:root{color-scheme:dark;--bg:#080e13;--surface:#10171d;--text:#eee5d0;--muted:#bdb5a7;--accent:#ceb17a;--line:rgba(206,177,122,.24)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:94px}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 "Segoe UI",Arial,sans-serif}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}button:disabled{cursor:default}button:hover,a:hover{color:var(--accent)}[hidden]{display:none!important}.skip{position:fixed;top:-100px;left:20px;z-index:50;background:var(--text);color:var(--bg);padding:12px}.skip:focus{top:12px}.site-header{height:88px;position:absolute;inset:0 0 auto;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:0 5.5%;background:rgba(5,11,16,.67);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.brand{font:29px/1.2 Georgia,serif;letter-spacing:-.7px}.site-header nav{display:flex;gap:34px;align-items:center;font-size:12px;letter-spacing:1px}.site-header nav a[aria-current]{color:var(--accent)}.icon-button{display:none;background:none;border:0;font-size:24px;min-width:44px;min-height:44px}.hero{position:relative;isolation:isolate;min-height:840px;height:min(950px,100svh);overflow:hidden;background:#080e13}.room{position:absolute;inset:-2%;z-index:-4;background:url('assets/gabinete.png') 60% 48%/cover no-repeat;transform:translate3d(var(--room-x,0px),var(--room-y,0px),0) scale(1.02);filter:brightness(.51) saturate(.82)}.hero:before{content:"";position:absolute;inset:0;z-index:-3;background:linear-gradient(90deg,#060d13 0%,#070e13ed 18%,#070e1396 47%,#070e1308 78%),linear-gradient(0deg,#070d13 1%,transparent 48%,#080e131a)}.hero:after{content:"";pointer-events:none;position:absolute;inset:0;z-index:7;box-shadow:inset 0 0 130px #04080b66}.lamp-glow{position:absolute;inset:3% -7% 15% 42%;z-index:-2;background:radial-gradient(ellipse at 66% 25%,#e9b66924,transparent 61%);mix-blend-mode:screen;opacity:.9;pointer-events:none}.scene-stage{position:absolute;inset:115px -5% 66px 34%;z-index:1;touch-action:pan-y}canvas{display:block;width:100%;height:100%;cursor:grab}canvas:active{cursor:grabbing}.hero-copy{position:relative;z-index:5;padding:210px 0 135px 5.5%;width:46%;pointer-events:none}.hero-copy button{pointer-events:auto}.eyebrow{font-size:10px;text-transform:uppercase;letter-spacing:3px;color:var(--accent);margin:0 0 25px}.hero h1{font:clamp(64px,6.4vw,108px)/1 Georgia,serif;letter-spacing:-3px;margin:0 0 26px}.hero-deck{font:clamp(27px,2.5vw,38px)/1.2 Georgia,serif;letter-spacing:-.5px;margin:0 0 25px}.hero-description{font-size:14px;line-height:1.8;color:var(--muted);margin:0 0 34px}.hero-actions{display:flex;flex-direction:column;align-items:flex-start;gap:19px}.primary{display:inline-flex;gap:30px;align-items:center;justify-content:space-between;min-height:53px;padding:14px 23px;border:1px solid #d6b77b;border-radius:4px;background:linear-gradient(120deg,#cdb17d,#ad8d52);color:#0d141a;font-size:13px;font-weight:600;letter-spacing:.35px;box-shadow:0 8px 22px #0004;transition:transform .25s,box-shadow .25s}.primary:hover{color:#0d141a;transform:translateY(-2px);box-shadow:0 12px 26px #0007}.text-button{display:inline-flex;align-items:center;gap:20px;padding:7px 0;border:0;border-bottom:1px solid #b3a27a77;background:none;font-size:12px;letter-spacing:.5px;min-height:38px}.hero-bottom{position:absolute;z-index:8;bottom:25px;left:5.5%;right:5.5%;border-top:1px solid var(--line);padding-top:23px;display:flex;align-items:center;gap:40px;font-size:11px;letter-spacing:.7px;color:var(--muted)}.hero-bottom a{color:var(--text)}.hero-bottom a span{margin-left:38px}.hero-bottom button{margin-left:auto;background:#080e1355;border:1px solid var(--line);border-radius:50%;width:42px;height:42px}.object-caption{position:absolute;right:6.5%;bottom:132px;z-index:6;display:flex;gap:15px;align-items:center;color:var(--text);font:14px/1.4 Georgia,serif;pointer-events:none}.object-caption small{font:10px/1.6 "Segoe UI",sans-serif;color:var(--muted);letter-spacing:.3px}.caption-line{height:1px;width:50px;background:var(--accent)}.unit-preview{position:relative;z-index:6;margin-left:5.5%;padding:144px 0 100px;width:40%;max-width:545px;animation:reveal .6s