.article-page-shell {
  padding: 0 0 60px;
  background: linear-gradient(180deg, #eef4ff 0, #f7faff 240px, #f6f9ff 100%);
}

.article-state {
  max-width: 1200px;
  margin: 0 auto 18px;
  padding: 18px 20px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  color: #475569;
  font-family: "Poppins", sans-serif;
}

.article-state.error {
  color: #b91c1c;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(280px, 1.2fr);
  gap: 18px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  font-family: "Poppins", sans-serif;
  align-items: start;
  overflow: visible;
}

.article-layout,
.article-main,
.article-sidebar {
  overflow: visible;
}

.article-main {
  background: #ffffff;
  padding: 28px;
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.article-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 14px;
  color: #64748b;
}

.article-breadcrumb a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
}

.article-breadcrumb a + a::before {
  content: "/";
  margin-right: 8px;
  color: #94a3b8;
}

.article-label-row {
  margin-bottom: 12px;
}

.article-primary-label {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border-radius: 999px;
  background: #eef2ff;
  color: #2563eb;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-decoration: none;
}

.article-primary-label:hover {
  background: #dbe5ff;
}

.article-title {
  font-size: 30px;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 10px;
  line-height: 1.2;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: #64748b;
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 14px;
  margin-bottom: 22px;
}

.article-img {
  width: 100%;
  max-height: 440px;
  object-fit: cover;
  border-radius: 16px;
  margin: 20px 0;
  display: block;
}

.article-video-box {
  margin: 20px 0;
}

.article-text {
  font-size: 16px;
  line-height: 1.9;
  color: #334155;
}

.article-text p,
.article-text ul,
.article-text ol,
.article-text blockquote,
.article-text div {
  margin-bottom: 18px;
}

.article-text ul,
.article-text ol {
  padding-left: 24px;
}

.article-text img,
.article-text iframe,
.article-text video {
  max-width: 100%;
  height: auto;
  border-radius: 14px;
}

.article-text a {
  color: #2563eb;
}

.article-print-viewer {
  margin: 26px 0;
  padding: 18px;
  border: 1px solid #d8e5fb;
  border-radius: 22px;
  background: linear-gradient(180deg, #fbfdff 0%, #f2f7ff 100%);
  box-shadow: 0 16px 34px rgba(37, 99, 235, 0.08);
}

.article-text .article-print-viewer,
.article-text .article-print-viewer div,
.article-text .article-print-viewer section,
.article-text .article-print-viewer span,
.article-text .article-print-viewer canvas,
.article-text .article-print-viewer iframe {
  margin-bottom: 0;
}

.article-print-viewer-head,
.article-print-viewer-foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.article-print-viewer-head {
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.article-print-viewer-heading {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.article-print-viewer-head strong {
  font-size: 17px;
  color: #0f172a;
}

.article-print-viewer-heading span,
.article-print-viewer-foot span {
  font-size: 13px;
  color: #64748b;
}

.article-print-fullscreen-btn {
  border: 1px solid #c8d8f8;
  border-radius: 999px;
  background: #ffffff;
  color: #1d4ed8;
  min-height: 42px;
  padding: 0 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.article-print-fullscreen-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 16px 26px rgba(37, 99, 235, 0.16);
}

.article-print-fullscreen-btn:disabled {
  opacity: 0.65;
  cursor: wait;
}

.article-print-stage {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
}

.article-print-stage-embed {
  grid-template-columns: minmax(0, 1fr);
}

.article-print-screen {
  position: relative;
  min-height: 280px;
  display: grid;
  place-items: center;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid #d7e2f6;
  background: #ffffff;
  overflow: hidden;
}

.article-print-screen canvas {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.1);
}

.article-print-screen iframe {
  width: 100%;
  min-height: 560px;
  border: none;
  border-radius: 12px;
  background: #fff;
}

.article-print-loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.82);
  color: #2563eb;
  font-weight: 700;
  text-align: center;
}

.article-print-loading[hidden] {
  display: none;
}

.article-print-viewer.is-fullscreen,
.article-print-viewer:fullscreen,
.article-print-viewer:-webkit-full-screen {
  width: 100%;
  height: 100%;
  max-width: none;
  margin: 0;
  padding: 18px 20px 16px;
  border: none;
  border-radius: 0;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at top left, rgba(96, 165, 250, 0.18), transparent 28%),
    linear-gradient(180deg, #081120 0%, #0f172a 100%);
  box-shadow: none;
}

