/* ==========================================================================
   SystemAir by Enviro — theme stylesheet  v2  "Precision Engineering"
   Brand palette (navy #0F2A4F / amber #E89B2B) preserved from the locked
   design system; elevated with a distinctive display face, technical mono
   labels, blueprint + thermal textures, depth, glass, and motion hooks.
   ========================================================================== */

:root {
  /* Brand — navy */
  --navy-950: #08182F;
  --navy-900: #0F2A4F;   /* primary */
  --navy-800: #16375f;
  --navy-700: #1F3864;
  --navy-600: #2A4675;

  /* Brand — amber accent (single accent) */
  --amber-400: #F2B24E;
  --amber-500: #E89B2B;  /* canonical */
  --amber-600: #C9821E;

  --teal-400: #4FB0D8;   /* the SystemAir swirl blue — used sparingly */
  --teal-500: #2E75B6;

  /* Neutrals */
  --white: #FFFFFF;
  --paper: #F6F8FB;
  --grey-50: #F8FAFC;
  --grey-100: #EEF2F7;
  --grey-200: #DDE4EE;
  --grey-300: #C4CEDC;
  --grey-400: #97A3B6;
  --grey-500: #6B7689;
  --grey-600: #4A5469;
  --grey-700: #2F3849;
  --ink: #12203A;
  --text-faint: #97A3B6;
  --amber-100: #FBEFD9;

  /* Semantic */
  --text-body: var(--ink);
  --text-muted: var(--grey-500);
  --text-on-dark: #EAF1FA;
  --text-on-dark-muted: rgba(224, 233, 245, 0.66);
  --line: rgba(15,42,79,.10);
  --line-dark: rgba(255,255,255,.12);

  /* Fonts — INTER ONLY across the entire site. No monospace / coding-style font
     anywhere (hard rule). --font-mono is aliased to Inter so every label that
     used it renders in Inter, never a coding typeface. */
  --font-display: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Layout */
  --container: 1240px;
  --gutter: clamp(20px, 5vw, 56px);
  --radius: 18px;
  --radius-sm: 12px;

  /* Depth */
  --shadow-sm: 0 1px 2px rgba(8,24,47,.06), 0 6px 20px rgba(8,24,47,.07);
  --shadow-md: 0 8px 24px rgba(8,24,47,.10), 0 24px 60px rgba(8,24,47,.14);
  --shadow-amber: 0 14px 40px rgba(232,155,43,.28);
  --glow-teal: 0 0 80px rgba(79,176,216,.28);

  /* Textures */
  --blueprint:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  --grad-hero:
    radial-gradient(60% 55% at 78% 18%, rgba(79,176,216,.20) 0%, rgba(79,176,216,0) 55%),
    radial-gradient(50% 50% at 8% 92%, rgba(232,155,43,.16) 0%, rgba(232,155,43,0) 55%),
    linear-gradient(160deg, #0B2144 0%, #0F2A4F 46%, #0a1f3d 100%);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text-body);
  background: var(--white);
  line-height: 1.62;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.08; letter-spacing: -0.025em; margin: 0 0 .45em; font-weight: 800; }
p { margin: 0 0 1em; }
/* HARD RULE: Inter everywhere — never a monospace / coding-style typeface. */
body, input, select, textarea, button, code, kbd, pre, samp, tt { font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif !important; }
::selection { background: var(--amber-500); color: var(--navy-900); }

.container { max-width: var(--container); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(64px, 9vw, 128px); position: relative; }
.section--tight { padding-block: clamp(44px, 6vw, 80px); }

/* Technical eyebrow label */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 12.5px; font-weight: 600; letter-spacing: .18em;
  text-transform: uppercase; color: var(--amber-600); margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 26px; height: 1.5px; background: var(--amber-500); display: inline-block; }
.on-dark .eyebrow, .eyebrow.light { color: var(--amber-400); }

.section-head { max-width: 760px; margin-bottom: clamp(34px, 5vw, 60px); }
.section-head h2 { font-size: clamp(30px, 4.6vw, 52px); }
.section-head p { font-size: clamp(17px, 1.5vw, 20px); color: var(--text-muted); margin-bottom: 0; }
.on-dark .section-head p { color: var(--text-on-dark-muted); }

/* ---------- Buttons ---------- */
.btn {
  --b: transparent;
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-body); font-weight: 600; font-size: 15.5px; line-height: 1;
  padding: 16px 26px; border-radius: 999px; border: 1.5px solid var(--b);
  cursor: pointer; transition: transform .18s cubic-bezier(.2,.8,.2,1), background .18s, box-shadow .18s, color .18s;
  will-change: transform;
}
.btn svg { width: 18px; height: 18px; }
.btn--amber { background: var(--amber-500); color: var(--navy-950); }
.btn--amber:hover { background: var(--amber-400); transform: translateY(-3px); box-shadow: var(--shadow-amber); }
.btn--ghost { background: transparent; color: var(--text-on-dark); --b: rgba(255,255,255,.34); }
.btn--ghost:hover { --b: #fff; background: rgba(255,255,255,.07); transform: translateY(-3px); }
.btn--navy { background: var(--navy-900); color: #fff; }
.btn--navy:hover { background: var(--navy-800); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.btn--light { background: #fff; color: var(--navy-900); }
.btn--light:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 60;
  transition: background .3s ease, box-shadow .3s ease, backdrop-filter .3s;
}
.site-header.is-scrolled {
  background: rgba(255,255,255,.86); backdrop-filter: saturate(160%) blur(14px);
  box-shadow: 0 1px 0 var(--line), 0 10px 30px rgba(8,24,47,.07);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 84px; transition: height .3s; }
.is-scrolled .header-inner { height: 70px; }
.brand-logo { height: 40px; width: auto; transition: height .3s; }
.is-scrolled .brand-logo { height: 34px; }
/* logo starts white on dark hero, flips to navy once header gets a light bg */
.brand-logo { filter: brightness(0) invert(1); }
.is-scrolled .brand-logo { filter: none; }

.nav { display: flex; align-items: center; gap: 30px; }
.nav > a, .nav .has-sub > a { font-size: 15px; font-weight: 500; color: var(--text-on-dark); position: relative; padding: 8px 0; transition: color .2s; }
.is-scrolled .nav > a, .is-scrolled .nav .has-sub > a { color: var(--grey-700); }
.nav > a::after, .has-sub > a::after { content: ""; position: absolute; left: 0; bottom: 2px; height: 2px; width: 0; background: var(--amber-500); transition: width .25s cubic-bezier(.2,.8,.2,1); }
.nav > a:hover::after, .has-sub:hover > a::after { width: 100%; }

/* Dropdown menus */
.has-sub { position: relative; }
.has-sub > a { display: inline-flex; align-items: center; gap: 5px; cursor: pointer; }
.has-sub > a .chev { width: 13px; height: 13px; transition: transform .25s; }
.has-sub:hover > a .chev { transform: rotate(180deg); }
.submenu {
  position: absolute; top: calc(100% + 2px); left: -14px; min-width: 250px; padding: 10px;
  background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity .2s, transform .2s, visibility .2s; z-index: 70;
}
.has-sub:hover .submenu { opacity: 1; visibility: visible; transform: translateY(0); }
.submenu a { display: block; padding: 11px 13px; border-radius: 10px; font-size: 14.5px; font-weight: 500; color: var(--grey-700); }
.submenu a::after { display: none; }
.submenu a:hover { background: var(--grey-50); color: var(--navy-900); }
.submenu a small { display: block; font-size: 12px; font-weight: 400; color: var(--text-muted); margin-top: 2px; }
.header-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 10px; z-index: 61; }
.nav-toggle span { display: block; width: 26px; height: 2px; background: currentColor; color: #fff; margin: 6px 0; transition: .3s; border-radius: 2px; }
.is-scrolled .nav-toggle span { background: var(--navy-900); }

/* ---------- Hero ---------- */
.hero {
  position: relative; display: flex; align-items: center;
  background: var(--grad-hero); color: var(--text-on-dark); overflow: hidden;
  padding-block: clamp(128px, 15vh, 168px) clamp(64px, 8vh, 96px);
}
.hero::before { /* blueprint grid */
  content: ""; position: absolute; inset: 0; background-image: var(--blueprint);
  background-size: 46px 46px; mask-image: radial-gradient(120% 100% at 70% 30%, #000 30%, transparent 78%);
  opacity: .7; pointer-events: none;
}
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.06fr .94fr; gap: clamp(24px, 4vw, 56px); align-items: center; width: 100%; }
.hero-pill {
  display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-mono);
  font-size: 12px; font-weight: 500; letter-spacing: .06em; text-transform: uppercase;
  padding: 9px 15px; border-radius: 999px; border: 1px solid var(--line-dark);
  background: rgba(255,255,255,.045); color: var(--text-on-dark); margin-bottom: 26px;
}
.hero-pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--amber-500); box-shadow: 0 0 0 0 rgba(232,155,43,.7); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(232,155,43,.6)} 70%{box-shadow:0 0 0 9px rgba(232,155,43,0)} 100%{box-shadow:0 0 0 0 rgba(232,155,43,0)} }

.hero h1 { font-size: clamp(38px, 5.2vw, 64px); font-weight: 800; letter-spacing: -.03em; line-height: 1.04; margin-bottom: 26px; }
.hero h1 .accent { color: var(--amber-500); }
.hero h1 .line { display: block; overflow: hidden; padding-bottom: .04em; }
.hero h1 .line-i { display: block; }
.hero-sub { font-size: clamp(17px, 1.6vw, 20px); color: var(--text-on-dark-muted); max-width: 42ch; margin-bottom: 34px; }
.hero-toggle { display: inline-flex; gap: 4px; padding: 4px; border: 1px solid var(--line-dark); border-radius: 999px; background: rgba(255,255,255,.05); margin-bottom: 26px; font-family: var(--font-mono); font-size: 11.5px; }
.hero-toggle button { border: 0; background: transparent; color: var(--text-on-dark-muted); padding: 9px 16px; border-radius: 999px; cursor: pointer; letter-spacing: .03em; transition: background .2s, color .2s; white-space: nowrap; }
.hero-toggle button.on { background: var(--amber-500); color: var(--navy-950); font-weight: 600; }
.hero-toggle-hint { font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em; color: var(--text-on-dark-muted); margin: -14px 0 24px; opacity: .8; }
.callout b { transition: color .2s; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 14px 26px; font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .02em; color: var(--text-on-dark-muted); }
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust svg { width: 15px; height: 15px; color: var(--amber-500); }