both}.preview-top{display:flex;align-items:center;justify-content:space-between}.preview-top .eyebrow{margin:0}.close-button{background:none;border:1px solid var(--line);border-radius:50%;height:37px;width:37px;font-size:22px}.unit-preview h2{font:34px/1.13 Georgia,serif;letter-spacing:-.5px;margin:24px 0 30px;max-width:420px}.preview-lessons{list-style:none;padding:0;margin:0}.preview-lessons li{border-top:1px solid var(--line)}.preview-lessons li:last-child{border-bottom:1px solid var(--line)}.preview-lessons button,.preview-lessons .locked{display:grid;grid-template-columns:27px 1fr 16px;text-align:left;align-items:center;gap:12px;width:100%;padding:15px 3px;border:0;background:none;color:var(--text);font-size:13px;line-height:1.4;transition:padding-left .2s,background .2s}.preview-lessons button:hover{padding-left:10px;color:var(--accent);background:#ceb17a09}.preview-lessons span:first-child{font:17px Georgia,serif;color:var(--accent)}.preview-lessons span:last-child{color:var(--accent)}.preview-lessons .locked{color:var(--muted)}#preview-product{margin-top:20px}.curriculum{position:relative;max-width:1380px;margin:auto;display:grid;grid-template-columns:.8fr 1.6fr;gap:10%;padding:100px 5.5% 110px;background:radial-gradient(ellipse at 0 0,#32332a30,transparent 40%)}.curriculum-intro h2{font:44px/1.15 Georgia,serif;margin:0 0 24px;letter-spacing:-.8px}.curriculum-intro>p:last-child{font-size:14px;color:var(--muted);max-width:290px}.unit-list{border-top:1px solid var(--line)}.unit-list details{border-bottom:1px solid var(--line)}.unit-list summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:35px 1fr 18px;gap:16px;align-items:center;padding:22px 0}.unit-list summary::-webkit-details-marker{display:none}.unit-list .number{font:22px Georgia,serif;color:var(--accent)}.unit-list small{display:block;font-size:10px;letter-spacing:1px;color:var(--muted);margin-bottom:5px}.unit-list strong{font-size:14px;font-weight:400}.unit-list .plus{font:22px Georgia,serif;color:var(--accent);transition:transform .3s}.unit-list details[open] .plus{transform:rotate(45deg)}.unit-list ol{list-style:none;padding:0 0 12px 51px;margin:0}.unit-list li{margin:0 0 12px;color:var(--muted);font-size:13px}.unit-list li button{border:0;background:none;text-align:left;padding:4px 0;color:inherit;font-size:inherit}.unit-list li button:hover{color:var(--accent)}.unit-list .unit-open{margin:0 0 24px 51px}.access-label{font-size:10px;color:var(--accent);letter-spacing:.8px;margin:0 0 14px 51px}footer{padding:30px 5.5%;border-top:1px solid var(--line);display:flex;gap:24px;align-items:center;justify-content:space-between;background:#070d12}.footer-brand{font:18px Georgia,serif;color:var(--accent)}footer>div{display:flex;gap:25px;font-size:10px;color:var(--muted)}.reading-room{position:fixed;inset:0;z-index:-1;background:linear-gradient(90deg,#080e13fa 0%,#080e13f7 65%,#080e13d9),url('assets/gabinete.png') center/cover;pointer-events:none}.reading-top{padding:127px 5.5% 25px;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted)}.reading-layout{max-width:1260px;margin:0 auto;display:grid;grid-template-columns:255px minmax(0,720px);gap:70px;padding:36px 40px 110px}.reading-sidebar{position:sticky;top:30px;align-self:start}.reading-sidebar summary{font-size:10px;text-transform:uppercase;letter-spacing:2px;color:var(--accent);list-style:none;pointer-events:none}.reading-sidebar summary span{display:none}.reading-sidebar p{font:23px/1.3 Georgia,serif;margin:23px 0}.reading-sidebar ol{list-style:none;margin:0;padding:0}.reading-sidebar li{border-top:1px solid var(--line)}.reading-sidebar button{padding:13px 0;width:100%;border:0;background:none;display:grid;grid-template-columns:25px 1fr;text-align:left;gap:8px;font-size:12px;line-height:1.6;color:var(--muted)}.reading-sidebar button[aria-current]{color:var(--accent)}.reading-paper{min-width:0;padding:0 0 0 30px;border-left:1px solid var(--line)}.reading-paper h1{font:clamp(35px,3.4vw,54px)/1.11 Georgia,serif;letter-spacing:-.8px;margin:0 0 42px;max-width:23ch}.reading-paper .eyebrow{margin-bottom:20px}.prose{color:#ddd7ca;font-size:17px;line-height:1.85;overflow-wrap:anywhere}.prose p{margin:0 0 1.6em}.prose h2{font:29px/1.25 Georgia,serif;color:var(--text);margin:52px 0 24px;border-top:1px solid var(--line);padding-top:26px}.prose table{display:block;max-width:100%;overflow:auto;border-collapse:collapse;margin:28px 0;font-size:14px}.prose td,.prose th{padding:12px;border:1px solid var(--line);min-width:115px}.