/* =========================================================
   Unicon Infra RMC
   Design idea: poured concrete and formwork.
   - Cool concrete-grey ground with a fine speckle texture
   - Panels carry formwork tie-holes in the corners
   - Grade ladder uses shuttering board lines
   - Safety amber is used only for actions and the cab
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root {
  --cement: #E5E7E3;   /* page ground */
  --slab:   #F3F4F1;   /* poured panels */
  --slate:  #1E2D37;   /* text, dark sections */
  --slate-2:#2B4250;   /* raised dark surfaces */
  --line:   #C4CAC5;   /* hairlines */
  --muted:  #4F5F69;   /* secondary text on light */
  --muted-on-dark: #B9C6CD;
  --amber:  #F5A800;   /* actions */
  --amber-hi:#FFBB2E;
  --blue:   #2F5F7C;   /* links on light */
  --error:  #B3261E;

  --display: "Big Shoulders Display", "Arial Narrow", Impact, sans-serif;
  --body: "Public Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --wrap: 1180px;
  --gap: clamp(1rem, 2.6vw, 2rem);
  --header-h: 72px;
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font: 400 1.0625rem/1.6 var(--body);
  color: var(--slate);
  background-color: var(--cement);
  /* fine concrete speckle */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n' x='0' y='0'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .12 0 0 0 0 .18 0 0 0 0 .22 0 0 0 .11 0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
}

img, svg { display: block; max-width: 100%; }
p { margin: 0; }
[hidden] { display: none !important; }

h1, h2, h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  line-height: 1;
  letter-spacing: .005em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.9rem, 6.2vw, 5.4rem); line-height: .93; }
h2 { font-size: clamp(2.3rem, 4.4vw, 3.6rem); }
h3 { font-size: 1.75rem; line-height: 1.05; }

a { color: var(--blue); text-underline-offset: .2em; }
a:hover { color: var(--slate); }

:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.section--dark :focus-visible,
.site-footer :focus-visible { outline-color: #fff; }

.wrap {
  width: min(100% - 2rem, var(--wrap));
  margin-inline: auto;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  background: var(--slate); color: #fff; padding: .7rem 1rem; border-radius: 4px;
}
.skip:focus { top: 1rem; }

.fine { font-size: .9rem; color: var(--muted); }

/* ---------- 3. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  min-height: 48px; padding: .8rem 1.3rem;
  font: 600 1rem/1.1 var(--body);
  text-decoration: none; cursor: pointer;
  border: 2px solid transparent; border-radius: 4px;
  transition: background-color .15s, color .15s, border-color .15s;
}
.btn .icon { width: 1.2rem; height: 1.2rem; fill: currentColor; flex: none; }

.btn--amber { background: var(--amber); border-color: var(--amber); color: var(--slate); }
.btn--amber:hover { background: var(--amber-hi); border-color: var(--amber-hi); color: var(--slate); }

.btn--ghost { background: transparent; border-color: var(--slate); color: var(--slate); }
.btn--ghost:hover { background: var(--slate); color: #fff; }

.btn--light { background: transparent; border-color: rgba(255,255,255,.7); color: #fff; }
.btn--light:hover { background: #fff; border-color: #fff; color: var(--slate); }

.btn--slate { background: var(--slate); border-color: var(--slate); color: #fff; }
.btn--slate:hover { background: var(--slate-2); border-color: var(--slate-2); color: #fff; }

.link-btn {
  background: none; border: 0; padding: .4rem 0; cursor: pointer;
  font: 600 .95rem/1.3 var(--body); color: var(--amber);
  text-decoration: underline; text-underline-offset: .25em; text-align: left;
}
.link-btn:hover { color: #fff; }

/* ---------- 4. Top bar and header ---------- */
.topbar { background: var(--slate); color: var(--muted-on-dark); font-size: .88rem; }
.topbar__inner { display: flex; justify-content: space-between; align-items: center; gap: .5rem 1.5rem; flex-wrap: wrap; min-height: 38px; }
.topbar__links { display: flex; gap: 1.5rem; margin-left: auto; }
.topbar a { color: #fff; text-decoration: none; }
.topbar a:hover { color: var(--amber); }
.topbar__call { font-weight: 600; }
.topbar :focus-visible { outline-color: #fff; }
@media (max-width: 640px) {
  .topbar__hours, .topbar__mail { display: none; }
  .topbar__links { margin-inline: auto; }
}

