/* =========================================================
   NOD HOUSES — Sistema de diseño
   Arquitectura · Construcción · Steel Frame
   ========================================================= */

:root{
  --bg:        #08090b;
  --bg-2:      #0d0f12;
  --bg-3:      #121519;
  --surface:   rgba(255,255,255,.03);
  --line:      rgba(255,255,255,.12);
  --line-soft: rgba(255,255,255,.07);
  --white:     #f4f5f7;
  --muted:     #9aa0a8;
  --muted-2:   #6b7178;
  --accent:    #cfe3ff;        /* halo frío futurista */
  --accent-2:  #7fa8d6;
  --glow:      0 0 40px rgba(160,196,255,.14);
  --ease:      cubic-bezier(.16,1,.3,1);
  --serif:     'Cormorant Garamond', Georgia, serif;
  --sans:      'Inter', system-ui, -apple-system, sans-serif;
  --display:   'Montserrat', var(--sans);
  --maxw:      1320px;
  --pad:       clamp(20px, 5vw, 80px);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:120px}
body.menu-open{overflow:hidden}
section[id]{scroll-margin-top:110px}
@media (max-width:760px){html{scroll-padding-top:80px}section[id]{scroll-margin-top:72px}}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--white);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  cursor:none;
}
@media (max-width:900px){ body{cursor:auto} }

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:#000}

/* ---------- Tipografía utilitaria ---------- */
.eyebrow{
  font-family:var(--display);
  font-weight:500;
  font-size:.72rem;
  letter-spacing:.42em;
  text-transform:uppercase;
  color:var(--accent-2);
  display:inline-flex;align-items:center;gap:14px;
}
.eyebrow::before{
  content:"";width:34px;height:1px;background:var(--accent-2);opacity:.7;
}
h1,h2,h3{font-family:var(--display);font-weight:200;line-height:1.05}
.h-xl{font-size:clamp(2.6rem,7vw,6rem);letter-spacing:-.01em}
.h-lg{font-size:clamp(2rem,4.6vw,3.8rem);letter-spacing:.005em}
.h-md{font-size:clamp(1.4rem,2.6vw,2.1rem);font-weight:300}
.lead{font-size:clamp(1.05rem,1.5vw,1.28rem);color:var(--muted);font-weight:300;line-height:1.75}
.thin{font-weight:200}
strong,.strong{font-weight:500;color:var(--white)}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
section{position:relative}
.section-pad{padding-block:clamp(90px,13vw,190px)}
.divider{height:1px;background:var(--line-soft);width:100%}

/* =========================================================
   CURSOR
   ========================================================= */
.cursor,.cursor-dot{position:fixed;top:0;left:0;pointer-events:none;z-index:9999;border-radius:50%;
  transform:translate(-50%,-50%);mix-blend-mode:difference}
.cursor{width:34px;height:34px;border:1px solid #fff;transition:width .3s var(--ease),height .3s var(--ease),background .3s}
.cursor-dot{width:5px;height:5px;background:#fff}
.cursor.hover{width:66px;height:66px;background:rgba(255,255,255,.08)}
@media (max-width:900px){.cursor,.cursor-dot{display:none}}

/* =========================================================
   PRELOADER
   ========================================================= */
#loader{position:fixed;inset:0;z-index:10000;background:var(--bg);
  display:flex;align-items:center;justify-content:center;flex-direction:column;gap:26px;
  transition:opacity .8s var(--ease),visibility .8s}
#loader.done{opacity:0;visibility:hidden}
.loader-mark{width:120px;height:74px;position:relative}
.loader-mark span{position:absolute;top:0;height:100%;border:1px solid rgba(255,255,255,.85);
  transform:scaleY(0);transform-origin:bottom;animation:grow 1.1s var(--ease) infinite alternate}
.loader-mark span:nth-child(1){left:0;width:42px;animation-delay:0s}
.loader-mark span:nth-child(2){left:52px;width:68px;animation-delay:.18s}
@keyframes grow{from{transform:scaleY(.12)}to{transform:scaleY(1)}}
.loader-num{font-family:var(--display);font-weight:200;font-size:.8rem;letter-spacing:.4em;color:var(--muted)}

/* =========================================================
   HEADER (topbar + nav)
   ========================================================= */
#siteheader{position:fixed;top:0;left:0;width:100%;z-index:900;
  transition:background .5s var(--ease),border-color .5s}
#siteheader.scrolled{background:rgba(8,9,11,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line-soft)}

/* --- Topbar de contacto siempre visible --- */
.topbar{display:flex;align-items:center;justify-content:flex-end;gap:26px;
  padding:9px var(--pad);border-bottom:1px solid var(--line-soft);
  font-family:var(--display);font-size:.72rem;letter-spacing:.08em;color:var(--muted);
  max-height:44px;overflow:hidden;transition:max-height .5s var(--ease),opacity .4s,padding .5s}
#siteheader.scrolled .topbar{max-height:0;opacity:0;padding-block:0;border-color:transparent}
.topbar a{display:inline-flex;align-items:center;gap:8px;transition:color .3s;white-space:nowrap}
.topbar a:hover{color:var(--white)}
.topbar a svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.6}
.topbar .sep{width:1px;height:14px;background:var(--line)}
.topbar .tb-addr{margin-right:auto;color:var(--muted-2)}
@media (max-width:760px){.topbar{justify-content:center;gap:18px}.topbar .tb-addr,.topbar .sep{display:none}}

