/* ========== Article polish: spacing, hierarchy, readability ========== */
:root{
  --ink:#0F172A; --muted:#64748B; --line:#E5E7EB; --bg:#F7F8FA;
  --card:#fff; --chip:#eef2ff; --chip-text:#1D4ED8;
  --radius-sm:10px; --radius:12px; --radius-lg:16px;
  --shadow-sm:0 2px 10px rgba(15,23,42,.06);
  --shadow:0 6px 20px rgba(15,23,42,.08);
  --shadow-lg:0 10px 30px rgba(15,23,42,.10);
  --leading:1.7; --leading-tight:1.35;
  --w-readable: 72ch;
  --space-1:6px; --space-2:8px; --space-3:10px; --space-4:12px; --space-5:14px; --space-6:16px;
  --space-7:18px; --space-8:20px; --space-9:22px; --space-10:24px; --space-12:28px; --space-14:32px;
}

/* Container rhythm */
.section.article{
  margin-inline: auto;
}

/* ======= HERO ======= */
.article-hero{
  background: linear-gradient(180deg, #eaf0ff, #fff 60%);
  border:1px solid #E8EEFF; border-radius:var(--radius-lg);
  padding:var(--space-10) var(--space-8);
  box-shadow:var(--shadow);
}
.article-hero .eyebrow{
  display:inline-block;
  font-size:12px; font-weight:800; letter-spacing:.4px; text-transform:uppercase;
  color:#294C9F; background:#f2f6ff; border:1px solid #dfe8ff;
  border-radius:999px; padding:2px 8px; margin-bottom:var(--space-4);
}
.article-hero h1{
  margin:0 0 var(--space-3);
  font-size:32px; font-weight:900; letter-spacing:.2px; line-height:1.15;
  color:var(--ink);
}
.article-hero .sub{
  margin:20px 0 0 0; color:var(--muted); font-size:15px; line-height:1.6;
  max-width: 68ch;
}

/* Byline / meta */
.meta{
  display:flex; gap:10px; flex-wrap:wrap; margin-top:var(--space-6);
  color:#475569; font-size:13px; align-items:center;
}
.meta .dot{ opacity:.5 }
.meta .byline{
  display:flex; align-items:center; gap:8px;
}
.meta .byline .avatar{
  width:28px; height:28px; border-radius:50%; background:#cdd9ff; display:inline-block;
  border:1px solid #dfe8ff;
}

/* ======= ARTICLE BODY ======= */
.article{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:var(--space-10) var(--space-8); box-shadow:var(--shadow);
}
.article > *:first-child{ margin-top:0 }
.article > *:last-child{ margin-bottom:0 }

.article p{
  line-height:var(--leading); color:var(--ink); margin:0 0 var(--space-6);
  font-size:15.5px;
}
.article .lead{
  font-size:17px; line-height:1.75; color:#0c1528; margin-bottom:var(--space-8);
}

/* Headings */
.article h2{
  font-size:22px; margin:var(--space-12) 0 var(--space-4); line-height:var(--leading-tight);
  letter-spacing:.1px; color:#0c1730; font-weight:900;
}
.article h3{
  font-size:18px; margin:var(--space-8) 0 var(--space-3); line-height:1.4; font-weight:800; color:#0e1a33;
}
.article h4{
  font-size:16px; margin:var(--space-7) 0 var(--space-2); line-height:1.4; font-weight:800; color:#12203f;
}

/* Links */
.article a{ color:#0A56D0; text-decoration:none; border-bottom:1px solid rgba(13,86,208,.25); }
.article a:hover{ text-decoration:none; border-bottom-color: rgba(13,86,208,.6); }

/* Lists */
.article ul, .article ol{ margin:0 0 var(--space-6) 0; padding-left:22px; }
.article li{ margin:6px 0; }
.article li::marker{ color:#8aa7ff; }

/* Figures & images */
.article figure{
  margin: var(--space-10) 0; background:#fafbff; border:1px solid #eef2ff; border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow-sm);
}
.article figure img{ display:block; width:100%; height:auto }
.article figcaption{
  font-size:13px; color:#52607b; padding:8px 12px; border-top:1px solid #eef2ff;
}

