/*
 * Responsive compatibility layer
 * --------------------------------
 * The legacy desktop layout is intentionally left untouched above 1600px.
 * Rules below only activate on narrower terminals so the original large-screen
 * appearance remains 1:1 while laptops, tablets and phones become usable.
 */

.mobile-nav-toggle {
  display: none;
}

@media (max-width: 1600px) {
  html,
  body {
    max-width: 100%;
    overflow-x: hidden;
  }

  .header_nav,
  .KTZ,
  .KTZ_des,
  .res_title_bj,
  .pub_title_bj,
  .pub_title,
  .max_back,
  .pub_1_bj,
  .pub_2_bj,
  .pub_3_bj,
  .pub_1 {
    min-width: 0 !important;
  }

  .KTZ_DFLG_wang,
  .KTZ_des_word,
  .res_sta_bj_z,
  .res_doc1_bj {
    width: calc(100% - 48px);
    max-width: 1300px;
  }

  body > hr,
  .header_bg + hr,
  .phd_pos_ms + hr {
    width: calc(100% - 48px) !important;
    max-width: 1300px;
  }

  .KTZ_des_title {
    width: 49.23%;
  }

  .KTZ_des_img {
    width: 42.31%;
  }

  .new_item,
  #positons_,
  #bilibili,
  #internal,
  #template,
  #high_light,
  .team_bg {
    width: calc(100% - 48px);
    max-width: 1200px;
  }

  #template #allRec #RecLi {
    width: 100%;
  }

  .team_pi {
    width: calc(100% - 48px);
    max-width: 1000px;
  }

  .phd_pos_ms {
    width: calc(100% - 48px);
    max-width: 1100px;
  }

  .rap_bj,
  .posdoc_bj,
  .phd_bj,
  .assistent_bj,
  .alumin_bj {
    width: 100%;
    justify-content: center;
  }

  .team_img {
    max-width: calc(100% - 48px);
    background-size: contain;
    background-position: center top;
  }

  #template .line {
    border-left-width: min(41.6667vw, 500px);
    border-right-width: min(41.6667vw, 500px);
  }
}

@media (max-width: 1280px) {
  .nav_div {
    margin-right: 24px;
    font-size: 18px;
  }

  .header_nav li {
    margin-left: 16px;
  }

  .KTZ_DFLG_logo_div {
    width: auto;
  }

  .KTZ_DFLG_logo_div img,
  .KTZ_DFLG_logo {
    width: 250px;
    height: auto;
  }

  .pub_title {
    width: calc(100% - 48px);
    max-width: 1200px;
    float: none;
  }

  #btn {
    width: calc(100% - 48px);
    max-width: 900px;
    height: auto;
    margin: 0 auto;
    gap: 10px;
    flex-wrap: wrap;
  }

  #template #allRec #RecLi .Recdiv {
    width: calc(100% - 370px);
  }

  #template #allRec #RecLi img {
    width: 340px;
  }
}

@media (max-width: 1024px) {
  .header_bg {
    height: 145px;
  }

  .header_nav {
    height: 72px;
    min-width: 0;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.08);
  }

  .KTZ_DFLG_logo_div {
    top: 0;
    left: 16px;
    width: auto;
    margin-left: 0;
  }

  .KTZ_DFLG_logo_div img,
  .KTZ_DFLG_logo {
    width: 218px;
    height: auto;
    margin-top: 10px;
    float: none;
  }

  .mobile-nav-toggle {
    position: fixed;
    z-index: 40;
    top: 16px;
    right: 18px;
    display: inline-flex;
    width: 42px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: #333;
    cursor: pointer;
  }

  .mobile-nav-toggle::before,
  .mobile-nav-toggle::after,
  .mobile-nav-toggle span {
    position: absolute;
    width: 24px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    content: "";
    transition: transform 0.2s ease, opacity 0.2s ease, top 0.2s ease;
  }