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.exercise{background:linear-gradient(120deg,#37312544,#11192188);border:1px solid var(--line);border-radius:8px;padding:28px;margin:50px 0}.exercise h2{margin:0 0 24px;padding:0;border:0}.exercise p:last-child{margin-bottom:0}.lesson-pagination{display:flex;justify-content:space-between;gap:30px;border-top:1px solid var(--line);padding-top:24px;margin-top:48px}.lesson-pagination button{flex:1;background:none;border:0;padding:0;text-align:left;font-size:12px;line-height:1.5}.lesson-pagination button:last-child{text-align:right}.lesson-pagination small{display:block;color:var(--accent);font-size:10px;letter-spacing:1px;margin-bottom:5px}.transitioning{opacity:0;transform:translateY(5px)}#academy-view,#reading-view{transition:opacity .35s,transform .35s}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}@keyframes reveal{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1600px){.hero{max-height:950px}.hero-copy{padding-top:235px}.scene-stage{inset:80px 0 60px 35%}}
@media(max-width:1000px){.hero{height:850px;min-height:850px}.hero-copy{width:49%;padding-top:195px}.hero h1{font-size:76px}.hero-deck{font-size:31px}.scene-stage{left:36%;right:-14%;top:175px;bottom:100px}.unit-preview{width:43%;padding-top:137px}.unit-preview h2{font-size:29px}.reading-layout{gap:35px;grid-template-columns:210px minmax(0,1fr);padding-inline:30px}.reading-paper{padding-left:22px}.site-header nav{gap:23px}.object-caption{right:5%;bottom:124px;max-width:240px}.curriculum{gap:7%}}
@media(max-width:700px){.site-header{height:76px;padding:0 24px}.brand{font-size:24px}.icon-button{display:block}.site-header nav{display:none;position:absolute;top:75px;left:0;right:0;background:#080e13f5;padding:20px 24px;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:26px}.site-header nav.open{display:flex}.hero{height:950px;min-height:950px}.room{background-position:67% 38%;filter:brightness(.48) saturate(.85)}.hero:before{background:linear-gradient(180deg,#071018ed 0%,#080e13aa 39%,#080e1344 60%,#080e13 98%)}.hero-copy{padding:125px 24px 0;width:100%;max-width:430px}.hero h1{font-size:65px;letter-spacing:-2px;margin-bottom:20px}.hero-deck{font-size:28px;margin-bottom:20px}.hero-description{font-size:13px;margin-bottom:24px}.hero-copy .eyebrow{font-size:9px;letter-spacing:2px;margin-bottom:22px}.hero-actions{gap:12px}.primary{font-size:12px;min-height:50px}.scene-stage{inset:410px -18% 64px -12%;opacity:1}.object-caption{bottom:128px;right:26px;max-width:none;font-size:12px}.object-caption small{font-size:9px}.caption-line{width:28px}.hero-bottom{bottom:23px;left:24px;right:24px;gap:10px;flex-wrap:wrap;font-size:10px;padding-top:20px}.hero-bottom>span{display:none}.hero-bottom a span{margin-left:15px}.hero-bottom button{width:40px;height:40px}.unit-preview{margin:0;padding:113px 24px 0;width:100%;max-width:none}.unit-preview h2{font-size:31px;max-width:290px;margin:22px 0}.preview-lessons button,.preview-lessons .locked{padding:13px 0;font-size:12px;gap:10px;grid-template-columns:24px 1fr 14px}.hero.book-open .scene-stage{opacity:.32;inset:410px -32% 35px 0}.hero.book-open .object-caption{display:none}.hero.book-open:before{background:linear-gradient(180deg,#071018eb,#080e13b5 65%,#080e13)}.curriculum{display:block;padding:60px 24px 70px}.curriculum-intro{margin-bottom:37px}.curriculum-intro h2{font-size:39px}.curriculum-intro h2 br{display:none}.curriculum-intro>p:last-child{max-width:360px}.unit-list summary{gap:10px;grid-template-columns:32px 1fr 18px;padding:20px 0}.unit-list strong{font-size:13px}.unit-list small{font-size:9px}.unit-list ol{padding-left:42px}.unit-list .unit-open,.access-label{margin-left:42px}footer{padding:26px 24px;display:block}.footer-brand{font-size:15px}footer>div{margin-top:20px;gap:22px}.reading-top{padding:112px 