/**
 * 9Reading — Demo page stylesheet (v2 · 3 demo modes)
 *
 * Scope: tất cả selectors dưới .nine-reading-demo để không xung đột với Flatsome.
 * Prefix: .nrd- (nine reading demo)
 *
 * Sections:
 *  1. Hero + 3 proof pills
 *  2. 3 Demo mode cards (Luyện riêng / Mix 2 dạng / Full passage)
 *  3. 12 question types grid
 *  4. Điều khiến 9Reading khác biệt (4 cards 2×2)
 *  5. Pro unlock section (dark ink)
 *  6. Final CTA
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;1,6..72,400;1,6..72,500;1,6..72,600&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,500;1,8..60,400&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ============ CSS VARS + ROOT ============ */
.nine-reading-demo {
  --nrd-bg: #FBFAF6;
  --nrd-bg-2: #F4EFE2;
  --nrd-bg-3: #EFE9D8;
  --nrd-ink: #1A1816;
  --nrd-ink-2: #2D2A26;
  --nrd-mute: #6B6258;
  --nrd-accent: #C8442C;
  --nrd-accent-dark: #A23420;
  --nrd-highlight: #FFE34A;
  --nrd-green: #2F5D3A;
  --nrd-green-light: #E8F0EA;
  --nrd-rule: rgba(26, 24, 22, 0.10);
  --nrd-rule-2: rgba(26, 24, 22, 0.18);

  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--nrd-bg);
  color: var(--nrd-ink);
  font-size: 16.5px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.nine-reading-demo * { box-sizing: border-box; }
.nine-reading-demo ::selection { background: var(--nrd-highlight); color: var(--nrd-ink); }

/* Reset Flatsome typography defaults */
.nine-reading-demo h1,
.nine-reading-demo h2,
.nine-reading-demo h3,
.nine-reading-demo h4,
.nine-reading-demo p,
.nine-reading-demo ul,
.nine-reading-demo li {
  margin: 0;
  padding: 0;
}
.nine-reading-demo ul { list-style: none; }

.nine-reading-demo .nrd-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ============ HERO ============ */
.nine-reading-demo .nrd-hero {
  padding: 96px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.nine-reading-demo .nrd-hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -180px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(255, 227, 74, 0.10) 0%, transparent 65%);
  pointer-events: none;
}
.nine-reading-demo .nrd-hero::after {
  content: '';
  position: absolute;
  bottom: -180px; left: -160px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(200, 68, 44, 0.06) 0%, transparent 65%);
  pointer-events: none;
}
.nine-reading-demo .nrd-hero-inner { position: relative; z-index: 1; }

.nine-reading-demo .nrd-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  color: var(--nrd-mute);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 22px;
}
.nine-reading-demo .nrd-kicker::before,
.nine-reading-demo .nrd-kicker::after {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--nrd-accent);
}

.nine-reading-demo h1.nrd-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.032em;
  line-height: 1.05;
  margin: 0 auto 22px;
  max-width: 820px;
  color: var(--nrd-ink);
}
.nine-reading-demo h1.nrd-title em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--nrd-accent);
  font-size: 1.04em;
}

.nine-reading-demo .nrd-sub {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-size: 21px;
  line-height: 1.55;
  color: var(--nrd-ink-2);
  max-width: 720px;
  margin: 0 auto;
}
.nine-reading-demo .nrd-sub strong {
  color: var(--nrd-accent);
  font-weight: 500;
}

.nine-reading-demo .nrd-hero-proof {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 26px auto 0;
  max-width: 860px;
}
.nine-reading-demo .nrd-proof-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  background: rgba(255, 227, 74, 0.30);
  border: 1px solid rgba(26, 24, 22, 0.12);
  border-radius: 999px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--nrd-ink-2);
}
.nine-reading-demo .nrd-proof-pill::before {
  content: '✓';
  color: var(--nrd-green);
  font-weight: 800;
}

