:root{color-scheme:dark;--bg:#000;--surface:#1d1d1f;--surface2:#2a2a2d;--text:#f5f5f7;--muted:#86868b;--line:rgba(255,255,255,.14);--accent:#2997ff;--accent-fill:#0071e3;--wa:#25d366;--wa-hover:#1fbd5a;--glass:rgba(22,22,23,.72);--shadow:0 20px 40px rgba(0,0,0,.5);--radius:24px;--ease:cubic-bezier(.25,.1,.25,1);--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Roboto,Helvetica,Arial,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:12px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
nav{position:fixed;top:0;left:0;right:0;z-index:50;height:68px;background:var(--glass);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line)}
nav .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo img{height:48px;display:block;filter:invert(1)}
.links{display:flex;gap:28px;font-size:13px;color:var(--muted)}.links a:hover{color:var(--text)}
.links a,.btn,.nav-wa{transition:all .3s var(--ease)}
.nav-wa,.btn-wa{display:inline-flex;align-items:center;gap:8px;background:var(--wa);color:#fff;font-weight:600}
.nav-wa{font-size:13px;padding:7px 14px;border-radius:980px}.nav-wa:hover,.btn-wa:hover{background:var(--wa-hover)}
.nav-wa svg,.btn-wa svg{width:18px;height:18px;fill:#fff}
.btn{display:inline-flex;font-size:17px;font-weight:500;padding:13px 26px;border-radius:980px}
.btn-wa:hover{transform:scale(1.03)}
.btn-ghost{color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--accent)}.btn-ghost:hover{background:var(--accent);color:#fff}
/* Foto + movimiento: la imagen respira lento solo cuando está a la vista */
.ph{position:absolute;inset:0;overflow:hidden}
.ph img,.ph video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ph.on img{animation:kb 22s ease-in-out infinite alternate}
@keyframes kb{from{transform:scale(1.02)}to{transform:scale(1.12) translate(-1.5%,-1%)}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* ---- Extras compartidos (tema negro) ---- */
.back{font-size:14px;color:var(--accent);transition:all .3s var(--ease)}.back:hover{opacity:.7}
.nav-r{display:flex;align-items:center;gap:10px}
/* Botón 3D "pulsable" hacia Requisitos de impresión */
.btn-3d{position:relative;display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#fff;padding:7px 14px;border-radius:980px;background:linear-gradient(180deg,#4aa8ff,#0071e3);box-shadow:0 4px 0 #004a99,0 8px 18px rgba(41,151,255,.35);transform:translateY(0);transition:transform .15s var(--ease),box-shadow .15s var(--ease);overflow:hidden;white-space:nowrap}
.btn-3d::after{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);transform:skewX(-20deg);animation:shine 3.2s ease-in-out infinite}
@keyframes shine{0%,60%{left:-60%}100%{left:130%}}
.btn-3d:hover{transform:translateY(-2px);box-shadow:0 6px 0 #004a99,0 12px 22px rgba(41,151,255,.45)}
.btn-3d:active{transform:translateY(4px);box-shadow:0 0 0 #004a99,0 2px 6px rgba(41,151,255,.3)}
.btn-3d svg{width:16px;height:16px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-3d.big{font-size:17px;padding:13px 26px}
/* Iconos de servicio */
.svc{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.svc>*{display:block;padding:26px 22px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}
.svc .ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:rgba(41,151,255,.14);margin-bottom:16px}
.svc svg{width:26px;height:26px;fill:none;stroke:var(--accent);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.svc strong{display:block;font-size:17px;font-weight:600;letter-spacing:-.01em}.svc span{display:block;margin-top:4px;font-size:14px;color:var(--muted)}
/* Por qué Arte3 */
.why{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:center}
.why h2{font-size:clamp(32px,5vw,56px);font-weight:700;letter-spacing:-.03em;line-height:1.08}
.why .lead2{margin-top:18px;color:var(--muted);font-size:clamp(17px,2vw,20px)}
.why ul{list-style:none;margin-top:26px;display:grid;gap:14px}
.why li{display:flex;gap:12px;align-items:flex-start;font-size:17px}
.why li::before{content:"";flex:none;width:22px;height:22px;margin-top:2px;border-radius:50%;background:var(--accent-fill) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.500l4 4 8-9'/%3E%3C/svg%3E") center/14px no-repeat}
.proj{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.proj figure{position:relative;aspect-ratio:1/1;border-radius:20px;overflow:hidden;background:var(--surface2)}
