@font-face{font-family:"Inter";src:url(assets/fonts/inter-latin.woff2) format("woff2-variations"),url(assets/fonts/inter-latin.woff2) format("woff2");font-weight:100 900;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+20BD,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --ink:#1b0624;
  --espresso:#160f0c;
  --ash:#766a7c;
  --graphite:#444;
  --stone:#898683;
  --charcoal:#292421;
  --paper:#fff;
  --linen:#f7f7f5;
  --bone:#edece7;
  --mist:#eee;
  --ring:rgba(0,0,0,.05) 0 0 0 1px inset;
  --hair:rgba(27,6,36,.12);
  --font:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --gut:clamp(16px,4vw,40px);
  --gap:clamp(80px,10vw,120px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--linen);color:var(--ink);font:400 18px/1.5 var(--font);font-feature-settings:"cv03","cv04","cv09","cv11";-webkit-font-smoothing:antialiased}
h1,h2,h3,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img,svg{display:block}
:focus-visible{outline:2px solid var(--espresso);outline-offset:2px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

h1{font-weight:400;font-size:clamp(44px,5.8vw,80px);line-height:1;letter-spacing:-.06em}
h2{font-weight:400;font-size:clamp(32px,4vw,44px);line-height:1.1;letter-spacing:-.05em}
h3{font-weight:500;font-size:24px;line-height:1.3;letter-spacing:-.02em}
.lead{color:var(--graphite);margin-top:16px;max-width:42ch}

.wrap{max-width:1200px;margin-inline:auto;padding-inline:var(--gut)}
.sec{padding-block:calc(var(--gap)/2)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;font:inherit;font-size:15px;line-height:1.2;padding:12px 20px;border-radius:999px;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background-color .15s,color .15s,border-color .15s}
.btn--fill{background:var(--espresso);color:var(--paper)}
.btn--fill:hover{background:var(--charcoal)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--stone)}
.btn--ghost:hover{border-color:var(--espresso)}
.btn--paper{background:var(--paper);color:var(--ink)}
.btn--paper:hover{background:var(--bone)}
.btn--lg{font-size:17px;padding:20px 28px;border-radius:60px}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:var(--linen)}
.nav__in{max-width:1200px;margin-inline:auto;padding-inline:var(--gut);height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:9px;font-weight:500;font-size:20px;letter-spacing:-.02em;color:var(--ink)}
.nav__links{display:flex;gap:32px;font-size:15px;color:var(--charcoal)}
.nav__links a:hover{color:var(--ash)}
.nav__act{display:flex;align-items:center;gap:20px}
.nav__tel{font-size:15px;font-feature-settings:"tnum";white-space:nowrap}
.nav__toggle,.nav__call{display:none}

/* hero */
.hero{position:relative;overflow:hidden;height:clamp(820px,calc(100svh - 72px),1000px);text-align:center}
.hero__art{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 100%}
.hero__in{position:relative;max-width:1080px;margin-inline:auto;padding:clamp(24px,5vh,56px) var(--gut) 0}
.pill{display:inline-block;background:var(--espresso);color:var(--paper);font-size:13px;line-height:1.2;padding:7px 14px;border-radius:999px}
.hero h1{margin-top:24px}
.hero h1 span{display:inline-block;text-wrap:balance}
.hero__sub{margin:24px auto 0;max-width:44ch;color:var(--graphite);text-wrap:balance}
.hero__cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
@media (prefers-reduced-motion:no-preference){
  .hero__art{animation:develop 1.4s ease-out both}
  @keyframes develop{from{opacity:0;filter:saturate(.35) blur(10px)}to{opacity:1;filter:none}}
}

/* equipment strip */
.brands{max-width:1200px;margin:0 auto;padding:40px var(--gut) 0;text-align:center}
.brands p{font-size:14px;color:var(--ash)}
.brands ul{margin-top:16px;display:flex;flex-wrap:wrap;justify-content:center;gap:12px 44px;font-size:20px;font-weight:500;letter-spacing:-.03em;color:var(--ash)}

/* triage */
.triage{padding-top:var(--gap)}
.triage__grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,80px);align-items:start}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px}
.tab{font:inherit;font-size:15px;line-height:1.2;color:var(--ink);background:var(--paper);box-shadow:var(--ring);border:0;border-radius:999px;padding:12px 18px;cursor:pointer;transition:background-color .15s,color .15s}
.tab:hover{background:var(--bone)}
.tab[aria-selected=true]{background:var(--espresso);color:var(--paper);box-shadow:none}
.tab--gas{box-shadow:inset 0 0 0 1px var(--espresso)}
.panels{min-height:440px}
.panel{background:var(--paper);border-radius:24px;box-shadow:var(--ring);padding:clamp(24px,4vw,48px)}
.panel + .panel{margin-top:16px}
.js .panel + .panel{margin-top:0}
.js .panel{animation:panel .22s ease-out}
.panel[hidden]{display:none}
.panel h3{font-weight:400;font-size:clamp(28px,3vw,36px);line-height:1.15;letter-spacing:-.04em;text-wrap:balance}
.panel ol{margin-block:28px 32px;counter-reset:n}
.panel li{counter-increment:n;position:relative;padding:14px 0 14px 40px;border-top:1px solid var(--hair);color:var(--graphite)}
.panel li::before{content:counter(n);position:absolute;left:0;top:14px;color:var(--ash);font-feature-settings:"tnum"}
.panel--gas h3 a{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:.12em}
.panel--gas ol{margin-bottom:0}
@keyframes panel{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.js .panel{animation:none}html{scroll-behavior:auto}}