  .mobile-nav-toggle::before {
    top: 12px;
  }

  .mobile-nav-toggle span {
    top: 19px;
  }

  .mobile-nav-toggle::after {
    top: 26px;
  }

  .header_nav.is-open .mobile-nav-toggle::before {
    top: 19px;
    transform: rotate(45deg);
  }

  .header_nav.is-open .mobile-nav-toggle span {
    opacity: 0;
  }

  .header_nav.is-open .mobile-nav-toggle::after {
    top: 19px;
    transform: rotate(-45deg);
  }

  .nav_div {
    position: fixed;
    z-index: 35;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    width: 100%;
    max-height: calc(100vh - 72px);
    margin: 0;
    padding: 8px 18px 18px;
    overflow-y: auto;
    float: none;
    background: rgba(255, 255, 255, 0.985);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.12);
    font-size: 18px;
  }

  .header_nav.is-open .nav_div {
    display: block;
  }

  .nav_div li,
  .header_nav li {
    width: 100%;
    margin: 0;
    float: none;
    border-bottom: 1px solid #eef1f4;
  }

  .nav_div li:last-child {
    border-bottom: 0;
  }

  .nav_div a,
  .nav_div p {
    display: block;
    width: 100%;
  }

  .nav_div p {
    padding: 12px 6px;
  }

  body.nav-open {
    overflow: hidden;
  }

  .KTZ {
    height: 73px;
    margin-top: 72px;
  }

  .KTZ_Team,
  .KTZ_DFLG_wang {
    height: 73px;
  }

  .KTZ_Team_span {
    padding-top: 21px;
    font-size: 34px;
  }

  .KTZ_DFLG_wang_span {
    display: block;
    margin-top: 0;
    padding-top: 13px;
    font-size: 34px;
  }

  .KTZ_des {
    height: auto;
    min-height: 0;
    margin-top: 16px;
    padding: 24px 0;
    float: none;
    background-size: cover;
    background-position: center;
  }

  .KTZ_des_word {
    position: relative;
    inset: auto;
    display: flex;
    height: auto;
    gap: 28px;
    align-items: center;
  }

  .KTZ_des_title,
  .KTZ_des_img {
    height: auto;
    margin: 0;
    float: none;
  }

  .KTZ_des_title {
    width: 52%;
  }

  .KTZ_des_img {
    width: calc(48% - 28px);
    aspect-ratio: 55 / 38;
    background-size: cover;
    background-position: center;
  }

  .lb-box {
    width: calc(100% - 48px);
    max-width: 960px;
    height: auto;
    aspect-ratio: 48 / 29;
  }

  .lb-content,
  .lb-item,
  .lb-item > a {
    height: 100%;
  }

  .lb-item > a > img {
    object-fit: cover;
  }

  .team_des_pi {
    height: auto;
    min-height: 450px;
  }

  .team_pi {
    min-height: 420px;
  }

  .res_sta_bj_z,
  .res_doc1_bj,
  .res_title {
    width: calc(100% - 48px);
    max-width: 100%;
  }

  .res_baterry_left img {
    max-width: 100%;
    height: auto;
  }

  .res_title_bj {
    height: auto;
    min-height: 30px;
  }

  .res_title {
    height: auto;
  }

  .pub_title_bj,
  .pub_title {
    height: auto;
  }

  .pub_title_bj {
    margin-bottom: 12px;
  }

  .highlight-slider {
    width: calc(100% - 48px);
  }

  #template {
    margin-top: 50px;
  }

  #template .line {
    margin-top: 70px;
    border-left: 0;
    border-right: 0;
    border-bottom: 2px dashed #e9efe9;
    line-height: 1.4;
    padding-bottom: 8px;
  }

  #template #allRec #RecLi {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    height: auto;
    min-height: 200px;
  }

  #template #allRec #RecLi .Recdiv {
    position: static;
    flex: 1 1 auto;
    width: auto;
    height: auto;
    min-width: 0;
  }

