@media (min-width: 769px) {
  body {
    padding-bottom: 0 !important;
  }

  .app-header {
    width: calc(100% - 48px);
    margin: 0 auto;
    padding: 20px 0 14px;
  }

  .app-back {
    position: fixed;
    top: 8px;
    left: 24px;
    z-index: 30;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: auto !important;
    min-width: 104px;
    height: 34px;
    padding: 0 15px;
    border: 1px solid rgba(18, 101, 155, .2);
    border-radius: 999px;
    background: #fff;
    color: #12659b;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(30, 100, 145, .12);
  }

  .column-tabs,
  .column-feed {
    width: calc(100% - 48px);
    max-width: none !important;
    margin-left: auto;
    margin-right: auto;
  }

  .column-tabs {
    padding-left: 0;
    padding-right: 0;
  }

  .column-article-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .column-article {
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 22px;
    min-height: 146px;
    padding: 16px;
    min-width: 0;
  }

  .column-article-cover {
    width: 210px !important;
    min-width: 210px;
    height: 114px !important;
  }

  .column-article-info {
    min-width: 0;
    padding: 4px 0;
  }

  .column-article-info h2 {
    display: block;
    max-width: 100%;
    overflow: hidden;
    color: #12231e;
    font-size: 19px;
    line-height: 1.5;
    text-overflow: ellipsis;
    white-space: nowrap;
    -webkit-line-clamp: unset;
  }

  .column-article-meta {
    flex-wrap: nowrap;
    overflow: hidden;
    white-space: nowrap;
    gap: 10px 12px;
    font-size: 14px;
  }

  .column-article-category {
    padding: 4px 10px;
    font-size: 13px;
  }

  .column-article-views {
    font-size: 13px;
  }

  .bottom-nav {
    display: none !important;
  }

  .desktop-back-top {
    position: fixed;
    right: 32px;
    bottom: 32px;
    z-index: 40;
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    border: 0;
    border-radius: 50%;
    background: linear-gradient(145deg, #12659b, #28b8bd);
    color: #fff;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: .2s ease;
    box-shadow: 0 12px 30px rgba(18, 101, 155, .3);
  }

  .desktop-back-top.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .desktop-back-top::after {
    content: "回到顶部";
    position: absolute;
    right: 64px;
    white-space: nowrap;
    padding: 7px 10px;
    border-radius: 8px;
    background: #12334a;
    color: #fff;
    font-size: 12px;
    opacity: 0;
    transform: translateX(6px);
    transition: .2s ease;
  }

  .desktop-back-top:hover::after {
    opacity: 1;
    transform: translateX(0);
  }
}

.article-reader:not(.open) {
  display: none !important;
}

body.article-page-mode {
  background: #f6f9fb;
}

body.article-page-mode > .app-header,
body.article-page-mode > .column-tabs,
body.article-page-mode > .column-feed,
body.article-page-mode > .bottom-nav,
body.article-page-mode > .column-page-disclaimer,
body.article-page-mode > .desktop-back-top,
body.article-page-mode > .app-search-bar {
  display: none !important;
}

body.article-page-mode .article-reader {
  position: static !important;
  display: block !important;
  min-height: 100vh;
  padding: 40px 24px !important;
  overflow: visible;
  background: #f6f9fb !important;
  opacity: 1 !important;
  pointer-events: auto !important;
}

body.article-page-mode .article-reader > article {
  width: min(920px, 100%) !important;
  min-height: calc(100vh - 80px);
  margin: 0 auto !important;
  padding: 58px 64px !important;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 18px 60px rgba(18, 70, 110, .1);
}

body.article-page-mode .reader-close {
  display: none !important;
}

@media (max-width: 768px) {
  body.article-page-mode .article-reader {
    padding: 0 !important;
  }

  body.article-page-mode .article-reader > article {
    min-height: 100vh;
    padding: 42px 20px !important;
    border-radius: 0;
  }
}

