/*
 * Beer POS — Landing Page Styles
 * Design system: unified.css (tokens + btn base) + landing overrides
 * Consistent: colors → CSS variables, buttons → .btn system
 */
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,500;0,600;0,700;0,800;0,900;1,600&display=swap');

/* ================================================================
   1. LANDING CSS VARIABLES (override POS tokens where needed)
   ================================================================ */
:root {
  /* Landing brand palette — keeps its own amber/red identity */
  --landing-yellow:      #ffcc00;
  --landing-yellow-deep: #f5b800;
  --landing-amber:       #fff3d4;
  --landing-red:         #c62828;
  --landing-red-bright:  #e53935;
  --landing-ink:         #1a1208;
  --landing-ink-soft:    #3d3428;
  --landing-muted:       #6b6358;
  --landing-radius:      16px;
  --landing-radius-xl:   24px;
  --landing-shadow:      0 4px 12px rgba(26,18,8,0.08);
}

/* ================================================================
   2. BASE RESET & BODY
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Be Vietnam Pro', system-ui, sans-serif;
  background: #fff;
  color: var(--landing-ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1120px; margin: 0 auto; padding: 0 1.25rem; }

/* ================================================================
   3. NAVIGATION
   ================================================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,249,232,0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(198,40,40,0.12);
  transition: box-shadow 0.25s;
}
.navbar.scrolled { box-shadow: var(--landing-shadow); }

.navbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px; gap: 1rem;
}

.nav-logo {
  display: flex; align-items: center; gap: 0.5rem;
  font-weight: 800; font-size: 1.05rem; color: var(--landing-ink);
  text-decoration: none; flex-shrink: 0; min-width: 0;
}
.nav-logo-img {
  width: 40px; height: 40px; border-radius: 10px; object-fit: contain; flex-shrink: 0;
  background: rgba(198,40,40,0.08);
  box-shadow: 0 2px 8px rgba(26,18,8,0.08);
}
.nav-logo .nav-logo-text { min-width: 0; }
.nav-logo small {
  display: block; font-size: 0.65rem; font-weight: 600;
  color: var(--landing-red); letter-spacing: 0.04em; text-transform: uppercase;
}

.nav-links {
  display: flex; flex-wrap: wrap; gap: 0.15rem; list-style: none;
  justify-content: flex-end; flex: 1; min-width: 0;
}
.nav-links a {
  padding: 0.4rem 0.65rem; border-radius: 10px;
  color: var(--landing-ink-soft); font-weight: 600; font-size: 0.8rem;
  text-decoration: none; transition: background 0.2s, color 0.2s;
}
.nav-links a:hover { background: rgba(255,204,0,0.35); color: var(--landing-ink); }
.mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }

/* ================================================================
   4. BUTTONS — Landing overrides (base .btn comes from unified.css)
   NOTE: unified.css loads separately and provides .btn base styles.
   These .btn-* classes override background/color/shadow for landing identity.
   ================================================================ */
.btn {
  /* Reset: landing uses inline-flex + specific sizing for marketing CTAs */
  display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem;
  padding: 0.8rem 1.35rem; border-radius: 12px;
  font-weight: 700; font-size: 0.95rem; text-decoration: none;
  border: none; cursor: pointer; font-family: inherit;
  transition: transform 0.2s, box-shadow 0.2s;
  width: auto;
  min-height: unset;
  white-space: normal;
  touch-action: manipulation;
}
.btn:active { transform: scale(0.98); }

.btn-landing-primary {
  /* CTA chính: Đỏ — dùng landing brand red */
  background: linear-gradient(135deg, var(--landing-red-bright), var(--landing-red));
  color: #fff;
  box-shadow: 0 6px 24px rgba(198,40,40,0.45);
}
.btn-landing-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(198,40,40,0.5); }

.btn-gold {
  /* CTA phụ: Vàng — dùng landing brand yellow */
  background: linear-gradient(135deg, var(--landing-yellow), var(--landing-yellow-deep));
  color: var(--landing-ink);
  box-shadow: 0 4px 20px rgba(245,184,0,0.45);
}
.btn-gold:hover { transform: translateY(-2px); }