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--cement);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.site-header.is-stuck { border-color: var(--line); box-shadow: 0 6px 18px -12px rgba(30,45,55,.35); }

.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--header-h); gap: 1rem;
}

.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; color: var(--slate); }
.brand__mark { width: 38px; height: auto; flex: none; }
.brand__text { display: flex; flex-direction: column; }
.brand__name { font: 800 1.75rem/.95 var(--display); letter-spacing: .01em; }
.brand__sub { font-size: .8rem; color: var(--muted); line-height: 1.2; }

.site-nav { display: flex; align-items: center; gap: 1.75rem; }
.site-nav ul { display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.site-nav li a {
  display: inline-block; padding: .4rem 0;
  font-weight: 600; font-size: .95rem; text-decoration: none; color: var(--slate);
  border-bottom: 3px solid transparent;
}
.site-nav li a:hover { border-bottom-color: var(--amber); }

.nav-toggle {
  display: none; width: 48px; height: 48px; padding: 0;
  background: transparent; border: 2px solid var(--slate); border-radius: 4px; cursor: pointer;
  position: relative;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: ""; position: absolute; left: 12px; right: 12px; height: 3px;
  background: var(--slate); border-radius: 2px; transition: transform .2s, opacity .2s;
}
.nav-toggle__bars { top: 21px; }
.nav-toggle__bars::before { left: 0; right: 0; top: -8px; }
.nav-toggle__bars::after  { left: 0; right: 0; top: 8px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 960px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 1rem;
    padding: 1rem 1rem 1.5rem; background: var(--cement);
    border-bottom: 1px solid var(--line);
  }
  .site-nav.is-open { display: flex; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav li a { display: block; padding: .85rem 0; border-bottom: 1px solid var(--line); }
}

/* ---------- 5. Hero ---------- */
/* Photo fills the right side; the copy sits on an angled slate panel,
   with a second translucent slate layer giving a two-step diagonal edge. */
.hero {
  position: relative; overflow: hidden;
  display: flex; align-items: stretch;
  min-height: clamp(480px, 68vh, 640px);
  background: var(--slate);
}
.hero__photo {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: 64%; height: 100%;
  object-fit: cover; object-position: 55% 60%;
}
.hero::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 58%; z-index: 1;
  background: rgba(30, 45, 55, .55);
  clip-path: polygon(0 0, 100% 0, 84% 100%, 0 100%);
}
.hero__panel {
  position: relative; z-index: 2; width: 54%;
  display: flex; align-items: center;
  padding-block: clamp(3rem, 7vw, 5rem);
  padding-left: max(1rem, calc((100vw - var(--wrap)) / 2));
  padding-right: 7%;
  background: var(--slate);
  clip-path: polygon(0 0, 100% 0, 86% 100%, 0 100%);
}
.hero__copy { max-width: 34rem; color: #fff; }
.eyebrow { margin-bottom: 1rem; font-size: .8rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--amber); }
.hero h1 { color: #fff; font-size: clamp(2.7rem, 5vw, 4.4rem); }
.lead { margin-top: 1.3rem; max-width: 46ch; font-size: 1.12rem; line-height: 1.55; color: var(--muted-on-dark); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.8rem; }
.hero__hint { margin-top: 1.1rem; font-size: .95rem; color: var(--muted-on-dark); }
.hero__hint a { color: var(--amber); }
.hero__hint a:hover { color: #fff; }
.hero :focus-visible { outline-color: #fff; }

@media (max-width: 900px) {
  .hero { flex-direction: column; min-height: 0; }
  .hero::before { display: none; }
  .hero__photo { position: static; width: 100%; height: auto; aspect-ratio: 16 / 10; }
  .hero__panel { width: 100%; clip-path: none; padding: 2.25rem 1rem 2.5rem; }
}

