/* 1600px样式 */
@media (max-width: 1919px) and (min-width: 1600px) {
    .header {
        padding-right: 50px;
    }
    
    /* 新增：当前区域适配 */
    .program-chairs .container {
        /* max-width: 1919px; */
        padding: 0 1.7rem;
    }
    
    .chairs-row {
        gap: 1.7rem;
    }
    
    .chairs-row .chairs-category {
        min-width: 520px;
    }
    
    .chairs-row .chairs-title {
        font-size: 33px;
        padding: 0 1.2rem;
    }
    
    .chairs-row .chairs-title::before,
    .chairs-row .chairs-title::after {
        width: 83.33px;
    }
    
    .chairs-row .chairs-title::before {
        left: -92px;
    }
    
    .chairs-row .chairs-title::after {
        right: -92px;
    }
    .chairs-grid{
       grid-template-columns:  repeat(auto-fit, minmax(457px, 1fr));
    }
    .chairs-row .chairs-grid {
        grid-template-columns:  repeat(auto-fit, minmax(306px, 1fr));
        gap: 1.7rem;
    }
    
    .chair-card-new {
        width: 306px;
        height: 396.179px;
        padding: 1.7rem 1.2rem 1.2rem;
    }
    
    .chair-card-new .chair-image {
        width: 167px;
        height: 167px;
        margin-bottom: 1.1rem;
        border: 4px solid #D9D9D9;
    }
    
   
    
    .best-paper-award-chairs .chair-card,
    .org-program-chairs .chair-card,
    .org-general-chairs .chair-card{
      width: 306px;
      height: 396.17px;
    }
    .best-paper-award-chairs .chair-card .chair-image,
    .org-program-chairs .chair-card .chair-image, 
    .org-general-chairs .chair-card .chair-image{
      width: 167px;
      height: 167px;
	  margin-bottom: 1.1rem;
	  border:4px solid #D9D9D9;
    }
}

@media (max-width: 1600px) {
    /* 按照1920px的比例缩放 (1600/1920 = 0.833333) */
    .box1 {
        width: 659px;
        height: 250px;
    }
    
    .box2 {
        width: 659px;
        height: 268px;
    }
    
    .box3 {
        min-width: 583px;
    }
    
    .info-label,
    .info-value {
        font-size: 22px;
    }
    
    .registration-text h3 {
        font-size: 23px;
    }
    
    .registration-text p {
        font-size: 22px;
    }
    
    .registration-button {
        width: 208px;
    }
    
    .registration-button a {
        font-size: 23px;
    }
    
    .intro-section {
        height: 537px;
    }
    
    .intro-section h3 {
        font-size: 27px;
    }
    
    .intro-section p {
        font-size: 23px;
    }
    
    .hero {
        min-height: 1000px;
    }
    
    .cfp-section {
        padding: 3.3rem 5rem;
        margin-top: 50px;
    }
    
    .cfp-section h2 {
        font-size: 33px;
        margin-bottom: 125px;
    }
    
    .cfp-section h2::after {
        width: 73px;
        height: 8px;
        bottom: -42px;
    }
    
    .cfp-section p {
        font-size: 20px;
    }
    
    .cfp-section h3 {
        font-size: 23px;
    }
    
    .cfp-section ul {
        font-size: 20px;
    }
    
    /* 重要日期区域 */
    .dates-section {
        padding: 0 6rem;
    }
    
    .dates-timeline {
        flex-direction: row;
    }
    
    .timeline-item {
        padding: 1.5rem 0.7rem;
        min-height: 240px;
        position: relative;
        z-index: 1;
    }
    
    .timeline-item:nth-child(1) { z-index: 10; }
    .timeline-item:nth-child(2) { z-index: 9; }
    .timeline-item:nth-child(3) { z-index: 8; }
    .timeline-item:nth-child(4) { z-index: 7; }
    .timeline-item:nth-child(5) { z-index: 6; }
    
    .timeline-item:not(:last-child) {
        margin-right: 38px;
        clip-path: polygon(0 0, calc(100% - 60px) 0, 100% 50%, calc(100% - 60px) 100%, 0 100%);
    }
    
    .timeline-item:not(:first-child) {
        margin-left: -115px;
    }
    
    .timeline-item h3 {
        font-size: 18px;
        padding: 0.35rem 0.7rem;
    }
    
    .timeline-item p {
        font-size: 13px;
    }
    
    .timeline-icon {
        margin-bottom: 1.1rem;
        width: 45px;
        height: 45px;
    }
    
    .timeline-icon svg {
        width: 22px;
        height: 22px;
    }
    
    /* 主席区域 */
    .chairs-grid {
        grid-template-columns: repeat(3, 373px);
    }
    
    .chairs-grid.chairs-grid-small {
        grid-template-columns: repeat(2, 373px);
    }
    
    .chair-card {
        width: 373px;
        height: 494px;
        padding: 1.7rem 1.2rem 1.2rem;
    }
    
    .chair-image {
        width: 272px;
        height: 272px;
        border: 4px solid #D9D9D9;
        margin-bottom: 2.1rem;
    }
    
    .chair-name {
        font-size: 23px;
    }
    
    .chair-affiliation {
        font-size: 20px;
    }
    
    /* 演讲者区域 */
    .speaker {
        width: 350px;
        height: 450px;
    }
    
    .speakers-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
    
    .speaker img {
        width: 250px;
        height: 250px;
    }
    
    /* 新增：当前区域适配 */
    .program-chairs .container {
        max-width: 1600px;
        padding: 0 1.7rem;
    }
    
    .chairs-row {
        gap: 1.7rem;
    }
    
    .chairs-row .chairs-category {
        min-width: 520px;
    }
    
    .chairs-row .chairs-title {
        font-size: 33px;
        padding: 0 1.2rem;
    }
    
    .chairs-row .chairs-title::before,
    .chairs-row .chairs-title::after {
        width: 83.33px;
    }
    
    .chairs-row .chairs-title::before {
        left: -92px;
    }
    
    .chairs-row .chairs-title::after {
        right: -92px;
    }
    
    .chairs-row .chairs-grid {
        grid-template-columns: repeat(3, 306px);
        gap: 1.7rem;
    }
    
    .chair-card-new {
        width: 306px;
        height: 396.179px;
        padding: 1.7rem 1.2rem 1.2rem;
    }
    
    .chair-card-new .chair-image {
        width: 167px;
        height: 167px;
        margin-bottom: 1.1rem;
        border: 4px solid #D9D9D9;
    }
    
    .chair-name-new {
        font-size: 23px;
    }
    
    .chair-affiliation.chair-name-new {
        font-size: 18px;
    }

     
    .org-general-chairs .chair-card{
      width: 281px;
      height: 410.179px;
    }
    .best-paper-award-chairs .chair-card .chair-image,
.org-program-chairs .chair-card .chair-image, 
.org-general-chairs .chair-card .chair-image{
  width: 153px;
  height: 153px;
}

    /* 表格响应式样式 */
    .pc-table {
        width: 100%;
    }
    
    .pc-table th,
    .pc-table td {
        font-size: 15px;
    }
    
    .pc-table td:first-child {
        min-width: 110px;
    }
    
    /* overview-content-section 响应式样式 */
    .overview-content-section h2 {
        font-size: 33px;
    }
    
    .overview-content p,
    .overview-content div {
        font-size: 20px;
    }
    
    .overview-content {
        padding: 0 2rem;
    }
}