:root {
  --ground: #f3f1e6;
  --panel: #fffef9;
  --panel-2: #f8f6ec;
  --ink: #16232a;
  --ink-soft: #46565f;
  --sea: #173a4a;
  --sea-2: #0e2634;
  --line: #ddd7c4;
  --line-hard: #c6bfa8;
  --ochre: #b07d17;
  --green: #2e7d5b;
  --red: #a63a2e;
  --slate: #5c6b74;
  --grid: rgba(23, 58, 74, 0.07);
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --max: 1120px;
  --r: 3px;
}

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

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

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.62;
  background-color: var(--ground);
  background-image:
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(180deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
}

a { color: var(--sea); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--ochre); }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 40;
  background: var(--sea); color: #fff; padding: 10px 14px; border-radius: 0 0 var(--r) 0;
}
.skip:focus { left: 0; }

.top {
  position: sticky; top: 0; z-index: 30;
  background: var(--sea);
  color: #eef3f1;
  border-bottom: 3px solid var(--ochre);
}
.bar {
  max-width: var(--max); margin: 0 auto; padding: 10px 20px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: #fff; text-decoration: none; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; font-size: 13px;
}
.mark {
  display: inline-grid; place-items: center;
  width: 30px; height: 30px; border-radius: 2px;
  background: #0b1c26; border: 1px solid var(--ochre);
  font-family: var(--mono); font-size: 12px; letter-spacing: 0; color: #f0dfae;
}
.menu { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 13px; }
.menu a { color: #d7e3e0; text-decoration: none; letter-spacing: 0.04em; }
.menu a:hover { color: #fff; text-decoration: underline; }
.menu a[aria-current="page"] { color: #f6e4b0; border-bottom: 2px solid var(--ochre); }
.bar .btn { margin-left: auto; background: var(--ochre); color: #21180a; border-color: #8f6410; }
.bar .btn:hover { background: #c8911f; color: #1a1206; }

.btn {
  display: inline-block; text-decoration: none; font-weight: 700;
  font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 11px 16px; border: 1px solid var(--sea); border-radius: 2px;
  background: var(--sea); color: #fff;
  transition: transform 0.16s var(--ease), background 0.16s var(--ease);
}
.btn:hover { transform: translateY(-1px); background: var(--sea-2); color: #fff; }
.ghost {
  display: inline-block; text-decoration: none; font-size: 13px; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 11px 14px; border: 1px dashed var(--line-hard);
  border-radius: 2px; color: var(--sea);
}
.ghost:hover { border-color: var(--ochre); color: var(--ochre); }

.shell { max-width: var(--max); margin: 0 auto; padding: 0 20px 72px; }
main { display: block; }

.disc {
  margin: 18px 0 0; padding: 11px 14px; font-size: 13.5px; line-height: 1.6;
  color: var(--ink-soft); background: var(--panel-2);
  border: 1px dashed var(--line-hard); border-left: 3px solid var(--ochre); border-radius: 0 2px 2px 0;
}
.disc b { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--sea); }

.page-hero { padding: 44px 0 26px; border-bottom: 1px dashed var(--line-hard); }
.crumb-line {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--slate); margin-bottom: 18px;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; }
@media (min-width: 940px) { .hero-grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); } }
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ochre); margin-bottom: 12px;
}
h1 {
  font-size: clamp(30px, 4.4vw, 46px); line-height: 1.08; margin: 0 0 16px;
  letter-spacing: -0.01em; font-weight: 700;
}
.lede { font-size: 19px; line-height: 1.55; color: var(--ink-soft); margin: 0; max-width: 62ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; align-items: center; }

h2 {
  font-size: clamp(22px, 2.6vw, 30px); line-height: 1.16; margin: 40px 0 14px;
  letter-spacing: -0.005em;
  padding-top: 14px; border-top: 1px dashed var(--line-hard);
}
h3 { font-size: 18px; margin: 24px 0 8px; letter-spacing: 0.01em; }
h4 {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--sea); margin: 18px 0 6px;
}
p { margin: 0 0 14px; }
ul, ol { margin: 0 0 16px; padding-left: 22px; }
li { margin-bottom: 7px; }
strong { color: var(--ink); }
code {
  font-family: var(--mono); font-size: 0.92em; background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 2px; padding: 1px 5px;
}

.answer {
  background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--sea);
  border-radius: 0 var(--r) var(--r) 0; padding: 16px 18px; margin: 22px 0;
  font-size: 17px; line-height: 1.6;
}
.answer b {
  display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--slate); margin-bottom: 6px; font-weight: 600;
}

.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r);
  padding: 18px 20px; margin: 18px 0;
}
.grid { display: grid; gap: 16px; margin: 18px 0; }
@media (min-width: 720px) {
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.grid .card { margin: 0; }

