/* Banner样式 */
.banner {
    position: relative;
    width: 100%;
    height: 600px; /* 可根据需要调整高度 */
    background: linear-gradient(135deg, #e8edf3 0%, #f0f4f9 100%); /* 渐变背景 */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
}

/* 隐藏原背景图片 */
.banner-img {
    display: none;
}

.banner-text {
    z-index: 2;
}

.banner-text h1 {
    font-size: 42px;
    font-weight: 700;
    color: #1d2129;
    margin-bottom: 16px;
}

.banner-text p {
    font-size: 18px;
    color: #4e5969;
    margin-bottom: 32px;
}

/* 按钮组改为链接组样式 */
.banner-btn-group {
    display: flex;
    margin-left: 40px;
    gap: 20px;
}

/* 核心：链接样式（替代原按钮） */
.banner-link {
    padding: 10px 24px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none; /* 去除链接下划线 */
    display: inline-block; /* 保证padding生效 */
    transition: all 0.3s ease;
}

.banner-link.primary {
    background-color: #165dff;
    color: #fff !important; /* 强制白色，避免继承链接颜色 */
    text-align: center;
}

.banner-link.primary:hover {
    background-color: #0d47a1;
    text-decoration: none; /* hover时也无下划线 */
}

.banner-link.secondary {
    background-color: #fff;
    color: #165dff !important;
    border: 1px solid #165dff;
}

.banner-link.secondary:hover {
    background-color: #f0f5ff;
    text-decoration: none;
}
/* 板块通用标题 - 提升层级，适配业务范围背景图 */
.section-title {
    text-align: center;
    margin-bottom: 0;
    padding-top: 20px;
    position: relative;
    z-index: 10; /* 关键：让标题层级高于背景图 */
}
.section-title h2 {
    font-size: 28px;
    color: black;
    margin-bottom: 8px;
    display: inline-block;
    border-bottom: 2px solid #165DFF;
    padding-bottom: 6px;
    /*background: rgba(255,255,255,0.8);  白天标题加浅背景，更醒目 */
    padding: 0 20px 6px;
    border-radius: 4px 4px 0 0;
}
/* 夜晚板块标题 */
body.night-mode .section-title h2 {
    font-size: 28px;
    color: #fff;
    margin-bottom: 8px;
    display: inline-block;
    border-bottom: 2px solid #fff;
    padding-bottom: 6px;
    /*background: rgba(29,33,41,0.8);  夜间标题加深色背景，更醒目 */
}
/* 板块1：产研学用融合模式 */
.feature-section {
    padding: 60px 0;
    background-color: #fff;
}

.feature-section .section-title {
    text-align: center;
    margin-bottom: 40px;
}

.feature-section .section-title h2 {
    font-size: 28px;
    font-weight: 700;
    color: #1d2129;
}

.feature-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px; /* 原24px → 缩小间距，减少空白 */
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.feature-card {
    background-color: #f7f8fa;
    padding: 28px 20px; /* 原24px → 适度放大但减少冗余内边距 */
    border-radius: 8px;
    /* 移除scale缩放（避免额外空白），保留hover阴影 */
    transition: box-shadow 0.3s ease;
}

/* 隐藏原卡片图片 */
.feature-card .feature-img {
    display: none;
}

.feature-card h3 {
    font-size: 22px; /* 原20px → 放大标题 */
    font-weight: 600;
    color: #165dff;
    margin-bottom: 10px; /* 原12px → 缩小间距，减少空白 */
    line-height: 1.2; /* 紧凑行高 */
}

.feature-card p {
    font-size: 15px; /* 原14px → 放大正文 */
    color: #4e5969;
    line-height: 1.6;
    margin: 0; /* 移除默认margin，减少空白 */
}