/* Mobile layout hardening: header, list and standalone reader. */
@media (max-width: 768px) {
  body:not(.article-page-mode):not(:has(.article-reader.open)) .app-header {
    position: relative !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    width: 100% !important;
    height: 64px !important;
    min-height: 64px !important;
    margin: 0 !important;
    padding: 0 14px !important;
    gap: 10px !important;
    overflow: visible !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .app-back {
    position: relative !important;
    inset: auto !important;
    z-index: 3 !important;
    flex: 0 0 auto !important;
    width: auto !important;
    min-width: 96px !important;
    height: 40px !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    white-space: nowrap !important;
    word-break: keep-all !important;
    writing-mode: horizontal-tb !important;
    font-size: 16px !important;
    line-height: 40px !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .app-header h1 {
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    z-index: 1 !important;
    width: auto !important;
    max-width: 42vw !important;
    margin: 0 !important;
    transform: translate(-50%, -50%) !important;
    overflow: hidden !important;
    white-space: nowrap !important;
    text-overflow: ellipsis !important;
    font-size: 19px !important;
    line-height: 1.2 !important;
    text-align: center !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) #app-search-btn {
    position: relative !important;
    inset: auto !important;
    z-index: 3 !important;
    flex: 0 0 40px !important;
    width: 40px !important;
    height: 40px !important;
    margin-left: auto !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .app-more,
  body:not(.article-page-mode):not(:has(.article-reader.open)) .app-header > button:last-child {
    position: relative !important;
    inset: auto !important;
    z-index: 3 !important;
    flex: 0 0 40px !important;
    width: 40px !important;
    height: 40px !important;
    margin: 0 !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-tabs {
    position: relative !important;
    top: auto !important;
    bottom: auto !important;
    left: auto !important;
    right: auto !important;
    width: 100% !important;
    min-height: 64px !important;
    margin: 0 !important;
    padding: 10px 14px !important;
    transform: none !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-feed {
    width: 100% !important;
    margin: 0 !important;
    padding: 12px 14px 92px !important;
    transform: none !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-article-list {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 14px !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-article {
    display: grid !important;
    grid-template-columns: 132px minmax(0, 1fr) !important;
    gap: 14px !important;
    min-height: 132px !important;
    margin: 0 !important;
    padding: 14px !important;
    overflow: hidden !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-article-cover {
    width: 132px !important;
    min-width: 132px !important;
    height: auto !important;
    aspect-ratio: 800 / 347 !important;
    margin: 0 !important;
    border-radius: 12px !important;
    overflow: hidden !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-article-info {
    min-width: 0 !important;
    padding: 0 !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-article-info h2 {
    margin: 0 0 9px !important;
    font-size: 16px !important;
    line-height: 1.45 !important;
    display: -webkit-box !important;
    overflow: hidden !important;
    -webkit-box-orient: vertical !important;
    -webkit-line-clamp: 2 !important;
    word-break: break-word !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-article-meta {
    display: flex !important;
    flex-wrap: wrap !important;
    align-items: center !important;
    gap: 6px 8px !important;
    min-width: 0 !important;
    overflow: visible !important;
    white-space: normal !important;
    font-size: 12px !important;
    line-height: 1.45 !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-article-category {
    max-width: 100% !important;
    overflow: hidden !important;
    white-space: nowrap !important;
    text-overflow: ellipsis !important;
  }

  body:not(.article-page-mode):not(:has(.article-reader.open)) .column-page-disclaimer {
    width: calc(100% - 28px) !important;
    margin: 8px auto 86px !important;
  }

  body:has(.article-reader.open) {
    padding: 0 !important;
    background: #f6f9fb !important;
  }

  body:has(.article-reader.open) > .app-header,
  body:has(.article-reader.open) > .column-tabs,
  body:has(.article-reader.open) > .column-feed,
  body:has(.article-reader.open) > .bottom-nav,
  body:has(.article-reader.open) > .column-page-disclaimer,
  body:has(.article-reader.open) > .desktop-back-top,
  body:has(.article-reader.open) > .app-search-bar {
    display: none !important;
  }

  body:has(.article-reader.open) .article-reader.open {
    position: static !important;
    inset: auto !important;
    display: block !important;
    width: 100% !important;
    min-height: 100vh !important;
    padding: 0 !important;
    overflow: visible !important;
    background: #f6f9fb !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: none !important;
  }

  body:has(.article-reader.open) .article-reader.open > article {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 100vh !important;
    margin: 0 !important;
    padding: 28px 16px 46px !important;
    border-radius: 0 !important;
    overflow: hidden !important;
    background: #fff !important;
    box-shadow: none !important;
  }

  body:has(.article-reader.open) .reader-close {
    display: none !important;
  }
}

.column-page-disclaimer {
  width: calc(100% - 48px);
  margin: 34px auto 24px;
  padding: 18px 24px;
  border-top: 1px solid rgba(18, 101, 155, .14);
  color: #71817a;
  font-size: 13px;
  line-height: 1.7;
  text-align: center;
}

@media (max-width: 768px) {
  .column-page-disclaimer {
    width: calc(100% - 28px);
    margin-bottom: 84px;
    padding: 14px 8px;
    font-size: 12px;
  }
}

@media (min-width: 1280px) {
  .column-article-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .column-article-cover {
    width: 220px !important;
    min-width: 220px;
    height: 120px !important;
  }

  .column-article {
    grid-template-columns: 220px minmax(0, 1fr);
    min-height: 152px;
  }
}

/* Preserve the complete uploaded cover inside every article card. */
.column-article-cover {
  display: grid !important;
  place-items: center !important;
  background: #eef5f3 !important;
}

.column-article-cover img {
  display: block !important;
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: contain !important;
  object-position: center !important;
}

/* Responsive article and column safeguards, 2026-09-21. */
.article-reader,
.article-reader * {
  box-sizing: border-box;
}

