/* Queue to Main: light, cool, signal-box. Design brief in ../PRODUCT.md. */
:root {
  --paper: #F3F5F2;
  --paper-2: #E8ECE7;
  --card: #FBFCFA;
  --ink: #13202B;
  --green: #1F7A4D;
  --amber: #E0A100;
  --red: #B42318;
  --steel: #5C6B77;
  --rule: #C9D1CC;
  --display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --text: "Source Sans 3", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --wrap: 1120px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 18px/1.55 var(--text);
}
a { color: var(--green); text-underline-offset: 2px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
code, kbd, .mono { font-family: var(--mono); font-size: .86em; }
code { background: var(--paper-2); border: 1px solid var(--rule); border-radius: 4px; padding: 0 .3em; }
pre { font-family: var(--mono); font-size: 14px; line-height: 1.5; background: var(--ink); color: #E6ECE8; padding: 16px 18px; border-radius: 6px; overflow-x: auto; }
pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.12; letter-spacing: -.01em; margin: 0 0 .5em; }
h1 { font-size: clamp(34px, 5.2vw, 58px); }
h2 { font-size: clamp(26px, 3.2vw, 36px); }
h3 { font-size: 20px; font-weight: 600; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

/* Header */
.top { border-bottom: 1px solid var(--rule); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; }
.brand svg { flex: none; }
.nav { display: flex; gap: 18px; font-size: 16px; flex-wrap: wrap; }
.nav a { color: var(--ink); text-decoration: none; }
.nav a:hover { text-decoration: underline; }

/* Banner for drafts / not open */
.banner { background: var(--ink); color: #F3F5F2; font-size: 15px; }
.banner .wrap { padding-top: 10px; padding-bottom: 10px; display: flex; gap: 10px; align-items: baseline; }
.banner .lamp { width: 10px; height: 10px; border-radius: 50%; background: var(--amber); flex: none; transform: translateY(1px); }

/* Hero */
.hero { padding: 56px 0 40px; }
.hero .wrap { display: grid; gap: 40px; }
@media (min-width: 960px) { .hero .wrap { grid-template-columns: 1fr 1.05fr; align-items: center; } }
.kicker { font-family: var(--mono); font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--steel); margin-bottom: 14px; }
.lede { font-size: 20px; color: var(--ink); max-width: 34em; }
.price-line { font-family: var(--mono); font-size: 15px; color: var(--steel); }
.price-line b { color: var(--ink); font-weight: 600; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 24px 0 10px; }
.btn { display: inline-flex; align-items: center; gap: 8px; font: 600 17px/1 var(--display); padding: 14px 20px; border-radius: 6px; border: 2px solid var(--ink); text-decoration: none; cursor: pointer; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-secondary { background: transparent; color: var(--ink); }
.btn-secondary:hover { background: var(--ink); color: var(--paper); }
.btn[disabled], .btn[aria-disabled="true"] { background: var(--paper-2); color: var(--steel); border-color: var(--rule); cursor: not-allowed; }
.not-open { font-size: 15px; color: var(--steel); display: flex; gap: 8px; align-items: baseline; }
.not-open::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 2px var(--ink); flex: none; transform: translateY(-1px); }

/* Track diagram */
.track { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: 14px 14px 6px; }
.track svg { display: block; width: 100%; height: auto; }
.track-caption { font-family: var(--mono); font-size: 12px; color: var(--steel); padding: 6px 4px 8px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.rail { stroke: var(--steel); stroke-width: 3; fill: none; }
.sleeper { stroke: var(--rule); stroke-width: 2; }
.car rect.body { fill: var(--ink); }
.car text { font-family: var(--mono); font-size: 13px; fill: #F3F5F2; }
.lamp-q { fill: var(--amber); }
.lamp-g { fill: #3FBF7F; }
.lamp-r { fill: #E5484D; }
.platform rect { fill: var(--green); }
.platform text { font-family: var(--mono); font-size: 14px; font-weight: 600; fill: #fff; }
.svg-note { font-family: var(--text); font-size: 13px; fill: var(--steel); }
.svg-note-red { font-family: var(--text); font-size: 13px; fill: var(--red); }

/* Animation: head car runs into main, the rest move up. Static under reduced motion. */
@media (prefers-reduced-motion: no-preference) {
  .car-a { animation: carA 9s ease-in-out infinite; }
  .car-b, .car-c { animation: carB 9s ease-in-out infinite; }
  .car-a .lamp-anim { animation: lampA 9s steps(1, end) infinite; }
  @keyframes carA {
    0%, 25% { transform: translateX(0); opacity: 1; }
    50%, 80% { transform: translateX(150px); opacity: 1; }
    92%, 100% { transform: translateX(150px); opacity: 0; }
  }
  @keyframes carB {
    0%, 55% { transform: translateX(0); }
    78%, 100% { transform: translateX(130px); }
  }
  @keyframes lampA { 0% { fill: #3FBF7F; } }
}

