:root {
  color-scheme: light;
  --paper: #f7f4ec;
  --ink: #20231f;
  --muted: #63685f;
  --line: #d8d0bf;
  --panel: #fffdf7;
  --panel-2: #ece6d8;
  --accent: #177c72;
  --accent-2: #b9422f;
  --code-bg: #171917;
  --code-ink: #f4f1e8;
  --shadow: 0 18px 45px rgba(62, 56, 43, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(32, 35, 31, 0.045) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(0deg, rgba(32, 35, 31, 0.035) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

.shell {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  border-right: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.82);
  backdrop-filter: blur(18px);
  padding: 24px 20px;
  overflow-y: auto;
}

.brand {
  display: grid;
  gap: 8px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.mark {
  width: 42px;
  height: 42px;
  border: 2px solid var(--ink);
  display: grid;
  place-items: center;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-weight: 800;
  background: var(--accent);
  color: #fffdf7;
  box-shadow: 5px 5px 0 var(--ink);
}

.brand h1 {
  margin: 0;
  font-size: 21px;
  line-height: 1.2;
  letter-spacing: 0;
}

.brand p,
.meta p,
.note p,
.callout p {
  margin: 0;
  color: var(--muted);
}

.toc {
  display: grid;
  gap: 4px;
  margin: 22px 0;
}

.toc a {
  border-left: 3px solid transparent;
  color: var(--muted);
  padding: 7px 10px;
  text-decoration: none;
  font-size: 14px;
}

.toc a:hover,
.toc a[aria-current] {
  border-color: var(--accent);
  background: rgba(23, 124, 114, 0.08);
  color: var(--ink);
}

.meta {
  display: grid;
  gap: 8px;
  margin-top: 24px;
  font-size: 13px;
}

.content {
  min-width: 0;
  padding: 34px clamp(18px, 4vw, 56px) 80px;
}

.doc-header {
  max-width: 1120px;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin: 0 0 12px;
  color: var(--accent-2);
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.doc-header h2 {
  margin: 0;
  max-width: 850px;
  font-family: "Space Grotesk", "IBM Plex Sans", "Noto Sans SC", sans-serif;
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.04;
  letter-spacing: 0;
}

.doc-header .lead {
  max-width: 860px;
  margin: 18px 0 0;
  color: #40443e;
  font-size: 18px;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  max-width: 1120px;
  margin: 24px 0 34px;
  border: 1px solid var(--line);
  background: var(--line);
}

.quick-grid div {
  background: var(--panel);
  padding: 16px;
  min-height: 104px;
}

.quick-grid span,
.field-table th,
.status-table th {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.quick-grid strong {
  display: block;
  margin-top: 8px;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: 16px;
  overflow-wrap: anywhere;
}

section {
  max-width: 1120px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

section h3 {
  margin: 0 0 14px;
  font-family: "Space Grotesk", "IBM Plex Sans", "Noto Sans SC", sans-serif;
  font-size: 28px;
  line-height: 1.18;
  letter-spacing: 0;
}

section h4 {
  margin: 22px 0 10px;
  font-size: 18px;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 22px;
}

.callout,
.note {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 16px;
}

.callout strong {
  display: block;
  margin-bottom: 5px;
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  counter-reset: step;
  margin-top: 18px;
}

.flow li {
  list-style: none;
  counter-increment: step;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 14px;
  min-height: 148px;
}

.flow li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  color: var(--accent);
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 8px;
}

.flow strong {
  display: block;
  margin-bottom: 6px;
}

.flow p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--panel);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--panel-2);
  color: #353832;
  font-size: 13px;
}

td code,
p code,
li code {
  background: rgba(23, 124, 114, 0.1);
  border: 1px solid rgba(23, 124, 114, 0.16);
  padding: 1px 5px;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.92em;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.model-card {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 16px;
}

.model-card h4 {
  margin-top: 0;
}

.model-card ul,
.faq,
.check-list {
  padding-left: 18px;
  margin: 10px 0 0;
}

.code-card {
  border: 1px solid #3b403a;
  background: var(--code-bg);
  box-shadow: var(--shadow);
  margin: 14px 0 22px;
}

.code-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #3b403a;
  color: var(--code-ink);
  padding: 10px 12px;
  font-size: 13px;
}

.copy-btn {
  border: 1px solid #6a7068;
  background: #242824;
  color: var(--code-ink);
  cursor: pointer;
  font: inherit;
  padding: 5px 9px;
}

.copy-btn:hover,
.copy-btn[data-state="done"] {
  border-color: var(--accent);
  color: #9ee2d9;
}

.copy-btn[data-state="error"] {
  border-color: var(--accent-2);
  color: #ffb8aa;
}

pre {
  margin: 0;
  overflow-x: auto;
  padding: 16px;
}

pre code {
  color: var(--code-ink);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  line-height: 1.62;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.pill {
  border: 1px solid var(--line);
  background: var(--panel);
  color: #343832;
  padding: 5px 9px;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
}

.faq li {
  margin: 0 0 12px;
}

.footer {
  max-width: 1120px;
  padding-top: 24px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 940px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .quick-grid,
  .flow,
  .two-col,
  .model-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .content {
    padding: 24px 16px 56px;
  }

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

  .doc-header h2 {
    font-size: 34px;
  }

  .quick-grid div,
  .flow li,
  .callout,
  .note {
    padding: 13px;
  }
}