/* TH Consultores — hoja única */
:root{
  --ink:#0b0c0e;
  --bg:#101215;
  --surface:#16191d;
  --surface-2:#1c2025;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --text:#e6e7e9;
  --muted:#9ca1a8;
  --accent:#5d6873;        /* acero del monograma */
  --accent-2:#737f8b;
  --accent-light:#bcc4cc;  /* plata para eyebrows y detalles */
  --radius:14px;
  --radius-sm:8px;
  --shadow:0 20px 50px rgba(0,0,0,.45);
  --container:1250px;
  --gap:clamp(20px,3vw,32px);
  --f-title:"Marcellus",Georgia,serif;
  --f-body:"Mulish",system-ui,sans-serif;
  --ease:cubic-bezier(.22,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--f-body);font-size:1.02rem;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5{font-family:var(--f-title);font-weight:400;line-height:1.18;margin:0;color:#f3f4f5;letter-spacing:.005em}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}

/* texto claro sobre bloques con imagen */
.hero h1,.hero h2,.hero h3,.hero h4,
.page-hero h1,.page-hero h2,.page-hero h3,.page-hero h4,
.cta h1,.cta h2,.cta h3,.cta h4,
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}

.eyebrow{display:block;font-family:var(--f-body);font-size:.74rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--accent-light);margin:0 0 12px}
.h2{font-size:clamp(1.8rem,3.2vw,2.6rem)}
.h3{font-size:clamp(1.25rem,1.8vw,1.5rem)}
.lead{font-size:1.1rem;color:#c9ccd0}
.muted{color:var(--muted)}

/* botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:.92rem;letter-spacing:.02em;border:1px solid transparent;cursor:pointer;transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),color .25s var(--ease)}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-2);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.06)}

/* header */
.site-header{position:fixed;inset:0 0 auto 0;z-index:90;transition:background .3s var(--ease),box-shadow .3s var(--ease),padding .3s var(--ease);padding:14px 0}
.site-header.is-scrolled{background:rgba(11,12,14,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 1px 0 var(--line);padding:6px 0}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand img{height:74px;width:auto;mix-blend-mode:lighten;transition:height .3s var(--ease)}
.site-header.is-scrolled .brand img{height:62px}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:.92rem;font-weight:600;color:#d5d8dc;position:relative;padding:6px 0;transition:color .2s}
.nav a:not(.btn)::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--accent-light);transition:right .3s var(--ease)}
.nav a:not(.btn):hover,.nav a.is-active{color:#fff}
.nav a:not(.btn):hover::after,.nav a.is-active::after{right:0}
.nav .btn{padding:10px 20px;color:#fff}
.nav .nav-cta-mobile{display:none}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.burger span{position:absolute;left:10px;right:10px;height:2px;background:#fff;transition:transform .3s var(--ease),opacity .2s}
.burger span:nth-child(1){top:15px}.burger span:nth-child(2){top:21px}.burger span:nth-child(3){top:27px}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:70;opacity:0;pointer-events:none;transition:opacity .3s}
.nav-backdrop.is-open{opacity:1;pointer-events:auto}

/* hero */
.hero{position:relative;isolation:isolate;min-height:min(100vh,860px);display:flex;align-items:center;padding:150px 0 110px;color:#fff;overflow:hidden;background:var(--ink)}
.hero__bg,.page-hero__bg,.cta__bg,.section__bg{position:absolute;inset:0;z-index:-2}
.hero__bg img,.page-hero__bg img,.cta__bg img,.section__bg img{width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(8,9,11,.8) 0%,rgba(8,9,11,.72) 45%,rgba(8,9,11,.35) 100%)}
.hero__content{max-width:700px}
.hero .eyebrow{margin-bottom:7px}
.hero h1{font-size:clamp(2.3rem,5vw,4rem);margin-top:15px;margin-bottom:22px}
.hero p{font-size:1.12rem;color:#d3d6da;max-width:600px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* page-hero */
.page-hero{position:relative;isolation:isolate;padding:190px 0 100px;color:#fff;overflow:hidden;background:var(--ink)}
.page-hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(8,9,11,.8) 0%,rgba(8,9,11,.7) 100%)}
.page-hero .eyebrow{margin-bottom:7px}
.page-hero h1{font-size:clamp(2.1rem,4.4vw,3.4rem);margin-top:15px;max-width:780px}
.page-hero p{margin-top:18px;max-width:640px;color:#d3d6da;font-size:1.08rem}

