:root { --portal-blue: #0d3f74; --portal-ink: #333; --portal-muted: #666; --portal-border: #d5d5d5; --portal-pale: #f5f7f9; --portal-shell: min(1200px, calc(100% - 48px)); }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.portal-page { margin: 0; color: var(--portal-ink); background: #fff; font-family: "Microsoft YaHei", "微软雅黑", Arial, sans-serif; font-size: 16px; line-height: 1.75; }
.portal-baseline-mobile, .portal-footer__baseline-mobile, .portal-brand__inner--baseline-mobile { display: none; }
.portal-shell { width: var(--portal-shell); margin: 0 auto; }
.portal-skip-link { position: fixed; z-index: 99; top: 8px; left: 8px; padding: 8px 12px; color: #fff; background: var(--portal-blue); transform: translateY(-200%); }
.portal-skip-link:focus { transform: translateY(0); }
.portal-topbar { background: var(--portal-blue); color: rgba(255,255,255,.9); font-size: 13px; }
.portal-topbar__inner { display: flex; min-height: 34px; align-items: center; justify-content: space-between; gap: 20px; }
.portal-topbar a { color: inherit; text-decoration: none; }
.portal-topbar a + a { margin-left: 18px; }
.portal-brand { background: #fff; border-bottom: 1px solid #e5e5e5; }
.portal-brand__inner { display: flex; min-height: 108px; align-items: center; gap: 30px; }
.portal-brand__inner > img { display: block; width: 285px; max-height: 70px; object-fit: contain; object-position: left center; }
.portal-brand__inner > .portal-brand__logo { width: 76px; height: 76px; max-height: none; object-position: center; }
.portal-brand__lab { padding-left: 30px; border-left: 1px solid var(--portal-border); }
.portal-brand__lab strong { display: block; color: var(--portal-blue); font-size: 25px; font-weight: 600; letter-spacing: .03em; }
.portal-brand__lab small { display: block; margin-top: 4px; color: var(--portal-muted); font-family: Arial, sans-serif; font-size: 11px; letter-spacing: .04em; }
.portal-brand__inner > p { margin: 0 0 0 auto; color: #71849a; font-size: 16px; letter-spacing: .12em; white-space: nowrap; }
.portal-nav { position: relative; z-index: 20; background: var(--portal-blue); }
.portal-nav__inner { display: flex; min-height: 52px; align-items: stretch; }
.portal-nav a { display: block; color: #fff; text-decoration: none; }
.portal-nav__inner > a, .portal-nav__item > a { padding: 14px 23px; font-size: 16px; font-weight: 500; white-space: nowrap; }
.portal-nav__inner > a:hover, .portal-nav__inner > a.is-active, .portal-nav__item > a:hover, .portal-nav__item:focus-within > a { background: rgba(255,255,255,.16); }
.portal-nav__item { position: relative; }
.portal-subnav { position: absolute; z-index: 30; top: 100%; left: 0; display: none; min-width: 172px; padding: 6px 0; background: #fff; border: 1px solid var(--portal-border); box-shadow: 0 6px 18px rgba(0,0,0,.08); }
.portal-nav__item:hover .portal-subnav, .portal-nav__item:focus-within .portal-subnav { display: block; }
.portal-subnav a { padding: 8px 16px; color: var(--portal-ink); font-size: 14px; white-space: nowrap; }
.portal-subnav a:hover, .portal-subnav a:focus { color: #fff; background: var(--portal-blue); }
.portal-banner { position: relative; min-height: 460px; overflow: hidden; color: #fff; background: #234f7e; }
.portal-banner__slides, .portal-banner__slide, .portal-banner__slide img { position: absolute; inset: 0; width: 100%; height: 100%; }
.portal-banner__slide { margin: 0; opacity: 0; transition: opacity 700ms ease; }
.portal-banner__slide.is-active { opacity: 1; }
.portal-banner__slide img { object-fit: cover; }
