/* Marine Deep Port — reference-reading design.
   Marine Deep's marine surface ramp for chrome (header/footer) and its orange
   as the single "do" colour, but a light paper surface for long reading and
   printing. System fonts only: no third-party requests. */
:root {
  --bg-deep: #04080c;
  --bg: #0a1017;
  --bg-raised: #1a242f;
  --paper: #f7f8f6;
  --paper-2: #eef1f3;
  --card: #ffffff;
  --ink: #16202a;
  --ink-muted: #45525f;
  --ink-inv: #e9eff6;
  --ink-inv-muted: #aab9c8;
  --line: #d5dce2;
  --line-strong: #9fb0bf;
  --accent: #f2762e;
  --accent-ink: #080e14;
  --accent-deep: #b24c0f;
  --brand-blue: #2a588b;
  --brand-blue-deep: #16304d;
  --law: #8f2a1f;       /* text on white 8.3:1 */
  --law-bg: #fbeae7;
  --code: #1f4f86;      /* 8.0:1 */
  --code-bg: #e6eef8;
  --guidance: #3e5261;  /* 8.1:1 */
  --guidance-bg: #eaeef1;
  --editorial: #5b4a12; /* 8.4:1 */
  --editorial-bg: #f7f0da;
  --focus: #1f6fd1;
  --radius: 4px;
  --maxw: 1180px;
  --measure: 72ch;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 17px/1.6 var(--font); color: var(--ink); background: var(--paper); }
a { color: var(--brand-blue); text-underline-offset: 2px; }
a:hover { color: var(--brand-blue-deep); }
a.ext::after { content: "↗"; font-size: 0.75em; margin-left: 0.15em; vertical-align: 0.15em; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 12px; z-index: 10; }
.preview-bar { background: #7a1b0c; color: #fff; text-align: center; padding: 6px; font-weight: 600; }

/* header */
.top { background: var(--bg); color: var(--ink-inv); border-bottom: 3px solid var(--accent); }
.top__inner { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: baseline; gap: 8px; text-decoration: none; color: var(--ink-inv); font-weight: 700; letter-spacing: 0.01em; }
.brand__md { font-size: 1.05rem; }
.brand__port { font-size: 1.05rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.12em; }
.top a { color: var(--ink-inv); }
.nav { display: flex; flex-wrap: wrap; gap: 4px 18px; list-style: none; margin: 0; padding: 0; }
.nav a { text-decoration: none; color: var(--ink-inv-muted); padding: 6px 0; display: inline-block; }
.nav a:hover, .nav a[aria-current="page"] { color: #fff; box-shadow: inset 0 -2px 0 var(--accent); }
.top__main { margin-left: auto; font-size: 0.9rem; color: var(--ink-inv-muted) !important; }

/* page head */
main { padding: 24px 20px 56px; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0 0 12px; font-size: 0.9rem; color: var(--ink-muted); }
.crumbs li + li::before { content: "›"; margin-right: 6px; }
h1 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); line-height: 1.2; margin: 0 0 12px; max-width: 30ch; }
h2 { font-size: 1.35rem; margin: 36px 0 12px; line-height: 1.3; }
h3 { font-size: 1.1rem; margin: 20px 0 8px; }
.lede { font-size: 1.15rem; color: var(--ink-muted); max-width: var(--measure); margin: 0 0 16px; }
.page-head { border-bottom: 1px solid var(--line); padding-bottom: 16px; margin-bottom: 8px; }
.prov { display: flex; flex-wrap: wrap; gap: 8px 28px; margin: 12px 0 0; font-size: 0.9rem; }
.prov div { display: flex; gap: 6px; align-items: baseline; }
.prov dt { color: var(--ink-muted); }
.prov dd { margin: 0; font-weight: 600; }
.stale { background: #fff4d6; border: 1px solid #d9a400; padding: 8px 12px; border-radius: var(--radius); font-size: 0.95rem; margin: 12px 0 0; }

/* layers */
.badge { display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; padding: 2px 7px; border-radius: 3px; border: 1px solid currentColor; white-space: nowrap; vertical-align: 0.1em; }
.badge--law { color: var(--law); background: var(--law-bg); }
.badge--code { color: var(--code); background: var(--code-bg); }
.badge--guidance { color: var(--guidance); background: var(--guidance-bg); }
.badge--editorial { color: var(--editorial); background: var(--editorial-bg); border-style: dashed; }
.legend { margin: 16px 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 14px; max-width: 900px; }
.legend summary { cursor: pointer; font-weight: 600; }
.legend dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 14px; margin: 12px 0 4px; }
.legend dt { font-weight: 600; }
.legend dd { margin: 0; color: var(--ink-muted); }
.legend p { font-size: 0.92rem; color: var(--ink-muted); margin: 8px 0 0; }

.facts { list-style: none; padding: 0; margin: 0; max-width: 900px; }
.fact { background: var(--card); border: 1px solid var(--line); border-left-width: 4px; border-radius: var(--radius); padding: 10px 14px; margin: 0 0 8px; }
.fact--law { border-left-color: var(--law); }
.fact--code { border-left-color: var(--code); }
.fact--guidance { border-left-color: var(--guidance); }
.fact .badge { margin-right: 8px; }
.fact cite { display: block; font-style: normal; font-size: 0.88rem; color: var(--ink-muted); margin-top: 4px; }
.held { max-width: 900px; background: var(--paper-2); border: 1px dashed var(--line-strong); padding: 10px 14px; border-radius: var(--radius); font-size: 0.95rem; }
.held cite { font-style: normal; }
mark.draft { background: #ffe08a; padding: 0 4px; font-size: 0.8rem; }

