/* Caratteri serviti dal sito (Montserrat e Karla, licenza SIL OFL) */
@font-face { font-family: 'Karla'; font-style: normal; font-weight: 400 700; font-display: swap; src: url('assets/fonts/karla-variable.woff2') format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Montserrat'; font-style: normal; font-weight: 600 900; font-display: swap; src: url('assets/fonts/montserrat-variable.woff2') format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Montserrat'; font-style: italic; font-weight: 700 800; font-display: swap; src: url('assets/fonts/montserrat-italic-variable.woff2') format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

:root {
  --ink: #07090a;
  --ink-2: #111719;
  --ink-3: #242b2f;
  --paper: #080a0c;
  --paper-2: #111519;
  --white: #f7f8f8;
  --surface: #151a1d;
  --surface-cool: #20262a;
  --muted: #a8b2b6;
  --line: rgba(255,255,255,.13);
  --teal: #16b8b4;
  --teal-dark: #098b8a;
  --teal-light: #63ded8;
  --overlay: 7,22,27;
  --radius: 22px;
  --shadow: 0 28px 80px rgba(0,0,0,.38);
  --container: min(1180px, calc(100vw - 44px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
body {
  margin: 0;
  color: var(--white);
  background: var(--ink);
  font-family: Karla, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3 { font-family: "Montserrat", "Helvetica Neue", Arial, sans-serif; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
::selection { background: var(--teal); color: var(--ink); }

.container { width: var(--container); margin-inline: auto; }
.section { padding: 116px 0; }
main > section + section { border-top: 2px solid rgba(22,184,180,.25); }
section[id] { scroll-margin-top: 120px; }
.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; top: 8px; left: 8px; z-index: 100; transform: translateY(-150%); background: var(--surface-cool); color: var(--white); padding: 10px 16px; border: 1px solid var(--line); border-radius: 8px; }
.skip-link:focus { transform: none; }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 80;
  width: 100%;
  height: 3px;
  background: var(--teal-light);
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.motion-ready .scroll-reveal {
  opacity: 0;
  transform: translate3d(0, 32px, 0);
  transition:
    opacity .68s ease,
    transform .68s cubic-bezier(.2, .7, .2, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

.motion-ready .scroll-reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

html[data-device="mobile"].motion-ready .scroll-reveal {
  transform: translate3d(0, 18px, 0);
  transition-duration: .46s;
  transition-delay: 0ms;
}

html[data-device="mobile"].motion-ready .scroll-reveal.is-visible {
  transform: translate3d(0, 0, 0);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  background: transparent;
  border-bottom: 1px solid rgba(255,255,255,.15);
  transition:
    background-color .24s ease,
    border-color .24s ease,
    box-shadow .24s ease,
    backdrop-filter .24s ease;
}
.site-header.is-scrolled {
  background: rgba(8,23,27,.94);
  border-color: rgba(99,222,216,.2);
  box-shadow: 0 18px 48px rgba(4,17,20,.22);
  backdrop-filter: blur(16px);
}
.header-inner { min-height: 104px; display: flex; align-items: center; gap: 40px; }
.brand img { width: 178px; height: auto; }
.primary-nav { display: flex; align-items: center; flex: 1; gap: 24px; color: rgba(255,255,255,.88); font-size: 15px; font-weight: 650; }
.primary-nav a { text-decoration: none; white-space: nowrap; transition: color .2s ease, border-color .2s ease; }
.primary-nav a:hover, .primary-nav a:focus-visible, .primary-nav a.is-active { color: var(--teal-light); }
.nav-cta { margin-left: auto; background: var(--teal); color: #08272a; border: 1px solid var(--teal); border-radius: 999px; padding: 10px 16px; font-weight: 700; }
.nav-cta:hover { background: var(--teal-light); border-color: var(--teal-light); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; padding: 10px; }
.menu-toggle span:not(.sr-only) { display: block; width: 24px; height: 2px; background: white; margin: 5px auto; }

