.library-board{max-width:1440px;margin:auto;background:#fffdfb;border-inline:7px solid #805080;min-height:85vh;box-shadow:0 16px 60px #180e3038;padding:32px 38px 48px}
.library-masthead{display:flex;justify-content:space-between;align-items:end;gap:24px;padding-bottom:24px;border-bottom:4px double #a82e3d}.library-masthead .eyebrow{margin-bottom:12px;color:#8d2c48}.library-masthead h1{font-size:clamp(30px,4.5vw,58px);letter-spacing:-.05em;line-height:1.13}.library-masthead p{max-width:650px;margin:14px 0 0}.library-stamp{min-width:154px;padding:14px;border:3px double #805080;color:#613866;line-height:1.6;font-size:14px;text-align:center}.library-stamp strong{font-size:24px;display:block}.library-links{display:flex;flex-wrap:wrap;gap:10px 24px;padding:16px 0;font-size:14px;border-bottom:1px solid #d7c7d5}.library-links a{text-decoration:underline;text-decoration-color:#a98eac}.library-links a:hover{color:#a82e3d}
.catalog-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:28px;margin-top:26px;align-items:start}.catalog-rail{border:1px solid #a181a7;background:#fbf7fc;position:sticky;top:118px}.catalog-rail summary{padding:16px;background:#4e285c;color:#fff;font-weight:bold;cursor:pointer;min-height:52px}.catalog-rail summary::marker{color:#f6bb6b}.catalog-rail nav{padding:6px 0}.catalog-rail a{display:flex;justify-content:space-between;gap:12px;padding:10px 15px;font-size:14px;line-height:1.5;border-left:3px solid transparent}.catalog-rail a span:last-child{color:#715b76;min-width:30px;text-align:right}.catalog-rail a:hover{background:#f0e3f1}.catalog-rail a[aria-current]{background:#e8d9ee;border-left-color:#a82e3d;font-weight:bold;color:#542858}.catalog-rail .rail-source{border-top:1px solid #d7c7d5;margin-top:5px;padding-top:13px}.catalog-rail-note{padding:14px 17px;margin:0;border-top:1px solid #d7c7d5;font-size:13px;color:#715b76;line-height:1.5}
.catalog-workspace{min-width:0}.catalog-controls{padding:20px;background:#f4edf5;border:1px solid #ccb8cf;border-top:3px solid #895a91;display:grid;grid-template-columns:1fr 1fr;gap:14px}.catalog-controls label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:bold}.catalog-controls .catalog-search{grid-column:1/-1}.catalog-controls input,.catalog-controls select{width:100%;min-width:0;border:1px solid #a890ad;border-radius:0;background:#fff;padding:10px 11px;min-height:46px;color:#173d5c;font-size:16px}.catalog-controls input{padding:13px;font-size:18px}.catalog-context{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:20px 0 13px;border-bottom:1px solid #9d7ea3}.catalog-context h2{font-size:24px;letter-spacing:-.03em;line-height:1.3}.catalog-context p{font-size:14px;margin:5px 0 0;color:#6a526f}.catalog-reset{background:none;color:#81384b;font-size:14px;text-decoration:underline;padding:10px 0;white-space:nowrap}.catalog-description{font-size:14px;color:#6a526f;padding:10px 0;margin:0}
.catalog-row{display:grid;grid-template-columns:50px minmax(0,1fr) auto;gap:16px;align-items:start;padding:20px 0;border-bottom:1px solid #d7c7d5}.catalog-format{font-size:12px;font-weight:bold;letter-spacing:.03em;border:1px solid #cbb5c8;border-top:4px solid #a66c39;min-height:48px;display:flex;justify-content:center;align-items:center;background:#fbf0df;color:#65344c;overflow-wrap:anywhere;padding:4px}.catalog-row h3{font-size:18px;letter-spacing:-.025em;line-height:1.5;overflow-wrap:anywhere}.catalog-row h3 a:hover{color:#a82e3d;text-decoration:underline}.catalog-meta,.catalog-path{display:block;font-size:13px;color:#6b566d;line-height:1.6;margin-top:5px;overflow-wrap:anywhere}.catalog-path{font-size:12px;color:#786a7b}.catalog-actions{display:flex;flex-direction:column;gap:8px;align-items:stretch;min-width:116px}.catalog-actions a{padding:9px 12px;border:1px solid #926498;color:#5e376a;background:#fff;text-align:center;font-size:14px;font-weight:bold;line-height:1.5;min-height:42px}.catalog-actions a:first-child{background:#f2e8f5}.catalog-actions a:hover{background:#ead9ed;color:#4e285c}.catalog-row[data-origin=course] .catalog-format{border-top-color:#174c77}.catalog-row[data-origin=web] .catalog-format{border-top-color:#a82e3d;font-size:11px}.catalog-empty{border:1px dashed #a890ad;padding:32px;margin:20px 0}.catalog-empty h3{font-size:23px;margin-bottom:12px}.catalog-empty p{margin:0}.catalog-more{display:block;width:100%;margin-top:20px;border:1px solid #926498;background:#f4edf5;color:#573561;padding:14px;font-size:16px;min-height:50px}.catalog-more:hover{background:#ead9ed}.catalog-endnote{font-size:13px;line-height:1.65;color:#715b76;margin:26px 0 0;border-top:3px double #d7c7d5;padding-top:18px}.catalog-endnote a{text-decoration:underline}
