:root {
  --ink: #102632;
  --ink-soft: #183743;
  --blue: #317fc0;
  --blue-dark: #1f659f;
  --red: #ed252b;
  --fog: #f4f7f8;
  --white: #ffffff;
  --steel: #6c7d86;
  --line: #d9e2e6;
  --font-display: "Bahnschrift Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --font-body: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-utility: Consolas, "SFMono-Regular", monospace;
  --shell: min(1180px, calc(100% - 40px));
  --shadow: 0 24px 70px rgba(13, 38, 50, 0.14);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
html[data-theme="dark"] { color-scheme: dark; }
html[data-theme="light"] { color-scheme: light; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.nav-open { overflow: hidden; }

img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, textarea { font: inherit; }

:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 4px;
}

.shell { width: var(--shell); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.topbar {
  color: #dce8ed;
  background: var(--ink);
  font-family: var(--font-utility);
  font-size: 0.72rem;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.topbar__inner {
  min-height: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.topbar p { margin: 0; }
.topbar a { text-decoration: none; }
.topbar a:hover { color: var(--white); }

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(217, 226, 230, 0.8);
  backdrop-filter: blur(16px);
}

.site-header__inner {
  min-height: 86px;
  display: grid;
  grid-template-columns: 190px 1fr auto;
  align-items: center;
  gap: 34px;
}

.header-actions { display: flex; align-items: stretch; gap: 10px; }
.theme-toggle { display: grid; width: 48px; min-width: 48px; place-items: center; padding: 0; border: 1px solid var(--line); color: var(--ink); background: transparent; cursor: pointer; }
.theme-toggle svg { position: absolute; width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; transition: transform 180ms ease, opacity 180ms ease; }
.theme-toggle__sun { opacity: 0; transform: rotate(-30deg) scale(.7); }
.theme-toggle__moon { opacity: 1; transform: scale(1); }
[data-theme="light"] .theme-toggle__sun { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-toggle__moon { opacity: 0; transform: rotate(30deg) scale(.7); }

.brand { display: inline-flex; width: 178px; text-decoration: none; }
.brand img { width: 100%; height: 70px; object-fit: contain; }

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(16px, 2.2vw, 30px);
}

.site-nav a {
  position: relative;
  padding-block: 9px;
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.header-call {
  display: grid;
  padding: 10px 18px 11px;
  color: var(--white);
  background: var(--red);
  text-decoration: none;
  line-height: 1.15;
}

.header-call span { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; }
.header-call strong { margin-top: 3px; font-size: 1rem; }
.header-call:hover { background: #d71f25; }
.nav-toggle { display: none; }

.hero {
  position: relative;
  overflow: hidden;
  min-height: 720px;
  background:
    linear-gradient(90deg, rgba(49, 127, 192, 0.05) 1px, transparent 1px) 0 0 / 76px 76px,
    linear-gradient(rgba(49, 127, 192, 0.05) 1px, transparent 1px) 0 0 / 76px 76px,
    var(--fog);
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 36%;
  height: 100%;
  background: var(--ink);
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.88fr);
  align-items: center;
  gap: clamp(50px, 7vw, 100px);
  min-height: 720px;
  padding-block: 64px 74px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
  color: var(--blue-dark);
  font-family: var(--font-utility);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow span { width: 38px; height: 2px; background: var(--red); }
.eyebrow--light { color: #cfe0e8; }

h1, h2, h3 {
  margin-top: 0;
  font-family: var(--font-display);
  font-stretch: condensed;
  line-height: 0.98;
}

h1 {
  max-width: 740px;
  margin-bottom: 28px;
  font-size: clamp(4rem, 7vw, 6.85rem);
  font-weight: 760;
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(3rem, 5vw, 5.2rem);
  letter-spacing: -0.045em;
}

.hero__lead {
  max-width: 660px;
  margin: 0;
  color: #425963;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 35px; }

