:root {
    --ground: #F7F6F3;
    --ground-2: #FFFFFF;
    --rail: #EEEDE8;
    --ink: #14171F;
    --ink-2: #454B5A;
    --ink-3: #767D8E;
    --line: #DEDCD5;
    --line-2: #C9C6BC;
    --accent: #1F4FD8;
    --accent-soft: #E4EAFB;
    --bull: #2E8B4F;
    --bear: #D0246A;
    --cont: #E05E00;
    --pending: #0E9BC7;
    --psp: #C77800;
    --code-bg: #EDEBE4;
    --shadow: 0 1px 0 rgba(20,23,31,.05);
    --maxw: 68ch;
  }
  @media (prefers-color-scheme: dark) {
    :root {
      --ground: #0C0F16;
      --ground-2: #131722;
      --rail: #0A0D13;
      --ink: #E8EAF0;
      --ink-2: #A9B0C0;
      --ink-3: #6E7686;
      --line: #232936;
      --line-2: #333B4B;
      --accent: #6E9BFF;
      --accent-soft: #16203A;
      --bull: #4CAF50;
      --bear: #F0508F;
      --cont: #FF8A3D;
      --pending: #40C4FF;
      --psp: #FFB020;
      --code-bg: #1A1F2C;
      --shadow: none;
    }
  }
  :root[data-theme="dark"] {
    --ground: #0C0F16;
    --ground-2: #131722;
    --rail: #0A0D13;
    --ink: #E8EAF0;
    --ink-2: #A9B0C0;
    --ink-3: #6E7686;
    --line: #232936;
    --line-2: #333B4B;
    --accent: #6E9BFF;
    --accent-soft: #16203A;
    --bull: #4CAF50;
    --bear: #F0508F;
    --cont: #FF8A3D;
    --pending: #40C4FF;
    --psp: #FFB020;
    --code-bg: #1A1F2C;
    --shadow: none;
  }
  :root[data-theme="light"] {
    --ground: #F7F6F3;
    --ground-2: #FFFFFF;
    --rail: #EEEDE8;
    --ink: #14171F;
    --ink-2: #454B5A;
    --ink-3: #767D8E;
    --line: #DEDCD5;
    --line-2: #C9C6BC;
    --accent: #1F4FD8;
    --accent-soft: #E4EAFB;
    --bull: #2E8B4F;
    --bear: #D0246A;
    --cont: #E05E00;
    --pending: #0E9BC7;
    --psp: #C77800;
    --code-bg: #EDEBE4;
    --shadow: 0 1px 0 rgba(20,23,31,.05);
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--ground);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.62;
    -webkit-font-smoothing: antialiased;
  }

  .mono, code, kbd, .field, .val, .tocnum, .eyebrow, th, .badge, .num {
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  }

  /* ---------- shell ---------- */
  .shell {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    align-items: start;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 28px;
    gap: 56px;
  }

  /* ---------- rail ---------- */
  .rail {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 40px 0 48px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    border-right: 1px solid var(--line);
    margin-right: -28px;
    padding-right: 28px;
  }
  .mark {
    display: flex;
    align-items: baseline;
    gap: 9px;
    text-decoration: none;
    color: var(--ink);
  }
  .mark strong { font-size: 17px; letter-spacing: -.02em; }
  .mark span {
    font-size: 10px;
    letter-spacing: .13em;
    text-transform: uppercase;
    color: var(--ink-3);
  }
  .search {
    position: relative;
  }
  .search input {
    width: 100%;
    background: var(--ground-2);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 8px 10px 8px 30px;
    color: var(--ink);
    font: inherit;
    font-size: 13.5px;
  }
  .search input::placeholder { color: var(--ink-3); }
  .search input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
    border-color: transparent;
  }
  .search svg {
    position: absolute;
    left: 9px; top: 50%;
    transform: translateY(-50%);
    width: 14px; height: 14px;
    stroke: var(--ink-3);
    fill: none;
    stroke-width: 1.8;
  }
  nav ol {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
  }
  nav a {
    display: grid;
    grid-template-columns: 26px 1fr;
    gap: 8px;
    align-items: baseline;
    padding: 6px 0 6px 10px;
    margin-left: -11px;
    border-left: 1px solid var(--line);
    color: var(--ink-2);
    text-decoration: none;
    font-size: 14px;
  }
  nav a:hover { color: var(--ink); }
  nav a .tocnum { font-size: 11px; color: var(--ink-3); }
  nav a.on {
    color: var(--ink);
    border-left-color: var(--accent);
    font-weight: 600;
  }
  nav a.on .tocnum { color: var(--accent); }
  .railfoot {
    margin-top: auto;
    font-size: 12.5px;
    color: var(--ink-3);
    line-height: 1.5;
  }
  .railfoot a { color: var(--accent); text-decoration: none; }
  .railfoot a:hover { text-decoration: underline; }

  /* ---------- main ---------- */
  main {
    padding: 40px 0 140px;
    min-width: 0;
  }
  .wrap { max-width: var(--maxw); }

