@font-face {
  font-family: "Barlow Condensed";
  src: url("fonts/barlow-condensed-900.woff2") format("woff2");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Source Sans 3";
  src: url("fonts/source-sans-3.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex-mono-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --wet-ink: #10232b;
  --ink-soft: #3e5158;
  --concrete: #dde2df;
  --concrete-dark: #c4ccc8;
  --enamel: #1261a0;
  --enamel-dark: #0a406e;
  --chlorine: #7de2d1;
  --oxide: #c65332;
  --oxide-dark: #8f351f;
  --chalk: #f5f7f2;
  --white: #fff;
  --line: rgba(16, 35, 43, .22);
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --body: "Source Sans 3", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --page: min(1180px, calc(100vw - 48px));
  --reading: 720px;
}

* { box-sizing: border-box; }

html {
  background: var(--concrete);
  color: var(--wet-ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

button,
input { font: inherit; }

button,
a { -webkit-tap-highlight-color: transparent; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--chlorine);
  outline-offset: 4px;
}

::selection {
  background: var(--chlorine);
  color: var(--wet-ink);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  background: var(--chalk);
  transform: translateY(-160%);
}

.skip-link:focus { transform: none; }

.utility-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 50%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  width: var(--page);
  height: 74px;
  border-bottom: 1px solid rgba(245, 247, 242, .28);
  color: var(--chalk);
  font: 600 11px/1 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.brand,
.language { text-decoration: none; }

.header-pipe {
  height: 6px;
  border: 1px solid rgba(245, 247, 242, .32);
  background: var(--enamel);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(520px, 1.1fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
  min-height: 100svh;
  padding: 112px max(24px, calc((100vw - 1180px) / 2)) 72px;
  background: var(--wet-ink);
  color: var(--chalk);
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--oxide);
  font: 600 12px/1.25 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}

.hero h1,
.act-heading h2,
.closing h2,
.method h2 {
  margin: 0;
  font-family: var(--display);
  font-weight: 900;
  line-height: .91;
  letter-spacing: -.025em;
  text-wrap: balance;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 700px;
  font-size: clamp(68px, 7.3vw, 124px);
}

.site-name {
  display: block;
  margin-bottom: 18px;
  color: var(--chlorine);
  font: 600 14px/1.1 var(--mono);
  letter-spacing: .08em;
  text-transform: none;
}

.hero-deck {
  max-width: 580px;
  margin: 30px 0 12px;
  color: var(--chlorine);
  font-size: clamp(24px, 2.2vw, 36px);
  font-weight: 650;
  line-height: 1.08;
}

.hero-body {
  max-width: 650px;
  margin: 0;
  color: rgba(245, 247, 242, .78);
  font-size: 17px;
}

.pipe-instrument {
  position: relative;
  padding: 30px 0 0;
}

.pipe-label {
  display: flex;
  justify-content: space-between;
  width: calc(100% - 54px);
  margin: 0 auto 9px;
  color: rgba(245, 247, 242, .66);
  font: 600 10px/1 var(--mono);
  letter-spacing: .1em;
}

.pipe-label strong { color: var(--chalk); }

.pipe-shell {
  position: relative;
  padding: 36px;
  border: 12px solid #22363d;
  border-radius: 32px;
  background: #07191f;
  box-shadow: inset 0 0 0 2px rgba(245, 247, 242, .1), 0 18px 50px rgba(0, 0, 0, .28);
}

.pipe-shell::before,
.pipe-shell::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 50%;
  width: 58px;
  height: 58%;
  border: 8px solid #22363d;
  background: #07191f;
  transform: translateY(-50%);
}

.pipe-shell::before { right: calc(100% + 8px); border-right: 0; }
.pipe-shell::after { left: calc(100% + 8px); border-left: 0; }

.pipe-bolts i {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--concrete-dark);
  box-shadow: inset 0 0 0 2px #748086;
}

.pipe-bolts i:nth-child(1) { top: 10px; left: 12px; }
.pipe-bolts i:nth-child(2) { top: 10px; right: 12px; }
.pipe-bolts i:nth-child(3) { bottom: 10px; left: 12px; }
.pipe-bolts i:nth-child(4) { right: 12px; bottom: 10px; }

