/* ===== Design tokens ===== */
:root {
  --green-900: #063d2b;
  --green-800: #0a5c3e;
  --green-700: #0e7a52;
  --green-600: #0e9f6e;
  --green-500: #16b881;
  --green-100: #e6f7ef;
  --ink-900: #0b1720;
  --ink-700: #33424a;
  --ink-500: #5b6b73;
  --paper: #ffffff;
  --paper-alt: #f4f9f6;
  --border: #e1ebe5;
  --gold: #f5a623;
  --shadow-sm: 0 2px 8px rgba(6, 61, 43, 0.08);
  --shadow-md: 0 8px 24px rgba(6, 61, 43, 0.12);
  --shadow-lg: 0 20px 48px rgba(6, 61, 43, 0.18);
  --radius: 16px;
  --radius-sm: 10px;
  --container: 1180px;
  --font: 'Be Vietnam Pro', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink-900);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.2; font-weight: 700; }
p { margin: 0 0 1em; color: var(--ink-700); }
svg { width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; opacity: 0; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--green-600); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--green-700); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--green-800); border-color: var(--border); }
.btn--ghost:hover { border-color: var(--green-600); }
.btn--outline { background: transparent; color: var(--green-700); border-color: var(--green-600); }
.btn--outline:hover { background: var(--green-100); }
.btn--outline-light { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.6); backdrop-filter: blur(4px); }
.btn--outline-light:hover { background: rgba(255,255,255,.18); }
.btn--lg { padding: 15px 28px; font-size: 16px; }
.btn--block { width: 100%; justify-content: center; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--green-500), var(--green-800));
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: .5px;
  flex-shrink: 0;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__text strong { font-size: 16px; color: var(--green-900); letter-spacing: .3px; }
.brand__text small { font-size: 12px; color: var(--ink-500); letter-spacing: 1.5px; }

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { font-weight: 500; font-size: 15px; color: var(--ink-700); transition: color .15s; }
.main-nav a:hover { color: var(--green-700); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink-900); margin: 0 auto; transition: .2s; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; }
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(115deg, rgba(6,42,29,.92) 0%, rgba(8,60,42,.82) 45%, rgba(10,70,48,.55) 100%);
}
.hero__content { position: relative; z-index: 1; padding: 80px 24px 96px; max-width: 720px; }
.pill {
  display: inline-flex;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.25);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  letter-spacing: .5px;
  margin-bottom: 16px;
  text-shadow: 0 2px 16px rgba(0,0,0,.25);
}
.hero__lead { font-size: 17px; color: rgba(255,255,255,.9); max-width: 560px; margin-bottom: 32px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero__phone-card {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 24px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(6px);
  width: fit-content;
}
.hero__phone-label { font-size: 13px; color: rgba(255,255,255,.75); }
.hero__phone-number { font-size: 26px; font-weight: 800; letter-spacing: 1px; color: #fff; }

/* ===== Stats ===== */
.stats { background: var(--green-900); color: #fff; padding: 40px 0; }
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat { display: flex; flex-direction: column; align-items: center; }
.stat__num, .stat__suffix { font-size: clamp(28px, 4vw, 40px); font-weight: 800; color: var(--gold); display: inline; }
.stat__label { margin-top: 6px; font-size: 14px; color: rgba(255,255,255,.8); }

/* ===== Sections ===== */
.section { padding: 84px 0; }
.section--alt { background: var(--paper-alt); }
.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--green-700);
  background: var(--green-100);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.eyebrow--light { background: rgba(255,255,255,.15); color: #fff; }
.section-head h2 { font-size: clamp(24px, 3.5vw, 34px); color: var(--green-900); }
.section-head p { font-size: 16px; }

.grid { display: grid; gap: 24px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

/* Cards */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card__icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: var(--green-100);
  font-size: 24px;
  margin-bottom: 16px;
}
.card h3 { font-size: 18px; color: var(--green-900); }
.card p { font-size: 14.5px; margin-bottom: 0; }

/* Services */
.service {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
.service:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.service__icon { font-size: 30px; margin-bottom: 14px; }
.service h3 { font-size: 18px; color: var(--green-900); }
.service p { font-size: 14.5px; }
.service__link { font-weight: 600; color: var(--green-700); font-size: 14.5px; }
.service__link:hover { text-decoration: underline; }

/* Pricing */
.table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.price-table { width: 100%; border-collapse: collapse; min-width: 480px; background: #fff; }
.price-table th, .price-table td { padding: 16px 20px; text-align: left; font-size: 15px; }
.price-table thead th { background: var(--green-800); color: #fff; font-weight: 700; }
.price-table tbody tr:nth-child(even) { background: var(--paper-alt); }
.price-table tbody td:first-child { font-weight: 600; color: var(--green-900); }
.price-note { font-size: 14px; margin-top: 14px; color: var(--ink-500); }
.price-note a { color: var(--green-700); font-weight: 600; }

.cta-banner {
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: linear-gradient(120deg, var(--green-700), var(--green-900));
  color: #fff;
  border-radius: var(--radius);
  padding: 36px 40px;
  box-shadow: var(--shadow-lg);
}
.cta-banner h3 { font-size: 22px; margin-bottom: 6px; }
.cta-banner p { color: rgba(255,255,255,.85); margin: 0; }
.cta-banner__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Route cards */
.route-card {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--green-600);
  border-radius: var(--radius-sm);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
}
.route-card h3 { font-size: 16.5px; color: var(--green-900); margin-bottom: 6px; }
.route-card p { font-size: 14px; margin-bottom: 10px; }
.route-card__price { font-weight: 700; color: var(--green-700); font-size: 14.5px; }

