:root {
  color-scheme: light;
  --bg: #f7f7f4;
  --surface: #ffffff;
  --surface-2: #efefe9;
  --text: #1c1c1a;
  --muted: #66665f;
  --line: #d9d8cf;
  --accent: #087f6d;
  --accent-2: #b15c12;
  --accent-soft: #dff2ed;
  --shadow: 0 18px 50px rgba(28, 28, 26, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  background: rgba(247, 247, 244, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  background: var(--text);
  color: #fff;
  font-weight: 800;
}

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

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  box-shadow: inset 0 0 0 1px var(--line);
}

main {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.6fr);
  gap: 24px;
  align-items: stretch;
  padding: clamp(46px, 8vw, 92px) 0 36px;
}

.hero-copy,
.status-panel,
.notice,
.policy-section,
.doc-header {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: clamp(28px, 5vw, 56px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 16px;
  font-size: clamp(34px, 6vw, 66px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.3;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 800;
}

.button:hover {
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: #fff;
}

.button.secondary {
  background: var(--accent-soft);
  color: #075a4d;
}

.status-panel {
  display: grid;
  align-content: center;
  gap: 14px;
  padding: 24px;
}

.status-panel div {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
}

.status-panel span,
.meta {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.status-panel strong {
  display: block;
  margin-top: 4px;
  font-size: 22px;
}

.section {
  padding: 34px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-card {
  min-height: 260px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.card-index {
  display: inline-flex;
  margin-bottom: 24px;
  color: var(--accent);
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 24px;
  align-items: start;
}

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

.compare-list > div,
.bilingual > div {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.notice {
  padding: clamp(22px, 4vw, 34px);
}

.document {
  max-width: 1040px;
}

.doc-header {
  margin-top: 34px;
  padding: clamp(24px, 5vw, 46px);
}

.doc-header h1 {
  font-size: clamp(34px, 5vw, 54px);
}

.policy-section {
  margin: 18px 0;
  padding: clamp(20px, 4vw, 32px);
}

.policy-section h2 {
  font-size: clamp(22px, 3vw, 30px);
}

ul {
  margin: 0;
  padding-left: 20px;
}

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

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  margin-top: 34px;
  padding: 24px clamp(18px, 4vw, 56px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .hero,
  .split,
  .bilingual,
  .compare-list {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    justify-content: flex-start;
    width: 100%;
  }

  .site-nav a {
    flex: 1 1 auto;
    justify-content: center;
  }

  main {
    width: min(100% - 24px, 1120px);
  }

  .hero {
    padding-top: 24px;
  }

  .hero-copy,
  .doc-header,
  .policy-section,
  .notice {
    padding: 20px;
  }

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

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

  h1 {
    font-size: 34px;
  }
}