/* =============================================
   BÌA MẠ VÀNG – Premium CSS Design System
   Colors: Navy #01308a | Gold #f39200 | Red #e03030
   ============================================= */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:   #01308a;
  --navy-d: #011f5c;
  --gold:   #f39200;
  --gold-d: #c97800;
  --gold-l: #ffd166;
  --red:    #e03030;
  --white:  #ffffff;
  --gray-1: #f5f6fa;
  --gray-2: #e9ecf3;
  --gray-3: #8898aa;
  --dark:   #1a1a2e;
  --zalo:   #0068ff;
  --shadow: 0 4px 24px rgba(1,48,138,.13);
  --shadow-gold: 0 4px 24px rgba(243,146,0,.25);
  --radius: 14px;
  --radius-sm: 8px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --font-main: 'Roboto', sans-serif;
  --font-head: 'Montserrat', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
ul { list-style: none; }
strong { font-weight: 700; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-pad { padding: 80px 0; }
.bg-light  { background: var(--gray-1); }
.bg-navy   { background: var(--navy-d); }

/* ---------- TOPBAR ---------- */
.topbar {
  background: var(--navy-d);
  color: rgba(255,255,255,.8);
  font-size: .82rem;
  padding: 7px 0;
  position: relative;
  z-index: 100;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
}
.topbar-left { display: flex; align-items: center; gap: 10px; }
.topbar-left i { color: var(--gold); }
.topbar-divider { opacity: .3; }
.topbar-zalo {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--gold);
  color: var(--navy-d);
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: .82rem;
  transition: var(--transition);
}
.topbar-zalo:hover { background: var(--gold-d); transform: scale(1.04); }

/* ---------- HEADER ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: var(--navy);
  box-shadow: none;
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: 0 2px 20px rgba(1,48,138,.3); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 14px; }
.logo-icon {
  width: 54px; height: 54px;
  background: linear-gradient(135deg, var(--gold-l), var(--gold), var(--gold-d));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: var(--navy-d);
  box-shadow: 0 0 0 3px rgba(243,146,0,.3), 0 4px 18px rgba(243,146,0,.5);
  flex-shrink: 0;
  position: relative;
  animation: logo-pulse 3s ease-in-out infinite;
}
@keyframes logo-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(243,146,0,.3), 0 4px 18px rgba(243,146,0,.5); }
  50%       { box-shadow: 0 0 0 6px rgba(243,146,0,.15), 0 6px 26px rgba(243,146,0,.6); }
}
.logo-text { display: flex; flex-direction: column; }
.logo-main {
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--gold);
  letter-spacing: 1px;
  line-height: 1.1;
  text-shadow: 0 0 20px rgba(243,146,0,.5), 0 2px 4px rgba(0,0,0,.3);
  background: linear-gradient(90deg, var(--gold-l), var(--gold), var(--gold-d), var(--gold));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shine-text 4s linear infinite;
}
@keyframes shine-text {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}
.logo-sub {
  font-size: .72rem;
  color: rgba(255,255,255,.75);
  letter-spacing: .5px;
  font-weight: 500;
}

/* Nav */
.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  font-size: .82rem;
  font-weight: 600;
  color: rgba(255,255,255,.85);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: .4px;
}
.nav-link:hover, .nav-link.active {
  color: var(--gold);
  background: rgba(243,146,0,.1);
}

