:root {
  --article-ink: #172033;
  --article-muted: #5f6878;
  --article-line: #e4e5ec;
  --article-soft: #f7f6fb;
  --article-purple: #6c3dff;
}

.knowledge-hero {
  padding: 128px 24px 72px;
  background: radial-gradient(circle at 80% 0%, rgba(108, 61, 255, .14), transparent 38%), #faf9fd;
  border-bottom: 1px solid var(--article-line);
}
.knowledge-shell, .article-shell { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.knowledge-hero h1 { max-width: 820px; margin: 14px 0 20px; font-size: clamp(42px, 7vw, 76px); line-height: 1.05; letter-spacing: -.055em; }
.knowledge-hero .page-lead { max-width: 720px; }
.knowledge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 56px 0 88px; }
.knowledge-card { display: flex; min-height: 250px; flex-direction: column; padding: 28px; border: 1px solid var(--article-line); border-radius: 22px; background: #fff; transition: transform .2s, box-shadow .2s; }
.knowledge-card:hover { transform: translateY(-4px); box-shadow: 0 22px 48px rgba(28, 24, 50, .09); }
.knowledge-card small { color: var(--article-purple); font-weight: 750; }
.knowledge-card h2 { margin: 28px 0 12px; font-size: 25px; line-height: 1.25; letter-spacing: -.03em; }
.knowledge-card p { color: var(--article-muted); }
.knowledge-card span { margin-top: auto; font-weight: 750; }
.knowledge-empty { grid-column: 1 / -1; padding: 28px; border-radius: 18px; background: var(--article-soft); color: var(--article-muted); }

.article-page { background: #fff; }
.article-hero { padding: 126px 24px 58px; background: radial-gradient(circle at 78% 4%, rgba(108, 61, 255, .14), transparent 35%), #faf9fd; border-bottom: 1px solid var(--article-line); }
.article-hero-inner { width: min(920px, calc(100% - 48px)); margin: 0 auto; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; color: var(--article-muted); font-size: 14px; }
.breadcrumbs a:hover { color: var(--article-purple); }
.article-kicker { margin: 30px 0 14px; color: var(--article-purple); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.article-hero h1 { max-width: 880px; margin: 0; color: var(--article-ink); font-size: clamp(38px, 6vw, 66px); line-height: 1.08; letter-spacing: -.055em; }
.article-deck { max-width: 760px; margin: 22px 0; color: var(--article-muted); font-size: 20px; line-height: 1.7; }
.article-meta { display: flex; flex-wrap: wrap; gap: 12px 22px; color: var(--article-muted); font-size: 14px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) 240px; gap: 72px; align-items: start; width: min(1080px, calc(100% - 48px)); margin: 0 auto; padding: 64px 0 96px; }
.article-body { color: var(--article-ink); font-size: 17px; line-height: 1.85; }
.article-body h2 { margin: 58px 0 18px; font-size: 32px; line-height: 1.25; letter-spacing: -.035em; }
.article-body h3 { margin: 34px 0 12px; font-size: 22px; line-height: 1.35; }
.article-body p, .article-body ul, .article-body ol { margin: 0 0 20px; }
.article-body ul, .article-body ol { padding-left: 1.3em; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: #5230c9; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.direct-answer { margin-bottom: 42px; padding: 26px 28px; border-left: 4px solid var(--article-purple); border-radius: 0 18px 18px 0; background: #f5f2ff; }
.direct-answer strong { display: block; margin-bottom: 8px; color: var(--article-purple); }
.article-table-wrap { margin: 26px 0 34px; overflow-x: auto; border: 1px solid var(--article-line); border-radius: 16px; }
.article-body table { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 15px; }
.article-body th, .article-body td { padding: 15px 16px; border-bottom: 1px solid var(--article-line); text-align: left; vertical-align: top; }
.article-body th { background: var(--article-soft); }
.article-body tr:last-child td { border-bottom: 0; }
.boundary-note { margin: 42px 0; padding: 24px 26px; border: 1px solid #f0d6ae; border-radius: 18px; background: #fffaf2; }
.source-list { padding: 24px 26px; border-radius: 18px; background: var(--article-soft); }
.source-list li { overflow-wrap: anywhere; }
.article-aside { position: sticky; top: 104px; padding: 20px; border: 1px solid var(--article-line); border-radius: 18px; background: #fff; font-size: 14px; }
.article-aside strong { display: block; margin-bottom: 10px; }
.article-aside a { display: block; padding: 8px 0; color: var(--article-muted); }
.article-aside a:hover { color: var(--article-purple); }
.article-cta { margin-top: 60px; padding: 34px; border-radius: 24px; background: #211938; color: #fff; }
.article-cta h2 { margin-top: 0; color: #fff; }
.article-cta p { color: #d8d1e8; }
.article-cta .button { text-decoration: none; }

@media (max-width: 900px) {
  .knowledge-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; gap: 0; }
  .article-aside { display: none; }
}
@media (max-width: 640px) {
  .knowledge-shell, .article-shell, .article-hero-inner, .article-layout { width: min(100% - 32px, 1120px); }
  .knowledge-hero, .article-hero { padding-top: 104px; }
  .knowledge-grid { grid-template-columns: 1fr; padding-top: 34px; }
  .article-deck { font-size: 18px; }
  .article-layout { padding-top: 40px; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 27px; }
  .direct-answer, .source-list, .article-cta { padding: 22px; }
}