.bk{--bk-measure:720px;--bk-rail:272px;--bk-gap:clamp(28px,4vw,56px);--bk-top:96px;position:relative}.bk-progress{position:fixed;inset-inline:0;top:0;height:3px;z-index:40;pointer-events:none}.bk-progress__bar{display:block;height:100%;background:var(--grad-brand);transform:scaleX(0);transform-origin:right center;will-change:transform}.bk-cover{background:radial-gradient(1200px 420px at 85% -10%,rgba(139,92,246,.1),transparent 60%),radial-gradient(900px 380px at 10% 0,rgba(6,182,212,.1),transparent 60%),var(--surface-card);box-shadow:0 1px 0 var(--line)}.bk-cover__in{display:grid;grid-template-columns:1.35fr 1fr;grid-gap:clamp(28px,5vw,64px);gap:clamp(28px,5vw,64px);align-items:center;padding-block:clamp(28px,5vw,56px) clamp(40px,6vw,72px)}.bk-cover .crumbs{margin-bottom:22px}.bk-cover__kicker{margin:0 0 10px;font-size:var(--fs-label);font-weight:700;color:var(--text-muted)}.bk-cover__title{margin:0;font-size:var(--fs-display);line-height:var(--lh-display);font-weight:800;color:var(--text-heading);text-wrap:balance}.bk-cover__sub{margin:18px 0 0;font-size:var(--fs-body-lg);line-height:1.75;color:var(--text-body);max-width:560px;text-wrap:pretty}.bk-cover__promises{list-style:none;margin:22px 0 0;padding:0;display:grid;grid-gap:10px;gap:10px}.bk-cover__promises li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;line-height:1.65;color:var(--text-heading)}.bk-cover__promises svg{flex:none;margin-top:3px}.bk-cover__actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.bk-cover__meta{display:flex;flex-wrap:wrap;gap:6px 10px;margin:18px 0 0;font-size:13.5px;color:var(--text-muted)}.bk-cover__art{display:flex;justify-content:center}.bk-book{position:relative;width:min(300px,80vw);aspect-ratio:3/4;transform:perspective(1400px) rotateY(14deg) rotateX(2deg);transform-origin:right center;filter:drop-shadow(0 30px 40px rgba(11,19,43,.22))}.bk-book__cover{position:absolute;inset:0;overflow:hidden;border-radius:6px 16px 16px 6px;background:linear-gradient(160deg,#16224A 0,var(--ink) 60%,#070D20 100%);color:#fff;display:flex;flex-direction:column;padding:30px 28px 26px 34px}.bk-book__spine{position:absolute;inset-block:0;inset-inline-start:0;width:14px;background:var(--grad-brand);box-shadow:inset -3px 0 6px rgba(0,0,0,.25)}.bk-book__kicker{font-size:11px;font-weight:700;opacity:.6}.bk-book__title{margin-top:14px;font-size:30px;line-height:1.12;font-weight:800;text-wrap:balance}.bk-book__rise{position:absolute;inset-inline:-20% -20%;bottom:-38%;height:78%;border-radius:50%;background:radial-gradient(closest-side,rgba(6,182,212,.55),rgba(37,99,235,.28) 55%,transparent 75%);opacity:.85}.bk-book__mark{position:relative;margin-top:auto;color:#fff;opacity:.92}.bk-book__pages{position:absolute;inset-block:6px;inset-inline-end:-8px;width:10px;border-radius:0 3px 3px 0;background:repeating-linear-gradient(90deg,#FFFFFF 0 1px,#E8ECF3 1px 2px);transform:translateZ(-1px)}@media (prefers-reduced-motion:no-preference){.bk-book{transition:transform .36s var(--ease)}.bk-cover__art:hover .bk-book{transform:perspective(1400px) rotateY(6deg) rotateX(1deg)}}.bk-layout{display:grid;grid-template-columns:var(--bk-rail) minmax(0,1fr);grid-gap:var(--bk-gap);gap:var(--bk-gap);align-items:start;padding-block:clamp(28px,4vw,48px) 40px}.bk-main{min-width:0;max-width:var(--bk-measure)}.bk-disclaimer{margin:0 0 8px!important}.bk-rail{position:-webkit-sticky;position:sticky;top:var(--bk-top);max-height:calc(100vh - var(--bk-top) - 20px);overflow:auto;overscroll-behavior:contain;padding:4px 2px 24px;scrollbar-width:thin}.bk-rail__nav{font-size:14px}.bk-rail__top{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;font-size:var(--fs-label);font-weight:700;color:var(--text-muted)}.bk-rail__top:hover{color:var(--primary)}.bk-rail__list,.bk-rail__list ol{list-style:none;margin:0;padding:0}.bk-rail__part{margin-top:14px}.bk-rail__pt{display:block;margin:0 0 6px;font-size:var(--fs-label);font-weight:700;color:var(--text-muted)}.bk-rail__ch>a{display:flex;gap:10px;align-items:baseline;padding:6px 10px;border-radius:10px;color:var(--ink-2);line-height:1.45;transition:background var(--dur) var(--ease),color var(--dur) var(--ease)}.bk-rail__ch>a.is-active,.bk-rail__ch>a:hover{background:var(--surface-card);color:var(--ink)}.bk-rail__ch>a.is-active{font-weight:600;box-shadow:var(--shadow-sm)}.bk-rail__ch.is-planned>a,.bk-rail__n{color:var(--text-muted)}.bk-rail__n{flex:none;width:18px;font-size:12.5px;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.bk-rail__subs{display:none;margin:4px 0 8px;-webkit-padding-start:28px!important;padding-inline-start:28px!important;-webkit-border-start:1px solid var(--line);border-inline-start:1px solid var(--line);-webkit-margin-start:18px!important;margin-inline-start:18px!important}.bk-rail__ch:has(>a.is-active)>.bk-rail__subs{display:block}.bk-rail__subs a{display:flex;gap:8px;padding:5px 10px;border-radius:8px;font-size:13.5px;color:var(--text-muted);line-height:1.45}.bk-rail__subs a:hover{color:var(--ink)}.bk-rail__subs