/* ═══════════════════════════════════════════════════════════════════════════
   SIPRECE · sitio
   Registro de catálogo técnico: fondo blanco, títulos de sección centrados en
   mayúscula y una biblioteca de recursos con filtros. Los colores salen del
   logo: verde de las letras y rojo del isotipo (el rojo se usa poco, como
   señal, nunca como fondo grande).
   ═══════════════════════════════════════════════════════════════════════════ */
:root{
  --verde:#3c5b31;        /* letras del logo */
  --verde-osc:#2a4323;
  --verde-noche:#13210f;  /* pie y tapas */
  --verde-vivo:#4f8a3c;   /* línea de la barra, hover */
  --verde-claro:#e8efe3;
  --verde-tenue:#f3f6f1;
  --rojo:#aa0f17;         /* isotipo */
  --texto:#1f261c;
  --suave:#5b6656;
  --tenue:#7d8878;
  --linea:#dde3d9;
  --blanco:#fff;

  --titulo:'Montserrat',system-ui,sans-serif;
  --sans:'Plus Jakarta Sans',system-ui,-apple-system,sans-serif;

  --curva:cubic-bezier(.22,1,.36,1);
  --alto-barra:76px;
  --radio:14px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--alto-barra) + 12px)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:var(--blanco);color:var(--texto);font-family:var(--sans);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--verde-vivo);outline-offset:3px;border-radius:6px}
.oculto{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.saltar{position:absolute;left:12px;top:-60px;z-index:100;background:var(--verde);color:#fff;padding:10px 16px;border-radius:8px}
.saltar:focus{top:12px}

.env{max-width:1240px;margin:0 auto;padding:0 clamp(16px,3.4vw,40px)}

/* ── Botones ─────────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border-radius:999px;font-weight:600;font-size:15px;white-space:nowrap;cursor:pointer;border:1.5px solid transparent;
  transition:background-color .25s var(--curva),color .25s var(--curva),border-color .25s var(--curva),transform .25s var(--curva)}
.btn:active{transform:translateY(1px)}
.btn-verde{background:var(--verde);color:#fff}
.btn-verde:hover{background:var(--verde-osc)}
.btn-blanco{background:#fff;color:var(--verde-osc)}
.btn-blanco:hover{background:var(--verde-claro)}
.btn-linea{border-color:rgba(255,255,255,.7);color:#fff}
.btn-linea:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* ── Barra ───────────────────────────────────────────────────────────────── */
.barra{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);
  border-bottom:3px solid var(--verde-vivo);transition:box-shadow .3s var(--curva)}
.barra.sombra{box-shadow:0 6px 24px -14px rgba(19,33,15,.35)}
.barra-env{display:flex;align-items:center;gap:clamp(14px,2.4vw,32px);height:var(--alto-barra)}
.logo{flex:none}
.logo img{height:30px;width:auto;max-width:none}
.menu{display:flex;gap:clamp(14px,2vw,28px);margin-left:auto}
.menu a{font-size:15px;font-weight:500;color:#3f463c;padding:6px 0;position:relative;white-space:nowrap;transition:color .2s}
.menu a::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--verde-vivo);
  transform:scaleX(0);transition:transform .3s var(--curva)}
.menu a:hover,.menu a.on{color:var(--verde-vivo)}
.menu a.on::after{transform:scaleX(1)}

.buscar{position:relative;display:flex;align-items:center}
.buscar input{width:190px;height:44px;border:0;border-radius:999px;background:#eff1ee;padding:0 46px 0 20px;
  font-size:14.5px;outline:none;transition:box-shadow .2s,background-color .2s}
.buscar input::placeholder{color:#8a9386}
.buscar input:focus{background:#fff;box-shadow:0 0 0 2px var(--verde-vivo)}
.buscar input::-webkit-search-cancel-button{display:none}
.buscar button{position:absolute;right:6px;width:34px;height:34px;border:0;background:none;cursor:pointer;
  display:grid;place-items:center;color:var(--verde-vivo);border-radius:50%}
.buscar svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.btn-entrar{height:44px;padding:0 22px}