/* ---------- 6. Sections ---------- */
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); scroll-margin-top: var(--header-h); }
.section[id] { scroll-margin-top: calc(var(--header-h) - 1px); }

.section--slab {
  background: var(--slab);
  border-block: 1px solid var(--line);
}
.section--dark { background: var(--slate); color: #F3F4F1; }
.section--dark h2 { color: #fff; }
.section--dark .section__head p { color: var(--muted-on-dark); }
.section--dark a:not(.btn) { color: var(--amber); }
.section--dark a:not(.btn):hover { color: #fff; }

.section__head { max-width: 40rem; margin-bottom: clamp(1.75rem, 4vw, 3rem); }
.section__head p { margin-top: 1rem; color: var(--muted); max-width: 56ch; }

/* ---------- 7. Formwork panels ---------- */
.panel {
  --hole: rgba(30, 45, 55, .26);
  --hole-rim: rgba(255, 255, 255, .75);
  position: relative;
  padding: clamp(1.75rem, 3vw, 2.5rem);
  background-color: var(--slab);
  border: 1px solid var(--line);
  background-image:
    radial-gradient(circle at center, var(--hole) 0 3px, var(--hole-rim) 3.5px 4.5px, transparent 5px),
    radial-gradient(circle at center, var(--hole) 0 3px, var(--hole-rim) 3.5px 4.5px, transparent 5px),
    radial-gradient(circle at center, var(--hole) 0 3px, var(--hole-rim) 3.5px 4.5px, transparent 5px),
    radial-gradient(circle at center, var(--hole) 0 3px, var(--hole-rim) 3.5px 4.5px, transparent 5px);
  background-size: 11px 11px;
  background-repeat: no-repeat;
  background-position:
    10px 10px,
    calc(100% - 10px) 10px,
    10px calc(100% - 10px),
    calc(100% - 10px) calc(100% - 10px);
}
.section--slab .panel { background-color: #fff; }

.panel--dark {
  --hole: rgba(0, 0, 0, .45);
  --hole-rim: rgba(255, 255, 255, .16);
  background-color: var(--slate-2);
  border-color: rgba(255, 255, 255, .12);
  color: #F3F4F1;
}
.panel--dark h3 { color: #fff; }
.panel--dark a:not(.btn) { color: var(--amber); }
.panel--dark a:not(.btn):hover { color: #fff; }

/* ---------- 8. Products ---------- */
.products {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}
.products .panel h3 { margin-bottom: .8rem; }
.products .panel p { max-width: 46ch; }
.products__a { grid-column: 1 / span 7; }
.products__b { grid-column: 8 / span 5; }
.products__c { grid-column: 1 / span 5; }
.products__d { grid-column: 6 / span 7; }
.products__a h3 { font-size: 2.4rem; }
.products__a p { color: #D5DEE3; }

@media (max-width: 800px) {
  .products__a, .products__b, .products__c, .products__d { grid-column: 1 / -1; }
}

/* ---------- 8a. Quality testing ---------- */
.qa { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); counter-reset: none; }
.qa__stage { position: relative; }
/* a thin connector between stages on wide screens */
.qa__stage:not(:last-child)::after {
  content: ""; position: absolute; top: 2.9rem; right: calc(-1 * var(--gap)); width: var(--gap); height: 2px; background: var(--line);
}
.qa__step { display: flex; align-items: center; gap: .6rem; font-size: .8rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.qa__step span {
  display: grid; place-items: center; width: 1.9rem; height: 1.9rem; border-radius: 50%;
  background: var(--slate); color: var(--amber); font: 800 1.05rem/1 var(--display); letter-spacing: 0;
}
.qa__stage h3 { margin: .9rem 0 1.1rem; }
.qa__tests { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; }
.qa__tests li { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: .9rem; align-items: start; padding-top: 1.1rem; border-top: 1px solid var(--line); }
.qa__icon { width: 40px; height: 40px; fill: none; stroke: var(--slate); stroke-width: 1.8; stroke-linejoin: round; stroke-linecap: round; }
.qa__icon circle { fill: var(--slate); stroke: none; }
.qa__tests h4 { margin: 0 0 .25rem; font-size: 1rem; line-height: 1.3; }
.qa__tests p { font-size: .95rem; color: var(--muted); }