a[aria-current]{color:var(--primary);font-weight:600}.bk-rail__sn{flex:none;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.bk-toc{scroll-margin-top:var(--bk-top);margin-block:18px 8px}.bk-toc__h{margin:0 0 6px;font-size:var(--fs-h2);line-height:var(--lh-h2);font-weight:800;color:var(--text-heading)}.bk-toc__note{margin:0 0 22px;color:var(--text-muted);font-size:15px;line-height:1.7}.bk-toc__grid{display:grid;grid-gap:28px;gap:28px}.bk-toc__pt{margin:0 0 8px;font-size:var(--fs-label);font-weight:700;color:var(--text-muted)}.bk-toc__card{background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-card);padding:16px 18px 14px;margin-bottom:8px}.bk-toc__head{display:grid;grid-template-columns:34px 1fr auto;grid-gap:12px;gap:12px;align-items:start}.bk-toc__n{font-size:15px;font-weight:800;color:var(--text-muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;line-height:1.6}.bk-toc__t{display:flex;flex-direction:column;gap:3px}.bk-toc__t a{font-weight:700;color:var(--text-heading);font-size:16px;line-height:1.5}.bk-toc__t a:hover{color:var(--primary)}.bk-toc__p{font-size:14px;line-height:1.6;color:var(--text-muted)}.bk-toc__subs{list-style:none;margin:12px 0 0;padding:0;-webkit-padding-start:46px;padding-inline-start:46px;display:grid;grid-gap:6px;gap:6px}.bk-toc__subs a{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);line-height:1.55}.bk-toc__subs a:hover{color:var(--primary)}.bk-toc__sn{flex:none;min-width:30px;color:var(--text-muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.bk-toc__rows{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:var(--radius-control);background:var(--surface-card);overflow:hidden}.bk-toc__row{display:grid;grid-template-columns:34px 1fr auto;grid-gap:12px;gap:12px;align-items:center;padding:10px 16px;border-bottom:1px solid var(--line)}.bk-toc__row:last-child{border-bottom:0}.bk-toc__row a{color:var(--ink-2);font-size:15px;line-height:1.5}.bk-toc__row a:hover{color:var(--primary)}.bk-toc__apps{list-style:none;margin:0;padding:0;display:grid;grid-gap:6px;gap:6px}.bk-toc__apps a{color:var(--ink-2);font-size:15px}.bk-toc__apps a:hover{color:var(--primary)}.bk-pill{display:inline-flex;align-items:center;height:24px;padding-inline:10px;border-radius:var(--radius-pill);background:var(--surface-page);border:1px solid var(--line);font-size:12px;font-weight:600;color:var(--text-muted);white-space:nowrap}.bk-pill--live{background:var(--green-soft);border-color:rgba(16,185,129,.25);color:#047857}.bk-part{margin-block:clamp(72px,9vw,120px) 0;padding-block:22px;border-block:1px solid var(--line);scroll-margin-top:var(--bk-top)}.bk-part__t{margin:0;font-size:var(--fs-label);font-weight:800;color:var(--primary)}.bk-part__b{margin:4px 0 0;color:var(--text-muted);font-size:15px}.bk-ch{scroll-margin-top:var(--bk-top);margin-top:clamp(56px,7vw,88px)}.bk-ch__head{position:relative;padding-bottom:30px;margin-bottom:36px;border-bottom:1px solid var(--line)}.bk-emblem{display:inline-flex;align-items:center;justify-content:center;width:72px;height:72px;border-radius:20px;margin-bottom:14px;background:linear-gradient(150deg,#F3F0FE,#EAF0FE 52%,#E3F6FB);border:1px solid rgba(37,99,235,.1);box-shadow:var(--shadow-sm)}.bk-ch__kicker{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 8px;font-size:var(--fs-label);font-weight:700;color:var(--text-muted)}.bk-ch__num{font-size:44px;line-height:1;font-weight:800;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.bk-ch__title{margin:0;font-size:var(--fs-h1);line-height:var(--lh-h1);font-weight:800;color:var(--text-heading);text-wrap:balance;border-radius:10px}.bk-ch__promise{margin:12px 0 0;font-size:var(--fs-body-lg);line-height:1.7;color:var(--text-body);text-wrap:pretty}.bk-ch__meta{display:flex;align-items:center;gap:8px;margin:14px 0 0;font-size:13.5px;color:var(--text-muted)}.bk-lead{margin:0 0 36px;font-size:var(--fs-body-lg);line-height:1.85;color:var(--text-heading);max-inline-size:33em;text-wrap:pretty}.bk-changed{margin:0 0 30px;padding:14px 18px;border-radius:var(--radius-control);background:var(--teal-soft);border:1px solid rgba(6,182,212,.25);font-size:14.5px}.bk-changed__k{margin:0 0 4px;font-size:var(--fs-label);font-weight:800;color:var(--teal-ink)}.bk-changed ul{margin:0;padding:0;list-style:none}.bk-before{margin:0 0 40px;padding:20px 22px;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-control)}.bk-before__k{margin:0 0 8px;font-size:var(--fs-label);font-weight:800;color:var(--text-muted)}.bk-before ul{margin:0;-webkit-padding-start:20px;padding-inline-start:20px;display:grid;grid-gap:10px;gap:10px;line-height:1.75}.bk-sub{scroll-margin-top:var(--bk-top);margin-top:clamp(64px,8vw,96px)}.bk-sub__h{margin:0 0 26px;font-size:var(--fs-h3);line-height:var(--lh-h3);font-weight:800;color:var(--text-heading);text-wrap:balance;border-radius:10px}.bk-sub__h:after{content:"";display:block;width:44px;height:3px;margin-top:14px;border-radius:3px;background:var(--grad-brand);transform-origin:right center}.bk-sub__n{font-size:.72em;font-weight:800;color:var(--primary);-webkit-margin-end:10px;margin-inline-end:10px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.bk-tracks{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:-8px 