:root{--ink:#08111f;--ink-2:#0d1a2e;--line:#1c2d47;--paper:#f3f6fa;--muted:#a9b6c8;--cold:#0a8cff;--cold-deep:#0b5cad;--warm:#ff7a12;
--display:'Montserrat','Arial Black',system-ui,sans-serif;--body:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--ink);color:var(--paper);font-family:var(--body);font-size:17px;line-height:1.6}
img{display:block;max-width:100%}
a{color:inherit}
:focus-visible{outline:3px solid var(--warm);outline-offset:3px;border-radius:6px}
.wrap{width:min(1120px,100% - 40px);margin-inline:auto}

/* Botón principal: la única acción de la página */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:58px;padding:0 30px;border-radius:999px;background:var(--cold);color:#fff;font:700 17px/1 var(--display);text-decoration:none;transition:background .15s ease,transform .15s ease}
.btn:hover{background:#2b9dff;transform:translateY(-2px)}
.btn{white-space:nowrap}
@media (max-width:479px){.long{display:none}}
.btn.small{min-height:44px;padding:0 20px;font-size:14px;gap:8px}

/* Cabecera */
header.top{position:absolute;inset:0 0 auto 0;z-index:5}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:20px}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none}
.brand img{width:62px;height:auto}
.wm b{display:block;font:800 clamp(22px,5.4vw,29px)/1 var(--display);letter-spacing:.01em}
.wm b span{color:var(--cold)}
.wm i{display:flex;align-items:center;gap:8px;margin-top:6px;font:600 clamp(8px,2.2vw,10.5px)/1 var(--body);font-style:normal;letter-spacing:.38em;color:#dfe8f5}
.wm u{flex:1;height:1px;background:#dfe8f5;opacity:.7}
.top .btn span{display:none}
@media (min-width:560px){.top .btn span{display:inline}}

/* Portada */
.hero{position:relative;overflow:hidden;isolation:isolate;padding:150px 0 90px}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(60% 80% at 6% 25%,rgba(10,140,255,.36),transparent 70%),radial-gradient(55% 75% at 100% 85%,rgba(255,122,18,.28),transparent 70%),var(--ink)}
.hero .wrap{display:grid;gap:44px;align-items:center}
.hero h1{font:800 clamp(34px,6.2vw,64px)/1.05 var(--display);letter-spacing:-.01em;max-width:16ch;text-wrap:balance}
.hero p.lead{margin-top:22px;max-width:40ch;font-size:clamp(18px,2.2vw,21px);color:#d6e0ee}
.hero .btn{margin-top:34px}
.compose{max-width:380px;border:1px solid var(--line);border-radius:22px;background:rgba(13,26,46,.72);padding:20px 20px 24px;backdrop-filter:blur(6px)}
.compose header{display:flex;align-items:center;gap:12px;padding-bottom:16px;margin-bottom:18px;border-bottom:1px solid var(--line);font:700 15px/1.2 var(--display)}
.compose header img{width:40px;height:auto}
.compose small{display:block;margin-top:2px;font:400 13px/1.3 var(--body);color:var(--muted)}
.bubble{margin-left:auto;max-width:92%;padding:14px 16px;border-radius:18px 18px 4px 18px;background:var(--cold-deep);color:#fff;font-size:16px;line-height:1.55}
.bubble i{font-style:normal;opacity:.7}
@media (min-width:900px){.hero .wrap{grid-template-columns:1.15fr .85fr}.compose{justify-self:end}}

section{padding:84px 0}
h2{font:800 clamp(28px,4.2vw,42px)/1.1 var(--display);max-width:22ch;text-wrap:balance}