.litre-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: clamp(4px, .55vw, 8px);
  aspect-ratio: 1.26;
}

.litre {
  min-width: 0;
  border: 1px solid transparent;
  background: var(--chlorine);
  transition: opacity 300ms ease, transform 300ms ease;
}

.litre.physical {
  border-color: #df8267;
  background: var(--oxide);
}

.litre.other {
  border: 2px dashed var(--chlorine);
  background: var(--enamel);
}

.mode-all .litre.revenue { opacity: .18; }
.mode-physical .litre.revenue,
.mode-physical .litre.other { opacity: .12; }
.mode-physical .litre.physical { transform: scale(.88); }

.pipe-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  color: rgba(245, 247, 242, .52);
  font: 600 9px/1 var(--mono);
}

.valve-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: calc(100% - 56px);
  margin: 22px auto 0;
  border: 1px solid rgba(245, 247, 242, .24);
}

.valve-button {
  min-height: 48px;
  border: 0;
  background: transparent;
  color: rgba(245, 247, 242, .65);
  cursor: pointer;
  font: 600 11px/1.2 var(--mono);
}

.valve-button + .valve-button { border-left: 1px solid rgba(245, 247, 242, .24); }
.valve-button.is-active { background: var(--chlorine); color: var(--wet-ink); }

.composition-key {
  display: grid;
  gap: 7px;
  margin: 22px 28px 0;
}

.key {
  display: grid;
  grid-template-columns: 14px 70px 1fr;
  gap: 8px;
  align-items: center;
  color: rgba(245, 247, 242, .68);
  font-size: 13px;
}

.key i { width: 12px; height: 12px; }
.key b { color: var(--chalk); font-family: var(--mono); }
.key.revenue i { background: var(--chlorine); }
.key.physical i { background: var(--oxide); }
.key.other i { border: 2px dashed var(--chlorine); background: var(--enamel); }

.instrument-note,
.section-note {
  margin: 18px 28px 0;
  color: rgba(245, 247, 242, .5);
  font: 600 10px/1.5 var(--mono);
}

.service-main {
  position: relative;
  height: 92px;
  background: var(--concrete);
}

.service-main span {
  position: absolute;
  top: 0;
  left: 50%;
  width: 62px;
  height: 100%;
  border-right: 10px solid #22363d;
  border-left: 10px solid #22363d;
  background: var(--enamel);
  transform: translateX(-50%);
}

.service-main i {
  position: absolute;
  top: 30px;
  left: calc(50% + 42px);
  font: 600 9px/1 var(--mono);
  font-style: normal;
}

.act { padding: clamp(90px, 11vw, 160px) max(24px, calc((100vw - 1180px) / 2)); }

.act-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
  column-gap: clamp(40px, 8vw, 120px);
  align-items: end;
}

.act-heading .eyebrow { grid-column: 1 / -1; }

.act-heading h2,
.closing h2,
.method h2 {
  font-size: clamp(54px, 7vw, 100px);
}

.act-heading > p:last-child {
  max-width: 560px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 20px;
  line-height: 1.42;
}

.connection-board {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 78px;
}

.connection-line {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line);
  background: rgba(245, 247, 242, .45);
}

.connection-line header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
}

.connection-line h3 {
  margin: 0;
  font: 900 clamp(36px, 4vw, 58px)/1 var(--display);
  text-transform: uppercase;
}

.connection-line header strong { color: var(--oxide); font: 600 18px/1 var(--mono); }
.connection-line header span { grid-column: 2; color: var(--ink-soft); font-size: 12px; }

.connection-visual {
  display: grid;
  grid-template-columns: 34px 1fr 38px;
  align-items: center;
  margin: 34px 0 20px;
}

.main-node,
.home-node {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 2px solid var(--wet-ink);
  background: var(--enamel);
  color: var(--chalk);
  font: 600 12px/1 var(--mono);
}

.home-node { border: 0; background: transparent; color: var(--wet-ink); font-size: 34px; }
.connection-visual svg { width: 100%; overflow: visible; }
.rail { stroke: var(--concrete-dark); stroke-width: 2; }
.access-stroke { stroke: var(--enamel); stroke-width: 3; }
.connected-stroke { stroke: var(--chlorine); stroke-width: 1.1; }
.access-dot { fill: var(--enamel); }
.connected-dot { fill: var(--wet-ink); stroke: var(--chlorine); stroke-width: 1; }