0 22px}.bk-tracks__k{font-size:13px;font-weight:700;color:var(--text-body)}.bk-anchor{display:inline-flex;vertical-align:middle;align-items:center;justify-content:center;width:30px;height:30px;-webkit-margin-start:8px;margin-inline-start:8px;padding:0;border:0;border-radius:8px;background:transparent;color:var(--text-muted);cursor:pointer;opacity:0;transition:opacity var(--dur) var(--ease),background var(--dur) var(--ease)}.bk-anchor svg{stroke:currentColor}.bk-anchor:focus-visible,.bk-sub__h:hover .bk-anchor{opacity:1;background:var(--surface-card)}@media (hover:none){.bk-anchor{opacity:1}}.bk-p{margin:0 0 1.6em;font-size:18px;line-height:1.85;color:var(--text-body);max-inline-size:36em;text-wrap:pretty}.bk-ol strong,.bk-p strong,.bk-ul strong{color:var(--text-heading);font-weight:700}:is(.bk-sub,.bk-lead,.bk-before,.bk-changed,.bk-close__next,.bk-planned__note,.bk-app) a:not(.btn):not(.tool-callout):not(.bk-deeper):not(.guide-card):not(.bk-fig){color:var(--primary);text-decoration:underline;-webkit-text-decoration-color:rgba(37,99,235,.28);text-decoration-color:rgba(37,99,235,.28);text-underline-offset:3px}:is(.bk-sub,.bk-lead,.bk-before,.bk-changed,.bk-close__next,.bk-planned__note,.bk-app) a:not(.btn):not(.tool-callout):not(.bk-deeper):not(.guide-card):not(.bk-fig):hover{-webkit-text-decoration-color:currentColor;text-decoration-color:currentColor}.bk-ol,.bk-ul{margin:0 0 1.6em;display:grid;grid-gap:14px;gap:14px;font-size:18px;line-height:1.8;max-inline-size:36em}.bk-ol{-webkit-padding-start:22px;padding-inline-start:22px}.bk-ol li::marker{color:var(--primary);font-weight:700}.bk-ul{list-style:none;padding:0}.bk-ul li{position:relative;-webkit-padding-start:24px;padding-inline-start:24px}.bk-ul li:before{content:"";position:absolute;inset-inline-start:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--accent)}:is(.bk-sub,.bk-close__next,.bk-app) a[href^="#c"]{white-space:nowrap}.bk-main a.bk-fig{color:var(--text-heading);font-weight:700;-webkit-text-decoration:underline dotted;text-decoration:underline dotted;-webkit-text-decoration-color:rgba(6,182,212,.7);text-decoration-color:rgba(6,182,212,.7);text-underline-offset:4px;white-space:nowrap;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;unicode-bidi:-webkit-isolate;unicode-bidi:isolate}.bk-main a.bk-fig:hover{color:var(--primary)}.bk-tbl{margin:12px 0 44px}.bk-tbl figcaption{margin:0 0 12px}.bk-tbl__cap{font-size:15.5px;font-weight:700;color:var(--text-heading);line-height:1.5}.bk-tbl__scroll{overflow-x:auto;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-control);-webkit-overflow-scrolling:touch}.bk-tbl__scroll:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.bk-tbl table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.6}.bk-tbl td,.bk-tbl th{padding:12px 16px;text-align:start;vertical-align:top;border-bottom:1px solid var(--line)}.bk-tbl thead th{font-size:var(--fs-label);font-weight:700;color:var(--text-muted);background:var(--surface-page);white-space:nowrap}.bk-tbl tbody th{font-weight:600;color:var(--text-heading)}.bk-tbl tbody tr:last-child>*{border-bottom:0}.bk-tbl .num{text-align:end;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;white-space:nowrap}.bk-tbl__note{margin:10px 0 0;font-size:13.5px;line-height:1.7;color:var(--text-muted)}.bk-tbl--figs tbody tr:target>*{background:var(--teal-soft)}.bk-tbl--figs .bk-figs__src th{padding-block:10px 8px;background:var(--surface-page);font-size:13px;font-weight:500;line-height:1.6;color:var(--text-body);border-top:1px solid var(--line)}.bk-tbl--figs tbody:first-of-type .bk-figs__src th{border-top:0}.bk-figs__k{font-weight:700;color:var(--text-body)}.bk-tbl--figs td:nth-child(3){min-width:120px}.bk-figs__when{display:none}.bk-ex{margin:16px 0 44px;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden}.bk-ex__head{display:flex;gap:12px;align-items:center;padding:18px 22px 14px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#FBFAFF 0,var(--surface-card) 100%)}.bk-ex__head>span{display:flex;flex-direction:column;gap:2px}.bk-ex__k{font-size:var(--fs-label);font-weight:800;color:var(--purple-ink)}.bk-ex__t{font-size:16.5px;font-weight:700;color:var(--text-heading);line-height:1.45}.bk-ex__intro{margin:0;padding:18px 22px 6px;font-size:16.5px;line-height:1.8}.bk-ex__calc{width:100%;border-collapse:collapse;margin:6px 0 0;font-size:15px}.bk-ex__calc td,.bk-ex__calc th{padding:11px 22px;border-bottom:1px dashed var(--line);text-align:start;font-weight:500;line-height:1.55;vertical-align:top}.bk-ex__calc th{color:var(--text-body)}.bk-ex__calc td.num{text-align:end;white-space:nowrap;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--text-heading);font-weight:600}.bk-ex__total td,.bk-ex__total th{border-bottom:0;border-top:2px solid var(--ink);font-weight:800!important;color:var(--text-heading)!important;font-size:16px;background:var(--blue-soft)}.bk-ex__after{margin:0;padding:18px 22px 