@media (max-width: 900px) {
  .qa { grid-template-columns: 1fr; }
  .qa__stage:not(:last-child)::after { top: auto; bottom: calc(-1 * var(--gap)); right: auto; left: 2.6rem; width: 2px; height: var(--gap); }
}

/* ---------- 8b. About ---------- */
/* One white panel the width of the content: the truck parks bottom-left,
   the text sits on the right, and the road runs along the whole bottom. */
.about {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  padding: clamp(2rem, 4.5vw, 3.75rem) clamp(1.5rem, 4vw, 3.5rem) 0;
  padding-bottom: 22px;               /* room for the road */
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
}
.about__left { display: flex; flex-direction: column; justify-content: space-between; gap: 2rem; }
.about__left .section__head { margin-bottom: 0; }
.about__media { margin: 0 0 0 calc(-1 * clamp(.5rem, 1.5vw, 1.25rem)); }
.about__main { padding-bottom: clamp(2rem, 4vw, 3rem); }
.about__main .about__copy:first-child { margin-top: .4rem; }
.truck { width: 100%; height: auto; }

/* The one moving part: the drum turns. */
.spiral { animation: drum-turn 3.6s linear infinite; }
@keyframes drum-turn { to { transform: translateX(104px); } }
@media (prefers-reduced-motion: reduce) {
  .spiral { animation: none; }
}

.road { position: relative; height: 22px; background: var(--slate); }
.road::after {
  content: ""; position: absolute; left: 0; right: 0; top: 9px; height: 4px;
  background: repeating-linear-gradient(90deg, #E9B33A 0 36px, transparent 36px 76px);
}
.about__road { position: absolute; left: 0; right: 0; bottom: 0; }

.about__copy { color: var(--muted); max-width: 56ch; margin-top: 1rem; }

.figures { display: flex; flex-wrap: wrap; gap: 1rem 1.75rem; margin: 2rem 0 0; }
.figures div { display: flex; flex-direction: column-reverse; gap: .2rem; padding-left: 1rem; border-left: 3px solid var(--amber); }
.figures dt { font-size: .88rem; color: var(--muted); }
.figures dd { margin: 0; font: 800 2.4rem/1 var(--display); }

/* sister plant strip under the panel */
.sister-strip {
  display: flex; align-items: center; gap: 1rem 1.5rem;
  margin-top: 1rem; padding: 1rem clamp(1.25rem, 3vw, 2rem);
  background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--amber);
}
.sister-strip__logo { width: 42px; height: auto; flex: none; }
.sister-strip__text { color: var(--muted); max-width: 72ch; }
.sister-strip__text strong { font: 800 1.2rem/1 var(--display); color: var(--slate); margin-right: .3rem; }
.sister-strip__mail { margin-left: auto; font-weight: 600; white-space: nowrap; }

@media (max-width: 760px) {
  .sister-strip { flex-wrap: wrap; align-items: flex-start; }
  .sister-strip__text { flex: 1 1 14rem; }
  .sister-strip__mail { margin-left: calc(42px + 1.5rem); white-space: normal; overflow-wrap: anywhere; }
}

@media (max-width: 900px) {
  .about { grid-template-columns: 1fr; gap: 0; }
  .about__left { display: contents; }
  .about__left .section__head { margin-bottom: 1.25rem; }
  .about__media { order: 2; max-width: 34rem; margin: 0; }
  .about__main { padding-bottom: 1.5rem; }
}

/* ---------- 9. Grade guide ---------- */
.grades {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: end;
}
.grades .section__head { margin-bottom: 1.75rem; }

.readout { display: grid; gap: .9rem; justify-items: start; }
.readout__top { display: flex; align-items: baseline; flex-wrap: wrap; gap: .4rem 1.1rem; }
.readout__code { font: 900 clamp(4rem, 8vw, 5.5rem)/.85 var(--display); color: var(--slate); }
.readout__title { font: 800 1.7rem/1.05 var(--display); }
.readout__strength { font-weight: 600; }
.readout .btn { margin-top: .4rem; }