.proj figure:nth-child(2){transform:translateY(24px)}.proj figure:nth-child(4){transform:translateY(24px)}
.proj figcaption{position:absolute;z-index:2;left:0;right:0;bottom:0;padding:34px 16px 14px;font-size:14px;font-weight:600;background:linear-gradient(0deg,rgba(0,0,0,.75),transparent)}
.proj .ph.on img{animation-duration:30s}
/* Opiniones */
.stars{color:#ffcc00;letter-spacing:3px;font-size:22px}
.rev-head{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.rev-head strong{font-size:44px;font-weight:700;letter-spacing:-.03em}
.revs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rev{padding:26px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}
.rev p{margin:12px 0 16px;font-size:16px}.rev b{font-size:14px;font-weight:600}
@media (max-width:1000px){.svc{grid-template-columns:repeat(2,1fr)}}
@media (max-width:900px){.why{grid-template-columns:1fr}.revs{grid-template-columns:1fr}}
@media (max-width:640px){.btn-3d .t{display:none}.btn-3d{padding:8px 11px}.nav-wa .t{display:none}.svc{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.btn-3d::after{display:none}}
/* Formularios y páginas de contenido */
.page{padding:110px 0 80px}.page h1{font-size:clamp(36px,6vw,64px);font-weight:700;letter-spacing:-.035em;line-height:1.05}
.page .sub{margin-top:14px;color:var(--muted);font-size:clamp(17px,2vw,21px);max-width:640px}
.field{display:grid;gap:8px;margin-top:22px}.field label{font-size:15px;font-weight:600}
.field input,.field textarea{width:100%;padding:14px 16px;border-radius:14px;border:1.5px solid var(--line);background:var(--surface);color:var(--text);font:inherit;font-size:17px}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent)}.field small{color:var(--muted);font-size:13px}

/* Botones de opciones y avisos (compartidos) */
.opts{display:flex;flex-wrap:wrap;gap:10px}.opts input{position:absolute;opacity:0;pointer-events:none}
.opts label{display:inline-block;padding:11px 20px;border-radius:980px;border:1.5px solid var(--line);font-size:15px;cursor:pointer;background:var(--surface);transition:all .3s var(--ease)}
.opts label:hover{border-color:var(--accent)}.opts input:checked+label{background:var(--accent-fill);border-color:var(--accent-fill);color:#fff}
.opts input:focus-visible+label{outline:3px solid var(--accent);outline-offset:3px}
.callouts{margin-top:20px;display:grid;gap:8px}.callout{padding:11px 16px;border-radius:14px;background:rgba(41,151,255,.1);border-left:3px solid var(--accent);font-size:14px;line-height:1.45}
.callout.warn{background:rgba(255,159,10,.12);border-left-color:#ff9f0a}
/* Marcas aliadas */
.mq{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.mq-t{display:flex;gap:64px;width:max-content;animation:mq 34s linear infinite;align-items:center;padding:8px 0}
.mq:hover .mq-t{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}
.pt{display:flex;align-items:center;height:48px;white-space:nowrap}
.pt img{height:40px;width:auto;max-width:150px;object-fit:contain;filter:grayscale(1) brightness(1.7)}.pt img+b{display:none}
.pt b{font-size:26px;font-weight:700;letter-spacing:-.03em;color:var(--muted)}
@media (prefers-reduced-motion:reduce){.mq-t{animation:none;flex-wrap:wrap;width:auto;justify-content:center}}
.svc a.lk{transition:all .3s var(--ease)}.svc a.lk:hover{border-color:var(--accent);transform:translateY(-4px)}
.qr{display:flex;align-items:center;gap:14px;justify-content:center;margin-top:28px;color:var(--muted);font-size:14px}.qr img{width:84px;height:84px;border-radius:12px;background:#fff;padding:6px}

.ft-logo img{height:60px;width:auto;display:block;filter:invert(1)}
footer .wrap{align-items:center}
.nav-up{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text);padding:7px 14px;border-radius:980px;border:1.5px solid var(--line);background:rgba(255,255,255,.06);white-space:nowrap;transition:all .3s var(--ease)}
.nav-up:hover{border-color:var(--accent);background:rgba(41,151,255,.14)}
.nav-up svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
@media (max-width:1100px){.links{display:none}}
@media (max-width:640px){.nav-up .t{display:none}.nav-up{padding:8px 11px}}
.links a,.nav-wa,.btn-3d{white-space:nowrap}.links{gap:20px}.nav-r{gap:8px}.t-s{display:none}
@media (max-width:1320px){.t-l{display:none}.t-s{display:inline}.links{gap:16px}}