.hero { min-height: 860px; position: relative; color: white; display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 42%; transform-origin: 46% 38%; will-change: transform; animation: hero-ken-burns 16s ease-in-out infinite alternate; }
@keyframes hero-ken-burns {
  0% { transform: scale(1.0) translate3d(0, 0, 0); }
  100% { transform: scale(1.16) translate3d(-1.5%, -1%, 0); }
}
.hero-scrim { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(var(--overlay),.86) 0%, rgba(var(--overlay),.62) 46%, rgba(var(--overlay),.16) 76%), linear-gradient(0deg, rgba(var(--overlay),.7) 0%, transparent 44%); }
.hero-content { position: relative; z-index: 2; padding-bottom: 110px; padding-top: 170px; }
.eyebrow { margin: 0 0 18px; color: var(--teal-light); font-size: 12px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow-light { color: var(--teal-light); }
.hero h1 { max-width: 700px; margin: 0; font-size: 66px; line-height: 1.02; letter-spacing: -.01em; font-weight: 800; color: white; }
.hero h1 em { color: var(--teal-light); font-style: italic; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 22px; border: 1px solid transparent; border-radius: 999px; text-decoration: none; font-weight: 750; cursor: pointer; transition: transform .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease; font-family: Karla, sans-serif; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--teal); color: #08272a; }
.button-primary:hover { background: var(--teal-light); }
.button-ghost { border-color: rgba(255,255,255,.55); color: white; background: rgba(255,255,255,.04); backdrop-filter: blur(8px); }
.button-ghost:hover { border-color: var(--teal-light); }
.button-dark { color: white; background: var(--ink-3); border-color: rgba(255,255,255,.16); }
.button-dark:hover { background: var(--ink-2); }

h2 { margin: 0; font-size: 52px; line-height: 1.08; letter-spacing: 0; font-weight: 700; }