/* Hero visual — floating unit + swirl + data callouts */
.hero-visual { position: relative; display: grid; place-items: center; min-height: 480px; }
/* cinematic spotlight + rising cool mist behind the unit — NO decorative circles */
.hero-spot { position: absolute; z-index: 0; width: 118%; height: 116%; top: -8%;
  background: radial-gradient(50% 42% at 50% 40%, rgba(140,195,230,.30), rgba(79,176,216,.05) 42%, transparent 68%); filter: blur(8px); }
.hero-mist { position: absolute; z-index: 1; left: 50%; bottom: 4%; width: 66%; height: 60%; transform: translateX(-50%); pointer-events: none;
  background: radial-gradient(58% 78% at 50% 100%, rgba(150,205,235,.32), transparent 72%); filter: blur(24px); opacity: .85; }
.hero-floor { position: absolute; z-index: 1; bottom: 3%; left: 50%; width: 70%; height: 40px; transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(0,0,0,.5), transparent 72%); filter: blur(8px); }
.hero-unit { position: relative; z-index: 2; width: auto; height: clamp(360px, 52vh, 480px); filter: drop-shadow(0 50px 70px rgba(0,0,0,.55)); will-change: transform; }
.hero-sweep { position: absolute; z-index: 3; inset: 0; overflow: hidden; pointer-events: none; }
.hero-sweep i { position: absolute; top: -20%; left: -60%; width: 42%; height: 140%; transform: skewX(-16deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.16), transparent); filter: blur(5px); }
/* optional full-bleed cinematic background video (drop in a Higgsfield clip) */
.hero-bg-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; opacity: .55; }
.hero.has-video::before { opacity: .3; }
.hero-veil { position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(115deg, rgba(8,24,47,.9) 0%, rgba(8,24,47,.6) 42%, rgba(8,24,47,.32) 100%); display: none; }
.hero.has-video .hero-veil { display: block; }
/* Image-background hero (real project photo) */
.hero.has-bg { min-height: 88vh; }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
.hero.has-bg::before { opacity: .22; }
.hero.has-bg .hero-veil { display: block;
  background: linear-gradient(102deg, rgba(8,24,47,.95) 0%, rgba(8,24,47,.85) 36%, rgba(8,24,47,.55) 70%, rgba(8,24,47,.38) 100%); }
.hero-inner { position: relative; z-index: 2; width: 100%; }
.hero.has-bg .hero-copy { max-width: 700px; }
.callout {
  position: absolute; z-index: 3; font-family: var(--font-mono); font-size: 12px; letter-spacing: .02em;
  background: rgba(9,24,47,.72); border: 1px solid var(--line-dark); backdrop-filter: blur(6px);
  border-radius: 10px; padding: 9px 13px; color: #fff; box-shadow: 0 10px 30px rgba(0,0,0,.3);
}
.callout b { color: var(--amber-500); font-weight: 700; font-size: 15px; }
.callout .k { color: var(--text-on-dark-muted); display: block; font-size: 10.5px; }
.callout.c1 { top: 8%; left: -4%; }
.callout.c2 { bottom: 14%; right: -2%; }
.callout.c3 { bottom: 40%; left: -8%; }

.hero-scroll { position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 3; font-family: var(--font-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--text-on-dark-muted); display: flex; flex-direction: column; align-items: center; gap: 8px; }
.hero-scroll .bar { width: 1px; height: 34px; background: linear-gradient(var(--amber-500), transparent); }

/* ---------- Marquee ticker ---------- */
.ticker { background: var(--navy-950); color: var(--text-on-dark-muted); border-block: 1px solid var(--line-dark); overflow: hidden; }
.ticker-track { display: flex; gap: 48px; padding: 16px 0; white-space: nowrap; font-family: var(--font-mono); font-size: 13px; letter-spacing: .06em; text-transform: uppercase; animation: marquee 32s linear infinite; }
.ticker-track span { display: inline-flex; align-items: center; gap: 12px; }
.ticker-track span::before { content: "◆"; color: var(--amber-500); font-size: 9px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Cards / grids ---------- */
.cols { display: grid; gap: 22px; }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px; overflow: hidden; height: 100%;
  transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s, border-color .3s;
}
.card::after { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: linear-gradient(90deg, var(--amber-500), var(--amber-400)); transform: scaleX(0); transform-origin: left; transition: transform .35s cubic-bezier(.2,.8,.2,1); }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.card:hover::after { transform: scaleX(1); }
.card .ic { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(150deg, var(--navy-900), var(--navy-700)); color: var(--amber-500); margin-bottom: 22px; }
.card .ic svg { width: 26px; height: 26px; }
.card .idx { position: absolute; top: 26px; right: 28px; font-family: var(--font-mono); font-size: 12px; color: var(--grey-300); letter-spacing: .1em; }
.card h3 { font-size: 22px; margin-bottom: 10px; letter-spacing: -.01em; }
.card p { color: var(--text-muted); font-size: 15.5px; margin-bottom: 18px; }
.card .more { font-family: var(--font-mono); font-weight: 500; font-size: 12.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--navy-900); display: inline-flex; gap: 8px; align-items: center; }
.card .more svg { width: 15px; height: 15px; color: var(--amber-500); transition: transform .2s; }
.card:hover .more svg { transform: translateX(5px); }

/* Product card */
.pcard { padding: 0; }
.pcard .pimg { aspect-ratio: 5/4; background: #fff; display: grid; place-items: center; position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.pcard .pimg img { position: relative; width: 82%; height: 84%; object-fit: contain; transition: transform .4s cubic-bezier(.2,.8,.2,1); }
.pcard:hover .pimg img { transform: scale(1.04); }
.pcard .ptag { position: absolute; top: 14px; left: 14px; z-index: 3; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; background: var(--navy-900); color: #fff; padding: 6px 12px; border-radius: 999px; white-space: nowrap; }

/* calculator readout (area / volume) + layout stability */
.calc-readout { min-height: 20px; margin-top: 14px; font-size: 13.5px; color: var(--grey-600); font-weight: 500; }
.calc-readout b { color: var(--navy-900); font-weight: 800; }
[data-fields="dims"], [data-fields="area"] { min-height: 74px; }

/* lead-modal: two-screen (calculator gate → form) */
.modal-screen { display: none; }
.modal-screen.active { display: block; }
.gate-actions { display: grid; gap: 10px; margin-top: 20px; }
.gate-actions .btn { width: 100%; justify-content: center; }
.field-other { margin-top: 10px; }
.field-other[hidden] { display: none; }
.pcard .pbody { padding: 24px 26px 28px; }
.pcard h3 { font-size: 20px; margin-bottom: 4px; }
.pcard .pcap { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.chip { font-family: var(--font-mono); font-size: 12px; font-weight: 500; padding: 6px 11px; border-radius: 8px; background: var(--grey-100); color: var(--grey-700); }
.chip.amber { background: var(--amber-500); color: var(--navy-950); }

/* ---------- Industries ---------- */
.ind-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.ind { padding: 30px 18px; text-align: center; background: #fff; transition: .3s; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.ind:hover { background: var(--navy-900); color: #fff; }
.ind .ic { display: grid; place-items: center; margin: 0 auto 14px; color: var(--navy-900); transition: color .3s; }
.ind:hover .ic { color: var(--amber-500); }
.ind .ic svg { width: 30px; height: 30px; }
.ind .nm { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .04em; text-transform: uppercase; }

/* ---------- Split compare (copper vs copper-free) ---------- */
.compare { background: var(--navy-900); color: var(--text-on-dark); position: relative; overflow: hidden; }
.compare::before { content:""; position:absolute; inset:0; background-image: var(--blueprint); background-size: 46px 46px; opacity:.5; }
.compare .inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.cmp {
  border: 1px solid var(--line-dark); border-radius: var(--radius); padding: 34px; background: rgba(255,255,255,.03); backdrop-filter: blur(4px);
}
.cmp.win { border-color: var(--amber-500); background: linear-gradient(150deg, rgba(232,155,43,.14), rgba(232,155,43,.02)); box-shadow: var(--shadow-amber); }
.cmp .tag { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-on-dark-muted); }
.cmp.win .tag { color: var(--amber-500); }
.cmp .big { font-family: var(--font-display); font-size: clamp(52px, 8vw, 92px); font-weight: 800; line-height: 1; margin: 14px 0 6px; }
.cmp.win .big { color: var(--amber-500); }
.cmp .unit { font-size: 15px; color: var(--text-on-dark-muted); }
.cmp ul { list-style: none; padding: 0; margin: 22px 0 0; }
.cmp li { display: flex; gap: 10px; padding: 9px 0; border-top: 1px solid var(--line-dark); font-size: 15px; }
.cmp li svg { width: 17px; height: 17px; flex: none; margin-top: 3px; color: var(--amber-500); }

/* ---------- Counters ---------- */
.counters { background: var(--navy-950); color: #fff; }
.counter { text-align: center; padding: 14px; position: relative; }
.counter + .counter::before { content:""; position:absolute; left:0; top:20%; height:60%; width:1px; background: var(--line-dark); }
.counter .num { font-family: var(--font-display); font-size: clamp(42px, 6vw, 68px); font-weight: 800; letter-spacing: -.03em; color: var(--amber-500); line-height: 1; }
.counter .lbl { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-on-dark-muted); margin-top: 12px; }

