/* ============================================================
   NOCO Mechanical — spec preview by Woodcrest Marketing
   Design system: thermal hot/cold duality (heating + cooling +
   plumbing), carried by type, color and geometry. No photos.
   ============================================================ */

:root {
  /* Brand */
  --ink:        #0B2230;   /* near-black blue, body text */
  --primary:    #0E3A56;   /* deep tradesman blue */
  --primary-2:  #0A2C42;   /* darker shade */
  --secondary:  #2B7CA8;   /* mid steel blue (cool) */
  --accent:     #E8702A;   /* warm flame orange (heat) */
  --accent-2:   #F39B5C;   /* lighter warm */

  /* Neutrals */
  --paper:      #F6F4EF;   /* warm off-white */
  --paper-2:    #EDE9E0;   /* card / panel */
  --line:       #D9D3C7;   /* hairline on paper */
  --line-dark:  rgba(255,255,255,.14);
  --muted:      #4C5C66;   /* secondary text on paper */
  --muted-dark: #9FB6C4;   /* secondary text on dark */
  --white:      #FFFFFF;

  /* Type */
  --serif: "Iowan Old Style", "Palatino Linotype", "Palatino", "Georgia", "Times New Roman", serif;
  --sans:  "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;

  /* Fluid scale */
  --step--1: clamp(.82rem, .78rem + .2vw, .92rem);
  --step-0:  clamp(1rem, .95rem + .25vw, 1.15rem);
  --step-1:  clamp(1.2rem, 1.05rem + .6vw, 1.6rem);
  --step-2:  clamp(1.55rem, 1.25rem + 1.4vw, 2.4rem);
  --step-3:  clamp(2.1rem, 1.5rem + 2.8vw, 3.6rem);
  --step-4:  clamp(2.9rem, 1.8rem + 5vw, 6rem);
  --step-5:  clamp(2.5rem, 1rem + 6.6vw, 8rem);

  /* Space */
  --s-1: .5rem;  --s-2: 1rem;  --s-3: 1.5rem;  --s-4: 2.5rem;
  --s-5: 4rem;   --s-6: 6rem;  --s-7: 9rem;

  --maxw: 1240px;
  --radius: 14px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -.015em;
  margin: 0;
  color: var(--primary);
}

p { margin: 0 0 1em; }
a { color: inherit; }
img { display: block; max-width: 100%; }

.wrap { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }

.eyebrow {
  font-family: var(--sans);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--s-2);
  display: inline-flex;
  align-items: center;
  gap: .65rem;
}
.eyebrow::before {
  content: "";
  width: 28px; height: 2px;
  background: var(--accent);
  display: inline-block;
}

/* ---------- Buttons ---------- */
.btn {
  --bg: var(--accent);
  --fg: #fff;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--sans);
  font-weight: 700;
  font-size: var(--step-0);
  letter-spacing: .01em;
  padding: .95rem 1.6rem;
  border-radius: 999px;
  background: var(--bg);
  color: var(--fg);
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .25s;
  box-shadow: 0 10px 26px -12px rgba(232,112,42,.8);
  will-change: transform;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 18px 36px -14px rgba(232,112,42,.9); }
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(5px); }

.btn--ghost {
  --bg: transparent;
  --fg: var(--primary);
  border-color: rgba(14,58,86,.35);
  box-shadow: none;
}
.btn--ghost:hover { background: var(--primary); --fg: #fff; box-shadow: 0 14px 30px -16px rgba(14,58,86,.9); }

.btn--light {
  --bg: #fff; --fg: var(--primary);
  box-shadow: 0 10px 30px -14px rgba(0,0,0,.6);
}
.btn--light:hover { box-shadow: 0 18px 40px -16px rgba(0,0,0,.7); }

a:focus-visible, .btn:focus-visible {
  outline: 3px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  padding: 1.1rem 0;
  transition: background .4s var(--ease), padding .4s var(--ease), box-shadow .4s var(--ease);
}
.site-header.scrolled {
  background: rgba(11,34,48,.9);
  backdrop-filter: blur(10px);
  padding: .65rem 0;
  box-shadow: 0 1px 0 rgba(255,255,255,.08), 0 18px 40px -30px #000;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); }