/* hover效果（仅阴影，无缩放，避免空白） */
.feature-card:hover {
    box-shadow: 0 4px 12px rgba(22, 93, 255, 0.1);
}
/* 板块2：业务范围*/
.business-section {
    margin-bottom: 80px;
    /* background-color: #abb3c7; */
    color: #fff;
    border-radius: 8px;
    padding: 0;
    min-height: 300px;
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
}

/* 业务范围背景图 */
.business-section .bg-img {
    width: 100%;
    max-width: 1200px;
    height: 100%;
    object-fit: cover;
    object-position: center;
    position: absolute;
    border-radius: 8px;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    opacity: 0.6;
    transition: opacity 0.5s ease-in-out;
}

/* 夜间模式背景图透明度 */
body.night-mode .business-section .bg-img {
    opacity: 0.4;
}


.business-section .container {
    width: 100%;
    max-width: 1200px;
    min-height: 500px;
    position: relative;
    z-index: 5;
    padding: 20px; 
}

.business-content {
    text-align: center;
    padding: 40px 20px;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 6; /* 高于container，确保不被遮挡 */
}

.business-content-title {
    font-size: 24px;
    margin-bottom: 20px;
    opacity: 0.95;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.business-content-desc {
    font-size: 18px;
    max-width: 800px;
    line-height: 1.8;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.business-card-group {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px 20px 0 20px;
    z-index: 6;
}

.business-card {
    background-color: #C0C4CC;
    color: #000;
    height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    position: relative;
    clip-path: polygon(
        0 15px,
        15px 0,
        calc(100% - 15px) 0,
        100% 15px,
        100% 100%,
        0 100%
    );
    transition: all 0.3s ease;
    padding: 10px 10px 0 10px;
    /* padding-bottom: 0; */
}

body.night-mode .business-card {
    background-color: #373B41;
    color: #fff;
}

/* .business-card:hover {
    background-color: #DCDFE6;

} */

.business-card:hover .active{
    /* height: 200px; */
    background-color: #DCDFE6;

}

body.night-mode .business-card:hover {
    background-color: #4E5969;
}

.business-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
    font-weight: 600;
}

.business-card a {
    font-size: 14px;
    color: #165DFF;
}

.business-card a:hover {
    text-decoration: underline;
}
/* 板块3：团体活动（照片墙） */
.activity-section {
    margin-bottom: 80px;
}
.photo-wall {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.photo-item {
    border-radius: 8px;
    overflow: hidden;
    height: 200px;
    position: relative;
}
.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}
.photo-item:hover img {
    transform: scale(1.05);
}
.photo-desc {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(0,0,0,0.6));
    color: #fff; /* 照片描述固定白色 */
    padding: 12px;
    font-size: 14px;
    text-align: center;
}
/* 板块4：三大列表+在线咨询 */
.list-section {
    margin-bottom: 80px;
}
.list-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
}
/* 板块4：三大列表+在线咨询 */
.list-section {
    margin-bottom: 80px;
}
.list-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
}
.list-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(22,93,255,0.08);
    padding: 24px;
    transition: background-color 0.3s, box-shadow 0.3s;
}
/* 行业观察列表*/
.list-card--weak {
    background: #FAFBFC;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
    border: 1px solid #F2F3F5;
}

.list-card--weak h3 {
    color: #333; 
}
.list-card--weak .list-item a {
    color: #6E7681;
}

.list-card--weak:hover {
    box-shadow: 0 2px 8px rgba(22,93,255,0.06);
    background: #fff;
}
/* 夜间模式  */
body.night-mode .list-card--weak {
    background: #24272B; 
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
    border-color: #373B41;
}
body.night-mode .list-card--weak h3 {
    color: #C0C4CC; 
}
body.night-mode .list-card--weak .list-item a {
    color: #86909C;
}
body.night-mode .list-card--weak:hover {
    background: #2C3036;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