/* ============ 3 MODE CARDS ============ */
.nine-reading-demo .nrd-modes-section {
  padding: 24px 0 88px;
  position: relative;
}
.nine-reading-demo .nrd-modes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px;
}
.nine-reading-demo .nrd-mode-card {
  border-radius: 18px;
  padding: 32px 28px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}
.nine-reading-demo .nrd-mode-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -24px rgba(26, 24, 22, 0.20);
}

.nine-reading-demo .nrd-mode-1 {
  background: var(--nrd-bg);
  border: 1.5px solid var(--nrd-rule-2);
}
.nine-reading-demo .nrd-mode-2 {
  background: linear-gradient(180deg, rgba(255, 227, 74, 0.10) 0%, var(--nrd-bg-2) 100%);
  border: 1.5px solid rgba(255, 227, 74, 0.40);
}
.nine-reading-demo .nrd-mode-3 {
  background: var(--nrd-ink);
  color: var(--nrd-bg);
  border: 1.5px solid var(--nrd-ink);
  box-shadow: 0 24px 48px -24px rgba(26, 24, 22, 0.30);
  position: relative;
  overflow: hidden;
}
.nine-reading-demo .nrd-mode-3::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle at top right, rgba(255, 227, 74, 0.12) 0%, transparent 65%);
  pointer-events: none;
  border-top-right-radius: 18px;
}
.nine-reading-demo .nrd-mode-3 > * { position: relative; z-index: 1; }

.nine-reading-demo .nrd-mode-step {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.nine-reading-demo .nrd-mode-step-num {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 500;
  font-size: 28px;
  line-height: 1;
  color: var(--nrd-accent);
}
.nine-reading-demo .nrd-mode-3 .nrd-mode-step-num { color: var(--nrd-highlight); }
.nine-reading-demo .nrd-mode-step-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--nrd-mute);
}
.nine-reading-demo .nrd-mode-1 .nrd-mode-step-label { color: var(--nrd-accent); }
.nine-reading-demo .nrd-mode-2 .nrd-mode-step-label { color: #8B6F00; }
.nine-reading-demo .nrd-mode-3 .nrd-mode-step-label { color: rgba(251, 250, 246, 0.6); }

.nine-reading-demo .nrd-mode-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.022em;
  margin-bottom: 10px;
}
.nine-reading-demo .nrd-mode-title em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 500;
}
.nine-reading-demo .nrd-mode-1 .nrd-mode-title em { color: var(--nrd-accent); }
.nine-reading-demo .nrd-mode-2 .nrd-mode-title em { color: #8B6F00; }
.nine-reading-demo .nrd-mode-3 .nrd-mode-title em { color: var(--nrd-highlight); }

.nine-reading-demo .nrd-mode-desc {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 15px;
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
}
.nine-reading-demo .nrd-mode-1 .nrd-mode-desc { color: var(--nrd-ink-2); }
.nine-reading-demo .nrd-mode-2 .nrd-mode-desc { color: var(--nrd-ink-2); }
.nine-reading-demo .nrd-mode-3 .nrd-mode-desc { color: rgba(251, 250, 246, 0.80); }
.nine-reading-demo .nrd-mode-desc strong { font-weight: 600; }
.nine-reading-demo .nrd-mode-3 .nrd-mode-desc strong { color: var(--nrd-bg); }

