/* ==========================================================================
   TỚ BIẾT TỚ AN TOÀN — CHA MẸ DÁM NÓI™ & MS.RIGHT
   BẢN QUYỀN HỆ THỐNG THƯƠNG HIỆU & BRAND GUIDELINES (VAULT 2026)
   Font: Be Vietnam Pro + Fraunces Italic
   Palette: Kem ấm (#F3E5D8), Trắng ngà (#FBF2E9), Cam đất (#D96610),
            Xanh rừng sâu (#2F3724), Xanh xô thơm (#878C67), Vàng nghệ (#F4B52B)
   ========================================================================== */

:root {
  /* Brand Color Palette */
  --cream: #F3E5D8;
  --cream-soft: #FAF4EE;
  --ivory: #FBF2E9;
  --white: #FFFFFF;
  --terracotta: #D96610;
  --terracotta-dark: #B8530B;
  --terracotta-light: #FFEDE0;
  --forest: #2F3724;
  --forest-soft: #3E4930;
  --sage: #878C67;
  --sage-light: #EEF1E6;
  --yellow: #F4B52B;
  --yellow-light: #FFF7DF;
  --coffee: #62470D;
  --muted: #5C5444;
  --border: rgba(47, 55, 36, 0.12);
  --border-light: rgba(47, 55, 36, 0.06);

  /* Typography */
  --font-main: 'Be Vietnam Pro', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: 'Fraunces', Georgia, serif;

  /* UI Tokens */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 9999px;

  --shadow-sm: 0 2px 8px rgba(47, 55, 36, 0.05);
  --shadow-card: 0 8px 24px rgba(47, 55, 36, 0.08);
  --shadow-lift: 0 16px 36px rgba(47, 55, 36, 0.14);
  --shadow-btn: 0 6px 18px rgba(217, 102, 16, 0.28);
  --shadow-btn-hover: 0 10px 26px rgba(217, 102, 16, 0.40);

  --max-w: 1160px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--cream);
  color: var(--forest);
  line-height: 1.68;
  font-size: 1.05rem;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

/* Typography Utilities */
h1, h2, h3, h4, h5 {
  font-family: var(--font-main);
  color: var(--forest);
  line-height: 1.25;
  font-weight: 800;
  text-wrap: balance;
}

.serif-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
}

.accent {
  color: var(--terracotta);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-muted { color: var(--muted); }
.nowrap { white-space: nowrap; }

/* Layout Wrappers */
.container {
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container-narrow {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 54px 0;
  position: relative;
}

.section-cream-soft {
  background-color: var(--cream-soft);
}

.section-ivory {
  background-color: var(--ivory);
}

.section-forest {
  background-color: var(--forest);
  color: var(--cream);
}
.section-forest h2, .section-forest h3, .section-forest h4 {
  color: var(--ivory);
}

/* Section Header Component */
.section-header {
  text-align: center;
  margin-bottom: 34px;
}

/* Tiêu đề phần "Hình thức học" — gọn 1 dòng trên desktop */
#how-it-works .section-title {
  font-size: clamp(1.7rem, 2.6vw, 2.1rem);
}
@media (min-width: 993px) {
  #how-it-works .section-title {
    white-space: nowrap;
  }
}

/* Phụ đề một số phần — gọn 1 dòng trên desktop */
@media (min-width: 993px) {
  #instructor .section-subtitle {
    max-width: none;
    white-space: nowrap;
    font-size: 1.06rem;
  }
  #pricing .section-subtitle {
    max-width: none;
    white-space: nowrap;
    font-size: 1.02rem;
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--terracotta);
  background: rgba(217, 102, 16, 0.10);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.eyebrow.eyebrow-sage {
  color: var(--sage);
  background: var(--sage-light);
}

.eyebrow.eyebrow-forest {
  color: var(--ivory);
  background: rgba(251, 242, 233, 0.14);
}

.section-title {
  font-size: clamp(1.85rem, 3.4vw, 2.7rem);
  font-weight: 800;
  margin-bottom: 18px;
}

.section-subtitle {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
}

.section-forest .section-subtitle {
  color: rgba(251, 242, 233, 0.78);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.02rem;
  padding: 14px 30px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--terracotta);
  color: var(--white);
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  background-color: var(--terracotta-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
}

