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iframe{width:100%;height:100%;border:0}.reader-close{position:absolute;top:8px;inset-inline-end:8px;z-index:2;width:36px;height:36px;border:0;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;font-size:22px;cursor:pointer}.native-reader{position:relative;width:min(1200px,100%);height:min(92vh,950px);flex-direction:column}.flip-wrap,.native-reader{display:flex;align-items:center;justify-content:center}.flip-wrap{flex:1 1;width:100%;overflow:hidden;min-height:0}.flip-sizer{height:100%;max-width:100%;margin:0 auto}.flip-sizer .flipbook{width:100%;margin:0 auto}.flip-page{background:#fff;box-shadow:0 0 14px rgba(0,0,0,.35);overflow:hidden}.flip-page img{width:100%;height:100%;object-fit:contain;display:block}.reader-loading{color:#fff;font-size:32px;letter-spacing:4px}.flip-img-wrap{position:relative;width:100%;height:100%;display:grid;place-items:center;background:#f4f2f7}.flip-img{width:100%;height:100%;object-fit:contain;display:block;transition:opacity .35s ease}.flip-spinner{position:absolute;width:34px;height:34px;border-radius:50%;border:3px solid rgba(79,70,229,.2);border-top:3px solid var(--purple,#4f46e5);animation:flip-spin .8s linear infinite}@keyframes flip-spin{to{transform:rotate(1turn)}}.flip-blank{width:100%;height:100%;display:grid;place-items:center;background:linear-gradient(155deg,#fbfaff,#efeaf8);box-shadow:inset 0 0 60px rgba(79,70,229,.05)}.flip-blank-mark{width:42%;max-width:130px;height:auto;opacity:.06}.flip-info{width:100%;height:100%;background:linear-gradient(160deg,#fff,#f4f0ff);display:grid;place-items:center;text-align:center;padding:24px}.flip-info-inner{width:100%}.flip-info-title{font-size:clamp(20px,4.5vh,34px);font-weight:800;color:var(--ink,#2d2f6b);margin:0 0 18px;line-height:1.25}.flip-info-line{font-size:clamp(15px,3vh,20px);color:var(--ink-soft,#555);margin:0 0 8px}.flip-info-line strong{color:var(--ink,#2d2f6b);font-weight:700}.flip-info-illus{font-style:italic}.flip-page .flip-info-logo{width:calc(50% + 24px);max-width:220px;height:auto;margin:22px auto 10px;display:block;opacity:.9}.flip-info-brand{margin-top:6px;font-size:13px;color:var(--ink-soft,#777)}.flip-info-brand a,.flip-info-brand span{color:var(--purple,#4f46e5);font-weight:700;text-decoration:none}.flip-info-brand a:hover{text-decoration:underline}.reader-bar{width:100%;box-sizing:border-box;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:12px;padding:10px 16px;background:hsla(0,0%,100%,.1);border:1px solid hsla(0,0%,100%,.14);border-radius:14px;color:#fff}.reader-bar-meta{display:flex;flex:1 1;flex-direction:column;min-width:0;line-height:1.3}.reader-bar-meta .rb-title{font-size:18px;font-weight:800;max-width:46vw}.reader-bar-meta .rb-author,.reader-bar-meta .rb-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.reader-bar-meta .rb-author{font-size:13px;color:hsla(0,0%,100%,.75)}.reader-bar-controls{display:flex;align-items:center;gap:14px}.reader-bar-controls .rb-count{font-size:15px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;min-width:56px;text-align:center}.reader-bar-controls button{width:48px;height:48px;border:0;border-radius:50%;background:hsla(0,0%,100%,.18);color:#fff;font-size:26px;cursor:pointer;line-height:1;display:grid;place-items:center;transition:background .12s ease,transform .12s ease}.reader-bar-controls button:hover{background:hsla(0,0%,100%,.34);transform:translateY(-1px)}.reader-bar-controls .narr-btn{width:auto;min-width:48px;padding:0 