/* ===== TRANG GIỚI THIỆU GIA SƯ TỐT ===== */

/* ===== HERO ===== */
.gt-hero {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-mid) 55%, #1a3a7a 100%);
  padding: 64px 0 0;
  position: relative;
  overflow: hidden;
}
.gt-hero::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: rgba(240,124,26,0.07);
  pointer-events: none;
}

.gt-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: flex-end;
}

.gt-hero-content { padding-bottom: 56px; }

.gt-hero-label {
  display: inline-block;
  background: rgba(240,124,26,0.18);
  color: var(--orange-light);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
  border: 1px solid rgba(240,124,26,0.3);
}

.gt-hero-title {
  font-size: clamp(2.6rem, 6vw, 4rem);
  font-weight: 900;
  color: #fff;
  line-height: 1;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.gt-hero-title span { color: var(--orange); }

.gt-hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.78);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 440px;
}

.gt-hero-stats {
  display: flex;
  gap: 28px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.gt-stat {
  display: flex;
  align-items: center;
  gap: 10px;
}
.gt-stat-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: rgba(240,124,26,0.15);
  border: 1px solid rgba(240,124,26,0.3);
  display: flex; align-items: center; justify-content: center;
  color: var(--orange-light);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.gt-stat-text strong {
  display: block;
  font-size: 1.2rem;
  font-weight: 900;
  color: #fff;
  line-height: 1;
}
.gt-stat-text span {
  font-size: 0.73rem;
  color: rgba(255,255,255,0.62);
  margin-top: 2px;
  display: block;
}

.gt-hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.gt-btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--orange); color: #fff; font-weight: 700;
  padding: 13px 28px; border-radius: 7px; font-size: 0.95rem;
  transition: background 0.2s, transform 0.15s; text-decoration: none;
  border: none; cursor: pointer;
}
.gt-btn-primary:hover { background: var(--orange-dark); transform: translateY(-2px); }
.gt-btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: #fff; font-weight: 700;
  padding: 13px 28px; border-radius: 7px; font-size: 0.95rem;
  border: 2px solid rgba(255,255,255,0.5);
  transition: all 0.2s; text-decoration: none; cursor: pointer;
}
.gt-btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

/* Hero image side */
.gt-hero-img {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: flex-end;
}
.gt-hero-img-wrap {
  width: 100%;
  max-width: 500px;
  border-radius: 20px 20px 0 0;
  overflow: hidden;
  position: relative;
}
.gt-hero-img-wrap img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* ===== THƯ NGỎ ===== */
.gt-letter {
  padding: 72px 0 60px;
  background: #fff;
}
.gt-letter-inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 56px;
  align-items: flex-start;
}
.gt-founder {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.gt-founder-img-wrap {
  width: 180px; height: 170px;
  border-radius: 50%;
  overflow: visible;
  border: 4px solid var(--orange);
  margin-bottom: 16px;
  position: relative;
  box-shadow: 0 8px 32px rgba(240,124,26,0.25);
}
.gt-founder-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: 50%;
}
.gt-quote-icon {
  position: absolute;
  right: -6px;
  bottom: -6px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--orange);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 1rem;
  z-index: 1;
  box-shadow: 0 8px 20px rgba(240,124,26,0.35);
}
.gt-founder-name {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 4px;
}
.gt-founder-title {
  font-size: 0.8rem;
  color: #888;
}

.gt-letter-content {}
.gt-section-kicker {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.gt-section-kicker::before {
  content: '';
  display: block;
  width: 30px; height: 2px;
  background: var(--orange);
  border-radius: 2px;
  flex-shrink: 0;
}
.gt-section-title {
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 20px;
  line-height: 1.25;
}
.gt-letter-text {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.8;
}
.gt-letter-text p { margin-bottom: 14px; }
.gt-letter-text strong { color: var(--navy); }
.gt-letter-sign {
  margin-top: 20px;
  font-size: 1.1rem;
  font-style: italic;
  color: var(--orange);
  font-weight: 700;
}