/* --- Nav --- */
header.nav{padding:18px var(--pad);display:flex;align-items:center;justify-content:space-between;gap:20px;
  transition:padding .5s var(--ease)}
#siteheader.scrolled header.nav{padding-block:12px}
.nav-logo img{height:38px;width:auto;transition:height .4s var(--ease)}
#siteheader.scrolled .nav-logo img{height:30px}
.nav-right{display:flex;align-items:center;gap:clamp(18px,2.4vw,34px)}
.nav-menu{display:flex;gap:clamp(16px,1.8vw,30px);align-items:center;flex-wrap:wrap;justify-content:flex-end}
.nav-menu a{font-family:var(--display);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);position:relative;padding:4px 0;transition:color .3s}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--white);transition:width .35s var(--ease)}
.nav-menu a:hover{color:var(--white)}
.nav-menu a:hover::after{width:100%}
.nav-cta{display:inline-flex;align-items:center;gap:9px;border:1px solid var(--line);padding:11px 20px !important;
  color:var(--white)!important;border-radius:2px;transition:background .35s,color .35s,border-color .35s;white-space:nowrap}
.nav-cta svg{width:15px;height:15px;fill:currentColor}
.nav-cta::after{display:none}
.nav-cta:hover{background:#25D366;color:#fff!important;border-color:#25D366}
.nav-burger{display:none;flex-direction:column;gap:6px;width:30px;background:none;border:0;cursor:pointer}
.nav-burger span{height:1px;width:100%;background:var(--white);transition:.4s var(--ease)}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (max-width:1080px){
  /* Al abrir el menú se quita el backdrop-filter del header para que no "atrape"
     el overlay fijo dentro de la barra (bug de containing block) */
  body.menu-open #siteheader{backdrop-filter:none;-webkit-backdrop-filter:none;background:transparent;border-color:transparent}
  .nav-menu{position:fixed;top:0;left:0;width:100vw;height:100vh;height:100dvh;
    background:rgba(8,9,11,.98);backdrop-filter:blur(20px);
    flex-direction:column;justify-content:center;gap:30px;transform:translateX(100%);
    transition:transform .6s var(--ease);z-index:800}
  .nav-menu.open{transform:translateX(0)}
  .nav-menu a{font-size:1.15rem}
  .nav-burger{display:flex;z-index:901}
}
@media (max-width:520px){.nav-cta span{display:none}.nav-cta{padding:11px 13px !important}}

/* --- Botón flotante WhatsApp --- */
.wa-float{position:fixed;bottom:24px;right:24px;z-index:880;width:58px;height:58px;border-radius:50%;
  background:#25D366;display:grid;place-items:center;box-shadow:0 10px 30px rgba(0,0,0,.4);
  transition:transform .4s var(--ease);animation:waPulse 2.6s infinite}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:30px;height:30px;fill:#fff}
@keyframes waPulse{0%{box-shadow:0 0 0 0 rgba(37,211,102,.5)}70%{box-shadow:0 0 0 16px rgba(37,211,102,0)}100%{box-shadow:0 0 0 0 rgba(37,211,102,0)}}

/* =========================================================
   HERO
   ========================================================= */
.hero{min-height:100vh;display:flex;align-items:flex-end;position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;background:#08090b}
.hero-bg img,.hero-bg video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.06);filter:brightness(.6) saturate(.92)}
.hero-bg video{z-index:1}
.hero-fallback{z-index:0}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,9,11,.62) 0%,rgba(8,9,11,.3) 30%,rgba(8,9,11,.66) 62%,rgba(8,9,11,.95) 100%)}
.hero-grid{position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:min(14vw,140px) min(14vw,140px);mask-image:radial-gradient(circle at 50% 40%,#000,transparent 78%);opacity:.5}
.hero-inner{position:relative;z-index:2;width:100%;padding-bottom:clamp(50px,9vw,120px)}
.hero-inner .eyebrow,.hero h1,.hero-claim,.hero-meta{text-shadow:0 2px 24px rgba(0,0,0,.5)}
.hero-logo{width:min(560px,86vw);height:auto;margin:0 0 30px;
  filter:drop-shadow(0 6px 34px rgba(0,0,0,.55));
  opacity:0;transform:translateY(20px);animation:fade 1.1s var(--ease) .2s forwards}
@media (max-width:640px){.hero-logo{width:min(440px,88vw);margin-bottom:24px}}
.hero h1{margin:22px 0 26px}
.hero h1 .line{display:block;overflow:hidden}
.hero h1 .line span{display:block;transform:translateY(105%);animation:rise 1s var(--ease) forwards}
.hero h1 .line:nth-child(2) span{animation-delay:.12s}
@keyframes rise{to{transform:translateY(0)}}
.hero-claim{max-width:560px}
.hero-meta{display:flex;gap:clamp(24px,5vw,64px);margin-top:44px;flex-wrap:wrap;
  opacity:0;animation:fade 1s var(--ease) .6s forwards}
.hero-meta .m{border-left:1px solid var(--line);padding-left:16px}
.hero-meta .m b{display:block;font-family:var(--display);font-weight:200;font-size:1.9rem}
.hero-meta .m span{font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:#b9bfc7}
@keyframes fade{to{opacity:1}}
.scroll-cue{position:absolute;bottom:30px;right:var(--pad);z-index:2;writing-mode:vertical-rl;
  font-family:var(--display);font-size:.66rem;letter-spacing:.34em;text-transform:uppercase;color:var(--muted);
  display:flex;align-items:center;gap:14px;opacity:0;animation:fade 1s 1s forwards}
.scroll-cue::after{content:"";width:1px;height:54px;background:linear-gradient(var(--muted),transparent);animation:cue 1.8s infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}100%{transform:scaleY(0);transform-origin:bottom}}
@media (max-width:640px){.scroll-cue{display:none}}

