@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');

:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --blue: #3b82f6;
  --blue-soft: #eff6ff;
  --orange: #f97316;
  --orange-soft: #fff7ed;
  --green: #10b981;
  --green-soft: #ecfdf5;
  --purple: #8b5cf6;
  --purple-soft: #f5f3ff;
  --amber: #f59e0b;
  --amber-soft: #fefbeb;
  --shadow: 0 10px 30px -10px rgba(51, 65, 85, 0.08), 0 1px 3px rgba(51, 65, 85, 0.02);
  --shadow-hover: 0 20px 40px -15px rgba(51, 65, 85, 0.12), 0 1px 5px rgba(51, 65, 85, 0.04);
  --radius: 16px;
  --radius-sm: 10px;
  --max: 760px;
  font-family:
    "Be Vietnam Pro", "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #f4f8ff 0%, var(--bg) 320px, #ffffff 100%);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
}

a:hover {
  color: #2563eb;
  text-decoration: underline;
}

/* Header */
.seo-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.seo-header-inner,
.seo-main,
.seo-footer-inner {
  max-width: calc(var(--max) + 48px);
  margin: 0 auto;
  padding: 0 24px;
}

.seo-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
  max-width: 1180px;
}

.seo-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 18px;
  color: #0f172a;
  text-decoration: none;
}

.seo-brand:hover {
  text-decoration: none;
}

.seo-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--blue-soft), #dbeafe);
  color: var(--blue);
  font-size: 20px;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
}

.seo-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.seo-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  font-size: 14px;
  font-weight: 700;
  color: #334155;
  padding: 0 14px;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.seo-nav a:hover {
  background: #eef6ff;
  color: #1d4ed8;
  text-decoration: none;
}

.seo-nav-primary {
  color: #ffffff !important;
  background: #2563eb;
  box-shadow: 0 10px 18px -12px rgba(37, 99, 235, 0.7);
}

.seo-nav-primary:hover {
  color: #ffffff !important;
  background: #1d4ed8 !important;
}

/* Main Layout */
.seo-main {
  padding: 40px 24px 80px;
}

.seo-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.seo-breadcrumb a {
  color: var(--muted);
  font-weight: 600;
}

.seo-breadcrumb a:hover {
  color: var(--blue);
}

.seo-breadcrumb li:not(:last-child)::after {
  content: "•";
  margin-left: 8px;
  color: #cbd5e1;
}

/* Article Hero */
.seo-article h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 5vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  color: #0f172a;
  letter-spacing: 0;
}

.seo-meta {
  margin: 0 0 32px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.seo-meta::before {
  content: "✨";
  font-size: 16px;
}

/* Answer-First Intro Box */
.seo-lead {
  margin: 0 0 36px;
  padding: 24px 28px;
  border-radius: var(--radius);
  background: var(--orange-soft);
  border: 1px solid #ffedd5;
  border-left: 6px solid var(--orange);
  font-size: 17px;
  color: #431407;
  box-shadow: var(--shadow);
}

.seo-lead strong {
  color: #7c2d12;
  font-weight: 700;
}

/* Learning Map (TOC) */
.seo-toc {
  margin: 0 0 40px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.seo-toc h2 {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 800;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 10px;
}

.seo-toc h2::before {
  content: "🗺️";
  font-size: 20px;
}

.seo-toc ol {
  margin: 0;
  padding-left: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px 24px;
}

.seo-toc li {
  font-size: 15px;
  font-weight: 600;
}

.seo-toc a {
  color: #334155;
}

.seo-toc a:hover {
  color: var(--blue);
  text-decoration: none;
}

/* Content Elements */
.seo-article h2 {
  margin: 48px 0 20px;
  font-size: 24px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.seo-article h2::before {
  content: "🎯";
  font-size: 22px;
}

.seo-article h2[id^="tai-de-thi"]::before {
  content: "📥";
}

.seo-article h2[id^="chu-de"]::before {
  content: "📚";
}

.seo-article h2[id^="huong-on"]::before {
  content: "💡";
}

.seo-article h2[id^="lo-trinh"]::before {
  content: "🚀";
}

.seo-article h2[id^="tu-cham"]::before {
  content: "✍️";
}

.seo-article h2[id^="faq"]::before {
  content: "❓";
}

.seo-article h3 {
  margin: 32px 0 12px;
  font-size: 19px;
  font-weight: 700;
  color: #1e293b;
}

