/* ============ Alderston — estilos ============ */
:root{
  --bg:#070b16;
  --bg2:#0b1222;
  --panel:rgba(12,20,38,.72);
  --line:#58c7ff;
  --cyan:#6fd6ff;
  --blue:#3d7bff;
  --violet:#8b5cf6;
  --magenta:#ff3d9a;
  --text:#e9f1ff;
  --muted:#9fb0cc;
  --grad:linear-gradient(90deg,#3d6bff,#7ee3ff);
  --font-h:'Exo 2','Segoe UI',system-ui,sans-serif;
  --font-b:'Kumbh Sans','Segoe UI',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font-b);line-height:1.5;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
.wrap{width:min(1180px,92%);margin-inline:auto}
h1,h2,h3{font-family:var(--font-h);font-weight:400;line-height:1.12}
h1 b,h2 b{font-weight:700}

/* ---------- Header ---------- */
.site-header{position:fixed;inset:0 0 auto 0;z-index:50;height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(16px,3vw,40px);transition:background .3s,backdrop-filter .3s}
.site-header.scrolled{background:rgba(7,11,22,.8);backdrop-filter:blur(10px);border-bottom:1px solid rgba(88,199,255,.15)}
.menu-btn{background:none;border:0;color:var(--text);font-size:.8rem;letter-spacing:.12em;display:flex;gap:8px;align-items:center}
.menu-btn svg{width:16px;height:16px}
.logo{position:absolute;left:50%;transform:translateX(-50%);display:flex}
.logo img{height:44px;width:auto}
.lang{border:1px solid rgba(255,255,255,.7);background:transparent;color:var(--text);font-size:.72rem;letter-spacing:.06em;padding:6px 14px;border-radius:6px;transition:.25s}
.lang:hover{background:rgba(111,214,255,.15);border-color:var(--cyan)}

/* ---------- Menu overlay ---------- */
.menu-overlay{position:fixed;inset:0;z-index:60;background:rgba(5,8,18,.96);backdrop-filter:blur(8px);display:flex;flex-direction:column;justify-content:center;padding:0 8vw;opacity:0;visibility:hidden;transition:.35s}
.menu-overlay.open{opacity:1;visibility:visible}
.menu-overlay a{font-family:var(--font-h);font-size:clamp(1.6rem,4vw,2.6rem);padding:.25em 0;color:var(--muted);transition:.25s;width:max-content}
.menu-overlay a:hover{color:#fff;transform:translateX(12px);text-shadow:0 0 24px var(--cyan)}
.menu-close{position:absolute;top:18px;left:clamp(16px,3vw,40px);background:none;border:0;color:var(--text);font-size:.8rem;letter-spacing:.12em}

/* ---------- Buttons ---------- */
.btn{display:inline-block;background:var(--grad);color:#06101f;font-weight:700;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;border:0;border-radius:6px;padding:8px 16px;position:relative;overflow:hidden;transition:transform .2s,box-shadow .25s}
.btn::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.55) 50%,transparent 70%);transform:translateX(-120%);transition:transform .6s}
.btn:hover{transform:translateY(-2px);box-shadow:0 0 22px rgba(111,214,255,.55)}
.btn:hover::after{transform:translateX(120%)}
.btn.lg{font-size:.78rem;padding:10px 22px}
.btn.wide{width:100%;padding:11px}
.link-cyan{color:var(--cyan);font-size:.85rem}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:520px;display:flex;align-items:center;padding:110px 0 60px;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2;background:
  var(--img),
  radial-gradient(circle at 82% 25%,rgba(61,123,255,.55),transparent 38%),
  radial-gradient(circle at 70% 60%,rgba(139,92,246,.4),transparent 40%),
  radial-gradient(circle at 15% 80%,rgba(255,61,154,.25),transparent 35%),
  linear-gradient(180deg,#0a1230,#070b16);
  background-size:cover;background-position:center}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(7,11,22,.75) 0%,rgba(7,11,22,.15) 60%,transparent)}
.pill{display:inline-block;font-size:.7rem;letter-spacing:.05em;padding:5px 14px;border-radius:99px;background:rgba(20,32,60,.75);border:1px solid rgba(111,214,255,.25);color:var(--cyan);margin-bottom:18px}
.hero h1{font-size:clamp(2rem,4.6vw,3.3rem);max-width:640px}
.hero h1 span{color:#fff}
.hero p.lead{color:var(--text);max-width:560px;margin-top:14px;font-size:1.02rem}
.hero-nav{display:flex;flex-wrap:wrap;gap:6px 26px;margin-top:22px;font-size:.78rem;letter-spacing:.05em}
.hero-nav a,.hero-nav button{background:none;border:0;color:var(--text);font-size:inherit;letter-spacing:inherit;opacity:.9;position:relative;padding-bottom:3px}
.hero-nav a::after,.hero-nav button::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--cyan);transition:width .3s}
.hero-nav a:hover::after,.hero-nav button:hover::after{width:100%}
.hero-cta{display:flex;align-items:center;gap:22px;margin-top:26px;font-weight:600}