/* CTA button — defensive vs Flatsome <a> */
.nine-reading-demo a.nrd-mode-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 20px;
  text-decoration: none !important;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 14.5px;
  border-radius: 100px;
  transition: all 0.2s;
  margin-top: auto;
  margin-bottom: 14px;
  line-height: 1.2;
}
.nine-reading-demo .nrd-mode-1 a.nrd-mode-cta,
.nine-reading-demo .nrd-mode-2 a.nrd-mode-cta {
  background: var(--nrd-ink);
  color: var(--nrd-bg) !important;
  border: 1.5px solid var(--nrd-ink);
}
.nine-reading-demo .nrd-mode-1 a.nrd-mode-cta:hover,
.nine-reading-demo .nrd-mode-2 a.nrd-mode-cta:hover {
  background: transparent;
  color: var(--nrd-ink) !important;
}
.nine-reading-demo .nrd-mode-3 a.nrd-mode-cta {
  background: var(--nrd-accent);
  color: var(--nrd-bg) !important;
  border: none;
  box-shadow: 0 4px 0 var(--nrd-accent-dark);
}
.nine-reading-demo .nrd-mode-3 a.nrd-mode-cta:hover {
  background: var(--nrd-accent-dark);
  color: var(--nrd-bg) !important;
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--nrd-accent-dark);
}
.nine-reading-demo a.nrd-mode-cta span { transition: transform 0.2s; display: inline-block; }
.nine-reading-demo a.nrd-mode-cta:hover span { transform: translateX(3px); }

.nine-reading-demo .nrd-mode-lock {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--nrd-mute);
  text-align: center;
  padding-top: 10px;
  border-top: 1px solid var(--nrd-rule);
}
.nine-reading-demo .nrd-mode-3 .nrd-mode-lock {
  color: rgba(251, 250, 246, 0.55);
  border-top-color: rgba(251, 250, 246, 0.12);
}
.nine-reading-demo .nrd-mode-lock em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrd-accent);
  font-weight: 500;
}
.nine-reading-demo .nrd-mode-3 .nrd-mode-lock em { color: var(--nrd-highlight); }

/* ============ 12 TYPES SECTION ============ */
.nine-reading-demo .nrd-types-section {
  padding: 80px 0;
  background: var(--nrd-bg-2);
  border-top: 1px solid var(--nrd-rule);
  border-bottom: 1px solid var(--nrd-rule);
}
.nine-reading-demo .nrd-section-head {
  text-align: center;
  margin-bottom: 40px;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}
.nine-reading-demo .nrd-block-kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--nrd-accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.nine-reading-demo .nrd-section-head h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.15;
  color: var(--nrd-ink);
  margin-bottom: 12px;
}
.nine-reading-demo .nrd-section-head h2 em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrd-accent);
  font-weight: 400;
  font-size: 1.04em;
}
.nine-reading-demo .nrd-section-head p {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-size: 18px;
  color: var(--nrd-ink-2);
  line-height: 1.5;
}

.nine-reading-demo .nrd-types-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.nine-reading-demo .nrd-type-card {
  background: var(--nrd-bg);
  border: 1px solid var(--nrd-rule);
  border-radius: 12px;
  padding: 18px 20px;
  transition: all 0.2s;
}
.nine-reading-demo .nrd-type-card:hover {
  border-color: var(--nrd-rule-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -12px rgba(26, 24, 22, 0.10);
}
.nine-reading-demo .nrd-type-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.nine-reading-demo .nrd-type-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 22px;
  padding: 0 8px;
  background: rgba(200, 68, 44, 0.10);
  color: var(--nrd-accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 5px;
  flex-shrink: 0;
}
.nine-reading-demo .nrd-type-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--nrd-ink);
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.nine-reading-demo .nrd-type-desc {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--nrd-ink-2);
}

/* ============ DIFFERENT SECTION ============ */
.nine-reading-demo .nrd-different-section {
  padding: 88px 0;
}
.nine-reading-demo .nrd-different-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.nine-reading-demo .nrd-diff-card {
  background: var(--nrd-bg);
  border: 1px solid var(--nrd-rule);
  border-radius: 14px;
  padding: 28px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
}
.nine-reading-demo .nrd-diff-num {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 500;
  font-size: 36px;
  line-height: 1;
  color: var(--nrd-accent);
  margin-bottom: 12px;
}
.nine-reading-demo .nrd-diff-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.018em;
  line-height: 1.25;
  color: var(--nrd-ink);
  margin-bottom: 10px;
}
.nine-reading-demo .nrd-diff-title em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrd-accent);
  font-weight: 500;
}
.nine-reading-demo .nrd-diff-desc {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--nrd-ink-2);
}
.nine-reading-demo .nrd-diff-desc strong { color: var(--nrd-ink); font-weight: 600; }
.nine-reading-demo .nrd-diff-desc em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrd-accent);
  font-weight: 500;
}

