/* ==========================================================================
   VINEN NATIONAL ASSOCIATION - OFFICIAL DESIGN SYSTEM & STYLESHEET
   Brand Colors: Royal Navy (#082C63), Flag Red (#C4161C), Gold (#D4AF37)
   Font Family: 'Be Vietnam Pro', sans-serif
   ========================================================================== */

:root {
  --primary: #082c63;
  --primary-dark: #051b3e;
  --primary-light: #0e408d;
  --accent-red: #c4161c;
  --accent-red-hover: #a11116;
  --accent-gold: #d4af37;
  --accent-gold-light: #f7e7a8;
  --bg-main: #ffffff;
  --bg-soft: #f8fafc;
  --bg-card: #ffffff;
  --text-dark: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  --border-color: #e2e8f0;
  --border-focus: #082c63;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(8, 44, 99, 0.08);
  --shadow-lg: 0 12px 32px rgba(8, 44, 99, 0.12);
  --shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.25);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-dark);
  background-color: var(--bg-main);
  line-height: 1.65;
  overflow-x: hidden;
}

/* Universal Form Elements Font Consistency (Fixes Vietnamese Diacritics Glyphs Mismatch in Image 2) */
button, input, textarea, select {
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
}

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

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

.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ==========================================================================
   TOP BAR & HEADER
   ========================================================================== */
.top-notice-bar {
  background: linear-gradient(90deg, #051b3e 0%, #082c63 100%);
  color: #f8fafc;
  padding: 6px 0;
  font-size: 0.80rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.top-notice-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.top-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  color: var(--accent-gold-light);
}

.top-contact {
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-contact a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #e2e8f0;
}

.top-contact a:hover {
  color: var(--accent-gold);
}

/* Site Header - Unified Compact Header (No size shifts on scroll) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

/* Subtle elevation when scrolled without size mutation */
.site-header.scrolled {
  box-shadow: 0 4px 18px rgba(8, 44, 99, 0.09);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.header-brand-crest {
  width: 38px;
  height: 38px;
  background: radial-gradient(circle at top left, #0d3d8a 0%, #020b1c 100%);
  border: 1.5px solid var(--accent-gold);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px rgba(212, 175, 55, 0.25);
  flex-shrink: 0;
}

.header-brand-crest svg {
  width: 20px;
  height: 20px;
}

.header-brand-text {
  display: flex;
  flex-direction: column;
}

.header-brand-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.01em;
  text-transform: uppercase;
  line-height: 1.2;
}

.header-brand-title .text-gold {
  color: var(--accent-gold);
}

.header-brand-sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-desktop-cta {
  padding: 7px 18px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.site-nav a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
  position: relative;
  padding: 4px 0;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-nav a:hover, .site-nav a.active {
  color: var(--accent-red);
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-red);
  transition: var(--transition);
}

.site-nav a:hover::after {
  width: 100%;
}

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

/* Subtle Header Mode Switcher (BOD Preview) */
.header-mode-switch {
  display: inline-flex;
  align-items: center;
  background: #f1f5f9;
  padding: 3px;
  border-radius: 9999px;
  border: 1px solid #cbd5e1;
}

.header-mode-switch .mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #64748b;
  text-decoration: none;
  transition: all 0.2s ease;
  line-height: 1.2;
}

.header-mode-switch .mode-btn:hover {
  color: #0f172a;
}

.header-mode-switch .mode-btn.active {
  background: #082c63;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(8, 44, 99, 0.25);
  font-weight: 700;
}

@media (max-width: 768px) {
  .header-mode-switch .mode-btn {
    padding: 4px 8px;
    font-size: 0.7rem;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-red) 0%, #e52e35 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(196, 22, 28, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #a11116 0%, var(--accent-red) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(196, 22, 28, 0.45);
}

.btn-outline {
  background: transparent;
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn-outline:hover {
  background: #ffffff;
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-navy {
  background: var(--primary);
  color: #ffffff;
}

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

/* Mobile Toggle Button */
.mobile-toggle {
  display: none;
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px 9px;
  transition: var(--transition);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4.5px;
  flex-shrink: 0;
}

