/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    /* 优化字体栈，不同平台显示最优字体 */
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #333;
    font-size: 14px;
    line-height: 1.6;
}
/* 自定义滚动条，和主色调统一 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2c5c97;
}
ul, li {
    list-style: none;
}
a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
img {
    max-width: 100%;
    border: none;
    vertical-align: middle;
}
/* 统一过渡缓动函数，更顺滑高级 */
div, button, a, li {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全屏滚动容器 */
#wrap {
    width: 100%;
    height: 100%;
    position: relative;
}
.num {
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
}
.width_1200 {
    width: 1200px;
    margin: 0 auto;
}

/* 导航栏 */
#nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: rgba(255,255,255,0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 999;
    box-shadow: 0 1px 30px rgba(0,0,0,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.2);
}
.nav {
    width: 1200px;
    margin: 0 auto;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    height: 40px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}
.logo img {
    height: 40px;
    width: auto;
}
.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: #2c5c97;
    letter-spacing: 1px;
    margin: 0;
}
.nav ul {
    display: flex;
    align-items: center;
    gap: 40px;
}
.nav ul li a {
    font-size: 15px;
    color: #475569;
    font-weight: 500;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    line-height: 70px;
    display: block;
    position: relative;
}
.nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2c5c97;
    border-radius: 1px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav ul li a:hover, .nav ul li a.active {
    color: #2c5c97;
}
.nav ul li a:hover::after, .nav ul li a.active::after {
    width: 100%;
}
.hotline {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    color: #2c5c97;
}
.hotline img {
    height: 20px;
}
#nav0 {
    display: none;
}

/* 安全轮播，CSS默认显示第一屏，JS失效也不空白 */
.banner-slider {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}
.banner-list {
    width: 100%;
    height: 100%;
    position: relative;
}
.banner-item {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.8s;
}
/* CSS默认显示第一屏，JS不执行也不空白 */
.banner-item.active {
    opacity: 1;
    visibility: visible;
}
.banner-item-1 {
    background: linear-gradient(90deg, rgba(15, 35, 70, 0.85) 0%, rgba(44, 92, 151, 0.5) 50%, rgba(44, 92, 151, 0.2) 100%), url(../images/banner1.jpg) no-repeat center/cover;
}
.banner-item-2 {
    background: linear-gradient(90deg, rgba(20, 50, 90, 0.8) 0%, rgba(44, 92, 151, 0.4) 50%, rgba(44, 92, 151, 0.15) 100%), url(../images/banner2.jpg) no-repeat center/cover;
}
.banner-item-3 {
    background: linear-gradient(90deg, rgba(25, 40, 80, 0.85) 0%, rgba(60, 70, 160, 0.5) 50%, rgba(60, 70, 160, 0.2) 100%), url(../images/banner3.jpg) no-repeat center/cover;
}
/* banner装饰元素 */
.banner-deco {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}
.deco-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.1);
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
}
.deco-circle-1 {
    width: 600px;
    height: 600px;
    right: -100px;
    top: -200px;
    animation: float 8s ease-in-out infinite;
}
.deco-circle-2 {
    width: 300px;
    height: 300px;
    right: 200px;
    bottom: -100px;
    animation: float 6s ease-in-out infinite reverse;
}
.deco-circle-3 {
    width: 400px;
    height: 400px;
    right: -50px;
    bottom: -150px;
    animation: float 7s ease-in-out infinite;
}
.deco-circle-4 {
    width: 500px;
    height: 500px;
    right: -80px;
    top: -150px;
    animation: float 9s ease-in-out infinite reverse;
}
.deco-square {
    position: absolute;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    background: rgba(255,255,255,0.03);
    transform: rotate(15deg);
}
.deco-square-1 {
    width: 200px;
    height: 200px;
    right: 150px;
    top: 100px;
    animation: rotate 20s linear infinite;
}
.deco-line {
    position: absolute;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    top: 30%;
}
.deco-grid {
    position: absolute;
    right: 10%;
    top: 20%;
    width: 300px;
    height: 300px;
    background-image: 
        linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.5;
    border-radius: 50%;
}
.deco-dots {
    position: absolute;
    right: 15%;
    bottom: 20%;
    width: 200px;
    height: 200px;
    background-image: radial-gradient(rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.6;
}
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.banner-text {
    position: absolute;
    left: 100px;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    max-width: 700px;
}
.banner-subtitle {
    font-size: 16px;
    letter-spacing: 3px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 24px;
    font-weight: 400;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 12px;
}
.sub-line {
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, #fff, rgba(255,255,255,0.3));
}
.banner-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.banner-tags {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
}
.banner-tag {
    padding: 6px 14px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    font-size: 13px;
    color: rgba(255,255,255,0.9);
}
.banner-desc {
    font-size: 19px;
    font-weight: 300;
    line-height: 1.7;
    color: rgba(255,255,255,0.85);
    margin-bottom: 40px;
    max-width: 600px;
}
.banner-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 42px;
    background: #fff;
    color: #2c5c97;
    font-size: 16px;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}
.banner-btn svg {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.banner-btn:hover {
    background: #fff;
    color: #1e4572;
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.banner-btn:hover svg {
    transform: translateX(4px);
}
/* 轮播指示器 */
.banner-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 12px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.banner-dots .dot {