/* Header Zalo button */
.btn-zalo-header {
  display: flex; align-items: center; gap: 8px;
  background: var(--gold);
  color: var(--navy-d);
  font-weight: 800;
  font-size: .85rem;
  padding: 10px 20px;
  border-radius: 30px;
  white-space: nowrap;
  transition: var(--transition);
  box-shadow: 0 3px 14px rgba(243,146,0,.35);
  flex-shrink: 0;
}
.btn-zalo-header:hover {
  background: var(--gold-d);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(243,146,0,.4);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none; border: none;
  cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; height: 2px; border-radius: 2px;
  background: var(--white);
  transition: var(--transition);
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px; left: 0; right: 0;
  background: var(--navy-d);
  flex-direction: column;
  padding: 10px 0 16px;
  z-index: 998;
  box-shadow: 0 8px 20px rgba(0,0,0,.3);
  transform: translateY(-10px);
  opacity: 0;
  transition: var(--transition);
}
.mobile-nav.open {
  display: flex;
  transform: translateY(0);
  opacity: 1;
}
.mobile-nav-link {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  color: rgba(255,255,255,.85);
  font-weight: 600;
  font-size: .9rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: var(--transition);
}
.mobile-nav-link:hover { color: var(--gold); background: rgba(243,146,0,.08); }
.mobile-nav-link.zalo-mob { color: var(--gold); font-weight: 800; margin-top: 4px; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    url('banner.png') center/cover no-repeat,
    linear-gradient(135deg, #011f5c 0%, #01308a 50%, #0a2060 100%);
  z-index: 0;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    rgba(1, 15, 50, 0.82) 0%,
    rgba(1, 48, 138, 0.70) 50%,
    rgba(0, 10, 40, 0.88) 100%
  );
  z-index: 1;
}
/* Gold particle shimmer */
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(243,146,0,.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(243,146,0,.10) 0%, transparent 50%);
  z-index: 2;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  padding: 80px 20px 60px;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(243,146,0,.15);
  border: 1px solid rgba(243,146,0,.4);
  color: var(--gold-l);
  font-size: .82rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 22px;
  letter-spacing: .5px;
  animation: fadeDown .7s ease both;
}
.hero-badge i { color: var(--gold); }

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  animation: fadeDown .7s .1s ease both;
}
.hero-highlight {
  background: linear-gradient(90deg, var(--gold), var(--gold-l));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,.82);
  margin-bottom: 28px;
  line-height: 1.75;
  animation: fadeDown .7s .2s ease both;
}
.hero-sub strong { color: var(--gold-l); }

.hero-tags {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 36px;
  animation: fadeDown .7s .3s ease both;
}
.hero-tag {
  display: flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  color: var(--white);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: .85rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}
.hero-tag i { color: var(--gold); }

.hero-cta {
  display: flex; flex-wrap: wrap; gap: 14px;
  animation: fadeDown .7s .4s ease both;
}

.btn-hero-zalo {
  display: flex; align-items: center; gap: 10px;
  background: var(--zalo);
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  padding: 14px 30px;
  border-radius: 50px;
  box-shadow: 0 6px 24px rgba(0,104,255,.45);
  transition: var(--transition);
  letter-spacing: .3px;
}
.btn-hero-zalo:hover {
  background: #005ee0;
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,104,255,.5);
}

.btn-hero-price {
  display: flex; align-items: center; gap: 8px;
  border: 2px solid rgba(243,146,0,.7);
  color: var(--gold-l);
  font-weight: 700;
  font-size: .95rem;
  padding: 13px 26px;
  border-radius: 50px;
  transition: var(--transition);
}
.btn-hero-price:hover {
  background: rgba(243,146,0,.12);
  border-color: var(--gold);
  transform: translateY(-2px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  color: rgba(255,255,255,.4);
  font-size: 1.4rem;
  animation: bounce 2s infinite;
}

/* ---------- URGENCY BAR ---------- */
.urgency-bar {
  background: linear-gradient(90deg, var(--red) 0%, #c0392b 100%);
  padding: 14px 0;
}
.urgency-inner {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.urgency-inner i { color: #fff; font-size: 1.3rem; }
.urgency-inner span { color: #fff; font-size: .92rem; flex: 1; }
.urgency-inner strong { font-size: 1rem; }
.urgency-btn {
  display: flex; align-items: center; gap: 6px;
  background: var(--white);
  color: var(--red);
  font-weight: 800;
  font-size: .85rem;
  padding: 8px 20px;
  border-radius: 30px;
  white-space: nowrap;
  transition: var(--transition);
}
.urgency-btn:hover { transform: scale(1.04); background: #ffe5e5; }