/* ===== TẦM NHÌN / SỨ MỆNH ===== */
.gt-mission {
  padding: 76px 0 82px;
  background:
    radial-gradient(circle at top center, rgba(26,109,181,0.08), transparent 32%),
    linear-gradient(180deg, #f6f8fd 0%, #eef3fb 100%);
}
.gt-section-center {
  text-align: center;
  margin-bottom: 44px;
}
.gt-section-center .gt-section-kicker {
  justify-content: center;
}
.gt-section-center .gt-section-kicker::before { display: none; }
.gt-section-center .gt-section-kicker::after {
  content: '';
  display: block;
  width: 30px; height: 2px;
  background: var(--orange);
  border-radius: 2px;
  flex-shrink: 0;
}
.gt-section-center .gt-section-title {
  text-align: center;
  color: var(--navy);
}
.gt-mission-divider {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--navy);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 44px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}
.gt-mission-divider::before,
.gt-mission-divider::after {
  content: '';
  flex: 1;
  height: 1.5px;
  background: linear-gradient(to right, transparent, #d0d4e8, transparent);
}

.gt-mission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
}
.gt-mission-card {
  background: #fff;
  border-radius: 22px;
  padding: 34px 30px 30px;
  text-align: center;
  box-shadow: 0 16px 40px rgba(10,31,68,0.08);
  border: 1px solid rgba(10,31,68,0.07);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 340px;
}
.gt-mission-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  right: 30px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--orange), #f8bc7a);
  opacity: 0.9;
}
.gt-mission-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 48px rgba(10,31,68,0.14);
  border-color: rgba(240,124,26,0.22);
}
.gt-mission-card:nth-child(1)::before {
  background: linear-gradient(90deg, var(--navy), #2f5fa7);
}
.gt-mission-card:nth-child(3)::before {
  background: linear-gradient(90deg, #1a6db5, #58a7ea);
}
.gt-mission-icon {
  width: 76px; height: 76px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
  margin: 6px auto 20px;
  box-shadow: 0 14px 26px rgba(10,31,68,0.12);
  flex-shrink: 0;
}
.gt-mission-icon.navy { background: var(--navy); color: #fff; }
.gt-mission-icon.orange { background: var(--orange); color: #fff; }
.gt-mission-icon.blue { background: #1a6db5; color: #fff; }
.gt-mission-card h3 {
  font-size: 1.18rem;
  font-weight: 900;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 14px;
  line-height: 1.35;
}
.gt-mission-card p {
  font-size: 0.95rem;
  color: #5f677a;
  line-height: 1.75;
  margin-bottom: 0;
  flex-grow: 1;
}
.gt-mission-card.is-values {
  text-align: left;
}
.gt-mission-card.is-values .gt-mission-icon,
.gt-mission-card.is-values h3 {
  align-self: center;
  text-align: center;
}
.gt-mission-card.is-values p {
  margin-bottom: 0;
  font-size: 0.94rem;
  line-height: 1.7;
  text-align: center;
}

/* ===== VÌ SAO CHỌN ===== */
.gt-why {
  padding: 82px 0;
  background:
    radial-gradient(circle at top center, rgba(240,124,26,0.07), transparent 24%),
    linear-gradient(180deg, #ffffff 0%, #f6f8fd 100%);
}
.gt-why-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 46px;
  position: relative;
}
.gt-why-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: 28px 24px 24px;
  position: relative;
  background: rgba(255,255,255,0.92);
  border: 1px solid #e8edf7;
  border-radius: 22px;
  box-shadow: 0 16px 40px rgba(10,31,68,0.08);
  min-height: 220px;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.gt-why-item::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  width: 58px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--orange), #f8b166);
}
.gt-why-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 46px rgba(10,31,68,0.12);
  border-color: rgba(240,124,26,0.26);
}
.gt-why-icon {
  width: 72px; height: 72px;
  border-radius: 20px;
  background: linear-gradient(180deg, #f7f9fe 0%, #eef3fb 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
  color: var(--navy);
  margin-bottom: 18px;
  border: 1px solid #dfe7f5;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
  transition: all 0.2s;
}
.gt-why-item:hover .gt-why-icon {
  background: linear-gradient(135deg, var(--orange) 0%, #ffb257 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 12px 28px rgba(240,124,26,0.26);
}
.gt-why-item h4 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 10px;
  line-height: 1.4;
}
.gt-why-item p {
  font-size: 0.9rem;
  color: #6b7385;
  line-height: 1.7;
  margin: 0;
}

