:root {
  color-scheme: dark;
  --bg: #101918;
  --panel: #172321;
  --ink: #ecf4ee;
  --muted: #b1c5ba;
  --line: #364b45;
  --mint: #a4f3c3;
  --mono: ui-monospace, Consolas, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 system-ui, sans-serif; }
a { color: inherit; text-decoration: none; }
button, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; }
.skip { position: absolute; top: -60px; left: 1rem; z-index: 5; padding: .6rem; background: var(--bg); }
.skip:focus { top: .5rem; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); padding: 18px max(22px, calc((100% - 1430px)/2)); }
.brand { white-space: nowrap; font-size: 19px; font-weight: 750; letter-spacing: .15em; }
.brand span { display: inline-grid; place-items: center; width: 33px; height: 33px; margin-right: 7px; border-radius: 8px; color: #10271c; background: var(--mint); }
.brand small, .top-label, .eyebrow, .badge, .map-label, .map-foot, footer span { font: 11px/1.5 var(--mono); letter-spacing: .09em; }
.brand small, .top-label, .eyebrow { color: var(--muted); }
.badge { display: inline-block; border: 1px solid #436856; color: var(--mint); padding: 6px 8px; border-radius: 5px; white-space: nowrap; }
main { max-width: 1490px; margin: auto; padding: 0 26px; }
.hero { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding: 36px 0 30px; }
.hero h1 { margin: 8px 0 0; font-size: clamp(37px, 5.2vw, 72px); line-height: .99; letter-spacing: -.065em; font-weight: 650; }
.hero h1 em { color: var(--mint); font-style: normal; }
.hero > p { max-width: 355px; color: var(--muted); margin: 0 0 4px; }
.layout { display: grid; grid-template-columns: 205px minmax(0, 1fr); gap: 14px; }
.rail, .board { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; min-width: 0; }
.rail { padding: 16px 12px; }
.rail .eyebrow { padding-left: 8px; }
.modules { display: grid; gap: 5px; }
.modules button { display: flex; align-items: center; gap: 9px; text-align: left; background: transparent; border: 1px solid transparent; border-radius: 7px; padding: 9px 8px; min-height: 44px; }
.modules button:hover, .modules button[aria-pressed="true"] { background: #233a31; border-color: #46705b; }
.modules button span { font: 11px var(--mono); color: var(--mint); }
.rail-foot { color: var(--muted); padding: 16px 8px 0; margin-top: 18px; border-top: 1px solid var(--line); font-size: 12px; }
.board-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 13px 18px; border-bottom: 1px solid var(--line); }
.board-header .eyebrow, .inspector .eyebrow { margin: 0; }
h2 { margin: 3px 0 0; font-size: 24px; line-height: 1.2; }
.board-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(245px, 31%); }
.map-column { min-width: 0; }
.map { position: relative; min-height: 470px; background: #1c3631; }
.map svg, .zones { position: absolute; inset: 0; width: 100%; height: 100%; }
.map-label, .map-foot, .north { position: absolute; z-index: 1; pointer-events: none; }
.map-label, .map-foot { left: 13px; right: 13px; display: flex; gap: 8px; justify-content: space-between; color: #d5ebdb; }
.map-label { top: 12px; }
.map-foot { bottom: 10px; }
.north { right: 15px; top: 38px; text-align: center; font: 16px/1.2 var(--mono); }
#contours { stroke: #89bd9f; stroke-width: 1; fill: none; opacity: .43; }
#drainage { stroke: #7cdded; stroke-width: 3; opacity: .7; fill: none; }
#boundary { stroke: #baf9cd; stroke-width: 2; stroke-dasharray: 8 5; fill: #a4f3c315; }
.zones button { position: absolute; top: var(--y); left: var(--x); transform: translate(-50%, -50%); width: 42px; height: 42px; border: 1px solid #a4f3c3; background: #183b2e; border-radius: 50%; font-weight: 700; }
.zones button[aria-pressed="true"] { background: var(--mint); color: #10271c; box-shadow: 0 0 0 7px #a4f3c33a; }
.layers { display: flex; flex-wrap: wrap; align-items: center; gap: 5px 14px; margin: 0; padding: 6px 14px 12px; border: 0; }
.layers legend { padding-top: 8px; color: var(--muted); font-size: 12px; }
.layers label { display: inline-flex; align-items: center; gap: 4px; min-height: 32px; font-size: 13px; }
.layers input { accent-color: var(--mint); }
.layers button, .actions button { border: 1px solid var(--line); background: #24352f; border-radius: 6px; padding: 6px 9px; }
.inspector { min-width: 0; border-left: 1px solid var(--line); padding: 16px; }
.inspector h3 { font-size: 21px; line-height: 1.2; margin: 7px 0; }
.inspector p, dd { color: var(--muted); font-size: 13px; }
dl { margin: 12px 0; }
dl div { padding: 8px 0; border-top: 1px solid var(--line); }
dt, .inspector label { font-size: 12px; font-weight: 700; }
dd { margin: 2px 0 0; }
textarea { display: block; width: 100%; margin: 6px 0 8px; padding: 8px; background: #101918; border: 1px solid var(--line); border-radius: 6px; resize: vertical; }
.actions { display: flex; flex-wrap: wrap; gap: 7px; font-size: 13px; }
.actions #export { background: var(--mint); color: #10271c; border-color: var(--mint); font-weight: 700; }
.status { min-height: 2.7em; margin-bottom: 0; }
footer { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; padding: 18px 0; color: var(--muted); font-size: 12px; }
footer p { margin: 0; }
@media (max-width: 1060px) {
  .layout { grid-template-columns: 1fr; }
  .modules { grid-template-columns: repeat(auto-fit, minmax(145px, 1fr)); }
  .rail-foot { display: none; }
}
@media (max-width: 650px) {
  main { padding: 0 12px; }
  .top { padding: 12px; }
  .top-label, .brand small { display: none; }
  .hero { display: block; padding: 25px 3px 20px; }
  .hero > p { margin-top: 12px; }
  .board-grid { grid-template-columns: 1fr; }
  .map { min-height: 330px; }
  .inspector { border-left: 0; border-top: 1px solid var(--line); }
  footer { display: block; }
}