.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 13px 22px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.button svg { width: 22px; fill: none; stroke: currentColor; stroke-width: 2; }
.button:hover { transform: translateY(-2px); }
.button--primary { color: var(--white); background: var(--red); }
.button--primary:hover { background: #d71f25; }
.button--ghost { border-color: #b8c6cc; background: rgba(255,255,255,0.6); }
.button--ghost:hover { border-color: var(--ink); }
.button--light { color: var(--ink); background: var(--white); }

.hero__proof {
  display: flex;
  gap: clamp(22px, 4vw, 46px);
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid #cad7dc;
}

.hero__proof div { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 10px; }
.hero__proof strong { color: var(--blue-dark); font-family: var(--font-display); font-size: 2.1rem; line-height: 1; }
.hero__proof span { max-width: 95px; color: #536872; font-size: 0.76rem; line-height: 1.3; }

.hero__visual { position: relative; min-height: 555px; }
.hero__visual figure { margin: 0; overflow: hidden; background: #dce5e8; box-shadow: var(--shadow); }
.hero__visual img { width: 100%; height: 100%; object-fit: cover; }

.hero__main-photo {
  position: absolute;
  top: 0;
  right: 0;
  width: 76%;
  height: 500px;
}

.hero__main-photo img { object-position: center 66%; }
.hero__main-photo figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 10px 15px;
  color: var(--white);
  background: var(--blue-dark);
  font-family: var(--font-utility);
  font-size: 0.67rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hero__secondary-photo {
  position: absolute;
  z-index: 2;
  bottom: 0;
  left: 0;
  width: 46%;
  height: 215px;
  border: 9px solid var(--fog);
}

.hero__pipe {
  position: absolute;
  z-index: 3;
  right: -15px;
  bottom: -12px;
  width: 210px;
  overflow: visible;
  fill: var(--red);
}

.hero__pipe-shadow, .hero__pipe-line { fill: none; stroke-linecap: square; }
.hero__pipe-shadow { stroke: rgba(16,38,50,.35); stroke-width: 12; }
.hero__pipe-line { stroke: var(--white); stroke-width: 4; }
.hero__tag {
  position: absolute;
  top: 42px;
  left: 6px;
  z-index: 4;
  padding: 8px 12px;
  color: var(--ink);
  background: var(--white);
  font-family: var(--font-utility);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: rotate(-90deg) translateX(-100%);
  transform-origin: top left;
}

.trust-strip { color: var(--white); background: var(--blue-dark); }
.trust-strip__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-strip p { display: flex; align-items: center; gap: 14px; margin: 0; padding: 22px 25px; border-left: 1px solid rgba(255,255,255,.17); font-size: 0.84rem; font-weight: 700; }
.trust-strip p:last-child { border-right: 1px solid rgba(255,255,255,.17); }
.trust-strip span { color: #a9d2ed; font-family: var(--font-utility); font-size: 0.68rem; }

.section { padding-block: clamp(85px, 10vw, 145px); }
.section-heading { margin-bottom: 60px; }
.section-heading--split { display: grid; grid-template-columns: 1.3fr .7fr; align-items: end; gap: 70px; }
.section-heading h2 { margin-bottom: 0; }
.section-heading > p { max-width: 520px; margin: 0 0 6px; color: #5d7079; font-size: 1.03rem; }

.services { background: var(--white); }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.service-card { position: relative; min-height: 485px; padding: clamp(34px, 4vw, 55px); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); transition: transform 200ms ease, box-shadow 200ms ease; }
.service-card:hover { z-index: 2; transform: translateY(-5px); box-shadow: 0 22px 60px rgba(16,38,50,.12); }
.service-card__icon { width: 68px; height: 68px; margin-bottom: 42px; color: var(--blue); }
.service-card__icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: square; stroke-linejoin: miter; }
.service-card--heat .service-card__icon, .service-card--gas .service-card__icon { color: var(--red); }
.service-card__label { margin: 0 0 8px; color: var(--steel); font-family: var(--font-utility); font-size: 0.7rem; letter-spacing: .11em; text-transform: uppercase; }
.service-card h3 { margin-bottom: 26px; font-size: clamp(2.3rem, 4vw, 3.5rem); letter-spacing: -.035em; }
.service-card ul { display: grid; gap: 9px; margin: 0 0 30px; padding: 0; list-style: none; color: #4d626b; }
.service-card li { position: relative; padding-left: 18px; }
.service-card li::before { content: ""; position: absolute; top: .78em; left: 0; width: 7px; height: 2px; background: var(--blue); }
.service-card--heat li::before { background: var(--red); }
.service-card__note { min-height: 158px; margin: 0 0 30px; color: #4d626b; }
.service-card > a { position: absolute; bottom: 45px; left: clamp(34px, 4vw, 55px); font-size: .88rem; font-weight: 750; text-decoration: none; }
.service-card > a span { display: inline-block; margin-left: 8px; color: var(--red); transition: transform 180ms ease; }
.service-card > a:hover span { transform: translateX(5px); }

