:root{color-scheme:light;--blue:#152f59;--cream:#f5f1e7;--ink:#26323f;--orange:#b74625;--line:#d5d1c7;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--cream)}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}a{color:var(--blue)}button{cursor:pointer;border:1px solid var(--blue);color:var(--blue);background:transparent;border-radius:5px;padding:12px 16px}button:hover{background:#e4e8eb}button:disabled{opacity:.45;cursor:default}button[aria-pressed=true],.primary{background:var(--blue);color:white}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--orange);outline-offset:4px}[hidden]{display:none!important}.test-banner{background:var(--blue);color:white;text-align:center;font-size:12px;letter-spacing:.08em;padding:9px}.masthead{max-width:1320px;margin:auto;padding:27px 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;font-size:15px;font-weight:800;letter-spacing:.13em;line-height:1.2}.brand-mark{font:38px Georgia,serif;border-bottom:3px solid var(--orange)}nav{display:flex;align-items:center;gap:22px;font-size:14px}nav a{text-decoration:none}nav button{border:0;padding:10px 0}main{max-width:1240px;margin:auto;padding:48px 40px;min-height:65vh}h1,h2{font-family:Georgia,'Times New Roman',serif;color:var(--blue);font-weight:normal}h1{font-size:clamp(34px,4vw,58px);line-height:1.08;margin:14px 0 20px}h2{font-size:30px;line-height:1.2}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:12px;color:var(--orange);font-weight:bold}.muted,.helper{color:#56616b;line-height:1.65}.login-layout{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:start;max-width:1000px;margin:35px auto}.login-intro{padding-top:20px}.login-intro p{max-width:390px;font-size:18px;line-height:1.7}.login-card{border:1px solid var(--line);background:#fffdf8;padding:32px;border-radius:8px;box-shadow:0 12px 34px #152f5908}.login-card h2{margin:0 0 20px}label{display:block;font-size:14px;font-weight:bold;margin:20px 0 10px}input,select{color:var(--ink);background:white;border:1px solid #9dabb5;border-radius:5px;padding:13px;max-width:100%;width:100%}input{font-size:17px}.login-card .primary{width:100%;margin-top:20px;font-weight:bold}.helper{font-size:13px;margin:16px 0 0}.message{min-height:1.6em;font-size:14px;color:var(--orange);line-height:1.6}.google-slot{margin-top:18px}.library-head{max-width:620px;margin-bottom:44px}.library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,290px),1fr));gap:26px}.edition{border:1px solid var(--line);background:#fffdf8;border-radius:6px;overflow:hidden;max-width:400px}.edition-cover{background:var(--blue);color:var(--cream);padding:30px;min-height:220px;display:flex;flex-direction:column;justify-content:space-between}.edition-cover span{font-size:11px;letter-spacing:.18em;text-transform:uppercase}.edition-cover strong{font:36px Georgia,serif;font-weight:normal;max-width:220px}.edition-body{padding:24px}.edition-body h2{margin:0 0 10px;font-size:25px}.edition-body a{display:inline-block;text-decoration:none;margin-top:16px;padding:12px 20px;border-radius:4px}.reader-top{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:24px}.reader-top h1{font-size:clamp(30px,4vw,42px);margin-bottom:0}.save-state{font-size:12px;color:#526455;white-space:nowrap}.toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:10px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;margin-bottom:24px}.toolbar button{padding:10px 13px;font-size:14px}.toolbar .index{flex:1;min-width:150px;max-width:330px;margin-left:auto}.toolbar label{margin:0 0 5px;font-size:11px}.toolbar select{padding:9px;font-size:14px}.reader-stage{min-width:0}.book-scroll{background:#dce1e4;border:1px solid #ccd2d7;border-radius:6px;overflow:auto;padding:24px;text-align:center;max-width:100%}.book-scroll img{display:block;margin:auto;width:auto;max-width:100%;max-height:75vh;box-shadow:0 7px 22px #152f5926}.mobile-article{max-width:650px;margin:0 auto;padding:30px 18px 65px;line-height:1.8;font:20px/1.85 Georgia,serif}.mobile-article h2{font-size:clamp(30px,5vw,43px);line-height:1.15;margin:0 0 30px}.mobile-article p{margin:0 0 25px}.mobile-article img{display:block;width:100%;height:auto;margin:25px 0}.reader-navigation{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:22px}.reader-navigation button{font-size:14px}.page-number{font-size:13px;color:#5d6771}.loading{padding:50px 0;color:#57656f}.skip{position:absolute;left:10px;top:-100px;z-index:5;background:white;padding:15px}.skip:focus{top:10px}footer{border-top:1px solid var(--line);padding:28px 40px;color:#636c72;font-size:12px;display:flex;justify-content:space-between;gap:15px}main:fullscreen{background:var(--cream);overflow:auto;max-width:none;width:100%;padding:30px}.error-card{max-width:600px;line-height:1.7}
