:root{
  --bg:#e9fbf5;
  --bg2:#eaf7ff;
  --card:#ffffff;
  --text:#102b24;
  --muted:#55716a;
  --green:#10b981;
  --green2:#059669;
  --blue:#1d8cf8;
  --yellow:#f6c84c;
  --red:#ef4444;
  --purple:#8b5cf6;
  --line:#bfe8dc;
  --shadow:0 22px 55px rgba(16,76,67,.13);
  --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 12% 8%, rgba(16,185,129,.18), transparent 28%),
    radial-gradient(circle at 88% 15%, rgba(29,140,248,.12), transparent 26%),
    linear-gradient(120deg,var(--bg),var(--bg2));
  min-height:100vh;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%}
.container{width:min(1180px, calc(100% - 42px)); margin:0 auto}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:10px;border-radius:10px;z-index:99}
.skip:focus{left:12px;top:12px}
.topbar{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(16px);
  background:rgba(240,255,250,.84);
  border-bottom:1px solid rgba(16,185,129,.15);
}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.02em}
.logo{width:46px;height:46px;border-radius:16px;background:linear-gradient(135deg,var(--green),var(--blue));display:grid;place-items:center;color:#fff;box-shadow:0 12px 28px rgba(29,140,248,.25)}
.navlinks{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.navlinks a,.pill-btn,.small-btn{
  border:1px solid rgba(16,185,129,.22);
  background:rgba(255,255,255,.72);
  padding:10px 14px;
  border-radius:999px;
  font-weight:750;
  color:#16433a;
  transition:.22s ease;
}
.navlinks a:hover,.pill-btn:hover,.small-btn:hover{transform:translateY(-2px);background:#fff;box-shadow:0 10px 24px rgba(16,76,67,.10)}
.menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;font-size:22px}
.progress-line{height:4px;background:linear-gradient(90deg,var(--green),var(--blue),var(--yellow));width:0;transition:width .1s linear}
.hero{padding:78px 0 36px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;background:rgba(255,255,255,.8);border:1px solid var(--line);font-weight:800;color:#065f46}
h1{font-size:clamp(2.1rem,5vw,5.4rem);line-height:.97;margin:20px 0 18px;letter-spacing:-.055em}
.hero p{font-size:clamp(1.05rem,1.8vw,1.25rem);line-height:1.8;color:var(--muted);margin:0 0 26px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.primary{background:linear-gradient(135deg,var(--green),var(--blue));color:#fff;border:0;padding:15px 20px;border-radius:999px;font-weight:900;box-shadow:0 18px 35px rgba(29,140,248,.22);display:inline-flex;align-items:center;gap:10px}
.secondary{background:#fff;color:#123d35;border:1px solid var(--line);padding:15px 20px;border-radius:999px;font-weight:900;display:inline-flex;align-items:center;gap:10px}
.hero-card{background:rgba(255,255,255,.82);border:1px solid rgba(16,185,129,.18);border-radius:34px;box-shadow:var(--shadow);padding:24px;position:relative;overflow:hidden}
.eco-stage{height:420px;border-radius:26px;background:linear-gradient(160deg,#ebfff7,#dff4ff);position:relative;overflow:hidden;border:1px solid rgba(16,185,129,.16)}
.sun{position:absolute;width:76px;height:76px;border-radius:50%;background:var(--yellow);right:42px;top:35px;box-shadow:0 0 38px rgba(246,200,76,.5);animation:pulse 3s infinite}
.hill{position:absolute;bottom:-24px;width:120%;height:190px;left:-10%;background:linear-gradient(180deg,#bdf5d8,#8ee6b8);border-radius:50% 50% 0 0}
.recycle-bin{position:absolute;bottom:72px;width:82px;height:108px;border-radius:16px 16px 10px 10px;background:linear-gradient(180deg,#17c98c,#0aa26d);box-shadow:inset 0 -12px 0 rgba(0,0,0,.08)}
.recycle-bin:before{content:"";position:absolute;top:-16px;left:12px;width:58px;height:14px;border-radius:8px;background:#0b7b55}
.recycle-bin.b1{left:58px}.recycle-bin.b2{left:158px;background:linear-gradient(180deg,#36a7ff,#1c79d8)}.recycle-bin.b3{left:258px;background:linear-gradient(180deg,#f9d75f,#e7ad17)}