.article-print-viewer.is-fullscreen .article-print-viewer-head,
.article-print-viewer.is-fullscreen .article-print-viewer-foot,
.article-print-viewer:fullscreen .article-print-viewer-head,
.article-print-viewer:fullscreen .article-print-viewer-foot,
.article-print-viewer:-webkit-full-screen .article-print-viewer-head,
.article-print-viewer:-webkit-full-screen .article-print-viewer-foot {
  flex-shrink: 0;
}

.article-print-viewer.is-fullscreen .article-print-viewer-head strong,
.article-print-viewer:fullscreen .article-print-viewer-head strong,
.article-print-viewer:-webkit-full-screen .article-print-viewer-head strong {
  color: #f8fafc;
}

.article-print-viewer.is-fullscreen .article-print-viewer-heading span,
.article-print-viewer.is-fullscreen .article-print-viewer-foot span,
.article-print-viewer:fullscreen .article-print-viewer-heading span,
.article-print-viewer:fullscreen .article-print-viewer-foot span,
.article-print-viewer:-webkit-full-screen .article-print-viewer-heading span,
.article-print-viewer:-webkit-full-screen .article-print-viewer-foot span {
  color: #bfdbfe;
}

.article-print-viewer.is-fullscreen .article-print-fullscreen-btn,
.article-print-viewer:fullscreen .article-print-fullscreen-btn,
.article-print-viewer:-webkit-full-screen .article-print-fullscreen-btn {
  border-color: rgba(191, 219, 254, 0.3);
  background: rgba(15, 23, 42, 0.45);
  color: #eff6ff;
  box-shadow: none;
}

.article-print-viewer.is-fullscreen .article-print-stage,
.article-print-viewer:fullscreen .article-print-stage,
.article-print-viewer:-webkit-full-screen .article-print-stage {
  flex: 1;
  min-height: 0;
}

.article-print-viewer.is-fullscreen .article-print-screen,
.article-print-viewer:fullscreen .article-print-screen,
.article-print-viewer:-webkit-full-screen .article-print-screen {
  height: 100%;
  min-height: 0;
  padding: 16px;
  border-color: rgba(191, 219, 254, 0.22);
  background: rgba(255, 255, 255, 0.04);
}

.article-print-viewer.is-fullscreen .article-print-screen canvas,
.article-print-viewer:fullscreen .article-print-screen canvas,
.article-print-viewer:-webkit-full-screen .article-print-screen canvas {
  max-height: calc(100vh - 210px);
}

.article-print-viewer.is-fullscreen .article-print-screen iframe,
.article-print-viewer:fullscreen .article-print-screen iframe,
.article-print-viewer:-webkit-full-screen .article-print-screen iframe {
  height: 100%;
  min-height: calc(100vh - 210px);
  border-radius: 16px;
}

.article-print-viewer.is-fullscreen .article-print-nav,
.article-print-viewer:fullscreen .article-print-nav,
.article-print-viewer:-webkit-full-screen .article-print-nav {
  border-color: rgba(191, 219, 254, 0.28);
  background: rgba(255, 255, 255, 0.08);
  color: #eff6ff;
  box-shadow: none;
}

.article-print-viewer.is-fullscreen .article-print-loading,
.article-print-viewer:fullscreen .article-print-loading,
.article-print-viewer:-webkit-full-screen .article-print-loading {
  background: rgba(8, 17, 32, 0.72);
  color: #dbeafe;
}

.article-print-nav {
  width: 44px;
  height: 44px;
  border: 1px solid #c8d8f8;
  border-radius: 999px;
  background: #fff;
  color: #1d4ed8;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.article-print-nav:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 16px 26px rgba(37, 99, 235, 0.16);
}

.article-print-nav:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.article-print-missing {
  margin: 22px 0;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px dashed #cbd7ee;
  background: #f8fbff;
  color: #64748b;
  font-size: 14px;
  font-weight: 600;
}

.related-articles {
  margin-top: 36px;
}

.related-articles h3 {
  font-size: 20px;
  margin-bottom: 15px;
  border-left: 4px solid #007bff;
  padding-left: 10px;
  color: #1e293b;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.related-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: #ffffff;
  border: 1px solid #e3ebf8;
  border-radius: 18px;
  text-decoration: none;
  color: #0f172a;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.07);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 34px rgba(37, 99, 235, 0.12);
}

.related-card-media {
  display: block;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: linear-gradient(180deg, #edf3ff 0%, #f7faff 100%);
}

.related-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.related-card-body {
  display: grid;
  gap: 8px;
  padding: 14px;
}

.related-card-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #2563eb;
}

.related-card p {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: #10203f;
}

.related-card-placeholder {
  pointer-events: none;
  box-shadow: none;
  border-style: dashed;
  background: linear-gradient(180deg, #fafcff 0%, #f5f8fe 100%);
}