16px;gap:8px;display:inline-flex;align-items:center;justify-content:center;background:var(--orange);color:#fff;font-size:15px;font-weight:700;box-shadow:0 3px 12px rgba(249,115,22,.45)}.reader-bar-controls .narr-btn:hover{background:#ea6a0a}.reader-bar-controls .narr-btn svg{flex:0 0 auto}.narr-label{white-space:nowrap}.reader-bar-controls .narr-on{animation:narr-pulse 1.8s ease-in-out infinite}@keyframes narr-pulse{0%,to{box-shadow:0 3px 12px rgba(249,115,22,.45)}50%{box-shadow:0 3px 22px rgba(249,115,22,.85)}}.reader-close-bar{-webkit-margin-start:6px;margin-inline-start:6px;background:hsla(0,0%,100%,.12)!important;font-size:24px!important}.reader-close-bar:hover{background:rgba(255,80,80,.55)!important}.reader-bar-controls .fs-btn{font-size:20px}@media (max-width:560px){.reader-bar{padding:8px 12px}.reader-bar-meta .rb-title{font-size:15px;max-width:40vw}.reader-bar-controls{gap:8px}.reader-bar-controls button{width:42px;height:42px;font-size:22px}.narr-label{display:none}.reader-bar-controls .narr-btn{width:42px;min-width:42px;padding:0}}.reader-embed{width:min(1100px,100%);margin:28px auto}.reader-embed:not(.is-fullscreen) .native-reader{height:min(72vh,640px)}.reader-embed:not(.is-fullscreen) .reader-bar{margin-bottom:0;margin-top:12px;color:var(--ink);background:#f6f3fc;border-color:var(--line)}.reader-embed:not(.is-fullscreen) .reader-bar-meta .rb-author{color:var(--ink-soft)}.reader-embed:not(.is-fullscreen) .reader-bar-controls button{background:#eae4f6;color:var(--ink)}.reader-embed:not(.is-fullscreen) .reader-bar-controls button:hover{background:#ddd3f0}.reader-embed:not(.is-fullscreen) .reader-bar-controls .narr-btn{background:var(--orange);color:#fff}.reader-embed:not(.is-fullscreen) .reader-bar-controls .narr-btn:hover{background:#ea6a0a}.reader-embed.is-fullscreen{position:fixed;inset:0;z-index:1000;margin:0;width:auto;background:rgba(11,15,38,.92);display:grid;place-items:center;padding:16px}.reader-embed:fullscreen{padding:24px}.reader-embed:-webkit-full-screen{padding:24px}.reader-embed.is-fullscreen .reader-bar{order:-1}.reader-embed.is-fullscreen .native-reader{width:min(1800px,100%);height:min(96vh,1150px)}@supports (width:1cqw){.reader-embed{container-type:inline-size}.reader-embed:not(.is-fullscreen) .native-reader{height:min(72vh,640px,calc(100cqw / var(--book-ar, 2) + 84px))}.reader-embed.is-fullscreen .native-reader{height:min(96vh,1150px,calc(min(1800px, 100cqw) / var(--book-ar, 2) + 84px))}@container (max-width: 559px){.flip-sizer{aspect-ratio:var(--page-ar,1)!important}.reader-embed:not(.is-fullscreen) .native-reader{height:min(640px,calc(100cqw / var(--page-ar, 1) + 72px))}.reader-embed.is-fullscreen .native-reader{height:min(96vh,1150px,calc(100cqw / var(--page-ar, 1) + 72px))}}}.featured{max-width:1000px;margin:8px auto 0;padding:8px 16px}.featured-card{display:flex;gap:24px;align-items:center;flex-wrap:wrap;background:linear-gradient(135deg,#fff,#f6f0ff);border:1px solid var(--line);border-radius:18px;padding:20px 24px;box-shadow:var(--shadow)}.featured-cover{flex:0 0 auto}.featured-cover img{width:170px;aspect-ratio:3/4;object-fit:cover;border-radius:12px;box-shadow:0 8px 20px rgba(45,47,107,.2)}.featured-body{flex:1 1 300px;min-width:260px}.featured-label{font-size:12px;font-weight:700;letter-spacing:.5px;color:var(--orange);text-transform:uppercase}.featured-title{font-size:clamp(20px,3vw,26px);font-weight:800;margin:6px 0 4px}.featured-author{color:var(--ink-soft);font-size:14px;margin:0 0 