.mobile-toggle:hover {
  background: #f1f5f9;
  border-color: var(--primary);
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2.2px;
  background-color: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-toggle.open span:nth-child(1) {
  transform: translateY(6.7px) rotate(45deg);
}

.mobile-toggle.open span:nth-child(2) {
  opacity: 0;
  transform: scale(0);
}

.mobile-toggle.open span:nth-child(3) {
  transform: translateY(-6.7px) rotate(-45deg);
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: #ffffff;
  border-bottom: 3px solid var(--primary);
  box-shadow: 0 15px 35px rgba(8, 44, 99, 0.18);
  z-index: 999;
}

.mobile-nav-drawer.active {
  display: block !important;
  max-height: calc(100vh - 68px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* Desktop Guard: Tuyệt đối không hiển thị Drawer và Toggle trên PC */
@media (min-width: 1081px) {
  .mobile-nav-drawer,
  #mobile-dropdown-nav,
  .mobile-toggle {
    display: none !important;
    visibility: hidden !important;
    height: 0 !important;
    overflow: hidden !important;
    pointer-events: none !important;
  }
}

.mobile-nav-inner {
  padding: 16px 16px 20px;
}

.mobile-nav-mode-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mobile-nav-links a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--primary);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition);
}

.mobile-nav-links a:hover,
.mobile-nav-links a:active {
  background: #f1f5f9;
  color: var(--accent-red);
}

.mobile-nav-footer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mobile-hotline-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--primary);
  text-decoration: none;
  padding: 6px 0;
}

/* ==========================================================================
   HERO SECTION (Optimized for 1-Screen Viewport Harmony on 13.3" & PC)
   ========================================================================== */
.hero-section {
  position: relative;
  background: radial-gradient(circle at top right, #0d387a 0%, #082c63 60%, #041633 100%);
  color: #ffffff;
  padding: clamp(24px, 4vh, 48px) 0 clamp(28px, 4.5vh, 52px) 0;
  overflow: hidden;
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(rgba(212, 175, 55, 0.12) 1px, transparent 1px),
    radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 40px 40px, 20px 20px;
  opacity: 0.7;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 36px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold-light);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 12px;
  white-space: nowrap;
}

.hero-title {
  font-size: clamp(2.0rem, 2.6vw, 2.65rem);
  font-weight: 800;
  line-height: 1.16;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.hero-title .text-gold {
  color: var(--accent-gold);
  background: linear-gradient(135deg, #fce085 0%, #d4af37 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title .text-red {
  color: #ff4d4f;
}

.hero-subtitle {
  font-size: clamp(0.92rem, 1.05vw, 1.04rem);
  color: #e2e8f0;
  margin-bottom: 18px;
  line-height: 1.5;
  max-width: 580px;
}

/* Price Box */
.hero-offer-box {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  margin-bottom: 20px;
  max-width: 520px;
}

.offer-label {
  font-size: 0.78rem;
  color: var(--accent-gold-light);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.offer-price-row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 6px;
}

.offer-original {
  font-size: 1.1rem;
  color: #94a3b8;
  text-decoration: line-through;
}

.offer-current {
  font-size: clamp(1.65rem, 2.2vw, 2.05rem);
  font-weight: 800;
  color: #ffffff;
}

.offer-note {
  font-size: 0.82rem;
  line-height: 1.45;
  color: #cbd5e1;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.hero-buttons .btn {
  padding: 10px 22px;
  font-size: 0.88rem;
}

/* Hero Visual / Card */
.hero-visual {
  position: relative;
}

.hero-main-card {
  position: relative;
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 10px;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-card-img {
  width: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
  aspect-ratio: 16/11;
  max-height: 330px;
}

.hero-floating-badge {
  position: absolute;
  bottom: -12px;
  left: -12px;
  background: #ffffff;
  color: var(--primary);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--accent-red);
  display: flex;
  align-items: center;
  gap: 10px;
}

.floating-icon {
  font-size: 1.6rem;
}

.floating-text strong {
  display: block;
  font-size: 0.92rem;
  color: var(--accent-red);
  font-weight: 800;
}