/* Logo lockup */
.logo { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; }
.logo__mark {
  width: 42px; height: 42px;
  border-radius: 11px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  position: relative;
  overflow: hidden;
  flex: none;
}
.logo__mark::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 55%, var(--accent) 55%);
  opacity: .92;
}
.logo__mark span {
  position: relative; z-index: 1;
  font-family: var(--serif); font-weight: 700; font-size: 1.25rem;
  color: #fff; letter-spacing: -.04em;
}
.logo__text { display: flex; flex-direction: column; line-height: 1; }
.logo__name {
  font-family: var(--sans); font-weight: 800; letter-spacing: .02em;
  font-size: 1.04rem; color: #fff;
}
.logo__sub {
  font-size: .62rem; letter-spacing: .34em; text-transform: uppercase;
  color: var(--accent-2); margin-top: 4px; font-weight: 600;
}
.site-header:not(.scrolled) .logo__name { color: #fff; }

.nav { display: flex; align-items: center; gap: var(--s-4); }
.nav__links { display: flex; gap: var(--s-4); list-style: none; margin: 0; padding: 0; }
.nav__links a {
  text-decoration: none;
  font-weight: 600;
  font-size: var(--step--1);
  letter-spacing: .04em;
  color: rgba(255,255,255,.82);
  position: relative;
  padding: .3rem 0;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav__links a:hover { color: #fff; }
.nav__links a:hover::after { transform: scaleX(1); }

.nav__cta {
  display: inline-flex; align-items: center; gap: .5rem;
  text-decoration: none; font-weight: 700; font-size: var(--step--1);
  color: #fff; padding: .55rem 1.05rem; border-radius: 999px;
  background: var(--accent);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
  white-space: nowrap;
}
.nav__cta:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -12px rgba(232,112,42,.9); }

.nav-toggle { display: none; }

/* ============================================================
   HERO — editorial split with thermal gradient field
   ============================================================ */
.hero {
  position: relative;
  background: var(--primary-2);
  color: #fff;
  padding: clamp(8rem, 12vh, 12rem) 0 clamp(4rem, 8vh, 7rem);
  overflow: hidden;
  isolation: isolate;
}
/* thermal field: cool blue sweeping into warm flame */
.hero::before {
  content: "";
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(120% 90% at 85% 8%, rgba(232,112,42,.5), transparent 46%),
    radial-gradient(95% 80% at 8% 92%, rgba(43,124,168,.55), transparent 52%),
    linear-gradient(155deg, var(--primary) 0%, var(--primary-2) 60%, #07202F 100%);
}
/* fine isobar/contour lines for texture */
.hero::after {
  content: "";
  position: absolute; inset: -10%; z-index: -1;
  background-image: repeating-linear-gradient(115deg, rgba(255,255,255,.045) 0 1px, transparent 1px 46px);
  mask-image: radial-gradient(80% 80% at 70% 30%, #000, transparent 80%);
  pointer-events: none;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.5fr .92fr;
  gap: var(--s-5);
  align-items: center;
}

.hero__eyebrow {
  color: var(--accent-2);
  display: inline-flex; align-items: center; gap: .65rem;
  font-size: var(--step--1); font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  margin: 0 0 var(--s-3);
}
.hero__eyebrow::before { content: ""; width: 34px; height: 2px; background: var(--accent); }

.hero h1 {
  color: #fff;
  font-size: var(--step-5);
  letter-spacing: -.025em;
  margin-bottom: var(--s-3);
  overflow-wrap: break-word;
  hyphens: auto;
  text-wrap: balance;
}
.hero h1 .line { display: block; overflow: hidden; }
.hero__lede {
  font-size: var(--step-1);
  line-height: 1.5;
  color: #CCDAE3;
  max-width: 32ch;
  margin-bottom: var(--s-4);
  font-family: var(--serif);
  font-style: normal;
}
.hero__cta-row { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-3); align-items: center; }
.hero__phone {
  display: inline-flex; flex-direction: column;
  text-decoration: none; line-height: 1.1;
}
.hero__phone small { font-size: .7rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted-dark); }
.hero__phone strong { font-family: var(--serif); font-size: var(--step-1); color: #fff; font-weight: 600; }
.hero__phone:hover strong { color: var(--accent-2); }