.note {
  background: #fdf8e8; border: 1px solid #e6d8ab; border-left: 4px solid var(--ochre);
  border-radius: 0 var(--r) var(--r) 0; padding: 14px 18px; margin: 20px 0;
}
.note-tag {
  display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
  text-transform: uppercase; color: #7d5707; margin-bottom: 6px;
}
.note p:last-child { margin-bottom: 0; }

table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 15px; }
caption {
  caption-side: top; text-align: left; font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--slate); padding-bottom: 8px;
}
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th {
  background: var(--sea); color: #eef3f1; font-size: 12px; letter-spacing: 0.1em;
  text-transform: uppercase; border-bottom: 2px solid var(--ochre);
}
tbody tr:nth-child(even) { background: var(--panel-2); }

.chip {
  display: inline-block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; padding: 3px 8px; border-radius: 2px; border: 1px solid;
}
.chip-ok { color: #1d5942; background: #e6f2ec; border-color: #a9d0be; }
.chip-warn { color: #7d5707; background: #fbeecb; border-color: #dcc07a; }
.chip-stop { color: #7c2a21; background: #f6e3e0; border-color: #d9aba3; }
.chip-neutral { color: #3d4a52; background: #eceff0; border-color: #c5cdd0; }

.calc {
  background: var(--sea-2); color: #dfeaec; border-radius: var(--r);
  padding: 18px 20px; margin: 20px 0; font-family: var(--mono); font-size: 13.5px; line-height: 1.75;
}
.calc h4 { color: #f0ce7f; margin-top: 0; }
.calc .ln { display: block; }
.calc .ln b { color: #fff; font-weight: 600; }
.calc .sum { border-top: 1px dashed #4d7280; margin-top: 10px; padding-top: 10px; display: block; color: #f0ce7f; }
.calc p { font-family: var(--sans); font-size: 15px; color: #cfe0e3; margin: 10px 0 0; }

/* ---- Signature component 1: the border board -------------------------------------------
   The hero component. Three zones of access laid side by side and divided by dashed boundary
   lines: served under your own licence, served cross-border, and not served at all. The dashes
   ARE the boundary; nothing else on the page uses a heavy solid divider. */
.border-board {
  background: var(--panel); border: 1px solid var(--line-hard); border-radius: var(--r);
  overflow: hidden; margin: 20px 0;
}
.board-cap {
  background: var(--sea); color: #f0dfae; padding: 9px 16px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
}
.board-row { display: grid; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 780px) { .board-row { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.zone { padding: 16px 18px; border-top: 1px dashed var(--line-hard); }
@media (min-width: 780px) {
  .zone { border-top: 0; border-left: 1px dashed var(--line-hard); }
  .zone:first-child { border-left: 0; }
}
.zone-head {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  margin-bottom: 4px;
}
.zone h3 { margin: 0 0 8px; font-size: 16px; }
.zone ul { padding-left: 18px; margin-bottom: 0; font-size: 15px; }
.zone-ok .zone-head { color: var(--green); }
.zone-cross .zone-head { color: var(--ochre); }
.zone-stop .zone-head { color: var(--red); }
.zone-ok { border-top-color: #b6d6c7; }
.zone-cross { border-top-color: #ddc07a; }
.zone-stop { border-top-color: #dcb0a8; }

/* ---- Signature component 2: the check rail --------------------------------------------
   The five stops a location check passes through, drawn as a dashed rail with numbered
   stations. The dashed connector is the same boundary motif, used along the flow of a check. */
.check-rail { margin: 22px 0; }
.check-rail ol { list-style: none; padding: 0; display: grid; gap: 12px; }
@media (min-width: 860px) { .check-rail ol { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; } }
.chk { position: relative; background: var(--panel); border: 1px solid var(--line); padding: 14px 14px 14px 46px; }
@media (min-width: 860px) {
  .chk { border-left: 0; padding-left: 40px; }
  .chk:first-child { border-left: 1px solid var(--line); }
  .chk:not(:first-child)::before {
    content: ""; position: absolute; left: -10px; top: 26px; width: 20px;
    border-top: 2px dashed var(--ochre);
  }
}
.chk-n {
  position: absolute; left: 12px; top: 15px;
  font-family: var(--mono); font-size: 12px; color: var(--ochre);
}
.chk h3 { margin: 0 0 4px; font-size: 15px; }
.chk p { margin: 0; font-size: 14.5px; color: var(--ink-soft); }