    width: 12px;
    height: 6px;
    background: rgba(255,255,255,0.4);
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.banner-dots .dot:hover {
    background: rgba(255,255,255,0.8);
    transform: scale(1.1);
}
.banner-dots .dot.active {
    width: 24px;
    background: #fff;
}
/* 隐藏旧元素 */
.banner-fixed, .slideBox, .hd, .bd {
    display: none !important;
}

/* 板块通用标题 */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}
.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, #2c5c97, #4facfe);
    border-radius: 2px;
}
.section-title p {
    font-size: 14px;
    color: #94a3b8;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 20px;
}

/* 核心服务 */
.server {
    background: #f8fafc;
    padding: 60px 0;
    height: 100vh;
    display: flex;
    align-items: center;
}
.server ul {
    display: flex;
    gap: 20px;
    justify-content: center;
}
.server ul li {
    flex: 1;
    background: #fff;
    border-radius: 16px;
    padding: 36px 24px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    border: 1px solid #f1f5f9;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.server ul li:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(44,92,151,0.12);
    border-color: rgba(44,92,151,0.1);
}
.server ul li:hover .service-icon {
    transform: scale(1.1);
}
.service-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.server ul li h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 12px;
}
.server ul li p {
    font-size: 14px;
    color: #64748b;
    line-height: 1.7;
}

/* 客户案例 */
.case {
    background: #fff;
    padding: 60px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}
.case_ul_wrap {
    width: 1200px;
    margin: 0 auto;
}
.case-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.case-card {
    background: #fff;
    border-radius: 12px;
    padding: 24px 20px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.05);
    border: 1px solid #f0f0f0;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}
.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: #2c5c97;
    transform: scaleY(0);
    transition: transform 0.3s;
}
.case-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(44,92,151,0.12);
    border-color: #2c5c97;
}
.case-card:hover::before {
    transform: scaleY(1);
}
.case-tag {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(44,92,151,0.1);
    color: #2c5c97;
    font-size: 12px;
    border-radius: 4px;
    margin-bottom: 12px;
    font-weight: 500;
}
.case-card-title {
    font-size: 17px;
    font-weight: 600;
    color: #222;
    margin-bottom: 8px;
}
.case-card-desc {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-card-btn {
    font-size: 13px;
    color: #2c5c97;
    font-weight: 500;
    transition: all 0.3s;
}
.case-card:hover .case-card-btn {
    color: #1e4572;
    transform: translateX(4px);
}

/* 案例详情弹窗 */
.case-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
}
.case-modal.active {
    display: flex;
}
.case-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
}
.case-modal-content {
    position: relative;
    width: 560px;
    max-width: 90%;
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: modalIn 0.3s ease;
}
@keyframes modalIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}
.case-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 32px;
    height: 32px;
    border: none;
    background: #f1f5f9;
    border-radius: 50%;
    font-size: 20px;
    color: #64748b;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.case-modal-close:hover {
    background: #ef4444;
    color: #fff;
    transform: rotate(90deg);
}
.case-modal-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(44,92,151,0.1);
    color: #2c5c97;
    font-size: 13px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-weight: 500;
}
.case-modal-title {
    font-size: 24px;
    font-weight: 700;
    color: #222;
    margin-bottom: 28px;
    line-height: 1.3;
}
.case-modal-section {
    margin-bottom: 20px;
}
.case-modal-label {
    font-size: 13px;
    color: #888;
    font-weight: 500;
    margin-bottom: 6px;
}
.case-modal-text {
    font-size: 15px;
    color: #333;
    line-height: 1.7;
}
.case-modal-btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #2c5c97 0%, #1e4572 100%);
    color: #fff;
    text-align: center;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 500;
    margin-top: 30px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.case-modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(44,92,151,0.3);
}

/* 我们的优势 */
#num_3 {
    background: #f8fafc;
    padding: 60px 0;
    height: 100vh;
    display: flex;
    align-items: center;
}
.teachshow {
    width: 100%;
}
.mr_frbox {
    position: relative;
}
.mr_frUl ul {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.mr_frUl ul li {
    background: #fff;
    border-radius: 16px;
    padding: 30px 24px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    border: 1px solid #f1f5f9;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
}
.mr_frUl ul li:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(44,92,151,0.1);
    border-color: rgba(44,92,151,0.1);
}
.mr_frUl ul li:hover .advantage-icon {
    transform: scale(1.1);
}
.advantage-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.mr_frUl ul li div h4 {
    font-size: 17px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 10px;
}
.mr_frUl ul li div p {
    font-size: 14px;
    color: #64748b;
    line-height: 1.7;
}

/* 联系我们 */
#num_4 {
    background: #f8fafc;
    height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}
.cont {
    flex: 1;
    width: 100%;
    display: flex;
    align-items: center;
    padding: 60px 0 0;
}
.contact-cards {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-top: 50px;
}
.contact-card {
    flex: 1;
    max-width: 340px;
    background: #fff;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    border: 1px solid #f1f5f9;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    color: inherit;
    display: block;
}
