/* Layout: alternating full-width bands (petrol dark / mineral light / steel)
   on a 1200px grid; drilling cross-section hero; specs set in mono like a datasheet. */
:root {
  --petrol: #0e2a33;       /* dark band ground */
  --petrol-2: #143844;     /* raised surface on dark */
  --mineral: #eef2f2;      /* light band ground */
  --steel: #dfe5e6;        /* alternate light band */
  --paper: #ffffff;        /* cards on light */
  --ink: #0d1f26;          /* text on light */
  --ink-soft: #4b5f66;     /* secondary text on light */
  --line: #c3cfd1;         /* rules on light */
  --fog: #e6eef0;          /* text on dark */
  --fog-soft: #9fb5bb;     /* secondary text on dark */
  --line-dark: #2a4b56;    /* rules on dark */
  --amber: #f2a531;        /* hydraulic-oil amber accent */
  --amber-ink: #8a5300;    /* amber for text on light */

  --f-display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --f-body: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --s-xs: 0.85rem; --s-sm: 0.95rem; --s-md: 1.0625rem; --s-lg: 1.375rem;
  --s-xl: clamp(1.9rem, 1.2rem + 2.6vw, 3rem);
  --s-hero: clamp(2.5rem, 1.4rem + 4.4vw, 4.6rem);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--mineral);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--s-md);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 600; line-height: 1.05; margin: 0; text-wrap: balance; letter-spacing: 0.005em; }
h3 { font-size: var(--s-lg); }
p { margin: 0; }
.mono { font-family: var(--f-mono); font-size: 0.92em; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; }

.wrap {
  max-width: 1200px;
  margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

.skip { position: absolute; left: -999px; top: 8px; background: var(--amber); color: var(--ink); padding: 8px 14px; z-index: 50; }
.skip:focus { left: 12px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--f-display); font-weight: 600; font-size: 1.05rem;
  letter-spacing: 0.06em; text-transform: uppercase; text-decoration: none;
  padding: 0.7em 1.4em; border: 2px solid transparent; border-radius: 2px;
  cursor: pointer; transition: background .15s, color .15s, border-color .15s;
}
.btn-accent { background: var(--amber); color: var(--petrol); }
.btn-accent:hover { background: var(--fog); }
.btn-ghost { border-color: var(--fog-soft); color: var(--fog); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }
.btn-dark { background: var(--petrol); color: var(--fog); }
.btn-dark:hover { background: var(--amber); color: var(--petrol); }

.eyebrow {
  font-family: var(--f-mono); font-size: var(--s-xs); text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--amber-ink);
}
.band-dark .eyebrow, .hero .eyebrow { color: var(--amber); }

/* Header */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: var(--petrol); color: var(--fog);
  border-bottom: 1px solid var(--line-dark);
}
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--fog); }
.brand-mark { width: 30px; height: 30px; color: var(--fog); }
.brand-chip { fill: var(--amber); }
.brand-text { font-family: var(--f-display); font-weight: 700; font-size: 1.6rem; text-transform: uppercase; letter-spacing: 0.04em; line-height: 1; }
.brand-text span { font-weight: 500; color: var(--fog-soft); margin-left: 0.25em; }
.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav a:not(.btn) { text-decoration: none; font-size: var(--s-sm); color: var(--fog); opacity: .85; }
.site-nav a:not(.btn):hover { opacity: 1; color: var(--amber); }
.nav-cta { padding: 0.5em 1em; font-size: 0.95rem; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line-dark); width: 44px; height: 40px; border-radius: 2px; cursor: pointer; }
.bars, .bars::before, .bars::after { display: block; width: 20px; height: 2px; background: var(--fog); margin-inline: auto; position: relative; transition: transform .2s; }
.bars::before, .bars::after { content: ""; position: absolute; left: 0; }
.bars::before { top: -6px; } .bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bars::after { transform: translateY(-6px) rotate(-45deg); }