@media(max-width:700px){.masthead{padding:20px;gap:10px}.brand{font-size:11px;gap:8px}.brand-mark{font-size:30px}nav{gap:14px;font-size:12px}main{padding:30px 20px}.login-layout{display:block;margin:0}.login-intro{padding:0}.login-intro h1{max-width:320px}.login-intro p{font-size:16px}.login-card{margin-top:28px;padding:25px}.reader-top{display:block}.save-state{display:block;margin-top:15px}.toolbar{gap:8px}.toolbar .index{flex-basis:100%;max-width:none;margin-left:0}.toolbar button{font-size:13px;padding:10px}.book-scroll{padding:10px}.mobile-article{padding:15px 0 40px;font-size:20px}.reader-navigation button{padding:11px}.reader-top h1{font-size:32px}.page-number{font-size:12px}footer{padding:24px 20px;display:block}footer span{display:block;margin-top:10px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Revista: el papel ocupa el visor; las ampliaciones se desplazan dentro de él. */
.spread-options{display:flex;gap:0;border:1px solid var(--blue);border-radius:5px;overflow:hidden}
.toolbar .spread-options button{border:0;border-radius:0;padding:10px 12px}
.spread-options button+button{border-left:1px solid var(--blue)}
.spread-options button:focus-visible{outline-offset:-4px}
.book-scroll{padding:0;max-height:75vh;border:0;border-radius:0;scrollbar-color:#7c8a99 #dce1e4;scrollbar-width:thin;overscroll-behavior:contain}
.book-scroll:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.flipbook-canvas{display:flex;align-items:center;justify-content:center;min-width:100%;position:relative}
.book-zoom{position:absolute;transform-origin:0 0}
.flipbook-book{flex:none;box-shadow:0 8px 28px #152f5926}
.flipbook-book.is-turning{transition:transform 800ms cubic-bezier(.16,1,.3,1)}
.flipbook-book>.stf__wrapper{height:100%}
.flipbook-page{background:#fffdf8;opacity:1;transform-style:flat;isolation:isolate;overflow:hidden;user-select:none}
.flipbook-page.has-paper-curl{overflow:visible}
.has-paper-curl>img{visibility:hidden}
.paper-curl{position:absolute;left:0;pointer-events:none}
.mobile-unit{display:flow-root;scroll-margin-top:64px}
.mobile-unit+.mobile-unit{margin-top:56px;padding-top:40px;border-top:1px solid var(--line)}
main[data-reader-mode=mobile] .toolbar{position:sticky;top:0;z-index:30;background:var(--cream)}
.book-scroll .flipbook-page img{display:block;width:100%;height:100%;max-width:none;max-height:none;margin:0;background:#fffdf8;box-shadow:none;object-fit:contain;pointer-events:none;user-select:none}
.reader-viewport{position:relative;min-width:0}
.reader-viewport.is-magazine{background:#dce1e4;padding-inline:52px}
.reader-arrows{display:flex;align-items:center;justify-content:space-between;margin-top:12px}
.reader-arrow{display:grid;place-items:center;width:44px;height:52px;padding:0;border:0;border-radius:5px;background:var(--blue);color:var(--cream)}
.reader-arrow:hover:not(:disabled){background:#234673}
.reader-arrow:disabled{opacity:1;background:#bdc7d0;color:#526374}
.reader-arrow:focus-visible{outline-offset:3px}
.is-magazine .reader-arrows{position:absolute;inset:0;pointer-events:none;margin:0}
.is-magazine .reader-arrow{position:absolute;top:50%;transform:translateY(-50%);pointer-events:auto}
.is-magazine [data-previous]{left:4px}
.is-magazine [data-next]{right:4px}
.reader-navigation{justify-content:center;margin-top:12px}
.reader-viewport:has(.reader-stage[aria-busy=true])+.reader-navigation .page-number{color:var(--blue)}
.page-number{font-variant-numeric:tabular-nums}
@media(max-width:700px){.toolbar .index{flex-basis:100%}.toolbar .spread-options button{padding:10px}.book-scroll{max-height:75vh}}
@media(prefers-reduced-motion:reduce){.flipbook-book.is-turning{transition:none}}

/* Ambos modos comparten controles superiores; el papel queda debajo. */
.mode-options,.reader-tools{display:flex;align-items:center;gap:6px}
.reader-presentation{display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.reader-tool svg{display:none}
.toolbar .reader-navigation{margin:0;white-space:nowrap}