.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.08);
    border-color: rgba(44,92,151,0.1);
}
.contact-card-primary {
    background: linear-gradient(135deg, #2c5c97 0%, #1e4572 100%);
    color: #fff;
    transform: scale(1.05);
    border: none;
    box-shadow: 0 8px 30px rgba(44,92,151,0.2);
}
.contact-card-primary:hover {
    transform: scale(1.05) translateY(-8px);
    box-shadow: 0 20px 50px rgba(44,92,151,0.35);
}
.contact-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}
.contact-label {
    font-size: 15px;
    opacity: 0.8;
    margin-bottom: 12px;
    font-weight: 400;
}
.contact-value {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.3;
}
.contact-value-big {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 1px;
}
.contact-tip {
    font-size: 13px;
    opacity: 0.7;
}

/* 页脚 */
.foot {
    background: #1a2b42;
    padding: 20px 0;
    color: rgba(255,255,255,0.7);
    width: 100%;
}
.foot-content {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}
.foot-content a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
}
.foot-content a:hover {
    color: #fff;
}

/* 悬浮客服 */
.xuanfu {
    position: fixed;
    right: 20px;
    bottom: 40px;
    z-index: 999;
}
.xuanfu a {
    display: flex;
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #2c5c97 0%, #1e4572 100%);
    border-radius: 50%;
    margin-bottom: 12px;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 12px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 6px 20px rgba(44,92,151,0.3);
}
.xuanfu a:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 10px 25px rgba(44,92,151,0.4);
}
.xuanfu a img {
    width: 24px;
    height: 24px;
}
#weixin, #ewm, #fk {
    display: none !important;
}

/* 响应式适配 - 平板 */
@media screen and (max-width: 1199px) {
    .width_1200 {
        width: 95%;
    }
    .nav {
        width: 95%;
    }
    .nav ul {
        gap: 25px;
    }
    .server ul {
        flex-wrap: wrap;
    }
    .server ul li {
        flex: 0 0 calc(50% - 10px);
    }
    .case-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .mr_frUl ul {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-cards {
        flex-wrap: wrap;
    }
    .contact-card {
        flex: 0 0 calc(50% - 12px);
        max-width: none;
    }
    .contact-card-primary {
        transform: none;
    }
    .contact-card-primary:hover {
        transform: translateY(-8px);
    }
}

/* 响应式适配 - 手机 */
@media screen and (max-width: 767px) {
    html, body {
        overflow: auto !important;
        height: auto !important;
    }
    #wrap {
        height: auto !important;
        position: static !important;
        top: 0 !important;
    }
    .num {
        height: auto !important;
        min-height: auto !important;
        padding: 80px 0 60px;
        overflow: visible !important;
    }
    /* 导航栏适配 */
    #nav {
        height: 60px;
    }
    .nav {
        height: 60px;
    }
    .logo {
        height: 32px;
    }
    .logo img {
        height: 32px;
    }
    .logo-text {
        font-size: 17px;
    }
    .nav ul {
        gap: 15px;
    }
    .nav ul li a {
        font-size: 14px;
        line-height: 60px;
    }
    .hotline span {
        display: none;
    }
    .hotline {
        gap: 0;
    }
    /* 轮播适配 */
    .banner-slider {
        height: 50vh;
        min-height: 320px;
    }
    .banner-deco {
        display: none;
    }
    .banner-text {
        left: 20px;
        right: 20px;
        max-width: none;
    }
    .banner-subtitle {
        font-size: 13px;
        margin-bottom: 12px;
        letter-spacing: 1px;
        gap: 8px;
    }
    .sub-line {
        width: 24px;
    }
    .banner-title {
        font-size: 28px;
        margin-bottom: 12px;
    }
    .banner-tags {
        gap: 8px;
        margin-bottom: 16px;
    }
    .banner-tag {
        padding: 4px 10px;
        font-size: 12px;
    }
    .banner-desc {
        font-size: 15px;
        margin-bottom: 25px;
    }
    .banner-btn {
        padding: 12px 28px;
        font-size: 15px;
        gap: 6px;
    }
    .banner-dots {
        bottom: 20px;
    }
    /* 板块标题适配 */
    .section-title {
        margin-bottom: 30px;
    }
    .section-title h2 {
        font-size: 24px;
    }
    .section-title p {
        font-size: 12px;
        margin-top: 16px;
    }
    /* 核心服务适配 */
    .server {
        padding: 60px 0;
        align-items: flex-start;
    }
    .server ul {
        gap: 12px;
    }
    .server ul li {
        flex: 0 0 calc(50% - 6px);
        padding: 24px 16px;
        border-radius: 12px;
    }
    .service-icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        margin-bottom: 16px;
    }
    .service-icon svg {
        width: 24px;
        height: 24px;
    }
    .server ul li h3 {
        font-size: 15px;
        margin-bottom: 8px;
    }
    .server ul li p {
        font-size: 13px;
        line-height: 1.6;
    }
    /* 客户案例适配 */
    .case {
        padding: 60px 0;
        align-items: flex-start;
    }
    .case-list {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .case-card {
        padding: 20px 16px;
        border-radius: 12px;
    }
    .case-card-title {
        font-size: 16px;
    }
    /* 我们的优势适配 */
    #num_3 {
        padding: 60px 0;
        align-items: flex-start;
    }
    .mr_frUl ul {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .mr_frUl ul li {
        padding: 24px 16px;
        border-radius: 12px;
    }
    .advantage-icon {
        width: 44px;
        height: 44px;
        border-radius: 10px;
        margin-bottom: 16px;
    }
    .advantage-icon svg {
        width: 22px;
        height: 22px;
    }
    .mr_frUl ul li div h4 {
        font-size: 15px;
        margin-bottom: 8px;
    }
    .mr_frUl ul li div p {
        font-size: 13px;
        line-height: 1.6;
    }
    /* 联系我们适配 */
    #num_4 {
        height: auto !important;
        min-height: auto !important;
    }
    .cont {
        padding: 60px 0 40px;
    }
    .contact-cards {
        flex-direction: column;
        gap: 16px;