/* ---------- Cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:56px 0;position:relative}
.card{border:1px solid var(--line);border-radius:18px;padding:12px;background:linear-gradient(180deg,rgba(20,34,64,.55),rgba(9,15,30,.8));display:flex;flex-direction:column;position:relative;transition:transform .35s,box-shadow .35s}
.card:hover{transform:translateY(-6px);box-shadow:0 10px 40px -10px rgba(88,199,255,.45)}
.media{border-radius:10px;overflow:hidden;aspect-ratio:16/10;background:var(--img),linear-gradient(135deg,#1b2a5e,#5b2a8f 55%,#0e1a3d);background-size:cover;background-position:center;position:relative}
.media::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 40%,rgba(111,214,255,.18) 50%,transparent 60%);transform:translateX(-100%);animation:sheen 6s infinite}
@keyframes sheen{0%,70%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.card-body{padding:16px 8px 6px;display:flex;flex-direction:column;flex:1;font-size:.8rem;color:var(--text)}
.card-body .eyebrow{color:var(--cyan);font-size:.7rem;letter-spacing:.08em;margin-bottom:6px}
.card-body h3{font-size:1rem;font-weight:700;margin-bottom:10px}
.card-body p{margin-bottom:10px;color:#cfdcf3}
.card-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:10px}
.card-foot .btn{margin-left:auto}

/* ---------- Ingeniería ---------- */
.eng{position:relative;padding:70px 0 80px;overflow:hidden;background:url(img/bg-process.jpg) center bottom/100% calc(100% + 8px) no-repeat,var(--bg)}
.eyebrow-up{font-size:.72rem;letter-spacing:.1em;color:var(--cyan);text-transform:uppercase}
.eng h2{font-size:clamp(1.9rem,3.8vw,2.9rem);margin:10px 0 24px;max-width:640px}
.eng-intro{display:flex;gap:14px;max-width:520px;font-size:.78rem;color:var(--muted);margin-bottom:22px}
.eng-intro svg{flex:none;width:38px;height:38px}
.eng-list{display:grid;gap:10px;max-width:520px}
.eng-item{border:1px solid var(--line);border-radius:10px;padding:12px 16px;background:rgba(10,18,36,.7);transition:.3s;position:relative}
.eng-item:hover{transform:translateX(8px);box-shadow:0 0 24px rgba(88,199,255,.3);background:rgba(16,30,60,.85)}
.eng-item h4{font-size:.74rem;letter-spacing:.07em;color:var(--cyan);font-weight:700;margin-bottom:3px}
.eng-item p{font-size:.68rem;color:#cdd9ee}
.ring{position:absolute;right:-6%;top:10%;width:min(620px,52vw);aspect-ratio:1;z-index:-0;pointer-events:none;opacity:.95;animation:float 9s ease-in-out infinite}
.eng .wrap{position:relative;z-index:1}
@keyframes float{50%{transform:translateY(-18px)}}
.ring svg{width:100%;height:100%;overflow:visible}
.ring .spin{transform-origin:50% 50%;animation:spin 40s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Banner ---------- */
.banner{position:relative;text-align:center;padding:110px 0;overflow:hidden;isolation:isolate;border-bottom:3px solid;border-image:var(--grad) 1}
.banner-bg{position:absolute;inset:0;z-index:-2;background:var(--img),radial-gradient(circle at 20% 30%,rgba(61,123,255,.4),transparent 40%),radial-gradient(circle at 80% 70%,rgba(139,92,246,.4),transparent 40%),#0a1128;background-size:cover;background-position:center}
.banner .tag{font-size:.7rem;letter-spacing:.1em;font-weight:700;color:var(--cyan)}
.banner h2{font-size:clamp(1.8rem,4vw,2.9rem);max-width:760px;margin:14px auto 12px}
.banner p{font-size:.95rem;margin-bottom:24px}

