:root {
  color-scheme: light;
  --ink: #17211f;
  --muted: #5f6d68;
  --line: #d8e2dc;
  --paper: #fbfaf6;
  --panel: #ffffff;
  --teal: #0c756d;
  --gold: #c5973a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: var(--teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 250, 246, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

nav {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: block;
  flex-shrink: 0;
  object-fit: contain;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

main,
footer {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 72px 0 36px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 19px;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 32px;
}

.meta-grid div,
.content-grid article,
.policy {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 22px;
}

.meta-grid span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.meta-grid strong {
  font-size: 18px;
}

.section {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 36px;
  padding: 44px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  position: sticky;
  top: 84px;
  align-self: start;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.policy h3 {
  margin-top: 28px;
}

.policy h3:first-child {
  margin-top: 0;
}

ul {
  margin: 0;
  padding-left: 1.2rem;
}

li + li {
  margin-top: 8px;
}

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

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 36px 0 56px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  nav,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding-top: 48px;
  }

  .meta-grid,
  .section,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    position: static;
  }
}