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

:root {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-light: #94A3B8;
  --card-border: #E2E8F0;
  --accent-orange: #EA580C;
  --accent-orange-hover: #C2410C;
  --accent-orange-light: #FFF7ED;
  --accent-orange-border: #FFEDD5;
  --accent-blue: #2563EB;
  --accent-blue-hover: #1D4ED8;
  --accent-blue-light: #EFF6FF;
  --accent-blue-border: #DBEAFE;
  --accent-green: #10B981;
  --accent-green-light: #ECFDF5;
  --accent-red: #EF4444;
  --font-main: 'Be Vietnam Pro', sans-serif;
  --font-heading: 'Be Vietnam Pro', sans-serif;
  --font-accent: 'Be Vietnam Pro', sans-serif;
  --container-width: 1200px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-orange: 0 10px 25px -5px rgba(234, 88, 12, 0.3), 0 8px 10px -6px rgba(234, 88, 12, 0.3);
  --shadow-blue: 0 10px 25px -5px rgba(37, 99, 235, 0.2), 0 8px 10px -6px rgba(37, 99, 235, 0.2);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 5rem 0;
  position: relative;
}

section:nth-child(even) {
  background-color: var(--bg-secondary);
}

/* Typography & Visual Elements */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.25rem;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  text-align: center;
}

.text-center {
  text-align: center;
}

.highlight-orange {
  color: var(--accent-orange);
}

.highlight-blue {
  color: var(--accent-blue);
}

.font-italic {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 400;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--accent-orange-light);
  border: 1px solid var(--accent-orange-border);
  color: var(--accent-orange);
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}

.section-tag-blue {
  background-color: var(--accent-blue-light);
  border: 1px solid var(--accent-blue-border);
  color: var(--accent-blue);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  padding: 1.125rem 2.5rem;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

.btn-orange {
  background-color: var(--accent-orange);
  color: #FFFFFF;
  box-shadow: var(--shadow-orange);
}

.btn-orange:hover {
  background-color: var(--accent-orange-hover);
  transform: translateY(-2px);
  box-shadow: 0 15px 30px -5px rgba(234, 88, 12, 0.4), 0 10px 15px -6px rgba(234, 88, 12, 0.4);
}

.btn-blue {
  background-color: var(--accent-blue);
  color: #FFFFFF;
  box-shadow: var(--shadow-blue);
}

.btn-blue:hover {
  background-color: var(--accent-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 15px 30px -5px rgba(37, 99, 235, 0.3), 0 10px 15px -6px rgba(37, 99, 235, 0.3);
}

/* [0] Announcement Bar */
.announcement-bar {
  background-color: var(--accent-blue);
  color: #FFFFFF;
  text-align: center;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  font-weight: 600;
  position: relative;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

/* [1] Hero Section */
.hero {
  padding: 6rem 0 5rem;
  text-align: center;
  background: radial-gradient(circle at top, var(--accent-orange-light) 0%, #FFFFFF 60%);
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  max-width: 950px;
  margin: 0 auto 1.5rem;
}

.hero .sub-headline {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 750px;
  margin: 0 auto 2.5rem;
  font-weight: 400;
}

/* [2] Trust Bar & Logos */
.trust-bar {
  padding: 2.5rem 0;
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  background-color: #FFFFFF;
}

.trust-title {
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-light);
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.logo-grid {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.logo-item {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-light);
  opacity: 0.6;
  filter: grayscale(100%);
  transition: var(--transition);
}

.logo-item:hover {
  opacity: 1;
  filter: grayscale(0%);
  color: var(--text-main);
}

/* [3] Pain Section */
.pain-intro {
  max-width: 700px;
  margin: 0 auto 3rem;
  font-size: 1.25rem;
  color: var(--text-muted);
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.pain-card {
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  padding: 2.5rem 2rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.pain-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--accent-red);
  border-top-left-radius: 1rem;
  border-top-right-radius: 1rem;
}

.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pain-icon-wrapper {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background-color: #FEF2F2;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.pain-icon {
  font-size: 1.75rem;
}

