/* ============================================================
   Niven Mark — sitio de marca
   Carbón #20211E · Crema #F4F0E7 · Champaña #C9B896
   Serif editorial para titulares, sans del sistema para el resto.
   Sin dependencias ni peticiones externas.
   ============================================================ */

:root{
  --coal:#20211E;--coal-2:#2A2B27;--coal-3:#35362F;
  --cream:#F4F0E7;--cream-2:#EBE5D8;--cream-3:#DED6C6;
  --champ:#C9B896;--champ-2:#DCCFB0;
  --ink:#20211E;--ink-soft:#5C594F;
  --bone:#F4F0E7;--bone-soft:#C8C1B2;
  --line-dark:rgba(32,33,30,.16);--line-light:rgba(244,240,231,.18);
  --sans:"Avenir Next","Helvetica Neue",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  --serif:ui-serif,"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --gut:clamp(18px,5vw,96px);
  --maxw:1440px;
  --head-h:64px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;background:var(--cream)}
body{
  margin:0;background:var(--cream);color:var(--ink);
  font-family:var(--sans);font-size:clamp(16px,1.05vw,17.5px);line-height:1.6;
  overflow-x:clip;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
h1,h2,h3{margin:0;font-weight:400;line-height:1.05;letter-spacing:-.02em}
p,ol,ul,figure{margin:0}
a{color:inherit}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.dark :focus-visible,.hero-panel :focus-visible{outline-color:var(--champ-2)}
[id]{scroll-margin-top:calc(var(--head-h) + 8px)}

.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
.skip{
  position:absolute;left:12px;top:-120px;z-index:100;
  background:var(--coal);color:var(--cream);padding:12px 18px;text-decoration:none;font-weight:500;
}
.skip:focus{top:12px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.label{font-size:.72rem;line-height:1.5;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-soft)}
.dark .label{color:var(--bone-soft)}
.dark{background:var(--coal);color:var(--bone)}

/* ---------- Cabecera ---------- */
.site-head{position:sticky;top:0;z-index:50;background:rgba(244,240,231,.94);border-bottom:1px solid var(--line-dark)}
@supports (backdrop-filter:blur(8px)){.site-head{background:rgba(244,240,231,.86);backdrop-filter:saturate(120%) blur(10px)}}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:var(--head-h)}
.brand{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}
.brand .logo-h{width:clamp(200px,17vw,244px)}
.brand .logo-m{display:none;width:44px}
.nav ul{display:flex;gap:clamp(22px,3vw,44px);list-style:none;margin:0;padding:0}
.nav a{
  display:inline-flex;align-items:center;min-height:44px;text-decoration:none;
  font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-soft);
}
.nav a:hover{color:var(--ink)}
.nav-toggle{
  display:none;align-items:center;gap:10px;min-height:44px;padding:0 16px;cursor:pointer;
  background:transparent;border:1px solid var(--line-dark);border-radius:999px;color:var(--ink);
  font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;
}
.nav-toggle .bars{position:relative;display:inline-block;width:16px;height:9px}
.nav-toggle .bars::before,.nav-toggle .bars::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;transition:transform .25s var(--ease);
}
.nav-toggle .bars::before{top:0}
.nav-toggle .bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .bars::before{transform:translateY(3.75px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bars::after{transform:translateY(-3.75px) rotate(-45deg)}

@media (max-width:760px){
  .js .nav-toggle{display:inline-flex}
  .js .nav{position:absolute;top:100%;left:0;right:0;background:var(--cream);border-bottom:1px solid var(--line-dark);padding:4px var(--gut) 18px}
  .js .nav:not([data-open="true"]){display:none}
  .js .nav ul{flex-direction:column;gap:0}
  .js .nav li+li{border-top:1px solid var(--line-dark)}
  .js .nav a{display:flex;min-height:56px;font-family:var(--serif);font-size:1.3rem;letter-spacing:0;text-transform:none;color:var(--ink)}
}
@media (max-width:419px){
  .site-head .brand .logo-h{display:none}
  .site-head .brand .logo-m{display:block}
}

