/* ========================================
   SIÊU TRỢ LÝ AI PRO — LANDING PAGE CSS
   Light Premium + Red Headings + Orange CTA
   ======================================== */

/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #ffffff;
  color: #1a1a2e;
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }

/* === CSS VARIABLES === */
:root {
  --bg-white: #ffffff;
  --bg-light: #f8f9fc;
  --bg-card: #ffffff;
  --bg-section-alt: #f1f3f8;
  --red: #e53935;
  --red-dark: #c62828;
  --red-light: rgba(229,57,53,0.08);
  --orange: #ff6b35;
  --orange2: #f7931e;
  --green: #22c55e;
  --green-light: rgba(34,197,94,0.08);
  --gold: #f59e0b;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #94a3b8;
  --border: rgba(0,0,0,0.08);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-cta: 0 4px 15px rgba(255,107,53,0.35);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4 { font-weight: 800; line-height: 1.25; }
h2 { font-size: 1.6rem; text-align: center; margin-bottom: 10px; color: var(--text-primary); }
h2 .red { color: var(--red); }
.section-line {
  width: 60px; height: 3px; margin: 12px auto 30px;
  background: linear-gradient(90deg, var(--red), var(--orange));
  border-radius: 2px;
}
.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 600px;
  margin: -10px auto 30px;
  line-height: 1.6;
}

/* === ANIMATIONS === */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,107,53,0.5); }
  50% { box-shadow: 0 0 0 15px rgba(255,107,53,0); }
}
@keyframes pulseRing {
  0%, 100% { box-shadow: 0 0 0 0 rgba(229,57,53,0.4); }
  50% { box-shadow: 0 0 0 12px rgba(229,57,53,0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.7); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

/* Scroll reveal */
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-right { opacity: 0; transform: translateX(40px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-left.visible, .reveal-right.visible { opacity: 1; transform: translateX(0); }

/* === CTA BUTTONS === */
.cta-btn {
  display: inline-block;
  width: 100%;
  text-align: center;
  padding: 18px 24px;
  background: linear-gradient(135deg, var(--orange), var(--orange2));
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  animation: pulse 2s infinite;
  box-shadow: var(--shadow-cta);
  transition: transform 0.3s, box-shadow 0.3s;
  letter-spacing: 0.5px;
}
.cta-btn:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 25px rgba(255,107,53,0.5);
}
.cta-btn-secondary {
  display: inline-block;
  width: 100%;
  text-align: center;
  padding: 14px 24px;
  background: transparent;
  color: var(--red);
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid var(--red);
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s;
  margin-top: 10px;
}
.cta-btn-secondary:hover {
  background: var(--red-light);
  transform: scale(1.02);
}

/* =====================================================
   SECTION 1 — HERO
   ===================================================== */
.hero {
  background: linear-gradient(180deg, #fff5f5 0%, #ffffff 100%);
  padding: 60px 20px 40px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%; right: -30%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(229,57,53,0.05), transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,107,53,0.04), transparent 70%);
  pointer-events: none;
}
.hero-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}
.hero-badge {
  display: inline-block;
  background: var(--red-light);
  color: var(--red);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid rgba(229,57,53,0.25);
  letter-spacing: 1px;
  text-transform: uppercase;
  text-align: center;
}
.hero-content { text-align: center; }
.hero-title {
  font-size: 2rem;
  color: var(--text-primary);
  text-align: center;
  line-height: 1.15;
}
.hero-title .highlight {
  color: var(--red);
  display: block;
  font-size: 2.5rem;
}
.hero-tagline {
  font-size: 1.1rem;
  color: var(--red);
  text-align: center;
  font-style: italic;
  opacity: 0.9;
  margin: 12px 0;
}
.hero-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 550px;
  margin: 0 auto 20px;
  line-height: 1.7;
}
.hero-spots {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 8px;
}
.hero-spots strong { color: var(--red); }

@media (min-width: 768px) {
  .hero { padding: 80px 40px 60px; }
  .hero-layout { flex-direction: row; text-align: left; }
  .hero-content { text-align: left; }
  .hero-badge, .hero-title, .hero-tagline, .hero-desc { text-align: left; }
  .hero-desc { margin: 0 0 20px; }
  .hero-title { font-size: 2.6rem; }
  .hero-title .highlight { font-size: 3.2rem; }
}