/* Check run mockup (Primer-like structure, our colours) */
.checks { margin-top: 16px; background: #fff; border: 1px solid var(--rule); border-radius: 8px; font-family: var(--text); font-size: 15px; overflow: hidden; }
.checks-head { padding: 10px 14px; border-bottom: 1px solid var(--rule); display: flex; align-items: center; gap: 10px; background: var(--paper-2); }
.checks-head strong { font-weight: 600; }
.checks-head .sub { color: var(--steel); font-size: 14px; }
.check-row { display: grid; grid-template-columns: 20px 1fr auto; gap: 10px; align-items: center; padding: 9px 14px; border-bottom: 1px solid var(--paper-2); }
.check-row:last-child { border-bottom: 0; }
.check-row .name { font-weight: 600; }
.check-row .desc { color: var(--steel); }
.check-row .det { font-size: 13px; color: var(--green); }
.ic { width: 16px; height: 16px; border-radius: 50%; display: inline-block; position: relative; }
.ic-pass { background: var(--green); }
.ic-pass::after { content: ""; position: absolute; left: 5px; top: 2.5px; width: 4px; height: 8px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.ic-wait { background: var(--amber); box-shadow: inset 0 0 0 4px var(--amber), inset 0 0 0 8px var(--ink); }
.check-row.ours { background: #FFF9E8; }
@media (max-width: 480px) { .check-row { grid-template-columns: 20px 1fr; } .check-row .det { grid-column: 2; } }

/* Sections */
section.band { padding: 56px 0; border-top: 1px solid var(--rule); }
section.band.alt { background: var(--paper-2); }
.cols { display: grid; gap: 32px; }
@media (min-width: 860px) { .cols { grid-template-columns: 1fr 1fr; } .cols-3 { grid-template-columns: repeat(3, 1fr); } }
.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; display: grid; gap: 18px; }
@media (min-width: 860px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.steps li { counter-increment: s; background: var(--card); border: 1px solid var(--rule); border-radius: 8px; padding: 18px; }
.steps li::before { content: counter(s, decimal-leading-zero); display: block; font-family: var(--mono); font-size: 13px; color: var(--steel); margin-bottom: 8px; }
.steps h3 { margin-bottom: 6px; }
.steps p { margin: 0; font-size: 16px; }

table { width: 100%; border-collapse: collapse; font-size: 16px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--rule); }
th { font-family: var(--display); font-weight: 600; font-size: 15px; background: var(--paper-2); }
td.mono, th.mono { font-family: var(--mono); font-size: 14px; white-space: nowrap; }
.table-scroll { overflow-x: auto; border: 1px solid var(--rule); border-radius: 8px; background: var(--card); }
.table-scroll table { min-width: 560px; }
.table-scroll tr:last-child td { border-bottom: 0; }
.small { font-size: 15px; color: var(--steel); }

.panel { background: var(--ink); color: #E6ECE8; border-radius: 10px; padding: 26px; }
.panel h2, .panel h3 { color: #fff; }
.panel a { color: #8FD9B0; }
.panel ul { padding-left: 1.1em; margin: 0; }
.panel li { margin-bottom: .5em; }
.panel code { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.18); color: #fff; }
.panel .sig { display: inline-flex; gap: 6px; margin-bottom: 12px; }
.panel .sig i { width: 12px; height: 12px; border-radius: 50%; display: block; background: #2a3a47; }
.panel .sig i.on-a { background: var(--amber); }

.price-card { background: var(--card); border: 2px solid var(--ink); border-radius: 10px; padding: 28px; }
.price-card .amount { font-family: var(--display); font-weight: 700; font-size: 56px; line-height: 1; }
.price-card .amount span { font-size: 20px; font-weight: 500; color: var(--steel); }
.price-card ul { padding-left: 1.1em; margin: 16px 0; }
.price-card li { margin-bottom: .4em; }
.ours-row td { background: #E3F1E8; font-weight: 600; }

.faq details { border-bottom: 1px solid var(--rule); padding: 14px 0; }
.faq summary { font-family: var(--display); font-weight: 600; font-size: 19px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--steel); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 10px 0 0; max-width: 46em; }

/* Docs and legal pages */
.doc { padding: 48px 0 64px; }
.doc .wrap { max-width: 800px; }
.doc h2 { margin-top: 1.6em; font-size: 26px; }
.doc h3 { margin-top: 1.4em; }
.doc li { margin-bottom: .4em; }
.doc .meta { font-family: var(--mono); font-size: 13px; color: var(--steel); }
.toc { background: var(--card); border: 1px solid var(--rule); border-radius: 8px; padding: 14px 18px; font-size: 16px; }
.toc ol { margin: 6px 0 0; padding-left: 1.2em; }
.callout { border-left: 4px solid var(--amber); background: var(--card); padding: 12px 16px; border-radius: 0 6px 6px 0; margin: 0 0 1em; }
.draft-banner { background: var(--amber); color: var(--ink); font-weight: 600; }
.draft-banner .wrap { padding-top: 10px; padding-bottom: 10px; }

/* Footer */
footer.site { border-top: 1px solid var(--rule); padding: 28px 0 40px; font-size: 15px; color: var(--steel); }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; }
footer.site nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer.site a { color: var(--ink); }
.cols > *, .hero .wrap > * { min-width: 0; }
@media (min-width: 860px) { .cols.pricing { grid-template-columns: 1fr 1.5fr; } }
.cmp table { min-width: 500px; }
.car text.svg-note { fill: var(--steel); font-family: var(--mono); font-size: 12px; }
.svg-note, .svg-note-red { font-size: 14px; }
.car text { font-size: 14px; }