.article-reader img,
.reader-body img,
#reader-body img,
.a135 img {
  max-width: 100% !important;
  height: auto !important;
  object-fit: contain !important;
}

body.article-page-mode .reader-body,
body.article-page-mode #reader-body,
body.article-page-mode .a135 {
  width: 100% !important;
  max-width: 100% !important;
  overflow: visible !important;
  color: #183b59;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

body.article-page-mode .a135-figure,
body.article-page-mode .a135-cover {
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  overflow: hidden !important;
}

body.article-page-mode .a135-expert {
  width: 100% !important;
  max-width: 100% !important;
  min-height: 0 !important;
  grid-template-columns: 112px minmax(0, 1fr) !important;
  column-gap: 30px !important;
  padding: 56px 30px 30px !important;
  overflow: hidden !important;
}

body.article-page-mode .a135-expert-avatar,
body.article-page-mode .a135-expert-avatar img {
  width: 112px !important;
  min-width: 112px !important;
  max-width: 112px !important;
  height: 112px !important;
  aspect-ratio: 1 / 1 !important;
  object-fit: contain !important;
}

body.article-page-mode .a135-expert-info,
body.article-page-mode .a135-expert-name,
body.article-page-mode .a135-expert-department,
body.article-page-mode .a135-expert-title,
body.article-page-mode .a135-expert-hospital {
  min-width: 0 !important;
  max-width: 100% !important;
  white-space: normal !important;
  word-break: break-word !important;
  overflow-wrap: anywhere !important;
  writing-mode: horizontal-tb !important;
}

@media (max-width: 768px) {
  body:not(.article-page-mode) .app-header {
    display: grid !important;
    grid-template-columns: minmax(92px, auto) 1fr auto auto !important;
    align-items: center !important;
    gap: 10px !important;
    width: 100% !important;
    min-height: 58px !important;
    padding: 10px 14px !important;
  }

  body:not(.article-page-mode) .app-back {
    position: static !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    width: auto !important;
    min-width: 92px !important;
    max-width: none !important;
    height: 38px !important;
    padding: 0 !important;
    margin: 0 !important;
    white-space: nowrap !important;
    word-break: keep-all !important;
    writing-mode: horizontal-tb !important;
    line-height: 38px !important;
    font-size: 14px !important;
  }

  body:not(.article-page-mode) .app-header h1 {
    min-width: 0 !important;
    margin: 0 !important;
    text-align: center !important;
    white-space: nowrap !important;
    font-size: 19px !important;
  }

  .column-tabs {
    position: relative !important;
    z-index: 5 !important;
    display: flex !important;
    width: 100% !important;
    padding: 10px 14px !important;
    gap: 10px !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    white-space: nowrap !important;
    scrollbar-width: none;
  }

  .column-tabs::-webkit-scrollbar {
    display: none;
  }

  .column-tabs button {
    flex: 0 0 auto !important;
    white-space: nowrap !important;
  }

  .column-feed,
  .column-article-list,
  .column-article {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
  }

  body.article-page-mode .article-reader > article {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 100vh;
    padding: 28px 16px 44px !important;
    overflow: hidden !important;
  }

  body.article-page-mode .article-reader h1,
  body.article-page-mode #reader-title {
    max-width: 100% !important;
    font-size: clamp(24px, 7vw, 34px) !important;
    line-height: 1.35 !important;
    word-break: break-word !important;
    overflow-wrap: anywhere !important;
  }

  body.article-page-mode .reader-body,
  body.article-page-mode #reader-body {
    font-size: 16px !important;
    line-height: 1.85 !important;
  }

  body.article-page-mode .a135-figure {
    margin: 22px auto 30px !important;
    padding: 10px !important;
  }

  body.article-page-mode .a135-expert {
    display: grid !important;
    width: 100% !important;
    min-width: 0 !important;
    grid-template-columns: 92px minmax(0, 1fr) !important;
    column-gap: 20px !important;
    align-items: center !important;
    padding: 50px 18px 24px !important;
  }

  body.article-page-mode .a135-expert-avatar,
  body.article-page-mode .a135-expert-avatar img {
    width: 92px !important;
    min-width: 92px !important;
    max-width: 92px !important;
    height: 92px !important;
  }

  body.article-page-mode .a135-expert-avatar::before {
    right: -9px !important;
  }

  body.article-page-mode .a135-expert-info {
    display: grid !important;
    align-content: center !important;
    gap: 5px !important;
    width: 100% !important;
    min-width: 0 !important;
    padding-left: 8px !important;
    writing-mode: horizontal-tb !important;
  }

  body.article-page-mode .a135-expert-name {
    display: block !important;
    width: 100% !important;
    margin: 0 0 3px !important;
    font-size: 16px !important;
    line-height: 1.5 !important;
    white-space: nowrap !important;
    word-break: keep-all !important;
    writing-mode: horizontal-tb !important;
  }

  body.article-page-mode .a135-expert-department,
  body.article-page-mode .a135-expert-title,
  body.article-page-mode .a135-expert-hospital {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    font-size: clamp(12px, 3.4vw, 14px) !important;
    line-height: 1.6 !important;
    white-space: normal !important;
    word-break: keep-all !important;
    overflow-wrap: normal !important;
    writing-mode: horizontal-tb !important;
  }

  body.article-page-mode .column-page-disclaimer,
  body.article-page-mode .bottom-nav,
  body.article-page-mode .desktop-back-top {
    display: none !important;
  }
}