/* === DESKTOP FONT SIZE BOOST === */
@media (min-width: 1024px) {
  body { font-size: 18px; }
  .container { max-width: 960px; }
  h2 { font-size: 2rem; }
  .section-subtitle { font-size: 1.05rem; max-width: 700px; }
  .hero-title { font-size: 3rem; }
  .hero-title .highlight { font-size: 3.8rem; }
  .hero-tagline { font-size: 1.25rem; }
  .hero-desc { font-size: 1.05rem; max-width: 620px; }
  .hero-badge { font-size: 0.82rem; padding: 8px 20px; }
  .cta-btn { font-size: 1.1rem; padding: 20px 28px; }
  .cta-btn-secondary { font-size: 1rem; padding: 16px 28px; }
  .price-current { font-size: 2.2rem; }
  .price-original { font-size: 1rem; }
  .price-urgency { font-size: 0.95rem; }
  .price-cta { font-size: 1rem; padding: 12px 36px; }
  .banner-quote { font-size: 1.5rem; max-width: 700px; }
  .banner-sub { font-size: 1rem; max-width: 600px; }
  .pain-card h4 { font-size: 1rem; }
  .pain-card p { font-size: 0.9rem; }
  .pain-item h4 { font-size: 1rem; }
  .pain-item p { font-size: 0.92rem; }
  .audience-item h4 { font-size: 1rem; }
  .audience-item p { font-size: 0.9rem; }
  .arch-card h4 { font-size: 0.95rem; }
  .arch-card p { font-size: 0.85rem; }
  .roadmap-item h3 { font-size: 1.1rem; }
  .roadmap-item .subtitle { font-size: 0.92rem; }
  .roadmap-detail { font-size: 0.92rem; }
  .benefit-item h4 { font-size: 1rem; }
  .benefit-item p { font-size: 0.95rem; }
  .objection-q { font-size: 1rem; }
  .objection-a { font-size: 0.95rem; }
  .anchoring-row { font-size: 1rem; }
  .anchoring-total .old-price { font-size: 1.7rem; }
  .anchoring-final .new-price { font-size: 2.6rem; }
  .anchoring-final .per-day { font-size: 0.95rem; }
  .value-item h4 { font-size: 1rem; }
  .value-item p { font-size: 0.95rem; }
  .value-item .sub { font-size: 0.85rem; }
  .value-total-num { font-size: 2.4rem; }
  .value-total-price .new { font-size: 1.6rem; }
  .proof-number { font-size: 3rem; }
  .proof-text { font-size: 1rem; }
  .commit-box h3 { font-size: 1.2rem; }
  .commit-box p { font-size: 1rem; }
  .faq-q { font-size: 1rem; }
  .faq-a { font-size: 0.95rem; }
  .order-heading { font-size: 1.3rem; }
  .countdown-box .num { font-size: 1.8rem; }
  .order-urgency { font-size: 1rem; }
  .order-form input { font-size: 1rem; }
  .combo-option strong { font-size: 1rem; }
  .order-submit { font-size: 1.15rem; padding: 20px; }
  .review-text { font-size: 1rem; }
  .review-name { font-size: 0.95rem; }
}

/* =====================================================
   SECTION 2 — PRICE BAR
   ===================================================== */
.price-bar {
  background: linear-gradient(135deg, #e53935, var(--orange));
  padding: 24px 20px;
  text-align: center;
}
.price-current {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.price-original {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  text-decoration: line-through;
  margin-top: 4px;
}
.price-badge {
  display: inline-block;
  background: #fff;
  color: #e53935;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  margin-left: 8px;
  animation: blink 1.5s infinite;
  text-decoration: none;
}
.price-urgency {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.9);
  margin-top: 10px;
}
.price-cta {
  display: inline-block;
  background: #fff;
  color: #e53935;
  padding: 10px 30px;
  border-radius: 25px;
  font-weight: 700;
  margin-top: 12px;
  font-size: 0.9rem;
  transition: transform 0.3s;
  cursor: pointer;
}
.price-cta:hover { transform: scale(1.05); }

/* =====================================================
   SECTION 3 — NỖI ĐAU
   ===================================================== */
.pain-section {
  background: var(--bg-light);
  padding: 50px 20px;
}
.pain-grid {
  max-width: 650px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.pain-card {
  background: #fff;
  border: 1px solid rgba(229,57,53,0.12);
  border-radius: 14px;
  padding: 20px 16px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: var(--shadow-sm);
}
.pain-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.pain-card .icon { font-size: 2rem; margin-bottom: 10px; }
.pain-card h4 { font-size: 0.88rem; color: var(--red); margin-bottom: 6px; }
.pain-card p { font-size: 0.8rem; color: var(--text-secondary); }