.projects { background: var(--fog); }
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 260px; gap: 16px; }
.project { position: relative; overflow: hidden; padding: 0; border: 0; color: var(--white); background: var(--ink); cursor: zoom-in; text-align: left; }
.project--tall { grid-row: span 2; }
.project--wide { grid-column: span 2; }
.project img { width: 100%; height: 100%; object-fit: cover; transition: transform 500ms cubic-bezier(.2,.7,.2,1), opacity 300ms ease; }
.project:hover img { transform: scale(1.045); opacity: .78; }
.project::after { content: ""; position: absolute; inset: 35% 0 0; background: linear-gradient(transparent, rgba(8,25,33,.78)); pointer-events: none; }
.project span { position: absolute; z-index: 2; right: 24px; bottom: 20px; left: 24px; font-size: .92rem; font-weight: 650; }
.project b { display: block; margin-bottom: 5px; color: #a7d4f2; font-family: var(--font-utility); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; }
.replacement-note { margin: 20px 0 0; color: var(--steel); font-size: .76rem; }

.associations { overflow: hidden; color: var(--white); background: var(--ink); }
.associations__grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(50px, 8vw, 110px); }
.blueprint { position: relative; min-height: 520px; border: 1px solid rgba(255,255,255,.12); background: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px) 0 0 / 32px 32px, linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px) 0 0 / 32px 32px; }
.blueprint svg { position: absolute; inset: 25px; width: calc(100% - 50px); height: calc(100% - 50px); fill: none; stroke: rgba(173,210,231,.35); stroke-width: 2; }
.blueprint .blueprint__accent { stroke: var(--red); stroke-width: 5; }
.blueprint p { position: absolute; right: 22px; bottom: 13px; margin: 0; color: #9eb8c3; font-family: var(--font-utility); font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; }
.associations__copy h2 { color: var(--white); }
.associations__copy > p:not(.eyebrow) { max-width: 590px; color: #bdcdd4; }
.check-list { display: grid; gap: 13px; margin: 30px 0 38px; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 29px; }
.check-list li::before { content: ""; position: absolute; top: .52em; left: 0; width: 12px; height: 6px; border-bottom: 2px solid var(--red); border-left: 2px solid var(--red); transform: rotate(-45deg); }

.about { background: var(--white); }
.about__grid { display: grid; grid-template-columns: 1fr .9fr; gap: clamp(55px, 10vw, 130px); align-items: center; }
.about__lead { color: #334d58; font-size: 1.25rem; line-height: 1.55; }
.about__copy > p:last-child { color: #60727a; }
.process { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.process li { display: grid; grid-template-columns: 78px 1fr; gap: 26px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.process li > span { color: var(--blue); font-family: var(--font-utility); font-size: .75rem; font-weight: 700; }
.process h3 { margin-bottom: 8px; font-size: 2.1rem; }
.process p { margin: 0; color: var(--steel); }

