:root {
  color-scheme: light;
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft JhengHei", "Microsoft YaHei", sans-serif;
  --ink: #17212b;
  --muted: #667085;
  --line: #dbe5e1;
  --brand: #087f5b;
  --brand-dark: #066b4d;
  --brand-soft: #eaf8f2;
  --surface: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: radial-gradient(circle at 90% 0, #e3f5ee 0, transparent 32%), #f7faf9;
  line-height: 1.7;
}

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

.site-header,
.site-main,
.site-footer {
  width: min(960px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-block: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

.brand img { width: 40px; height: 40px; }

.language-switcher {
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgb(255 255 255 / 82%);
}

.language-switcher button {
  padding: 6px 9px;
  color: var(--muted);
  border: 0;
  border-radius: 7px;
  background: transparent;
  cursor: pointer;
}

.language-switcher button[aria-pressed="true"] {
  color: #fff;
  background: var(--brand);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 260px;
  align-items: center;
  gap: 64px;
  min-height: 440px;
  padding-block: 42px 70px;
}

.hero h1,
.page-title {
  margin: 0 0 18px;
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero p { color: var(--muted); font-size: 19px; }
.hero img { width: 100%; filter: drop-shadow(0 24px 28px rgb(8 127 91 / 18%)); }

.notice,
.card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgb(255 255 255 / 90%);
}

.notice { padding: 15px 18px; color: var(--brand-dark); background: var(--brand-soft); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-block: 20px 70px;
}

.card { padding: 22px; }
.card h2 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }

.document {
  padding: 48px clamp(22px, 6vw, 70px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: 0 18px 50px rgb(16 24 40 / 6%);
}

.document h2 { margin-top: 36px; }
.document li + li { margin-top: 8px; }
.meta { color: var(--muted); }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-block: 34px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer nav { display: flex; gap: 16px; }

[data-lang][hidden] { display: none !important; }

@media (max-width: 720px) {
  .site-header, .site-footer { align-items: flex-start; flex-direction: column; }
  .hero { grid-template-columns: 1fr; gap: 28px; }
  .hero img { width: 180px; order: -1; }
  .card-grid { grid-template-columns: 1fr; }
}