/* =========================================================
   REVEAL ANIMATIONS
   ========================================================= */
.reveal{opacity:0;transform:translateY(38px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}.reveal.d4{transition-delay:.4s}
.line-grow{width:0;height:1px;background:var(--line);transition:width 1.2s var(--ease)}
.line-grow.in{width:100%}

/* =========================================================
   MANIFESTO
   ========================================================= */
.manifesto{display:grid;grid-template-columns:1fr 1.4fr;gap:clamp(30px,6vw,90px);align-items:start}
.manifesto .big{font-family:var(--display);font-weight:200;font-size:clamp(1.7rem,3.4vw,2.9rem);line-height:1.22}
.manifesto .big em{font-family:var(--serif);font-style:italic;font-weight:400;color:var(--accent)}
.manifesto .col p+p{margin-top:20px}
@media (max-width:860px){.manifesto{grid-template-columns:1fr;gap:32px}}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-soft);
  border:1px solid var(--line-soft);margin-top:clamp(50px,7vw,90px)}
.stats .stat{background:var(--bg);padding:clamp(26px,3vw,42px)}
.stats .stat b{font-family:var(--display);font-weight:200;font-size:clamp(2.4rem,4.4vw,3.6rem);display:block;line-height:1}
.stats .stat b .u{font-size:.4em;vertical-align:top;color:var(--accent-2);margin-left:2px}
.stats .stat span{font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:12px;display:block}
@media (max-width:860px){.stats{grid-template-columns:repeat(2,1fr)}}

/* =========================================================
   SISTEMA CONSTRUCTIVO
   ========================================================= */
.sistema{background:var(--bg-2);border-block:1px solid var(--line-soft)}
.sys-head{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:end;margin-bottom:clamp(46px,6vw,80px)}
@media (max-width:860px){.sys-head{grid-template-columns:1fr;gap:24px}}
.sys-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-soft);border:1px solid var(--line-soft)}
.sys-card{background:var(--bg-2);padding:clamp(28px,3vw,40px);min-height:280px;display:flex;flex-direction:column;
  justify-content:space-between;transition:background .5s var(--ease),transform .5s var(--ease);position:relative;overflow:hidden}
.sys-card:hover{background:var(--bg-3)}
.sys-card .idx{font-family:var(--display);font-size:.72rem;letter-spacing:.3em;color:var(--muted-2)}
.sys-card h3{font-size:1.35rem;font-weight:300;margin-bottom:12px}
.sys-card p{font-size:.92rem;color:var(--muted)}
.sys-card .glyph{position:absolute;right:-10px;bottom:-16px;font-family:var(--display);font-weight:200;
  font-size:7rem;color:rgba(255,255,255,.03);line-height:1;pointer-events:none}
@media (max-width:1000px){.sys-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.sys-grid{grid-template-columns:1fr}}

.methods{display:flex;gap:14px;flex-wrap:wrap;margin-top:40px}
.methods .tag{border:1px solid var(--line);border-radius:2px;padding:10px 20px;font-size:.82rem;
  letter-spacing:.05em;color:var(--muted);transition:.35s}
.methods .tag.on{border-color:var(--white);color:var(--white)}
.methods .tag:hover{border-color:var(--white);color:var(--white)}

/* =========================================================
   SERVICIOS
   ========================================================= */
.serv{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,40px)}
@media (max-width:860px){.serv{grid-template-columns:1fr}}
.serv-card{border:1px solid var(--line-soft);padding:clamp(30px,3vw,44px);border-radius:3px;position:relative;
  transition:border-color .5s,transform .5s var(--ease);background:var(--surface);overflow:hidden}
.serv-card:hover{border-color:var(--line);transform:translateY(-6px)}
.serv-card .num{font-family:var(--display);font-weight:200;font-size:.8rem;letter-spacing:.3em;color:var(--accent-2)}
.serv-card h3{font-size:1.7rem;font-weight:300;margin:30px 0 16px}
.serv-card p{color:var(--muted);font-size:.96rem}
.serv-card .arrow{margin-top:28px;display:inline-flex;align-items:center;gap:10px;font-size:.76rem;
  letter-spacing:.2em;text-transform:uppercase;color:var(--muted);transition:gap .35s,color .35s}
.serv-card:hover .arrow{gap:18px;color:var(--white)}

/* =========================================================
   PROCESO / TIMELINE
   ========================================================= */
.proceso{background:var(--bg-2);border-block:1px solid var(--line-soft)}
.timeline{margin-top:clamp(46px,6vw,80px);border-top:1px solid var(--line-soft)}
.step{display:grid;grid-template-columns:120px 1fr 1.2fr;gap:clamp(20px,4vw,60px);
  padding:clamp(30px,4vw,50px) 0;border-bottom:1px solid var(--line-soft);align-items:baseline;
  transition:background .5s;position:relative}
.step:hover{background:rgba(255,255,255,.015)}
.step .st-num{font-family:var(--display);font-weight:200;font-size:clamp(2rem,4vw,3.2rem);color:var(--muted-2);transition:color .5s}
.step:hover .st-num{color:var(--accent)}
.step h3{font-size:clamp(1.3rem,2.2vw,1.9rem);font-weight:300}
.step p{color:var(--muted);font-size:.98rem;max-width:52ch}
@media (max-width:820px){.step{grid-template-columns:70px 1fr;gap:18px}.step p{grid-column:1/-1}}

/* =========================================================
   PROYECTOS
   ========================================================= */
.proj-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap;margin-bottom:clamp(40px,5vw,70px)}
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(16px,2.2vw,28px)}
.swipe-hint{display:none;align-items:center;gap:10px;margin:0 0 20px;
  font-family:var(--display);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted-2)}
.swipe-hint svg{width:26px;height:12px;stroke:currentColor;fill:none;stroke-width:1.4;animation:hintMove 1.6s var(--ease) infinite}
@keyframes hintMove{0%,100%{transform:translateX(0)}50%{transform:translateX(6px)}}
@media (max-width:760px){
  .proj-grid{grid-template-columns:none;display:flex;overflow-x:auto;scroll-snap-type:x mandatory;
    gap:14px;padding-bottom:16px;margin-inline:calc(var(--pad)*-1);padding-inline:var(--pad);
    scroll-padding-inline:var(--pad);-webkit-overflow-scrolling:touch}
  .proj-grid::-webkit-scrollbar{display:none}
  .proj{flex:0 0 84%;scroll-snap-align:center;aspect-ratio:3/4}
  .swipe-hint{display:flex}
}
.proj{position:relative;overflow:hidden;border-radius:3px;cursor:pointer;background:var(--bg-3);aspect-ratio:4/3}
.proj:nth-child(1),.proj:nth-child(4){aspect-ratio:4/3}
.proj img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease),filter .6s;filter:brightness(.82)}
.proj:hover img{transform:scale(1.06);filter:brightness(.6)}
.proj-info{position:absolute;inset:0;padding:clamp(22px,2.6vw,38px);display:flex;flex-direction:column;
  justify-content:flex-end;z-index:2;
  background:linear-gradient(180deg,transparent 40%,rgba(8,9,11,.82) 100%)}
.proj-info .loc{font-family:var(--display);font-size:.72rem;letter-spacing:.26em;text-transform:uppercase;color:var(--accent-2);margin-bottom:10px}
.proj-info h3{font-size:clamp(1.6rem,2.6vw,2.4rem);font-weight:300}
.proj-info .plus{position:absolute;top:clamp(22px,2.6vw,38px);right:clamp(22px,2.6vw,38px);
  width:46px;height:46px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;
  transition:.45s var(--ease)}
.proj:hover .plus{background:var(--white);border-color:var(--white)}
.proj:hover .plus svg{stroke:#000}
.proj-info .plus svg{width:16px;height:16px;stroke:#fff;transition:stroke .45s}

/* ---------- Lightbox ---------- */
.lb{position:fixed;inset:0;z-index:9500;background:rgba(6,7,9,.96);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transition:opacity .6s var(--ease),visibility .6s;
  display:grid;grid-template-columns:1.35fr 1fr;overflow:hidden}
.lb.open{opacity:1;visibility:visible}
.lb-media{position:relative;background:#000;overflow:hidden}
.lb-media .lb-slide{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;opacity:0;transition:opacity .7s var(--ease)}
.lb-media .lb-slide.active{opacity:1}
.lb-thumbs{position:absolute;bottom:24px;left:24px;display:flex;gap:10px;z-index:3}
.lb-thumbs button{width:56px;height:40px;border:1px solid var(--line);padding:0;overflow:hidden;cursor:none;opacity:.5;transition:.35s;background:none}
.lb-thumbs button.on{opacity:1;border-color:var(--white)}
.lb-thumbs img{width:100%;height:100%;object-fit:cover;position:static}
.lb-side{padding:clamp(40px,5vw,80px);display:flex;flex-direction:column;justify-content:center;overflow-y:auto}
.lb-side .loc{font-family:var(--display);letter-spacing:.28em;text-transform:uppercase;font-size:.74rem;color:var(--accent-2)}
.lb-side h2{font-size:clamp(2rem,3.4vw,3.2rem);font-weight:200;margin:18px 0 24px}
.lb-side p{color:var(--muted);font-size:1rem;line-height:1.8}
.lb-facts{display:flex;gap:34px;margin-top:34px;flex-wrap:wrap}
.lb-facts .f b{font-family:var(--display);font-weight:300;font-size:1.05rem;display:block}
.lb-facts .f span{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2)}
.lb-close{position:fixed;top:26px;right:30px;z-index:9600;width:52px;height:52px;border:1px solid var(--line);
  background:rgba(0,0,0,.3);border-radius:50%;display:grid;place-items:center;cursor:none;transition:.4s}
.lb-close:hover{background:var(--white)}
.lb-close:hover svg{stroke:#000}
.lb-close svg{width:18px;height:18px;stroke:#fff;transition:stroke .4s}
@media (max-width:900px){
  .lb{grid-template-columns:1fr;grid-template-rows:45vh 1fr;cursor:auto}
  .lb-thumbs button,.lb-close{cursor:pointer}
}