/* ---------- Talento ---------- */
.talent{padding:80px 0 90px;background:url(img/bg-talento.jpg) center/cover,var(--bg)}
.talent h2{font-size:clamp(2rem,4vw,2.9rem);font-weight:700;margin:8px 0 10px}
.talent .sub{color:var(--muted);font-size:1.05rem;max-width:760px}
.talent-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:22px;margin-top:34px}
.panel{border:1px solid var(--line);border-radius:18px;padding:14px;background:linear-gradient(180deg,rgba(18,30,58,.6),rgba(9,15,30,.85))}
.panel .media{aspect-ratio:16/8}
.panel .txt{padding:18px 10px 6px;font-size:.8rem;color:#d4e0f4;display:grid;gap:12px}
.panel .txt strong{color:var(--cyan);font-size:.76rem;letter-spacing:.06em;font-weight:600}
.panel .txt .row{display:flex;justify-content:flex-end}
.contact{padding:22px 24px}
.contact h3{font-family:var(--font-b);font-size:1rem;font-weight:700;margin-bottom:16px}
.contact label{display:block;font-size:.58rem;color:var(--muted);margin:8px 0 3px}
.contact input,.contact textarea{width:100%;background:rgba(5,9,20,.85);border:1px solid #cfe6ff;border-radius:5px;color:#fff;padding:7px 10px;font-family:inherit;font-size:.8rem;outline:none;transition:.25s}
.contact textarea{height:96px;resize:vertical}
.contact input:focus,.contact textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(111,214,255,.18)}
.contact .btn{margin-top:14px}
.form-note{font-size:.72rem;color:var(--cyan);margin-top:10px;min-height:1em}

/* ---------- Footer ---------- */
.site-footer{display:flex;justify-content:flex-end;align-items:center;padding:34px clamp(16px,3vw,40px);background:#050810;border-top:1px solid rgba(88,199,255,.12)}
.site-footer .logo{position:static;transform:none}

/* ---------- Modal ---------- */
.modal{position:fixed;inset:0;z-index:70;display:grid;place-items:center;background:rgba(3,6,14,.72);backdrop-filter:blur(3px);opacity:0;visibility:hidden;transition:.3s;padding:20px}
.modal.open{opacity:1;visibility:visible}
.modal-box{position:relative;width:min(780px,100%);border:1px solid var(--line);border-radius:14px;padding:30px 34px;overflow:hidden;background:var(--img),radial-gradient(circle at 70% 55%,rgba(139,92,246,.7),transparent 55%),radial-gradient(circle at 30% 100%,rgba(61,123,255,.5),transparent 50%),#0a0d22;background-size:cover;background-position:center;transform:translateY(18px) scale(.97);transition:.35s;box-shadow:0 0 60px rgba(88,199,255,.25)}
.modal.open .modal-box{transform:none}
.modal-box::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(100deg,transparent 0 9px,rgba(150,200,255,.06) 9px 10px);mask-image:radial-gradient(circle at 70% 60%,#000,transparent 70%);-webkit-mask-image:radial-gradient(circle at 70% 60%,#000,transparent 70%);pointer-events:none}
.modal-box>*{position:relative}
.modal h3{font-family:var(--font-b);font-size:.72rem;letter-spacing:.1em;color:var(--cyan);margin-bottom:18px;font-weight:600}
.modal-x{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;border:1.5px solid #fff;background:rgba(10,15,40,.6);color:#fff;font-size:1rem;display:grid;place-items:center;transition:.25s}
.modal-x:hover{background:var(--cyan);color:#06101f;transform:rotate(90deg)}
.model-row{display:grid;grid-template-columns:150px 1fr;gap:0;align-items:center;margin-bottom:16px}
.model-row b{font-size:.85rem;font-weight:600;padding-right:16px;border-right:2px solid #fff;line-height:1.25;display:block}
.model-row span{font-size:.7rem;padding-left:14px;color:#eaf1ff}

