:root{--paper:#fffaf0;--paper2:#fff4de;--ink:#1c2333;--muted:#5b657a;--line:#e8dcc7;--accent:#b35a1f;--accent2:#1e6b7a;--soft:#f8ecd9;--nav:#182032;--nav2:#121929;--code:#111827;--codeLine:#263244;--radius:18px;--shadow:0 18px 40px rgba(40,30,20,.10);--font:ui-serif,Georgia,'Times New Roman',serif;--sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--mono:'JetBrains Mono','SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(90deg,#0f1727 0,#0f1727 310px,var(--paper) 310px,var(--paper) 100%);color:var(--ink);font:18px/1.72 var(--font)}a{color:#0b6170;text-decoration-thickness:.08em;text-underline-offset:.18em}.book-shell{display:grid;grid-template-columns:310px minmax(0,1fr);min-height:100vh}.book-nav{position:sticky;top:0;align-self:start;height:100vh;overflow:auto;background:linear-gradient(180deg,var(--nav),var(--nav2));color:#dce7f7;padding:26px 20px;border-right:1px solid #344052}.book-nav h1{font:800 20px/1.15 var(--sans);margin:0 0 8px;color:#fff}.book-nav .sub{font:13px/1.5 var(--sans);color:#b8c8df;margin-bottom:18px}.book-nav a{display:block;color:#dce7f7;text-decoration:none;border-radius:10px;padding:6px 8px;font:14px/1.35 var(--sans)}.book-nav a:hover{background:rgba(255,255,255,.08)}.book-nav details{border-top:1px solid rgba(255,255,255,.11);padding:8px 0}.book-nav summary{cursor:pointer;font:700 13px/1.4 var(--sans);color:#fff;list-style:none;padding:6px 2px}.book-nav summary::-webkit-details-marker{display:none}.book-main{padding:0 40px 80px}.book-page{max-width:980px;margin:0 auto;background:var(--paper);}.hero-book{padding:70px 0 34px;border-bottom:1px solid var(--line);position:relative}.eyebrow{font:800 13px/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--accent2);margin-bottom:16px}.hero-book h1{font:900 clamp(38px,6vw,72px)/.95 var(--sans);letter-spacing:-.055em;margin:0 0 24px;color:#182033;max-width:850px}.hero-book .lead{font:22px/1.58 var(--font);color:#394356;max-width:760px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:10px 15px;background:#182033;color:#fff!important;text-decoration:none;font:700 14px/1 var(--sans);box-shadow:var(--shadow)}.btn.secondary{background:#fff;border:1px solid var(--line);color:#182033!important}.book-meta{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:36px 0}.meta-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.meta-card b{display:block;font:900 24px/1 var(--sans);color:var(--accent)}.meta-card span{font:13px/1.45 var(--sans);color:var(--muted)}.reading-intro,.part-intro,.chapter{background:#fff;border:1px solid var(--line);border-radius:22px;margin:28px 0;padding:32px;box-shadow:var(--shadow)}.reading-intro h2,.part-intro h2{font:850 34px/1.1 var(--sans);letter-spacing:-.03em;margin:0 0 14px}.part-intro{background:linear-gradient(135deg,#fff,#fff2dc);border-color:#dfccb0}.part-label{font:900 12px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}.chapter{padding:0;overflow:hidden}.chapter-head{padding:34px 38px 26px;background:linear-gradient(180deg,#fff,#fff7e9);border-bottom:1px solid var(--line)}.chapter-kicker{font:900 12px/1 var(--sans);letter-spacing:.15em;text-transform:uppercase;color:var(--accent2);margin-bottom:8px}.chapter h2.chapter-title{font:900 clamp(28px,4vw,44px)/1.04 var(--sans);letter-spacing:-.04em;margin:0;color:#1b2434}.chapter .summary{font-size:20px;color:#445067;margin:14px 0 0;max-width:760px}.chapter-body{padding:26px 38px 