        margin-top: 30px;
    }
    .contact-card {
        max-width: none;
        width: 100%;
        padding: 30px 20px;
    }
    .contact-card-primary {
        transform: none;
    }
    .contact-card-primary:hover {
        transform: translateY(-6px);
    }
    /* 案例弹窗适配 */
    .case-modal-content {
        padding: 28px 20px;
        width: 92%;
        border-radius: 12px;
    }
    .case-modal-title {
        font-size: 20px;
        margin-bottom: 20px;
    }
    .case-modal-close {
        top: 16px;
        right: 16px;
        width: 28px;
        height: 28px;
        font-size: 18px;
    }
    .case-modal-btn {
        padding: 12px;
        font-size: 15px;
        margin-top: 24px;
    }
    /* 悬浮按钮适配 */
    .xuanfu {
        right: 15px;
        bottom: 20px;
    }
    .xuanfu a {
        width: 44px;
        height: 44px;
        margin-bottom: 10px;
    }
    .xuanfu a img {
        width: 20px;
        height: 20px;
    }
    /* 页脚适配 */
    footer {
        padding: 20px 0;
        font-size: 12px;
    }
}

/* 案例卡片新样式 带渐变封面 */
.case-card {
    padding: 0 !important;
    border-radius: 16px !important;
}
.case-card::before {
    display: none !important;
}
.case-cover {
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.case-cover svg {
    width: 48px;
    height: 48px;
    color: #fff;
    position: relative;
    z-index: 1;
    opacity: 0.9;
}
.cover-allcase {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}
.cover-geo {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}
.cover-reputation {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.cover-wom {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}
.case-tag {
    position: absolute !important;
    top: 16px !important;
    left: 16px !important;
    background: rgba(255,255,255,0.9) !important;
    backdrop-filter: blur(10px);
    padding: 4px 12px !important;
    border-radius: 20px !important;
    font-size: 12px !important;
    color: #333 !important;
    font-weight: 500;
    z-index: 2;
    margin: 0 !important;
}
.case-card-title {
    font-size: 18px;
    font-weight: 600;
    color: #222;
    padding: 20px 24px 8px !important;
    margin: 0 !important;
}
.case-card-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    padding: 0 24px 20px !important;
    margin: 0 !important;
}
.case-card-btn {
    padding: 0 24px 24px !important;
    font-size: 14px;
    color: #2c5c97;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.3s ease;
    margin: 0 !important;
}
.case-modal-text {
    line-height: 1.8 !important;
}
.case-modal-text b {
    color: #2c5c97;
    font-weight: 600;
}
/* 案例卡片简洁版样式 */
.case-cover {
    height: 80px !important;
}
.case-cover svg {
    display: none !important;
}
.case-card-title {
    padding: 16px 20px 6px !important;
    font-size: 17px !important;
}
.case-card-desc {
    padding: 0 20px 16px !important;
    font-size: 13px !important;
}
.case-card-btn {
    padding: 0 20px 20px !important;
    font-size: 13px !important;
}
.case-tag {
    top: 12px !important;
    left: 12px !important;
    font-size: 11px !important;
    padding: 3px 10px !important;
}
/* 案例网格对齐 */
.case-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    align-items: stretch;
}
.case-card {
    height: 100%;
}
/* 案例PC端4列 一屏显示所有案例 */
.case-list {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 16px !important;
}
.case-cover {
    height: 60px !important;
}
.case-card-title {
    padding: 12px 16px 4px !important;
    font-size: 15px !important;
}
.case-card-desc {
    padding: 0 16px 12px !important;
    font-size: 12px !important;
    line-height: 1.5 !important;
}
.case-card-btn {
    padding: 0 16px 16px !important;
    font-size: 12px !important;
}
.case-tag {
    top: 10px !important;
    left: 10px !important;
    font-size: 10px !important;
    padding: 2px 8px !important;
}
/* 案例屏不截断内容 */
#num_2 {
    height: auto !important;
    min-height: 100vh !important;
    overflow: visible !important;
    padding: 80px 0 60px !important;
    align-items: flex-start !important;
}
/* 平板端2列 */
@media (max-width: 1024px) {
    .case-list {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 16px !important;
    }
}
/* 手机端1列 */
@media (max-width: 768px) {
    .case-list {
        grid-template-columns: 1fr !important;
        gap: 12px !important;
    }
    .case-cover {
        height: 70px !important;
    }
}
/* 修复案例屏整屏高度 不占用下一屏 */
#num_2 {
    height: 100vh !important;
    min-height: 100vh !important;
    overflow: hidden !important;
    padding: 70px 0 40px !important;
    align-items: center !important;
    box-sizing: border-box;
}
/* 案例标题紧凑 */
#num_2 .section-title {
    margin-bottom: 24px !important;
}
#num_2 .section-title h2 {
    font-size: 28px !important;
    margin-bottom: 6px !important;
}
#num_2 .section-title p {
    font-size: 14px !important;
}
/* 案例卡片更紧凑 一屏放下 */
.case-list {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 12px !important;
}
.case-cover {
    height: 50px !important;
}
.case-card-title {
    padding: 10px 14px 4px !important;
    font-size: 14px !important;
    line-height: 1.3 !important;
}
.case-card-desc {
    padding: 0 14px 10px !important;
    font-size: 12px !important;
    line-height: 1.4 !important;
    /* 描述最多2行 省略 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-card-btn {
    padding: 0 14px 14px !important;
    font-size: 12px !important;
}
.case-tag {
    top: 8px !important;
    left: 8px !important;
    font-size: 10px !important;
    padding: 2px 8px !important;
}
/* 平板及以下 流式布局 案例自动高度 */
@media (max-width: 1023px) {
    #num_2 {
        height: auto !important;
        min-height: auto !important;
        overflow: visible !important;
        padding: 60px 0 40px !important;
    }
    .case-list {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 16px !important;
    }
    .case-cover {
        height: 70px !important;
    }
    .case-card-title {
        font-size: 16px !important;
        padding: 14px 18px 6px !important;
    }
