.ebook-page{--reader-paper:#fff;--reader-ink:#233d62;--reader-title:#0d3678;--reader-part:#2d65af;--reader-meta:#8a99ad;--reader-canvas:#e7edf5;--reader-tint:#fff;--reader-tint-opacity:0;background:#edf2f8;color:#102d59}
.ebook-page[data-reading-theme="warm"]{--reader-paper:#fbf4e8;--reader-ink:#473f33;--reader-title:#584126;--reader-part:#936b2c;--reader-meta:#8b7d69;--reader-canvas:#e9e2d5;--reader-tint:#f7ebd3;--reader-tint-opacity:.8}
.ebook-page[data-reading-theme="green"]{--reader-paper:#f0f6ed;--reader-ink:#31493d;--reader-title:#255346;--reader-part:#47745e;--reader-meta:#738b7c;--reader-canvas:#e2eae0;--reader-tint:#e4f1e1;--reader-tint-opacity:.75}
.ebook-page .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.ebook-page button:focus-visible,.ebook-page a:focus-visible,.ebook-page input:focus-visible{outline:3px solid #ff9a2c;outline-offset:3px}

.ebook-heading{background:#fff;border-bottom:1px solid #dfe7f2;color:#102d59}
.ebook-heading-inner{width:min(1540px,calc(100% - 56px));margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 0 19px}
.ebook-overline{display:flex;align-items:center;gap:10px;color:#4772ae;font-size:10px;font-weight:800;letter-spacing:.17em}
.ebook-overline span{display:block;width:26px;height:2px;background:#ff921d}
.ebook-heading h1{margin:6px 0 3px;color:#0c3473;font-size:clamp(28px,2.4vw,35px);line-height:1.17;letter-spacing:-.035em}
.ebook-heading p{margin:0;color:#627b9e;font-size:13px}
.ebook-heading-actions{display:flex;align-items:center;color:#6d83a0;font-size:13px;font-weight:650;white-space:nowrap}

.ebook-reading{padding:14px 0 28px}
.ebook-layout{width:min(1540px,calc(100% - 56px));margin:auto;display:grid;grid-template-columns:326px minmax(0,1fr);gap:16px;align-items:start}
.ebook-toc{position:sticky;top:134px;max-height:calc(100dvh - 152px);overflow:auto;padding:20px 0 14px;background:#fff;border:1px solid #dce6f4;border-radius:8px;scrollbar-width:thin;scrollbar-color:#b8cceb transparent}
.ebook-toc-head{display:flex;align-items:start;justify-content:space-between;padding:0 20px 18px}
.ebook-toc-head small{color:#5176aa;font-size:10px;font-weight:850;letter-spacing:.19em}
.ebook-toc-head h2{margin:6px 0 4px;color:#0b3476;font-size:27px;line-height:1.18}
.ebook-toc-head p{margin:0;color:#879ab4;font-size:12px;letter-spacing:.04em}
.ebook-toc-close{display:none;border:0;background:transparent;color:#143f83;font-size:28px;line-height:1}
.ebook-toc-search{display:block;position:relative;margin:0 16px 16px}
.ebook-toc-search input{display:block;width:100%;height:43px;padding:0 35px 0 14px;border:1px solid #d8e5f6;border-radius:7px;background:#f8fbff;color:#0c3679;font-size:14px;outline:0;transition:border-color .18s,box-shadow .18s}
.ebook-toc-search input:focus{border-color:#88b3e5;box-shadow:0 0 0 3px rgba(58,130,213,.12)}
.ebook-toc-search input::placeholder{color:#8499b9}
.ebook-toc-search>span:last-child{position:absolute;right:12px;top:4px;color:#5f83b8;font-size:24px}
.ebook-toc-list{display:block}
.ebook-toc-loading{padding:0 20px;color:#6881a2;font-size:13px}
.ebook-toc-group{border-top:1px solid #e6edf7}
.ebook-toc-group-title{display:flex;align-items:center;justify-content:space-between;width:100%;padding:17px 20px 9px;border:0;background:transparent;color:#174d96;font-size:14px;font-weight:850;line-height:1.4;text-align:left;letter-spacing:.01em}
.ebook-toc-group-title::after{content:'↗';color:#9fb5d2;font-size:13px;font-weight:500}