/* ===== QUY TRÌNH ===== */
.gt-process {
  padding: 42px 0 38px;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-mid) 100%);
}
.gt-process .container {
  max-width: 1180px;
}
.gt-process .gt-mission-divider {
  color: #fff;
  font-size: 1.15rem;
  letter-spacing: 2px;
  gap: 14px;
  margin-bottom: 32px;
}
.gt-process .gt-mission-divider::before,
.gt-process .gt-mission-divider::after {
  max-width: 170px;
  height: 2px;
  background: linear-gradient(to right, transparent, rgba(255,173,84,0.75), transparent);
}
.gt-process-steps {
  display: flex;
  gap: 0;
  justify-content: center;
  margin-top: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: 6px 8px 0;
}
.gt-process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
  min-width: 140px;
  position: relative;
  padding: 0 12px;
}
.gt-process-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 24px;
  right: -22px;
  width: 44px;
  height: 2px;
  background: linear-gradient(90deg, rgba(255,173,84,0.15), rgba(255,173,84,0.85), rgba(255,173,84,0.15));
  z-index: 0;
}
.gt-process-step:not(:last-child)::before {
  display: none;
}
.gt-step-circle {
  width: 50px; height: 50px;
  border-radius: 50%;
  background: #fff;
  color: var(--orange);
  font-size: 1.15rem;
  font-weight: 900;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
  border: 4px solid rgba(240,124,26,0.95);
  box-shadow: 0 8px 20px rgba(240,124,26,0.22);
  flex-shrink: 0;
}
.gt-step-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  line-height: 1.45;
  max-width: 132px;
}

/* ===== CÁC MÔN HỌC ===== */
.gt-subjects {
  padding: 64px 0 52px;
  background: #f0f2f7;
}
.gt-subjects-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  margin-top: 40px;
}
.gt-subject-card {
  background: #fff;
  border-radius: 12px;
  padding: 22px 12px;
  text-align: center;
  box-shadow: 0 3px 12px rgba(10,31,68,0.07);
  border: 1.5px solid #e8eaf2;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.gt-subject-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(10,31,68,0.14);
  border-color: var(--orange);
}
.gt-subject-icon {
  font-size: 2rem;
  margin-bottom: 10px;
  display: block;
}
.gt-subject-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--navy);
}

/* Stats bar */
.gt-stats-bar {
  background: var(--navy);
  padding: 28px 0;
}
.gt-stats-bar-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.gt-stats-bar-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  border-right: 1px solid rgba(255,255,255,0.1);
}
.gt-stats-bar-item:last-child { border-right: none; }
.gt-stats-bar-icon {
  font-size: 2rem;
  color: var(--orange-light);
  flex-shrink: 0;
}
.gt-stats-bar-text strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 900;
  color: #fff;
  line-height: 1;
}
.gt-stats-bar-text span {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.65);
  margin-top: 3px;
  display: block;
}

