/* ============================================================
   DISTRINAR OZONO — Portada (rediseño 2026)
   Profundidad de agua + materiales del filtro + acento ozono.
   ============================================================ */
:root{
  --abyss:#03101a;
  --deep:#062236;
  --ocean:#0a3a5c;
  --blue:#0671b2;
  --cyan:#11a5d6;
  --aqua:#7fe3f5;
  --ozone:#2ef2c0;
  --sand:#efe0bd;
  --paper:#f4f8fa;
  --paper-2:#e8f1f5;
  --ink:#0b2232;
  --ink-soft:#4b6475;
  --line:rgba(11,34,50,.1);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.14);

  --grad-brand:linear-gradient(120deg,#0671b2 0%,#11a5d6 55%,#2ef2c0 120%);
  --f-display:'Sora',system-ui,sans-serif;
  --f-body:'Inter',system-ui,sans-serif;
  --f-mono:'Space Grotesk','Sora',system-ui,sans-serif;   /* etiquetas, números y datos */

  --r-s:12px; --r-m:20px; --r-l:30px;
  --ease:cubic-bezier(.22,1,.36,1);
  --shadow:0 30px 60px -30px rgba(3,16,26,.45);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--f-body);color:#d8e9f2;background:var(--abyss);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{font-family:var(--f-display);line-height:1.08;letter-spacing:-.025em;font-weight:700}
h2{font-size:clamp(2rem,4.2vw,3.3rem)}
h3{font-size:1.2rem;letter-spacing:-.01em}
::selection{background:var(--ozone);color:var(--abyss)}
:focus-visible{outline:2px solid var(--ozone);outline-offset:3px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:fixed;left:16px;top:-60px;z-index:200;background:var(--ozone);color:var(--abyss);padding:10px 16px;border-radius:10px;font-weight:600}
.skip-link:focus{top:16px}

.container{width:min(1200px,100% - 32px);margin-inline:auto}
.eyebrow{font-family:var(--f-mono);font-size:.74rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);display:inline-flex;align-items:center;gap:10px;margin-bottom:18px}
.eyebrow::before{content:"";width:22px;height:1.5px;background:currentColor;opacity:.7}
.lead{font-size:clamp(1.02rem,1.3vw,1.15rem);max-width:60ch;color:inherit;opacity:.82}

/* ---------- botones ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 26px;border-radius:999px;font-weight:600;font-size:.95rem;transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .3s;white-space:nowrap}
.btn svg{width:18px;height:18px;transition:transform .35s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--grad-brand);background-size:160% 100%;color:#fff;box-shadow:0 14px 30px -14px rgba(17,165,214,.8),inset 0 1px 0 rgba(255,255,255,.35)}
.btn-primary:hover{transform:translateY(-3px);background-position:100% 0;box-shadow:0 20px 40px -14px rgba(46,242,192,.6),inset 0 1px 0 rgba(255,255,255,.35)}
.btn-ghost{border:1.5px solid var(--glass-line);background:var(--glass);backdrop-filter:blur(10px);color:#fff}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--ozone)}
.btn-sm{padding:10px 18px;font-size:.86rem}
.btn-block{width:100%}

/* ---------- header ---------- */
.site-header{position:fixed;inset:0 0 auto;z-index:100;padding:18px 0;transition:padding .4s var(--ease),background .4s,border-color .4s;border-bottom:1px solid transparent}
.site-header.scrolled{padding:10px 0;background:rgba(3,16,26,.62);backdrop-filter:blur(18px) saturate(1.4);border-color:rgba(255,255,255,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{width:40px;height:40px;object-fit:contain;filter:drop-shadow(0 6px 14px rgba(17,165,214,.45))}
.brand-word{font-family:var(--f-display);font-weight:800;color:#fff;font-size:1.05rem;letter-spacing:.01em;line-height:1}
.brand-word span{display:block;font-family:var(--f-mono);font-size:.56rem;font-weight:600;letter-spacing:.42em;color:var(--ozone);margin-top:3px}
.nav-links{display:flex;gap:6px;padding:6px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(12px)}
.nav-links a{padding:8px 16px;border-radius:999px;font-size:.88rem;font-weight:500;color:#cfe3ee;transition:background .3s,color .3s}
.nav-links a:hover{background:rgba(255,255,255,.1);color:#fff}
.header-cta{display:flex;align-items:center;gap:10px}
.admin-link{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;border:1px solid rgba(255,255,255,.16);color:#cfe3ee;transition:border-color .3s,color .3s}
.admin-link:hover{border-color:var(--ozone);color:var(--ozone)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.16);position:relative}
.nav-toggle span{position:absolute;left:12px;right:12px;height:1.5px;background:#fff;transition:transform .35s var(--ease)}
.nav-toggle span:first-child{top:16px}.nav-toggle span:last-child{top:24px}
.nav-open .nav-toggle span:first-child{transform:translateY(4px) rotate(45deg)}
.nav-open .nav-toggle span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ============================================================
   ANATOMÍA DE UN FILTRO
   ============================================================ */
.filter-intro{--bg:#041420;--p:0;position:relative;height:720vh;background:var(--bg);color:#fff}
.fi-sticky{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;
  background:
    radial-gradient(70% 60% at 72% 38%, color-mix(in oklab, var(--cyan) 22%, transparent), transparent 70%),
    radial-gradient(60% 50% at 15% 90%, color-mix(in oklab, var(--ozone) 9%, transparent), transparent 70%),
    linear-gradient(180deg, color-mix(in oklab, var(--bg) 70%, #000) 0%, var(--bg) 60%, color-mix(in oklab, var(--bg) 80%, #0a3a5c) 100%);
}
#filterCanvas{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:1}
.fi-caustics{position:absolute;inset:-20%;z-index:0;opacity:.22;mix-blend-mode:screen;pointer-events:none;
  background:
    radial-gradient(closest-side,rgba(127,227,245,.55),transparent) 10% 20%/38% 30% no-repeat,
    radial-gradient(closest-side,rgba(46,242,192,.35),transparent) 80% 70%/30% 26% no-repeat,
    radial-gradient(closest-side,rgba(17,165,214,.5),transparent) 60% 10%/44% 34% no-repeat;
  animation:caustic 18s ease-in-out infinite alternate;filter:blur(30px)}
@keyframes caustic{to{transform:translate3d(4%,-3%,0) rotate(8deg) scale(1.08)}}
.fi-grain{position:absolute;inset:0;z-index:3;pointer-events:none;opacity:.09;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}