    .case-card-desc {
        font-size: 13px !important;
        padding: 0 18px 14px !important;
        -webkit-line-clamp: unset !important;
        overflow: visible !important;
    }
    .case-card-btn {
        padding: 0 18px 18px !important;
        font-size: 13px !important;
    }
}
/* 手机端 1列 */
@media (max-width: 767px) {
    .case-list {
        grid-template-columns: 1fr !important;
        gap: 12px !important;
    }
}
/* 12个核心案例 4列3行 宽松排版 */
.case-list {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 20px !important;
}
.case-cover {
    height: 70px !important;
}
.case-card-title {
    padding: 16px 20px 8px !important;
    font-size: 16px !important;
}
.case-card-desc {
    padding: 0 20px 16px !important;
    font-size: 13px !important;
    line-height: 1.6 !important;
    -webkit-line-clamp: 2;
}
.case-card-btn {
    padding: 0 20px 20px !important;
    font-size: 13px !important;
}
.case-tag {
    top: 12px !important;
    left: 12px !important;
    font-size: 11px !important;
    padding: 3px 10px !important;
}
#num_2 {
    padding: 80px 0 60px !important;
}
/* 案例卡片 细渐变顶边 简洁高级 */
.case-cover {
    height: 4px !important;
    border-radius: 16px 16px 0 0 !important;
}
.case-tag {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    display: inline-block !important;
    margin: 16px 20px 0 !important;
    font-size: 11px !important;
    padding: 2px 8px !important;
    border-radius: 4px !important;
}
.case-card-title {
    padding: 8px 20px 8px !important;
}
.case-card {
    overflow: hidden;
}
/* 标签柔和样式 */
.case-cover.cover-allcase ~ .case-tag {
    background: rgba(255,154,78,0.1);
    color: #f97316;
}
.case-cover.cover-geo ~ .case-tag {
    background: rgba(79,172,254,0.1);
    color: #0ea5e9;
}
.case-cover.cover-reputation ~ .case-tag {
    background: rgba(130,108,255,0.1);
    color: #7c3aed;
}
.case-cover.cover-wom ~ .case-tag {
    background: rgba(34,197,170,0.1);
    color: #10b981;
}
/* 重新设计客户案例 专业To B风格 */
.case-list {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 24px !important;
}
.case-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(44, 92, 151, 0.06);
    transition: all 0.3s ease;
    cursor: pointer;
    padding: 24px;
    position: relative;
    overflow: hidden;
}
.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(44, 92, 151, 0.12);
}
/* 去掉彩色顶边 */
.case-cover {
    display: none !important;
}
.case-tag {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    display: inline-block !important;
    margin: 0 0 12px 0 !important;
    font-size: 12px !important;
    padding: 3px 10px !important;
    border-radius: 4px !important;
    background: #f0f4f8 !important;
    color: #64748b !important;
    font-weight: 400 !important;
}
.case-card-title {
    font-size: 17px !important;
    font-weight: 600 !important;
    color: #1e293b !important;
    padding: 0 !important;
    margin: 0 0 12px 0 !important;
    line-height: 1.4 !important;
}
.case-card-result {
    font-size: 20px !important;
    font-weight: 700 !important;
    color: #2c5c97 !important;
    margin: 0 0 8px 0 !important;
    line-height: 1.3 !important;
}
.case-card-desc {
    font-size: 13px !important;
    color: #64748b !important;
    line-height: 1.6 !important;
    padding: 0 !important;
    margin: 0 0 16px 0 !important;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-card-btn {
    font-size: 13px !important;
    color: #2c5c97 !important;
    font-weight: 500 !important;
    padding: 0 !important;
    text-align: right !important;
    transition: all 0.3s ease;
}
.case-card:hover .case-card-btn {
    color: #1d4ed8 !important;
    padding-right: 4px;
}
#num_2 {
    padding: 80px 0 60px !important;
}
/* 响应式适配 */
@media (max-width: 1023px) {
    .case-list {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 16px !important;
    }
    .case-card {
        padding: 20px;
    }
}
@media (max-width: 767px) {
    .case-list {
        grid-template-columns: 1fr !important;
        gap: 12px !important;
    }
    .case-card-result {
        font-size: 18px !important;
    }
}
/* 案例卡片和核心服务/优势卡片样式完全统一 */
.case-list {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 24px !important;
}
.case-card {
    background: #fff !important;
    border-radius: 16px !important;
    box-shadow: 0 4px 20px rgba(44, 92, 151, 0.08) !important;
    padding: 32px 24px !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    cursor: pointer;
    text-align: center !important;
}
.case-card:hover {
    transform: translateY(-6px) !important;
    box-shadow: 0 12px 32px rgba(44, 92, 151, 0.15) !important;
}
/* 案例图标 和服务图标样式一致 */
.case-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}
.case-icon svg {
    width: 28px;
    height: 28px;
    stroke: #fff;
    stroke-width: 2;
    fill: none;
}
/* 不同服务类型渐变 和核心服务图标渐变一致 */
.case-icon.icon-allcase {
    background: linear-gradient(135deg, #ff9a4e 0%, #f97316 100%);
}
.case-icon.icon-geo {
    background: linear-gradient(135deg, #4facfe 0%, #0ea5e9 100%);
}
.case-icon.icon-reputation {
    background: linear-gradient(135deg, #826cff 0%, #7c3aed 100%);
}
.case-icon.icon-wom {
    background: linear-gradient(135deg, #22c5aa 0%, #10b981 100%);
}
.case-tag {
    display: inline-block !important;
    font-size: 12px !important;
    padding: 3px 10px !important;
    border-radius: 4px !important;
    background: #f0f4f8 !important;
    color: #64748b !important;
    margin: 0 0 12px 0 !important;
    position: static !important;
}
.case-card-title {
    font-size: 18px !important;
    font-weight: 600 !important;
    color: #1e293b !important;
    margin: 0 0 12px 0 !important;
    padding: 0 !important;
    text-align: center !important;
    line-height: 1.4 !important;
}
.case-card-desc {
    font-size: 14px !important;
    color: #64748b !important;
    line-height: 1.7 !important;
    padding: 0 !important;
    margin: 0 0 16px 0 !important;
    text-align: center !important;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-card-btn {
