@font-face { font-family: VestaSerif; src: url("assets/fonts/editorial.woff2") format("woff2"); font-weight: 400 600; font-display: swap; }
@font-face { font-family: VestaSans; src: url("assets/fonts/sans.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
:root {
  --paper: #f5f3ef;
  --paper-2: #ebe6dc;
  --ink: #1c1c1a;
  --stone: #ddd4c5;
  --bronce: #a8875c;
  --line: #cec9bf;
  --muted: #68675f;
  --serif: VestaSerif, Georgia, serif;
  --sans: VestaSans, Arial, sans-serif;
  --g: clamp(18px, 3.6vw, 64px);
  --ease: cubic-bezier(.22, 1, .36, 1);
}
* { box-sizing: border-box; }
html { background: var(--paper); }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 300 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; overflow-x: clip; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -.01em; line-height: 1; }
h1 { font-size: clamp(3.4rem, 8vw, 8.6rem); }
h2 { font-size: clamp(2.4rem, 5vw, 5.2rem); }
h3 { font-size: clamp(2.4rem, 4.4vw, 4.6rem); }
em { font-style: italic; color: var(--bronce); }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
img, video { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--bronce); outline-offset: 4px; }
.kicker { font: 400 .68rem/1.5 var(--sans); letter-spacing: .24em; text-transform: uppercase; color: var(--muted); }
.skip { position: fixed; left: -999px; top: 8px; z-index: 99; background: var(--ink); color: var(--paper); padding: 8px 14px; }
.skip:focus { left: 8px; }
.btn, .btn-sec { display: inline-flex; align-items: center; justify-content: center; padding: .95rem 1.6rem; border-radius: 0; font: 400 .72rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; transition: background .4s, color .4s, border-color .4s; }
.btn { background: var(--ink); color: var(--paper); border: 1px solid var(--ink); }
.btn:hover { background: var(--bronce); border-color: var(--bronce); }
.btn-sec { background: transparent; border: 1px solid var(--line); }
.btn-sec:hover { border-color: var(--ink); }

/* ---------- barra ---------- */
.top { position: fixed; z-index: 40; inset: 0 0 auto; display: flex; align-items: center; gap: 2rem; padding: 1.2rem var(--g); color: var(--paper); transition: color .6s, background .6s; }
.top.claro { color: var(--ink); background: linear-gradient(rgba(245, 243, 239, .94), rgba(245, 243, 239, 0)); }
.logo { font: 400 .95rem/1 var(--serif); letter-spacing: .32em; }
.logo span { display: block; font: 400 .52rem/1 var(--sans); letter-spacing: .26em; margin-top: .45rem; opacity: .7; text-transform: uppercase; }
.top nav { margin-left: auto; display: flex; gap: 2rem; align-items: center; font: 400 .68rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; }
.top nav a { opacity: .8; transition: opacity .3s; }
.top nav a:hover { opacity: 1; }
.nav-cta { border: 1px solid currentColor; padding: .7rem 1rem; }
.hora { font: italic 400 1.1rem/1 var(--serif); min-width: 3.6rem; text-align: right; font-variant-numeric: tabular-nums; transition: opacity .5s; }

/* ---------- 1 · luz ---------- */
.luz { position: relative; height: 520vh; background: #1a1714; }
.stage { position: sticky; top: 0; height: 100vh; overflow: hidden; }
.luz .stage { color: var(--paper); }
.still, .cuadro { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cuadro { opacity: 0; }
.velo { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20, 17, 14, .6), rgba(20, 17, 14, .15) 45%, transparent 65%), linear-gradient(0deg, rgba(20, 17, 14, .55), transparent 40%); pointer-events: none; }
.luz-txt { position: absolute; left: var(--g); bottom: 13vh; max-width: 46rem; transition: opacity .9s, transform 1.1s var(--ease); }
.luz-txt .kicker { color: rgba(245, 243, 239, .75); }
.luz-txt h1 { margin: 1.2rem 0 1.6rem; }
[data-lineas] span { display: block; overflow: hidden; }
[data-lineas] span > * , [data-lineas] span { }
.lede { font-size: 1.12rem; color: rgba(245, 243, 239, .82); max-width: 30rem; }
.b { position: absolute; left: var(--g); bottom: 13vh; max-width: 26rem; font: 400 clamp(1.5rem, 2.4vw, 2.3rem)/1.2 var(--serif); opacity: 0; transform: translateY(24px); transition: opacity .9s, transform 1.1s var(--ease); }
.b .kicker { display: block; margin-bottom: 1rem; color: rgba(245, 243, 239, .75); }
.b.on { opacity: 1; transform: none; }
.sol { position: absolute; right: var(--g); bottom: 13vh; width: 120px; height: 60px; margin: 0; border-bottom: 1px solid rgba(245, 243, 239, .4); }
.sol::before { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 60px; border: 1px dashed rgba(245, 243, 239, .3); border-bottom: 0; border-radius: 60px 60px 0 0; }
.sol i { position: absolute; width: 10px; height: 10px; margin: -5px; border-radius: 50%; background: #f3d7a7; box-shadow: 0 0 14px #f3d7a7; left: var(--sx, 0); top: var(--sy, 60px); }