/* ---------- SECTION HEADER ---------- */
.section-header { text-align: center; margin-bottom: 52px; }
.section-tag {
  display: inline-block;
  background: linear-gradient(90deg, var(--gold), var(--gold-d));
  color: var(--white);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  padding: 5px 16px;
  border-radius: 30px;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  color: var(--navy-d);
  margin-bottom: 12px;
  line-height: 1.2;
}
.section-desc { color: var(--gray-3); font-size: .95rem; max-width: 560px; margin: 0 auto; }
.section-header.light .section-title { color: var(--white); }
.section-header.light .section-desc { color: rgba(255,255,255,.65); }

/* ---------- FEATURES ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-2);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-l));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(1,48,138,.15);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 58px; height: 58px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.feature-icon.gold {
  background: linear-gradient(135deg, rgba(243,146,0,.15), rgba(243,146,0,.05));
  color: var(--gold-d);
  border: 1px solid rgba(243,146,0,.3);
}
.feature-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy-d);
  margin-bottom: 10px;
}
.feature-card p { font-size: .9rem; color: var(--gray-3); line-height: 1.65; }

/* ---------- SERVICES ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--gray-2);
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(1,48,138,.18);
}
.service-img-wrap { position: relative; }
.service-img-placeholder {
  height: 160px;
  display: flex; align-items: center; justify-content: center;
  font-size: 4rem;
  color: rgba(255,255,255,.85);
}
.gold-grad   { background: linear-gradient(135deg, #c97800, #f39200, #ffd166); }
.blue-grad   { background: linear-gradient(135deg, #01308a, #0a5fc5); }
.red-grad    { background: linear-gradient(135deg, #c0392b, #e03030); }
.dark-grad   { background: linear-gradient(135deg, #1a1a2e, #2c3e50); }
.green-grad  { background: linear-gradient(135deg, #1a7a4a, #27ae60); }
.purple-grad { background: linear-gradient(135deg, #6c3483, #8e44ad); }

.service-badge {
  position: absolute; top: 12px; right: 12px;
  background: var(--red);
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.service-body { padding: 24px; }
.service-body h3 {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy-d);
  margin-bottom: 10px;
}
.service-body p { font-size: .88rem; color: var(--gray-3); line-height: 1.62; margin-bottom: 18px; }
.service-btn {
  display: inline-flex; align-items: center;
  background: var(--navy);
  color: var(--white);
  font-size: .82rem;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 30px;
  transition: var(--transition);
  letter-spacing: .3px;
}
.service-btn:hover { background: var(--gold-d); transform: translateX(3px); }

/* ---------- PRICING ---------- */
.pricing-wrap { max-width: 800px; margin: 0 auto; }
.pricing-note {
  background: linear-gradient(90deg, rgba(243,146,0,.1), rgba(243,146,0,.05));
  border-left: 4px solid var(--gold);
  padding: 14px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .88rem;
  color: var(--dark);
  margin-bottom: 28px;
  display: flex; gap: 10px; align-items: flex-start;
}
.pricing-note i { color: var(--gold); flex-shrink: 0; margin-top: 2px; }

.price-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.price-table {
  width: 100%; border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
}
.price-table thead { background: var(--navy); }
.price-table th {
  color: var(--white);
  font-family: var(--font-head);
  font-size: .85rem;
  font-weight: 700;
  padding: 18px 16px;
  text-align: center;
  letter-spacing: .4px;
}
.price-table th.highlight-col { background: var(--gold-d); }
.badge-urgent {
  display: inline-block;
  background: var(--red);
  color: #fff;
  font-size: .68rem;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: 12px;
  margin-bottom: 4px;
  letter-spacing: .3px;
}
.price-table tbody tr { border-bottom: 1px solid var(--gray-2); }
.price-table tbody tr:last-child { border-bottom: none; }
.price-table tbody tr:hover { background: rgba(1,48,138,.03); }
.price-table td {
  padding: 18px 16px;
  text-align: center;
  font-size: .92rem;
  color: var(--dark);
}
.price-table td:first-child { text-align: left; }
.size-dim { color: var(--gray-3); font-size: .78rem; font-weight: 400; }
.highlight-col { background: rgba(243,146,0,.07); }
.price-cell { font-weight: 700; color: var(--navy-d); font-size: 1rem; }
.highlight-col.price-cell { color: var(--gold-d); font-size: 1.05rem; }

