/* ============================================================
   Jesús Jiménez González · Consultor Independiente de Immunotec
   Hoja de estilos — diseño premium editorial-clínico
   Paleta: azul Immunotec + oro champán · Fraunces + Inter
   ============================================================ */

/* ---------- Tokens ---------- */
:root{
  --bg:#FAF8F4;
  --bg-alt:#FFFFFF;
  --ink:#16243A;
  --ink-soft:#5B6577;
  --blue:#0033A0;
  --blue-deep:#001B57;
  --blue-night:#00113A;
  --gold:#C9A961;
  --gold-bright:#DCC289;
  --line:#E8E2D6;
  --line-dark:rgba(255,255,255,.14);

  --serif:'Fraunces',Georgia,'Times New Roman',serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;

  --maxw:1180px;
  --radius:18px;
  --shadow-sm:0 4px 18px rgba(0,27,87,.07);
  --shadow-md:0 18px 50px rgba(0,27,87,.13);
  --shadow-lg:0 30px 80px rgba(0,17,58,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}

/* ---------- Tipografía ---------- */
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;line-height:1.14;letter-spacing:-.015em}
h1{font-size:clamp(2.4rem,5.4vw,4.05rem)}
h2{font-size:clamp(1.95rem,3.7vw,2.9rem)}
h3{font-size:clamp(1.25rem,2vw,1.55rem)}
p{color:var(--ink-soft)}
.serif-i{font-style:italic}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:clamp(64px,9vw,128px) 0}
.section--tight{padding:clamp(48px,6vw,84px) 0}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans);font-size:.74rem;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;color:var(--gold);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:30px;height:1.5px;background:var(--gold);display:inline-block}
.eyebrow--center{justify-content:center}
.eyebrow--light{color:var(--gold-bright)}

.lead{font-size:1.12rem;max-width:60ch}
.section-head{max-width:680px;margin:0 auto;text-align:center}
.section-head p{margin-top:18px}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--sans);font-weight:600;font-size:.97rem;letter-spacing:.01em;
  padding:16px 30px;border-radius:40px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
  white-space:nowrap;cursor:pointer;
}
.btn svg{width:18px;height:18px;flex:none}
.btn--gold{background:var(--gold);color:var(--blue-night);box-shadow:0 10px 26px rgba(201,169,97,.36)}
.btn--gold:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(201,169,97,.5)}
.btn--blue{background:var(--blue);color:#fff;box-shadow:0 10px 26px rgba(0,51,160,.3)}
.btn--blue:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(0,51,160,.42)}
.btn--ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn--ghost:hover{transform:translateY(-3px);border-color:#fff;background:rgba(255,255,255,.08)}
.btn--outline{background:transparent;color:var(--blue);border:1.5px solid var(--blue)}
.btn--outline:hover{transform:translateY(-3px);background:var(--blue);color:#fff}
.btn--lg{padding:18px 36px;font-size:1.02rem}
.btn--sm{padding:11px 22px;font-size:.86rem}
.btn--mobile{display:none}

/* ============================================================
   HEADER
   ============================================================ */
.header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  padding:18px 0;
  transition:background .35s var(--ease),box-shadow .35s var(--ease),padding .35s var(--ease);
}
.header.is-scrolled{
  background:rgba(250,248,244,.92);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  box-shadow:0 1px 0 var(--line),0 8px 28px rgba(0,27,87,.07);
  padding:11px 0;
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px}

.brand{display:flex;align-items:center;gap:13px;flex:none}
.brand img{height:46px;width:auto;transition:height .35s var(--ease)}
.header.is-scrolled .brand img{height:40px}
.brand-logo--light{display:block}
.brand-logo--dark{display:none}
.header.is-scrolled .brand-logo--light{display:none}
.header.is-scrolled .brand-logo--dark{display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-family:var(--serif);font-weight:600;font-size:1.02rem;color:#fff;transition:color .35s var(--ease)}
.brand-text span{font-size:.66rem;letter-spacing:.13em;text-transform:uppercase;color:rgba(255,255,255,.72);transition:color .35s var(--ease)}
.header.is-scrolled .brand-text strong{color:var(--ink)}
.header.is-scrolled .brand-text span{color:var(--ink-soft)}