.pain-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.pain-card p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* Highlight Box inside Pain Section (Beige/Orange alert box) */
.pain-alert-box {
  background-color: var(--accent-orange-light);
  border: 1px solid var(--accent-orange-border);
  border-radius: 1rem;
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto 3rem;
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  text-align: left;
}

.pain-alert-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.pain-alert-content h4 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.pain-alert-content p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* [4] Before-After Story & VSL */
.story-wrapper {
  max-width: 900px;
  margin: 0 auto;
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 1.5rem;
  padding: 3.5rem;
  box-shadow: var(--shadow-lg);
}

.story-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.story-header h3 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.story-timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.story-step {
  position: relative;
  padding-left: 2.5rem;
}

.story-step::before {
  content: '';
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  bottom: -2.5rem;
  width: 2px;
  background-color: var(--card-border);
}

.story-step:last-child::before {
  display: none;
}

.story-step-dot {
  position: absolute;
  left: 0;
  top: 0.25rem;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background-color: var(--accent-orange);
  border: 3px solid var(--accent-orange-light);
}

.story-step.before .story-step-dot {
  background-color: var(--accent-red);
}

.story-step.after .story-step-dot {
  background-color: var(--accent-green);
}

.story-step-title {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.story-step-desc {
  color: var(--text-muted);
}

/* VSL placeholder (Professional look) */
.vsl-container {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin: 3rem 0;
  border: 1px solid var(--card-border);
  background-image: url('video_thumbnail.png');
  background-size: cover;
  background-position: center;
}

.vsl-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.3), rgba(0,0,0,0.7));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #FFFFFF;
  cursor: pointer;
  z-index: 2;
  transition: var(--transition);
}

.vsl-overlay:hover {
  background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.6));
}

.vsl-play-btn {
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  background-color: var(--accent-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 30px rgba(234, 88, 12, 0.6);
  transition: var(--transition);
}

.vsl-play-btn svg {
  fill: #FFFFFF;
  margin-left: 0.25rem;
}

.vsl-overlay:hover .vsl-play-btn {
  transform: scale(1.1);
  background-color: var(--accent-orange-hover);
}

.vsl-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  padding: 0 2rem;
}

/* [5] How It Works (Clarity 5-parts) */
.how-it-works-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-top: 3.5rem;
}

.how-step {
  text-align: center;
  position: relative;
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  padding: 2.5rem 1.5rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.how-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-orange-border);
}

.how-number {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--accent-orange);
  line-height: 1;
  margin-bottom: 1rem;
  transition: var(--transition);
}

.how-step:hover .how-number {
  color: var(--accent-orange-hover);
  transform: scale(1.05);
}

.how-step h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.how-step p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Tab comparison for Is / Is Not (Clarity block) */
.clarity-comparison {
  margin: 4rem auto 0;
  max-width: 900px;
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 1.5rem;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.clarity-col {
  padding: 3rem 2.5rem;
}

.clarity-col.is {
  border-right: 1px solid var(--card-border);
  background-color: var(--accent-blue-light);
}

.clarity-col.is-not {
  background-color: #FEF2F2;
}

.clarity-col h4 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.clarity-col.is h4 {
  color: var(--accent-blue);
}

.clarity-col.is-not h4 {
  color: #DC2626;
}

.clarity-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.clarity-list li {
  position: relative;
  padding-left: 1.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.clarity-list li::before {
  position: absolute;
  left: 0;
  top: 0.125rem;
  font-size: 1.1rem;
  font-weight: bold;
}

.clarity-col.is li::before {
  content: '✓';
  color: var(--accent-blue);
}

.clarity-col.is-not li::before {
  content: '✕';
  color: #DC2626;
}

/* [6] Features / Inside (FAB + 4 Benefit layers) */
.feature-container {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  margin-top: 3.5rem;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.feature-row:nth-child(even) {
  grid-template-columns: 1.2fr 1fr;
}

.feature-row:nth-child(even) .feature-content {
  grid-column: 2;
}

.feature-row:nth-child(even) .feature-image-box {
  grid-column: 1;
  grid-row: 1;
}