.editorial { max-width: var(--measure); background: var(--editorial-bg); border-left: 4px dashed var(--editorial); padding: 4px 18px 8px; border-radius: var(--radius); }
.layer-note { font-size: 0.85rem; color: var(--editorial); margin: 10px 0 0; display: flex; gap: 8px; align-items: center; }
.editorial h3 { margin-top: 18px; }
.note { border-left: 3px solid var(--line-strong); padding: 4px 12px; color: var(--ink-muted); background: rgba(255,255,255,0.6); margin: 12px 0; }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; background: var(--card); font-size: 0.93rem; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--paper-2); }
table.sources small { color: var(--ink-muted); }

.cards { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; }
.cards li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.cards li > a { font-weight: 700; font-size: 1.05rem; text-decoration: none; }
.cards li > a:hover { text-decoration: underline; }
.cards p { margin: 6px 0 0; color: var(--ink-muted); font-size: 0.93rem; }

.updates { list-style: none; padding: 0; margin: 0; max-width: 900px; }
.update { border-bottom: 1px solid var(--line); padding: 12px 0; }
.update time { font-weight: 700; margin-right: 6px; }
.update h3 { margin: 6px 0 4px; }
.update p { margin: 4px 0; }
.update__src { font-size: 0.9rem; color: var(--ink-muted); }
.tag { font-size: 0.8rem; color: var(--ink-muted); border: 1px solid var(--line); padding: 1px 6px; border-radius: 10px; margin-right: 6px; }
.muted { color: var(--ink-muted); }

/* D.O.P.A. */
.dopa { margin: 36px 0; background: var(--bg); color: var(--ink-inv); border-radius: var(--radius); padding: 20px 24px; max-width: 900px; border-top: 3px solid var(--accent); }
.dopa__eyebrow { text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.75rem; color: var(--ink-inv-muted); margin: 0 0 6px; }
.dopa__title { font-size: 1.25rem; font-weight: 700; margin: 0 0 8px; }
.dopa p { max-width: 70ch; }
.dopa__small { font-size: 0.85rem; color: var(--ink-inv-muted); }
.btn { display: inline-block; padding: 9px 16px; border-radius: var(--radius); border: 1px solid var(--line-strong); text-decoration: none; font-weight: 600; background: var(--card); color: var(--ink); cursor: pointer; font: inherit; font-weight: 600; margin: 0 8px 8px 0; }
.dopa .btn { background: transparent; color: var(--ink-inv); border-color: var(--ink-inv-muted); }
.btn--accent, .dopa .btn--accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn--accent:hover { background: #ff8f4d; color: var(--accent-ink); }

/* tools */
.tool { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; max-width: 900px; margin: 16px 0; }
.tool .row { display: flex; flex-wrap: wrap; gap: 14px; }
.tool label { display: flex; flex-direction: column; font-size: 0.9rem; font-weight: 600; gap: 4px; }
.tool input, .tool select { font: inherit; padding: 7px 9px; border: 1px solid var(--line-strong); border-radius: var(--radius); min-width: 180px; background: #fff; color: var(--ink); }
.tool output { display: block; margin-top: 14px; padding: 12px; background: var(--paper-2); border-radius: var(--radius); font-size: 1.05rem; min-height: 2.6em; }
.tool output.error { background: #fbeae7; color: var(--law); }
.tool output dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0; }
.tool output dt { color: var(--ink-muted); }
.tool output dd { margin: 0; font-weight: 700; font-variant-numeric: tabular-nums; }

/* templates */
.sheet { background: #fff; border: 1px solid var(--line); padding: 20px 24px; max-width: 900px; }
.sheet__brand { font-weight: 700; font-size: 1.1rem; margin: 0 0 12px; }
.sheet__brand span { font-weight: 400; color: var(--ink-muted); font-size: 0.85rem; }
.fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 8px 20px; margin-bottom: 12px; }
.field { display: flex; gap: 8px; align-items: flex-end; font-size: 0.9rem; }
.field .line { flex: 1; border-bottom: 1px solid var(--ink); height: 1.2em; }
.checklist { list-style: none; padding: 0; margin: 0 0 8px; }
.checklist li { display: flex; gap: 10px; padding: 5px 0; border-bottom: 1px dotted var(--line); }
.box { width: 16px; height: 16px; border: 1.5px solid var(--ink); flex: none; margin-top: 4px; }
table.log td { height: 2.1em; }
.sheet__foot { font-size: 0.78rem; color: var(--ink-muted); margin-top: 12px; }

/* footer */
.foot { background: var(--bg-deep); color: var(--ink-inv-muted); padding: 36px 0 20px; font-size: 0.93rem; }
.foot a { color: var(--ink-inv); }
.foot h2 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-inv); margin: 0 0 8px; }
.foot ul { list-style: none; padding: 0; margin: 0; }
.foot li { margin: 4px 0; }
.foot__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; }
.brand--foot { margin: 0 0 8px; }
.foot__legal { border-top: 1px solid var(--bg-raised); margin-top: 24px; padding-top: 14px; font-size: 0.82rem; }
@media (max-width: 800px) {
  .foot__grid { grid-template-columns: 1fr 1fr; }
  .top__inner { gap: 4px 16px; padding-top: 10px; }
  .top__main { display: none; }
  .top nav { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .nav { flex-wrap: nowrap; gap: 16px; white-space: nowrap; padding-bottom: 4px; }
  body { font-size: 16px; }
  .prov { gap: 2px 18px; }
}

@media print {
  .top, .foot, .crumbs, .legend, .dopa, .no-print, .prov, .stale, .block--links, .skip { display: none !important; }
  body { background: #fff; font-size: 11pt; }
  main { padding: 0; }
  .page-head { border: 0; }
  .lede { display: none; }
  h1 { font-size: 16pt; }
  .sheet { border: 0; padding: 0; max-width: none; }
  a.ext::after { content: ""; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }