:root {
  --color-primary: #0f172a;
  --color-primary-soft: #1e293b;
  --color-accent: #f59e0b;
  --color-accent-hover: #d97706;
  --color-facebook: #1877f2;
  --color-success: #16a34a;
  --color-page: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #eef2f7;
  --color-heading: #0b1220;
  --color-text: #475569;
  --color-text-soft: #64748b;
  --color-border: rgba(15, 23, 42, 0.1);
  --shadow-soft: 0 12px 30px rgba(15, 23, 42, 0.08);
  --shadow-card: 0 16px 40px rgba(15, 23, 42, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: var(--color-text);
  background:
    radial-gradient(circle at top left, rgba(245, 158, 11, 0.05), transparent 24%),
    radial-gradient(circle at top right, rgba(15, 23, 42, 0.05), transparent 26%),
    var(--color-page);
  line-height: 1.6;
}

body.menu-open {
  overflow: hidden;
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 32px 0;
}

.section-shell {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.88));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-soft);
  position: relative;
}

.section-heading {
  margin-bottom: 28px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(245, 158, 11, 0.14);
  border: 1px solid rgba(245, 158, 11, 0.22);
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-heading h2 {
  margin: 0;
  color: var(--color-heading);
  font-size: 34px;
  line-height: 1.28;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(10px);
}

.header-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: relative;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo img {
  height: 82px;
  width: auto;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.main-nav a {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary-soft);
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: var(--color-accent-hover);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 10px;
  background: var(--color-surface-alt);
  color: var(--color-primary);
  font-size: 24px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, transform 0.2s ease;
}

.menu-toggle:hover {
  background: #e2e8f0;
}

.menu-toggle:active {
  transform: scale(0.97);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 110px;
  background-image: url("../images/banner.webp");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(30, 41, 59, 0.68));
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #ffffff;
}

.hero-subtitle {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  color: #fde68a;
}

.hero-title {
  max-width: 980px;
  margin: 0 auto 16px;
  font-size: 48px;
  line-height: 1.18;
  text-wrap: balance;
}

.hero-desc {
  max-width: 820px;
  margin: 0 auto;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.92);
}

.hero-tags {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hero-hotline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 230px;
  padding: 15px 22px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-hover));
  color: #ffffff;
  font-size: 26px;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(245, 158, 11, 0.28);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero-hotline:hover {
  transform: translateY(-2px);
  opacity: 0.95;
}

.hero-points {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.hero-points span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.trust-strip {
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-soft));
  color: #ffffff;
  padding: 24px 0;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.14);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.trust-item {
  text-align: center;
  padding: 10px 8px;
}

.trust-item strong {
  display: block;
  font-size: 22px;
  margin-bottom: 6px;
  color: #ffffff;
}

.trust-item span {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 28px;
  align-items: center;
}

.about-image {
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.about-image img {
  width: 100%;
  min-height: 340px;
  object-fit: cover;
}

.about-content p {
  margin: 0 0 16px;
  font-size: 18px;
  color: var(--color-text);
}

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

.about-list li {
  margin-bottom: 10px;
  font-size: 18px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  background: rgba(255, 255, 255, 0.96);
  border-radius: 20px;
  padding: 24px;
  border: 1px solid var(--color-border);
  box-shadow:
    0 10px 30px rgba(15, 23, 42, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 18px 40px rgba(15, 23, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.card h3 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.3;
  color: var(--color-heading);
}

.card p {
  margin: 0;
  color: var(--color-text);
}

.route-main-box {
  position: relative;
  overflow: hidden;
  min-height: 430px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  background-image: url("../images/tuyenchinh.webp");
  background-size: cover;
  background-position: center;
  box-shadow:
    0 22px 50px rgba(15, 23, 42, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.route-main-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(30, 41, 59, 0.58));
}

.route-main-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 42px;
  color: #ffffff;
}

.route-title {
  margin: 0 0 14px;
  line-height: 1.2;
}

.route-title span {
  display: block;
}

.route-title span:first-child {
  font-size: 31px;
  font-weight: 700;
}

.route-title span:last-child {
  margin-top: 4px;
  font-size: 24px;
  font-weight: 600;
  color: #fde68a;
}

.route-line {
  margin: 0 0 18px;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.92);
}

.route-benefits {
  margin: 0 0 24px;
  padding-left: 20px;
}

.route-benefits li {
  margin-bottom: 10px;
}

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

.route-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 146px;
  padding: 13px 18px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.route-btn:hover {
  transform: translateY(-2px);
  opacity: 0.96;
}

.route-btn-call {
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-hover));
  color: #ffffff;
}

.route-btn-fb {
  background: var(--color-facebook);
  color: #ffffff;
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 16px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  background: #e2e8f0;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.gallery-item:hover img {
  transform: scale(1.04);
}

.gallery-item::after {
  content: "Xem ảnh";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.42);
  color: #ffffff;
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gallery-item:hover::after {
  opacity: 1;
}

.gallery-item-large {
  grid-row: span 2;
}

.gallery-item-large img {
  min-height: 456px;
}

.reason-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.reason-card {
  text-align: center;
  font-weight: 700;
  color: var(--color-heading);
}