.ebook-toc-group-title:hover{color:#ed7c12}
.ebook-toc-link{display:grid;grid-template-columns:28px minmax(0,1fr) 29px;gap:8px;align-items:start;width:100%;min-height:43px;padding:10px 18px 10px 20px;color:#3a567a;font-size:14.5px;line-height:1.45;transition:color .15s,background .15s}
.ebook-toc-link:hover{color:#104db0;background:#f4f8ff}
.ebook-toc-link[aria-current="page"]{background:#eaf3ff;color:#0b418c;font-weight:800;box-shadow:inset 3px 0 #ff8b1f}
.ebook-toc-link .toc-number{color:#ed861f;font-size:12px;font-weight:850;line-height:1.7}
.ebook-toc-link .toc-page{color:#829ab9;font-size:12px;line-height:1.8;text-align:right}
.ebook-toc-link[aria-current="page"] .toc-page{color:#225b9e;font-weight:850}
.ebook-toc-group.is-hidden,.ebook-toc-link.is-hidden{display:none}
.ebook-toc-empty{padding:8px 20px;color:#657e9e;font-size:13px}
.ebook-toc-backdrop{display:none}

.ebook-workspace{min-width:0;overflow:hidden;border:1px solid #dce6f3;border-radius:8px;background:#f7f9fc}
.ebook-toolbar{position:relative;z-index:15;display:flex;align-items:center;gap:12px;min-height:62px;padding:8px 16px;border-bottom:1px solid #dce6f3;background:#fff}
.ebook-location{display:grid;gap:2px;min-width:0;margin-right:auto}
.ebook-location small{color:#8499b5;font-size:11px;font-weight:750}
.ebook-location strong{max-width:400px;overflow:hidden;color:#103978;font-size:15px;text-overflow:ellipsis;white-space:nowrap}
.ebook-page-controls,.ebook-zoom-controls{display:flex;align-items:center;gap:7px;flex:none}
.ebook-font-controls{display:none;align-items:center;gap:7px;flex:none}
.ebook-page.is-text-mode .ebook-font-controls{display:flex}
.ebook-page.is-text-mode .ebook-zoom-controls{display:none}
.ebook-page-controls label{display:flex;align-items:center;gap:5px;color:#8196b1;font-size:13px;white-space:nowrap}
.ebook-page-controls input{width:49px;height:40px;border:1px solid #dbe6f5;border-radius:6px;background:#fff;color:#0c3678;font-size:15px;font-weight:750;text-align:center;appearance:textfield}
.ebook-page-controls input::-webkit-outer-spin-button,.ebook-page-controls input::-webkit-inner-spin-button{appearance:none;margin:0}
.ebook-tool{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 8px;border:1px solid #dbe6f5;border-radius:6px;background:#fff;color:#164d9c;font-size:18px;line-height:1;transition:border-color .15s,background .15s,transform .15s}
.ebook-tool:hover:not(:disabled){border-color:#99bce8;background:#edf5ff}
.ebook-tool:disabled{opacity:.42;cursor:not-allowed}
.ebook-view-toggle{font-size:13px;font-weight:800;white-space:nowrap}
.ebook-view-toggle[aria-pressed="true"]{border-color:#9bbbe7;background:#edf5ff}
.ebook-immersive-open,.ebook-immersive-header,.ebook-immersive-footer{display:none}
.ebook-zoom-controls output,.ebook-font-controls output{min-width:42px;color:#46658e;font-size:12px;font-weight:750;text-align:center}
.ebook-font-tool{font-size:15px;font-weight:800;letter-spacing:-.04em}
.ebook-mobile-toc{display:none}
.ebook-progress{height:3px;background:#e3ecf8}
.ebook-progress span{display:block;width:0;height:100%;background:#ff8b1e;transition:width .2s}
.ebook-theme-bar{display:flex;align-items:center;gap:9px;min-height:45px;padding:5px 16px;border-bottom:1px solid #e4ebf4;background:#fbfcff}
.ebook-theme-bar>span{margin-right:4px;color:#6c83a2;font-size:12px;font-weight:750;white-space:nowrap}