    font-size: 14px !important;
    color: #2c5c97 !important;
    font-weight: 500 !important;
    padding: 0 !important;
    text-align: center !important;
    transition: all 0.3s ease;
}
.case-card:hover .case-card-btn {
    color: #1d4ed8 !important;
}
/* 隐藏之前的元素 */
.case-cover, .case-card-result {
    display: none !important;
}
/* 客户案例样式 和核心服务卡片完全统一 */
.case-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.case-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(44, 92, 151, 0.08);
    padding: 32px 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    cursor: pointer;
}
.case-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(44, 92, 151, 0.15);
}
.case-tag {
    display: inline-block;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 4px;
    background: #f0f4f8;
    color: #64748b;
    margin: 0 0 12px 0;
}
.case-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 12px 0;
    line-height: 1.4;
}
.case-card p {
    font-size: 14px;
    color: #64748b;
    line-height: 1.7;
    margin: 0 0 16px 0;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-card-btn {
    font-size: 14px;
    color: #2c5c97;
    font-weight: 500;
    transition: all 0.3s ease;
}
.case-card:hover .case-card-btn {
    color: #1d4ed8;
}
/* 响应式 */
@media (max-width: 1023px) {
    .case-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .case-card {
        padding: 24px 20px;
    }
}
@media (max-width: 767px) {
    .case-list {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}
/* 覆盖案例样式 无图标初始版本 风格统一 */
.case-card {
    padding: 28px 24px;
}
.case-card-title {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 10px 0;
    text-align: center;
    line-height: 1.4;
}
.case-card-result {
    font-size: 15px;
    font-weight: 500;
    color: #2c5c97;
    margin: 0 0 12px 0;
    text-align: center;
}
.case-card-desc {
    font-size: 14px;
    color: #64748b;
    line-height: 1.7;
    margin: 0 0 16px 0;
    text-align: center;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
/* 调整案例布局：标签左上角，其他内容居中 */
.case-card {
    position: relative;
    padding-top: 48px;
}
.case-tag {
    position: absolute;
    top: 20px;
    left: 24px;
    margin: 0;
}
.case-card-btn {
    text-align: center;
    display: block;
    width: 100%;
}
/* 弹窗内容样式优化 */
.case-modal-text b {
    color: #2c5c97;
    font-weight: 600;
}
.case-modal-text {
    line-height: 1.8;
}
/* 优化案例弹窗样式 更商务正式 */
.case-modal-text b {
    color: #1e293b;
    font-weight: 600;
    display: block;
    margin: 16px 0 8px 0;
    padding-left: 10px;
    border-left: 3px solid #2c5c97;
    font-size: 15px;
}
.case-modal-text b:first-child {
    margin-top: 0;
}
.case-modal-text {
    line-height: 1.8;
    color: #475569;
    font-size: 14px;
}
/* 优化案例弹窗样式 适配屏幕 固定底部按钮 */
.case-modal-content {
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    padding-bottom: 0;
    width: 680px;
    max-width: 90vw;
}
.case-modal-section {
    margin-bottom: 16px;
}
.case-modal-section:last-of-type {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 0;
    padding-bottom: 20px;
}
.case-modal-btn {
    position: sticky;
    bottom: 0;
    margin: 0 -40px;
    width: calc(100% + 80px);
    border-radius: 0 0 12px 12px;
    padding: 16px 0;
    flex-shrink: 0;
}
.case-modal-text b {
    margin: 12px 0 6px 0;
    font-size: 14px;
}
.case-modal-text {
    font-size: 14px;
    line-height: 1.7;
}
.case-modal-label {
    font-size: 13px;
    margin-bottom: 6px;
}
.case-modal-title {
    margin: 8px 0 16px 0;
    font-size: 20px;
}
.case-modal-tag {
    font-size: 12px;
    padding: 4px 10px;
}
/* 紧凑弹窗样式 一屏显示无滚动 */
.case-modal-content {
    max-height: 85vh;
    padding: 28px 32px 0;
    overflow: visible;
}
.case-modal-section {
    margin-bottom: 12px;
}
.case-modal-section:last-of-type {
    overflow: visible;
    padding-bottom: 0;
    margin-bottom: 16px;
}
.case-modal-btn {
    position: static;
    margin: 0 -32px;
    width: calc(100% + 64px);
    border-radius: 0 0 12px 12px;
    padding: 14px 0;
}
.case-modal-text b {
    margin: 8px 0 4px 0;
    font-size: 14px;
    padding-left: 8px;
}
.case-modal-text {
    font-size: 13px;
    line-height: 1.6;
}
.case-modal-label {
    font-size: 12px;
    margin-bottom: 4px;
}
.case-modal-title {
    margin: 6px 0 12px 0;
    font-size: 18px;
}
.case-modal-tag {
    font-size: 12px;
    padding: 3px 8px;
}
.case-modal-close {
    top: 16px;
    right: 20px;
    font-size: 24px;
}
/* 恢复正常弹窗样式 覆盖紧凑版 */
.case-modal-content {
    max-height: 85vh;
    padding: 40px;
    padding-bottom: 0;
    width: 680px;
    max-width: 90vw;
    display: flex;
    flex-direction: column;
}
.case-modal-section {
    margin-bottom: 20px;
}
.case-modal-section:last-of-type {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 0;
    padding-bottom: 24px;
}
.case-modal-btn {
    position: sticky;
    bottom: 0;
    margin: 0 -40px;
    width: calc(100% + 80px);
    border-radius: 0 0 12px 12px;
    padding: 16px 0;
    flex-shrink: 0;
}
.case-modal-text b {
    color: #1e293b;
    font-weight: 600;
    display: block;
    margin: 16px 0 8px 0;
    padding-left: 10px;
    border-left: 3px solid #2c5c97;
    font-size: 15px;
}
.case-modal-text b:first-child {
    margin-top: 0;
}
.case-modal-text {
    line-height: 1.8;
    color: #475569;
    font-size: 14px;
}
.case-modal-label {
    font-size: 13px;
    margin-bottom: 8px;
}
.case-modal-title {
    margin: 10px 0 20px 0;
    font-size: 20px;
}
.case-modal-tag {
    font-size: 12px;
    padding: 4px 12px;
}
.case-modal-close {
    top: 20px;
    right: 24px;
    font-size: 28px;
}
/* 恢复带emoji版本样式 去掉左边框 */
.case-modal-text b {
    border-left: none;
    padding-left: 0;
    margin: 12px 0 6px 0;
    font-size: 14px;
    font-weight: 600;
    color: #1e293b;
    display: block;
}
.case-modal-text b:first-child {
    margin-top: 0;
}
.case-modal-text {
    line-height: 1.8;
    color: #475569;
    font-size: 14px;
}
/* 新增功能样式 */
/* 轮播箭头 */
.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    border: none;