/* Pain list */
.pain-list {
  max-width: 650px;
  margin: 20px auto 0;
}
.pain-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.pain-num {
  width: 32px; height: 32px; min-width: 32px;
  border-radius: 50%;
  background: var(--red-light);
  color: var(--red);
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pain-item h4 { font-size: 0.9rem; color: var(--text-primary); font-weight: 700; margin-bottom: 4px; }
.pain-item p { font-size: 0.82rem; color: var(--text-secondary); }

/* =====================================================
   SECTION 4 — BANNER QUOTE
   ===================================================== */
.banner-highlight {
  background: linear-gradient(135deg, #c62828, #e53935);
  padding: 50px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.banner-highlight::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.05), transparent 70%);
}
.banner-quote {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  font-style: italic;
  line-height: 1.5;
  max-width: 600px;
  margin: 0 auto 16px;
  position: relative;
}
.banner-sub {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.7;
  position: relative;
}

/* =====================================================
   SECTION 5 — ĐỐI TƯỢNG
   ===================================================== */
.audience-section {
  background: var(--bg-white);
  padding: 50px 20px;
}
.audience-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  max-width: 650px;
  margin: 0 auto;
}
.audience-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.audience-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.audience-icon {
  width: 44px; height: 44px; min-width: 44px;
  border-radius: 12px;
  background: var(--red-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}
.audience-item h4 { font-size: 0.88rem; color: var(--text-primary); margin-bottom: 4px; }
.audience-item p { font-size: 0.8rem; color: var(--text-secondary); }

/* =====================================================
   SECTION 6 — KIẾN TRÚC (6 TRỤ CỘT)
   ===================================================== */
.architecture {
  background: var(--bg-light);
  padding: 50px 20px;
}
.arch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 700px;
  margin: 0 auto;
}
@media (min-width: 600px) {
  .arch-grid { grid-template-columns: 1fr 1fr 1fr; }
}
.arch-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 16px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: var(--shadow-sm);
}
.arch-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(229,57,53,0.2);
}
.arch-icon {
  width: 60px; height: 60px;
  border-radius: 50%;
  border: 3px solid var(--red);
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: var(--red-light);
}
.arch-card h4 { font-size: 0.82rem; color: var(--text-primary); margin-bottom: 4px; }
.arch-card p { font-size: 0.75rem; color: var(--text-secondary); }

/* =====================================================
   SECTION 7 — NỘI DUNG 4 BUỔI ZOOM (ROADMAP)
   ===================================================== */
.roadmap {
  background: var(--bg-white);
  padding: 50px 20px;
}
.roadmap-list {
  max-width: 650px;
  margin: 0 auto;
  position: relative;
}
.roadmap-list::before {
  content: '';
  position: absolute;
  left: 22px; top: 0; bottom: 0;
  width: 2px;
  background: rgba(229,57,53,0.15);
}
.roadmap-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 0;
  position: relative;
}
.roadmap-num {
  width: 44px; height: 44px; min-width: 44px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px rgba(229,57,53,0.3);
  z-index: 1;
}
.roadmap-item h3 { font-size: 1rem; color: var(--red); margin-bottom: 6px; }
.roadmap-item .subtitle { font-size: 0.82rem; color: var(--text-secondary); font-style: italic; margin-bottom: 8px; }
.roadmap-item p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }
.roadmap-detail {
  background: var(--red-light);
  border-left: 3px solid var(--red);
  padding: 12px 14px;
  border-radius: 0 8px 8px 0;
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.roadmap-detail ul {
  list-style: none;
  padding: 0;
}
.roadmap-detail ul li {
  padding: 3px 0 3px 18px;
  position: relative;
}
.roadmap-detail ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--red);
  font-weight: 700;
}

/* =====================================================
   SECTION 8 — 5 QUYỀN LỢI KHÁC BIỆT
   ===================================================== */
.benefits {
  background: var(--bg-light);
  padding: 50px 20px;
}
.benefit-list {
  max-width: 650px;
  margin: 0 auto;
}
.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s, padding-left 0.2s;
}
.benefit-item:hover {
  background: rgba(229,57,53,0.02);
  padding-left: 8px;
  border-radius: 8px;
}
.benefit-check {
  width: 30px; height: 30px; min-width: 30px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.benefit-item h4 { font-size: 0.88rem; color: var(--red); font-weight: 700; margin-bottom: 4px; }
.benefit-item p { font-size: 0.85rem; color: var(--text-primary); line-height: 1.6; }