  #template #allRec #RecLi .Recdiv p {
    height: auto;
    max-height: 120px;
  }

  #template #allRec #RecLi img {
    flex: 0 0 30%;
    width: 30%;
    max-width: 300px;
    height: 180px;
    object-fit: contain;
    float: none;
  }

  .new_item {
    top: 30px;
  }

  .new_item ol li img {
    max-width: 100% !important;
    height: auto !important;
  }

  #positons_ {
    top: 35px;
    height: auto;
    padding-bottom: 70px;
    font-size: 21px;
    line-height: 1.5;
  }

  #bilibili {
    height: auto;
    padding-bottom: 30px;
  }

  #bilibili iframe {
    width: min(700px, 100%);
    height: auto;
    aspect-ratio: 700 / 410;
  }

  #internal {
    padding: 16px 0 30px;
  }

  #internal_res {
    height: auto;
    min-height: 120px;
  }

  .pv_num {
    clear: both;
    height: auto;
    min-height: 50px;
    padding: 14px 12px;
    box-sizing: border-box;
  }
}

@media (max-width: 768px) {
  .KTZ_DFLG_wang,
  .KTZ_des_word,
  .res_sta_bj_z,
  .res_doc1_bj,
  .res_title,
  .new_item,
  #positons_,
  #bilibili,
  #internal,
  #template,
  #high_light,
  .team_bg,
  .team_pi,
  .phd_pos_ms,
  body > hr,
  .header_bg + hr,
  .phd_pos_ms + hr {
    width: calc(100% - 32px) !important;
  }

  .KTZ_des_word {
    display: block;
  }

  .KTZ_des_title,
  .KTZ_des_img {
    width: 100%;
  }

  .KTZ_des_title {
    margin-bottom: 18px;
  }

  .KTZ_des_img {
    aspect-ratio: 16 / 9;
  }

  .KTZ_des_title span[style*="font-size:18px"] {
    line-height: 1.75 !important;
  }

  .lb_img_title {
    height: auto;
    padding: 8px 16px 0;
    box-sizing: border-box;
  }

  .lb_img_title h2 {
    font-size: 24px !important;
  }

  .lb_img_title hr {
    max-width: 70%;
  }

  .lb-box {
    width: calc(100% - 32px);
    aspect-ratio: 4 / 3;
  }

  .lb-item > a > span {
    box-sizing: border-box;
    padding: 10px;
    font-size: 12px;
  }

  .lb-sign {
    transform: scale(0.85);
    transform-origin: top right;
  }

  .team_des_pi {
    margin-top: 45px;
    min-height: 0;
  }

  .team_pi {
    display: flex;
    flex-direction: column;
    min-height: 0;
  }

  .pi_img {
    width: min(240px, 72vw);
    height: 350px;
    margin: 0 auto 24px;
    float: none;
  }

  .pi_des {
    width: 100%;
    margin-left: 0;
  }

  .pi_des_span1 {
    text-align: center;
  }

  .pi_img_email2 {
    display: flex;
    width: 100%;
    height: auto;
    min-height: 32px;
    padding: 8px 0;
    align-items: center;
    gap: 10px;
    float: none;
    flex-wrap: wrap;
  }

  .pi_img_email2 img,
  .pi_img_email2 a,
  .pi_img_email2 span {
    position: static;
    margin: 0;
  }

  .pi_img_email2 span {
    margin-left: auto;
  }

  .pi_img_email3 {
    width: 100%;
    margin-top: 6px;
  }

  .rap_bj,
  .posdoc_bj,
  .phd_bj,
  .assistent_bj,
  .alumin_bj {
    gap: 16px;
  }

  .posdoc_bj_des,
  .phd_researcher,
  .assistent_researcher {
    width: calc(50% - 8px);
    height: auto;
    min-height: 330px;
  }