.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  font-size:.92rem;font-weight:500;color:rgba(255,255,255,.86);
  position:relative;padding:4px 0;transition:color .25s;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1.5px;
  background:var(--gold);transition:width .3s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:100%}
.header.is-scrolled .nav-links a{color:var(--ink-soft)}
.header.is-scrolled .nav-links a:hover{color:var(--blue)}

.nav-actions{display:flex;align-items:center;gap:14px}

/* Selector de idioma */
.lang{position:relative}
.lang-btn{
  display:flex;align-items:center;gap:7px;
  font-size:.86rem;font-weight:600;color:rgba(255,255,255,.9);
  padding:9px 13px;border-radius:30px;border:1.5px solid rgba(255,255,255,.32);
  transition:border-color .25s,color .25s,background .25s;
}
.lang-btn .chev{width:13px;height:13px;transition:transform .3s var(--ease)}
.lang.is-open .lang-btn .chev{transform:rotate(180deg)}
.header.is-scrolled .lang-btn{color:var(--ink);border-color:var(--line)}
.lang-btn:hover{border-color:var(--gold)}
.lang-menu{
  position:absolute;right:0;top:calc(100% + 12px);min-width:208px;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-md);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.lang.is-open .lang-menu{opacity:1;visibility:visible;transform:translateY(0)}
.lang-menu li>*{
  display:flex;align-items:center;gap:10px;width:100%;
  padding:9px 12px;border-radius:9px;font-size:.9rem;color:var(--ink);
  transition:background .2s;
}
.lang-menu a:hover{background:var(--bg)}
.lang-menu .is-current{background:rgba(0,51,160,.07);font-weight:600;color:var(--blue)}
.lang-menu .is-current .check{margin-left:auto;color:var(--gold)}
.lang-menu .soon{color:var(--ink-soft);cursor:not-allowed}
.lang-menu .soon .tag{
  margin-left:auto;font-size:.62rem;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--gold);
  background:rgba(201,169,97,.14);padding:3px 8px;border-radius:20px;
}
.lang-flag{font-size:1.05rem;line-height:1}

/* Botón hamburguesa */
.burger{display:none;width:44px;height:44px;border-radius:50%;
  align-items:center;justify-content:center;flex-direction:column;gap:5px}
.burger span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:.3s var(--ease)}
.header.is-scrolled .burger span{background:var(--ink)}
.burger.is-open span{background:var(--ink)}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;overflow:hidden;
  background:radial-gradient(120% 130% at 78% 8%,#0a47c4 0%,var(--blue-deep) 46%,var(--blue-night) 100%);
  color:#fff;
  padding:clamp(140px,18vw,210px) 0 clamp(80px,11vw,130px);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(40% 50% at 12% 88%,rgba(201,169,97,.16),transparent 70%),
    radial-gradient(30% 40% at 92% 14%,rgba(255,255,255,.07),transparent 70%);
  pointer-events:none;
}
.hero-molecule{
  position:absolute;right:-90px;top:50%;transform:translateY(-50%);
  width:min(620px,52vw);opacity:.5;pointer-events:none;
  color:var(--gold);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.08fr .92fr;
  gap:56px;align-items:center;
}
.hero-copy h1{color:#fff;margin:6px 0 22px}
.hero-copy h1 em{font-style:italic;color:var(--gold-bright)}
.hero-copy .lead{color:rgba(255,255,255,.82);font-size:1.15rem;margin-bottom:34px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:24px 36px;margin-top:42px;
  padding-top:30px;border-top:1px solid var(--line-dark);
}
.hero-trust div{display:flex;flex-direction:column;gap:2px}
.hero-trust strong{font-family:var(--serif);font-size:1.7rem;color:var(--gold-bright);font-weight:500}
.hero-trust span{font-size:.82rem;color:rgba(255,255,255,.62);letter-spacing:.02em}