.contact { color: var(--white); background: var(--blue-dark); }
.contact__inner { display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(50px, 8vw, 110px); align-items: center; min-height: 450px; padding-block: 80px; }
.contact h2 { margin-bottom: 22px; color: var(--white); }
.contact p:not(.eyebrow) { max-width: 560px; margin: 0; color: #d1e4ef; }
.contact__actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.contact-link { display: grid; min-height: 225px; align-content: space-between; padding: 30px; border: 1px solid rgba(255,255,255,.28); text-decoration: none; transition: background-color 180ms ease, transform 180ms ease; }
.contact-link + .contact-link { border-left: 0; }
.contact-link:hover { z-index: 2; background: rgba(255,255,255,.09); transform: translateY(-3px); }
.contact-link--phone { background: var(--red); border-color: var(--red); }
.contact-link--phone:hover { background: #db2026; }
.contact-link span { color: #d5e6ef; font-family: var(--font-utility); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; }
.contact-link strong { overflow-wrap: anywhere; font-family: var(--font-display); font-size: clamp(1.4rem, 2.1vw, 2.05rem); line-height: 1.08; }
.contact-link:not(.contact-link--phone) strong { font-size: clamp(1.05rem, 1.55vw, 1.55rem); }
.contact-link b { font-size: .84rem; }

.site-footer { color: #b7c7ce; background: #091820; }
.site-footer__inner { min-height: 150px; display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 45px; }
.brand--footer { width: 145px; }
.brand--footer img { height: 54px; }
.site-footer p { margin: 0; font-size: .77rem; }

.mobile-call { display: none; }

.lightbox {
  width: min(1000px, calc(100% - 32px));
  max-height: calc(100vh - 32px);
  padding: 0;
  border: 0;
  color: var(--white);
  background: var(--ink);
  box-shadow: 0 30px 100px rgba(0,0,0,.45);
}

.lightbox::backdrop { background: rgba(5,18,24,.88); backdrop-filter: blur(5px); }
.lightbox img { width: 100%; max-height: calc(100vh - 120px); object-fit: contain; }
.lightbox p { margin: 0; padding: 16px 22px; font-weight: 650; }
.lightbox__close { position: absolute; z-index: 2; top: 12px; right: 12px; width: 44px; height: 44px; border: 0; border-radius: 50%; color: var(--ink); background: var(--white); font-size: 1.8rem; line-height: 1; cursor: pointer; }

/* Pagini de servicii */
.service-hero {
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(49,127,192,.055) 1px, transparent 1px) 0 0 / 70px 70px,
    linear-gradient(rgba(49,127,192,.055) 1px, transparent 1px) 0 0 / 70px 70px,
    var(--fog);
}

.service-hero__grid { display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: clamp(50px, 8vw, 110px); min-height: 660px; padding-block: 70px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; color: var(--steel); font-family: var(--font-utility); font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; }
.breadcrumbs a { text-decoration: none; }
.breadcrumbs a:hover { color: var(--blue); }
.service-hero h1 { margin-bottom: 28px; font-size: clamp(4.2rem, 7.2vw, 7.4rem); }
.service-hero__intro { max-width: 680px; margin: 0; color: #4d626b; font-size: 1.16rem; }
.service-hero__visual { position: relative; min-height: 510px; }
.service-hero__photo { position: absolute; overflow: hidden; margin: 0; background: #cfdce2; box-shadow: var(--shadow); }
.service-hero__photo img { width: 100%; height: 100%; object-fit: cover; }
.service-hero__photo--main { inset: 0 0 55px 18%; }
.service-hero__photo--main img { object-position: center; }
.service-hero__photo--small { z-index: 2; bottom: 0; left: 0; width: 45%; height: 210px; border: 8px solid var(--fog); }
.service-hero__marker { position: absolute; z-index: 3; right: -12px; bottom: 24px; padding: 10px 14px; color: #fff; background: var(--blue-dark); font-family: var(--font-utility); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }
.service-page--heat .service-hero__marker,
.service-page--gas .service-hero__marker { background: var(--red); }

.service-diagram { position: absolute; inset: 0; display: grid; place-items: center; border: 1px solid var(--line); background: rgba(255,255,255,.55); }
.service-diagram svg { width: 75%; max-height: 360px; fill: none; stroke: var(--blue); stroke-width: 2; }
.service-page--gas .service-diagram svg { stroke: var(--red); }
.service-diagram__label { position: absolute; bottom: 14px; left: 18px; margin: 0; color: var(--steel); font-family: var(--font-utility); font-size: .68rem; letter-spacing: .07em; text-transform: uppercase; }