/* ---------- 2 · mirar ---------- */
.mirar { padding: 30vh var(--g) 40vh; text-align: center; }
.mirar h2 { max-width: 16ch; margin: 1.6rem auto 2rem; font-size: clamp(2.8rem, 6.4vw, 7rem); }
.mirar h2 .w { display: inline-block; opacity: .1; filter: blur(4px); transform: translateY(.2em); transition: opacity .7s, filter .7s, transform .9s var(--ease); }
.mirar h2 .w.on { filter: none; transform: none; }
.mirar h2 .w.on { opacity: 1; }
.mirar-p { max-width: 34rem; margin: 0 auto; color: var(--muted); font-size: 1.05rem; }

/* ---------- 3 · trazo ---------- */
.trazo { position: relative; height: 300vh; }
.trazo .stage { background: var(--paper); cursor: none; }
.trazo-foto, .trazo-boceto { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.trazo-boceto { -webkit-mask-image: linear-gradient(90deg, #000 var(--c, 100%), transparent calc(var(--c, 100%) + 6%)), radial-gradient(circle at var(--mx, -999px) var(--my, -999px), transparent 0 var(--rr, 0px), #000 calc(var(--rr, 0px) + 40px)); -webkit-mask-composite: source-in; mask-image: linear-gradient(90deg, #000 var(--c, 100%), transparent calc(var(--c, 100%) + 6%)), radial-gradient(circle at var(--mx, -999px) var(--my, -999px), transparent 0 var(--rr, 0px), #000 calc(var(--rr, 0px) + 40px)); mask-composite: intersect; }
.trazo-linea { position: absolute; top: 50%; bottom: auto; left: var(--c, 100%); transform: translate(-50%, -50%); display: flex; flex-direction: column; align-items: center; gap: .6rem; font: 400 .62rem/1 var(--sans); letter-spacing: .22em; text-transform: uppercase; color: var(--ink); pointer-events: none; }
.trazo-linea i { width: 1px; height: 70vh; background: var(--ink); opacity: .45; }
.trazo-txt { position: absolute; left: var(--g); bottom: 10vh; max-width: 28rem; padding: 1.8rem; background: rgba(245, 243, 239, .86); backdrop-filter: blur(10px); }
.trazo-txt h2 { font-size: clamp(2rem, 3.6vw, 3.6rem); margin: 1rem 0; }
.trazo-txt p:not(.kicker) { color: var(--muted); }

/* ---------- 4 · proyectos ---------- */
.proy-head { padding: 18vh var(--g) 8vh; }
.proy-head h2 { margin-top: 1rem; }
.recorrido { position: relative; height: 480vh; }
.recorrido .stage { background: #1a1714; color: var(--paper); }
.recorrido canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.velo-b { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(20, 17, 14, .82), transparent 46%), linear-gradient(90deg, rgba(20, 17, 14, .55), transparent 45%), linear-gradient(rgba(20, 17, 14, .45), transparent 22%); pointer-events: none; }
.rec-ficha { position: absolute; left: var(--g); bottom: 9vh; max-width: 30rem; }
.rec-ficha .kicker { color: rgba(245, 243, 239, .75); }
.rec-ficha h3 { margin: .9rem 0 1rem; }
.rec-ficha p:not(.kicker) { color: rgba(245, 243, 239, .82); }
.notas { list-style: none; margin: 0; padding: 0; }
.notas li { position: absolute; left: var(--x); top: var(--y); max-width: 15rem; padding: .9rem 1rem 1rem 1.4rem; font-size: .88rem; line-height: 1.45; background: rgba(245, 243, 239, .9); color: var(--ink); backdrop-filter: blur(8px); opacity: 0; transform: translateY(14px); transition: opacity .7s, transform .9s var(--ease); }
.notas li::before { content: ""; position: absolute; left: -18px; top: 1.15rem; width: 9px; height: 9px; border-radius: 50%; background: var(--paper); box-shadow: 0 0 0 5px rgba(245, 243, 239, .3); }
.notas li::after { content: ""; position: absolute; left: -9px; top: 1.45rem; width: 9px; height: 1px; background: var(--paper); }
.notas li b { display: block; font: 400 1.1rem/1.2 var(--serif); margin-bottom: .3rem; }
.notas li.on { opacity: 1; transform: none; }
.rec-barra { position: absolute; right: var(--g); bottom: 9vh; width: 160px; height: 1px; background: rgba(245, 243, 239, .3); }
.rec-barra i { position: absolute; inset: 0; background: var(--paper); transform-origin: left; transform: scaleX(var(--p, 0)); }