/* secciones */
.section{padding:clamp(72px,9vw,120px) 0}
.section--alt{background:var(--surface)}
.section--dark{position:relative;isolation:isolate;background:var(--ink);overflow:hidden;color:#e9eaec}
.section--dark::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(8,9,11,.78) 0%,rgba(8,9,11,.72) 100%)}
.section--plano::after{display:none}
.section-head{max-width:720px;margin-bottom:54px}
.section-head--center{margin-inline:auto;text-align:center}
.section-head p{margin-top:16px;color:var(--muted)}
.section--dark .section-head p{color:#c6c9cd}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,6vw,80px);align-items:center}
.split--wide{grid-template-columns:1.1fr .9fr}
.split__media{position:relative;border-radius:var(--radius);overflow:hidden;background:#d8d8d6}
.split__media img{width:100%;height:100%;object-fit:cover}
.split__media--tall{aspect-ratio:4/5}
.split__badge{position:absolute;left:20px;bottom:20px;right:20px;background:rgba(11,12,14,.86);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid var(--line-2);border-radius:var(--radius-sm);padding:16px 20px;font-size:.92rem;color:#e3e5e8}
.split__badge strong{display:block;font-family:var(--f-title);font-weight:400;font-size:1.15rem;color:#fff}
.split__text .h2{margin-bottom:22px}
.split__text p{color:#c3c7cc}

/* pilares / tarjetas */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.pillar{padding:34px 30px;border:1px solid var(--line-2);border-radius:var(--radius);background:rgba(16,18,21,.55);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.pillar h3{font-size:1.35rem;margin:18px 0 14px}
.pillar li{position:relative;padding-left:18px;margin-bottom:10px;color:#cdd0d4;font-size:.96rem}
.pillar li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent-light)}
.icon{width:46px;height:46px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:rgba(188,196,204,.1);color:var(--accent-light);flex:none}
.icon svg{width:24px;height:24px}

.card{position:relative;padding:32px 28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);transition:transform .35s var(--ease),border-color .35s var(--ease),background .35s var(--ease);display:flex;flex-direction:column}
.section--alt .card{background:var(--bg)}
.card:hover{transform:translateY(-4px);border-color:var(--line-2);background:var(--surface-2)}
.card__num{position:absolute;top:26px;right:26px;font-family:var(--f-title);font-size:1.05rem;color:#5c636b}
.card h3{font-size:1.22rem;margin:20px 0 10px}
.card p{color:var(--muted);font-size:.95rem;margin:0}

/* servicio detallado */
.service{display:grid;grid-template-columns:90px 1fr 1fr;gap:clamp(24px,4vw,48px);padding:48px 0;border-top:1px solid var(--line)}
.service:last-child{border-bottom:1px solid var(--line)}
.service__num{font-family:var(--f-title);font-size:2.6rem;color:#4d545c;line-height:1}
.service h3{font-size:clamp(1.4rem,2.2vw,1.8rem);margin-bottom:14px}
.service__intro{color:#c3c7cc}
.service__more{color:var(--muted);font-size:.96rem;margin-top:10px}
.checklist li{position:relative;padding-left:30px;margin-bottom:12px;color:#d0d3d7}
.checklist li::before{content:"";position:absolute;left:0;top:.5em;width:16px;height:9px;border-left:2px solid var(--accent-light);border-bottom:2px solid var(--accent-light);transform:rotate(-45deg)}

/* pasos */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;counter-reset:s}
.steps--6{grid-template-columns:repeat(3,1fr)}
.step{position:relative;padding:30px 24px 28px;border:1px solid var(--line-2);border-radius:var(--radius);background:rgba(16,18,21,.6)}
.section:not(.section--dark) .step{background:var(--surface)}
.step__n{font-family:var(--f-title);font-size:2rem;color:var(--accent-light);line-height:1;display:block;margin-bottom:16px}
.step h3{font-size:1.14rem;margin-bottom:12px}
.step p{font-size:.94rem;color:#c3c7cc;margin:0}
.step ul li{font-size:.92rem;color:#c3c7cc;margin-bottom:8px;padding-left:14px;position:relative}
.step ul li::before{content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--accent-light)}

/* etapas riesgo (lista vertical) */
.stages{display:grid;gap:18px}
.stage{display:grid;grid-template-columns:80px 1fr 1.4fr;gap:28px;align-items:start;padding:30px 32px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.stage__n{font-family:var(--f-title);font-size:2.4rem;color:var(--accent-light);line-height:1}
.stage h3{font-size:1.3rem}

/* ventajas */
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.why__item{padding-top:24px;border-top:1px solid var(--line-2)}
.why__item h3{font-size:1.15rem;margin:18px 0 8px}
.why__item p{color:var(--muted);font-size:.95rem;margin:0}

/* cita */
.quote{max-width:900px;margin-inline:auto;text-align:center}
.quote blockquote{margin:0;font-family:var(--f-title);font-size:clamp(1.45rem,2.8vw,2.2rem);line-height:1.4;color:#fff}
.quote cite{display:block;margin-top:22px;font-style:normal;font-size:.8rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent-light)}

/* chips de metodologías */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chips span{padding:8px 16px;border:1px solid var(--line-2);border-radius:999px;font-size:.86rem;color:#d7dade}

/* coaching */
.coach{padding:28px 24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.coach h3{font-size:1.2rem;margin-bottom:14px}
.coach li{font-size:.93rem;color:var(--muted);margin-bottom:6px}