22px;font-size:16.5px;line-height:1.8;color:var(--text-body)}.bk-pm{flex:none;display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;font-weight:800;font-size:16px;color:var(--ink);background:linear-gradient(var(--surface-card),var(--surface-card)) padding-box,var(--grad-brand) border-box;border:2px solid transparent}.bk-co{display:flex;gap:16px;margin:12px 0 40px;padding:20px 22px;border-radius:var(--radius-control);background:var(--surface-card);border:1px solid var(--line);-webkit-border-start:3px solid var(--accent);border-inline-start:3px solid var(--accent)}.bk-co--remember{border-inline-start-color:var(--primary)}.bk-co--warning{background:var(--warning-soft);border-color:var(--warning-line);border-inline-start-color:var(--warning)}.bk-co--warning .bk-co__k{color:var(--text-body)}.bk-co__icon{flex:none;margin-top:2px}.bk-co__t{margin:0 0 6px;font-weight:700;color:var(--text-heading);font-size:16px;line-height:1.5}.bk-co__k{display:inline-block;-webkit-margin-end:8px;margin-inline-end:8px;font-size:var(--fs-label);font-weight:800;color:var(--text-muted)}.bk-co__d{margin:0;font-size:16.5px;line-height:1.8}.bk-cl{margin:16px 0 44px;padding:22px 24px;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm)}.bk-cl__head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:10px}.bk-cl__title{margin:0;font-weight:800;color:var(--text-heading);font-size:16.5px}.bk-cl__count{margin:0;font-size:13px;font-weight:700;color:var(--text-muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;white-space:nowrap}.bk-cl__list{list-style:none;margin:0;padding:0;display:grid;grid-gap:2px;gap:2px}.bk-cl__list li{display:flex;gap:12px;align-items:flex-start;padding:12px 8px;border-radius:10px;transition:background var(--dur) var(--ease)}.bk-cl__list li:hover{background:var(--surface-page)}.bk-cl__list input{flex:none;width:20px;height:20px;margin-top:4px;accent-color:var(--success);cursor:pointer}.bk-cl__list label{display:flex;flex-direction:column;gap:3px;cursor:pointer}.bk-cl__text{font-size:16px;line-height:1.65;color:var(--text-heading);font-weight:500;transition:color var(--dur) var(--ease)}.bk-cl__note{font-size:14px;line-height:1.65}.bk-cl__list li.is-done .bk-cl__text,.bk-cl__note{color:var(--text-muted)}.bk-cl__reset{margin-top:10px;border:0;background:none;padding:4px 6px;cursor:pointer;font:inherit;font-size:13.5px;color:var(--primary)}.bk-ws{margin:16px 0 44px;padding:22px 24px;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm)}.bk-ws__head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:6px}.bk-ws__title{margin:0;font-weight:800;color:var(--text-heading);font-size:16.5px}.bk-ws__count{margin:0;font-size:var(--fs-label);font-weight:700;color:var(--text-muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;white-space:nowrap}.bk-ws__intro{margin:0 0 6px;font-size:15px;line-height:1.75;color:var(--text-body)}.bk-ws__list{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-gap:18px;gap:18px}.bk-ws__list li{display:grid;grid-gap:6px;gap:6px;align-content:start}@media (min-width:700px){.bk-ws__list{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 22px;margin-bottom:-20px}.bk-ws__list li{grid-row:span 3;grid-template-rows:subgrid;row-gap:6px;padding-bottom:20px}.bk-ws__label{grid-row:1}.bk-ws__hint{grid-row:2}.bk-ws__input,.bk-ws__print{grid-row:3}}.bk-ws__label{display:flex;gap:10px;align-items:baseline;font-size:15.5px;font-weight:700;color:var(--text-heading);line-height:1.5;cursor:pointer}.bk-ws__n{flex:none;display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--blue-soft);color:var(--primary);font-size:12.5px;font-weight:800;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.bk-ws__hint{-webkit-padding-start:34px;padding-inline-start:34px;font-size:13.5px;line-height:1.6;color:var(--text-muted)}.bk-ws__input{display:block;width:100%;min-height:64px;resize:none;padding:10px 12px;font:inherit;font-size:16px;line-height:1.6;color:var(--text-heading);background:var(--surface-page);border:1.5px solid var(--line);border-radius:var(--radius-control);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}.bk-ws__input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--focus-ring)}.bk-ws__print{display:none}.bk-ws__actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;margin-top:18px}.bk-ws__reset{border:0;background:none;padding:4px 6px;cursor:pointer;font:inherit;font-size:13.5px;color:var(--primary)}.bk-ws__undo{display:flex;flex-wrap:wrap;align-items:center;gap:4px;margin:0;font-size:14px;color:var(--text-body)}.bk-ws__note{margin:12px 0 0;font-size:13px;color:var(--text-muted)}.bk-dg{margin:16px 0 44px;padding:clamp(18px,2.8vw,28px);background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-card)}.bk-dg>figcaption{margin-top:14px;font-size:14.5px;line-height:1.7;color:var(--text-body)}.bk-dg__alt{margin-top:10px;font-size:14px}.bk-dg__alt summary{cursor:pointer;color:var(--primary);font-weight:600;width:-moz-fit-content;width:fit-content;padding-block:6px}.bk-dg__alt p{margin:8px 0 0;line-height:1.8;color:var(--text-body)}.bk-dg svg{display:block;width:100%;height:auto;font-family:var(--font-body)}.bk-dg text{fill:var(--ink-2);font-size:12px}.bk-dg .dg-strong{fill:var(--ink);font-weight:700}.bk-dg .dg-muted{fill:var(--text-muted)}.dg-flow{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.dg-flow__col{border:1px solid var(--line);border-radius:var(--radius-control);padding:14px;background:var(--surface-page)}.dg-flow__h{margin:0 0 10px;font-size:13px;font-weight:800;color:var(--text-muted)}.dg-flow__src{margin:0 0 8px;padding:10px 12px;border-radius:10px;background:var(--ink);color:#fff;font-weight:700;font-size:14.5px;text-align:center}.dg-flow__arrow{display:block;margin:2px auto 8px;width:2px;height:16px;background:linear-gradient(var(--line),var(--primary))}.dg-flow__row{display:flex;justify-content:space-between;gap:10px;align-items:center;margin:0 0 6px;padding:8px 12px;border-radius:10px;background:var(--surface-card);border:1px solid var(--line);font-size:14px}.dg-flow__row b{color:var(--text-heading);font-weight:700}.dg-flow__row span{color:var(--text-muted);font-size:12.5px;text-align:end}.dg-flow__row--you{border-color:rgba(16,185,129,.4);background:var(--green-soft)}.dg-flow__row--you span{color:var(--ink-2)}.dg-flow__row--who{border-style:dashed}.dg-time{position:relative;display:grid;grid-template-columns:repeat(4,1fr);grid-gap:0;gap:0;margin:4px 0 0;padding:0;list-style:none}.dg-time:before{content:"";position:absolute;top:13px;inset-inline:12px;height:2px;background:linear-gradient(to left,var(--line),var(--primary))}.dg-time__s{position:relative;padding-top:34px;padding-inline:6px;text-align:center}.dg-time__s:before{content:"";position:absolute;top:6px;inset-inline-start:calc(50% - 8px);width:16px;height:16px;border-radius:50%;background:var(--surface-card);border:3px solid var(--primary)}.dg-time__s--pay:before{border-color:var(--success);background:var(--success)}.dg-time__d{display:block;font-size:12.5px;font-weight:800;color:var(--text-muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.dg-time__t{display:block;margin-top:3px;font-size:14px;line-height:1.5;color:var(--text-heading);font-weight:600}.dg-br{display:grid;grid-gap:14px;gap:14px}.dg-br__scale{display:flex;border-radius:10px;overflow:hidden;border:1px solid var(--line)}.dg-br__band{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;padding:8px 4px;min-width:0;background:var(--surface-page);text-align:center;-webkit-border-start:1px solid var(--line);border-inline-start:1px solid var(--line)}.dg-br__band:first-child{-webkit-border-start:0;border-inline-start:0}.dg-br__band:nth-child(2){background:#F1F5FD}.dg-br__band:nth-child(3){background:#E7EEFC}.dg-br__band:nth-child(4){background:#DCE7FB}.dg-br__band b{font-size:15px;color:var(--ink);font-weight:800}.dg-br__band small{font-size:11px;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.dg-br__thr{display:none;margin:0;font-size:13px;line-height:1.7;color:var(--ink-2)}.dg-br__row{display:grid;grid-gap:6px;gap:6px}.dg-br__who{margin:0;font-size:13.5px;font-weight:700;color:var(--text-heading)}.dg-br__track{position:relative;display:flex;height:38px;border-radius:10px;background:var(--surface-page);border:1px solid var(--line);overflow:hidden}.dg-br__tick{position:absolute;top:0;bottom:0;width:0;-webkit-border-start:1px dashed #B9C3D3;border-inline-start:1px dashed #B9C3D3;z-index:1}.dg-br__seg{display:flex;align-items:center;justify-content:center;min-width:0;font-size:12.5px;font-weight:700;white-space:nowrap;overflow:hidden}.dg-br__seg--salary{background:rgba(11,19,43,.82);color:#fff}.dg-br__seg--side{background:var(--primary);color:#fff;z-index:2}.dg-br__legend,.dg-rw__legend{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;margin:4px 0 0;font-size:13px;color:var(--text-muted);line-height:1.6}.dg-br__key,.dg-rw__key{display:inline-block;flex:none;width:12px;height:12px;border-radius:3px}.dg-key{display:inline-flex;align-items:center;gap:6px}.dg-br__key--salary{background:rgba(11,19,43,.82)}.dg-br__key--side{background:var(--primary)}.dg-rw__plot{position:relative;display:flex;align-items:flex-end;gap:clamp(6px,2vw,16px);height:220px;padding:0 4px;border-bottom:1px solid var(--line)}.dg-rw__line{position:absolute;inset-inline:0;height:0;border-top:2px dashed var(--ink-2);z-index:2}.dg-rw__line small{position:absolute;inset-inline-start:0;top:-22px;font-size:12px;font-weight:700;color:var(--ink-2);background:var(--surface-card);padding-inline:4px}.dg-rw__col{position:relative;flex:1 1;height:100%}.dg-rw__bar{bottom:0;background:linear-gradient(180deg,var(--teal) 0,var(--primary) 100%)}.dg-rw__bar,.dg-rw__gap{position:absolute;inset-inline:0;border-radius:8px 8px 0 0}.dg-rw__gap{background:repeating-linear-gradient(135deg,rgba(245,158,11,.3) 0 6px,rgba(245,158,11,.12) 6px 12px);border:1px solid rgba(245,158,11,.55);border-bottom:0;display:flex;align-items:flex-start;justify-content:center}.dg-rw__gap small{margin-top:4px;font-size:11px;font-weight:700;color:#92400E;white-space:nowrap}.dg-rw__x{display:flex;gap:clamp(6px,2vw,16px);padding:8px 4px 0}.dg-rw__x span{flex:1 1;display:flex;flex-direction:column;align-items:center;gap:1px;font-size:12px;font-weight:700;color:var(--text-heading);text-align:center}.dg-rw__x