:root{
 --etr-fs:19px;--etr-bg:#f1ece3;--etr-paper:#fffdf8;--etr-ink:#24231f;
 --etr-muted:#756f65;--etr-line:#d8d0c4;--etr-accent:#2f6f46;--etr-measure:620px
}
html[data-etr-theme="dark"]{
 --etr-bg:#171817;--etr-paper:#20221f;--etr-ink:#ece9e1;--etr-muted:#aaa59b;--etr-line:#3a3b38
}
*{box-sizing:border-box}
.etr-reader{margin:0!important;background:var(--etr-bg)!important;color:var(--etr-ink)!important;font-family:Georgia,"Times New Roman",serif!important}
.etr-toolbar{position:fixed;z-index:9999;top:0;left:0;right:0;height:58px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 20px;background:color-mix(in srgb,var(--etr-paper) 96%,transparent);border-bottom:1px solid var(--etr-line);font-family:Arial,sans-serif;backdrop-filter:blur(10px)}
.etr-toolbar a{color:var(--etr-ink);text-decoration:none}.etr-back{font-size:14px}.etr-title{font-size:13px;font-weight:600;white-space:nowrap;display:flex;align-items:center;gap:9px}.etr-title-mark{font-size:10px;letter-spacing:.08em;border:1px solid var(--etr-line);border-radius:50%;width:28px;height:28px;display:inline-grid;place-items:center}
.etr-controls{justify-self:end;display:flex;gap:6px}.etr-controls button{border:1px solid var(--etr-line);background:transparent;color:var(--etr-ink);height:34px;min-width:38px;border-radius:18px;cursor:pointer}.etr-controls button:hover{background:var(--etr-bg)}
.etr-progress{position:fixed;z-index:10000;top:57px;left:0;right:0;height:2px}.etr-progress i{display:block;width:0;height:100%;background:var(--etr-accent)}
.etr-page{box-sizing:border-box;width:min(calc(100% - 32px),790px);min-height:100vh;margin:88px auto 52px;padding:clamp(38px,7vw,72px) clamp(28px,9vw,84px);background:var(--etr-paper);box-shadow:0 10px 40px rgba(0,0,0,.055)}
.etr-kicker{font:11px Arial,sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--etr-muted)}
.etr-page h1{font-family:Arial,sans-serif;font-size:clamp(32px,5vw,44px);line-height:1.08;margin:.5em 0 1.65em;color:var(--etr-ink)}
.etr-text{max-width:var(--etr-measure);margin:auto;font-size:var(--etr-fs);line-height:1.76;hyphens:none;overflow-wrap:normal;word-break:normal}
.etr-text p{margin:0 0 1.12em;text-indent:1.35em}
.etr-text p:first-child{text-indent:0}
.etr-text p:first-child::first-letter{font-size:3.45em;float:left;line-height:.78;padding:.09em .11em 0 0}
.etr-text em{font-style:italic}
.etr-text figure{margin:2.5em auto;text-indent:0}.etr-text img{display:block;max-width:100%;height:auto;margin:auto;border-radius:2px}.etr-text figcaption{margin:.7em auto 0;text-align:center;font:12px/1.45 Arial,sans-serif;color:var(--etr-muted)}
.etr-text .alignwide{max-width:720px}.etr-text .alignfull{max-width:none;width:calc(100% + 40px);margin-left:-20px}
.etr-nav{max-width:var(--etr-measure);margin:4em auto 0;padding-top:1.5em;border-top:1px solid var(--etr-line);display:grid;grid-template-columns:1fr auto 1fr;gap:15px;font:13px Arial,sans-serif;color:var(--etr-muted)}.etr-nav div:last-child{text-align:right}.etr-nav a{color:var(--etr-ink);text-decoration:none}
.etr-toast{position:fixed;z-index:10001;right:16px;bottom:16px;padding:10px 14px;border-radius:8px;background:var(--etr-ink);color:var(--etr-paper);font:13px Arial,sans-serif;opacity:0;transform:translateY(8px);transition:.2s}.etr-toast.show{opacity:1;transform:none}

