/* Text-led project collection. Shared navigation stays in the site stylesheet. */
:root{--ink:#1e1e1b;--paper:#f3efe5;--line:rgba(30,30,27,.2);--sage:#5d7559;--sage-soft:#e9ecdf;--rule:#cfc3b1}
body{background:var(--paper)}.site-header{position:relative}.site-header .brand-logo{width:clamp(188px,19vw,330px);height:auto}
/* overflow-x:clip deja que el fondo del hero ocupe todo el ancho sin crear scroll horizontal. */
#contenido{padding:0 0 70px;overflow-x:clip}
.kicker{font:600 11px/1.6 var(--sans);letter-spacing:.13em;text-transform:uppercase;color:var(--sepia);margin:0 0 20px}

/* Hero: franja a todo el ancho con la ilustración a la derecha y el texto sobre papel a la izquierda. */
.hub-hero{position:relative;isolation:isolate;min-height:clamp(400px,34vw,480px);padding-top:62px;padding-bottom:58px;display:flex;flex-direction:column;justify-content:center}
.hub-hero::before{content:"";position:absolute;z-index:-1;top:0;bottom:0;left:calc(50% - 50vw);right:calc(50% - 50vw);background:linear-gradient(90deg,rgba(243,239,229,.96) 0%,rgba(243,239,229,.9) 34%,rgba(243,239,229,.45) 52%,rgba(243,239,229,0) 64%),url('../img/proyectos%20educativos%20katadoku%20hero.webp?v=20261020-1') right center/cover no-repeat,#efe5d4;border-bottom:1px solid #e2d7c4}
.hub-hero>*{max-width:600px}
.hub-hero h1{font:400 clamp(44px,5.2vw,68px)/1.04 var(--serif);letter-spacing:-.035em;margin:0 0 22px}
.hero-lead{font:400 clamp(25px,2.9vw,36px)/1.2 var(--serif);color:var(--green);margin:0 0 24px}
.hero-description{font:500 17px/1.7 var(--sans);margin:0 0 16px;color:#33302a}
.hero-practical{font:14px/1.75 var(--sans);color:#5f574b;margin:0}
.hero-link{display:inline-flex;gap:22px;align-items:center;font:600 14px/1.5 var(--sans);border-bottom:1px solid #a5ad9e;padding-bottom:6px;width:max-content;max-width:100%}.hero-link:hover{color:var(--sepia)}

/* Cabeceras de sección con línea inferior, como separador editorial. */
.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:25px;margin:0;padding-bottom:22px;border-bottom:1px solid var(--rule)}
.section-heading h2{font:400 clamp(28px,3.1vw,38px)/1.15 var(--serif);margin:0;letter-spacing:-.02em;flex-shrink:0}
.section-heading p{font:13px/1.6 var(--sans);color:var(--sepia);margin:0;text-align:right}
.projects-section{padding-top:52px}

/* Proyectos: filas editoriales (índice | contenido | acción), sin tarjetas ni imágenes. */
.project-entry{display:grid;grid-template-columns:170px minmax(0,660px) auto;justify-content:start;gap:44px 56px;padding:42px 0 44px;border-bottom:1px solid var(--rule)}
.entry-number{display:block;font:400 clamp(48px,5vw,62px)/.9 var(--serif);letter-spacing:-.02em;color:var(--sage);padding-bottom:18px;margin-bottom:16px;border-bottom:1px solid var(--rule)}
.project-index p{font:600 13px/1.4 var(--sans);color:var(--ink);margin:0 0 5px}
.entry-format{font:13px/1.5 var(--sans);color:var(--sepia)}
.programme-label{font:500 12px/1.5 var(--sans);color:var(--sepia);margin:0 0 4px}
.project-content h3{font:400 clamp(28px,2.9vw,36px)/1.12 var(--serif);letter-spacing:-.015em;margin:0 0 10px}
.project-content h3 a:hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px}
.project-question{font:400 clamp(18px,1.7vw,21px)/1.35 var(--serif);margin:0 0 14px;color:var(--green)}
.project-practical{font:500 12px/1.6 var(--sans);letter-spacing:.02em;color:var(--sepia);margin:0 0 14px}
.project-description{max-width:640px;font:15px/1.75 var(--sans);color:#4a453d;margin:0 0 22px}
.project-start{margin:0 0 14px;display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;font:13px/1.6 var(--sans)}
.project-start dt{color:var(--sepia)}
.project-start dd{margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px}
.project-start a{display:inline-block;padding:3px 10px;border-radius:3px;background:#e9e1d1;color:var(--ink);transition:background .15s}
.project-start a:hover{background:#dfd4bf}
.project-start dd>span{color:var(--sepia);font-size:12px}
.project-outcome{font:13px/1.7 var(--sans);margin:0;color:#5c564b}
.project-outcome strong{font-weight:600;color:var(--sepia)}
.project-action{align-self:center;display:flex;justify-content:flex-start}
.project-link{display:inline-flex;justify-content:space-between;align-items:center;gap:18px;min-width:172px;padding:12px 16px;border:1px solid #52634d;border-radius:4px;color:#344a38;background:var(--sage-soft);font:600 13px/1.5 var(--sans);transition:background .15s,border-color .15s,color .15s}
.project-link span{transition:transform .15s}
.project-link:hover{background:#dde4d2;border-color:#344a38}.project-link:hover span{transform:translateX(3px)}

