:root{--reading-size:18px;--reading-line:1.7;--reading-font:Georgia,'Times New Roman',serif}html[data-theme=sepia]{--paper:#f8edda;--ink:#45372b;--muted:#766551;--line:#d9cbb6;--accent:#795331}html[data-theme=night]{color-scheme:dark;--paper:#1e2727;--ink:#e3e8df;--muted:#a8b7ac;--line:#44524c;--accent:#a6d7bd}html[data-theme=night] body{background:#161e1d}html[data-theme=sepia] body{background:#eee2cd}html[data-font=sans]{--reading-font:system-ui,-apple-system,sans-serif}html[data-line="1.5"]{--reading-line:1.5}html[data-line="2"]{--reading-line:2}
button,input,select{font:inherit}button,.primary{cursor:pointer;min-height:44px;border:1px solid var(--line);border-radius:8px;padding:.5rem .85rem;font:600 .8rem/1.5 system-ui}button{color:var(--ink);background:var(--paper)}button:hover{border-color:var(--accent)}button:disabled{opacity:.6;cursor:wait}.primary{display:inline-block;background:var(--accent);color:var(--paper);text-decoration:none;border-color:var(--accent)}.primary:hover{color:var(--paper);filter:brightness(.9)}input,select{min-height:44px;min-width:0;border:1px solid var(--line);border-radius:7px;padding:.6rem .7rem;background:var(--paper);color:var(--ink);font:.9rem/1.4 system-ui}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #bd792d;outline-offset:3px}.portal-header{display:flex;align-items:center;justify-content:space-between;padding:.9rem 2rem;background:var(--paper);border-bottom:1px solid var(--line);font:.78rem/1.5 system-ui}.brand{font-weight:800;letter-spacing:.12em;text-decoration:none;color:var(--ink)}.brand span{font-weight:400;letter-spacing:0;margin-left:.7rem;padding-left:.7rem;border-left:1px solid var(--line)}.portal-header nav{display:flex;gap:1rem;align-items:center}.portal-header nav a{padding:.6rem 0}.portal-header form{margin:0}.text-button{border:0;padding:0;background:transparent;min-height:44px;font-weight:400;color:var(--accent)}.private-label{color:var(--muted)}.library{max-width:1050px;margin:2rem auto;padding:2.5rem;background:transparent}.library h1{font-size:2.6rem;max-width:800px}.intro{color:var(--muted);margin-bottom:2rem}.book-card{display:flex;gap:2rem;padding:2rem;border:1px solid var(--line);border-radius:12px;background:var(--paper);align-items:center}.book-card h2{margin:.6rem 0}.book-card p{font:.85rem/1.6 system-ui}.book-spine{flex:0 0 155px;min-height:230px;padding:1.5rem;background:#245b4b;color:#fff8dc;border-radius:3px 9px 9px 3px;border-left:6px solid #183e32;font:700 .9rem/1.6 system-ui;letter-spacing:.08em}.book-spine strong{display:block;white-space:nowrap;font:2.7rem/1.3 Georgia;margin:.3rem 0}.book-spine small{font-weight:400;letter-spacing:0}.secondary-link{display:inline-block;margin:.6rem;font:.85rem system-ui}.hint{font:.76rem/1.6 system-ui;color:var(--muted)}.library-footnote{margin-top:1.5rem}.account-card{margin:3rem auto;max-width:500px;padding:2rem;border:1px solid var(--line);border-radius:12px}.account-card h1{font-size:2rem}.account-card>p{font:.9rem/1.6 system-ui;color:var(--muted)}.stack{display:grid;gap:.55rem}.stack label{font:600 .8rem/1.5 system-ui;margin-top:.6rem}.stack .primary{margin-top:1rem}.notice{padding:.8rem;border:1px solid var(--line);border-radius:8px}.error{color:#9d3327;background:#fff0e8}.contents-list{list-style:none;padding:0}.contents-list li{padding:1rem 0;border-bottom:1px solid var(--line)}.contents-list span{display:block;font:.7rem/1.5 