    color: #fff;
    font-size: 28px;
    line-height: 44px;
    text-align: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}
.banner-arrow:hover {
    background: rgba(255,255,255,0.35);
}
.banner-prev {
    left: 40px;
}
.banner-next {
    right: 40px;
}
/* 首屏信任小字 */
.banner-trust {
    margin-top: 24px;
    font-size: 14px;
    color: rgba(255,255,255,0.85);
}
/* 关于我们 */
.about {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    background: #f8fafc;
}
.about-content {
    display: flex;
    gap: 60px;
    align-items: center;
    margin-top: 40px;
}
.about-text {
    flex: 1;
}
.about-text h3 {
    font-size: 28px;
    color: #1e293b;
    margin-bottom: 24px;
    font-weight: 600;
}
.about-text p {
    font-size: 16px;
    line-height: 1.9;
    color: #475569;
    margin-bottom: 16px;
}
.about-stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.stat-card {
    background: #fff;
    border-radius: 16px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(44,92,151,0.08);
    transition: all 0.3s ease;
}
.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(44,92,151,0.15);
}
.stat-num {
    font-size: 42px;
    font-weight: 700;
    background: linear-gradient(135deg, #2c5c97 0%, #4facfe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}
.stat-num span {
    font-size: 20px;
}
.stat-label {
    font-size: 14px;
    color: #64748b;
}
/* 工作时间 */
.work-time {
    text-align: center;
    margin-top: 32px;
    font-size: 15px;
    color: #64748b;
}
/* 汉堡菜单 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #2c5c97;
    cursor: pointer;
    padding: 4px 8px;
}
/* 按钮点击缩放 */
.banner-btn:active, .case-modal-btn:active, .contact-card:active, .service li:active, .advantage-icon:active, .case-card:active, .stat-card:active {
    transform: scale(0.98);
}
/* 移动端适配 */
@media (max-width: 768px) {
    .banner-arrow {
        display: none;
    }
    .menu-toggle {
        display: block;
    }
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 0;
        margin: 0;
        box-shadow: 0 8px 24px rgba(0,0,0,0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    .nav-menu.active {
        max-height: 400px;
    }
    .nav-menu li {
        width: 100%;
        text-align: center;
        border-bottom: 1px solid #f1f5f9;
    }
    .nav-menu li a {
        display: block;
        padding: 16px 0;
        height: auto;
        line-height: normal;
    }
    .about-content {
        flex-direction: column;
        gap: 30px;
        margin-top: 20px;
    }
    .about-text h3 {
        font-size: 22px;
        text-align: center;
    }
    .about-text p {
        font-size: 15px;
        text-align: center;
    }
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        width: 100%;
    }
    .stat-card {
        padding: 20px 12px;
    }
    .stat-num {
        font-size: 32px;
    }
    .hotline {
        display: none;
    }
}
/* 调整Banner文字垂直居中 */
.banner-text {
    top: 47% !important;
}
/* 弹窗内滚动阻止页面滚动 */
.case-modal-content {
    overscroll-behavior: contain;
}
/* Banner文字水平居中 */
.banner-text {
    left: 50% !important;
    top: 50% !important;
    transform: translate(-50%, -50%) !important;
    text-align: center;
}
.banner-tags {
    justify-content: center;
}
/* 调整Banner为偏左但不贴边，商务风排版 */
.banner-text {
    left: 20% !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    text-align: left;
}
.banner-tags {
    justify-content: flex-start;
}
/* 微调Banner位置，再左移一点 */
.banner-text {
    left: 15% !important;
}
/* 发展历程时间轴样式 */
.timeline {
    margin-top: 28px;
}
.timeline h4 {
    font-size: 18px;
    color: #1e293b;
    margin-bottom: 16px;
    font-weight: 600;
}
.timeline-item {
    position: relative;
    padding-left: 24px;
    padding-bottom: 12px;
    border-left: 2px solid #e2e8f0;
}
.timeline-item:last-child {
    padding-bottom: 0;
    border-left-color: transparent;
}
.timeline-dot {
    position: absolute;
    left: -7px;
    top: 2px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2c5c97 0%, #4facfe 100%);
}
.timeline-year {
    font-size: 15px;
    font-weight: 600;
    color: #2c5c97;
    margin-bottom: 4px;
}
.timeline-content {
    font-size: 14px;
    line-height: 1.6;
    color: #475569;
}
/* 调整关于我们间距，保证一屏显示 */
.about-text p {
    margin-bottom: 0;
}
@media (max-width: 768px) {
    .timeline {
        margin-top: 20px;
    }
    .timeline h4 {
        text-align: left;
    }
}
/* 数据卡片改为3列2行工整布局 */
.about-stats {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 16px !important;
}
/* 修复联系我们页脚在最底部 */
#num_5 {
    display: flex !important;
    flex-direction: column !important;
}
#num_5 .cont {
    flex: 1 !important;
    display: flex !important;
    align-items: center !important;
}
#num_5 .foot {
    margin-top: auto !important;
}
/* 返回顶部按钮样式，和电话按钮统一 */
.xuanfu .back-top {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2c5c97 0%, #4facfe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 12px;
    box-shadow: 0 4px 12px rgba(44,92,151,0.3);
    transition: all 0.3s ease;
}
.xuanfu .back-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(44,92,151,0.4);
}
.xuanfu .back-top img {
    display: none;
}
/* 核心服务大卡片新样式 */
.service-list-large {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 60px;
    list-style: none;
    padding: 0;
}
.service-card-large {
    background: #fff;
    border-radius: 20px;
    padding: 48px 32px;
    box-shadow: 0 4px 24px rgba(44,92,151,0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    text-align: center;
}
.service-card-large:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 48px rgba(44,92,151,0.15);
    border-color: rgba(44,92,151,0.1);
}
.service-icon-large {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}
.service-card-large h3 {
    font-size: 24px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 16px;
}
.service-desc-large {
    font-size: 15px;
    line-height: 1.8;
    color: #64748b;
    margin-bottom: 28px;
}
.service-points {
    display: flex;
    flex-direction: column;