/* =========================================================
   SOSTENIBILIDAD (split)
   ========================================================= */
.split{display:grid;grid-template-columns:1fr 1fr;min-height:70vh}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.split-media{position:relative;overflow:hidden;min-height:340px}
.split-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;filter:brightness(.8)}
.split-txt{padding:clamp(50px,7vw,110px) var(--pad);display:flex;flex-direction:column;justify-content:center;background:var(--bg-2)}
.split-txt .list{margin-top:36px;display:flex;flex-direction:column}
.split-txt .list .li{display:flex;gap:20px;padding:20px 0;border-top:1px solid var(--line-soft);align-items:baseline}
.split-txt .list .li:last-child{border-bottom:1px solid var(--line-soft)}
.split-txt .list .li i{font-family:var(--display);font-style:normal;font-size:.78rem;color:var(--accent-2);letter-spacing:.2em}
.split-txt .list .li p{color:var(--muted);font-size:.96rem}
.split-txt .list .li b{color:var(--white);font-weight:500}

/* =========================================================
   ÁMBITO / CTA banda
   ========================================================= */
.band{text-align:center;padding-block:clamp(90px,14vw,180px);position:relative;overflow:hidden}
.band .ghost{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none;
  font-family:var(--display);font-weight:200;font-size:clamp(6rem,24vw,20rem);color:rgba(255,255,255,.018);white-space:nowrap;letter-spacing:.1em}
.band h2{position:relative;z-index:2}

/* =========================================================
   CONTACTO
   ========================================================= */
.contact{background:var(--bg-2);border-top:1px solid var(--line-soft)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,90px)}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr;gap:44px}}
.contact-info .row{padding:22px 0;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;gap:20px}
.contact-info .row:last-child{border-bottom:1px solid var(--line-soft)}
.contact-info .row span{font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2)}
.contact-info .row a,.contact-info .row b{font-family:var(--display);font-weight:300;font-size:1.1rem}
form .fld{position:relative;margin-bottom:30px}
form label{position:absolute;left:0;top:14px;color:var(--muted-2);font-size:.95rem;transition:.35s var(--ease);pointer-events:none}
form input,form textarea,form select{width:100%;background:none;border:0;border-bottom:1px solid var(--line);
  padding:14px 0;color:var(--white);font-family:var(--sans);font-size:1rem;outline:none;transition:border-color .4s;cursor:none}
form textarea{resize:none;min-height:90px}
form input:focus,form textarea:focus,form select:focus{border-color:var(--white)}
form input:focus+label,form textarea:focus+label,
form input:not(:placeholder-shown)+label,form textarea:not(:placeholder-shown)+label{
  top:-12px;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-2)}
form select{color:var(--muted)}
form option{background:var(--bg-2)}
.btn{display:inline-flex;align-items:center;gap:14px;background:var(--white);color:#000;border:0;
  padding:17px 34px;font-family:var(--display);font-weight:500;font-size:.8rem;letter-spacing:.2em;
  text-transform:uppercase;border-radius:2px;cursor:none;transition:.4s var(--ease);overflow:hidden;position:relative}
.btn:hover{background:var(--accent);transform:translateY(-2px);box-shadow:var(--glow)}
.btn.ghost{background:none;color:var(--white);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--white);color:#000}
.form-note{font-size:.8rem;color:var(--muted-2);margin-top:14px}
.form-ok{color:var(--accent);font-size:.9rem;margin-top:16px;display:none}

/* =========================================================
   FOOTER
   ========================================================= */
footer{padding:clamp(50px,7vw,90px) var(--pad) 40px;background:var(--bg)}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:60px;border-bottom:1px solid var(--line-soft)}
@media (max-width:760px){.foot-top{grid-template-columns:1fr;gap:34px}}
.foot-top img{height:40px;width:auto;margin-bottom:22px}
.foot-top p{color:var(--muted);font-size:.94rem;max-width:36ch}
.foot-col h4{font-family:var(--display);font-weight:500;font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--muted-2);margin-bottom:18px}
.foot-col a{display:block;color:var(--muted);padding:6px 0;transition:color .3s;font-size:.95rem}
.foot-col a:hover{color:var(--white)}
.foot-bot{display:flex;justify-content:space-between;padding-top:30px;gap:16px;flex-wrap:wrap;
  font-size:.78rem;color:var(--muted-2);letter-spacing:.05em}