/* =====================================================
   SECTION 9 — XỬ LÝ PHẢN ĐỐI
   ===================================================== */
.objections {
  background: var(--bg-white);
  padding: 50px 20px;
}
.objection-list {
  max-width: 650px;
  margin: 0 auto;
}
.objection-item {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 14px;
  transition: box-shadow 0.3s;
}
.objection-item:hover { box-shadow: var(--shadow-md); }
.objection-q {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--red);
  margin-bottom: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}
.objection-q::before {
  content: '❓';
  font-size: 1rem;
}
.objection-a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 26px;
}

/* =====================================================
   SECTION 10 — SO SÁNH GIÁ (ANCHORING)
   ===================================================== */
.anchoring {
  background: var(--bg-light);
  padding: 50px 20px;
}
.anchoring-list {
  max-width: 550px;
  margin: 0 auto;
}
.anchoring-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}
.anchoring-row .item { color: var(--text-primary); }
.anchoring-row .price { color: var(--text-muted); text-decoration: line-through; font-weight: 600; }
.anchoring-total {
  text-align: center;
  margin-top: 24px;
  padding: 20px;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}
.anchoring-total .old-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-muted);
  text-decoration: line-through;
}
.anchoring-arrow {
  text-align: center;
  font-size: 2rem;
  color: var(--red);
  margin: 16px 0;
}
.anchoring-final {
  text-align: center;
  padding: 24px;
  background: var(--red-light);
  border: 2px solid rgba(229,57,53,0.2);
  border-radius: 16px;
}
.anchoring-final .new-price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--red);
}
.anchoring-final .per-day {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* =====================================================
   SECTION 11 — VALUE STACK
   ===================================================== */
.value-stack {
  background: var(--bg-white);
  padding: 50px 20px;
}
.value-list {
  max-width: 650px;
  margin: 0 auto;
}
.value-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s, padding-left 0.2s;
}
.value-item:hover {
  background: rgba(229,57,53,0.02);
  padding-left: 8px;
  border-radius: 8px;
}
.value-check {
  width: 30px; height: 30px; min-width: 30px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.value-item h4 { font-size: 0.88rem; color: var(--red); font-weight: 700; margin-bottom: 4px; }
.value-item p { font-size: 0.85rem; color: var(--text-primary); line-height: 1.6; }
.value-item .sub { color: var(--text-muted); font-size: 0.78rem; margin-top: 4px; display: block; }

/* Value total box */
.value-total {
  max-width: 500px;
  margin: 30px auto 0;
  background: var(--red-light);
  border: 2px solid rgba(229,57,53,0.2);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
}
.value-total-label { color: var(--text-secondary); font-size: 0.85rem; }
.value-total-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--red);
  margin: 8px 0;
}
.value-total-price { font-size: 1.1rem; color: var(--text-primary); }
.value-total-price .old {
  color: var(--text-muted);
  text-decoration: line-through;
  margin-right: 8px;
}
.value-total-price .new {
  color: var(--red);
  font-weight: 800;
  font-size: 1.4rem;
}
.value-total-save {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* =====================================================
   SECTION 12 — SOCIAL PROOF
   ===================================================== */
.social-proof {
  background: var(--bg-light);
  padding: 50px 20px;
}
.proof-banner {
  max-width: 500px;
  margin: 20px auto 0;
  background: linear-gradient(135deg, var(--red), var(--orange));
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.proof-number {
  font-size: 2.5rem;
  font-weight: 800;
}
.proof-text {
  font-size: 0.9rem;
  margin-top: 6px;
  opacity: 0.9;
}

/* Feedback Gallery */
.feedback-gallery {
  max-width: 700px;
  margin: 30px auto 0;
}
.feedback-gallery h3 {
  text-align: center;
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-weight: 600;
}
.feedback-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (min-width: 768px) {
  .feedback-grid { grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
}
.feedback-img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
}
.feedback-img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-lg);
}
/* Lightbox */
.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 10001;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}
.lightbox-overlay.active {
  display: flex;
}
.lightbox-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 12px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}

/* =====================================================
   SECTION 13 — CAM KẾT
   ===================================================== */
.commitments {
  background: var(--bg-white);
  padding: 50px 20px;
}
.commit-box {
  max-width: 600px;
  margin: 0 auto;
  background: var(--green-light);
  border: 2px solid rgba(34,197,94,0.2);
  border-radius: 16px;
  padding: 30px 24px;
  text-align: center;
}
.commit-icon { font-size: 3rem; margin-bottom: 12px; }
.commit-box h3 { font-size: 1.1rem; color: var(--green); margin-bottom: 10px; }
.commit-box p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