38px}.chapter-body h1{display:none}.chapter-body h2{font:850 27px/1.2 var(--sans);letter-spacing:-.025em;margin:36px 0 12px;color:#1f2937}.chapter-body h3{font:800 22px/1.25 var(--sans);margin:28px 0 10px;color:#263143}.chapter-body p{margin:0 0 18px}.chapter-body .lead{font-size:21px;color:#3f495d}.chapter-body ul,.chapter-body ol{padding-left:1.35em}.chapter-body li{margin:.35em 0}.note,.warning,.tip,.decision,.interview{border-radius:16px;padding:18px 20px;margin:22px 0;border:1px solid var(--line);background:#fff9ee}.chapter-body blockquote{margin:24px 0;padding:18px 24px;border-left:5px solid var(--accent);background:#fff6e8;border-radius:0 14px 14px 0;color:#344054}.book-figure{margin:28px auto;padding:18px;border:1px solid var(--line);border-radius:20px;background:#fffdf8;text-align:center}.book-figure img,.chapter-body img{max-width:100%;height:auto;border-radius:14px}.book-figure figcaption{font:13px/1.45 var(--sans);color:var(--muted);margin-top:10px}.hero-figure{margin-top:18px}.table-scroll{overflow:auto;margin:22px 0;border:1px solid var(--line);border-radius:16px;background:#fff}.table-scroll table,table{border-collapse:collapse;width:100%;font:15px/1.45 var(--sans)}th,td{border-bottom:1px solid #ecdfcc;padding:10px 12px;text-align:left;vertical-align:top}th{background:#fff3dd;color:#1d2838;font-weight:850}.code-title{background:#1f2937;color:#dbeafe;border-radius:14px 14px 0 0;padding:9px 14px;font:800 12px/1 var(--sans);margin:24px 0 0;display:flex;justify-content:space-between}.code-title:after{content:'JetBrains Dark';color:#93c5fd;font-weight:700}.chapter-body pre,.codeblock{margin:0 0 24px!important;padding:18px!important;border-radius:0 0 14px 14px!important;background:var(--code)!important;color:#e5e7eb!important;overflow-x:auto;border:1px solid #334155;border-top:none;font:14px/1.65 var(--mono)!important;white-space:pre}.chapter-body code{font-family:var(--mono);background:#fff3dc;border:1px solid #edd9bd;border-radius:6px;padding:.08em .35em}.chapter-body pre code{background:transparent;border:none;padding:0;color:inherit}.callout-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:28px 0}.callout{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.callout b{font-family:var(--sans);color:var(--accent2)}.toplink{display:inline-flex;margin-top:22px;font:700 13px/1 var(--sans);color:#8a471e;text-decoration:none}.mobile-only{display:none}.desktop-only{display:block}.book-footer{border-top:1px solid var(--line);padding:30px 0;color:var(--muted);font:14px/1.5 var(--sans)}mark.search-hit{background:#ffe066;color:#171717;border-radius:4px;padding:0 .12em}.searchbar{margin:14px 0 18px}.searchbar input{width:100%;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;border-radius:12px;padding:10px 12px}.searchbar input::placeholder{color:#aab7cc}.search-buttons{display:flex;gap:6px}.search-buttons button{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;border-radius:10px;padding:7px 10px}.source-note{font:13px/1.5 var(--sans);color:#64748b;background:#fff8ea;border:1px solid var(--line);padding:12px 14px;border-radius:12px;margin-top:18px}@media(max-width:900px){body{background:var(--paper);font-size:17px}.book-shell{display:block}.book-nav{position:relative;height:auto;border-right:none;padding:18px}.book-nav details:not(:first-of-type){display:none}.book-main{padding:0 18px 60px}.hero-book{padding:38px 0 