.fi-title{position:absolute;z-index:4;left:max(16px,calc((100vw - 1200px)/2));bottom:clamp(40px,10vh,110px);max-width:min(640px,92vw);transition:opacity .6s var(--ease),transform .8s var(--ease)}
.filter-intro:not(.is-intro).ready .fi-title{opacity:0;transform:translateY(-40px);pointer-events:none}
.fi-eyebrow{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);display:flex;align-items:center;gap:10px;margin-bottom:18px}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--ozone);box-shadow:0 0 0 0 rgba(46,242,192,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 12px rgba(46,242,192,0)}100%{box-shadow:0 0 0 0 rgba(46,242,192,0)}}
.fi-title h1{font-size:clamp(3rem,8.4vw,7.4rem);font-weight:800;letter-spacing:-.045em;line-height:.92;margin-bottom:22px;text-shadow:0 20px 60px rgba(0,0,0,.35)}
.fi-title h1 em,.fi-final h2 em,.hero-title em{font-style:normal;background:linear-gradient(100deg,#7fe3f5 0%,#2ef2c0 60%,#c9fff0 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.fi-sub{font-size:clamp(1rem,1.3vw,1.12rem);color:#c3dce8;max-width:46ch;margin-bottom:28px}
.fi-cue{display:flex;align-items:center;gap:12px;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:#9fc3d4}
.mouse{width:22px;height:34px;border:1.5px solid rgba(255,255,255,.5);border-radius:12px;position:relative}
.mouse span{position:absolute;left:50%;top:7px;width:3px;height:7px;margin-left:-1.5px;border-radius:2px;background:var(--ozone);animation:wheel 1.8s var(--ease) infinite}
@keyframes wheel{0%{opacity:0;transform:translateY(-3px)}30%{opacity:1}100%{opacity:0;transform:translateY(10px)}}

/* tarjeta de capa */
.fi-card{--accent:var(--cyan);position:absolute;z-index:5;left:max(16px,calc((100vw - 1200px)/2));top:50%;width:min(420px,40vw);transform:translateY(-44%);opacity:0;pointer-events:none;
  padding:30px 30px 26px;border-radius:var(--r-l);background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(18px) saturate(1.3);box-shadow:0 40px 80px -40px rgba(0,0,0,.7)}
.fi-card::before{content:"";position:absolute;left:30px;right:30px;top:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),transparent)}
.fi-card.show{animation:cardIn .7s var(--ease) forwards}
@keyframes cardIn{from{opacity:0;transform:translate(-18px,-44%)}to{opacity:1;transform:translate(0,-50%)}}
.fi-card header{display:flex;align-items:baseline;gap:6px;margin-bottom:14px;font-family:var(--f-mono)}
.fi-num{font-size:2.6rem;font-weight:600;color:var(--accent);line-height:1;letter-spacing:-.04em}
.fi-total{font-size:.8rem;color:#8fb1c2}
.fi-role{margin-left:auto;font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);border:1px solid color-mix(in oklab,var(--accent) 45%,transparent);padding:5px 10px;border-radius:999px}
.fi-name{font-size:clamp(1.9rem,3vw,2.6rem);margin-bottom:12px}
.fi-desc{color:#cfe1ea;font-size:1rem;margin-bottom:20px}
.fi-specs{display:grid;grid-template-columns:1fr 1fr;gap:14px;border-top:1px solid rgba(255,255,255,.12);padding-top:16px}
.fi-specs dt{font-family:var(--f-mono);font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:#8fb1c2;margin-bottom:4px}
.fi-specs dd{font-size:.88rem;color:#fff;font-weight:500}