.portal-banner__control { position: absolute; z-index: 3; top: 50%; display: grid; width: 42px; height: 56px; padding: 0; place-items: center; color: rgba(255,255,255,.35); background: transparent; border: 0; font-size: 36px; font-weight: 300; line-height: 1; cursor: pointer; opacity: .12; transform: translateY(-50%); transition: opacity 180ms ease, color 180ms ease; }
.portal-banner:hover .portal-banner__control, .portal-banner__control:focus-visible { color: #fff; opacity: .9; outline: 1px solid rgba(255,255,255,.72); outline-offset: -6px; }
.portal-banner__control--previous { left: max(18px, calc((100% - 1280px) / 2)); }
.portal-banner__control--next { right: max(18px, calc((100% - 1280px) / 2)); }
.portal-banner__dots { position: absolute; z-index: 3; right: 0; bottom: 22px; left: 0; display: flex; justify-content: center; gap: 9px; }
.portal-banner__dots button { width: 9px; height: 9px; padding: 0; background: rgba(255,255,255,.56); border: 1px solid rgba(255,255,255,.9); border-radius: 50%; cursor: pointer; }
.portal-banner__dots button.is-active { background: #fff; }
@media (min-width: 1025px) {
  .portal-banner { min-height: clamp(420px, 25vw, 500px); }
  .portal-banner__slide:first-child img { object-position: center bottom; }
}
.portal-section { padding: 55px 0; }
.portal-content-hub { border-bottom: 1px solid var(--portal-border); }
.portal-content-hub__grid { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(0,1fr); gap: 34px 44px; }
.portal-content-hub__grid > :nth-child(even) { padding-left: 32px; border-left: 1px solid var(--portal-border); }
.portal-section-title { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 18px; border-bottom: 2px solid var(--portal-blue); }
.portal-section-title h2, .portal-heading h2 { margin: 0; color: var(--portal-blue); font-size: 23px; font-weight: 600; line-height: 1.35; }
.portal-section-title h2 { padding-bottom: 10px; }
.portal-section-title a { padding-bottom: 10px; color: var(--portal-muted); font-size: 14px; text-decoration: none; white-space: nowrap; }
.portal-section-title a:hover { color: var(--portal-blue); }
.portal-feature { display: grid; grid-template-columns: 235px minmax(0,1fr); gap: 21px; margin-bottom: 12px; }
.portal-feature > a { height: 132px; overflow: hidden; background: var(--portal-pale); }
.portal-feature img, .portal-intro__visual img { width: 100%; height: 100%; object-fit: cover; }
.portal-feature__placeholder { display: grid; height: 100%; place-items: center; color: var(--portal-blue); font-size: 15px; }
.portal-feature h3 { margin: 3px 0 9px; font-size: 18px; font-weight: 600; line-height: 1.55; }
.portal-feature h3 a, .portal-list a, .portal-notice-list a { color: var(--portal-ink); text-decoration: none; }
.portal-feature h3 a:hover, .portal-list a:hover, .portal-notice-list a:hover { color: var(--portal-blue); }
.portal-feature p { display: -webkit-box; margin: 0; overflow: hidden; color: var(--portal-muted); font-size: 14px; line-height: 1.7; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.portal-list, .portal-notice-list { margin: 0; padding: 0; list-style: none; }
.portal-list li { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 18px; padding: 9px 0; border-top: 1px dashed #d9d9d9; }
.portal-list a { overflow: hidden; font-size: 15px; text-overflow: ellipsis; white-space: nowrap; }
.portal-list time, .portal-notice-list time { color: var(--portal-muted); font-size: 13px; }
.portal-notice-list li { display: grid; grid-template-columns: 60px minmax(0,1fr); gap: 13px; padding: 10px 0; border-top: 1px dashed #d9d9d9; }
.portal-notice-list time { display: grid; grid-template-rows: auto 1fr; min-height: 51px; overflow: hidden; color: #fff; background: var(--portal-blue); border: 1px solid var(--portal-blue); text-align: center; }