/* Del reto a la investigación: tres pasos con su icono. */
.how-use{padding-top:64px}
.use-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px;list-style:none;padding:0;margin:30px 0 0}
.use-grid li{display:grid;grid-template-columns:80px minmax(0,1fr);column-gap:18px;align-content:start}
.use-grid li::before{content:"";grid-row:1/span 3;width:80px;height:72px;background:center/contain no-repeat}
.use-grid li:nth-child(1)::before{background-image:url('../img/icon-opciones.webp')}
.use-grid li:nth-child(2)::before{background-image:url('../img/icon-caso.webp')}
.use-grid li:nth-child(3)::before{background-image:url('../img/icon-solucion.webp')}
.use-number{font:600 12px/1.4 var(--sans);letter-spacing:.06em;color:var(--sage)}
.use-grid h3{font:400 24px/1.2 var(--serif);margin:6px 0 10px}
.use-grid p{font:14px/1.7 var(--sans);color:#514b43;margin:0}
.back-aula{margin:42px 0 0}
.back-aula a{display:inline-flex;align-items:center;gap:18px;padding:13px 20px;border-radius:4px;background:#344a38;color:var(--paper);font:600 14px/1.5 var(--sans);transition:background .15s}
.back-aula a:hover{background:#2a3c2d}
#contenido a:focus-visible{outline:3px solid #931d30;outline-offset:5px}

/* Portátil y tableta. */
@media(max-width:1000px){
  .hub-hero>*{max-width:500px}
  .hub-hero::before{background:linear-gradient(90deg,rgba(243,239,229,.97) 0%,rgba(243,239,229,.92) 45%,rgba(243,239,229,.5) 65%,rgba(243,239,229,.1) 80%),url('../img/proyectos%20educativos%20katadoku%20hero.webp?v=20261020-1') right -150px center/cover no-repeat,#efe5d4}
  .project-entry{grid-template-columns:130px minmax(0,1fr);gap:20px 32px}
  .project-action{grid-column:2;justify-content:flex-start}
  .section-heading{align-items:flex-start;flex-direction:column;gap:8px}.section-heading p{text-align:left}
  .use-grid{gap:28px}
  .use-grid li{grid-template-columns:72px minmax(0,1fr)}.use-grid li::before{width:72px;height:65px}
}

/* Tableta estrecha y móvil: la ilustración pasa a una banda inferior para no tapar el texto. */
@media(max-width:820px){
  .hub-hero{min-height:0;padding-top:42px;padding-bottom:230px;justify-content:flex-start}
  .hub-hero>*{max-width:none}
  .hub-hero::before{background:linear-gradient(180deg,var(--paper) 0,var(--paper) calc(100% - 245px),rgba(243,239,229,0) calc(100% - 165px)),url('../img/proyectos%20educativos%20katadoku%20hero.webp?v=20261020-1') 74% 100%/auto 250px no-repeat,#efe5d4}
  .use-grid{grid-template-columns:1fr;gap:26px}
  .use-grid li{max-width:560px}
}

@media(max-width:650px){
  .container{width:calc(100% - 36px)}
  .hub-hero{padding-top:34px;padding-bottom:225px}
  .hub-hero::before{background:linear-gradient(180deg,var(--paper) 0,var(--paper) calc(100% - 220px),rgba(243,239,229,0) calc(100% - 150px)),url('../img/proyectos%20educativos%20katadoku%20hero.webp?v=20261020-1') 76% 100%/auto 225px no-repeat,#efe5d4}
  .hub-hero h1{margin-bottom:16px}
  .hero-lead{margin-bottom:18px}
  .hero-description{font-size:16px}.hero-practical{font-size:13px}
  .projects-section{padding-top:40px}
  .section-heading h2{font-size:29px}
  .project-entry{display:block;padding:30px 0 32px}
  .project-index{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 12px;margin-bottom:16px}
  .entry-number{font-size:38px;padding:0 4px 0 0;margin:0;border:0}
  .project-index p{margin:0}
  .project-content h3{font-size:29px}
  .project-question{font-size:18px}
  .project-description{font-size:14px}
  .project-start{display:block}.project-start dt{margin-bottom:6px}
  .project-action{margin-top:24px}
  .project-link{width:fit-content}
  .how-use{padding-top:44px}
  .use-grid li{grid-template-columns:56px minmax(0,1fr);column-gap:14px}
  .use-grid li::before{width:56px;height:51px}
  .use-grid h3{font-size:22px}
  .back-aula a{width:100%;max-width:360px;justify-content:space-between}
}
@media print{.site-header,.footer,.hero-link{display:none!important}body{background:white}#contenido{display:block!important}.hub-hero::before,.use-grid li::before{display:none}.hub-hero{min-height:0;padding:0 0 24px}.hub-hero,.projects-section,.how-use{display:block!important}.container{width:100%}.project-entry{break-inside:avoid}}