/* ========================================================
   XUEBA ACADEMY (学吧) - DESIGN SYSTEM & STYLESHEET
   Based on Mankai layout + Official Xueba Brand Identity
   ======================================================== */

:root {
  /* Brand Colors from User's Image */
  --primary-red: #C8102E;         /* Đỏ son Crimson chuẩn Xueba */
  --primary-red-hover: #AA0C25;   /* Đỏ sậm khi hover */
  --deep-ruby: #9E0B20;           /* Đỏ ruby chiều sâu nền oval */
  --ribbon-red: #B71C1C;          /* Đỏ dải ruy băng badge */
  --soft-pink: #FFF5F5;           /* Nền thẻ hồng phấn rất nhẹ */
  --border-pink: #FAD2D2;         /* Viền thẻ đỏ hồng thanh nhã */
  --lineart-pink: #F08C94;        /* Nét vẽ cao ốc phác thảo */

  /* Neutral & Dark Palette */
  --charcoal-black: #1A1A1A;      /* Đen than tiêu đề phụ */
  --dark-slate: #2D3748;          /* Đen ghi sang trọng */
  --body-text: #4A5568;           /* Xám chữ nội dung */
  --light-gray: #F8F9FA;          /* Xám nền phụ */
  --border-gray: #E2E8F0;         /* Viền phân cách mờ */
  --white: #FFFFFF;
  --gold-accent: #F59E0B;         /* Vàng kim điểm xuyết */

  /* Shadows & Curves */
  --radius-pill: 999px;
  --radius-card: 18px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(200, 16, 46, 0.05);
  --shadow-card: 0 10px 30px rgba(26, 26, 26, 0.06);
  --shadow-hover: 0 20px 40px rgba(200, 16, 46, 0.12);
  --shadow-pill: 0 4px 14px rgba(200, 16, 46, 0.25);
  
  /* Fonts */
  --font-heading: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Cabin', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--body-text);
  background-color: #FAFAFC;
  background-image: 
    linear-gradient(to right, rgba(200, 16, 46, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(200, 16, 46, 0.025) 1px, transparent 1px);
  background-size: 32px 32px; /* Notebook grid pattern */
  line-height: 1.6;
  overflow-x: hidden;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition-smooth);
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-highlight {
  color: var(--primary-red);
}

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

.text-charcoal {
  color: var(--charcoal-black);
}

.text-white {
  color: var(--white);
}

.text-light {
  color: rgba(255, 255, 255, 0.85);
}

.text-charcoal-light {
  color: #2D3748;
}

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

/* ================= BUTTONS ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-align: center;
  white-space: nowrap;
}

.btn-pill {
  border-radius: var(--radius-pill);
  padding: 13px 28px;
  font-size: 0.95rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-red) 0%, #B71C1C 100%);
  color: var(--white);
  box-shadow: var(--shadow-pill);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 16, 46, 0.35);
  background: linear-gradient(135deg, #E01A39 0%, #C8102E 100%);
}

.btn-outline {
  border: 1.5px solid var(--primary-red);
  color: var(--primary-red);
  background-color: var(--white);
}

.btn-outline:hover {
  background-color: var(--primary-red);
  color: var(--white);
  box-shadow: var(--shadow-pill);
}

.btn-white {
  background-color: var(--white);
  color: var(--primary-red);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.btn-white:hover {
  background-color: var(--soft-pink);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
  font-weight: 800;
}

.btn-sm {
  padding: 9px 20px;
  font-size: 0.88rem;
}

.btn-block {
  width: 100%;
}

/* ================= SECTION HEADINGS ================= */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  margin-bottom: 50px;
}

.section-subtitle {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary-red);
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--charcoal-black);
  line-height: 1.25;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--body-text);
  max-width: 650px;
  margin: 0 auto;
}

/* ================= TOP BAR ================= */
.top-bar {
  background-color: #121620;
  color: #E2E8F0;
  font-size: 0.84rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.badge-fire {
  background-color: var(--primary-red);
  color: var(--white);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 800;
  margin-right: 8px;
}

.top-bar-notice {
  display: flex;
  align-items: center;
}

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

.top-link:hover {
  color: var(--white);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 5px;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
}

.lang-btn {
  cursor: pointer;
  opacity: 0.7;
}

.lang-btn.active {
  opacity: 1;
  color: #FFA4B0;
}

/* ================= MAIN HEADER ================= */
.main-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  z-index: 1000;
  transition: var(--transition-smooth);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.main-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

/* Brand Logo */
.logo-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  padding: 4px 0;
}

.header-logo-img {
  height: 52px;
  width: auto;
  max-width: 170px;
  object-fit: contain;
  display: block;
  transition: transform var(--transition-fast);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.04));
}

.logo-brand:hover .header-logo-img {
  transform: scale(1.04);
}

/* Nav Menu */
.nav-list {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  font-weight: 700;
  color: var(--dark-slate);
  font-size: 0.96rem;
  padding: 8px 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-red);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2.5px;
  background-color: var(--primary-red);
  border-radius: 2px;
}

.nav-item.has-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -15px;
  background-color: var(--white);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  padding: 10px 0;
  min-width: 240px;
  display: none;
  border: 1px solid var(--border-gray);
  z-index: 100;
}

.dropdown-menu li a {
  display: block;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark-slate);
}

.dropdown-menu li a:hover {
  background-color: var(--soft-pink);
  color: var(--primary-red);
}

.nav-item.has-dropdown:hover .dropdown-menu {
  display: block;
  animation: fadeIn 0.2s ease;
}

.mobile-toggle-btn {
  display: none;
  font-size: 1.5rem;
  color: var(--charcoal-black);
}

.mobile-menu {
  display: none;
}

/* ================= HERO SLIDER SECTION (CHUẨN FORM MANKAI: GỌN GÀNG, ĐẸP MẮT) ================= */
.hero-section {
  position: relative;
  overflow: hidden;
  padding: 24px 0 16px;
  background: radial-gradient(circle at 80% 20%, rgba(200, 16, 46, 0.04) 0%, transparent 60%);
}

.hero-slider {
  position: relative;
  min-height: 420px;
}

.hero-slide {
  display: none;
  animation: fadeIn 0.4s ease;
}

.hero-slide.active {
  display: block;
}

.hero-slide-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 30px;
  min-height: 380px;
}

/* Mankai Script Title (Font Cursive Caveat mềm mại như mẫu Mankai) */
.mankai-script-title {
  font-family: 'Caveat', cursive;
  font-size: 2.2rem;
  font-weight: 700;
  color: #D97706;
  line-height: 1.1;
  margin-bottom: 4px;
  letter-spacing: 0.5px;
}

.hero-title-mankai {
  font-family: var(--font-heading);
  font-size: 2.7rem;
  font-weight: 900;
  color: var(--charcoal-black);
  line-height: 1.18;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}

