.published-textbook-page{--book-accent:#4f5bd5;--book-accent-rgb:79, 91, 213;--book-secondary:#0ea5a4;--book-secondary-rgb:14, 165, 164;--book-deep:#172142;--book-soft:#eef1ff;--book-warm:#d99b20;--book-paper:#fffefa;--book-rule:#313e7321;background:radial-gradient(circle at 5% 0%, rgba(var(--book-accent-rgb), .09), transparent 24%), radial-gradient(circle at 95% 8%, rgba(var(--book-secondary-rgb), .07), transparent 22%), linear-gradient(180deg, #fafbff 0%, #f7f8fc 38%, #fbfbfd 100%);min-height:70vh;padding:32px 0 88px;position:relative}.published-textbook-page[data-subject=astronomy]{--book-accent:#5566da;--book-accent-rgb:85, 102, 218;--book-secondary:#8a63dc;--book-secondary-rgb:138, 99, 220;--book-deep:#111b45;--book-soft:#eef0ff}.published-textbook-page[data-subject=science]{--book-accent:#267e9c;--book-accent-rgb:38, 126, 156;--book-secondary:#159b82;--book-secondary-rgb:21, 155, 130;--book-deep:#15354d;--book-soft:#ebf7fa}.published-textbook-page[data-subject=computer-science]{--book-accent:#4962ce;--book-accent-rgb:73, 98, 206;--book-secondary:#0d9e92;--book-secondary-rgb:13, 158, 146;--book-deep:#17243e;--book-soft:#edf2ff}.published-textbook-page[data-subject=history]{--book-accent:#8c5f3e;--book-accent-rgb:140, 95, 62;--book-secondary:#b48748;--book-secondary-rgb:180, 135, 72;--book-deep:#3c2e28;--book-soft:#fbf3e8}.published-textbook-page[data-subject=financial-foundations],.published-textbook-page[data-subject=banking-credit],.published-textbook-page[data-subject=personal-finance],.published-textbook-page[data-subject=investing],.published-textbook-page[data-subject=financial-markets],.published-textbook-page[data-subject=economics]{--book-accent:#396bc6;--book-accent-rgb:57, 107, 198;--book-secondary:#168d76;--book-secondary-rgb:22, 141, 118;--book-deep:#142947;--book-soft:#edf5ff}.published-textbook-shell{position:relative}.published-textbook-breadcrumb{color:#6d7890;flex-wrap:wrap;align-items:center;gap:7px;margin:0 0 14px;font-size:.76rem;font-weight:760;display:flex}.published-textbook-breadcrumb a{color:inherit;text-decoration:none}.published-textbook-breadcrumb a:hover{color:var(--book-accent)}.published-textbook-hero{border:1px solid rgba(var(--book-accent-rgb), .18);background:radial-gradient(circle at 88% 10%, rgba(var(--book-secondary-rgb), .22), transparent 31%), radial-gradient(circle at 10% 95%, rgba(var(--book-accent-rgb), .24), transparent 34%), linear-gradient(138deg, var(--book-deep) 0%, #243768 62%, #1b5263 120%);color:#fff;border-radius:34px;grid-template-columns:minmax(0,1fr) minmax(220px,310px);align-items:end;gap:clamp(30px,5vw,62px);padding:clamp(34px,6vw,68px);display:grid;position:relative;overflow:hidden;box-shadow:0 34px 92px #19265633}.published-textbook-hero:after{content:"";pointer-events:none;border:1px solid #ffffff1f;border-radius:50%;width:360px;height:360px;position:absolute;top:-180px;right:-155px;box-shadow:0 0 0 55px #ffffff06,0 0 0 112px #ffffff05}.published-textbook-hero-copy,.published-textbook-edition{z-index:1;position:relative}.published-textbook-kicker{color:var(--book-accent);letter-spacing:.15em;text-transform:uppercase;margin:0 0 10px;font-size:.69rem;font-weight:950}.published-textbook-hero .published-textbook-kicker{color:#a9e8df}.published-textbook-hero h1{letter-spacing:-.061em;text-wrap:balance;max-width:900px;margin:0;font-size:clamp(3rem,6.5vw,6.4rem);line-height:.94}.published-textbook-deck{color:#f5f8ffd4;max-width:760px;margin:22px 0 0;font-size:clamp(1rem,1.7vw,1.18rem);line-height:1.67}.published-textbook-deck strong{color:#fff}.published-textbook-meta{flex-wrap:wrap;gap:9px;margin-top:26px;display:flex}.published-textbook-meta