    gap: 10px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.service-points li {
    font-size: 14px;
    color: #475569;
    padding: 10px 16px;
    background: #f8fafc;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}
.service-card-large:hover .service-points li {
    background: rgba(44,92,151,0.05);
}
/* 响应式 */
@media (max-width: 1024px) {
    .service-list-large {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}
@media (max-width: 768px) {
    .service-list-large {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 30px;
    }
    .service-card-large {
        padding: 32px 24px;
    }
    .service-icon-large {
        width: 64px;
        height: 64px;
        margin-bottom: 20px;
    }
    .service-icon-large svg {
        width: 32px;
        height: 32px;
    }
    .service-card-large h3 {
        font-size: 20px;
    }
}
/* 核心服务卡片设计感升级 */
.service-card-large {
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, #ffffff 0%, #fafcff 100%);
}
/* 卡片顶部渐变装饰条 */
.service-card-large::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    border-radius: 20px 20px 0 0;
    transition: all 0.4s ease;
}
.service-card-large:nth-child(1)::before {
    background: linear-gradient(90deg, #fa709a 0%, #fee140 100%);
}
.service-card-large:nth-child(2)::before {
    background: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);
}
.service-card-large:nth-child(3)::before {
    background: linear-gradient(90deg, #667eea 0%, #f5576c 100%);
}
/* 卡片角落半透明装饰圆 */
.service-card-large::after {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    opacity: 0.06;
    transition: all 0.4s ease;
}
.service-card-large:nth-child(1)::after {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}
.service-card-large:nth-child(2)::after {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}
.service-card-large:nth-child(3)::after {
    background: linear-gradient(135deg, #667eea 0%, #f5576c 100%);
}
/* 标题同色系渐变 */
.service-card-large:nth-child(1) h3 {
    background: linear-gradient(135deg, #fa709a 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.service-card-large:nth-child(2) h3 {
    background: linear-gradient(135deg, #4facfe 0%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.service-card-large:nth-child(3) h3 {
    background: linear-gradient(135deg, #667eea 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
/* hover动效升级 */
.service-card-large:hover {
    transform: translateY(-12px);
}
.service-card-large:hover::before {
    height: 6px;
}
.service-card-large:hover::after {
    transform: scale(1.2);
    opacity: 0.1;
}
.service-card-large:hover .service-icon-large {
    transform: scale(1.08) rotate(-3deg);
    box-shadow: 0 12px 32px rgba(0,0,0,0.15);
}
.service-icon-large {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.service-points li {
    transition: all 0.3s ease;
}
.service-card-large:hover .service-points li {
    transform: translateX(4px);
}
/* 优化服务文字可读性，让小字更直观 */
.service-desc-large {
    font-size: 16px !important;
    color: #475569 !important;
    line-height: 1.8;
    font-weight: 400;
}
.service-points li {
    background: rgba(44,92,151,0.08) !important;
    color: #334155 !important;
    font-weight: 500 !important;
    text-align: left !important;
    padding: 12px 16px 12px 40px !important;
    position: relative;
    border-radius: 10px;
}
.service-points li::before {
    content: '✓';
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2c5c97 0%, #4facfe 100%);
    color: #fff;
    font-size: 12px;
    line-height: 18px;
    text-align: center;
    font-weight: bold;
}
.service-card-large:hover .service-points li {
    transform: translateX(0) !important;
    background: rgba(44,92,151,0.12) !important;
}
/* ========== 体验优化样式 ========== */
/* 1. 全局自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #2c5c97 0%, #4facfe 100%);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2c5c97;
}
/* 2. 弹窗滚动条单独适配 */
.case-modal-content::-webkit-scrollbar {
    width: 6px;
}
.case-modal-content::-webkit-scrollbar-track {
    background: #f8fafc;
    border-radius: 3px;
    margin: 10px 0;
}
.case-modal-content::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #2c5c97 0%, #4facfe 100%);
    border-radius: 3px;
}
/* 3. 导航栏滚动效果 */
#nav {
    transition: all 0.3s ease;
}
#nav.scrolled {
    background: rgba(255,255,255,0.98);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
/* 4. 板块淡入上移入场动画 */
.section-title, .service-list-large, .case-list, .mr_frbox, .about-content, .contact-cards {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.section-title.fade-in, .service-list-large.fade-in, .case-list.fade-in, .mr_frbox.fade-in, .about-content.fade-in, .contact-cards.fade-in {
    opacity: 1;
    transform: translateY(0);
}
/* 5. 首屏按钮呼吸动效 */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255,255,255,0.4);
    }
    70% {
        box-shadow: 0 0 0 12px rgba(255,255,255,0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255,255,255,0);
    }
}
.banner-btn {
    animation: pulse 2s infinite;
}
/* ========== 细节优化样式 ========== */
/* 1. 按钮/卡片点击缩小反馈 */
a, button, .service-card-large, .case-card, .mr_frbox li, .stat-card, .contact-card, .xuanfu a, .back-top {
    transition: all 0.2s ease !important;
}
a:active, button:active, .service-card-large:active, .case-card:active, .mr_frbox li:active, .stat-card:active, .contact-card:active, .xuanfu a:active, .back-top:active {
    transform: scale(0.98) !important;
}
/* 2. 回到顶部智能显示隐藏 */
.back-top {
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: all 0.3s ease;
}
.back-top.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
/* 页脚slogan样式 */
.foot-slogan {
    text-align: center;
    font-size: 14px;
    color: #94a3b8;
    margin-bottom: 12px;
    letter-spacing: 1px;
}
/* 案例标签带图标样式 */
.case-tag {
    display: inline-flex !important;
    align-items: center;
    gap: 6px;
}
/* PC端全屏滚动时禁止浏览器默认滚动，解决滑到底部还能继续滑的问题 */
@media (min-width: 1024px) {
    html, body {
        height: 100%;
        overflow: hidden;
    }
}