body[data-reader-mode] .test-banner{padding:5px 12px;font-size:10px;letter-spacing:.04em}
body[data-reader-mode] .masthead{max-width:none;padding:8px 16px;gap:12px}
body[data-reader-mode] .brand{font-size:10px;gap:8px;letter-spacing:.08em}
body[data-reader-mode] .brand-mark{font-size:24px;border-bottom-width:2px}
body[data-reader-mode] nav{gap:20px;font-size:12px}
body[data-reader-mode] nav button{padding:6px 0}
body[data-reader-mode=book]>footer{display:none}
main[data-reader-mode]{max-width:none;width:100%;min-height:0;padding:8px 12px 12px}
main[data-reader-mode]:fullscreen{padding:8px 12px 12px}
main[data-reader-mode] .reader-shell{display:flex;flex-direction:column;background:#dce1e4}
main[data-reader-mode] .reader-top{order:1;display:flex;align-items:center;margin:0;padding:6px 12px;gap:12px;min-height:32px}
main[data-reader-mode] .reader-top h1{font-size:18px;line-height:1.15;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
main[data-reader-mode] .save-state{font-size:11px;display:inline;margin:0;color:#3e5545}
main[data-reader-mode] .reader-viewport{order:3}
main[data-reader-mode=book] .reader-viewport{padding-inline:48px}
main[data-reader-mode] .toolbar{order:2;position:sticky;top:0;z-index:30;gap:8px;padding:6px 10px;margin:0;border:0;background:#dce1e4}
main[data-reader-mode] .toolbar button{min-height:44px;font-size:13px;padding:8px 12px;border:0;border-radius:4px;color:var(--blue)}
main[data-reader-mode] .mode-options{gap:2px}
main[data-reader-mode] .spread-options{border:0;border-radius:4px;gap:2px;background:#cbd3d9}
main[data-reader-mode] .spread-options button+button{border:0}
main[data-reader-mode] .toolbar button[aria-pressed=true]{background:#fffdf8;color:var(--blue);box-shadow:0 1px 3px #152f591a}
main[data-reader-mode] .toolbar button:hover:not(:disabled){background:#c5ced6}
main[data-reader-mode] .toolbar button[aria-pressed=true]:hover{background:#fffdf8}
main[data-reader-mode] .toolbar .index{flex:1 1 160px;min-width:140px;max-width:310px;margin:0 0 0 auto}
main[data-reader-mode] .toolbar .index label,main[data-reader-mode] .reader-tool .control-label{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
main[data-reader-mode] .toolbar select{height:44px;padding:8px 28px 8px 10px;font-size:13px;background:transparent;border-color:#a3afb8}
main[data-reader-mode] .reader-tools{gap:2px}
main[data-reader-mode] .toolbar .reader-tool{display:grid;place-items:center;width:44px;padding:0;flex:none}
main[data-reader-mode] .reader-tool svg{display:block}
main[data-reader-mode] .reader-navigation{min-width:62px;min-height:44px}
main[data-reader-mode] .page-number{font-size:12px;color:#43566c}
main[data-reader-mode] .reader-arrow{height:52px;background:transparent;color:var(--blue);border-radius:4px}
main[data-reader-mode] .reader-arrow:hover:not(:disabled){background:#c5ced6}
main[data-reader-mode] .reader-arrow:disabled{background:transparent;color:#708195}
main[data-reader-mode] .is-magazine [data-previous]{left:2px}
main[data-reader-mode] .is-magazine [data-next]{right:2px}
@media(max-width:700px){
  main[data-reader-mode]{padding:6px}
  main[data-reader-mode] .reader-top{padding:6px 10px}
  main[data-reader-mode] .reader-top h1{font-size:16px}
  main[data-reader-mode] .save-state{font-size:10px}
  main[data-reader-mode] .toolbar{gap:6px;padding:6px}
  main[data-reader-mode] .toolbar button{padding:8px 10px;font-size:12px}
  main[data-reader-mode] .toolbar .index{flex-basis:140px;max-width:none;margin:0}
  main[data-reader-mode] .reader-tools{margin-left:auto}
  main[data-reader-mode] .toolbar .reader-tool{padding:0}
  main[data-reader-mode] .reader-navigation{min-width:52px}
}
@media(max-width:700px){
  main[data-reader-mode] .reader-tools{order:2}
  main[data-reader-mode] .toolbar .index{order:3;flex-basis:calc(100% - 64px)}
  main[data-reader-mode] .reader-navigation{order:4}
}
@media(max-width:480px){
  main[data-reader-mode] .toolbar{display:grid;grid-template-columns:minmax(120px,1fr) 52px 90px}
  main[data-reader-mode] .reader-presentation{grid-column:1 / -1;grid-row:1;justify-content:space-between;gap:6px}
  main[data-reader-mode] .toolbar .index{grid-column:1;grid-row:2;min-width:0;order:0}
  main[data-reader-mode] .reader-navigation{grid-column:2;grid-row:2;order:0}
  main[data-reader-mode] .reader-tools{grid-column:3;grid-row:2;justify-content:flex-end;margin:0;order:0}
}