.ladder {
  display: flex; align-items: flex-end;
  gap: clamp(.35rem, 1vw, .7rem);
  height: 290px;
  border-bottom: 4px solid var(--slate);
}
.bar {
  flex: 1 1 0; min-width: 0; height: var(--h);
  display: flex; justify-content: center; align-items: flex-start;
  padding: .75rem 0 0;
  font: 800 1.3rem/1 var(--display); color: var(--slate);
  background-color: #C8CDC8;
  /* shuttering board joints */
  background-image: repeating-linear-gradient(0deg, transparent 0 39px, rgba(30, 45, 55, .14) 39px 40px);
  border: 0; border-radius: 3px 3px 0 0; cursor: pointer;
  transition: background-color .15s, height .25s ease;
}
.bar:hover { background-color: #B5BCB6; }
.bar[aria-pressed="true"] { background-color: var(--amber); }
.ladder__cap { margin-top: .8rem; font-size: .9rem; color: var(--muted); }

@media (max-width: 900px) {
  .grades { grid-template-columns: 1fr; }
  .ladder { height: 240px; }
  .bar { font-size: 1.1rem; }
}

/* ---------- 10. Estimator ---------- */
.est {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--gap);
  align-items: start;
}
.est__result { position: sticky; top: calc(var(--header-h) + 1rem); color: var(--slate); }
.est__empty { color: var(--muted); }
.est__lead { font-weight: 600; color: var(--muted); }
.est__big { font: 900 clamp(4.5rem, 9vw, 6.5rem)/.9 var(--display); margin-top: .3rem; }
.est__unit { font-size: .45em; letter-spacing: .02em; }
.est__sub { margin-top: .3rem; font-size: 1.15rem; font-weight: 600; }

.est__rows { margin: 1.5rem 0; border-top: 1px solid var(--line); }
.est__rows div {
  display: flex; justify-content: space-between; gap: 1.25rem;
  padding: .75rem 0; border-bottom: 1px solid var(--line);
}
.est__rows dt { color: var(--muted); }
.est__rows dd { margin: 0; font-weight: 600; text-align: right; }
.est__result .btn { width: 100%; }
.est__result .fine { margin-top: .9rem; }

.seg-group { border: 0; padding: 0; margin: 0 0 1.4rem; }
.seg-group legend { padding: 0; margin-bottom: .5rem; font-weight: 600; font-size: .95rem; }
.seg {
  display: inline-flex; flex-wrap: wrap;
  border: 2px solid rgba(255, 255, 255, .4); border-radius: 4px; overflow: hidden;
}
.seg label { display: block; position: relative; cursor: pointer; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span {
  display: block; padding: .7rem 1rem; min-height: 46px;
  font-weight: 600; font-size: .95rem; color: #F3F4F1;
}
.seg label + label span { border-left: 2px solid rgba(255, 255, 255, .4); }
.seg input:checked + span { background: var(--amber); color: var(--slate); }
.seg input:focus-visible + span { outline: 3px solid #fff; outline-offset: -5px; }

@media (max-width: 900px) {
  .est { grid-template-columns: 1fr; }
  .est__result { position: static; }
}

/* ---------- 11. Forms (shared) ---------- */
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem 1rem; margin-bottom: 1rem; }
.field--wide { grid-column: 1 / -1; }
.field label { display: block; margin-bottom: .35rem; font-weight: 600; font-size: .95rem; }
.field input,
.field select,
.field textarea {
  width: 100%; min-height: 48px; padding: .65rem .8rem;
  font: inherit; color: var(--slate);
  background: #fff; border: 2px solid #9AA4A0; border-radius: 4px;
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 3px solid var(--blue); outline-offset: 1px; border-color: var(--blue);
}
.panel--dark .field input:focus,
.panel--dark .field select:focus { outline-color: #fff; }
.field [aria-invalid="true"] { border-color: var(--error); }
.field__error { margin-top: .35rem; font-size: .9rem; font-weight: 600; color: var(--error); }

