/* Urban Roofing Services - where the rain goes.
   The page is one roof section running downhill: each stop sits a tread further right, and the
   right edge is the downpipe the water ends in. Mobile first; the pipe becomes a rail at 820px. */

@font-face {
  font-family: "Darker Grotesque";
  src: url("fonts/darker-grotesque-latin.woff2") format("woff2");
  font-weight: 300 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Kameron";
  src: url("fonts/kameron-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --rwy-bg: #0E1218;
  --rwy-panel: #161C25;
  --rwy-ink: #E9EEF5;
  --rwy-muted: #94A0B2;
  --rwy-rain: #6E9DD9;
  --rwy-copper: #C98C5B;

  --rwy-tile: #1D2531;
  --rwy-tile-up: #283447;
  --rwy-iron: #2C3646;
  --rwy-iron-hi: #45536A;
  --rwy-edge: #3B4859;
  --rwy-well: #0A0D12;
  --rwy-rain-deep: #24456F;
  --rwy-ink-dim: rgba(233, 238, 245, 0.82);
  --rwy-line: rgba(148, 160, 178, 0.34);
  --rwy-faint: rgba(148, 160, 178, 0.14);
  --rwy-rain-glow: rgba(110, 157, 217, 0.32);
  --rwy-rain-pale: rgba(110, 157, 217, 0.14);
  --rwy-copper-soft: rgba(201, 140, 91, 0.2);
  --rwy-night: rgba(10, 13, 18, 0.94);
  --rwy-night-mid: rgba(10, 13, 18, 0.72);
  --rwy-night-low: rgba(10, 13, 18, 0.4);
  --rwy-night-0: rgba(10, 13, 18, 0);
  --rwy-focus: #E0A472;
  --rwy-mask: #000;

  /* drawing materials */
  --rwy-d-slate: #232C39;
  --rwy-d-slate-edge: #4A5870;
  --rwy-d-slip: #2E3A4D;
  --rwy-d-timber: #4D3A2B;
  --rwy-d-batten: #7A5A3E;
  --rwy-d-brick: #5E4232;
  --rwy-d-joint: #3F2C21;
  --rwy-d-mortar: #6F6A63;
  --rwy-d-pot: #A9643F;
  --rwy-d-lead: #7F8B9B;
  --rwy-d-iron: #3F4A5C;
  --rwy-d-leaf: #8D6B3A;
  --rwy-d-membrane: #2F3540;
  --rwy-d-firring: #5B4532;

  --rwy-display: "Darker Grotesque", "Arial Narrow", sans-serif;
  --rwy-body: "Kameron", "Rockwell", Georgia, serif;
  --rwy-rail: 0px;
  --rwy-gap: 20px;
  --rwy-tread: 0px;
  --rwy-band-h: 62vw;
}

/* reset, zero-specificity so components never fight it */
:where(*, *::before, *::after) { box-sizing: border-box; }
:where(body, h1, h2, h3, p, ol, ul, dl, dd, figure, fieldset, legend) { margin: 0; padding: 0; }
:where(ul, ol) { list-style: none; }
:where(img, svg, picture) { display: block; max-width: 100%; }
:where(input, select, textarea, button) { font: inherit; color: inherit; }
:where(fieldset) { border: 0; min-width: 0; }
[hidden] { display: none !important; }

html { background-color: var(--rwy-bg); -webkit-text-size-adjust: 100%; scroll-padding-top: 16px; }

body {
  min-height: 100vh;
  color: var(--rwy-ink);
  background-color: var(--rwy-bg);
  background-image: url("images/rwy-slate-ground.webp");
  background-size: 512px 512px;
  font-family: var(--rwy-body);
  font-size: 1rem;
  line-height: 1.62;
  overflow-x: clip;
}

a { color: var(--rwy-rain); text-decoration-thickness: 0.08em; text-underline-offset: 0.18em; transition: color 0.15s ease, text-underline-offset 0.15s ease; }
a:hover { text-underline-offset: 0.28em; }
a:hover { color: var(--rwy-ink); }
:focus-visible { outline: 3px solid var(--rwy-focus); outline-offset: 3px; border-radius: 3px; }

h1, h2, h3 { font-family: var(--rwy-display); color: var(--rwy-ink); text-wrap: balance; }
h2 { font-size: clamp(2.05rem, 7.4vw, 3.5rem); font-weight: 820; line-height: 0.94; letter-spacing: -0.005em; }
h3 { font-size: 1.55rem; font-weight: 800; line-height: 1; }
p + p { margin-top: 0.9em; }

.rwy-skip {
  position: absolute; left: 12px; top: -80px; z-index: 50;
  padding: 12px 18px; border-radius: 6px;
  background: var(--rwy-rain); color: var(--rwy-bg);
  font: 800 1.15rem/1 var(--rwy-display); text-decoration: none;
  transition: top 0.2s ease;
}
.rwy-skip:focus { top: 12px; }

/* ------------------------------------------------------------------ the downpipe (masthead on phones) */
.rwy-pipe {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: "place hopper" "run run";
  align-items: start;
  gap: 10px 14px;
  padding: 16px var(--rwy-gap) 0;
  background-color: var(--rwy-panel);
  box-shadow: inset 0 -3px 0 var(--rwy-iron);
}
.rwy-place {
  grid-area: place; align-self: end; padding-bottom: 6px;
  font: 700 1.05rem/1.15 var(--rwy-display); letter-spacing: 0.04em; color: var(--rwy-muted);
  max-width: 13em;
}
.rwy-hopper {
  grid-area: hopper; display: flex; flex-direction: column; align-items: flex-end; gap: 8px;
  padding: 4px 2px; text-decoration: none; border-radius: 6px;
}
.rwy-hopper-mark { width: 72px; height: auto; }
.rwy-hopper-stack { width: 118px; height: auto; }
.rwy-barrel { display: none; }

.rwy-run { grid-area: run; margin: 6px calc(-1 * var(--rwy-gap)) 0; }
.rwy-run ul {
  display: flex; gap: 8px; overflow-x: auto; scroll-snap-type: x proximity;
  padding: 4px var(--rwy-gap) 14px; scrollbar-width: thin;
  -webkit-mask-image: linear-gradient(90deg, var(--rwy-mask) calc(100% - 28px), transparent);
          mask-image: linear-gradient(90deg, var(--rwy-mask) calc(100% - 28px), transparent);
}
.rwy-run li { flex: 0 0 auto; scroll-snap-align: start; }
.rwy-run a {
  position: relative; display: flex; align-items: center; min-height: 48px;
  padding: 10px 16px; border-radius: 6px 6px 3px 3px;
  background-color: var(--rwy-tile);
  border-top: 4px solid var(--rwy-iron-hi);
  color: var(--rwy-ink); text-decoration: none; white-space: nowrap;
  font: 760 1.2rem/1 var(--rwy-display); letter-spacing: 0.01em;
  transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}
.rwy-run a:hover { background-color: var(--rwy-tile-up); border-top-color: var(--rwy-rain); }
.rwy-run a[aria-current="page"] {
  background-color: var(--rwy-rain); border-top-color: var(--rwy-ink); color: var(--rwy-bg);
}

/* ------------------------------------------------------------------ main, the slope */
main { display: block; }
[data-step="1"] { --rwy-step: 1; }
[data-step="2"] { --rwy-step: 2; }
[data-step="3"] { --rwy-step: 3; }
[data-step="4"] { --rwy-step: 4; }
[data-step="5"] { --rwy-step: 5; }

.rwy-tread {
  padding-inline: calc(var(--rwy-gap) + var(--rwy-step, 0) * var(--rwy-tread)) var(--rwy-gap);
}

.rwy-tag, .rwy-stop {
  font: 760 1rem/1.15 var(--rwy-display); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--rwy-copper);
}
.rwy-stop { margin-bottom: 0.7rem; display: inline-flex; align-items: center; gap: 0.6em; }
.rwy-stop::before {
  content: ""; width: 0.62em; height: 0.86em; flex: none;
  background-color: var(--rwy-rain);
  border-radius: 50% 50% 50% 50% / 62% 62% 38% 38%;
  transform: rotate(180deg);
}
.rwy-stop--light { color: var(--rwy-ink); }