.hero-title-mankai .highlight-word {
  color: var(--primary-red);
  position: relative;
}

.hero-title-mankai .title-sub {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--dark-slate);
}

/* Tagline với motif icon chuẩn Mankai */
.hero-tagline-mankai {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.02rem;
  color: var(--dark-slate);
  line-height: 1.5;
  margin-bottom: 16px;
}

.hero-tagline-mankai p {
  margin: 0;
}

.tagline-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: rgba(200, 16, 46, 0.1);
  color: var(--primary-red);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* 3 Quick Badges (Xếp hàng ngang gọn gàng, không chiếm chiều dọc) */
.mankai-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.mankai-pill-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--white);
  border: 1px solid var(--border-pink);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--dark-slate);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
  transition: var(--transition-smooth);
}

.mankai-pill-item i {
  color: var(--primary-red);
  font-size: 0.9rem;
}

.mankai-pill-item:hover {
  border-color: var(--primary-red);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(200, 16, 46, 0.1);
}

/* CTA Mankai Button */
.hero-cta-mankai {
  display: flex;
  align-items: center;
  gap: 18px;
}

.btn-mankai {
  background-color: var(--white);
  border: 1.5px solid var(--primary-red);
  color: var(--primary-red);
  padding: 10px 24px;
  font-size: 0.95rem;
  font-weight: 800;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 14px rgba(200, 16, 46, 0.1);
  transition: var(--transition-smooth);
  cursor: pointer;
  text-decoration: none;
}

.btn-mankai:hover {
  background-color: var(--primary-red);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200, 16, 46, 0.25);
}

.btn-sub-note {
  font-size: 0.84rem;
  color: #64748B;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.btn-sub-note i {
  color: #10B981;
}

/* ================= HERO VISUAL (ẢNH THẦY TƯ THỰC TẾ) ================= */
.hero-visual-mankai {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 380px;
}

.visual-circle-bg {
  position: absolute;
  width: 310px;
  height: 310px;
  border-radius: 50%;
  background: radial-gradient(circle, #FFE4E8 0%, #FFCCD5 100%);
  z-index: 1;
  box-shadow: 0 10px 40px rgba(200, 16, 46, 0.12);
  right: 40px;
}

.visual-circle-bg.circle-ruby {
  background: radial-gradient(circle, #FEE2E2 0%, #FECACA 100%);
}

.visual-circle-bg.circle-gold {
  background: radial-gradient(circle, #FEF3C7 0%, #FDE68A 100%);
}

.visual-circle-bg.circle-blue {
  background: radial-gradient(circle, #E0E7FF 0%, #C7D2FE 100%);
}

.visual-accent-star {
  position: absolute;
  top: 30px;
  right: 30px;
  color: #F59E0B;
  font-size: 1.3rem;
  z-index: 2;
  animation: floatBounce 3s ease-in-out infinite;
}

.teacher-figure-wrap {
  position: relative;
  z-index: 3;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thay-tu-hero-img {
  max-height: 360px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.12));
  transition: transform 0.4s ease;
}

.teacher-figure-wrap:hover .thay-tu-hero-img {
  transform: scale(1.02);
}

.floating-teacher-pill {
  position: absolute;
  bottom: 8px;
  left: 10px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(200, 16, 46, 0.2);
  border-radius: 14px;
  padding: 8px 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  z-index: 4;
}

.badge-role-tag {
  font-size: 0.68rem;
  font-weight: 800;
  color: var(--primary-red);
  letter-spacing: 0.8px;
  margin-bottom: 2px;
}

.floating-teacher-pill strong {
  display: block;
  font-size: 0.92rem;
  color: var(--charcoal-black);
}

.floating-teacher-pill span {
  font-size: 0.76rem;
  color: #64748B;
}

/* ================= BANNER 2: MODERN OFFICE VISUAL ================= */
.modern-office-visual {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.metrics-floating-card {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1.5px solid var(--border-pink);
  border-radius: 18px;
  padding: 16px 24px;
  width: 100%;
  box-shadow: 0 10px 25px rgba(200, 16, 46, 0.1);
}

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

.metric-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary-red);
  line-height: 1.1;
}

.metric-lbl {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--dark-slate);
}

.metric-sep {
  width: 1px;
  height: 40px;
  background-color: rgba(200, 16, 46, 0.15);
}

.office-avatar-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--white);
  border: 1px solid var(--border-gray);
  border-radius: 16px;
  padding: 14px 20px;
  width: 100%;
  box-shadow: var(--shadow-sm);
}

.office-avatar-card i {
  font-size: 2rem;
  color: var(--primary-red);
  background: rgba(200, 16, 46, 0.08);
  padding: 12px;
  border-radius: 12px;
}

.office-card-info strong {
  display: block;
  font-size: 0.92rem;
  color: var(--charcoal-black);
}

.office-card-info small {
  font-size: 0.78rem;
  color: #64748B;
}

.floating-badge-mentor-mini {
  background: #FFFBEB;
  border: 1px solid #FCD34D;
  border-radius: var(--radius-pill);
  padding: 8px 18px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #B45309;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ================= BANNER 3: SONG SƯ SPLIT VISUAL ================= */
.songsu-split-visual {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: 400px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

.songsu-side {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border: 1.5px solid var(--border-pink);
  border-radius: 16px;
  padding: 18px 12px;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  transition: var(--transition-smooth);
}

.songsu-side:hover {
  transform: translateY(-4px);
  border-color: var(--primary-red);
}

.songsu-avatar-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(200, 16, 46, 0.1);
  color: var(--primary-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin: 0 auto 10px;
}

.side-cn .songsu-avatar-icon {
  background: rgba(217, 119, 6, 0.12);
  color: #D97706;
}

.songsu-side strong {
  display: block;
  font-size: 0.86rem;
  font-weight: 800;
  color: var(--charcoal-black);
  margin-bottom: 4px;
}

.songsu-side span {
  font-size: 0.72rem;
  color: #64748B;
  line-height: 1.35;
  display: block;
}

.songsu-center-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--primary-red);
  font-weight: 900;
  font-size: 0.7rem;
}

.songsu-center-badge i {
  font-size: 1.2rem;
}

.lms-floating-dock {
  grid-column: 1 / -1;
  background: #F8FAFC;
  border: 1px dashed var(--border-pink);
  border-radius: 12px;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-red);
}

/* ================= BANNER 4: TECH RADAR & ASSESSMENT VISUAL ================= */
.assessment-card-visual {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: 390px;
}

.tech-radar-card {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(200, 16, 46, 0.15);
  border-radius: 20px;
  padding: 22px 24px;
  box-shadow: 0 12px 35px rgba(200, 16, 46, 0.12);
}

.radar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid #F1F5F9;
}

.radar-badge {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--primary-red);
  letter-spacing: 0.5px;
}

.radar-score {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 900;
  color: #10B981;
}

.skill-bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}

.skill-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.skill-row span {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--dark-slate);
}