  .posdoc_bj_des img,
  .phd_researcher img,
  .assistent_researcher img {
    max-width: 100%;
    height: auto;
  }

  .res_sta_doc_sp {
    font-size: 10.5pt;
    line-height: 1.65;
  }

  .res_title_ys {
    font-size: 17pt;
  }

  #btn button {
    flex: 1 1 180px;
    font-size: 16px;
    padding: 8px 12px;
  }

  #template #allRec #RecLi {
    display: block;
    margin-top: 36px;
  }

  #template #allRec #RecLi .Recdiv {
    width: 100%;
  }

  #template #allRec #RecLi .Recdiv p {
    max-height: none;
  }

  #template #allRec #RecLi img {
    display: block;
    width: min(340px, 100%);
    max-width: 100%;
    height: auto;
    margin: 16px auto 0;
  }

  .slider-button {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .new_item ol {
    font-size: 16px;
  }

  .new_item ol li span {
    font-size: 18px;
  }

  #positons_ {
    font-size: 18px;
  }

  #positons_ h2 {
    font-size: 22px;
  }

  #positons_ ol li {
    list-style-position: outside;
    margin-left: 24px;
    text-indent: 0;
  }

  #bilibili {
    padding-top: 24px;
  }

  #bilibili h2 {
    font-size: 18px;
    line-height: 1.45;
  }

  #internal h2 {
    font-size: 30px;
  }

  #internal input {
    max-width: 100%;
    margin: 5px 2px;
    box-sizing: border-box;
  }

  .team_bg {
    height: auto;
    min-height: 130px;
  }

  .team_des {
    height: auto;
    min-height: 130px;
    padding: 12px 0;
  }

  .team_img {
    width: calc(100% - 32px);
    height: auto;
    aspect-ratio: 16 / 7;
  }
}

@media (max-width: 480px) {
  .header_bg {
    height: 132px;
  }

  .header_nav {
    height: 64px;
  }

  .KTZ_DFLG_logo_div {
    left: 10px;
  }

  .KTZ_DFLG_logo_div img,
  .KTZ_DFLG_logo {
    width: 185px;
    margin-top: 9px;
  }

  .mobile-nav-toggle {
    top: 12px;
    right: 10px;
  }

  .nav_div {
    top: 64px;
    max-height: calc(100vh - 64px);
  }

  .KTZ {
    height: 68px;
    margin-top: 64px;
  }

  .KTZ_Team,
  .KTZ_DFLG_wang {
    height: 68px;
  }

  .KTZ_Team_span {
    padding-top: 21px;
    font-size: 29px;
  }

  .KTZ_DFLG_wang_span {
    padding-top: 16px;
    font-size: 28px;
    line-height: 1.2;
  }

  .KTZ_des {
    margin-top: 10px;
    padding: 18px 0;
  }

  .KTZ_des_title span[style*="font-size:20px"] {
    font-size: 18px !important;
  }

  .KTZ_des_title p[style*="font-size:18px"] {
    font-size: 15px !important;
    line-height: 1.45;
  }

  .KTZ_des_title span[style*="font-size:18px"] {
    font-size: 15px !important;
  }

  .lb-box {
    aspect-ratio: 1 / 1;
    margin-top: 8px;
  }

  .lb-sign {
    display: none;
  }

  .lb-ctrl {
    font-size: 28px;
  }

  .pi_des_span1 {
    font-size: 24px;
  }

  .pi_des_span2 {
    font-size: 14px;
  }

  .pi_des_style1 {
    padding-inline-start: 22px;
  }

  .pi_img_email2 span {
    width: 100%;
    margin-left: 30px;
  }

  .team_phd_std {
    height: auto;
    min-height: 50px;
    margin-top: 22px;
  }

  .posdoc_bj_des,
  .phd_researcher,
  .assistent_researcher {
    width: 100%;
    min-height: 0;
    margin: 18px 0;
  }