/* ============ PRO UNLOCK SECTION ============ */
.nine-reading-demo .nrd-pro-section {
  padding: 88px 0;
  background: var(--nrd-ink);
  color: var(--nrd-bg);
  position: relative;
  overflow: hidden;
}
.nine-reading-demo .nrd-pro-section::before {
  content: '';
  position: absolute;
  top: -200px; right: -140px;
  width: 620px; height: 620px;
  background: radial-gradient(circle, rgba(255, 227, 74, 0.10) 0%, transparent 65%);
  pointer-events: none;
}
.nine-reading-demo .nrd-pro-section::after {
  content: '';
  position: absolute;
  bottom: -180px; left: -160px;
  width: 560px; height: 560px;
  background: radial-gradient(circle, rgba(200, 68, 44, 0.10) 0%, transparent 65%);
  pointer-events: none;
}
.nine-reading-demo .nrd-pro-inner {
  position: relative;
  z-index: 1;
}
.nine-reading-demo .nrd-pro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.nine-reading-demo .nrd-pro-text .nrd-block-kicker { color: var(--nrd-highlight); margin-bottom: 14px; }
.nine-reading-demo .nrd-pro-text h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.024em;
  line-height: 1.15;
  color: var(--nrd-bg);
  margin-bottom: 18px;
}
.nine-reading-demo .nrd-pro-text h2 em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrd-highlight);
  font-weight: 400;
  font-size: 1.04em;
}
.nine-reading-demo .nrd-pro-prose {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 17px;
  line-height: 1.65;
  color: rgba(251, 250, 246, 0.82);
  margin-bottom: 26px;
}
.nine-reading-demo .nrd-pro-prose strong { color: var(--nrd-bg); font-weight: 600; }
.nine-reading-demo .nrd-pro-prose em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrd-highlight);
  font-weight: 500;
}

/* Pro CTA — defensive vs Flatsome <a> */
.nine-reading-demo a.nrd-pro-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: var(--nrd-accent);
  color: var(--nrd-bg) !important;
  text-decoration: none !important;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 15px;
  border-radius: 100px;
  box-shadow: 0 4px 0 var(--nrd-accent-dark);
  transition: all 0.2s;
  line-height: 1.2;
}
.nine-reading-demo a.nrd-pro-cta:hover {
  background: var(--nrd-accent-dark);
  color: var(--nrd-bg) !important;
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--nrd-accent-dark);
}
.nine-reading-demo a.nrd-pro-cta span { transition: transform 0.2s; display: inline-block; }
.nine-reading-demo a.nrd-pro-cta:hover span { transform: translateX(3px); }

.nine-reading-demo .nrd-pro-features {
  background: rgba(251, 250, 246, 0.05);
  border: 1px solid rgba(251, 250, 246, 0.10);
  border-radius: 16px;
  padding: 32px;
}
.nine-reading-demo .nrd-pro-feat-heading {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--nrd-highlight);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.nine-reading-demo .nrd-pro-feat {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(251, 250, 246, 0.08);
}
.nine-reading-demo .nrd-pro-feat:last-child { border-bottom: none; }
.nine-reading-demo .nrd-pro-feat-num {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 227, 74, 0.18);
  color: var(--nrd-highlight);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}
.nine-reading-demo .nrd-pro-feat-text {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 14.5px;
  font-weight: 500;
  color: rgba(251, 250, 246, 0.92);
  line-height: 1.45;
}
.nine-reading-demo .nrd-pro-feat-text strong { font-weight: 700; color: var(--nrd-bg); }
.nine-reading-demo .nrd-pro-feat-text em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrd-highlight);
  font-weight: 500;
}

