/* 会议概况页面样式 */
.overview-section {
    padding: 60px 0;
    background: #fff;
    position: relative;
}

.overview-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(240, 248, 255, 0.8) 0%, rgba(255, 255, 255, 0.9) 100%);
    z-index: 0;
}

.overview-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}

.overview-header .header-title {
    font-size: 36px;
    font-weight: bold;
    color: #333333;
    margin-bottom: 15px;
}

.overview-header .header-desc {
    font-size: 18px;
    color: #666;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

.overview-main {
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* 大会主题样式 - 左右布局 */
.main-theme {
    margin-bottom: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid #eee;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.theme-content-wrapper {
    flex: 1;
    padding-right: 30px;
}

.main-theme h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 20px;
    font-weight: bold;
}

.theme-title {
    font-size: 32px;
    color: #1f5c99;
    font-weight: bold;
    margin-bottom: 5px;
}

.theme-title-en {
    font-size: 24px;
    color: #39a2ec;
    margin-bottom: 25px;
}

.theme-desc {
    text-align: left;
}

.theme-desc p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
}

.theme-image {
    flex: 1;
    min-width: 300px;
}

.theme-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.theme-image img:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* 分议题样式 */
.sub-themes {
    margin-bottom: 20px;
    position: relative;
/*    padding: 0 0 40px;*/
    z-index: 1; /* 确保z-index正确 */
/*    background: linear-gradient(135deg, rgba(240, 248, 255, 0.9) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-radius: 12px;*/
}

.sub-themes::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
/*    background: url('https://fm.glshimg.com/image/2025/0616/d4a7f40c5473a7eaf45c1520c499abe1.jpg') no-repeat center center;
    background-size: cover;*/
    opacity: 0.08;
    z-index: 0;
    border-radius: 12px;
}

.sub-themes::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0; /* 将高度设为0，实际上移除了这个装饰条 */
    background: none; /* 移除背景 */
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
    z-index: 1;
}



/* 行间距调整 */
.sub-themes .row {
    margin-left: -20px;
    margin-right: -20px;
    position: relative;
    z-index: 1;
    /*padding-top: 30px;  为编号留出空间 */
}

.sub-themes .col-md-4 {
    padding-left: 20px;
    padding-right: 20px;
}

/* 议题项目编号样式 */
.theme-item {
    background: #fff;
    border-radius: 10px;
    padding: 30px 22px 50px; /* 略微减小内边距 */
    box-shadow: 0 3px 15px rgba(0,0,0,0.04); /* 更轻的阴影 */
    transition: all 0.4s ease;
    margin-bottom: 30px;
    height: 580px; /* 略微减小高度 */
    overflow: visible;
    position: relative;
    z-index: 1;
    border: 1px solid #f2f2f2; /* 更浅的边框颜色 */
    margin-left: 10px;
    margin-right: 10px;
    margin-top: 40px; /* 减少顶部边距 */
}

.theme-item::before {
    content: attr(data-number);
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px; /* 减小宽度 */
    height: 50px; /* 减小高度 */
    background: linear-gradient(135deg, #42a685, #6fcdb3); /* 绿色渐变背景 */
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px; /* 减小字体大小 */
    font-weight: 500; /* 减轻字体粗细 */
    box-shadow: 0 3px 10px rgba(66, 166, 133, 0.3); /* 更新阴影颜色 */
    z-index: 10; 
    border: 3px solid #fff; /* 减小边框粗细 */
    transition: all 0.4s ease;
    overflow: visible;
}

.theme-item::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px; /* 减小顶部条的高度 */
    background: linear-gradient(90deg, #42a685, #6fcdb3); /* 绿色渐变色 */
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

.theme-item:hover {
    transform: translateY(-5px); /* 减小悬停时的上移距离 */
    box-shadow: 0 10px 25px rgba(31, 92, 153, 0.1); /* 更轻的悬停阴影 */
    border-color: #e6f2ff; /* 更浅的悬停边框颜色 */
}

