */
.adv-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg) !important;
    padding: 2.5rem 2rem !important;
    text-align: center;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    height: 100%;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm) !important;
}

.adv-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--primary-alpha-10), transparent);
    transition: left 0.5s ease;
    z-index: 1;
}

.adv-card:hover {
    transform: translateY(-12px);
    background: var(--bg-white);
    box-shadow: var(--shadow-xl) !important;
    border-color: var(--primary-alpha-20);
}

.adv-card:hover::before {
    left: 100%;
}

.adv-card .adv-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 1.5rem !important;
    transition: var(--transition-normal);
    filter: drop-shadow(0 4px 12px var(--primary-alpha-20));
    position: relative;
    z-index: 2;
    color: var(--primary-color);
}

.adv-card:hover .adv-icon {
    transform: scale(1.15) rotate(10deg);
    filter: drop-shadow(0 8px 20px var(--primary-alpha-90));
}

.adv-card h4 {
    font-size: 1.3rem !important;
    font-weight: 700 !important;
    margin-bottom: 1.2rem !important;
    color: var(--text-primary);
    position: relative;
    z-index: 2;
    transition: var(--transition-fast);
}

.adv-card:hover h4 {
    color: var(--primary-color);
}

.adv-card p {
    color: var(--text-secondary) !important;
    line-height: 1.7;
    margin: 0 !important;
    font-size: 1rem !important;
    position: relative;
    z-index: 2;
    transition: var(--transition-fast);
}

.adv-card:hover p {
    color: var(--text-primary) !important;
}

/* 添加一个微妙的脉冲动画 */
@keyframes pulse {
    0%, 100% {
        box-shadow: var(--shadow-sm);
    }
    50% {
        box-shadow: var(--shadow-md);
    }
}

.adv-card:nth-child(odd) {
    animation: pulse 4s ease-in-out infinite;
    animation-delay: 0s;
}

.adv-card:nth-child(even) {
    animation: pulse 4s ease-in-out infinite;
    animation-delay: 2s;
}

.adv-card:hover {
    animation: none;
}


/* ============================== 固定背景层 ============================== */


.advantages,
.section-bg-fixed {
    position: relative;
    z-index: 0;
    isolation: isolate;
}



.advantages::before,
.section-bg-fixed::before {
    content: "";
    position: absolute;
    inset: 0;
    background-position: center;
    background-size:cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    z-index: -1;
    filter: brightness(.8);
}

.section-bg-fixed::before {
    background-image: url("/assets/images/bg_img/bg-image-5.jpg");
    filter: contrast(1) brightness(0.6);
}

.advantages .row .adv-card {
    background: linear-gradient(var(--bg-section), var(--bg-light));
}

@media (max-width: 767.98px) {
    /* 移动端禁用固定背景 */
    .advantages::before,
    .section-bg-fixed::before {
        background-attachment: scroll;
        background-size:auto 100%;
    }
}







/* ========== 状态指示器 ========== */
.case-status {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.case-status.completed {
    background: var(--accent-color);
    color: var(--text-white);
}

.case-status.in-progress {
    background: var(--warning-color);
    color: var(--text-white);
}

.case-status.planning {
    background: var(--primary-color);
    color: var(--text-white);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1199.98px) {
    .case_study_block .case_study_content {
        padding: 40px 80px 40px 60px;
    }

    .case_study_block .case_title {
        font-size: 26px;
        line-height: 36px;
    }
}

@media (max-width: 991.98px) {
    .case_study_block {
        flex-direction: column;
        position: static;
    }

    .case_study_block .case_study_image {
        max-width: 100%;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }

    .case_study_block .case_study_content {
        padding: 30px;
    }

    .adv-card {
        padding: 2rem 1.5rem !important;
        margin-bottom: 1.5rem;
    }

    .adv-card .adv-icon {
        width: 64px;
        height: 64px;
    }

    .adv-card h4 {
        font-size: 1.2rem !important;
    }

    .adv-card p {
        font-size: 0.95rem !important;
    }
}

@media (max-width: 767.98px) {
    .about_and_case_section.section-bg-fixed {
        padding: 60px 0;
    }

    .case_study_block .case_technologies:before {
        margin-right: 20px;
        font-size: 16px;
    }

    .adv-card {
        padding: 1.8rem 1.3rem !important;
    }

    .adv-card .adv-icon {
        width: 56px;
        height: 56px;
        margin-bottom: 1.2rem !important;
    }

    .adv-card h4 {
        font-size: 1.1rem !important;
        margin-bottom: 1rem !important;
    }

    .adv-card p {
        font-size: 0.9rem !important;
        line-height: 1.6;
    }
}

@media (max-width: 575.98px) {
    .about_and_case_section.section-bg-fixed {
        padding: 50px 0;
    }

    .case_study_block .case_study_content {
        padding: 20px;
    }

    .case_study_block .case_title {
        font-size: 22px;
        line-height: 30px;
    }

    .case_study_block .case_technologies {
        gap: 15px;
    }

    .case_study_block .case_technologies > li {
        width: 48px;
        height: 48px;
    }

    .adv-card {
        padding: 1.5rem 1rem !important;
        border-radius: var(--radius-md) !important;
    }

    .adv-card .adv-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 1rem !important;
    }

    .adv-card h4 {
        font-size: 1rem !important;
        margin-bottom: 0.8rem !important;
    }

    .adv-card p {
        font-size: 0.85rem !important;
        line-height: 1.5;
    }
}

/* ========== 性能优化 ========== */
.adv-card .adv-icon {
    will-change: transform;
}

.adv-card {
    will-change: transform, box-shadow;
}

.case_study_block .case_study_image img {
    will-change: transform;
}

/* ========== 动画效果 ========== */
@keyframes ripple {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    100% {
        transform: scale(2.4);
        opacity: 0;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.case_study_block {
    animation: fadeInUp 0.6s ease-out;
}

/* ========== 无障碍支持 ========== */
.adv-card:focus-visible,
.case_study_block:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 4px;
}

/* ========== 高对比度模式 ========== */
@media (prefers-contrast: high) {
    .adv-card,
    .case_study_block {
        border: 2px solid var(--text-primary);
    }

    .case_study_block .case_technologies > li {
        border: 2px solid var(--text-primary);
    }
}

/* ========== 减少动画偏好设置 ========== */
@media (prefers-reduced-motion: reduce) {
    .adv-card,
    .case_study_block,
    .case_study_block .case_study_image img,
    .case_study_block .case_technologies > li {
        animation: none;
        transition: none;
    }

    .adv-card:hover,
    .case_study_block:hover {
        transform: none;
    }
}