/* ---------- Case studies ---------- */
.case { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 400px; display: flex; align-items: flex-end; color: #fff; background: var(--navy-800); }
.case .cphoto { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .55s cubic-bezier(.2,.8,.2,1); }
.case:hover .cphoto { transform: scale(1.06); }
.case .bg { position: absolute; inset: 0; z-index: 1; background: linear-gradient(to top, rgba(8,24,47,.95) 8%, rgba(8,24,47,.55) 44%, rgba(8,24,47,.12) 100%); }
.case .cbody { position: relative; z-index: 2; padding: 28px; width: 100%; }
.case .cmeta { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--amber-400); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.case .cmeta svg { width: 15px; height: 15px; flex: none; color: #fff; opacity: .5; }
.case h3 { font-size: 23px; margin-bottom: 16px; }
.case .cstats { display: flex; gap: 22px; padding-top: 16px; border-top: 1px solid var(--line-dark); }
.case .cstats .n { font-family: var(--font-display); font-weight: 800; font-size: 22px; color: #fff; }
.case .cstats .l { font-family: var(--font-mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-on-dark-muted); }

/* ---------- Sizing calculator ---------- */
.calc { background: linear-gradient(150deg, #fff, var(--paper)); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(26px, 4vw, 44px); box-shadow: var(--shadow-md); display: grid; grid-template-columns: 1fr .9fr; gap: clamp(26px,4vw,48px); align-items: center; }
.calc-fields label { display: block; font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--grey-600); margin: 18px 0 8px; }
.calc-fields input, .calc-fields select { width: 100%; padding: 14px 16px; border: 1.5px solid var(--line); border-radius: 12px; font-family: var(--font-body); font-size: 16px; color: var(--ink); background: #fff; transition: border-color .2s, box-shadow .2s; }
.calc-fields input:focus, .calc-fields select:focus { outline: none; border-color: var(--amber-500); box-shadow: 0 0 0 4px rgba(232,155,43,.14); }
.calc-out { background: var(--navy-900); color: #fff; border-radius: var(--radius); padding: 34px; text-align: center; position: relative; overflow: hidden; }
.calc-out::before { content:""; position:absolute; inset:0; background-image: var(--blueprint); background-size: 30px 30px; opacity:.5; }
.calc-out .rel { position: relative; z-index: 2; }
.calc-out .hp { font-family: var(--font-display); font-size: clamp(56px, 9vw, 88px); font-weight: 800; color: var(--amber-500); line-height: 1; }
.calc-out .hp small { font-size: 24px; }
.calc-out .cap { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-on-dark-muted); }
.calc-out .save { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line-dark); font-size: 15px; color: var(--text-on-dark); }
.calc-out .save b { color: var(--amber-500); }

/* toggles + grouped fields */
.calc-toggle { display: inline-flex; gap: 3px; padding: 3px; border: 1.5px solid var(--line); border-radius: 999px; background: var(--grey-50); margin: 4px 10px 4px 0; }
.calc-toggle button { border: 0; background: transparent; color: var(--grey-600); font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .04em; text-transform: uppercase; padding: 8px 15px; border-radius: 999px; cursor: pointer; transition: .2s; }
.calc-toggle button.on { background: var(--navy-900); color: #fff; }
.calc-toggles { display: flex; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.calc-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.calc-row3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
[data-fields][hidden] { display: none; }

/* comparison block inside the navy result */
.calc-cmp { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; text-align: left; }
.cc { border: 1px solid var(--line-dark); border-radius: 12px; padding: 16px; background: rgba(255,255,255,.03); }
.cc.win { border-color: var(--amber-500); background: linear-gradient(150deg, rgba(232,155,43,.14), rgba(232,155,43,.02)); }
.cc-t { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .05em; text-transform: uppercase; color: var(--text-on-dark-muted); margin-bottom: 10px; line-height: 1.3; min-height: 2.6em; }
.cc.win .cc-t { color: var(--amber-500); }
.cc-hp { font-family: var(--font-display); font-weight: 800; font-size: 26px; line-height: 1; }
.cc.win .cc-hp { color: var(--amber-500); }
.cc-kw { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-on-dark-muted); margin: 3px 0 12px; }
.cc-rm { font-family: var(--font-display); font-weight: 800; font-size: 20px; font-variant-numeric: tabular-nums; }
.cc-l { font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-on-dark-muted); }
.calc-out .btn { margin-top: 22px; }
@media (max-width: 560px) { .calc-row3 { grid-template-columns: 1fr; } .calc-cmp { grid-template-columns: 1fr; } .cc-t { min-height: 0; } }

/* ---------- Trust strip ---------- */
.trust-strip { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 20px 44px; }
.trust-strip .logo { font-family: var(--font-mono); font-weight: 500; color: var(--grey-400); font-size: 15px; letter-spacing: .04em; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; background: linear-gradient(140deg, var(--amber-500), var(--amber-600)); color: var(--navy-950); border-radius: calc(var(--radius) + 6px); padding: clamp(40px, 6vw, 72px); text-align: center; overflow: hidden; }
.cta-band::before { content:""; position:absolute; inset:0; background-image: linear-gradient(rgba(255,255,255,.14) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.14) 1px, transparent 1px); background-size: 40px 40px; mask-image: radial-gradient(80% 80% at 50% 0%, #000, transparent 75%); }
.cta-band .rel { position: relative; z-index: 2; }
.cta-band h2 { font-size: clamp(30px, 4.4vw, 50px); margin-bottom: 12px; }
.cta-band p { font-size: 18px; max-width: 56ch; margin: 0 auto 28px; color: #5a3d0e; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-950); color: var(--text-on-dark-muted); padding-block: 72px 32px; font-size: 15px; position: relative; overflow: hidden; }
.site-footer::before { content:""; position:absolute; inset:0; background-image: var(--blueprint); background-size: 46px 46px; opacity:.4; }
.footer-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.1fr; gap: 34px; margin-bottom: 48px; }
.footer-logo { height: 40px; filter: brightness(0) invert(1); margin-bottom: 18px; }
.site-footer h4 { font-family: var(--font-mono); color: #fff; font-size: 12px; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 18px; }
.site-footer a { color: var(--text-on-dark-muted); display: block; padding: 6px 0; transition: color .2s, transform .2s; }
.site-footer a:hover { color: var(--amber-500); transform: translateX(3px); }
.footer-brand p { max-width: 36ch; }
.footer-bottom { position: relative; z-index: 2; border-top: 1px solid var(--line-dark); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 12.5px; letter-spacing: .01em; color: var(--text-on-dark-muted); }
.footer-legal a { color: var(--text-on-dark-muted); display: inline; padding: 0; }
.footer-legal a:hover { color: var(--amber-500); }

/* ---------- Scroll progress ---------- */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, var(--amber-500), var(--amber-400)); z-index: 70; }

/* ---------- Floating WhatsApp widget (pill + greeting bubble) ---------- */
.wa-widget { position: fixed; right: 22px; bottom: 40px; z-index: 80; display: flex; flex-direction: column; align-items: flex-end; gap: 12px; }
.wa-bubble { position: relative; max-width: 250px; background: #fff; color: var(--ink); border-radius: 16px 16px 4px 16px; padding: 14px 38px 14px 16px; font-size: 14px; line-height: 1.45; box-shadow: var(--shadow-md); border: 1px solid var(--line); transform-origin: bottom right; animation: waPop .4s cubic-bezier(.2,.8,.2,1) both; }
.wa-bubble b { color: var(--navy-900); }
.wa-bubble .wa-bclose { position: absolute; top: 8px; right: 8px; width: 20px; height: 20px; border: 0; background: var(--grey-100); border-radius: 50%; cursor: pointer; color: var(--grey-600); font-size: 13px; line-height: 1; display: grid; place-items: center; }
.wa-bubble.hide { display: none; }
@keyframes waPop { from { opacity: 0; transform: scale(.8) translateY(8px); } to { opacity: 1; transform: none; } }
.wa-fab { position: relative; display: inline-flex; align-items: center; gap: 10px; height: 56px; padding: 0 22px 0 18px; border-radius: 999px; background: #25D366; color: #fff; font-weight: 700; font-size: 15.5px; box-shadow: 0 10px 30px rgba(37,211,102,.42); transition: transform .2s, box-shadow .2s; }
.wa-fab::before { content: ""; position: absolute; left: 8px; width: 40px; height: 40px; border-radius: 50%; box-shadow: 0 0 0 0 rgba(37,211,102,.5); animation: waPulse 2.6s infinite; }
@keyframes waPulse { 0% { box-shadow: 0 0 0 0 rgba(37,211,102,.45); } 70% { box-shadow: 0 0 0 14px rgba(37,211,102,0); } 100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); } }
.wa-fab:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(37,211,102,.5); }
.wa-fab svg { width: 26px; height: 26px; color: #fff; position: relative; }
@media (max-width: 560px) { .wa-fab span { display: none; } .wa-fab { padding: 0; width: 56px; justify-content: center; } .wa-fab::before { left: 8px; } .wa-bubble { max-width: 210px; } }

/* ---------- Lead-capture modal ---------- */
.modal-overlay { position: fixed; inset: 0; z-index: 95; background: rgba(8,24,47,.62); backdrop-filter: blur(5px); display: none; overflow-y: auto; -webkit-overflow-scrolling: touch; opacity: 0; transition: opacity .2s; }
.modal-overlay.open { display: block; opacity: 1; }
.modal { background: #fff; border-radius: 22px; max-width: 480px; width: calc(100% - 32px); margin: clamp(24px, 6vh, 64px) auto; padding: clamp(26px, 4vw, 38px); position: relative; box-shadow: var(--shadow-md); transform: translateY(12px); transition: transform .25s cubic-bezier(.2,.8,.2,1); }
.modal-overlay.open .modal { transform: none; }
/* wide variant — hosts the Cooling Calculator pop-up (contact page) */
.modal--calc { max-width: 1040px; }
.modal--calc .calc { box-shadow: none; border: 0; padding: 0; background: none; margin-top: 6px; }
.modal-close { position: absolute; top: 15px; right: 15px; width: 36px; height: 36px; border: 0; background: var(--grey-100); border-radius: 50%; cursor: pointer; display: grid; place-items: center; color: var(--grey-600); transition: .2s; }
.modal-close:hover { background: var(--grey-200); color: var(--navy-900); }
.modal .eyebrow { margin-bottom: 10px; }
.modal h3 { font-size: 24px; margin-bottom: 6px; }
.modal .modal-sub { color: var(--text-muted); font-size: 15px; margin-bottom: 20px; }
.modal .field { margin-bottom: 14px; }
.modal label { display: block; font-size: 13px; font-weight: 600; color: var(--grey-700); margin-bottom: 6px; }
.modal input, .modal select, .modal textarea { width: 100%; padding: 13px 15px; border: 1.5px solid var(--line); border-radius: 11px; font-family: var(--font-body); font-size: 15.5px; color: var(--ink); background: #fff; transition: border-color .2s, box-shadow .2s; }
.modal input:focus, .modal select:focus, .modal textarea:focus { outline: none; border-color: var(--amber-500); box-shadow: 0 0 0 4px rgba(232,155,43,.14); }
.modal .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modal .btn { width: 100%; justify-content: center; margin-top: 8px; }
.modal .modal-fine { font-size: 12px; color: var(--text-faint); text-align: center; margin: 12px 0 0; }