.btn-secondary {
  background-color: var(--forest);
  color: var(--ivory);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background-color: var(--forest-soft);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.btn-outline {
  background-color: transparent;
  color: var(--forest);
  border: 1.5px solid rgba(47, 55, 36, 0.28);
}
.btn-outline:hover {
  border-color: var(--terracotta);
  color: var(--terracotta);
  background-color: rgba(217, 102, 16, 0.05);
  transform: translateY(-2px);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--ivory);
  border: 1.5px solid rgba(251, 242, 233, 0.35);
}
.btn-outline-white:hover {
  border-color: var(--yellow);
  color: var(--yellow);
  background-color: rgba(244, 181, 43, 0.1);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 17px 36px;
  font-size: 1.12rem;
  border-radius: var(--radius-md);
}

.btn-pill {
  border-radius: var(--radius-pill);
}

/* Header & Sticky Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(243, 229, 216, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(98, 71, 13, 0.10);
  transition: var(--transition);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
}

.brand-badge {
  display: flex;
  flex-direction: column;
}
.brand-badge .brand-name {
  font-weight: 800;
  font-size: 0.98rem;
  color: var(--forest);
  letter-spacing: -0.01em;
}
.brand-badge .brand-tagline {
  font-size: 0.72rem;
  color: var(--terracotta);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--forest);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--terracotta);
  transition: width 0.2s ease;
}
.nav-link:hover {
  color: var(--terracotta);
}
.nav-link:hover::after {
  width: 100%;
}

.nav-link.highlight {
  color: var(--terracotta);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: none;
  padding: 8px;
  font-size: 1.5rem;
  color: var(--forest);
}

/* Hero Section */
.hero {
  padding: 56px 0 76px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 52px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--forest);
  color: var(--ivory);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}
.hero-pill .dot {
  width: 8px;
  height: 8px;
  background: var(--yellow);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--forest);
}

.hero-title .accent-block {
  color: var(--terracotta);
  display: block;
}

.hero-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.22rem;
  color: var(--forest-soft);
  margin-bottom: 14px;
  line-height: 1.45;
  border-left: 3px solid var(--terracotta);
  padding-left: 14px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 30px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 32px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 14px;
  border-top: 1px dashed rgba(47, 55, 36, 0.15);
}

.hero-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--forest-soft);
}

.hero-badge-icon {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: rgba(217, 102, 16, 0.14);
  color: var(--terracotta);
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  font-weight: 800;
  flex-shrink: 0;
}

.hero-visual {
  position: relative;
}

.hero-card-frame {
  position: relative;
  border-radius: var(--radius-xl);
  background: var(--ivory);
  padding: 16px;
  border: 1px solid rgba(47, 55, 36, 0.08);
  box-shadow: var(--shadow-lift);
}

.hero-main-img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  transition: transform 0.4s ease;
}
.hero-card-frame:hover .hero-main-img {
  transform: scale(1.015);
}

.hero-mascot-badge {
  position: absolute;
  bottom: -22px;
  right: -16px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--white);
  padding: 10px 18px 10px 14px;
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 28px rgba(47, 55, 36, 0.16);
  border: 1px solid rgba(47, 55, 36, 0.08);
  z-index: 3;
}
.hero-mascot-badge img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}
.hero-mascot-text {
  display: flex;
  flex-direction: column;
}
.hero-mascot-text .title {
  font-weight: 800;
  font-size: 0.84rem;
  color: var(--forest);
}
.hero-mascot-text .desc {
  font-size: 0.72rem;
  color: var(--terracotta);
  font-weight: 600;
}

/* Empathy & Problem Section */
.empathy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 36px;
}

.empathy-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
}
.empathy-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(217, 102, 16, 0.25);
}

.card-icon-pill {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--cream);
  color: var(--terracotta);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.empathy-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--forest);
}