/* ============ FINAL CTA ============ */
.nine-reading-demo .nrd-final-wrap {
  padding: 80px 0 100px;
  background: var(--nrd-bg-2);
  border-top: 1px solid var(--nrd-rule);
}
.nine-reading-demo .nrd-final {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  padding: 0 32px;
}
.nine-reading-demo .nrd-final-kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--nrd-accent);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.nine-reading-demo .nrd-final h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.024em;
  line-height: 1.15;
  color: var(--nrd-ink);
  margin-bottom: 16px;
}
.nine-reading-demo .nrd-final h2 em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--nrd-accent);
}
.nine-reading-demo .nrd-final-sub {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-size: 19px;
  color: var(--nrd-ink-2);
  line-height: 1.5;
  margin-bottom: 32px;
}
.nine-reading-demo .nrd-final-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Final CTA buttons — defensive vs Flatsome <a> */
.nine-reading-demo a.nrd-final-btn-primary,
.nine-reading-demo a.nrd-final-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 30px;
  text-decoration: none !important;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 15px;
  border-radius: 100px;
  transition: all 0.2s;
  line-height: 1.2;
}
.nine-reading-demo a.nrd-final-btn-primary {
  background: var(--nrd-ink);
  color: var(--nrd-bg) !important;
  border: 1.5px solid var(--nrd-ink);
}
.nine-reading-demo a.nrd-final-btn-primary:hover {
  background: transparent;
  color: var(--nrd-ink) !important;
}
.nine-reading-demo a.nrd-final-btn-secondary {
  background: transparent;
  color: var(--nrd-ink) !important;
  border: 1.5px solid var(--nrd-ink);
}
.nine-reading-demo a.nrd-final-btn-secondary:hover {
  background: var(--nrd-ink);
  color: var(--nrd-bg) !important;
}
.nine-reading-demo a.nrd-final-btn-primary span,
.nine-reading-demo a.nrd-final-btn-secondary span {
  transition: transform 0.2s;
  display: inline-block;
}
.nine-reading-demo a.nrd-final-btn-primary:hover span,
.nine-reading-demo a.nrd-final-btn-secondary:hover span { transform: translateX(3px); }

/* ============ RESPONSIVE ============ */
@media (max-width: 980px) {
  .nine-reading-demo .nrd-modes-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .nine-reading-demo .nrd-mode-card {
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
  }
  .nine-reading-demo .nrd-types-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nine-reading-demo .nrd-pro-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 900px) {
  .nine-reading-demo h1.nrd-title { font-size: 44px; }
  .nine-reading-demo .nrd-sub { font-size: 18px; }
  .nine-reading-demo .nrd-section-head h2,
  .nine-reading-demo .nrd-pro-text h2 { font-size: 28px; }
  .nine-reading-demo .nrd-final h2 { font-size: 32px; }
}

@media (max-width: 640px) {
  .nine-reading-demo .nrd-container { padding: 0 22px; }
  .nine-reading-demo .nrd-hero { padding: 64px 0 32px; }
  .nine-reading-demo h1.nrd-title { font-size: 32px; }
  .nine-reading-demo .nrd-sub { font-size: 16px; }
  .nine-reading-demo .nrd-modes-section { padding: 18px 0 64px; }
  .nine-reading-demo .nrd-mode-card { padding: 28px 24px 24px; }
  .nine-reading-demo .nrd-mode-title { font-size: 21px; }
  .nine-reading-demo .nrd-types-section,
  .nine-reading-demo .nrd-different-section,
  .nine-reading-demo .nrd-pro-section { padding: 56px 0; }
  .nine-reading-demo .nrd-types-grid {
    grid-template-columns: 1fr;
  }
  .nine-reading-demo .nrd-different-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .nine-reading-demo .nrd-diff-card { padding: 24px 26px; }
  .nine-reading-demo .nrd-pro-features { padding: 22px; }
  .nine-reading-demo .nrd-final-wrap { padding: 56px 0 72px; }
  .nine-reading-demo .nrd-final h2 { font-size: 26px; }
  .nine-reading-demo .nrd-final-sub { font-size: 16.5px; }
}