.btn-outline {
  background: #fff; color: var(--landing-ink);
  border: 2px solid rgba(26,18,8,0.15);
}
.btn-outline:hover { border-color: var(--landing-red); color: var(--landing-red); }

/* ================================================================
   5. HERO SECTION
   ================================================================ */
.hero {
  padding: 92px 0 56px;
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, #fff9e8 0%, #fff4dc 40%, #fff 100%);
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 85% 20%, rgba(255,204,0,0.35), transparent),
    radial-gradient(ellipse 50% 40% at 10% 70%, rgba(198,40,40,0.08), transparent);
  pointer-events: none;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem;
  align-items: center; position: relative; z-index: 1;
}
.hero-kicker {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: #fff; border: 1px solid rgba(255,204,0,0.6);
  color: var(--landing-ink-soft); font-size: 0.8rem; font-weight: 700;
  padding: 0.35rem 0.9rem; border-radius: 999px; margin-bottom: 1rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.hero-kicker strong { color: var(--landing-red); }

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900; line-height: 1.08; letter-spacing: -0.03em;
  color: var(--landing-ink); margin-bottom: 0.5rem;
}
.hero h1 .line-red {
  display: block; color: var(--landing-red);
  text-shadow: 0 0 1px rgba(255,255,255,0.8);
}
.hero-sub {
  background: linear-gradient(90deg, var(--landing-red-bright), #a50000);
  color: #fff; font-weight: 800; font-size: 0.95rem;
  padding: 0.5rem 1rem; border-radius: 10px; margin-bottom: 1rem;
  display: inline-block;
}
.hero-trust {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(255,204,0,0.2);
  border: 1px solid var(--landing-yellow);
  color: var(--landing-ink-soft); font-size: 0.85rem; font-weight: 700;
  padding: 0.4rem 1rem; border-radius: 999px; margin-bottom: 1.25rem;
}
.hero-trust strong { color: var(--landing-red); }

.hero-lead {
  font-size: 1rem; color: var(--landing-muted); max-width: 32rem; margin-bottom: 1.5rem;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-bottom: 1.75rem; }
.hero-pills { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.hero-pill {
  font-size: 0.75rem; font-weight: 700;
  background: rgba(255,255,255,0.85);
  border: 1px solid rgba(26,18,8,0.08);
  padding: 0.35rem 0.75rem; border-radius: 999px; color: var(--landing-ink-soft);
}

.hero-visual-wrap {
  position: relative; display: flex; justify-content: center; align-items: center;
}
.hero-visual-bg {
  position: absolute; width: min(100%, 420px); aspect-ratio: 1;
  background: radial-gradient(circle at 40% 40%, #2a2418 0%, #0d0b08 70%);
  border-radius: 50%;
  box-shadow: inset 0 0 60px rgba(255,204,0,0.08);
}
.hero-img {
  position: relative; width: 100%; max-width: 520px;
  height: auto; object-fit: cover;
  border-radius: var(--landing-radius-xl);
  filter: drop-shadow(0 24px 40px rgba(0,0,0,0.35));
}
.hero-badge-float {
  position: absolute; top: -5%; right: 0;
  background: var(--landing-red); color: #fff;
  font-weight: 800; font-size: 0.85rem;
  padding: 0.6rem 1rem; border-radius: 10px;
  transform: rotate(8deg);
  box-shadow: 0 8px 24px rgba(198,40,40,0.4);
}
.hero-badge-hot {
  position: absolute; bottom: 15%; left: 0;
  background: linear-gradient(135deg, var(--landing-yellow), var(--landing-yellow-deep));
  color: var(--landing-ink);
  font-weight: 800; font-size: 0.75rem;
  padding: 0.5rem 0.85rem; border-radius: 10px;
  transform: rotate(-5deg);
  box-shadow: 0 6px 20px rgba(245,184,0,0.5);
}

/* ================================================================
   6. AUDIENCE BAR
   ================================================================ */
.audience {
  background: var(--landing-ink);
  color: #fdecc8;
  padding: 1.5rem 0;
}
.audience-inner {
  display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem;
  justify-content: center;
}
.audience-label { font-weight: 800; font-size: 0.85rem; color: var(--landing-yellow); }
.audience-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; }
.audience-tags span {
  background: rgba(255,204,0,0.12);
  border: 1px solid rgba(255,204,0,0.25);
  padding: 0.35rem 0.75rem; border-radius: 999px;
  font-size: 0.8rem; font-weight: 600;
}