.ebook-theme-option{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:30px;padding:0 10px;border:1px solid transparent;border-radius:6px;background:transparent;color:#49668c;font-size:12px;font-weight:700;white-space:nowrap;transition:background .16s,border-color .16s,color .16s}
.ebook-theme-option i{display:block;width:13px;height:13px;border:1px solid #d2dce8;border-radius:50%;background:#fff}
.ebook-theme-option[data-theme="warm"] i{background:#f6e7c8;border-color:#e4d4b3}
.ebook-theme-option[data-theme="green"] i{background:#e5f0df;border-color:#cddfc7}
.ebook-theme-option:hover{background:#f1f6fd}
.ebook-theme-option[aria-pressed="true"]{border-color:#bed4ee;background:#edf5ff;color:#164c96}
.ebook-page-scroll{min-height:560px;max-height:calc(100dvh - 347px);overflow:auto;display:flex;align-items:flex-start;justify-content:center;padding:18px;background:var(--reader-canvas);scrollbar-width:thin}
.ebook-page-stage{position:relative;flex:none;width:min(100%,680px);min-height:300px;background:var(--reader-paper);box-shadow:0 10px 32px rgba(13,44,91,.13)}
.ebook-page-stage:not(.is-text)::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:var(--reader-tint);opacity:var(--reader-tint-opacity);mix-blend-mode:multiply}
.ebook-page-stage #reader-image{display:none;margin:0 auto;background:white;height:auto;max-width:none}
.ebook-text-page{display:none;width:min(100%,900px);margin:0 auto;padding:42px clamp(28px,5vw,76px) 72px;color:var(--reader-ink);font-size:19px;line-height:1.8;overflow-wrap:anywhere}
.ebook-text-page p{margin:0 0 1.15em}
.ebook-text-page .ebook-text-part{color:var(--reader-part);font-size:.78em;font-weight:800;letter-spacing:.06em}
.ebook-text-page .ebook-text-title{margin:0 0 1em;color:var(--reader-title);font-size:1.35em;font-weight:850;line-height:1.42;letter-spacing:-.02em}
.ebook-text-page .ebook-text-meta{color:var(--reader-meta);font-size:.7em;line-height:1.55}
.ebook-text-page .ebook-text-list{padding-left:1.45em;text-indent:-1.45em}
.ebook-opening{display:flex;flex-direction:column;justify-content:center;min-height:440px;padding:3em 0}
.ebook-text-page .ebook-opening-eyebrow{margin:0 0 2.1em;color:var(--reader-meta);font-size:.66em;font-weight:750;letter-spacing:.1em}
.ebook-text-page .ebook-opening-part{margin:0 0 .7em;color:var(--reader-part);font-size:.84em;font-weight:800}
.ebook-opening h2{max-width:16em;margin:0;color:var(--reader-title);font-size:1.7em;line-height:1.42;letter-spacing:-.025em}
.ebook-text-page .ebook-opening-caption{margin:.8em 0 0;color:var(--reader-part);font-size:.86em;line-height:1.55}
.ebook-text-page .ebook-opening-subtitle{margin:1.4em 0 0;color:var(--reader-meta);font-size:.75em}
.ebook-text-page .ebook-opening-author{margin:1.1em 0 0;color:var(--reader-meta);font-size:.72em}
.ebook-directory-title{margin:0 0 .12em;color:var(--reader-title);font-size:1.5em;line-height:1.3}
.ebook-text-page .ebook-directory-hint{margin:0 0 1.5em;color:var(--reader-meta);font-size:.72em}
.ebook-directory-group{margin:0 0 1.7em}
.ebook-directory-group h3{margin:0 0 .42em;padding:0 0 .42em;border-bottom:1px solid #dbe5f0;color:var(--reader-part);font-size:1.04em;font-weight:800;line-height:1.45}
.ebook-directory-link{display:grid;grid-template-columns:2em minmax(0,1fr) 2em;align-items:baseline;gap:.35em;min-height:2.45em;padding:.48em 0;border-bottom:1px solid rgba(99,130,164,.12);color:var(--reader-ink);font-size:.9em;line-height:1.55;text-decoration:none}
.ebook-directory-link:hover{color:var(--reader-title)}
