:root {
  --ink: #10151d;
  --ink-soft: #39424f;
  --muted: #6b7482;
  --ground: #f2f4f7;
  --paper: #ffffff;
  --rule: #dde2ea;
  --rule-strong: #c3cbd7;
  --slate: #0d1420;
  --slate-soft: #1b2534;
  --brand: #1f3fb8;
  --brand-deep: #16308f;
  --brand-wash: #e8ecfb;
  --ochre: #9a6206;
  --ochre-wash: #fdf3df;
  --green: #0f7a56;
  --green-wash: #e4f4ee;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --fast: 190ms;
  --sans: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  --max: 1080px;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 400 clamp(16px, 0.6vw + 14px, 17px) / 1.62 var(--sans);
  font-feature-settings: "kern" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.14; letter-spacing: -0.018em; margin: 0; font-weight: 640; }
h1 { font-size: clamp(2.05rem, 4.4vw, 3.15rem); }
h2 { font-size: clamp(1.4rem, 2.1vw, 1.82rem); }
h3 { font-size: 1.075rem; letter-spacing: -0.008em; }
p { margin: 0 0 1em; }
a { color: var(--brand-deep); text-underline-offset: 3px; }
ul, ol { padding-left: 1.15em; margin: 0 0 1em; }
li { margin-bottom: 0.45em; }
strong { font-weight: 640; }

.mono, .ticket, .mini-label, .note-tag, .watch-tag, .step-state, .eyebrow, .crumb-line { font-family: var(--mono); }

.skip {
  position: absolute; left: -9999px; top: 0; padding: 12px 18px; background: var(--brand);
  color: #fff; z-index: 20; text-decoration: none;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------------------------------------------------------------- masthead */
.top {
  position: sticky; top: 0; z-index: 10;
  background: var(--slate);
  border-bottom: 2px solid var(--brand);
}
.bar {
  max-width: var(--max); margin: 0 auto; padding: 12px 22px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: #fff; text-decoration: none; font-weight: 640; letter-spacing: -0.012em;
  margin-right: auto;
}
.brand .mark {
  display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 7px;
  background: var(--brand); color: #fff; font: 640 0.76rem/1 var(--mono); letter-spacing: 0.04em;
}
.menu { display: flex; gap: 4px; flex-wrap: wrap; }
.menu a {
  color: #cdd5e2; text-decoration: none; font-size: 0.84rem;
  padding: 6px 10px; border-radius: 7px; border: 1px solid transparent;
  transition: color var(--fast) var(--ease), background var(--fast) var(--ease), border-color var(--fast) var(--ease);
}
.menu a:hover { color: #fff; background: var(--slate-soft); border-color: #2c3a4e; }
.menu a[aria-current="page"] { color: #fff; background: var(--brand); border-color: var(--brand); }

/* ---------------------------------------------------------------- buttons */
.btn, .ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 9px; font-weight: 620; font-size: 0.9rem;
  text-decoration: none; border: 1px solid transparent;
  transition: transform var(--fast) var(--ease), background var(--fast) var(--ease), border-color var(--fast) var(--ease), color var(--fast) var(--ease);
}
.btn { background: var(--brand); color: #fff; }
.btn:hover { background: var(--brand-deep); transform: translateY(-1px); }
.ghost { background: transparent; color: var(--ink); border-color: var(--rule-strong); }
.ghost:hover { border-color: var(--ink); transform: translateY(-1px); }
.top .btn { padding: 8px 14px; font-size: 0.82rem; }

/* ---------------------------------------------------------------- shell */
.shell { max-width: var(--max); margin: 0 auto; padding: 0 22px 72px; }
main { display: block; }

.page-hero {
  padding: clamp(34px, 5vw, 58px) 0 26px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 34px;
}
.crumb-line { font-size: 0.74rem; letter-spacing: 0.09em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.eyebrow {
  display: inline-block; font-size: 0.72rem; letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--brand); border: 1px solid var(--brand); background: var(--brand-wash);
  padding: 4px 10px; border-radius: 6px; margin-bottom: 16px;
}
.page-hero h1 { max-width: 22ch; }
.lede { max-width: 62ch; margin-top: 16px; color: var(--ink-soft); font-size: 1.05rem; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }

/* ---------------------------------------------------------------- blocks */
.block { margin-bottom: 46px; scroll-margin-top: 96px; }
.block > h2 { padding-bottom: 12px; margin-bottom: 18px; border-bottom: 2px solid var(--rule-strong); }
.block h2 { max-width: 28ch; }

.mini-nav {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  padding: 12px 14px; background: var(--paper); border: 1px solid var(--rule);
  border-radius: 10px; margin-bottom: 30px;
}
.mini-label { font-size: 0.7rem; letter-spacing: 0.11em; text-transform: uppercase; color: var(--muted); margin-right: 4px; }
.mini-nav a {
  font-size: 0.8rem; text-decoration: none; color: var(--ink); padding: 4px 9px;
  border: 1px solid var(--rule); border-radius: 6px; background: var(--ground);
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.mini-nav a:hover { border-color: var(--brand); background: var(--brand-wash); transform: translateY(-1px); }

