/* Layout: concrete-grey page, one dark "asphalt" board as the bold element; marking-yellow is the only accent.
   Overpass (a Highway Gothic descendant) for display, Atkinson Hyperlegible for body, Overpass Mono for data. */
:root {
  --bg: #eceef1;
  --surface: #ffffff;
  --band: #e1e5ea;
  --ink: #15191e;
  --muted: #59626d;
  --line: #cfd5dc;
  --accent: #f2b705;
  --accent-ink: #7d5b00;
  --on-accent: #1a1600;
  --asphalt: #252a31;
  --asphalt-2: #1d2127;
  --map-street: #3c434c;
  --map-ink: #e6e9ed;
  --map-muted: #9aa3ad;
  --ok: #2f9d5c;
  --warn: #e39b12;
  --bad: #d8452f;
  --none: #7c8590;
  --marking: #f4f5f6;

  --f-display: "Overpass", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --f-mono: "Overpass Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.3rem;
  --step-2: 1.75rem;
  --step-3: clamp(1.9rem, 1.3rem + 2.2vw, 2.6rem);
  --step-4: clamp(2.4rem, 1.5rem + 3.8vw, 4rem);
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121519; --surface: #1a1e23; --band: #171a1f; --ink: #e8ebee; --muted: #9ba3ad; --line: #2b3138;
    --accent: #f5c02e; --accent-ink: #f5c02e; --on-accent: #1a1600;
    --asphalt: #0d0f12; --asphalt-2: #090b0d; --map-street: #343a42; --map-ink: #e6e9ed; --map-muted: #8f98a3;
    --ok: #3fb56f; --warn: #f0a92a; --bad: #ec5a43; --none: #808994; --marking: #e9ebee;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121519; --surface: #1a1e23; --band: #171a1f; --ink: #e8ebee; --muted: #9ba3ad; --line: #2b3138;
  --accent: #f5c02e; --accent-ink: #f5c02e; --on-accent: #1a1600;
  --asphalt: #0d0f12; --asphalt-2: #090b0d; --map-street: #343a42; --map-ink: #e6e9ed; --map-muted: #8f98a3;
  --ok: #3fb56f; --warn: #f0a92a; --bad: #ec5a43; --none: #808994; --marking: #e9ebee;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--f-body);
  -webkit-font-smoothing: antialiased;
}
.wrap { width: 100%; max-width: 1180px; margin-inline: auto; padding-inline: 16px; }
@media (min-width: 720px) { .wrap { padding-inline: 32px; } }

h1, h2, h3 { font-family: var(--f-display); text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: var(--step-4); font-weight: 900; line-height: 1.02; }
h2 { font-size: var(--step-3); font-weight: 800; line-height: 1.1; }
h3 { font-size: var(--step-1); font-weight: 800; line-height: 1.2; }
p { margin: 0; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.eyebrow {
  font: 600 var(--step--1)/1.3 var(--f-mono);
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink);
  margin-bottom: 0.75rem;
}

/* Header */
.site-head {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.head-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 12px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 900 1.3rem/1 var(--f-display); letter-spacing: -0.01em; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-mark .bm-bg { fill: var(--accent); }
.brand-mark .bm-line { stroke: var(--on-accent); }
.head-nav { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: var(--step--1); }
.head-nav a { text-decoration: none; color: var(--muted); }
.head-nav a:hover { color: var(--ink); }
.head-nav .nav-cta { color: var(--ink); font-weight: 700; border-bottom: 2px solid var(--accent); padding-bottom: 1px; }
@media (max-width: 640px) { .head-nav a:not(.nav-cta) { display: none; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font: 800 1rem/1 var(--f-display); text-decoration: none; cursor: pointer;
  padding: 0.85rem 1.25rem; border-radius: 8px; border: 2px solid transparent;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }

/* Hero */
.hero { display: grid; gap: 40px; padding-block: 56px 72px; }
.hero-copy { max-width: 46rem; display: grid; gap: 1.25rem; }
.lede { font-size: var(--step-1); line-height: 1.5; color: var(--muted); max-width: 40rem; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Board (dark asphalt panel in both themes) */
.board {
  background: var(--asphalt); color: var(--map-ink);
  border-radius: 14px; overflow: hidden;
  box-shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 24px 48px -28px rgba(10, 14, 20, 0.55);
}
.board-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 10px 12px; background: var(--asphalt-2); border-bottom: 1px solid var(--map-street);
}
.board-tabs { display: flex; gap: 4px; flex-wrap: wrap; min-width: 0; }
.board-tabs button {
  font: 600 var(--step--1)/1.2 var(--f-display); color: var(--map-muted);
  background: transparent; border: 0; border-radius: 6px; padding: 9px 12px; cursor: pointer;
}
.board-tabs button:hover { color: var(--map-ink); background: var(--map-street); }
.board-tabs button[aria-selected="true"] { color: var(--on-accent); background: var(--accent); }
.chip-demo {
  font: 600 0.72rem/1 var(--f-mono); text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--accent); border: 1px dashed var(--accent); border-radius: 999px; padding: 6px 10px;
}
.board-body { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); }
@media (max-width: 880px) { .board-body { grid-template-columns: minmax(0, 1fr); } }
.map-wrap { margin: 0; padding: 12px; min-width: 0; display: grid; gap: 8px; }
#map { width: 100%; height: auto; display: block; }
#map .seg { stroke-linecap: round; stroke-linejoin: round; cursor: pointer; transition: stroke 0.25s; }
#map .seg:hover { stroke: var(--map-ink) !important; }
#map .ctx { stroke: var(--map-street); stroke-opacity: 0.55; stroke-linecap: round; stroke-linejoin: round; pointer-events: none; }
#map .seg-base { stroke: var(--map-street); stroke-linecap: round; stroke-linejoin: round; }
#map .route { stroke: var(--accent); stroke-dasharray: 1.5 5; stroke-linecap: round; fill: none; pointer-events: none; }
#map .hl { stroke: var(--map-ink); stroke-width: 6; stroke-opacity: 0.55; stroke-linecap: round; stroke-linejoin: round; fill: none; pointer-events: none; }
#map .street-label { font: 600 8px var(--f-mono); fill: var(--map-muted); letter-spacing: 0.03em; paint-order: stroke; stroke: var(--asphalt); stroke-width: 3px; stroke-linejoin: round; pointer-events: none; }
#map .street-label.is-major { font-size: 9.5px; fill: var(--map-ink); letter-spacing: 0.08em; }
#map .junction { fill: none; stroke: var(--accent); stroke-width: 2; }
#map .north { fill: var(--map-ink); }
#map .scale { fill: none; stroke: var(--map-ink); stroke-width: 1.5; }
#map .marker { cursor: pointer; }
#map .marker:hover .mk-shape, #map .marker.is-sel .mk-shape { stroke-width: 3; }
#map .pothole { fill: var(--asphalt); stroke: var(--map-ink); stroke-width: 1; pointer-events: none; }
.map-foot { display: flex; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap; font: 400 0.75rem/1.4 var(--f-mono); color: var(--map-muted); }
.legend { display: flex; gap: 12px; flex-wrap: wrap; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 14px; height: 4px; border-radius: 2px; display: inline-block; }
.legend i.dot { width: 10px; height: 10px; border-radius: 50%; }

