:root {
  --ink: #172B4D;
  --ink-strong: #091E42;
  --muted: #5E6C84;
  --border: #DFE1E6;
  --border-strong: #C1C7D0;
  --bg: #F7F8FA;
  --surface: #FFFFFF;
  --panel: #FAFBFC;
  --blue: #0C66E4;
  --blue-dark: #0747A6;
  --blue-soft: #E9F2FF;
  --blue-border: #B3D4FF;
  --purple: #7719AA;
  --purple-soft: #F0E6FA;
  --purple-border: #C89DE8;
  --green-soft: #E3FCEF;
  --green-border: #ABF5D1;
  --green-ink: #006644;
  --amber-soft: #FFF8E1;
  --amber-border: #FFD54F;
  --amber-ink: #5D4037;
  --red-soft: #FFEBEE;
  --red-border: #EF9A9A;
  --red-ink: #B71C1C;
  --code: #F4F5F7;
  --shadow: 0 10px 30px rgba(9, 30, 66, .10);
  --mono: "Cascadia Code", Consolas, Monaco, "Courier New", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.64;
}

img {
  max-width: 100%;
}

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

a:hover {
  text-decoration: underline;
}

.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(9, 30, 66, .04);
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px 34px 34px;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 26px;
}

.logo-wrap {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  color: inherit;
}

.logo-wrap:hover {
  text-decoration: none;
}

.logo-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 128px;
  min-height: 54px;
}

.logo-card img {
  display: block;
  width: 118px;
  height: auto;
}

.brand-title {
  line-height: 1.25;
}

.brand-title strong {
  display: block;
  color: var(--ink);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.brand-title span {
  color: var(--muted);
  font-size: 13px;
}

.badge {
  display: inline-flex;
  align-items: center;
  color: var(--blue-dark);
  background: var(--blue-soft);
  border: 1px solid var(--blue-border);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.header h1 {
  margin: 0;
  max-width: 1050px;
  color: var(--ink);
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.08;
  letter-spacing: -.04em;
}

.subtitle {
  margin: 18px 0 0;
  max-width: 920px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  color: #42526E;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 11px;
  font-size: 13px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 290px) minmax(0, 1fr);
  gap: 28px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px 34px 64px;
}

.toc-panel {
  position: sticky;
  top: 18px;
  align-self: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 18px;
  max-height: calc(100vh - 36px);
  overflow: auto;
}

.toc-title {
  font-size: 12px;
  font-weight: 900;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: .09em;
  margin-bottom: 12px;
}

.toc-panel nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toc-panel a {
  color: var(--muted);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 13px;
  line-height: 1.25;
}

.toc-panel a:hover {
  color: var(--blue);
  background: var(--blue-soft);
  text-decoration: none;
}

.toc-panel .toc-h3 {
  padding-left: 20px;
  font-size: 12.5px;
}

.content-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: clamp(28px, 4vw, 54px);
  min-width: 0;
}

.content-card > section:first-child > h1,
.content-card > h1:first-child {
  display: none;
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
  line-height: 1.25;
}

h2 {
  margin: 2.2em 0 .65em;
  padding-top: .15em;
  font-size: 27px;
  letter-spacing: -.02em;
}

h2:first-child,
section:first-child h2:first-child {
  margin-top: 0;
}

h2::after {
  content: "";
  display: block;
  width: 54px;
  height: 3px;
  margin-top: 10px;
  border-radius: 99px;
  background: var(--blue);
}

h3 {
  margin: 1.75em 0 .55em;
  font-size: 20px;
  letter-spacing: -.01em;
}

h4 {
  margin: 1.35em 0 .45em;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

p {
  margin: .72em 0;
}

p,
li,
td {
  color: #253858;
}

strong {
  color: var(--ink-strong);
}

blockquote {
  margin: 0 0 22px;
  padding: 16px 18px;
  border-left: 5px solid var(--blue-border);
  background: var(--panel);
  border-radius: 10px;
  color: var(--muted);
}

ul,
ol {
  padding-left: 1.35rem;
}

li {
  margin: .28em 0;
}

code {
  font-family: var(--mono);
  font-size: .9em;
  background: var(--code);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--blue-dark);
  padding: 1px 5px;
}

pre {
  background: var(--code);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  overflow-x: auto;
  margin: 1.1em 0 1.45em;
}

pre code {
  display: block;
  background: transparent;
  border: 0;
  color: var(--ink);
  padding: 0;
  font-size: 13px;
  line-height: 1.58;
}