24px}.book-meta{grid-template-columns:repeat(2,minmax(0,1fr))}.chapter-head,.chapter-body,.reading-intro,.part-intro{padding:24px 20px}.callout-grid{grid-template-columns:1fr}.desktop-only{display:none}.mobile-only{display:block}.chapter{border-radius:18px}.book-page{max-width:100%}}@media print{body{background:#fff;color:#111;font-size:12pt}.book-shell{display:block}.book-nav,.hero-actions,.toplink,.searchbar,.search-buttons{display:none!important}.book-main{padding:0}.book-page{max-width:none}.hero-book{page-break-after:always}.part-intro{page-break-before:always}.chapter{box-shadow:none;border:0;margin:0 0 24pt;page-break-inside:auto}.chapter-head{background:#fff;border-bottom:1pt solid #ddd;padding:12pt 0}.chapter-body{padding:10pt 0}.chapter h2.chapter-title{font-size:24pt}.chapter-body h2{font-size:16pt}.book-figure{break-inside:avoid}.chapter-body pre,.codeblock{font-size:8.5pt;white-space:pre-wrap}.table-scroll{overflow:visible}.btn{display:none}}

/* === FINAL PATCH: collapsible chapters + JetBrains code colors === */
.book-nav details{}.book-nav details:not([open]) > a{display:none}.book-nav summary::before{content:'▸';display:inline-block;width:1.2em;color:#7dd3fc}.book-nav details[open] > summary::before{content:'▾'}
.chapter-collapsible{padding:0;background:#fff;border:1px solid var(--line);border-radius:22px;margin:22px 0;box-shadow:var(--shadow);overflow:hidden}.chapter-collapsible>summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:start;padding:28px 34px;background:linear-gradient(180deg,#fff,#fff7e9);border-bottom:0}.chapter-collapsible>summary::-webkit-details-marker,.mobile-chapter>summary::-webkit-details-marker{display:none}.chapter-collapsible[open]>summary{border-bottom:1px solid var(--line)}.chapter-icon{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;background:#172033;color:#fff;font:900 18px/1 var(--sans);box-shadow:0 8px 22px rgba(15,23,42,.16);margin-top:2px}.chapter-icon::before{content:'▸'}.chapter-collapsible[open]>.chapter-toggle .chapter-icon::before,.mobile-chapter[open]>.chapter-toggle .chapter-icon::before{content:'▾'}.chapter-summary-text{display:block;min-width:0}.chapter-summary-text .chapter-kicker{display:block}.chapter-summary-text .chapter-title-as-text{display:block;font:900 clamp(25px,3.2vw,38px)/1.08 var(--sans);letter-spacing:-.035em;color:#1b2434;margin-top:5px}.chapter-summary-text .summary{display:block;font:19px/1.45 var(--font);color:#445067;margin-top:10px}.mobile-chapter>summary{list-style:none;display:grid!important;grid-template-columns:auto minmax(0,1fr);gap:13px;cursor:pointer}.mobile-chapter .chapter-icon{width:30px;height:30px;font-size:16px}.mobile-titlewrap{display:block;min-width:0}.chapter-title-mobile{display:block;font:900 23px/1.16 var(--sans);letter-spacing:-.02em;color:#1b2434}.summary-mobile{display:block;color:#526075;font:16px/1.45 var(--font);margin-top:7px}.chapter-nav{display:none!important}.chapter-tools{display:flex;gap:10px;align-items:center;margin:18px 0 4px}.chapter-tools .icon-btn{border:1px solid var(--line);background:#fff;color:#182033;border-radius:999px;width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;font:900 18px/1 var(--sans);box-shadow:var(--shadow);cursor:pointer}.chapter-tools .icon-btn:hover{background:#fff3dd}.codebox{position:relative;margin:26px 0}.codecap{display:flex;justify-content:space-between;align-items:center;background:#1f2937;color:#dbeafe;border:1px