.feature-content h3 {
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
}

.feature-content p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.benefit-pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.benefit-pill {
  background-color: var(--bg-secondary);
  border: 1px solid var(--card-border);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.benefit-pill.active {
  background-color: var(--accent-orange-light);
  border-color: var(--accent-orange-border);
  color: var(--accent-orange);
}

.feature-image-box {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 1.5rem;
  padding: 0;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.feature-illustration {
  font-size: 5rem;
  filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.1));
}

.feature-illustration-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* [7] Emotion / Masters (4 Hormones) */
.emotion-banner {
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  color: #FFFFFF;
  border-radius: 2rem;
  padding: 5rem 4rem;
  margin: 4rem auto 0;
  max-width: 1000px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.emotion-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(234,88,12,0.15) 0%, rgba(0,0,0,0) 70%);
  border-radius: 50%;
}

.emotion-banner-content {
  position: relative;
  z-index: 3;
}

.emotion-banner h2 {
  color: #FFFFFF;
  text-align: left;
}

.emotion-quote {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.5rem;
  line-height: 1.5;
  color: var(--accent-orange-border);
  margin-bottom: 2.5rem;
  border-left: 4px solid var(--accent-orange);
  padding-left: 1.5rem;
}

.emotion-quote-author {
  font-family: var(--font-main);
  font-style: normal;
  font-size: 1rem;
  color: #FFFFFF;
  font-weight: 700;
  margin-top: 0.5rem;
}

.emotion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.emotion-item h4 {
  color: var(--accent-orange);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.emotion-item p {
  color: #94A3B8;
  font-size: 0.9rem;
}

/* [8] Authority Stack (7 sources, 5 golden lines) */
.authority-box {
  max-width: 900px;
  margin: 3.5rem auto 0;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3.5rem;
  align-items: center;
}

.authority-portrait-box {
  position: relative;
}

.authority-portrait {
  width: 100%;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-lg);
  border: 4px solid #FFFFFF;
}

.authority-badge {
  position: absolute;
  bottom: -1rem;
  right: -1rem;
  background-color: var(--accent-blue);
  color: #FFFFFF;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 700;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  box-shadow: var(--shadow-blue);
}

.authority-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.authority-heading {
  font-size: 1.85rem;
  margin-bottom: 0.5rem;
}

.authority-title {
  color: var(--accent-orange);
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.golden-line {
  position: relative;
  padding-left: 1.5rem;
  font-size: 1.05rem;
}

.golden-line::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--accent-orange);
}

.golden-line strong {
  color: var(--text-main);
}

/* [9] Value Stack & Pricing (Decoy system) */
.pricing-section {
  background-color: var(--bg-secondary);
}

.pricing-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.pricing-tab-btn {
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  font-family: var(--font-heading);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.pricing-tab-btn.active {
  background-color: var(--accent-orange);
  color: #FFFFFF;
  border-color: var(--accent-orange);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  align-items: stretch;
}

.pricing-card {
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 1.5rem;
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}



.popular-badge {
  display: inline-block;
  align-self: center;
  background-color: var(--accent-orange);
  color: #FFFFFF;
  padding: 0.25rem 0.75rem;
  border-radius: 0.375rem;
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  margin-bottom: 1rem;
  box-shadow: 0 2px 4px rgba(234, 88, 12, 0.15);
  z-index: 10;
}

.pricing-header {
  text-align: center;
}

.pricing-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.price-box {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.price-box.contact-pricing {
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.price-box.contact-pricing .price-amount.text-price {
  font-size: 1.8rem;
  color: var(--text-main);
  font-weight: 800;
}

/* Package title badge style (Để trong hộp và chính giữa thêm màu sắc) */
.package-title-badge {
  display: inline-block;
  font-size: 1.1rem;
  font-weight: 800;
  padding: 0.4rem 1.25rem;
  border-radius: 9999px; /* Pill shape box */
  margin: 0 auto 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
}

.package-title-badge.badge-blue {
  background-color: #EFF6FF; /* Light blue box */
  color: var(--accent-blue);
  border-color: var(--accent-blue-border);
}