.bar-track {
  width: 100%;
  height: 8px;
  background-color: #F1F5F9;
  border-radius: 6px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 6px;
  background: linear-gradient(90deg, #EF4444 0%, var(--primary-red) 100%);
}

.roadmap-gift-pill {
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 0.76rem;
  font-weight: 700;
  color: #B45309;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Nút CTA Banner 4 Glow nổi bật nhất */
.btn-cta-glow {
  background: linear-gradient(135deg, var(--ribbon-red) 0%, var(--primary-red) 100%);
  color: var(--white);
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 900;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(200, 16, 46, 0.4);
  animation: pulseGlow 2.5s infinite;
}

.btn-cta-glow:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 28px rgba(200, 16, 46, 0.55);
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 4px 18px rgba(200, 16, 46, 0.35);
  }
  50% {
    box-shadow: 0 6px 26px rgba(200, 16, 46, 0.6);
  }
}

.text-fire {
  color: #EF4444;
}

/* Slider Navigation Controls (Mankai: Indicators dạng thanh nằm ngang) */
.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 10px;
}

.slider-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--white);
  color: var(--primary-red);
  border: 1px solid var(--border-pink);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  font-size: 0.82rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.slider-btn:hover {
  background-color: var(--primary-red);
  color: var(--white);
}

.slider-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-dots .dot {
  width: 16px;
  height: 5px;
  border-radius: 4px;
  background-color: rgba(200, 16, 46, 0.25);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.slider-dots .dot.active {
  width: 32px;
  background-color: var(--primary-red);
  box-shadow: 0 2px 8px rgba(200, 16, 46, 0.35);
}

/* Avatar Giảng Viên Thầy Tư trong mục Giáo Viên Top 1 */
.teacher-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: 20px;
}

/* ================= SECTION VỀ XUEBA ================= */
.about-section {
  background-color: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.about-lead {
  font-size: 1.18rem;
  color: var(--charcoal-black);
  margin-bottom: 14px;
  line-height: 1.6;
}

.about-desc {
  font-size: 1.02rem;
  color: var(--body-text);
  margin-bottom: 30px;
}

.about-usps {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 35px;
}

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

.usp-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background-color: var(--soft-pink);
  color: var(--primary-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.usp-item strong {
  display: block;
  font-size: 1.05rem;
  color: var(--charcoal-black);
  margin-bottom: 2px;
}

.usp-item p {
  font-size: 0.94rem;
  color: var(--body-text);
}

.media-frame {
  position: relative;
  background: linear-gradient(135deg, var(--soft-pink) 0%, #FFFFFF 100%);
  border: 2px solid var(--border-pink);
  border-radius: 28px;
  padding: 50px 40px;
  box-shadow: var(--shadow-card);
}

.media-badge {
  position: absolute;
  top: -20px;
  right: 30px;
  background: var(--primary-red);
  color: var(--white);
  padding: 10px 20px;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 8px 20px rgba(200, 16, 46, 0.3);
}

.media-badge strong {
  display: block;
  font-size: 1.4rem;
  line-height: 1.1;
}

.media-badge span {
  font-size: 0.75rem;
}

.media-icon-huge {
  font-size: 3.5rem;
  color: var(--primary-red);
  margin-bottom: 20px;
}

.media-content-box h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--charcoal-black);
  margin-bottom: 12px;
}

.media-content-box p {
  color: var(--body-text);
  margin-bottom: 25px;
}

.sub-badges {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sub-badges span {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark-slate);
}

.sub-badges i {
  color: var(--primary-red);
  margin-right: 8px;
}

/* ================= SECTION KHÓA HỌC ================= */
.courses-section {
  background-color: #FAFAFC;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.course-card {
  background-color: var(--white);
  border: 1.5px solid var(--border-gray);
  border-radius: var(--radius-card);
  padding: 38px 34px;
  box-shadow: var(--shadow-sm);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.course-card:hover {
  border-color: var(--primary-red);
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.course-badge {
  position: absolute;
  top: 24px;
  right: 24px;
  background-color: var(--soft-pink);
  color: var(--primary-red);
  border: 1px solid var(--border-pink);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.course-badge.badge-orange {
  background-color: #FFF7ED;
  color: #EA580C;
  border-color: #FDBA74;
}

.course-badge.badge-dark {
  background-color: #F1F5F9;
  color: #334155;
  border-color: #CBD5E1;
}

.course-title {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--charcoal-black);
  margin-bottom: 4px;
}

.course-tagline {
  font-style: italic;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-red);
  margin-bottom: 16px;
}

.course-desc {
  font-size: 0.98rem;
  color: var(--body-text);
  line-height: 1.6;
  margin-bottom: 20px;
}

.course-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.course-features li {
  font-size: 0.92rem;
  color: var(--dark-slate);
  display: flex;
  align-items: center;
  gap: 10px;
}

.course-features li i {
  color: var(--primary-red);
  font-size: 0.85rem;
}

/* ================= SECTION TRIẾT LÝ GIÁO DỤC ================= */
.philosophy-section {
  padding: 80px 0;
  background: radial-gradient(circle at 50% 50%, #B71C1C 0%, #7F1D1D 100%);
  color: var(--white);
}

.philosophy-box {
  text-align: center;
  max-width: 900px;
}

.philosophy-label {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.15);
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.philosophy-title {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 900;
  margin-bottom: 25px;
}

.philosophy-quote {
  position: relative;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 24px;
  padding: 40px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.quote-icon {
  font-size: 2.2rem;
  color: var(--gold-accent);
  opacity: 0.8;
  margin-bottom: 16px;
}

.philosophy-quote p {
  font-size: 1.15rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 25px;
  font-weight: 400;
}

.quote-author strong {
  display: block;
  font-size: 1rem;
  letter-spacing: 0.5px;
  color: var(--gold-accent);
}

.quote-author span {
  font-size: 0.85rem;
  opacity: 0.8;
}

/* ================= SECTION HỆ THỐNG SMART ================= */
.smart-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.smart-card {
  background-color: var(--white);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-card);
  padding: 30px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.smart-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-pink);
  box-shadow: 0 12px 30px rgba(200, 16, 46, 0.08);
}

.smart-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background-color: var(--soft-pink);
  color: var(--primary-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.smart-body h4 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--charcoal-black);
  margin-bottom: 8px;
}

.smart-body p {
  font-size: 0.92rem;
  color: var(--body-text);
  line-height: 1.55;
}

/* ================= SECTION ĐỘI NGŨ GIÁO VIÊN TOP 1 ================= */
.teachers-section {
  background-color: #B71C1C;
  background-image: radial-gradient(circle at 10% 20%, rgba(200, 16, 46, 0.8) 0%, transparent 60%);
}

.teachers-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
}

.teachers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.teacher-card {
  background-color: var(--white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
  transition: var(--transition-smooth);
}