.facts-bar { color: #fff; background: var(--blue-dark); }
.service-page--heat .facts-bar,
.service-page--gas .facts-bar { background: #b92127; }
.facts-bar__grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.facts-bar p { display: grid; margin: 0; padding: 23px 28px; border-left: 1px solid rgba(255,255,255,.2); line-height: 1.25; }
.facts-bar p:last-child { border-right: 1px solid rgba(255,255,255,.2); }
.facts-bar strong { font-family: var(--font-display); font-size: 1.55rem; }
.facts-bar span { margin-top: 5px; color: rgba(255,255,255,.72); font-size: .73rem; }

.service-detail { background: var(--white); }
.service-detail__grid { display: grid; grid-template-columns: 1fr 340px; gap: clamp(50px, 8vw, 110px); }
.service-detail h2 { font-size: clamp(2.9rem, 4.8vw, 4.7rem); }
.service-detail h3 { margin: 42px 0 18px; font-size: 2.35rem; }
.service-detail__lead { color: #3e5660; font-size: 1.2rem; }
.work-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; margin: 32px 0 10px; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.work-list li { position: relative; min-height: 88px; display: flex; align-items: center; padding: 18px 24px 18px 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); color: #4f646d; }
.work-list li:nth-child(2n) { border-right: 0; }
.work-list li::before { content: ""; position: absolute; left: 8px; width: 10px; height: 3px; background: var(--blue); }
.service-page--heat .work-list li::before,
.service-page--gas .work-list li::before { background: var(--red); }
.detail-note { margin-top: 38px; padding: 25px 28px; border-left: 4px solid var(--blue); background: var(--fog); color: #50656e; }
.service-page--heat .detail-note,
.service-page--gas .detail-note { border-left-color: var(--red); }
.detail-note strong { display: block; margin-bottom: 5px; color: var(--ink); }
.service-aside { align-self: start; position: sticky; top: 120px; }
.service-aside__box { padding: 30px; color: #fff; background: var(--ink); }
.service-aside__box + .service-aside__box { margin-top: 14px; }
.service-aside__box--accent { background: var(--blue-dark); }
.service-page--heat .service-aside__box--accent,
.service-page--gas .service-aside__box--accent { background: var(--red); }
.service-aside__box span { color: #b8ccd5; font-family: var(--font-utility); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }
.service-aside__box h3 { margin: 16px 0 25px; font-size: 2.3rem; }
.service-aside__box p { color: #c3d1d7; }
.service-aside__box a { display: inline-flex; margin-top: 10px; font-weight: 750; text-decoration: none; }

.related-services { background: var(--fog); }
.related-services h2 { font-size: clamp(2.7rem, 4.5vw, 4.3rem); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.related-card { min-height: 220px; display: grid; align-content: space-between; padding: 28px; border: 1px solid var(--line); background: var(--white); text-decoration: none; transition: transform 180ms ease, border-color 180ms ease; }
.related-card:hover { transform: translateY(-4px); border-color: var(--blue); }
.related-card span { color: var(--steel); font-family: var(--font-utility); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }
.related-card strong { font-family: var(--font-display); font-size: 2rem; line-height: 1; }
.related-card b { color: var(--red); }

[data-theme="dark"] .service-hero__intro,
[data-theme="dark"] .service-detail__lead,
[data-theme="dark"] .work-list li,
[data-theme="dark"] .detail-note { color: #a4b6be; }
[data-theme="dark"] .service-diagram { background: rgba(255,255,255,.025); }
[data-theme="dark"] .service-detail { background: #0b1a21; }
[data-theme="dark"] .detail-note { background: #102630; }
[data-theme="dark"] .detail-note strong { color: #edf4f6; }
[data-theme="dark"] .related-card { background: #0d2029; }

