/* Cauce — estudio web & growth para pequeños negocios (Madrid)
   Sistema: papel #f4f1ea · tinta #17211f · agua #206b6b · arena #cdb492
   Tipografía: Bricolage Grotesque (display) · Hanken Grotesk (texto)
   Look comprometido en claro (marca). Fondo y colores siempre explícitos. */

:root{
  --papel:#f4f1ea; --papel-2:#ece7dc; --papel-3:#e3ddce; --blanco:#fbfaf6;
  --tinta:#17211f; --tinta-2:#243230; --tinta-suave:#4c5a57;
  --agua:#1f6b6b; --agua-osc:#164f4f; --arena:#cdb492;
  --linea:#d9d2c2; --ok:#1f6b4a; --error:#b23b2e;
  --max:1120px; --mx:56px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--papel);color:var(--tinta);font-family:"Hanken Grotesk",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-family:"Bricolage Grotesque","Hanken Grotesk",system-ui,sans-serif;color:var(--tinta);line-height:1.05;font-weight:600;letter-spacing:-.015em}
h1{font-size:clamp(2.6rem,6.5vw,4.6rem)}
h2{font-size:clamp(1.9rem,4vw,2.7rem)}
h3{font-size:1.3rem;letter-spacing:-.01em}
p{max-width:60ch}
img{max-width:100%;display:block}
a{color:inherit}
section[id]{scroll-margin-top:92px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--mx)}
.section{padding:100px 0;position:relative}
.section+.section{border-top:1px solid var(--linea)}
.eyebrow{font-size:.74rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--agua)}
.lead{max-width:56ch;color:var(--tinta-suave);font-size:1.08rem}

/* la línea del cauce — motivo que recorre la página */
.cauce-line{position:absolute;left:0;width:100%;height:40px;overflow:visible;pointer-events:none;opacity:.5}
.cauce-line svg{width:100%;height:100%}
.cauce-line path{fill:none;stroke:var(--agua);stroke-width:1.5;stroke-linecap:round}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;font-size:.82rem;font-weight:600;letter-spacing:.03em;padding:15px 28px;border:1px solid var(--tinta);background:var(--tinta);color:var(--papel);text-decoration:none;cursor:pointer;transition:background .18s,color .18s,transform .18s}
.btn:hover{background:var(--tinta-2)}
.btn--ghost{background:transparent;color:var(--tinta)}
.btn--ghost:hover{background:var(--papel-2)}
.btn--agua{background:var(--agua);border-color:var(--agua);color:#fff}
.btn--agua:hover{background:var(--agua-osc);border-color:var(--agua-osc)}
.btn--block{width:100%}
.arrow{transition:transform .18s}
.btn:hover .arrow{transform:translateX(3px)}

.site-header{position:fixed;top:0;left:0;width:100%;z-index:50;background:rgba(244,241,234,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--linea)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--tinta);font-family:"Bricolage Grotesque",sans-serif;font-weight:600;font-size:1.35rem;letter-spacing:-.02em}
.brand svg{width:22px;height:22px;flex:none}
.nav{display:flex;gap:26px}
.nav a{font-size:.85rem;font-weight:500;color:var(--tinta-suave);text-decoration:none;transition:color .15s}
.nav a:hover{color:var(--tinta)}
.header-cta{display:flex;align-items:center;gap:16px}
.nav-toggle{display:none;background:none;border:0;color:var(--tinta);font-size:1.6rem;cursor:pointer}
main{padding-top:76px}

.hero{max-width:var(--max);margin:0 auto;padding:72px var(--mx) 88px;position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center}
.hero h1{max-width:15ch;text-wrap:balance}
.hero .tag{display:block;font-family:"Bricolage Grotesque",sans-serif;font-weight:400;font-size:clamp(1.35rem,2.4vw,1.9rem);color:var(--agua);margin-top:14px;letter-spacing:-.01em}
.hero p{font-size:1.1rem;color:var(--tinta-suave);margin:24px 0 30px;max-width:44ch}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{margin-top:36px;display:flex;gap:24px;flex-wrap:wrap;font-size:.83rem;color:var(--tinta-suave)}
.hero-meta b{color:var(--tinta);font-weight:600}