.note {
  background: var(--paper); border: 1px solid var(--rule); border-left: 4px solid var(--ink-soft);
  padding: 16px 18px; border-radius: 9px; margin: 0 0 30px;
}
.note p { margin: 6px 0 0; color: var(--ink-soft); font-size: 0.94rem; }
.note-tag { font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.note-warn { border-left-color: var(--ochre); background: var(--ochre-wash); }
.note-warn .note-tag { color: var(--ochre); }

/* ---------------------------------------------------------------- stepper */
.stepper {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 0;
  margin-bottom: 34px; background: var(--paper); border: 1px solid var(--rule); border-radius: 11px; overflow: hidden;
}
.step { display: flex; flex-direction: column; padding: 18px 16px 20px; position: relative; }
.step + .step { border-left: 1px solid var(--rule); }
.step-rail { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.step-dot {
  width: 13px; height: 13px; border-radius: 50%; border: 2px solid var(--rule-strong);
  background: var(--paper); flex: none;
  transition: background var(--fast) var(--ease), border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.step:hover .step-dot { transform: scale(1.18); }
.step-rail::after { content: ""; height: 2px; flex: 1; background: var(--rule); }
.step:last-child .step-rail::after { display: none; }
.step-cleared .step-dot { background: var(--brand); border-color: var(--brand); }
.step-cleared .step-rail::after { background: var(--brand); }
.step-current .step-dot { background: var(--ochre); border-color: var(--ochre); }
.step-current .step-rail::after { background: linear-gradient(90deg, var(--ochre), var(--rule)); }
.step-body h3 { margin-bottom: 4px; }
.step-note { font-size: 0.79rem; color: var(--muted); margin: 0 0 8px; font-family: var(--mono); }
.step-detail { font-size: 0.86rem; color: var(--ink-soft); margin: 0; }
.step-state {
  display: inline-block; font-size: 0.64rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 2px 7px; border-radius: 5px; margin-bottom: 8px;
}
.state-cleared { background: var(--brand-wash); color: var(--brand-deep); }
.state-current { background: var(--ochre-wash); color: var(--ochre); }
.state-pending { background: var(--ground); color: var(--muted); border: 1px solid var(--rule); }

/* ---------------------------------------------------------------- doc cards */
.doc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 22px 0 8px; }
.doc-card {
  background: var(--paper); border: 1px solid var(--rule); border-radius: 11px;
  padding: 20px 20px 18px; scroll-margin-top: 96px;
  transition: transform var(--fast) var(--ease), border-color var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}
.doc-card:hover { transform: translateY(-2px); border-color: var(--rule-strong); box-shadow: 0 8px 22px rgba(13, 20, 32, 0.07); }
.ticket {
  display: inline-block; font-size: 0.68rem; letter-spacing: 0.12em;
  background: var(--slate); color: #e7ecf4; padding: 3px 8px; border-radius: 5px; margin-bottom: 10px;
}
.doc-card h3 { margin-bottom: 12px; }
.spec { display: grid; grid-template-columns: minmax(88px, auto) 1fr; gap: 6px 14px; margin: 0; font-size: 0.87rem; }
.spec dt { color: var(--muted); font-family: var(--mono); font-size: 0.71rem; letter-spacing: 0.07em; text-transform: uppercase; padding-top: 3px; }
.spec dd { margin: 0; color: var(--ink-soft); }
.watch { margin: 14px 0 0; font-size: 0.87rem; color: var(--ink-soft); border-top: 1px dashed var(--rule-strong); padding-top: 12px; }
.watch-tag { display: block; font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ochre); margin-bottom: 3px; }

/* ---------------------------------------------------------------- numbers */
.numbers { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin: 22px 0 8px; }
.num { background: var(--paper); border: 1px solid var(--rule); border-radius: 11px; padding: 18px; }
.num strong { display: block; font-family: var(--mono); font-size: 1.85rem; letter-spacing: -0.02em; color: var(--brand-deep); }
.num span { display: block; font-size: 0.82rem; color: var(--ink-soft); margin-top: 6px; }

/* ---------------------------------------------------------------- tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: 11px; background: var(--paper); margin: 22px 0 8px; }
table.data { border-collapse: collapse; width: 100%; min-width: 640px; font-size: 0.88rem; }
table.data caption { text-align: left; padding: 14px 16px 0; font-size: 0.8rem; color: var(--muted); }
table.data th, table.data td { text-align: left; padding: 12px 16px; border-top: 1px solid var(--rule); vertical-align: top; }
table.data thead th {
  background: var(--slate); color: #fff; font-size: 0.72rem; letter-spacing: 0.09em;
  text-transform: uppercase; font-weight: 600; border-top: 0; white-space: nowrap;
}
table.data tbody tr { transition: background var(--fast) var(--ease); }
table.data tbody tr:hover { background: var(--brand-wash); }
table.data td:first-child { font-weight: 600; color: var(--ink); }

