/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #e8a020;
  --primary-dark: #c8841a;
  --primary-light: #ffc84a;
  --secondary: #1a1a2e;
  --dark: #0f0f1a;
  --dark2: #16213e;
  --accent: #e94560;
  --text: #2d2d2d;
  --text-light: #666;
  --bg-light: #f7f5f0;
  --white: #fff;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0,0,0,0.12);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.18);
  --transition: all 0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Be Vietnam Pro', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

img { max-width: 100%; display: block; }

a { text-decoration: none; color: inherit; }

/* ===== STICKY BAR ===== */
.sticky-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(90deg, var(--accent), #c0392b);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 10px 20px;
  font-size: 14px;
  transform: translateY(-100%);
  transition: transform 0.4s ease;
}
.sticky-bar.visible { transform: translateY(0); }
.btn-sticky {
  background: #fff;
  color: var(--accent);
  padding: 6px 18px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 13px;
  white-space: nowrap;
  transition: var(--transition);
}
.btn-sticky:hover { background: var(--primary-light); color: #fff; }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 40%, #16213e 70%, #0a2744 100%);
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(5, 10, 25, 0.72);
  z-index: 1;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(5,10,25,0.55) 0%, rgba(10,20,50,0.45) 50%, rgba(5,10,25,0.60) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
}

/* Hero 2-column layout */
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero-text {
  text-align: left;
}
.hero-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}
.hero-book-img {
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
  border: 3px solid rgba(232,160,32,0.35);
}
.hero-book-img img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
}
.hero-book-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: 50px;
  letter-spacing: 1px;
}
.hero-cta-box {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(232,160,32,0.25);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.hero-cta-box .price-box {
  margin-bottom: 0;
  width: 100%;
  justify-content: center;
}
.hero-cta-box .btn-hero {
  width: 100%;
  justify-content: center;
  margin-bottom: 0;
  font-size: 15px;
  padding: 16px 24px;
}
.hero-cta-box .hero-countdown {
  margin-bottom: 0;
  width: 100%;
  text-align: center;
}
.badge-top {
  display: inline-block;
  background: rgba(232,160,32,0.2);
  border: 1px solid rgba(232,160,32,0.5);
  color: var(--primary-light);
  padding: 8px 24px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero-line-nowrap {
  white-space: nowrap;
  display: inline-block;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub { font-size: clamp(15px, 2vw, 18px); color: rgba(255,255,255,0.85); margin-bottom: 36px; line-height: 1.8; }
.hero-sub strong { color: var(--primary-light); }
.highlight-tagline {
  color: var(--primary-light);
  font-weight: 800;
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
}

/* Price Box */
.price-box {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(232,160,32,0.3);
  border-radius: var(--radius);
  padding: 16px 32px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  justify-content: center;
}
.price-original {
  color: rgba(255,255,255,0.5);
  font-size: 15px;
}
.price-original s { color: #aaa; }
.price-sale {
  font-size: 42px;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
}
.price-badge {
  background: var(--accent);
  color: #fff;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
}

/* CTA Button */
.btn-hero {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 18px 40px;
  border-radius: 50px;
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 8px 30px rgba(232,160,32,0.4);
  transition: var(--transition);
  text-transform: uppercase;
  margin-bottom: 36px;
}
.btn-hero:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px rgba(232,160,32,0.5);
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
}
.btn-hero.pulse { animation: pulseAnim 2s infinite; }
@keyframes pulseAnim {
  0%, 100% { box-shadow: 0 8px 30px rgba(232,160,32,0.4); }
  50% { box-shadow: 0 8px 50px rgba(232,160,32,0.7), 0 0 0 12px rgba(232,160,32,0.1); }
}

/* Countdown */
.hero-countdown {
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  margin-bottom: 40px;
}
.countdown-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}
.cd-box {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(232,160,32,0.3);
  border-radius: 8px;
  padding: 10px 14px;
  text-align: center;
  min-width: 64px;
}
.cd-box span {
  display: block;
  font-size: 26px;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
}
.cd-box small {
  display: block;
  font-size: 10px;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}
.cd-sep {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 32px;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: #fff;
}
.stat i { font-size: 22px; color: var(--primary); }
.stat strong { font-size: 22px; font-weight: 800; }
.stat span { font-size: 12px; color: rgba(255,255,255,0.55); text-transform: uppercase; letter-spacing: 0.5px; }

/* ===== SECTIONS ===== */
.section { padding: 80px 0; }
.bg-dark { background: var(--secondary); color: #fff; }
.bg-light { background: var(--bg-light); }