solid #334155;border-bottom:0;border-radius:14px 14px 0 0;padding:8px 12px;font:800 12px/1.2 var(--sans)}.codecap span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.copy{width:30px;height:26px;border-radius:8px;border:1px solid #475569;background:#111827;color:#e5e7eb;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.copy::before{content:'⧉';font-size:15px}.copy.ok::before{content:'✓';color:#a7f3d0}.code-title{border-radius:0!important;margin:0!important}.codebox .code-title+pre,.codebox pre{border-radius:0 0 14px 14px!important}.chapter-body pre,.codeblock{background:#0b1020!important;color:#a9b7c6!important;text-shadow:none!important}.chapter-body pre code,.codeblock code{color:#a9b7c6!important}.chapter-body pre .hll{background:#323232}.chapter-body pre .c,.chapter-body pre .c1,.chapter-body pre .cm,.chapter-body pre .cs,.chapter-body pre .ch,.chapter-body pre .cpf{color:#808080!important;font-style:italic}.chapter-body pre .err{color:#bc3f3c!important}.chapter-body pre .k,.chapter-body pre .kc,.chapter-body pre .kd,.chapter-body pre .kn,.chapter-body pre .kp,.chapter-body pre .kr,.chapter-body pre .kt,.chapter-body pre .ow{color:#cc7832!important;font-weight:700}.chapter-body pre .s,.chapter-body pre .s1,.chapter-body pre .s2,.chapter-body pre .sa,.chapter-body pre .sb,.chapter-body pre .sc,.chapter-body pre .dl,.chapter-body pre .sd,.chapter-body pre .se,.chapter-body pre .sh,.chapter-body pre .si,.chapter-body pre .sx,.chapter-body pre .sr,.chapter-body pre .ss{color:#6a8759!important}.chapter-body pre .m,.chapter-body pre .mb,.chapter-body pre .mf,.chapter-body pre .mh,.chapter-body pre .mi,.chapter-body pre .mo,.chapter-body pre .il{color:#6897bb!important}.chapter-body pre .na,.chapter-body pre .nv,.chapter-body pre .vc,.chapter-body pre .vg,.chapter-body pre .vi,.chapter-body pre .vm{color:#9876aa!important}.chapter-body pre .nb,.chapter-body pre .bp{color:#a9b7c6!important}.chapter-body pre .nc,.chapter-body pre .nn,.chapter-body pre .ne{color:#a9b7c6!important;font-weight:700}.chapter-body pre .nf,.chapter-body pre .fm{color:#ffc66d!important}.chapter-body pre .nd,.chapter-body pre .nl{color:#bbb529!important}.chapter-body pre .nt{color:#e8bf6a!important}.chapter-body pre .o,.chapter-body pre .p{color:#a9b7c6!important}.chapter-body pre .cp,.chapter-body pre .gh,.chapter-body pre .gu{color:#bbb529!important}.chapter-body pre .gd{color:#ff6b68!important}.chapter-body pre .gi{color:#a7f3d0!important}.chapter-body pre .w{color:#a9b7c6!important}.chapter-body pre .n{color:#a9b7c6!important}@media(max-width:900px){.chapter-collapsible>summary{padding:22px 18px}.chapter-summary-text .chapter-title-as-text{font-size:23px}.chapter-tools{position:sticky;top:0;z-index:5;background:rgba(255,250,240,.92);backdrop-filter:blur(10px);padding:8px 0}.chapter-tools .icon-btn{width:38px;height:38px}.chapter-body pre,.codeblock{font-size:13px!important;max-width:100%;overflow-x:auto}}@media print{.chapter-collapsible{display:block!important;box-shadow:none;border:0;page-break-inside:auto}.chapter-collapsible>summary{display:block!important;padding:12pt 0;border-bottom:1pt solid #ddd;background:#fff}.chapter-icon,.chapter-tools{display:none!important}.chapter-summary-text .chapter-title-as-text{font-size:24pt}.chapter-collapsible:not([open])>.chapter-body{display:block!important}.chapter-nav{display:none!important}}