.hamb{display:none;width:44px;height:44px;border:0;background:none;cursor:pointer;flex-direction:column;
  justify-content:center;align-items:center;gap:5px;margin-left:auto}
.hamb span{display:block;width:22px;height:2px;background:var(--texto);border-radius:2px;transition:transform .3s var(--curva),opacity .2s}
.hamb[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamb[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamb[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:1400px){.barra .buscar{display:none}}
@media (max-width:1080px){
  :root{--alto-barra:64px}
  .logo img{height:24px}
  .hamb{display:flex}
  .btn-entrar{margin-left:0;order:3;height:40px;padding:0 18px;font-size:14px}
  .hamb{order:4;margin-left:0}
  .barra-env{justify-content:space-between}
  .logo{margin-right:auto}
  .menu{position:fixed;left:0;right:0;top:var(--alto-barra);margin:0;flex-direction:column;gap:0;
    background:#fff;border-bottom:3px solid var(--verde-vivo);padding:8px clamp(16px,3.4vw,40px) 18px;
    box-shadow:0 20px 30px -20px rgba(0,0,0,.25);
    transform:translateY(-8px);opacity:0;visibility:hidden;transition:transform .3s var(--curva),opacity .2s,visibility .3s}
  .menu.abierto{transform:none;opacity:1;visibility:visible}
  .menu a{padding:14px 0;border-bottom:1px solid var(--linea);font-size:16px}
  .menu a::after{display:none}
}

/* ── Portada ─────────────────────────────────────────────────────────────── */
.portada{position:relative;background:var(--verde-noche);color:#fff;overflow:hidden;isolation:isolate}
.portada-foto{position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(90deg,rgba(19,33,15,.96) 0%,rgba(19,33,15,.82) 38%,rgba(19,33,15,.25) 72%,rgba(19,33,15,.1) 100%),
    url('img/subestacion.webp') 70% 55% / cover no-repeat;
  animation:acercar 40s ease-in-out infinite alternate}
@keyframes acercar{from{transform:scale(1)}to{transform:scale(1.06)}}
@media (prefers-reduced-motion:reduce){.portada-foto{animation:none}}
.portada-env{padding:clamp(72px,10vw,132px) clamp(16px,3.4vw,40px) clamp(110px,12vw,160px)}
.volanta{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:#bcd8ad;margin-bottom:20px}
.volanta::before{content:'';width:9px;height:9px;border-radius:50%;background:var(--rojo);box-shadow:0 0 0 3px rgba(170,15,23,.25)}
.portada h1{font-family:var(--titulo);font-weight:800;font-size:clamp(34px,5.2vw,64px);line-height:1.05;
  letter-spacing:-.02em;max-width:17ch;text-wrap:balance}
.portada .bajada{margin-top:22px;max-width:56ch;font-size:clamp(16px,1.4vw,18px);color:#d6e3cf}
.portada .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
@media (max-width:700px){
  .portada-foto{background:
    linear-gradient(180deg,rgba(19,33,15,.75) 0%,rgba(19,33,15,.92) 60%,rgba(19,33,15,.98) 100%),
    url('img/subestacion.webp') 60% 40% / cover no-repeat}
}

/* ── Datos clave: tira que pisa la portada ───────────────────────────────── */
.claves{position:relative;z-index:2;margin-top:clamp(-70px,-6vw,-48px)}
.claves-grid{display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-radius:var(--radio);
  box-shadow:0 24px 50px -28px rgba(19,33,15,.45),0 0 0 1px var(--linea)}
.claves-grid div{padding:22px 22px 24px;position:relative}
.claves-grid div+div::before{content:'';position:absolute;left:0;top:22px;bottom:22px;width:1px;background:var(--linea)}
.claves dt{font-family:var(--titulo);font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--verde-vivo);margin-bottom:6px}
.claves dd{font-size:14.5px;line-height:1.45;color:var(--texto)}
@media (max-width:1000px){
  .claves-grid{grid-template-columns:repeat(2,1fr)}
  .claves-grid div:last-child{grid-column:1/-1}
  .claves-grid div::before{display:none}
  .claves-grid div{border-bottom:1px solid var(--linea)}
  .claves-grid div:nth-child(odd):not(:last-child){border-right:1px solid var(--linea)}
  .claves-grid div:last-child{border-bottom:0}
}
@media (max-width:520px){
  .claves-grid{grid-template-columns:1fr}
  .claves-grid div:nth-child(odd):not(:last-child){border-right:0}
  .claves-grid div{padding:16px 18px}
}