24px 21px;gap:15px;align-items:flex-start}.reading-top span{font-size:9px;padding-top:10px}.reading-top .text-button{font-size:11px;letter-spacing:0}.reading-layout{display:block;padding:12px 24px 65px}.reading-sidebar{position:static;margin:0 0 35px}.reading-sidebar details{border:1px solid var(--line);border-radius:5px;padding:0 17px}.reading-sidebar summary{pointer-events:auto;cursor:pointer;padding:16px 0;display:flex;justify-content:space-between;font-size:9px}.reading-sidebar summary span{display:block}.reading-sidebar p{font-size:21px;margin-top:10px}.reading-sidebar button{font-size:12px}.reading-paper{border:0;padding:0}.reading-paper h1{font-size:37px;margin-bottom:32px}.reading-paper .eyebrow{font-size:9px;letter-spacing:2px}.prose{font-size:16px;line-height:1.85}.prose h2{font-size:27px}.exercise{padding:22px 18px;margin-inline:-4px}.lesson-pagination{gap:20px;flex-direction:column}.lesson-pagination button:last-child{text-align:left}.reading-room{background:linear-gradient(90deg,#080e13f7,#080e13f2),url('assets/gabinete.png') 65% center/cover}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.room{transform:none}}
.reading-reference{border-block:1px solid var(--line);margin:32px 0}.reading-reference summary{list-style:none;display:flex;justify-content:space-between;gap:20px;padding:18px 0;font-size:12px;color:var(--accent);cursor:pointer}.reading-reference summary::-webkit-details-marker{display:none}.reading-reference summary span{font-size:18px;line-height:1;transition:transform .2s}.reading-reference[open] summary span{transform:rotate(45deg)}.reading-reference .prose{padding-top:20px;font-size:15px}
.reading-sidebar summary{pointer-events:auto;cursor:pointer}
/* Notebook v2: a photographic object integrated into the approved cabinet. */
.room{background:none;inset:-2%;filter:brightness(.82) saturate(.9);will-change:transform}
.room-image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:60% 48%;pointer-events:none}
.open-photo{opacity:0;transition:opacity .85s cubic-bezier(.22,.61,.36,1)}
.hero.book-open[data-open-ready="true"] .open-photo{opacity:1}
.hero:before{background:linear-gradient(90deg,#060d13f7 0%,#070e13ed 18%,#070e13a1 39%,#070e1326 57%,transparent 77%),linear-gradient(0deg,#070d13 1%,transparent 32%,#080e130d)}
.lamp-glow{opacity:.28;animation:lamp-breath 9s ease-in-out infinite alternate}
.notebook-object{position:absolute;z-index:2;left:66%;top:40%;width:27%;height:42%;background:none;border:0;border-radius:25%;transform:rotate(15deg);cursor:pointer}
.notebook-object:focus-visible{outline-offset:12px;outline:1px solid var(--accent)}
.hero.book-open .notebook-object{left:46%;width:47%;top:33%;height:48%}
.object-caption{right:6.5%;bottom:111px}
.hero[data-motion="paused"] .lamp-glow{animation-play-state:paused}
.hero[data-motion="paused"] .open-photo{transition:none}
@keyframes lamp-breath{from{opacity:.18}to{opacity:.3}}
@media(max-width:1000px) and (min-width:701px){.room-image{object-position:69% 48%}.notebook-object{left:65%;width:32%}.hero.book-open .notebook-object{left:49%;width:48%}}
@media(max-width:700px){
  .room{inset:0;filter:brightness(.82) saturate(.88);transform:none;background:#080e13;will-change:auto}
  .room-image{inset:auto 0 85px;width:100%;height:680px;object-position:85% center;object-fit:cover}
  .hero:before{background:linear-gradient(180deg,#071018 0%,#071018f7 25%,#080e13b3 43%,#080e1322 58%,#080e1338 77%,#080e13 98%)}
  .hero.book-open:before{background:linear-gradient(180deg,#071018 0%,#071018f2 30%,#080e13c9 58%,#080e1370 79%,#080e13 98%)}
  .hero-copy{padding-top:121px}
  .notebook-object{left:24%;top:56%;width:70%;height:28%;transform:rotate(15deg)}
  .hero.book-open .notebook-object{left:7%;top:59%;width:87%;height:26%}
  .object-caption{bottom:123px;right:24px}
  .lamp-glow{inset:24% -30% 12% 8%}
  .hero-actions .text-button{background:linear-gradient(90deg,#080e13a8,#080e1350);text-shadow:0 1px 5px #000;padding-inline:5px;margin-left:-5px}
}
@media(prefers-reduced-motion:reduce){.open-photo{transition:none}.lamp-glow{animation:none}}
.hero h1:focus,.unit-preview h2:focus,.curriculum-intro h2:focus{outline:none}