.portal-notice-list time small { display: block; padding: 3px 2px 1px; color: #fff; font-size: 11px; line-height: 1.2; white-space: nowrap; }
.portal-notice-list time strong { display: grid; place-items: center; color: var(--portal-blue); background: #fff; font-size: 19px; font-weight: 600; line-height: 1.1; }
.portal-notice-list a { align-self: center; overflow: hidden; color: var(--portal-ink); font-size: 15px; line-height: 1.6; text-decoration: none; text-overflow: ellipsis; }
.portal-notice-list a:hover { color: var(--portal-blue); }
.portal-research { background: var(--portal-pale); }
.portal-heading { margin-bottom: 26px; }
.portal-heading h2 { margin-bottom: 8px; font-size: 26px; }
.portal-heading p { margin: 0; color: var(--portal-muted); font-size: 15px; }
.portal-heading--with-badge { display: flex; align-items: center; gap: 10px; }
.portal-heading--with-badge img { width: 28px; height: 28px; object-fit: contain; }
.portal-research-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.portal-research-grid article { overflow: hidden; background: #fff; border: 1px solid var(--portal-border); }
.portal-research-grid article > img { display: block; width: 100%; aspect-ratio: 16 / 8; object-fit: cover; border-bottom: 3px solid var(--portal-blue); }
.portal-research-grid article > div { padding: 19px 21px 20px; }
.portal-research-grid span { color: #8ca3b9; font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.portal-research-grid h3 { min-height: 49px; margin: 7px 0 8px; color: var(--portal-blue); font-size: 18px; font-weight: 600; line-height: 1.4; }
.portal-research-grid p { min-height: 74px; margin: 0; color: #555; font-size: 14px; line-height: 1.75; }
.portal-research-grid ul { display: flex; flex-wrap: wrap; gap: 5px 8px; min-height: 52px; margin: 13px 0 15px; padding: 0; list-style: none; }
.portal-research-grid li { color: #54718d; font-size: 13px; }
.portal-research-grid li:not(:last-child)::after { margin-left: 8px; color: #b3c3d2; content: "·"; }
.portal-research-grid a { color: var(--portal-blue); font-size: 14px; font-weight: 600; text-decoration: none; }
.portal-research-grid a:hover { text-decoration: underline; }
.portal-list--typed li { grid-template-columns: 92px minmax(0,1fr) auto; }
.portal-list--typed span { overflow: hidden; color: var(--portal-blue); font-size: 13px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.portal-footer { color: rgba(255,255,255,.88); background: var(--portal-blue); }
.portal-footer__main { display: flex; align-items: center; gap: 22px; padding: 32px 0 24px; }
.portal-footer__main--plaques { justify-content: space-between; gap: 30px; padding: 24px 0 20px; }
.portal-footer__info { display: flex; flex: 0 1 54%; align-items: center; gap: 20px; min-width: 0; }
.portal-footer__plaques { display: grid; flex: 0 1 46%; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: center; gap: 12px; min-width: 0; }
.portal-footer__plaques img { display: block; width: 100%; max-width: 150px; height: 100px; justify-self: center; object-fit: contain; }
.portal-footer__marks { display: flex; align-items: center; gap: 10px; }
.portal-footer__marks img { width: 65px; height: 65px; object-fit: contain; background: #fff; border-radius: 50%; }
.portal-footer__marks .portal-footer__lab-mark { background: transparent; border-radius: 0; }
.portal-footer strong { display: block; margin-bottom: 5px; color: #fff; font-size: 17px; font-weight: 500; }
.portal-footer address { color: rgba(255,255,255,.78); font-size: 13px; font-style: normal; line-height: 1.85; }
