:root {
  --bg: #f7f9fb;
  --surface: #ffffff;
  --text: #1d2935;
  --muted: #607080;
  --accent: #173b57;
  --line: #dce4ea;
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Noto Sans TC", "Noto Sans", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(247,249,251,.92);
  border-bottom: 1px solid rgba(220,228,234,.9);
}
.nav-inner {
  width: min(calc(100% - 40px), var(--max));
  margin: auto; min-height: 72px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { font-weight: 700; letter-spacing: .02em; color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-links { display: flex; gap: 24px; font-size: .95rem; color: var(--muted); }
.nav-links a:hover { color: var(--accent); }
.lang-switch {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: .88rem;
  background: var(--surface);
  color: var(--accent);
  font-weight: 700;
}
.hero {
  width: min(calc(100% - 40px), var(--max));
  margin: auto;
  min-height: 72vh;
  display: grid; align-items: center;
  padding: 96px 0 80px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 18px;
}
h1 {
  margin: 0; max-width: 900px;
  font-family: Georgia, "Times New Roman", "Noto Serif TC", serif;
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 1.02;
  letter-spacing: -.04em;
  font-weight: 500;
}
.role {
  margin: 24px 0 0;
  font-size: clamp(1.2rem, 2.2vw, 1.7rem);
  color: var(--muted);
}
.expertise-line {
  margin-top: 36px;
  max-width: 980px;
  font-size: clamp(1rem, 1.7vw, 1.18rem);
  color: var(--accent);
  font-weight: 600;
}
.intro {
  margin-top: 30px;
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
}
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  font-weight: 600;
  font-size: .95rem;
}
.btn.primary { background: var(--accent); color: white; }
.section {
  width: min(calc(100% - 40px), var(--max));
  margin: auto;
  padding: 92px 0;
  border-top: 1px solid var(--line);
}
.section-grid {
  display: grid;
  grid-template-columns: .8fr 1.7fr;
  gap: 64px;
  align-items: start;
}
.section h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", "Noto Serif TC", serif;
  font-size: clamp(2rem, 4vw, 3.3rem);
  font-weight: 500;
  letter-spacing: -.02em;
}
.section p { margin-top: 0; color: var(--muted); }
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 26px;
  min-height: 180px;
}
.card h3 { margin: 0 0 10px; font-size: 1.12rem; color: var(--accent); }
.card p { margin: 0; font-size: .96rem; }
.contact-box {
  background: var(--accent);
  color: white;
  border-radius: 28px;
  padding: 42px;
}
.contact-box p { color: rgba(255,255,255,.78); max-width: 720px; }
footer {
  width: min(calc(100% - 40px), var(--max));
  margin: auto;
  padding: 34px 0 48px;
  color: var(--muted);
  font-size: .9rem;
}
@media (max-width: 860px) {
  .nav-links { display: none; }
}
@media (max-width: 780px) {
  .hero { min-height: auto; padding: 76px 0 62px; }
  .section { padding: 66px 0; }
  .section-grid { grid-template-columns: 1fr; gap: 30px; }
  .cards { grid-template-columns: 1fr; }
  .contact-box { padding: 30px; }
  h1 { font-size: clamp(2.7rem, 13vw, 4.4rem); }
}