.package-title-badge.badge-amber {
  background-color: #FFFBEB; /* Light amber box */
  color: #D97706; /* Dark amber text */
  border-color: #FDE68A;
}

.package-title-badge.badge-red {
  background-color: #FEF2F2; /* Light red box */
  color: #DC2626; /* Dark red text */
  border-color: #FCA5A5;
}

.package-title-badge.badge-orange-grad {
  background-color: var(--accent-orange-light);
  color: var(--accent-orange);
  border-color: var(--accent-orange-border);
  font-weight: 900;
  background: linear-gradient(135deg, #FFF7ED 0%, #FFEDD5 100%);
}

.price-amount {
  font-size: 2.75rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--text-main);
}

.price-unit {
  color: var(--text-muted);
  font-size: 1rem;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.pricing-features li {
  position: relative;
  padding-left: 1.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-weight: bold;
}

.pricing-card.popular .pricing-features li::before {
  color: var(--accent-orange);
}

/* Value Stack Box (Ồ! effect) */
.value-stack-box {
  background-color: var(--accent-orange-light);
  border: 1px solid var(--accent-orange-border);
  border-radius: 1.5rem;
  padding: 3rem;
  margin: 4rem auto 0;
  max-width: 900px;
  box-shadow: var(--shadow-sm);
}

.value-stack-box h3 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.value-stack-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.value-stack-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--accent-orange-border);
  padding-bottom: 0.75rem;
  font-size: 1rem;
}

.value-stack-total {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  padding-top: 1rem;
  color: var(--text-main);
  border-top: 2px solid var(--accent-orange);
}

/* [10] Guarantee (Risk Reversal L4) */
.guarantee-box {
  max-width: 850px;
  margin: 0 auto;
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 2rem;
  padding: 3.5rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 3rem;
}

.guarantee-seal {
  width: 9rem;
  height: 9rem;
  flex-shrink: 0;
  background-color: var(--accent-orange-light);
  border: 4px dashed var(--accent-orange);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  transform: rotate(-10deg);
  box-shadow: var(--shadow-sm);
}

.seal-text-top {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--accent-orange);
  letter-spacing: 0.1em;
}

.seal-percent {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--accent-orange);
  line-height: 1;
}

.seal-text-bot {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-orange);
}

.guarantee-content h3 {
  font-size: 1.45rem;
  margin-bottom: 1rem;
  color: var(--accent-orange);
}

@media (min-width: 768px) {
  .guarantee-content h3 {
    white-space: nowrap;
  }
}

.guarantee-content p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* [11] Is For / Not For */
.filter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3.5rem;
}

.filter-card {
  border-radius: 1.5rem;
  padding: 3rem;
  background: #FFFFFF;
  border: 1px solid var(--card-border);
}

.filter-card.for {
  background: var(--accent-blue-light);
  border-color: var(--accent-blue-border);
}

.filter-card.not-for {
  background: #FFF5F5;
  border-color: #FED7D7;
}

.filter-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.filter-card.for h3 {
  color: var(--accent-blue);
}

.filter-card.not-for h3 {
  color: var(--accent-red);
}

.filter-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.filter-list li {
  position: relative;
  padding-left: 2rem;
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.filter-list li::before {
  position: absolute;
  left: 0;
  font-size: 1.2rem;
  font-weight: bold;
}

.filter-card.for li::before {
  content: '✓';
  color: var(--accent-blue);
}

.filter-card.not-for li::before {
  content: '✕';
  color: var(--accent-red);
}

/* [12] FAQ Accordion (AREB) */
.faq-wrapper {
  max-width: 800px;
  margin: 3.5rem auto 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.75rem;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.25rem;
  transition: var(--transition);
  color: var(--accent-orange);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background-color: var(--bg-secondary);
}

.faq-answer-content {
  padding: 1.5rem 1.75rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--card-border);
}

.faq-item.active {
  border-color: var(--accent-orange);
  box-shadow: var(--shadow-md);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* [13] Testimonials (SAT CTA) */
.testimonial-section {
  padding-bottom: 2rem;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 3.5rem;
}

.testimonial-card {
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 1.25rem;
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stars {
  color: #FBBF24;
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.testimonial-text {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.975rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--card-border);
  padding-top: 1.25rem;
}