.seo-article p {
  margin: 0 0 20px;
  font-size: 16px;
  color: #334155;
}

.seo-article ul,
.seo-article ol {
  margin: 0 0 24px;
  padding-left: 24px;
}

.seo-article li {
  margin: 8px 0;
  font-size: 16px;
  color: #334155;
}

/* Beautiful Tables */
.seo-article table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 24px 0 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.seo-article th,
.seo-article td {
  padding: 14px 18px;
  text-align: left;
  vertical-align: middle;
}

.seo-article th {
  background: var(--blue-soft);
  color: #1e3a8a;
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0;
  border-bottom: 1px solid var(--line);
}

.seo-article td {
  border-bottom: 1px solid #f1f5f9;
  font-size: 15px;
  color: #334155;
  background: var(--surface);
}

.seo-article tr:last-child td {
  border-bottom: none;
}

.seo-article tr:hover td {
  background: #f8fafc;
}

/* Callout Box (Exam Strategy Card) */
.seo-article ul:not(.seo-pdf-list) {
  background: var(--purple-soft);
  border: 1px solid #e9d5ff;
  border-radius: var(--radius);
  padding: 24px 28px 24px 44px;
  margin: 28px 0;
  box-shadow: var(--shadow);
  position: relative;
}

.seo-article ul:not(.seo-pdf-list)::before {
  content: "💡";
  position: absolute;
  left: 16px;
  top: 22px;
  font-size: 20px;
}

.seo-article ul:not(.seo-pdf-list) li {
  color: #4c1d95;
  font-weight: 500;
  margin: 10px 0;
}

/* PDF Download Cards */
.seo-pdf-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 24px 0 32px;
  padding: 0;
  list-style: none;
}

.seo-pdf-list li {
  margin: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  transition: all 0.3s ease;
}

.seo-pdf-list li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--blue);
}

.seo-pdf-list a {
  font-size: 15px;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.4;
}

.seo-pdf-list a:hover {
  color: var(--blue);
  text-decoration: none;
}

.seo-pdf-meta {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 800;
  color: #dc2626;
  background: #fef2f2;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.seo-pdf-meta::before {
  content: "📄";
}

/* Call to Action (CTA) */
.seo-cta {
  margin: 56px 0;
  padding: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  color: #ffffff;
  text-align: center;
  box-shadow: 0 20px 40px -15px rgba(59, 130, 246, 0.3);
  position: relative;
  overflow: hidden;
}

.seo-cta h2 {
  margin: 0 0 12px;
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  justify-content: center;
}

.seo-cta h2::before {
  content: "🚀";
}

.seo-cta p {
  margin: 0 0 24px;
  color: #93c5fd;
  font-size: 16px;
  font-weight: 500;
}

.seo-cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 32px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: #1e3a8a;
  font-weight: 800;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
}

.seo-cta-button:hover {
  transform: scale(1.03);
  background: #f8fafc;
  color: #1e3a8a;
  text-decoration: none;
}

/* FAQ Accordion */
.seo-faq {
  margin: 56px 0 0;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.seo-faq-item {
  margin: 0 0 16px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: all 0.2s ease;
}

.seo-faq-item:hover {
  border-color: #cbd5e1;
}

.seo-faq-item h3 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 800;
  color: #0f172a;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.seo-faq-item h3::before {
  content: "Q.";
  color: var(--orange);
  font-weight: 900;
}

.seo-faq-item p {
  margin: 0;
  color: #475569;
  font-size: 15px;
  padding-left: 22px;
  line-height: 1.6;
}

/* Related Posts */
.seo-related {
  margin: 56px 0 0;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.seo-related h2 {
  margin: 0 0 20px;
  font-size: 20px;
  font-weight: 800;
  color: #0f172a;
}

.seo-related ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

.seo-related li {
  margin: 0;
}

.seo-related a {
  display: block;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: #334155;
  font-weight: 600;
  font-size: 14px;
  box-shadow: var(--shadow);
}

.seo-related a:hover {
  border-color: var(--blue);
  color: var(--blue);
  text-decoration: none;
}