span{color:#ffffffe0;text-transform:capitalize;background:#ffffff14;border:1px solid #ffffff1f;border-radius:999px;padding:7px 10px;font-size:.71rem;font-weight:800}.published-textbook-edition{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffff14;border:1px solid #ffffff24;border-radius:23px;align-content:end;align-self:stretch;padding:22px;display:grid}.published-textbook-edition>span{color:#a9e8df;letter-spacing:.1em;text-transform:uppercase;font-size:.66rem;font-weight:900}.published-textbook-edition>strong{color:#fff;letter-spacing:-.04em;margin:5px 0 18px;font-size:1.75rem}.published-textbook-edition dl{gap:9px;margin:0;display:grid}.published-textbook-edition dl>div{border-top:1px solid #ffffff1a;justify-content:space-between;gap:14px;padding-top:9px;display:flex}.published-textbook-edition dt,.published-textbook-edition dd{margin:0;font-size:.71rem}.published-textbook-edition dt{color:#ffffff9e}.published-textbook-edition dd{color:#fff;text-align:right;font-weight:760}.published-textbook-caution{background:linear-gradient(145deg,#fffdf7,#fff6e4);border:1px solid #cd932a36;border-radius:17px;margin:18px 0 0;padding:17px 20px}.published-textbook-caution.risk-red{background:linear-gradient(145deg,#fff,#fff0ed);border-color:#ca5c5136}.published-textbook-caution strong{color:#865e17;margin-bottom:4px;display:block}.published-textbook-caution.risk-red strong{color:#a34941}.published-textbook-caution p{color:#625f67;margin:0;line-height:1.6}.published-textbook-overview{border:1px solid var(--book-rule);background:radial-gradient(circle at 100% 0%, rgba(var(--book-secondary-rgb), .08), transparent 30%), var(--book-paper);border-radius:28px;grid-template-columns:minmax(260px,.55fr) minmax(0,1.45fr);gap:36px;margin:28px 0 42px;padding:clamp(24px,4vw,36px);display:grid;box-shadow:0 16px 48px #28346812}.published-textbook-overview h2{color:#17213d;letter-spacing:-.04em;margin:0 0 10px;font-size:clamp(1.75rem,3vw,2.55rem);line-height:1.04}.published-textbook-overview>div>p:last-child{color:#667188;margin:0;line-height:1.62}.published-textbook-overview>nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;display:grid}.published-textbook-overview>nav>a{border:1px solid rgba(var(--book-accent-rgb), .1);color:#26324e;background:#ffffffc7;border-radius:13px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px;min-width:0;padding:10px 12px;text-decoration:none;display:grid}.published-textbook-overview>nav>a:hover{border-color:rgba(var(--book-accent-rgb), .28);background:#fff}.published-textbook-overview nav>a>span{background:var(--book-soft);width:31px;height:31px;color:var(--book-accent);border-radius:9px;place-items:center;font-size:.66rem;font-weight:950;display:grid}.published-textbook-overview nav>a>div{gap:2px;min-width:0;display:grid}.published-textbook-overview nav small{color:#8993a6;letter-spacing:.045em;text-transform:uppercase;font-size:.6rem;font-weight:850}.published-textbook-overview nav strong{color:#25314b;text-overflow:ellipsis;white-space:nowrap;font-size:.78rem;line-height:1.25;overflow:hidden}.published-textbook-layout{grid-template-columns:255px minmax(0,1fr);align-items:start;gap:clamp(34px,5vw,70px);display:grid}.published-textbook-rail{gap:14px;display:grid;position:sticky;top:98px}.published-textbook-rail-card,.published-textbook-rail-note{border:1px solid var(--book-rule);background:#ffffffd6;border-radius:20px;box-shadow:0 10px 30px #2b35630d}.published-textbook-rail-card{padding:18px;overflow:hidden}.published-textbook-rail-card>span{color:#6a758d;letter-spacing:.09em;text-transform:uppercase;margin-bottom:11px;font-size:.65rem;font-weight:900;display:block}.published-textbook-rail-card