.student{position:absolute;bottom:65px;width:112px;height:172px;animation:floaty 4s ease-in-out infinite}
.student.s1{right:172px}.student.s2{right:48px;animation-delay:.7s}
.head{width:56px;height:56px;border-radius:50%;background:#f5c39c;margin:0 auto;position:relative}.hair{position:absolute;background:#36281f;border-radius:50%;width:62px;height:32px;top:-9px;left:-3px}.body{width:72px;height:78px;background:linear-gradient(180deg,#ffffff,#dff7ef);border:4px solid #0aa26d;border-radius:24px;margin:-2px auto 0}.legs{width:80px;height:38px;margin:0 auto;background:linear-gradient(90deg,#1f6fd3 45%,transparent 45% 55%,#1f6fd3 55%);border-radius:12px}.arm{position:absolute;width:48px;height:12px;background:#f5c39c;border-radius:10px;top:82px}.s1 .arm{left:12px;transform:rotate(-24deg)}.s2 .arm{right:12px;transform:rotate(24deg)}
.item-fly{position:absolute;font-size:31px;animation:fly 5s infinite ease-in-out;filter:drop-shadow(0 8px 8px rgba(0,0,0,.1))}.item-fly.i1{left:120px;top:95px}.item-fly.i2{left:230px;top:145px;animation-delay:1.2s}.item-fly.i3{right:150px;top:130px;animation-delay:2.1s}.item-fly.i4{right:255px;top:62px;animation-delay:3s}
.section{padding:58px 0}.section-title{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:22px}.section-title h2{font-size:clamp(1.7rem,3.4vw,3rem);letter-spacing:-.04em;margin:0}.section-title p{color:var(--muted);line-height:1.65;max-width:680px;margin:8px 0 0}.grid{display:grid;gap:22px}.grid-5{grid-template-columns:repeat(5,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:rgba(255,255,255,.84);border:1px solid rgba(16,185,129,.2);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;transition:.25s ease;position:relative;overflow:hidden}.card:hover{transform:translateY(-6px);box-shadow:0 28px 70px rgba(16,76,67,.17)}.card:before{content:"";position:absolute;top:0;left:0;height:6px;width:100%;background:linear-gradient(90deg,var(--green),var(--blue),var(--yellow));opacity:.95}.icon-card{text-align:center;min-height:148px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}.big-emoji{font-size:48px;display:block;animation:bob 3.5s infinite}.icon-card h3,.card h3{margin:0;font-size:1.25rem}.icon-card p,.card p,.unit-list{color:var(--muted);line-height:1.7}.step{min-height:250px;text-align:center;padding-top:34px}.number{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--green),var(--blue));color:#fff;font-weight:950;font-size:1.35rem;margin:0 auto 22px;box-shadow:0 0 0 17px rgba(16,185,129,.08)}
.unit{min-height:455px;display:flex;flex-direction:column}.unit .badge-week{position:absolute;right:22px;top:20px;background:#fff5d8;color:#8a5e10;border-radius:999px;padding:10px 14px;font-weight:900}.unit .unit-icon{font-size:42px;width:76px;height:76px;border-radius:24px;background:#eafbf4;border:1px solid #c5efe3;display:grid;place-items:center;margin:30px 0}.unit h3{font-size:1.85rem;line-height:1.14;margin-bottom:10px}.unit-list{padding-left:22px}.product{margin-top:auto;background:#e5fff1;border-radius:18px;padding:14px 16px;color:#006b49;font-weight:900}.cta-card{background:linear-gradient(135deg,rgba(255,255,255,.92),rgba(226,255,243,.88));border:1px solid rgba(16,185,129,.25);border-radius:34px;box-shadow:var(--shadow);padding:34px;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center}.cta-card h2{margin:0 0 10px;font-size:2rem}.cta-card p{color:var(--muted);line-height:1.7;margin:0}.mindmap{position:relative;min-height:620px;background:rgba(235,255,246,.72);border:1px solid rgba(16,185,129,.24);border-radius:36px;overflow:hidden;padding:34px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.5)}.center-node{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;width:min(290px,54vw);min-height:140px;border-radius:28px;background:linear-gradient(135deg,var(--green),var(--blue));color:#fff;display:grid;place-items:center;text-align:center;font-size:1.55rem;font-weight:950;box-shadow:0 