:root {
  color-scheme: light dark;
  --bg: #fafbfc;
  --surface: #fff;
  --text: #172b3a;
  --muted: #526774;
  --line: #dce4e8;
  --accent: #006a75;
  --soft: #edf6f6;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', sans-serif;
  font-size: 16px;
  line-height: 1.75;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}
a {
  color: var(--accent);
  text-underline-offset: 4px;
}
a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
  border-radius: 4px;
}
header {
  height: 76px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5vw;
  background: var(--surface);
  gap: 20px;
}
header a {
  text-decoration: none;
  font-size: 0.85rem;
}
.brand {
  font-weight: 800;
  font-size: 1.45rem;
  letter-spacing: 0.05em;
  color: var(--text);
}
.brand span {
  font-weight: 400;
  font-size: 0.8rem;
  letter-spacing: 0;
  color: var(--muted);
  margin-left: 12px;
}
.layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 800px);
  gap: 60px;
  max-width: 1200px;
  margin: auto;
  padding: 0 28px;
}
nav {
  position: sticky;
  top: 32px;
  align-self: start;
  padding-top: 34px;
  font-size: 0.9rem;
}
nav p {
  font-weight: 600;
  margin-bottom: 22px;
}
nav a {
  display: block;
  padding: 8px 0;
  text-decoration: none;
  color: var(--muted);
}
nav a:hover {
  color: var(--accent);
}
nav a:last-child {
  margin-top: 24px;
  font-size: 0.8rem;
}
.version {
  color: var(--accent);
  font-size: 0.75rem;
  margin-left: 8px;
}
main {
  min-width: 0;
  padding: 30px 0 60px;
}
section {
  padding: 32px 0 44px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 24px;
}
h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.35;
  letter-spacing: -0.04em;
  margin: 14px 0 24px;
}
h2 {
  font-size: 1.6rem;
  letter-spacing: -0.025em;
  line-height: 1.5;
  margin: 0 0 20px;
}
h3 {
  font-size: 1.05rem;
  margin: 30px 0 14px;
}
p {
  margin: 14px 0;
}
.eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent);
}
.lead {
  font-size: 1.08rem;
  max-width: 650px;
  color: var(--muted);
}
.muted {
  font-size: 0.8rem;
  color: var(--muted);
}
.base {
  margin-top: 28px;
  background: var(--soft);
  border-radius: 12px;
  padding: 18px 22px;
  overflow-wrap: anywhere;
}
.base span {
  display: block;
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 4px;
}
code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.87em;
}
pre {
  padding: 20px 22px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 12px;
  overflow-x: auto;
  line-height: 1.65;
  font-size: 0.9rem;
  tab-size: 2;
}
.endpoint {
  padding: 14px 18px;
  background: var(--soft);
  border-radius: 10px;
  overflow-wrap: anywhere;
}
.endpoint b {
  font-size: 0.75rem;
  color: var(--accent);
  margin-right: 12px;
}
.table-wrap {
  overflow-x: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
}
table {
  border-collapse: collapse;
  width: 100%;
  text-align: left;
  background: var(--surface);
  font-size: 0.85rem;
}
th,
td {
  padding: 13px 15px;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
tr:last-child td {
  border-bottom: 0;
}
th {
  font-weight: 600;
  color: var(--muted);
  background: var(--bg);
}
td:first-child {
  white-space: nowrap;
}
td:nth-child(2) {
  min-width: 92px;
}
td code {
  overflow-wrap: anywhere;
}
.required {
  display: block;
  font-size: 0.65rem;
  color: var(--accent);
}
details {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 16px;
  background: var(--surface);
}
summary {
  cursor: pointer;
  font-size: 0.9rem;
  min-height: 28px;
}
details p {
  font-size: 0.9rem;
}
td details {
  padding: 4px 8px;
}
li {
  padding: 5px 0;
}
footer {
  color: var(--muted);
  font-size: 0.8rem;
  padding-top: 32px;
}
.skip {
  position: absolute;
  top: -100px;
  left: 10px;
  background: var(--surface);
  padding: 10px;
  z-index: 10;
}
.skip:focus {
  top: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101a21;
    --surface: #17242d;
    --text: #e5edf2;
    --muted: #a4b7c2;
    --line: #30414e;
    --accent: #79d6d5;
    --soft: #193338;
  }
}
@media (max-width: 780px) {
  header {
    height: 68px;
    padding: 0 20px;
  }
  .brand span {
    display: none;
  }
  .layout {
    display: block;
    padding: 0 20px;
  }
  nav {
    position: static;
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 4px 20px;
  }
  nav p {
    width: 100%;
    margin: 0 0 5px;
  }
  nav a {
    padding: 6px 0;
    font-size: 0.8rem;
  }
  nav a:last-child {
    margin-top: 0;
  }
  main {
    padding-top: 0;
  }
  section {
    padding: 30px 0;
  }
  h1 {
    font-size: 2.2rem;
  }
  .base {
    padding: 16px;
  }
  pre {
    padding: 16px;
  }
  th,
  td {
    padding: 10px;
  }
  footer {
    padding-bottom: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  :root {
    scroll-behavior: auto;
  }
}