nav{display:grid}.published-textbook-rail-card a{color:#4d5870;border-top:1px solid #35417514;grid-template-columns:auto minmax(0,1fr);gap:8px;padding:9px 0;font-size:.74rem;line-height:1.35;text-decoration:none;display:grid}.published-textbook-rail-card a:first-child{border-top:0}.published-textbook-rail-card a:hover{color:var(--book-accent)}.published-textbook-rail-card b{color:var(--book-accent);font-size:.64rem}.published-textbook-rail-note{padding:16px}.published-textbook-rail-note strong{color:#23304a;font-size:.82rem}.published-textbook-rail-note p{color:#6c778e;margin:5px 0 0;font-size:.72rem;line-height:1.5}.published-textbook-chapter{min-width:0;max-width:900px}.published-textbook-section{border-bottom:1px solid var(--book-rule);margin:0 0 48px;padding:8px 0 42px;scroll-margin-top:102px}.published-textbook-section.kind-opening,.published-textbook-section.kind-example,.published-textbook-section.kind-context,.published-textbook-section.kind-caution,.published-textbook-section.kind-reference,.published-textbook-section.kind-recap{border:1px solid rgba(var(--book-accent-rgb), .11);border-radius:26px;padding:clamp(24px,4vw,36px);box-shadow:0 14px 42px #2834680e}.published-textbook-section.kind-opening{background:radial-gradient(circle at 100% 0%, rgba(var(--book-accent-rgb), .09), transparent 31%), linear-gradient(145deg, #fff, #f6f8ff)}.published-textbook-section.kind-example{background:radial-gradient(circle at 100% 0,#e3ac3f1a,#0000 31%),linear-gradient(145deg,#fff,#fff9eb);border-color:#d3992c2b}.published-textbook-section.kind-context{background:radial-gradient(circle at 100% 0,#407ccd17,#0000 31%),linear-gradient(145deg,#fff,#f2f7ff)}.published-textbook-section.kind-caution{background:radial-gradient(circle at 100% 0,#e3706217,#0000 31%),linear-gradient(145deg,#fff,#fff4f1);border-color:#da685b29}.published-textbook-section.kind-reference{border-color:rgba(var(--book-secondary-rgb), .17);background:radial-gradient(circle at 100% 0%, rgba(var(--book-secondary-rgb), .1), transparent 31%), linear-gradient(145deg, #fff, #f1fbf9)}.published-textbook-section.kind-recap{background:radial-gradient(circle at 100% 0,#7858d61a,#0000 31%),linear-gradient(145deg,#fff,#f6f2ff)}.published-textbook-section-heading{grid-template-columns:auto minmax(0,1fr);align-items:start;gap:18px;margin-bottom:22px;display:grid}.published-textbook-section-number{background:var(--book-deep);color:#fff;border-radius:15px;place-items:center;width:48px;height:48px;font-size:.78rem;font-weight:950;display:grid;box-shadow:0 9px 22px #18244e29}.kind-example .published-textbook-section-number{background:#9e6c16}.kind-context .published-textbook-section-number{background:#315f9a}.kind-caution .published-textbook-section-number{background:#aa564b}.kind-reference .published-textbook-section-number{background:#147f75}.kind-recap .published-textbook-section-number{background:#6650b8}.published-textbook-section-heading p{color:var(--book-accent);letter-spacing:.09em;text-transform:uppercase;margin:1px 0 5px;font-size:.65rem;font-weight:950}.published-textbook-section-heading h2{color:#172039;letter-spacing:-.046em;text-wrap:balance;margin:0;font-size:clamp(2rem,4vw,3.35rem);line-height:1}.published-textbook-copy{color:#303a4d;max-width:790px;font-family:Georgia,Times New Roman,serif;font-size:1.055rem;line-height:1.88}.published-textbook-copy p{margin:0 0 1.22em}.published-textbook-copy p:last-child{margin-bottom:0}.published-textbook-copy a,.published-textbook-term a,.published-textbook-faq a,.published-textbook-misconceptions