  .hero { padding: 26px 0 8px; }
  .eyebrow {
    font-size: 10.5px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin: 0 0 18px;
  }
  h1 {
    font-size: clamp(38px, 6vw, 60px);
    line-height: 1.02;
    letter-spacing: -.035em;
    font-weight: 680;
    margin: 0 0 18px;
    text-wrap: balance;
  }
  h1 em {
    font-style: normal;
    color: var(--ink-3);
    font-weight: 400;
  }
  .lede {
    font-size: 19px;
    line-height: 1.55;
    color: var(--ink-2);
    margin: 0;
    max-width: 52ch;
    text-wrap: pretty;
  }

  .keyrow {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 18px;
    margin: 32px 0 0;
    padding: 14px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    font-size: 12.5px;
    color: var(--ink-2);
  }
  .key { display: flex; align-items: center; gap: 7px; }
  .chip {
    width: 11px; height: 11px;
    border-radius: 2px;
    flex-shrink: 0;
    border: 1px solid rgba(128,128,128,.35);
  }

  section { padding-top: 64px; scroll-margin-top: 24px; }
  .sechead {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 12px;
    align-items: baseline;
    border-top: 1px solid var(--line-2);
    padding-top: 16px;
    margin-bottom: 6px;
  }
  .num { font-size: 12px; color: var(--accent); letter-spacing: .04em; }
  h2 {
    font-size: 27px;
    letter-spacing: -.022em;
    font-weight: 640;
    margin: 0;
    text-wrap: balance;
  }
  .sechead p {
    grid-column: 2;
    margin: 6px 0 0;
    color: var(--ink-2);
    font-size: 15.5px;
    max-width: 56ch;
  }
  h3 {
    font-size: 16px;
    font-weight: 640;
    letter-spacing: -.01em;
    margin: 34px 0 10px;
  }
  p { margin: 0 0 14px; }
  main p { max-width: var(--maxw); }
  a { color: var(--accent); }

  /* ---------- settings list ---------- */
  .settings {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--line);
    margin: 20px 0 4px;
  }
  .set {
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 4px 22px;
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
    align-items: baseline;
  }
  .set > div:last-child { color: var(--ink-2); font-size: 15px; }
  .set > div:last-child > :last-child { margin-bottom: 0; }
  .field {
    font-size: 13.5px;
    color: var(--ink);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 7px;
    flex-wrap: wrap;
  }
  .badge {
    display: inline-block;
    font-size: 10.5px;
    letter-spacing: .02em;
    color: var(--ink-3);
    background: var(--code-bg);
    border-radius: 3px;
    padding: 1px 5px;
    font-weight: 500;
    white-space: nowrap;
  }
  .badge.on { color: var(--bull); }
  .badge.off { color: var(--ink-3); }
  code {
    background: var(--code-bg);
    border-radius: 3px;
    padding: .5px 4.5px;
    font-size: 13px;
    color: var(--ink);
  }
  .set.hide { display: none; }

  ul, ol.steps { padding-left: 18px; margin: 0 0 14px; max-width: var(--maxw); }
  li { margin-bottom: 6px; color: var(--ink-2); }
  li strong { color: var(--ink); }

  /* ---------- callout ---------- */
  .note {
    background: var(--ground-2);
    border: 1px solid var(--line);
    border-left: 2px solid var(--accent);
    border-radius: 0 7px 7px 0;
    padding: 15px 18px;
    margin: 22px 0;
    max-width: var(--maxw);
    box-shadow: var(--shadow);
  }
  .note p:last-child { margin-bottom: 0; }
  .note .lbl {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 10.5px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent);
    display: block;
    margin-bottom: 6px;
  }
  .note.warn { border-left-color: var(--cont); }
  .note.warn .lbl { color: var(--cont); }

  /* ---------- table ---------- */
  .tablewrap {
    overflow-x: auto;
    margin: 20px 0;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--ground-2);
  }
  table {
    border-collapse: collapse;
    width: 100%;
    font-size: 13.5px;
    font-variant-numeric: tabular-nums;
  }
  th, td {
    text-align: left;
    padding: 9px 14px;
    border-bottom: 1px solid var(--line);
    white-space: nowrap;
  }
  th {
    font-size: 10.5px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--ink-3);
    font-weight: 500;
    background: var(--rail);
  }
  tr:last-child td { border-bottom: 0; }
  td:first-child { color: var(--ink); font-weight: 600; }
  td { color: var(--ink-2); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

  /* ---------- steps ---------- */
  .quick {
    counter-reset: q;
    list-style: none;
    padding: 0;
    margin: 22px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: var(--maxw);
  }
  .quick li {
    counter-increment: q;
    position: relative;
    padding-left: 38px;
    margin: 0;
    color: var(--ink-2);
  }
  .quick li::before {
    content: counter(q, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 11.5px;
    line-height: 2.25;
    color: var(--accent);
  }

  footer {
    margin-top: 88px;
    padding-top: 22px;
    border-top: 1px solid var(--line-2);
    color: var(--ink-3);
    font-size: 14px;
    max-width: var(--maxw);
  }
  footer a { color: var(--accent); text-decoration: none; }
  footer a:hover { text-decoration: underline; }