/* etiquetas sobre las capas */
.fi-tags{position:absolute;inset:0;z-index:4;pointer-events:none;opacity:0}
.fi-tag{position:absolute;left:0;top:0;display:flex;align-items:center;gap:0;pointer-events:auto;will-change:transform;margin-top:-10px;color:#d6e8f1}
.fi-tag-dot{width:9px;height:9px;border-radius:50%;background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.12);flex:none;transition:background .3s,box-shadow .3s}
.fi-tag-line{width:46px;height:1px;background:linear-gradient(90deg,rgba(255,255,255,.7),rgba(255,255,255,.15));transition:width .5s var(--ease)}
.fi-tag-txt{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.06em;white-space:nowrap;padding:6px 12px;border-radius:999px;background:rgba(3,16,26,.45);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(8px);transition:background .3s,color .3s,border-color .3s}
.fi-tag-txt b{color:var(--aqua);font-weight:600;margin-right:4px}
.fi-tag:hover .fi-tag-txt,.fi-tag.on .fi-tag-txt{background:#fff;color:var(--abyss);border-color:#fff}
.fi-tag.on .fi-tag-dot{background:var(--ozone);box-shadow:0 0 0 6px rgba(46,242,192,.25)}
.fi-tag.on .fi-tag-line{width:70px}

/* riel de navegación */
.fi-rail{position:absolute;z-index:6;right:max(16px,calc((100vw - 1200px)/2));top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:14px;opacity:calc(var(--p) * 12);transition:opacity .4s}
.fi-rail-dot{width:12px;height:12px;border-radius:50%;border:1.5px solid rgba(255,255,255,.45);position:relative;transition:background .3s,border-color .3s,transform .3s var(--ease)}
.fi-rail-dot span{position:absolute;right:22px;top:50%;transform:translate(6px,-50%);white-space:nowrap;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.06em;color:#cfe3ee;opacity:0;transition:opacity .3s,transform .3s var(--ease);pointer-events:none}
.fi-rail-dot:hover span{opacity:1;transform:translate(0,-50%)}
.fi-rail-dot.on{background:var(--ozone);border-color:var(--ozone);transform:scale(1.25)}

/* cierre: ozono */
.fi-final{position:absolute;z-index:5;inset:auto 16px 14vh;text-align:center;max-width:720px;margin-inline:auto;opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease);pointer-events:none}
.fi-final .fi-eyebrow{justify-content:center}
.fi-final h2{font-size:clamp(2.6rem,6vw,5.4rem);font-weight:800;letter-spacing:-.04em;margin-bottom:16px}
.fi-final p{color:#d3ecf5;font-size:1.08rem;max-width:52ch;margin-inline:auto}
.filter-intro.is-final .fi-final{opacity:1;transform:none}

.fi-skip{position:absolute;z-index:6;right:max(16px,calc((100vw - 1200px)/2));bottom:24px;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;color:#9fc3d4;padding:8px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:rgba(3,16,26,.35);backdrop-filter:blur(8px);transition:color .3s,border-color .3s}
.fi-skip:hover{color:#fff;border-color:var(--ozone)}

.fi-data{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* sin WebGL: la lista se muestra como tarjetas */
.no-webgl .filter-intro{height:auto}
.no-webgl .fi-sticky{position:relative;height:auto;min-height:92vh;padding:140px 0 60px}
.no-webgl #filterCanvas,.no-webgl .fi-card,.no-webgl .fi-tags,.no-webgl .fi-rail,.no-webgl .fi-final,.no-webgl .fi-skip,.no-webgl .fi-cue{display:none}
.no-webgl .fi-title{position:relative;left:auto;bottom:auto;margin:0 auto;width:min(1200px,100% - 32px);max-width:none}
.no-webgl .fi-data{position:relative;width:min(1200px,100% - 32px);height:auto;clip:auto;overflow:visible;margin:0 auto 80px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;counter-reset:l}
.no-webgl .fi-data li{padding:22px;border-radius:var(--r-m);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);counter-increment:l}
.no-webgl .fi-data li::before{content:"0" counter(l);font-family:var(--f-mono);color:var(--ozone);font-size:.8rem}
.no-webgl .fi-data h3{margin:6px 0 8px}
.no-webgl .fi-data p{font-size:.92rem;color:#c3dce8}