a{color:var(--book-accent);-webkit-text-decoration-color:rgba(var(--book-accent-rgb), .3);text-decoration-color:rgba(var(--book-accent-rgb), .3);text-underline-offset:3px}.published-textbook-section.kind-opening .published-textbook-copy{font-family:inherit;font-size:1rem;line-height:1.72}.published-textbook-section.kind-opening .published-textbook-copy p:first-child{color:#26324d;font-size:1.12rem;font-weight:650}.published-textbook-terms{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0;display:grid}.published-textbook-term{border:1px solid rgba(var(--book-secondary-rgb), .13);background:#ffffffc2;border-radius:15px;min-width:0;padding:16px}.published-textbook-term dt{color:#137c72;margin-bottom:6px;font-size:.9rem;font-weight:900}.published-textbook-term dd{color:#455266;margin:0;font-size:.84rem;line-height:1.58}.published-textbook-faq{gap:8px;display:grid}.published-textbook-faq details{border:1px solid rgba(var(--book-secondary-rgb), .12);background:#ffffffc2;border-radius:14px}.published-textbook-faq summary{cursor:pointer;color:#24334b;padding:14px 16px;font-size:.88rem;font-weight:850}.published-textbook-faq details p{color:#4f5d72;margin:0;padding:0 16px 16px;font-family:Georgia,Times New Roman,serif;line-height:1.7}.published-textbook-misconceptions{gap:10px;display:grid}.published-textbook-misconceptions article{background:#ffffffbf;border:1px solid #ce5e5221;border-radius:15px;grid-template-columns:auto minmax(0,1fr);gap:12px;padding:15px 16px;display:grid}.published-textbook-misconceptions article>span{color:#ad5549;background:#fff0ed;border-radius:9px;place-items:center;width:29px;height:29px;font-weight:950;display:grid}.published-textbook-misconceptions p{color:#454d5d;margin:1px 0 0;line-height:1.63}.published-textbook-source-strip{border-top:1px solid rgba(var(--book-accent-rgb), .09);flex-wrap:wrap;align-items:center;gap:9px 14px;margin-top:22px;padding-top:15px;display:flex}.published-textbook-source-strip>span{color:#7a8499;letter-spacing:.07em;text-transform:uppercase;font-size:.64rem;font-weight:900}.published-textbook-source-strip>div{flex-wrap:wrap;gap:7px;display:flex}.published-textbook-source-strip a{border:1px solid rgba(var(--book-accent-rgb), .11);color:var(--book-accent);background:#ffffffb8;border-radius:999px;padding:5px 8px;font-size:.68rem;font-weight:780;text-decoration:none}.published-textbook-source-strip a:hover{border-color:rgba(var(--book-accent-rgb), .28);background:#fff}.published-textbook-evidence{border:1px solid rgba(var(--book-accent-rgb), .1);background:#fff9;border-radius:14px;margin-top:13px}.published-textbook-evidence>summary,.published-textbook-claim-index>summary{cursor:pointer;color:#4a5670;justify-content:space-between;gap:12px;padding:12px 14px;font-size:.76rem;font-weight:850;display:flex}.published-textbook-evidence>summary span,.published-textbook-claim-index>summary span{color:var(--book-accent);font-size:.68rem}.published-textbook-evidence-list{gap:0;padding:0 14px 14px;display:grid}.published-textbook-evidence-list article{border-top:1px solid #37427014;padding:12px 0}.published-textbook-evidence-list p{color:#4d576b;margin:0 0 7px;font-size:.82rem;line-height:1.52}.published-textbook-evidence-list p small{color:#7a8497;font-size:.7rem}.published-textbook-evidence-list article>div{flex-wrap:wrap;gap:6px;display:flex}.published-textbook-evidence-list a{color:var(--book-accent);font-size:.69rem;font-weight:760;text-decoration:none}.published-textbook-assessment{max-width:1040px;margin-left:auto;margin-right:auto}.published-textbook-references{border:1px solid var(--book-rule);background:#fff;border-radius:28px;margin:60px 0 30px;padding:clamp(25px,4vw,38px);box-shadow:0 18px 54px #2834680f}.published-textbook-reference-heading{justify-content:space-between;align-items:end;gap:26px;margin-bottom:22px;display:flex}.published-textbook-reference-heading h2{color:#17213d;letter-spacing:-.045em;margin:0;font-size:clamp(2rem,4vw,3rem);line-height:1}.published-textbook-reference-heading p:last-child{color:#69748a;max-width:680px;margin:9px 0 0}.published-textbook-reference-heading>span{background:var(--book-soft);color:var(--book-accent);border-radius:999px;flex:none;padding:7px 10px;font-size:.71rem;font-weight:850}.published-textbook-bibliography{counter-reset:none;gap:0;margin:0;padding:0;list-style:none;display:grid}.published-textbook-bibliography li{border-top:1px solid #37427017;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;padding:15px 0;display:grid}.published-textbook-bibliography li>span{color:var(--book-accent);font-size:.7rem;font-weight:950}.published-textbook-bibliography strong{color:#29334a;font-size:.85rem}.published-textbook-bibliography p{color:#7a8498;margin:3px 0 0;font-size:.72rem}.published-textbook-bibliography a{color:var(--book-accent);font-size:.72rem;font-weight:800;text-decoration:none}.published-textbook-claim-index{border:1px solid rgba(var(--book-accent-rgb), .11);background:#fafbff;border-radius:16px;margin-top:18px}.published-textbook-claim-index>div{gap:0;padding:0 15px 15px;display:grid}.published-textbook-claim-index article{border-top:1px solid #37427014;padding:12px 0}.published-textbook-claim-index p{color:#4b566b;margin:0;font-size:.82rem;line-height:1.52}.published-textbook-claim-index small{color:#808a9e;font-size:.69rem}.published-textbook-end{justify-content:center;margin-top:36px}@media (max-width:1040px){.published-textbook-layout{grid-template-columns:210px minmax(0,1fr);gap:34px}.published-textbook-overview{grid-template-columns:1fr}}@media (max-width:840px){.published-textbook-page{padding-top:18px}.published-textbook-hero{grid-template-columns:1fr;padding:34px}.published-textbook-edition{align-self:auto}.published-textbook-layout{grid-template-columns:1fr}.published-textbook-rail{display:none}.published-textbook-chapter{max-width:none}}@media (max-width:680px){.published-textbook-hero{border-radius:25px;padding:28px 22px}.published-textbook-hero h1{font-size:clamp(2.7rem,13vw,4.8rem)}.published-textbook-edition{padding:17px}.published-textbook-overview{border-radius:22px;margin:20px 0 30px;padding:20px}.published-textbook-overview>nav{grid-template-columns:1fr}.published-textbook-section{margin-bottom:34px;padding-bottom:30px}.published-textbook-section.kind-opening,.published-textbook-section.kind-example,.published-textbook-section.kind-context,.published-textbook-section.kind-caution,.published-textbook-section.kind-reference,.published-textbook-section.kind-recap{border-radius:21px;padding:21px}.published-textbook-section-heading{grid-template-columns:1fr;gap:11px}.published-textbook-section-number{border-radius:13px;width:42px;height:42px}.published-textbook-copy{font-size:1rem;line-height:1.78}.published-textbook-terms{grid-template-columns:1fr}.published-textbook-reference-heading{flex-direction:column;align-items:flex-start}.published-textbook-bibliography li{grid-template-columns:auto minmax(0,1fr)}.published-textbook-bibliography li>a{grid-column:2}}.subject-unit-card.is-planned{cursor:default;box-shadow:none;background:radial-gradient(circle at 100% 0,#6f7b990e,#0000 31%),linear-gradient(145deg,#fafbfe,#f4f6fa);border-style:dashed}.subject-unit-card.is-planned:before{opacity:.5;background:#a1a9ba}.subject-unit-card.is-planned .modern-code,.subject-unit-card.is-planned .difficulty-pill{filter:saturate(.55)}.subject-unit-card.is-planned .modern-concept-bottom>strong{color:#7a8498}