.estimator-section { position: relative; background: var(--ink); color: white; overflow: hidden; }
.estimator-section::before { content: ""; position: absolute; width: 620px; height: 620px; top: -240px; right: -160px; border: 110px solid rgba(22,184,180,.08); border-radius: 50%; }
.section-heading { display: flex; justify-content: space-between; gap: 80px; align-items: end; margin-bottom: 52px; }
.section-heading > div { max-width: 790px; }
.section-heading > p { max-width: 390px; margin: 0 0 5px; color: var(--muted); }
.light-heading { position: relative; z-index: 1; }
.light-heading > p { color: rgba(255,255,255,.64); }
.estimator-shell { position: relative; z-index: 1; display: grid; grid-template-columns: 380px 1fr; background: var(--surface); color: var(--white); border: 1px solid var(--line); border-radius: 28px; overflow: hidden; box-shadow: var(--shadow); }
.estimator-form { padding: 36px; background: var(--surface-cool); border-right: 1px solid var(--line); }
.form-heading { display: flex; gap: 16px; margin-bottom: 30px; }
.form-heading > span { display: grid; place-items: center; flex: 0 0 42px; height: 42px; border-radius: 50%; color: var(--teal-light); border: 1px solid rgba(99,222,216,.3); font-size: 12px; font-weight: 800; }
.form-heading div { display: flex; flex-direction: column; }
.form-heading strong { font-size: 18px; }
.form-heading small { color: var(--muted); }
.estimator-form label { display: grid; gap: 8px; margin-bottom: 18px; }
.estimator-form label > span { font-size: 12px; font-weight: 800; letter-spacing: .05em; }
.estimator-form select, .estimator-form input { width: 100%; min-height: 50px; border: 1px solid rgba(255,255,255,.16); background: #0d1113; border-radius: 12px; padding: 0 14px; color: var(--white); outline: none; transition: border-color .18s, box-shadow .18s; }
.estimator-form select:focus, .estimator-form input:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(22,184,180,.15); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.input-suffix { position: relative; }
.input-suffix input { padding-right: 42px; }
.input-suffix b { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 13px; }
.form-button { width: 100%; margin-top: 6px; border: 0; }
.microcopy { margin: 14px 0 0; color: var(--muted); font-size: 11px; text-align: center; }
.estimator-results { padding: 38px 42px; }
.result-topline { display: flex; justify-content: space-between; align-items: center; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.result-topline > div:first-child { display: grid; }
.result-kicker { color: var(--teal-light); text-transform: uppercase; font-size: 11px; font-weight: 800; letter-spacing: .13em; }
.result-topline strong { margin-top: 2px; font-size: 30px; letter-spacing: 0; font-family: "Montserrat", sans-serif; }
.result-topline small { color: var(--muted); }
.result-ring { --p: 0; width: 84px; height: 84px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--teal) calc(var(--p) * 1%), #343d41 0); position: relative; }
.result-ring::before { content: ""; position: absolute; inset: 8px; border-radius: 50%; background: var(--surface); }
.result-ring span { position: relative; font-size: 18px; font-weight: 850; }
.cost-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 26px; }
.cost-card { border: 1px solid var(--line); border-radius: 18px; padding: 22px; background: #121719; }
.cost-card-featured { background: #1b2225; border-color: rgba(22,184,180,.36); }
.cost-card-title { display: flex; gap: 10px; align-items: center; }
.cost-card-title div { display: grid; }
.cost-card-title small { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .1em; }
.cost-card h3 { margin: 0; font-size: 17px; }
.method-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 5px rgba(22,184,180,.13); }
.method-dot-gray { background: #78878b; box-shadow: 0 0 0 5px rgba(120,135,139,.13); }
.cost { display: block; margin-top: 24px; font-size: 32px; line-height: 1; letter-spacing: 0; font-family: "Montserrat", sans-serif; }
.cost-card > small { color: var(--muted); }
.cost-bar { height: 5px; margin-top: 22px; border-radius: 20px; background: rgba(22,184,180,.16); overflow: hidden; }
.cost-bar span { display: block; height: 100%; width: 50%; background: var(--teal); transition: width .4s ease; }
.cost-bar-gray { background: #323a3e; }
.cost-bar-gray span { background: #778589; }
.comparison-table { margin-top: 24px; border-top: 1px solid var(--line); }
.comparison-row { display: grid; grid-template-columns: 1.15fr 1fr 1fr; align-items: center; min-height: 52px; border-bottom: 1px solid var(--line); font-size: 13px; }
.comparison-row span { color: var(--muted); }
.comparison-row strong { font-size: 13px; }
.comparison-row strong:nth-child(2) { color: var(--teal-light); }
.comparison-head { min-height: 40px; font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.estimator-notice { display: flex; gap: 12px; margin-top: 22px; padding: 15px 16px; background: var(--surface-cool); border: 1px solid rgba(255,255,255,.08); border-radius: 12px; }
.estimator-notice svg { flex: 0 0 22px; width: 22px; height: 22px; fill: none; stroke: var(--teal-light); stroke-width: 1.7; }
.estimator-notice p { margin: 0; color: var(--muted); font-size: 12px; }
.estimator-notice strong { color: var(--white); }

.process-section { background: var(--paper); }
.process-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; }
.process-intro { position: sticky; top: 70px; align-self: start; }
.process-intro p:not(.eyebrow) { max-width: 480px; color: var(--muted); font-size: 17px; }
.process-intro .button { margin-top: 20px; }
.process-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.process-list li { display: grid; grid-template-columns: 70px 1fr; gap: 20px; padding: 30px 0 36px; border-bottom: 1px solid var(--line); }
.process-list > li > span { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line); color: var(--teal-light); font-size: 11px; font-weight: 800; font-family: "Montserrat", sans-serif; }
.process-list h3 { margin: 0 0 6px; font-size: 23px; letter-spacing: 0; }
.process-list p { margin: 0; color: var(--muted); }

.faq-section { background: var(--surface-cool); }
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; }
.faq-grid > div:first-child > p:not(.eyebrow) { color: var(--muted); max-width: 430px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 20px; align-items: center; min-height: 78px; font-size: 18px; font-weight: 750; font-family: "Montserrat", sans-serif; }
summary::-webkit-details-marker { display: none; }
summary span { font-size: 24px; color: var(--teal-light); transition: transform .2s; }
details[open] summary span { transform: rotate(45deg); }
details p { margin: -6px 52px 26px 0; color: var(--muted); }