/* ---------- Range slider (calculator hours) ---------- */
.rangewrap { display: flex; align-items: center; gap: 14px; }
.rangewrap input[type=range] { -webkit-appearance: none; appearance: none; background: transparent; flex: 1; height: 24px; cursor: pointer; }
.rangewrap input[type=range]::-webkit-slider-runnable-track { height: 4px; border-radius: 999px; background: var(--grey-200); }
.rangewrap input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; margin-top: -9px; width: 22px; height: 22px; border-radius: 50%; background: var(--amber-500); box-shadow: 0 2px 8px rgba(232,155,43,.5); border: 3px solid #fff; }
.rangewrap input[type=range]::-moz-range-track { height: 4px; border-radius: 999px; background: var(--grey-200); }
.rangewrap input[type=range]::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: var(--amber-500); border: 3px solid #fff; box-shadow: 0 2px 8px rgba(232,155,43,.5); }
.rangewrap .rangeval { min-width: 62px; text-align: center; font-weight: 800; font-size: 16px; color: var(--navy-900); background: var(--grey-100); border-radius: 9px; padding: 8px 6px; }

/* ---------- Reveal (JS-driven; safe default visible) ---------- */
.reveal { opacity: 0; transform: translateY(26px); }
.reveal.in { opacity: 1; transform: none; transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); }

/* ---------- Responsive ---------- */
/* ---------- Archive filter bar ---------- */
.filterbar { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 36px; }
.filterbar button { border: 1.5px solid var(--line); background: #fff; color: var(--grey-700); font-weight: 600; font-size: 14px; padding: 9px 18px; border-radius: 999px; cursor: pointer; transition: border-color .2s, background .2s, color .2s; }
.filterbar button:hover { border-color: var(--amber-500); }
.filterbar button.on { background: var(--navy-900); color: #fff; border-color: var(--navy-900); }

/* ---------- Simple page hero (legal / inner pages) ---------- */
.page-hero { background: var(--grad-hero); color: #fff; padding: clamp(130px,16vh,168px) 0 clamp(48px,7vh,72px); position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; background-image: var(--blueprint); background-size: 46px 46px; opacity: .5; mask-image: radial-gradient(120% 100% at 70% 20%, #000 30%, transparent 80%); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(30px,4.4vw,48px); margin: 0; }
.page-hero .updated { color: var(--text-on-dark-muted); font-size: 14px; margin-top: 12px; }
.legal { max-width: 820px; margin: 0 auto; }
.legal .lead { font-size: 18px; color: var(--text-body); }
.legal h2 { font-size: 22px; margin: 36px 0 10px; }
.legal h3 { font-size: 17px; margin: 22px 0 8px; }
.legal p, .legal li { color: var(--grey-700); font-size: 16px; line-height: 1.72; }
.legal ul { padding-left: 20px; margin: 0 0 1em; }
.legal a { color: var(--amber-600); text-decoration: underline; }
.legal .note { background: var(--amber-100); border: 1px solid var(--amber-500); border-radius: 12px; padding: 14px 18px; font-size: 14.5px; color: #5a3d0e; margin-bottom: 28px; }

/* ---------- Pillar page: hero / breadcrumb / compare table / FAQ ---------- */
.hero--pillar { min-height: 84vh; }
.hero--pillar .hero-bg-video { opacity: .5; }
.crumb { font-size: 13px; color: var(--text-on-dark-muted); margin-bottom: 22px; letter-spacing: .02em; }
.crumb a { color: var(--text-on-dark-muted); }
.crumb a:hover { color: var(--amber-500); }
.crumb span { margin: 0 8px; opacity: .5; }
.cmp-table { width: 100%; border-collapse: collapse; min-width: 580px; }
.cmp-table th, .cmp-table td { text-align: left; padding: 16px 18px; border-bottom: 1px solid var(--line-dark); font-size: 15.5px; }
.cmp-table thead th { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-on-dark-muted); font-weight: 600; }
.cmp-table td:first-child { font-weight: 700; }
.cmp-table th.hl, .cmp-table .hl { color: var(--amber-500); font-weight: 800; }
.cmp-table tbody tr:hover { background: rgba(255,255,255,.03); }
.faq details { border: 1px solid var(--line); border-radius: 14px; background: #fff; margin-bottom: 12px; overflow: hidden; }
.faq summary { list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 700; font-size: 17px; color: var(--navy-900); display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 26px; font-weight: 300; color: var(--amber-500); transition: transform .2s; line-height: 1; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 24px 22px; color: var(--text-muted); font-size: 15.5px; line-height: 1.65; }

/* ==========================================================================
   COPPER-FREE STORY — scroll-driven "water carries the heat" explainer
   ========================================================================== */
.copper-story { position: relative; color: var(--grey-700);
  background: linear-gradient(180deg, #f4faff 0%, #e7f3ff 100%); }   /* plain light blue, no boxes */
/* default (no-JS / reduced-motion): static, everything visible */
.cs-track { position: relative; height: auto; }
.cs-stage { display: flex; flex-direction: column; justify-content: center; text-align: center; padding-block: clamp(64px,9vw,110px); }
.cs-stage .container { position: relative; z-index: 2; }
/* live (JS on): pin the stage and scrub SLOWLY through a long track */
.copper-story.is-live .cs-track { height: 640vh; }
.copper-story.is-live .cs-stage { position: sticky; top: 0; height: 100vh; padding-block: 0; overflow: hidden; }
.cs-title { font-size: clamp(26px, 4vw, 46px); color: var(--navy-900); margin: 10px auto 0; max-width: 20ch; }
.cs-title .accent { color: var(--amber-600); }
.cs-note { max-width: 62ch; margin: 14px auto 0; font-size: 15px; color: var(--grey-600); }
.cs-note b { color: var(--navy-900); }

.cs-diagram { display: flex; align-items: center; gap: 0; margin: clamp(22px,4vh,46px) auto; max-width: 1040px; }
.cs-unit { position: relative; z-index: 2; flex: none; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.cs-indoor img { height: clamp(120px, 20vh, 200px); width: auto; filter: drop-shadow(0 20px 28px rgba(15,42,79,.20)); }
.cs-outdoor img { height: clamp(120px, 20vh, 210px); width: auto; filter: drop-shadow(0 20px 28px rgba(15,42,79,.20)); }
.cs-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--grey-600); }

/* two PVC pipes that TOUCH the units (ends tuck under them) */
.cs-pipes { flex: 1; min-width: 130px; z-index: 1; display: flex; flex-direction: column; gap: 20px; margin-inline: -28px; }
.cs-pipe { position: relative; height: 24px; border-radius: 999px; background: linear-gradient(#ffffff, #cfdaea); box-shadow: inset 0 2px 6px rgba(15,42,79,.24), 0 1px 0 rgba(255,255,255,.7); }
.cs-pipe-tag { position: absolute; left: 34px; right: 34px; top: -18px; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .04em; text-transform: uppercase; color: var(--grey-500); }
.cs-water { position: absolute; top: 3px; bottom: 3px; border-radius: 999px; overflow: hidden; width: calc((100% - 6px) * var(--fill, 1)); }
.cs-water--hot  { left: 3px;  background: linear-gradient(90deg, #f6a5bb, #ec5476); box-shadow: 0 0 18px rgba(236,84,118,.6); }
.cs-water--cool { right: 3px; background: linear-gradient(90deg, #2E75B6, #4fb0e0); box-shadow: 0 0 18px rgba(79,176,224,.6); }
.copper-story.is-live .cs-water { --fill: 0; }
/* irregular flowing water — three wave layers at non-harmonic speeds + churn */
.cs-wave { position: absolute; left: -25%; right: -25%; top: 0; bottom: 0; background-repeat: repeat-x; background-size: 92px 100%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='92' height='24'%3E%3Cpath d='M0 12 Q23 1 46 12 T92 12 V24 H0 Z' fill='%23ffffff' fill-opacity='0.42'/%3E%3C/svg%3E");
  animation: cs-wx .8s linear infinite, cs-churn 1.3s ease-in-out infinite; }
.cs-wave2 { background-size: 62px 100%; opacity: .72;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='62' height='24'%3E%3Cpath d='M0 13 Q15 4 31 13 T62 13 V24 H0 Z' fill='%23ffffff' fill-opacity='0.34'/%3E%3C/svg%3E");
  animation: cs-wx2 1.17s linear infinite, cs-churn .93s ease-in-out infinite -.35s; }
.cs-wave3 { background-size: 128px 100%; opacity: .5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='128' height='24'%3E%3Cpath d='M0 15 Q32 7 64 15 T128 15 V24 H0 Z' fill='%23ffffff' fill-opacity='0.3'/%3E%3C/svg%3E");
  animation: cs-wx3 1.73s linear infinite, cs-churn 1.61s ease-in-out infinite -.7s; }
@keyframes cs-wx  { to { background-position-x: 92px; } }
@keyframes cs-wx2 { to { background-position-x: -62px; } }
@keyframes cs-wx3 { to { background-position-x: 128px; } }
@keyframes cs-churn { 0%{transform:translateY(-3px) scaleY(1);} 28%{transform:translateY(2px) scaleY(1.1);} 55%{transform:translateY(-1px) scaleY(.93);} 78%{transform:translateY(3px) scaleY(1.06);} 100%{transform:translateY(-3px) scaleY(1);} }