/* ================================================================
   7. SECTIONS
   ================================================================ */
.section { padding: 4.5rem 0; }
.section-alt { background: #fff; }
.section-dark {
  background: linear-gradient(160deg, #1e1810 0%, #0f0d0a 100%);
  color: #f5f0e6;
}
.section-header { text-align: center; margin-bottom: 2.75rem; max-width: 640px; margin-left: auto; margin-right: auto; }

.eyebrow {
  display: inline-block; font-size: 0.72rem; font-weight: 800;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--landing-red); margin-bottom: 0.6rem;
}
.section-dark .eyebrow { color: var(--landing-yellow); }

.section-title {
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  font-weight: 900; line-height: 1.2; letter-spacing: -0.02em;
}
.section-sub { margin-top: 0.75rem; font-size: 1rem; color: var(--landing-muted); }
.section-dark .section-sub { color: rgba(245,240,230,0.65); }

/* ================================================================
   8. CARD SYSTEM — unified .card + landing card variants
   ================================================================ */
/* Use .card from unified.css for standard content cards */
.pricing-card {
  background: linear-gradient(135deg, var(--landing-amber), #fff9e0);
  border: 2px solid var(--landing-yellow);
  border-radius: var(--landing-radius-xl);
  padding: 2rem;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  box-shadow: 0 8px 32px rgba(255,204,0,0.2);
}
.pricing-card h3 {
  font-size: 1.35rem; font-weight: 900; margin-bottom: 1.25rem;
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
}
.pricing-list {
  list-style: none;
  display: flex; flex-direction: column; gap: 0.85rem;
  margin-bottom: 1.5rem;
}
.pricing-list li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.75rem 1rem; background: #fff;
  border-radius: 12px; font-weight: 600;
  border: 1px solid rgba(255,204,0,0.4);
}
.pricing-list li span { color: var(--landing-red); font-weight: 800; font-size: 1.1rem; }
.pricing-note {
  font-size: 0.9rem; color: var(--landing-ink-soft);
  display: flex; align-items: center; justify-content: center; gap: 0.4rem;
}

/* ================================================================
   9. PROFIT MODEL
   ================================================================ */
.profit-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem; margin-bottom: 1.5rem;
}
.profit-item {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,204,0,0.25);
  border-radius: var(--landing-radius); padding: 1.5rem;
  text-align: center;
}
.profit-item .value {
  font-size: 1.85rem; font-weight: 900; color: var(--landing-yellow);
  margin-bottom: 0.35rem;
}
.profit-item .label {
  font-size: 0.88rem; opacity: 0.85;
}
.profit-income {
  background: linear-gradient(90deg, rgba(255,204,0,0.15), rgba(198,40,40,0.15));
  border: 1px solid rgba(255,204,0,0.4);
  border-radius: var(--landing-radius); padding: 1.25rem;
  text-align: center; font-weight: 800; font-size: 1.1rem;
  color: #fff; margin-bottom: 1.5rem;
}
.profit-income strong { color: var(--landing-yellow); }

/* ================================================================
   10. SOCIAL PROOF
   ================================================================ */
.proof-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem; margin-bottom: 1.5rem;
}
.proof-card {
  background: linear-gradient(145deg, #fff9e8, #ffe8a8);
  border-radius: var(--landing-radius);
  overflow: hidden;
  box-shadow: var(--landing-shadow);
  transition: transform 0.25s;
  position: relative;
}
.proof-card:hover { transform: translateY(-4px) scale(1.02); }
.proof-card img {
  width: 100%; height: 200px; object-fit: cover;
}
.proof-card .proof-badge {
  position: absolute; top: 10px; left: 10px;
  background: var(--landing-red);
  color: #fff; font-size: 0.68rem; font-weight: 800;
  padding: 3px 8px; border-radius: 6px; letter-spacing: 0.5px;
}
.proof-card .proof-info { padding: 1rem; text-align: center; }
.proof-card .proof-label { font-weight: 800; color: var(--landing-ink-soft); font-size: 0.9rem; }
.proof-card .proof-stat { color: var(--landing-red); font-weight: 900; font-size: 1rem; }