/* ============================================================
   HÉROE
   ============================================================ */
.hero{position:relative;padding:120px 0 120px;background:linear-gradient(180deg,#04314a 0%,#052a40 40%,var(--deep) 100%);overflow:hidden}
.hero-glow{position:absolute;inset:-30% -10% auto auto;width:70vw;height:70vw;background:radial-gradient(closest-side,rgba(46,242,192,.18),transparent);filter:blur(20px);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(30px,5vw,80px);align-items:end}
.hero-title{font-size:clamp(2.3rem,4.8vw,4.2rem);font-weight:800;letter-spacing:-.04em;color:#fff;margin-bottom:22px}
.hero .lead{color:#cfe3ee;margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat{padding:24px 22px;border-radius:var(--r-m);background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(10px)}
.stat strong{display:block;font-family:var(--f-display);font-size:clamp(2.2rem,3.6vw,3rem);font-weight:800;letter-spacing:-.04em;color:#fff;line-height:1;margin-bottom:8px}
.stat span{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:#9fc3d4}
.stat:nth-child(2) strong{color:var(--aqua)}
.stat:nth-child(3) strong{color:var(--ozone)}

/* efecto 3D de inclinación */
.tilt{transform-style:preserve-3d;transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.tilt.tilting{transition:transform .08s linear}

/* ============================================================
   SECCIONES
   ============================================================ */
.section{position:relative;padding:clamp(80px,11vw,140px) 0}
.section--tight{padding:clamp(60px,7vw,90px) 0}
.section--light{background:var(--paper);color:var(--ink)}
.section--light .eyebrow{color:var(--blue)}
.section--light .lead{color:var(--ink-soft);opacity:1}
.section--deep{background:radial-gradient(80% 60% at 20% 30%,rgba(17,165,214,.16),transparent 70%),var(--deep);color:#d8e9f2}
.section--deep h2{color:#fff}
.section-head{max-width:720px;margin-bottom:56px}
.section-head h2{margin-bottom:18px}
.section-head.split{max-width:none;display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:end}

/* pilares */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pillar{position:relative;padding:34px 30px 32px;border-radius:var(--r-l);background:#fff;border:1px solid var(--line);box-shadow:0 1px 0 rgba(255,255,255,.8) inset,0 24px 50px -36px rgba(6,34,54,.45);overflow:hidden;isolation:isolate}
.pillar::after{content:"";position:absolute;inset:auto -30% -60% auto;width:240px;height:240px;border-radius:50%;background:radial-gradient(closest-side,color-mix(in oklab,var(--c2) 35%,transparent),transparent);z-index:-1;transition:transform .7s var(--ease)}
.pillar:hover::after{transform:translate(-30px,-40px) scale(1.2)}
.pillar-num{position:absolute;top:26px;right:28px;font-family:var(--f-mono);font-size:.78rem;color:#9ab0bd}
.pillar-icon{width:58px;height:58px;border-radius:18px;display:grid;place-items:center;color:#fff;margin-bottom:26px;background:linear-gradient(140deg,var(--c1),var(--c2));box-shadow:0 14px 26px -12px var(--c1),inset 0 1px 0 rgba(255,255,255,.4);transform:translateZ(30px)}
.pillar-icon svg{width:26px;height:26px}
.pillar h3{font-size:1.4rem;margin-bottom:10px;transform:translateZ(20px)}
.pillar p{color:var(--ink-soft);font-size:.97rem}

/* ciencia */
.science-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(40px,6vw,90px);align-items:center}
.o3-stage{--rx:-12deg;--ry:20deg;position:relative;aspect-ratio:1;display:grid;place-items:center;perspective:900px}
.o3-rings{position:absolute;inset:6%}
.o3-rings span{position:absolute;inset:0;border-radius:50%;border:1px solid rgba(127,227,245,.25);animation:ring 6s linear infinite}
.o3-rings span:nth-child(2){inset:12%;animation-delay:-2s;border-color:rgba(46,242,192,.25)}
.o3-rings span:nth-child(3){inset:24%;animation-delay:-4s}
@keyframes ring{from{transform:rotateX(70deg) rotateZ(0)}to{transform:rotateX(70deg) rotateZ(360deg)}}
.o3{position:relative;width:62%;aspect-ratio:1;transform-style:preserve-3d;transform:rotateX(var(--rx)) rotateY(var(--ry));transition:transform .25s ease-out}
.atom{position:absolute;border-radius:50%;display:grid;place-items:center;transform-style:preserve-3d}
.atom i{font-style:normal;font-family:var(--f-display);font-weight:700;color:rgba(255,255,255,.9);font-size:clamp(1rem,2vw,1.5rem);text-shadow:0 2px 6px rgba(0,0,0,.3)}
.a1{width:40%;height:40%;left:30%;top:14%;transform:translateZ(0);background:radial-gradient(circle at 32% 28%,#d9fbff 0%,#4fd3f2 22%,#0671b2 62%,#03233a 100%);box-shadow:0 30px 50px -20px rgba(6,113,178,.8),inset -8px -12px 24px rgba(0,0,0,.35)}
.a2{width:34%;height:34%;left:2%;top:56%;transform:translateZ(-40px);background:radial-gradient(circle at 32% 28%,#eafffa 0%,#5ff5cf 24%,#0fb492 60%,#033a2e 100%);box-shadow:0 26px 44px -20px rgba(46,242,192,.7),inset -8px -12px 22px rgba(0,0,0,.35)}
.a3{width:34%;height:34%;right:2%;top:56%;transform:translateZ(40px);background:radial-gradient(circle at 32% 28%,#e3f7ff 0%,#6fd6ff 24%,#11a5d6 60%,#06324a 100%);box-shadow:0 26px 44px -20px rgba(17,165,214,.75),inset -8px -12px 22px rgba(0,0,0,.35)}
.bond{position:absolute;height:7%;border-radius:999px;background:linear-gradient(180deg,#e8f6fb,#7aa3b8);left:50%;top:50%;transform-origin:0 50%}
.b1{width:34%;transform:translate(-10%,-60%) rotate(128deg) translateZ(-20px)}
.b2{width:34%;transform:translate(-10%,-60%) rotate(52deg) translateZ(20px)}
.o3-label{position:absolute;bottom:4%;font-family:var(--f-mono);font-size:.74rem;letter-spacing:.2em;color:var(--aqua)}
.o3-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:34px 0 28px}
.o3-steps li{padding:18px;border-radius:var(--r-m);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1)}
.o3-steps b{font-family:var(--f-mono);color:var(--ozone);font-size:.8rem}
.o3-steps h3{color:#fff;font-size:1.05rem;margin:8px 0 6px}
.o3-steps p{font-size:.88rem;color:#b9d3e0}
.check-list{display:grid;gap:10px}
.check-list li{position:relative;padding-left:30px;color:#d8e9f2}
.check-list li::before{content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;background:var(--ozone) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2303101a' stroke-width='3.2'><path d='M5 12l5 5L19 7'/></svg>") center/12px no-repeat}