.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.hero-card{
  position:relative;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);border-radius:26px;
  padding:38px 34px;backdrop-filter:blur(6px);
  box-shadow:var(--shadow-lg);
}
.hero-card img{width:100%;border-radius:14px}
.hero-badge{
  position:absolute;display:flex;align-items:center;gap:11px;
  background:#fff;color:var(--ink);border-radius:16px;
  padding:13px 18px;box-shadow:var(--shadow-md);
}
.hero-badge .ico{
  width:38px;height:38px;border-radius:50%;flex:none;
  background:rgba(0,51,160,.1);display:flex;align-items:center;justify-content:center;color:var(--blue);
}
.hero-badge .ico svg{width:20px;height:20px}
.hero-badge b{font-family:var(--serif);font-weight:600;font-size:.95rem;display:block}
.hero-badge small{font-size:.74rem;color:var(--ink-soft)}
.hero-badge--tl{top:14px;left:-34px}
.hero-badge--br{bottom:18px;right:-30px}

/* ============================================================
   INTRO / IMMUNOTEC
   ============================================================ */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.intro-copy h2{margin-bottom:22px}
.intro-copy h2 em{font-style:italic;color:var(--blue)}
.intro-copy p+p{margin-top:16px}
.intro-points{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.intro-points li{display:flex;gap:13px;align-items:flex-start;color:var(--ink)}
.intro-points .tick{
  width:26px;height:26px;border-radius:50%;flex:none;margin-top:1px;
  background:rgba(0,51,160,.09);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
}
.intro-points .tick svg{width:14px;height:14px}
.intro-points b{font-weight:600}

.intro-visual{position:relative}
.intro-visual .frame{
  background:linear-gradient(150deg,#fff,#F2EEE4);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:46px;box-shadow:var(--shadow-sm);
}
.intro-visual .frame img{margin:0 auto;filter:drop-shadow(0 26px 40px rgba(0,27,87,.22))}
.intro-quote{
  margin-top:22px;background:var(--blue-deep);color:#fff;
  border-radius:var(--radius);padding:28px 30px;position:relative;overflow:hidden;
}
.intro-quote::before{
  content:"\201C";position:absolute;top:-26px;right:14px;
  font-family:var(--serif);font-size:9rem;color:rgba(201,169,97,.22);
}
.intro-quote p{color:#fff;font-family:var(--serif);font-style:italic;font-size:1.18rem;line-height:1.5}
.intro-quote cite{display:block;margin-top:14px;font-style:normal;font-size:.86rem;color:var(--gold-bright);font-weight:600;letter-spacing:.04em}

/* ============================================================
   VÍDEOS
   ============================================================ */
.videos{background:var(--bg-alt);position:relative}
.video-group{margin-top:clamp(48px,6vw,76px)}
.video-group:first-of-type{margin-top:clamp(38px,5vw,58px)}
.group-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}
.group-head .gh-left{max-width:620px}
.group-head h3{font-size:clamp(1.5rem,2.6vw,2rem);color:var(--ink)}
.group-head .num{
  font-family:var(--serif);font-size:.95rem;color:var(--gold);
  font-weight:600;letter-spacing:.05em;
}
.group-head p{margin-top:8px}

.video-grid{
  display:grid;gap:26px;
  grid-template-columns:repeat(auto-fill,minmax(310px,1fr));
}
.video-card{
  background:var(--bg-alt);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(201,169,97,.6)}

.video-thumb{
  display:block;width:100%;
  position:relative;aspect-ratio:16/9;cursor:pointer;
  background:var(--blue-deep) center/cover no-repeat;
  overflow:hidden;padding:0;
}
.video-thumb img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .6s var(--ease),filter .35s var(--ease);
}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.video-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,17,58,.08) 0%,rgba(0,17,58,.55) 100%);
  transition:opacity .35s;
}
.video-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:66px;height:66px;border-radius:50%;
  background:var(--gold);color:var(--blue-night);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 30px rgba(0,17,58,.4);
  transition:transform .3s var(--ease),background .3s;
  z-index:2;
}
.video-play svg{width:26px;height:26px;margin-left:3px}
.video-card:hover .video-play{transform:translate(-50%,-50%) scale(1.12);background:var(--gold-bright)}
.video-dur{
  position:absolute;right:12px;bottom:12px;z-index:2;
  font-size:.72rem;font-weight:600;color:#fff;
  background:rgba(0,17,58,.78);padding:4px 9px;border-radius:6px;letter-spacing:.04em;
}
.video-thumb iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