.connection-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.connection-values span {
  display: flex;
  flex-direction: column;
  color: var(--ink-soft);
  font-size: 13px;
}

.connection-values b { color: var(--wet-ink); font: 600 24px/1.2 var(--mono); }
.connection-values .people-gap { grid-column: 1 / -1; padding-top: 12px; border-top: 1px solid var(--line); }
.connection-values .people-gap b { color: var(--oxide); }

.total-gap {
  position: absolute;
  top: calc(100% + 20px);
  left: 50%;
  display: grid;
  grid-template-columns: auto auto;
  min-width: 220px;
  padding: 14px 18px;
  border: 2px solid var(--wet-ink);
  background: var(--concrete);
  text-align: center;
  transform: translateX(-50%);
}

.total-gap span { grid-column: 1 / -1; font: 600 10px/1 var(--mono); text-transform: uppercase; }
.total-gap strong { color: var(--oxide); font: 900 42px/1 var(--display); }
.total-gap b { align-self: end; padding-bottom: 5px; font-size: 12px; }

.access-act .section-note {
  max-width: 660px;
  margin: 122px auto 0;
  color: var(--ink-soft);
  text-align: center;
}

.operator-act { background: var(--wet-ink); color: var(--chalk); }
.act-heading.inverse > p:last-child { color: rgba(245, 247, 242, .68); }

.operator-console {
  margin-top: 72px;
  border: 1px solid rgba(245, 247, 242, .18);
  background: #0a1b21;
}

.console-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  padding: 20px;
  border-bottom: 1px solid rgba(245, 247, 242, .14);
}

.console-toolbar label {
  display: grid;
  gap: 8px;
  width: min(520px, 70%);
  color: rgba(245, 247, 242, .58);
  font: 600 10px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.console-toolbar input {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  border: 1px solid rgba(245, 247, 242, .24);
  border-radius: 0;
  background: #07191f;
  color: var(--chalk);
}

.municipal-toggle {
  min-height: 48px;
  padding: 8px 14px;
  border: 1px solid rgba(245, 247, 242, .24);
  background: transparent;
  color: var(--chalk);
  cursor: pointer;
  font: 600 10px/1.3 var(--mono);
}

.municipal-toggle[aria-pressed="true"] { border-color: var(--chlorine); color: var(--chlorine); }

.manifold-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr);
  min-height: 720px;
}

.manifold {
  position: relative;
  max-height: 860px;
  padding: 58px 22px 28px;
  overflow: auto;
  border-right: 1px solid rgba(245, 247, 242, .14);
}

.manifold-scale {
  position: absolute;
  top: 24px;
  right: 62px;
  left: 42%;
  display: flex;
  justify-content: space-between;
  color: rgba(245, 247, 242, .42);
  font: 600 9px/1 var(--mono);
}

.operator-rows { display: grid; }

.operator-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(190px, 40%) minmax(180px, 1fr) 68px 18px;
  gap: 12px;
  align-items: center;
  min-height: 46px;
  padding: 5px 8px;
  border: 0;
  border-bottom: 1px solid rgba(245, 247, 242, .08);
  background: transparent;
  color: var(--chalk);
  cursor: pointer;
  text-align: left;
}

.operator-row:hover,
.operator-row.is-selected { background: rgba(125, 226, 209, .09); }
.operator-row.is-selected::before { content: ""; position: absolute; top: 8px; bottom: 8px; left: -8px; width: 4px; background: var(--chlorine); }
.operator-row[hidden] { display: none; }
.operator-row.municipal:not([hidden]) .operator-name::after { content: "M"; margin-left: 7px; color: var(--chlorine); font: 600 9px/1 var(--mono); }