/* productos */
.tabs-wrap{position:relative;margin-bottom:30px}
.tabs-wrap::-webkit-scrollbar{display:none}
.tabs-bar{display:flex;flex-wrap:wrap;gap:10px}
.tab-btn{padding:11px 14px 11px 18px;border-radius:999px;font-size:.9rem;font-weight:600;color:var(--ink-soft);white-space:nowrap;display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 20px -16px rgba(6,34,54,.4);transition:background .3s,color .3s,border-color .3s,transform .3s var(--ease),box-shadow .3s}
.tab-btn:hover{color:var(--ink);border-color:rgba(6,113,178,.35);transform:translateY(-2px);box-shadow:0 14px 26px -18px rgba(6,34,54,.5)}
.tab-btn.active{background:var(--ink);border-color:var(--ink);color:#fff;box-shadow:0 14px 30px -14px rgba(11,34,50,.55)}
.tab-btn .count{font-family:var(--f-mono);font-size:.72rem;font-weight:600;min-width:24px;height:24px;display:inline-grid;place-items:center;padding:0 7px;border-radius:999px;background:var(--paper-2);color:var(--blue)}
.tab-btn.active .count{background:var(--ozone);color:var(--abyss)}
.tab-panel{display:none}
.tab-panel.active{display:block;animation:fadeUp .6s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.category-intro{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:center;padding:18px;border-radius:var(--r-l);background:#fff;border:1px solid var(--line);margin-bottom:24px}
.category-intro .photo{aspect-ratio:4/3;border-radius:var(--r-m);overflow:hidden;background:var(--paper-2)}
.category-intro .photo img{width:100%;height:100%;object-fit:cover}
.category-intro h3{font-size:1.7rem;margin-bottom:8px;color:var(--ink)}
.category-intro p{color:var(--ink-soft)}
.category-intro .eyebrow{margin-bottom:10px}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.product-card{position:relative;border-radius:var(--r-l);background:#fff;border:1px solid var(--line);overflow:hidden;cursor:pointer;box-shadow:0 24px 50px -40px rgba(6,34,54,.5)}
.product-card:hover{box-shadow:0 34px 60px -30px rgba(6,34,54,.45)}
.product-card .thumb{position:relative;aspect-ratio:1;background:radial-gradient(circle at 50% 35%,#ffffff,#e4eef3);overflow:hidden}
.product-card .thumb img{width:100%;height:100%;object-fit:contain;padding:14px;transition:transform .7s var(--ease)}
.product-card:hover .thumb img{transform:scale(1.06) translateZ(20px)}
.product-card .tag{position:absolute;z-index:1;top:12px;left:12px;font-family:var(--f-mono);font-size:.62rem;letter-spacing:.08em;text-transform:uppercase;padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.85);backdrop-filter:blur(6px);color:var(--ink-soft);border:1px solid var(--line)}
.product-card .body{padding:18px 20px 20px}
.product-card h4{font-size:1.05rem;color:var(--ink);margin-bottom:6px;letter-spacing:-.01em}
.product-card .price{display:block;font-family:var(--f-mono);font-size:.86rem;color:var(--blue);font-weight:600;margin-bottom:8px}
.product-card .feats{font-size:.84rem;color:var(--ink-soft);margin-bottom:12px;min-height:1.2em}
.product-card .more{display:inline-flex;align-items:center;gap:6px;font-size:.84rem;font-weight:600;color:var(--ink)}
.product-card .more svg{width:15px;height:15px;transition:transform .35s var(--ease)}
.product-card:hover .more svg{transform:translateX(4px)}
.empty-state{padding:50px;text-align:center;border-radius:var(--r-l);border:1px dashed rgba(11,34,50,.2);color:var(--ink-soft)}