small{font-size:11px;font-weight:500;color:var(--text-muted)}.dg-rw__key--bar{background:linear-gradient(180deg,var(--teal),var(--primary))}.dg-rw__key--gap{background:rgba(245,158,11,.4);border:1px solid rgba(245,158,11,.7)}.bk-tool{margin:20px 0 44px}.bk-tool__lead{margin:0 0 6px;font-size:15.5px;line-height:1.7}.bk-tool__k{display:inline-block;-webkit-margin-end:8px;margin-inline-end:8px;font-size:var(--fs-label);font-weight:800;color:var(--text-muted)}.bk-deeper{display:grid;grid-gap:4px;gap:4px;margin:12px 0 40px;padding:16px 20px;border-radius:var(--radius-control);background:var(--surface-card);border:1px solid var(--line);transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease)}.bk-deeper:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.bk-deeper__k{display:inline-flex;align-items:center;gap:6px;font-size:var(--fs-label);font-weight:800;color:var(--text-muted)}.bk-deeper__t{font-weight:700;color:var(--text-heading);font-size:16px}.bk-deeper__d{font-size:14.5px;line-height:1.65;color:var(--text-body)}.bk-close{margin-top:clamp(56px,7vw,80px);padding-top:32px;border-top:1px solid var(--line)}.bk-close__k{margin:0 0 12px;font-size:var(--fs-label);font-weight:800;color:var(--text-muted)}.bk-close__remember{padding:24px 26px;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);position:relative;overflow:hidden}.bk-close__remember:before{content:"";position:absolute;inset-block-start:0;inset-inline:0;height:3px;background:var(--grad-brand);transform-origin:right center}.bk-close__remember ol{list-style:none;margin:0;padding:0;display:grid;grid-gap:16px;gap:16px}.bk-close__remember li{display:flex;gap:12px;align-items:flex-start;font-size:16px;line-height:1.75;color:var(--text-heading)}.bk-close__i{flex:none;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--blue-soft);color:var(--primary);font-weight:800;font-size:14px}.bk-close__next{margin:32px 0 24px;font-size:16.5px;line-height:1.8}.bk-close__foot{margin-top:28px}.bk-close__upd{margin:14px 0 0;font-size:13px;color:var(--text-muted);line-height:1.7}.bk-srcs{margin-top:12px;font-size:13.5px;line-height:1.6;color:var(--text-muted)}.bk-srcs summary{display:inline-flex;align-items:center;gap:7px;min-height:32px;padding:4px 12px 4px 10px;-webkit-margin-start:-10px;margin-inline-start:-10px;border-radius:var(--radius-pill);cursor:pointer;list-style:none;font-weight:600;color:var(--text-muted);transition:background var(--dur) var(--ease),color var(--dur) var(--ease)}.bk-srcs summary::-webkit-details-marker{display:none}.bk-srcs summary:hover{background:var(--surface-card);color:var(--ink)}.bk-srcs summary svg{flex:none}.bk-srcs__chev{flex:none;width:6px;height:6px;margin:-3px 2px 0;border-right:1.5px solid;border-bottom:1.5px solid;transform:rotate(45deg);transition:transform var(--dur) var(--ease)}.bk-srcs[open] .bk-srcs__chev{transform:rotate(-135deg);margin-top:3px}.bk-srcs ul{list-style:none;margin:8px 0 0;padding:12px 16px;display:grid;grid-gap:8px;gap:8px;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-control)}.bk-srcs li{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 10px}.bk-main .bk-srcs a{color:var(--ink-2);font-weight:500;text-decoration:underline;-webkit-text-decoration-color:rgba(37,99,235,.25);text-decoration-color:rgba(37,99,235,.25);text-underline-offset:3px}.bk-main .bk-srcs a:hover{color:var(--primary);-webkit-text-decoration-color:currentColor;text-decoration-color:currentColor}.bk-srcs__asof{font-size:12.5px;color:var(--text-muted)}.bk-srcs--wide ul{display:block;column-count:2;column-gap:28px}.bk-srcs--wide li{page-break-inside:avoid;break-inside:avoid;margin-bottom:8px}.bk-srcs--wide li:last-child{margin-bottom:0}.bk-ch--planned .bk-ch__head{border-bottom-style:dashed}.bk-ch--planned .bk-ch__title{font-size:var(--fs-h3);color:var(--ink-2)}.bk-ch--planned .bk-ch__num{font-size:30px;background:none;-webkit-text-fill-color:currentColor;color:var(--text-muted)}.bk-planned__subs{list-style:none;margin:0;padding:0;display:grid;grid-gap:6px;gap:6px}.bk-planned__subs li{display:flex;gap:12px;font-size:15.5px;color:var(--ink-2);scroll-margin-top:var(--bk-top)}.bk-planned__subs li:target{color:var(--primary);font-weight:600}.bk-planned__note{margin:16px 0 0;font-size:14.5px;color:var(--text-muted);line-height:1.7}.bk-apps{margin-top:clamp(64px,9vw,110px);scroll-margin-top:var(--bk-top);padding-top:18px;border-top:1px solid var(--line)}.bk-apps__h{margin:0 0 8px;font-size:var(--fs-h1);line-height:var(--lh-h1);font-weight:800;color:var(--text-heading)}.bk-app{margin-top:34px;scroll-margin-top:var(--bk-top)}.bk-app__h{display:flex;align-items:center;gap:10px;margin:0 0 12px;font-size:var(--fs-h3);font-weight:800;color:var(--text-heading);border-radius:10px}.bk-app--planned .bk-app__h{color:var(--ink-2);font-size:19px}.bk-log{list-style:none;margin:0;padding:0;display:grid;grid-gap:10px;gap:10px}.bk-log li{display:grid;grid-template-columns:150px 1fr;grid-gap:12px;gap:12px;font-size:15px;line-height:1.7}.bk-log b{color:var(--text-heading);font-weight:700}.bk-fab{display:none}.bk[data-fab=off] .bk-fab{opacity:0;pointer-events:none}.bk-sheet{width:min(560px,100vw);max-width:100vw;max-height:82vh;margin:auto