.teacher-card:hover {
  transform: translateY(-8px);
}

.teacher-avatar-box {
  height: 240px;
  background: linear-gradient(135deg, #FEE2E2 0%, #FFFFFF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 3px solid var(--primary-red);
}

.teacher-avatar-placeholder {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background-color: rgba(200, 16, 46, 0.1);
  color: var(--primary-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
}

.teacher-info {
  padding: 26px 22px;
}

.teacher-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--charcoal-black);
  margin-bottom: 4px;
}

.teacher-role {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary-red);
  margin-bottom: 16px;
}

.teacher-creds {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.teacher-creds li {
  font-size: 0.85rem;
  color: var(--dark-slate);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.4;
}

.teacher-creds li i {
  color: var(--primary-red);
  margin-top: 3px;
  flex-shrink: 0;
}

/* ================= SECTION CON SỐ NỔI BẬT ================= */
.stats-section {
  padding: 40px 0;
  margin-top: -30px;
  position: relative;
  z-index: 10;
}

.stats-box {
  background-color: var(--white);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  padding: 35px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border-pink);
}

.stat-col {
  text-align: center;
  flex: 1;
  padding: 0 10px;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary-red);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--dark-slate);
  line-height: 1.3;
  display: block;
}

.stat-divider {
  width: 1px;
  height: 50px;
  background-color: var(--border-gray);
}

/* ================= SECTION TESTIMONIALS ================= */
.testimonial-cards-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.testimonial-card {
  background-color: var(--white);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-card);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.quote-sign {
  font-size: 1.8rem;
  color: var(--primary-red);
  opacity: 0.3;
  margin-bottom: 12px;
}

.testimonial-text {
  font-style: italic;
  font-size: 0.95rem;
  color: var(--dark-slate);
  line-height: 1.65;
  margin-bottom: 24px;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border-gray);
  padding-top: 16px;
}

.user-avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--soft-pink);
  color: var(--primary-red);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-name {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--charcoal-black);
}

.user-title {
  font-size: 0.78rem;
  color: #718096;
}

/* ================= SECTION ĐỐI TÁC ================= */
.partner-quotes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.partner-quote-card {
  background-color: var(--white);
  border-radius: 16px;
  padding: 26px;
  border: 1px solid var(--border-gray);
  box-shadow: var(--shadow-sm);
}

.quote-icon-sm {
  font-size: 1.2rem;
  color: var(--primary-red);
  margin-bottom: 10px;
}

.partner-quote-card p {
  font-size: 0.92rem;
  color: var(--body-text);
  line-height: 1.6;
  margin-bottom: 18px;
}

.partner-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.partner-badge {
  background-color: #1E293B;
  color: var(--white);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 800;
}

.partner-badge.qtedu-badge {
  background-color: var(--primary-red);
}

.partner-badge.fdi-badge {
  background-color: #0369A1;
}

.partner-author strong {
  display: block;
  font-size: 0.88rem;
  color: var(--charcoal-black);
}

.partner-author small {
  font-size: 0.75rem;
  color: #718096;
}

/* ================= SECTION TIN TỨC ================= */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background-color: var(--white);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-gray);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
}

.news-thumb {
  height: 180px;
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 16px;
}

.news-thumb.thumb-1 {
  background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?auto=format&fit=crop&w=600&q=80') center/cover;
}
.news-thumb.thumb-2 {
  background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('https://images.unsplash.com/photo-1573496359142-b8d87734a5a2?auto=format&fit=crop&w=600&q=80') center/cover;
}
.news-thumb.thumb-3 {
  background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('https://images.unsplash.com/photo-1517245386807-bb43f82c33c4?auto=format&fit=crop&w=600&q=80') center/cover;
}

.news-category {
  background-color: var(--primary-red);
  color: var(--white);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
}

.news-body {
  padding: 22px;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: #718096;
  margin-bottom: 10px;
}

.news-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  line-height: 1.4;
  margin-bottom: 10px;
}

.news-title a:hover {
  color: var(--primary-red);
}

.news-excerpt {
  font-size: 0.88rem;
  color: var(--body-text);
  line-height: 1.5;
}

/* ================= PRE-FOOTER CTA ================= */
.prefooter-cta-section {
  background: linear-gradient(135deg, #FFF1F2 0%, #FFFFFF 100%);
  border-top: 1px solid var(--border-pink);
  border-bottom: 1px solid var(--border-pink);
  padding: 60px 0;
}

.prefooter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.prefooter-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--charcoal-black);
  margin-bottom: 8px;
}

.prefooter-desc {
  font-size: 1.05rem;
  color: var(--body-text);
  max-width: 600px;
}

.prefooter-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

/* ================= FOOTER ================= */
.main-footer {
  background-color: #111827;
  color: #E2E8F0;
  padding: 70px 0 0;
}

.footer-content-grid {
  display: grid;
  grid-template-columns: 1.2fr 1.3fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  margin-bottom: 20px;
}

.footer-logo-card {
  display: inline-flex;
  align-items: center;
  background: #FFFFFF;
  padding: 8px 16px;
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  margin-bottom: 12px;
}

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

.footer-logo-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--white);
  display: block;
}

.footer-logo-sub {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: #F87171;
  display: block;
  margin-bottom: 16px;
}

.footer-brand-desc {
  font-size: 0.9rem;
  color: #94A3B8;
  line-height: 1.6;
  margin-bottom: 24px;
}

.footer-social-links {
  display: flex;
  gap: 12px;
}

.social-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-icon:hover {
  background-color: var(--primary-red);
  transform: translateY(-2px);
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #F87171;
  margin-bottom: 22px;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.88rem;
  color: #CBD5E1;
}

.contact-list li i {
  color: #F87171;
  margin-top: 4px;
}

.contact-list li strong {
  display: block;
  color: var(--white);
}

.footer-links-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav-list a {
  font-size: 0.88rem;
  color: #94A3B8;
}

.footer-nav-list a:hover {
  color: var(--white);
  padding-left: 4px;
}

.footer-bottom {
  padding: 24px 0;
  font-size: 0.82rem;
  color: #64748B;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-terms {
  display: flex;
  gap: 12px;
}

/* ================= MODAL DIALOG ================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

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

.modal-card {
  background-color: var(--white);
  width: 100%;
  max-width: 580px;
  border-radius: 24px;
  padding: 36px;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
  transform: translateY(20px);
  transition: var(--transition-smooth);
}

.modal-overlay.open .modal-card {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 2rem;
  color: #94A3B8;
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--primary-red);
}

.modal-header {
  text-align: center;
  margin-bottom: 24px;
}

.modal-badge {
  display: inline-block;
  background-color: var(--soft-pink);
  color: var(--primary-red);
  border: 1px solid var(--border-pink);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--charcoal-black);
  margin-bottom: 6px;
}

.modal-subtitle {
  font-size: 0.88rem;
  color: var(--body-text);
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group label {
  display: block;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--dark-slate);
  margin-bottom: 6px;
}