.rwy-btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 52px;
  padding: 12px 22px; border-radius: 999px;
  background-color: var(--rwy-rain); color: var(--rwy-bg);
  font: 800 1.25rem/1 var(--rwy-display); letter-spacing: 0.02em; text-decoration: none;
  border: 0; cursor: pointer;
  box-shadow: 0 6px 0 var(--rwy-rain-deep);
  transition: transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}
.rwy-btn:hover { color: var(--rwy-bg); background-color: var(--rwy-ink); transform: translateY(2px); box-shadow: 0 4px 0 var(--rwy-rain-deep); }
.rwy-btn:active { transform: translateY(5px); box-shadow: 0 1px 0 var(--rwy-rain-deep); }
.rwy-btn--hollow {
  background-color: var(--rwy-night-mid); color: var(--rwy-ink);
  box-shadow: inset 0 0 0 3px var(--rwy-ink);
}
.rwy-btn--hollow:hover { background-color: var(--rwy-ink); color: var(--rwy-bg); box-shadow: inset 0 0 0 3px var(--rwy-ink); }
.rwy-btn--small { min-height: 48px; font-size: 1.15rem; padding: 10px 20px; }
.rwy-acts { display: flex; flex-wrap: wrap; gap: 14px 16px; margin-top: 1.6rem; }

/* ------------------------------------------------------------------ the sky (index opener) */
.rwy-sky {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto;
}
.rwy-sky-art, .rwy-sky-shade { grid-area: 1 / 1 / 2 / 2; }
.rwy-sky-art { height: min(150vw, 620px); overflow: clip; }
.rwy-sky-art img { width: 100%; height: 100%; object-fit: cover; object-position: 62% 50%; }
.rwy-sky-shade {
  background-image:
    linear-gradient(180deg, var(--rwy-night) 0%, var(--rwy-night-mid) 36%, var(--rwy-night-0) 64%),
    linear-gradient(0deg, var(--rwy-bg) 0%, var(--rwy-night-0) 22%);
}
.rwy-sky-title {
  grid-area: 1 / 1 / 2 / 2; align-self: start; position: relative; z-index: 1;
  padding: 28px var(--rwy-gap) 0 calc(var(--rwy-gap) + 34px);
}
.rwy-sky-title .rwy-tag { color: var(--rwy-ink); max-width: 22em; }
.rwy-sky h1 {
  margin-top: 0.9rem;
  font-size: clamp(3.4rem, 17vw, 9.4rem); font-weight: 900; line-height: 0.8; letter-spacing: -0.012em;
  max-width: 6.2em;
}
.rwy-sky-more { grid-area: 2 / 1 / 3 / 2; position: relative; z-index: 1; padding: 6px var(--rwy-gap) 8px calc(var(--rwy-gap) + 34px); }
.rwy-lede { font-size: 1.12rem; line-height: 1.55; max-width: 34em; color: var(--rwy-ink); }
.rwy-first, .rwy-first-line { position: absolute; z-index: 1; pointer-events: none; grid-area: 1 / 1 / 2 / 2; }
.rwy-first { left: calc(var(--rwy-gap) + 2px); top: 30px; width: 22px; height: 36px; }
.rwy-first-line { left: calc(var(--rwy-gap) + 11px); top: 74px; width: 3px; height: calc(100% - 74px); overflow: visible; }
.rwy-first-drop { fill: var(--rwy-rain); }
.rwy-first-run { fill: none; stroke: var(--rwy-rain); stroke-width: 3; stroke-linecap: round; }

/* ------------------------------------------------------------------ the ridge statement */
.rwy-ridge { padding: 64px var(--rwy-gap) 40px calc(var(--rwy-gap) + 34px); }
.rwy-ridge-in { display: grid; gap: 22px; max-width: 70rem; }
.rwy-ridge-tag { font: 800 clamp(1.05rem, 3.4vw, 1.3rem)/1.2 var(--rwy-display); letter-spacing: 0.1em; text-transform: uppercase; color: var(--rwy-rain); }
.rwy-ridge-big { font-size: clamp(2.3rem, 8.4vw, 4.4rem); font-weight: 850; line-height: 0.92; max-width: 13em; }
.rwy-ridge-mid { font: 600 clamp(1.35rem, 4.6vw, 1.9rem)/1.15 var(--rwy-display); color: var(--rwy-ink); max-width: 22em; }
.rwy-ridge-small { color: var(--rwy-ink-dim); max-width: 34em; }
.rwy-ridge p + p, .rwy-ridge h2 + p { margin-top: 0; }

/* ------------------------------------------------------------------ bands: full bleed, edge to edge */
.rwy-band { position: relative; overflow: clip; display: grid; }
.rwy-band > img { grid-area: 1 / 1; width: 100%; height: var(--rwy-band-h); object-fit: cover; }
.rwy-band > :not(img) { grid-area: 1 / 1; position: relative; z-index: 1; }

.rwy-band-say {
  align-self: end; padding: 0 var(--rwy-gap) 22px;
  font: 800 clamp(1.5rem, 6vw, 2.6rem)/1 var(--rwy-display); color: var(--rwy-ink);
  max-width: 16em;
}
.rwy-band--letter { --rwy-band-h: 46vw; }
.rwy-band--letter > img { object-position: 50% 50%; }
.rwy-band--letter::after {
  content: ""; grid-area: 1 / 1; z-index: 0;
  background-image: linear-gradient(180deg, var(--rwy-night-mid) 0%, var(--rwy-night-low) 34%, var(--rwy-night-0) 60%);
}
.rwy-band--letter .rwy-band-say { align-self: start; padding-top: 24px; }
.rwy-band--slim::after {
  content: ""; grid-area: 1 / 1; z-index: 0;
  background-image: linear-gradient(0deg, var(--rwy-night) 0%, var(--rwy-night-mid) 42%, var(--rwy-night-0) 78%);
}

.rwy-band--storm { --rwy-band-h: 96vw; }
.rwy-band--storm > img { object-position: 38% 50%; }
.rwy-band-head { align-self: start; padding: 26px var(--rwy-gap) 0; max-width: min(34rem, 74%); }
.rwy-band-head h2 { max-width: 9.5em; }

.rwy-band--brick { --rwy-band-h: auto; }
.rwy-band--brick > img { height: 64vw; grid-area: 1 / 1; }
.rwy-band-over {
  grid-area: 2 / 1 !important;
  padding: 22px var(--rwy-gap) 8px;
}
.rwy-band-over p:last-child { color: var(--rwy-ink-dim); max-width: 34em; }

.rwy-band--dusk { --rwy-band-h: 84vw; }
.rwy-band--dusk > img { object-position: 76% 50%; }
.rwy-band--dusk::after {
  content: ""; grid-area: 1 / 1; z-index: 0;
  background-image: linear-gradient(180deg, var(--rwy-night-mid) 0%, var(--rwy-night-low) 34%, var(--rwy-night-0) 62%);
}
.rwy-band-say--sky {
  align-self: start; padding: 26px var(--rwy-gap) 0; max-width: 12.5em;
  font-size: clamp(1.7rem, 7.2vw, 3.2rem);
}

/* ------------------------------------------------------------------ junction sections */
.rwy-junction { padding-bottom: 72px; }
.rwy-junction > .rwy-tread { padding-top: 40px; }
.rwy-copy { max-width: 36rem; }
.rwy-copy h2 { margin-bottom: 1.1rem; }
.rwy-copy > p:not(.rwy-stop) { color: var(--rwy-ink); }
.rwy-fig { margin-top: 32px; }
.rwy-tread--turned, .rwy-tread--annotated, .rwy-tread--low, .rwy-tread--instrument { display: grid; gap: 30px; }
.rwy-tread--turned .rwy-fig, .rwy-tread--annotated .rwy-fig, .rwy-tread--low .rwy-fig { margin-top: 0; }
.rwy-copy--pair p { max-width: 36rem; }
.rwy-fig--wide { padding-inline: var(--rwy-gap); max-width: 64rem; margin-inline: auto; }