/* Hero */
.hero { background: var(--petrol); color: var(--fog); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; padding-block: 72px 64px; }
.hero-copy { display: flex; flex-direction: column; gap: 22px; min-width: 0; }
.hero h1 { font-size: var(--s-hero); font-weight: 700; text-transform: uppercase; letter-spacing: 0.01em; line-height: 0.98; }
.lede { font-size: 1.15rem; color: var(--fog-soft); max-width: 58ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 12px 0 0; border-top: 1px solid var(--line-dark); }
.hero-facts div { padding: 16px 16px 0 0; }
.hero-facts div + div { padding-left: 16px; border-left: 1px solid var(--line-dark); }
.hero-facts dt { font-family: var(--f-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--fog-soft); }
.hero-facts dd { margin: 4px 0 0; font-family: var(--f-display); font-size: 2.2rem; font-weight: 600; line-height: 1; color: var(--fog); font-variant-numeric: tabular-nums; }
.hero-facts small { display: block; font-family: var(--f-mono); font-size: 0.72rem; color: var(--amber); letter-spacing: 0.06em; margin-top: 6px; }

.hero-section { margin: 0; min-width: 0; }
.hero-section svg { display: block; width: 100%; height: auto; }
.hero-section figcaption { font-family: var(--f-mono); font-size: 0.75rem; color: var(--fog-soft); margin-top: 10px; }
.st1 { fill: #3b5560; } .st2 { fill: #31505a; } .st3 { fill: #26434d; } .st4 { fill: #1c3740; }
.seam { fill: none; stroke: #0e2a33; stroke-width: 2; opacity: .5; }
.ore { fill: var(--amber); opacity: .22; stroke: var(--amber); stroke-dasharray: 4 4; }
.rig-track { fill: #0a1f26; stroke: var(--fog-soft); stroke-width: 1.5; }
.rig-wheel { fill: var(--fog-soft); }
.rig-body, .rig-head { fill: var(--amber); }
.rig-cab { fill: none; stroke: var(--amber); stroke-width: 2; }
.rig-mast { fill: var(--fog); }
.rig-strut { stroke: var(--fog-soft); stroke-width: 2; }
.drill-string { stroke: var(--fog); stroke-width: 3; stroke-dasharray: 280; stroke-dashoffset: 0; animation: bore 2.4s ease-out both; }
.bit { fill: var(--amber); }
.scale line { stroke: var(--fog-soft); stroke-width: 1; }
.scale text, .labels text { font-family: var(--f-mono); font-size: 11px; fill: var(--fog-soft); }
.labels text { fill: var(--fog); opacity: .8; }
@keyframes bore { from { stroke-dashoffset: 280; } to { stroke-dashoffset: 0; } }

/* Bands */
.band { padding-block: 88px; }
.band-tight { padding-block: 64px; }
.band-light { background: var(--mineral); color: var(--ink); }
.band-steel { background: var(--steel); color: var(--ink); }
.band-dark { background: var(--petrol); color: var(--fog); }

.section-head { display: flex; flex-direction: column; gap: 14px; max-width: 760px; margin-bottom: 44px; }
.section-head h2 { font-size: var(--s-xl); text-transform: uppercase; font-weight: 700; }
.section-head p:not(.eyebrow) { color: var(--ink-soft); max-width: 62ch; }
.band-dark .section-head p:not(.eyebrow) { color: var(--fog-soft); }

/* Divisions */
.divisions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.division { display: flex; flex-direction: column; gap: 12px; padding: 28px 24px 26px; background: var(--paper); text-decoration: none; color: var(--ink); transition: background .15s; min-width: 0; }
.division:hover { background: var(--petrol); color: var(--fog); }
.division:hover p { color: var(--fog-soft); }
.division:hover .division-tag, .division:hover .more { color: var(--amber); }
.division h3 { font-size: 1.6rem; text-transform: uppercase; }
.division p { color: var(--ink-soft); font-size: var(--s-sm); flex: 1; }
.division-tag { font-family: var(--f-mono); font-size: var(--s-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--amber-ink); }
.more { font-family: var(--f-display); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.95rem; }
.more::after { content: " →"; }