/* ===== CTA CUỐI ===== */
.gt-cta {
  padding: 56px 0;
  background: linear-gradient(135deg, #f8f9fc 0%, #eef0f8 100%);
}
.gt-cta-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}
.gt-cta-text h2 {
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  font-weight: 900;
  color: var(--navy);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.gt-cta-text p { font-size: 0.92rem; color: #666; line-height: 1.65; max-width: 480px; }
.gt-cta-img {
  width: 220px; height: 160px;
  border-radius: 14px;
  overflow: hidden;
  flex-shrink: 0;
}
.gt-cta-img img { width: 100%; height: 100%; object-fit: cover; }
.gt-cta-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.gt-cta-btns .gt-btn-primary { font-size: 0.9rem; padding: 12px 26px; }
.gt-cta-btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--navy); font-weight: 700;
  padding: 12px 26px; border-radius: 7px; font-size: 0.9rem;
  border: 2px solid var(--navy);
  transition: all 0.2s; text-decoration: none; cursor: pointer;
}
.gt-cta-btn-secondary:hover { background: var(--navy); color: #fff; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .gt-subjects-grid { grid-template-columns: repeat(4, 1fr); }
  .gt-why-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
}
@media (max-width: 860px) {
  .gt-hero-inner { grid-template-columns: 1fr; }
  .gt-hero-img { display: none; }
  .gt-hero-content { padding-bottom: 40px; }
  .gt-letter-inner { grid-template-columns: 1fr; }
  .gt-founder { flex-direction: row; text-align: left; gap: 20px; }
  .gt-founder-img-wrap { width: 100px; height: 100px; flex-shrink: 0; }
  .gt-mission-grid { grid-template-columns: 1fr; }
  .gt-process-steps { flex-wrap: wrap; gap: 24px; justify-content: flex-start; }
  .gt-process-step:not(:last-child)::after { display: none; }
  .gt-stats-bar-inner { grid-template-columns: repeat(2, 1fr); }
  .gt-stats-bar-item { border-right: none; padding: 12px 20px; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .gt-cta-inner { grid-template-columns: 1fr; }
  .gt-cta-img { display: none; }
}
@media (max-width: 620px) {
  .gt-hero {
    padding: 24px 0 0;
  }
  .gt-hero-content {
    padding-bottom: 24px;
  }
  .gt-hero-label {
    margin-bottom: 10px;
  }
  .gt-hero-title {
    font-size: 2.4rem;
    margin-bottom: 12px;
  }
  .gt-hero-sub {
    font-size: 0.98rem;
    margin-bottom: 24px;
  }
  .gt-subjects-grid { grid-template-columns: repeat(3, 1fr); }
  .gt-why-grid { grid-template-columns: 1fr; }
  .gt-stats-bar-inner { grid-template-columns: 1fr; }
  .gt-hero-stats { gap: 16px; }
  .gt-letter {
    padding: 36px 0 40px;
  }
  .gt-letter-inner {
    gap: 24px;
  }
  .gt-founder {
    gap: 14px;
    align-items: center;
  }
  .gt-founder-img-wrap {
    width: 84px;
    height: 84px;
    margin-bottom: 0;
  }
  .gt-founder-name {
    font-size: 0.96rem;
    margin-bottom: 2px;
  }
  .gt-founder-title {
    font-size: 0.76rem;
    line-height: 1.45;
  }
  .gt-section-title {
    margin-bottom: 14px;
  }
  .gt-mission {
    padding: 44px 0 48px;
  }
  .gt-mission-divider {
    font-size: 0.96rem;
    letter-spacing: 1.6px;
    margin-bottom: 24px;
    gap: 8px;
  }
  .gt-mission-card {
    border-radius: 18px;
    padding: 24px 20px 22px;
    min-height: 0;
  }
  .gt-mission-card::before {
    left: 20px;
    right: 20px;
  }
  .gt-mission-icon {
    width: 58px;
    height: 58px;
    font-size: 1.35rem;
    margin: 4px auto 14px;
  }
  .gt-mission-card h3 {
    font-size: 1rem;
    margin-bottom: 10px;
  }
  .gt-mission-card p,
  .gt-mission-card.is-values p {
    font-size: 0.9rem;
    line-height: 1.65;
  }
  .gt-why {
    padding: 46px 0 48px;
  }
  .gt-section-center {
    margin-bottom: 24px;
  }
  .gt-section-center .gt-section-kicker {
    margin-bottom: 8px;
  }
  .gt-why-grid {
    grid-template-columns: 1fr;
    margin-top: 0;
    gap: 18px;
  }
  .gt-why-item {
    min-height: 0;
    border-radius: 18px;
    padding: 22px 18px 20px;
  }
  .gt-why-item::before {
    left: 18px;
    width: 46px;
  }
  .gt-why-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    font-size: 1.35rem;
    margin-bottom: 14px;
  }
  .gt-why-item h4 {
    font-size: 0.95rem;
    margin-bottom: 8px;
  }
  .gt-why-item p {
    font-size: 0.88rem;
    line-height: 1.6;
  }
  .gt-hero-btns {
    gap: 12px;
  }
  .gt-btn-primary,
  .gt-btn-outline {
    width: 100%;
    justify-content: center;
  }
  .gt-cta-btns {
    flex-wrap: nowrap;
    gap: 10px;
  }
  .gt-cta-btns .gt-btn-primary,
  .gt-cta-btn-secondary {
    width: auto;
    flex: 1;
    justify-content: center;
    padding-left: 14px;
    padding-right: 14px;
    font-size: 0.82rem;
  }
  .gt-process-steps { gap: 16px; }
}
@media (max-width: 400px) {
  .gt-subjects-grid { grid-template-columns: repeat(2, 1fr); }
}