.portal-footer__bottom { display: flex; justify-content: space-between; width: var(--portal-shell); margin: 0 auto; padding: 12px 0; border-top: 1px solid rgba(255,255,255,.22); color: rgba(255,255,255,.66); font-size: 12px; }
.portal-footer__bottom--details { justify-content: flex-start; gap: 13px; }
.portal-footer__bottom--details i { color: rgba(255,255,255,.5); font-style: normal; }
.portal-empty { padding: 12px 0; color: var(--portal-muted); font-size: 14px; }
.research-detail { padding: 34px 0 70px; }
.research-detail__crumb { margin: 0 0 25px; color: var(--portal-muted); font-size: 14px; }
.research-detail__crumb a { color: var(--portal-blue); text-decoration: none; }
.research-detail__crumb span { margin: 0 8px; color: #9aa8b4; }
.research-detail__hero { display: block; margin-bottom: 30px; padding: 30px 34px; background: var(--portal-pale); border-top: 4px solid var(--portal-blue); }
.research-detail__hero span { color: #7894af; font-size: 15px; font-weight: 600; letter-spacing: .1em; }
.research-detail__hero h1 { margin: 8px 0 12px; color: var(--portal-blue); font-size: 31px; font-weight: 600; line-height: 1.35; }
.research-detail__hero p { margin: 0; color: #4d4d4d; font-size: 16px; line-height: 1.9; }
.research-detail__hero img { width: 100%; height: 220px; object-fit: cover; border: 1px solid var(--portal-border); }
.research-detail section { padding: 23px 0; border-bottom: 1px solid var(--portal-border); }
.research-detail section h2 { margin: 0 0 11px; color: var(--portal-blue); font-size: 21px; font-weight: 600; }
.research-detail section p { max-width: 900px; margin: 0; color: #4d4d4d; font-size: 16px; line-height: 1.9; }
.research-detail section p + p { margin-top: 12px; }
.research-detail__items { display: grid; gap: 13px; max-width: 900px; margin: 0; padding: 0; list-style: none; counter-reset: research-item; }
.research-detail__items li { position: relative; padding-left: 32px; color: #4d4d4d; font-size: 16px; line-height: 1.85; }
.research-detail__items li::before { position: absolute; left: 0; color: var(--portal-blue); content: counter(research-item, decimal-leading-zero); counter-increment: research-item; font-size: 13px; font-weight: 600; }
.research-detail__items strong { color: var(--portal-blue); font-weight: 600; }
.research-detail__items span { margin-left: 4px; }
.research-detail__keywords { display: flex; flex-wrap: wrap; gap: 9px; margin: 0; padding: 0; list-style: none; }
.research-detail__keywords li { padding: 6px 12px; color: var(--portal-blue); background: #fff; border: 1px solid #b6c8d9; font-size: 14px; }
.research-detail__back { margin: 28px 0 0; }
.research-detail__back a { color: var(--portal-blue); font-size: 15px; text-decoration: none; }
/* Desktop-only: keep the four portal information modules compact without changing tablet/mobile. */
@media (min-width: 1025px) {
  .portal-content-hub { padding: 45px 0; }
  .portal-content-hub__grid { gap: 26px 36px; }
  .portal-content-hub__grid > :nth-child(even) { padding-left: 26px; }
  .portal-content-hub .portal-section-title { margin-bottom: 13px; }
  .portal-content-hub .portal-section-title h2 { padding-bottom: 8px; font-size: 21px; }
  .portal-content-hub .portal-section-title a { padding-bottom: 8px; font-size: 13px; }
  .portal-content-hub .portal-feature { grid-template-columns: 210px minmax(0, 1fr); gap: 17px; margin-bottom: 8px; }
  .portal-content-hub .portal-feature > a { height: 118px; }
  .portal-content-hub .portal-feature h3 { margin: 1px 0 6px; font-size: 17px; line-height: 1.45; }
  .portal-content-hub .portal-feature p { font-size: 13px; line-height: 1.6; }
  .portal-content-hub .portal-list li { gap: 14px; padding: 7px 0; }
