.research-page {
  --article-container: 1720px;
  --article-gutter: clamp(48px, 6vw, 120px);
  background:
    radial-gradient(circle at 10% 0%, rgba(222, 239, 255, 0.9) 0, rgba(222, 239, 255, 0) 34%),
    linear-gradient(180deg, #f8fbff 0%, #ffffff 38%, #f7fbff 100%);
}

.research-page main .container,
.research-page .site-footer .container {
  width: min(100% - var(--article-gutter), var(--article-container));
}

.research-page .site-header {
  position: sticky;
  top: 0;
  z-index: 80;
}

.research-page .site-header .nav-shell {
  width: calc(100% - clamp(32px, 3.4vw, 56px));
  max-width: none;
  min-height: 82px;
  gap: clamp(24px, 3vw, 52px);
}

.research-page .brand img {
  width: 150px;
}

.research-page .primary-nav {
  gap: clamp(26px, 2.5vw, 46px);
  color: #27354a;
  font-size: 15px;
  font-weight: 500;
}

.research-page .round-action {
  width: 40px;
  height: 40px;
}

.research-main {
  padding: 8px 0 18px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 56px;
  align-items: start;
}

.article-card {
  min-width: 0;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-items: center;
  margin-bottom: 18px;
  color: #7c8ca4;
  font-size: 13px;
}

.breadcrumbs a {
  color: var(--primary-dark);
  font-weight: 600;
}

.breadcrumbs a::after {
  margin-left: 9px;
  color: #9aabc0;
  font-weight: 400;
  content: ">";
}

.article-head {
  position: relative;
  padding-right: 70px;
}

.article-tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 13px;
  border-radius: 999px;
  background: #e8f8ef;
  color: #177855;
  font-size: 12px;
  font-weight: 800;
}

.share-mini {
  position: absolute;
  top: 6px;
  right: 0;
  color: #7586a0;
  font-size: 12px;
}

.article-head h1 {
  max-width: 650px;
  margin: 14px 0 9px;
  color: #10213d;
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: 0;
  font-weight: 800;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 15px;
  color: #687b94;
  font-size: 12px;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.article-meta img {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
}

.article-cover,
.article-inline-image {
  width: 100%;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}

.article-cover {
  aspect-ratio: 586 / 160;
}

.article-content-card {
  margin: 20px 0 18px;
  padding: clamp(24px, 3vw, 42px);
  border: 1px solid #e2ebf6;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(39, 91, 148, 0.1);
}

.article-rich-content {
  overflow-wrap: anywhere;
  color: #354861;
  font-size: 15px;
  line-height: 1.9;
}

.article-rich-content > :first-child {
  margin-top: 0;
}

.article-rich-content > :last-child {
  margin-bottom: 0;
}

.article-rich-content h2,
.article-rich-content h3 {
  color: #17365f;
  line-height: 1.45;
  font-weight: 800;
}

.article-rich-content h2 {
  margin: 30px 0 14px;
  padding-left: 14px;
  border-left: 5px solid var(--primary);
  font-size: 22px;
}

.article-rich-content h3 {
  margin: 24px 0 12px;
  font-size: 18px;
}

.article-rich-content p {
  margin: 0 0 16px;
}

.article-rich-content ul,
.article-rich-content ol {
  margin: 0 0 18px;
  padding-left: 28px;
}

.article-rich-content li + li {
  margin-top: 7px;
}

.article-rich-content blockquote {
  margin: 22px 0;
  padding: 16px 20px;
  border-left: 4px solid #76aff1;
  border-radius: 0 8px 8px 0;
  background: #f3f8ff;
  color: #53677f;
}

.article-rich-content img {
  display: block;
  width: min(78%, 760px);
  max-width: 100%;
  max-height: min(70vh, 560px);
  height: auto;
  margin: 24px auto;
  object-fit: contain;
  border-radius: 10px;
  background: #f7faff;
  box-shadow: var(--shadow-sm);
}

.lead-box {
  margin: 18px 0 22px;
  padding: 16px 22px;
  border: 1px solid #e8f0fb;
  border-radius: 8px;
  background: linear-gradient(135deg, #f1f7ff, #f8fbff);
  color: #53657d;
  font-size: 13px;
  line-height: 1.75;
}

.article-section {
  margin: 0 0 15px;
}

.article-section h2 {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 7px;
  color: #18335d;
  font-size: 16px;
  line-height: 1.35;
  font-weight: 800;
}

.article-section h2::before {
  display: inline-block;
  flex: 0 0 auto;
  width: 5px;
  height: 20px;
  border-radius: 999px;
  background: var(--primary);
  content: "";
}

.article-section p {
  margin: 0 0 6px;
  color: #3f5068;
  font-size: 12.5px;
  line-height: 1.62;
}

.article-inline-image {
  aspect-ratio: 524 / 102;
  width: min(100% - 62px, 524px);
  margin: 10px 0 1px 18px;
}

.comments-card {
  padding: 12px 18px 12px;
  border: 1px solid #e7f0fb;
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.comments-card h2 {
  margin: 0 0 10px;
  color: #14284a;
  font-size: 14px;
}

.comment-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 72px;
  gap: 10px;
  margin-bottom: 9px;
}

.comment-form input {
  min-width: 0;
  min-height: 30px;
  padding: 0 14px;
  border: 1px solid #e1ebf7;
  border-radius: 6px;
  color: var(--text);
  font: inherit;
  font-size: 12px;
}

.comment-form input::placeholder {
  color: #a4b1c2;
}

.comment-form button {
  min-height: 30px;
  border: 0;
  border-radius: 6px;
  background: linear-gradient(135deg, #3b94ff, #1f73e8);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  box-shadow: 0 10px 20px rgba(47, 128, 237, 0.22);
}