/* ================================================================
   11. CHECKLIST / CHECK CARDS
   ================================================================ */
.check-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.check-card {
  background: #fff; border-radius: var(--landing-radius);
  padding: 1.25rem 1.35rem;
  border: 1px solid rgba(26,18,8,0.08);
  box-shadow: var(--landing-shadow);
  display: flex; gap: 0.85rem; align-items: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.check-card:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(26,18,8,0.12); }
.check-card .icon {
  flex-shrink: 0; width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--landing-yellow), #ffe566);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 1rem;
}
.check-card strong { display: block; font-size: 0.95rem; margin-bottom: 0.2rem; color: var(--landing-ink); }
.check-card p { font-size: 0.88rem; color: var(--landing-muted); line-height: 1.5; }

.highlight-bar {
  margin-top: 2rem; text-align: center;
  background: linear-gradient(90deg, transparent, rgba(255,204,0,0.35), transparent);
  padding: 1rem; border-radius: var(--landing-radius);
  font-weight: 700; color: var(--landing-ink-soft);
}

/* ================================================================
   12. PRODUCT SHOWCASE
   ================================================================ */
.product-showcase { display: flex; flex-direction: column; gap: 3.5rem; }
.product-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center;
}
.product-row.reverse { direction: rtl; }
.product-row.reverse > * { direction: ltr; }

.product-visual {
  border-radius: var(--landing-radius-xl);
  overflow: hidden;
  background: radial-gradient(circle at 30% 30%, #2a2418, #0a0908);
  min-height: 280px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--landing-shadow);
  position: relative;
}
.product-visual img {
  width: 100%; max-height: 380px; object-fit: contain; padding: 1rem;
}
.product-badge {
  position: absolute; top: 12px; left: 12px;
  background: linear-gradient(135deg, var(--landing-red-bright), var(--landing-red));
  color: #fff; font-weight: 800; font-size: 0.72rem;
  padding: 0.4rem 0.75rem; border-radius: 8px;
  box-shadow: 0 4px 12px rgba(198,40,40,0.4);
}
.product-badge.green {
  background: linear-gradient(135deg, #2e7d32, #1b5e20);
}
.product-visual.light-bg {
  background: linear-gradient(145deg, #fff9e8, #ffe8a8);
}
.product-visual.light-bg img { mix-blend-mode: multiply; }

.product-body .label-row {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.72rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--landing-red); margin-bottom: 0.5rem;
}
.product-body h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 900; margin-bottom: 0.75rem; line-height: 1.15;
}
.product-body .hook {
  font-weight: 700; color: var(--landing-red); margin-bottom: 1rem; font-size: 1rem;
}
.spec-list { list-style: none; margin: 1rem 0 1.25rem; }
.spec-list li {
  padding: 0.4rem 0; padding-left: 1.5rem; position: relative;
  font-size: 0.95rem; color: var(--landing-ink-soft);
}
.spec-list li::before {
  content: '\2713'; position: absolute; left: 0; color: #2e7d32; font-weight: 900;
}
.product-meta { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 1rem; }
.meta-chip {
  background: var(--landing-amber); border: 1px solid rgba(255,204,0,0.5);
  padding: 0.45rem 0.85rem; border-radius: 10px;
  font-size: 0.85rem; font-weight: 700; color: var(--landing-ink);
}

/* ================================================================
   13. SUPPORT & LOGISTICS
   ================================================================ */
.three-cols {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem;
}
.mini-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--landing-radius); padding: 1.35rem;
}
.mini-card h4 { font-size: 1rem; margin-bottom: 0.5rem; font-weight: 800; }
.mini-card p { font-size: 0.88rem; opacity: 0.8; line-height: 1.55; }

.support-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center;
}
.support-list { list-style: none; }
.support-list li {
  display: flex; gap: 0.75rem; align-items: flex-start;
  padding: 0.65rem 0; border-bottom: 1px solid rgba(26,18,8,0.08);
  font-size: 0.95rem;
}
.support-list li:last-child { border-bottom: none; }
.support-list .tick { color: #2e7d32; font-weight: 900; flex-shrink: 0; }
.support-photo {
  border-radius: var(--landing-radius-xl); overflow: hidden;
  box-shadow: var(--landing-shadow); border: 4px solid #fff;
}
.support-photo img { width: 100%; height: auto; display: block; object-fit: cover; }