.site-footer { padding: 54px 0 24px; background: #050607; color: white; }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 50px; padding-bottom: 45px; }
.footer-top img { width: 144px; }
.footer-top p { max-width: 500px; color: rgba(255,255,255,.55); }
.footer-bottom { display: grid; grid-template-columns: 1fr auto auto; gap: 30px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.42); font-size: 11px; }
.footer-bottom a { color: rgba(255,255,255,.75); text-decoration: none; }


/* Sardegna-first identity and local coverage */
.brand-cluster { display: flex; align-items: center; gap: 18px; min-width: 0; }
.header-region { display: inline-flex; align-items: center; gap: 7px; min-height: 34px; padding-left: 17px; border-left: 1px solid rgba(255,255,255,.24); color: rgba(255,255,255,.78); font-size: 10px; font-weight: 850; letter-spacing: .14em; text-decoration: none; text-transform: uppercase; white-space: nowrap; }
.header-region svg { width: 16px; height: 16px; fill: none; stroke: var(--teal-light); stroke-width: 1.8; }
.header-region:hover, .header-region:focus-visible { color: white; }

.services-tiles-section { position: relative; background: #0d1614; overflow: hidden; }
.services-tiles-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('assets/rts-logo-light.svg') center / min(78%, 900px) auto no-repeat;
  opacity: .08;
  pointer-events: none;
}
.services-tiles { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); }
.service-tile {
  position: relative; min-height: 480px; overflow: hidden; background: transparent;
  display: flex; align-items: flex-end; padding: 42px;
}
.service-tile + .service-tile { border-left: 1px solid rgba(255,255,255,.08); }
.service-tile-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0; transform: scale(1.07);
  transition: opacity .5s ease, transform .6s ease;
}
.service-tile-autospurgo .service-tile-bg { background-image: url('assets/works/autospurgo-rts.jpg'); }
.service-tile-video .service-tile-bg { background-image: url('assets/works/videoispezione-crawler.jpg'); background-position: center 46%; }
.service-tile-relining .service-tile-bg { background-image: url('assets/hero-bastione-cagliari.jpg'); background-position: 40% center; }
.service-tile-scrim {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(var(--overlay),.92) 0%, rgba(var(--overlay),.5) 60%, rgba(var(--overlay),.25) 100%);
  opacity: 0; transition: opacity .5s ease;
}
html[data-device="desktop"] .service-tile:hover .service-tile-bg { opacity: 1; transform: scale(1); }
html[data-device="desktop"] .service-tile:hover .service-tile-scrim { opacity: 1; }
.service-tile-content { position: relative; z-index: 1; }
.service-tile-bar { display: block; width: 44px; height: 2px; margin-bottom: 22px; background: var(--teal-light); }
.service-tile-title { margin: 0; font-family: "Montserrat", sans-serif; font-weight: 800; font-size: 28px; letter-spacing: -.01em; color: var(--white); line-height: 1.1; }
.service-tile-kicker { display: block; font-weight: 500; font-size: 22px; color: var(--teal-light); margin-bottom: 2px; }
.service-tile-caption { margin: 16px 0 0; max-width: 220px; color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; line-height: 1.5; }
.service-tile-desc {
  margin: 18px 0 0; max-width: 320px; color: rgba(255,255,255,.82); font-size: 15px; line-height: 1.55;
  opacity: 0; max-height: 0; overflow: hidden; transition: opacity .35s ease, max-height .35s ease;
}
html[data-device="desktop"] .service-tile:hover .service-tile-desc { opacity: 1; max-height: 200px; }
.service-tile-more { max-height: 0; margin-top: 0; overflow: hidden; opacity: 0; transition: max-height .35s ease, opacity .35s ease, margin-top .35s ease; }
.service-tile-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 18px; border-radius: 999px; background: var(--teal); color: #08272a; font-weight: 750; font-size: 14px; text-decoration: none; transition: background .18s ease, transform .18s ease; }
.service-tile-link:hover { background: var(--teal-light); transform: translateY(-1px); }
.service-tile-link svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
html[data-device="desktop"] .service-tile:hover .service-tile-more,
html[data-device="desktop"] .service-tile:focus-within .service-tile-more { max-height: 70px; margin-top: 22px; opacity: 1; }
html[data-device="desktop"] .service-tile:focus-within .service-tile-bg { opacity: 1; transform: scale(1); }
html[data-device="desktop"] .service-tile:focus-within .service-tile-scrim { opacity: 1; }
html[data-device="desktop"] .service-tile:focus-within .service-tile-desc { opacity: 1; max-height: 200px; }