.operator-name {
  overflow: hidden;
  font-size: 12px;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.operator-name b { display: inline-block; width: 32px; color: rgba(245, 247, 242, .42); font: 600 10px/1 var(--mono); }
.operator-chart { position: relative; display: block; }
.operator-chart::after { content: ""; position: absolute; top: -3px; bottom: -3px; left: 50%; border-left: 1px dashed rgba(245, 247, 242, .34); }
.operator-chart svg { display: block; width: 100%; height: 22px; overflow: visible; }
.bar-track { fill: rgba(245, 247, 242, .08); }
.bar-physical { fill: var(--oxide); }
.bar-other { fill: var(--enamel); stroke: var(--chlorine); stroke-width: .28; stroke-dasharray: 1 1; }
.operator-row > strong { text-align: right; font: 600 11px/1 var(--mono); }
.quality-mark { display: grid; place-items: center; width: 16px; height: 16px; border: 1px solid var(--oxide); color: var(--oxide); font: 600 9px/1 var(--mono); font-style: normal; }

.benchmark-line {
  position: absolute;
  z-index: 2;
  top: 43px;
  left: calc(42% + (58% - 62px) * .5);
  color: var(--chlorine);
  font: 600 9px/1 var(--mono);
  pointer-events: none;
}

.benchmark-line span { position: absolute; bottom: 4px; left: 6px; width: 128px; }
.empty-result { padding: 40px 10px; color: var(--chalk); text-align: center; }

.operator-profile {
  position: sticky;
  top: 0;
  align-self: start;
  padding: 28px;
}

.meter-plate {
  position: relative;
  padding: 24px;
  border: 8px solid #22363d;
  background: var(--concrete);
  color: var(--wet-ink);
  box-shadow: inset 0 0 0 2px #758184;
}

.meter-plate::before,
.meter-plate::after { content: ""; position: absolute; width: 8px; height: 8px; border-radius: 50%; background: #758184; }
.meter-plate::before { top: 8px; left: 8px; }
.meter-plate::after { right: 8px; bottom: 8px; }
.plate-kicker { font: 600 9px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.meter-plate h3 { min-height: 54px; margin: 18px 0; font: 900 30px/.95 var(--display); text-transform: uppercase; }

.profile-reading { display: flex; align-items: baseline; color: var(--oxide); }
.profile-reading strong { font: 900 78px/.85 var(--display); }
.profile-reading > span { font: 900 34px/1 var(--display); }
.profile-reading small { margin-left: auto; color: var(--wet-ink); font: 600 10px/1 var(--mono); }

.profile-split { display: grid; gap: 6px; margin-top: 22px; padding-top: 14px; border-top: 1px solid var(--line); }
.profile-split span { display: grid; grid-template-columns: 10px 58px 1fr; gap: 7px; align-items: center; font-size: 11px; }
.profile-split i { width: 9px; height: 9px; }
.physical-dot { background: var(--oxide); }
.other-dot { border: 1px dashed var(--wet-ink); background: var(--enamel); }
.profile-split b { font-family: var(--mono); }

.trend-panel { margin: 26px 0; }
.trend-panel h4 { margin: 0 0 12px; font: 600 10px/1 var(--mono); text-transform: uppercase; }
.trend-values { display: grid; gap: 8px; }
.trend-values span { display: grid; grid-template-columns: 34px 1fr 58px; gap: 8px; align-items: center; }
.trend-values b,
.trend-values em { font: 600 9px/1 var(--mono); font-style: normal; }
.trend-values em { text-align: right; }
.trend-values svg { width: 100%; height: 12px; }
.trend-track { fill: rgba(245, 247, 242, .08); }
.trend-fill { fill: var(--enamel); }

.profile-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 0; background: rgba(245, 247, 242, .12); }
.profile-facts div { min-height: 86px; padding: 12px; background: #0a1b21; }
.profile-facts dt { color: rgba(245, 247, 242, .5); font-size: 10px; line-height: 1.2; }
.profile-facts dd { margin: 10px 0 0; color: var(--chalk); font: 600 18px/1 var(--mono); }

.source-button { display: flex; justify-content: space-between; margin-top: 20px; padding: 14px; border: 1px solid var(--chlorine); color: var(--chlorine); font: 600 10px/1 var(--mono); text-decoration: none; text-transform: uppercase; }
.source-button:hover { background: var(--chlorine); color: var(--wet-ink); }