.empathy-card p {
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.6;
}

/* Quote Callout Banner */
.quote-banner {
  background: linear-gradient(135deg, var(--forest) 0%, var(--forest-soft) 100%);
  color: var(--ivory);
  border-radius: var(--radius-xl);
  padding: 44px 36px;
  margin: 54px 0 20px;
  text-align: center;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}
.quote-banner::before {
  content: "“";
  font-family: var(--font-serif);
  position: absolute;
  left: 24px;
  top: -10px;
  font-size: 9rem;
  color: rgba(251, 242, 233, 0.06);
  line-height: 1;
  pointer-events: none;
}
.quote-banner h3 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  font-weight: 500;
  color: var(--ivory);
  line-height: 1.45;
  margin-bottom: 14px;
}
.quote-banner p {
  font-size: 1rem;
  color: rgba(251, 242, 233, 0.85);
  max-width: 680px;
  margin: 0 auto;
}

/* Transformation Pillars */
.transform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 40px;
}

.transform-card {
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  box-shadow: var(--shadow-card);
}
.transform-card.for-teen {
  background: var(--white);
  border: 1.5px solid rgba(217, 102, 16, 0.2);
}
.transform-card.for-parents {
  background: var(--ivory);
  border: 1.5px solid rgba(135, 140, 103, 0.3);
}

.transform-card .card-tag {
  display: inline-block;
  font-weight: 800;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}
.transform-card.for-teen .card-tag {
  background: rgba(217, 102, 16, 0.14);
  color: var(--terracotta);
}
.transform-card.for-parents .card-tag {
  background: rgba(135, 140, 103, 0.22);
  color: var(--forest);
}

.transform-card h3 {
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.transform-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.transform-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.96rem;
  color: var(--forest-soft);
  line-height: 1.55;
}

.transform-list li .check-pill {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 2px;
}
.transform-card.for-teen .check-pill {
  background: var(--terracotta-light);
  color: var(--terracotta);
}
.transform-card.for-parents .check-pill {
  background: var(--sage-light);
  color: var(--forest);
}

/* INTERACTIVE QUIZ SECTION (Thật hay Đồn?) */
.quiz-wrapper {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lift);
  border: 1px solid var(--border-light);
  margin-top: 36px;
}

.quiz-progress-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}

.quiz-step-count {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--terracotta);
}

.quiz-score-badge {
  font-weight: 700;
  font-size: 0.88rem;
  background: var(--cream);
  color: var(--forest);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.quiz-question-box {
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding: 10px 0 20px;
}

.quiz-q-title {
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  font-weight: 800;
  color: var(--forest);
  margin-bottom: 24px;
  line-height: 1.4;
}

.quiz-options {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-bottom: 20px;
}

.quiz-btn {
  padding: 14px 34px;
  font-size: 1.05rem;
  font-weight: 800;
  border-radius: var(--radius-md);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.quiz-btn-true {
  background: var(--sage-light);
  color: var(--forest);
  border: 2px solid var(--sage);
}
.quiz-btn-true:hover {
  background: var(--sage);
  color: var(--white);
}

.quiz-btn-false {
  background: var(--terracotta-light);
  color: var(--terracotta-dark);
  border: 2px solid var(--terracotta);
}
.quiz-btn-false:hover {
  background: var(--terracotta);
  color: var(--white);
}

.quiz-feedback {
  display: none;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  text-align: left;
  margin-top: 10px;
  animation: fadeIn 0.3s ease;
}
.quiz-feedback.is-correct {
  display: block;
  background: var(--sage-light);
  border-left: 4px solid var(--sage);
  color: var(--forest);
}
.quiz-feedback.is-incorrect {
  display: block;
  background: var(--terracotta-light);
  border-left: 4px solid var(--terracotta);
  color: var(--forest);
}

.quiz-feedback-title {
  font-weight: 800;
  font-size: 1.05rem;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.quiz-feedback-text {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--forest-soft);
}

.quiz-nav-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 20px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Curriculum / 6 Modules Timeline Section */
.curriculum-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-top: 48px;
}

.module-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.module-card:hover {
  box-shadow: var(--shadow-lift);
  border-color: rgba(217, 102, 16, 0.2);
}

.module-card.reverse {
  grid-template-columns: 1fr 1fr;
}
.module-card.reverse .module-content {
  order: 2;
}
.module-card.reverse .module-media {
  order: 1;
}

.module-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.8rem;
  color: var(--terracotta);
  background: var(--terracotta-light);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.module-title {
  font-size: clamp(1.4rem, 2.3vw, 1.8rem);
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--forest);
}

.module-sub {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--terracotta);
  margin-bottom: 12px;
}