  .pub_title h1 {
    font-size: 17px !important;
    line-height: 1.55 !important;
  }

  #btn {
    width: calc(100% - 32px);
  }

  #btn button {
    flex-basis: 100%;
  }

  .highlight-slider {
    width: calc(100% - 32px);
  }

  .slider-track img {
    height: 240px;
  }

  #template {
    margin-top: 28px;
  }

  #template #allRec {
    font-size: 18px;
  }

  #template #allRec #RecLi .Recdiv h2,
  #template #allRec #RecLi .Recdiv h5,
  #template #allRec #RecLi .Recdiv p,
  #template #allRec #RecLi .Recdiv a {
    overflow-wrap: anywhere;
  }

  #template #allRec #RecLi .Recdiv p {
    font-size: 16px;
  }

  .new_item {
    top: 18px;
  }

  #positons_ {
    top: 20px;
    font-size: 16px;
    line-height: 1.55;
  }

  #positons_ h2 {
    font-size: 19px;
  }

  #positons_ h5 {
    line-height: 1.5;
  }

  #internal h2 {
    font-size: 26px;
  }

  #internal input,
  #internal #inputPN {
    width: 100%;
    margin: 5px 0;
  }

  .pv_num {
    margin-top: 28px;
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav-toggle::before,
  .mobile-nav-toggle::after,
  .mobile-nav-toggle span,
  .slider-track,
  .slider-track img {
    transition: none !important;
  }
}


/* v2 fixes: team row alignment + co-authored publication reflow */
@media (max-width: 1600px) {
  .rap_bj,
  .posdoc_bj,
  .phd_bj,
  .assistent_bj,
  .alumin_bj {
    justify-content: flex-start;
  }
}

.team-photo-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
  border-radius: 5px;
  background: #eef2f5;
  color: #67727e;
  font-family: 'PT Sans', Arial, sans-serif;
  font-size: 42px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

@media (max-width: 1024px) {
  #template > ol#allpub {
    box-sizing: border-box;
    width: 100%;
    margin: 0;
    padding-left: 32px;
    list-style-position: outside;
    font-size: 20px;
  }

  #template > ol#allpub > li {
    position: static;
    width: 100%;
    height: auto;
    min-height: 0;
    margin: 30px 0 0;
    padding-left: 4px;
    box-sizing: border-box;
  }

  #template > ol#allpub > li > div {
    position: static;
    float: none;
    width: 100%;
    height: auto;
    min-height: 0;
  }

  #template > ol#allpub > li > div h2 {
    height: auto;
    margin-top: 0;
    font-size: 16px;
    line-height: 1.4;
    overflow-wrap: anywhere;
    word-break: normal;
  }

  #template > ol#allpub > li > div h5 {
    height: auto;
    margin-top: 8px;
    font-size: 14px;
    line-height: 1.5;
    overflow-wrap: anywhere;
    word-break: normal;
  }

  #template > ol#allpub > li > div a {
    font-size: 16px;
    line-height: inherit;
  }
}

@media (max-width: 768px) {
  .rap_bj,
  .posdoc_bj,
  .phd_bj,
  .assistent_bj,
  .alumin_bj {
    justify-content: flex-start;
  }

  #template > ol#allpub {
    padding-left: 28px;
    font-size: 18px;
  }

  #template > ol#allpub > li {
    margin-top: 26px;
  }
}

@media (max-width: 480px) {
  #template > ol#allpub {
    padding-left: 24px;
    font-size: 17px;
  }

  #template > ol#allpub > li {
    margin-top: 22px;
    padding-left: 2px;
  }

  #template > ol#allpub > li > div h2 {
    font-size: 15px;
    line-height: 1.45;
  }

  #template > ol#allpub > li > div h5 {
    font-size: 13px;
    line-height: 1.5;
  }

  #template > ol#allpub > li > div a {
    font-size: 15px;
  }
}