.floating-text span {
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* Specific Height-Restricted Media Query for 13.3" & 14" Laptops */
@media (max-height: 800px) and (min-width: 992px), (max-width: 1366px) and (min-width: 992px) {
  .hero-section {
    padding: 16px 0 30px 0;
  }
  .hero-grid {
    gap: 26px;
  }
  .hero-kicker {
    padding: 3px 12px;
    font-size: 0.72rem;
    margin-bottom: 8px;
    white-space: nowrap;
  }
  .hero-title {
    font-size: 2.05rem;
    line-height: 1.14;
    margin-bottom: 8px;
  }
  .hero-subtitle {
    font-size: 0.88rem;
    line-height: 1.42;
    margin-bottom: 12px;
  }
  .hero-offer-box {
    padding: 10px 16px;
    margin-bottom: 14px;
  }
  .offer-label {
    font-size: 0.74rem;
    margin-bottom: 2px;
  }
  .offer-price-row {
    margin-bottom: 4px;
    gap: 10px;
  }
  .offer-original {
    font-size: 1.0rem;
  }
  .offer-current {
    font-size: 1.65rem;
  }
  .offer-note {
    font-size: 0.76rem;
    line-height: 1.35;
  }
  .hero-buttons {
    gap: 10px;
  }
  .hero-buttons .btn {
    padding: 8px 18px;
    font-size: 0.82rem;
  }
  .hero-card-img {
    max-height: 275px;
  }
  .hero-floating-badge {
    bottom: -8px;
    left: -8px;
    padding: 8px 12px;
    gap: 8px;
  }
  .floating-icon {
    font-size: 1.3rem;
  }
  .floating-text strong {
    font-size: 0.85rem;
  }
  .floating-text span {
    font-size: 0.70rem;
  }
}

/* ==========================================================================
   PROOF METRICS (4 CỘT)
   ========================================================================== */
.proofs-section {
  margin-top: 0;
  position: relative;
  z-index: 10;
  padding: 36px 0 24px 0;
  background: var(--bg-soft);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.proofs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.proof-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 24px 20px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.proof-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.proof-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-red);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.proof-highlight {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.25;
}

.proof-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   SECTIONS COMMON
   ========================================================================== */
.section {
  padding: 90px 0;
}

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

.section-head {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 55px auto;
}

.section-kicker {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-red);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   GIFT SECTION (SÁCH TẶNG)
   ========================================================================== */
.gift-card {
  background: linear-gradient(135deg, #051b3e 0%, #082c63 100%);
  border-radius: var(--radius-lg);
  color: #ffffff;
  padding: 50px 60px;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 50px;
  align-items: center;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.gift-cover-wrap {
  text-align: center;
}

.gift-book-img {
  max-height: 380px;
  margin: 0 auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  transition: var(--transition);
}

.gift-book-img:hover {
  transform: scale(1.03) rotate(-1deg);
}

.gift-badge {
  display: inline-block;
  background: var(--accent-gold);
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.gift-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: #ffffff;
}

.gift-desc {
  color: #cbd5e1;
  font-size: 1rem;
  margin-bottom: 24px;
  line-height: 1.65;
}

.gift-cta-wrap {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* ==========================================================================
   WHY / NATIONAL MISSION
   ========================================================================== */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.why-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.why-quote {
  border-left: 4px solid var(--accent-red);
  padding: 16px 20px;
  background: #f1f5f9;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  font-style: italic;
  color: var(--primary-dark);
  font-weight: 500;
}

.why-mission-box {
  background: linear-gradient(135deg, rgba(8, 44, 99, 0.05) 0%, rgba(196, 22, 28, 0.05) 100%);
  border: 1px dashed var(--primary);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-top: 24px;
}

.why-mission-box strong {
  display: block;
  font-size: 1.25rem;
  color: var(--accent-red);
  font-weight: 800;
}

/* ==========================================================================
   TARGET AUDIENCE (5 NHÓM)
   ========================================================================== */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.audience-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 30px 24px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.audience-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--primary);
  transition: var(--transition);
}