.console-key { display: flex; gap: 20px; padding: 14px 20px; border-top: 1px solid rgba(245, 247, 242, .14); color: rgba(245, 247, 242, .62); font-size: 11px; }
.console-key span { display: flex; gap: 7px; align-items: center; }
.console-key i { width: 10px; height: 10px; }
.key-physical { background: var(--oxide); }
.key-other { border: 1px dashed var(--chlorine); background: var(--enamel); }
.inverse-note { margin: 0; padding: 0 20px 20px; }

.plan-act { overflow: hidden; }
.pressure-gauge { max-width: 1000px; margin: 74px auto 0; padding: 36px; border: 10px solid #22363d; background: #07191f; color: var(--chalk); }
.gauge-face { position: relative; padding-top: 110px; }
.gauge-face svg { display: block; width: 100%; overflow: visible; }
.gauge-pipe { fill: none; stroke: #5f6e73; stroke-width: 5; stroke-linecap: square; }
.target-zone { fill: none; stroke: var(--chlorine); stroke-width: 2; }
.gauge-tick { stroke: var(--chalk); stroke-width: .6; }
.gauge-tick.actual { stroke: var(--oxide); stroke-width: 1.2; }
.gauge-tick.plan { stroke: var(--chlorine); }
.actual-knob { fill: var(--oxide); stroke: var(--chalk); stroke-width: .7; }
.gauge-label { position: absolute; display: grid; gap: 3px; width: 120px; font: 600 10px/1.2 var(--mono); transform: translateX(-50%); }
.gauge-label b { color: var(--chalk); font-size: 18px; }
.gauge-label span { color: rgba(245, 247, 242, .55); }
.final-label { top: 58px; left: 9.9%; }
.plan-label { top: 18px; left: 76.2%; }
.reference-label { top: 62px; left: 85.4%; }
.actual-label { top: 0; left: 89.6%; color: var(--oxide); text-align: right; }
.actual-label b { color: var(--oxide); }
.pressure-gauge > p { margin: 12px 0 0; color: rgba(245, 247, 242, .5); font: 600 9px/1.4 var(--mono); }

.outside-act { background: var(--enamel-dark); color: var(--chalk); }
.outside-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 70px; background: rgba(245, 247, 242, .24); }
.outside-grid article { min-height: 260px; padding: 30px; background: var(--enamel-dark); }
.outside-grid article.warning { background: var(--oxide-dark); }
.cut-number { display: block; font: 900 clamp(76px, 10vw, 138px)/.8 var(--display); }
.outside-grid p { max-width: 230px; margin: 32px 0 0; font-weight: 650; line-height: 1.15; }

.closing {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 88svh;
  padding: 110px 24px;
  background: var(--chlorine);
  text-align: center;
}

.closing h2 { max-width: 980px; }
.closing p { max-width: 720px; margin: 36px 0 0; font-size: 22px; }
.closing-valve { position: absolute; top: -47px; display: grid; place-items: center; width: 94px; height: 94px; border: 12px solid #22363d; border-radius: 50%; background: var(--oxide); }
.closing-valve i { width: 70px; height: 10px; background: var(--wet-ink); transform: rotate(-22deg); }

.method {
  display: grid;
  grid-template-columns: minmax(280px, .7fr) minmax(0, 1.3fr);
  gap: 80px;
  padding: 110px max(24px, calc((100vw - 1180px) / 2));
  background: var(--chalk);
}

.method h2 { font-size: clamp(52px, 6vw, 84px); }
.method-copy p { max-width: 700px; }
.method-copy p + p { color: var(--ink-soft); }
.source-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 36px 0 0; padding: 0; background: var(--line); list-style: none; }
.source-list a { display: block; min-height: 58px; padding: 16px; background: var(--chalk); font: 600 11px/1.35 var(--mono); text-decoration: none; }
.source-list a:hover { background: var(--wet-ink); color: var(--chalk); }