.theme-item:hover::before {
    transform: translateX(-50%) scale(1.05); /* 减小悬停时的放大比例 */
    box-shadow: 0 5px 15px rgba(66, 166, 133, 0.4); /* 更新阴影颜色 */
}

.theme-icon {
    text-align: center;
    margin-bottom: 22px; /* 略微减少间距 */
    overflow: visible;
    border-radius: 8px;
    margin-top: 8px; /* 略微减少间距 */
    box-shadow: 0 3px 10px rgba(0,0,0,0.08); /* 更轻的阴影 */
}

.theme-icon img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    transition: transform 0.7s ease;
}

.theme-item:hover .theme-icon img {
    transform: scale(1.08);
}

.theme-item h3 {
    font-size: 20px; /* 减小字体大小 */
    color: #1f5c99; /* 匹配数字颜色 */
    font-weight: 600; /* 减轻字体粗细 */
    margin-bottom: 5px;
    text-align: center;
    position: relative;
    padding-bottom: 10px;
}

.theme-item h3::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px; /* 减小宽度 */
    height: 2px;
    background: #42a685; /* 更新为绿色 */
}

.theme-item h4 {
    font-size: 15px; /* 减小字体大小 */
    color: #42a685; /* 更新为绿色 */
    margin-bottom: 18px;
    text-align: center;
    font-weight: normal;
}

.theme-content {
    max-height: 240px; /* 限制内容区域高度 */
    overflow: hidden;
    position: relative;
    transition: max-height 0.5s ease; /* 添加过渡效果 */
}

.theme-content.expanded {
    max-height: 1000px; /* 展开后的最大高度 */
}

.theme-content.expanded::after {
    display: none; /* 展开后隐藏渐变遮罩 */
}

.theme-content::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,1));
    pointer-events: none;
    transition: opacity 0.3s ease; /* 添加渐变消失的过渡效果 */
}

.theme-content p {
    font-size: 15px;
    line-height: 1.7;
    color: #555;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 6; /* 显示6行 */
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.read-more {
    display: inline-block;
    color: #42a685; /* 更新为绿色 */
    font-size: 14px;
    font-weight: 500; /* 减轻字体粗细 */
    margin-top: 8px; /* 略微减少间距 */
    text-decoration: none;
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    transition: all 0.3s ease;
}

.read-more:hover {
    color: #378f71; /* 更深的绿色 */
    text-decoration: none;
}

/* 快速链接样式 - 新设计 */
/*.quick-links {
    margin-top: 20px;
    position: relative;
    z-index: 1;
    padding: 20px 0;
}*/

/*
.quick-links h2 {
    text-align: center;
    font-size: 30px;
    color: #1f5c99;
    font-weight: bold;
    margin-bottom: 40px;
    position: relative;
}
*/

/*.quick-links h2::after {
    content: "";
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #1f5c99, #39a2ec);
}*/

.link-item {
    margin-bottom: 60px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: all 0.4s ease;
}

.link-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(31, 92, 153, 0.15);
}

.link-image {
    height: 100%;
    overflow: hidden;
    border-radius: 8px;
}

.link-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.link-item:hover .link-image img {
    transform: scale(1.08);
}

.link-content {
    padding: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.link-content h3 {
    font-size: 24px;
    color: #1f5c99;
    font-weight: bold;
    margin-bottom: 15px;
}

.link-content p {
    font-size: 16px;
    line-height: 1.7;
    color: #555;
    margin-bottom: 20px;
}

.btn-view {
    display: inline-block;
    background: linear-gradient(135deg, #42a685, #6fcdb3);
    color: #fff;
    padding: 10px 25px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 15px rgba(66, 166, 133, 0.3);
    align-self: flex-start;
}

.btn-view:hover {
    background: linear-gradient(135deg, #6fcdb3, #42a685);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(66, 166, 133, 0.4);
    color: #fff;
    text-decoration: none;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .theme-item {
        height: auto;
    }
    
    .overview-header .header-title {
        font-size: 30px;
    }
    
    .theme-title {
        font-size: 28px;
    }
    
    .theme-title-en {
        font-size: 20px;
    }

    .main-theme {
        flex-direction: column;
    }

    .theme-content-wrapper {
        padding-right: 0;
        margin-bottom: 30px;
        width: 100%;
    }