/* the junction drawings */
.rwy-draw { width: 100%; height: auto; overflow: visible; }
.rwy-d-slate { fill: var(--rwy-d-slate); stroke: var(--rwy-d-slate-edge); stroke-width: 1.5; }
.rwy-d-slipped { fill: var(--rwy-d-slip); }
.rwy-d-timber { fill: var(--rwy-d-timber); }
.rwy-d-batten { fill: var(--rwy-d-batten); }
.rwy-d-nail { fill: var(--rwy-copper); }
.rwy-d-brick { fill: var(--rwy-d-brick); }
.rwy-d-course { fill: none; stroke: var(--rwy-d-joint); stroke-width: 2; }
.rwy-d-mortar { fill: var(--rwy-d-mortar); }
.rwy-d-pot { fill: var(--rwy-d-pot); }
.rwy-d-lead { fill: var(--rwy-d-lead); }
.rwy-d-metal { fill: var(--rwy-d-iron); }
.rwy-d-metalline { fill: none; stroke: var(--rwy-d-iron); stroke-width: 10; stroke-linecap: round; }
.rwy-d-pipeline { fill: none; stroke: var(--rwy-d-iron); stroke-width: 26; }
.rwy-d-bracket { fill: var(--rwy-d-lead); }
.rwy-d-void { fill: var(--rwy-well); }
.rwy-d-leaf { fill: var(--rwy-d-leaf); }
.rwy-d-membrane { fill: var(--rwy-d-membrane); }
.rwy-d-firring { fill: var(--rwy-d-firring); }
.rwy-d-water { fill: none; stroke: var(--rwy-rain); stroke-width: 5; stroke-linecap: round; stroke-linejoin: round; }
.rwy-d-pool { fill: var(--rwy-rain); opacity: 0.88; transform-box: fill-box; transform-origin: 50% 50%; }
.rwy-d-pool--fill { opacity: 0.62; transform-origin: 50% 100%; }
.rwy-d-leader { fill: none; stroke: var(--rwy-copper); stroke-width: 2; stroke-dasharray: 5 6; }
.rwy-d-pin { fill: var(--rwy-copper); }
.rwy-d-failtext { fill: var(--rwy-copper); font: 700 26px var(--rwy-display); letter-spacing: 0.02em; }
.rwy-d-failhead { font-size: 35px; font-weight: 850; }
.rwy-d-label { fill: var(--rwy-muted); font: 650 25px var(--rwy-display); letter-spacing: 0.04em; }
.rwy-d-small { font-size: 22px; }
.rwy-d-plan { fill: var(--rwy-d-slate); stroke: var(--rwy-d-slate-edge); stroke-width: 2; }
.rwy-d-courseline { fill: none; stroke: var(--rwy-d-slate-edge); stroke-width: 1.4; }
.rwy-d-joint { fill: none; stroke: var(--rwy-d-slate-edge); stroke-width: 1; }
.rwy-d-live { stroke-dasharray: none; }
/* phones keep only the failure's name inside a drawing, set large enough to read */
.rwy-draw .rwy-d-label, .rwy-draw .rwy-d-failtext:not(.rwy-d-failhead) { display: none; }
.rwy-draw .rwy-d-failhead { font-size: 46px; }
.rwy-draw-courses .rwy-d-label { display: inline; font-size: 30px; }
@media (min-width: 700px) {
  .rwy-draw .rwy-d-label, .rwy-draw .rwy-d-failtext:not(.rwy-d-failhead) { display: inline; }
  .rwy-draw .rwy-d-failhead { font-size: 35px; }
  .rwy-draw-courses .rwy-d-label { font-size: 25px; }
  .rwy-draw-courses .rwy-d-small { font-size: 22px; }
}

/* ------------------------------------------------------------------ tools */
.rwy-tool {
  position: relative; padding: 22px 18px 24px; border-radius: 12px;
  background-color: var(--rwy-panel);
  box-shadow: inset 0 4px 0 var(--rwy-copper), 0 18px 40px var(--rwy-night-mid);
}
.rwy-tool-h { font-size: clamp(1.8rem, 6vw, 2.5rem); font-weight: 850; line-height: 0.95; }
.rwy-tool-note { margin-top: 10px; color: var(--rwy-muted); font-size: 0.95rem; max-width: 40em; }
.rwy-tool > .rwy-pair, .rwy-tool > .rwy-btn, .rwy-tool-grid { margin-top: 18px; }
.rwy-tool-grid { display: grid; gap: 20px; }
.rwy-tool-ins { display: grid; gap: 14px; align-content: start; }
.rwy-pair { display: grid; gap: 14px; }
.rwy-field { display: grid; gap: 6px; }
.rwy-field > span { font: 700 1.08rem/1.15 var(--rwy-display); letter-spacing: 0.02em; color: var(--rwy-ink); }
.rwy-field input, .rwy-field select, .rwy-field textarea {
  width: 100%; min-height: 50px; padding: 11px 14px; border-radius: 8px;
  background-color: var(--rwy-well); color: var(--rwy-ink);
  border: 2px solid var(--rwy-edge);
  font-family: var(--rwy-body); font-size: 1.05rem;
  transition: border-color 0.16s ease, background-color 0.16s ease;
}
.rwy-field input:hover, .rwy-field select:hover, .rwy-field textarea:hover { border-color: var(--rwy-muted); }
.rwy-field input:focus, .rwy-field select:focus, .rwy-field textarea:focus { border-color: var(--rwy-rain); outline: 3px solid var(--rwy-rain-glow); outline-offset: 0; }
.rwy-field textarea { min-height: 120px; resize: vertical; }
.rwy-field input[aria-invalid="true"], .rwy-field select[aria-invalid="true"] { border-color: var(--rwy-copper); }

.rwy-readout {
  display: block; padding: 16px 18px; border-radius: 10px;
  background-color: var(--rwy-well); box-shadow: inset 4px 0 0 var(--rwy-rain);
  color: var(--rwy-ink-dim);
}
.rwy-readout > b { display: block; font: 900 clamp(2.4rem, 9vw, 3.4rem)/0.9 var(--rwy-display); color: var(--rwy-rain); margin-bottom: 8px; }
.rwy-readout > span { display: block; }
.rwy-readout > span + span { margin-top: 6px; }
.rwy-readout--table { display: grid; gap: 2px; padding: 8px 16px; }
.rwy-readout--table > .rwy-row { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 8px 0; margin-top: 0; }
.rwy-readout--table > .rwy-row + .rwy-row { box-shadow: inset 0 3px 0 -1px var(--rwy-faint); }
.rwy-row b { font: 700 1.05rem/1.2 var(--rwy-display); color: var(--rwy-muted); letter-spacing: 0.02em; }
.rwy-row i { font-style: normal; font: 800 1.35rem/1.15 var(--rwy-display); color: var(--rwy-ink); text-align: right; }
.rwy-readout--table > .rwy-row--msg { color: var(--rwy-copper); font-size: 0.95rem; justify-content: flex-start; }
.rwy-readout--table > .rwy-row--msg:empty { display: none; }
.rwy-readout [data-out="ratio"] { transition: color 0.2s ease; }
.rwy-tool[data-state="short"] [data-out="ratio"] { color: var(--rwy-copper); }

.rwy-fig--courses { margin-top: 22px; }
.rwy-fig--courses .rwy-draw { max-height: 430px; width: auto; max-width: 100%; margin-inline: auto; }
.rwy-fig--live { margin-top: 22px; }

/* ------------------------------------------------------------------ the ground: how a job starts */
.rwy-ground { padding-bottom: 80px; }
.rwy-tread--ground { padding-top: 44px; display: grid; gap: 26px; }
.rwy-first-three { display: grid; gap: 14px; counter-reset: rwy-first; }
.rwy-first-three li {
  counter-increment: rwy-first;
  display: grid; grid-template-columns: auto 1fr; gap: 4px 16px; align-items: baseline;
  padding: 18px 18px 18px 16px; border-radius: 10px;
  background-color: var(--rwy-panel);
  box-shadow: inset 4px 0 0 var(--rwy-rain);
}
.rwy-first-three li::before {
  content: counter(rwy-first); grid-row: 1 / span 2;
  font: 900 3.2rem/0.8 var(--rwy-display); color: var(--rwy-rain);
}
.rwy-first-three b { font: 850 1.7rem/1 var(--rwy-display); }
.rwy-first-three span { color: var(--rwy-ink-dim); }
.rwy-permits { max-width: 40rem; }
.rwy-permits > p:first-child { color: var(--rwy-ink-dim); }