/* heat at the indoor unit + release at the outdoor unit */
.cs-heat, .cs-release { position: absolute; top: -6px; left: 50%; transform: translateX(-50%); width: 72%; height: 46px; border-radius: 50%; opacity: 0; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(232,155,43,.75), rgba(232,155,43,0) 70%); filter: blur(3px); transition: opacity .3s; }
.cs-heat.on { opacity: 1; animation: cs-heatrise 1.6s ease-in-out infinite; }
.cs-release.on { opacity: 1; animation: cs-heatrise 1.6s ease-in-out infinite; background: radial-gradient(ellipse at center, rgba(70,166,221,.7), rgba(70,166,221,0) 70%); }
@keyframes cs-heatrise { 0%,100% { transform: translate(-50%,0) scale(1); } 50% { transform: translate(-50%,-8px) scale(1.06); } }

.cs-captions { position: relative; max-width: 640px; margin: 0 auto; display: grid; gap: 8px; }
.cs-cap { margin: 0; font-size: clamp(16px, 2vw, 20px); color: var(--grey-700); }
.cs-cap b { color: var(--navy-900); }
.cs-progress { display: none; }
/* live: one caption at a time + a scrub progress bar */
.copper-story.is-live .cs-captions { height: 4.4em; display: block; }
.copper-story.is-live .cs-cap { position: absolute; inset: 0; opacity: 0; transform: translateY(10px); transition: opacity .4s, transform .4s; }
.copper-story.is-live .cs-cap.on { opacity: 1; transform: none; }
.copper-story.is-live .cs-progress { display: block; width: min(320px, 70%); height: 3px; border-radius: 999px; background: rgba(15,42,79,.14); margin: 26px auto 0; overflow: hidden; }
.copper-story.is-live .cs-progress i { display: block; height: 100%; width: 0%; background: var(--amber-500); }

/* phone: stack the diagram vertically — pipes run top(indoor) to bottom(outdoor) */
@media (max-width: 720px) {
  .cs-diagram { flex-direction: column; gap: 0; max-width: 320px; }
  .cs-pipes { flex-direction: row; justify-content: center; gap: 34px; width: 100%; min-height: 190px; margin: -18px 0; }
  .cs-pipe { width: 24px; height: 190px; }
  .cs-pipe-tag { display: none; }
  .cs-water { left: 3px; right: 3px; width: auto; height: calc((100% - 6px) * var(--fill, 1)); }
  .cs-water--hot  { top: 3px; bottom: auto; }      /* hot flows down toward outdoor */
  .cs-water--cool { bottom: 3px; top: auto; }       /* cool flows up toward indoor */
  .cs-indoor img { height: 118px; }
  .cs-outdoor img { height: 128px; }
}

/* ==========================================================================
   PROJECTS — case-study detail (real anonymised installs)
   ========================================================================== */
.proj-hero { position: relative; min-height: 58vh; display: flex; align-items: flex-end; color: #fff; overflow: hidden; background: var(--navy-900); }
.proj-hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
.proj-hero-veil { position: absolute; inset: 0; z-index: 1; background: linear-gradient(to top, rgba(8,24,47,.94) 6%, rgba(8,24,47,.6) 46%, rgba(8,24,47,.25) 100%); }
.proj-hero-inner { position: relative; z-index: 2; padding-block: clamp(110px, 16vh, 170px) clamp(30px, 5vh, 54px); }
.proj-hero .crumb { color: var(--text-on-dark-muted); }
.proj-hero .crumb a { color: var(--text-on-dark-muted); }
.proj-hero h1 { font-size: clamp(28px, 4.4vw, 46px); max-width: 20ch; margin: 12px 0 10px; }
.proj-result { font-size: clamp(16px, 2vw, 20px); color: var(--amber-400); font-weight: 700; margin: 0; }

.proj-wrap { max-width: 900px; margin: 0 auto; }
.proj-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; margin-bottom: 34px; }
.pf { background: #fff; padding: 16px 18px; }
.pf-l { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: .05em; text-transform: uppercase; color: var(--grey-500); margin-bottom: 4px; }
.pf-v { font-size: 16px; font-weight: 700; color: var(--navy-900); }
.proj-story { font-size: 17.5px; line-height: 1.75; }
.proj-story p { margin: 0 0 1.1em; }
.proj-wrap h2 { font-size: clamp(22px, 2.6vw, 28px); color: var(--navy-900); margin: 36px 0 16px; }
/* big photo carousel (swipe on touch, arrows on desktop) */
.proj-carousel { position: relative; }
.proj-track { display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; scroll-behavior: smooth; padding-bottom: 10px; scrollbar-width: thin; }
.proj-track::-webkit-scrollbar { height: 7px; }
.proj-track::-webkit-scrollbar-thumb { background: var(--grey-300); border-radius: 999px; }
.pg-item { flex: 0 0 auto; width: min(88%, 640px); margin: 0; position: relative; scroll-snap-align: center; border-radius: 16px; overflow: hidden; background: var(--navy-800); box-shadow: var(--shadow-sm); }
.pg-item img { display: block; width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.pg-item figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 18px 12px; font-size: 13px; color: #fff; background: linear-gradient(to top, rgba(8,24,47,.82), transparent); }
.pc-nav { position: absolute; top: calc(50% - 26px); transform: translateY(-50%); width: 44px; height: 44px; border-radius: 50%; border: 0; background: #fff; box-shadow: var(--shadow-md); color: var(--navy-900); cursor: pointer; display: grid; place-items: center; z-index: 3; transition: background .2s, transform .2s; }
.pc-nav svg { width: 20px; height: 20px; }
.pc-nav:hover { background: var(--amber-500); transform: translateY(-50%) scale(1.05); }
.pc-prev { left: -8px; } .pc-next { right: -8px; }
@media (hover: none) { .pc-nav { display: none; } }   /* touch: just swipe */
/* compact "more installs" card (no detail page) */
.case--sm { min-height: 250px; }
.case--sm h3 { font-size: 18px; margin-bottom: 0; }
@media (max-width: 700px) { .proj-facts { grid-template-columns: 1fr 1fr; } .pg-item { width: 92%; } }

/* ==========================================================================
   BLOG — index (topic hub) + post template (built for SEO / AEO / GEO)
   ========================================================================== */
/* Featured guide (large horizontal card) */
.blog-featured { display: grid; grid-template-columns: 1.05fr .95fr; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); }
.blog-featured .bf-photo { position: relative; min-height: 340px; background: var(--navy-800); }
.blog-featured .bf-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.blog-featured .bf-body { padding: clamp(26px, 3.5vw, 46px); display: flex; flex-direction: column; justify-content: center; }
.blog-featured .bf-body h2 { font-size: clamp(24px, 3vw, 34px); margin: 10px 0 12px; }
.blog-featured .bf-body p { color: var(--text-muted); font-size: 16px; margin-bottom: 22px; }
.blog-chip { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--amber-600); background: rgba(232,155,43,.12); border-radius: 999px; padding: 5px 12px; width: fit-content; }
.blog-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 13px; color: var(--text-faint); margin-top: 4px; }
.blog-meta span { display: inline-flex; align-items: center; gap: 6px; }
.blog-meta svg { width: 14px; height: 14px; opacity: .6; }

/* Category section head */
.blog-cathead { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin: 0 0 22px; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.blog-cathead h3 { font-size: 22px; margin: 0; }
.blog-cathead a { font-size: 14px; font-weight: 600; color: var(--amber-600); }

/* Article cards */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.bcard { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: #fff; text-decoration: none; color: inherit; transition: transform .18s, box-shadow .2s, border-color .2s; }
a.bcard:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--grey-200); }
.bcard .bimg { position: relative; aspect-ratio: 16/10; background: var(--navy-800); overflow: hidden; }
.bcard .bimg img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .5s cubic-bezier(.2,.8,.2,1); }
a.bcard:hover .bimg img { transform: scale(1.05); }
.bcard .bimg .blog-chip { position: absolute; top: 12px; left: 12px; background: rgba(255,255,255,.94); }
.bcard .bbody { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.bcard h4 { font-size: 18px; line-height: 1.28; margin: 0 0 8px; }
.bcard .bexc { color: var(--text-muted); font-size: 14.5px; line-height: 1.55; margin: 0 0 16px; flex: 1; }
.bcard .blog-meta { margin-top: auto; }
.bcard--soon { opacity: .72; }
.bcard--soon .soon-tag { position: absolute; top: 12px; right: 12px; font-size: 11px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: #fff; background: rgba(15,42,79,.82); border-radius: 999px; padding: 4px 10px; }

/* ---- Post template ---- */
.post-wrap { max-width: 760px; margin: 0 auto; }
.post-head h1 { font-size: clamp(30px, 4.4vw, 46px); margin: 12px 0 16px; }
.post-lede { font-size: 19px; color: var(--grey-700); line-height: 1.6; margin-bottom: 22px; }
.post-byline { display: flex; align-items: center; gap: 12px; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 30px; }
.post-byline .avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--navy-900); color: var(--amber-500); display: grid; place-items: center; font-weight: 800; flex: none; }
.post-byline .who { font-size: 14px; line-height: 1.4; }
.post-byline .who b { color: var(--navy-900); }
.post-byline .who span { color: var(--text-faint); }