/* muestra de trabajo en el hero — 3 casos en marco de navegador, en cascada */
.hero-show{position:relative;height:440px}
.mock{position:absolute;width:290px;background:var(--blanco);border:1px solid var(--linea);box-shadow:0 22px 45px -20px rgba(23,33,31,.4);overflow:hidden}
.mock .bar{height:24px;background:var(--papel-2);border-bottom:1px solid var(--linea);display:flex;align-items:center;gap:5px;padding:0 10px}
.mock .bar i{width:7px;height:7px;border-radius:999px;background:var(--linea)}
.mock .win{aspect-ratio:4/3;overflow:hidden}
.mock .win img{width:100%;height:100%;object-fit:cover;object-position:top}
.mock--1{right:44px;top:0;transform:rotate(-2.5deg);z-index:1}
.mock--2{right:0;top:78px;transform:rotate(1.5deg);z-index:3}
.mock--3{right:70px;top:168px;transform:rotate(-1deg);z-index:2;width:250px}
.mock .cap{position:absolute;left:10px;bottom:8px;background:rgba(23,33,31,.82);color:#fff;font-size:.66rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:3px 8px}

.serv{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;margin-top:44px;background:var(--linea);border:1px solid var(--linea)}
.serv article{background:var(--papel);padding:30px 26px}
.serv h3{margin-bottom:8px}
.serv p{font-size:.93rem;color:var(--tinta-suave)}
.serv .precio{margin-top:14px;font-size:.82rem;font-weight:600;color:var(--agua)}
.serv-note{margin-top:22px;font-size:.9rem;color:var(--tinta-suave)}

.casos{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:44px}
.caso{border:1px solid var(--linea);background:var(--blanco);display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:border-color .18s,transform .18s}
.caso:hover{border-color:var(--agua);transform:translateY(-3px)}
.caso .shot{aspect-ratio:4/3;overflow:hidden;background:var(--papel-2);border-bottom:1px solid var(--linea)}
.caso .shot img{width:100%;height:100%;object-fit:cover;object-position:top}
.caso .body{padding:20px 22px 24px}
.caso .kind{font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--agua)}
.caso h3{margin:6px 0 6px}
.caso p{font-size:.9rem;color:var(--tinta-suave)}
.caso .go{margin-top:14px;font-size:.82rem;font-weight:600;color:var(--tinta);display:inline-flex;gap:6px;align-items:center}

/* precios */
.precios{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.plan{border:1px solid var(--linea);background:var(--blanco);padding:28px 26px}
.plan--dest{border-color:var(--agua);border-width:2px;position:relative}
.plan--dest::before{content:"Más habitual";position:absolute;top:-11px;left:24px;background:var(--agua);color:#fff;font-size:.66rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:3px 10px}
.plan h3{margin-bottom:6px}
.plan .desde{font-size:.95rem;color:var(--tinta-suave)}
.plan .desde b{font-family:"Bricolage Grotesque",sans-serif;font-size:1.6rem;color:var(--tinta);letter-spacing:-.02em}
.plan .para{font-size:.86rem;color:var(--tinta-suave);margin:8px 0 16px}
.plan ul{list-style:none;display:grid;gap:9px}
.plan li{font-size:.9rem;color:var(--tinta-suave);padding-left:18px;position:relative}
.plan li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;background:var(--agua);border-radius:999px}

/* quién — puntos */
.quien-puntos{list-style:none;display:grid;gap:14px;margin:18px 0}
.quien-puntos li{padding-left:20px;position:relative;color:var(--tinta-suave)}
.quien-puntos li::before{content:"";position:absolute;left:0;top:10px;width:9px;height:2px;background:var(--arena)}
.quien-puntos b{color:var(--tinta)}

/* faq */
.faq{margin-top:36px;border-top:1px solid var(--linea)}
.faq details{border-bottom:1px solid var(--linea)}
.faq summary{cursor:pointer;padding:18px 0;font-family:"Bricolage Grotesque",sans-serif;font-weight:600;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--agua);font-size:1.3rem;font-weight:400;flex:none}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 20px;color:var(--tinta-suave);font-size:.94rem;max-width:66ch}

.proceso{background:var(--papel-2)}
.pasos{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px;counter-reset:p}
.paso{position:relative;padding-top:28px}
.paso::before{counter-increment:p;content:"0" counter(p);position:absolute;top:0;left:0;font-family:"Bricolage Grotesque",sans-serif;font-weight:600;color:var(--arena);font-size:1rem}
.paso h3{font-size:1.05rem;margin-bottom:6px}
.paso p{font-size:.9rem;color:var(--tinta-suave)}
.proceso .fine{margin-top:28px;font-size:.9rem;color:var(--tinta-suave)}
.proceso .fine b{color:var(--tinta)}