/* =========================================================
   PROGRESS BAR
   ========================================================= */
.progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--accent-2),var(--accent));z-index:950}

/* =========================================================
   VENTAJAS / DIFERENCIADORES
   ========================================================= */
.vent{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);
  border:1px solid var(--line-soft);margin-top:clamp(46px,6vw,80px)}
@media (max-width:900px){.vent{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.vent{grid-template-columns:1fr}}
.vent .v{background:var(--bg);padding:clamp(28px,3vw,42px);transition:background .5s;position:relative}
.vent .v:hover{background:var(--bg-3)}
.vent .v .ico{width:44px;height:44px;margin-bottom:24px;stroke:var(--accent);fill:none;stroke-width:1.2}
.vent .v h3{font-size:1.25rem;font-weight:300;margin-bottom:12px}
.vent .v p{color:var(--muted);font-size:.94rem}

/* =========================================================
   COMPARATIVA
   ========================================================= */
.compare{margin-top:clamp(46px,6vw,80px);border:1px solid var(--line-soft);overflow-x:auto}
.compare table{width:100%;border-collapse:collapse;min-width:560px}
.compare th,.compare td{text-align:left;padding:20px clamp(16px,2.4vw,30px);border-bottom:1px solid var(--line-soft);font-size:.95rem}
.compare thead th{font-family:var(--display);font-weight:400;letter-spacing:.14em;text-transform:uppercase;font-size:.74rem;color:var(--muted-2)}
.compare thead th.hl{color:var(--accent)}
.compare tbody td:first-child{color:var(--muted)}
.compare tbody td.hl{color:var(--white);font-weight:500}
.compare tbody tr:last-child td{border-bottom:0}
.compare .col-nod{background:rgba(160,196,255,.04)}

/* =========================================================
   FAQ
   ========================================================= */
.faq{margin-top:clamp(40px,5vw,64px);border-top:1px solid var(--line-soft)}
.faq-item{border-bottom:1px solid var(--line-soft)}
.faq-q{width:100%;background:none;border:0;cursor:none;text-align:left;color:var(--white);
  font-family:var(--display);font-weight:300;font-size:clamp(1.05rem,1.9vw,1.4rem);
  padding:clamp(22px,2.6vw,32px) 50px clamp(22px,2.6vw,32px) 0;position:relative;display:flex;transition:color .3s}
.faq-q:hover{color:var(--accent)}
.faq-q .pm{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:20px;height:20px}
.faq-q .pm::before,.faq-q .pm::after{content:"";position:absolute;background:currentColor;transition:transform .4s var(--ease);top:50%;left:0}
.faq-q .pm::before{width:20px;height:1px;margin-top:-.5px}
.faq-q .pm::after{width:1px;height:20px;left:50%;margin-left:-.5px}
.faq-item.open .faq-q .pm::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .5s var(--ease)}
.faq-a p{color:var(--muted);padding:0 60px clamp(24px,3vw,34px) 0;font-size:1rem;line-height:1.8;max-width:75ch}
@media (max-width:760px){.faq-a p{padding-right:0}}

/* =========================================================
   MAPA / CONTACTO EXTRA
   ========================================================= */
.contact-extra{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:clamp(60px,8vw,110px);
  border:1px solid var(--line-soft)}
@media (max-width:860px){.contact-extra{grid-template-columns:1fr}}
.contact-extra .map{min-height:340px;position:relative;filter:grayscale(1) invert(.92) contrast(.9);opacity:.9}
.contact-extra .map iframe{width:100%;height:100%;border:0;position:absolute;inset:0}
.contact-extra .cbox{padding:clamp(34px,4vw,60px);display:flex;flex-direction:column;justify-content:center;background:var(--bg-3);gap:26px}
.cbox .crow{display:flex;gap:18px;align-items:flex-start}
.cbox .crow svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:1.4;flex:none;margin-top:3px}
.cbox .crow span{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2);display:block;margin-bottom:5px}
.cbox .crow a,.cbox .crow b{font-family:var(--display);font-weight:300;font-size:1.12rem}
.cbox .crow a{transition:color .3s}.cbox .crow a:hover{color:var(--accent)}

/* Botón WhatsApp del formulario */
.btn.wa{background:#25D366;color:#fff}
.btn.wa:hover{background:#1eb457;box-shadow:0 0 30px rgba(37,211,102,.35)}
.form-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.form-or{color:var(--muted-2);font-size:.8rem}