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px max(24px, calc((100vw - 1180px) / 2));
  background: var(--wet-ink);
  color: rgba(245, 247, 242, .55);
  font: 600 9px/1.4 var(--mono);
}

footer p { margin: 0; }
footer a { color: var(--chalk); text-decoration: none; }

.back-top {
  position: fixed;
  z-index: 20;
  right: 18px;
  bottom: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 12px 14px;
  border: 1px solid var(--wet-ink);
  background: var(--chalk);
  color: var(--wet-ink);
  box-shadow: 6px 6px 0 var(--wet-ink);
  font: 600 10px/1 var(--mono);
  text-decoration: none;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.no-js .back-top {
  position: static;
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 120px; }
  .pipe-instrument { width: min(680px, 100%); margin: 0 auto; }
  .pipe-shell::before,
  .pipe-shell::after { display: none; }
  .act-heading { grid-template-columns: 1fr; gap: 28px; }
  .connection-board { grid-template-columns: 1fr; }
  .total-gap { position: static; grid-column: 1; justify-self: center; transform: none; }
  .access-act .section-note { margin-top: 42px; }
  .manifold-layout { grid-template-columns: 1fr; }
  .operator-profile { position: static; grid-row: 1; border-bottom: 1px solid rgba(245, 247, 242, .14); }
  .manifold { grid-row: 2; border-right: 0; }
  .method { grid-template-columns: 1fr; gap: 38px; }
}

@media (max-width: 680px) {
  :root { --page: calc(100vw - 32px); }
  body { font-size: 17px; }
  .utility-header { height: 62px; }
  .header-pipe { display: none; }
  .utility-header { grid-template-columns: 1fr auto; }
  .hero { gap: 48px; min-height: auto; padding: 100px 16px 64px; }
  .hero h1 { font-size: clamp(60px, 20vw, 92px); }
  .hero-deck { font-size: 27px; }
  .pipe-shell { padding: 22px; border-width: 9px; border-radius: 24px; }
  .pipe-shell::before,
  .pipe-shell::after { display: none; }
  .litre-grid { gap: 3px; }
  .composition-key { margin-right: 0; margin-left: 0; }
  .valve-control { width: 100%; }
  .service-main { height: 70px; }
  .service-main span { width: 46px; border-right-width: 8px; border-left-width: 8px; }
  .act { padding: 88px 16px; }
  .act-heading h2,
  .closing h2 { font-size: clamp(52px, 16vw, 76px); }
  .act-heading > p:last-child { font-size: 18px; }
  .connection-board { margin-top: 48px; }
  .connection-line { padding: 20px 16px; }
  .connection-values { grid-template-columns: 1fr; }
  .connection-values .people-gap { grid-column: 1; }
  .operator-console { margin-right: -16px; margin-left: -16px; }
  .console-toolbar { align-items: stretch; flex-direction: column; }
  .console-toolbar label { width: 100%; }
  .municipal-toggle { width: 100%; }
  .operator-profile { padding: 18px 16px 26px; }
  .meter-plate { padding: 20px; }
  .profile-reading strong { font-size: 68px; }
  .manifold { max-height: 740px; padding: 54px 10px 24px; }
  .operator-row { grid-template-columns: minmax(112px, 38%) 1fr 57px 16px; gap: 6px; padding-right: 2px; padding-left: 2px; }
  .operator-name { font-size: 10px; }
  .operator-name b { width: 24px; }
  .manifold-scale { right: 54px; left: 40%; }
  .benchmark-line { left: calc(40% + (60% - 54px) * .5); }
  .pressure-gauge { margin-top: 52px; padding: 24px 10px 18px; border-width: 8px; }
  .gauge-face { padding-top: 138px; }
  .gauge-label { width: 82px; font-size: 8px; }
  .gauge-label b { font-size: 14px; }
  .final-label { top: 80px; }
  .plan-label { top: 42px; left: 71%; }
  .reference-label { top: 92px; left: 80%; }
  .actual-label { top: 0; left: 90%; }
  .outside-grid { grid-template-columns: 1fr; }
  .outside-grid article { min-height: 190px; }
  .closing { min-height: 78svh; }
  .closing p { font-size: 19px; }
  .method { padding: 88px 16px; }
  .source-list { grid-template-columns: 1fr; }
  footer { align-items: flex-start; flex-direction: column; padding: 24px 16px 80px; }
  .back-top { right: 12px; bottom: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

@media print {
  .utility-header,
  .valve-control,
  .console-toolbar,
  .back-top { display: none !important; }
  .hero,
  .operator-act,
  .outside-act { color-adjust: exact; print-color-adjust: exact; }
  .manifold { max-height: none; overflow: visible; }
  .operator-row.municipal { display: grid !important; }
}