.tu-article-main {
  --tu-article-blue: #062b61;
  --tu-article-gold: #f2b544;
  --tu-article-text: #26354b;
  --tu-article-muted: #657187;
  background: #f6f8fb;
  color: var(--tu-article-text);
  overflow-wrap: anywhere;
  padding: 42px 16px 64px;
}

.tu-article-main .tu-article { max-width: 1180px; margin: 0 auto; }
.tu-article-main .tu-breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; color: var(--tu-article-muted); font-size: 14px; }
.tu-article-main .tu-breadcrumb a { color: var(--tu-article-blue); text-decoration: none; }
.tu-article-main .tu-breadcrumb a:hover, .tu-article-main .tu-breadcrumb a:focus-visible { color: #9b6500; text-decoration: underline; }
.tu-article-main .tu-article-header { max-width: 900px; margin-bottom: 30px; }
.tu-article-main .tu-article-category { margin: 0 0 8px; color: #9b6500; font-size: 14px; font-weight: 700; letter-spacing: .08em; }
.tu-article-main .tu-article-header h1 { margin: 0; color: var(--tu-article-blue); font-size: clamp(32px, 5vw, 52px); line-height: 1.2; }
.tu-article-main .tu-article-description { margin: 18px 0; color: #4d5c71; font-size: 19px; line-height: 1.8; }
.tu-article-main .tu-article-meta { display: flex; flex-wrap: wrap; gap: 8px 22px; color: var(--tu-article-muted); font-size: 14px; }
.tu-article-main .tu-article-hero { margin: 0 0 36px; overflow: hidden; border-radius: 14px; background: #e7ebf2; }
.tu-article-main .tu-article-hero img { display: block; width: 100%; height: auto; aspect-ratio: 1200 / 630; object-fit: cover; }
.tu-article-main .tu-article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; align-items: start; gap: 42px; }
.tu-article-main .tu-article-content { min-width: 0; border-radius: 12px; padding: clamp(22px, 4vw, 44px); background: #fff; box-shadow: 0 10px 30px rgba(6,43,97,.07); font-size: 17px; line-height: 1.9; }
.tu-article-main .tu-article-content h2, .tu-article-main .tu-article-content h3 { scroll-margin-top: 100px; color: var(--tu-article-blue); line-height: 1.35; }
.tu-article-main .tu-article-content h2 { margin: 42px 0 14px; border-bottom: 2px solid rgba(242,181,68,.55); padding-bottom: 10px; font-size: 30px; }
.tu-article-main .tu-article-content h3 { margin: 30px 0 10px; font-size: 23px; }
.tu-article-main .tu-article-content > :first-child { margin-top: 0; }
.tu-article-main .tu-article-content img { max-width: 100%; height: auto; border-radius: 8px; }
.tu-article-main .tu-article-content table { width: 100%; min-width: 640px; border-collapse: collapse; }
.tu-article-main .tu-article-content table:is(:not([class])) { display: block; max-width: 100%; overflow-x: auto; }
.tu-article-main .tu-article-content th, .tu-article-main .tu-article-content td { border: 1px solid #d9e0ea; padding: 10px 12px; text-align: left; }
.tu-article-main .tu-article-content blockquote { margin: 24px 0; border-left: 4px solid var(--tu-article-gold); padding: 14px 20px; background: #f7f8fb; color: #46556a; }
.tu-article-main .tu-article-content details { margin: 14px 0; border: 1px solid #d9e0ea; border-radius: 8px; padding: 0 16px; }
.tu-article-main .tu-article-content summary { cursor: pointer; padding: 15px 0; color: var(--tu-article-blue); font-weight: 700; }
.tu-article-main .tu-article-sidebar { position: sticky; top: 100px; }
.tu-article-main .tu-article-toc { border-top: 4px solid var(--tu-article-gold); border-radius: 8px; padding: 20px; background: #fff; box-shadow: 0 8px 24px rgba(6,43,97,.07); }
.tu-article-main .tu-article-toc__title { margin: 0 0 12px; color: var(--tu-article-blue); font-weight: 700; }
.tu-article-main .tu-article-toc ol { margin: 0; padding-left: 20px; }
.tu-article-main .tu-article-toc li { margin: 8px 0; }
.tu-article-main .tu-article-toc li ol { font-size: 14px; }
.tu-article-main .tu-article-toc a { color: #40516a; text-decoration: none; }
.tu-article-main .tu-article-toc a:hover, .tu-article-main .tu-article-toc a:focus-visible { color: #9b6500; text-decoration: underline; }
.tu-article-main .tu-related-articles { margin-top: 48px; }
.tu-article-main .tu-related-articles > h2 { color: var(--tu-article-blue); }
.tu-article-main .tu-related-articles__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.tu-article-main .tu-article-card { overflow: hidden; border: 1px solid #dbe2ec; border-radius: 10px; background: #fff; }
.tu-article-main .tu-article-card__link { display: block; height: 100%; color: inherit; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease; }
.tu-article-main .tu-article-card__link:hover, .tu-article-main .tu-article-card__link:focus-visible { box-shadow: 0 10px 25px rgba(6,43,97,.15); transform: translateY(-3px); }
.tu-article-main .tu-article-card__image { display: block; width: 100%; height: auto; aspect-ratio: 600 / 315; object-fit: cover; }
.tu-article-main .tu-article-card__body { padding: 16px; }
.tu-article-main .tu-article-card__category { margin: 0; color: #9b6500; font-size: 13px; font-weight: 700; }
.tu-article-main .tu-article-card__title { margin: 7px 0; color: var(--tu-article-blue); font-size: 18px; line-height: 1.45; }
.tu-article-main .tu-article-card__description { margin: 0 0 10px; color: #56657a; font-size: 14px; line-height: 1.65; }
.tu-article-main .tu-prev-next { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 38px; }
.tu-article-main .tu-prev-next a { border: 1px solid #dbe2ec; border-radius: 8px; padding: 16px 18px; background: #fff; color: var(--tu-article-blue); text-decoration: none; }
.tu-article-main .tu-prev-next a:last-child { text-align: right; }
.tu-article-main .tu-prev-next a:hover, .tu-article-main .tu-prev-next a:focus-visible { border-color: var(--tu-article-gold); background: #fffaf0; }
.tu-article-main .tu-prev-next__label { display: block; margin-bottom: 4px; color: var(--tu-article-muted); font-size: 13px; }

@media (max-width: 768px) {
  .tu-article-main { padding: 28px 12px 44px; }
  .tu-article-main .tu-article-layout { grid-template-columns: 1fr; gap: 24px; }
  .tu-article-main .tu-article-sidebar { position: static; grid-row: 1; }
  .tu-article-main .tu-related-articles__grid, .tu-article-main .tu-prev-next { grid-template-columns: 1fr; }
  .tu-article-main .tu-prev-next a:last-child { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  .tu-article-main .tu-article-card__link { transition: none; }
}