20px 45px rgba(29,140,248,.22)}.map-node{position:absolute;width:250px;background:#fff;border:1px solid var(--line);border-radius:26px;padding:24px;text-align:center;box-shadow:var(--shadow);transition:.22s ease}.map-node:hover{transform:scale(1.04)}.map-node .big-emoji{font-size:36px}.map-node h3{margin:8px 0}.map-node p{margin:0;color:var(--muted)}.m1{left:7%;top:12%}.m2{right:7%;top:12%}.m3{left:6%;top:48%}.m4{right:6%;top:48%}.m5{left:22%;bottom:7%}.m6{right:22%;bottom:7%}.orb{position:absolute;border:2px dashed rgba(16,185,129,.25);border-radius:50%;width:580px;height:580px;left:50%;top:50%;transform:translate(-50%,-50%);animation:spin 22s linear infinite}.chip-wrap{display:flex;gap:14px;flex-wrap:wrap}.chip{display:inline-flex;align-items:center;gap:8px;border-radius:999px;background:#effff7;border:1px solid var(--line);padding:13px 18px;font-weight:900}.footer{padding:44px 0 70px;color:var(--muted);text-align:center}.floating-leaf{position:fixed;pointer-events:none;opacity:.25;font-size:26px;animation:leaf 14s linear infinite;z-index:1}.floating-leaf.l1{left:4%;top:20%}.floating-leaf.l2{right:8%;top:38%;animation-delay:4s}.floating-leaf.l3{left:16%;bottom:8%;animation-delay:8s}.page-hero{padding:58px 0 26px}.breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-weight:750}.page-hero h1{font-size:clamp(2.2rem,5vw,4.4rem)}.two-col{display:grid;grid-template-columns:1fr .88fr;gap:24px;align-items:start}.video-box{border-radius:26px;background:linear-gradient(135deg,#102b24,#0b6f56);min-height:270px;color:#fff;display:grid;place-items:center;position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.18)}.video-box:before{content:"";position:absolute;inset:-50px;background:radial-gradient(circle at 30% 25%,rgba(255,255,255,.18),transparent 24%),radial-gradient(circle at 70% 65%,rgba(29,140,248,.18),transparent 28%);animation:pan 10s infinite alternate}.play{position:relative;z-index:2;width:86px;height:86px;border-radius:50%;border:0;background:#fff;color:#0b6f56;font-size:36px;box-shadow:0 20px 45px rgba(0,0,0,.22);cursor:pointer}.video-caption{position:absolute;left:22px;bottom:18px;right:22px;z-index:2;font-weight:850}.mission-list{display:grid;gap:14px}.mission{display:flex;align-items:flex-start;gap:14px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px}.mission .dot{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--green),var(--blue));color:#fff;flex:0 0 auto;font-weight:950}.interactive-panel{background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:24px}.question{padding:18px;border-radius:20px;background:#f3fff9;border:1px solid var(--line);margin-bottom:14px}.question h3{margin:0 0 10px}.options{display:grid;gap:10px}.option{border:1px solid var(--line);background:#fff;border-radius:16px;padding:12px 14px;font-weight:800;text-align:left;cursor:pointer}.option:hover,.option.selected{border-color:var(--green);background:#eafff4}.feedback{margin-top:14px;font-weight:900}.input,textarea,select{width:100%;border:1px solid var(--line);border-radius:16px;padding:14px;background:#fff;font:inherit;color:var(--text)}textarea{min-height:130px;resize:vertical}.label{display:block;font-weight:900;margin:14px 0 8px}.game-area{display:grid;grid-template-columns:1fr 1fr;gap:20px}.waste-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.waste{border:1px solid var(--line);border-radius:18px;background:#fff;padding:14px;text-align:center;cursor:pointer;font-weight:900}.waste span{font-size:34px;display:block}.category-grid{display:grid;gap:12px}.cat{border-radius:18px;padding:18px;border:2px