/* hero side panel: the hot/cold "gauge" card */
.gauge {
  background:
    linear-gradient(160deg, rgba(255,255,255,.10), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 18px;
  padding: clamp(1.6rem, 2.4vw, var(--s-4));
  backdrop-filter: blur(8px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.16),
    0 30px 60px -34px rgba(0,0,0,.85);
  position: relative;
  overflow: hidden;
}
.gauge::before {
  content: ""; position: absolute; right: -30px; top: -34px;
  width: 150px; height: 150px; border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(232,112,42,.4), transparent 70%);
  pointer-events: none;
}
.gauge__title {
  position: relative;
  font-family: var(--serif);
  font-size: var(--step-1);
  line-height: 1.2;
  color: #fff;
  margin: 0 0 var(--s-3);
  max-width: 22ch;
}
.gauge__top { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: .7rem; position: relative; }
.gauge__top span { font-size: .64rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted-dark); font-weight: 700; }
.gauge__top span:first-child { color: var(--secondary); }
.gauge__top span:last-child { color: var(--accent-2); }
.gauge__bar {
  height: 6px; border-radius: 999px;
  background: linear-gradient(90deg, var(--secondary), #6fb0d0 42%, var(--accent-2) 70%, var(--accent));
  margin-bottom: var(--s-2);
  position: relative;
  box-shadow: 0 0 24px -6px rgba(232,112,42,.5);
}
.gauge__note { font-size: var(--step--1); color: var(--muted-dark); margin: 0 0 var(--s-4); line-height: 1.45; }
.gauge__row { display: flex; justify-content: space-between; gap: var(--s-2); position: relative; }
.gauge__stat { text-align: left; min-width: 0; }
.gauge__stat + .gauge__stat { padding-left: var(--s-2); border-left: 1px solid rgba(255,255,255,.12); }
.gauge__stat b { display: block; font-family: var(--serif); font-size: var(--step-2); color: #fff; font-weight: 600; font-variant-numeric: tabular-nums; }
.gauge__stat span { font-size: .72rem; color: var(--muted-dark); line-height: 1.3; display: block; margin-top: .15rem; }

.hero__ribbon {
  margin-top: var(--s-5);
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: var(--s-3);
  display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-4);
  font-size: var(--step--1); letter-spacing: .04em; color: var(--muted-dark);
}
.hero__ribbon span { display: inline-flex; align-items: center; gap: .5rem; }
.hero__ribbon span::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

/* ============================================================
   SECTION SHELL
   ============================================================ */
.section { padding: clamp(4.5rem, 9vh, var(--s-7)) 0; position: relative; }
.section--paper { background: var(--paper); }
.section-head { max-width: 56ch; margin-bottom: var(--s-5); }
.section-head h2 { font-size: var(--step-3); margin-bottom: var(--s-2); }
.section-head p { color: var(--muted); font-size: var(--step-1); }

/* ---------- ABOUT — asymmetric, big index number ---------- */
.about { background: var(--paper-2); }
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--s-5);
  align-items: start;
}
.about__intro { position: sticky; top: 6.5rem; }
.about__lead {
  font-family: var(--serif);
  font-size: var(--step-2);
  line-height: 1.25;
  color: var(--primary);
}
.about__facts {
  list-style: none;
  margin: var(--s-4) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  max-width: 22rem;
}
.about__facts li {
  display: flex;
  flex-direction: column;
  padding: var(--s-3) 0;
  border-bottom: 1px solid var(--line);
}
.about__facts b {
  font-family: var(--serif);
  font-size: var(--step-1);
  font-weight: 600;
  color: var(--primary);
  line-height: 1.15;
}
.about__facts span {
  font-size: var(--step--1);
  letter-spacing: .04em;
  color: var(--muted);
  margin-top: .3rem;
}
.about__body p { color: var(--muted); font-size: var(--step-1); }
.about__body p:last-child { margin-bottom: 0; }
.about__signature {
  margin-top: var(--s-3);
  font-family: var(--serif);
  font-size: var(--step-1);
  color: var(--ink);
}
.about__signature span { display: block; font-family: var(--sans); font-size: var(--step--1); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin-top: .35rem; }

.about__panel {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  padding: clamp(2rem, 4vw, 3.2rem);
  position: relative;
  overflow: hidden;
}
.about__panel::before {
  content: ""; position: absolute; right: -40px; top: -40px;
  width: 220px; height: 220px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(232,112,42,.55), transparent 70%);
}
.about__panel h3 { color: #fff; font-size: var(--step-2); margin-bottom: var(--s-3); position: relative; max-width: 22ch; }
.about__panel-list {
  list-style: none; margin: 0; padding: 0; position: relative;
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
}
.about__panel-list li {
  padding: var(--s-3) var(--s-3) var(--s-3) 0;
  border-top: 1px solid rgba(255,255,255,.14);
}
.about__panel-list li:nth-child(even) { padding-left: var(--s-3); border-left: 1px solid rgba(255,255,255,.14); }
.about__panel-list b {
  display: flex; align-items: baseline; gap: .55rem;
  font-family: var(--sans); font-size: var(--step-0); font-weight: 700;
  color: #fff; line-height: 1.2; letter-spacing: .005em;
}
.about__panel-list b::before {
  content: ""; flex: none; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent-2); transform: translateY(-1px);
}
.about__panel-list span { display: block; font-size: var(--step--1); color: var(--muted-dark); line-height: 1.45; margin-top: .4rem; }

/* ============================================================
   SERVICES — editorial stacked rows (NOT an icon grid)
   ============================================================ */
.services { background: var(--primary-2); color: #fff; }
.services .section-head h2 { color: #fff; }
.services .section-head p { color: var(--muted-dark); }
.services .eyebrow { color: var(--accent-2); }

.svc-list { display: grid; gap: 0; border-top: 1px solid rgba(255,255,255,.13); }
.svc {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  gap: var(--s-3);
  align-items: center;
  padding: clamp(1.6rem, 3.4vw, 2.6rem) var(--s-2);
  border-bottom: 1px solid rgba(255,255,255,.13);
  text-decoration: none;
  color: #fff;
  position: relative;
  transition: padding-left .4s var(--ease), background .4s var(--ease);
}
.svc::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--accent); transform: scaleY(0);
  transform-origin: top; transition: transform .4s var(--ease);
}
.svc:hover { background: rgba(255,255,255,.04); padding-left: var(--s-3); }
.svc:hover::before { transform: scaleY(1); }
.svc__num { font-family: var(--serif); font-size: var(--step-2); color: rgba(255,255,255,.32); font-weight: 600; font-variant-numeric: tabular-nums; transition: color .4s var(--ease); }
.svc:hover .svc__num { color: var(--accent-2); }
.svc__body h3 { color: #fff; font-size: var(--step-2); margin-bottom: .35rem; }
.svc__body p { color: var(--muted-dark); margin: 0; max-width: 52ch; font-size: var(--step-0); }
.svc__arrow {
  width: 48px; height: 48px; border-radius: 50%; flex: none;
  border: 1px solid rgba(255,255,255,.25);
  display: grid; place-items: center;
  transition: background .35s var(--ease), border-color .35s, transform .35s var(--ease);
  color: #fff;
}
.svc:hover .svc__arrow { background: var(--accent); border-color: var(--accent); transform: rotate(-45deg); }
.svc__arrow svg { width: 18px; height: 18px; }

/* ============================================================
   PROCESS — offset numbered steps
   ============================================================ */
.process__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-4); }
.step {
  border-top: 3px solid var(--primary);
  padding-top: var(--s-3);
  position: relative;
}
.step::before {
  content: ""; position: absolute; top: -3px; left: 0;
  width: 64px; height: 3px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .5s var(--ease);
}
.step.in::before { transform: scaleX(1); }
.step:nth-child(2) { margin-top: var(--s-5); border-top-color: var(--secondary); }
.step:nth-child(3) { margin-top: calc(var(--s-5) * 2); border-top-color: var(--accent); }
.step__k { display: block; font-family: var(--serif); font-size: var(--step--1); letter-spacing: .2em; text-transform: uppercase; color: var(--accent); font-weight: 700; margin-top: var(--s-2); }
.step h3 { font-size: var(--step-2); margin: var(--s-1) 0 var(--s-1); }
.step p { color: var(--muted); margin: 0; }

/* ============================================================
   CTA / CONTACT — split warm panel
   ============================================================ */
.contact { background: var(--paper); }
.contact__card {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 40px 80px -50px rgba(11,34,48,.7);
}
.contact__left {
  background: linear-gradient(155deg, var(--primary), var(--primary-2));
  color: #fff;
  padding: clamp(2.4rem, 5vw, 4.2rem);
  position: relative;
  overflow: hidden;
}
.contact__left::after {
  content: ""; position: absolute; left: -60px; bottom: -60px;
  width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle at 60% 40%, rgba(43,124,168,.6), transparent 70%);
}
.contact__left h2 { color: #fff; font-size: var(--step-3); margin-bottom: var(--s-2); position: relative; }
.contact__left p { color: var(--muted-dark); font-size: var(--step-1); position: relative; max-width: 34ch; }
.contact__right {
  background: var(--accent);
  color: #fff;
  padding: clamp(2.4rem, 5vw, 4.2rem);
  display: flex; flex-direction: column; justify-content: center; gap: var(--s-3);
}
.contact__row { display: block; text-decoration: none; color: #fff; }
.contact__row small { display: block; font-size: .7rem; letter-spacing: .2em; text-transform: uppercase; opacity: .85; margin-bottom: .25rem; }
.contact__row strong { font-family: var(--serif); font-size: var(--step-2); font-weight: 600; line-height: 1.1; }
.contact__row + .contact__row { border-top: 1px solid rgba(255,255,255,.3); padding-top: var(--s-3); }
.contact__row:hover strong { text-decoration: underline; text-underline-offset: 4px; }
.contact__btns { margin-top: var(--s-2); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: #07202F; color: var(--muted-dark); padding: var(--s-6) 0 var(--s-3); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--s-5); margin-bottom: var(--s-5); }
.footer-grid h4 { color: #fff; font-family: var(--sans); font-size: var(--step--1); letter-spacing: .16em; text-transform: uppercase; margin: 0 0 var(--s-3); }
.footer-grid p { margin: 0 0 .4rem; }
.footer-grid a { color: var(--muted-dark); text-decoration: none; }
.footer-grid a:hover { color: var(--accent-2); }
.footer-blurb { color: var(--muted-dark); max-width: 34ch; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: var(--s-3); display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-4); justify-content: space-between; font-size: var(--step--1); }