.section-label {
  display: inline-block;
  background: rgba(232,160,32,0.12);
  border: 1px solid rgba(232,160,32,0.35);
  color: var(--primary-dark);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-label.light {
  background: rgba(232,160,32,0.15);
  border-color: rgba(232,160,32,0.4);
  color: var(--primary-light);
}
.section-title {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.25;
  margin-bottom: 16px;
}
.section-title span { color: var(--primary-dark); }
.section-title.light, .bg-dark .section-title { color: #fff; }
.bg-dark .section-title span { color: var(--primary-light); }
.section-desc {
  color: var(--text-light);
  font-size: 16px;
  margin-bottom: 40px;
}

/* ===== FOR WHOM ===== */
.for-whom { text-align: center; }
.cards-grid { display: grid; gap: 24px; }
.three-col { grid-template-columns: repeat(3, 1fr); }
.card-item {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 2px solid transparent;
}
.card-item:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}
.card-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.card-icon i { font-size: 26px; color: #fff; }
.card-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; color: var(--secondary); }
.card-item p { font-size: 14px; color: var(--text-light); }

/* ===== PROBLEMS ===== */
.problems { text-align: center; }
.problems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.problem-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: left;
  transition: var(--transition);
}
.problem-item:hover { background: rgba(255,255,255,0.08); border-color: rgba(232,160,32,0.3); }
.prob-icon {
  width: 48px; height: 48px;
  background: rgba(233,69,96,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.prob-icon i { font-size: 20px; color: var(--accent); }
.problem-item.prob-result .prob-icon { background: rgba(232,160,32,0.15); }
.problem-item.prob-result .prob-icon i { color: var(--primary); }
.prob-text h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.prob-text p { font-size: 13px; color: rgba(255,255,255,0.6); }

/* ===== SOLUTION ===== */
.solution-wrap {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 56px;
  align-items: center;
  margin-top: 48px;
}
.solution-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.solution-img img { width: 100%; height: 380px; object-fit: cover; }
.solution-lead {
  font-size: 17px;
  color: var(--text);
  margin-bottom: 24px;
  line-height: 1.7;
}
.solution-lead strong { color: var(--primary-dark); }
.solution-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}
.solution-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
}
.solution-list li i { color: #27ae60; font-size: 18px; flex-shrink: 0; }
.solution-list strong { color: var(--primary-dark); }

.schedule-box {
  background: linear-gradient(135deg, #fff9ef, #fff3d6);
  border: 2px solid rgba(232,160,32,0.3);
  border-radius: var(--radius);
  padding: 24px;
}
.schedule-box h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.schedule-box h4 i { color: var(--primary); }
.schedule-items { display: flex; flex-direction: column; gap: 8px; }
.sch-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}
.sch-item .day {
  background: var(--primary);
  color: #fff;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.sch-item .topic { color: var(--text); font-weight: 500; }

/* ===== VIDEO ===== */
.video-section { text-align: center; }
.video-wrap {
  max-width: 800px;
  margin: 40px auto 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 3px solid rgba(232,160,32,0.3);
}
.video-wrap video {
  width: 100%;
  display: block;
  background: #000;
}

/* ===== AUDIO ===== */
.audio-section { text-align: center; }
.audio-section .section-title,
.audio-section .section-label,
.audio-section .section-desc { text-align: center; }
.audio-players {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}
.audio-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 2px solid transparent;
}
.audio-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}
.audio-cover {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.audio-cover img { width: 100%; height: 100%; object-fit: cover; }
.audio-play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
}
.audio-play-overlay i { font-size: 48px; color: var(--primary-light); }
.audio-info { padding: 20px; }
.audio-cat {
  display: inline-block;
  background: rgba(232,160,32,0.12);
  color: var(--primary-dark);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.audio-info h4 { font-size: 16px; font-weight: 700; color: var(--secondary); margin-bottom: 4px; }
.audio-info p { font-size: 13px; color: var(--text-light); margin-bottom: 14px; }
.custom-audio {
  width: 100%;
  border-radius: 50px;
  outline: none;
}
.custom-audio::-webkit-media-controls-panel { background: #fff9ef; }

/* ===== BOOK LIST ===== */
.booklist { text-align: center; }
.book-covers-row {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 32px 0;
  flex-wrap: wrap;
}
.book-covers-row img {
  height: 140px;
  width: auto;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.book-covers-row img:hover { transform: scale(1.06) rotate(-1deg); }

.tab-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0 0 32px;
}
.tab-btn {
  background: #fff;
  border: 2px solid #e0d8cc;
  color: var(--text-light);
  padding: 10px 22px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  display: flex;
  align-items: center;
  gap: 7px;
}
.tab-btn:hover, .tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(232,160,32,0.3);
}
.tab-content { display: none; text-align: left; }
.tab-content.active { display: block; }