.module-desc {
  font-size: 0.96rem;
  color: var(--muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.module-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.module-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.94rem;
  color: var(--forest-soft);
  line-height: 1.5;
}

.point-icon {
  color: var(--terracotta);
  font-weight: 800;
  font-size: 0.85rem;
  margin-top: 3px;
  flex-shrink: 0;
}

.module-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--cream);
}
.module-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.module-card:hover .module-media img {
  transform: scale(1.03);
}

/* Journey Flow Callout */
.journey-callout {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  margin-top: 48px;
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
}
.journey-chain {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--forest);
  margin-bottom: 14px;
  line-height: 1.8;
}
.journey-chain .ar {
  color: var(--terracotta);
  margin: 0 4px;
}
.journey-desc {
  font-size: 0.98rem;
  color: var(--muted);
  max-width: 760px;
  margin: 0 auto;
}

/* Social Proof (Workshop & Feedback Galleries) */
.ws-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 36px 0 48px;
}
.ws-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.ws-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}
.ws-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.ws-card figcaption {
  padding: 16px 20px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--forest);
  line-height: 1.45;
}

.fb-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 28px;
}
.fb-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.fb-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}
.fb-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}
.proof-note {
  text-align: center;
  font-size: 0.86rem;
  color: var(--muted);
  margin-top: 24px;
  font-style: italic;
}

/* How It Works Section */
.how-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 48px;
  align-items: center;
}
.how-art {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
  border: 4px solid var(--white);
}
.how-art img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.how-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 28px;
}
.how-list li {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  background: var(--white);
  padding: 18px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.how-list li:hover {
  transform: translateX(4px);
  border-color: rgba(217, 102, 16, 0.3);
}
.how-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--terracotta-light);
  color: var(--terracotta);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.how-info b {
  display: block;
  font-size: 1.05rem;
  color: var(--forest);
  margin-bottom: 4px;
}
.how-info span {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.5;
}

/* Special Parent Workshop Section */
.parent-special-section {
  background: linear-gradient(180deg, var(--ivory) 0%, var(--cream) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.parent-box {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  box-shadow: var(--shadow-lift);
  border: 1.5px solid rgba(135, 140, 103, 0.35);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.parent-keys {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 24px;
}

.key-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.key-num {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--sage);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  flex-shrink: 0;
}

.key-content h4 {
  font-size: 1.12rem;
  margin-bottom: 4px;
}
.key-content p {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.5;
}

.parent-aside {
  align-self: stretch;
  display: flex;
  flex-direction: column;
}
.parent-mascot {
  margin-top: auto;
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: parentDeerFloat 5s ease-in-out infinite;
}
.deer-sign {
  position: relative;
  background: var(--white);
  border: 2px solid var(--terracotta);
  color: var(--forest);
  font-weight: 800;
  font-size: 1.02rem;
  padding: 12px 22px;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(47, 55, 36, 0.14);
  max-width: 92%;
  margin-bottom: 12px;
  z-index: 2;
}
.deer-sign::after {
  content: "";
  position: absolute;
  bottom: -9px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 15px;
  height: 15px;
  background: var(--white);
  border-right: 2px solid var(--terracotta);
  border-bottom: 2px solid var(--terracotta);
}
.parent-mascot img {
  width: 260px;
  max-width: 80%;
  height: auto;
  margin: 0 auto;
  display: block;
  filter: drop-shadow(0 12px 22px rgba(47, 55, 36, 0.2));
}
@keyframes parentDeerFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@media (prefers-reduced-motion: reduce) {
  .parent-mascot img { animation: none; }
}
@media (max-width: 992px) {
  .parent-mascot { display: none; }
}

.parent-aside-card {
  background: var(--cream-soft);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  border: 1px solid var(--border);
  text-align: center;
}
.parent-aside-card .quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--forest);
  margin-bottom: 16px;
  line-height: 1.45;
}
.parent-aside-card .author {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--terracotta);
}

/* Instructor Section */
.instructor-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-lift);
  border: 1px solid var(--border-light);
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 48px;
  align-items: center;
}

.instructor-visual {
  position: relative;
  text-align: center;
}

.instructor-img-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 4px solid var(--ivory);
}
.instructor-img-wrapper img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  object-position: top center;
}