/* Servicios = el embudo: cada fila abre WhatsApp con el mensaje escrito */
#servicios{background:var(--ink-2);border-block:1px solid var(--line)}
.tiles{margin-top:38px;border-top:1px solid var(--line);display:grid;column-gap:56px}
.tiles li{list-style:none;border-bottom:1px solid var(--line)}
.tile{display:grid;grid-template-columns:60px 1fr 24px;gap:20px;align-items:center;padding:22px 10px;text-decoration:none;transition:background .15s ease}
.tile:hover{background:rgba(10,140,255,.09)}
.tile img,.tile .ico{height:50px;width:auto;max-width:60px;justify-self:center}
.tile .ico{width:50px}
.tile .tx b{display:block;font:700 clamp(18px,2.3vw,21px)/1.2 var(--display)}
.tile .tx span{display:block;margin-top:3px;color:var(--muted);font-size:15.5px;line-height:1.45}
.tile .go{color:var(--cold);justify-self:end}
@media (min-width:820px){.tiles{grid-template-columns:1fr 1fr}}

/* Cómo trabajamos */
.steps{margin-top:44px;display:grid;gap:30px;counter-reset:s}
.steps li{list-style:none;counter-increment:s;padding-top:18px;border-top:2px solid var(--line)}
.steps li::before{content:counter(s);display:block;margin-bottom:10px;font:800 40px/1 var(--display);color:var(--cold)}
.steps h3{font:700 20px/1.25 var(--display)}
.steps p{margin-top:8px;color:var(--muted);font-size:16px}
@media (min-width:900px){.steps{grid-template-columns:repeat(4,1fr);gap:28px}}

/* Preguntas */
#faq{background:var(--ink-2);border-block:1px solid var(--line)}
.faq{margin-top:34px;border-top:1px solid var(--line);max-width:780px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;position:relative;padding:22px 48px 22px 0;font:700 clamp(17px,2.2vw,20px)/1.3 var(--display)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);font:500 30px/1 var(--body);color:var(--cold)}
.faq details[open] summary::after{content:"\2013"}
.faq p{padding:0 48px 24px 0;color:var(--muted);max-width:62ch}

/* Cierre */
#contacto .btn{margin-top:30px}
.alt{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px 28px;color:var(--muted)}
.alt a{color:#fff;text-underline-offset:3px}
footer{padding:30px 0 40px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}

/* Barra fija en móvil: aparece al salir de la portada */
.dock{position:fixed;inset:auto 0 0 0;z-index:20;display:grid;grid-template-columns:1fr 58px;gap:10px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:rgba(8,17,31,.94);border-top:1px solid var(--line);backdrop-filter:blur(8px);transform:translateY(110%);transition:transform .25s ease}
.dock.on{transform:none}
.dock .btn{margin:0;min-height:52px;font-size:16px}
.dock .call{display:grid;place-items:center;border:2px solid rgba(255,255,255,.5);border-radius:50%;width:58px;height:52px;border-radius:999px;color:#fff}
@media (min-width:760px){.dock{display:none}section{padding:104px 0}}
@media (max-width:759px){footer{padding-bottom:96px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.dock,.tile{transition:none}.btn:hover{transform:none}}
/* ===== Multi-página ===== */
.nav{display:none}
.menu{position:relative}
.menu summary{list-style:none;cursor:pointer;display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:rgba(8,17,31,.55)}
.menu summary::-webkit-details-marker{display:none}
.menu ul{position:absolute;right:0;top:54px;min-width:230px;padding:10px;border:1px solid var(--line);border-radius:16px;background:var(--ink-2);box-shadow:0 20px 40px rgba(0,0,0,.4)}
.menu li{list-style:none}
.menu a{display:block;padding:12px 14px;border-radius:10px;text-decoration:none;font-weight:500}
.menu a:hover{background:rgba(10,140,255,.12)}
.top .right{display:flex;align-items:center;gap:10px}
@media (min-width:980px){
  .nav{display:flex;gap:26px;margin-left:auto;margin-right:26px}
  .nav a{text-decoration:none;font-weight:500;font-size:15.5px;color:#dfe8f5}
  .nav a:hover{color:#fff;text-decoration:underline;text-underline-offset:6px;text-decoration-color:var(--cold)}
  .menu{display:none}
}
.hero.page{padding:132px 0 56px}
.hero.page .wrap{display:block}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted);text-underline-offset:3px}
.hero.page h1{font-size:clamp(32px,5.2vw,54px);max-width:20ch}
.hero.page p.lead{max-width:56ch}