/* =====================================================
   SECTION 14 — FAQ
   ===================================================== */
.faq {
  background: var(--bg-light);
  padding: 50px 20px;
}
.faq-list {
  max-width: 650px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  transition: box-shadow 0.3s;
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-q {
  padding: 16px 20px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s;
}
.faq-q:hover { color: var(--red); }
.faq-q::after {
  content: '+';
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--red);
  transition: transform 0.3s;
}
.faq-item.open .faq-q::after {
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding: 0 20px;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding: 0 20px 16px;
}

/* =====================================================
   SECTION 15 — COUNTDOWN + ORDER FORM
   ===================================================== */
.order-section {
  background: var(--bg-white);
  padding: 50px 20px;
}
.order-heading {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.pulse-text {
  color: var(--red);
  animation: blink 2s infinite;
}
.countdown-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}
.countdown-box {
  width: 65px; min-height: 75px;
  background: var(--red);
  color: #fff;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(229,57,53,0.3);
}
.countdown-box .num {
  font-size: 1.6rem;
  font-weight: 800;
}
.countdown-box .label {
  font-size: 0.6rem;
  text-transform: uppercase;
  opacity: 0.8;
  margin-top: 2px;
}
.order-urgency {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* Form */
.order-form {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px;
  background: var(--bg-light);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}
.order-form input[type="text"],
.order-form input[type="tel"] {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid #ddd;
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  margin-bottom: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
  color: var(--text-primary);
}
.order-form input:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(229,57,53,0.1);
}

/* Radio combo */
.combo-group { margin: 16px 0; }
.combo-option {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  border: 2px solid #eee;
  border-radius: 12px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: #fff;
}
.combo-option.selected {
  border-color: var(--red);
  background: rgba(229,57,53,0.03);
}
.combo-option input[type="radio"] { display: none; }
.combo-radio {
  width: 20px; height: 20px; min-width: 20px;
  border-radius: 50%;
  border: 2px solid #ccc;
  margin-top: 2px;
  transition: all 0.2s;
  position: relative;
}
.combo-option.selected .combo-radio {
  border-color: var(--red);
}
.combo-option.selected .combo-radio::after {
  content: '';
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--red);
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.combo-label { flex: 1; }
.combo-label strong { font-size: 0.88rem; color: var(--text-primary); }
.combo-label p { font-size: 0.78rem; color: var(--text-secondary); margin-top: 2px; }
.combo-price { font-size: 0.85rem; font-weight: 700; color: var(--red); }
.badge-hot {
  display: inline-block;
  background: #e53935;
  color: #fff;
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 6px;
  vertical-align: middle;
}
.badge-sale {
  display: inline-block;
  background: var(--orange);
  color: #fff;
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 6px;
  vertical-align: middle;
}

.order-submit {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--orange), var(--orange2));
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  box-shadow: var(--shadow-cta);
  animation: pulse 2s infinite;
  transition: transform 0.3s;
  font-family: 'Inter', sans-serif;
}
.order-submit:hover { transform: scale(1.02); }

.order-trust {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 16px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* Bank Info */
.bank-info {
  max-width: 480px;
  margin: 24px auto 0;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}
.bank-info p { text-align: center; }
.bank-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.bank-row:last-child { border-bottom: none; }
.bank-row strong { color: var(--text-primary); }

/* =====================================================
   SECTION — PLATFORM DEMO
   ===================================================== */
.platform {
  background: var(--bg-light);
  padding: 50px 20px;
}
.platform-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  max-width: 650px;
  margin: 0 auto;
}
.platform-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: transform 0.3s;
}
.platform-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.platform-item .icon {
  width: 36px; height: 36px; min-width: 36px;
  border-radius: 8px;
  background: var(--red-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.platform-item h4 { font-size: 0.85rem; color: var(--text-primary); margin-bottom: 3px; }
.platform-item p { font-size: 0.78rem; color: var(--text-secondary); }

/* =====================================================
   SECTION — TRANSFORMATION
   ===================================================== */
.transformation {
  background: var(--bg-white);
  padding: 50px 20px;
}
.transform-box {
  max-width: 600px;
  margin: 0 auto;
}
.transform-before, .transform-after {
  padding: 20px;
  border-radius: 14px;
  margin-bottom: 12px;
}
.transform-before {
  background: #fff5f5;
  border: 1px solid rgba(229,57,53,0.15);
}
.transform-after {
  background: var(--green-light);
  border: 1px solid rgba(34,197,94,0.15);
}
.transform-before h4 { color: var(--red); font-size: 0.9rem; margin-bottom: 8px; }
.transform-after h4 { color: var(--green); font-size: 0.9rem; margin-bottom: 8px; }
.transform-before p, .transform-after p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.7; }