.instructor-title-badge {
  margin-top: 16px;
  display: inline-block;
  background: var(--cream);
  color: var(--forest);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
}

.instructor-info h3 {
  font-size: 2.1rem;
  margin-bottom: 6px;
  color: var(--forest);
}

.instructor-role {
  color: var(--terracotta);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 22px;
}

.instructor-bio {
  font-size: 1.02rem;
  color: var(--forest-soft);
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.instructor-cred {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 8px 0;
}
.instructor-cred li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.96rem;
  color: var(--forest);
}
.instructor-cred li::before {
  content: '✦';
  color: var(--terracotta);
  font-weight: 800;
}

.instructor-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--forest);
  background: var(--cream-soft);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--terracotta);
  margin-top: 10px;
}

/* Pricing & Signup Card Section */
.offer-box {
  background: var(--white);
  border-radius: var(--radius-xl);
  max-width: 780px;
  margin: 0 auto;
  box-shadow: var(--shadow-lift);
  border: 2px solid var(--terracotta);
  overflow: hidden;
  position: relative;
}

.offer-top-badge {
  background: var(--terracotta);
  color: var(--white);
  padding: 12px 24px;
  text-align: center;
  font-weight: 800;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.offer-body {
  padding: 44px 40px;
}

.offer-header {
  text-align: center;
  margin-bottom: 28px;
}
.offer-title {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--forest);
  margin-bottom: 8px;
}
.offer-sub {
  color: var(--muted);
  font-size: 0.95rem;
}

.price-promo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 18px auto 0;
  background: linear-gradient(90deg, var(--terracotta), #e8871f);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  padding: 7px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 16px rgba(217, 102, 16, 0.3);
  text-transform: uppercase;
  animation: promoPulse 1.6s ease-in-out infinite;
}
@keyframes promoPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
@media (prefers-reduced-motion: reduce) {
  .price-promo-badge { animation: none; }
}

.price-row-center {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  margin: 12px 0 28px;
  flex-wrap: wrap;
}
.price-row-center .price-old {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: rgba(92, 84, 68, 0.6);
}
.price-row-center .amount {
  font-size: 3rem;
  font-weight: 900;
  color: var(--terracotta);
  line-height: 1;
}
.price-row-center .unit {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--muted);
}

/* Nút đăng ký — to & nổi bật, hiệu ứng mạnh */
#submitBtn {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 900;
  padding: 20px 26px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  white-space: normal !important;
  line-height: 1.3;
  text-align: center;
  background: linear-gradient(90deg, #d9660f, #f08a1e, #d9660f);
  background-size: 200% auto;
  animation: ctaStrongPulse 1.15s ease-in-out infinite, ctaShine 3s linear infinite;
}
#submitBtn:hover {
  transform: translateY(-2px) scale(1.02);
}
@keyframes ctaStrongPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 10px 26px rgba(217, 102, 16, 0.45); }
  50% { transform: scale(1.04); box-shadow: 0 16px 42px rgba(217, 102, 16, 0.62); }
}
@keyframes ctaShine {
  to { background-position: 200% center; }
}
@media (prefers-reduced-motion: reduce) {
  #submitBtn { animation: none; }
}

.features-grid-inline {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 20px;
  margin-bottom: 36px;
  padding: 24px;
  background: var(--ivory);
  border-radius: var(--radius-lg);
}
.features-grid-inline li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--forest);
}
.features-grid-inline li .ic {
  color: var(--terracotta);
  font-weight: 800;
}

/* Signup Form */
.signup-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--forest);
  margin-bottom: 6px;
}
.field input, .field textarea {
  width: 100%;
  padding: 13px 18px;
  border-radius: var(--radius-md);
  border: 1.5px solid rgba(47, 55, 36, 0.18);
  font-family: inherit;
  font-size: 0.98rem;
  background: var(--cream-soft);
  color: var(--forest);
  transition: var(--transition);
}
.field input:focus, .field textarea:focus {
  border-color: var(--terracotta);
  background: var(--white);
  outline: none;
  box-shadow: 0 0 0 3px rgba(217, 102, 16, 0.15);
}
.field textarea {
  min-height: 80px;
  resize: vertical;
}