.audience-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.audience-card:hover::before {
  background-color: var(--accent-red);
  width: 6px;
}

.audience-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: #cbd5e1;
  margin-bottom: 12px;
}

.audience-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}

.audience-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
}

/* ==========================================================================
   OUTCOMES / 5 NĂNG LỰC
   ========================================================================== */
.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.outcome-card {
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.outcome-card:hover {
  background: #ffffff;
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-md);
}

.outcome-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(8, 44, 99, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.outcome-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.outcome-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ==========================================================================
   LECTURERS / BAN GIẢNG HUẤN
   ========================================================================== */
.lecturers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.lecturer-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
}

.lecturer-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-gold);
}

.lecturer-avatar-wrap {
  position: relative;
  background: #e2e8f0;
  aspect-ratio: 1/1;
  overflow: hidden;
}

.lecturer-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.lecturer-card:hover .lecturer-avatar {
  transform: scale(1.05);
}

.lecturer-info {
  padding: 20px 16px;
}

.lecturer-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}

.lecturer-title {
  font-size: 0.82rem;
  color: var(--accent-red);
  font-weight: 700;
  margin-bottom: 8px;
}

.lecturer-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ==========================================================================
   EVENT GALLERY
   ========================================================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-sm);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

/* ==========================================================================
   NATIVE CONVERSION FORM (TRỌNG TÂM CÔNG NGHỆ)
   ========================================================================== */
.form-section {
  background: radial-gradient(circle at top center, #0e408d 0%, #082c63 70%, #051b3e 100%);
  color: #ffffff;
  padding: 100px 0;
}

.form-wrapper {
  max-width: 820px;
  margin: 0 auto;
  background: #ffffff;
  color: var(--text-dark);
  border-radius: var(--radius-lg);
  padding: 50px 60px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.3);
  position: relative;
}

.form-header {
  text-align: center;
  margin-bottom: 35px;
}

.form-header-badge {
  display: inline-block;
  background: rgba(196, 22, 28, 0.1);
  color: var(--accent-red);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.form-header-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 10px;
}

.form-header-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* ==========================================================================
   EXECUTIVE 2-COLUMN APPLICATION PORTAL BOX (IMAGE 1 STANDARD)
   ========================================================================== */
.portal-application-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 60px rgba(8, 44, 99, 0.12);
  border: 1.5px solid var(--border-color);
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
}

/* Left Perks Column */
.portal-perks-side {
  background: linear-gradient(145deg, #082c63 0%, #051b3e 100%);
  color: #ffffff;
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.portal-kicker {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  display: block;
}

.portal-perks-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.25;
  margin-bottom: 16px;
}

.portal-perks-desc {
  color: #cbd5e1;
  font-size: 0.94rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

.portal-perks-desc strong {
  color: var(--accent-gold);
}

.portal-perks-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 28px;
}

.portal-perk-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.portal-perk-icon {
  width: 38px;
  height: 38px;
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid var(--accent-gold);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.portal-perk-item strong {
  display: block;
  font-size: 0.95rem;
  color: #ffffff;
  margin-bottom: 2px;
}

.portal-perk-item span {
  font-size: 0.85rem;
  color: #94a3b8;
  line-height: 1.45;
}

.portal-security-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 18px;
  font-size: 0.82rem;
  color: #94a3b8;
  line-height: 1.5;
}

/* Right Form Side */
.portal-form-side {
  padding: 48px 42px;
  background: #ffffff;
}

.portal-form-head {
  margin-bottom: 24px;
}

.portal-form-title {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}

.portal-form-sub {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.portal-input-wrap {
  margin-bottom: 16px;
}

.portal-input-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.portal-input-label .req {
  color: var(--accent-red);
}

.portal-input-field {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
  color: var(--text-dark);
  background: #f8fafc;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  outline: none;
  box-sizing: border-box;
}

.portal-input-field:focus {
  background: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(8, 44, 99, 0.1);
}