    .theme-image {
        width: 100%;
    }

    .link-item .row {
        display: flex;
        flex-direction: column;
    }
    
    .link-item .col-md-6 {
        width: 100%;
    }
    
    .link-image {
        height: 250px;
        margin-bottom: 20px;
    }
    
    .link-content {
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .overview-section {
        padding: 40px 0;
    }
    
    .overview-header .header-title {
        font-size: 26px;
    }
    
    .overview-header .header-desc {
        font-size: 16px;
    }
    
    .theme-title {
        font-size: 24px;
    }
    
    .theme-item {
        margin-bottom: 20px;
    }
    
    .theme-icon img {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .overview-header .header-title {
        font-size: 24px;
    }
    
    .theme-title {
        font-size: 22px;
    }
    
    .theme-title-en {
        font-size: 18px;
    }
    
    .theme-item h3 {
        font-size: 20px;
    }
    
    .theme-icon img {
        height: 120px;
    }
}

/* 大会主题 - 新设计 */
.theme-header {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.theme-header h2 {
    font-size: 32px;
    color: #333333;
    font-weight: 600;
    margin-bottom: 15px;
    display: inline-block;
    position: relative;
}

.theme-header-line {
    width: 60px;
    height: 6px;
    background: linear-gradient(90deg, #3d8a6c, #55b08a);
    margin: 0 auto;
}

/* 主题卡片样式 */
.theme-card {
    display: flex;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    margin-bottom: 50px;
    position: relative;
    transition: all 0.4s ease;
}

.theme-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(61, 138, 108, 0.15);
}

.theme-card-content {
    flex: 1;
    padding: 40px;
    position: relative;
}

.theme-badge {
    display: inline-block;
    background: linear-gradient(135deg, #3d8a6c, #55b08a);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 20px;
    box-shadow: 0 3px 10px rgba(61, 138, 108, 0.2);
}

.theme-card h3.theme-title {
    font-size: 28px;
    color: #1f5c99;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.3;
}

.theme-card h4.theme-title-en {
    font-size: 18px;
    color: #42a685;
    font-weight: normal;
    margin-bottom: 20px;
    font-style: italic;
}

.theme-divider {
    width: 40px;
    height: 2px;
    background: #e0f5eb;
    margin: 20px 0;
}

.theme-card p.theme-desc {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
}

.theme-card-image {
    width: 45%;
    position: relative;
    overflow: hidden;
}

.theme-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.theme-card:hover .theme-card-image img {
    transform: scale(1.05);
}

.theme-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0.2), rgba(85,176,138,0.1));
}

/* 关键词样式 */
.theme-keywords {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin: 30px 0 60px;
    padding: 0 40px;
}

.keyword-item {
    display: flex;
    align-items: center;
    margin: 10px 0;
    padding: 15px 20px;
    background: #f9fbfe;
    border-radius: 8px;
    width: calc(25% - 20px);
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
}

.keyword-item:hover {
    background: #e6f5ee;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(61, 138, 108, 0.1);
}

.keyword-icon {
    margin-right: 15px;
}

.keyword-circle {
    display: block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3d8a6c, #55b08a);
}

.keyword-text {
    font-size: 16px;
    color: #3d8a6c;
    font-weight: 500;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .theme-card {
        flex-direction: column;
    }
    
    .theme-card-content {
        order: 2;
        padding: 30px;
    }
    
    .theme-card-image {
        width: 100%;
        height: 250px;
        order: 1;
    }
    
    .keyword-item {
        width: calc(50% - 15px);
    }
}

@media (max-width: 768px) {
    .theme-keywords {
        padding: 0 20px;
    }
    
    .keyword-item {
        width: 100%;
        margin: 8px 0;
    }
    
    .theme-card h3.theme-title {
        font-size: 24px;
    }
    
    .theme-card h4.theme-title-en {
        font-size: 16px;
    }
}

/* 倒计时器样式 */
.countdown-container {
    margin-bottom: 40px;
    background: linear-gradient(180deg, #b6d5ed, #3f83c3);
    border-radius: 10px;
    padding: 30px 25px;
    text-align: center;
    color: #ffffff;
    box-shadow: 0 12px 25px rgba(63, 131, 195, 0.15);
    position: relative;
    overflow: hidden;
}