@media (max-width: 560px) {
  .fields { grid-template-columns: 1fr; }
}

/* ---------- 12. Process ---------- */
.process {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.process .section__head { position: sticky; top: calc(var(--header-h) + 1.5rem); margin-bottom: 0; }

.steps { list-style: none; margin: 0; padding: 0; }
.steps li {
  position: relative;
  display: grid; grid-template-columns: 3.25rem 1fr; gap: 1.25rem;
  padding-bottom: 2.25rem;
}
.steps li:last-child { padding-bottom: 0; }
.steps li:not(:last-child)::before {
  content: ""; position: absolute; left: calc(1.625rem - 1px); top: 3.4rem; bottom: .3rem;
  width: 2px; background: var(--line);
}
.steps__n {
  width: 3.25rem; height: 3.25rem; border-radius: 50%;
  background: var(--slate); color: var(--amber);
  font: 800 1.7rem/3.25rem var(--display); text-align: center;
}
.steps h3 { margin: .45rem 0 .5rem; }
.steps p { color: var(--muted); max-width: 52ch; }

@media (max-width: 900px) {
  .process { grid-template-columns: 1fr; }
  .process .section__head { position: static; margin-bottom: 2rem; }
}

/* ---------- 13. Contact ---------- */
/* Full-width slate band: big call number and details left, form right */
.section--contact { background: var(--slate); color: #F3F4F1; }
.section--contact a:not(.btn) { color: var(--amber); }
.section--contact a:not(.btn):hover { color: #fff; }
.section--contact :focus-visible { outline-color: #fff; }
.contact {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.contact__info h2 { color: #fff; }
.contact__intro { margin-top: .9rem; color: var(--muted-on-dark); }
.section--contact .contact__call {
  display: inline-flex; flex-direction: column; margin: 1.75rem 0 2rem;
  color: #fff; text-decoration: none;
}
.contact__call span { font: 800 1.4rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase; color: var(--amber); }
.contact__call strong { font: 900 clamp(2.4rem, 4.4vw, 3.4rem)/1.05 var(--display); }
.section--contact .contact__call:hover strong { color: var(--amber); }

.kv { display: grid; grid-template-columns: 7rem minmax(0, 1fr); gap: .75rem 1rem; margin: 0; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.16); }
.kv dt { font-weight: 600; color: var(--muted-on-dark); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.contact__links { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.5rem; }
.contact__links .btn--ghost { border-color: rgba(255,255,255,.7); color: #fff; }
.contact__links .btn--ghost:hover { background: #fff; color: var(--slate); }

.contact__main { padding: clamp(1.5rem, 3vw, 2.5rem); background: var(--slab); color: var(--slate); border-radius: 4px; }
.contact__main a:not(.btn) { color: var(--blue); }
.contact__form-title { font-size: 2rem; }
.contact__form-note { margin: .6rem 0 1.5rem; color: var(--muted); }
.contact__main .quote { padding: 0; background: none; border: 0; }
.quote__actions { display: flex; flex-wrap: wrap; gap: .75rem; }

@media (max-width: 900px) {
  .contact { grid-template-columns: 1fr; }
}

.map-embed { margin-top: clamp(2rem, 5vw, 3rem); color: var(--slate); }
.section--contact .map-embed a:not(.btn) { color: var(--blue); }
.map-embed__title { font-size: 1.35rem; margin-bottom: 1rem; }
.map-embed .fine { margin-top: .8rem; }
.map-embed__fallback { color: var(--error); font-weight: 600; }
#contact-map {
  height: 320px;
  width: 100%;
  background: #E5E7E3;
  border: 1px solid var(--line);
  isolation: isolate; /* keep Leaflet's own z-index stack below the sticky header */
}
#contact-map .leaflet-control-attribution { font-size: .7rem; }
#contact-map iframe { display: block; width: 100%; height: 100%; border: 0; }