/* The liftable answer box — what AI engines quote */
.answer-box { background: linear-gradient(150deg, var(--navy-900), var(--navy-800)); color: #fff; border-radius: var(--radius); padding: 24px 26px; margin: 6px 0 30px; position: relative; overflow: hidden; }
.answer-box::before { content: ""; position: absolute; inset: 0; background-image: var(--blueprint); background-size: 30px 30px; opacity: .5; }
.answer-box .rel { position: relative; z-index: 2; }
.answer-box .q { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--amber-400); margin-bottom: 8px; }
.answer-box p { font-size: 17px; line-height: 1.6; margin: 0; color: #fff; }
.answer-box p b { color: var(--amber-400); }

/* Prose */
.prose { font-size: 17.5px; line-height: 1.75; color: var(--grey-700); }
.prose h2 { font-size: clamp(23px, 2.6vw, 30px); color: var(--navy-900); margin: 42px 0 14px; }
.prose h3 { font-size: 20px; color: var(--navy-900); margin: 28px 0 10px; }
.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 22px; }
.prose li { margin-bottom: .5em; }
.prose a { color: var(--amber-600); text-decoration: underline; text-underline-offset: 2px; }
.prose strong { color: var(--navy-900); }

/* Comparison table — the most-cited structure in AI answers */
.post-table { width: 100%; border-collapse: collapse; margin: 8px 0 28px; font-size: 15.5px; overflow: hidden; border-radius: 12px; border: 1px solid var(--line); }
.post-table th, .post-table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); }
.post-table thead th { background: var(--navy-900); color: #fff; font-size: 13.5px; letter-spacing: .02em; }
.post-table tbody tr:nth-child(even) { background: var(--grey-50); }
.post-table td:first-child { font-weight: 600; color: var(--navy-900); }
.post-table .win { color: var(--amber-600); font-weight: 700; }
.table-scroll { overflow-x: auto; }

/* Real-data evidence callout — first-party numbers lift AI citation */
.evidence { border-left: 3px solid var(--amber-500); background: var(--paper); border-radius: 0 12px 12px 0; padding: 18px 22px; margin: 8px 0 28px; }
.evidence .etag { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--amber-600); margin-bottom: 6px; }
.evidence p { margin: 0; font-size: 16px; color: var(--grey-700); }
.evidence b { color: var(--navy-900); }

/* Author box (E-E-A-T) */
.author-box { display: flex; gap: 16px; align-items: flex-start; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: #fff; margin: 36px 0; }
.author-box .avatar { width: 56px; height: 56px; border-radius: 50%; background: var(--navy-900); color: var(--amber-500); display: grid; place-items: center; font-weight: 800; font-size: 20px; flex: none; }
.author-box h4 { margin: 0 0 4px; font-size: 16px; }
.author-box p { margin: 0; font-size: 14.5px; color: var(--text-muted); }

.post-toc { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; margin-bottom: 30px; }
.post-toc b { display: block; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--grey-600); margin-bottom: 10px; }
.post-toc a { display: block; color: var(--navy-900); font-size: 15px; padding: 4px 0; text-decoration: none; }
.post-toc a:hover { color: var(--amber-600); }

@media (max-width: 860px) {
  .blog-featured { grid-template-columns: 1fr; }
  .blog-featured .bf-photo { min-height: 220px; }
  .blog-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 10px; }
  .hero-visual { min-height: 320px; order: 2; }
  .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .ind-grid { grid-template-columns: repeat(3, 1fr); }
  .compare .inner { grid-template-columns: 1fr; }
  .calc { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  /* Top-align (NOT center) + generous top padding to clear the header row: the menu
     is taller than a phone screen, so centering clipped Home off the top (and made it
     unreachable by scrolling) and Contact off the bottom. flex-start + scroll fixes it. */
  .nav { position: fixed; inset: 0 0 0 auto; width: min(84vw, 360px); flex-direction: column; align-items: flex-start; justify-content: flex-start; gap: 8px; padding: 92px 40px 48px; background: var(--navy-900); transform: translateX(100%); transition: transform .4s cubic-bezier(.2,.8,.2,1); box-shadow: -20px 0 60px rgba(0,0,0,.4); }
  .nav.is-open { transform: none; overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .nav > a, .is-scrolled .nav > a, .has-sub > a, .is-scrolled .has-sub > a { color: #fff; font-size: 19px; font-weight: 700; }
  .has-sub { width: 100%; }
  .has-sub > a .chev { display: none; }
  /* submenus expand inline in the mobile drawer */
  .submenu { position: static; opacity: 1; visibility: visible; transform: none; background: transparent; border: 0; box-shadow: none; padding: 4px 0 10px 14px; min-width: 0; }
  .submenu a { color: rgba(255,255,255,.72); font-size: 15px; padding: 7px 0; }
  .submenu a:hover { background: transparent; color: var(--amber-500); }
  .submenu a small { color: rgba(255,255,255,.5); }
  .nav-toggle { display: block; }
  .header-cta .btn { display: none; }
  .callout.c3 { display: none; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .cols-3, .cols-4, .cols-2 { grid-template-columns: 1fr; }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .compare .inner { grid-template-columns: 1fr; }
  .callout.c1 { left: 0; } .callout.c2 { right: 0; }
  .case .cstats { gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; visibility: visible !important; }
  .ticker-track, .hero-pill .dot { animation: none !important; }
  * { scroll-behavior: auto !important; }
}

/* ===== Products page ===== */
.pcard .pbest { margin: 14px 0 0; font-size: 13px; font-weight: 600; color: var(--navy-900); letter-spacing: .01em; }
.prod-mini .mini { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 24px 26px; display: flex; flex-direction: column; }
.prod-mini .mini h3 { font-size: 19px; margin-bottom: 8px; }
.prod-mini .mini p { margin: 0; color: var(--text-muted); font-size: 15px; flex: 1; }
.prod-mini .mini .pcap { margin-top: 16px; }
.prod-mini .mini .pbest { margin-top: 12px; }
.prod-note { margin-top: 22px; font-size: 14px; color: var(--text-muted); text-align: center; }
.choose { max-width: 760px; margin: 26px auto 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.choose-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px 22px; border-bottom: 1px solid var(--line); }
.choose-row:last-child { border-bottom: 0; }
.choose-q { font-size: 15px; color: var(--text-body); }
.choose-a { flex: none; font-size: 14px; font-weight: 700; color: var(--navy-900); background: var(--amber-100); padding: 6px 14px; border-radius: 999px; white-space: nowrap; }
.choose-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 26px; }
.coldlead { display: grid; grid-template-columns: 300px 1fr; gap: 0; background: var(--navy-950); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--text-on-dark); transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s; }
.coldlead:hover { transform: translateY(-3px); box-shadow: 0 20px 40px -18px rgba(15,42,79,.5); }
.coldlead-img { background: #0b1f3a; overflow: hidden; }
.coldlead-img img { width: 100%; height: 100%; object-fit: cover; opacity: .92; }
.coldlead-body { padding: 34px 38px; }
.coldlead-body h3 { color: #fff; font-size: 24px; margin: 8px 0 10px; }
.coldlead-body p { color: var(--text-on-dark-muted); font-size: 15px; margin: 0; max-width: 52ch; }
.coldlead-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; font-weight: 700; font-size: 14px; color: var(--amber-400); }
.coldlead-link svg { width: 18px; height: 18px; }
@media (max-width: 720px) {
  .coldlead { grid-template-columns: 1fr; }
  .coldlead-img { height: 190px; }
  .choose-row { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* ===== Projects page: logo wall, stat band, industry tiles ===== */
.logo-wall { overflow: hidden; position: relative; padding: 6px 0; }
.logo-wall::before, .logo-wall::after { content: ""; position: absolute; top: 0; bottom: 0; width: 72px; z-index: 2; pointer-events: none; }
.logo-wall::before { left: 0; background: linear-gradient(to right, var(--paper), transparent); }
.logo-wall::after { right: 0; background: linear-gradient(to left, var(--paper), transparent); }
.logo-track { display: flex; gap: 24px; align-items: center; width: max-content; animation: marquee 46s linear infinite; }
.logo-wall:hover .logo-track { animation-play-state: paused; }
.logo-chip { flex: 0 0 auto; height: 66px; min-width: 148px; display: grid; place-items: center; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 0 22px; }
.logo-chip img { max-height: 42px; max-width: 128px; object-fit: contain; }
.logo-chip.ph { color: var(--grey-300); }
.logo-chip.ph svg { width: 30px; height: 30px; }
.statband { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.statband .st { background: #fff; padding: 26px 22px; text-align: center; }
.statband .st .n { font-size: clamp(22px, 3vw, 30px); font-weight: 800; color: var(--navy-900); letter-spacing: -.01em; }
.statband .st .l { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.indtiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
.indtile { display: flex; align-items: center; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; text-decoration: none; color: var(--navy-900); transition: border-color .2s, transform .2s, box-shadow .2s; }
.indtile:hover { border-color: var(--amber-500); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.indtile .ti { width: 40px; height: 40px; flex: none; display: grid; place-items: center; border-radius: 10px; background: var(--amber-100); color: var(--navy-900); }
.indtile .ti svg { width: 22px; height: 22px; }
.indtile .tn { font-weight: 700; font-size: 15px; }
.indtile .ta { font-size: 13px; color: var(--text-muted); margin-top: 1px; }
.indtile .tgo { margin-left: auto; color: var(--grey-400); transition: color .2s, transform .2s; }
.indtile:hover .tgo { color: var(--amber-500); transform: translateX(3px); }
@media (max-width: 900px) { .indtiles { grid-template-columns: repeat(2, 1fr); } .statband { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .indtiles { grid-template-columns: 1fr; } }

/* ===== Round-2 feedback (2026-07-31) ===== */
/* Every button floats on hover */
.btn:hover { transform: translateY(-3px); box-shadow: 0 12px 24px -12px rgba(15,42,79,.45); }

/* Hero action buttons sit on one line, same height */
.hero-actions { align-items: center; }
.hero-actions .btn { min-height: 54px; }

/* Logo wall: bigger, full colour, no placeholder box, slower scroll */
.logo-track { animation-duration: 96s; gap: 40px; }
.logo-chip { background: transparent; border: 0; height: 96px; min-width: 170px; padding: 0 10px; }
.logo-chip img { max-height: 68px; max-width: 180px; }