@keyframes fieldHighlightPulse {
  0% {
    border-color: var(--accent-red);
    box-shadow: 0 0 0 0 rgba(196, 22, 28, 0.45);
  }
  50% {
    border-color: var(--accent-red);
    box-shadow: 0 0 0 6px rgba(196, 22, 28, 0.25);
    background-color: #fff9f9;
  }
  100% {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(8, 44, 99, 0.1);
    background-color: #ffffff;
  }
}

.portal-input-field.field-highlight-pulse {
  animation: fieldHighlightPulse 1.5s cubic-bezier(0.16, 1, 0.3, 1);
  border-color: var(--accent-red) !important;
  background-color: #fff9f9 !important;
}

.portal-input-field::placeholder {
  color: #94a3b8;
}

textarea.portal-input-field {
  resize: vertical;
}

.btn-submit-portal {
  width: 100%;
  justify-content: center;
  padding: 16px 24px;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 20px rgba(196, 22, 28, 0.4);
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  text-transform: uppercase;
}

.btn-submit-portal:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(196, 22, 28, 0.5);
}

@media (max-width: 900px) {
  .portal-application-box {
    grid-template-columns: 1fr;
  }
  .portal-perks-side {
    padding: 36px 24px;
  }
  .portal-form-side {
    padding: 36px 24px;
  }
}

@media (max-width: 480px) {
  .portal-perks-title {
    font-size: 1.45rem;
  }
  .portal-form-title {
    font-size: 1.35rem;
  }
  .btn-submit-portal {
    font-size: 0.92rem;
    padding: 14px 16px;
    white-space: normal;
    text-align: center;
  }
}

/* ==========================================================================
   FAQ SECTION
   ========================================================================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-question:hover {
  background-color: var(--bg-soft);
}

.faq-icon {
  font-size: 1.2rem;
  transition: var(--transition);
}

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

.faq-answer {
  padding: 0 24px 20px 24px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--primary-dark);
  color: #e2e8f0;
  padding: 70px 0 30px 0;
  border-top: 4px solid var(--accent-red);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 50px;
  margin-bottom: 50px;
}

.footer-brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

.footer-info-text {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-legal-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--accent-gold-light);
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--accent-gold);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: #94a3b8;
}

.footer-links a:hover {
  color: var(--accent-gold);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 25px;
  text-align: center;
  font-size: 0.82rem;
  color: #64748b;
}

/* ==========================================================================
   SUCCESS MODAL
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 44, 99, 0.7);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 520px;
  width: 100%;
  text-align: center;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
  transform: scale(0.9);
  transition: var(--transition);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto 20px auto;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
}

.modal-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}

.modal-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 25px;
}

/* ==========================================================================
   FLOATING QUICK CONTACT WIDGET (ZALO & HOTLINE) - POSITIONED ABOVE SCROLL
   ========================================================================== */
.floating-contact-stack {
  position: fixed;
  bottom: 78px; /* Directly above .btn-scroll-top (22px + 46px + 10px) */
  right: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 1490;
}

.floating-btn {
  position: relative;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-tap-highlight-color: transparent;
}

/* Zalo Button (Blue gradient with bold white mark) */
.btn-zalo {
  background: linear-gradient(135deg, #0084ff 0%, #0068ff 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 104, 255, 0.38);
  border: 1.5px solid rgba(255, 255, 255, 0.6);
}

.btn-zalo:hover {
  transform: translateY(-3px) scale(1.08);
  box-shadow: 0 8px 22px rgba(0, 104, 255, 0.55);
}

.btn-zalo .zalo-label {
  font-family: 'Be Vietnam Pro', -apple-system, sans-serif !important;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: -0.02em;
  color: #ffffff;
  line-height: 1;
}

/* Call Button (Red gradient with subtle animated pulse wave) */
.btn-call {
  background: linear-gradient(135deg, #e52e35 0%, #c4161c 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(196, 22, 28, 0.42);
  border: 1.5px solid rgba(255, 255, 255, 0.6);
}

.btn-call:hover {
  transform: translateY(-3px) scale(1.08);
  box-shadow: 0 8px 22px rgba(196, 22, 28, 0.6);
}