10px}.featured-facts{margin-bottom:12px}.featured-summary{line-height:1.55;color:var(--ink-soft);margin:0 0 16px}.topics-section{max-width:1000px;margin:28px auto 0;padding:0 16px}.topic-cards{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}.topic-card{display:flex;flex-direction:column;align-items:center;gap:8px;width:112px;padding:16px 8px;background:var(--card-bg);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}.topic-card:hover{transform:translateY(-3px);box-shadow:0 8px 22px rgba(0,0,0,.14);border-color:#b9a7e6}.topic-card-active{border-color:var(--purple);background:#f6f0ff}.topic-emoji{font-size:30px;line-height:1}.topic-name{font-size:13px;font-weight:600;text-align:center}.parent-value{margin-top:40px;padding:44px 16px;text-align:center;background:linear-gradient(135deg,#f6f0ff,#eef1ff);border-top:1px solid #e3e6f5;border-bottom:1px solid #e3e6f5}.parent-value h2{font-size:clamp(20px,3.5vw,26px);font-weight:800;margin:0}.parent-value>p{max-width:680px;margin:12px auto 0;color:var(--ink-soft);line-height:1.55}.value-cards{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin-top:26px}.value-card{display:flex;flex-direction:column;align-items:center;gap:10px;width:180px;padding:22px 16px;background:var(--card-bg);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.value-emoji{font-size:34px;line-height:1}.value-label{font-weight:700}.site-footer{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:7px;text-align:center;padding:28px 16px;color:var(--ink-soft);font-size:13px}.site-footer-feedback{font-weight:700;color:#5a4192;text-decoration:underline;text-underline-offset:3px}.site-footer-feedback:hover{color:var(--orange)}.site-footer-create{font-weight:800;color:#5a4192}.site-footer-create:hover{color:var(--orange)}.site-footer-create:hover,.site-footer-legal{text-decoration:underline;text-underline-offset:3px}.site-footer-legal{color:#626783}.site-footer-legal:hover{color:var(--orange)}.feedback-float{position:fixed;z-index:90;inset-inline-end:10px;top:50%;display:flex;flex-direction:column;overflow:hidden;color:#fff;background:rgba(40,30,78,.96);border:1px solid hsla(0,0%,100%,.16);border-radius:18px;box-shadow:0 12px 30px rgba(29,16,60,.3);transform:translateY(-50%);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.feedback-float-link{display:flex;flex-direction:column;align-items:center;gap:6px;width:48px;min-height:108px;padding:10px 7px;color:hsla(0,0%,100%,.9);border-bottom:1px solid hsla(0,0%,100%,.13);font-size:12px;font-weight:800;line-height:1;transition:color .12s ease,background .12s ease}.feedback-float-link:last-child{border-bottom:0}.feedback-float-link:focus-visible,.feedback-float-link:hover{color:#fff;background:var(--orange);outline:0}.feedback-float-icon{font-size:16px;line-height:1}.feedback-float-label{writing-mode:vertical-rl;-webkit-text-orientation:mixed;text-orientation:mixed;white-space:nowrap}[dir=rtl] .feedback-float-label{writing-mode:vertical-lr}.feedback-page{min-height:calc(100vh - var(--header-h));padding:46px 16px 64px}.feedback-shell{width:min(920px,100%);margin:0 auto}.feedback-intro{max-width:760px;margin:0 auto 26px;text-align:center}.feedback-eyebrow{display:inline-block;margin-bottom:10px;padding:6px 13px;border-radius:999px;color:#5a4192;background:hsla(0,0%,100%,.72);border:1px solid #d8cdf1;font-size:13px;font-weight:800;letter-spacing:.02em}.feedback-intro h1{max-width:780px;margin:0 auto;color:#2c2252;font-size:clamp(30px,5.5vw,48px);line-height:1.12;letter-spacing:-.025em}.feedback-intro