/* Lifting tables */
.spec { width: 100%; border-collapse: collapse; font-size: var(--s-sm); }
.spec th { font-family: var(--f-mono); font-weight: 500; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); text-align: left; padding: 0 12px 10px 0; border-bottom: 2px solid var(--ink); }
.spec td { padding: 12px 12px 12px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec td:first-child { font-weight: 500; }
.spec td:nth-child(2) { color: var(--ink-soft); }
.spec .num { text-align: right; padding-right: 0; white-space: nowrap; font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.04em; padding: 3px 8px; border: 1px solid var(--line); color: var(--ink-soft); }
.lift-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.lift-points div { display: flex; flex-direction: column; gap: 8px; }
.lift-points h3 { text-transform: uppercase; font-size: 1.3rem; }
.lift-points p { color: var(--ink-soft); font-size: var(--s-sm); }
.lift-points-dark p { color: var(--fog-soft); }

/* Page hero (sub-pages) */
.page-hero { background: var(--petrol); color: var(--fog); }
.page-hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; padding-block: 56px; }
.page-hero-copy { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.page-hero h1 { font-size: clamp(2.2rem, 1.3rem + 3.2vw, 3.8rem); font-weight: 700; text-transform: uppercase; line-height: 1; }
.page-hero .eyebrow { color: var(--amber); }
.page-hero-fig { margin: 0; background: var(--mineral); border: 1px solid var(--line-dark); padding: 12px; background-image: linear-gradient(var(--steel) 1px, transparent 1px), linear-gradient(90deg, var(--steel) 1px, transparent 1px); background-size: 24px 24px; }
.page-hero-fig img { display: block; width: 100%; height: auto; }
.crumbs { display: flex; gap: 8px; font-family: var(--f-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--fog-soft); }
.crumbs a { color: var(--fog); text-decoration: none; }
.crumbs a:hover { color: var(--amber); }
.site-nav a[aria-current="page"]:not(.btn) { color: var(--amber); opacity: 1; }

/* Example machine cards */
.ex-grid { display: grid; gap: 24px; }
.ex-grid-2 { grid-template-columns: repeat(2, 1fr); }
.ex-grid-3 { grid-template-columns: repeat(3, 1fr); }
.ex-card { background: var(--paper); border: 1px solid var(--line); display: flex; flex-direction: column; min-width: 0; }
.ex-fig { margin: 0; aspect-ratio: 8 / 5; max-width: 100%; border-bottom: 1px solid var(--line); background-color: #f7f9f9; background-image: linear-gradient(#e7eded 1px, transparent 1px), linear-gradient(90deg, #e7eded 1px, transparent 1px); background-size: 24px 24px; display: flex; align-items: center; justify-content: center; padding: 10px; }
.ex-fig img { width: 100%; height: 100%; object-fit: contain; display: block; transition: transform .3s ease; }
.ex-card:hover .ex-fig img { transform: scale(1.03); }
.ex-body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.ex-tag { font-family: var(--f-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--amber-ink); }
.ex-body h3 { font-size: 1.55rem; text-transform: uppercase; }
.ex-body > p:not(.ex-tag) { color: var(--ink-soft); font-size: var(--s-sm); }
.ex-specs { margin: 4px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); }
.ex-specs div { padding: 10px 10px 0 0; min-width: 0; }
.ex-specs div + div { padding-left: 10px; border-left: 1px solid var(--line); }
.ex-specs dt { font-family: var(--f-mono); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); }
.ex-specs dd { margin: 4px 0 0; font-family: var(--f-display); font-weight: 600; font-size: 1.2rem; line-height: 1.1; font-variant-numeric: tabular-nums; }
.ex-card-cta { background: var(--petrol); color: var(--fog); border-color: var(--petrol); justify-content: center; }
.ex-card-cta .ex-body { justify-content: center; align-items: flex-start; }
.ex-card-cta .ex-body > p:not(.ex-tag) { color: var(--fog-soft); }
.ex-card-cta .ex-tag { color: var(--amber); }

/* Lifting page */
.chipbar { background: var(--paper); border-bottom: 1px solid var(--line); position: sticky; top: calc(env(safe-area-inset-top, 0px) + 68px); z-index: 10; }
.chips { display: flex; gap: 8px; align-items: center; padding-block: 12px; overflow-x: auto; }
.chips-label { font-family: var(--f-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); margin-right: 6px; white-space: nowrap; }
.chip { white-space: nowrap; font-family: var(--f-display); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; text-decoration: none; padding: 6px 14px; border: 1px solid var(--line); color: var(--ink); }
.chip:hover { border-color: var(--amber); background: var(--amber); }
.range { margin-top: 24px; background: var(--paper); border: 1px solid var(--line); }
.range summary { cursor: pointer; padding: 16px 20px; font-family: var(--f-display); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; font-size: 1.15rem; }
.range summary:hover { color: var(--amber-ink); }
.table-wrap { overflow-x: auto; padding: 4px 20px 20px; }
.band[id] { scroll-margin-top: 130px; }