dashed var(--line);background:#f8fffc}.cat h3{margin:0 0 6px}.score{display:flex;gap:12px;flex-wrap:wrap;margin:14px 0}.score-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px 16px;font-weight:950}.padlet-frame{min-height:430px;border-radius:28px;border:1px dashed rgba(16,185,129,.45);background:linear-gradient(135deg,#f7fffb,#ecf8ff);display:grid;place-items:center;text-align:center;padding:24px}.mock-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;width:100%}.note{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:0 12px 28px rgba(16,76,67,.08);text-align:left}.note b{display:block;margin-bottom:8px}.rubric{width:100%;border-collapse:separate;border-spacing:0 10px}.rubric th{text-align:left;color:#345b53}.rubric td,.rubric th{padding:14px}.rubric tbody tr{background:#fff;box-shadow:0 9px 24px rgba(16,76,67,.07)}.rubric tbody td:first-child{border-radius:16px 0 0 16px;font-weight:900}.rubric tbody td:last-child{border-radius:0 16px 16px 0}.print-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px}.toast{position:fixed;right:20px;bottom:20px;background:#102b24;color:#fff;border-radius:18px;padding:14px 18px;box-shadow:var(--shadow);opacity:0;transform:translateY(12px);transition:.25s ease;z-index:99}.toast.show{opacity:1;transform:translateY(0)}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-13px) rotate(1deg)}}
@keyframes fly{0%,100%{transform:translate(0,0) rotate(0)}50%{transform:translate(30px,24px) rotate(12deg)}}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}
@keyframes spin{to{transform:translate(-50%,-50%) rotate(360deg)}}
@keyframes leaf{from{transform:translateY(-20px) rotate(0)}to{transform:translateY(100vh) rotate(360deg)}}
@keyframes pan{from{transform:translateX(-25px)}to{transform:translateX(25px)}}
.reveal{opacity:0;transform:translateY(22px);transition:.55s ease}.reveal.visible{opacity:1;transform:translateY(0)}
@media(max-width:980px){.hero-grid,.two-col,.cta-card,.game-area{grid-template-columns:1fr}.grid-5,.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}.mindmap{min-height:auto;display:grid;gap:16px}.center-node,.map-node,.orb{position:relative;left:auto;top:auto;right:auto;bottom:auto;transform:none;width:auto}.orb{display:none}.map-node:hover{transform:none}.eco-stage{height:350px}.navlinks{display:none;position:absolute;top:76px;left:0;right:0;background:rgba(240,255,250,.98);padding:14px 21px;border-bottom:1px solid var(--line)}.navlinks.open{display:flex}.menu-toggle{display:block}}
@media(max-width:620px){.container{width:min(100% - 26px,1180px)}.grid-5,.grid-4,.grid-3,.grid-2,.waste-grid,.mock-wall{grid-template-columns:1fr}.hero{padding-top:42px}h1{letter-spacing:-.035em}.card{padding:21px}.student.s1{right:112px}.student.s2{right:15px}.recycle-bin.b3{display:none}.rubric{font-size:.9rem}.rubric td,.rubric th{padding:10px}.nav{height:68px}.navlinks{top:68px}}
@media print{.topbar,.hero-actions,.secondary,.primary,.pill-btn,.small-btn,.footer,.toast{display:none!important}body{background:#fff}.card,.interactive-panel,.print-card{box-shadow:none}.section{padding:18px 0}}


/* Actualización profesional: imagen principal conservada y videos reales */
.hero-image-wrap{position:relative;min-height:430px;border-radius:30px;background:linear-gradient(135deg,#effff6,#e6f7ff);display:grid;place-items:center;overflow:hidden;box-shadow:inset 0 0 0 1px rgba(255,255,255,.6)}
.hero-illustration{width:min(100%,620px);height:auto;display:block;animation:floaty 7s ease-in-out infinite;filter:drop-shadow(0 18px 28px rgba(16,76,67,.14))}
.spark{position:absolute;font-size:30px;opacity:.75;animation:bob 4s ease-in-out infinite}.sp1{left:12%;top:18%}.sp2{right:12%;top:30%;animation-delay:1.2s}.sp3{left:48%;bottom:11%;animation-delay:2s}