.req {
  color: var(--primary-red);
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrap i {
  position: absolute;
  left: 14px;
  color: #94A3B8;
  font-size: 0.95rem;
}

.input-wrap input, .input-wrap select {
  width: 100%;
  padding: 12px 14px 12px 42px;
  border: 1.5px solid var(--border-gray);
  border-radius: 12px;
  font-family: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition-smooth);
}

.input-wrap input:focus, .input-wrap select:focus {
  border-color: var(--primary-red);
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-privacy-note {
  font-size: 0.75rem;
  color: #64748B;
  text-align: center;
  margin-top: 4px;
}

.form-success-message {
  display: none;
  text-align: center;
  padding: 20px 0;
}

.form-success-message.show {
  display: block;
}

.success-icon {
  font-size: 3.5rem;
  color: #10B981;
  margin-bottom: 16px;
}

.form-success-message h4 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--charcoal-black);
  margin-bottom: 8px;
}

.form-success-message p {
  color: var(--body-text);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

/* ================= KEYFRAME ANIMATIONS ================= */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes floatBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ================= SECTION LỘ TRÌNH 58 BUỔI HSK 0-3 ================= */
.curriculum-section {
  background-color: #FFFFFF;
  border-top: 1px solid var(--border-gray);
  border-bottom: 1px solid var(--border-gray);
}

.curriculum-stages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-bottom: 45px;
}

.stage-card {
  background: linear-gradient(145deg, #FFFFFF 0%, #FFF8F8 100%);
  border: 1.5px solid var(--border-pink);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.stage-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-red);
  box-shadow: var(--shadow-hover);
}

.stage-badge {
  display: inline-block;
  align-self: flex-start;
  background-color: var(--soft-pink);
  color: var(--primary-red);
  border: 1px solid var(--border-pink);
  font-size: 0.76rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.stage-badge.stage-badge-orange {
  background-color: #FFF7ED;
  color: #EA580C;
  border-color: #FDBA74;
}

.stage-badge.stage-badge-red {
  background-color: #FEF2F2;
  color: #DC2626;
  border-color: #FCA5A5;
}

.stage-badge.stage-badge-dark {
  background-color: #1E293B;
  color: #F8FAFC;
  border-color: #334155;
}

.stage-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--charcoal-black);
  margin-bottom: 4px;
}

.stage-subtitle {
  font-size: 0.88rem;
  font-style: italic;
  font-weight: 700;
  color: var(--primary-red);
  margin-bottom: 16px;
}

.stage-lessons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--dark-slate);
  margin-bottom: 20px;
  line-height: 1.5;
}

.stage-lessons li strong {
  color: var(--primary-red);
}

.stage-target {
  background-color: var(--white);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 0.88rem;
  color: var(--dark-slate);
  border: 1px dashed var(--border-pink);
}

.stage-target i {
  color: var(--primary-red);
  margin-right: 6px;
}

.stage-target-gold {
  background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
  border-color: #F59E0B;
  color: #92400E;
}

.stage-target-gold i {
  color: #D97706;
}

/* Cấu trúc buổi học 120 phút */
.session-structure-box {
  background: linear-gradient(135deg, #FFF5F5 0%, #FFFFFF 100%);
  border: 2px solid var(--border-pink);
  border-radius: 24px;
  padding: 38px 30px;
  box-shadow: var(--shadow-card);
}

.session-header {
  text-align: center;
  margin-bottom: 28px;
}

.session-header h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--primary-red);
  margin-bottom: 6px;
}

.session-header p {
  color: var(--body-text);
  font-size: 0.95rem;
}

.timeline-steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.step-card {
  background-color: var(--white);
  border: 1px solid var(--border-pink);
  border-radius: 16px;
  padding: 22px 18px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.step-card.highlight {
  border: 2px solid var(--primary-red);
  background: linear-gradient(180deg, #FFFFFF 0%, #FFF1F2 100%);
  box-shadow: 0 8px 24px rgba(200, 16, 46, 0.12);
}

.step-time {
  display: inline-block;
  background-color: var(--primary-red);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

.step-card h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--charcoal-black);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.86rem;
  color: var(--body-text);
  line-height: 1.5;
}

/* ================= SECTION MẠNG LƯỚI 107 TRƯỜNG ĐH ================= */
.partners-uni-section {
  background-color: #FAFAFC;
}

.uni-benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 45px;
}

.uni-benefit-card {
  background-color: var(--white);
  border: 1px solid var(--border-gray);
  border-radius: 16px;
  padding: 26px 20px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: var(--transition-smooth);
}

.uni-benefit-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-red);
  box-shadow: var(--shadow-hover);
}

.benefit-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--soft-pink) 0%, #FEE2E2 100%);
  color: var(--primary-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
}

.uni-benefit-card h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--charcoal-black);
  margin-bottom: 10px;
  line-height: 1.35;
}

.uni-benefit-card p {
  font-size: 0.85rem;
  color: var(--body-text);
  line-height: 1.5;
}

.top-unis-showcase {
  background-color: var(--white);
  border: 1.5px solid var(--border-pink);
  border-radius: 20px;
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
}

.unis-showcase-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-red);
  margin-bottom: 22px;
  letter-spacing: 0.5px;
}

.unis-badges-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.uni-pill {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #334155;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-smooth);
}

.uni-pill:hover {
  background-color: var(--soft-pink);
  border-color: var(--border-pink);
  color: var(--primary-red);
  transform: translateY(-2px);
}

.uni-pill i {
  color: var(--primary-red);
  font-size: 0.8rem;
}

/* Teacher Origin Badge */
.teacher-origin-badge {
  position: absolute;
  bottom: 10px;
  background-color: rgba(26, 26, 26, 0.85);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 6px;
  letter-spacing: 0.4px;
}