/* ------------------------------------------------------------------ sub-page openers (caps) */
.rwy-cap .rwy-band > img { height: min(132vw, 580px); }
.rwy-cap .rwy-band::after, .rwy-cap .rwy-band--strip::after, .rwy-cap .rwy-band--wide::after,
.rwy-cap .rwy-band--valley::after, .rwy-cap .rwy-band--flat::after {
  content: ""; grid-area: 1 / 1; z-index: 0;
  background-image: linear-gradient(0deg, var(--rwy-bg) 0%, var(--rwy-night) 46%, var(--rwy-night-0) 80%);
}
.rwy-cap-words, .rwy-cap-words--low, .rwy-cap-words--foot, .rwy-cap-words--high { align-self: end; padding: 0 var(--rwy-gap) 20px; max-width: 40rem; }
.rwy-cap-words h1 { margin-top: 0.5rem; font-size: clamp(2.3rem, 10.6vw, 3.2rem); font-weight: 900; line-height: 0.86; max-width: 9em; }
.rwy-cap-words .rwy-tag { color: var(--rwy-ink); }
.rwy-cap-lede { margin-top: 14px; font-size: 1.08rem; max-width: 30em; color: var(--rwy-ink); }

.rwy-band--turret > img { object-position: 68% 50%; }
.rwy-band--strip > img { object-position: 50% 70%; }
.rwy-band--wide > img { object-position: 100% 50%; }
.rwy-band--valley > img { object-position: 68% 50%; }

/* phones: a portrait frame shows the picture's full height, so the subject's height in the picture
   is fixed. Where the subject sits LOW (the palace on its horizon, slates stacked on the scaffold,
   sharp nails under a soft top), the words take the quiet top and the subject stays in view; where
   it sits high (survey, junctions) the words stay at the foot. :where() keeps this at the same weight
   as the tablet rules below, so from 820px they win again. */
:where(.rwy-band--valley, .rwy-band--strip, .rwy-band--wide) > .rwy-cap-words { align-self: start; padding: 26px var(--rwy-gap) 0; }
.rwy-cap .rwy-band--valley::after, .rwy-cap .rwy-band--strip::after, .rwy-cap .rwy-band--wide::after {
  background-image:
    linear-gradient(180deg, var(--rwy-night) 0%, var(--rwy-night-mid) 40%, var(--rwy-night-0) 62%),
    linear-gradient(0deg, var(--rwy-bg) 0%, var(--rwy-night-0) 12%);
}

/* junctions page */
.rwy-joints { padding: 52px 0 70px; display: grid; gap: 34px; }
.rwy-joints-intro, .rwy-joints-coda, .rwy-joint { padding-inline: var(--rwy-gap); }
.rwy-joints-intro { max-width: 40rem; }
.rwy-joints-h { margin-bottom: 1rem; }
.rwy-joints-cols { display: grid; gap: 34px; }
.rwy-joint h3 { font-size: clamp(1.9rem, 6.6vw, 2.7rem); font-weight: 850; margin-bottom: 14px; }
.rwy-joint dl { display: grid; gap: 10px; }
.rwy-joint dl > div { padding: 12px 14px; border-radius: 8px; background-color: var(--rwy-panel); transition: background-color 0.18s ease, transform 0.18s ease; }
.rwy-joint dl > div:hover { background-color: var(--rwy-tile); transform: translateY(-2px); }
.rwy-joint dt { font: 800 1rem/1.1 var(--rwy-display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--rwy-copper); margin-bottom: 4px; }
.rwy-joint dd { color: var(--rwy-ink-dim); }
.rwy-joint dl > div:last-child { background-color: var(--rwy-tile-up); }
.rwy-joint dl > div:last-child dt { color: var(--rwy-rain); }
.rwy-joint dl > div:last-child dd { color: var(--rwy-ink); }
.rwy-band--slim > img { height: 54vw; }
.rwy-joints-coda { max-width: 44rem; color: var(--rwy-ink-dim); }

/* the job page: stages laid like courses, each overlapping the last */
.rwy-courses { padding: 52px var(--rwy-gap) 30px; }
.rwy-courses-intro { max-width: 40rem; margin-bottom: 34px; }
.rwy-courses-intro h2 { margin-bottom: 1rem; }
.rwy-laid { display: grid; gap: 12px; counter-reset: rwy-stage; }
.rwy-laid > li {
  counter-increment: rwy-stage; position: relative;
  padding: 18px 18px 18px 74px; border-radius: 10px;
  background-color: var(--rwy-panel);
  box-shadow: 0 10px 0 -4px var(--rwy-well);
}
.rwy-laid > li::before {
  content: counter(rwy-stage); position: absolute; left: 16px; top: 14px;
  font: 900 2.7rem/0.9 var(--rwy-display); color: var(--rwy-copper);
}
.rwy-laid h3 { margin-bottom: 6px; }
.rwy-laid p { color: var(--rwy-ink-dim); }
.rwy-permit-list { display: grid; gap: 10px; margin-top: 12px; }
.rwy-permit-list li { padding: 10px 12px; border-radius: 8px; background-color: var(--rwy-well); color: var(--rwy-ink-dim); }
.rwy-permit-list b { color: var(--rwy-ink); font: 800 1.15rem/1.2 var(--rwy-display); letter-spacing: 0.01em; }
.rwy-job-coda { padding: 20px var(--rwy-gap) 76px; max-width: 46rem; }
.rwy-job-coda h2 { margin-bottom: 1rem; }

/* tools page */
.rwy-reckon { padding: 48px var(--rwy-gap) 76px; display: grid; gap: 34px; }
.rwy-reckon-intro { max-width: 40rem; }
.rwy-reckon-intro h2 { margin-bottom: 1rem; }
.rwy-reckon-note { max-width: 44rem; color: var(--rwy-ink-dim); }