/* Footer */
.seo-footer {
  border-top: 1px solid var(--line);
  background: #ffffff;
  padding: 32px 0;
  margin-top: 80px;
}

.seo-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
  color: var(--muted);
}

.seo-trademark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.seo-trademark-mark {
  font-size: 12px;
  opacity: 0.7;
}

.seo-trademark-brand {
  font-weight: 800;
  color: #0f172a;
}

/* Hub page */
.seo-hub {
  max-width: 1180px;
  padding-top: 32px;
}

.seo-hub-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 28px;
  align-items: stretch;
  margin: 0 0 24px;
  padding: 34px;
  border: 1px solid #dbeafe;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(239, 246, 255, 0.92), rgba(255, 255, 255, 0.96) 52%, rgba(240, 253, 244, 0.78)),
    #ffffff;
  box-shadow: 0 24px 60px -34px rgba(15, 23, 42, 0.32);
}

.seo-hub-hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.seo-hub h1 {
  margin: 0 0 14px;
  max-width: 680px;
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.08;
  color: #0f172a;
}

.seo-hub-lead {
  max-width: 720px;
  margin: 0 0 24px;
  color: #475569;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 500;
  line-height: 1.65;
}

.seo-hub-actions,
.seo-hub-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.seo-hub-actions {
  margin: 0 0 22px;
}

.seo-button-primary,
.seo-button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
}

.seo-button-primary {
  color: #ffffff;
  background: #2563eb;
  box-shadow: 0 14px 24px -14px rgba(37, 99, 235, 0.75);
}

.seo-button-primary:hover {
  color: #ffffff;
  background: #1d4ed8;
  text-decoration: none;
  transform: translateY(-1px);
}

.seo-button-secondary {
  color: #0f172a;
  background: #ffffff;
  border: 1px solid #cbd5e1;
}

.seo-button-secondary:hover {
  color: #1d4ed8;
  border-color: #93c5fd;
  background: #f8fbff;
  text-decoration: none;
}

.seo-hub-stats {
  color: #475569;
  font-size: 13px;
  font-weight: 700;
}

.seo-hub-stats span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid #dbeafe;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.seo-hub-stats strong {
  color: #0f172a;
  font-weight: 900;
}

.seo-hub-plan {
  align-self: stretch;
  padding: 22px;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.seo-hub-plan h2 {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 800;
  color: #14532d;
}

.seo-hub-plan ol {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.seo-hub-plan li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #f8fafc;
}

.seo-hub-plan li > span {
  grid-row: 1 / 3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  color: #1d4ed8;
  background: #dbeafe;
  font-weight: 900;
}

.seo-hub-plan strong,
.seo-hub-plan small {
  grid-column: 2;
  display: block;
}

.seo-hub-plan strong {
  color: #0f172a;
  font-size: 14px;
  line-height: 1.35;
}

.seo-hub-plan small {
  color: #64748b;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.45;
}

.seo-hub-illustration {
  display: block;
  width: 100%;
  height: 118px;
  margin-top: 14px;
  border: 1px solid #dbeafe;
  border-radius: 8px;
  object-fit: cover;
  object-position: 72% 46%;
}

.seo-hub-quick {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0 0 26px;
}

.seo-hub-quick a {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 4px 12px;
  align-items: center;
  min-height: 108px;
  padding: 18px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #ffffff;
  color: #0f172a;
  box-shadow: 0 16px 36px -30px rgba(15, 23, 42, 0.45);
}

.seo-hub-quick a:hover {
  border-color: #93c5fd;
  background: #f8fbff;
  text-decoration: none;
  transform: translateY(-2px);
}

.seo-hub-quick span {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: #fff7ed;
  font-size: 20px;
}

.seo-hub-quick strong {
  font-size: 15px;
  font-weight: 800;
}

.seo-hub-quick small {
  color: #64748b;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.45;
}

.seo-topic-strip {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) 1fr;
  gap: 18px;
  align-items: center;
  margin: 0 0 36px;
  padding: 22px;
  border-radius: 8px;
  background: #0f172a;
  color: #ffffff;
}

.seo-topic-strip h2 {
  margin: 0 0 6px;
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
}

.seo-topic-strip p {
  margin: 0;
  color: #cbd5e1;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.55;
}