/* =====================================================
   SECTION — REVIEWS
   ===================================================== */
.reviews {
  background: var(--bg-light);
  padding: 50px 20px;
}
.reviews-list {
  max-width: 600px;
  margin: 0 auto;
}
.review-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s;
}
.review-card:hover { box-shadow: var(--shadow-md); }
.review-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.review-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  color: #fff;
}
.review-name { font-size: 0.88rem; font-weight: 700; color: var(--text-primary); }
.review-location { font-size: 0.75rem; color: var(--text-muted); font-weight: 400; }
.review-stars { font-size: 0.8rem; color: #f59e0b; }
.review-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.7;
}
.review-reply {
  margin-top: 10px;
  margin-left: 20px;
  background: var(--red-light);
  padding: 10px 14px;
  border-radius: 10px;
  border-left: 3px solid var(--red);
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-top: 16px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.typing-dots { display: flex; gap: 4px; }
.typing-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #ccc;
  animation: bounce 1.4s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
  background: #1a1a2e;
  color: #fff;
  padding: 40px 20px 100px;
}
.footer-brand {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 14px;
  color: #fff;
}
.footer-info {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.78rem;
  margin-bottom: 16px;
}
.footer-links a {
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin: 16px 0;
}
.footer-copy {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
  text-align: center;
}

/* =====================================================
   FLOATING ELEMENTS
   ===================================================== */
/* Phone */
.float-phone {
  position: fixed;
  bottom: 90px; left: 16px;
  z-index: 9999;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 4px 15px rgba(229,57,53,0.4);
  animation: pulseRing 2s infinite;
  transition: transform 0.3s;
}
.float-phone:hover { transform: scale(1.1); }

/* Sticky CTA */
.sticky-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 9998;
  background: linear-gradient(135deg, var(--orange), var(--orange2));
  padding: 14px 20px;
  text-align: center;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  box-shadow: 0 -4px 15px rgba(0,0,0,0.15);
  cursor: pointer;
  transition: transform 0.3s;
}
.sticky-cta:hover { filter: brightness(1.05); }
.sticky-cta.hidden {
  transform: translateY(100%);
}

/* Order popup */
.order-popup {
  position: fixed;
  bottom: 80px; left: 16px;
  z-index: 9997;
  max-width: 300px;
  background: #fff;
  border-radius: 14px;
  padding: 12px 16px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateX(-120%);
  transition: transform 0.5s ease;
}
.order-popup.show { transform: translateX(0); }
.popup-avatar {
  width: 36px; height: 36px; min-width: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: #fff;
}
.popup-text {
  font-size: 0.8rem;
  color: var(--text-primary);
  line-height: 1.4;
}
.popup-text strong { color: var(--red); }
.popup-text .time { color: var(--text-muted); font-size: 0.72rem; }

@media (min-width: 768px) {
  .order-popup {
    left: auto; right: 24px;
    transform: translateX(120%);
  }
  .order-popup.show { transform: translateX(0); }
}

/* Success Modal */
.success-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 10000;
  justify-content: center;
  align-items: center;
}
.success-overlay.active {
  display: flex;
}
.success-modal {
  max-width: 350px;
  width: 90%;
  background: #fff;
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  animation: scaleIn 0.3s ease;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.success-modal h3 { color: var(--red); margin: 10px 0; font-size: 1.2rem; }
.success-modal p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }
.close-btn {
  margin-top: 16px;
  padding: 10px 30px;
  background: var(--red);
  color: #fff;
  border: none;
  border-radius: 25px;
  font-weight: 700;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: transform 0.2s;
}
.close-btn:hover { transform: scale(1.05); }

/* === VIDEO REVIEW === */
.video-review {
  margin-top: 40px;
  text-align: center;
}
.video-review h3 {
  margin-bottom: 20px;
  font-size: 1.1rem;
  color: var(--text-primary);
}
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 16px;
  border: 2px solid var(--red-light);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15), 0 0 0 4px var(--bg-white);
  max-width: 800px;
  margin: 0 auto;
  transition: transform 0.3s;
}
.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 14px;
}
.video-wrapper:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(229,57,53,0.25), 0 0 0 4px var(--bg-white);
}