.book-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}
.book-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 8px;
  transition: var(--transition);
  border-left: 3px solid transparent;
}
.book-item:hover {
  background: #fff9ef;
  border-left-color: var(--primary);
}
.book-item i { color: var(--primary); font-size: 14px; margin-top: 3px; flex-shrink: 0; }
.book-item span { font-size: 14px; font-weight: 600; color: var(--secondary); display: block; }
.book-item small { font-size: 12px; color: var(--text-light); display: block; margin-top: 2px; }

/* ===== BEFORE / AFTER ===== */
.beforeafter { text-align: center; }
.ba-col ul { text-align: left; }
.ba-col ul li { text-align: left; }
.ba-grid {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-top: 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.ba-col {
  flex: 1;
  padding: 40px 36px;
}
.ba-col.before { background: #fff0f0; }
.ba-col.after { background: #f0fff4; }
.ba-header {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.ba-col.before .ba-header { color: var(--accent); }
.ba-col.before .ba-header i { color: var(--accent); }
.ba-col.after .ba-header { color: #27ae60; }
.ba-col.after .ba-header i { color: #27ae60; }
.ba-col ul { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.ba-col ul li {
  font-size: 15px;
  padding-left: 20px;
  position: relative;
  color: var(--text);
  line-height: 1.5;
}
.ba-col.before ul li::before { content: '✗'; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.ba-col.after ul li::before { content: '✓'; position: absolute; left: 0; color: #27ae60; font-weight: 700; }
.ba-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 0 24px;
  color: #fff;
  font-size: 28px;
}

/* ===== RESULTS ===== */
.results { text-align: center; }
.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.result-item {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(232,160,32,0.2);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  transition: var(--transition);
}
.result-item:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(232,160,32,0.5);
  transform: translateY(-4px);
}
.result-icon {
  width: 56px; height: 56px;
  background: rgba(232,160,32,0.15);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.result-icon i { font-size: 22px; color: var(--primary-light); }
.result-item h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.result-item p { font-size: 13px; color: rgba(255,255,255,0.6); }

/* ===== TESTIMONIALS ===== */
.testimonials { text-align: center; }
.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.testi-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  text-align: left;
  position: relative;
  border: 2px solid transparent;
  transition: var(--transition);
}
.testi-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.testi-card.featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, #fff9ef, #fff5d9);
}
.testi-card.featured::before {
  content: '⭐ NỔI BẬT';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 50px;
  white-space: nowrap;
  letter-spacing: 1px;
}
.testi-card::after {
  content: '"';
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 80px;
  color: rgba(232,160,32,0.12);
  font-family: Georgia, serif;
  line-height: 1;
}
.testi-stars { color: #f39c12; font-size: 18px; margin-bottom: 14px; letter-spacing: 2px; }
.testi-card p { font-size: 14px; color: var(--text); line-height: 1.7; margin-bottom: 20px; font-style: italic; }
.testi-author { font-size: 13px; }
.testi-author strong { color: var(--secondary); font-weight: 700; }
.testi-author span { color: var(--text-light); }

/* ===== PRICING ===== */
.pricing { text-align: center; }
.pricing-box {
  background: linear-gradient(135deg, var(--secondary), #0a2744);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-top: 40px;
}
.pricing-badge-top {
  background: linear-gradient(90deg, var(--accent), #c0392b);
  color: #fff;
  padding: 14px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.pricing-content {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 0;
}
.pricing-left {
  padding: 40px 36px;
  border-right: 1px solid rgba(255,255,255,0.08);
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: flex-start;
}
.pricing-left img {
  border-radius: var(--radius);
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.pricing-includes h4 {
  color: var(--primary-light);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pricing-includes ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.pricing-includes li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.8);
}
.pricing-includes li i { color: #27ae60; font-size: 15px; }

.pricing-right { padding: 40px 36px; text-align: center; }
.price-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.old-price {
  font-size: 20px;
  color: rgba(255,255,255,0.4);
  text-decoration: line-through;
}
.new-price {
  font-size: 56px;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
}
.discount-tag {
  background: var(--accent);
  color: #fff;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 700;
}
.price-note {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  margin-bottom: 28px;
}
.price-note strong { color: var(--primary-light); }

.countdown-pricing {
  margin-bottom: 28px;
}
.countdown-pricing p {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  margin-bottom: 10px;
}
.countdown-pricing .countdown-wrap { justify-content: center; }

/* Register Form */
.register-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: left;
}
.register-form input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}
.register-form input::placeholder { color: rgba(255,255,255,0.4); }
.register-form input:focus { border-color: var(--primary); background: rgba(255,255,255,0.12); }
.btn-register {
  width: 100%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
  padding: 18px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  animation: pulseAnim 2s infinite;
}
.btn-register:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(232,160,32,0.4);
}
.form-note {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.form-note i { color: #27ae60; }

