/* =============================================================
   Marmolería MyM · Neuquén
   Stone-inspired architectural design system.
   Palette: gris carbón / hueso / gris piedra / dorado (single accent)
   Type:    Playfair Display (display) + Inter (body)
   ============================================================= */

:root{
  /* Palette (locked) */
  --c-carbon:   #2C2C2C;   /* primary dark, headings, text */
  --c-carbon-2: #1F1F1F;   /* deeper dark for dark sections */
  --c-carbon-3: #383838;   /* card dark surface */
  --c-hueso:    #E8E4DF;   /* primary light background */
  --c-hueso-2:  #F4F2EF;   /* lighter cream surface */
  --c-piedra:   #8E8E8E;   /* decorative / borders only (low contrast) */
  --c-dorado:   #C5A572;   /* single accent */
  --c-dorado-d: #A8854E;   /* accent hover (darker) */

  /* Functional text colors (contrast-safe) */
  --text:        #2C2C2C;
  --text-muted:  #595959;  /* AA-safe muted body text on light */
  --text-invert: #E8E4DF;
  --text-muted-inv: #B8B4AE;

  /* Functional */
  --bg:        #F4F2EF;
  --bg-card:   #FFFFFF;
  --bg-dark:   #2C2C2C;
  --bg-dark-2: #1F1F1F;
  --border:    #D9D4CC;
  --border-dark:#3A3A3A;

  /* WhatsApp (AA contrast-safe dark green) */
  --c-wa: #0F7660;
  --c-wa-d:#0A5C4A;

  /* Type */
  --ff-display: "Playfair Display", Georgia, serif;
  --ff-body: "Inter", system-ui, -apple-system, Arial, sans-serif;

  /* Shape lock: all-sharp architectural (radius 0), pill only for FAB */
  --r-sm: 0px;
  --r-md: 0px;
  --r-lg: 0px;
  --r-pill: 999px;

  /* Layout */
  --container: 1200px;
  --gutter: clamp(1.1rem, 4vw, 2.5rem);
  --section-y: clamp(3.5rem, 8vw, 6.5rem);

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 0.18s;
  --t-med: 0.32s;
}

/* ---------- Reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
*{ margin:0; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  font-family:var(--ff-body);
  font-size:1rem;
  line-height:1.65;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{ display:block; max-width:100%; height:auto; }
a{ color:var(--c-dorado-d); text-decoration:none; }
a:hover{ text-decoration:underline; }
ul{ list-style:none; padding:0; }
button{ font:inherit; cursor:pointer; }
:focus-visible{ outline:2px solid var(--c-dorado); outline-offset:2px; }

/* ---------- Layout helpers ---------- */
.container{ width:100%; max-width:var(--container); margin-inline:auto; padding-inline:var(--gutter); }
.section{ padding-block:var(--section-y); }
.section--tight{ padding-block:clamp(2.5rem,5vw,4rem); }
.section--dark{ background:var(--bg-dark); color:var(--text-invert); }
.section--dark-2{ background:var(--bg-dark-2); color:var(--text-invert); }
.bg-hueso{ background:var(--c-hueso); }
.bg-cream{ background:var(--bg); }

/* Skip link */
.skip-link{
  position:absolute; left:0; top:-120px; z-index:3000;
  background:var(--c-carbon); color:#fff;
  padding:.75rem 1.2rem; font-weight:600; font-size:.95rem;
  transition:top var(--t-fast) var(--ease);
}
.skip-link:focus{ top:0; }