.pricing-cta { text-align: center; margin-top: 32px; }

/* ---------- SHARED BUTTON ---------- */
.btn-zalo-gold {
  display: inline-flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--zalo) 0%, #0050cc 100%);
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: .95rem;
  padding: 14px 30px;
  border-radius: 50px;
  box-shadow: 0 5px 20px rgba(0,104,255,.35);
  transition: var(--transition);
  letter-spacing: .2px;
}
.btn-zalo-gold:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0,104,255,.45);
  background: linear-gradient(135deg, #0050cc, var(--zalo));
}
.btn-zalo-gold.big { font-size: 1.05rem; padding: 16px 36px; }

/* ---------- HOW IT WORKS ---------- */
.steps-grid {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}
.step-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  flex: 1; min-width: 220px; max-width: 300px;
  transition: var(--transition);
  backdrop-filter: blur(6px);
}
.step-card:hover { background: rgba(255,255,255,.1); transform: translateY(-6px); }
.step-num {
  font-family: var(--font-head);
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--gold);
  margin-bottom: 14px;
  opacity: .8;
}
.step-icon {
  font-size: 2.2rem;
  color: var(--gold);
  margin-bottom: 16px;
}
.step-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.step-card p { font-size: .88rem; color: rgba(255,255,255,.65); line-height: 1.65; }
.step-arrow {
  color: var(--gold);
  font-size: 1.4rem;
  opacity: .5;
  align-self: center;
  padding: 0 8px;
}
.how-cta { text-align: center; margin-top: 44px; }

/* ---------- GALLERY ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 200px);
  gap: 16px;
}
.gallery-placeholder {
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.gallery-placeholder img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.gp1 { background: linear-gradient(135deg, #c97800 0%, #ffd166 50%, #d4a300 100%); grid-column: span 1; grid-row: span 2; }
.gp2 { background: linear-gradient(135deg, #01308a, #0a5fc5); }
.gp3 { background: linear-gradient(135deg, #1a7a4a, #27ae60); }
.gp4 { background: linear-gradient(135deg, #6c3483, #8e44ad); }
.gp5 { background: linear-gradient(135deg, #c0392b, #e74c3c); }
.gp6 { background: linear-gradient(135deg, #2c3e50, #3d5a72); }

/* Pattern overlay */
.gallery-placeholder::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(45deg, rgba(255,255,255,.05) 0px, rgba(255,255,255,.05) 1px, transparent 1px, transparent 12px);
  pointer-events: none;
}
.gal-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.35);
  color: var(--white);
  font-size: 2rem;
  opacity: 0;
  transition: var(--transition);
}
.gallery-placeholder:hover .gal-overlay { opacity: 1; }
.gallery-placeholder:hover { transform: scale(1.02); box-shadow: 0 12px 36px rgba(0,0,0,.25); }

.gal-label {
  position: absolute;
  bottom: 14px; left: 14px; right: 14px;
  color: var(--white);
  font-family: var(--font-head);
  font-size: .82rem;
  font-weight: 700;
  background: rgba(0,0,0,.4);
  padding: 6px 12px;
  border-radius: 8px;
  backdrop-filter: blur(4px);
  letter-spacing: .3px;
}