/* === FINAL FIX: Lehrbuch-Kapitel wirklich klappbar und default geschlossen === */
details.chapter-collapsible:not([open]) > .chapter-body,
details.mobile-chapter:not([open]) > .chapter-body{display:none;}
details.chapter-collapsible > summary.chapter-toggle,
details.mobile-chapter > summary.chapter-toggle{user-select:none;}
details.chapter-collapsible > summary.chapter-toggle:hover,
details.mobile-chapter > summary.chapter-toggle:hover{filter:brightness(.985);}
details.chapter-collapsible > summary.chapter-toggle:focus-visible,
details.mobile-chapter > summary.chapter-toggle:focus-visible{outline:3px solid #79c2d0;outline-offset:3px;}
.book-nav details:not([open]) > a{display:none!important;}
.book-nav details > summary::before{content:'▸';display:inline-block;width:1.2em;color:#7dd3fc;}
.book-nav details[open] > summary::before{content:'▾';}
@media print{details.chapter-collapsible:not([open]) > .chapter-body,details.mobile-chapter:not([open]) > .chapter-body{display:block!important;}}


/* === RELEASE PATCH: einheitliche Alles-öffnen/-schließen-Icons === */
.icon-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:18px 0 12px}.icon-toolbar .icon-control,.chapter-tools .icon-btn{border:1px solid var(--line);background:#fff;color:#182033;border-radius:999px;width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;font:900 18px/1 var(--sans);box-shadow:var(--shadow);cursor:pointer;text-decoration:none}.icon-toolbar .icon-control:hover,.chapter-tools .icon-btn:hover{background:#fff3dd;transform:translateY(-1px)}.icon-toolbar .icon-control:focus-visible,.chapter-tools .icon-btn:focus-visible{outline:3px solid #79c2d0;outline-offset:3px}.icon-toolbar .hint{font:700 12px/1.3 var(--sans);color:var(--muted);margin-left:2px}.chapter-tools{position:sticky;top:0;z-index:7;background:rgba(255,250,240,.94);backdrop-filter:blur(10px);border-bottom:1px solid rgba(232,220,199,.72);padding:8px 0}.chapter-tools .icon-btn{width:40px;height:40px}.chapter-tools .icon-btn[title*="öffnen"],.icon-toolbar .icon-control[title*="öffnen"]{background:#172033;color:#fff}.chapter-tools .icon-btn[title*="schließen"],.icon-toolbar .icon-control[title*="schließen"]{background:#fff;color:#172033}@media(max-width:900px){.icon-toolbar .hint{display:none}.icon-toolbar .icon-control,.chapter-tools .icon-btn{width:38px;height:38px}.chapter-tools{top:0}}


/* === USER FIX: Lehrbuch-Kapitel sauber geschlossen, kein doppelter Titel im Kartenkörper === */
details.chapter-collapsible:not([open]) > .chapter-body,
details.mobile-chapter:not([open]) > .chapter-body{display:none!important;}
details.chapter-collapsible > summary.chapter-toggle,
details.mobile-chapter > summary.chapter-toggle{list-style:none;cursor:pointer;}
details.chapter-collapsible > summary.chapter-toggle::-webkit-details-marker,
details.mobile-chapter > summary.chapter-toggle::-webkit-details-marker{display:none;}
details.chapter-collapsible .chapter-body > h1:first-child,
details.chapter-collapsible .chapter-body > h2:first-child,
details.mobile-chapter .chapter-body > h1:first-child,
details.mobile-chapter .chapter-body > h2:first-child{margin-top:0;}
@media print{details.chapter-collapsible:not([open]) > .chapter-body,details.mobile-chapter:not([open]) > .chapter-body{display:block!important;}}

/* === FINAL DESIGN POLISH LEHRBUCH === */