/* ===== FAQ ===== */
.faq { max-width: 800px; margin-left: auto; margin-right: auto; }
.faq .container { max-width: 800px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; margin-top: 40px; }
.faq-item {
  background: #fff;
  border: 2px solid #e8e0d0;
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); }
.faq-q {
  width: 100%;
  padding: 18px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--secondary);
  cursor: pointer;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: var(--transition);
}
.faq-q:hover { color: var(--primary-dark); }
.faq-q i { transition: transform 0.3s; flex-shrink: 0; color: var(--primary); }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.open .faq-a { max-height: 200px; }
.faq-a p {
  padding: 0 24px 18px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== FINAL CTA ===== */
.final-cta { text-align: center; }
.final-img {
  width: 300px;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin: 0 auto 32px;
  box-shadow: var(--shadow-lg);
}
.final-cta h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.highlight-red { color: var(--accent); }
.final-cta p {
  font-size: 17px;
  color: rgba(255,255,255,0.65);
  max-width: 600px;
  margin: 0 auto 36px;
}
.final-note {
  margin-top: 16px !important;
  font-size: 14px !important;
  color: rgba(255,255,255,0.5) !important;
}
.final-note strong { color: var(--primary-light); }

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 48px 0 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-light);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-logo i { color: var(--primary); }
.footer-brand p { font-size: 14px; line-height: 1.7; }
.footer-links h5 { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 14px; text-transform: uppercase; letter-spacing: 1px; }
.footer-links p { font-size: 14px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.footer-links p i { color: var(--primary); }
.footer-bottom { text-align: center; }
.footer-bottom p { font-size: 13px; margin-bottom: 8px; }
.footer-bottom a { color: var(--primary-light); }
.disclaimer { font-size: 11px !important; color: rgba(255,255,255,0.3) !important; max-width: 700px; margin: 0 auto; }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal-box {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  max-width: 460px;
  width: 100%;
  text-align: center;
  animation: modalIn 0.3s ease;
}
@keyframes modalIn {
  from { transform: scale(0.85); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.modal-icon { font-size: 60px; color: #27ae60; margin-bottom: 16px; }
.modal-box h3 { font-size: 24px; font-weight: 800; color: var(--secondary); margin-bottom: 12px; }
.modal-box p { font-size: 15px; color: var(--text-light); line-height: 1.7; margin-bottom: 28px; }
.btn-modal-close {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 12px 36px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
}
.btn-modal-close:hover { background: var(--primary-dark); }

/* ===== btn-register dùng như link (thay form) ===== */
.btn-register {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  text-decoration: none;
  padding: 18px 24px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  animation: pulseAnim 2s infinite;
  border: none;
}
.btn-register:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(232,160,32,0.4);
  color: #fff;
}

/* ===== FOOTER compact ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 28px 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .results-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { gap: 36px; }
}

@media (max-width: 860px) {
  /* Hero: stack thành 1 cột */
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero-text { text-align: center; }
  .hero-text .badge-top { display: inline-block; }
  .hero-stats { justify-content: center; }
  .hero-right { max-width: 480px; margin: 0 auto; width: 100%; }
  .hero-cta-box .btn-hero { font-size: 14px; padding: 14px 20px; }
  /* Bỏ nowrap trên mobile để tránh tràn màn hình */
  .hero-line-nowrap { white-space: normal; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .three-col { grid-template-columns: 1fr; }
  .problems-grid { grid-template-columns: 1fr; }
  .solution-wrap { grid-template-columns: 1fr; gap: 32px; }
  .solution-img { display: none; }
  .audio-players { grid-template-columns: 1fr; }
  .book-list-grid { grid-template-columns: 1fr; padding: 20px; }
  .ba-grid { flex-direction: column; }
  .ba-arrow { padding: 16px; transform: rotate(90deg); }
  .results-grid { grid-template-columns: 1fr 1fr; }
  .testi-grid { grid-template-columns: 1fr; }
  .pricing-content { grid-template-columns: 1fr; }
  .pricing-left { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .hero-stats { gap: 16px; flex-wrap: wrap; }
  .cd-box { min-width: 50px; padding: 8px 10px; }
  .cd-box span { font-size: 20px; }
  .tab-buttons { gap: 8px; }
  .tab-btn { padding: 9px 16px; font-size: 13px; }
}

@media (max-width: 480px) {
  .price-sale { font-size: 32px; }
  .btn-hero { font-size: 13px; padding: 13px 18px; }
  .ba-arrow { display: none; }
  .results-grid { grid-template-columns: 1fr; }
  .countdown-wrap { gap: 4px; }
  .tab-buttons { gap: 5px; }
  .tab-btn { padding: 7px 12px; font-size: 12px; }
  .hero-book-img img { height: 200px; }
  .hero-cta-box { padding: 16px; }
  .btn-register { font-size: 14px; padding: 15px 16px; }
}