/* ---------------------------------------------------------------- faq */
.faq { display: grid; gap: 10px; margin: 22px 0 8px; }
.faq-item { background: var(--paper); border: 1px solid var(--rule); border-radius: 11px; overflow: hidden; }
.faq-item summary {
  cursor: pointer; padding: 16px 18px; font-weight: 620; font-size: 1rem;
  list-style: none; display: flex; gap: 12px; align-items: flex-start;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "+"; font-family: var(--mono); color: var(--brand); flex: none; font-size: 1.1rem; line-height: 1.3;
}
.faq-item[open] summary::before { content: "–"; }
.faq-body { padding: 0 18px 6px 46px; color: var(--ink-soft); font-size: 0.94rem; }
.faq-body p { margin: 0 0 14px; }

/* ---------------------------------------------------------------- lists */
ul.plain, ol.plain { list-style: none; padding-left: 0; margin: 18px 0 8px; }
ul.plain > li, ol.plain > li {
  background: var(--paper); border: 1px solid var(--rule); border-left: 3px solid var(--rule-strong);
  border-radius: 9px; padding: 13px 16px; margin-bottom: 10px;
  transition: border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}
ul.plain > li:hover, ol.plain > li:hover { border-left-color: var(--brand); transform: translateX(2px); }
ol.plain { counter-reset: step; }
ol.plain > li { counter-increment: step; padding-left: 52px; position: relative; }
ol.plain > li::before {
  content: counter(step, decimal-leading-zero); position: absolute; left: 16px; top: 13px;
  font-family: var(--mono); font-size: 0.78rem; color: var(--brand); letter-spacing: 0.06em;
}
ul.checklist > li { border-left-color: var(--green); }
ul.checklist > li::marker { content: ""; }

/* ---------------------------------------------------------------- cta + disclosure */
.next-step {
  display: flex; align-items: center; gap: 22px; justify-content: space-between; flex-wrap: wrap;
  background: var(--slate); color: #eef2f8; border-radius: 12px; padding: 24px 26px; margin: 40px 0 26px;
}
.next-step h2 { color: #fff; font-size: 1.22rem; margin: 4px 0 6px; }
.next-step p { margin: 0; color: #b9c4d4; font-size: 0.9rem; max-width: 52ch; }
.next-step .ticket { background: var(--brand); }
.next-step .btn { background: #fff; color: var(--slate); }
.next-step .btn:hover { background: #dfe5ee; }

.disclosure {
  background: var(--paper); border: 1px solid var(--rule); border-radius: 10px;
  padding: 16px 18px; font-size: 0.85rem; color: var(--ink-soft);
}
.disclosure strong { color: var(--ink); }
.link-out { color: var(--brand-deep); font-weight: 600; }

/* ---------------------------------------------------------------- footer */
.footer { background: var(--slate); color: #c3cdda; padding: 44px 22px 30px; margin-top: 24px; }
.foot-grid {
  max-width: var(--max); margin: 0 auto; display: grid;
  grid-template-columns: 1.6fr 1fr 1fr; gap: 30px;
}
.footer .brand { color: #fff; margin-bottom: 10px; }
.footer p { font-size: 0.86rem; color: #9fabbc; }
.footer strong { display: block; color: #fff; font-size: 0.75rem; letter-spacing: 0.11em; text-transform: uppercase; margin-bottom: 12px; font-family: var(--mono); }
.footer a { display: block; color: #c9d3e0; text-decoration: none; font-size: 0.88rem; padding: 4px 0; transition: color var(--fast) var(--ease), transform var(--fast) var(--ease); }
.footer a:hover { color: #fff; transform: translateX(2px); }
.fine { max-width: var(--max); margin: 30px auto 0; font-size: 0.78rem; color: #8e9aab; border-top: 1px solid #26313f; padding-top: 20px; }

/* ---------------------------------------------------------------- narrow */
@media (max-width: 900px) {
  .stepper { grid-template-columns: 1fr; }
  .step + .step { border-left: 0; border-top: 1px solid var(--rule); }
  .step-rail::after { display: none; }
  .doc-grid, .numbers { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 22px; }
}
@media (max-width: 620px) {
  .bar { padding: 10px 16px; gap: 10px; }
  .shell { padding: 0 16px 56px; }
  .menu a { padding: 5px 8px; font-size: 0.79rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .doc-card:hover, .btn:hover, .ghost:hover, .mini-nav a:hover, ul.plain > li:hover, ol.plain > li:hover, .footer a:hover {
    transform: none;
  }
}