/* Shared blocks */
.split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.split .section-head { margin-bottom: 0; }
.split-fig { margin: 0; background: var(--paper); border: 1px solid var(--line); padding: 16px; }
.split-fig img { display: block; width: 100%; height: auto; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 2px solid var(--ink); }
.steps li { counter-increment: step; display: flex; flex-direction: column; gap: 6px; padding: 18px 20px 0 0; }
.steps li + li { padding-left: 20px; border-left: 1px solid var(--line); }
.steps li::before { content: counter(step, decimal-leading-zero); font-family: var(--f-mono); color: var(--amber-ink); font-size: 0.9rem; }
.steps strong { font-family: var(--f-display); text-transform: uppercase; font-size: 1.35rem; font-weight: 600; }
.steps span { color: var(--ink-soft); font-size: var(--s-sm); }
.steps-dark { border-top-color: var(--fog); }
.steps-dark li + li { border-left-color: var(--line-dark); }
.steps-dark li::before { color: var(--amber); }
.steps-dark span { color: var(--fog-soft); }
.cta-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-row div { display: flex; flex-direction: column; gap: 8px; max-width: 60ch; min-width: 0; }
.cta-row h2 { font-size: clamp(1.6rem, 1.1rem + 1.6vw, 2.4rem); text-transform: uppercase; font-weight: 700; }
.cta-row p { color: var(--fog-soft); }
.section-head-split { flex-direction: row; justify-content: space-between; align-items: flex-end; max-width: none; flex-wrap: wrap; }
.section-head-split > div { display: flex; flex-direction: column; gap: 14px; }

.division-fig { margin: -28px -24px 6px; aspect-ratio: 8 / 5; max-width: none; background: #f7f9f9; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: center; padding: 8px; }
.division-fig img { width: 100%; height: 100%; object-fit: contain; }
.home-about { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 56px; align-items: start; }
.home-about .section-head { margin-bottom: 0; align-items: flex-start; }
.branch-mini { display: flex; flex-direction: column; gap: 0; border-top: 2px solid var(--ink); }
.branch-mini > div { padding: 18px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.branch-mini h3 { font-size: 1.6rem; text-transform: uppercase; }
.branch-mini p:not(.branch-kind) { color: var(--ink-soft); font-size: var(--s-sm); }
.branch-mini .more { margin-top: 16px; color: var(--ink); text-decoration: none; }

.check-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.check-list li { padding-left: 28px; position: relative; }
.check-list li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 14px; height: 8px; border-left: 2px solid var(--amber-ink); border-bottom: 2px solid var(--amber-ink); transform: rotate(-45deg); }

/* Sectors */
.section-head-row { margin-bottom: 32px; }
.sectors { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line-dark); }
.sectors li { padding: 20px 20px 20px 0; border-bottom: 1px solid var(--line-dark); display: flex; flex-direction: column; gap: 4px; }
.sectors strong { font-family: var(--f-display); font-size: 1.4rem; text-transform: uppercase; font-weight: 600; color: var(--fog); }
.sectors span { color: var(--fog-soft); font-size: var(--s-sm); }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1.3fr; column-gap: 56px; row-gap: 0; }
.about-grid .section-head { grid-row: span 2; }
.about-body { display: flex; flex-direction: column; gap: 16px; max-width: 64ch; }
.about-stats { margin: 36px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); }
.about-stats div { padding: 14px 14px 0 0; }
.about-stats dt { font-family: var(--f-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); }
.about-stats dd { margin: 6px 0 0; font-family: var(--f-display); font-size: 1.5rem; font-weight: 600; line-height: 1.1; }