.board-panel { padding: 16px; border-left: 1px solid var(--map-street); min-width: 0; display: grid; gap: 16px; align-content: start; }
@media (max-width: 880px) { .board-panel { border-left: 0; border-top: 1px solid var(--map-street); } }
.kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.kpi { background: var(--asphalt-2); border-radius: 8px; padding: 10px; min-width: 0; }
.kpi b { display: block; font: 800 1.45rem/1.1 var(--f-display); font-variant-numeric: tabular-nums; }
.kpi span { font: 400 0.72rem/1.3 var(--f-mono); color: var(--map-muted); }
.panel-h { font: 600 0.72rem/1.3 var(--f-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--map-muted); margin-bottom: 6px; }
.rows { list-style: none; margin: 0; padding: 0; display: grid; }
.rows li { border-top: 1px solid var(--map-street); }
.rows button {
  width: 100%; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 10px; align-items: center;
  background: none; border: 0; color: inherit; text-align: left; padding: 8px 2px; cursor: pointer;
  font: 400 0.85rem/1.3 var(--f-body);
}
.rows button:hover, .rows button.is-sel { background: var(--asphalt-2); }
.rows .r-main { min-width: 0; }
.rows .r-main small { display: block; color: var(--map-muted); font-size: 0.75rem; }
.rows .r-val { font: 600 0.8rem/1 var(--f-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.sw { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.bar { height: 6px; border-radius: 3px; background: var(--map-street); overflow: hidden; width: 64px; }
.bar i { display: block; height: 100%; }
.subtabs { display: flex; gap: 6px; flex-wrap: wrap; }
.subtabs button {
  font: 600 0.75rem/1 var(--f-mono); color: var(--map-muted); background: var(--asphalt-2);
  border: 1px solid var(--map-street); border-radius: 999px; padding: 6px 10px; cursor: pointer;
}
.subtabs button[aria-pressed="true"] { color: var(--map-ink); border-color: var(--map-ink); }
.board-detail {
  border-top: 1px solid var(--map-street); padding: 12px 16px; min-height: 3.2rem;
  font: 400 0.85rem/1.5 var(--f-mono); color: var(--map-muted);
}
.board-detail strong { color: var(--map-ink); font-weight: 600; }
.sev { font: 600 0.7rem/1 var(--f-mono); text-transform: uppercase; letter-spacing: 0.06em; padding: 3px 6px; border-radius: 4px; color: var(--asphalt-2); }
.sev.alta { background: var(--bad); } .sev.media { background: var(--warn); } .sev.baja { background: var(--ok); }

/* Sections */
.section { padding-block: 72px; display: grid; gap: 1rem; }
.section > h2 { max-width: 34ch; }
.section-lede { color: var(--muted); max-width: 62ch; }
.band { background: var(--band); border-block: 1px solid var(--line); }
.two-col { display: grid; gap: 24px 64px; padding-block: 64px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 860px) { .two-col { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); } }
.problem-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; max-width: 62ch; }
.problem-list li { padding-left: 1.25rem; border-left: 3px solid var(--line); }
.problem-list strong { font-family: var(--f-display); font-weight: 800; }

/* Steps: the lane line runs through the numbers */
.steps { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 28px; grid-template-columns: repeat(4, minmax(0, 1fr)); position: relative; }
.steps::before {
  content: ""; position: absolute; left: 20px; right: 20px; top: 20px; height: 4px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 22px, transparent 22px 40px);
}
.steps li { position: relative; display: grid; gap: 0.5rem; align-content: start; }
.steps p { color: var(--muted); font-size: 0.98rem; }
.step-n {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  background: var(--ink); color: var(--bg); font: 900 1.2rem/1 var(--f-display); margin-bottom: 0.5rem;
}
@media (max-width: 860px) {
  .steps { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .steps::before { left: 20px; right: auto; top: 22px; bottom: 22px; width: 4px; height: auto;
    background: repeating-linear-gradient(180deg, var(--accent) 0 18px, transparent 18px 32px); }
  .steps li { padding-left: 64px; }
  .step-n { position: absolute; left: 0; top: 0; }
}