.library-dialog{width:min(1120px,96vw);max-width:none;height:92dvh;max-height:94dvh;padding:0;border:2px solid #805080;background:#fffdfb;color:#173d5c}.library-dialog::backdrop{background:#1b102bc9}.library-dialog[open]{display:flex;flex-direction:column}.reader-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 22px;background:#4e285c;color:#fff}.reader-toolbar h2{font-size:18px;letter-spacing:0;line-height:1.4;overflow-wrap:anywhere}.reader-toolbar button{padding:10px 14px;flex-shrink:0;background:#fff;color:#4e285c;border:1px solid #fff;font-size:14px;min-height:44px}.reader-fallback{padding:12px 22px;background:#f4edf5;font-size:14px;margin:0}.reader-fallback a{text-decoration:underline;font-weight:bold}.library-dialog iframe{width:100%;flex:1;min-height:0;border:0;background:#e8e4eb}.reader-open{overflow:hidden}
.supplement-strip{margin:36px 0 14px;border-top:4px double #a82e3d;padding-top:24px}.supplement-strip .eyebrow{margin-bottom:12px}.supplement-strip h2{font-size:29px;line-height:1.3}.supplement-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}.supplement-cards a{padding:22px;border:1px solid #b594b7;border-top:4px solid #a82e3d;background:linear-gradient(125deg,#f5eafa,#fff6e6)}.supplement-cards a:hover{background:#f4e3e7}.supplement-cards small{display:block;font-size:13px;color:#805080;margin-bottom:10px}.supplement-cards h3{font-size:22px;line-height:1.4;letter-spacing:-.02em}.supplement-cards p{font-size:14px;margin:12px 0 0}.supplement-page{max-width:1040px;margin:auto;background:#fffdfb;border-inline:7px solid #805080;padding:38px}.supplement-page .eyebrow{color:#a82e3d;margin:22px 0 14px}.supplement-page h1{font-size:clamp(28px,4vw,48px);line-height:1.2}.supplement-page blockquote{margin:32px 0;padding:26px;border-block:3px double #a82e3d;background:#f6edf7;font-size:22px;line-height:1.8;overflow-wrap:anywhere}.supplement-page blockquote p{margin:0}.supplement-page .formula{display:block;font-size:clamp(28px,7vw,64px);letter-spacing:.04em;color:#88314e;font-weight:bold;margin-bottom:20px}.supplement-caption{font-size:14px;color:#705974}.supplement-nav{display:flex;gap:15px;justify-content:space-between;flex-wrap:wrap;border-top:1px solid #cdb8cc;padding-top:24px;margin-top:26px}.supplement-nav a{text-decoration:underline}.lesson-rail .supplement-rail{border-top:1px solid #b594b7;padding-top:8px;margin-top:8px}.supplement-rail a{font-size:14px}
.catalog-rail{max-height:calc(100dvh - 138px);overflow-y:auto}.catalog-heading{scroll-margin-top:150px}
[hidden]{display:none!important}
@media(max-width:1050px){.library-board{padding:26px 24px}.catalog-layout{grid-template-columns:220px minmax(0,1fr);gap:20px}.catalog-controls{padding:16px;grid-template-columns:1fr 1fr}.catalog-row{grid-template-columns:44px minmax(0,1fr);gap:12px}.catalog-actions{grid-column:2;flex-direction:row;flex-wrap:wrap}.catalog-stamp{display:none}.catalog-rail{top:128px}}
@media(max-width:760px){.library-board{border-width:4px;padding:24px 16px}.library-masthead{display:block}.library-stamp{display:none}.library-masthead h1{font-size:36px}.library-masthead p{font-size:16px}.catalog-layout{display:block;margin-top:18px}.catalog-rail{position:static;margin-bottom:20px}.catalog-rail nav{display:grid;grid-template-columns:1fr 1fr}.catalog-rail a{font-size:14px;padding:9px 12px}.catalog-rail .rail-source{border-top:0;padding-top:9px;margin:0}.catalog-context{align-items:start}.catalog-context h2{font-size:22px}.catalog-reset{white-space:normal;text-align:right}.catalog-row{padding:18px 0}.catalog-controls input{font-size:16px}.catalog-controls select{font-size:15px}.supplement-cards{grid-template-columns:1fr}.supplement-page{padding:24px 20px;border-width:4px}.supplement-page blockquote{font-size:18px;padding:20px 15px}.reader-toolbar{padding:12px;gap:10px}.reader-fallback{padding:10px 12px}.reader-toolbar h2{font-size:16px}.reader-toolbar button{font-size:13px;padding:9px}.library-dialog{height:94dvh;width:98vw}.catalog-endnote{margin-bottom:8px}}
@media(max-width:380px){.library-board{padding-inline:12px}.catalog-rail nav{grid-template-columns:1fr}.catalog-controls{grid-template-columns:1fr}.catalog-controls label{grid-column:1!important}.catalog-row{grid-template-columns:38px minmax(0,1fr);gap:9px}.catalog-actions{gap:6px}.catalog-actions a{font-size:13px}.library-masthead h1{font-size:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.catalog-rail,.catalog-controls,.catalog-reset,.catalog-actions,.catalog-more,.library-links,.library-dialog{display:none!important}.catalog-layout{display:block}.library-board,.supplement-page{border:0;padding:0}.catalog-row{break-inside:avoid}}
@media(max-width:760px){.catalog-rail{max-height:none;overflow:visible}}