:root {
  --ink: #121923;
  --muted: #6b7788;
  --line: #e5ebf1;
  --brand: #11999e;
  --brand-dark: #08777d;
  --accent: #d7ff55;
  --paper: #ffffff;
  --soft: #f7fafb;
  --soft-tint: #eef8f7;
  --shadow: 0 18px 50px rgba(18, 25, 35, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.84);
  border-bottom: 1px solid rgba(229, 235, 241, 0.9);
  backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: white;
  background: linear-gradient(135deg, var(--brand), #22c1a2);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(17, 153, 158, 0.22);
}

.nav {
  display: flex;
  gap: clamp(16px, 3vw, 34px);
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
}

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

.header-action,
.primary-btn,
.secondary-btn,
.booking-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 0;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.header-action,
.primary-btn,
.booking-form button {
  color: white;
  background: linear-gradient(135deg, var(--brand), #16b7a0);
  box-shadow: 0 14px 30px rgba(17, 153, 158, 0.2);
}

.secondary-btn {
  color: var(--ink);
  background: white;
}

.header-action:hover,
.primary-btn:hover,
.secondary-btn:hover,
.booking-form button:hover {
  transform: translateY(-1px);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 120px clamp(20px, 7vw, 96px) 72px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 18, 26, 0.72), rgba(10, 18, 26, 0.34), rgba(10, 18, 26, 0.06)),
    url("https://images.unsplash.com/photo-1494515843206-f3117d3f51b7?auto=format&fit=crop&w=1800&q=80");
  background-position: center;
  background-size: cover;
  transform: scale(1.02);
}

.hero-content {
  position: relative;
  max-width: 660px;
  color: white;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.split-section h2,
.booking-section h2 {
  margin: 0;
  line-height: 1.12;
}

.hero h1 {
  font-size: clamp(52px, 9vw, 106px);
  font-weight: 900;
}

.hero-copy {
  max-width: 590px;
  margin: 22px 0 30px;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(18px, 2vw, 23px);
}

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

.section,
.split-section,
.booking-section {
  padding: 80px clamp(20px, 7vw, 96px);
  background: var(--paper);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 30px;
}

.section-heading h2,
.split-section h2,
.booking-section h2 {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 900;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.card {
  min-height: 218px;
  padding: 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 38px rgba(18, 25, 35, 0.04);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(17, 153, 158, 0.28);
  box-shadow: var(--shadow);
}

.icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--brand-dark);
  background: var(--soft-tint);
  border-radius: 8px;
  font-weight: 800;
}

.card h3 {
  margin: 22px 0 8px;
}

.card p,
.split-section p,
.booking-section p,
.site-footer p {
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.9fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
  background: var(--soft-tint);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.metrics div {
  padding: 18px;
  border-left: 4px solid var(--brand);
  background: white;
  border-radius: 8px;
  box-shadow: 0 14px 30px rgba(18, 25, 35, 0.05);
}

.metrics strong,
.metrics span {
  display: block;
}

.metrics strong {
  font-size: 24px;
}

.metrics span {
  color: var(--muted);
  font-size: 14px;
}

.fleet-panel {
  display: grid;
  gap: 14px;
}

.car-card {
  min-height: 110px;
  padding: 22px;
  color: white;
  background:
    linear-gradient(135deg, rgba(17, 153, 158, 0.96), rgba(18, 25, 35, 0.94)),
    repeating-linear-gradient(90deg, transparent 0 28px, rgba(255, 255, 255, 0.06) 28px 29px);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.car-card-main {
  min-height: 220px;
  background:
    linear-gradient(135deg, rgba(18, 25, 35, 0.34), rgba(17, 153, 158, 0.72)),
    url("https://images.unsplash.com/photo-1550355291-bbee04a92027?auto=format&fit=crop&w=1200&q=80");
  background-size: cover;
  background-position: center;
}

.car-card span,
.car-card strong {
  display: block;
}

.car-card strong {
  margin-top: 8px;
  font-size: 22px;
}

.safety-band {
  background: #121923;
  color: white;
}

.safety-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.safety-list div {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.booking-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: clamp(30px, 7vw, 88px);
  align-items: start;
}

.booking-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.booking-form label {
  display: grid;
  gap: 8px;
  font-weight: 700;
}

.booking-form input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
  font: inherit;
}

.booking-form input:focus {
  outline: 3px solid rgba(17, 153, 158, 0.12);
  border-color: var(--brand);
  background: white;
}

.form-note {
  margin: 0;
  font-size: 14px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(20px, 7vw, 96px);
  background: #121923;
  color: white;
}

.site-footer a {
  display: block;
  text-align: right;
}

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

  .service-grid,
  .safety-list,
  .split-section,
  .booking-section {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 560px) {
  .site-header {
    padding: 12px 16px;
  }

  .header-action {
    display: none;
  }

  .hero {
    min-height: 88vh;
  }

  .section,
  .split-section,
  .booking-section {
    padding: 58px 18px;
  }

  .site-footer {
    display: grid;
  }

  .site-footer a {
    text-align: left;
  }
}