/* ================================================================
   14. CERTS & POLICY
   ================================================================ */
.cert-row {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem;
  margin-top: 2rem;
}
.cert-badge {
  background: #fff; color: var(--landing-ink);
  padding: 1rem 1.5rem; border-radius: var(--landing-radius);
  font-weight: 800; font-size: 0.95rem;
  border: 2px solid var(--landing-yellow);
  box-shadow: var(--landing-shadow);
}

.policy-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; max-width: 720px; margin: 0 auto;
}
.policy-card {
  background: #fff9e8;
  border: 1px solid rgba(198,40,40,0.2);
  border-radius: var(--landing-radius); padding: 1.5rem; text-align: center;
}
.policy-card h4 { font-size: 1.15rem; margin-bottom: 0.35rem; color: var(--landing-red); }

/* ================================================================
   15. CTA SECTIONS
   ================================================================ */
.final-cta {
  background: linear-gradient(135deg, var(--landing-red-bright), var(--landing-red));
  color: #fff; padding: 3rem 0; text-align: center;
}
.final-cta h2 { font-size: 1.5rem; margin-bottom: 1rem; }
.final-cta p { font-size: 1rem; margin-bottom: 1.5rem; line-height: 1.8; }
.final-cta p strong { display: block; font-size: 1.05rem; margin-bottom: 0.25rem; }

.cta-strong {
  background: linear-gradient(135deg, var(--landing-red-bright), #8b0000);
  color: #fff; padding: 3rem 1.5rem; text-align: center;
  border-radius: var(--landing-radius-xl); margin: 0 1.25rem;
  position: relative; overflow: hidden;
}
.cta-strong::after {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='3' cy='3' r='1.5' fill='%23ffffff' fill-opacity='0.06'/%3E%3C/svg%3E");
  pointer-events: none;
}
.cta-strong h2 { font-size: clamp(1.35rem, 3vw, 1.85rem); font-weight: 900; margin-bottom: 0.75rem; position: relative; z-index: 1; }
.cta-strong p { opacity: 0.95; margin-bottom: 1.25rem; max-width: 520px; margin-left: auto; margin-right: auto; position: relative; z-index: 1; }
.cta-strong .btn-gold { position: relative; z-index: 1; color: var(--landing-ink); }

/* ================================================================
   16. CONTACT & MAP
   ================================================================ */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: stretch;
}
.contact-card {
  background: #fff; border-radius: var(--landing-radius-xl);
  padding: 1.5rem; border: 1px solid rgba(26,18,8,0.08);
  box-shadow: var(--landing-shadow);
}
.contact-card a.phone {
  font-size: 1.75rem; font-weight: 900; color: var(--landing-red);
  text-decoration: none; display: inline-block; margin: 0.5rem 0;
}
.contact-card a.phone:hover { text-decoration: underline; }
.contact-bullets { list-style: none; margin-top: 1rem; }
.contact-bullets li { padding: 0.35rem 0; font-size: 0.95rem; color: var(--landing-muted); }
.contact-bullets li::before { content: '\2192 '; color: var(--landing-red); font-weight: 800; }
.map-wrap {
  border-radius: var(--landing-radius-xl); overflow: hidden; min-height: 280px;
  border: 1px solid rgba(26,18,8,0.1);
}
.map-wrap iframe { width: 100%; height: 100%; min-height: 320px; border: 0; }

/* ================================================================
   17. FOOTER
   ================================================================ */
.footer {
  background: var(--landing-ink); color: rgba(255,255,255,0.45);
  padding: 2rem 0; text-align: center; font-size: 0.82rem;
}
.footer strong { color: var(--landing-yellow); }