.quien{display:grid;grid-template-columns:1fr 1.3fr;gap:48px;align-items:start}
.quien .card{background:var(--blanco);border:1px solid var(--linea);padding:26px}
.quien .card b{font-family:"Bricolage Grotesque",sans-serif}
.quien p+p{margin-top:14px}
.quien p{color:var(--tinta-suave)}

.contacto-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;margin-top:12px}
.datos h4{font-size:.75rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--tinta-suave);margin-bottom:4px}
.datos>div{margin-bottom:22px}
.datos a{color:var(--agua);text-decoration:none}
.datos a:hover{text-decoration:underline}
form{display:grid;gap:14px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:grid;gap:5px}
label{font-size:.72rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--tinta-suave)}
input,select,textarea{font:inherit;padding:12px 14px;background:var(--blanco);border:1px solid var(--linea);color:var(--tinta);border-radius:0}
input:focus,select:focus,textarea:focus{outline:2px solid var(--agua);outline-offset:1px;border-color:var(--agua)}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.82rem;color:var(--tinta-suave);text-transform:none;letter-spacing:0;font-weight:400}
.consent input{margin-top:3px}
.consent a{color:var(--agua)}
.form-msg{padding:12px 14px;font-size:.9rem;display:none}
.form-msg.ok{display:block;background:rgba(31,107,74,.12);color:var(--ok)}
.form-msg.err{display:block;background:rgba(178,59,46,.1);color:var(--error)}
.hp{position:absolute;left:-9999px}

.site-footer{background:var(--tinta);color:#cdd6d3;padding:56px 0}
.site-footer .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
.site-footer .brand{color:var(--papel);margin-bottom:10px}
.site-footer .brand svg path{stroke:var(--arena)}
.site-footer p{font-size:.85rem;color:#9fb0ac;max-width:36ch}
.site-footer a{display:block;font-size:.8rem;font-weight:500;color:#cdd6d3;text-decoration:none;padding:5px 0}
.site-footer a:hover{color:#fff}

.mobile-bar{display:none}
.cookie{position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--tinta);color:#dfe6e4;padding:18px var(--mx);display:none;gap:14px;align-items:center;flex-wrap:wrap;justify-content:center}
.cookie.show{display:flex}
.cookie p{font-size:.85rem;color:#b9c6c3;max-width:none}
.cookie a{color:#fff}
.cookie .btn{padding:9px 20px;font-size:.8rem}
.cookie .btn--ghost{color:#fff;border-color:#fff}

.legal{max-width:740px;margin:0 auto;padding:132px var(--mx) 96px}
.legal h1{font-size:2.4rem;margin-bottom:6px}
.legal h2{font-size:1.35rem;margin:32px 0 8px}
.legal p,.legal li{color:var(--tinta-suave);font-size:.95rem;max-width:none}
.legal ul{margin:8px 0 8px 22px}
.legal .updated{font-size:.8rem;color:var(--tinta-suave);margin-bottom:22px}
.legal a{color:var(--agua)}

@media (max-width:900px){
  :root{--mx:20px}
  .nav,.header-cta .btn{display:none}
  .nav-toggle{display:block}
  .nav.open{display:flex;position:absolute;top:76px;left:0;width:100%;flex-direction:column;background:var(--papel);border-bottom:1px solid var(--linea);padding:8px 20px 18px}
  .nav.open a{padding:12px 0;font-size:.95rem}
  .hero{padding:36px 20px 52px;grid-template-columns:1fr;gap:36px}
  .serv,.casos,.pasos,.precios,.contacto-grid,.quien,.row{grid-template-columns:1fr}
  .casos{gap:18px}
  .hero-show{height:auto;display:flex;gap:10px}
  .mock,.mock--1,.mock--2,.mock--3{position:static;transform:none;width:33.333%;box-shadow:0 10px 24px -12px rgba(23,33,31,.35)}
  .mock .cap{display:none}
  .site-footer .wrap{grid-template-columns:1fr 1fr}
  main{padding-bottom:62px}
  .mobile-bar{display:flex;position:fixed;bottom:0;left:0;width:100%;z-index:55;background:var(--agua);height:58px}
  .mobile-bar a{flex:1;display:flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;font-weight:600;font-size:.88rem}
  .mobile-bar a+a{border-left:1px solid rgba(255,255,255,.3)}
  .cookie{padding:14px 20px}
}
@media (max-width:560px){ .site-footer .wrap{grid-template-columns:1fr} }
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}