/* service cards */
.cards{margin-top:40px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.card{background:var(--paper);border-radius:16px;padding:32px}
.ico{width:32px;height:32px;fill:none;stroke:var(--charcoal);stroke-width:1.25;stroke-linecap:round;stroke-linejoin:round}
.card h3{margin-top:24px}
.card ul{margin-top:16px;font-size:16px;line-height:1.6;color:var(--graphite)}
.card li + li{margin-top:6px}

/* stats */
.stats{padding-block:calc(var(--gap)/2)}
.stats__row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.stats b{display:block;font-weight:400;font-size:clamp(56px,6.2vw,80px);line-height:1;letter-spacing:-.06em;white-space:nowrap}
.stats span{display:block;margin-top:12px;font-size:14px;color:var(--ash);max-width:26ch}

/* two-column sections */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,80px);align-items:start}
.split__head{position:sticky;top:112px}

.prices{width:100%;border-collapse:collapse;font-size:17px}
.prices th{font-weight:500;font-size:20px;letter-spacing:-.01em;text-align:left;padding:0 0 12px}
.prices tbody + tbody th{padding-top:40px}
.prices td{padding:12px 0;border-top:1px solid var(--hair);color:var(--graphite)}
.prices td:last-child{text-align:right;color:var(--ink);white-space:nowrap;font-feature-settings:"tnum";padding-left:16px}

.steps{counter-reset:s}
.steps li{counter-increment:s;display:grid;grid-template-columns:72px minmax(0,1fr);padding-block:24px;border-top:1px solid var(--hair)}
.steps li:first-child{border-top:0;padding-top:0}
.steps li::before{content:counter(s);grid-row:span 2;font-size:32px;line-height:1.2;letter-spacing:-.03em;color:var(--ash)}
.steps p{margin-top:8px;color:var(--graphite);font-size:16px;line-height:1.6;max-width:52ch}

/* form */
.bigtel{display:inline-block;margin-top:32px;font-size:clamp(28px,3vw,32px);letter-spacing:-.03em;font-feature-settings:"tnum";white-space:nowrap}
.form{background:var(--paper);border-radius:24px;box-shadow:var(--ring);padding:clamp(24px,4vw,40px);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px}
.field--w{grid-column:1/-1}
.field label{display:block;font-size:14px;color:var(--graphite);margin-bottom:6px}
.field input,.field select,.field textarea{display:block;width:100%;font:inherit;font-size:16px;color:var(--ink);background-color:var(--mist);border:1px solid var(--stone);border-radius:8px;padding:12px 14px;appearance:none}
.field select{padding-right:40px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23444' stroke-width='1.3'%3E%3Cpath d='m3.5 6 4.5 4.5L12.5 6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px}
.field textarea{resize:vertical}
.field ::placeholder{color:var(--ash);opacity:1}
.field input:focus,.field select:focus,.field textarea:focus{outline:1px solid var(--espresso);outline-offset:0;border-color:var(--espresso)}
.field [aria-invalid=true]{border-color:var(--espresso);outline:1px solid var(--espresso)}
.err{margin-top:6px;font-size:14px;line-height:1.4;font-weight:500}
.form__end{display:flex;align-items:center;gap:24px;margin-top:4px}
.form__legal{font-size:14px;line-height:1.4;color:var(--ash)}
.form__msg{background:var(--bone);border-radius:16px;padding:16px 20px;font-size:16px}
.form__msg a{text-decoration:underline;white-space:nowrap}

/* footer */
.foot{margin-top:calc(var(--gap)/2);background:var(--bone);padding-block:48px}
.foot__in{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;align-items:start}
.foot__col{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--graphite)}
.foot__col a:hover{color:var(--ink)}

/* tablet and phone */
@media (max-width:1020px){
  .nav__tel{display:none}
  .nav__toggle{display:inline-flex}
  .nav__links{display:none;position:absolute;left:0;right:0;top:72px;background:var(--linen);flex-direction:column;gap:0;padding:0 var(--gut) 16px;font-size:18px}
  .nav__links.is-open{display:flex}
  .nav__links a{padding-block:12px}
  .nav__act{gap:8px}
}
@media (max-width:860px){
  .triage__grid,.split{grid-template-columns:minmax(0,1fr)}
  .split__head{position:static}
  .panels{min-height:0}
  .cards{grid-template-columns:minmax(0,1fr)}
  .foot__in{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot__in .logo{grid-column:1/-1}
}
@media (max-width:620px){
  body{font-size:17px}
  .nav__in{gap:12px}
  .nav__cta{display:none}
  .nav__call{display:inline-flex}
  h1{letter-spacing:-.055em}
  .hero{height:auto;min-height:860px}
  .hero__art{object-position:63% 100%}
  .hero__cta .btn{width:100%}
  .stats__row{grid-template-columns:minmax(0,1fr)}
  .brands ul{gap:8px 24px;font-size:17px}
  .form{grid-template-columns:minmax(0,1fr)}
  .form__end{flex-direction:column;align-items:stretch;gap:12px}
  .steps li{grid-template-columns:44px minmax(0,1fr)}
  .steps li::before{font-size:24px}
  .card{padding:24px}
}