.book-page{max-width:1040px}.hero-book{padding-top:56px}.hero-book h1{font-size:clamp(34px,5.4vw,64px)}.reading-intro,.part-intro,.chapter-collapsible{border-radius:24px}.part-intro{margin-top:34px;padding:30px 34px}.part-intro h2{font-size:clamp(28px,3vw,38px)}.chapter-collapsible{margin:18px 0;border-color:#eadcc5;background:#fffef9}.chapter-collapsible>summary{padding:24px 30px;background:linear-gradient(180deg,#fffef8,#fff7e9)}.chapter-icon{width:30px;height:30px;font-size:15px;margin-top:4px;box-shadow:0 6px 16px rgba(15,23,42,.12)}.chapter-summary-text .chapter-kicker{font-size:11px;color:#8a5a22;letter-spacing:.14em}.chapter-summary-text .chapter-title-as-text{font-size:clamp(24px,2.6vw,34px);line-height:1.08;letter-spacing:-.035em}.chapter-summary-text .summary{font-size:18px;line-height:1.48;max-width:820px;color:#556070}.chapter-body{padding:28px 38px 38px}.chapter-body .toc{border:1px solid #eadcc5;background:#fff8ea;border-radius:18px;padding:16px 18px}.chapter-body h2{border-top:1px solid #efe1cb;padding-top:22px;margin-top:34px}.chapter-body h2:first-of-type{border-top:0;padding-top:0}.chapter-body h2::before{content:'§';display:inline-flex;width:1.55rem;height:1.55rem;align-items:center;justify-content:center;margin-right:.45rem;border-radius:999px;background:#182033;color:#fff;font:800 .78rem/1 var(--sans);vertical-align:.15rem}.chapter-body p{max-width:78ch}.chapter-body .lead{font-size:20px;line-height:1.58}.callout,.note,.warning,.tip,.decision,.interview{box-shadow:0 6px 18px rgba(40,30,20,.05)}.codebox,.chapter-body pre{box-shadow:0 14px 30px rgba(15,23,42,.16)}.codecap{background:linear-gradient(180deg,#202b3d,#111827)}.chapter-tools{border-radius:0 0 18px 18px;margin-bottom:18px}.toplink{display:none}.book-nav a{padding:7px 9px}.book-nav details{padding:7px 0}.source-note{background:#fffaf1}.deep-learning-inline{border:1px solid #d7c4a8;border-left:5px solid #1e6b7a;border-radius:16px;background:#fff8ea;padding:14px 16px;margin:18px 0;font:15px/1.55 var(--sans);color:#394356}.deep-learning-inline a{font-weight:800}.chapter-collapsible[open]>summary{background:linear-gradient(180deg,#fff8eb,#fff3dc)}
@media(max-width:900px){.chapter-collapsible>summary{padding:20px 16px}.chapter-summary-text .chapter-title-as-text{font-size:22px}.chapter-summary-text .summary{font-size:16px}.chapter-body{padding:18px 16px 24px}.part-intro{padding:22px 18px}.chapter-body h2{font-size:23px}.chapter-body h2::before{display:none}}

/* === JAVA ENTERPRISE ATLAS THEME + MASTER PDF === */
.theme-book-btn{border:1px solid var(--line);background:#fff;color:#182033;border-radius:999px;width:42px;height:42px;display:inline-grid;place-items:center;cursor:pointer;box-shadow:var(--shadow);font:900 18px/1 var(--sans);margin:4px 0 14px}.book-nav .theme-book-btn{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.2)}
html[data-theme="dark"]{--paper:#111a28;--paper2:#172335;--ink:#e8eef7;--muted:#aebbd0;--line:#34445c;--accent:#ffab72;--accent2:#79cddd;--soft:#1c2a3e;--nav:#09111e;--nav2:#0e1726;--shadow:0 18px 42px rgba(0,0,0,.28)}