p{max-width:680px;margin:16px auto 0;color:var(--ink-soft);font-size:clamp(16px,2vw,18px);line-height:1.65}.feedback-card{position:relative;padding:clamp(22px,5vw,42px);overflow:hidden;background:hsla(0,0%,100%,.94);border:1px solid rgba(217,222,240,.95);border-radius:24px;box-shadow:0 18px 50px rgba(45,32,92,.16)}.feedback-card:before{content:"";position:absolute;inset:0 0 auto;height:5px;background:linear-gradient(90deg,var(--purple-2),var(--purple),var(--orange))}.feedback-form{display:grid;grid-gap:26px;gap:26px}.feedback-categories{min-width:0;margin:0;padding:0;border:0}.feedback-categories legend,.feedback-field>span{display:block;margin-bottom:10px;color:#35285f;font-size:14px;font-weight:800}.feedback-choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px}.feedback-choice{position:relative;min-width:0;cursor:pointer}.feedback-choice:last-child:nth-child(odd){grid-column:1/-1}.feedback-choice-input{position:absolute;opacity:0;pointer-events:none}.feedback-choice-label{display:flex;align-items:center;gap:9px;height:100%;padding:13px 15px;color:var(--ink-soft);background:#f8f7fd;border:1px solid #dde1f1;border-radius:13px;font-size:14px;font-weight:650;line-height:1.35;transition:border-color .12s ease,background .12s ease,box-shadow .12s ease}.feedback-choice:hover .feedback-choice-label{border-color:#baa9e1;background:#f4f0fc}.feedback-choice-input:checked+.feedback-choice-label{color:#4d337c;background:#f1eafd;border-color:var(--purple);box-shadow:0 0 0 2px rgba(118,75,162,.1)}.feedback-choice-input:focus-visible+.feedback-choice-label{outline:3px solid rgba(102,126,234,.3);outline-offset:2px}.feedback-field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.feedback-field{display:block;min-width:0}.feedback-field input,.feedback-field textarea{display:block;width:100%;padding:13px 14px;color:var(--ink);background:#fff;border:1px solid #cfd5e9;border-radius:12px;outline:none;font:inherit;transition:border-color .12s ease,box-shadow .12s ease}.feedback-field textarea{min-height:150px;resize:vertical;line-height:1.55}.feedback-field input::placeholder,.feedback-field textarea::placeholder{color:#8589a5}.feedback-field input:focus,.feedback-field textarea:focus{border-color:var(--purple-2);box-shadow:0 0 0 3px rgba(102,126,234,.15)}.feedback-submit-row{display:flex;align-items:center;justify-content:space-between;gap:22px}.feedback-submit-row p{flex:1 1 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0;color:var(--ink-soft);line-height:1.6}.feedback-status-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:28px}@media (max-width:640px){.feedback-page{padding:32px 12px 48px}.feedback-choice-grid,.feedback-field-grid{grid-template-columns:1fr}.feedback-choice:last-child:nth-child(odd){grid-column:auto}.feedback-submit-row{align-items:stretch;flex-direction:column}.feedback-submit-row .btn{width:100%}.site-footer-separator{display:none}.site-footer{flex-direction:column;margin-bottom:70px}.feedback-float{inset:auto 10px 10px;top:auto;flex-direction:row;padding:5px;border-radius:17px;transform:none}.feedback-float-link{flex:1 1;flex-direction:row;justify-content:center;gap:5px;width:auto;min-height:0;padding:9px 10px;border:0;-webkit-border-end:1px solid hsla(0,0%,100%,.13);border-inline-end:1px solid hsla(0,0%,100%,.13);border-radius:12px;line-height:1.15;text-align:center}.feedback-float-link:last-child{-webkit-border-end:0;border-inline-end:0}.feedback-float-label,[dir=rtl] .feedback-float-label{writing-mode:horizontal-tb;white-space:normal}}