/* Branches */
.branches { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.branch { background: var(--paper); padding: 32px; display: flex; flex-direction: column; gap: 14px; border-top: 4px solid var(--petrol); }
.branch:nth-child(2) { border-top-color: var(--amber); }
.branch-kind { font-family: var(--f-mono); font-size: var(--s-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--amber-ink); }
.branch h3 { font-size: 1.9rem; text-transform: uppercase; }
.branch address { font-style: normal; color: var(--ink-soft); }
.branch-contact { margin: 0; display: flex; flex-direction: column; gap: 8px; padding-top: 14px; border-top: 1px solid var(--line); }
.branch-contact div { display: grid; grid-template-columns: 70px 1fr; gap: 12px; }
.branch-contact dt { font-family: var(--f-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); padding-top: 3px; }
.branch-contact dd { margin: 0; overflow-wrap: anywhere; }
.branch-contact a { text-decoration-color: var(--amber); text-underline-offset: 3px; }

/* Contact */
.email-block { display: flex; flex-direction: column; gap: 14px; }
.email-big { font-family: var(--f-display); font-weight: 700; font-size: clamp(2rem, 1.2rem + 4vw, 4.2rem); line-height: 1; overflow-wrap: anywhere; }
.email-big a { color: var(--fog); text-decoration: none; border-bottom: 4px solid var(--amber); }
.email-big a:hover { color: var(--amber); }
.email-block p:last-child { color: var(--fog-soft); }

/* Video page hero */
.page-hero-video { position: relative; overflow: hidden; isolation: isolate; }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.hero-shade { position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(9, 29, 36, 0.9) 0%, rgba(9, 29, 36, 0.55) 45%, rgba(9, 29, 36, 0) 75%); }
.page-hero-video .page-hero-grid { grid-template-columns: minmax(0, 640px); padding-block: 120px; min-height: 520px; }
.page-hero-video .lede { color: var(--fog); }

/* Footer */
.site-footer { background: #091d24; color: var(--fog-soft); padding-block: 56px 28px; font-size: var(--s-sm); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 32px; }
.footer-grid > div:first-child { display: flex; flex-direction: column; gap: 14px; max-width: 34ch; }
.site-footer nav, .footer-grid > div:last-child { display: flex; flex-direction: column; gap: 8px; }
.site-footer h4 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fog); margin-bottom: 4px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--amber); }
.footer-base { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 44px; padding-top: 20px; border-top: 1px solid var(--line-dark); font-size: var(--s-xs); }

/* Responsive */
@media (max-width: 1080px) {
  .divisions, .ex-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
  .steps li:nth-child(3) { padding-left: 0; border-left: 0; }
  .sectors { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--petrol); border-bottom: 1px solid var(--line-dark);
    padding: 8px max(20px, env(safe-area-inset-right, 0px)) 20px max(20px, env(safe-area-inset-left, 0px));
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line-dark); font-size: 1rem; }
  .nav-cta { margin-top: 16px; }
  .hero-grid, .page-hero-grid, .split, .home-about, .contact-grid, .about-grid, .ex-grid-2 { grid-template-columns: 1fr; gap: 40px; }
  .page-hero-fig { max-width: 520px; }
  .chipbar { top: calc(env(safe-area-inset-top, 0px) + 68px); }
  .about-grid .section-head { grid-row: auto; margin-bottom: 0; }
  .about-grid { row-gap: 24px; }
  .hero-section { max-width: 460px; }
  .lift-points { grid-template-columns: 1fr; gap: 24px; }
  .branches { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .page-hero-video .page-hero-grid { padding-block: 72px; min-height: 0; }
  .hero-shade { background: linear-gradient(180deg, rgba(9, 29, 36, 0.75), rgba(9, 29, 36, 0.9)); }
  .band { padding-block: 64px; }
  .hero-grid { padding-block: 48px; }
  .divisions, .ex-grid-3, .sectors, .quote, .footer-grid, .steps { grid-template-columns: 1fr; }
  .steps li, .steps li + li { padding-left: 0; border-left: 0; }
  .ex-specs dd { font-size: 1.05rem; }
  .ex-specs div + div { padding-left: 8px; }
  .hero-facts dd { font-size: 1.7rem; }
  .hero-facts div { padding-right: 10px; }
  .hero-facts div + div { padding-left: 10px; }
  .about-stats { grid-template-columns: 1fr; }
  .about-stats div { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .branch { padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .drill-string { animation: none; }
  .ex-card:hover .ex-fig img { transform: none; }
  * { transition: none !important; }
}