/* ---------- Typography ---------- */
h1,h2,h3,h4{ font-family:var(--ff-display); font-weight:700; line-height:1.12; letter-spacing:-0.01em; color:var(--c-carbon); }
.section--dark h1,.section--dark h2,.section--dark h3,
.section--dark-2 h1,.section--dark-2 h2,.section--dark-2 h3{ color:var(--text-invert); }
h1{ font-size:clamp(2.1rem,5vw,3.4rem); }
h2{ font-size:clamp(1.7rem,3.6vw,2.5rem); }
h3{ font-size:clamp(1.25rem,2vw,1.55rem); }
p{ color:var(--text); }
.section--dark p,.section--dark-2 p{ color:var(--text-muted-inv); }
.lead{ font-size:1.125rem; line-height:1.6; color:var(--text-muted); max-width:62ch; }
.section--dark .lead{ color:var(--text-muted-inv); }
.eyebrow{
  display:inline-block; font-family:var(--ff-body); font-weight:600;
  font-size:0.875rem; letter-spacing:0.18em; text-transform:uppercase;
  color:var(--c-dorado-d);
}
.section--dark .eyebrow,.section--dark-2 .eyebrow{ color:var(--c-dorado); }
.measure{ max-width:65ch; }
.rule-gold{ width:48px; height:3px; background:var(--c-dorado); display:block; margin-block:1rem 1.5rem; }
.section--dark .rule-gold{ background:var(--c-dorado); }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.55rem;
  padding:.9rem 1.6rem; min-height:48px;
  font-family:var(--ff-body); font-weight:600; font-size:1rem;
  text-decoration:none; border:2px solid transparent;
  background:var(--c-carbon); color:#fff;
  transition:transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
  white-space:nowrap;
}
.btn:hover{ background:var(--c-carbon-2); text-decoration:none; transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }
.btn--gold{ background:var(--c-dorado); color:var(--c-carbon); border-color:var(--c-dorado); }
.btn--gold:hover{ background:var(--c-dorado-d); border-color:var(--c-dorado-d); color:#fff; }
.btn--outline{ background:transparent; color:var(--c-carbon); border-color:var(--c-carbon); }
.btn--outline:hover{ background:var(--c-carbon); color:#fff; }
.btn--outline-inv{ background:transparent; color:var(--text-invert); border-color:rgba(232,228,223,0.5); }
.btn--outline-inv:hover{ background:var(--text-invert); color:var(--c-carbon); border-color:var(--text-invert); }
.btn--whatsapp{ background:var(--c-wa); color:#fff; border-color:var(--c-wa); }
.btn--whatsapp:hover{ background:var(--c-wa-d); border-color:var(--c-wa-d); color:#fff; }
.btn--lg{ padding:1.05rem 2rem; font-size:1.05rem; }
.btn--block{ width:100%; }

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky; top:0; z-index:1000;
  background:rgba(244,242,239,0.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--t-med) var(--ease), background var(--t-med) var(--ease);
}
.header--scrolled{ box-shadow:0 6px 24px rgba(44,44,44,0.08); background:rgba(244,242,239,0.98); }
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:1rem; min-height:72px; }
.brand img{ height:46px; width:auto; }
.nav-toggle{
  display:none; position:relative;
  width:48px; height:48px; background:transparent; border:0;
  z-index:1100;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:""; display:block; position:absolute; left:12px; right:12px; height:2px;
  background:var(--c-carbon); transition:transform var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease);
}
.nav-toggle span{ top:23px; }
.nav-toggle span::before{ top:-7px; }
.nav-toggle span::after{ top:7px; }
.nav-toggle[aria-expanded="true"] span{ background:transparent; }
.nav-toggle[aria-expanded="true"] span::before{ transform:translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after{ transform:translateY(-7px) rotate(-45deg); }

.nav-main{ display:flex; align-items:center; gap:1.8rem; }
.nav-list{ display:flex; align-items:center; gap:1.6rem; }
.nav-list a{
  font-weight:500; font-size:0.95rem; color:var(--c-carbon);
  padding:.35rem 0; position:relative; text-decoration:none;
  border-bottom:2px solid transparent; transition:color var(--t-fast), border-color var(--t-fast);
}
.nav-list a:hover,.nav-list a[aria-current="page"]{ color:var(--c-dorado-d); border-bottom-color:var(--c-dorado); text-decoration:none; }
.nav-cta{ display:flex; align-items:center; gap:.6rem; }

.nav-backdrop{
  position:fixed; inset:0; z-index:1050; background:rgba(31,31,31,0.55);
  opacity:0; visibility:hidden; transition:opacity var(--t-med) var(--ease), visibility var(--t-med);
}
.nav-backdrop.is-open{ opacity:1; visibility:visible; }