.countdown-container {
    position: relative;
    overflow: hidden;
}

.countdown-container::before,
.countdown-container::after,
.countdown-container .wave-1,
.countdown-container .wave-2 {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    background-repeat: repeat-x;
    pointer-events: none;
}

.countdown-container::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 800 88.7' preserveAspectRatio='none'%3E%3Cpath fill='rgba(255,255,255,0.08)' d='M800 56.9c-155.5 0-204.9-50-405.5-49.9-200 0-250 49.9-394.5 49.9v31.8h800v-31.8z'/%3E%3C/svg%3E");
    height: 100px;
    z-index: 1;
    opacity: 1;
    animation: wave1 20s linear infinite;
    background-size: 800px 100px;
}

.countdown-container::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 800 88.7' preserveAspectRatio='none'%3E%3Cpath fill='rgba(255,255,255,0.06)' d='M800 56.9c-155.5 0-204.9-50-405.5-49.9-200 0-250 49.9-394.5 49.9v31.8h800v-31.8z'/%3E%3C/svg%3E");
    height: 70px;
    z-index: 2;
    opacity: 1;
    animation: wave2 15s linear infinite;
    animation-delay: -5s;
    background-size: 800px 70px;
}

.countdown-container .wave-1,
.countdown-container .wave-2 {
    z-index: 3;
}

.countdown-container .wave-1 {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 800 88.7' preserveAspectRatio='none'%3E%3Cpath fill='rgba(255,255,255,0.04)' d='M800 56.9c-155.5 0-204.9-50-405.5-49.9-200 0-250 49.9-394.5 49.9v31.8h800v-31.8z'/%3E%3C/svg%3E");
    height: 50px;
    animation: wave1 25s linear infinite reverse;
    animation-delay: -2s;
    background-size: 800px 50px;
}

.countdown-container .wave-2 {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 800 88.7' preserveAspectRatio='none'%3E%3Cpath fill='rgba(255,255,255,0.03)' d='M800 56.9c-155.5 0-204.9-50-405.5-49.9-200 0-250 49.9-394.5 49.9v31.8h800v-31.8z'/%3E%3C/svg%3E");
    height: 40px;
    animation: wave2 30s linear infinite;
    animation-delay: -8s;
    background-size: 800px 40px;
}

@keyframes wave1 {
    0% { background-position-x: 0; }
    100% { background-position-x: 800px; }
}

@keyframes wave2 {
    0% { background-position-x: 0; }
    100% { background-position-x: -800px; }
}

.countdown-timer {
    position: relative;
    z-index: 3; /* 确保数字显示在波浪上方 */
}

.countdown-container:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
}

.countdown-header {
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.countdown-header h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #1f5c99;
    text-align: center;
}

.countdown-header p {
    font-size: 18px;
    margin-bottom: 0;
    font-weight: 500;
    opacity: 0.9;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 20px;
    position: relative;
    z-index: 1;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 90px;
}

.countdown-value {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border-radius: 8px;
    font-size: 42px;
    font-weight: 700;
    width: 90px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.08), inset 0 1px 2px rgba(255, 255, 255, 0.5);
    position: relative;
    overflow: hidden;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.5);
    text-shadow: none;
}

.countdown-value:after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.25);
    top: 50%;
}

.countdown-label {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 1px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    opacity: 0.9;
}

/* 倒计时器响应式调整 */
@media (max-width: 768px) {
    .countdown-timer {
        gap: 10px;
    }
    
    .countdown-item {
        min-width: 70px;
    }
    
    .countdown-value {
        width: 70px;
        height: 70px;
        font-size: 32px;
    }
    
    .countdown-label {
        font-size: 14px;
    }
}