/* Code & pre */
.article code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size:13px; background:#f8fafc; color:#0f1b33; border:1px solid #e5e7eb;
  border-radius:6px; padding:1px 5px; text-wrap:auto;
}
.article pre {
    background: #f7f6f6;
    color: #000000;
    padding: 14px;
    border-radius: 10px;
    overflow: auto;
    border: 1px solid #dcdee3;
    box-shadow: var(--shadow);
}
.article pre code{ background:transparent; border:none; color:inherit; padding:0 }

/* Blockquote / Pullquote */
.article blockquote{
  margin: var(--space-8) 0; padding:10px 14px; border-left:4px solid #93b4ff;
  color:#0f1d3a; background:#f7f9ff; border:1px solid #e8efff; border-radius:10px;
}
.pullquote{
  font-size:18px; font-weight:800; color:#0F172A; padding:12px 14px; border-left:4px solid var(--brand);
  background:#f8faff; border:1px solid #eaf0ff; border-radius:12px; margin:14px 0;
}

/* TOC */
.toc{
  background:#f8faff; border:1px solid #eaf0ff; border-radius:12px; padding:12px; margin:16px 0 18px;
}
.toc b{ display:block; margin-bottom:6px; font-size:13px; color:#0F172A; letter-spacing:.2px }
.toc a{ display:inline-block; margin:4px 10px 0 0; font-size:13px; color:#214dbe; }
.toc a:hover{ text-decoration:underline }

/* Callouts */
.callout{
  background:#f3f4f5; border:1px solid #E6EEF8; border-radius:12px; padding:14px; margin:16px 0;
  box-shadow:0 4px 16px rgb(0 0 0 / 10%);
}
.callout strong{ color:#0F172A }

/* CTA buttons */
.cta-row{
  display:flex; gap:10px; flex-wrap:wrap; margin-top:var(--space-8)
}
.btn{
  appearance:none; border:1px solid #BFD4FF; background:#fff; color:#2D6CF6;
  border-radius:10px; padding:10px 14px; font-weight:800; font-size:13px; text-decoration:none; display:inline-flex; align-items:center; gap:8px;
  box-shadow:var(--shadow-sm);
}
.btn.primary{ background:#2D6CF6; color:#fff; border-color:#2D6CF6 }
.btn:hover{ opacity:.9 }

/* Badges & chips */
.badge{
  display:inline-block; background:var(--chip); color:var(--chip-text);
  border:1px solid #c7d2fe; padding:2px 8px; border-radius:999px; font-size:11px; font-weight:800
}

/* Horizontal rule & tables */
.article hr{
  border:0; border-top:1px solid var(--line); margin: var(--space-10) 0;
}
.article table{
  width:100%; border-collapse:separate; border-spacing:0; margin: var(--space-8) 0;
  font-size:14px;
}
.article th, .article td{
  text-align:left; padding:10px 12px; border-bottom:1px solid #eef1f6;
}
.article thead th{
  background:#f6f8ff; border-bottom:1px solid #e4e9ff; color:#0e1b3a; font-weight:800;
}
.article tbody tr:hover{ background:#fbfcff }

/* FAQ alignment inside article cards (if present) */
.faq .faq-item + .faq-item{ margin-top:var(--space-6) }
.faq .faq-item h3{ margin:0 0 4px; font-size:16px; }
.faq .faq-item p{ margin:0 }

/* Accessibility: focus */
.article a:focus, .btn:focus{
  outline:2px solid #94b4ff; outline-offset:2px;
  border-radius:calc(var(--radius-sm) + 2px);
}

/* Print-friendly */
@media print{
  .article, .article-hero{ box-shadow:none; border-color:#ddd; background:#fff }
  .btn, .cta-row, .toc{ display:none !important }
}

/* Responsive typography */
@media (max-width: 860px){
  .article-hero{ padding:var(--space-9) var(--space-7) }
  .article-hero h1{ font-size:28px }
  .article{ padding:var(--space-9) var(--space-7) }
}
@media (max-width: 640px){
  .article-hero h1{ font-size:24px }
  .article p{ font-size:15px }
  .article h2{ font-size:20px }
  .article h3{ font-size:16px }
}