/* ---------- Hero ---------- */
.hero{
  position:relative; overflow:hidden;
  background:var(--c-carbon-2); color:var(--text-invert);
}
.hero-grid{
  display:grid; grid-template-columns:1.05fr 0.95fr;
  min-height:clamp(460px, 78vh, 760px);
}
.hero-content{
  display:flex; flex-direction:column; justify-content:center;
  padding-block:clamp(3rem,7vw,5.5rem); padding-right:clamp(1rem,3vw,3rem);
}
.hero-content h1{ color:var(--text-invert); margin-top:.4rem; }
.hero-content .lead{ color:var(--text-muted-inv); margin-top:1.4rem; }
.hero-ctas{ display:flex; flex-wrap:wrap; gap:.9rem; margin-top:2rem; }
.hero-media{ position:relative; min-height:340px; }
.hero-media img{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
}
.hero-media::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(90deg, rgba(31,31,31,0.85) 0%, rgba(31,31,31,0.15) 28%, transparent 55%);
}
.hero-stats{
  display:flex; flex-wrap:wrap; gap:2.2rem; margin-top:2.8rem;
  border-top:1px solid var(--border-dark); padding-top:1.4rem;
}
.hero-stat .num{ font-family:var(--ff-display); font-size:1.9rem; font-weight:700; color:var(--c-dorado); line-height:1; }
.hero-stat .lbl{ font-size:0.85rem; color:var(--text-muted-inv); margin-top:.3rem; letter-spacing:0.02em; }

/* ---------- Trust strip ---------- */
.trust{ background:var(--c-hueso); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.trust-grid{ display:flex; flex-wrap:wrap; align-items:center; justify-content:center; gap:clamp(1.5rem,4vw,3rem); padding-block:1.6rem; }
.trust-item{ display:flex; align-items:center; gap:.6rem; font-size:0.9rem; font-weight:500; color:var(--text-muted); }
.trust-item svg{ flex:none; }

/* ---------- Materials grid ---------- */
.materials-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1.25rem;
}
.material-card{
  position:relative; overflow:hidden; background:var(--c-carbon);
  border:1px solid var(--border-dark);
}
.material-card .img-wrap{ aspect-ratio:4/3; overflow:hidden; }
.material-card img{ width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.material-card:hover img{ transform:scale(1.04); }
.material-card .body{ padding:1.25rem 1.3rem 1.5rem; color:var(--text-invert); }
.material-card h3{ color:var(--text-invert); font-size:1.3rem; }
.material-card p{ color:var(--text-muted-inv); font-size:0.95rem; margin-top:.5rem; }
.material-card .tag{
  display:inline-block; font-size:0.78rem; font-weight:600; letter-spacing:0.12em;
  text-transform:uppercase; color:var(--c-dorado); margin-bottom:.5rem;
}

/* ---------- Process (numbered) ---------- */
.process-list{ display:grid; grid-template-columns:repeat(4,1fr); gap:0; border-top:1px solid var(--border); }
.process-step{
  padding:2rem 1.4rem; border-right:1px solid var(--border);
  display:flex; flex-direction:column; gap:.7rem;
}
.process-step:last-child{ border-right:0; }
.process-step .step-num{
  font-family:var(--ff-display); font-size:2.2rem; font-weight:700; color:var(--c-dorado); line-height:1;
}
.process-step h3{ font-size:1.15rem; }
.process-step p{ font-size:0.92rem; color:var(--text-muted); }

/* ---------- Showcase split ---------- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(1.5rem,4vw,3.5rem); align-items:center; }
.split--reverse .split-media{ order:2; }
.split-media img{ width:100%; aspect-ratio:4/3; object-fit:cover; }
.split-media .frame{ box-shadow:0 18px 50px rgba(44,44,44,0.16); }

/* ---------- Services list (no 3-equal cards) ---------- */
.svc-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:0; border-top:1px solid var(--border); }
.svc-row{
  display:grid; grid-template-columns:56px 1fr; gap:1.1rem;
  padding:1.7rem 1.3rem; border-bottom:1px solid var(--border); align-items:start;
  transition:background var(--t-fast) var(--ease);
}
.svc-row:hover{ background:var(--c-hueso-2); }
.svc-icon{
  width:48px; height:48px; display:grid; place-items:center;
  border:1px solid var(--c-dorado); color:var(--c-dorado-d);
}
.svc-row h3{ font-size:1.15rem; }
.svc-row p{ font-size:0.93rem; color:var(--text-muted); margin-top:.35rem; }