/* ---------- 5 · libro ---------- */
.libro { position: relative; height: 560vh; background: var(--paper-2); }
.libro .stage { display: grid; place-content: center; justify-items: center; }
.libro header { position: absolute; left: var(--g); top: 14vh; }
.libro header h2 { margin-top: .8rem; font-size: clamp(2rem, 3.6vw, 3.6rem); }
.tomo { position: relative; width: min(1100px, 86vw); aspect-ratio: 2 / .72; perspective: 2400px; display: grid; grid-template-columns: 1fr 1fr; margin-top: 8vh; box-shadow: 0 50px 80px -50px rgba(40, 30, 20, .55); }
.pag { position: relative; overflow: hidden; background: #fbfaf7; padding: 3.2%; }
.pag img { width: 100%; height: 100%; object-fit: cover; }
.pag.izq { box-shadow: inset -30px 0 40px -30px rgba(0, 0, 0, .25); }
.pag.der { box-shadow: inset 30px 0 40px -30px rgba(0, 0, 0, .25); }
.hojas { position: absolute; z-index: 2; left: 50%; top: 0; width: 50%; height: 100%; transform-style: preserve-3d; pointer-events: none; }
.hoja-l { position: absolute; inset: 0; transform-origin: left center; transform-style: preserve-3d; will-change: transform; }
.hoja-l .f, .hoja-l .b2 { position: absolute; inset: 0; backface-visibility: hidden; background: #fbfaf7; padding: 3.2%; overflow: hidden; }
.hoja-l .b2 { transform: rotateY(180deg); }
.hoja-l img { width: 100%; height: 100%; object-fit: cover; }
.hoja-l .sombra { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgba(0, 0, 0, var(--sh, 0)), transparent 60%); }
.folio { margin-top: 2.2rem; font: italic 400 1.15rem/1 var(--serif); color: var(--muted); }

/* ---------- 6 · materia ---------- */
.materia { padding: 18vh var(--g); }
.materia header { max-width: 42rem; margin-bottom: 7vh; }
.materia h2 { margin: 1rem 0 1.4rem; }
.materia header p:not(.kicker) { color: var(--muted); }
.muestras { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(16px, 2.4vw, 40px); perspective: 1200px; }
.muestra { outline: none; }
.cara { position: relative; aspect-ratio: 3 / 4; overflow: hidden; transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform .5s var(--ease), box-shadow .5s; box-shadow: 0 30px 50px -35px rgba(40, 30, 20, .55); transform-style: preserve-3d; }
.cara img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); }
.rasante { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(420px circle at var(--lx, 50%) var(--ly, 50%), rgba(255, 236, 205, .45), transparent 55%), linear-gradient(calc(var(--la, 90deg)), rgba(0, 0, 0, .28), transparent 55%); mix-blend-mode: soft-light; opacity: 0; transition: opacity .5s; }
.muestra:hover .rasante, .muestra:focus-visible .rasante { opacity: 1; }
.muestra:hover .cara { box-shadow: 0 50px 70px -35px rgba(40, 30, 20, .7); }
.muestra b { display: block; margin-top: 1.2rem; font: 400 1.35rem/1.2 var(--serif); }
.muestra span { color: var(--muted); font-size: .92rem; }

/* ---------- 7 · método ---------- */
.metodo { padding: 18vh var(--g); background: var(--ink); color: var(--paper); }
.metodo header { max-width: 40rem; }
.metodo h2 { margin: 1rem 0 1.4rem; }
.metodo header p:not(.kicker), .metodo .kicker { color: rgba(245, 243, 239, .65); }
.pasos { list-style: none; margin: 8vh 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.pasos::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: rgba(245, 243, 239, .2); }
.pasos::after { content: ""; position: absolute; left: 0; top: 0; height: 1px; width: 100%; background: var(--bronce); transform-origin: left; transform: scaleX(var(--pp, 0)); }
.pasos li { padding: 2rem 2rem 0 0; color: rgba(245, 243, 239, .65); font-size: .95rem; opacity: .35; transition: opacity .6s; }
.pasos li.on { opacity: 1; }
.pasos span { font: italic 400 2.6rem/1 var(--serif); color: var(--bronce); display: block; margin-bottom: 1.2rem; }
.pasos b { display: block; color: var(--paper); font: 400 1.35rem/1.2 var(--serif); margin-bottom: .6rem; }
.faq { margin-top: 10vh; max-width: 54rem; }
.faq details { border-top: 1px solid rgba(245, 243, 239, .2); padding: 1.3rem 0; }
.faq summary { cursor: pointer; font: 400 1.3rem/1.3 var(--serif); list-style: none; display: flex; justify-content: space-between; }
.faq summary::after { content: "+"; font-family: var(--sans); transition: transform .4s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: rgba(245, 243, 239, .65); margin-top: 1rem; }