.teacher-avatar-box {
  position: relative;
}

/* ================= RESPONSIVE MEDIA QUERIES ================= */

@media (max-width: 1024px) {
  .hero-slide-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    text-align: center;
  }
  .hero-tagline-mankai {
    justify-content: center;
  }
  .mankai-pill-row {
    justify-content: center;
  }
  .hero-cta-mankai {
    justify-content: center;
  }
  .hero-visual-mankai {
    height: 320px;
  }
  .thay-tu-hero-img {
    max-height: 300px;
  }
  .visual-circle-bg {
    right: 50%;
    transform: translateX(50%);
    width: 270px;
    height: 270px;
  }
  .floating-teacher-pill {
    left: 50%;
    transform: translateX(-50%);
    width: max-content;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .curriculum-stages-grid {
    grid-template-columns: 1fr;
  }
  .uni-benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .smart-grid, .teachers-grid, .testimonial-cards-wrapper, .partner-quotes-grid, .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-content-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-logo-img {
    height: 42px;
  }
  .mankai-script-title {
    font-size: 1.8rem;
  }
  .hero-title-mankai {
    font-size: 2rem;
  }
  .hero-title-mankai .title-sub {
    font-size: 1.6rem;
  }
  .hero-visual-mankai {
    height: 260px;
  }
  .thay-tu-hero-img {
    max-height: 250px;
  }
  .visual-circle-bg {
    width: 220px;
    height: 220px;
  }
  .top-bar-notice {
    display: none;
  }
  .top-bar-inner {
    justify-content: flex-end;
  }
  .main-nav {
    display: none;
  }
  .mobile-toggle-btn {
    display: block;
  }
  .mobile-menu.open {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    padding: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-top: 1px solid var(--border-gray);
  }
  .mobile-nav-list li a {
    display: block;
    padding: 12px 0;
    font-weight: 700;
    border-bottom: 1px solid var(--border-gray);
  }
  .hero-title {
    font-size: 2.3rem;
  }
  .courses-grid, .smart-grid, .teachers-grid, .testimonial-cards-wrapper, .partner-quotes-grid, .news-grid, .uni-benefits-grid, .timeline-steps-row {
    grid-template-columns: 1fr;
  }
  .stats-box {
    flex-direction: column;
    gap: 20px;
  }
  .stat-divider {
    display: none;
  }
  .prefooter-inner {
    flex-direction: column;
    text-align: center;
  }
  .footer-content-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-bottom-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}


/* ========================================================
   SUBPAGE STYLING & ENHANCEMENTS
   Hero Banner, Breadcrumbs, Tabs, Comparison, Value Cards
   ======================================================== */

.subpage-hero {
  position: relative;
  background: linear-gradient(135deg, #111425 0%, #1a1e36 50%, #2a1520 100%);
  padding: 120px 0 70px;
  color: #fff;
  overflow: hidden;
  border-bottom: 2px solid rgba(224, 60, 49, 0.2);
}

.subpage-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(224, 60, 49, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.subpage-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 160, 23, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.subpage-hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.breadcrumb-nav a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb-nav a:hover {
  color: #f7a823;
}

.breadcrumb-sep {
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.75rem;
}

.breadcrumb-current {
  color: #f7a823;
  font-weight: 600;
}

.subpage-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(224, 60, 49, 0.2);
  color: #ff857a;
  border: 1px solid rgba(224, 60, 49, 0.4);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 18px;
}

.subpage-title {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 18px;
  color: #ffffff;
}

.subpage-desc {
  font-size: 1.15rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 30px;
}

.subpage-hero-ctas {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Quick Page Navigation Pills */
.subpage-quick-nav {
  background: #ffffff;
  border-bottom: 1px solid #e9ecef;
  padding: 14px 0;
  position: sticky;
  top: 70px;
  z-index: 90;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.quick-nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.quick-nav-link {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #495057;
  background: #f8f9fa;
  text-decoration: none;
  border: 1px solid #dee2e6;
  transition: all 0.25s;
}

.quick-nav-link:hover, .quick-nav-link.active {
  background: #e03c31;
  color: #ffffff;
  border-color: #e03c31;
  box-shadow: 0 4px 12px rgba(224, 60, 49, 0.25);
}

/* Overview USP Strip for Home Page */
.home-usp-strip {
  padding: 70px 0 40px;
  background: #f8faff;
}

.usp-feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.usp-feature-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.usp-feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 18px 40px rgba(224, 60, 49, 0.12);
  border-color: rgba(224, 60, 49, 0.3);
}

.usp-feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #e03c31, #f7a823);
  opacity: 0;
  transition: opacity 0.3s;
}

.usp-feature-card:hover::before {
  opacity: 1;
}

.usp-card-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  background: rgba(224, 60, 49, 0.1);
  color: #e03c31;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
  transition: all 0.3s;
}

.usp-feature-card:hover .usp-card-icon {
  background: #e03c31;
  color: #ffffff;
  transform: scale(1.05);
}

.usp-card-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #1a1e36;
  margin-bottom: 12px;
  line-height: 1.4;
}

.usp-card-desc {
  font-size: 0.92rem;
  color: #6c757d;
  line-height: 1.6;
  margin-bottom: 0;
}

/* Comparison Table */
.comparison-section {
  padding: 80px 0;
  background: #ffffff;
}

.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  border: 1px solid #eaeaea;
  margin-top: 35px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 650px;
}

.comparison-table th {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 800;
  background: #f8f9fa;
  border-bottom: 2px solid #dee2e6;
}

.comparison-table th.col-xueba {
  background: #e03c31;
  color: #ffffff;
  font-size: 1.15rem;
}

.comparison-table td {
  padding: 18px 24px;
  border-bottom: 1px solid #eee;
  font-size: 0.95rem;
  color: #495057;
  vertical-align: top;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table td.col-xueba {
  background: #fff9f8;
  font-weight: 600;
  color: #1a1e36;
  border-left: 2px solid rgba(224, 60, 49, 0.15);
  border-right: 2px solid rgba(224, 60, 49, 0.15);
}

.comparison-table .feat-icon-good {
  color: #28a745;
  margin-right: 8px;
}

.comparison-table .feat-icon-bad {
  color: #dc3545;
  margin-right: 8px;
}

/* Value & Mission Cards */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}

.value-card {
  background: #fdfefe;
  border: 1px solid #eaeef4;
  border-radius: 16px;
  padding: 32px 26px;
  transition: all 0.3s;
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.06);
  border-color: #f7a823;
}

.value-icon {
  font-size: 2rem;
  color: #e03c31;
  margin-bottom: 18px;
}

.value-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: #111425;
  margin-bottom: 12px;
}

.value-card p {
  color: #555;
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0;
}

/* Home Section CTAs */
.section-cta-wrap {
  text-align: center;
  margin-top: 45px;
}

/* Responsive Overrides */
@media (max-width: 992px) {
  .usp-feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .values-grid {
    grid-template-columns: 1fr;
  }
  .subpage-title {
    font-size: 2.2rem;
  }
}

@media (max-width: 576px) {
  .usp-feature-grid {
    grid-template-columns: 1fr;
  }
  .subpage-title {
    font-size: 1.8rem;
  }
  .subpage-hero {
    padding: 100px 0 50px;
  }
}


/* ========================================================
   SCHEDULE PAGE STYLING (LỊCH HỌC & LỊCH KHAI GIẢNG)
   ======================================================== */

.schedule-highlight-strip {
  background: #ffffff;
  padding: 60px 0 30px;
}

.month-badge-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, #111425 0%, #1e2440 100%);
  border-radius: 16px;
  padding: 24px 32px;
  color: #fff;
  margin-bottom: 40px;
  box-shadow: 0 10px 30px rgba(17, 20, 37, 0.1);
  border-left: 5px solid #e03c31;
}

.month-badge-info h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: #fff;
}