/* ================================================================
   18. BRAND STRIP
   ================================================================ */
.brand-strip {
  padding: 2rem 0; background: #fff;
  border-top: 1px solid rgba(26,18,8,0.06);
  border-bottom: 1px solid rgba(26,18,8,0.06);
}
.brand-strip-inner {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 2rem; align-items: center;
}
.brand-strip img {
  width: 100%; max-height: 320px; object-fit: contain; border-radius: var(--landing-radius);
}
.brand-strip p { font-size: 0.95rem; color: var(--landing-muted); margin-top: 0.75rem; }

/* ================================================================
   19. STICKY CTA
   ================================================================ */
.sticky-cta {
  position: fixed; bottom: 20px; right: 20px; z-index: 999;
  display: flex; flex-direction: column; gap: 10px;
}
.sticky-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px; border-radius: 50px;
  font-weight: 800; font-size: 0.85rem; text-decoration: none;
  box-shadow: 0 6px 24px rgba(0,0,0,0.2);
  transition: transform 0.2s, box-shadow 0.2s;
}
.sticky-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 32px rgba(0,0,0,0.25); }
.sticky-btn.call {
  background: linear-gradient(135deg, var(--landing-red-bright), var(--landing-red));
  color: #fff;
}
.sticky-btn.zalo {
  background: linear-gradient(135deg, #0068ff, #004ec2);
  color: #fff;
}
.sticky-btn.zalo::after {
  content: "HOT";
  background: #ffcc00; color: #000;
  font-size: 10px; font-weight: 800;
  padding: 2px 6px; border-radius: 6px; margin-left: 6px;
}

/* ================================================================
   20. REVEAL ANIMATIONS (reduced — no overdesign)
   ================================================================ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Pulse for sticky buttons */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}
.btn-pulse { animation: pulse 2s ease-in-out infinite; }
.btn-pulse:hover { animation: none; }

/* ================================================================
   21. RESPONSIVE
   ================================================================ */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 64px; left: 0; right: 0; background: #fff9e8;
    padding: 0.75rem 1rem; border-bottom: 1px solid rgba(198,40,40,0.15);
    box-shadow: var(--landing-shadow);
  }
  .mobile-menu-btn { display: block; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-lead { margin-left: auto; margin-right: auto; }
  .hero-ctas { justify-content: center; }
  .hero-pills { justify-content: center; }
  .hero-visual-wrap { order: -1; }
  .hero-badge-float { right: 5%; }
  .hero-badge-hot { left: 5%; }
  .product-row, .product-row.reverse { grid-template-columns: 1fr; direction: ltr; }
  .three-cols { grid-template-columns: 1fr; }
  .support-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .policy-grid { grid-template-columns: 1fr; }
  .brand-strip-inner { grid-template-columns: 1fr; text-align: center; }
  .cta-strong { margin: 0; border-radius: var(--landing-radius); }
  .proof-grid { grid-template-columns: 1fr; }
  .sticky-cta { bottom: 15px; right: 15px; }
  .sticky-btn { padding: 10px 14px; font-size: 0.8rem; }
}

/* ================================================================
   22. CHATBOT WIDGET — Zalo-style (kept as-is, distinctive brand element)
   ================================================================ */
.chat-fab {
  position: fixed; bottom: 156px; right: 20px; z-index: 9998;
  display: flex; align-items: center; gap: 8px;
  background: var(--landing-red-bright); color: #fff;
  padding: 10px 16px; border-radius: 28px;
  font-weight: 700; font-size: 0.88rem;
  box-shadow: 0 4px 16px rgba(211,47,47,0.45);
  cursor: pointer; border: none;
  animation: fabBounce 2.4s ease-in-out infinite;
  transition: transform 0.15s, background 0.15s;
}
.chat-fab:hover { background: #b71c1c; transform: scale(1.04); }
.chat-fab .fab-icon { font-size: 1.2rem; flex-shrink: 0; }

@keyframes fabBounce {
  0%, 100% { transform: translateY(0); }
  15% { transform: translateY(-5px); }
  35% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
  70% { transform: translateY(0); }
}

.chat-box {
  position: fixed; bottom: 218px; right: 20px; z-index: 9999;
  width: 320px; height: 460px;
  background: #fff; border-radius: 16px;
  box-shadow: 0 12px 48px rgba(0,0,0,0.18), 0 0 0 1px rgba(0,0,0,0.06);
  display: flex; flex-direction: column; overflow: hidden;
  transform: scale(0.85) translateY(20px);
  opacity: 0; pointer-events: none;
  transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1), opacity 0.2s;
}
.chat-box.open {
  transform: scale(1) translateY(0);
  opacity: 1; pointer-events: all;
}