.ebook-directory-number,.ebook-directory-page{color:var(--reader-meta);font-size:.72em;font-weight:700}
.ebook-directory-page{text-align:right}
.ebook-page-stage.is-text{width:100%!important;min-height:0!important}
.ebook-page-stage.is-text .ebook-text-page{display:block}
.ebook-page-stage.is-text #reader-image{display:none!important}
.ebook-cover-placeholder{width:100%;height:auto;margin:auto}
.ebook-status{min-height:20px;margin:0;padding:6px 20px;color:#6881a1;font-size:12px;text-align:center}
.ebook-status.is-error{color:#bd4a21}
.ebook-chapter-controls{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 18px 16px;border-top:1px solid #e1eaf6;background:#fff}
.ebook-chapter-controls button{min-height:38px;padding:0 10px;border:0;background:transparent;color:#1455a7;font-size:14px;font-weight:750}
.ebook-chapter-controls button:hover:not(:disabled){color:#e97b10}
.ebook-chapter-controls button:disabled{color:#9baec6;cursor:not-allowed}
.ebook-chapter-controls span{color:#7187a5;font-size:13px;white-space:nowrap}
.ebook-footer{background:#0b3476;color:#b9cfee}
.ebook-footer>div{width:min(1480px,calc(100% - 64px));margin:auto;display:flex;align-items:center;gap:24px;padding:19px 0;font-size:11px}
.ebook-footer span{margin-right:auto}
.ebook-footer a:hover{color:#fff}
.ebook-page .floating-chat,.ebook-page .chat-panel{display:none!important}

@media(max-width:1100px){
  .ebook-layout{grid-template-columns:292px minmax(0,1fr);gap:14px}
  .ebook-location strong{max-width:240px}
  .ebook-toolbar{gap:10px}
  .ebook-page-scroll{padding:16px}
}
@media(max-width:860px){
  .ebook-heading-inner,.ebook-layout,.ebook-footer>div{width:calc(100% - 36px)}
  .ebook-heading-inner{padding:17px 0;align-items:start}
  .ebook-heading-actions{align-items:end;flex-direction:column;gap:8px}
  .ebook-reading{padding:14px 0 24px}
  .ebook-layout{display:block}
  .ebook-toc{position:fixed;top:0;left:0;z-index:101;width:min(86vw,350px);height:100dvh;max-height:none;border:0;border-radius:0;box-shadow:20px 0 45px rgba(6,35,82,.16);transform:translateX(-105%);transition:transform .22s ease}
  .ebook-page.toc-open .ebook-toc{transform:none}
  .ebook-toc-close{display:block}
  .ebook-toc-backdrop{position:fixed;inset:0;z-index:100;border:0;background:rgba(5,27,63,.45)}
  .ebook-page.toc-open .ebook-toc-backdrop{display:block}
  .ebook-mobile-toc{display:inline-flex;gap:5px;padding:0 10px;font-size:13px;font-weight:750;white-space:nowrap}
  .ebook-toolbar{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:8px}
  .ebook-location{grid-column:2}
  .ebook-view-toggle{grid-column:3}
  .ebook-page-controls{grid-column:1/3;grid-row:2}
  .ebook-zoom-controls,.ebook-font-controls{grid-column:3;grid-row:2}
  .ebook-page-scroll{max-height:none;min-height:400px}
}
@media(max-width:560px){
  .ebook-heading-inner{display:block;padding:14px 0 14px}
  .ebook-heading h1{margin:5px 0 2px;font-size:27px}
  .ebook-heading p{font-size:12px}
  .ebook-heading-actions{flex-direction:row;align-items:center;margin-top:8px;padding:0;font-size:11px}
  .ebook-layout{width:100%}
  .ebook-reading{padding:0 0 22px}
  .ebook-workspace{border-radius:0;border-left:0;border-right:0}
  .ebook-toolbar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:7px;padding:8px 12px}
  .ebook-location{grid-column:2}
  .ebook-view-toggle{grid-column:3;padding:0 9px;font-size:12px}
  .ebook-immersive-open{display:inline-flex;grid-column:1/-1;grid-row:3;justify-self:stretch;gap:6px;height:42px;border-color:#0d4ba3;background:#0d4ba3;color:#fff;font-size:14px;font-weight:800}