/* survey page */
.rwy-ask { padding: 48px var(--rwy-gap) 40px; display: grid; gap: 40px; }
.rwy-ask-side h2 { font-size: clamp(1.8rem, 6vw, 2.4rem); margin-bottom: 14px; }
.rwy-ask-side h2 + * { margin-bottom: 0; }
.rwy-ask-side > ul + h2 { margin-top: 34px; }
.rwy-ready { display: grid; gap: 12px; }
.rwy-ready li { padding-left: 24px; position: relative; color: var(--rwy-ink-dim); }
.rwy-ready li::before {
  content: ""; position: absolute; left: 2px; top: 0.5em; width: 10px; height: 14px;
  background-color: var(--rwy-rain); border-radius: 50% 50% 50% 50% / 62% 62% 38% 38%; transform: rotate(180deg);
}
.rwy-ready b { color: var(--rwy-ink); }
.rwy-form { padding: 24px 18px; border-radius: 14px; background-color: var(--rwy-panel); display: grid; gap: 22px; box-shadow: inset 0 4px 0 var(--rwy-rain); }
.rwy-form-h { font-size: clamp(1.8rem, 6vw, 2.4rem); font-weight: 850; }
.rwy-set { display: grid; gap: 12px; }
.rwy-set legend { font: 800 1.25rem/1.1 var(--rwy-display); letter-spacing: 0.04em; color: var(--rwy-copper); margin-bottom: 10px; padding: 0; }
.rwy-hint { color: var(--rwy-muted); font-size: 0.92rem; }
.rwy-choices { display: flex; flex-wrap: wrap; gap: 10px; }
.rwy-choice {
  display: inline-flex; align-items: center; gap: 10px; min-height: 48px;
  padding: 8px 14px 8px 10px; border-radius: 999px;
  background-color: var(--rwy-tile); cursor: pointer;
  font: 700 1.1rem/1.15 var(--rwy-display); color: var(--rwy-ink);
  transition: background-color 0.15s ease, box-shadow 0.15s ease;
}
.rwy-choice:hover { background-color: var(--rwy-tile-up); }
.rwy-choice:has(input:checked) { background-color: var(--rwy-rain-deep); box-shadow: inset 0 0 0 2px var(--rwy-rain); }
.rwy-choice input, .rwy-consent input {
  -webkit-appearance: none; appearance: none; flex: none; margin: 0;
  width: 24px; height: 24px; border-radius: 50%;
  background-color: var(--rwy-well); border: 2px solid var(--rwy-muted);
  transition: background-color 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.rwy-choice--box input, .rwy-consent input { border-radius: 6px; }
.rwy-choice input:checked, .rwy-consent input:checked {
  background-color: var(--rwy-rain); border-color: var(--rwy-ink); box-shadow: inset 0 0 0 4px var(--rwy-well);
}
.rwy-choice input:focus-visible, .rwy-consent input:focus-visible { outline: 3px solid var(--rwy-focus); outline-offset: 2px; }
.rwy-consent { display: flex; gap: 12px; align-items: flex-start; color: var(--rwy-ink-dim); }
.rwy-consent input { margin-top: 2px; }
.rwy-trap { position: absolute; left: -9999px; width: 2px; height: 2px; border: 2px solid var(--rwy-edge); background-color: var(--rwy-well); }
.rwy-form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px; }
.rwy-form-state { color: var(--rwy-ink); max-width: 30em; }
.rwy-form-state:empty { display: none; }
.rwy-form[data-state="sent"] .rwy-form-state { padding: 12px 14px; border-radius: 8px; background-color: var(--rwy-rain-deep); }
.rwy-form[data-state="error"] .rwy-form-state { color: var(--rwy-copper); }
.rwy-kept { padding: 10px var(--rwy-gap) 80px; max-width: 48rem; }
.rwy-kept h2 { font-size: clamp(1.6rem, 5.4vw, 2.2rem); margin-bottom: 12px; }
.rwy-kept p { color: var(--rwy-ink-dim); }

/* survey half-days: one tile per half-day, a day per row on phones */
.rwy-optional { font-style: normal; font-weight: 650; color: var(--rwy-muted); letter-spacing: 0.02em; margin-left: 6px; }
.rwy-side-link { margin-top: 24px; font: 800 1.25rem/1.2 var(--rwy-display); }
.rwy-weeks { display: grid; gap: 20px; }
.rwy-week-h { margin-bottom: 8px; font: 800 1rem/1.2 var(--rwy-display); letter-spacing: 0.1em; text-transform: uppercase; color: var(--rwy-muted); }
.rwy-days { display: grid; gap: 8px; }
.rwy-day { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 6px; }
.rwy-day-name { grid-column: 1 / -1; font: 650 1rem/1.1 var(--rwy-display); color: var(--rwy-ink-dim); }
.rwy-day-name b { font-weight: 850; font-size: 1.15rem; color: var(--rwy-ink); margin-right: 4px; }
.rwy-day--off { grid-template-columns: auto minmax(0, 1fr); align-items: baseline; gap: 10px; }
.rwy-day--off .rwy-day-name { grid-column: auto; }
.rwy-day--off .rwy-day-name b { color: var(--rwy-muted); }
.rwy-day-why { color: var(--rwy-muted); font-size: 0.92rem; }
.rwy-day--gone { display: none; }
.rwy-half {
  position: relative; display: flex; align-items: center; gap: 10px; min-height: 54px;
  padding: 8px 10px; border-radius: 8px; background-color: var(--rwy-tile); cursor: pointer;
  transition: background-color 0.15s ease, box-shadow 0.15s ease;
}
.rwy-half:hover { background-color: var(--rwy-tile-up); }
.rwy-half input {
  -webkit-appearance: none; appearance: none; flex: none; margin: 0; width: 22px; height: 22px; border-radius: 50%;
  background-color: var(--rwy-well); border: 2px solid var(--rwy-muted); cursor: inherit;
}
.rwy-half input:checked { background-color: var(--rwy-rain); border-color: var(--rwy-ink); box-shadow: inset 0 0 0 4px var(--rwy-well); }
.rwy-half input:focus-visible { outline: 3px solid var(--rwy-focus); outline-offset: 2px; }
.rwy-half:has(input:checked) { background-color: var(--rwy-rain-deep); box-shadow: inset 0 0 0 2px var(--rwy-rain); }
.rwy-half span { display: grid; gap: 2px; min-width: 0; }
.rwy-half b { font: 800 1.08rem/1.05 var(--rwy-display); color: var(--rwy-ink); }
.rwy-half i { font-style: normal; font-size: 0.86rem; line-height: 1.15; color: var(--rwy-ink-dim); }
.rwy-half--taken { cursor: not-allowed; background-color: var(--rwy-well); }
.rwy-half--taken:hover { background-color: var(--rwy-well); }
.rwy-half--taken b, .rwy-half--taken i { color: var(--rwy-muted); }
.rwy-half--taken input { border-style: dashed; }
.rwy-half--own { cursor: default; background-color: var(--rwy-copper-soft); }
.rwy-half--own:hover { background-color: var(--rwy-copper-soft); }
.rwy-half--own i { color: var(--rwy-copper); }
.rwy-choices--inline { align-items: center; }
.rwy-choices-q { flex: 1 0 100%; font: 700 1.08rem/1.15 var(--rwy-display); color: var(--rwy-ink); }
.rwy-snaps { display: flex; flex-wrap: wrap; gap: 10px; }
.rwy-snaps:empty { display: none; }
.rwy-snaps li { display: grid; gap: 6px; width: 132px; padding: 8px; border-radius: 8px; background-color: var(--rwy-well); }
.rwy-snaps img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 4px; }
.rwy-snaps span { font-size: 0.85rem; color: var(--rwy-muted); }
.rwy-snaps--kept li { width: min(100%, 240px); }
.rwy-snap-drop {
  min-height: 44px; border: 0; border-radius: 6px; background-color: var(--rwy-tile); color: var(--rwy-ink);
  font: 750 1rem/1 var(--rwy-display); cursor: pointer; transition: background-color 0.15s ease;
}
.rwy-snap-drop:hover { background-color: var(--rwy-tile-up); }
.rwy-field input[type="file"] { padding: 10px; }

/* booked and manage pages */
.rwy-held, .rwy-mine { padding: 48px var(--rwy-gap) 34px; max-width: 54rem; }
.rwy-mine { padding-bottom: 84px; }
.rwy-held h1, .rwy-mine h1 { margin: 0.6rem 0 1.4rem; font-size: clamp(2.6rem, 11vw, 5.4rem); font-weight: 900; line-height: 0.86; }
.rwy-held-ref { display: grid; gap: 2px; max-width: 36rem; padding: 22px; border-radius: 14px; background-color: var(--rwy-panel); box-shadow: inset 0 4px 0 var(--rwy-rain); }
.rwy-held-label { font: 800 0.95rem/1.1 var(--rwy-display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--rwy-muted); }
.rwy-held-code { margin-bottom: 14px; font: 900 clamp(2rem, 8vw, 3rem)/1 var(--rwy-display); letter-spacing: 0.04em; color: var(--rwy-rain); overflow-wrap: anywhere; }
.rwy-held-when { margin-bottom: 12px; font: 800 1.45rem/1.15 var(--rwy-display); color: var(--rwy-ink); }
.rwy-held-next { padding: 10px var(--rwy-gap) 84px; max-width: 54rem; }
.rwy-held-next h2 { margin-bottom: 1rem; }
.rwy-held-steps { display: grid; gap: 12px; counter-reset: rwy-held; }
.rwy-held-steps li { position: relative; counter-increment: rwy-held; padding: 14px 16px 14px 58px; border-radius: 10px; background-color: var(--rwy-panel); color: var(--rwy-ink-dim); }
.rwy-held-steps li::before { content: counter(rwy-held); position: absolute; left: 18px; top: 10px; font: 900 2.2rem/1 var(--rwy-display); color: var(--rwy-rain); }
.rwy-held-steps b { color: var(--rwy-ink); }
.rwy-held-mail { margin-top: 18px; padding: 14px 16px; border-radius: 10px; background-color: var(--rwy-tile); box-shadow: inset 4px 0 0 var(--rwy-copper); color: var(--rwy-ink-dim); }
.rwy-mine-msg { max-width: 46rem; margin-bottom: 20px; padding: 14px 16px; border-radius: 10px; background-color: var(--rwy-tile); box-shadow: inset 4px 0 0 var(--rwy-rain); color: var(--rwy-ink); }
.rwy-mine-msg--warn { box-shadow: inset 4px 0 0 var(--rwy-copper); }
.rwy-mine-msg--done { background-color: var(--rwy-rain-deep); }
.rwy-mine-facts { display: grid; gap: 8px; margin-bottom: 26px; }
.rwy-mine-facts > div { display: grid; gap: 2px; padding: 10px 14px; border-radius: 8px; background-color: var(--rwy-panel); }
.rwy-mine-facts dt { font: 800 0.95rem/1.15 var(--rwy-display); letter-spacing: 0.1em; text-transform: uppercase; color: var(--rwy-muted); }
.rwy-mine-facts dd { color: var(--rwy-ink); overflow-wrap: anywhere; }
.rwy-mine-h { margin: 32px 0 12px; font-size: clamp(1.7rem, 5.6vw, 2.4rem); }
.rwy-mine-list { display: grid; gap: 8px; padding-left: 1.3em; list-style: disc; color: var(--rwy-ink-dim); }
.rwy-mine-list b { color: var(--rwy-ink); }
.rwy-form--look, .rwy-form--move, .rwy-form--cancel { max-width: 48rem; }
.rwy-mine .rwy-hint + .rwy-hint, .rwy-mine > p + p { margin-top: 12px; }