  .toptoggle { display: none; }

  @media (max-width: 900px) {
    .shell { grid-template-columns: 1fr; gap: 0; padding: 0 20px; }
    .rail {
      position: static;
      height: auto;
      border-right: 0;
      border-bottom: 1px solid var(--line);
      margin-right: 0;
      padding: 24px 0;
    }
    nav ol { display: grid; grid-template-columns: 1fr 1fr; }
    .railfoot { display: none; }
    .set { grid-template-columns: 1fr; gap: 3px; }
    main { padding-top: 8px; }
  }
  @media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  }
  html { scroll-behavior: smooth; }

/* ---------- print ---------- */
@page { size: A4; margin: 16mm 14mm 18mm; }
@media print {
  :root {
    --ground:#FFFFFF; --ground-2:#FFFFFF; --rail:#F2F1EC;
    --ink:#14171F; --ink-2:#3C4250; --ink-3:#6B7280;
    --line:#DDDBD4; --line-2:#BFBCB2; --accent:#1F4FD8;
    --accent-soft:#EDF1FC; --code-bg:#F0EEE8; --shadow:none;
  }
  html, body { background:#fff !important; color:var(--ink) !important; font-size:10.2pt; }
  .rail, .search, .toptoggle, .pdfbtn { display:none !important; }
  .shell { display:block; max-width:none; padding:0; }
  main { padding:0; }
  .wrap, main p, .note, .quick, ul, ol.steps, footer { max-width:none; }
  .hero { padding-top:0; }
  h1 { font-size:30pt; } h2 { font-size:15pt; } h3 { font-size:11pt; }
  section { padding-top:20pt; }
  .sechead, h3 { break-after:avoid; break-inside:avoid; }
  .set, .note, .tablewrap, .quick li, tr { break-inside:avoid; }
  main > section + section { break-before: page; }
  a { color:var(--ink) !important; text-decoration:none; }
  .keyrow { gap:4px 14px; }
  footer { margin-top:24pt; }
}


/* ---------- hub ---------- */
.hub { max-width: 860px; margin: 0 auto; padding: 0 28px 120px; }
.hubtop {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 18px; padding: 28px 0; border-bottom: 1px solid var(--line);
}
.hubtop .mark strong { font-size: 16px; }
.hubhero { padding: 72px 0 8px; }
.hubhero h1 { font-size: clamp(40px, 7vw, 68px); }
.hubhero .lede { font-size: 20px; max-width: 46ch; }
.cards { display: flex; flex-direction: column; gap: 0; margin-top: 56px; }
.card {
  display: grid; grid-template-columns: 1fr auto; gap: 8px 24px;
  align-items: start; padding: 26px 0; border-top: 1px solid var(--line);
  text-decoration: none; color: inherit; position: relative;
}
.card:last-child { border-bottom: 1px solid var(--line); }
a.card:hover .cardtitle { color: var(--accent); }
a.card:hover .arrow { transform: translateX(3px); }
.cardtitle {
  font-size: 21px; font-weight: 640; letter-spacing: -.018em; margin: 0;
  transition: color .15s ease;
}
.card p { grid-column: 1; margin: 6px 0 0; color: var(--ink-2); font-size: 15.5px; max-width: 52ch; }
.meta {
  grid-column: 1; display: flex; flex-wrap: wrap; gap: 6px 14px;
  margin-top: 12px; font-size: 11.5px; color: var(--ink-3);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.status {
  grid-column: 2; grid-row: 1; align-self: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 999px; white-space: nowrap;
  border: 1px solid var(--line-2); color: var(--ink-3);
}
.status.live { color: var(--bull); border-color: currentColor; }
.status.soon { color: var(--ink-3); }
.arrow { grid-column: 2; grid-row: 2; align-self: start; color: var(--ink-3); transition: transform .15s ease; }
.card.disabled { opacity: .62; }
.hubfoot { margin-top: 72px; padding-top: 22px; border-top: 1px solid var(--line-2); color: var(--ink-3); font-size: 14px; }
.hubfoot a { color: var(--accent); text-decoration: none; }
.hubfoot a:hover { text-decoration: underline; }
.backlink {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; color: var(--ink-3); text-decoration: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.backlink:hover { color: var(--accent); }
.pdfbtn {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--line-2); border-radius: 6px;
  padding: 6px 11px; font-size: 12.5px; color: var(--ink-2);
  text-decoration: none; background: var(--ground-2);
}
.pdfbtn:hover { border-color: var(--accent); color: var(--accent); }
@media (max-width: 900px) {
  .hub { padding: 0 20px 80px; }
  .hubhero { padding-top: 44px; }
  .card { grid-template-columns: 1fr; }
  .status { grid-column: 1; grid-row: auto; justify-self: start; margin-bottom: 4px; }
  .arrow { display: none; }
}


/* ---------- hero pdf link ---------- */
.herolinks { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.herolinks .pdfbtn { padding: 8px 14px; font-size: 13.5px; }
.herolinks .pdfbtn svg { flex-shrink: 0; }