/* Pagina pubblica dell'opera */
.etr-library{margin:0;background:#f1ece3;color:#24231f;font-family:Arial,sans-serif}
.etr-library-bar{height:64px;border-bottom:1px solid #d8d0c4;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(18px,5vw,64px);background:#fffdf8;font-size:13px}.etr-library-bar a{color:#24231f;text-decoration:none}
.etr-book-landing{max-width:1100px;margin:auto;padding:clamp(42px,7vw,90px) clamp(20px,5vw,60px)}
.etr-book-hero{display:grid;grid-template-columns:minmax(220px,340px) 1fr;gap:clamp(42px,8vw,100px);align-items:center}
.etr-book-cover img,.etr-cover-placeholder{width:100%;aspect-ratio:2/3;object-fit:cover;box-shadow:0 18px 45px rgba(0,0,0,.14)}
.etr-cover-placeholder{background:#171817;color:#f5f0e7;padding:32px;display:flex;flex-direction:column;justify-content:space-between}.etr-cover-placeholder span{font-size:12px;letter-spacing:.18em}.etr-cover-placeholder strong{font:32px/1.05 Georgia,serif}
.etr-book-info h1{font:clamp(40px,6vw,70px)/1.02 Georgia,serif;margin:.28em 0 .45em}.etr-description{font:18px/1.65 Georgia,serif;max-width:620px}.etr-start{display:inline-block;margin-top:24px;padding:13px 18px;background:#24231f;color:#fffdf8;text-decoration:none;border-radius:2px}
.etr-index{margin-top:clamp(70px,10vw,120px)}.etr-index-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid #cfc6b9}.etr-index-head h2{font:34px Georgia,serif;margin:0 0 18px}.etr-index-head span{font-size:12px;color:#756f65}.etr-index ol{list-style:none;margin:0;padding:0}.etr-index li{border-bottom:1px solid #d8d0c4}.etr-index li a{display:grid;grid-template-columns:60px 1fr 30px;align-items:center;gap:18px;padding:22px 0;color:#24231f;text-decoration:none}.etr-index li a:hover strong{text-decoration:underline}.etr-ch-no{font-size:12px;color:#756f65;letter-spacing:.1em}.etr-arrow{text-align:right}

@media(max-width:650px){
 .etr-toolbar{padding:0 10px;grid-template-columns:auto 1fr auto}.etr-title{display:none}.etr-back span{display:none}
 .etr-controls{gap:3px}.etr-controls button{min-width:34px;height:32px;font-size:13px}
 .etr-page{width:100%;margin:58px 0 0;padding:42px 22px 60px;box-shadow:none}
 .etr-page h1{margin-bottom:1.35em}.etr-text{line-height:1.68}.etr-text p{margin-bottom:1.05em}
 .etr-nav{grid-template-columns:1fr 1fr}.etr-nav>span{display:none}
 .etr-book-hero{grid-template-columns:1fr}.etr-book-cover{max-width:280px;margin:auto}.etr-book-info{text-align:left}
 .etr-book-info h1{font-size:42px}.etr-index-head{align-items:flex-end}.etr-index li a{grid-template-columns:42px 1fr 22px}
}

.etr-privacy-footer{
 max-width:1100px;margin:0 auto;padding:24px clamp(20px,5vw,60px) 36px;
 border-top:1px solid var(--etr-line,#d8d0c4);
 display:flex;gap:12px;justify-content:center;align-items:center;flex-wrap:wrap;
 font:11px/1.45 Arial,sans-serif;color:var(--etr-muted,#756f65)
}
.etr-privacy-footer a{color:inherit;text-decoration:underline;text-underline-offset:3px}
.etr-reader .etr-privacy-footer{max-width:790px;margin:0 auto 32px;border-top:0}
@media(max-width:650px){
 .etr-privacy-footer{padding:20px 22px 28px;text-align:center}
}

/* 1.0 — rifinitura pagina Opera */
.etr-book-cover{
  display:flex;
  align-items:center;
  justify-content:center;
}
.etr-book-cover img{
  width:auto;
  max-width:100%;
  height:auto;
  max-height:min(72vh,720px);
  aspect-ratio:auto;
  object-fit:contain;
  box-shadow:0 18px 45px rgba(0,0,0,.14);
}
.etr-book-info h1{
  color:#6f3f3a;
}
.etr-book-info .etr-kicker{
  color:#756f65;
}
@media(max-width:650px){
  .etr-book-cover img{
    max-height:62vh;
    width:auto;
  }
  .etr-book-info h1{
    color:#6f3f3a;
  }
}