/* ============================================================
   ROI — Revenue Optimization & Intelligence
   Global Stylesheet
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #1a2436;
  --teal: #19bab0;
  --teal-light: #e0f7f5;
  --teal-dark: #148f87;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --red: #ef4444;
  --orange: #f59e0b;
  --green: #10b981;
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --max-w: 1200px;
  --max-w-narrow: 800px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.04);
  --shadow-lg: 0 4px 24px rgba(0,0,0,.1);
  --transition: .2s ease;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--navy);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--teal-dark); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--teal); }

h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }
h1 { font-size: 2.75rem; letter-spacing: -.02em; }
h2 { font-size: 2rem; letter-spacing: -.015em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.2rem; }

p { margin-bottom: 1rem; }
strong { font-weight: 700; }

/* ---------- Utility ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: var(--max-w-narrow); margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.text-teal { color: var(--teal); }
.text-navy { color: var(--navy); }
.text-gray { color: var(--gray-500); }
.text-sm { font-size: .875rem; }
.text-xs { font-size: .75rem; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 1rem; font-weight: 600;
  cursor: pointer; border: none; transition: all var(--transition);
  text-decoration: none;
}
.btn-primary { background: var(--teal); color: var(--white); }
.btn-primary:hover { background: var(--teal-dark); color: var(--white); }
.btn-secondary { background: var(--navy); color: var(--white); }
.btn-secondary:hover { background: var(--gray-800); color: var(--white); }
.btn-outline { background: transparent; color: var(--navy); border: 2px solid var(--gray-200); }
.btn-outline:hover { border-color: var(--teal); color: var(--teal); }
.btn-sm { padding: 10px 20px; font-size: .875rem; }
.btn-lg { padding: 18px 40px; font-size: 1.1rem; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}
.header-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo svg { height: 44px; width: auto; }
.logo-text { font-size: 1rem; font-weight: 700; color: var(--navy); line-height: 1.2; }
.logo-text span { display: block; font-size: .7rem; font-weight: 600; color: var(--gray-400); letter-spacing: 1px; text-transform: uppercase; }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
  padding: 8px 14px; border-radius: 6px;
  font-size: .875rem; font-weight: 500; color: var(--gray-600);
  transition: all var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--navy); background: var(--gray-50); }

.mobile-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; position: relative;
}
.mobile-toggle span {
  display: block; width: 22px; height: 2px; background: var(--navy);
  position: absolute; left: 9px; transition: all var(--transition);
}
.mobile-toggle span:nth-child(1) { top: 14px; }
.mobile-toggle span:nth-child(2) { top: 20px; }
.mobile-toggle span:nth-child(3) { top: 26px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy); color: var(--gray-300); padding: 48px 0 32px;
  margin-top: 80px;
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  text-align: center;
}
.footer-brand { font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.footer-tagline { font-size: .875rem; color: var(--gray-400); margin-bottom: 20px; font-style: italic; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-bottom: 24px; }
.footer-links a { color: var(--gray-400); font-size: .875rem; }
.footer-links a:hover { color: var(--teal); }
.footer-copy { font-size: .75rem; color: var(--gray-500); }
.footer-copy a { color: var(--gray-400); }
.footer-copy a:hover { color: var(--teal); }

/* ---------- Hero Section ---------- */
.hero {
  padding: 80px 0 64px;
  text-align: center;
  background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}
.hero h1 { margin-bottom: 20px; }
.hero p.lead { font-size: 1.15rem; color: var(--gray-600); max-width: 700px; margin: 0 auto 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- Stats Bar ---------- */
.stats-bar {
  background: var(--navy);
  padding: 32px 0;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  text-align: center;
}
.stat-item .stat-value { font-size: 1.5rem; font-weight: 800; color: var(--teal); margin-bottom: 4px; }
.stat-item .stat-label { font-size: .8rem; color: var(--gray-400); text-transform: uppercase; letter-spacing: 1px; font-weight: 500; }