/* the index: next free half-days */
.rwy-next { max-width: 40rem; margin-top: 16px; }
.rwy-next-rule { color: var(--rwy-ink-dim); }
.rwy-next-show { margin-top: 12px; }
.rwy-next-count { margin-top: 10px; font: 700 1.15rem/1.3 var(--rwy-display); color: var(--rwy-ink); }
.rwy-next-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.rwy-next-list a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 8px 14px; border-radius: 999px;
  background-color: var(--rwy-tile); color: var(--rwy-ink); text-decoration: none; font: 700 1rem/1.15 var(--rwy-display);
  transition: background-color 0.15s ease;
}
.rwy-next-list a:hover { background-color: var(--rwy-tile-up); color: var(--rwy-ink); }
.rwy-drain-booked { margin-top: 12px; color: var(--rwy-ink-dim); }

/* company page */
.rwy-patch { padding: 52px var(--rwy-gap) 30px; display: grid; gap: 30px; }
.rwy-patch-text { max-width: 44rem; }
.rwy-patch-text h2 { margin-bottom: 1rem; }
.rwy-districts { display: flex; flex-wrap: wrap; gap: 10px; align-content: start; }
.rwy-districts li { padding: 10px 14px; border-radius: 8px; background-color: var(--rwy-panel); color: var(--rwy-ink-dim); font-size: 0.98rem; }
.rwy-districts b { font: 900 1.45rem/1 var(--rwy-display); color: var(--rwy-rain); margin-right: 4px; }
.rwy-name { margin: 20px var(--rwy-gap); padding: 26px 22px; border-radius: 14px; background-color: var(--rwy-tile); box-shadow: inset 6px 0 0 var(--rwy-copper); max-width: 52rem; }
.rwy-name h2 { margin-bottom: 0.8rem; }
.rwy-rules { padding: 40px var(--rwy-gap) 20px; }
.rwy-rules h2 { margin-bottom: 1.4rem; }
.rwy-rules-grid { display: grid; gap: 12px; }
.rwy-rules-grid p { margin: 0; padding: 14px 16px; border-radius: 8px; background-color: var(--rwy-panel); color: var(--rwy-ink-dim); }
.rwy-rules-grid b { display: block; color: var(--rwy-ink); font: 850 1.3rem/1.05 var(--rwy-display); margin-bottom: 4px; }
.rwy-reach { padding: 30px var(--rwy-gap) 80px; max-width: 46rem; }
.rwy-reach h2 { margin-bottom: 1rem; }

/* 404 */
.rwy-lost { padding: 90px var(--rwy-gap) 120px; max-width: 44rem; }
.rwy-lost h1 { font-size: clamp(2.6rem, 11vw, 5.6rem); font-weight: 900; line-height: 0.86; margin-bottom: 1.2rem; }
.rwy-lost-h { margin: 2.2rem 0 0.8rem; font-size: clamp(1.9rem, 6vw, 2.8rem); }

/* ------------------------------------------------------------------ the drain (footer, every page) */
.rwy-drain {
  position: relative;
  background-color: var(--rwy-panel);
  box-shadow: inset 0 6px 0 var(--rwy-iron);
  padding: 46px var(--rwy-gap) 54px;
}
.rwy-drain-in { display: grid; gap: 30px; max-width: 74rem; }
.rwy-drain-lock { display: grid; gap: 18px; justify-items: start; }
.rwy-drain-mark { width: min(260px, 70vw); height: auto; }
.rwy-drain-word { width: min(420px, 86vw); height: auto; }
.rwy-drain-lede { color: var(--rwy-ink-dim); max-width: 32em; }
.rwy-drain-mail { margin-top: 14px; font: 800 1.45rem/1.2 var(--rwy-display); }
.rwy-drain-note { margin-top: 14px; color: var(--rwy-muted); font-size: 0.9rem; max-width: 38em; }
.rwy-reg { display: grid; gap: 10px; }
.rwy-reg > div { display: grid; gap: 2px; padding: 10px 12px; border-radius: 8px; background-color: var(--rwy-well); }
.rwy-reg dt { font: 800 0.95rem/1.1 var(--rwy-display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--rwy-muted); }
.rwy-reg dd { color: var(--rwy-ink); font-size: 0.98rem; overflow-wrap: anywhere; }

/* ------------------------------------------------------------------ tablet: the pipe becomes the rail */
@media (min-width: 820px) {

  .rwy-day { grid-template-columns: 6.6rem minmax(0, 1fr) minmax(0, 1fr); align-items: center; }
  .rwy-day-name { grid-column: auto; }
  .rwy-day-name b { display: block; margin-right: 0; }
  .rwy-day--off { grid-template-columns: 6.6rem minmax(0, 1fr); }
  .rwy-mine-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* the survey's words sit on the quiet membrane: a wider block is a shorter one, kept off the bright brick */
  .rwy-band--flat .rwy-cap-words--foot { max-width: min(58rem, 70%); }
  .rwy-held-ref { padding: 26px 28px; }
  :root { --rwy-rail: 184px; --rwy-gap: 40px; --rwy-tread: clamp(0px, 3.4vw, 64px); --rwy-band-h: 44vw; }
  body { padding-right: var(--rwy-rail); }

  .rwy-pipe {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 30;
    width: var(--rwy-rail); padding: 0;
    grid-template-columns: minmax(0, 1fr) 46px;
    grid-template-rows: auto minmax(0, 1fr);
    grid-template-areas: "hopper hopper" "run barrel";
    gap: 0;
    box-shadow: inset 4px 0 0 var(--rwy-iron);
  }
  .rwy-place { display: none; }
  .rwy-hopper {
    grid-area: hopper; position: relative; align-items: center; gap: 0;
    margin: 0; padding: 22px 16px 26px 20px; border-radius: 0;
  }
  .rwy-hopper::before {
    content: ""; position: absolute; inset: 10px 10px 4px 14px; z-index: -1;
    background-color: var(--rwy-tile); transition: background-color 0.2s ease;
    clip-path: polygon(0 0, 100% 0, 84% 100%, 16% 100%);
  }
  .rwy-hopper-mark { width: 132px; }
  .rwy-hopper-stack { display: none; }
  .rwy-hopper:hover::before { background-color: var(--rwy-tile-up); }