/* ---------- Testimonials ---------- */
.quotes{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.4rem; }
.quote{
  background:var(--bg-card); border:1px solid var(--border); padding:1.9rem 1.7rem;
  display:flex; flex-direction:column; gap:1rem;
}
.quote blockquote{ font-family:var(--ff-display); font-size:1.18rem; line-height:1.4; color:var(--c-carbon); }
.quote .attrib{ font-size:0.9rem; color:var(--text-muted); }
.quote .attrib strong{ color:var(--c-carbon); font-weight:600; display:block; }

/* ---------- FAQ ---------- */
.faq-list{ display:grid; gap:0; border-top:1px solid var(--border); }
.faq-item{ border-bottom:1px solid var(--border); }
.faq-q{
  display:flex; align-items:center; justify-content:space-between; gap:1rem;
  width:100%; padding:1.3rem 0; background:transparent; border:0; text-align:left;
  font-family:var(--ff-display); font-size:1.12rem; font-weight:700; color:var(--c-carbon);
}
.faq-q .ico{ flex:none; color:var(--c-dorado-d); transition:transform var(--t-med) var(--ease); }
.faq-item[open] .faq-q .ico{ transform:rotate(45deg); }
.faq-q::-webkit-details-marker{ display:none; }
.faq-a{ padding:0 0 1.3rem; color:var(--text-muted); max-width:70ch; }

/* ---------- CTA banner ---------- */
.cta-banner{
  background:var(--c-carbon-2); color:var(--text-invert);
  padding-block:clamp(3rem,6vw,4.5rem);
}
.cta-banner-inner{ display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:1.5rem; }
.cta-banner h2{ color:var(--text-invert); max-width:18ch; }
.cta-banner p{ color:var(--text-muted-inv); margin-top:.6rem; max-width:48ch; }

/* ---------- Page hero (subpages) ---------- */
.page-hero{ background:var(--c-carbon); color:var(--text-invert); padding-block:clamp(2.5rem,5vw,3.8rem); }
.page-hero h1{ color:var(--text-invert); }
.page-hero .lead{ color:var(--text-muted-inv); margin-top:1rem; }
.breadcrumb{ font-size:0.875rem; color:var(--text-muted-inv); margin-bottom:1rem; }
.breadcrumb a{ color:var(--c-dorado); }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:clamp(1.5rem,4vw,3rem); align-items:start; }
.form{ display:grid; gap:1.1rem; }
.field{ display:flex; flex-direction:column; gap:.4rem; }
.field label{ font-weight:600; font-size:0.95rem; color:var(--c-carbon); }
.field .req{ color:var(--c-dorado-d); }
.field input,.field select,.field textarea{
  font:inherit; padding:.8rem .9rem; min-height:48px;
  background:var(--bg-card); color:var(--text);
  border:1.5px solid var(--border); border-radius:var(--r-sm);
  transition:border-color var(--t-fast), box-shadow var(--t-fast);
}
.field textarea{ min-height:130px; resize:vertical; }
.field input::placeholder,.field textarea::placeholder{ color:#8a8a8a; }
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none; border-color:var(--c-dorado); box-shadow:0 0 0 3px rgba(197,165,114,0.25);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:#B23A2E; box-shadow:0 0 0 3px rgba(178,58,46,0.16);
}
.error-msg{ font-size:0.85rem; color:#B23A2E; min-height:1em; }
.form-success{
  display:none; align-items:flex-start; gap:.6rem;
  background:#EEF6F1; border:1px solid #BFD9CB; color:#1F5A45;
  padding:1rem 1.1rem; font-weight:500;
}
.form-success.is-visible{ display:flex; }

.contact-info{ display:grid; gap:1.3rem; }
.info-card{
  display:grid; grid-template-columns:44px 1fr; gap:.9rem; align-items:start;
  padding:1.2rem 1.2rem; background:var(--c-hueso); border:1px solid var(--border);
}
.info-card .ico{ width:44px; height:44px; display:grid; place-items:center; background:var(--c-carbon); color:var(--c-dorado); }
.info-card h3{ font-size:1.05rem; }
.info-card p{ font-size:0.92rem; color:var(--text-muted); margin-top:.2rem; }
.info-card a{ color:var(--text); font-weight:600; }

