:root {
  --bg: #f8f1e6;
  --bg-soft: #fffaf3;
  --surface: rgba(255, 250, 243, 0.84);
  --surface-strong: #fffdf9;
  --text: #2c1f1b;
  --text-soft: #61473e;
  --accent: #a63d2f;
  --accent-dark: #7e281d;
  --gold: #d4a44f;
  --border: rgba(89, 55, 44, 0.12);
  --shadow: 0 18px 40px rgba(76, 39, 28, 0.1);
  --radius-lg: 28px;
  --radius-md: 18px;
  --container: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(212, 164, 79, 0.25), transparent 28%),
    radial-gradient(circle at top right, rgba(166, 61, 47, 0.18), transparent 32%),
    linear-gradient(180deg, #fff8ef 0%, #f7efe4 45%, #f9f3eb 100%);
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 20px;
  top: 20px;
  z-index: 1000;
  background: var(--surface-strong);
  padding: 10px 14px;
  border-radius: 12px;
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(255, 248, 239, 0.8);
  border-bottom: 1px solid var(--border);
}

.nav-wrap,
.footer-wrap,
.cta-grid,
.business-grid,
.hero-grid {
  display: grid;
  gap: 24px;
}

.nav-wrap {
  grid-template-columns: auto 1fr;
  align-items: center;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-weight: 700;
  box-shadow: var(--shadow);
}

.brand-text {
  display: grid;
  color: var(--text-soft);
}

.brand-text strong {
  color: var(--text);
  font-size: 0.98rem;
}

.brand-text small {
  font-size: 0.84rem;
}

.site-nav {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.site-nav a {
    font-weight: 600;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  color: var(--accent);
}

.nav-cta,
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 14px 22px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.nav-cta,
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #c15734);
  box-shadow: 0 14px 28px rgba(166, 61, 47, 0.24);
}

.btn-secondary {
  border: 1px solid rgba(166, 61, 47, 0.18);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text);
}

.btn:hover,
.btn:focus-visible,
.nav-cta:hover,
.nav-cta:focus-visible {
  transform: translateY(-1px);
}

.btn-block {
  width: 100%;
}

.hero-section {
  padding: 52px 0 36px;
}

.hero-grid,
.business-grid,
.cta-grid {
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
}

.hero-copy,
.hero-visual,
.business-panel,
.cta-panel,
.benefit-card,
.product-card,
.step-card,
.faq-list details {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 32px;
  border-radius: var(--radius-lg);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.82rem;
  font-weight: 800;
}

.hero-badge {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(212, 164, 79, 0.18);
  color: var(--accent-dark);
  font-size: 0.92rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.75rem);
  margin-bottom: 18px;
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.65rem);
}

h3 {
  font-size: 1.15rem;
}

.hero-lead,
.section-heading p,
.product-body p,
.benefit-card p,
.step-card p,
.business-copy p,
.faq-list p,
.cta-panel p {
  color: var(--text-soft);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0;
}

.hero-points span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--border);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 22px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.hero-visual {
  position: relative;
  padding: 18px;
  border-radius: 34px;
}

.hero-card {
  position: absolute;
  right: 32px;
  bottom: 32px;
  max-width: 280px;
  padding: 18px;
  border-radius: 22px;
  background: rgba(44, 31, 27, 0.88);
  color: #fff7ef;
}

.section {
  padding: 44px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.05));
}

.section-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

.benefit-grid,
.showcase-grid,
.steps-grid {
  display: grid;
  gap: 18px;
}

.benefit-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.benefit-card,
.step-card {
  padding: 24px;
  border-radius: 24px;
}

.showcase-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-card {
  overflow: hidden;
  border-radius: 24px;
}

.product-body {
  padding: 20px;
}

.text-link {
  font-weight: 700;
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #c15734);
  box-shadow: 0 14px 28px rgba(166, 61, 47, 0.2);
}

.check-list {
  margin: 20px 0 0;
  padding-left: 20px;
}

.check-list li {
  margin-bottom: 10px;
}

.business-panel,
.cta-panel {
  padding: 28px;
  border-radius: 28px;
}

.steps-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.step-number {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--gold);
  font-size: 1.8rem;
  font-weight: 800;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list details {
  border-radius: 18px;
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list details[open] summary {
  margin-bottom: 10px;
}

.cta-section {
  padding-bottom: 72px;
}

.site-footer {
  padding: 18px 0 80px;
  border-top: 1px solid var(--border);
}

.footer-wrap {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-soft);
}

.mobile-sticky-zalo {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  display: none;
  gap: 6px;
  flex-direction: column;
  padding: 14px 16px;
  min-width: 180px;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(135deg, #0080ff, #0061c8);
  box-shadow: 0 16px 32px rgba(0, 82, 171, 0.28);
}

@media (max-width: 1024px) {
  .hero-grid,
  .business-grid,
  .cta-grid,
  .benefit-grid,
  .showcase-grid,
  .steps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-wrap,
  .footer-wrap {
    grid-template-columns: 1fr;
  }

  .site-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .hero-grid,
  .business-grid,
  .cta-grid,
  .benefit-grid,
  .showcase-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    position: static;
  }

  .site-nav a:not(.nav-cta) {
    display: none;
  }

  .hero-copy,
  .hero-visual,
  .business-panel,
  .cta-panel,
  .benefit-card,
  .step-card,
  .faq-list details {
    padding: 20px;
  }

  .hero-card {
    position: static;
    max-width: none;
    margin-top: 16px;
  }

  .hero-actions,
  .hero-meta,
  .footer-links {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn,
  .nav-cta {
    width: 100%;
  }

  .mobile-sticky-zalo {
    display: inline-flex;
  }
}