/* ---------- Héroe partido ---------- */
.hero{display:grid;grid-template-columns:minmax(0,46fr) minmax(0,54fr);min-height:clamp(640px,50vw,720px)}
.hero-panel{display:flex;align-items:center;background:var(--coal);color:var(--bone)}
.hero-panel .inner{width:100%;padding:clamp(40px,6vw,88px) clamp(28px,5vw,80px) clamp(40px,6vw,88px) var(--gut)}
.hero-logo{width:clamp(180px,16vw,236px)}
.hero-panel .label{margin-top:clamp(28px,3.4vw,44px);color:var(--champ)}
.hero h1{font-family:var(--serif);font-size:clamp(2.3rem,3.6vw,3.6rem);line-height:1.04;letter-spacing:-.03em;margin-top:16px;max-width:none}
.hero h1 span,.hero h1 em{display:block}
.hero h1 em{font-style:italic;color:var(--champ-2)}
.hero-lede{margin-top:clamp(16px,1.8vw,24px);max-width:34ch;color:var(--bone-soft);font-size:clamp(1.02rem,1.2vw,1.15rem)}
.cta{
  display:inline-flex;align-items:center;gap:14px;margin-top:clamp(24px,2.8vw,36px);min-height:50px;padding:0 26px;
  border:1px solid var(--champ);border-radius:999px;text-decoration:none;
  font-size:.76rem;letter-spacing:.22em;text-transform:uppercase;color:var(--bone);
  transition:background-color .3s,color .3s;
}
.cta:hover{background:var(--champ);color:var(--coal)}
.cta svg{width:12px;height:12px;flex:none}
.hero-media{position:relative;overflow:hidden;background:#E8E1D4;display:grid;place-items:center;padding:clamp(20px,3vw,44px) clamp(20px,3vw,44px) clamp(44px,5vw,64px)}
.hero-media picture{display:contents}
.hero-media img{width:100%;height:100%;object-fit:contain;object-position:50% 50%}
.hero .hero-cap{
  position:absolute;right:clamp(14px,2vw,28px);bottom:clamp(12px,1.6vw,22px);margin:0;
  padding:8px 12px;background:rgba(244,240,231,.9);color:var(--ink);font-size:.72rem;letter-spacing:.2em;
}
@media (max-width:1023px){
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-media{order:-1;aspect-ratio:4/3;padding:0;display:block}
  .hero-media img{object-fit:cover;object-position:60% 56%}
  .hero-panel .inner{padding:clamp(28px,6vw,48px) var(--gut) clamp(40px,8vw,64px)}
  .hero-logo{width:clamp(160px,42vw,200px)}
  .hero-panel .label{margin-top:22px}
  .hero h1{font-size:clamp(2.05rem,7.6vw,3rem);margin-top:12px;max-width:none}
  .hero-lede{margin-top:12px}
  .cta{margin-top:22px}
}

/* ---------- Secciones ---------- */
.section{padding-block:clamp(72px,9vw,136px)}
.section h2{font-family:var(--serif);font-size:clamp(1.9rem,3.2vw,3rem);letter-spacing:-.025em;margin-top:14px;max-width:22ch}
.section h2 em{font-style:italic;color:var(--champ)}
.dark.section h2 em{color:var(--champ-2)}
.light.section h2 em{color:#8B7A52}

/* Qué construimos */
.statement{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:24px clamp(24px,4vw,64px);align-items:start}
.statement h2{font-size:clamp(2rem,3.6vw,3.4rem);line-height:1.1;max-width:20ch;margin-top:0}
.statement .text{align-self:end;max-width:44ch;color:var(--ink-soft);font-size:clamp(1.02rem,1.2vw,1.15rem)}
.criteria{list-style:none;padding:0;margin:clamp(44px,5vw,72px) 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 clamp(20px,3vw,48px);border-top:1px solid var(--ink)}
.criteria li{padding-top:clamp(18px,2vw,26px);display:grid;grid-template-columns:2.6rem minmax(0,1fr);gap:2px 12px}
.criteria .n{font-family:var(--serif);font-style:italic;font-size:1.05rem;color:#8B7A52;grid-row:1 / span 2;padding-top:.2rem}
.criteria h3{font-family:var(--serif);font-size:clamp(1.3rem,1.8vw,1.6rem);line-height:1.15}
.criteria p{color:var(--ink-soft);max-width:30ch}
@media (max-width:820px){
  .statement{grid-template-columns:1fr}
  .criteria{grid-template-columns:1fr;gap:0}
  .criteria li+li{border-top:1px solid var(--line-dark);margin-top:clamp(18px,2vw,26px)}
}