.map-wrap{ position:relative; border:1px solid var(--border); }
.map-wrap iframe{ width:100%; height:360px; border:0; display:block; filter:grayscale(0.2) contrast(1.02); }

.hours-table{ width:100%; border-collapse:collapse; }
.hours-table th,.hours-table td{ text-align:left; padding:.7rem 0; border-bottom:1px solid var(--border); font-size:0.95rem; }
.hours-table th{ font-weight:600; color:var(--c-carbon); }
.hours-table td{ color:var(--text-muted); }

/* ---------- Gallery (materiales page) ---------- */
.gallery{ display:grid; grid-template-columns:repeat(4,1fr); gap:0.85rem; }
.gallery .g-tile{ position:relative; overflow:hidden; background:var(--c-carbon); aspect-ratio:1/1; }
.gallery .g-tile.tall{ grid-row:span 2; aspect-ratio:auto; }
.gallery .g-tile img{ width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease), opacity var(--t-med); }
.gallery .g-tile:hover img{ transform:scale(1.05); }
.gallery .g-cap{
  position:absolute; left:0; right:0; bottom:0; padding:.7rem .9rem;
  background:linear-gradient(0deg, rgba(31,31,31,0.85), transparent);
  color:#fff; font-weight:600; font-size:0.9rem; letter-spacing:0.02em;
}

/* ---------- About ---------- */
.stat-blocks{ display:grid; grid-template-columns:repeat(4,1fr); gap:1.25rem; }
.stat-block{ text-align:center; padding:1.6rem 1rem; border:1px solid var(--border-dark); background:var(--c-carbon-3); color:var(--text-invert); }
.stat-block .num{ font-family:var(--ff-display); font-size:clamp(1.8rem,4vw,2.6rem); font-weight:700; color:var(--c-dorado); line-height:1; }
.stat-block .lbl{ font-size:0.875rem; color:var(--text-muted-inv); margin-top:.5rem; }

.values-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.4rem; }
.value-card{ padding:1.7rem 1.5rem; border:1px solid var(--border); background:var(--bg-card); }
.value-card .ico{ width:44px; height:44px; color:var(--c-dorado-d); margin-bottom:1rem; }
.value-card h3{ font-size:1.2rem; }
.value-card p{ font-size:0.93rem; color:var(--text-muted); margin-top:.5rem; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--bg-dark-2); color:var(--text-muted-inv); }
.footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:2rem; padding-block:clamp(2.8rem,5vw,4rem); }
.footer-brand img{ height:48px; width:auto; filter:brightness(0) invert(1); opacity:.95; }
.footer-brand p{ color:var(--text-muted-inv); margin-top:1rem; font-size:0.92rem; max-width:34ch; }
.footer-col h3{ color:var(--text-invert); font-family:var(--ff-body); font-size:0.85rem; font-weight:700; letter-spacing:0.12em; text-transform:uppercase; margin-bottom:1rem; }
.footer-col a{ display:block; color:var(--text-muted-inv); padding:.3rem 0; font-size:0.93rem; }
.footer-col a:hover{ color:var(--c-dorado); text-decoration:none; }
.footer-contact li{ display:flex; gap:.6rem; padding:.35rem 0; font-size:0.92rem; color:var(--text-muted-inv); }
.footer-contact svg{ flex:none; color:var(--c-dorado); }
.footer-bottom{
  border-top:1px solid var(--border-dark); padding-block:1.3rem;
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:.6rem;
  font-size:0.85rem; color:#7a7670;
}

/* ---------- WhatsApp FAB ---------- */
.wa-fab{
  position:fixed; right:clamp(1rem,3vw,1.6rem); bottom:clamp(1rem,3vw,1.6rem);
  z-index:1200; width:56px; height:56px; min-width:56px;
  border-radius:var(--r-pill); background:var(--c-wa); color:#fff;
  display:grid; place-items:center;
  box-shadow:0 8px 24px rgba(15,118,96,0.42);
}
.wa-fab:hover{ background:var(--c-wa-d); color:#fff; text-decoration:none; }
.wa-fab::before{
  content:""; position:absolute; inset:0; border-radius:var(--r-pill);
  background:var(--c-wa); z-index:-1; opacity:.6;
}