system-ui;color:var(--muted)}.reading-tools{position:sticky;top:0;z-index:3;display:flex;gap:1rem;align-items:center;padding:.45rem 1.2rem;border-bottom:1px solid var(--line);background:var(--paper);font:.75rem/1.4 system-ui}.reading-tools>a{padding:.5rem 0}.reading-tools #save-status{margin-left:auto;color:var(--muted)}.layout aside{top:65px;max-height:calc(100vh - 65px)}.within-chapter{border-top:1px solid var(--line);margin-top:1rem;padding-top:1rem}main[data-material]{font-size:var(--reading-size);line-height:var(--reading-line);font-family:var(--reading-font)}main[data-material] h2{font-size:1.35em}main[data-material] h3{font-size:1.13em}main[data-material] p{margin:.7em 0}main[data-material] .source-page{scroll-margin-top:80px}main[data-material] [id]{scroll-margin-top:80px}main[data-material] table{font-size:.85em}html[data-width=comfortable] main[data-material]{max-width:850px}html[data-width=wide] main[data-material]{max-width:1100px}html[data-width=wide] .layout{max-width:1500px}html[data-theme=night] th,html[data-theme=night] caption,html[data-theme=night] .chapter-nav a[aria-current]{background:#30423a}html[data-theme=night] mark{background:#645b22;color:#fff9dc}dialog{width:min(440px,calc(100% - 2rem));max-height:90vh;border:1px solid var(--line);border-radius:12px;padding:1.4rem;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#12251daa}.dialog-heading{display:flex;align-items:start;gap:1rem}.dialog-heading h2{font-size:1.3rem;margin:0 0 .8rem}.dialog-heading button{margin-left:auto;font-size:1.2rem}.search-form{display:flex;gap:.6rem;flex-wrap:wrap}.search-form input{flex:1 1 240px}.search-form select{max-width:270px}.search-results{list-style:none;padding:0}.search-results li{padding:1rem 0;border-bottom:1px solid var(--line)}.search-results h2{font-size:1.2rem;margin:.5rem 0}.search-results p{font:.9rem/1.7 system-ui}.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}[hidden]{display:none!important}
@media(max-width:760px){.portal-header{padding:.65rem 1rem}.portal-header nav{gap:.7rem}.library{margin:0;padding:1.7rem 1rem}.library h1{font-size:2.1rem}.book-card{padding:1.2rem;gap:1rem;align-items:start}.book-spine{flex-basis:75px;min-height:150px;padding:.65rem;font-size:.65rem}.book-spine strong{font-size:1.55rem}.book-spine small{display:none}.book-card h2{font-size:1.1rem}.book-card .eyebrow{font-size:.6rem}.account-card{margin:1.2rem 1rem;padding:1.4rem}.reading-tools{padding:.4rem .7rem;gap:.6rem;flex-wrap:wrap}.reading-tools button span{display:none}#save-status{font-size:.67rem}.layout aside{max-height:240px;position:static}.search-form select{max-width:100%;width:100%}.layout main[data-material]{padding:1.4rem 1.05rem}.chapter-heading h1{font-size:1.6rem}}
@media print{.portal-header,.reading-tools,dialog{display:none}}
.source-page > .page-reference{display:none}
html[data-size="14"]{--reading-size:14px}
html[data-size="15"]{--reading-size:15px}
html[data-size="16"]{--reading-size:16px}
html[data-size="17"]{--reading-size:17px}
html[data-size="18"]{--reading-size:18px}
html[data-size="19"]{--reading-size:19px}
html[data-size="20"]{--reading-size:20px}
html[data-size="21"]{--reading-size:21px}
html[data-size="22"]{--reading-size:22px}
html[data-size="23"]{--reading-size:23px}
html[data-size="24"]{--reading-size:24px}
html[data-size="25"]{--reading-size:25px}
html[data-size="26"]{--reading-size:26px}