  .portal-content-hub .portal-list a { font-size: 14px; }
  .portal-content-hub .portal-list time { font-size: 12px; }
  .portal-content-hub .portal-list--typed li { grid-template-columns: 82px minmax(0, 1fr) auto; }
  .portal-content-hub .portal-list--typed span { font-size: 12px; }
  .portal-content-hub .portal-notice-list li { grid-template-columns: 56px minmax(0, 1fr); gap: 11px; padding: 7px 0; }
  .portal-content-hub .portal-notice-list time { min-height: 46px; }
  .portal-content-hub .portal-notice-list time small { font-size: 10px; }
  .portal-content-hub .portal-notice-list time strong { font-size: 17px; }
  .portal-content-hub .portal-notice-list a { font-size: 14px; line-height: 1.5; }
  .portal-research { padding: 36px 0; }
  .portal-research .portal-heading { margin-bottom: 14px; }
  .portal-research .portal-heading h2 { margin-bottom: 3px; font-size: 22px; }
  .portal-research .portal-heading p { font-size: 13px; line-height: 1.5; }
  .portal-research-grid { gap: 12px; }
  .portal-research-grid article > img { height: clamp(126px, 9.5vw, 138px); aspect-ratio: auto; }
  .portal-research-grid article > div { padding: 11px 14px 12px; }
  .portal-research-grid h3 { min-height: 25px; margin: 3px 0 5px; font-size: 16px; line-height: 1.35; }
  .portal-research-grid p { min-height: 58px; font-size: 12.5px; line-height: 1.55; }
  .portal-research-grid ul { min-height: 29px; margin: 7px 0 8px; }
  .portal-research-grid li, .portal-research-grid a { font-size: 13px; }
}
@media (max-width: 1024px) { .portal-desktop-0919, .portal-footer__desktop0919, .portal-brand__inner--desktop0919 { display: none; } .portal-baseline-mobile, .portal-footer__baseline-mobile { display: block; } .portal-brand__inner--baseline-mobile { display: flex; } .portal-brand__inner { min-height: 86px; gap: 18px; } .portal-brand__inner > img { width: 220px; } .portal-brand__lab strong { font-size: 20px; } .portal-brand__inner > p { display: none; } .portal-nav__inner { flex-wrap: wrap; } .portal-nav__inner > a, .portal-nav__item > a { padding: 12px 15px; } .portal-content-hub__grid { gap: 26px; } .portal-research-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .research-detail__hero { grid-template-columns: 1fr; } }
@media (max-width: 767px) { :root { --portal-shell: min(100% - 28px, 1200px); } .portal-topbar__inner { justify-content: center; } .portal-topbar__inner > span { display: none; } .portal-brand__inner { min-height: 74px; } .portal-brand__inner > img { width: 155px; } .portal-brand__lab { padding-left: 14px; } .portal-brand__lab strong { font-size: 15px; } .portal-brand__lab small { display: none; } .portal-nav__inner { justify-content: center; } .portal-nav__inner > a, .portal-nav__item > a { padding: 9px 10px; font-size: 14px; } .portal-subnav { display: none !important; } .portal-banner { min-height: 270px; } .portal-banner__control { width: 32px; height: 43px; font-size: 28px; } .portal-banner__control--previous { left: 7px; } .portal-banner__control--next { right: 7px; } .portal-section { padding: 34px 0; } .portal-content-hub__grid { grid-template-columns: 1fr; } .portal-content-hub__grid > :nth-child(even) { padding-left: 0; border-left: 0; } .portal-feature { grid-template-columns: 1fr; } .portal-feature > a { height: 170px; } .portal-research-grid { grid-template-columns: 1fr; } .portal-footer__main { align-items: flex-start; } .portal-footer__bottom { gap: 12px; flex-direction: column; } .research-detail { padding: 24px 0 45px; } .research-detail__hero { padding: 24px; } .research-detail__hero h1 { font-size: 24px; } .research-detail__items li { padding-left: 28px; font-size: 15px; } }