/* equipo */
.team{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.team figure{margin:0;border-radius:var(--radius);overflow:hidden;background:#dcdcda;aspect-ratio:3/4}
.team img{width:100%;height:100%;object-fit:cover;object-position:center 20%;transition:transform .6s var(--ease)}
.team figure:hover img{transform:scale(1.04)}

/* gancho riesgos (home) */
.feature{display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(30px,5vw,70px);align-items:center}
.feature p{color:#d0d3d7}

/* CTA */
.cta{position:relative;isolation:isolate;padding:clamp(90px,10vw,130px) 0;color:#fff;overflow:hidden;background:var(--ink);text-align:center}
.cta::after{content:"";position:absolute;inset:0;z-index:-1;background:rgba(8,9,11,.74)}
.cta h2{font-size:clamp(2rem,3.8vw,3rem);margin-bottom:18px}
.cta p{max-width:680px;margin:0 auto 30px;color:#d3d6da;font-size:1.08rem}
.cta__actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px}

/* contacto */
.contact{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(36px,6vw,80px);align-items:start}
.contact-list{display:grid;gap:18px;margin-top:28px}
.contact-list li{display:flex;flex-direction:column;gap:4px}
.contact-list small{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.ci{display:inline-flex;align-items:center;gap:12px;color:#e6e7e9;transition:color .2s}
a.ci:hover{color:#fff}
.ci svg{width:19px;height:19px;flex:none;color:var(--accent-light)}
.form{padding:clamp(28px,4vw,44px);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.form__grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1/-1}
.field label{font-size:.84rem;font-weight:700;color:#cfd2d6}
.field input,.field textarea{font:inherit;color:#fff;background:var(--bg);border:1px solid var(--line-2);border-radius:var(--radius-sm);padding:13px 15px;transition:border-color .2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent-light)}
.field textarea{min-height:150px;resize:vertical}
.form .btn{margin-top:24px}
.form-alert{display:none;margin-bottom:22px;padding:14px 18px;border-radius:var(--radius-sm);font-size:.95rem}
.form-alert.is-ok{display:block;background:rgba(46,160,90,.15);border:1px solid rgba(46,160,90,.5);color:#bff0cf}
.form-alert.is-err{display:block;background:rgba(200,60,60,.15);border:1px solid rgba(200,60,60,.5);color:#ffd0d0}

/* footer */
.site-footer{background:var(--ink);border-top:1px solid var(--line);padding-block:clamp(52px,6vw,74px) 30px;color:var(--muted);font-size:.95rem}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand img{height:84px;width:auto;mix-blend-mode:lighten;margin-bottom:16px}
.footer-brand p{max-width:300px;margin:0}
.site-footer h4{font-family:var(--f-body);font-size:.76rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.footer-links li{margin-bottom:10px}
.footer-links a{transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-contact li{margin-bottom:12px}
.footer-contact .ci{color:var(--muted)}
.footer-contact a.ci:hover{color:#fff}
.footer-credit{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);text-align:center;font-size:.8rem;color:rgba(255,255,255,.6)}
.footer-credit a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
.footer-credit a:hover{color:rgba(255,255,255,.92)}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}
.no-js .reveal{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* responsive */
@media (max-width:1024px){
  .grid-4,.why,.team{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps--6{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .service{grid-template-columns:70px 1fr}
  .service > :last-child{grid-column:2}
}
@media (max-width:880px){
  .burger{display:block;z-index:2}
  .nav{position:fixed;top:0;right:0;height:100vh;height:100dvh;width:min(320px,84vw);flex-direction:column;align-items:flex-start;gap:6px;padding:100px 30px 30px;background:#121417;border-left:1px solid var(--line);transform:translateX(100%);transition:transform .4s var(--ease);overflow-y:auto}
  .nav.is-open{transform:none}
  .nav a{font-size:1.08rem;padding:10px 0;width:100%}
  .nav a:not(.btn)::after{display:none}
  .nav .nav-cta-desktop{display:none}
  .nav .nav-cta-mobile{display:inline-flex;margin-top:18px;width:auto;padding:12px 24px}
  .split,.split--wide,.contact,.feature{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .stage{grid-template-columns:60px 1fr}
  .stage > :last-child{grid-column:2}
  .brand img{height:62px}
}
@media (max-width:560px){
  .grid-4,.why,.team,.steps,.steps--6,.footer-grid,.form__grid{grid-template-columns:1fr}
  .team{grid-template-columns:1fr 1fr;gap:14px}
  .service{grid-template-columns:1fr;gap:14px}
  .service > :last-child{grid-column:auto}
  .stage{grid-template-columns:1fr;gap:12px;padding:26px 22px}
  .stage > :last-child{grid-column:auto}
  .hero{padding:130px 0 80px}
  .page-hero{padding:150px 0 70px}
  .btn{padding:12px 22px}
}
/* salvavidas: si el observer no corre, revela igual */
.js .reveal:not(.is-in){animation:reveal-failsafe 0s linear 3s forwards}
@keyframes reveal-failsafe{to{opacity:1;transform:none}}