/* ============ ROADMAP SECTION (lộ trình 4 giai đoạn) ============ */
.nine-reading-demo .nrd-roadmap-section { padding: 88px 0; }
.nine-reading-demo .nrd-rm-timeline { max-width: 880px; margin: 8px auto 0; }
.nine-reading-demo .nrd-rm-phase {
  --node: var(--nrd-accent);
  display: grid; grid-template-columns: 64px 1fr; gap: 22px;
  position: relative; padding-bottom: 30px;
}
.nine-reading-demo .nrd-rm-phase:last-child { padding-bottom: 0; }
.nine-reading-demo .nrd-rm-phase:not(:last-child)::before {
  content: ''; position: absolute; left: 31px; top: 66px; bottom: -2px;
  width: 2px; background: var(--nrd-rule-2);
}
.nine-reading-demo .nrd-rm-p1 { --node: var(--nrd-green); }
.nine-reading-demo .nrd-rm-p2 { --node: #8B6F00; }
.nine-reading-demo .nrd-rm-p3 { --node: var(--nrd-accent); }
.nine-reading-demo .nrd-rm-p4 { --node: var(--nrd-ink); }
.nine-reading-demo .nrd-rm-node {
  width: 64px; height: 64px; border-radius: 50%;
  border: 2.5px solid var(--node); background: var(--nrd-bg);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Newsreader', serif; font-style: italic; font-weight: 600;
  font-size: 30px; color: var(--node); position: relative; z-index: 1;
}
.nine-reading-demo .nrd-rm-body { padding-top: 3px; }
.nine-reading-demo .nrd-rm-stage {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--node); margin-bottom: 6px;
}
.nine-reading-demo .nrd-rm-goal {
  font-family: 'Plus Jakarta Sans', sans-serif; font-size: 20px; font-weight: 700;
  letter-spacing: -0.018em; line-height: 1.3; color: var(--nrd-ink); margin-bottom: 14px;
}
.nine-reading-demo .nrd-rm-flow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.nine-reading-demo .nrd-rm-chip {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 14px 7px 8px; background: var(--nrd-bg);
  border: 1px solid var(--nrd-rule); border-radius: 100px;
}
.nine-reading-demo .nrd-rm-tag {
  display: inline-flex; align-items: center; justify-content: center;
  height: 22px; padding: 0 8px; background: rgba(200, 68, 44, 0.10); color: var(--nrd-accent);
  font-family: 'JetBrains Mono', monospace; font-size: 10px; font-weight: 700;
  letter-spacing: 0.06em; border-radius: 5px; flex-shrink: 0;
}
.nine-reading-demo .nrd-rm-nm {
  font-family: 'Plus Jakarta Sans', sans-serif; font-size: 13.5px; font-weight: 600;
  color: var(--nrd-ink-2); white-space: nowrap;
}
.nine-reading-demo .nrd-rm-arrow { color: var(--node); font-weight: 800; font-size: 15px; opacity: 0.7; }
.nine-reading-demo .nrd-rm-note {
  max-width: 880px; margin: 36px auto 0;
  background: var(--nrd-bg-2); border: 1px solid var(--nrd-rule);
  border-left: 4px solid var(--nrd-accent); border-radius: 12px; padding: 22px 26px;
}
.nine-reading-demo .nrd-rm-note-label {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--nrd-accent);
  margin-bottom: 8px; display: flex; align-items: center; gap: 8px;
}
.nine-reading-demo .nrd-rm-note p {
  font-family: 'Source Serif 4', Georgia, serif; font-size: 15.5px; line-height: 1.6; color: var(--nrd-ink-2);
}
.nine-reading-demo .nrd-rm-note strong { color: var(--nrd-ink); font-weight: 600; }
.nine-reading-demo .nrd-rm-note em { font-family: 'Newsreader', serif; font-style: italic; color: var(--nrd-accent); font-weight: 500; }
@media (max-width: 640px) {
  .nine-reading-demo .nrd-roadmap-section { padding: 56px 0; }
  .nine-reading-demo .nrd-rm-phase { grid-template-columns: 48px 1fr; gap: 16px; }
  .nine-reading-demo .nrd-rm-node { width: 48px; height: 48px; font-size: 24px; }
  .nine-reading-demo .nrd-rm-phase:not(:last-child)::before { left: 23px; top: 50px; }
  .nine-reading-demo .nrd-rm-goal { font-size: 18px; }
}