.page-hero { min-height: 560px; }
.page-hero .hero-content { padding-top: 190px; padding-bottom: 80px; }
.page-hero h1 { font-size: 58px; max-width: 760px; }
.page-lead { max-width: 620px; margin: 22px 0 0; color: rgba(255,255,255,.82); font-size: 19px; line-height: 1.55; }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.split-card { padding: 36px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.split-card-accent { border-color: rgba(22,184,180,.36); background: #10191a; }
.split-card h3 { margin: 0 0 16px; font-size: 24px; letter-spacing: 0; }
.split-card ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; color: var(--muted); }
.split-card li { position: relative; padding-left: 22px; }
.split-card li::before { content: ""; position: absolute; left: 0; top: 11px; width: 10px; height: 2px; background: var(--teal-light); }
.split-card p { margin: 0; color: var(--muted); }
.split-card p + p { margin-top: 12px; }
.split-card .button { margin-top: 24px; }
.related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.related-card { display: block; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-cool); text-decoration: none; transition: border-color .2s ease, transform .2s ease; }
.related-card:hover { border-color: var(--teal-light); transform: translateY(-2px); }
.related-card span { color: var(--teal-light); font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.related-card h3 { margin: 10px 0 6px; font-size: 22px; letter-spacing: 0; }
.related-card p { margin: 0; color: var(--muted); font-size: 15px; }
.legal-text { max-width: 760px; }
.legal-text h2 { margin: 44px 0 12px; font-size: 24px; letter-spacing: 0; }
.legal-text p, .legal-text li { color: var(--muted); }
.legal-text ul { padding-left: 20px; }

/* Contatti */
.contact-number { display: inline-block; margin: 4px 0 16px; color: var(--white); font-family: "Montserrat", sans-serif; font-size: 32px; font-weight: 800; letter-spacing: -.01em; line-height: 1.1; text-decoration: none; }
.contact-number:hover, .contact-number:focus-visible { color: var(--teal-light); }
.button svg { width: 20px; height: 20px; margin-right: 10px; flex: none; }
.split-grid-3, .related-grid-3 { grid-template-columns: repeat(3, 1fr); }

.scene-wrap { position: relative; aspect-ratio: 16 / 9; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: radial-gradient(ellipse 70% 60% at 50% 46%, #14211f 0%, #0d1614 42%, #07090a 100%); }
.scene-wrap canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.scene-fade { position: absolute; inset: 0; background: #07090a; opacity: 1; pointer-events: none; }
.scene-wrap.is-fallback::after { content: "Animazione non disponibile su questo dispositivo."; position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 14px; }
.scene-legend { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 0; padding: 0; }
.scene-chip { padding: 9px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 13px; font-weight: 700; line-height: 1.2; white-space: nowrap; transition: color .3s ease, border-color .3s ease, background .3s ease; }
.scene-chip.is-active { color: var(--white); border-color: rgba(22,184,180,.7); background: rgba(22,184,180,.14); }

.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gallery-grid figure { margin: 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--surface); }
.gallery-grid img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: center 42%; transition: transform .6s ease; }
html[data-device="desktop"] .gallery-grid figure:hover img { transform: scale(1.03); }
.gallery-grid figcaption { padding: 12px 14px 14px; color: var(--muted); font-size: 13px; line-height: 1.45; }