auto 0;padding:0;border:0;border-radius:24px 24px 0 0;background:var(--surface-page);box-shadow:var(--shadow-lg)}.bk-sheet::-webkit-backdrop{background:rgba(11,19,43,.38)}.bk-sheet::backdrop{background:rgba(11,19,43,.38)}.bk-sheet__head{position:-webkit-sticky;position:sticky;top:0;display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:var(--surface-page);border-bottom:1px solid var(--line);z-index:1}.bk-sheet__title{margin:0;font-weight:800;color:var(--text-heading)}.bk-sheet__close{border:0;background:var(--surface-card);border-radius:var(--radius-pill);padding:8px 14px;font:inherit;font-size:14px;cursor:pointer;color:var(--ink);box-shadow:var(--shadow-sm)}.bk-sheet [data-sheet-slot]{padding:12px 16px 32px}.bk-sheet .bk-rail__subs{display:block}.bk-resume{position:fixed;z-index:30;inset-inline:0;bottom:calc(20px + env(safe-area-inset-bottom));margin-inline:auto;width:-moz-fit-content;width:fit-content;max-width:calc(100vw - 32px);display:flex;gap:4px;align-items:center;padding:6px 6px 6px 8px;border-radius:var(--radius-pill);background:var(--ink);color:#fff;box-shadow:var(--shadow-lg)}.bk-resume__go{padding:6px 12px;color:#fff;font-size:14.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bk-resume__x{flex:none;width:30px;height:30px;border:0;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:18px;cursor:pointer}@media (prefers-reduced-motion:no-preference){.bk-resume{animation:rise .36s var(--ease) both}}.bk-toast{position:fixed;z-index:50;inset-inline:0;top:18px;margin-inline:auto;width:-moz-fit-content;width:fit-content;padding:8px 16px;border-radius:var(--radius-pill);background:var(--ink);color:#fff;font-size:14px;font-weight:600;box-shadow:var(--shadow-md);opacity:0;transform:translateY(-6px);pointer-events:none;transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}.bk-toast:not(:empty){opacity:1;transform:none}@media screen and (prefers-reduced-motion:no-preference){.bk-in{transition:opacity .38s var(--ease),transform .38s var(--ease)}.bk-pending{opacity:0;transform:translateY(18px)}.bk-pending.bk-rv--soft{transform:translateY(8px)}.bk-in .bk-st{transition:opacity .34s var(--ease),transform .34s var(--ease);transition-delay:calc(90ms + min(var(--i, 0), 9) * 45ms)}.bk-pending .bk-st{opacity:0;transform:translateY(8px)}.bk-pending.bk-rv--h{transform:translateY(10px)}.bk-in.bk-rv--h:after{transition:transform .4s var(--ease) .16s}.bk-pending.bk-rv--h:after{transform:scaleX(0)}.bk-pending.bk-rv--head{opacity:1;transform:none}.bk-in.bk-rv--head .bk-emblem{transition:opacity .32s var(--ease),transform .38s var(--ease)}.bk-pending.bk-rv--head .bk-emblem{opacity:0;transform:scale(.88)}.bk-in.bk-rv--head .bk-emblem path[pathLength]{stroke-dasharray:1;transition:stroke-dashoffset .4s var(--ease) .14s}.bk-in.bk-rv--head .bk-emblem path:nth-child(2){transition-delay:.23s}.bk-in.bk-rv--head .bk-emblem path:nth-child(3){transition-delay:.32s}.bk-pending.bk-rv--head .bk-emblem path[pathLength]{stroke-dashoffset:1}.bk-in.bk-rv--head :is(.bk-ch__kicker,.bk-ch__title,.bk-ch__promise,.bk-ch__meta){transition:opacity .38s var(--ease),transform .38s var(--ease)}.bk-in.bk-rv--head .bk-ch__title{transition-delay:90ms}.bk-in.bk-rv--head .bk-ch__promise{transition-delay:.17s}.bk-in.bk-rv--head .bk-ch__meta{transition-delay:.24s}.bk-pending.bk-rv--head :is(.bk-ch__kicker,.bk-ch__title,.bk-ch__promise,.bk-ch__meta){opacity:0;transform:translateY(12px)}.bk-in.bk-co .bk-co__icon{transition:opacity .3s var(--ease) .15s,transform .3s var(--ease) .15s}.bk-pending.bk-co .bk-co__icon{opacity:0;transform:scale(.6)}.bk-in .bk-ex__total>*{transition:background-color .38s var(--ease);transition-delay:calc(.26s + min(var(--i, 0), 9) * 45ms)}.bk-pending .bk-ex__total>*{background-color:var(--surface-page)}.bk-in.bk-close__remember:before{transition:transform .4s var(--ease) 60ms}.bk-pending.bk-close__remember:before{transform:scaleX(0)}.bk-in .bk-close__i{transition:transform .3s var(--ease);transition-delay:calc(.16s + min(var(--i, 0), 9) * 45ms)}.bk-pending .bk-close__i{transform:scale(.4)}.bk-in .dg-rw__bar{transform-origin:bottom;transition:transform .38s var(--ease);transition-delay:calc(.12s + var(--i, 0) * 60ms)}.bk-pending .dg-rw__bar{transform:scaleY(0)}.bk-in .dg-rw__gap{transition:opacity .3s var(--ease);transition-delay:calc(.42s + var(--i, 0) * 60ms)}.bk-pending .dg-rw__gap{opacity:0}.bk-in .dg-rw__line{transition:opacity .3s var(--ease) 80ms}.bk-pending .dg-rw__line{opacity:0}.bk-in .dg-br__seg{-webkit-clip-path:inset(0);clip-path:inset(0);transition:-webkit-clip-path .38s var(--ease);transition:clip-path .38s var(--ease);transition:clip-path .38s var(--ease),-webkit-clip-path .38s var(--ease);transition-delay:calc(.14s + var(--i, 0) * .14s)}.bk-in .dg-br__seg--side{transition-delay:calc(.3s + var(--i, 0) * .14s)}.bk-pending .dg-br__seg{-webkit-clip-path:inset(0 0 0 100%);clip-path:inset(0 0 0 100%)}.bk-in .dg-flow__arrow{transform-origin:top;transition:transform .3s var(--ease) .12s}.bk-pending .dg-flow__arrow{transform:scaleY(0)}.bk-in .dg-time:before{transition:opacity .38s var(--ease) 60ms}.bk-pending .dg-time:before{opacity:0}.bk-in .dg-time__s:before{transition:transform .3s var(--ease);transition-delay:calc(.16s + var(--i, 0) * 45ms)}.bk-pending .dg-time__s:before{transform:scale(.3)}.bk-srcs[open] ul{animation:bk-drop .22s var(--ease)}@keyframes bk-drop{0%{opacity:0;transform:translateY(-4px)}}.bk-app:target>.bk-app__h,.bk-ch:target .bk-ch__title,.bk-sub:target>.bk-sub__h{animation:bk-flash 1.6s var(--ease) 1}@keyframes bk-flash{0%,35%{background-color:var(--teal-soft);box-shadow:0 0 0 10px var(--teal-soft)}to{background-color:transparent;box-shadow:0 0 0 10px transparent}}.bk-book{animation:bk-book-in .4s var(--ease) .12s backwards}@keyframes bk-book-in{0%{opacity:0;transform:perspective(1400px) rotateY(30deg) rotateX(4deg) translateY(12px)}}}@media (max-width:1080px){.bk-layout{grid-template-columns:minmax(0,1fr)}.bk-rail{display:none}.bk-main{width:100%}.bk-fab,.bk-main{margin-inline:auto}.bk-fab{display:inline-flex;position:fixed;z-index:30;inset-inline:0;bottom:calc(16px + env(safe-area-inset-bottom));width:-moz-fit-content;width:fit-content;align-items:center;gap:8px;height:46px;padding-inline:18px;border:0;border-radius:var(--radius-pill);background:var(--ink);color:#fff;font:inherit;font-size:14.5px;font-weight:700;cursor:pointer;box-shadow:var(--shadow-lg);transition:opacity var(--dur) var(--ease)}.bk-fab__at:not(:empty):before{content:"·";-webkit-margin-end:8px;margin-inline-end:8px;opacity:.5}.bk-fab__at{font-weight:500;opacity:.85}.bk-resume{bottom:calc(74px + env(safe-area-inset-bottom))}}@media (max-width:860px){.bk-cover__in{grid-template-columns:1fr}.bk-cover__art{order:0;justify-content:center}.bk-book{width:150px}.bk-book__title{font-size:16px}.bk-book__kicker{font-size:9px}.bk-book__cover{padding:16px 14px 14px 20px}.bk-book__spine{width:10px}.dg-flow{grid-template-columns:1fr}}@media (max-width:620px){.bk{--bk-top:94px}.bk-ol,.bk-p,.bk-ul{font-size:17px;line-height:1.8;margin-bottom:1.5em}.bk-sub{margin-top:56px}.bk-lead{font-size:17.5px}.bk-toc__subs{-webkit-padding-start:0;padding-inline-start:0}.bk-toc__head,.bk-toc__row{grid-template-columns:28px 1fr}.bk-toc__head .bk-pill,.bk-toc__row .bk-pill{grid-column:2;justify-self:start}.dg-br__band small{display:none}.dg-br__thr{display:block}.bk-before,.bk-cl,.bk-close__remember,.bk-co,.bk-ex__after,.bk-ex__calc td,.bk-ex__calc th,.bk-ex__head,.bk-ex__intro,.bk-ws{padding-inline:16px}.bk-co{gap:12px}.bk-cl__list li{padding-inline:4px}.bk-tbl td,.bk-tbl th{padding:11px 12px}.bk-log li{grid-template-columns:1fr;gap:2px}.bk-srcs--wide ul{column-count:1}.bk-tbl--figs tbody td:nth-child(3),.bk-tbl--figs thead th:nth-child(3){display:none}.bk-tbl--figs .bk-figs__when{display:block;margin-top:2px;font-size:12.5px;font-weight:500;color:var(--text-muted)}.dg-time{grid-template-columns:1fr;gap:14px}.dg-time:before{top:0;bottom:0;inset-inline-start:12px;inset-inline-end:auto;width:2px;height:auto;background:linear-gradient(180deg,var(--line),var(--primary))}.dg-time__s{padding:0;-webkit-padding-start:36px;padding-inline-start:36px;text-align:start}.dg-time__s:before{top:2px;inset-inline-start:5px}}.bk-ch{content-visibility:auto;contain-intrinsic-size:auto 1400px}.bk-ch--planned{contain-intrinsic-size:auto 420px}.bk :is(a,summary,button):focus-visible{outline:2px solid var(--primary);outline-offset:2px}@media (max-width:620px){.bk-tbl--stack thead{display:none}.bk-tbl--stack :is(table,tbody,tr){display:block}.bk-tbl--stack tbody tr{padding:14px 16px;border-bottom:1px solid var(--line)}.bk-tbl--stack tbody tr:last-child{border-bottom:0}.bk-tbl--stack tbody :is(th,td){display:block;padding:0;border:0}.bk-tbl--stack tbody th{margin-bottom:6px;font-size:16px}.bk-tbl--stack tbody td{padding-block:4px}.bk-tbl--stack tbody td:before{content:attr(data-label);display:block;font-size:var(--fs-label);font-weight:700;color:var(--text-muted)}.bk-tbl--stack tbody td.num{display:flex;justify-content:space-between;align-items:baseline;gap:12px;text-align:start}}@media print{.bk-anchor,.bk-cl__reset,.bk-cover__actions,.bk-dg__alt summary,.bk-fab,.bk-progress,.bk-rail,.bk-resume,.bk-sheet,.bk-toast,.bk-tool,.bk-ws__actions,.bk-ws__count,.bk-ws__input,.bk-ws__note,.ftr,.hdr,.mnav{display:none!important}.bk-ws__print{display:block;min-height:3.4em;padding:6px 10px;white-space:pre-wrap;font-size:13px;line-height:1.6;color:var(--text-heading);border:1px solid var(--gray-500);border-radius:8px}.bk-layout{display:block;padding:0}.bk-main{max-width:none}.bk-ch{content-visibility:visible;page-break-before:always;break-before:page}.bk-ch--planned{page-break-before:auto;break-before:auto}.bk-cl,.bk-co,.bk-dg,.bk-ex,.bk-tbl,.bk-ws{page-break-inside:avoid;break-inside:avoid;box-shadow:none}.bk-dg__alt,.bk-dg__alt p,.bk-dg__alt[open] p{display:block}.bk-main a[href^=http]:after{content:" (" attr(href) ")";font-size:10px;color:#555;word-break:break-all}.bk-book{transform:none;filter:none;animation:none}.bk-srcs summary{padding:0;margin:0}.bk-srcs__chev{display:none}.bk-srcs--wide ul{column-count:1}body{background:#fff}}