.form-err {
  display: none;
  color: #C0392B;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 14px;
  background: rgba(192, 57, 43, 0.1);
  border-radius: var(--radius-sm);
}

/* VietQR Box */
.qr-box {
  display: none;
  background: var(--ivory);
  border: 2px dashed var(--terracotta);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  margin-top: 24px;
  animation: fadeIn 0.35s ease;
}
.qr-box h4 {
  font-size: 1.3rem;
  margin-bottom: 16px;
  color: var(--forest);
}
.qr-box img {
  max-width: 250px;
  margin: 0 auto 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.pay-line {
  font-size: 0.98rem;
  color: var(--forest);
  margin-bottom: 8px;
}
.pay-line b {
  color: var(--terracotta);
}
.qr-note {
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 16px;
  line-height: 1.5;
}

/* Guarantee Badge */
.guarantee-box {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--sage-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-top: 28px;
}
.guarantee-shield {
  width: 42px;
  height: 42px;
  color: var(--forest);
  flex-shrink: 0;
}
.guarantee-box p {
  font-size: 0.9rem;
  color: var(--forest);
  line-height: 1.5;
}

/* FAQ Section */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 36px;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(217, 102, 16, 0.2);
}

.faq-question-btn {
  width: 100%;
  padding: 22px 26px;
  background: transparent;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--forest);
  gap: 16px;
}

.faq-toggle-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--cream);
  color: var(--terracotta);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  background: var(--terracotta);
  color: var(--white);
}

.faq-answer-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.25s ease;
  padding: 0 26px;
}

.faq-item.active .faq-answer-panel {
  max-height: 400px;
  padding: 0 26px 24px 26px;
}

.faq-answer-panel p {
  color: var(--forest-soft);
  font-size: 1rem;
  line-height: 1.65;
}

/* Final CTA Section */
.final-cta {
  background: linear-gradient(135deg, var(--forest) 0%, var(--forest-soft) 100%);
  color: var(--ivory);
  text-align: center;
  padding: 90px 0;
}
.final-cta h2 {
  font-size: clamp(2rem, 3.8vw, 2.9rem);
  color: var(--ivory);
  margin-bottom: 22px;
}
.final-creed {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin: 28px 0 36px;
}
.final-creed span {
  background: rgba(251, 242, 233, 0.12);
  border: 1px solid rgba(251, 242, 233, 0.25);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--yellow);
}
.final-cta p {
  font-size: 1.12rem;
  color: rgba(251, 242, 233, 0.88);
  max-width: 660px;
  margin: 0 auto 36px;
}
.final-cta-btns {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: #232A1B;
  color: rgba(251, 242, 233, 0.7);
  padding: 60px 0 32px;
  border-top: 1px solid rgba(251, 242, 233, 0.08);
  font-size: 0.95rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand h4 {
  color: var(--ivory);
  font-size: 1.35rem;
  margin-bottom: 10px;
}
.footer-brand p {
  max-width: 380px;
  line-height: 1.6;
  margin-bottom: 16px;
}
.footer-brand .quote-small {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--yellow);
  font-size: 0.92rem;
}

.footer-col h5 {
  color: var(--ivory);
  font-size: 1.05rem;
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a:hover {
  color: var(--terracotta);
}

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid rgba(251, 242, 233, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.88rem;
}

/* Quick Floating Bar for Mobile/Tablet */
.floating-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(251, 242, 233, 0.96);
  backdrop-filter: blur(10px);
  padding: 12px 20px;
  box-shadow: 0 -4px 16px rgba(47, 55, 36, 0.12);
  z-index: 90;
  border-top: 1px solid var(--border);
}
.floating-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 500px;
  margin: 0 auto;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual {
    max-width: 540px;
    margin: 0 auto;
  }
  .module-card, .module-card.reverse {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .module-card.reverse .module-content {
    order: 1;
  }
  .module-card.reverse .module-media {
    order: 2;
  }
  .parent-box {
    grid-template-columns: 1fr;
  }
  .instructor-card {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .instructor-img-wrapper img {
    height: 340px;
  }
  .ws-gallery, .fb-gallery {
    grid-template-columns: 1fr;
  }
  .how-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .features-grid-inline {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-cta .btn {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .transform-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .floating-bar {
    display: block;
  }
  body {
    padding-bottom: 60px;
  }
}