.footer-areas { display: grid; gap: 4px; padding: 0 0 28px; color: rgba(255,255,255,.72); font-size: 12px; }
.footer-areas strong { color: var(--teal-light); font-size: 13px; }
.footer-areas span { color: rgba(255,255,255,.48); }

@media (max-width: 980px) {
  :root { --container: min(100% - 32px, 760px); }
  .section { padding: 88px 0; }
  .site-header { position: fixed; }
  .brand img { width: 152px; }
  .header-region { font-size: 9px; }
  .menu-toggle { display: block; }
  .primary-nav { display: none; position: absolute; top: 90px; right: 16px; width: min(340px, calc(100vw - 32px)); padding: 22px; border-radius: 16px; background: rgba(8,23,27,.97); box-shadow: var(--shadow); flex-direction: column; align-items: stretch; gap: 18px; font-size: 15px; }
  .primary-nav.is-open { display: flex; }
  .nav-cta { text-align: center; margin-left: 0; }
  .hero { min-height: 780px; }
  .hero-content { padding-bottom: 90px; }
  .hero h1 { font-size: 52px; max-width: 560px; }
  .process-grid, .faq-grid { grid-template-columns: 1fr; gap: 50px; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .split-grid, .related-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 46px; }
  .section-heading { display: grid; gap: 20px; }
  .estimator-shell { grid-template-columns: 1fr; }
  .estimator-form { border-right: 0; border-bottom: 1px solid var(--line); }
  .process-intro { position: static; }
  .footer-top { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 640px) {
  :root { --container: calc(100% - 24px); --radius: 16px; }
  html { scroll-padding-top: 92px; }
  section[id] { scroll-margin-top: 92px; }
  .section { padding: 58px 0; }
  .header-inner { min-height: 82px; }
  .brand img { width: 128px; }
  .brand-cluster { gap: 10px; }
  .header-region { gap: 4px; padding-left: 10px; font-size: 8px; letter-spacing: .09em; }
  .header-region svg { width: 13px; height: 13px; }
  .hero { min-height: 760px; }
  .hero-scrim { background: linear-gradient(90deg, rgba(var(--overlay),.88), rgba(var(--overlay),.45)), linear-gradient(0deg, rgba(var(--overlay),.88), transparent 60%); }
  .hero-image { object-position: 58% center; }
  .hero-content { padding-top: 110px; padding-bottom: 64px; max-width: none; }
  .hero h1 { font-size: 40px; }
  .hero-actions { display: grid; }
  .hero-actions .button { width: 100%; }
  h2 { font-size: 34px; }
  .services-tiles { grid-template-columns: 1fr; }
  .service-tile { min-height: 320px; padding: 30px; }
  .service-tile + .service-tile { border-left: 0; border-top: 1px solid rgba(255,255,255,.08); }
  .service-tile-bg, .service-tile-scrim { opacity: 1; transform: none; }
  .service-tile-desc { opacity: 1; max-height: 200px; }
  .service-tile-more { max-height: 70px; margin-top: 22px; opacity: 1; }
  .gallery-grid { grid-template-columns: 1fr; }
  .page-hero { min-height: 520px; }
  .page-hero .hero-content { padding-top: 130px; padding-bottom: 56px; }
  .page-hero h1 { font-size: 36px; }
  .page-lead { font-size: 17px; }
  .split-card { padding: 24px; }
  .scene-wrap { aspect-ratio: 4 / 3; border-radius: 16px; }
  .scene-chip { font-size: 12px; padding: 8px 12px; }
  .estimator-form, .estimator-results { padding: 24px; }
  .cost-columns { grid-template-columns: 1fr; }
  .comparison-row { grid-template-columns: 1.05fr .95fr .95fr; font-size: 11px; }
  .comparison-row strong { font-size: 11px; }
  .result-ring { width: 72px; height: 72px; }
  .cost { font-size: 29px; }
  .faq-grid { gap: 30px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .footer-bottom { grid-template-columns: 1fr; gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}