/* Fleet / about */
.fleet__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.fleet__images { position: relative; }
.fleet__img--main { border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.fleet__img--sub {
  position: absolute;
  bottom: -28px;
  right: -28px;
  width: 45%;
  border-radius: var(--radius-sm);
  border: 5px solid #fff;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 1/1;
  object-fit: cover;
}
.fleet__content h2 { color: var(--green-900); font-size: clamp(24px, 3.5vw, 32px); }
.checklist { margin: 20px 0 28px; display: flex; flex-direction: column; gap: 12px; }
.checklist li { list-style: none; display: flex; gap: 10px; font-size: 15px; color: var(--ink-700); }
.checklist li::before { content: "✓"; color: var(--green-600); font-weight: 800; flex-shrink: 0; }

/* Testimonials */
.testimonial {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.testimonial p { font-style: italic; color: var(--ink-900); font-size: 15px; }
.testimonial__author { display: flex; flex-direction: column; border-top: 1px solid var(--border); padding-top: 12px; margin-top: 8px; }
.testimonial__author strong { color: var(--green-900); font-size: 14.5px; }
.testimonial__author span { font-size: 13px; color: var(--ink-500); }

/* Contact */
.contact { background: linear-gradient(160deg, var(--green-900), var(--green-800)); color: #fff; }
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact h2 { font-size: clamp(24px, 3.5vw, 32px); }
.contact__info p { color: rgba(255,255,255,.85); }
.contact__methods { display: flex; flex-direction: column; gap: 16px; margin-top: 28px; }
.contact__method {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  transition: background .2s;
}
.contact__method:hover { background: rgba(255,255,255,.15); }
.contact__method-icon { font-size: 22px; }
.contact__method strong { display: block; font-size: 13px; color: rgba(255,255,255,.7); }

.contact__form {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  color: var(--ink-900);
  box-shadow: var(--shadow-lg);
}
.contact__form h3 { color: var(--green-900); font-size: 20px; }
.form-row { margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 13.5px; font-weight: 600; color: var(--ink-700); }
.form-row input, .form-row textarea {
  font-family: inherit;
  font-size: 15px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--paper-alt);
  color: var(--ink-900);
  resize: vertical;
}
.form-row input:focus, .form-row textarea:focus { outline: 2px solid var(--green-500); background: #fff; }
.form-hint { font-size: 13px; color: var(--ink-500); text-align: center; margin: 14px 0 0; }
.form-hint a { color: var(--green-700); font-weight: 600; }

/* Footer */
.site-footer { background: #06231a; color: rgba(255,255,255,.75); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.6fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,.1); }
.brand--footer .brand__text strong { color: #fff; }
.brand--footer .brand__text small { color: rgba(255,255,255,.6); }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col a { display: block; padding: 6px 0; font-size: 14.5px; color: rgba(255,255,255,.7); transition: color .15s; }
.footer-col a:hover { color: #fff; }
.footer-col p { font-size: 14px; margin-top: 16px; color: rgba(255,255,255,.6); }
.footer-social { display: flex; gap: 10px; margin-top: 18px; }
.footer-social a {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  padding: 0;
}
.footer-social a:hover { background: var(--green-600); }
.footer-phone { font-size: 20px; font-weight: 800; color: var(--gold) !important; padding: 0 0 8px !important; }
.footer-col--about p { font-size: 13px; line-height: 1.7; color: rgba(255,255,255,.55); margin-top: 0; }
.footer-col--about strong { color: rgba(255,255,255,.85); }
.footer-bottom { padding: 22px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,.5); }

/* FAB + mobile call bar */
.fab-call {
  position: fixed;
  right: 20px;
  bottom: 84px;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--green-600);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-lg);
  z-index: 60;
  animation: pulse 2.4s infinite;
}
.fab-call svg { width: 24px; height: 24px; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(14,159,110,.5), var(--shadow-lg); }
  70% { box-shadow: 0 0 0 14px rgba(14,159,110,0), var(--shadow-lg); }
  100% { box-shadow: 0 0 0 0 rgba(14,159,110,0), var(--shadow-lg); }
}
.mobile-callbar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 60;
  background: #fff;
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 16px rgba(0,0,0,.08);
}
.mobile-callbar__btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 0;
  font-weight: 700;
  font-size: 15px;
}
.mobile-callbar__btn--call { background: var(--green-600); color: #fff; }
.mobile-callbar__btn--zalo { background: #fff; color: var(--green-800); }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .fleet__grid, .contact__grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .main-nav { display: none; }
  .header-actions .btn--ghost { display: none; }
  .nav-toggle { display: flex; }
  .main-nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 76px; left: 0; right: 0;
    background: #fff;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    gap: 4px;
  }
  .main-nav.is-open a { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .mobile-callbar { display: flex; }
  body { padding-bottom: 58px; }
  .fab-call { bottom: 74px; }
}

@media (max-width: 640px) {
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .grid--3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero__content { padding: 56px 20px 72px; }
  .hero__cta .btn { flex: 1; justify-content: center; }
  .cta-banner { flex-direction: column; align-items: flex-start; }
  .fleet__img--sub { display: none; }
}