/* Stat band v2 — dark, iconed */
.statband2 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; background: var(--navy-950); border-radius: 18px; overflow: hidden; }
.statband2 .st { padding: 34px 26px; text-align: center; position: relative; }
.statband2 .st + .st::before { content: ""; position: absolute; left: 0; top: 24%; bottom: 24%; width: 1px; background: rgba(255,255,255,.12); }
.statband2 .ic { width: 42px; height: 42px; margin: 0 auto 12px; display: grid; place-items: center; border-radius: 12px; background: rgba(232,155,43,.14); color: var(--amber-400); }
.statband2 .ic svg { width: 22px; height: 22px; }
.statband2 .n { font-size: clamp(19px, 2.2vw, 24px); font-weight: 800; color: #fff; letter-spacing: -.01em; }
.statband2 .l { font-size: 13px; color: var(--text-on-dark-muted); margin-top: 5px; }
@media (max-width: 860px) { .statband2 { grid-template-columns: repeat(2, 1fr); } .statband2 .st:nth-child(3)::before { display: none; } }

/* Industry tiles: name above, description under it */
.indtile .tn, .indtile .ta { display: block; }

/* Page-hero photo background */
.page-hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
.page-hero-veil { position: absolute; inset: 0; z-index: 1; background: linear-gradient(to top, rgba(8,24,47,.93) 8%, rgba(8,24,47,.62) 55%, rgba(8,24,47,.42) 100%); }
/* .page-hero geometry is unified below — see "Unified hero geometry" */
.page-hero::before { z-index: 1; }

/* FAQ: springy accordion */
.faq details { transition: border-color .25s, box-shadow .25s; }
.faq details:hover { border-color: var(--amber-500); }
.faq details[open] { border-color: var(--amber-500); box-shadow: 0 10px 26px -18px rgba(15,42,79,.35); }
.faq summary::after { transition: transform .35s cubic-bezier(.34,1.56,.64,1); }
.faq details > div { overflow: hidden; }

/* Blog author avatar = SystemAir swirl */
.avatar { overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; object-position: left center; background: #fff; display: block; }

/* About milestones timeline */
.mstones { position: relative; max-width: 780px; margin: 30px auto 0; padding-left: 26px; }
.mstones::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--amber-500), var(--navy-900)); border-radius: 2px; }
.mstone { position: relative; padding: 0 0 26px 18px; }
.mstone::before { content: ""; position: absolute; left: -26px; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 4px solid var(--amber-500); }
.mstone .yr { font-weight: 800; color: var(--navy-900); font-size: 17px; }
.mstone p { margin: 4px 0 0; color: var(--text-muted); font-size: 15.5px; }

/* Contact coverage map (from the SystemAir deck) */
.covmap { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.covmap svg { width: 100%; height: auto; max-height: 560px; }
.covmap .cust { animation: custPulse 1.8s ease-in-out infinite; }
@keyframes custPulse { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }
.covmap-legend { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; margin-top: 14px; font-size: 13.5px; color: var(--text-muted); }
.covmap-legend .sw { display: inline-block; width: 13px; height: 13px; border-radius: 4px; vertical-align: -2px; margin-right: 6px; }

/* Footer tagline */
.footer-tag { margin-top: 12px; font-weight: 700; color: var(--amber-400); font-size: 14.5px; line-height: 1.45; }

/* ===== Round-3 feedback (2026-08-02) ===== */
/* Language switch — prominent pill, sits far top-right (right of the CTA button) */
.header-cta .lang-switch { display: inline-flex; align-items: center; gap: 2px; margin-left: 16px; order: 3; padding: 4px; border: 1.5px solid var(--line); border-radius: 999px; background: #fff; font-size: 13px; font-weight: 700; }
.lang-switch a, .lang-switch span { display: inline-block; padding: 4px 11px; border-radius: 999px; text-decoration: none; color: var(--text-muted); line-height: 1; transition: background .2s, color .2s; }
.lang-switch a:hover { color: var(--navy-900); }
.lang-switch .on { background: var(--navy-900); color: #fff; }
.header-cta { display: flex; align-items: center; }
.header-cta .btn--amber { order: 1; }
.header-cta .nav-toggle { order: 4; }

/* ===== Unified hero geometry — every page hero matches the homepage =====
   ONE height + the same bottom-anchored, left-aligned, fixed-width copy on
   every page, so heroes stop looking taller/shorter or wider/narrower page
   to page. Home (.hero.has-bg) stays the reference at the same 86vh. */
.hero.has-bg,
.hero.hero--pillar,
.page-hero,
.proj-hero { min-height: 92vh; }
.page-hero,
.proj-hero {
  display: flex;
  align-items: center;                 /* match the homepage hero (was flex-end) */
  padding: clamp(128px, 15vh, 168px) 0 clamp(64px, 8vh, 96px);
}
.page-hero > .container,
.proj-hero .proj-hero-inner { width: 100%; padding-block: 0; }
/* Pillar heroes (.hero--pillar) put content directly in .container, which — as a
   flex item of the display:flex .hero — shrink-wraps to its content then
   margin:auto-centres it. A page with a narrow h1 (e.g. Service, max-width:16ch)
   therefore looked "squeezed into the middle". Force the container full-width so
   content stays flush-left, consistent with the .page-hero / .proj-hero pages. */
.hero > .container { width: 100%; }
.page-hero h1,
.proj-hero h1 {
  font-size: clamp(36px, 5vw, 58px); font-weight: 800;
  letter-spacing: -.03em; line-height: 1.06; max-width: 22ch; margin: 12px 0 4px;
}
.page-hero .hero-sub,
.proj-hero .proj-result { max-width: 60ch; }
.hero.hero--pillar h1 { max-width: 22ch; }

/* Logo wall: larger logos */
.logo-chip { height: 118px; min-width: 200px; }
.logo-chip img { max-height: 92px; max-width: 210px; }

/* Milestone timeline v2 — centered line, alternating cards, scroll-fill + IoT badge */
.mstline { position: relative; max-width: 940px; margin: 44px auto 0; }
.mstline::before { content: ""; position: absolute; left: 50%; top: 6px; bottom: 6px; width: 6px; transform: translateX(-50%); background: var(--line); border-radius: 6px; }
.mstline-fill { position: absolute; left: 50%; top: 6px; width: 6px; transform: translateX(-50%); height: 0; background: linear-gradient(var(--amber-500), var(--amber-600)); border-radius: 6px; z-index: 1; transition: height .15s linear; }
.mst { position: relative; width: 50%; padding: 0 42px 34px 0; box-sizing: border-box; }
.mst:nth-child(even) { margin-left: 50%; padding: 0 0 34px 42px; }
.mst-dot { position: absolute; top: 14px; width: 20px; height: 20px; border-radius: 50%; background: #fff; border: 5px solid var(--line); z-index: 2; transition: border-color .3s, box-shadow .3s; }
.mst:nth-child(odd) .mst-dot { right: -10px; }
.mst:nth-child(even) .mst-dot { left: -10px; }
.mst.reached .mst-dot { border-color: var(--amber-500); box-shadow: 0 0 0 5px rgba(232,155,43,.18); }
.mst-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; box-shadow: 0 14px 34px -22px rgba(15,42,79,.35); transition: transform .3s, box-shadow .3s; }
.mst.reached .mst-card { transform: translateY(-2px); }
/* No fixed height + NO overflow:hidden here on purpose: the frame grows to the
   image so nothing is ever clipped/cropped. min-height keeps the band consistent. */
.mst-img { position: relative; min-height: 148px; background: #fff; display: flex; align-items: center; justify-content: center; padding: 16px; border-bottom: 1px solid var(--line); }
/* !important + an ABSOLUTE px max-height are the guards: a leaked plugin/global
   `img{...!important}` (height:auto / object-fit:cover / width:100%) would otherwise
   win over a less-!important rule and blow the image up full-size. A % max-height is
   unreliable for tall images inside a flex/grid item (min-height:auto), so cap in px.
   width/height:auto keeps the natural aspect → the WHOLE image always shows. */
.mst-img img { display: block !important; width: auto !important; height: auto !important; max-width: 100% !important; max-height: 132px !important; object-fit: contain !important; }
.mst-iot { position: absolute; top: 10px; right: 10px; width: 36px; height: 36px; border-radius: 11px; background: var(--navy-900); color: var(--amber-400); display: grid; place-items: center; }
.mst-body { padding: 16px 18px 18px; }
.mst-yr { font-weight: 800; color: var(--amber-600); font-size: 14px; letter-spacing: .02em; }
.mst-t { font-weight: 800; color: var(--navy-900); font-size: 18px; margin-top: 2px; letter-spacing: -.01em; }
.mst-body p { margin: 9px 0 0; color: var(--text-muted); font-size: 14.5px; line-height: 1.55; }
@media (max-width: 760px) {
  .mstline::before, .mstline-fill { left: 19px; transform: none; }
  .mst, .mst:nth-child(even) { width: 100%; margin-left: 0; padding: 0 0 26px 48px; }
  .mst:nth-child(odd) .mst-dot, .mst:nth-child(even) .mst-dot { left: 9px; right: auto; }
}

/* ===== Project photo gallery — auto-scrolling marquee (pause on hover) ===== */
.pgm-wrap { margin-top: 26px; display: flex; flex-direction: column; gap: 22px; }
.pgm-label { font-size: 12.5px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; color: var(--navy-900); margin-bottom: 12px; display: flex; align-items: center; gap: 9px; }
.pgm-label::before { content: ""; width: 22px; height: 3px; border-radius: 3px; background: var(--amber-500); }
.pgm-row {
  overflow: hidden; position: relative;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 5%, #000 95%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 5%, #000 95%, transparent 100%);
}
.pgm-track { display: flex; gap: 16px; width: max-content; will-change: transform; animation: pgmscroll 70s linear infinite; }
.pgm-track.rev { animation-direction: reverse; }
.pgm-row:hover .pgm-track { animation-play-state: paused; }
.pgm-card {
  flex: 0 0 auto; width: 300px; height: 208px; border-radius: 16px; overflow: hidden;
  position: relative; background: var(--navy-800); box-shadow: 0 14px 34px -22px rgba(15,42,79,.5);
}
.pgm-card img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s cubic-bezier(.2,.8,.2,1); }
.pgm-card:hover img { transform: scale(1.05); }
@keyframes pgmscroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .pgm-track { animation: none; } }
@media (max-width: 640px) { .pgm-card { width: 224px; height: 158px; } .pgm-track { animation-duration: 52s; } }

