:root {
  --primary: #00B4D8;
  --primary-ink: #0083a0;
  --primary-tint: rgba(0, 180, 216, 0.09);
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --text: #1c1f24;
  --text-2: #4b5260;
  --muted: #8a909c;
  --line: #e7e9ee;
  --code-bg: #f5f6f8;
  --info: #3b82f6; --info-bg: rgba(59,130,246,.07); --info-line: rgba(59,130,246,.22);
  --warning: #d97706; --warning-bg: rgba(245,158,11,.08); --warning-line: rgba(245,158,11,.28);
  --danger: #dc2626; --danger-bg: rgba(239,68,68,.07); --danger-line: rgba(239,68,68,.24);
  --success: #16a34a; --success-bg: rgba(34,197,94,.07); --success-line: rgba(34,197,94,.24);
}
@media (prefers-color-scheme: dark) {
  :root {
    --primary-ink: #33c6e3;
    --primary-tint: rgba(0, 180, 216, 0.12);
    --bg: #0b0d12; --bg-soft: #12151c; --text: #eceef2; --text-2: #b4bccb; --muted: #7c8494;
    --line: #22262f; --code-bg: #12151c;
    --info-bg: rgba(59,130,246,.1); --warning-bg: rgba(245,158,11,.1); --danger-bg: rgba(239,68,68,.1); --success-bg: rgba(34,197,94,.1);
  }
  .logo-light { display: none; }
}
@media (prefers-color-scheme: light) { .logo-dark { display: none; } }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 Inter, system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--primary-ink); text-decoration: none; }

.top { position: sticky; top: 0; z-index: 10; height: 64px; display: flex; align-items: center; gap: 24px; padding: 0 24px; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; }
.logo { height: 22px; }
.brand-docs { color: var(--muted); font-weight: 500; font-size: 15px; padding-left: 10px; border-left: 1px solid var(--line); }
.search { margin-left: auto; display: flex; align-items: center; gap: 8px; width: 260px; height: 36px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); font-size: 14px; background: var(--bg-soft); }
.search span { flex: 1; }
kbd { font: 12px Inter, sans-serif; border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; }
.menu { display: none; background: none; border: 0; color: var(--text); font-size: 20px; }

.layout { display: grid; grid-template-columns: 280px minmax(0, 1fr) 240px; max-width: 1440px; margin: 0 auto; }
.sidebar { position: sticky; top: 64px; height: calc(100vh - 64px); overflow: auto; padding: 24px 16px; display: flex; flex-direction: column; }
.nav-group { margin: 22px 12px 6px; font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
.nav-link { display: block; padding: 6px 12px; border-radius: 8px; color: var(--text-2); font-size: 14px; }
.nav-link:hover { background: var(--bg-soft); color: var(--text); }
.nav-link.active { background: var(--primary-tint); color: var(--primary-ink); font-weight: 500; }
.powered { margin-top: auto; padding: 12px; font-size: 12px; color: var(--muted); }

.main { padding: 32px 56px 64px; max-width: 864px; width: 100%; margin: 0 auto; }
.cover { width: 100%; height: auto; border-radius: 12px; margin-bottom: 28px; display: block; }
.page-title { font-size: 36px; line-height: 1.2; font-weight: 700; letter-spacing: -.02em; margin: 8px 0 8px; }
.page-desc { font-size: 18px; color: var(--text-2); margin: 0 0 28px; }

.content h2 { font-size: 24px; font-weight: 600; letter-spacing: -.01em; margin: 40px 0 12px; position: relative; }
.content h3 { font-size: 18px; font-weight: 600; margin: 0 0 6px; position: relative; }
.anchor { position: absolute; left: -22px; opacity: 0; color: var(--muted); font-weight: 400; }
h2:hover .anchor, h3:hover .anchor { opacity: 1; }
.content p, .content li { color: var(--text); }
.content ul, .content ol:not(.stepper) { padding-left: 22px; }
.content li { margin: 4px 0; }
.content li::marker { color: var(--muted); }
.ext { font-size: .8em; margin-left: 2px; }
.content p a, .content li a, td a { text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--primary) 40%, transparent); text-underline-offset: 3px; }

code { font: 0.875em "IBM Plex Mono", ui-monospace, monospace; background: var(--code-bg); border: 1px solid var(--line); border-radius: 5px; padding: 1px 5px; }
.code { margin: 20px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--code-bg); overflow: hidden; }
.code-lang { padding: 8px 16px; font-size: 12px; color: var(--muted); border-bottom: 1px solid var(--line); }
.code pre { margin: 0; padding: 16px; overflow-x: auto; }
.code pre code { background: none; border: 0; padding: 0; font-size: 13.5px; line-height: 1.6; }