@keyframes phonePulseRing {
  0% {
    transform: scale(0.92);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.36);
    opacity: 0.3;
  }
  100% {
    transform: scale(1.68);
    opacity: 0;
  }
}

.btn-call::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(196, 22, 28, 0.45);
  animation: phonePulseRing 2s cubic-bezier(0.25, 1, 0.5, 1) infinite;
  z-index: -1;
  pointer-events: none;
}

@keyframes phoneIconWiggle {
  0%, 88%, 100% { transform: rotate(0); }
  90% { transform: rotate(-12deg); }
  92% { transform: rotate(12deg); }
  94% { transform: rotate(-10deg); }
  96% { transform: rotate(10deg); }
  98% { transform: rotate(0); }
}

.btn-call svg {
  animation: phoneIconWiggle 4.5s ease-in-out infinite;
}

/* Floating Tooltip for Desktop */
.floating-tooltip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: rgba(8, 44, 99, 0.95);
  color: #ffffff;
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.floating-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: transparent transparent transparent rgba(8, 44, 99, 0.95);
}

.floating-btn:hover .floating-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

/* ==========================================================================
   SCROLL TO TOP BUTTON (EXECUTIVE GOLD & NAVY)
   ========================================================================== */
.btn-scroll-top {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, #051b3e 0%, #082c63 100%);
  color: var(--accent-gold);
  border: 1.5px solid var(--accent-gold);
  border-radius: 50%;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25), 0 0 15px rgba(212, 175, 55, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.9);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-tap-highlight-color: transparent;
}

.btn-scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.btn-scroll-top:hover {
  background: var(--accent-gold);
  color: #051b3e;
  border-color: #fff2a6;
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35), 0 0 25px rgba(212, 175, 55, 0.5);
}

.btn-scroll-top:active {
  transform: translateY(-1px) scale(0.96);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (MOBILE FIRST & FLUID LAYOUT)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-kicker, .hero-subtitle, .hero-offer-box {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-visual {
    max-width: 550px;
    margin: 0 auto;
  }
  .proofs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .gift-card {
    grid-template-columns: 1fr;
    padding: 40px 30px;
    text-align: center;
  }
  .gift-cta-wrap {
    justify-content: center;
  }
  .why-grid {
    grid-template-columns: 1fr;
  }
  .lecturers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

/* Tablet & Small Laptop (1080px breakpoint) */
@media (max-width: 1080px) {
  .site-nav, .header-desktop-cta {
    display: none !important;
  }
  .mobile-toggle {
    display: flex !important;
  }
}

@media (max-width: 768px) {
  html, body {
    overflow-x: hidden;
    max-width: 100vw;
  }
  .container {
    padding-left: 16px !important;
    padding-right: 16px !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .top-notice-bar {
    padding: 6px 0;
    font-size: 0.74rem;
  }
  .top-notice-content {
    justify-content: center;
    text-align: center;
    gap: 6px;
  }
  .top-badge {
    text-align: center;
    justify-content: center;
    line-height: 1.4;
  }
  .top-contact {
    display: none;
  }

  /* Balanced Mobile Header */
  .site-header {
    background: rgba(255, 255, 255, 0.98);
  }
  .header-inner {
    height: 56px;
    padding: 0;
  }
  .header-brand {
    gap: 8px;
    max-width: calc(100% - 52px);
  }
  .header-brand-crest {
    width: 34px;
    height: 34px;
  }
  .header-brand-crest svg {
    width: 18px;
    height: 18px;
  }
  .header-brand-title {
    font-size: 0.82rem;
    line-height: 1.18;
  }
  .header-brand-sub {
    font-size: 0.58rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .site-nav, .header-desktop-cta {
    display: none !important;
  }
  .header-right {
    gap: 8px;
  }
  .mobile-toggle {
    display: flex !important;
  }