  .rwy-barrel {
    grid-area: barrel; display: block; position: relative; overflow: clip; align-self: stretch;
    margin: 0 10px 0 0;
    background-image: linear-gradient(90deg, var(--rwy-tile) 0%, var(--rwy-iron) 14%, var(--rwy-iron) 70%, var(--rwy-iron-hi) 86%, var(--rwy-iron) 100%);
    border-radius: 2px;
  }
  .rwy-barrel-word { width: 20px; height: auto; max-height: calc(100% - 40px); margin: 22px 0 0 6px; }

  .rwy-run { grid-area: run; margin: 0; padding: 16px 14px 16px 14px; overflow-y: auto; scrollbar-width: none; }
  .rwy-run ul { display: grid; gap: 12px; overflow: visible; padding: 0; -webkit-mask-image: none; mask-image: none; }
  .rwy-run a {
    min-height: var(--rwy-len, 3.4em);
    white-space: normal; padding: 12px 14px 12px 14px;
    border-radius: 6px 0 0 6px; border-top: 0; border-left: 5px solid var(--rwy-iron-hi);
    font-size: 1.22rem; line-height: 1;
  }
  .rwy-run a::after {
    content: ""; position: absolute; right: -14px; top: 50%; width: 14px; height: 12px;
    margin-top: -6px; background-color: var(--rwy-iron-hi); border-radius: 0 2px 2px 0;
  }
  .rwy-run a:hover { transform: translateX(-4px); border-left-color: var(--rwy-rain); }
  .rwy-run a[aria-current="page"] { border-left-color: var(--rwy-ink); }
  .rwy-run a[aria-current="page"]::after { background-color: var(--rwy-rain); }
  .rwy-len-rain { --rwy-len: 5.6em; }
  .rwy-len-junctions { --rwy-len: 3.9em; }
  .rwy-len-job { --rwy-len: 4.6em; }
  .rwy-len-gauge { --rwy-len: 4.1em; }
  .rwy-len-survey { --rwy-len: 3.6em; }
  .rwy-len-company { --rwy-len: 3.2em; }

  .rwy-sky-art { height: clamp(560px, 76vh, 820px); }
  .rwy-sky-art img { object-position: 88% 50%; }
  .rwy-sky-shade {
    background-image:
      linear-gradient(90deg, var(--rwy-night) 0%, var(--rwy-night-mid) 36%, var(--rwy-night-low) 52%, var(--rwy-night-0) 70%),
      linear-gradient(180deg, var(--rwy-night-low) 0%, var(--rwy-night-0) 62%),
      linear-gradient(0deg, var(--rwy-bg) 0%, var(--rwy-night-0) 16%);
  }
  .rwy-sky-title { padding: 64px var(--rwy-gap) 0 calc(var(--rwy-gap) + 48px); }
  .rwy-sky h1 { font-size: clamp(5rem, 9.2vw, 9.2rem); }
  .rwy-lede { font-size: 1.22rem; max-width: 31em; }
  .rwy-first { left: calc(var(--rwy-gap) + 6px); top: 62px; }
  .rwy-first-line { left: calc(var(--rwy-gap) + 15px); top: 106px; height: calc(100% - 106px); }

  .rwy-ridge { padding: 96px var(--rwy-gap) 64px calc(var(--rwy-gap) + 48px); }

  .rwy-band--letter { --rwy-band-h: clamp(300px, 30vw, 460px); }
  .rwy-band-say { padding: 0 var(--rwy-gap) 34px calc(var(--rwy-gap) + 48px); }
  .rwy-band--letter .rwy-band-say { padding-top: 40px; }
  .rwy-band--storm { --rwy-band-h: clamp(460px, 52vw, 760px); }
  .rwy-band--storm > img { object-position: 60% 50%; }
  .rwy-band-head { padding: 60px var(--rwy-gap) 0 calc(var(--rwy-gap) + var(--rwy-tread)); max-width: min(34rem, 58%); }
  .rwy-band--brick { --rwy-band-h: clamp(440px, 46vw, 700px); }
  .rwy-band--brick > img { height: var(--rwy-band-h); }
  .rwy-band--dusk { --rwy-band-h: clamp(420px, 42vw, 640px); }
  .rwy-band--dusk > img { object-position: 60% 50%; }
  .rwy-band-say--sky { padding: 56px var(--rwy-gap) 0 calc(var(--rwy-gap) + 3 * var(--rwy-tread)); max-width: min(15em, 62%); font-size: clamp(1.5rem, 3.4vw, 3.2rem); }

  .rwy-junction { padding-bottom: 96px; }
  .rwy-junction > .rwy-tread { padding-top: 56px; }

  .rwy-tool { padding: 28px 28px 30px; }
  .rwy-pair { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .rwy-cap .rwy-band > img { height: clamp(420px, 38vw, 620px); }
  .rwy-band--wide > img { object-position: 70% 50%; }
  .rwy-band--valley > img { object-position: 50% 50%; }
  .rwy-cap .rwy-band::after {
    background-image: linear-gradient(180deg, var(--rwy-night-mid) 0%, var(--rwy-night-0) 55%);
  }
  .rwy-cap .rwy-band--valley::after, .rwy-cap .rwy-band--flat::after {
    background-image: linear-gradient(0deg, var(--rwy-night) 0%, var(--rwy-night) 30%, var(--rwy-night-mid) 56%, var(--rwy-night-0) 84%);
  }
  .rwy-cap .rwy-band--strip::after, .rwy-cap .rwy-band--wide::after {
    background-image:
      linear-gradient(90deg, var(--rwy-night) 0%, var(--rwy-night) 22%, var(--rwy-night-mid) 44%, var(--rwy-night-low) 58%, var(--rwy-night-0) 76%),
      linear-gradient(180deg, var(--rwy-night-mid) 0%, var(--rwy-night-0) 55%);
  }
  .rwy-cap-words, .rwy-cap-words--high { align-self: start; padding: 64px var(--rwy-gap) 0; max-width: min(58rem, 56%); }
  .rwy-cap-words--low, .rwy-cap-words--foot { align-self: end; padding: 0 var(--rwy-gap) 48px; max-width: min(58rem, 56%); }
  .rwy-cap-words h1 { font-size: clamp(2.6rem, 6.4vw, 6.2rem); max-width: none; }
  .rwy-joint dl { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .rwy-form { padding: 32px 30px; }
  .rwy-rules-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rwy-rules-grid p:nth-child(4n + 2), .rwy-rules-grid p:nth-child(4n + 3) { background-color: var(--rwy-tile); }

  .rwy-drain { padding: 60px var(--rwy-gap) 70px; }
  .rwy-reg { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rwy-reg > div:nth-child(3), .rwy-reg > div:last-child { grid-column: 1 / -1; }
  .rwy-joint dl { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1180px) {

  :root { --rwy-rail: 196px; --rwy-gap: 56px; }
  .rwy-band--flat .rwy-cap-words--foot { max-width: min(58rem, 56%); }
  body { font-size: 1.0625rem; }
  .rwy-joint dl { gap: 12px; }