/* =========================================================
   SELECTOR DE SISTEMA CONSTRUCTIVO (tabs clicables)
   ========================================================= */
.methods .tag{cursor:pointer;user-select:none}
.sys-info{margin-top:26px;border:1px solid var(--line-soft);border-radius:3px;
  background:var(--surface);padding:clamp(24px,3vw,34px);min-height:120px}
.sys-info h3{font-size:1.3rem;font-weight:300;margin-bottom:12px}
.sys-info p{color:var(--muted);font-size:.98rem;max-width:70ch;margin:0}
.sys-info .panel{display:none;animation:fadePanel .5s var(--ease)}
.sys-info .panel.on{display:block}
@keyframes fadePanel{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* =========================================================
   COOKIES (RGPD / LSSI-CE)
   ========================================================= */
.cookie{position:fixed;left:0;right:0;bottom:0;z-index:9700;background:rgba(13,15,18,.97);
  backdrop-filter:blur(16px);border-top:1px solid var(--line);padding:22px var(--pad);
  transform:translateY(120%);transition:transform .6s var(--ease);display:flex;align-items:center;
  gap:24px;flex-wrap:wrap;justify-content:space-between}
.cookie.show{transform:translateY(0)}
.cookie .ck-txt{flex:1 1 380px;max-width:720px}
.cookie h4{font-family:var(--display);font-weight:400;font-size:.95rem;letter-spacing:.06em;margin-bottom:6px}
.cookie p{color:var(--muted);font-size:.86rem;line-height:1.6}
.cookie p a{color:var(--accent);text-decoration:underline}
.cookie .ck-btns{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.ck-btn{font-family:var(--display);font-weight:500;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  padding:12px 22px;border-radius:2px;cursor:none;border:1px solid var(--line);color:var(--white);
  background:none;transition:.35s var(--ease);white-space:nowrap}
.ck-btn:hover{border-color:var(--white)}
.ck-btn.accept{background:var(--white);color:#000;border-color:var(--white)}
.ck-btn.accept:hover{background:var(--accent);box-shadow:var(--glow)}
.ck-link{background:none;border:0;color:var(--muted);font-size:.78rem;text-decoration:underline;cursor:none}
.ck-link:hover{color:var(--white)}
/* Panel de configuración */
.ck-config{display:none;flex-basis:100%;margin-top:18px;border-top:1px solid var(--line-soft);padding-top:18px;gap:16px;flex-direction:column}
.cookie.config .ck-config{display:flex}
.ck-row{display:flex;justify-content:space-between;align-items:center;gap:20px}
.ck-row .l b{font-family:var(--display);font-weight:400;font-size:.9rem;display:block}
.ck-row .l span{color:var(--muted-2);font-size:.78rem}
.ck-switch{position:relative;width:44px;height:24px;flex:none}
.ck-switch input{opacity:0;width:0;height:0}
.ck-switch .sl{position:absolute;inset:0;background:var(--bg-3);border:1px solid var(--line);border-radius:20px;transition:.3s;cursor:none}
.ck-switch .sl::before{content:"";position:absolute;width:16px;height:16px;left:3px;top:3px;background:var(--muted);border-radius:50%;transition:.3s}
.ck-switch input:checked+.sl{background:rgba(160,196,255,.25);border-color:var(--accent)}
.ck-switch input:checked+.sl::before{transform:translateX(20px);background:var(--accent)}
.ck-switch input:disabled+.sl{opacity:.55}
/* Placeholder del mapa cuando no hay consentimiento */
.map-block{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:24px;background:var(--bg-3);gap:14px;z-index:2}
.map-block p{color:var(--muted);font-size:.9rem;max-width:36ch}
/* Botón reabrir preferencias */
.ck-reopen{position:fixed;left:18px;bottom:18px;z-index:870;width:42px;height:42px;border-radius:50%;
  background:var(--bg-3);border:1px solid var(--line);display:none;place-items:center;cursor:none;transition:.35s}
.ck-reopen.show{display:grid}
.ck-reopen:hover{border-color:var(--white)}
.ck-reopen svg{width:20px;height:20px;stroke:var(--muted);fill:none;stroke-width:1.4}
@media (max-width:640px){
  .cookie{padding:18px 20px;gap:14px}
  .cookie .ck-btns{width:100%}
  .ck-btn{flex:1;text-align:center;padding:13px 12px}
}

/* =========================================================
   MÓVIL — ajustes globales
   ========================================================= */
@media (max-width:760px){
  /* Topbar compacta en una línea */
  .topbar{gap:16px;padding:8px 16px;font-size:.66rem;letter-spacing:.02em;justify-content:center}
  .topbar a svg{width:12px;height:12px}
  /* Nav: solo logo + burger (el botón WhatsApp lo cubre el flotante) */
  .nav-cta{display:none}
  header.nav{padding:14px 20px}
  .nav-logo img{height:30px}

  /* HERO: contenido por debajo de la cabecera, sin solapes */
  .hero{display:block;align-items:unset;min-height:100svh;padding-top:120px}
  .hero-inner{padding-bottom:56px;padding-top:0}
  .hero-logo{width:min(280px,66vw);margin-bottom:22px}
  .hero .eyebrow{font-size:.6rem;letter-spacing:.24em}
  .hero h1{font-size:clamp(2.3rem,10vw,3.4rem);margin:16px 0 20px}
  .hero-claim{font-size:1rem}
  .hero-meta{gap:14px 20px;margin-top:30px}
  .hero-meta .m b{font-size:1.4rem}
  .hero-meta .m span{font-size:.66rem}