/* ── Secciones ───────────────────────────────────────────────────────────── */
.sec{padding:clamp(64px,8vw,104px) 0}
.sec-gris{background:var(--verde-tenue)}
.sec-cab{text-align:center;max-width:680px;margin:0 auto clamp(34px,4vw,52px)}
.sec-cab h2{font-family:var(--titulo);font-weight:700;font-size:clamp(28px,3.2vw,36px);letter-spacing:.01em;
  text-transform:uppercase;color:#2f352c}
.sec-cab p{margin-top:12px;color:var(--suave);font-size:16.5px}

/* recorrido en video */
.reproductor{position:relative;max-width:1080px;margin:0 auto;border-radius:18px;overflow:hidden;background:var(--verde-noche);
  aspect-ratio:16/9;box-shadow:0 40px 80px -40px rgba(19,33,15,.6),0 0 0 1px var(--linea)}
.reproductor video{display:block;width:100%;height:100%;object-fit:cover;cursor:pointer}
.rep-btn{position:absolute;left:18px;bottom:22px;width:48px;height:48px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.94);color:var(--verde);display:grid;place-items:center;box-shadow:0 8px 24px rgba(0,0,0,.35);
  transition:transform .25s var(--curva),background-color .2s}
.rep-btn:hover{transform:scale(1.07);background:#fff}
.rep-btn svg{width:22px;height:22px;fill:currentColor}
.rep-btn .i-pausa,.reproductor.sonando .rep-btn .i-play{display:none}
.reproductor.sonando .rep-btn .i-pausa{display:block}
/* antes de la primera reproducción el botón va grande y centrado, sobre el póster */
.reproductor:not(.visto) .rep-btn{left:50%;top:50%;bottom:auto;width:84px;height:84px;margin:-42px 0 0 -42px}
.reproductor:not(.visto) .rep-btn svg{width:34px;height:34px}
.rep-barra{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(255,255,255,.18)}
.rep-barra i{display:block;height:100%;width:0;background:var(--verde-vivo)}
.capitulos{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:12px;max-width:1080px;margin:18px auto 0}
.capitulos button{width:100%;text-align:left;border:1px solid var(--linea);background:#fff;border-radius:12px;padding:12px 16px;cursor:pointer;
  font-size:14.5px;font-weight:600;color:var(--texto);display:flex;flex-direction:column;justify-content:flex-start;gap:2px;min-height:44px;height:100%;
  transition:border-color .2s,background-color .2s,color .2s}
.capitulos button span{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--verde-vivo);font-variant-numeric:tabular-nums}
.capitulos button:hover{border-color:var(--verde-vivo)}
.capitulos button.on{background:var(--verde);border-color:var(--verde);color:#fff}
.capitulos button.on span{color:#bcd8ad}
.nota-video{text-align:center;font-size:13px;color:var(--tenue);margin-top:14px}
@media (max-width:760px){
  .capitulos{grid-template-columns:1fr 1fr}
  .capitulos li:last-child{grid-column:1/-1}
  .rep-btn{left:12px;bottom:14px;width:42px;height:42px}
  .reproductor{border-radius:12px}
}