@media (max-width: 767px) {
  .portal-nav .mobile-nav-hidden { display: none; }

  .portal-mobile-intro[hidden] {
    display: block;
    padding: 28px 0;
    border-bottom: 1px solid var(--portal-border);
    background: #fff;
  }

  .portal-mobile-intro h2 {
    margin: 0 0 12px;
    color: var(--portal-blue);
    font-size: 22px;
    font-weight: 600;
  }

  .portal-mobile-intro p {
    margin: 0;
    color: #444;
    font-size: 15px;
    line-height: 1.75;
  }

  .portal-mobile-intro a {
    display: inline-block;
    margin-top: 12px;
    color: var(--portal-blue);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
  }

  .portal-research {
    padding: 30px 0;
    background: #fff;
  }

  .portal-research .portal-heading {
    margin-bottom: 10px;
  }

  .portal-research .portal-heading h2 {
    margin-bottom: 0;
    font-size: 22px;
  }

  .portal-research .portal-heading > p {
    display: none;
  }

  .portal-research-grid {
    display: block;
  }

  .portal-research-grid article {
    overflow: visible;
    background: transparent;
    border: 0;
    border-top: 1px solid var(--portal-border);
  }

  .portal-research-grid article:last-child {
    border-bottom: 1px solid var(--portal-border);
  }

  .portal-research-grid article > img {
    display: none;
  }

  .portal-research-grid article > div {
    padding: 18px 0 17px;
  }

  .portal-research-grid span {
    display: block;
    color: var(--portal-blue);
    font-size: 13px;
    line-height: 1;
  }

  .portal-research-grid h3 {
    min-height: 0;
    margin: 7px 0 9px;
    font-size: 18px;
    line-height: 1.45;
  }

  .portal-research-grid .portal-research__desktop-copy {
    display: none;
  }

  .portal-research-grid .portal-research__mobile-copy[hidden] {
    display: block;
    min-height: 0;
    margin: 0;
    color: #444;
    font-size: 15px;
    line-height: 1.7;
  }

  .portal-research-grid ul {
    display: none;
  }

  .portal-research-grid a {
    display: inline-block;
    margin-top: 11px;
    font-size: 14px;
  }

  .portal-footer__main {
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 27px 0 20px;
    text-align: center;
  }

  .portal-footer__school-mark {
    display: none;
  }

  .portal-footer__lab-mark[hidden] {
    display: block;
    width: 58px;
    height: 58px;
    background: transparent;
    border-radius: 0;
  }

  .portal-footer__identity {
    width: 100%;
  }

  .portal-footer strong {
    margin-bottom: 8px;
    font-size: 18px;
    line-height: 1.5;
  }

  .portal-footer address {
    font-size: 12px;
    line-height: 1.75;
    overflow-wrap: anywhere;
  }

  .portal-footer__bottom {
    align-items: center;
    padding: 10px 0 14px;
    text-align: center;
  }
}

/* Responsive brand and footer for the existing compact navigation breakpoint. */
@media (max-width: 1024px) {
  .research-brand-legacy { display: none; }
  .research-brand-mobile[hidden] { display: block; }
  .portal-footer__baseline-mobile .portal-footer__main { flex-direction: column; align-items: center; gap: 10px; padding: 27px 0 20px; text-align: center; }
  .portal-footer__baseline-mobile .portal-footer__lab-mark { display: block; width: 65px; height: 65px; object-fit: contain; background: transparent; border-radius: 0; }
  .portal-footer__baseline-mobile .portal-footer__identity { width: 100%; min-width: 0; }
  .portal-footer__baseline-mobile address { overflow-wrap: anywhere; }
  .portal-footer__baseline-mobile .portal-footer__plaques { display: grid; flex: none; width: 100%; grid-template-columns: repeat(3,minmax(0,150px)); justify-content: center; gap: 12px; margin-top: 8px; }
  .portal-footer__baseline-mobile .portal-footer__plaques img { width: 100%; max-width: 150px; height: 100px; object-fit: contain; }
  .portal-footer__baseline-mobile .portal-footer__bottom { flex-direction: row; justify-content: center; flex-wrap: wrap; gap: 4px 8px; text-align: center; }
  .portal-brand__inner--baseline-mobile > .portal-brand__logo { width: 58px; height: 58px; object-fit: contain; background: transparent; flex-shrink: 0; }
  .portal-brand__inner--baseline-mobile .portal-brand__lab { min-width: 0; }
}
@media (max-width: 767px) {
  .portal-footer__baseline-mobile .portal-footer__plaques { grid-template-columns: repeat(2,minmax(0,155px)); gap: 10px 12px; }
  .portal-footer__baseline-mobile .portal-footer__plaques img:nth-child(3) { grid-column: 1 / -1; justify-self: center; }
}