.chat-header {
  background: linear-gradient(135deg, var(--landing-red-bright), var(--landing-red));
  color: #fff; padding: 14px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-shrink: 0;
}
.chat-header-info { display: flex; align-items: center; gap: 10px; }
.chat-header-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0;
}
.chat-header-name { font-weight: 700; font-size: 0.92rem; }
.chat-header-sub { font-size: 0.72rem; opacity: 0.85; }
.chat-close {
  background: rgba(255,255,255,0.2); border: none; color: #fff;
  width: 28px; height: 28px; border-radius: 50%;
  cursor: pointer; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: background 0.15s;
}
.chat-close:hover { background: rgba(255,255,255,0.35); }

.chat-body {
  flex: 1; overflow-y: auto; padding: 14px 12px;
  display: flex; flex-direction: column; gap: 10px;
  scroll-behavior: smooth; background: #f5f5f5;
}
.chat-body::-webkit-scrollbar { width: 4px; }
.chat-body::-webkit-scrollbar-thumb { background: #ccc; border-radius: 4px; }

.chat-msg {
  max-width: 88%; padding: 10px 13px; border-radius: 14px;
  font-size: 0.85rem; line-height: 1.5;
  animation: msgIn 0.3s cubic-bezier(0.34,1.56,0.64,1);
  white-space: pre-line;
}
@keyframes msgIn {
  from { opacity: 0; transform: scale(0.85) translateY(6px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.chat-msg.bot {
  background: #fff; color: #222; border-bottom-left-radius: 4px;
  align-self: flex-start; box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.chat-msg.user {
  background: var(--landing-red-bright); color: #fff;
  border-bottom-right-radius: 4px; align-self: flex-end;
}

.chat-typing {
  display: flex; align-items: center; gap: 4px; padding: 8px 14px;
  background: #fff; border-radius: 14px; align-self: flex-start;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08); max-width: 56px;
}
.chat-typing-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #aaa; animation: typingBounce 1.2s ease-in-out infinite;
}
.chat-typing-dot:nth-child(2) { animation-delay: 0.15s; }
.chat-typing-dot:nth-child(3) { animation-delay: 0.3s; }
@keyframes typingBounce {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(-5px); opacity: 1; }
}

.chat-replies {
  display: flex; flex-direction: column; gap: 8px;
  padding: 4px 12px 12px; background: #f5f5f5; flex-shrink: 0;
}
.chat-reply-btn {
  background: #fff; border: 1.5px solid #e0e0e0; border-radius: 20px;
  padding: 9px 16px; font-size: 0.85rem; font-weight: 600;
  color: var(--landing-red-bright); cursor: pointer; transition: all 0.15s; text-align: center;
}
.chat-reply-btn:hover {
  background: var(--landing-red-bright); border-color: var(--landing-red-bright);
  color: #fff; transform: translateX(3px);
}

.chat-cta-wrap {
  padding: 10px 12px 12px; background: #f5f5f5; flex-shrink: 0;
}
.chat-cta-btn {
  display: block;
  background: linear-gradient(135deg, var(--landing-red-bright), var(--landing-red));
  color: #fff; text-align: center;
  padding: 12px 16px; border-radius: 24px;
  font-weight: 700; font-size: 0.88rem; text-decoration: none;
  transition: all 0.15s; box-shadow: 0 4px 12px rgba(211,47,47,0.35);
}
.chat-cta-btn:hover {
  transform: translateY(-1px); box-shadow: 0 6px 18px rgba(211,47,47,0.45);
}

/* ================================================================
   23. MOBILE BOTTOM SHEET
   ================================================================ */
@media (max-width: 480px) {
  .chat-fab { bottom: 132px; right: 12px; }
  .chat-box {
    bottom: 0; right: 0; left: 0;
    width: 100%; height: 80vh;
    border-bottom-left-radius: 0; border-bottom-right-radius: 0;
    transform: translateY(100%);
  }
  .chat-box.open { transform: translateY(0); }
}