.services-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:60px}
.service{display:flex;gap:16px;padding:24px;border-radius:var(--r-m);background:var(--paper-2);border:1px solid var(--line)}
.service .icn{flex:none;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--ink);color:var(--ozone)}
.service .icn svg{width:22px;height:22px}
.service h3{font-size:1.02rem;color:var(--ink);margin-bottom:4px}
.service p{font-size:.88rem;color:var(--ink-soft)}

/* alianzas */
.section--tight.section--light{background:var(--paper);border-top:1px solid var(--line)}
.alliances{text-align:center}
.alliances .eyebrow{justify-content:center}
.alliances h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:30px}
.partners-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.partner{padding:16px 28px;border-radius:999px;background:#fff;border:1px solid var(--line);font-family:var(--f-display);font-weight:600;color:var(--ink)}

/* clientes */
.clients-marquee-section{background:var(--paper);color:var(--ink);padding:20px 0 clamp(70px,9vw,110px)}
.clients-marquee-section h2{font-size:clamp(1.6rem,3vw,2.3rem);text-align:center;margin-bottom:30px}
.clients-marquee{overflow:hidden;-webkit-mask:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.clients-track{display:flex;width:max-content;animation:marquee 60s linear infinite}
.clients-marquee:hover .clients-track{animation-play-state:paused}
.clients-set{display:flex;gap:14px;padding-right:14px}
.client-mark{width:170px;height:96px;flex:none;display:grid;place-items:center;padding:16px 20px;border-radius:var(--r-m);background:#fff;border:1px solid var(--line)}
.client-mark img{max-height:60px;width:auto;object-fit:contain;filter:saturate(.9);transition:transform .4s var(--ease)}
.client-mark:hover img{transform:scale(1.06)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* contacto */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,70px);align-items:start}
.contact h2{margin-bottom:16px}
.contact .lead{margin-bottom:30px}
.contact-cards{display:grid;gap:10px;margin-bottom:24px}
.contact-card{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:var(--r-m);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);transition:border-color .3s,transform .4s var(--ease)}
.contact-card:hover{border-color:var(--ozone);transform:translateX(4px)}
.contact-card .icn{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--grad-brand);color:#fff;flex:none}
.contact-card .icn svg{width:20px;height:20px}
.contact-card strong{display:block;color:#fff;font-size:.98rem;word-break:break-word}
.contact-card span{font-size:.8rem;color:#9fc3d4}
.rep-list{display:flex;flex-wrap:wrap;gap:16px}
.rep{display:flex;align-items:center;gap:10px}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-family:var(--f-mono);font-size:.78rem;background:rgba(46,242,192,.14);color:var(--ozone);border:1px solid rgba(46,242,192,.3)}
.rep strong{display:block;color:#fff;font-size:.92rem}
.rep span{font-family:var(--f-mono);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:#9fc3d4}
.contact-form{padding:clamp(24px,3vw,36px);border-radius:var(--r-l);background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(14px);box-shadow:0 40px 80px -40px rgba(0,0,0,.6)}
.contact-form h3{font-size:1.5rem;color:#fff;margin-bottom:6px}
.contact-form>p{color:#b9d3e0;margin-bottom:22px;font-size:.94rem}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{margin-bottom:14px}
.field label{display:block;font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:#9fc3d4;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:13px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:rgba(3,16,26,.45);color:#fff;font:inherit;font-size:16px;transition:border-color .3s,box-shadow .3s}
.field select option{color:var(--ink)}
.field input::placeholder,.field textarea::placeholder{color:#6f8fa0}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ozone);box-shadow:0 0 0 4px rgba(46,242,192,.15)}

/* footer */
.site-footer{background:var(--abyss);border-top:1px solid rgba(255,255,255,.07);padding:40px 0 30px}
.footer-inner{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--f-display);font-weight:700;color:#fff}
.footer-brand img{width:34px;height:34px;object-fit:contain}
.footer-links{display:flex;flex-wrap:wrap;gap:22px;font-size:.9rem;color:#9fc3d4}
.footer-links a:hover{color:#fff}
.footer-bottom{text-align:center;margin-top:28px;font-size:.8rem;color:#6f8fa0}