.seo-topic-strip nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.seo-topic-strip a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 13px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: #e0f2fe;
  background: rgba(255, 255, 255, 0.08);
  font-size: 13px;
  font-weight: 800;
}

.seo-topic-strip a:hover {
  color: #0f172a;
  background: #fde68a;
  border-color: #fde68a;
  text-decoration: none;
}

.seo-hub-section {
  margin: 0 0 42px;
  scroll-margin-top: 92px;
}

.seo-hub-section-heading {
  display: grid;
  grid-template-columns: 46px 1fr auto;
  gap: 14px;
  align-items: center;
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid #dbeafe;
}

.seo-hub-section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 8px;
  background: #eef6ff;
  font-size: 22px;
}

.seo-hub-section h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
}

.seo-hub-section-heading p {
  margin: 4px 0 0;
  color: #64748b;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.45;
}

.seo-hub-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 8px;
  background: #fef3c7;
  color: #92400e;
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.seo-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
}

.seo-hub-link {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 136px;
  padding: 18px 18px 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: #0f172a;
  font-weight: 800;
  font-size: 16px;
  line-height: 1.35;
  box-shadow: 0 12px 34px -30px rgba(15, 23, 42, 0.45);
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.seo-hub-link:hover {
  border-color: #93c5fd;
  background: #f8fbff;
  transform: translateY(-2px);
  box-shadow: 0 20px 42px -32px rgba(15, 23, 42, 0.5);
  text-decoration: none;
}

.seo-hub-link span {
  display: block;
  margin-top: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
}

.seo-hub-link::after {
  content: "Đọc hướng dẫn";
  position: absolute;
  left: 18px;
  bottom: 16px;
  color: #2563eb;
  font-size: 13px;
  font-weight: 900;
}

.seo-hub-link:hover::after {
  color: #1d4ed8;
}

@media (max-width: 640px) {
  .seo-header-inner {
    flex-direction: column;
    align-items: flex-start;
    min-height: auto;
    padding-top: 14px;
    padding-bottom: 14px;
    gap: 12px;
  }

  .seo-brand {
    font-size: 16px;
  }

  .seo-brand-mark {
    width: 36px;
    height: 36px;
  }

  .seo-nav {
    width: 100%;
    gap: 4px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .seo-nav a {
    flex: 0 0 auto;
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }

  .seo-main {
    padding-top: 32px;
  }

  .seo-hub {
    padding: 20px 16px 56px;
  }

  .seo-hub-hero {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 22px 18px;
    margin-bottom: 18px;
  }

  .seo-hub h1 {
    font-size: clamp(31px, 10vw, 42px);
    line-height: 1.12;
  }

  .seo-hub-lead {
    font-size: 15px;
  }

  .seo-hub-actions {
    align-items: stretch;
  }

  .seo-button-primary,
  .seo-button-secondary {
    flex: 1 1 100%;
    min-height: 46px;
  }

  .seo-hub-stats span {
    flex: 1 1 100%;
  }

  .seo-hub-plan {
    padding: 16px;
  }

  .seo-hub-illustration {
    display: none;
  }

  .seo-hub-quick {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .seo-hub-quick a {
    min-height: 94px;
  }

  .seo-topic-strip {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .seo-topic-strip nav {
    justify-content: flex-start;
  }

  .seo-topic-strip a {
    flex: 1 1 calc(50% - 10px);
    justify-content: center;
    text-align: center;
  }

  .seo-hub-section {
    margin-bottom: 34px;
  }

  .seo-hub-section-heading {
    grid-template-columns: 42px 1fr;
    align-items: start;
  }

  .seo-hub-section-icon {
    width: 42px;
    height: 42px;
  }

  .seo-hub-count {
    grid-column: 2;
    justify-self: start;
  }

  .seo-hub-grid {
    grid-template-columns: 1fr;
  }

  .seo-hub-link {
    min-height: 128px;
  }

  .seo-article table {
    font-size: 13px;
  }

  .seo-article th,
  .seo-article td {
    padding: 10px 12px;
  }

  .seo-toc ol {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 641px) and (max-width: 980px) {
  .seo-hub-hero,
  .seo-topic-strip {
    grid-template-columns: 1fr;
  }

  .seo-topic-strip nav {
    justify-content: flex-start;
  }

  .seo-hub-quick {
    grid-template-columns: 1fr;
  }
}