/* ---------- Reveal animation ---------- */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible{ opacity:1; transform:none; }
.reveal[data-delay="1"]{ transition-delay:.08s; }
.reveal[data-delay="2"]{ transition-delay:.16s; }
.reveal[data-delay="3"]{ transition-delay:.24s; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
  .reveal{ opacity:1; transform:none; }
  .material-card img,.gallery .g-tile img{ transition:none; }
  .wa-fab.wa-pulse::before{ animation:none; }
}

/* WhatsApp pulse ring (motion-gated via JS class) */
@media (prefers-reduced-motion: no-preference){
  .wa-fab.wa-pulse::before{
    animation: waPulse 2.4s ease-out infinite;
  }
  @keyframes waPulse{
    0%   { transform:scale(1);   opacity:.55; }
    70%  { transform:scale(1.8); opacity:0; }
    100% { transform:scale(1.8); opacity:0; }
  }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1024px){
  .materials-grid{ grid-template-columns:repeat(2,1fr); }
  .process-list{ grid-template-columns:repeat(2,1fr); }
  .process-step:nth-child(2){ border-right:0; }
  .process-step:nth-child(1),.process-step:nth-child(2){ border-bottom:1px solid var(--border); }
  .gallery{ grid-template-columns:repeat(3,1fr); }
  .footer-top{ grid-template-columns:1fr 1fr; }
}

@media (max-width:768px){
  /* Mobile nav */
  .nav-toggle{ display:block; }
  .nav-main{
    position:fixed; top:0; right:0; bottom:0; width:min(82vw,340px);
    background:var(--bg); border-left:1px solid var(--border);
    flex-direction:column; align-items:stretch; gap:0; padding:5.5rem 1.4rem 2rem;
    transform:translateX(100%); transition:transform var(--t-med) var(--ease);
    z-index:1060; overflow-y:auto;
  }
  .nav-main.is-open{ transform:translateX(0); box-shadow:-20px 0 60px rgba(31,31,31,0.25); }
  .nav-list{ flex-direction:column; align-items:stretch; gap:0; }
  .nav-list li{ border-bottom:1px solid var(--border); }
  .nav-list a{ display:block; padding:1rem .2rem; font-size:1.05rem; }
  .nav-list a[aria-current="page]{ border-bottom-color:transparent; }
  .nav-cta{ margin-top:1.2rem; }
  .nav-cta .btn{ width:100%; }

  .hero-grid{ grid-template-columns:1fr; }
  .hero-media{ min-height:240px; order:-1; }
  .hero-media::after{ background:linear-gradient(180deg, rgba(31,31,31,0.55), rgba(31,31,31,0.15)); }

  .split{ grid-template-columns:1fr; gap:1.6rem; }
  .split--reverse .split-media{ order:0; }

  .svc-grid{ grid-template-columns:1fr; }
  .svc-row{ border-right:0; }

  .quotes{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns:1fr; }
  .values-grid{ grid-template-columns:1fr; }
  .stat-blocks{ grid-template-columns:repeat(2,1fr); }

  .gallery{ grid-template-columns:repeat(2,1fr); }
  .gallery .g-tile.tall{ grid-row:auto; aspect-ratio:1/1; }

  .footer-top{ grid-template-columns:1fr; gap:1.6rem; }
  .cta-banner-inner{ flex-direction:column; align-items:flex-start; }
  .cta-banner .btn{ width:100%; }
}

@media (max-width:480px){
  :root{ --gutter:1.1rem; }
  .materials-grid{ grid-template-columns:1fr; }
  .hero-stats{ gap:1.4rem; }
  .hero-stat .num{ font-size:1.5rem; }
  .stat-blocks{ grid-template-columns:1fr; }
  .brand img{ height:38px; }
}

/* Print */
@media print{
  .site-header,.wa-fab,.nav-backdrop,.hero-ctas{ display:none !important; }
  body{ background:#fff; color:#000; }
}