:root {
  --article-width: 760px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.blog-hero {
  padding: 76px 0 52px;
}

.blog-hero h1,
.article-header h1 {
  margin-top: 16px;
  font-size: clamp(2.1rem, 5vw, 4rem);
  line-height: 1.08;
  max-width: 19ch;
}

.blog-hero .lead,
.article-header .lead {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.article-list {
  padding: 0 0 96px;
}

.article-card {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow-md);
}

.article-card img {
  width: 100%;
  height: 100%;
  min-height: 330px;
  object-fit: cover;
}

.article-card-content {
  padding: clamp(26px, 5vw, 48px);
  align-self: center;
}

.article-card h2 {
  margin-top: 14px;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.2;
}

.article-card h2 a:hover,
.article-card h2 a:focus-visible {
  color: var(--brand-dark);
}

.article-card p {
  margin-top: 16px;
  color: var(--ink-soft);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 18px;
  color: #64748b;
  font-size: 0.9rem;
  font-weight: 700;
}

.read-link {
  display: inline-flex;
  margin-top: 24px;
  color: var(--brand-dark);
  font-weight: 800;
}

.article-header {
  padding: 70px 0 34px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: #64748b;
  font-size: 0.9rem;
  font-weight: 700;
}

.breadcrumbs a {
  color: var(--brand-dark);
}

.article-header h1 {
  max-width: 22ch;
  font-size: clamp(2rem, 5vw, 3.65rem);
}

.article-hero-image {
  display: block;
  width: min(1200px, 92vw);
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--article-width)) minmax(210px, 260px);
  justify-content: center;
  gap: clamp(36px, 6vw, 72px);
  align-items: start;
  padding: 56px 0 96px;
}

.article-body {
  min-width: 0;
  font-size: 1.04rem;
  color: var(--ink-soft);
}

.article-body > * + * {
  margin-top: 20px;
}

.article-body h2 {
  margin-top: 52px;
  color: var(--ink);
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  line-height: 1.25;
  scroll-margin-top: 110px;
}

.article-body h3 {
  margin-top: 34px;
  color: var(--ink);
  font-size: 1.25rem;
  scroll-margin-top: 110px;
}

.article-body ul,
.article-body ol {
  padding-left: 1.4rem;
}

.article-body li + li {
  margin-top: 8px;
}

.article-body a {
  color: var(--brand-dark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.quick-take,
.source-note,
.app-promo {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(22px, 4vw, 30px);
  background: #ffffff;
  box-shadow: var(--shadow-md);
}

.quick-take {
  border-left: 5px solid var(--accent);
}

.quick-take h2,
.source-note h2,
.app-promo h2 {
  margin-top: 0;
}

.source-note {
  margin-top: 52px;
  font-size: 0.95rem;
  background: #f8fafc;
}

.app-promo {
  margin-top: 52px;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 18px;
  align-items: start;
  background: linear-gradient(145deg, #ffffff, #eff6ff);
}

.app-promo > img {
  width: 72px;
  height: 72px;
  border-radius: 18px;
}

.app-promo-content > * + * {
  margin-top: 14px;
}

.app-promo .app-store-badge {
  margin-top: 18px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
  background: #ffffff;
}

.article-body th,
.article-body td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.article-body th {
  color: var(--ink);
  background: #eff6ff;
}

.article-body tr:last-child td {
  border-bottom: 0;
}

.toc {
  position: sticky;
  top: 104px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-md);
}

.toc h2 {
  font-size: 1rem;
}

.toc ol {
  margin: 16px 0 0;
  padding-left: 1.15rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.toc li + li {
  margin-top: 10px;
}

.toc a:hover,
.toc a:focus-visible {
  color: var(--brand-dark);
}

.article-disclaimer {
  color: #64748b;
  font-size: 0.88rem;
}

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

  .article-card img {
    min-height: 0;
  }

  .article-layout {
    padding-top: 36px;
  }

  .toc {
    grid-row: 1;
    position: static;
  }

  .toc ol {
    columns: 2;
    column-gap: 32px;
  }
}

@media (max-width: 620px) {
  .blog-hero,
  .article-header {
    padding-top: 48px;
  }

  .toc ol {
    columns: 1;
  }

  .app-promo {
    grid-template-columns: 1fr;
  }
}