:root {
  --bg: #1b1916;
  --panel: #242019;
  --ink: #f0e9dc;
  --ink-dim: #bcae96;
  --ink-faint: #7d7360;
  --line: #3c352a;
  --amber: #f2b134;
  --paint: #efe9d8;
  --old: #948d78;
  --new: #17140f;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Work Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "Space Mono", "SFMono-Regular", Consolas, monospace;
  --wrap: 760px;
}

* { box-sizing: border-box; }
html { background: var(--bg); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 22px; }

.top { padding: 16px 22px; font-size: 14px; }
.top a { color: var(--ink-faint); text-decoration: none; }
.top a:hover { color: var(--amber); }

.masthead { padding-top: 8px; padding-bottom: 12px; }
.kicker {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 16px;
}
h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 56px;
  line-height: 1.06;
  margin: 0 0 18px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.deck {
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.5;
  color: var(--ink-dim);
  margin: 0 0 6px;
  font-weight: 500;
}

article { padding-bottom: 8px; }
p { margin: 0 0 22px; color: var(--ink); }
p.lede { font-size: 20px; }
a { color: var(--amber); }

h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 27px;
  margin: 0 0 16px;
  color: var(--ink);
}

.langbar { margin: 18px 0 6px; font-size: 14px; color: var(--ink-faint); }
.langbar a { color: var(--ink-dim); text-decoration: none; border-bottom: 1px solid var(--line); }
.langbar a:hover { color: var(--amber); border-color: var(--amber); }
.langbar .current { color: var(--amber); }

/* --- road instrument --- */
.instrument {
  margin: 44px 0 40px;
  padding: 30px 22px 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.instrument-caption {
  text-align: center;
  font-size: 14px;
  color: var(--ink-faint);
  margin: 0 0 26px;
}

.road-wrap { padding: 10px 4px 0; }

.road-track {
  position: relative;
  height: 54px;
  border-radius: 3px;
  cursor: pointer;
  touch-action: pan-y;
  background: linear-gradient(
    to right,
    var(--old) 0%,
    #8f8874 6.7%,
    #8a8371 7.9%,
    #766f5f 14.7%,
    #6b6456 18.3%,
    #52493c 34.9%,
    #3a352c 56.4%,
    #221f1a 89.2%,
    var(--new) 100%
  );
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.35);
}

.road-dashes {
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 3px;
  transform: translateY(-50%);
  background-image: repeating-linear-gradient(to right, var(--paint) 0 16px, transparent 16px 30px);
  opacity: 0.85;
  pointer-events: none;
}

.road-posts { position: relative; height: 44px; margin-top: 2px; }
.road-post {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  width: 1px;
  height: 7px;
  background: var(--line);
}
.road-post-label {
  position: absolute;
  top: 10px;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-faint);
  white-space: nowrap;
}
.road-post-label.lo { top: 25px; }

.road-marker {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 22px;
  height: 22px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--amber);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px var(--amber), 0 2px 6px rgba(0,0,0,0.5);
  cursor: grab;
}
.road-marker:active { cursor: grabbing; }
.road-marker:focus-visible { outline: 2px solid var(--paint); outline-offset: 3px; }

.road-readout {
  text-align: center;
  margin-top: 22px;
  min-height: 4.6em;
}
.road-readout .km {
  display: block;
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: -0.01em;
}
.road-readout .sub {
  display: block;
  font-size: 14.5px;
  color: var(--ink-dim);
  margin-top: 6px;
}
.road-readout .note {
  display: block;
  font-size: 15px;
  color: var(--ink);
  margin-top: 10px;
  min-height: 1.4em;
}

/* --- stat strip --- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  margin: 8px 0 36px;
}
.stat { background: var(--panel); padding: 20px 14px; text-align: center; }
.stat .num { font-family: var(--mono); font-size: 23px; font-weight: 700; color: var(--amber); display: block; }
.stat .lbl { font-size: 12.5px; color: var(--ink-faint); margin-top: 6px; display: block; line-height: 1.4; }

.method {
  font-size: 14.5px;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin-top: 8px;
}

footer.wrap { padding: 30px 22px 60px; font-size: 13.5px; color: var(--ink-faint); }
footer a { color: var(--ink-dim); }

@media (max-width: 480px) {
  h1 { font-size: 32px; }
  .deck { font-size: 18px; }
  body { font-size: 16.5px; }
  .stats { grid-template-columns: 1fr; }
  .road-readout .km { font-size: 24px; }
  .road-post-label { font-size: 9.5px; }
}

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