/* spec footer (mandatory) */
.spec-footer {
  background: #051722;
  color: #7E94A1;
  text-align: center;
  font-size: .8rem;
  padding: 1.3rem var(--s-3);
  line-height: 1.6;
}
.spec-footer a { color: var(--accent-2); }

/* ============================================================
   MOTION
   ============================================================ */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }

/* hero load reveal — pure CSS keyframes so the hero is NEVER stuck
   invisible waiting on JS; it animates the instant it paints. */
@keyframes heroRise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}
.js .hero [data-load] { opacity: 0; animation: heroRise .9s var(--ease) both; }
.js .hero [data-load="1"] { animation-delay: .06s; }
.js .hero [data-load="2"] { animation-delay: .18s; }
.js .hero [data-load="3"] { animation-delay: .32s; }
.js .hero [data-load="4"] { animation-delay: .46s; }
.js .hero [data-load="5"] { animation-delay: .60s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 920px) {
  .hero__grid { grid-template-columns: 1fr; gap: var(--s-4); align-items: start; }
  .gauge { max-width: 460px; }
  .about__grid { grid-template-columns: 1fr; gap: var(--s-4); }
  .about__intro { position: static; top: auto; }
  .about__facts { max-width: none; }
  .process__grid { grid-template-columns: 1fr; gap: var(--s-4); }
  .step, .step:nth-child(2), .step:nth-child(3) { margin-top: 0; }
  .contact__card { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--s-4); }
}

@media (max-width: 720px) {
  .nav__links, .nav__cta { display: none; }
  .nav-toggle {
    display: inline-flex; align-items: center; gap: .5rem;
    background: var(--accent); color: #fff; border: 0;
    font-family: var(--sans); font-weight: 700; font-size: var(--step--1);
    padding: .55rem 1rem; border-radius: 999px; cursor: pointer; text-decoration: none;
  }
  .svc { grid-template-columns: 2.6rem 1fr; }
  .svc__arrow { display: none; }
  .footer-grid { grid-template-columns: 1fr; }

  /* keep the thermal gauge card fully inside the viewport */
  .gauge { max-width: none; padding: 1.4rem 1.3rem; }
  .gauge__title { font-size: var(--step-0); }
  .gauge__stat b { font-size: var(--step-1); }
  .gauge__stat span { font-size: .64rem; line-height: 1.25; }
  .gauge__stat + .gauge__stat { padding-left: .7rem; }
  .gauge__row { gap: .5rem; }
}

@media (max-width: 400px) {
  .gauge__row { gap: .4rem; }
  .gauge__stat + .gauge__stat { padding-left: .5rem; }
  .gauge__stat span { font-size: .6rem; }
}

@media (max-width: 560px) {
  .hero { padding-top: clamp(7rem, 22vw, 9rem); }
  .hero h1 { font-size: clamp(2.5rem, 10.5vw, 3.1rem); line-height: 1.05; }
  .hero h1 .line { display: inline; }
  .about__panel-list { grid-template-columns: 1fr; }
  .about__panel-list li,
  .about__panel-list li:nth-child(even) { padding: var(--s-3) 0; padding-left: 0; border-left: 0; }
  .about__panel-list li:first-child { border-top: 0; padding-top: 0; }
}

@media (max-width: 380px) {
  .hero h1 { font-size: 2.35rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .hero [data-load] { opacity: 1 !important; transform: none !important; transition: none !important; }
  * { animation: none !important; }
}