.article-hero {
  overflow: hidden;
  padding: 64px 0 70px;
  background: linear-gradient(145deg, #fbfbff 0%, #f0efff 58%, #f7fbff 100%);
}

.article-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr);
  align-items: center;
  gap: 72px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: .82rem;
}

.breadcrumbs a { color: var(--brand-dark); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }
.article-hero h1 { max-width: 800px; margin-bottom: 22px; font-size: clamp(2.6rem, 5vw, 4.65rem); line-height: 1.02; }
.article-lead { max-width: 760px; margin-bottom: 27px; font-size: 1.2rem; line-height: 1.7; }

.article-meta { display: flex; align-items: center; gap: 12px; }
.article-meta img { width: 48px; height: 48px; object-fit: cover; border: 2px solid #fff; border-radius: 50%; box-shadow: 0 5px 18px rgba(29,25,86,.13); }
.article-meta p { margin: 0; color: var(--ink); font-size: .88rem; line-height: 1.35; }
.article-meta strong, .article-meta span { display: block; }
.article-meta span { margin-top: 2px; color: var(--muted); font-size: .78rem; }
.article-cover { margin: 0; }
.article-cover .product-window { transform: rotate(1.5deg); }

.article-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 790px);
  justify-content: center;
  gap: 72px;
  padding-top: 78px;
  padding-bottom: 90px;
}

.article-index {
  position: sticky;
  top: 108px;
  align-self: start;
  padding: 22px;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: 15px;
}

.article-index p { margin: 0 0 12px; color: var(--ink); font-size: .76rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.article-index a { display: block; padding: 6px 0; color: var(--muted); font-size: .88rem; font-weight: 700; text-decoration: none; }
.article-index a:hover { color: var(--brand-dark); }
.article-body { min-width: 0; }
.article-section { padding: 0 0 62px; margin: 0 0 62px; border-bottom: 1px solid var(--line); scroll-margin-top: 110px; }
.article-section h2, .article-sources h2 { max-width: 720px; margin-bottom: 22px; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.12; }
.article-section h3 { margin-top: 34px; font-size: 1.35rem; }
.article-section > p:not(.eyebrow):not(.callout), .article-sources p { font-size: 1.07rem; line-height: 1.8; }

.summary-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 30px 0; }
.summary-grid > div { min-height: 126px; padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 9px 25px rgba(35,31,81,.04); }
.summary-grid strong, .summary-grid span { display: block; }
.summary-grid strong { margin-bottom: 8px; color: var(--brand-dark); }
.summary-grid span { color: var(--muted); line-height: 1.55; }
.callout { padding: 22px 24px; color: #3f3a69; background: var(--brand-soft); border-left: 4px solid var(--brand); border-radius: 4px 12px 12px 4px; line-height: 1.7; }

.requirements-list { display: grid; gap: 13px; margin: 32px 0; }
.requirements-list article { display: grid; grid-template-columns: 46px 1fr; gap: 18px; padding: 24px; background: var(--surface-alt); border: 1px solid var(--line); border-radius: 14px; }
.requirements-list article > span { display: grid; width: 42px; height: 42px; place-items: center; color: #fff; background: var(--brand); border-radius: 50%; font-size: .75rem; font-weight: 900; }
.requirements-list h3 { margin: 0 0 5px; font-size: 1.08rem; }
.requirements-list p { margin: 0; font-size: .94rem; line-height: 1.6; }

.implementation-section { padding: 38px; background: var(--surface-alt); border: 1px solid var(--line); border-radius: 20px; }
.article-checklist { margin: 28px 0 36px; padding: 0; list-style: none; }
.article-checklist li { position: relative; margin: 13px 0; padding-left: 31px; line-height: 1.6; }
.article-checklist li::before { position: absolute; left: 0; top: 1px; color: var(--whatsapp); content: "✓"; font-weight: 900; }
.inline-cta { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; padding: 25px; color: #fff; background: var(--ink); border-radius: 15px; }
.inline-cta strong { display: block; margin-bottom: 4px; font-size: 1.1rem; }
.inline-cta p { margin: 0; color: #bdb9d0; font-size: .88rem; }
.inline-cta .button { white-space: nowrap; }

.article-sources { padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.article-sources h2 { margin-bottom: 10px; font-size: 1.35rem; }
.article-sources p { margin-bottom: 12px; font-size: .92rem; }
.article-sources a { color: var(--brand-dark); font-weight: 800; }

@media (max-width: 1000px) {
  .article-hero-grid { grid-template-columns: 1fr .8fr; gap: 42px; }
  .article-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 42px; }
}

@media (max-width: 760px) {
  .article-hero { padding: 34px 0 42px; }
  .article-hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .breadcrumbs { margin-bottom: 25px; }
  .article-hero h1 { font-size: clamp(2.35rem, 11vw, 3.4rem); }
  .article-lead { font-size: 1.06rem; }
  .article-cover { max-width: 560px; }
  .article-layout { display: block; padding-top: 38px; padding-bottom: 64px; }
  .article-index { position: static; margin-bottom: 48px; }
  .article-index a { display: inline-block; margin-right: 14px; }
  .article-section { padding-bottom: 44px; margin-bottom: 44px; }
  .summary-grid { grid-template-columns: 1fr; }
  .implementation-section { padding: 27px 22px; }
  .inline-cta { grid-template-columns: 1fr; }
  .inline-cta .button { width: 100%; }
}

@media (max-width: 480px) {
  .article-meta { align-items: flex-start; }
  .article-meta span { max-width: 240px; }
  .requirements-list article { grid-template-columns: 1fr; }
  .article-sources { padding: 22px; }
}