/* ---------- Section ---------- */
.section { padding: 80px 0; }
.section-alt { background: var(--gray-50); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header .overline {
  font-size: .75rem; text-transform: uppercase; letter-spacing: 2px;
  color: var(--teal); font-weight: 700; margin-bottom: 12px;
}
.section-header h2 { margin-bottom: 16px; }
.section-header p { color: var(--gray-500); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* ---------- Card Grid ---------- */
.card-grid { display: grid; gap: 24px; }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 32px;
  transition: all var(--transition);
}
.card:hover { border-color: var(--teal); box-shadow: var(--shadow); }
.card .card-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--teal-light); color: var(--teal-dark);
  font-size: .875rem; font-weight: 800; margin-bottom: 16px;
}
.card .card-icon {
  font-size: 2rem; margin-bottom: 16px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card h4 { font-size: 1.05rem; margin-bottom: 10px; }
.card p { font-size: .925rem; color: var(--gray-600); line-height: 1.65; margin-bottom: 0; }
.card .card-link { font-size: .85rem; color: var(--teal); font-weight: 600; margin-top: 12px; display: inline-block; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: step; }
.step { text-align: center; }
.step-number {
  width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--teal); color: var(--white);
  font-size: 1.25rem; font-weight: 800;
}
.step h4 { margin-bottom: 8px; }
.step p { font-size: .925rem; color: var(--gray-600); }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; gap: 24px; }
.pricing-grid-3 { grid-template-columns: repeat(3, 1fr); }

.pricing-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 36px 28px; text-align: center;
  position: relative; transition: all var(--transition);
}
.pricing-card:hover { border-color: var(--teal); box-shadow: var(--shadow-lg); }
.pricing-card.featured { border-color: var(--teal); box-shadow: var(--shadow-lg); }
.pricing-card .badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--teal); color: var(--white);
  padding: 4px 16px; border-radius: 20px;
  font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px;
  white-space: nowrap;
}
.pricing-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.pricing-card .price { font-size: 2.5rem; font-weight: 800; color: var(--navy); margin: 12px 0 4px; }
.pricing-card .price-note { font-size: .8rem; color: var(--gray-400); margin-bottom: 20px; }
.pricing-card .orig-price { text-decoration: line-through; color: var(--gray-400); font-size: .9rem; }
.pricing-card ul { list-style: none; text-align: left; margin-bottom: 24px; }
.pricing-card li { font-size: .9rem; color: var(--gray-600); padding: 6px 0; padding-left: 24px; position: relative; }
.pricing-card li::before { content: "✓"; position: absolute; left: 0; color: var(--teal); font-weight: 700; }
.pricing-card .btn { width: 100%; justify-content: center; }

/* ---------- CTA Section ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--navy) 0%, #253651 100%);
  padding: 64px 0; text-align: center; color: var(--white);
}
.cta-section h2 { color: var(--white); margin-bottom: 16px; }
.cta-section p { color: var(--gray-300); max-width: 600px; margin: 0 auto 12px; }
.cta-section .cta-list { list-style: none; margin-bottom: 24px; text-align: center; }
.cta-section .cta-list li { color: var(--gray-300); font-size: .95rem; padding: 4px 0; }
.cta-section .cta-note { font-size: .8rem; color: var(--gray-500); margin-top: 8px; }

/* ---------- Article Content ---------- */
.article-hero {
  padding: 64px 0 32px;
  background: var(--gray-50);
  text-align: center;
}
.article-hero h1 { font-size: 2.25rem; margin-bottom: 12px; }
.article-hero .article-meta { color: var(--gray-500); font-size: .9rem; }
.article-content {
  max-width: var(--max-w-narrow); margin: 0 auto; padding: 48px 24px 80px;
}
.article-content h2 { margin: 40px 0 16px; font-size: 1.6rem; }
.article-content h3 { margin: 32px 0 12px; font-size: 1.3rem; }
.article-content h4 { margin: 24px 0 10px; font-size: 1.1rem; }
.article-content p { font-size: 1.05rem; line-height: 1.8; margin-bottom: 1.25rem; }
.article-content ul, .article-content ol { margin: 0 0 1.5rem 1.5rem; }
.article-content li { font-size: 1.05rem; line-height: 1.8; margin-bottom: .5rem; }
.article-content blockquote {
  border-left: 4px solid var(--teal); padding: 16px 24px;
  margin: 24px 0; background: var(--gray-50); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic; color: var(--gray-700);
}
.article-content table {
  width: 100%; border-collapse: collapse; margin: 24px 0;
  font-size: .9rem;
}
.article-content th, .article-content td {
  padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--gray-200);
}
.article-content th { background: var(--gray-50); font-weight: 700; font-size: .8rem; text-transform: uppercase; letter-spacing: .5px; }
.article-content .source-list { margin-top: 48px; border-top: 1px solid var(--gray-200); padding-top: 24px; }
.article-content .source-list h3 { font-size: 1rem; margin-bottom: 12px; }
.article-content .source-list ol { margin-left: 1.25rem; }
.article-content .source-list li { font-size: .85rem; line-height: 1.6; color: var(--gray-600); margin-bottom: 6px; }