@media (max-width: 900px) {
  .service-hero__grid, .service-detail__grid { grid-template-columns: 1fr; }
  .service-hero__visual { min-height: 570px; }
  .service-aside { position: static; display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .service-aside__box + .service-aside__box { margin-top: 0; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 650px) {
  .service-hero__grid { min-height: auto; padding-block: 50px 65px; }
  .service-hero h1 { font-size: clamp(3.7rem, 17vw, 5.4rem); }
  .service-hero__visual { min-height: 455px; }
  .service-hero__photo--main { inset: 0 0 45px 10%; }
  .service-hero__photo--small { width: 48%; height: 175px; }
  .facts-bar__grid { grid-template-columns: 1fr; }
  .facts-bar p { border-right: 1px solid rgba(255,255,255,.2); border-bottom: 1px solid rgba(255,255,255,.2); }
  .work-list { grid-template-columns: 1fr; }
  .work-list li { border-right: 0; }
  .service-aside, .related-grid { grid-template-columns: 1fr; }
}

html[data-theme="dark"] {
  --fog: #09171d;
  --steel: #9cafb8;
  --line: #29424d;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
}

[data-theme="dark"] body { color: #e8f0f3; background: #0b1a21; }
[data-theme="dark"] .topbar { color: #a9bec7; background: #061219; }
[data-theme="dark"] .site-header { background: rgba(11, 26, 33, 0.96); border-bottom-color: #29424d; }
[data-theme="dark"] .brand { filter: drop-shadow(0 4px 14px rgba(0,0,0,.16)); }
[data-theme="dark"] .theme-toggle { color: #dce8ed; border-color: #36505b; }
[data-theme="dark"] .site-nav a { color: #e8f0f3; }
[data-theme="dark"] .hero { background-color: #0b1a21; }
[data-theme="dark"] .hero::before { background: #061219; }
[data-theme="dark"] .hero__lead,
[data-theme="dark"] .section-heading > p,
[data-theme="dark"] .about__lead,
[data-theme="dark"] .about__copy > p:last-child,
[data-theme="dark"] .service-card ul,
[data-theme="dark"] .service-card__note,
[data-theme="dark"] .process p { color: #9fb2bb; }
[data-theme="dark"] .eyebrow { color: #75b8e3; }
[data-theme="dark"] .button--ghost { color: #e8f0f3; border-color: #49616b; background: rgba(255,255,255,.04); }
[data-theme="dark"] .button--ghost:hover { border-color: #dce8ed; }
[data-theme="dark"] .hero__proof { border-top-color: #35505b; }
[data-theme="dark"] .hero__proof strong { color: #78bbe6; }
[data-theme="dark"] .hero__proof span { color: #9eb1ba; }
[data-theme="dark"] .hero__tag { color: #e8f0f3; background: #102d39; }
[data-theme="dark"] .services,
[data-theme="dark"] .about { background: #0b1a21; }
[data-theme="dark"] .service-card { background: #0d2029; }
[data-theme="dark"] .service-card:hover { box-shadow: 0 24px 70px rgba(0,0,0,.38); }
[data-theme="dark"] .service-card__label,
[data-theme="dark"] .replacement-note { color: #91a6af; }
[data-theme="dark"] .process { border-top-color: #29424d; }
[data-theme="dark"] .mobile-call { color: #fff; }

@media (max-width: 900px) {
  [data-theme="dark"] .site-nav { background: #0d2029; border-bottom-color: #29424d; }
  [data-theme="dark"] .nav-toggle { border-color: #36505b; background: #0d2029; }
  [data-theme="dark"] .nav-toggle > span:not(.sr-only) { background: #e8f0f3; }
}

@media (max-width: 1080px) {
  .site-header__inner { grid-template-columns: 170px 1fr auto; gap: 18px; }
  .brand { width: 158px; }
  .site-nav { gap: 16px; }
  .site-nav a { font-size: .84rem; }
  .header-call { padding-inline: 13px; }
  .hero__grid { grid-template-columns: 1.05fr .95fr; gap: 35px; }
  .hero__proof { gap: 20px; }
}