/* ---- Plates: graticule map panel used for the licence/location figures and every diagram --- */
.plate {
  background: var(--panel); border: 1px solid var(--line-hard); border-radius: var(--r);
  padding: 18px; margin: 20px 0;
}
.plate-cap {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--slate); margin-bottom: 12px;
}
.graticule {
  position: relative; height: 210px; border: 1px solid var(--line); border-radius: 2px;
  background-color: var(--panel-2);
  background-image:
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(180deg, var(--grid) 1px, transparent 1px);
  background-size: 34px 34px;
  overflow: hidden;
}
.plot {
  position: absolute; transform: translate(-50%, -50%);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  white-space: nowrap; text-align: center;
}
.plot i { display: block; width: 12px; height: 12px; margin: 0 auto 4px; border-radius: 50%; }
.plot-a i { background: var(--green); box-shadow: 0 0 0 4px rgba(46, 125, 91, 0.16); }
.plot-b i { background: var(--ochre); box-shadow: 0 0 0 4px rgba(176, 125, 23, 0.16); }
.plot-c i { background: var(--red); box-shadow: 0 0 0 4px rgba(166, 58, 46, 0.16); }
.plot-a { color: #1d5942; }
.plot-b { color: #7d5707; }
.plot-c { color: #7c2a21; }
.borderline {
  position: absolute; inset: auto 0 auto 0; border-top: 2px dashed var(--ochre);
}
.plate-key { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 14px; font-size: 14px; }
.plate-key span { display: inline-flex; align-items: center; gap: 7px; }
.sw { width: 22px; height: 3px; border-radius: 2px; display: inline-block; }
.sw-ok { background: var(--green); }
.sw-cross { background: var(--ochre); }
.sw-stop { background: var(--red); }
.sw-dash { background: repeating-linear-gradient(90deg, var(--ochre) 0 5px, transparent 5px 10px); }

/* ---- Steps, checklists and myths ------------------------------------------------------- */
.steps { list-style: none; padding: 0; display: grid; gap: 14px; }
@media (min-width: 760px) { .steps-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.step {
  background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--sea);
  padding: 14px 16px;
}
.step-n {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; color: var(--ochre);
  display: block; margin-bottom: 4px;
}
.step h3 { margin: 0 0 5px; font-size: 16px; }
.step p:last-child { margin-bottom: 0; }

.checklist { list-style: none; padding: 0; }
.checklist li { position: relative; padding-left: 30px; margin-bottom: 10px; }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: 6px; width: 14px; height: 14px;
  border: 1px solid var(--line-hard); background: var(--panel);
}
.checklist li.done::before {
  background: var(--green); border-color: #276a4c;
  box-shadow: inset 0 0 0 3px var(--panel);
}

.myth {
  background: var(--panel); border: 1px solid var(--line); border-top: 3px solid var(--red);
  padding: 16px 18px; margin: 16px 0;
}
.myth-claim {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--red); display: block; margin-bottom: 5px;
}
.myth h3 { margin: 0 0 8px; font-size: 17px; }
.myth p:last-child { margin-bottom: 0; }

/* ---- FAQ, figures and the closing band ------------------------------------------------- */
.faq { margin: 20px 0; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 12px 2px; }
.faq summary {
  cursor: pointer; font-weight: 600; font-size: 16.5px; list-style: none;
  display: flex; gap: 10px; align-items: baseline;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+"; font-family: var(--mono); color: var(--ochre); }
.faq details[open] summary::before { content: "−"; }
.faq details p { margin: 10px 0 2px; color: var(--ink-soft); }

.figure { margin: 22px 0; }
.figure svg { width: 100%; height: auto; display: block; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); }
.figure figcaption {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--slate); margin-top: 8px;
}

.ctaband {
  background: var(--sea); color: #e7efee; border-radius: var(--r); padding: 20px;
  margin: 28px 0; display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
  border-left: 4px solid var(--ochre);
}
.ctaband p { margin: 0; flex: 1 1 260px; font-size: 15.5px; }
.ctaband .btn { background: var(--ochre); border-color: #8f6410; color: #21180a; }
.ctaband .btn:hover { background: #c8911f; }

.kv { margin: 18px 0; }
.kv div { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2px; padding: 11px 0; border-bottom: 1px dashed var(--line-hard); }
@media (min-width: 700px) { .kv div { grid-template-columns: 220px minmax(0, 1fr); gap: 16px; } }
.kv dt { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sea); }
.kv dd { margin: 0; }

.footer { background: var(--sea-2); color: #cfdcde; margin-top: 40px; border-top: 3px solid var(--ochre); }
.foot-grid {
  max-width: var(--max); margin: 0 auto; padding: 32px 20px 8px;
  display: grid; gap: 24px; grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 860px) { .foot-grid { grid-template-columns: 1.5fr 1fr 1fr; } }
.foot-grid strong {
  display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: #f0dfae; margin-bottom: 8px;
}
.foot-grid a { display: block; color: #cfdcde; font-size: 14.5px; text-decoration: none; padding: 2px 0; }
.foot-grid a:hover { color: #fff; text-decoration: underline; }
.foot-grid p { font-size: 14.5px; color: #b6c6c9; max-width: 46ch; }
.footer .brand { letter-spacing: 0.14em; }
.fine {
  max-width: var(--max); margin: 0 auto; padding: 12px 20px 34px;
  font-size: 12.5px; line-height: 1.7; color: #9fb2b6;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}