.article-cta {
  background: var(--gray-50); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 32px; text-align: center;
  margin-top: 40px;
}
.article-cta h3 { margin-bottom: 8px; }
.article-cta p { color: var(--gray-600); margin-bottom: 16px; }

/* ---------- Quiz ---------- */
.quiz-section { padding: 64px 0; }
.quiz-card {
  max-width: 680px; margin: 0 auto;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 40px;
  box-shadow: var(--shadow);
}
.quiz-progress { display: flex; gap: 6px; margin-bottom: 32px; }
.quiz-progress-dot {
  flex: 1; height: 6px; border-radius: 3px; background: var(--gray-200);
  transition: background var(--transition);
}
.quiz-progress-dot.active { background: var(--teal); }
.quiz-progress-dot.done { background: var(--navy); }

.quiz-question { display: none; }
.quiz-question.active { display: block; }
.quiz-question h3 { font-size: 1.25rem; margin-bottom: 8px; }
.quiz-question .quiz-hint { font-size: .9rem; color: var(--gray-500); margin-bottom: 20px; }

.quiz-options { display: flex; flex-direction: column; gap: 10px; }
.quiz-option {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 16px; border: 2px solid var(--gray-200); border-radius: var(--radius-sm);
  cursor: pointer; transition: all var(--transition);
}
.quiz-option:hover { border-color: var(--teal); background: var(--teal-light); }
.quiz-option.selected { border-color: var(--teal); background: var(--teal-light); }
.quiz-option input { display: none; }
.quiz-option .option-radio {
  width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--gray-300);
  flex-shrink: 0; margin-top: 2px; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.quiz-option.selected .option-radio { border-color: var(--teal); background: var(--teal); }
.quiz-option.selected .option-radio::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--white); }
.quiz-option .option-check {
  width: 20px; height: 20px; border-radius: 4px; border: 2px solid var(--gray-300);
  flex-shrink: 0; margin-top: 2px; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.quiz-option.selected .option-check { border-color: var(--teal); background: var(--teal); }
.quiz-option.selected .option-check::after { content: "✓"; color: var(--white); font-size: .75rem; font-weight: 700; }
.quiz-option-text strong { display: block; font-size: .95rem; }
.quiz-option-text span { font-size: .85rem; color: var(--gray-500); }

.quiz-nav { display: flex; justify-content: space-between; margin-top: 28px; }

.quiz-result { display: none; text-align: center; }
.quiz-result.active { display: block; }
.score-circle {
  width: 140px; height: 140px; border-radius: 50%; margin: 0 auto 20px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  border: 6px solid var(--teal); background: var(--teal-light);
}
.score-circle .score-num { font-size: 2.5rem; font-weight: 800; color: var(--navy); line-height: 1; }
.score-circle .score-label { font-size: .75rem; color: var(--gray-500); }
.quiz-grade { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.quiz-recommendations { text-align: left; margin: 24px 0; }
.quiz-recommendations h4 { margin-bottom: 12px; }
.quiz-recommendations li { font-size: .95rem; margin-bottom: 8px; color: var(--gray-600); }

/* ---------- Audit ---------- */
.audit-phase { margin-bottom: 48px; }
.audit-phase-header {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 24px; background: var(--navy); color: var(--white);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.audit-phase-header h3 { font-size: 1.1rem; }
.audit-phase-num {
  width: 32px; height: 32px; border-radius: 50%; background: var(--teal);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .85rem; flex-shrink: 0;
}
.audit-items { border: 1px solid var(--gray-200); border-top: none; border-radius: 0 0 var(--radius-sm) var(--radius-sm); }
.audit-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 16px 20px; border-bottom: 1px solid var(--gray-100);
  transition: background var(--transition);
}
.audit-item:last-child { border-bottom: none; }
.audit-item:hover { background: var(--gray-50); }
.audit-item input[type="checkbox"] {
  width: 18px; height: 18px; accent-color: var(--teal);
  flex-shrink: 0; margin-top: 3px; cursor: pointer;
}
.audit-item-content { flex: 1; }
.audit-item-content strong { font-size: .95rem; display: block; margin-bottom: 4px; }
.audit-item-content p { font-size: .85rem; color: var(--gray-600); margin: 0; line-height: 1.5; }
.audit-risk {
  font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px;
  padding: 3px 10px; border-radius: 20px; white-space: nowrap; flex-shrink: 0;
}
.audit-risk.critical { background: #fef2f2; color: #dc2626; }
.audit-risk.high { background: #fff7ed; color: #ea580c; }
.audit-risk.medium { background: #fffbeb; color: #d97706; }