  .ebook-immersive-open:hover:not(:disabled){background:#083d89;color:#fff}
  .ebook-location small{display:none}
  .ebook-location strong{max-width:none;font-size:13px}
  .ebook-page-controls{grid-column:1/3;grid-row:2}
  .ebook-zoom-controls{display:none}
  .ebook-page .ebook-font-controls{display:none}
  .ebook-page-scroll{padding:12px 10px;min-height:390px}
  .ebook-theme-bar{gap:4px;padding:5px 10px}
  .ebook-theme-bar>span{font-size:11px;margin-right:2px}
  .ebook-theme-option{padding:0 7px;font-size:11px}
  .ebook-text-page{padding:27px 22px 42px;font-size:18px;line-height:1.74}
  .ebook-chapter-controls{padding:9px 10px 12px}
  .ebook-chapter-controls button{font-size:12px}
  .ebook-chapter-controls span{font-size:11px}
  .ebook-footer>div{flex-wrap:wrap;gap:10px 20px}
  .ebook-footer span{width:100%}
}
@media(max-width:360px){
  .ebook-overline{font-size:9px;letter-spacing:.09em}
  .ebook-page-controls{grid-column:1/-1;grid-row:2}
  .ebook-theme-bar{overflow-x:auto;scrollbar-width:none}
  .ebook-theme-bar::-webkit-scrollbar{display:none}
}
@media(prefers-reduced-motion:reduce){.ebook-toc,.ebook-progress span,.ebook-tool,.ebook-toc-search input{transition:none}}

@media(max-width:560px){
  .ebook-page.ebook-immersive{overflow:hidden}
  .ebook-immersive .ebook-reading{position:fixed;inset:0;z-index:1000;height:100dvh;padding:0;background:var(--reader-paper)}
  .ebook-immersive .ebook-layout{width:100%;height:100%;margin:0}
  .ebook-immersive .ebook-workspace{display:flex;flex-direction:column;width:100%;height:100%;overflow:hidden;border:0;border-radius:0;background:var(--reader-paper)}
  .ebook-immersive .ebook-toolbar,.ebook-immersive .ebook-progress,.ebook-immersive .ebook-theme-bar,.ebook-immersive .ebook-status,.ebook-immersive .ebook-chapter-controls{display:none}
  .ebook-immersive .ebook-immersive-header{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;flex:none;min-height:calc(56px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 16px 0;border-bottom:1px solid rgba(94,122,154,.16);background:var(--reader-paper)}
  .ebook-immersive-header button{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:0 3px;border:0;background:transparent;color:var(--reader-title);font-size:14px;font-weight:750}
  .ebook-immersive-header strong{min-width:0;overflow:hidden;color:var(--reader-title);font-size:15px;font-weight:800;text-align:center;text-overflow:ellipsis;white-space:nowrap}
  .ebook-immersive .ebook-page-scroll{display:block;flex:1;min-height:0;max-height:none;width:100%;overflow-y:auto;overflow-x:hidden;padding:0;background:var(--reader-paper);overscroll-behavior:contain;touch-action:pan-y}
  .ebook-immersive .ebook-page-stage{width:100%!important;min-height:100%!important;background:var(--reader-paper);box-shadow:none}
  .ebook-immersive .ebook-text-page{width:100%;max-width:none;margin:0;padding:24px 21px 54px;color:var(--reader-ink);line-height:1.78;overflow-wrap:anywhere;word-break:break-word}
  .ebook-immersive .ebook-text-page p{margin-bottom:1.06em}
  .ebook-immersive .ebook-opening{min-height:calc(100dvh - 190px)}
  .ebook-immersive .ebook-immersive-footer{display:grid;grid-template-columns:34px 52px 34px minmax(1px,1fr) 34px 38px 34px 44px;align-items:center;gap:4px;flex:none;min-height:calc(58px + env(safe-area-inset-bottom));padding:5px 11px calc(5px + env(safe-area-inset-bottom));border-top:1px solid rgba(94,122,154,.18);background:var(--reader-paper)}