  /* side by side only where the column beside the rail can hold two things */
  .rwy-sky-more {
    display: grid; grid-template-columns: minmax(0, 38rem) minmax(0, 1fr); align-items: end; gap: 20px 48px;
    padding: 30px var(--rwy-gap) 0 calc(var(--rwy-gap) + 48px);
  }
  .rwy-sky-more .rwy-acts { margin-top: 0; }
  .rwy-ridge-in { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 22px 56px; align-items: start; }
  .rwy-ridge-tag { grid-column: 1 / -1; }
  .rwy-ridge-big { grid-column: 1; grid-row: 2 / span 2; }
  .rwy-ridge-mid { grid-column: 2; grid-row: 2; padding-top: 10px; }
  .rwy-ridge-small { grid-column: 2; grid-row: 3; }
  .rwy-band--brick::after {
    content: ""; grid-area: 1 / 1; z-index: 0;
    background-image: linear-gradient(90deg, var(--rwy-night) 0%, var(--rwy-night-mid) 44%, var(--rwy-night-0) 66%);
  }
  .rwy-band-over { grid-area: 1 / 1 !important; align-self: center; padding: 40px var(--rwy-gap) 40px calc(var(--rwy-gap) + 2 * var(--rwy-tread)); max-width: min(40rem, 54%); }
  .rwy-tread { display: grid; grid-template-columns: minmax(0, 30rem) minmax(0, 1fr); gap: clamp(28px, 3.4vw, 56px); align-items: center; }
  .rwy-fig { margin-top: 0; }
  .rwy-tread--turned { grid-template-columns: minmax(0, 1.25fr) minmax(0, 28rem); }
  .rwy-tread--low { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: start; }
  .rwy-fig--lifted { margin-top: -120px; position: relative; z-index: 2; padding: 18px; border-radius: 12px; background-color: var(--rwy-panel); box-shadow: 0 22px 50px var(--rwy-night-mid); }
  .rwy-tread--instrument { grid-template-columns: minmax(0, 1fr) minmax(0, 27rem); align-items: start; }
  .rwy-fig--wide { margin-top: 36px; padding-inline: calc(var(--rwy-gap) + var(--rwy-step, 0) * var(--rwy-tread)) var(--rwy-gap); max-width: none; }
  .rwy-tread--annotated { grid-template-columns: minmax(0, 1.4fr) minmax(0, 22rem); }
  .rwy-tread--ground { grid-template-columns: minmax(0, 1fr); }
  .rwy-first-three { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: start; }
  .rwy-first-three li { grid-template-columns: 1fr; }
  .rwy-first-three li:nth-child(2) { margin-top: 28px; }
  .rwy-first-three li:nth-child(3) { margin-top: 56px; }
  .rwy-first-three li::before { grid-row: auto; margin-bottom: 4px; }
  .rwy-joint { display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); gap: 24px; align-items: start; }
  .rwy-joint:nth-of-type(2n) { padding-left: calc(var(--rwy-gap) + var(--rwy-tread)); }
  .rwy-joints-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; padding-inline: var(--rwy-gap); }
  .rwy-joints-cols .rwy-joint { display: block; padding: 0; }
  .rwy-joints-cols .rwy-joint dl { grid-template-columns: 1fr; }
  .rwy-joints-cols .rwy-joint:nth-child(2) { margin-top: 36px; }
  .rwy-joints-cols .rwy-joint:nth-child(3) { margin-top: 72px; }
  .rwy-laid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 18px; }
  .rwy-laid > li:nth-child(2n) { transform: translateY(26px); }
  .rwy-laid-wide { grid-column: 1 / -1; transform: none !important; }
  .rwy-permit-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rwy-ask { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); align-items: start; }
  .rwy-ask-side { position: sticky; top: 24px; }
  .rwy-patch { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: end; }
  .rwy-reckon-note--right { justify-self: end; }
  .rwy-tool-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
  .rwy-drain-in { grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 34px 56px; align-items: start; }
  .rwy-drain-lock { grid-column: 1; }
  .rwy-drain-say { grid-column: 1; }
  .rwy-reg { grid-column: 2; grid-row: 1 / span 2; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rwy-reg > div:nth-child(3), .rwy-reg > div:last-child { grid-column: 1 / -1; }
}

@media (min-width: 1400px) {
  /* five day-columns per week once the form column can hold "Afternoon" beside a visible dot */
  .rwy-days { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; }
  .rwy-day--gone { display: block; visibility: hidden; }
  .rwy-day, .rwy-day--off { grid-template-columns: minmax(0, 1fr); align-content: start; align-items: start; gap: 6px; }
  .rwy-half { display: grid; grid-template-columns: 16px minmax(0, 1fr); grid-template-areas: "dot name" "time time"; gap: 4px 6px; padding: 8px; }
  .rwy-half span { display: contents; }
  .rwy-half input { grid-area: dot; width: 16px; height: 16px; }
  .rwy-half input:checked { box-shadow: inset 0 0 0 3px var(--rwy-well); }
  .rwy-half b { grid-area: name; font-size: 1rem; }
  .rwy-half i { grid-area: time; }
}

@media (min-width: 1500px) {
  :root { --rwy-gap: 72px; }
  .rwy-drain-mark { width: 300px; }
}

/* ------------------------------------------------------------------ motion: only for those who want it */
@keyframes rwy-draw { from { stroke-dashoffset: 1; } to { stroke-dashoffset: 0; } }
@keyframes rwy-swell { 0% { transform: scale(0.1); opacity: 0; } 55% { transform: scale(1.25); opacity: 1; } 100% { transform: scale(1); opacity: 0.88; } }
@keyframes rwy-fill { from { transform: scaleY(0.05); opacity: 0.2; } to { transform: scaleY(1); opacity: 0.62; } }
@keyframes rwy-light { from { opacity: 0.16; } to { opacity: 1; } }
@keyframes rwy-fall { 0% { transform: translateY(-46px) scale(0.6); opacity: 0; } 70% { opacity: 1; } 100% { transform: translateY(0) scale(1); opacity: 1; } }
@keyframes rwy-rise { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
@keyframes rwy-pour { 0% { transform: translateY(-100%); opacity: 0; } 25% { opacity: 1; } 100% { transform: translateY(100%); opacity: 0; } }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .rwy-first-drop { transform-box: fill-box; transform-origin: 50% 100%; animation: rwy-fall 0.9s cubic-bezier(.3, .8, .4, 1) 0.15s both; }
  .rwy-sky-title > *, .rwy-sky-more > * { animation: rwy-rise 0.8s cubic-bezier(.2, .7, .3, 1) both; }
  .rwy-sky-title > :nth-child(2) { animation-delay: 0.12s; }
  .rwy-sky-more > :nth-child(1) { animation-delay: 0.24s; }
  .rwy-sky-more > :nth-child(2) { animation-delay: 0.34s; }

  @supports (animation-timeline: view()) {
    /* the rain path: each junction drawing is its own view timeline */
    .rwy-fig { view-timeline-name: --rwy-fig; view-timeline-axis: block; }
    .rwy-fig .rwy-d-water { stroke-dasharray: 1 1; animation: rwy-draw linear both; animation-timeline: --rwy-fig; }
    .rwy-fig .rwy-d-in { animation-range: cover 6% cover 40%; }
    .rwy-fig .rwy-d-pool { animation: rwy-swell linear both; animation-timeline: --rwy-fig; animation-range: cover 34% cover 48%; }
    .rwy-fig .rwy-d-pool--fill { animation-name: rwy-fill; }
    .rwy-fig .rwy-d-fail { animation: rwy-light linear both; animation-timeline: --rwy-fig; animation-range: cover 38% cover 50%; }
    .rwy-fig .rwy-d-out { animation-range: cover 50% cover 78%; }
    .rwy-fig .rwy-d-live { stroke-dasharray: none; animation: none; }

    /* the first drop's run, drawn as the sky scrolls away */
    .rwy-sky { view-timeline-name: --rwy-sky; view-timeline-axis: block; }
    .rwy-first-run { stroke-dasharray: 1 1; animation: rwy-draw linear both; animation-timeline: --rwy-sky; animation-range: exit -40% exit 60%; }

    /* copy blocks rise into place as they arrive; type set over art never fades */
    .rwy-copy, .rwy-ridge-in, .rwy-joint, .rwy-laid > li, .rwy-rules-grid p, .rwy-first-three li {
      animation: rwy-rise linear both; animation-timeline: view(); animation-range: entry 0% entry 55%;
    }

    /* the downpipe takes the water when the outfall comes into view */
    /* only the index has an outfall to pour from; elsewhere the pipe stays dry. The stream runs
       beside the letters of the name, never through them. */
    .rwy-at-rain { timeline-scope: --rwy-outfall; }
    .rwy-junction--pipe { view-timeline-name: --rwy-outfall; view-timeline-axis: block; }
    .rwy-at-rain .rwy-barrel::after {
      content: ""; position: absolute; right: 3px; top: 0; width: 5px; height: 60%;
      border-radius: 3px; opacity: 0;
      background-image: linear-gradient(180deg, var(--rwy-rain-pale), var(--rwy-rain) 60%, var(--rwy-rain-pale));
      animation: rwy-pour linear both; animation-timeline: --rwy-outfall; animation-range: cover 35% cover 85%;
    }
  }
}