body.night-mode .list-card {
    background-color: #2C3036;
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.list-card h3 {
    font-size: 18px;
    color: #000; 
    margin-bottom: 16px;
    display: flex;
    align-items: center;
}
body.night-mode .list-card h3 {
    color: #fff; 
}
.list-item {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid #F2F3F5;
}
body.night-mode .list-item {
    border-bottom-color: #373B41;
}
.list-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.list-item a {
    font-size: 14px;
    color: #4E5969; /* 白天列表链接：深灰 */
    transition: color 0.3s;
}
body.night-mode .list-item a {
    color: #E5E6EB; /* 夜间列表链接：浅白 */
}
.list-item a:hover {
    color: #165DFF; /* 悬停品牌蓝不变 */
}
/* 固定在线咨询入口 */
.consult-fixed {
    position: fixed;
    right: 30px;
    bottom: 30px;
    background-color: #165DFF;
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(22,93,255,0.2);
    cursor: pointer;
    z-index: 998;
    transition: all 0.3s;
}
.consult-fixed:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(22,93,255,0.3);
}
.consult-fixed span {
    font-size: 24px;
}


@media (max-width: 767px) {
    .banner {
        height: clamp(400px, 70vh, 600px);
        margin-bottom: 40px;
    }
    .banner-text {
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        color: #fff;
        text-align: center;
        text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        z-index: 10;
        padding: 0 20px;
        max-width: 95%;
    }
    .banner-text h1 {
        font-size: clamp(24px, 5vw, 30px);
        margin-bottom: 15px;
        margin-left: 0 !important;
        letter-spacing: 1px;
        text-align: center;
    }
    .banner-text p {
        font-size: clamp(14px, 3vw, 18px);
        opacity: 0.9;
        text-align: center;
        line-height: 1.5;
    }

.activity-section {
    margin-bottom: 80px;
}
.photo-wall {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.photo-item {
    border-radius: 8px;
    overflow: hidden;
    height: 200px;
    /* width: 150px; */
    position: relative;
}
.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}
.photo-item:hover img {
    transform: scale(1.05);
}
.photo-desc {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(0,0,0,0.6));
    color: #fff; /* 照片描述固定白色 */
    padding: 12px;
    font-size: 14px;
    text-align: center;
}
/* 列表 */
.list-section {
    margin-bottom: 80px;
}
.list-container {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 10px;
    position: relative;
}
.list-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(22,93,255,0.08);
    padding: 24px;
    transition: background-color 0.3s, box-shadow 0.3s;
}
/* 行业观察列表*/
.list-card--weak {
    background: #FAFBFC;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
    border: 1px solid #F2F3F5;
}

.list-card--weak h3 {
    color: #333; 
}
.list-card--weak .list-item a {
    color: #6E7681;
}

.list-card--weak:hover {
    box-shadow: 0 2px 8px rgba(22,93,255,0.06);
    background: #fff;
}
/* 夜间模式  */
body.night-mode .list-card--weak {
    background: #24272B; 
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
    border-color: #373B41;
}
body.night-mode .list-card--weak h3 {
    color: #C0C4CC; 
}
body.night-mode .list-card--weak .list-item a {
    color: #86909C;
}
body.night-mode .list-card--weak:hover {
    background: #2C3036;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

body.night-mode .list-card {
    background-color: #2C3036;
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.list-card h3 {
    font-size: 18px;
    color: #000; 
    margin-bottom: 16px;
    display: flex;
    align-items: center;
}
body.night-mode .list-card h3 {
    color: #fff; 
}
.list-item {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid #F2F3F5;
}
body.night-mode .list-item {
    border-bottom-color: #373B41;
}
.list-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.list-item a {
    font-size: 14px;
    color: #4E5969; /* 白天列表链接：深灰 */
    transition: color 0.3s;
}
body.night-mode .list-item a {
    color: #E5E6EB; /* 夜间列表链接：浅白 */
}
.list-item a:hover {
    color: #165DFF; /* 悬停品牌蓝不变 */
}
}