:root {
  --ink: #17201f;
  --muted: #5d6864;
  --line: #d7dfdb;
  --paper: #f7f9f7;
  --white: #ffffff;
  --teal: #087f7a;
  --teal-deep: #075f5c;
  --amber: #c68a2d;
  --charcoal: #24302e;
  --shadow: 0 18px 50px rgba(18, 32, 30, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    "Noto Sans TC",
    "Microsoft JhengHei",
    "PingFang TC",
    "Segoe UI",
    Arial,
    sans-serif;
  line-height: 1.65;
}

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

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 56px);
  color: var(--white);
  background: linear-gradient(180deg, rgba(12, 19, 18, 0.76), rgba(12, 19, 18, 0.16));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.14);
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 15px;
  line-height: 1.2;
}

.brand small {
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 12px;
}

.nav {
  display: flex;
  gap: 20px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
  white-space: nowrap;
}

.nav a {
  padding: 6px 0;
  border-bottom: 1px solid transparent;
}

.nav a:hover {
  border-color: var(--amber);
}

.hero {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: center;
  padding: 138px clamp(22px, 6vw, 80px) 78px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(9, 17, 16, 0.82), rgba(9, 17, 16, 0.54) 42%, rgba(9, 17, 16, 0.18)),
    url("assets/hero-travel-tech.png") center / cover no-repeat;
}

.hero::after {
  content: "";
  position: absolute;
  left: clamp(22px, 6vw, 80px);
  bottom: 32px;
  width: 84px;
  height: 3px;
  background: var(--amber);
}

.hero-content {
  position: relative;
  width: min(760px, 100%);
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.08;
  font-weight: 850;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 3.6vw, 48px);
  line-height: 1.18;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.25;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(17px, 2vw, 21px);
}

.english {
  color: var(--muted);
}

.hero .english {
  color: rgba(255, 255, 255, 0.78);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 18px;
  border: 1px solid rgba(255, 255, 255, 0.44);
  font-weight: 750;
}

.button.primary {
  border-color: var(--amber);
  background: var(--amber);
  color: #111815;
}

.button.secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.section-band {
  background: var(--white);
}

.section-inner {
  width: min(1160px, calc(100% - 44px));
  margin: 0 auto;
  padding: 82px 0;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(280px, 1.2fr);
  gap: clamp(30px, 6vw, 76px);
  align-items: start;
}

.text-stack p {
  margin-bottom: 16px;
  font-size: 18px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}

.section-heading.compact {
  display: block;
  max-width: 780px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 352px;
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.service-number {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
}

.service-card p {
  color: var(--muted);
}

.service-card .english {
  margin-bottom: 0;
  font-size: 14px;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 34px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.model-item {
  display: grid;
  gap: 10px;
  min-height: 224px;
  padding: 28px;
  background: #fbfcfb;
}

.model-item strong {
  color: var(--teal-deep);
  font-size: 20px;
}

.model-item span,
.model-item em {
  color: var(--muted);
}

.model-item em {
  font-style: normal;
  font-size: 14px;
}

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

.pill-list span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--charcoal);
  font-weight: 700;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(280px, 420px);
  gap: clamp(30px, 6vw, 80px);
  align-items: center;
}

.contact-panel p {
  max-width: 640px;
  font-size: 18px;
}

address {
  display: grid;
  gap: 10px;
  padding: 28px;
  border-left: 4px solid var(--teal);
  background: var(--paper);
  font-style: normal;
}

address strong {
  font-size: 19px;
}

address span {
  color: var(--muted);
}

address a {
  color: var(--teal-deep);
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(22px, 5vw, 60px);
  color: rgba(255, 255, 255, 0.78);
  background: var(--charcoal);
  font-size: 14px;
}

@media (max-width: 960px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .hero {
    min-height: 82vh;
    padding-top: 190px;
  }

  .two-column,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .model-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 16px 18px;
  }

  .brand {
    align-items: flex-start;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand strong {
    font-size: 13px;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
    font-size: 12px;
  }

  .hero {
    min-height: 86vh;
    padding: 188px 20px 72px;
    background-position: 59% center;
  }

  h1 {
    font-size: 39px;
  }

  .hero-copy,
  .text-stack p,
  .contact-panel p {
    font-size: 16px;
  }

  .section-inner {
    width: min(100% - 32px, 1160px);
    padding: 58px 0;
  }

  .section-heading {
    display: block;
  }

  .service-grid,
  .model-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: auto;
  }

  .service-number {
    margin-bottom: 22px;
  }

  .site-footer {
    flex-direction: column;
  }
}