/* ---------- 8 · diagnóstico ---------- */
.diag { position: relative; padding: 18vh var(--g); overflow: hidden; }
.diag-fondo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .16; filter: grayscale(.3); }
.diag-in { position: relative; display: grid; grid-template-columns: 1fr 1.2fr .8fr; gap: clamp(20px, 3vw, 54px); align-items: start; }
.diag header h2 { margin: 1rem 0 1.4rem; }
.diag header p:not(.kicker) { color: var(--muted); }
.hoja { background: #fbfaf7; padding: 2.2rem; box-shadow: 0 50px 80px -50px rgba(40, 30, 20, .5); }
.avance { height: 2px; background: var(--line); margin-bottom: 1.6rem; }
.avance i { display: block; height: 100%; width: 20%; background: var(--bronce); transition: width .6s var(--ease); }
.campos { margin: 1.4rem 0 2rem; display: grid; gap: 1.2rem; min-height: 16rem; animation: entra .6s var(--ease); }
@keyframes entra { from { opacity: 0; transform: translateX(20px); } }
.campos label { display: grid; gap: .45rem; font-size: .85rem; color: var(--muted); }
.campos select, .campos input { border: 0; border-bottom: 1px solid var(--line); background: transparent; padding: .7rem 0; font-size: 1rem; color: var(--ink); border-radius: 0; }
.opciones { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; }
.opciones label { cursor: pointer; }
.opciones input { position: absolute; opacity: 0; }
.opciones span { display: block; border: 1px solid var(--line); padding: .9rem .6rem; text-align: center; color: var(--ink); font-size: .9rem; transition: border-color .3s, background .3s; }
.opciones input:checked + span { border-color: var(--ink); background: var(--paper-2); }
.opciones input:focus-visible + span { outline: 2px solid var(--bronce); }
.acciones { display: flex; justify-content: space-between; gap: 1rem; }
.resultado h3 { font-size: 2.2rem; margin-bottom: 1rem; }
.resultado ul { padding-left: 1.1rem; color: var(--muted); font-size: .92rem; }
.resultado dl { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem 1.4rem; margin: 1.4rem 0; font-size: .88rem; }
.resultado dt { color: var(--muted); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; }
.resultado dd { margin: 0; }
.estado { display: inline-block; padding: .35rem .7rem; font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; border: 1px solid currentColor; margin-bottom: 1rem; }
.estado.aligned { color: #4c6b43; } .estado.review { color: #9a6b26; } .estado.outside { color: #8e3b2c; }
.coords dl { margin: 1.2rem 0; }
.coords dl div { border-top: 1px solid var(--line); padding: .9rem 0; }
.coords dt { font: 400 1.2rem/1.2 var(--serif); }
.coords dd { margin: .2rem 0 0; color: var(--muted); font-size: .9rem; }
.coords .nota { font-size: .78rem; color: var(--muted); margin-bottom: 1.4rem; }

/* ---------- pie ---------- */
.pie { position: relative; height: 90vh; min-height: 520px; overflow: hidden; color: var(--paper); display: flex; align-items: flex-end; }
.pie img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.pie::before { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(0deg, rgba(20, 17, 14, .82), rgba(20, 17, 14, .1) 60%); }
.pie-in { position: relative; z-index: 2; padding: 0 var(--g) 6vh; width: 100%; display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 2rem; }
.pie-f { font: italic 400 clamp(2.4rem, 5vw, 5rem)/1 var(--serif); grid-column: 1 / -1; order: -1; }
.pie .small { font-size: .78rem; opacity: .75; max-width: 30rem; text-align: right; }

@media (max-width: 900px) {
  .top nav a:not(.nav-cta) { display: none; }
  .hora { display: none; }
  .luz-txt, .b { right: var(--g); }
  .sol { display: none; }
  .trazo-txt { right: var(--g); padding: 1.2rem; }
  .notas li { max-width: 11rem; font-size: .78rem; left: min(var(--x), 52%); }
  .rec-ficha { right: var(--g); }
  .rec-barra { display: none; }
  .tomo { width: 94vw; }
  .libro header { top: 10vh; }
  .muestras { grid-template-columns: 1fr 1fr; }
  .pasos { grid-template-columns: 1fr; }
  .pasos li { padding: 1.6rem 0 0; }
  .diag-in { grid-template-columns: 1fr; }
  .opciones { grid-template-columns: 1fr; }
  .pie-in { grid-template-columns: 1fr; }
  .pie .small { text-align: left; }
}
@media (prefers-reduced-motion: reduce) {
  .b, .notas li, .campos { transition: opacity .3s; animation: none; }
}