:root {
  --bg: #f7f4ef;
  --bg-alt: #fff6ea;
  --text: #1f2937;
  --muted: #475569;
  --brand: #e23b2f;
  --brand-dark: #b92c22;
  --accent: #ffb300;
  --teal: #0f766e;
  --card: #ffffff;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, #fff8f1 0%, #f5f2ec 45%, #fff 100%);
}

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

img {
  max-width: 100%;
  display: block;
  border-radius: 16px;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.topbar__wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

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

.brand__mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  font-weight: 800;
  display: grid;
  place-items: center;
  letter-spacing: 1px;
}

.brand__name {
  font-weight: 800;
}

.brand__tag {
  font-size: 12px;
  color: var(--muted);
}

.topbar__nav {
  display: flex;
  gap: 16px;
  font-weight: 600;
  color: var(--muted);
}

.topbar__nav a:hover {
  color: var(--brand);
}

.topbar__cta {
  display: flex;
  gap: 10px;
}

.btn {
  padding: 12px 18px;
  border-radius: 999px;
  border: 2px solid transparent;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
}

.btn--primary {
  background: var(--brand);
  color: #fff;
}

.btn--ghost {
  border-color: var(--brand);
  color: var(--brand);
  background: transparent;
}

.btn--zalo {
  background: #1e88e5;
  color: #fff;
}

.hero {
  padding: 64px 0 40px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -120px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(255, 179, 0, 0.25), transparent 70%);
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: center;
}

.hero__eyebrow {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--teal);
}

.hero h1 {
  font-family: "Bebas Neue", "Be Vietnam Pro", sans-serif;
  font-size: clamp(36px, 4vw, 54px);
  margin: 12px 0 16px;
  letter-spacing: 1px;
}

.hero__sub {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.hero__cases {
  margin: 10px 0 0;
  font-size: 16px;
  color: var(--muted);
  line-height: 1.6;
}

.hero__quick {
  list-style: none;
  padding: 0;
  margin: 18px 0 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero__quick li {
  background: #fff;
  padding: 10px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  font-weight: 600;
  font-size: 14px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0;
}

.hero__stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.stat {
  background: var(--card);
  border-radius: 14px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}

.stat__value {
  font-size: 22px;
  font-weight: 800;
}

.stat__label {
  font-size: 13px;
  color: var(--muted);
}

.hero__card {
  background: var(--card);
  padding: 14px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}

.hero__badge {
  position: absolute;
  left: 20px;
  bottom: 20px;
  background: rgba(226, 59, 47, 0.95);
  color: #fff;
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 600;
}

.hero__note {
  margin-top: 14px;
  padding: 12px 14px;
  border-left: 3px solid var(--brand);
  background: rgba(226, 59, 47, 0.08);
  border-radius: 10px;
  font-size: 14px;
}

.section {
  padding: 56px 0;
}

.section--alt {
  background: var(--bg-alt);
}

.section h2 {
  font-size: clamp(26px, 3vw, 34px);
  margin-bottom: 16px;
}

.section__lead {
  color: var(--muted);
  margin-bottom: 24px;
}

.reason-grid,
.service-grid,
.process,
.area-grid,
.commit-grid {
  display: grid;
  gap: 16px;
}

.reason-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.reason {
  background: var(--card);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
  position: relative;
  padding-left: 42px;
}

.reason::before {
  content: "✓";
  position: absolute;
  left: 16px;
  top: 16px;
  color: var(--brand);
  font-weight: 900;
}

.reason h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.reason p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.service-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.service {
  background: var(--card);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.service h3 {
  margin-top: 0;
}

.service__list,
.commit__list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 8px;
}

.service__list li,
.commit__list li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.5;
}

.service__list li::before,
.commit__list li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--brand);
  font-weight: 800;
}

.process {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.process__step {
  background: var(--card);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.process__step p {
  margin: 0 0 8px;
  color: var(--muted);
  line-height: 1.6;
}

.process__step p:last-child {
  margin-bottom: 0;
}

.process__num {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent);
  color: #000;
  font-weight: 800;
  display: grid;
  place-items: center;
  margin-bottom: 12px;
}

.price-table {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.price-row {
  display: flex;
  justify-content: space-between;
  padding: 14px 18px;
  background: #fff;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.price-row--head {
  background: var(--brand);
  color: #fff;
  font-weight: 700;
}

.note {
  margin-top: 12px;
  color: var(--muted);
}

.note--strong {
  font-weight: 600;
}

.price__desc,
.section__desc {
  margin-bottom: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.area-grid {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.area {
  background: var(--card);
  padding: 12px 14px;
  border-radius: 999px;
  text-align: center;
  font-weight: 600;
  box-shadow: var(--shadow);
}

.commit-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.commit {
  background: var(--card);
  padding: 18px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.faq details {
  background: var(--card);
  padding: 16px 18px;
  border-radius: 14px;
  box-shadow: var(--shadow);
  margin-bottom: 12px;
}

.faq summary {
  font-weight: 700;
  cursor: pointer;
}

.cta {
  padding: 60px 0;
  background: linear-gradient(135deg, #ffefda 0%, #fff3e6 60%, #fff 100%);
}

.cta__grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer {
  background: #111827;
  color: #f8fafc;
  padding: 36px 0;
}

.footer__grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.footer__brand {
  font-weight: 800;
  font-size: 18px;
}

.footer__label {
  font-size: 13px;
  color: #cbd5f5;
}

.footer__phone {
  display: inline-block;
  margin: 8px 0;
  font-size: 20px;
  font-weight: 800;
}

.footer__note {
  color: #cbd5f5;
  font-size: 14px;
}

.sticky-cta {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  display: none;
  gap: 10px;
  z-index: 50;
}

.sticky-cta a {
  flex: 1;
  text-align: center;
  padding: 12px;
  border-radius: 999px;
  font-weight: 800;
  color: #fff;
}

.sticky-cta__call {
  background: var(--brand);
}

.sticky-cta__zalo {
  background: #1e88e5;
}

@media (max-width: 900px) {
  .topbar__nav {
    display: none;
  }

  .hero__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .topbar__cta {
    display: none;
  }

  .sticky-cta {
    display: flex;
  }
}