.layout{display:grid;gap:40px;padding-block:60px 90px}
.prose{max-width:720px}
.prose h2{font:800 clamp(24px,3.2vw,32px)/1.15 var(--display);max-width:none;margin:48px 0 14px}
.prose h2:first-child{margin-top:0}
.prose h3{font:700 19px/1.3 var(--display);margin:26px 0 6px}
.prose p{margin-top:12px;color:#d3deec}
.prose p.muted{color:var(--muted)}
.prose a{color:#fff;text-underline-offset:3px;text-decoration-color:var(--cold)}
.checks{margin-top:16px;border-top:1px solid var(--line)}
.checks li{list-style:none;padding:16px 0 16px 34px;border-bottom:1px solid var(--line);position:relative;color:#d3deec}
.checks li::before{content:"";position:absolute;left:4px;top:24px;width:12px;height:12px;border-radius:50%;background:var(--cold)}
.checks b{display:block;color:#fff;font-weight:600}
.todo{margin-top:16px;counter-reset:t}
.todo li{list-style:none;counter-increment:t;position:relative;padding:12px 0 12px 46px;color:#d3deec}
.todo li::before{content:counter(t);position:absolute;left:0;top:10px;width:30px;height:30px;border-radius:50%;border:2px solid var(--cold);display:grid;place-items:center;font:800 14px/1 var(--display);color:#fff}
.aside{display:none}
@media (min-width:980px){
  .layout{grid-template-columns:minmax(0,1fr) 330px;gap:64px}
  .aside{display:block}
  .aside .box{position:sticky;top:28px;padding:26px;border:1px solid var(--line);border-radius:22px;background:var(--ink-2)}
  .aside h2{font-size:22px;margin:0 0 8px}
  .aside p{color:var(--muted);font-size:15.5px}
  .aside .btn{width:100%;margin-top:18px}
  .aside .alt{margin-top:18px;flex-direction:column;gap:6px}
}
.more{background:var(--ink-2);border-block:1px solid var(--line);padding:56px 0}
.more h2{font-size:24px}
.more ul{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px}
.more li{list-style:none}
.more a{display:inline-block;padding:11px 18px;border:1px solid var(--line);border-radius:999px;text-decoration:none;font-weight:500;background:var(--ink)}
.more a:hover{border-color:var(--cold)}
.endcta{padding:70px 0}
footer .cols{display:grid;gap:26px}
footer h3{font:700 14px/1 var(--display);color:#fff;margin-bottom:12px}
footer ul li{list-style:none;margin-top:8px}
footer a{color:var(--muted);text-underline-offset:3px}
footer a:hover{color:#fff}
footer .legal{margin-top:28px;padding-top:20px;border-top:1px solid var(--line)}
@media (min-width:760px){footer .cols{grid-template-columns:1.3fr 1fr 1fr}}

/* Presupuesto */
.form{display:grid;grid-template-columns:minmax(0,1fr);gap:26px;max-width:640px;width:100%;min-width:0}
.form fieldset{min-width:0}
.chips{min-width:0}
.form fieldset{border:0}
.form legend,.form label.t{display:block;font:700 18px/1.3 var(--display);margin-bottom:12px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips input{position:absolute;opacity:0;pointer-events:none}
.chips label{padding:12px 18px;border:1px solid var(--line);border-radius:999px;cursor:pointer;background:var(--ink-2);font-weight:500}
.chips input:checked+label{background:var(--cold-deep);border-color:var(--cold);color:#fff}
.chips input:focus-visible+label{outline:3px solid var(--warm);outline-offset:3px}
.form input[type=text],.form textarea{width:100%;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--ink-2);color:#fff;font:inherit}
.form textarea{min-height:110px;resize:vertical}
.form .hint{color:var(--muted);font-size:15px;margin-top:8px}
.preview{border:1px solid var(--line);border-radius:18px;padding:18px;background:rgba(13,26,46,.72)}
.preview .bubble{white-space:pre-line}