@media (max-width: 900px) {
  :root { --shell: min(100% - 32px, 720px); }
  .topbar__inner { min-height: 32px; }
  .topbar p { display: none; }
  .topbar a { margin-left: auto; }
  .site-header__inner { min-height: 76px; grid-template-columns: 1fr auto; }
  .brand { width: 150px; }
  .brand img { height: 60px; }
  .header-call { display: none; }
  .header-actions { position: absolute; right: 66px; }
  .nav-toggle { display: grid; width: 46px; height: 46px; place-content: center; gap: 5px; padding: 0; border: 1px solid var(--line); background: var(--white); cursor: pointer; }
  .nav-toggle > span:not(.sr-only) { width: 22px; height: 2px; background: var(--ink); transition: transform 180ms ease, opacity 180ms ease; }
  .nav-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .site-nav { position: fixed; inset: 108px 0 auto; display: grid; gap: 0; padding: 26px 24px 34px; background: var(--white); border-bottom: 1px solid var(--line); box-shadow: 0 20px 50px rgba(16,38,50,.16); transform: translateY(-140%); transition: transform 230ms ease; }
  .site-nav.is-open { transform: translateY(0); }
  .site-nav a { padding: 13px 4px; border-bottom: 1px solid var(--line); font-size: 1.05rem; }
  .hero::before { top: auto; bottom: 0; width: 100%; height: 38%; }
  .hero__grid { grid-template-columns: 1fr; min-height: auto; padding-block: 70px 80px; }
  .hero__copy { max-width: 690px; }
  .hero__visual { min-height: 600px; }
  .hero__main-photo { width: 76%; height: 540px; }
  .hero__secondary-photo { width: 42%; height: 220px; }
  .trust-strip__grid { grid-template-columns: repeat(2, 1fr); }
  .trust-strip p:nth-child(3), .trust-strip p:nth-child(4) { border-top: 1px solid rgba(255,255,255,.17); }
  .section-heading--split, .associations__grid, .about__grid, .contact__inner { grid-template-columns: 1fr; }
  .section-heading--split { gap: 25px; }
  .section-heading > p { max-width: 650px; }
  .associations__visual { order: 2; }
  .blueprint { min-height: 440px; }
  .contact__inner { gap: 42px; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; padding-block: 34px 90px; }
  .site-footer__inner p:nth-child(2) { text-align: right; }
  .site-footer__inner p:last-child { grid-column: 1 / -1; }
  .mobile-call { position: fixed; z-index: 90; right: 14px; bottom: 14px; left: 14px; display: flex; min-height: 54px; align-items: center; justify-content: center; gap: 10px; color: var(--white); background: var(--red); box-shadow: 0 12px 35px rgba(16,38,50,.28); font-weight: 800; text-decoration: none; }
  .mobile-call svg { width: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; }
}

@media (max-width: 650px) {
  :root { --shell: calc(100% - 28px); }
  h1 { font-size: clamp(3.6rem, 16vw, 5.3rem); }
  h2 { font-size: clamp(2.8rem, 13vw, 4.2rem); }
  .hero__grid { padding-top: 55px; }
  .hero__actions { display: grid; }
  .hero__proof { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .hero__proof div { display: block; }
  .hero__proof strong, .hero__proof span { display: block; }
  .hero__proof span { margin-top: 5px; font-size: .66rem; }
  .hero__visual { min-height: 470px; }
  .hero__main-photo { width: 88%; height: 430px; }
  .hero__secondary-photo { width: 48%; height: 175px; border-width: 7px; }
  .hero__pipe { right: -60px; width: 180px; }
  .trust-strip__grid { grid-template-columns: 1fr; }
  .trust-strip p { border-right: 1px solid rgba(255,255,255,.17); border-bottom: 1px solid rgba(255,255,255,.17); }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 455px; }
  .project-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 240px; }
  .project--tall { grid-row: span 1; }
  .project--wide { grid-column: span 2; }
  .project span { right: 15px; bottom: 14px; left: 15px; font-size: .78rem; }
  .blueprint { min-height: 330px; }
  .contact__actions { grid-template-columns: 1fr; }
  .contact-link + .contact-link { border-top: 0; border-left: 1px solid rgba(255,255,255,.28); }
  .contact-link { min-height: 180px; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 20px; }
  .site-footer__inner p:nth-child(2) { text-align: left; }
  .site-footer__inner p:last-child { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}