/* módulos */
.mods{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.mod{background:#fff;border:1px solid var(--linea);border-radius:var(--radio);padding:26px 24px 24px;
  display:flex;flex-direction:column;gap:10px;position:relative;overflow:hidden;
  transition:border-color .25s var(--curva),box-shadow .3s var(--curva),transform .3s var(--curva)}
.mod::after{content:'';position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--verde-vivo);
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--curva)}
.mod:hover{border-color:#c6d3c0;box-shadow:0 18px 40px -26px rgba(19,33,15,.4);transform:translateY(-3px)}
.mod:hover::after{transform:scaleX(1)}
.mod .ico{width:38px;height:38px;fill:none;stroke:var(--verde);stroke-width:1.5;stroke-linecap:round;margin-bottom:6px}
.mod .n{position:absolute;top:24px;right:22px;font-family:var(--titulo);font-weight:700;font-size:12px;letter-spacing:.12em;color:#b3bdae}
.mod h3{font-family:var(--titulo);font-size:16.5px;font-weight:700;line-height:1.3;color:var(--texto)}
.mod p{color:var(--suave);font-size:14.3px;line-height:1.55;flex:1}
.mod .meta{font-size:11.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--verde-vivo);margin-top:4px}
.mod-cta{background:var(--verde);border-color:var(--verde);color:#fff}
.mods>.mod-cta{grid-column:1/-1}
.mod-cta .n{position:static;color:#bcd8ad;margin-bottom:22px}
.mod-cta h3{color:#fff;font-size:19px}
.mod-cta p{color:#d6e3cf}
.mod-cta::after{background:var(--rojo)}
.mod-cta:hover{border-color:var(--verde-osc);background:var(--verde-osc)}
.flecha{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14.5px;margin-top:6px}
.flecha svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .3s var(--curva)}
.mod-cta:hover .flecha svg{transform:translateX(4px)}
@media (max-width:1060px){.mods{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.mods{grid-template-columns:1fr}.mod{padding:22px 20px}}

/* pasos: un conductor horizontal que une los bornes */
.pasos{--hueco:clamp(18px,2.4vw,32px);list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--hueco);position:relative}
.pasos li{position:relative}
.pasos li:not(:last-child)::before{content:'';position:absolute;left:56px;right:calc(-1 * var(--hueco));top:27px;height:2px;background:var(--verde-vivo)}
.pasos li:nth-child(3)::before{background:linear-gradient(90deg,var(--verde-vivo),var(--rojo))}
.borne{display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:#fff;
  border:2px solid var(--verde-vivo);font-family:var(--titulo);font-weight:800;font-size:16px;color:var(--verde);
  position:relative;margin-bottom:22px;box-shadow:0 0 0 6px var(--verde-tenue)}
.pasos li:last-child .borne{border-color:var(--rojo);color:var(--rojo)}
.pasos h3{font-family:var(--titulo);font-weight:700;font-size:18px;margin-bottom:8px}
.pasos p{color:var(--suave);font-size:14.8px}
@media (max-width:900px){
  .pasos{grid-template-columns:1fr;gap:0}
  .pasos li:not(:last-child)::before{left:27px;right:auto;top:56px;bottom:0;width:2px;height:auto}
  .pasos li:nth-child(3)::before{background:linear-gradient(180deg,var(--verde-vivo),var(--rojo))}
  .pasos li{padding:0 0 30px 80px;min-height:56px}
  .borne{position:absolute;left:0;top:0;margin:0}
  .pasos h3{padding-top:12px}
}

.desplegable{margin-top:clamp(36px,4vw,52px);border:1px solid var(--linea);border-radius:var(--radio);background:#fff;overflow:hidden}
.desplegable summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:600;color:var(--verde);
  display:flex;justify-content:space-between;align-items:center;gap:12px}
.desplegable summary::-webkit-details-marker{display:none}
.desplegable summary::after{content:'';width:10px;height:10px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(45deg) translate(-2px,-2px);transition:transform .3s var(--curva);flex:none}
.desplegable[open] summary::after{transform:rotate(-135deg)}
.desplegable[open] summary{border-bottom:1px solid var(--linea)}
.desplegable .spec{border:0;border-radius:0}

/* tablas */
.spec{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--linea);border-radius:var(--radio);overflow:hidden;background:#fff}
.spec th,.spec td{text-align:left;vertical-align:top;padding:16px 22px;border-bottom:1px solid var(--linea);font-size:14.8px;line-height:1.55}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.spec th{width:230px;font-family:var(--titulo);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--verde);background:var(--verde-tenue)}
.spec td .s{color:var(--suave)}
@media (max-width:700px){
  .spec,.spec tbody,.spec tr,.spec th,.spec td{display:block;width:100%}
  .spec th{padding:14px 18px 4px;border-bottom:0}
  .spec td{padding:0 18px 16px;background:var(--verde-tenue)}
  .spec td{background:#fff}
  .spec th{background:#fff}
  .spec tr{border-bottom:1px solid var(--linea)}
  .spec tr:last-child{border-bottom:0}
  .spec th,.spec td{border-bottom:0}
}