.related-card-placeholder-media {
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(37, 99, 235, 0.02)),
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 52%);
}

.related-card-placeholder .related-card-kicker,
.related-card-placeholder p {
  color: #64748b;
}

.article-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
  max-height: none;
  align-self: start;
  overflow: visible;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.sidebar-box {
  background: #ffffff;
  padding: 18px;
  border-radius: 16px;
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.06);
  transition: transform 0.3s ease;
}

.sidebar-box:hover {
  transform: translateY(-3px);
}

.sidebar-box h4 {
  font-size: 16px;
  margin-bottom: 15px;
  font-weight: 600;
  border-left: 4px solid #28a745;
  padding-left: 8px;
  color: #1e293b;
}

.ad-box {
  background: #f5f7fa;
  padding: 25px;
  text-align: center;
  border-radius: 10px;
  font-size: 14px;
  border: 1px dashed #d6dbe5;
}

.side-link {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  font-size: 14px;
  color: #334155;
  border-bottom: 1px solid #edf2f7;
  text-decoration: none;
  transition: color 0.2s ease;
}

.side-link:last-child {
  border-bottom: none;
}

.side-link:hover {
  color: #1d4ed8;
}

.side-link span:last-child {
  color: #64748b;
}

.side-post {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
  text-decoration: none;
  color: #334155;
}

.side-post:last-child {
  margin-bottom: 0;
}

.side-post img {
  width: 65px;
  height: 55px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
}

.side-post span {
  display: block;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
}

.side-post small {
  display: block;
  font-size: 12px;
  color: #777;
}

.tag-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-wrap a,
.tag-wrap span {
  display: inline-flex;
  align-items: center;
  background: #eef2ff;
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 30px;
  text-decoration: none;
  color: #2563eb;
  transition: 0.3s;
}

.tag-wrap a:hover {
  background: #2563eb;
  color: #fff;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f0f2f5;
  border-radius: 50%;
  color: #007bff;
  transition: 0.3s;
  text-decoration: none;
}

.social-links a:hover {
  background: #007bff;
  color: #fff;
}

.article-share-links {
  flex-wrap: wrap;
}

.article-author-box {
  margin-top: 36px;
}

.article-author-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.article-author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1d4ed8, #0f172a);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
}

.article-author-copy strong {
  display: block;
  margin-bottom: 6px;
  color: #0f172a;
  font-size: 16px;
}

.article-author-copy p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
}

.article-empty-side {
  margin: 0;
  font-size: 14px;
  color: #64748b;
  line-height: 1.6;
}

.category-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.category-layout-head {
  background: #ffffff;
  border-radius: 18px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  padding: 22px;
  margin-bottom: 16px;
}

.category-layout-head h2 {
  margin: 0 0 8px;
  color: #0f172a;
}

.category-layout-head p {
  margin: 0;
  color: #475569;
}

.category-layout-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.category-article-card {
  background: #fff;
  border: 1px solid #e4ebf7;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.07);
}

.category-article-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.category-article-card img {
  width: 100%;
  height: 170px;
  object-fit: cover;
}

.category-article-copy {
  padding: 14px;
}

.category-article-copy h3 {
  margin: 0 0 10px;
  font-size: 18px;
  color: #0f172a;
}

.category-article-copy p {
  margin: 0 0 10px;
  font-size: 14px;
  color: #475569;
  line-height: 1.6;
}

.category-article-copy small {
  color: #64748b;
}

#backToTop {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 50%;
  background: #111827;
  color: #fff;
  cursor: pointer;
  z-index: 9999;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: 0.25s;
}

#backToTop.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#backToTop:hover {
  transform: translateY(-3px);
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-print-viewer-head {
    align-items: stretch;
  }

  .article-print-fullscreen-btn {
    width: 100%;
  }

  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-sidebar {
    position: relative;
    top: 0;
  }

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

  .article-print-nav {
    width: 100%;
    height: 40px;
    border-radius: 12px;
  }

  .article-title {
      font-size: 25px;
    }
  }

@media (max-width: 500px) {
  .article-page-shell {
    padding-top: 0;
  }

  .article-main {
    padding: 20px;
  }

  .article-meta {
    flex-direction: column;
    gap: 6px;
  }

  .article-text {
    font-size: 15px;
  }

  .article-author-row {
      flex-direction: column;
    }

  .article-title {
      font-size: 22px;
    }

  .article-print-fullscreen-btn {
    min-height: 40px;
    padding: 0 12px;
  }

  .article-print-viewer {
    padding: 14px;
  }

  .article-print-screen {
    min-height: 220px;
    padding: 10px;
  }

  .article-print-screen iframe {
    min-height: 420px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}