/* ---------- TESTIMONIALS ---------- */
.testi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.testi-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-2);
  transition: var(--transition);
  position: relative;
}
.testi-card::after {
  content: '"';
  position: absolute;
  top: 16px; right: 24px;
  font-size: 5rem;
  color: var(--gold);
  opacity: .12;
  font-family: Georgia, serif;
  line-height: 1;
}
.testi-card:hover { transform: translateY(-5px); box-shadow: 0 12px 32px rgba(1,48,138,.13); }
.testi-stars { color: var(--gold); font-size: 1.05rem; margin-bottom: 14px; letter-spacing: 2px; }
.testi-text { font-size: .92rem; color: var(--dark); line-height: 1.7; margin-bottom: 20px; font-style: italic; }
.testi-author { display: flex; align-items: center; gap: 14px; }
.testi-avatar {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--navy), var(--gold-d));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: .85rem;
  flex-shrink: 0;
}
.testi-author strong { display: block; font-size: .9rem; color: var(--navy-d); }
.testi-author span { font-size: .78rem; color: var(--gray-3); }

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 22px; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-icon {
  width: 46px; height: 46px;
  background: linear-gradient(135deg, var(--navy), #0a5fc5);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-item strong { display: block; font-size: .82rem; color: var(--gray-3); margin-bottom: 3px; }
.contact-item span, .contact-item a { font-size: .95rem; color: var(--navy-d); font-weight: 600; }
.contact-link:hover { color: var(--zalo); text-decoration: underline; }

.contact-box {
  background: var(--white);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-2);
}
.contact-box-title {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--navy-d);
  margin-bottom: 12px;
}
.contact-box p { font-size: .9rem; color: var(--gray-3); margin-bottom: 22px; line-height: 1.65; }
.contact-template { margin-bottom: 26px; display: flex; flex-direction: column; gap: 10px; }
.template-line {
  display: flex; align-items: center; gap: 10px;
  font-size: .88rem; color: var(--dark);
  background: var(--gray-1);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
}
.template-line i { color: var(--gold-d); flex-shrink: 0; }

/* ---------- GOOGLE MAPS ---------- */
.map-wrap {
  margin-top: 48px;
}
.map-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: .88rem;
  font-weight: 700;
  color: var(--navy-d);
  margin-bottom: 14px;
  padding: 10px 16px;
  background: linear-gradient(90deg, rgba(243,146,0,.1), rgba(243,146,0,.04));
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.map-label i { color: var(--gold-d); font-size: 1rem; }
.map-container {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-2);
  line-height: 0;
}
.map-container iframe {
  display: block;
  width: 100%;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-2);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: 0 8px 28px rgba(1,48,138,.15);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: .95rem;
  font-weight: 700;
  color: var(--navy-d);
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover {
  color: var(--gold-d);
}
.faq-question i {
  color: var(--gold);
  font-size: .8rem;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-item.open .faq-question i {
  transform: rotate(180deg);
}
.faq-item.open .faq-question {
  color: var(--gold-d);
  border-bottom: 1px solid var(--gray-2);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s ease;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 18px 24px 22px;
}
.faq-answer p {
  font-size: .9rem;
  color: var(--dark);
  line-height: 1.75;
}
.faq-answer strong {
  color: var(--navy-d);
}

/* ---------- FOOTER ---------- */
.footer {
  background: #111827;
  color: rgba(255,255,255,.75);
  padding-top: 60px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-logo {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--gold);
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.footer-logo i { color: var(--gold); }
.footer-col p { font-size: .88rem; line-height: 1.7; margin-bottom: 8px; }
.footer-col p i { color: var(--gold); margin-right: 6px; }
.footer-col p a { color: rgba(255,255,255,.8); }
.footer-col p a:hover { color: var(--gold); }

.footer-social { display: flex; gap: 10px; margin-top: 18px; }
.footer-social a {
  width: 38px; height: 38px;
  background: rgba(255,255,255,.08);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--gold-d); transform: translateY(-2px); }

.footer-col h4 {
  font-family: var(--font-head);
  font-size: .88rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: .88rem;
  color: rgba(255,255,255,.65);
  transition: var(--transition);
  display: flex; align-items: center; gap: 6px;
}
.footer-col ul li a::before { content: '›'; color: var(--gold); font-weight: 700; }
.footer-col ul li a:hover { color: var(--gold); padding-left: 4px; }