/* modal */
.modal-overlay{position:fixed;inset:0;z-index:300;display:grid;place-items:center;padding:16px;background:rgba(3,16,26,.7);backdrop-filter:blur(10px);opacity:0;visibility:hidden;transition:opacity .35s,visibility .35s}
.modal-overlay.open{opacity:1;visibility:visible}
.modal-card{position:relative;width:min(880px,100%);max-height:calc(100vh - 32px);overflow:auto;display:grid;grid-template-columns:1fr 1fr;border-radius:var(--r-l);background:#fff;color:var(--ink);transform:translateY(20px) scale(.98);transition:transform .5s var(--ease)}
.modal-overlay.open .modal-card{transform:none}
.m-photo{background:radial-gradient(circle at 50% 35%,#fff,#e4eef3);min-height:320px}
.m-photo img{width:100%;height:100%;object-fit:contain;padding:24px}
.m-body{padding:34px 30px}
.m-body h3{font-size:1.8rem;margin:4px 0 8px}
.m-body .price{display:block;font-family:var(--f-mono);color:var(--blue);font-weight:600;margin-bottom:18px}
.m-body .eyebrow{color:var(--blue);margin-bottom:6px}
.feat-list{display:grid;gap:8px;margin-bottom:24px}
.feat-list li{display:flex;gap:10px;font-size:.94rem;color:var(--ink-soft)}
.feat-list svg{width:18px;height:18px;flex:none;color:#0fb492;margin-top:3px}
.modal-close{position:absolute;top:14px;right:14px;z-index:2;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--paper-2);color:var(--ink)}
.esc-hint{margin-top:16px;font-size:.76rem;color:#8aa0ad}
kbd{font-family:var(--f-mono);font-size:.7rem;padding:2px 6px;border-radius:5px;border:1px solid var(--line);background:var(--paper)}

/* whatsapp */
.whatsapp-fab{position:fixed;right:20px;bottom:20px;z-index:90;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:#25d366;box-shadow:0 16px 30px -10px rgba(37,211,102,.6);transition:transform .4s var(--ease)}
.whatsapp-fab:hover{transform:scale(1.08)}
.whatsapp-fab svg{width:30px;height:30px}
.wa-tip{position:absolute;right:70px;white-space:nowrap;padding:8px 12px;border-radius:10px;background:#fff;color:var(--ink);font-size:.82rem;font-weight:600;opacity:0;transform:translateX(8px);transition:opacity .3s,transform .3s var(--ease);pointer-events:none}
.whatsapp-fab:hover .wa-tip{opacity:1;transform:none}

/* revelado */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1020px){
  .nav-links{position:fixed;inset:70px 16px auto;flex-direction:column;gap:2px;padding:10px;border-radius:var(--r-m);background:rgba(3,16,26,.92);opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .3s,transform .4s var(--ease),visibility .3s}
  .nav-links a{padding:14px 16px;font-size:1rem}
  .nav-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-toggle{display:block}
  .hero-grid,.science-grid,.contact-grid{grid-template-columns:1fr}
  .section-head.split{grid-template-columns:1fr}
  .pillars,.services-strip{grid-template-columns:1fr}
  .o3-stage{max-width:420px;margin-inline:auto;width:100%}
}
@media (max-width:760px){
  .filter-intro{height:640vh}
  .header-cta .btn{display:none}
  .fi-title{bottom:auto;top:clamp(96px,16vh,150px)}
  .fi-title h1{font-size:clamp(2.7rem,13vw,4.2rem)}
  .fi-card{left:16px;right:16px;top:auto;bottom:88px;width:auto;transform:none;padding:20px 20px 18px}
  @keyframes cardIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
  .fi-name{font-size:1.6rem;margin-bottom:6px}
  .fi-desc{font-size:.9rem;margin-bottom:12px}
  .fi-num{font-size:1.9rem}
  .fi-specs{gap:10px;padding-top:12px}
  .fi-tag-txt{display:none}
  .fi-tag.on .fi-tag-txt{display:inline}
  .fi-tag-line{width:20px}
  .fi-rail{top:auto;bottom:auto;right:12px;top:96px;transform:none;gap:10px}
  .fi-rail-dot span{display:none}
  .fi-skip{display:none}
  .fi-final{bottom:12vh}
  .stats-grid{grid-template-columns:1fr 1fr}
  .o3-steps{grid-template-columns:1fr}
  .category-intro{grid-template-columns:1fr}
  .row-2{grid-template-columns:1fr}
  .modal-card{grid-template-columns:1fr}
  .m-photo{min-height:220px}
  .product-grid{grid-template-columns:1fr 1fr;gap:12px}
  .product-card .body{padding:14px}
  .client-mark{width:140px;height:84px}
}
@media (max-width:420px){ .product-card h4{font-size:.92rem} .product-card .body{padding:12px} .product-card .price{font-size:.72rem} .product-card .more{font-size:.78rem} }