.hint { display: flex; gap: 12px; margin: 20px 0; padding: 14px 16px; border-radius: 10px; border: 1px solid; }
.hint-icon { flex: none; width: 20px; height: 20px; margin-top: 2px; border-radius: 50%; color: #fff; font: 700 12px/20px Inter, sans-serif; text-align: center; }
.hint-body > :first-child { margin-top: 0; } .hint-body > :last-child { margin-bottom: 0; }
.hint-info { background: var(--info-bg); border-color: var(--info-line); } .hint-info .hint-icon { background: var(--info); }
.hint-warning { background: var(--warning-bg); border-color: var(--warning-line); } .hint-warning .hint-icon { background: var(--warning); }
.hint-danger { background: var(--danger-bg); border-color: var(--danger-line); } .hint-danger .hint-icon { background: var(--danger); }
.hint-success { background: var(--success-bg); border-color: var(--success-line); } .hint-success .hint-icon { background: var(--success); }

.content-ref { display: flex; align-items: center; gap: 12px; margin: 10px 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); font-weight: 500; transition: border-color .15s; }
.content-ref:hover { border-color: var(--primary); }
.cr-icon { color: var(--muted); } .cr-arrow { margin-left: auto; color: var(--muted); }

.stepper { list-style: none; padding: 0; margin: 24px 0; }
.step { display: flex; gap: 16px; position: relative; padding-bottom: 20px; }
.step:not(:last-child)::before { content: ""; position: absolute; left: 13px; top: 32px; bottom: 4px; width: 2px; background: var(--line); }
.step-num { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--primary-tint); color: var(--primary-ink); font: 600 13px/28px Inter, sans-serif; text-align: center; }
.step-body { padding-top: 1px; min-width: 0; } .step-body p { margin: 4px 0 8px; }

.tabs { margin: 20px 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.tab-heads { display: flex; gap: 4px; padding: 0 8px; border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.tab-btn { background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px 10px; font: 500 14px Inter, sans-serif; color: var(--muted); cursor: pointer; }
.tab-btn.active { color: var(--text); border-bottom-color: var(--primary); }
.tab-pane { display: none; padding: 4px 16px; } .tab-pane.active { display: block; }

.table-wrap { margin: 20px 0; border: 1px solid var(--line); border-radius: 10px; overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th { text-align: left; font-weight: 600; background: var(--bg-soft); color: var(--text-2); }
th, td { padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:last-child td { border-bottom: 0; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 56px; }
.pg { display: flex; flex-direction: column; padding: 14px 18px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); font-weight: 500; }
.pg:hover { border-color: var(--primary); }
.pg small { color: var(--muted); font-weight: 400; font-size: 13px; }
.pg.next { text-align: right; grid-column: 2; }
.foot { margin-top: 32px; font-size: 13px; color: var(--muted); }

.toc { position: sticky; top: 64px; height: calc(100vh - 64px); padding: 40px 24px; overflow: auto; }
.toc-title { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin-bottom: 10px; }
.toc a { display: block; padding: 4px 0 4px 12px; font-size: 13.5px; color: var(--text-2); border-left: 1px solid var(--line); }
.toc a:hover { color: var(--primary-ink); border-left-color: var(--primary); }

@media (max-width: 1180px) { .layout { grid-template-columns: 260px minmax(0, 1fr); } .toc { display: none; } }
@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: none; position: fixed; inset: 64px 0 0; height: auto; background: var(--bg); z-index: 9; }
  .nav-open .sidebar { display: flex; }
  .menu { display: block; } .search { width: 36px; justify-content: center; padding: 0; } .search span, .search kbd { display: none; }
  .main { padding: 24px 16px 48px; }
}

.search { font: 14px Inter, sans-serif; cursor: pointer; text-align: left; transition: border-color .15s; }
.search:hover { border-color: var(--primary); }
.sx-open { overflow: hidden; }
.sx { position: fixed; inset: 0; z-index: 50; display: flex; justify-content: center; align-items: flex-start; padding: 12vh 16px 16px; background: rgba(5, 7, 13, .45); backdrop-filter: blur(3px); }
.sx[hidden] { display: none; }
.sx-box { width: 100%; max-width: 640px; max-height: 70vh; display: flex; flex-direction: column; background: var(--bg); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 24px 60px rgba(0,0,0,.25); overflow: hidden; }
.sx-head { display: flex; align-items: center; gap: 10px; padding: 0 16px; border-bottom: 1px solid var(--line); }
.sx-ico { color: var(--muted); font-size: 18px; }
.sx-input { flex: 1; height: 54px; border: 0; outline: 0; background: none; color: var(--text); font: 16px Inter, sans-serif; }
.sx-list { overflow-y: auto; padding: 8px; }
.sx-empty { padding: 28px 12px; text-align: center; color: var(--muted); font-size: 14px; }
.sx-item { display: block; padding: 10px 12px; border-radius: 8px; color: var(--text); }
.sx-item.on { background: var(--primary-tint); }
.sx-path { display: block; font-size: 14px; font-weight: 600; }
.sx-path span { color: var(--muted); font-weight: 400; }
.sx-text { display: block; margin-top: 2px; font-size: 13px; color: var(--text-2); line-height: 1.5; }
.sx mark { background: color-mix(in srgb, var(--primary) 25%, transparent); color: inherit; border-radius: 3px; padding: 0 1px; }
.sx-foot { display: flex; gap: 16px; padding: 8px 16px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.sx-foot kbd { margin-right: 3px; }