/* solapas de tableros e ingeniería */
.solapas{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:28px}
.solapas button{border:1.5px solid var(--linea);background:#fff;border-radius:999px;padding:0 18px;min-height:44px;
  font-size:14.5px;font-weight:600;color:var(--suave);cursor:pointer;transition:all .25s var(--curva)}
.solapas button:hover{border-color:var(--verde-vivo);color:var(--verde)}
.solapas button[aria-selected="true"]{background:var(--verde);border-color:var(--verde);color:#fff}
.panel{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center;
  background:#fff;border:1px solid var(--linea);border-radius:var(--radio);padding:clamp(24px,4vw,48px);
  animation:entrar .45s var(--curva)}
.panel[hidden]{display:none}
@keyframes entrar{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.panel h3{font-family:var(--titulo);font-weight:700;font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.panel p{color:var(--suave);margin-bottom:14px}
.panel ul{list-style:none;display:grid;gap:9px;margin-bottom:20px}
.panel li{padding-left:26px;position:relative;font-size:15px}
.panel li::before{content:'';position:absolute;left:0;top:.55em;width:12px;height:7px;border-left:2px solid var(--verde-vivo);
  border-bottom:2px solid var(--verde-vivo);transform:rotate(-45deg)}
.dato{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--verde);
  background:var(--verde-claro);padding:7px 12px;border-radius:6px}
.lamina{background:var(--verde-noche);border-radius:12px;padding:20px;aspect-ratio:16/11;display:grid;place-items:center;
  background-image:linear-gradient(rgba(188,216,173,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(188,216,173,.06) 1px,transparent 1px);
  background-size:20px 20px}
.lamina svg{width:100%;height:100%;fill:none;stroke:#9cc489;stroke-width:1.6;stroke-linecap:round}
.lamina .b{stroke-width:4;stroke:#bcd8ad}
.lamina .llv rect{fill:rgba(156,196,137,.12)}
.lamina .t{stroke:#5f8a50;stroke-dasharray:3 5}
.lamina text{fill:#9cc489;stroke:none;font-family:var(--sans);font-size:10px;font-weight:600;letter-spacing:.08em}
.lamina .rojo{stroke:#e0444b}
.lamina .rojo-f{fill:var(--rojo);stroke:none}
.lamina .verde-f{fill:#6fb052;stroke:none}
.lamina .amar-f{fill:#d9b23a;stroke:none}
.lamina .cu{fill:rgba(217,140,80,.18);stroke:#d98c50}
.lamina .blanco{stroke:#fff;stroke-width:4}
.lamina .barras rect{fill:rgba(156,196,137,.35);stroke:none}
.lamina .barras2 rect{fill:#6fb052;stroke:none}
/* videos de "cómo funciona" (1280×800) */
.lamina-video{margin:0;position:relative;border-radius:12px;overflow:hidden;background:var(--verde-noche);aspect-ratio:16/10;
  box-shadow:0 24px 50px -30px rgba(19,33,15,.6),0 0 0 1px rgba(19,33,15,.08)}
.lamina-video video{display:block;width:100%;height:100%;object-fit:cover;cursor:pointer}
.panel:has(.lamina-video){grid-template-columns:.85fr 1.15fr}
.video-computo{max-width:920px;margin:0 auto clamp(40px,4.5vw,60px);border-radius:16px}
@media (max-width:800px){.panel{grid-template-columns:1fr}.lamina{order:-1}
  .panel:has(.lamina-video){grid-template-columns:1fr}.panel .lamina-video{order:-1}}
@media (max-width:560px){.solapas{justify-content:flex-start;flex-wrap:nowrap;overflow-x:auto;margin:0 -16px 22px;padding:0 16px 4px;scrollbar-width:none}
  .solapas button{flex:none}}