.author-img {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background-color: var(--card-border);
  object-fit: cover;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--text-muted);
}

.author-info h4 {
  font-size: 0.95rem;
  margin-bottom: 0.15rem;
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-light);
}

.author-outcome {
  margin-left: auto;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-green);
  background-color: var(--accent-green-light);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
}

/* [14] Footer & Floating widgets */
footer {
  background-color: #0F172A;
  color: #FFFFFF;
  padding: 4rem 0 2rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.footer-info {
  color: #94A3B8;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: #FFFFFF;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #94A3B8;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-orange);
  padding-left: 0.25rem;
}

.payment-logos {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.payment-badge {
  width: 2.75rem;
  height: 1.75rem;
  background-color: #1E293B;
  border: 1px solid #334155;
  border-radius: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: #94A3B8;
}

.footer-bottom {
  border-top: 1px solid #1E293B;
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #64748B;
  font-size: 0.8rem;
}

/* Sticky CTA Bottom bar */
.sticky-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: #FFFFFF;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
  padding: 0.75rem 1.5rem;
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transform: translateY(100%);
  transition: transform 0.4s ease;
  border-top: 1px solid var(--card-border);
}

.sticky-cta-bar.visible {
  transform: translateY(0);
}

.sticky-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sticky-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background-color: var(--accent-orange-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.sticky-text h4 {
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
}

.sticky-text p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sticky-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sticky-bar-countdown {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-red);
}

.btn-sticky {
  padding: 0.65rem 1.5rem;
  font-size: 0.95rem;
  border-radius: 0.5rem;
}

/* Zalo floating widget */
.zalo-float {
  position: fixed;
  bottom: 5rem;
  right: 2rem;
  z-index: 98;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #0084FF;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  box-shadow: 0 4px 15px rgba(0, 132, 255, 0.4);
  cursor: pointer;
  animation: pulse-zalo 2s infinite;
  transition: var(--transition);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 0.95rem;
  text-decoration: none;
  letter-spacing: 0.5px;
}

.zalo-float:hover {
  transform: scale(1.1);
  background-color: #0072DD;
}

.zalo-icon {
  width: 2.25rem;
  height: 2.25rem;
  fill: #FFFFFF;
}

@keyframes pulse-zalo {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 132, 255, 0.7);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(0, 132, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 132, 255, 0);
  }
}

/* Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.active {
  opacity: 1;
  transform: translateY(0);
}

/* Contact/Registration Form Section */
.contact-section {
  background-color: var(--accent-orange-light);
}

.contact-card {
  max-width: 600px;
  margin: 0 auto;
  background: #FFFFFF;
  border: 1px solid var(--accent-orange-border);
  border-radius: 1.5rem;
  padding: 3rem 2.5rem;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 1.5rem;
  text-align: left;
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.875rem 1.25rem;
  border: 1px solid var(--card-border);
  border-radius: 0.5rem;
  font-family: var(--font-main);
  font-size: 1rem;
  color: var(--text-main);
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.15);
}

/* Responsive Grid/Styles */
@media (max-width: 992px) {
  .how-it-works-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .hero h1 {
    font-size: 2.5rem;
  }
  .authority-box {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
  .authority-portrait-box {
    max-width: 320px;
    margin: 0 auto;
  }
  .feature-row, .feature-row:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .feature-row:nth-child(even) .feature-content {
    grid-column: 1;
  }
  .feature-row:nth-child(even) .feature-image-box {
    grid-column: 1;
    grid-row: 2;
  }
  .clarity-comparison {
    grid-template-columns: 1fr;
  }
  .clarity-col.is {
    border-right: none;
    border-bottom: 1px solid var(--card-border);
  }
  .filter-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  section {
    padding: 3.5rem 0;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .btn {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }
  .pain-alert-box {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .story-wrapper {
    padding: 2rem 1.5rem;
  }
  .emotion-banner {
    padding: 3rem 1.5rem;
  }
  .guarantee-box {
    flex-direction: column;
    text-align: center;
    padding: 2.5rem 1.5rem;
  }
  .guarantee-seal {
    margin: 0 auto;
  }
  .sticky-cta-bar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    gap: 0.5rem;
  }
  .sticky-info {
    display: none;
  }
  .sticky-actions {
    width: 100%;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
  }
  .sticky-bar-countdown {
    font-size: 0.75rem;
    white-space: nowrap;
  }
  .btn-sticky {
    flex-grow: 0;
    padding: 0.45rem 0.75rem;
    font-size: 0.8rem;
    white-space: nowrap;
    width: auto;
  }
  .zalo-float {
    bottom: 4rem !important;
    right: 1.25rem !important;
  }
}