  /* Symmetrical Centered Hero Section */
  .hero-section {
    padding: 22px 0 32px;
    text-align: center;
    overflow: hidden;
  }
  .hero-grid {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: 20px !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto !important;
  }
  .hero-content {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto !important;
  }
  .hero-kicker {
    margin: 0 auto 10px auto !important;
    font-size: clamp(0.58rem, 2.7vw, 0.70rem) !important;
    text-align: center !important;
    padding: 4px 10px !important;
    white-space: nowrap !important;
    letter-spacing: 0.02em !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .hero-title {
    font-size: clamp(1.5rem, 5.5vw, 1.95rem) !important;
    text-align: center !important;
    line-height: 1.22 !important;
    width: 100% !important;
    margin: 0 auto 10px auto !important;
  }
  .hero-subtitle {
    font-size: 0.88rem !important;
    text-align: center !important;
    margin: 0 auto 16px auto !important;
    max-width: 100% !important;
    line-height: 1.48 !important;
  }
  .hero-offer-box {
    padding: 14px 12px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    margin: 0 auto 16px auto !important;
    text-align: center !important;
  }
  .offer-label {
    text-align: center !important;
    font-size: 0.76rem !important;
  }
  .offer-price-row {
    display: flex !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
    align-items: baseline !important;
    gap: 6px 12px !important;
    margin-bottom: 6px !important;
  }
  .offer-original {
    font-size: 1.05rem !important;
  }
  .offer-current {
    font-size: clamp(1.6rem, 6vw, 1.95rem) !important;
  }
  .offer-note {
    font-size: 0.78rem !important;
    text-align: center !important;
    line-height: 1.45 !important;
  }
  .hero-buttons {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    width: 100% !important;
    gap: 10px !important;
    margin: 0 auto !important;
  }
  .hero-buttons .btn {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 46px !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    padding: 11px 16px !important;
    font-size: 0.88rem !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    text-align: center !important;
  }
  .hero-visual {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto !important;
  }
  .hero-main-card {
    padding: 8px !important;
    border-radius: var(--radius-md) !important;
  }
  .hero-card-img {
    max-height: 230px !important;
    object-fit: cover !important;
  }
  .hero-floating-badge {
    position: relative !important;
    bottom: auto !important;
    left: auto !important;
    margin: -14px auto 0 auto !important;
    max-width: 90% !important;
    padding: 8px 14px !important;
    gap: 8px !important;
    justify-content: center !important;
  }
  .floating-icon {
    font-size: 1.35rem !important;
  }
  .floating-text strong {
    font-size: 0.85rem !important;
  }
  .floating-text span {
    font-size: 0.70rem !important;
  }

  .proofs-section {
    margin-top: 0;
    padding: 24px 0;
  }
  .proofs-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .audience-grid, .outcomes-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .lecturers-grid {
    grid-template-columns: 1fr;
  }
  .form-wrapper {
    padding: 24px 14px;
    border-radius: var(--radius-md);
  }
  .form-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .form-group-full {
    grid-column: span 1;
  }
  .form-input, .form-select, .form-textarea, .form-control {
    font-size: 16px !important; /* Prevents auto-zoom on iOS */
    padding: 13px 14px;
    min-height: 48px;
    width: 100%;
    box-sizing: border-box;
  }
  .btn-submit {
    min-height: 52px;
    font-size: 0.95rem;
    padding: 14px 16px;
    white-space: normal;
  }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .floating-contact-stack {
    bottom: 66px; /* Positioned right above mobile scroll-to-top */
    right: 16px;
    gap: 8px;
  }
  .floating-btn {
    width: 42px;
    height: 42px;
  }
  .btn-zalo .zalo-label {
    font-size: 12px;
  }
  .btn-call svg {
    width: 19px;
    height: 19px;
  }
  .floating-tooltip {
    display: none !important;
  }
  .btn-scroll-top {
    bottom: 16px;
    right: 16px;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 480px) {
  .header-brand-sub {
    display: none;
  }
  .header-brand-title {
    font-size: 0.8rem;
  }
  .hero-title {
    font-size: 1.55rem !important;
  }
  .header-mode-switch .mode-btn {
    padding: 3px 6px;
    font-size: 0.65rem;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .modal-card {
    padding: 24px 14px;
  }
  .modal-icon {
    width: 56px;
    height: 56px;
    font-size: 1.8rem;
  }
  .modal-title {
    font-size: 1.25rem;
  }
}