.video-embed{position:relative;width:100%;aspect-ratio:16/9;border-radius:24px;overflow:hidden;background:#102b24;border:1px solid rgba(16,185,129,.22);box-shadow:0 18px 40px rgba(16,76,67,.14)}
.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video-card h2{margin-top:18px}.video-meta{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.video-pill{border-radius:999px;background:#eafff4;border:1px solid var(--line);padding:8px 12px;font-weight:900;color:#0b6b4c;font-size:.92rem}.evidence-buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}.resource-link{font-weight:900;color:#0b6f56;text-decoration:underline;text-underline-offset:4px}.padlet-template{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.padlet-column{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:0 12px 28px rgba(16,76,67,.08)}.padlet-column h3{font-size:1rem;margin:0 0 10px}.padlet-column ul{padding-left:18px;color:var(--muted);line-height:1.6}.teacher-alert{background:linear-gradient(135deg,#fff7dc,#eafff4);border:1px solid rgba(226,167,28,.3);border-radius:24px;padding:20px;line-height:1.7}.mini-steps{counter-reset:paso;display:grid;gap:12px}.mini-steps li{list-style:none;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px}.mini-steps li:before{counter-increment:paso;content:counter(paso);display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--green),var(--blue));color:#fff;font-weight:950;margin-right:10px}@media(max-width:980px){.padlet-template{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.padlet-template{grid-template-columns:1fr}.hero-image-wrap{min-height:300px}}


/* Centro de evidencias: Padlet, Forms y Sheets */
.evidence-card{display:flex;flex-direction:column;gap:10px;text-decoration:none;color:inherit;min-height:330px}.evidence-card .product{margin-top:auto}.evidence-action{align-self:flex-start;margin-top:8px}.flowline{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.flow-step{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;position:relative;box-shadow:0 12px 28px rgba(16,76,67,.07)}.flow-step span{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--green),var(--blue));color:#fff;font-weight:950;margin-bottom:12px}.flow-step b{font-size:1.08rem}.flow-step p{color:var(--muted);line-height:1.6;margin-bottom:0}.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.form-tile{display:block;background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;text-decoration:none;color:inherit;box-shadow:0 12px 28px rgba(16,76,67,.07);transition:.22s ease}.form-tile:hover{transform:translateY(-4px);box-shadow:0 22px 46px rgba(16,76,67,.13)}.form-tile span{font-size:34px;display:block;margin-bottom:10px}.form-tile b{display:block;font-size:1.05rem}.form-tile p{color:var(--muted);line-height:1.55;margin:8px 0 0}.accordion details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 18px;margin:12px 0}.accordion summary{font-weight:950;cursor:pointer}.accordion p{color:var(--muted);line-height:1.7}.metric-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow)}.viz-stat-value{font-size:2.2rem;font-weight:950;background:linear-gradient(135deg,var(--green),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}.metric-card p{color:var(--muted);line-height:1.6}@media(max-width:980px){.flowline,.form-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.flowline,.form-grid{grid-template-columns:1fr}.evidence-card{min-height:auto}}

.padlet-real-frame{width:100%;min-height:680px;border-radius:28px;overflow:hidden;border:1px solid rgba(16,185,129,.35);background:#fff;box-shadow:var(--shadow)}
.padlet-real-frame iframe{width:100%;height:680px;border:0;display:block;background:#fff}
@media(max-width:720px){.padlet-real-frame{min-height:560px}.padlet-real-frame iframe{height:560px}}