.footer-zalo-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--zalo);
  color: var(--white);
  font-weight: 700;
  font-size: .82rem;
  padding: 9px 20px;
  border-radius: 30px;
  margin-top: 14px;
  transition: var(--transition);
}
.footer-zalo-btn:hover { background: #005ee0; transform: translateY(-2px); }

.footer-bottom {
  padding: 18px 0;
  text-align: center;
  font-size: .8rem;
  color: rgba(255,255,255,.4);
}

/* ---------- FLOATING ZALO ---------- */
.float-zalo {
  position: fixed;
  bottom: 28px; right: 28px;
  z-index: 9999;
  display: flex; align-items: center; gap: 10px;
  background: var(--zalo);
  color: var(--white);
  font-weight: 800;
  font-size: .88rem;
  padding: 12px 20px 12px 16px;
  border-radius: 50px;
  box-shadow: 0 6px 24px rgba(0,104,255,.5);
  transition: var(--transition);
  text-decoration: none;
}
.float-zalo:hover {
  background: #005ee0;
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 12px 32px rgba(0,104,255,.55);
}
.float-zalo-label { white-space: nowrap; }
.float-zalo-pulse {
  position: absolute;
  top: 0; right: 0;
  width: 14px; height: 14px;
  background: var(--red);
  border-radius: 50%;
  border: 2px solid var(--white);
  animation: pulse-dot 1.8s ease-in-out infinite;
}

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: 90px; right: 28px;
  z-index: 9998;
  width: 42px; height: 42px;
  background: var(--navy);
  color: var(--white);
  border: none; cursor: pointer;
  border-radius: 50%;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(1,48,138,.3);
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--gold-d); transform: translateY(-3px); }

/* ---------- ANIMATIONS ---------- */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}
@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.4); opacity: .6; }
}

/* Scroll fade-in */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity .55s ease, transform .55s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav, .btn-zalo-header { display: none; }
  .hamburger { display: flex; }
  .topbar-left { gap: 6px; font-size: .75rem; }

  .hero { min-height: 100svh; }
  .hero-content { padding: 60px 20px 40px; }

  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }

  .steps-grid { gap: 16px; }
  .step-arrow { display: none; }
  .step-card { max-width: none; min-width: 0; }

  .section-pad { padding: 56px 0; }

  .float-zalo-label { display: none; }
  .float-zalo { padding: 12px; border-radius: 50%; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; }
  .btn-hero-zalo, .btn-hero-price { width: 100%; justify-content: center; }
}

/* ========== SERVICE CARD THUMBNAILS ========== */
.service-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.service-img-wrap {
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.service-view-btn {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0,0,0,.65);
  color: #fff;
  font-size: .82rem;
  padding: 6px 14px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transform: translateY(8px);
  transition: var(--transition);
  backdrop-filter: blur(4px);
}
.service-img-wrap:hover .service-view-btn {
  opacity: 1;
  transform: translateY(0);
}

/* ========== LIGHTBOX MODAL ========== */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
}
.lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}
.lightbox-content {
  background: var(--navy);
  border: 1px solid rgba(212,175,55,.25);
  border-radius: 16px;
  padding: 32px;
  max-width: 900px;
  width: 92%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: lightboxIn .35s ease;
}
@keyframes lightboxIn {
  from { transform: scale(.9) translateY(24px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}
.lightbox-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: .7;
  transition: var(--transition);
  z-index: 2;
}
.lightbox-close:hover { opacity: 1; color: var(--gold); }
.lightbox-title {
  font-family: var(--font-head);
  color: var(--gold);
  font-size: 1.35rem;
  margin-bottom: 24px;
  text-align: center;
}
.lightbox-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}
.lightbox-img-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.lightbox-img-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(212,175,55,.15);
}
.lightbox-img-card img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  display: block;
}
.lightbox-img-label {
  display: block;
  padding: 12px 14px;
  color: #ccc;
  font-size: .85rem;
  text-align: center;
}
.lightbox-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 0 auto;
  max-width: 280px;
}