.video-body{padding:22px 24px 24px}
.video-tag{
  font-size:.7rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
  color:var(--gold);display:flex;align-items:center;gap:8px;margin-bottom:9px;
}
.video-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold)}
.video-body h4{font-size:1.16rem;color:var(--ink);margin-bottom:9px;line-height:1.25}
.video-body p{font-size:.92rem;line-height:1.6}

/* Bloque presentador (Dr. Salvador Gutiérrez) */
.presenter{
  position:relative;display:flex;gap:32px;align-items:center;overflow:hidden;
  background:linear-gradient(150deg,var(--blue-deep),var(--blue-night));
  border:1px solid rgba(201,169,97,.28);
  border-radius:var(--radius);
  padding:36px 40px;
  margin:clamp(36px,5vw,54px) 0 4px;
}
.presenter::before{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;
  border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(201,169,97,.18),transparent 70%);
}
.presenter-avatar{
  position:relative;width:104px;height:104px;border-radius:50%;flex:none;
  background:radial-gradient(circle at 34% 28%,#16458a,var(--blue-night));
  border:2px solid var(--gold);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:600;font-size:2.15rem;color:var(--gold-bright);
  letter-spacing:.02em;
}
.presenter-body{position:relative}
.presenter-label{
  display:block;font-size:.72rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--gold);margin-bottom:7px;
}
.presenter-body h3{color:#fff;font-size:1.5rem;margin-bottom:3px}
.presenter-role{
  color:var(--gold-bright);font-size:.9rem;font-weight:500;
  margin-bottom:13px;letter-spacing:.01em;
}
.presenter-body p{color:rgba(255,255,255,.82);font-size:.97rem;line-height:1.65;max-width:64ch;margin:0}
@media (max-width:680px){
  .presenter{flex-direction:column;text-align:center;padding:32px 26px;gap:22px}
  .presenter-body p{margin:0 auto}
}

/* ============================================================
   CTA / RUTAS DE COMPRA
   ============================================================ */
.paths{
  background:linear-gradient(160deg,var(--blue-deep) 0%,var(--blue-night) 100%);
  color:#fff;position:relative;overflow:hidden;
}
.paths::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(34% 50% at 8% 12%,rgba(201,169,97,.16),transparent 70%),
             radial-gradient(34% 50% at 96% 92%,rgba(255,255,255,.06),transparent 70%);
}
.paths .section-head h2{color:#fff}
.paths .section-head h2 em{font-style:italic;color:var(--gold-bright)}
.paths .section-head p{color:rgba(255,255,255,.78)}
.path-grid{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:28px;
  margin-top:52px;
}
.path-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:22px;padding:42px 38px;
  display:flex;flex-direction:column;
  transition:transform .35s var(--ease),border-color .35s var(--ease),background .35s;
}
.path-card:hover{transform:translateY(-6px);border-color:rgba(201,169,97,.55);background:rgba(255,255,255,.07)}
.path-card.is-featured{border-color:rgba(201,169,97,.4);background:rgba(201,169,97,.07)}
.path-ico{
  width:58px;height:58px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;margin-bottom:22px;
}
.path-ico svg{width:28px;height:28px}
.path-ico--client{background:rgba(255,255,255,.1);color:#fff}
.path-ico--consultor{background:var(--gold);color:var(--blue-night)}
.path-card h3{color:#fff;font-size:1.5rem;margin-bottom:10px}
.path-card .ptag{
  font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold-bright);margin-bottom:14px;display:block;
}
.path-card p{color:rgba(255,255,255,.76);font-size:.96rem;flex:1}
.path-list{margin:18px 0 26px;display:flex;flex-direction:column;gap:11px}
.path-list li{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;color:rgba(255,255,255,.88)}
.path-list svg{width:17px;height:17px;flex:none;margin-top:3px;color:var(--gold)}
.path-card .btn{width:100%}
.path-question{
  font-family:var(--serif);font-style:italic;font-size:1.22rem;line-height:1.35;
  color:var(--gold-bright);margin:-2px 0 14px;
}