.comment-list {
  display: grid;
  gap: 6px;
}

.comment-item {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) 20px;
  gap: 9px;
  align-items: start;
}

.comment-item > img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

.comment-item h3 {
  margin: 0 0 2px;
  color: #1f3558;
  font-size: 11.5px;
}

.comment-item p {
  margin: 0 0 2px;
  color: #53657d;
  font-size: 10.5px;
  line-height: 1.36;
}

.comment-item span {
  color: #9aa8ba;
  font-size: 10px;
}

.comment-item button {
  width: 20px;
  height: 20px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: #9aa8ba;
}

.more-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 6px;
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 800;
}

.comments-card .more-link {
  width: 100%;
}

.article-sidebar {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.side-card {
  padding: 22px 20px;
  border: 1px solid #e7f0fb;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
}

.side-card h2 {
  margin: 0 0 18px;
  color: #1c3152;
  font-size: 15px;
  font-weight: 800;
}

.author-card {
  text-align: center;
}

.author-card > img {
  width: 50px;
  height: 50px;
  margin: 4px auto 10px;
  border-radius: 12px;
  object-fit: cover;
}

.author-card h3 {
  margin: 0 0 12px;
  color: #1a3154;
  font-size: 16px;
}

.author-card p {
  margin: 0 auto 20px;
  max-width: 210px;
  color: #5c6c82;
  font-size: 12px;
  line-height: 1.75;
}

.author-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 188px;
  min-height: 32px;
  border: 1px solid var(--primary-dark);
  border-radius: 999px;
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 800;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

.author-card a:hover {
  background: var(--primary-dark);
  color: #fff;
}

.related-card {
  padding-bottom: 20px;
}

.related-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.related-item--text-only {
  grid-template-columns: minmax(0, 1fr);
}

.related-item img {
  width: 72px;
  height: 64px;
  border-radius: 8px;
  object-fit: cover;
}

.related-item strong {
  display: block;
  color: #203553;
  font-size: 12px;
  line-height: 1.45;
  font-weight: 800;
}

.related-item em {
  display: block;
  margin-top: 5px;
  color: #8d9caf;
  font-size: 11px;
  font-style: normal;
}

.related-card .more-link {
  margin: 4px 0 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 8px;
  background: #eef6ff;
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 800;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.research-page .footer-grid {
  gap: 24px;
  padding: 22px 0 14px;
}

.research-page .footer-brand img {
  width: 118px;
  margin-bottom: 8px;
}

.research-page .footer-brand p {
  margin-bottom: 10px;
  font-size: 12px;
}

.research-page .social-links a {
  width: 24px;
  height: 24px;
}

.research-page .site-footer nav h2 {
  margin-bottom: 7px;
  font-size: 13px;
}

.research-page .site-footer nav a {
  font-size: 11px;
  line-height: 1.6;
}

.research-page .qr-block {
  grid-template-columns: 72px minmax(0, 1fr);
}

.research-page .qr-block img {
  width: 72px;
  height: 72px;
}

.research-page .qr-block strong {
  font-size: 13px;
}

.research-page .qr-block span {
  font-size: 12px;
}

.research-page .copyright {
  padding: 8px 24px 10px;
  font-size: 11px;
}

@media (max-width: 980px) {
  .research-main {
    padding-top: 24px;
  }

  .article-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .article-sidebar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .article-rich-content img {
    width: min(88%, 720px);
  }

  .author-card a {
    width: 100%;
  }
}

@media (min-width: 761px) and (max-width: 980px) {
  .research-page .site-header .nav-shell {
    flex-wrap: nowrap;
    gap: 22px;
    min-height: 70px;
    padding: 0;
  }

  .research-page .brand img {
    width: 118px;
  }

  .research-page .primary-nav {
    order: initial;
    justify-content: center;
    width: auto;
    gap: 24px;
    overflow: visible;
    font-size: 15px;
  }

  .research-page .round-action {
    margin-left: 0;
  }
}

@media (max-width: 760px) {
  .research-page {
    --article-gutter: 28px;
  }

  .research-page .site-header .nav-shell {
    min-height: 70px;
  }

  .research-page .brand img {
    width: 118px;
  }

  .research-page .primary-nav {
    gap: 18px;
    overflow-x: auto;
    font-size: 15px;
    scrollbar-width: none;
  }

  .research-page .primary-nav::-webkit-scrollbar {
    display: none;
  }

  .article-head {
    padding-right: 0;
  }

  .share-mini {
    position: static;
    margin-top: 12px;
  }

  .article-head h1 {
    font-size: 29px;
  }

  .article-sidebar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .research-main {
    padding: 18px 0 34px;
  }

  .breadcrumbs {
    margin-bottom: 20px;
  }

  .article-head h1 {
    margin-top: 18px;
    font-size: 24px;
  }

  .article-content-card {
    margin-top: 16px;
    padding: 22px 18px;
  }

  .article-rich-content {
    font-size: 16px;
    line-height: 1.8;
  }

  .article-rich-content h2 {
    margin-top: 26px;
    font-size: 20px;
  }

  .article-rich-content img {
    width: 100%;
    max-height: 70vh;
    margin: 20px auto;
    border-radius: 8px;
  }

  .article-meta {
    gap: 10px 14px;
  }

  .lead-box,
  .comments-card,
  .side-card {
    padding: 16px;
  }

  .article-section h2 {
    font-size: 17px;
  }

  .article-section p,
  .lead-box {
    font-size: 13px;
  }

  .article-inline-image {
    width: 100%;
    margin-left: 0;
  }

  .comment-form {
    grid-template-columns: 1fr;
  }

  .comment-item {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .comment-item button {
    grid-column: 2;
    justify-self: start;
  }
}