  .ebook-immersive-footer button{display:inline-flex;align-items:center;justify-content:center;min-width:0;height:42px;padding:0;border:0;border-radius:7px;background:transparent;color:var(--reader-title);font-size:20px;font-weight:700}
  .ebook-immersive-footer button:disabled{opacity:.35}
  .ebook-immersive-footer span,.ebook-immersive-footer output{color:var(--reader-meta);font-size:11px;font-weight:750;text-align:center;white-space:nowrap}
  .ebook-immersive-footer .ebook-immersive-divider{width:1px;height:22px;justify-self:center;background:#d7e0eb}
  .ebook-immersive-footer #immersive-font-decrease,.ebook-immersive-footer #immersive-font-increase{font-size:15px}
  .ebook-immersive-footer #immersive-theme{border:1px solid #cbd9e9;border-radius:6px;font-size:11px}
}

.ebook-application[hidden],.ebook-reading[hidden]{display:none}
.ebook-application{padding:40px 28px 60px;background:radial-gradient(circle at 18% 10%,#e7f1ff 0,transparent 42%),#edf2f8}
.ebook-application-inner{width:min(1080px,100%);margin:auto;display:grid;grid-template-columns:minmax(250px,.72fr) minmax(0,1fr);align-items:center;gap:clamp(35px,7vw,100px)}
.ebook-application-cover{display:flex;justify-content:center}
.ebook-application-cover img{display:block;width:min(100%,370px);height:auto;filter:drop-shadow(0 24px 22px rgba(20,53,101,.16))}
.ebook-application-card{padding:35px clamp(24px,4vw,48px) 31px;border:1px solid #dce8f8;border-radius:16px;background:#fff;box-shadow:0 18px 44px rgba(18,53,102,.08)}
.ebook-application-card h2{margin:15px 0 9px;color:#0b3476;font-size:clamp(27px,3vw,38px);line-height:1.2}
.ebook-application-card>p{margin:0 0 25px;color:#587397;font-size:15px;line-height:1.75}
.ebook-application-card form{display:grid;gap:9px}
.ebook-application-card form>label:not(.ebook-application-consent){color:#193f78;font-size:14px;font-weight:800}
.ebook-application-card form>input:not(.ebook-application-honeypot){width:100%;height:47px;margin-bottom:8px;padding:0 14px;border:1px solid #cdddf2;border-radius:8px;background:#fbfdff;color:#143866;font:inherit;font-size:15px}
.ebook-application-card form>input:focus{outline:2px solid #9dbfea;outline-offset:1px}
.ebook-application-honeypot{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;opacity:0!important}
.ebook-application-consent{display:flex;align-items:flex-start;gap:9px;margin:3px 0 8px;color:#617998;font-size:12px;line-height:1.6}
.ebook-application-consent input{flex:none;margin:3px 0 0;accent-color:#0d55ad}
.ebook-application-consent a{color:#0d55ad;text-underline-offset:2px}
.ebook-application-card button[type="submit"]{display:flex;align-items:center;justify-content:center;gap:16px;width:100%;min-height:48px;border:0;border-radius:8px;background:#0d4ba3;color:#fff;font-size:15px;font-weight:800;cursor:pointer}
.ebook-application-card button[type="submit"]:hover:not(:disabled){background:#073d88}
.ebook-application-card button[type="submit"]:disabled{opacity:.6;cursor:wait}
.ebook-application-status{min-height:19px;margin:2px 0 0;color:#2d6b9c;font-size:12px}
.ebook-application-status.is-error{color:#b64a25}
@media(max-width:760px){.ebook-application{padding:24px 16px 38px}.ebook-application-inner{grid-template-columns:1fr;gap:12px}.ebook-application-cover img{width:min(100%,200px)}.ebook-application-card{padding:25px 22px 22px}.ebook-application-card>p{margin-bottom:17px}}