:root{color:#18251f;font-synthesis:none;--green:#164d3a;--muted:#5e6e65;--line:#d8dfd8;--accent:#d8ec8b;background:#f5f4ef;font-family:Inter,Arial,sans-serif}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}a{color:var(--green)}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.65}.demo{color:#384c38;text-align:center;background:#e8eddf;padding:10px 20px;font-size:12px}header{align-items:center;gap:20px;max-width:1040px;margin:auto;padding:24px;display:flex}.logo{letter-spacing:-1px;align-items:center;gap:10px;font-size:24px;font-weight:950;text-decoration:none;display:flex}.logo span{letter-spacing:2px;border-left:1px solid #b9c8bd;padding:8px 10px;font-size:12px}.switch{gap:6px;margin-left:auto;display:flex}.switch a{border:1px solid var(--line);border-radius:30px;padding:9px 12px;font-size:14px;text-decoration:none}.switch a[aria-current]{background:var(--green);color:#fff}.price{color:var(--muted);font-size:12px}main{max-width:990px;margin:0 auto;padding:0 24px 110px}.eyebrow{text-transform:uppercase;letter-spacing:2px;color:#62786a;margin:20px 0 12px;font-size:11px;font-weight:750}h1{letter-spacing:-2px;max-width:760px;margin:10px 0 20px;font-size:clamp(32px,6vw,56px);line-height:1.06}h2{letter-spacing:-.5px;margin-top:0;font-size:23px}h3{margin:0 0 12px;font-size:17px}p{line-height:1.65}.lede{max-width:700px;color:var(--muted);font-size:17px}.hero{background:var(--green);color:#fff;border-radius:24px;margin:28px 0;padding:30px}.hero .eyebrow{color:var(--accent);margin:0 0 15px}.hero h2{font-size:32px}.hero p{color:#e2ece5}.stats{flex-wrap:wrap;gap:28px;margin:25px 0 5px;display:flex}.stats b{font-size:26px;display:block}.stats span{color:#d5e2d7;font-size:12px}.grid{grid-template-columns:1fr 1fr;gap:18px;display:grid}.card{border:1px solid var(--line);background:#fff;border-radius:18px;margin:14px 0;padding:24px}.tag{color:#3d542d;background:#ebf2df;border-radius:6px;padding:6px 9px;font-size:11px;display:inline-block}.muted,small{color:var(--muted);line-height:1.6}.primary{background:var(--green);color:#fff;border:0;border-radius:10px;padding:14px 18px;font-weight:700}.secondary{border:1px solid var(--line);color:var(--green);background:0 0;border-radius:10px;padding:12px 16px}.controls{flex-wrap:wrap;align-items:end;gap:12px;display:flex}label{font-size:13px;line-height:1.5;display:block}input[type=number],select{color:#18251f;background:#fff;border:1px solid #b8c6bd;border-radius:8px;width:100%;min-height:44px;margin:7px 0 14px;padding:10px;display:block}.controls label{flex:1;min-width:100px}.series{border-bottom:1px solid var(--line);grid-template-columns:42px 1fr 1fr 1fr;align-items:center;gap:12px;padding:12px 0;display:grid}.series b{font-size:24px}.series input,.series select{margin:5px 0}.series label{font-size:12px}.note{background:#edf0e4;border-left:3px solid #a5bd69;margin:20px 0;padding:12px 16px;font-size:14px;line-height:1.6}.alert{background:#fae9e2;border-color:#c06545}.actions{flex-wrap:wrap;gap:12px;margin-top:22px;display:flex}nav{border-top:1px solid var(--line);padding:10px 8px calc(10px + env(safe-area-inset-bottom));z-index:10;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fcfdf8f5;justify-content:center;display:flex;position:fixed;bottom:0;left:0;right:0}nav button{color:var(--muted);background:0 0;border:0;border-radius:10px;padding:13px 22px;font-size:13px}nav button[aria-current]{background:var(--green);color:#fff}details{border-bottom:1px solid var(--line);padding:18px 0}summary{cursor:pointer;font-weight:700;line-height:1.5}details p{max-width:760px}table{border-collapse:collapse;width:100%;font-size:13px}td,th{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:12px 9px;line-height:1.6}th{text-transform:uppercase;letter-spacing:1px;font-size:11px}.table-wrap{overflow-x:auto}progress{width:100%;height:12px;accent-color:var(--accent)}.links{flex-wrap:wrap;gap:16px;font-size:13px;display:flex}.lesson{border:1px solid var(--line);background:#fff;border-radius:14px;margin:12px 0;padding:20px}.video-pending{background:#f2f4ed;border:1px dashed #98aa9c;border-radius:10px;padding:18px;font-size:13px}.doc{max-width:960px;margin:auto;padding:36px 28px}.doc h1{font-size:42px}.doc h2{margin-top:42px}.doc .lead{font-size:20px}.doc ul,.doc ol{padding-left:23px;line-height:1.7}.doc .break{break-before:page}.doc footer{border-top:1px solid var(--line);margin-top:40px;padding-top:20px;font-size:12px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline-offset:4px;outline:3px solid #c89527}@media (width<=600px){header{gap:8px;padding:18px 16px}.logo{font-size:20px}.logo span{padding:5px 7px;font-size:10px}.price{display:none}.switch a{padding:8px 10px}main{padding:0 16px 105px}.hero{padding:24px 20px}.hero h2{font-size:27px}.grid{grid-template-columns:1fr;gap:0}.card{padding:19px}.series{grid-template-columns:25px 1fr 1fr 1fr;gap:7px}.series label{font-size:11px}nav button{padding:12px 14px;font-size:12px}.stats{gap:23px}.doc{padding:20px 16px}.doc h1{font-size:34px}td,th{padding:8px 6px}}@media print{body{background:#fff}.demo,nav,header,.no-print{display:none}.doc{max-width:none;padding:0}h1,h2,h3,summary{break-after:avoid}tr,.lesson,.card{break-inside:avoid}a{color:#18251f;text-decoration:none}p{line-height:1.45}details,details>*{display:block}h1{font-size:32px}}.meta-tag{color:var(--green);margin-left:auto;font-size:12px;font-weight:700}.login{max-width:620px}.login label{margin:15px 0;display:block}.login input{width:100%}.check{align-items:start;gap:12px;margin:20px 0;line-height:1.5;display:flex}.check input{width:20px;min-width:20px;height:20px}.reloj{font-variant-numeric:tabular-nums;font-size:28px}.video{aspect-ratio:16/9;border:0;border-radius:12px;width:100%}nav{padding-bottom:env(safe-area-inset-bottom)}[hidden]{display:none!important}