/* ── Recursos ────────────────────────────────────────────────────────────── */
.filtros{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.selector{position:relative}
.selector select{appearance:none;-webkit-appearance:none;min-width:210px;height:46px;border:0;border-bottom:2px solid #3f463c;
  background:transparent;padding:0 36px 0 4px;font-size:15.5px;font-weight:500;cursor:pointer;border-radius:0}
.selector select:focus-visible{outline:none;border-bottom-color:var(--verde-vivo)}
.selector::after{content:'';position:absolute;right:10px;top:16px;width:8px;height:8px;border-right:2px solid #3f463c;
  border-bottom:2px solid #3f463c;transform:rotate(45deg);pointer-events:none}
.buscar-rec{margin-left:auto}
.buscar-rec input{width:260px;background:#fff;box-shadow:inset 0 0 0 1px var(--linea)}
.conteo{font-size:13.5px;color:var(--tenue);margin:18px 0 22px}
@media (max-width:700px){
  .filtros{gap:10px}
  .selector{flex:1 1 140px}
  .selector select{min-width:0;width:100%}
  .buscar-rec{margin-left:0;flex:1 1 100%}
  .buscar-rec input{width:100%}
}

.recursos{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,2.6vw,36px) clamp(16px,2.4vw,32px)}
@media (max-width:1060px){.recursos{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){.recursos{grid-template-columns:repeat(2,1fr)}}
@media (max-width:400px){.recursos{grid-template-columns:1fr 1fr;gap:18px 12px}}
.rec a{display:flex;flex-direction:column;gap:14px;height:100%}
.rec .pie-rec{display:flex;gap:10px;align-items:flex-start}
.rec .pie-rec svg{width:22px;height:22px;flex:none;fill:none;stroke:var(--verde-vivo);stroke-width:1.7;stroke-linejoin:round;stroke-linecap:round;margin-top:1px}
.rec h3{font-size:14.5px;font-weight:500;line-height:1.4;color:#3f463c;transition:color .2s}
.rec a:hover h3{color:var(--verde-vivo)}
.rec .peso{display:block;font-size:12px;color:var(--tenue);margin-top:3px}

/* La tapa: copia el formato de una tapa de catálogo — banda blanca con la
   marca arriba, filete verde, y la ilustración técnica sobre verde noche. */
.tapa{aspect-ratio:3/4;border-radius:4px;overflow:hidden;background:#fff;display:flex;flex-direction:column;
  box-shadow:0 1px 0 rgba(0,0,0,.04),0 0 0 1px var(--linea);
  transition:box-shadow .35s var(--curva),transform .35s var(--curva)}
.rec a:hover .tapa{transform:translateY(-4px);box-shadow:0 22px 40px -22px rgba(19,33,15,.55),0 0 0 1px #c6d3c0}
.tapa-cab{padding:9% 9% 7%;display:grid;grid-template-columns:1fr 1fr;gap:6%;align-items:start;border-bottom:3px solid var(--verde-vivo)}
.tapa-cab img{width:100%;max-width:92px;margin-top:2px}
.tapa-cab span{font-size:clamp(6px,.62vw,8px);font-weight:700;letter-spacing:.12em;text-transform:uppercase;line-height:1.35;color:var(--verde-vivo)}
.tapa-cab span b{display:block;color:#7d8878;font-weight:600;margin-top:3px}
.tapa-arte{flex:1;position:relative;background:var(--verde-noche);overflow:hidden}
.tapa-arte svg{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:#9cc489;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.tapa-arte .f{position:absolute;inset:0;background:url('img/subestacion.webp') center / cover;opacity:.9}
.tapa-arte .g{stroke:#4d7a3f}
.tapa-arte .r{fill:var(--rojo);stroke:none}
.tapa-arte .fill{fill:rgba(156,196,137,.16)}
.tapa-arte .txt{fill:#bcd8ad;stroke:none;font-family:var(--titulo);font-weight:700;font-size:13px}
.tapa-arte .play{position:absolute;left:50%;top:50%;width:54px;height:54px;margin:-27px 0 0 -27px;border-radius:50%;
  background:rgba(255,255,255,.95);display:grid;place-items:center;box-shadow:0 10px 30px rgba(0,0,0,.4);
  transition:transform .3s var(--curva)}
.tapa-arte .play::after{content:'';border-left:15px solid var(--verde);border-top:9px solid transparent;border-bottom:9px solid transparent;margin-left:4px}
.rec a:hover .play{transform:scale(1.08)}
.tapa-arte .dur{position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.6);color:#fff;font-size:11px;font-weight:600;padding:2px 7px;border-radius:4px}

