:root {
  color-scheme: light;
  --ink: #173e2c;
  --muted: #66786d;
  --leaf: #2f7650;
  --leaf-dark: #21583c;
  --sun: #f6bd3d;
  --cream: #fffaf0;
  --meadow: #e9f2dd;
  --line: rgba(45, 89, 61, 0.14);
  --card: rgba(255, 255, 255, 0.76);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  line-height: 1.72;
  background:
    radial-gradient(circle at 12% 5%, rgba(246, 189, 61, 0.18), transparent 25rem),
    radial-gradient(circle at 92% 16%, rgba(83, 139, 82, 0.15), transparent 30rem),
    linear-gradient(180deg, var(--cream), #f8f8e9 48%, var(--meadow));
}

a { color: var(--leaf-dark); }
a:hover { color: var(--leaf); }

.page {
  width: min(940px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 760;
  letter-spacing: 0.01em;
}

.mark {
  position: relative;
  width: 34px;
  height: 34px;
  flex: none;
  border: 7px solid #f8c541;
  border-radius: 50%;
  background: #9f5b31;
  box-shadow: 0 4px 12px rgba(73, 79, 45, 0.16);
}

.mark::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 22px;
  width: 10px;
  height: 7px;
  border-radius: 70% 30% 70% 30%;
  background: #2f7650;
  transform: rotate(25deg);
}

.languages {
  display: flex;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
}

.languages a {
  padding: 6px 13px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.languages a[aria-current="page"] {
  color: #fff;
  background: var(--leaf-dark);
}

.hero {
  padding: clamp(30px, 6vw, 58px);
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.58);
  box-shadow: 0 22px 70px rgba(49, 86, 58, 0.1);
  backdrop-filter: blur(18px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--leaf);
  font-size: 14px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(36px, 6vw, 62px);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.intro {
  max-width: 720px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 2.2vw, 19px);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 14px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 22px 0 34px;
}

.summary-card {
  padding: 21px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
}

.summary-card strong {
  display: block;
  margin-bottom: 5px;
  font-size: 16px;
}

.summary-card span {
  color: var(--muted);
  font-size: 14px;
}

.content {
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.7);
}

.toc {
  margin: 0 0 38px;
  padding: 20px 24px;
  border-radius: 18px;
  background: rgba(233, 242, 221, 0.72);
}

.toc strong { display: block; margin-bottom: 7px; }
.toc ol { columns: 2; margin: 0; padding-left: 22px; }
.toc li { padding: 2px 12px 2px 0; }
.toc a { text-decoration: none; }

section { scroll-margin-top: 20px; }
section + section {
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.28;
  letter-spacing: -0.015em;
}

h3 { margin: 22px 0 8px; font-size: 17px; }
p { margin: 10px 0; }
ul { margin: 10px 0; padding-left: 22px; }
li + li { margin-top: 7px; }

.notice {
  margin: 18px 0;
  padding: 17px 19px;
  border-left: 4px solid var(--sun);
  border-radius: 10px 16px 16px 10px;
  background: rgba(255, 247, 214, 0.78);
}

.data-table {
  width: 100%;
  margin: 16px 0;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 14px;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 13px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th { background: rgba(233, 242, 221, 0.75); }

footer {
  padding: 28px 10px 0;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

@media (max-width: 700px) {
  .page { width: min(100% - 22px, 940px); padding-top: 14px; }
  .topbar { margin: 0 5px 18px; }
  .summary-grid { grid-template-columns: 1fr; }
  .toc ol { columns: 1; }
  .content { border-radius: 22px; }
  .data-table { display: block; overflow-x: auto; }
}

@media print {
  body { background: #fff; }
  .page { width: 100%; padding: 0; }
  .languages { display: none; }
  .hero, .content, .summary-card { box-shadow: none; background: #fff; }
}