.month-badge-info p {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
}

.month-promo-tag {
  background: rgba(224, 60, 49, 0.2);
  border: 1px solid rgba(224, 60, 49, 0.5);
  color: #ff7b70;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Schedule Cards Grid */
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-bottom: 50px;
}

.schedule-card {
  background: #ffffff;
  border-radius: 20px;
  border: 2px solid #edf0f5;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  position: relative;
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
}

.schedule-card:hover {
  transform: translateY(-8px);
  border-color: #e03c31;
  box-shadow: 0 20px 45px rgba(224, 60, 49, 0.12);
}

.schedule-card.featured-card {
  border-color: #e03c31;
}

.schedule-card-header {
  padding: 28px 28px 20px;
  background: linear-gradient(180deg, #fff9f8 0%, #ffffff 100%);
  border-bottom: 1px dashed #e5e8ed;
  position: relative;
}

.schedule-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.status-badge {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 50px;
  letter-spacing: 0.5px;
}

.status-badge.opening {
  background: rgba(224, 60, 49, 0.12);
  color: #e03c31;
  border: 1px solid rgba(224, 60, 49, 0.25);
}

.status-badge.hot {
  background: rgba(247, 168, 35, 0.15);
  color: #d48a0f;
  border: 1px solid rgba(247, 168, 35, 0.3);
}

.class-code {
  font-size: 0.85rem;
  font-weight: 700;
  color: #6c757d;
}

.schedule-class-name {
  font-size: 1.5rem;
  font-weight: 900;
  color: #111425;
  margin-bottom: 8px;
  line-height: 1.3;
}

.schedule-tagline {
  font-size: 0.92rem;
  color: #666;
  margin: 0;
}

.schedule-card-body {
  padding: 24px 28px;
  flex-grow: 1;
}

.schedule-meta-list {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

.schedule-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid #f2f4f8;
  font-size: 0.95rem;
  color: #333;
}

.schedule-meta-item:last-child {
  border-bottom: none;
}

.meta-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #f8f9fa;
  color: #e03c31;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.95rem;
}

.meta-content strong {
  display: block;
  font-size: 0.82rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.meta-content span {
  font-weight: 600;
  color: #111425;
}

.meta-content .highlight-date {
  color: #e03c31;
  font-weight: 800;
  font-size: 1.05rem;
}

/* Seat progress bar */
.seat-status-box {
  background: #fbfbfc;
  border-radius: 10px;
  padding: 14px 16px;
  margin-top: 15px;
  border: 1px solid #eee;
}

.seat-status-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #495057;
}

.seat-progress-bar {
  width: 100%;
  height: 8px;
  background: #e9ecef;
  border-radius: 50px;
  overflow: hidden;
}

.seat-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #e03c31, #f7a823);
  border-radius: 50px;
}

.schedule-card-footer {
  padding: 20px 28px 26px;
  background: #fafbfc;
  border-top: 1px solid #edf0f5;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.schedule-card-footer .btn {
  width: 100%;
  justify-content: center;
  font-size: 1rem;
  padding: 14px 20px;
}

.schedule-guarantee-note {
  text-align: center;
  font-size: 0.82rem;
  color: #6c757d;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

/* Schedule Process Roadmap */
.process-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 35px;
}

.process-step-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 28px 22px;
  border: 1px solid #eef2f6;
  text-align: center;
  position: relative;
  transition: all 0.3s;
}

.process-step-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
  border-color: #f7a823;
}

.step-num-bubble {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #e03c31, #f7a823);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 auto 18px;
}

.process-step-card h4 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: #111425;
}

.process-step-card p {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.6;
  margin: 0;
}

/* Policy Row */
.policy-box-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 35px;
}

.policy-item-box {
  background: #f8faff;
  border: 1px solid #e1e7f5;
  border-radius: 14px;
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.policy-icon {
  font-size: 1.6rem;
  color: #e03c31;
  flex-shrink: 0;
  margin-top: 2px;
}

.policy-text h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: #111425;
  margin-bottom: 6px;
}

.policy-text p {
  font-size: 0.88rem;
  color: #555;
  margin: 0;
  line-height: 1.55;
}

@media (max-width: 992px) {
  .schedule-grid {
    grid-template-columns: 1fr;
  }
  .month-badge-banner {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  .process-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .policy-box-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .process-steps-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================================
   WP ADDITIONS – phần bổ sung cho bản WordPress
   (chi tiết bài viết, phân trang, lỗi form, tiện ích)
   ======================================================== */
.screen-reader-text {
  border: 0;
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute !important;
  width: 1px;
  word-wrap: normal !important;
}

/* Card tin tức: ảnh bấm được, hỗ trợ ảnh đại diện thật */
a.news-thumb {
  display: block;
  text-decoration: none;
}

/* Phân trang */
.xb-pagination {
  margin-top: 44px;
}

.xb-pagination .nav-links,
nav.xb-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.xb-pagination .page-numbers,
nav.xb-pagination > a,
nav.xb-pagination > span {
  min-width: 42px;
  height: 42px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1.5px solid var(--border-gray);
  background: #fff;
  color: #1a1e36;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.xb-pagination .page-numbers.current,
.xb-pagination a.page-numbers:hover {
  background: #e03c31;
  border-color: #e03c31;
  color: #fff;
}

.xb-pagination .page-numbers.dots {
  border-color: transparent;
  background: transparent;
}

/* Trang trống / 404 */
.xb-empty {
  text-align: center;
  padding: 30px 0;
  color: #6c757d;
}

.xb-empty > i {
  font-size: 2.6rem;
  color: #e03c31;
  margin-bottom: 12px;
}

.xb-empty p {
  margin-bottom: 18px;
}

/* Ô tìm kiếm */
.xb-search-bar {
  max-width: 560px;
  margin: 40px auto 0;
}

.xb-search-bar .search-form {
  display: flex;
  gap: 10px;
}

.xb-search-bar label {
  flex: 1;
}

.xb-search-bar .search-field {
  width: 100%;
  padding: 12px 18px;
  border: 1.5px solid var(--border-gray);
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.95rem;
}

.xb-search-bar .search-submit {
  padding: 12px 22px;
  border: none;
  border-radius: 999px;
  background: #e03c31;
  color: #fff;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
}

/* Chi tiết bài viết */
.single-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  margin: -4px 0 14px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
}

.single-section {
  padding-top: 60px;
}

.single-container {
  max-width: 800px;
}

.single-thumb {
  margin: 0 0 32px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(17, 20, 37, 0.12);
}

.single-thumb img {
  display: block;
  width: 100%;
  height: auto;
}

.entry-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #222;
  overflow-wrap: break-word;
}

.entry-content > * + * {
  margin-top: 1.1em;
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
  color: #1a1e36;
  font-weight: 800;
  line-height: 1.35;
  margin-top: 1.6em;
}

.entry-content h2 { font-size: 1.6rem; }
.entry-content h3 { font-size: 1.3rem; }