.audit-scorecard {
  background: var(--gray-50); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 40px; text-align: center;
  margin-top: 48px;
}
.audit-scorecard .score-bar {
  width: 100%; max-width: 400px; height: 24px;
  background: var(--gray-200); border-radius: 12px;
  margin: 20px auto; overflow: hidden; position: relative;
}
.audit-scorecard .score-fill {
  height: 100%; border-radius: 12px;
  background: linear-gradient(90deg, var(--red), var(--orange), var(--green));
  transition: width .5s ease;
}
.audit-scorecard .score-grade { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.audit-scorecard .score-desc { color: var(--gray-600); max-width: 500px; margin: 0 auto; }

/* ---------- Login ---------- */
.login-section { padding: 100px 0; }
.login-card {
  max-width: 420px; margin: 0 auto;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 40px;
  box-shadow: var(--shadow);
}
.login-card h2 { text-align: center; margin-bottom: 8px; }
.login-card .login-note { text-align: center; color: var(--gray-500); font-size: .9rem; margin-bottom: 28px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; color: var(--gray-700); }
.form-group input {
  width: 100%; padding: 12px 16px; border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm); font-family: var(--font); font-size: 1rem;
  transition: border-color var(--transition);
}
.form-group input:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(25,186,176,.15); }
.login-card .btn { width: 100%; justify-content: center; margin-top: 8px; }

/* ---------- Module Card ---------- */
.module-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 36px;
  margin-bottom: 32px; transition: all var(--transition);
}
.module-card:hover { border-color: var(--teal); box-shadow: var(--shadow); }
.module-id { font-size: .75rem; font-weight: 700; color: var(--teal); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.module-card h3 { font-size: 1.3rem; margin-bottom: 12px; }
.module-card p { color: var(--gray-600); }
.module-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 20px; }
.module-feature {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: .9rem; color: var(--gray-600);
}
.module-feature::before { content: "→"; color: var(--teal); font-weight: 700; flex-shrink: 0; }

/* ---------- Newsletter Card ---------- */
.newsletter-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 28px 32px;
  margin-bottom: 20px; transition: all var(--transition);
  display: flex; align-items: center; gap: 24px;
}
.newsletter-card:hover { border-color: var(--teal); box-shadow: var(--shadow); }
.newsletter-num {
  width: 48px; height: 48px; border-radius: 50%; flex-shrink: 0;
  background: var(--navy); color: var(--teal);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.1rem;
}
.newsletter-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.newsletter-card p { font-size: .9rem; color: var(--gray-500); margin: 0; }

/* ---------- Blog Card ---------- */
.blog-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 32px;
  transition: all var(--transition);
}
.blog-card:hover { border-color: var(--teal); box-shadow: var(--shadow); }
.blog-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.blog-card p { font-size: .925rem; color: var(--gray-600); margin-bottom: 12px; }
.blog-card .read-more { font-size: .875rem; color: var(--teal); font-weight: 600; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--gray-200); padding: 16px; box-shadow: var(--shadow-lg); z-index: 99; }
  .mobile-toggle { display: block; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid-3 { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }
  .steps { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .module-features { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  .hero { padding: 56px 0 48px; }
  .section { padding: 56px 0; }
  .card-grid-2, .card-grid-3, .card-grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item .stat-value { font-size: 1.25rem; }
  .newsletter-card { flex-direction: column; text-align: center; gap: 16px; }
  .quiz-card { padding: 28px 20px; }
  .article-hero h1 { font-size: 1.75rem; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  h1 { font-size: 1.75rem; }
  .hero-actions { flex-direction: column; align-items: center; }
}