/* Custom Calculator styling */
.calculator-container {
  background-color: var(--accent-blue-light);
  border: 1px solid var(--accent-blue-border);
  padding: 1.5rem;
  border-radius: 1rem;
  margin-bottom: 2rem;
  text-align: left;
}

.calculator-title {
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-blue);
  font-weight: 700;
}

.calculator-inputs-grid {
  margin-bottom: 1.5rem;
}

.calculator-inputs-grid .form-group {
  margin-bottom: 0;
}

.calculator-results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
  border-top: 1px dashed var(--accent-blue-border);
  padding-top: 1.25rem;
}

.calc-result-card {
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.calc-result-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.calc-result-value {
  font-size: 1.1rem;
  font-weight: 700;
}

.calc-result-value.accent-blue {
  color: var(--accent-blue);
}

.calc-result-value.accent-orange {
  color: var(--accent-orange);
}

.calc-result-value.accent-dark {
  color: var(--text-main);
  font-size: 0.9rem;
}

/* Mobile responsive for calculator */
@media (max-width: 600px) {
  .calculator-results-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

/* Feedback Gallery Styling */
.feedback-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.feedback-item-card {
  background-color: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  padding: 0.5rem;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  overflow: hidden;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 280px; /* Uniform height for cards */
}

.feedback-item-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-blue-border);
}

.feedback-img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* Ensures the feedback text is readable and not stretched */
  border-radius: 0.75rem;
  background-color: #F8FAFC; /* Light gray background to fill empty space */
}

/* Lightbox Modal CSS */
.lightbox-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(15, 23, 42, 0.9); /* Dark overlay */
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
}

.lightbox-content {
  margin: auto;
  display: block;
  max-width: 90%;
  max-height: 90vh;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-xl);
  animation: zoomIn 0.3s ease;
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 2.5rem;
  color: #FFFFFF;
  font-size: 3rem;
  font-weight: bold;
  cursor: pointer;
  transition: 0.2s;
}

.lightbox-close:hover {
  color: var(--accent-orange);
}

@keyframes zoomIn {
  from {transform: scale(0.9); opacity: 0;}
  to {transform: scale(1); opacity: 1;}
}

/* Responsive feedback gallery & Mobile optimizations */
@media (max-width: 768px) {
  .feedback-gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  .feedback-item-card {
    height: 220px;
  }
  .announcement-bar {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
  }
  h2 {
    font-size: 1.75rem;
    line-height: 1.3;
    margin-bottom: 1rem;
  }
  .pain-intro {
    font-size: 1rem;
    margin-bottom: 2rem;
  }
  .pain-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .pain-card {
    padding: 2rem 1.5rem;
  }
  .pain-alert-box {
    padding: 1.5rem;
    margin-bottom: 2rem;
  }
  .vsl-title {
    font-size: 0.95rem;
    padding: 0 1rem;
  }
  .vsl-play-btn {
    width: 3.5rem;
    height: 3.5rem;
  }
  .vsl-play-btn svg {
    width: 1.5rem;
    height: 1.5rem;
  }
  .calc-result-value {
    font-size: 1rem;
  }
  .calculator-title {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .feedback-gallery {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 1.65rem;
  }
  .hero .sub-headline {
    font-size: 1rem;
  }
  .hero {
    padding: 4rem 0 3rem;
  }
  .trust-title {
    font-size: 0.75rem;
    letter-spacing: 0.05em;
  }
  .logo-item {
    font-size: 1.1rem;
  }
}