/* ============================================================
   CIENCIA Y PATENTES
   ============================================================ */
.science{
  background:linear-gradient(165deg,#06286f 0%,var(--blue-deep) 55%,var(--blue-night) 100%);
  color:#fff;position:relative;overflow:hidden;
}
.science::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(32% 46% at 92% 8%,rgba(201,169,97,.16),transparent 70%),
             radial-gradient(32% 46% at 6% 96%,rgba(255,255,255,.06),transparent 70%);
}
.science .section-head h2{color:#fff}
.science .section-head h2 em{font-style:italic;color:var(--gold-bright)}
.science .section-head p{color:rgba(255,255,255,.8)}
.sci-stats{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);
  gap:16px;margin-top:52px;
}
.sci-stat{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.13);
  border-radius:14px;padding:28px 22px;text-align:center;
  transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s;
}
.sci-stat:hover{transform:translateY(-5px);border-color:rgba(201,169,97,.5);background:rgba(255,255,255,.07)}
.sci-stat .n{
  display:block;font-family:var(--serif);font-weight:500;
  font-size:2.5rem;line-height:1;color:var(--gold-bright);margin-bottom:9px;
}
.sci-stat .l{display:block;font-size:.83rem;color:rgba(255,255,255,.72);line-height:1.5}
.sci-grid{
  position:relative;display:grid;grid-template-columns:repeat(3,1fr);
  gap:22px;margin-top:22px;
}
.sci-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.13);
  border-radius:18px;padding:30px 26px;
  transition:transform .35s var(--ease),border-color .35s var(--ease),background .35s;
}
.sci-card:hover{transform:translateY(-6px);border-color:rgba(201,169,97,.5);background:rgba(255,255,255,.07)}
.sci-ico{
  width:52px;height:52px;border-radius:14px;margin-bottom:18px;
  background:rgba(201,169,97,.14);color:var(--gold-bright);
  display:flex;align-items:center;justify-content:center;
}
.sci-ico svg{width:25px;height:25px}
.sci-card .big{
  display:block;font-family:var(--serif);font-weight:500;
  font-size:2.3rem;line-height:1;color:var(--gold-bright);margin-bottom:6px;
}
.sci-card h3{color:#fff;font-size:1.16rem;margin-bottom:9px}
.sci-card p{color:rgba(255,255,255,.74);font-size:.9rem;line-height:1.6}
.sci-note{
  position:relative;margin:34px auto 0;max-width:70ch;text-align:center;
  font-size:.82rem;color:rgba(255,255,255,.5);
}

/* ============================================================
   CONTACTO
   ============================================================ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.contact-copy h2{margin-bottom:18px}
.contact-copy h2 em{font-style:italic;color:var(--blue)}
.contact-cards{display:flex;flex-direction:column;gap:14px;margin-top:30px}
.contact-card{
  display:flex;align-items:center;gap:18px;
  background:var(--bg-alt);border:1px solid var(--line);
  border-radius:14px;padding:18px 22px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
a.contact-card:hover{transform:translateX(5px);box-shadow:var(--shadow-sm);border-color:rgba(201,169,97,.6)}
.contact-card .ci{
  width:50px;height:50px;border-radius:13px;flex:none;
  background:rgba(0,51,160,.08);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
}
.contact-card .ci svg{width:23px;height:23px}
.contact-card small{display:block;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);font-weight:600}
.contact-card b{font-family:var(--serif);font-weight:600;font-size:1.12rem;color:var(--ink)}

.contact-panel{
  background:linear-gradient(160deg,var(--blue-deep),var(--blue-night));
  border-radius:var(--radius);padding:46px 42px;color:#fff;
  position:relative;overflow:hidden;box-shadow:var(--shadow-md);
}
.contact-panel::before{
  content:"";position:absolute;right:-60px;bottom:-60px;width:240px;height:240px;
  border-radius:50%;background:radial-gradient(circle,rgba(201,169,97,.2),transparent 70%);
}
.contact-panel .wa-ico{
  width:62px;height:62px;border-radius:50%;background:#25D366;
  display:flex;align-items:center;justify-content:center;margin-bottom:22px;
}
.contact-panel .wa-ico svg{width:34px;height:34px;color:#fff}
.contact-panel h3{color:#fff;font-size:1.6rem;margin-bottom:12px}
.contact-panel p{color:rgba(255,255,255,.8);margin-bottom:24px}
.contact-panel .btn{width:100%}
.contact-panel .legal-id{
  margin-top:24px;padding-top:20px;border-top:1px solid var(--line-dark);
  font-size:.82rem;color:rgba(255,255,255,.6);
}
.contact-panel .legal-id b{color:var(--gold-bright)}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{background:var(--blue-night);color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;
  padding-bottom:44px;border-bottom:1px solid var(--line-dark);
}
.footer-brand img{height:54px;width:auto;margin-bottom:18px}
.footer-brand p{font-size:.92rem;color:rgba(255,255,255,.62);max-width:36ch}
.footer-col h5{
  font-family:var(--sans);font-size:.78rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--gold);margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:.92rem;color:rgba(255,255,255,.72);transition:color .25s}
.footer-col a:hover{color:var(--gold-bright)}
.footer-social{display:flex;gap:12px;margin-top:18px}
.footer-social a{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:center;
  transition:background .25s,border-color .25s,transform .25s;
}
.footer-social a:hover{background:var(--gold);border-color:var(--gold);transform:translateY(-3px)}
.footer-social a:hover svg{color:var(--blue-night)}
.footer-social svg{width:18px;height:18px;color:rgba(255,255,255,.8)}