/* ---------- Agentic page ---------- */
.hero.agentic{min-height:340px}
.hero.agentic h1 b{display:inline}
.hero.agentic .lead{max-width:420px;font-size:.88rem}
.levels{position:relative;padding:36px 0 40px;border-bottom:2px solid;border-image:var(--grad) 1;background:#070b16}
.carousel{display:flex;align-items:flex-start;gap:12px}
.car-btn{flex:none;width:30px;height:30px;border-radius:50%;border:1px solid var(--cyan);background:transparent;color:var(--cyan);font-size:1rem;transition:.25s;align-self:center}
.car-btn:hover{background:var(--cyan);color:#06101f;box-shadow:0 0 16px var(--cyan)}
.track{display:flex;gap:30px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;flex:1;padding:4px}
.track::-webkit-scrollbar{display:none}
.lvl{flex:0 0 calc((100% - 90px) / 3.4);scroll-snap-align:start;font-size:.7rem;color:#cfdcf3}
.lvl .media{aspect-ratio:16/9;border-radius:4px;margin-bottom:16px}
.lvl h4{color:var(--cyan);font-size:.68rem;letter-spacing:.08em;margin-bottom:6px}
.process{position:relative;padding:80px 0 90px;overflow:hidden;background:url(img/bg-process.jpg) center/cover,var(--bg)}
.process .digits{position:absolute;inset:0;opacity:.07;font:12px/1.9 monospace;color:#6fd6ff;overflow:hidden;word-break:break-all;pointer-events:none;user-select:none}
.process h2{font-size:clamp(1.8rem,3.6vw,2.6rem);margin:8px 0 34px}
.steps{display:grid;grid-template-columns:repeat(2,minmax(0,300px));gap:14px 14px;justify-content:center;position:relative}
.step{border:1px solid var(--line);border-radius:12px;padding:12px 16px;background:rgba(8,16,34,.85);transition:.3s;position:relative}
.step:hover{transform:translateY(-4px);box-shadow:0 0 28px rgba(88,199,255,.35)}
.step h4{font-size:.92rem;font-weight:500;letter-spacing:.02em;margin-bottom:4px}
.step h4 em{font-style:normal;color:var(--blue);font-size:1.05rem;font-weight:600;margin-right:4px}
.step p{font-size:.58rem;color:#c8d6ee;font-style:italic}
.poss{padding:60px 0 50px;background:#09101f;text-align:center;border-block:1px solid rgba(88,199,255,.18)}
.poss .eyebrow-up{font-size:.62rem;font-weight:700}
.poss h2{font-size:clamp(1.2rem,2.2vw,1.55rem);margin:14px 0 38px}
.timeline{position:relative}
.timeline .line{position:absolute;left:0;right:0;top:11px;height:1.5px;background:linear-gradient(90deg,#fff,var(--cyan),#fff);opacity:.9}
.timeline .track{gap:0;padding-top:0}
.pos{flex:0 0 calc(100% / 3.4);scroll-snap-align:start;text-align:left;padding-right:22px;position:relative;font-size:.64rem;color:#cdd9ee}
.pos .dot{width:22px;height:22px;border-radius:50%;border:1.5px solid #cfe6ff;background:var(--bg);display:grid;place-items:center;margin-bottom:12px;position:relative;z-index:1;transition:.3s}
.pos:hover .dot{background:var(--cyan);box-shadow:0 0 18px var(--cyan)}
.pos:first-child .dot::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan);animation:pulse 2s infinite}
@keyframes pulse{50%{transform:scale(1.7);opacity:.4}}
.pos h4{font-size:.74rem;letter-spacing:.05em;font-weight:700;color:#fff;margin-bottom:8px}
.timeline .carousel{align-items:flex-start}
.timeline .car-btn{margin-top:0;align-self:flex-start}
.cta{position:relative;padding:90px 0 80px;overflow:hidden;background:url(img/bg-cta.jpg) center/cover,#070b16}
.cta .eyebrow-up{font-size:.68rem;text-transform:none;letter-spacing:.02em}
.cta h2{font-size:clamp(2rem,4.4vw,3.3rem);max-width:600px;margin:20px 0 24px;font-weight:700}
.cta h2 span{font-weight:400}
.cta p{font-size:.82rem;color:var(--muted);max-width:420px}
.cta .btn{position:absolute;right:8%;bottom:70px}
.cta .wrap{position:relative;z-index:2}
.wave-art{position:absolute;inset:0;z-index:1;pointer-events:none;background:url(img/cta-wave.png) center/cover no-repeat;transform-origin:78% 52%}
.wave-art.a{animation:waveA 16s ease-in-out infinite alternate}
.wave-art.b{opacity:.45;filter:hue-rotate(55deg) blur(1px);animation:waveB 22s ease-in-out infinite alternate}
@keyframes waveA{0%{transform:translate3d(0,0,0) rotate(0) scale(1)}50%{transform:translate3d(-14px,-18px,0) rotate(-1.2deg) scale(1.03)}100%{transform:translate3d(10px,14px,0) rotate(1deg) scale(1.01)}}
@keyframes waveB{0%{transform:translate3d(14px,10px,0) rotate(1.4deg) scale(1.02)}100%{transform:translate3d(-18px,-12px,0) rotate(-1.6deg) scale(1.05)}}

.card,.panel,.step,.eng-item{transform-style:preserve-3d;will-change:transform}
.panel{position:relative}

/* ---------- Reveal ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.12s}.rv.d2{transition-delay:.24s}.rv.d3{transition-delay:.36s}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .logo img{height:34px}
  .lvl,.pos{flex-basis:72%}
  .cards{grid-template-columns:1fr}
  .talent-grid{grid-template-columns:1fr}
  .ring{opacity:.28;right:-30%}
  .steps{grid-template-columns:1fr}
  .cta .btn{position:static;margin-top:26px}
  .model-row{grid-template-columns:110px 1fr}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}}