.article-main { background: #f7faff; }
.article-hero { padding: 76px 0 54px; background: linear-gradient(180deg, #edf4ff 0%, #f7faff 100%); }
.article-hero .container { max-width: 930px; }
.article-kicker { margin-bottom: 14px; color: var(--blue-700); font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.article-hero h1 { max-width: 900px; margin-bottom: 22px; font-size: clamp(2.45rem, 6vw, 4.5rem); }
.article-deck { max-width: 790px; color: #42546a; font-size: 1.14rem; line-height: 1.7; }
.article-meta { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 25px; color: #5d6d82; font-size: .82rem; }
.breadcrumb { margin-bottom: 26px; color: #52657c; font-size: .8rem; }
.breadcrumb a { color: var(--blue-700); }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 54px; align-items: start; padding: 62px 0 80px; }
.article-body { min-width: 0; max-width: 820px; }
.article-body h2 { margin: 52px 0 18px; font-size: clamp(1.65rem, 3vw, 2.35rem); }
.article-body h3 { margin: 30px 0 12px; color: var(--blue-900); font-size: 1.22rem; }
.article-body p, .article-body li { color: #3e5065; font-size: 1rem; line-height: 1.78; }
.article-body ul, .article-body ol { display: grid; gap: 10px; margin: 16px 0 26px 23px; }
.article-body a { color: var(--blue-700); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.article-note, .article-warning, .article-example { margin: 28px 0; padding: 22px 24px; border-radius: 15px; }
.article-note { border-left: 4px solid var(--blue-500); background: #eaf2ff; }
.article-warning { border-left: 4px solid #d4831c; background: #fff6e8; }
.article-example { border: 1px solid var(--line); background: #fff; }
.article-note strong, .article-warning strong, .article-example strong { display: block; margin-bottom: 7px; color: var(--blue-950); }
.article-table-wrap { max-width: 100%; overflow-x: auto; margin: 24px 0 34px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.article-table { width: 100%; border-collapse: collapse; min-width: 620px; }
.article-table th, .article-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); color: #3e5065; line-height: 1.55; text-align: left; vertical-align: top; }
.article-table th { color: var(--blue-950); background: #edf4ff; }
.article-sidebar { position: sticky; top: 128px; display: grid; gap: 18px; }
.article-card { padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: 0 10px 30px rgba(16,54,109,.07); }
.article-card h2 { margin-bottom: 12px; font-size: 1.2rem; }
.article-card p { color: #52657c; font-size: .86rem; line-height: 1.6; }
.article-card .button { width: 100%; margin-top: 16px; text-align: center; }
.article-related { display: grid; gap: 10px; margin-top: 13px; }
.article-related a { color: var(--blue-700); font-size: .85rem; line-height: 1.45; }
.article-sources { padding-left: 0; list-style: none; }
.article-sources li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.article-faq { margin-top: 34px; }
.article-faq details { margin-bottom: 12px; padding: 17px 19px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.article-faq summary { cursor: pointer; color: var(--blue-950); font-weight: 750; }
.article-faq details p { margin-top: 12px; }
.resources-section { padding: 66px 0; background: #f2f6fb; }
.resources-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 28px; }
.resource-link { padding: 21px; border: 1px solid var(--line); border-radius: 14px; color: var(--blue-950); background: #fff; text-decoration: none; }
.resource-link strong { display: block; margin-bottom: 6px; }
.resource-link span { color: #5a6c82; font-size: .83rem; line-height: 1.5; }
@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .article-hero { padding: 52px 0 40px; }
  .article-layout { padding: 44px 0 62px; }
  .article-sidebar, .resources-grid { grid-template-columns: 1fr; }
  .article-body p, .article-body li { font-size: .96rem; }
}