.footer-disclaimer{
  padding:28px 0;border-bottom:1px solid var(--line-dark);
}
.footer-disclaimer p{
  font-size:.8rem;line-height:1.7;color:rgba(255,255,255,.5);max-width:none;
}
.footer-disclaimer p+p{margin-top:10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  padding:24px 0;font-size:.82rem;color:rgba(255,255,255,.5);
}
.footer-bottom a:hover{color:var(--gold-bright)}

/* ============================================================
   WHATSAPP FLOTANTE
   ============================================================ */
.wa-float{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:flex;align-items:center;gap:0;
  background:#25D366;color:#fff;border-radius:34px;
  padding:0;height:60px;width:60px;overflow:hidden;
  box-shadow:0 12px 30px rgba(37,211,102,.45);
  transition:width .4s var(--ease),transform .3s var(--ease);
}
.wa-float svg{width:30px;height:30px;flex:none;margin:0 15px}
.wa-float span{
  white-space:nowrap;font-weight:600;font-size:.92rem;
  padding-right:22px;opacity:0;transition:opacity .3s;
}
.wa-float:hover{width:228px;transform:scale(1.03)}
.wa-float:hover span{opacity:1}

/* ============================================================
   REVEAL ON SCROLL
   ============================================================ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.08s}
.reveal[data-d="2"]{transition-delay:.16s}
.reveal[data-d="3"]{transition-delay:.24s}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:980px){
  .hero-grid,.intro-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{order:-1;max-width:420px;margin:0 auto}
  .hero-molecule{opacity:.28;width:90vw;right:-30vw}
  .path-grid{grid-template-columns:1fr}
  .sci-grid{grid-template-columns:1fr}
  .sci-stats{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:900px){
  .brand-text span{display:none}
}
@media (max-width:760px){
  body{font-size:16px}
  .nav-links,.nav-actions .btn{display:none}
  .burger{display:flex}
  .header .nav-actions{gap:8px}
  .group-head{flex-direction:column;align-items:flex-start;gap:6px}
  .video-grid{grid-template-columns:1fr}
  .sci-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .hero-badge--tl{top:10px;left:10px}
  .hero-badge--br{bottom:10px;right:10px}
  .hero-badge{padding:10px 13px}
  .wa-float{right:16px;bottom:16px}

  /* Menú móvil desplegable */
  .nav-links{
    display:flex;flex-direction:column;align-items:flex-start;gap:0;
    position:fixed;inset:0 0 auto 0;top:0;
    background:var(--bg-alt);padding:96px 28px 32px;
    box-shadow:var(--shadow-md);
    transform:translateY(-110%);transition:transform .4s var(--ease);
    z-index:-1;
  }
  .nav-links.is-open{transform:translateY(0)}
  .nav-links a{
    width:100%;padding:16px 0;font-size:1.05rem;color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none}
  .nav-links .btn--mobile{
    display:inline-flex;margin-top:20px;width:100%;border-bottom:none;
  }
}
@media (max-width:480px){
  .brand-text{display:none}
  .hero-badge{display:none}
}
@media (max-width:420px){
  .wrap{padding:0 18px}
  .hero-card{padding:24px 20px}
  .path-card,.contact-panel{padding:32px 26px}
}

/* Accesibilidad: respeta preferencia de movimiento reducido */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}