/* ===================== DEMO REDESIGN ADD-ONS ===================== */
/* (v3) bỏ 3-mode → graded distribution; nút "Làm thử" cho 12 dạng; section Mix+Full */

/* --- "Làm thử" button trong mỗi type card --- */
.nine-reading-demo .nrd-type-card { display: flex; flex-direction: column; }
.nine-reading-demo .nrd-type-desc { flex: 1 1 auto; }
.nine-reading-demo .nrd-type-cta {
  align-self: flex-start;
  margin-top: 16px;
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--nrd-accent); color: #fff;
  font-weight: 700; font-size: 13.5px;
  padding: 9px 18px; border-radius: 100px;
  text-decoration: none;
  box-shadow: 0 3px 0 var(--nrd-accent-dark);
  transition: transform .1s ease, box-shadow .1s ease, background .15s ease;
}
.nine-reading-demo .nrd-type-cta span { transition: transform .15s ease; }
.nine-reading-demo .nrd-type-cta:hover {
  background: var(--nrd-accent-dark); color: #fff;
  transform: translateY(2px); box-shadow: 0 1px 0 var(--nrd-accent-dark);
}
.nine-reading-demo .nrd-type-cta:hover span { transform: translateX(3px); }

/* --- Graded distribution visual (Dễ→Khó, Ngắn→Dài) --- */
.nine-reading-demo .nrd-grade { margin-top: 8px; }
.nine-reading-demo .nrd-grade-labels {
  display: flex; justify-content: space-between;
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  letter-spacing: .05em; text-transform: uppercase;
  color: var(--nrd-mute); margin-bottom: 10px;
}
.nine-reading-demo .nrd-grade-bar {
  position: relative; height: 14px; border-radius: 100px;
  background: linear-gradient(90deg, var(--nrd-bg-3) 0%, #E8A48F 55%, var(--nrd-accent) 100%);
}
.nine-reading-demo .nrd-grade-dot {
  position: absolute; top: 50%; transform: translate(-50%, -50%);
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3px solid var(--nrd-accent);
  box-shadow: 0 1px 4px rgba(26, 24, 22, .2);
}
.nine-reading-demo .nrd-grade-points {
  display: flex; gap: 18px; flex-wrap: wrap; margin-top: 30px;
}
.nine-reading-demo .nrd-grade-point {
  flex: 1; min-width: 230px;
  background: #fff; border: 1px solid var(--nrd-rule);
  border-radius: 16px; padding: 22px 24px;
}
.nine-reading-demo .nrd-grade-num {
  font-family: 'JetBrains Mono', monospace; font-size: 13px;
  font-weight: 700; color: var(--nrd-accent); margin-bottom: 8px;
}
.nine-reading-demo .nrd-grade-t {
  font-weight: 700; font-size: 17px; letter-spacing: -.01em; margin-bottom: 6px;
}
.nine-reading-demo .nrd-grade-d {
  font-size: 14.5px; color: var(--nrd-ink-2); line-height: 1.6;
}
.nine-reading-demo .nrd-grade-note {
  margin-top: 24px; text-align: center; font-style: italic;
  font-family: 'Source Serif 4', Georgia, serif;
  color: var(--nrd-mute); font-size: 15.5px;
}

/* --- Mix + Full Passage: lưới 2 card căn giữa --- */
.nine-reading-demo .nrd-mixfull-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
  max-width: 780px; margin-left: auto; margin-right: auto;
}
@media (max-width: 720px) {
  .nine-reading-demo .nrd-mixfull-grid { grid-template-columns: 1fr; }
}