pre.text code {
  white-space: pre;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 1.2em 0 1.6em;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: white;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: 13.5px;
}

th {
  text-align: left;
  background: var(--panel);
  color: var(--ink);
  border-bottom: 1px solid var(--border-strong);
  padding: 10px 12px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

td {
  border-bottom: 1px solid #EBECF0;
  padding: 10px 12px;
  vertical-align: top;
}

tr:last-child td {
  border-bottom: 0;
}

tr:nth-child(even) td {
  background: var(--panel);
}

.doc-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 22px 0 10px;
}

.doc-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--panel) 100%);
  min-width: 0;
}

.doc-card h3 {
  margin-top: 6px;
}

.doc-card-blue {
  border-top: 4px solid var(--blue);
}

.doc-card-purple {
  border-top: 4px solid var(--purple);
}

.doc-card-kicker {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 9px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.doc-card-purple .doc-card-kicker {
  background: var(--purple-soft);
  color: var(--purple);
}

.doc-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 7px 12px;
  border-radius: 9px;
  border: 1px solid var(--blue);
  background: var(--blue);
  color: white;
  font-size: 13px;
  font-weight: 800;
}

.button:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  color: white;
  text-decoration: none;
}

.button.ghost {
  background: white;
  color: var(--blue-dark);
  border-color: var(--blue-border);
}

.button.ghost:hover {
  background: var(--blue-soft);
}

.button.purple {
  background: var(--purple);
  border-color: var(--purple);
}

.button.purple:hover {
  background: #5E1388;
  border-color: #5E1388;
}

.button.ghost.purple {
  background: white;
  color: var(--purple);
  border-color: var(--purple-border);
}

.button.ghost.purple:hover {
  background: var(--purple-soft);
}

.callout {
  border-radius: 10px;
  padding: 14px 18px;
  margin: 18px 0;
  font-size: 14px;
  line-height: 1.65;
}

.callout-head {
  font-weight: 800;
  font-size: 13px;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.callout.note {
  background: var(--blue-soft);
  border-left: 5px solid var(--blue-border);
  color: var(--blue-dark);
}

.callout.warn {
  background: var(--amber-soft);
  border-left: 5px solid var(--amber-border);
  color: var(--amber-ink);
}

.callout.cond {
  background: var(--purple-soft);
  border-left: 5px solid var(--purple);
  color: #3B1279;
}

.callout.danger {
  background: var(--red-soft);
  border-left: 5px solid var(--red-border);
  color: var(--red-ink);
}

.callout p,
.callout li {
  color: inherit;
}

.callout code {
  background: rgba(255,255,255,.62);
  border-color: rgba(0,0,0,.12);
  color: inherit;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.status-pill.required {
  background: var(--green-soft);
  border: 1px solid var(--green-border);
  color: var(--green-ink);
}

.status-pill.optional {
  background: var(--blue-soft);
  border: 1px solid var(--blue-border);
  color: var(--blue-dark);
}

.file-tree,
.schema-tree {
  background: var(--code);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 1.1em 0 1.45em;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
}

.file-tree .dir,
.file-tree .req-file,
.schema-tree .req-k {
  color: var(--blue-dark);
  font-weight: 800;
}

.file-tree .file,
.schema-tree .opt-k {
  color: #42526E;
  font-weight: 700;
}

.file-tree .comment,
.schema-tree .type {
  color: var(--muted);
}

.indent-1 {
  padding-left: 24px;
}

.indent-2 {
  padding-left: 48px;
}

.legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 8px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
}

.footer {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 34px 42px;
  color: var(--muted);
  font-size: 12px;
}

.footer-inner {
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

.footer-dot {
  padding: 0 7px;
  color: var(--border-strong);
}

.not-found {
  max-width: 960px;
  margin: 0 auto;
  padding: 64px 24px;
}

.not-found-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: clamp(28px, 4vw, 54px);
}

@media (max-width: 960px) {
  .layout {
    display: block;
    padding: 22px 18px 48px;
  }

  .toc-panel {
    position: relative;
    top: auto;
    max-height: none;
    margin-bottom: 18px;
  }

  .header-inner {
    padding: 24px 20px 30px;
  }

  .brand-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .content-card {
    padding: 26px 20px;
  }

  .doc-card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .header h1 {
    font-size: 34px;
  }

  .logo-wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .doc-card-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}