.entry-content a {
  color: #e03c31;
  text-decoration: underline;
}

.entry-content ul,
.entry-content ol {
  padding-left: 1.4em;
}

.entry-content li + li {
  margin-top: 0.4em;
}

.entry-content blockquote {
  margin-left: 0;
  margin-right: 0;
  padding: 16px 22px;
  border-left: 4px solid #e03c31;
  background: #fff5f5;
  border-radius: 0 12px 12px 0;
  font-style: italic;
}

.entry-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.entry-content figure {
  margin-left: 0;
  margin-right: 0;
}

.entry-content figcaption {
  font-size: 0.85rem;
  color: #6c757d;
  text-align: center;
  margin-top: 6px;
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
}

.entry-content th,
.entry-content td {
  border: 1px solid #e2e8f0;
  padding: 10px 12px;
  text-align: left;
}

.entry-content th {
  background: #f8faff;
}

.single-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid #edf2f7;
}

.xb-empty .single-footer {
  justify-content: center;
  border-top: none;
}

.related-posts {
  background: #f8faff;
}

/* Form đăng ký: ô bẫy bot, lỗi, trạng thái gửi */
.xb-hp {
  position: absolute !important;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-group.has-error .input-wrap input,
.form-group.has-error .input-wrap select {
  border-color: #e03c31;
  background: #fff8f8;
}

.form-field-error {
  display: block;
  margin-top: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #e03c31;
}

.form-error-message {
  margin: 0;
  padding: 10px 14px;
  border-radius: 10px;
  background: #fff5f5;
  border: 1px solid #fad2d2;
  color: #b71c1c;
  font-size: 0.88rem;
  font-weight: 600;
}

.form-error-message[hidden] {
  display: none;
}

.modal-form button[type="submit"][disabled] {
  opacity: 0.7;
  cursor: wait;
}

@media (max-width: 576px) {
  .single-footer {
    flex-direction: column;
  }

  .single-footer .btn {
    width: 100%;
    justify-content: center;
  }

  .xb-search-bar .search-form {
    flex-direction: column;
  }
}

/* Sửa lỗi tràn ngang trên điện thoại có sẵn trong mẫu:
   nút chữ dài không xuống dòng và khối nút CTA cuối trang quá rộng. */
@media (max-width: 768px) {
  main .btn,
  main .btn[style*="nowrap"] {
    white-space: normal !important;
    max-width: 100%;
  }

  .prefooter-buttons {
    flex-direction: column;
    align-items: stretch;
    flex-shrink: 1;
    width: 100%;
  }

  .prefooter-buttons .btn {
    width: 100%;
  }

  .comparison-table-wrapper {
    max-width: 100%;
  }
}

/* Sửa lỗi có sẵn trong mẫu: popup cao hơn màn hình (điện thoại nằm ngang, màn hình thấp)
   thì nút gửi bị khuất. Cho popup cuộn bên trong. */
.modal-card {
  max-height: calc(100vh - 40px);
  max-height: calc(100dvh - 40px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* ========================================================
   RESPONSIVE FIXES – sửa các lỗi bố cục có sẵn trong mẫu
   ======================================================== */

/* 1. Header: khối nút CTA + nút menu chưa có CSS nên nút menu (display:block trên mobile) rơi xuống dòng. */
.header-action {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle-btn {
  background: none;
  border: none;
  padding: 6px;
  line-height: 1;
  cursor: pointer;
}

@media (max-width: 576px) {
  .header-inner {
    height: 68px;
    gap: 10px;
  }

  .header-logo-img {
    height: 36px;
  }

  #headerCtaBtn {
    padding: 9px 14px;
    font-size: 0.78rem;
    gap: 6px;
  }

  #headerCtaBtn i {
    display: none;
  }
}

@media (max-width: 360px) {
  #headerCtaBtn {
    display: none;
  }
}

/* 2. Hàng tiêu đề + nút (Giảng viên, Tin tức): xếp dọc trên màn hẹp thay vì bóp nút. */
@media (max-width: 768px) {
  .teachers-header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }

  .teachers-header-row .btn {
    white-space: nowrap !important;
  }
}

/* 3. Lưới ở tablet (577–768px): 2 cột thay vì 1 cột to bè. */
@media (min-width: 577px) and (max-width: 768px) {
  .smart-grid,
  .teachers-grid,
  .testimonial-cards-wrapper,
  .partner-quotes-grid,
  .news-grid,
  .uni-benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  /* 4. Nhãn góc khóa học: đặt trên tiêu đề thay vì đè lên tiêu đề. */
  .course-card {
    padding: 28px 22px;
  }

  .course-badge {
    position: static;
    align-self: flex-start;
    margin-bottom: 14px;
  }

  /* 5. Hàng badge trạng thái + mã lớp: cho xuống dòng. */
  .schedule-badge-row {
    flex-wrap: wrap;
    gap: 8px;
  }

  /* 6. Bảng so sánh: chuyển thành dạng thẻ xếp dọc thay vì cuộn ngang. */
  .comparison-table {
    min-width: 0;
  }

  .comparison-table thead {
    display: none;
  }

  .comparison-table,
  .comparison-table tbody,
  .comparison-table tr,
  .comparison-table td {
    display: block;
    width: 100% !important;
  }

  .comparison-table tr {
    border-bottom: 1px solid #eaeaea;
    padding-bottom: 6px;
  }

  .comparison-table td {
    padding: 10px 18px;
    border: none;
  }

  .comparison-table td:first-child {
    padding-top: 18px;
  }

  .comparison-table td.col-xueba::before,
  .comparison-table td:last-child::before {
    display: block;
    margin-bottom: 4px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.4px;
    text-transform: uppercase;
  }

  .comparison-table td.col-xueba::before {
    content: "Xueba Academy";
    color: #e03c31;
  }

  .comparison-table td:last-child::before {
    content: "Trung tâm truyền thống";
    color: #6c757d;
  }
}

/* 7. Link điều khoản ở chân trang: không bóp chữ, cho xuống dòng gọn. */
.footer-terms {
  flex-wrap: wrap;
  justify-content: center;
  row-gap: 6px;
}

.footer-terms a {
  white-space: nowrap;
}

/* 8. Thanh trên cùng ở màn rất hẹp: thu nhỏ khoảng cách để không vỡ dòng. */
@media (max-width: 400px) {
  .top-bar-links {
    gap: 12px;
    font-size: 0.78rem;
  }

  .top-bar-links .top-link {
    white-space: nowrap;
  }
}

/* Nút chuyển ngôn ngữ VI | ZH là link */
.lang-switch a.lang-btn {
  color: inherit;
  text-decoration: none;
}

.lang-switch a.lang-btn:hover {
  opacity: 1;
}

/* Nhãn "Tình trạng đăng ký:" không bị bẻ dòng giữa chữ trên mobile. */
.seat-status-header > span:first-child {
  white-space: nowrap;
}