/* Modules */
.modules { display: grid; gap: 20px; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 1.5rem; }
@media (max-width: 960px) { .modules { grid-template-columns: minmax(0, 1fr); } }
.module { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: grid; gap: 1rem; align-content: start; min-width: 0; }
.module header { display: grid; gap: 0.4rem; }
.module > p { color: var(--muted); }
.mod-tag { font: 600 0.72rem/1 var(--f-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); }
.terms { margin: 0; display: grid; gap: 0.9rem; }
.terms div { display: grid; gap: 0.2rem; padding-top: 0.9rem; border-top: 1px solid var(--line); }
.terms dt { font: 800 0.98rem/1.3 var(--f-display); display: flex; align-items: center; gap: 8px; }
.terms dd { margin: 0; color: var(--muted); font-size: 0.95rem; }
.pills { display: flex; gap: 6px; flex-wrap: wrap; }
.pill { font: 600 0.75rem/1 var(--f-mono); padding: 5px 8px; border-radius: 999px; border: 1px solid; }
.s-ok { color: var(--ok); border-color: var(--ok); background: color-mix(in srgb, var(--ok) 10%, transparent); }
.s-warn { color: var(--accent-ink); border-color: var(--warn); background: color-mix(in srgb, var(--warn) 14%, transparent); }
.s-bad { color: var(--bad); border-color: var(--bad); background: color-mix(in srgb, var(--bad) 10%, transparent); }
.s-none { color: var(--muted); border-color: var(--none); background: color-mix(in srgb, var(--none) 10%, transparent); }
.glyph { width: 14px; height: 14px; display: inline-block; flex: none; }
.g-vert { background: var(--accent); transform: rotate(45deg) scale(0.8); border: 1.5px solid var(--ink); }
.g-horiz { background: repeating-linear-gradient(90deg, var(--ink) 0 3px, transparent 3px 5px); height: 10px; }
.g-sema { border-radius: 50%; background: var(--asphalt); border: 3px solid var(--bad); }

/* Compare table */
.table-scroll { overflow-x: auto; margin-top: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.compare { width: 100%; border-collapse: collapse; min-width: 560px; font-size: 0.96rem; }
.compare th, .compare td { text-align: left; padding: 14px 16px; border-top: 1px solid var(--line); vertical-align: top; }
.compare thead th { border-top: 0; font: 800 1rem/1.2 var(--f-display); }
.compare thead th:last-child { box-shadow: inset 0 -3px 0 var(--accent); }
.compare tbody th { font: 600 0.78rem/1.4 var(--f-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); width: 9rem; }
.compare td { color: var(--muted); }
.compare td:last-child { color: var(--ink); }

/* Audiences */
.audiences { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 28px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 960px) { .audiences { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .audiences { grid-template-columns: minmax(0, 1fr); } }
.audiences li { display: grid; gap: 0.4rem; align-content: start; padding-top: 14px; border-top: 3px solid var(--ink); }
.audiences p { color: var(--muted); font-size: 0.96rem; }

/* Contact */
.contact { grid-template-columns: minmax(0, 1fr); gap: 32px 64px; align-items: start; }
@media (min-width: 860px) { .contact { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.contact > div { display: grid; gap: 1rem; }
.contact-form { display: grid; gap: 6px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.contact-form label { font: 600 0.8rem/1.3 var(--f-mono); color: var(--muted); margin-top: 8px; }
.contact-form input, .contact-form select {
  font: 400 1rem/1.4 var(--f-body); color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; width: 100%;
}
.contact-form input:focus, .contact-form select:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
.contact-form .btn { margin-top: 16px; }
.form-note { font: 400 0.8rem/1.4 var(--f-mono); color: var(--muted); }
.form-note.is-done { color: var(--ok); }
.form-note.is-error { color: var(--bad); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.site-foot { border-top: 1px solid var(--line); }
.foot-row { display: flex; justify-content: space-between; gap: 8px 24px; flex-wrap: wrap; padding-block: 24px; font-size: var(--step--1); color: var(--muted); }
.foot-row strong { color: var(--ink); font-family: var(--f-display); }