  /* Tipografías de sección un poco más contenidas */
  .h-lg{font-size:clamp(1.9rem,8vw,2.6rem)}
  .manifesto .big{font-size:clamp(1.5rem,6.4vw,2rem)}

  /* Lightbox apilado con scroll cómodo */
  .lb-side{padding:26px 22px 40px}
  .lb-thumbs{bottom:12px;left:12px}
  .lb-thumbs button{width:46px;height:34px}

  /* Botón flotante un poco más pequeño */
  .wa-float{width:52px;height:52px;bottom:18px;right:18px}
  .wa-float svg{width:26px;height:26px}

  /* ---- WEB MÁS CORTA: menos aire vertical ---- */
  .section-pad{padding-block:clamp(56px,11vw,84px)}
  .hero{padding-top:104px}
  .band{padding-block:clamp(64px,16vw,110px)}

  /* ---- Carruseles deslizables (acortan mucho el scroll) ---- */
  .vent,.serv,.sys-grid{display:flex !important;grid-template-columns:none !important;
    overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;background:none !important;border:0 !important;
    margin-inline:calc(var(--pad)*-1);padding:4px var(--pad) 14px;scroll-padding-inline:var(--pad);
    -webkit-overflow-scrolling:touch}
  .vent::-webkit-scrollbar,.serv::-webkit-scrollbar,.sys-grid::-webkit-scrollbar{display:none}
  .vent .v,.serv-card,.sys-card{flex:0 0 78%;scroll-snap-align:center;
    border:1px solid var(--line-soft) !important;border-radius:3px}
  .sys-card{min-height:240px}
  .serv-card:hover,.vent .v:hover{transform:none}
  /* Tarjetas de carrusel siempre visibles (evita quedar en opacidad 0 al deslizar) */
  .vent .v.reveal,.serv-card.reveal,.sys-card.reveal,.proj.reveal{opacity:1;transform:none}

  /* Timeline más compacta */
  .step{padding-block:22px}
  .step p{font-size:.9rem}

  /* Tabla comparativa compacta */
  .compare table{min-width:460px}
  .compare th,.compare td{padding:12px 12px;font-size:.82rem}

  /* Portada: meta en fila compacta y algo menos de aire */
  .hero-meta{flex-wrap:nowrap;gap:12px;margin-top:24px}
  .hero-meta .m{padding-left:10px}
  .hero-meta .m b{font-size:1.15rem}
  .hero-meta .m span{font-size:.58rem;letter-spacing:.1em}
  .hero-claim{font-size:.95rem}

  /* Estudio: manifiesto y stats más juntos */
  .manifesto{gap:22px}
  .manifesto .big{font-size:clamp(1.4rem,6vw,1.85rem)}
  .stats{margin-top:36px}
  .stats .stat{padding:22px 20px}

  /* Sostenibilidad: imagen más baja */
  .split-media{min-height:240px}
}

@media (max-width:400px){
  .topbar{gap:12px;font-size:.6rem}
  .hero-meta{gap:12px 16px}
  .hero-meta .m{padding-left:12px}
}

/* =========================================================
   PÁGINAS LEGALES
   ========================================================= */
.legal-nav{position:fixed;top:0;left:0;width:100%;z-index:900;display:flex;align-items:center;
  justify-content:space-between;padding:18px var(--pad);background:rgba(8,9,11,.9);
  backdrop-filter:blur(16px);border-bottom:1px solid var(--line-soft)}
.legal-nav img{height:30px;width:auto}
.legal-nav a.back{font-family:var(--display);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);display:inline-flex;gap:10px;align-items:center;transition:color .3s}
.legal-nav a.back:hover{color:var(--white)}
.legal{max-width:820px;margin:0 auto;padding:140px var(--pad) 100px}
.legal h1{font-family:var(--display);font-weight:200;font-size:clamp(2rem,5vw,3.2rem);margin-bottom:14px}
.legal .updated{color:var(--muted-2);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:50px;display:block}
.legal h2{font-family:var(--display);font-weight:400;font-size:1.35rem;margin:44px 0 16px;color:var(--white)}
.legal h3{font-family:var(--display);font-weight:400;font-size:1.05rem;margin:26px 0 10px;color:var(--white)}
.legal p,.legal li{color:var(--muted);font-size:.98rem;line-height:1.8;margin-bottom:14px}
.legal ul{padding-left:22px;margin-bottom:14px}
.legal li{margin-bottom:8px}
.legal a{color:var(--accent);text-decoration:underline}
.legal strong{color:var(--white);font-weight:500}
.legal table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.9rem}
.legal th,.legal td{border:1px solid var(--line-soft);padding:12px 14px;text-align:left}
.legal th{font-family:var(--display);font-weight:400;color:var(--white);background:var(--surface)}
.legal .box{border:1px solid var(--line-soft);border-radius:3px;padding:24px 26px;margin:20px 0;background:var(--surface)}

/* reduce motion */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}