/* Estudio de materiales */
.materials{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);grid-template-rows:auto auto;gap:0 clamp(28px,4vw,72px);align-items:start}
.materials-text{grid-column:1;grid-row:1}
.materials .stage{grid-column:2;grid-row:1 / span 2}
.materials-text .intro{margin-top:18px;max-width:36ch;color:var(--bone-soft)}
.thumbs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:clamp(28px,3vw,40px)}
.thumb{
  -webkit-appearance:none;appearance:none;cursor:pointer;display:grid;gap:10px;padding:0;
  background:none;border:0;color:var(--bone-soft);text-align:left;
}
.thumb img{width:100%;aspect-ratio:4/5;object-fit:cover;border:1px solid var(--line-light);transition:border-color .3s,opacity .3s;opacity:.72}
.thumb span{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase}
.thumb:hover img{opacity:1}
.thumb[aria-checked="true"]{color:var(--bone)}
.thumb[aria-checked="true"] img{opacity:1;border-color:var(--champ);box-shadow:0 0 0 1px var(--champ)}
.materials-note{grid-column:1;grid-row:2;margin-top:clamp(24px,3vw,36px);font-size:.82rem;color:var(--bone-soft)}
.stage{position:relative;overflow:hidden;aspect-ratio:4/5;background:var(--coal-2)}
.stage .panel{position:absolute;inset:0;opacity:0;transition:opacity .6s var(--ease)}
.stage .panel.is-on{opacity:1}
.stage .panel img{width:100%;height:100%;object-fit:cover}
.stage-cap{position:absolute;left:0;right:0;bottom:0;padding:14px clamp(14px,2vw,24px);background:linear-gradient(to top,rgba(32,33,30,.78),rgba(32,33,30,0));color:var(--cream)}
@media (max-width:900px){
  .materials{grid-template-columns:1fr;grid-template-rows:none}
  .materials-text,.materials .stage,.materials-note{grid-column:1;grid-row:auto}
  .materials .stage{margin-top:22px;aspect-ratio:4/5;max-height:72vh}
  .materials-note{margin-top:18px}
  .thumbs{margin-top:22px}
}
@media (max-width:420px){
  .thumb img{aspect-ratio:1/1}
  .thumb span{font-size:.64rem;letter-spacing:.14em}
}

/* Nuestro avance */
.progress{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,4vw,80px);align-items:center}
.progress-media{overflow:hidden;background:var(--cream-3)}
.progress-media img{width:100%;aspect-ratio:656/900;object-fit:cover}
.points{list-style:none;padding:0;margin:clamp(30px,3.6vw,52px) 0 0;display:grid;gap:clamp(22px,2.6vw,34px)}
.points li{display:grid;grid-template-columns:2.6rem minmax(0,1fr);gap:4px 14px;border-top:1px solid var(--line-dark);padding-top:clamp(16px,2vw,24px)}
.points .n{font-family:var(--serif);font-style:italic;font-size:1.05rem;color:#8B7A52;grid-row:1 / span 2;padding-top:.2rem}
.points h3{font-family:var(--serif);font-size:clamp(1.3rem,1.8vw,1.65rem);line-height:1.15}
.points p{color:var(--ink-soft);max-width:44ch}
@media (max-width:900px){
  .progress{grid-template-columns:1fr}
  .progress-media{max-width:460px}
}

/* Lo que viene */
.future{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(28px,4vw,80px);align-items:end}
.future .goal{margin-top:clamp(20px,2.4vw,32px);font-family:var(--serif);font-size:clamp(1.4rem,2.4vw,2.1rem);line-height:1.3;letter-spacing:-.015em;max-width:30ch}
.future .intent{margin-top:18px;color:var(--bone-soft);max-width:44ch}
.future-mark{justify-self:end;width:clamp(160px,18vw,260px);opacity:.9}
@media (max-width:900px){
  .future{grid-template-columns:1fr}
  .future-mark{justify-self:start;width:160px;order:-1}
}

/* ---------- Pie ---------- */
.site-foot{border-top:1px solid var(--line-dark);padding-block:clamp(40px,5vw,64px)}
.foot-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.foot-row .logo-h{width:clamp(180px,16vw,220px)}
.foot-meta{display:flex;flex-wrap:wrap;gap:8px 28px;font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}
.foot-meta .dev{color:#8B7A52}

/* ---------- Movimiento ---------- */
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
}