.site-footer {
  margin-top: 40px;
  background: linear-gradient(180deg, var(--color-primary), #111827);
  color: #d7dde5;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
  padding: 56px 0 34px;
}

.footer-col h3,
.footer-col h4 {
  margin: 0 0 18px;
  line-height: 1.4;
  color: #ffffff;
}

.footer-col h3 {
  font-size: 22px;
}

.footer-col h4 {
  font-size: 18px;
}

.footer-text {
  margin: 0 0 18px;
  color: #d7dde5;
}

.footer-contact,
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-contact li,
.footer-links li {
  margin-bottom: 12px;
  line-height: 1.7;
}

.footer-contact a,
.footer-links a {
  color: #d7dde5;
  transition: color 0.2s ease;
}

.footer-contact a:hover,
.footer-links a:hover {
  color: #fde68a;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 0;
  background: rgba(255, 255, 255, 0.04);
}

.footer-bottom p {
  margin: 0;
  text-align: center;
  color: #e2e8f0;
  font-size: 14px;
}

.floating-buttons {
  position: fixed;
  right: 20px;
  bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}

.float-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 22px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.float-btn:hover {
  transform: scale(1.08);
  opacity: 0.95;
}

.call-btn {
  position: relative;
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-hover));
  color: #ffffff;
  animation: phone-ring 2.5s infinite;
  transform-origin: center;
}

.call-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.34);
  animation: pulse 2.5s infinite;
  z-index: -1;
}

.fb-btn {
  background: var(--color-facebook);
  text-transform: lowercase;
}

@keyframes phone-ring {
  0% {
    transform: rotate(0);
  }

  5% {
    transform: rotate(-12deg);
  }

  10% {
    transform: rotate(10deg);
  }

  15% {
    transform: rotate(-8deg);
  }

  20% {
    transform: rotate(6deg);
  }

  25% {
    transform: rotate(0);
  }

  100% {
    transform: rotate(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }

  70% {
    transform: scale(1.6);
    opacity: 0;
  }

  100% {
    opacity: 0;
  }
}

@media (max-width: 900px) {
  .logo img {
    height: 68px;
  }

  .hero-title {
    font-size: 40px;
  }

  .card-grid,
  .reason-grid,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .trust-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .about-layout,
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }

  .gallery-item-large {
    grid-row: span 1;
    grid-column: span 2;
  }

  .gallery-item-large img {
    min-height: 300px;
  }
}

@media (max-width: 768px) {
  .header-wrap {
    min-height: 64px;
  }

  .logo img {
    height: 62px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    pointer-events: none;
  }

  .main-nav.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .main-nav a {
    padding: 14px 12px;
    border-radius: 10px;
    font-size: 20px;
  }

  .main-nav a:hover {
    background: #f3f4f6;
    color: var(--color-accent-hover);
  }

  .hero {
    padding: 88px 0 80px;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-desc {
    font-size: 17px;
  }

  .hero-hotline {
    width: 60%;
    min-width: 0;
    font-size: 24px;
    padding: 14px 12px;
  }

  .hero-points span {
    font-size: 13px;
  }

  .section {
    padding: 28px 0;
  }

  .section-shell {
    padding: 22px;
    border-radius: 22px;
  }

  .section-heading h2 {
    font-size: 26px;
  }

  .card-grid,
  .reason-grid,
  .gallery-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .trust-strip {
    padding: 16px 0;
  }

  .trust-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .trust-item {
    padding: 8px 6px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.08);
  }

  .trust-item strong {
    font-size: 18px;
    margin-bottom: 2px;
    line-height: 1.25;
  }

  .trust-item span {
    font-size: 14px;
    line-height: 1.35;
  }

  .about-layout {
    grid-template-columns: 1fr;
  }

  .about-image img {
    min-height: 240px;
  }

  .about-content p {
    font-size: 18px;
  }

  .route-main-box {
    min-height: 380px;
  }

  .route-main-content {
    padding: 28px 22px;
  }

  .route-title span:first-child {
    font-size: 26px;
  }

  .route-title span:last-child {
    font-size: 20px;
  }

  .route-line {
    font-size: 16px;
  }

  .route-actions {
    flex-direction: column;
  }

  .route-btn {
    width: 100%;
  }

  .gallery-item-large {
    grid-column: span 1;
  }

  .gallery-item img,
  .gallery-item-large img {
    min-height: 220px;
  }

  .floating-buttons {
    right: 16px;
    bottom: 16px;
  }

  .float-btn {
    width: 52px;
    height: 52px;
    font-size: 20px;
  }
}

@media (max-width: 480px) {
  .logo img {
    height: 58px;
  }

  .hero {
    padding: 78px 0 72px;
  }

  .hero-title {
    font-size: 26px;
  }

  .hero-hotline {
    width: 100%;
    font-size: 18px;
    padding: 11px 14px;
    border-radius: 14px;
  }

  .trust-grid {
    gap: 8px;
  }

  .trust-item {
    padding: 7px 6px;
  }

  .trust-item strong {
    font-size: 15px;
  }

  .trust-item span {
    font-size: 11px;
  }
}