@media (max-width: 700px) {
  #contact-map { height: 260px; }
}

/* ---------- 14. Footer ---------- */
.site-footer { background: var(--slate); color: var(--muted-on-dark); padding-block: 3rem 2.25rem; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 2rem; }
.footer__logos { display: flex; align-items: flex-end; gap: 1.25rem; margin-bottom: 1rem; }
.footer__logos img { height: 46px; width: auto; }
.footer__logos img:last-child { height: 40px; }
.footer__brand { font: 800 1.9rem/1 var(--display); color: #fff; }
.footer__text { margin-top: .6rem; max-width: 36ch; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, auto); gap: .5rem 2rem; justify-content: start; }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { color: var(--amber); text-decoration: underline; }
.footer__legal { grid-column: 1 / -1; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.16); font-size: .9rem; }

@media (max-width: 720px) {
  .footer__grid { grid-template-columns: 1fr; }
}

/* ---------- 15. Toast and mobile action bar ---------- */
.toast {
  position: fixed; left: 50%; bottom: 1.5rem; z-index: 90;
  max-width: min(92vw, 30rem);
  padding: .85rem 1.2rem; border-radius: 4px;
  background: var(--slate); color: #fff; font-weight: 600; font-size: .95rem;
  box-shadow: 0 10px 30px -10px rgba(0,0,0,.5);
  transform: translate(-50%, 1rem); opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

.mobile-bar { display: none; }
@media (max-width: 720px) {
  body { padding-bottom: 5rem; }
  .mobile-bar {
    display: grid; grid-template-columns: 1fr 1fr; gap: .6rem;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    padding: .6rem .75rem calc(.6rem + env(safe-area-inset-bottom, 0px));
    background: var(--slab); border-top: 1px solid var(--line);
  }
  .toast { bottom: 5.5rem; }
}

/* ---------- 16. Batching plant illustration (How ordering works) ---------- */
.plant { margin: 2rem 0 0; }
.plant svg { width: 100%; height: auto; }
.plant figcaption { margin-top: .6rem; font-size: .88rem; color: var(--muted); max-width: 40ch; }
.p-ground { stroke: var(--line); stroke-width: 2; }
.p-line { fill: none; stroke: var(--slate); stroke-width: 2; stroke-linecap: round; }
.p-steel { fill: #C8CFCA; stroke: var(--slate); stroke-width: 2; stroke-linejoin: round; }
.p-silo { fill: var(--slab); stroke: var(--slate); stroke-width: 2; stroke-linejoin: round; }
.p-tower { fill: #DCE0DC; stroke: var(--slate); stroke-width: 2; }
.p-band { fill: var(--amber); }
.p-agg { fill: #8C99A1; }
.p-frame { stroke: var(--slate); stroke-width: 7; stroke-linecap: round; }
.p-frame--thin { stroke-width: 5; }
.p-chassis { fill: var(--slate-2); }
.p-drum { fill: #C9D0D4; stroke: var(--slate); stroke-width: 2; }
.p-spin { fill: #F3F4F1; }
.p-cab { fill: var(--amber); stroke: var(--slate); stroke-width: 2; }
.p-window { fill: #A9C4D2; stroke: var(--slate); stroke-width: 1.5; }
.p-wheel { fill: #141E25; stroke: #8D989F; stroke-width: 3; }
.p-lamp { fill: var(--amber); }

/* material moving along the belts and screws */
.p-flow { stroke: #5B6870; stroke-width: 4; stroke-linecap: round; stroke-dasharray: 1 9; animation: p-move 1.1s linear infinite; }
.p-flow--cement { stroke: #9AA4A0; stroke-width: 3; stroke-dasharray: 1 4; animation-duration: .9s; }
.p-flow--pour { stroke: #8C99A1; stroke-width: 6; stroke-dasharray: 3 2; animation-duration: .5s; }
.p-spin { animation: p-drum 2.4s linear infinite; }
.p-lamp { animation: p-blink 1.6s steps(2, jump-none) infinite; }
@keyframes p-move { to { stroke-dashoffset: -10; } }
@keyframes p-drum { to { transform: translateX(20px); } }
@keyframes p-blink { 50% { opacity: .25; } }
@media (prefers-reduced-motion: reduce) {
  .p-flow, .p-spin, .p-lamp { animation: none; }
}