html[data-theme="dark"] body{background:linear-gradient(90deg,#09111e 0,#09111e 310px,var(--paper) 310px,var(--paper) 100%)}html[data-theme="dark"] .book-page{background:var(--paper)}html[data-theme="dark"] .hero-book h1,html[data-theme="dark"] .chapter h2.chapter-title,html[data-theme="dark"] .chapter-title-mobile,html[data-theme="dark"] .chapter-summary-text .chapter-title-as-text,html[data-theme="dark"] .chapter-body h2,html[data-theme="dark"] .chapter-body h3{color:var(--ink)}html[data-theme="dark"] .hero-book .lead,html[data-theme="dark"] .chapter .summary,html[data-theme="dark"] .chapter-summary-text .summary,html[data-theme="dark"] .summary-mobile,html[data-theme="dark"] .chapter-body .lead{color:#c2ccda}html[data-theme="dark"] .reading-intro,html[data-theme="dark"] .part-intro,html[data-theme="dark"] .chapter,html[data-theme="dark"] .chapter-collapsible,html[data-theme="dark"] .meta-card,html[data-theme="dark"] .callout,html[data-theme="dark"] .table-scroll,html[data-theme="dark"] .book-figure{background:#162235;border-color:var(--line)}html[data-theme="dark"] .part-intro,html[data-theme="dark"] .chapter-head,html[data-theme="dark"] .chapter-collapsible>summary,html[data-theme="dark"] .chapter-collapsible[open]>summary{background:linear-gradient(180deg,#1b2940,#152235)}html[data-theme="dark"] th{background:#20344b;color:#e9f0f8}html[data-theme="dark"] td{border-color:#34445c}html[data-theme="dark"] .chapter-body code{background:#213148;border-color:#40516b;color:#f0d7b6}html[data-theme="dark"] .note,html[data-theme="dark"] .warning,html[data-theme="dark"] .tip,html[data-theme="dark"] .decision,html[data-theme="dark"] .interview,html[data-theme="dark"] .source-note,html[data-theme="dark"] .deep-learning-inline{background:#1b2a40;border-color:#40516b;color:#d8e2ef}html[data-theme="dark"] .btn.secondary{background:#1b2940;color:#e9f0f8!important;border-color:#40516b}html[data-theme="dark"] .chapter-tools{background:rgba(17,26,40,.94);border-color:#34445c}html[data-theme="dark"] .chapter-tools .icon-btn,html[data-theme="dark"] .icon-toolbar .icon-control{background:#1b2940;color:#e9f0f8;border-color:#40516b}
.pdf-cover,.pdf-colophon{display:none}
@media print{@page{size:A4;margin:16mm 15mm 18mm}.pdf-cover{display:flex;min-height:255mm;page-break-after:always;flex-direction:column;justify-content:center;padding:18mm;border:2pt solid #236f83;border-radius:18pt;background:linear-gradient(145deg,#f2f8fa,#fff)}.pdf-cover .atlas-kicker{font:800 10pt/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:#236f83}.pdf-cover h1{font:900 34pt/.98 var(--sans);letter-spacing:-.04em;color:#172033;margin:12pt 0}.pdf-cover p{font:15pt/1.5 var(--font);color:#44566b;max-width:140mm}.pdf-cover .pdf-meta{margin-top:20mm;display:grid;grid-template-columns:repeat(2,1fr);gap:6mm;font:10pt/1.45 var(--sans)}.pdf-cover .pdf-meta div{border:1pt solid #cddde5;border-radius:9pt;padding:5mm}.pdf-colophon{display:block;page-break-before:always;padding-top:30mm}.book-nav{display:block!important;position:static;height:auto;overflow:visible;background:#fff;color:#172033;border:0;padding:0;page-break-after:always}.book-nav h1{color:#172033;font-size:24pt}.book-nav .sub{color:#607086}.book-nav details{display:block!important;border-top:1pt solid #d8e2eb;padding:4pt 0;break-inside:avoid}.book-nav summary{color:#236f83;font-size:11pt}.book-nav a{display:block!important;color:#172033;padding:1.4pt 0;font-size:8.5pt}.book-nav>.theme-book-btn,.book-nav>.searchbar,.book-nav>.search-buttons,.book-nav>a{display:none!important}.hero-book{display:none}.part-intro{page-break-before:always}.chapter-body pre,.codeblock{white-space:pre-wrap!important;overflow-wrap:anywhere!important;word-break:break-word!important}.chapter-collapsible>summary{background:#fff!important}.book-footer{display:none}}