.rec .peso{display:flex;align-items:center;gap:5px}
.rec .peso .candado{width:13px;height:13px;flex:none;fill:none;stroke:var(--tenue);stroke-width:2;stroke-linecap:round;margin:0}
.tapa-arte .cerrado{position:absolute;right:8px;top:8px;display:flex;align-items:center;gap:5px;background:rgba(255,255,255,.92);
  color:var(--verde-osc);font-size:10.5px;font-weight:700;letter-spacing:.04em;padding:4px 9px 4px 7px;border-radius:999px}
.tapa-arte .cerrado svg{position:static;width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round}
.vacio{text-align:center;color:var(--suave);padding:40px 0}
.vacio button{border:0;background:none;color:var(--verde-vivo);font-weight:600;cursor:pointer;text-decoration:underline}

/* ── Acceso ──────────────────────────────────────────────────────────────── */
.acceso{background:var(--verde);color:#fff;padding:clamp(44px,5vw,64px) 0;position:relative;overflow:hidden}
.acceso-env{display:grid;grid-template-columns:auto 1fr auto;gap:clamp(20px,3vw,40px);align-items:center}
.acceso-iso{width:84px;height:84px;padding:10px;background:#fff;border-radius:50%;box-shadow:0 10px 30px -12px rgba(0,0,0,.45)}
.acceso h2{font-family:var(--titulo);font-weight:700;font-size:clamp(22px,2.4vw,28px);text-transform:uppercase;letter-spacing:.01em}
.acceso p{color:#d6e3cf;margin-top:6px;max-width:60ch}
@media (max-width:760px){.acceso-env{grid-template-columns:1fr;text-align:left}.acceso-iso{width:64px;height:64px;padding:8px}}

/* ── Pie ─────────────────────────────────────────────────────────────────── */
.pie{background:var(--verde-noche);color:#c9d6c3;padding:clamp(44px,5vw,64px) 0 26px}
.pie-env{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1)}
.pie-marca img{height:30px;width:auto;max-width:none}
.pie-marca p{margin-top:14px;font-size:14px;color:#94a68c;max-width:34ch}
.pie-nav{display:grid;grid-template-columns:repeat(2,auto);gap:10px 48px;align-content:start}
.pie-nav a{font-size:14.5px;transition:color .2s}
.pie-nav a:hover{color:#fff}
.pie-legal{padding-top:20px;font-size:13px;color:#7f9378}

/* aparición suave al entrar en pantalla */
.rv{opacity:0;transform:translateY(16px);transition:opacity .7s var(--curva),transform .7s var(--curva)}
.rv.on{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* preguntas frecuentes: lista sobria, una línea entre preguntas y un + que gira al abrir */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--linea)}
.faq details{border-bottom:1px solid var(--linea)}
.faq summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 4px;cursor:pointer;
  font-family:var(--titulo);font-weight:600;font-size:17px;line-height:1.4;color:var(--texto);transition:color .2s var(--curva)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:14px;height:14px;
  background:linear-gradient(currentColor,currentColor) center/14px 1.6px no-repeat,linear-gradient(currentColor,currentColor) center/1.6px 14px no-repeat;
  color:var(--verde-vivo);transition:transform .25s var(--curva)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq summary:hover{color:var(--verde)}
.faq summary:focus-visible{outline:2px solid var(--verde-vivo);outline-offset:4px;border-radius:6px}
.faq details p{padding:0 44px 24px 4px;color:var(--suave);font-size:16px;max-width:68ch}
@media (max-width:560px){.faq summary{font-size:16px;padding:18px 2px}.faq details p{padding-right:4px}}
@media (prefers-reduced-motion:reduce){.faq summary,.faq summary::after{transition:none}}

/* el balance económico va como tarjeta propia debajo de los pasos del cómputo */
.panel-area{margin-top:clamp(40px,5vw,64px)}

/* video 16:9 (dibujo de la instalación): sin recortar los costados */
.lamina-video.v169{aspect-ratio:16/9}