/* Heading line-wrap: balance the lines so a heading never orphans a single word
   ("… not 9") onto its own line. Progressive enhancement — older browsers just
   wrap normally (Vivian 2026-08-02). */
.hero h1, .page-hero h1, .proj-hero h1, .hero.hero--pillar h1, .section-head h2, .mst-t { text-wrap: balance; }

/* Case-study "Project summary" title above the facts grid. */
.proj-facts-title { font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--grey-500); margin: 0 0 12px; display: flex; align-items: center; gap: 9px; }
.proj-facts-title::before { content: ""; width: 20px; height: 2px; border-radius: 2px; background: var(--amber-500); }

/* ============================================================
   THEME COLOUR HARDENING — v3 (2026-08-03, WordPress cutover)
   These marketing pages run inside a plugin-heavy WordPress
   (Elementor / Astra / chat-widget global CSS) that injects direct
   element colour rules (h1-h6, a, p, li…). A direct element rule
   beats our *inherited* colours — flipping on-dark text (hero, nav,
   footer) to black AND on-light text (industry names) to white.
   Re-assert EVERY colour explicitly: >=2-class selectors + !important
   + literal values (immune to :root var collisions), so they outrank
   any bare-element !important a plugin can throw. Scoped to our own
   components only.
   ============================================================ */

/* ---- DARK surfaces → light text ------------------------------------ */
/* Hero */
.hero.on-dark h1, .hero .hero-copy h1 { color: #EAF1FA !important; }
.hero.on-dark h1 .accent, .hero .hero-copy h1 .accent { color: #E89B2B !important; }
.hero .hero-pill, .hero .hero-copy { color: #EAF1FA !important; }
.hero .hero-sub, .hero .hero-trust, .hero .hero-trust span { color: rgba(234,241,250,.72) !important; }
.hero .btn--ghost { color: #EAF1FA !important; }

/* Copper-free compare band + any .on-dark section */
.on-dark .section-head h2, .compare.on-dark h2 { color: #FFFFFF !important; }
.on-dark .section-head p, .compare.on-dark .section-head p { color: rgba(234,241,250,.72) !important; }
.on-dark .eyebrow, .eyebrow.light { color: #F2B24E !important; }
.compare.on-dark .cmp, .compare.on-dark .cmp .unit, .compare.on-dark .cmp li { color: rgba(234,241,250,.9) !important; }
.compare.on-dark .cmp .big { color: #FFFFFF !important; }
.compare.on-dark .cmp .tag { color: #EAF1FA !important; }

/* Footer (dark navy) — colours were explicit but had no !important */
.site-footer, .site-footer .footer-brand p, .site-footer .footer-bottom { color: rgba(234,241,250,.72) !important; }
.site-footer h4 { color: #FFFFFF !important; }
.site-footer a, .site-footer .footer-legal a { color: rgba(234,241,250,.72) !important; }
.site-footer a:hover, .site-footer .footer-legal a:hover { color: #E89B2B !important; }
.site-footer .footer-tag { color: #F2B24E !important; }

/* ---- HEADER — nav + logo, both states ------------------------------ */
.site-header:not(.is-scrolled) .nav > a,
.site-header:not(.is-scrolled) .nav .has-sub > a { color: #EAF1FA !important; }
.site-header.is-scrolled .nav > a,
.site-header.is-scrolled .nav .has-sub > a { color: #2F3849 !important; }
.site-header:not(.is-scrolled) .brand-logo { filter: brightness(0) invert(1) !important; }
.site-header.is-scrolled .brand-logo { filter: none !important; }
.site-header .submenu a { color: #2F3849 !important; }

/* ---- LIGHT surfaces → dark text (plugins were forcing these white) -- */
.ind .nm { color: #12203A !important; }
.ind:hover .nm, .ind:hover .ic { color: #FFFFFF !important; }
.section:not(.on-dark) .section-head h2 { color: #12203A !important; }

/* ---- LOGO — lock its size against plugin/theme img rules (e.g. Astra's
       `header .custom-logo-link img{width:211px}` / `img` overrides) ---- */
.site-header .brand-logo { height: 40px !important; width: auto !important; max-width: none !important; min-width: 0 !important; }
.site-header.is-scrolled .brand-logo { height: 34px !important; }

/* ---- Hide the separate click-to-chat WhatsApp plugin entirely — its floating
       button sits at z-index 99999999 and blocks the theme's own widget AND the
       footer links. One WhatsApp widget only (the theme's), always clickable. ---- */
#ht-ctc-chat, .ht-ctc, [class*="ht_ctc"], [id*="ht_ctc"] { display: none !important; }

/* ---- The floating WhatsApp widget is a mostly-empty fixed box; without this it
       swallows clicks on whatever sits under it (the footer's WhatsApp / Facebook
       links). Only the visible bubble + button should catch clicks. ---- */
.wa-widget { pointer-events: none !important; }
.wa-widget .wa-bubble, .wa-widget .wa-fab { pointer-events: auto !important; }

/* ---- Milestone timeline (About page) — year / title / description explicit so
       plugin colour rules can't hide them on the white cards. ---- */
.mst-yr { color: #C9821E !important; }
.mst-t { color: #0F2A4F !important; }
.mst-body p { color: #6B7689 !important; }

/* ---- Case-study cards (title + stats sit on dark photos) ---- */
.case h3, .case .cbody h3 { color: #FFFFFF !important; }
.case .cmeta { color: #F2B24E !important; }
.case .cstats .n { color: #FFFFFF !important; }
.case .cstats .l { color: rgba(234,241,250,.72) !important; }

/* ---- Section eyebrow labels ---- */
.section-head .eyebrow { color: #C9821E !important; }
.on-dark .section-head .eyebrow, .on-dark .eyebrow, .eyebrow.light { color: #F2B24E !important; }

/* ---- Buttons — text colour must survive plugin a{} overrides. The CTA
   "WhatsApp Us" outline button keeps its own dark colour via an inline
   !important in front-page.php, which outranks this stylesheet rule. ---- */
.btn.btn--navy { color: #FFFFFF !important; }
.btn.btn--amber { color: #08182F !important; }
.btn.btn--light { color: #0F2A4F !important; }
.btn.btn--ghost { color: #EAF1FA !important; }

/* ---- Floating WhatsApp widget (green button = white text; bubble = dark) ---- */
.wa-widget .wa-fab, .wa-widget .wa-fab span { color: #FFFFFF !important; }
.wa-widget .wa-bubble { color: #12203A !important; }
.wa-widget .wa-bubble b { color: #0F2A4F !important; }

/* ---- Mobile nav drawer is a dark navy panel, so ALL nav text must be light.
   The desktop white-dropdown hardening (`.site-header .submenu a{color:#2F3849!important}`
   above) uses !important and ignores the media query, which made the submenu
   TITLES invisible on the drawer (descriptions use `small`, so they stayed visible).
   Re-assert light colours inside the drawer with matching/higher specificity + !important,
   placed AFTER the desktop rules so they win on mobile only. ---- */
@media (max-width: 1024px) {
  .site-header .nav > a,
  .site-header.is-scrolled .nav > a,
  .site-header .nav .has-sub > a,
  .site-header.is-scrolled .nav .has-sub > a { color: #FFFFFF !important; }
  .site-header .submenu a { color: rgba(255,255,255,.82) !important; }
  .site-header .submenu a small { color: rgba(255,255,255,.55) !important; }
  .site-header .submenu a:hover { color: #F2B24E !important; }
}

/* ---- CRITICAL mobile fix: a `backdrop-filter` establishes a containing block for
   position:fixed descendants, so the scrolled header TRAPPED the fixed nav drawer
   inside the ~70px header box (drawer showed as a short strip at the top). Drop the
   blur on mobile so the drawer fills the viewport; a near-solid bg replaces it. ---- */
@media (max-width: 1024px) {
  .site-header.is-scrolled { backdrop-filter: none !important; -webkit-backdrop-filter: none !important; background: rgba(255,255,255,.97); }
}

/* ---- Mobile nav: dim backdrop (tap outside the drawer to close) + hide the
   floating WhatsApp button while the drawer is open. Driven by `body.menu-open`
   (set in theme.js). Backdrop sits below the header/drawer (z-60) but above page
   content, so the drawer stays fully visible and the rest is tap-to-close. ---- */
.nav-backdrop { display: none; }
@media (max-width: 1024px) {
  .nav-backdrop { display: block; position: fixed; inset: 0; z-index: 55; background: rgba(8,24,47,.5); opacity: 0; visibility: hidden; transition: opacity .3s ease; }
  body.menu-open .nav-backdrop { opacity: 1; visibility: visible; }
  body.menu-open .wa-widget { opacity: 0 !important; visibility: hidden !important; pointer-events: none !important; }
}

/* ---- Form "thank you" confirmation (modal thanks screen + contact-page in-place) ---- */
.ft-tick { width: 56px; height: 56px; border-radius: 50%; background: rgba(37,211,102,.14); color: #1FA855; display: grid; place-items: center; margin: 0 auto 18px; }
.ft-tick svg { width: 30px; height: 30px; }
.modal [data-screen="thanks"] { text-align: center; }
.modal [data-screen="thanks"] .eyebrow { justify-content: center; }
.form-thanks { text-align: center; max-width: 560px; margin: 10px auto; padding: 38px 28px; background: linear-gradient(150deg,#fff,var(--paper)); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-md); }
.form-thanks h3 { font-size: 22px; color: var(--navy-900); margin-bottom: 8px; }
.form-thanks p { color: var(--text-muted); margin-bottom: 20px; }