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}
.product-card{transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.product-card.tilting{transition:transform .08s linear,box-shadow .5s}
.fi-tag.left{flex-direction:row-reverse;transform-origin:right center}
.fi-tag.left{translate:-100% 0}
.fi-tag.left .fi-tag-line{background:linear-gradient(270deg,rgba(255,255,255,.7),rgba(255,255,255,.15))}
.fi-final h2,.fi-final p{text-shadow:0 4px 30px rgba(3,16,26,.85),0 1px 2px rgba(3,16,26,.6)}

/* molécula de ozono 3D */
.o3-stage{aspect-ratio:1;max-width:560px;width:100%;margin-inline:auto}
#o3Canvas{position:absolute;inset:0;width:100%;height:100%;display:block;cursor:grab;z-index:1}
.o3-stage.grabbing #o3Canvas{cursor:grabbing}
.o3-fallback{position:absolute;inset:0;display:none;place-items:center}
.o3-stage.o3-fallback-on .o3-fallback{display:grid}
.o3-stage.o3-fallback-on #o3Canvas,.o3-stage.o3-fallback-on .o3-hint{display:none}
.o3-fallback .o3{position:relative}
.o3-label{z-index:2;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}
.o3-label span{font-size:.64rem;letter-spacing:.14em;color:#7fa8bb}
.o3-hint{position:absolute;z-index:2;top:4%;right:4%;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:#7fa8bb;padding:6px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:rgba(3,16,26,.35);opacity:0;transition:opacity .4s}
.o3-stage:hover .o3-hint{opacity:1}
@media (hover:none){.o3-hint{opacity:1}}
#o3Canvas{-webkit-mask-image:radial-gradient(circle at 50% 50%,#000 58%,transparent 71%);mask-image:radial-gradient(circle at 50% 50%,#000 58%,transparent 71%)}
.o3-label strong{font-family:var(--f-display);font-size:1.05rem;font-weight:700;letter-spacing:.02em;color:#fff}
.o3-label sub{font-size:.62em;vertical-align:-.25em;color:var(--ozone)}
.o3-label span{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;text-transform:none;color:#8fb4c6}
@media (max-width:760px){
  .tabs-wrap{margin-inline:-16px;padding:2px 16px 8px;overflow-x:auto;scrollbar-width:none;scroll-snap-type:x proximity;-webkit-mask:linear-gradient(90deg,transparent,#000 16px,#000 calc(100% - 28px),transparent)}
  .tabs-wrap::-webkit-scrollbar{display:none}
  .tabs-bar{flex-wrap:nowrap;width:max-content}
  .tab-btn{scroll-snap-align:start}
}

/* ============================================================
   PULIDO
   ============================================================ */
/* header claro sobre secciones claras */
.site-header{transition:padding .4s var(--ease),background .4s,border-color .4s,color .4s}
.site-header.scrolled.on-light{background:rgba(244,248,250,.82);border-color:var(--line);box-shadow:0 10px 30px -24px rgba(6,34,54,.5)}
.site-header.on-light .brand-word{color:var(--ink)}
.site-header.on-light .brand-word span{color:var(--blue)}
.site-header.on-light .nav-links{background:rgba(11,34,50,.04);border-color:var(--line)}
.site-header.on-light .nav-links a{color:var(--ink-soft)}
.site-header.on-light .nav-links a:hover{background:rgba(11,34,50,.07);color:var(--ink)}
.site-header.on-light .admin-link,.site-header.on-light .nav-toggle{border-color:rgba(11,34,50,.18);color:var(--ink)}
.site-header.on-light .nav-toggle span{background:var(--ink)}
@media (max-width:1020px){ .site-header.on-light .nav-links{background:rgba(244,248,250,.97)} }

/* transiciones suaves entre secciones */
#nosotros,#ciencia,#productos,#contacto{border-radius:36px 36px 0 0;margin-top:-36px;z-index:1}
#nosotros{z-index:2}#ciencia{z-index:3}#productos{z-index:4}#alianzas,.clients-marquee-section{position:relative;z-index:5}#contacto{z-index:6}
.hero{padding-bottom:156px}

/* tarjetas de producto: foto a sangre */
.product-card .thumb{aspect-ratio:4/3.4;background:var(--paper-2)}
.product-card .thumb img{object-fit:cover;padding:0}
.product-card:hover .thumb img{transform:scale(1.05)}
.product-card .body{padding:18px 20px 20px}
.product-card .price{display:inline-flex;margin-bottom:10px;padding:4px 10px;border-radius:999px;background:var(--paper-2);font-size:.8rem}
.category-intro .photo img{object-fit:cover}

/* ritmo y contraste */
#productos{padding-bottom:clamp(60px,7vw,90px)}
.section--tight.section--light{border-top:0;padding-top:20px}
.stat span{font-size:.76rem;letter-spacing:.08em;color:#b6d3e1}
.partner{box-shadow:0 10px 24px -20px rgba(6,34,54,.5)}
.eyebrow{letter-spacing:.16em}
.product-card .more{display:flex;width:max-content}