/* Study Index / The open library. */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;650;700&family=Instrument+Serif:ital@0;1&display=swap');
:root{--desk:#f4f2ec;--chrome:#fdfcf8;--paper:#fdfcf8;--ink:#232b27;--muted:#70796e;--line:#e0e4da;--accent:#326a45;--navy:#274b35;--selected:#e6eddf;--sans:'DM Sans',Arial,sans-serif;--serif:'Instrument Serif',Georgia,serif}
body{background:var(--desk);background-image:none;padding:0;font-size:14px;line-height:1.55;color:var(--ink)}body.paper-theme{--desk:#151c18;--chrome:#1d2620;--paper:#1d2620;--ink:#e8eddf;--muted:#a5b09d;--line:#394539;--accent:#bcdaa4;--navy:#274b35;--selected:#303e31}
.desktop-label,.desktop-footer{display:none}.window{max-width:none;margin:0;border:0;padding:0;background:var(--paper);box-shadow:none}.titlebar{height:79px;background:var(--paper);color:var(--ink);padding:0 38px;border-bottom:1px solid var(--line)}.titlebar a{color:var(--ink);gap:12px}.titlebar strong{font-size:24px;letter-spacing:-1px}.titlebar a img{width:29px;height:29px}.titlebar-sub{font-size:12px;color:var(--muted);margin-left:10px;opacity:1}.titlebar-right{color:var(--muted);letter-spacing:1.3px;font:10px var(--sans)}.online-dot{border-radius:50%;width:7px;height:7px;background:#779964}
.menubar{padding:10px 38px;border:0;background:var(--paper);gap:10px;min-height:50px}.menu-left{gap:24px}.menu-left button{font-size:12px;color:var(--muted)}.menu-left #finder-button{font-weight:650;color:var(--accent)}.support-button{font-size:12px;font-weight:500;color:var(--ink)}.tabs{padding:0 38px;gap:32px;background:var(--paper);overflow-y:hidden;border-bottom:1px solid var(--line)}.tab,.tab[aria-current="page"]{background:none;border:0;box-shadow:none;border-radius:0;min-height:49px;padding:12px 0;margin:0;font-size:13px;color:var(--muted);gap:8px}.tab[aria-current="page"]{border-bottom:3px solid var(--accent);color:var(--ink);font-weight:650}.tab:hover{color:var(--accent)}
.workspace{grid-template-columns:220px minmax(0,1fr);min-height:850px;border:0;max-width:1700px;margin:auto}.sidebar{background:var(--paper);border-right:1px solid var(--line);padding:30px 20px}.network-brand{padding:0 10px 27px;margin-bottom:25px;border-bottom:1px solid var(--line)}.network-brand>span{display:block;font:54px/.8 var(--serif);color:var(--accent);margin-bottom:15px}.network-brand strong{font-size:18px;line-height:1.3;font-weight:500;letter-spacing:-.5px;display:block}.network-brand small{display:block;color:var(--muted);font-size:10px;margin-top:12px}.sidebar-heading,.sidebar-label{font:9px var(--sans);font-weight:650;letter-spacing:1.3px;color:var(--muted);margin-left:10px}.sidebar-label{margin-top:25px}.tree-button{border-radius:7px;font-size:11px;padding:9px 10px;gap:8px;color:var(--muted)}.tree-button:hover,.tree-button.active{background:var(--selected);color:var(--ink);border-color:transparent}.nav-count{color:var(--muted);font:10px var(--sans)}.mini-icon{font-size:14px;color:var(--accent)!important}.tree-branch{font-size:10px;color:#b0b8a7}.sidebar-shelf{background:var(--selected);border:0;border-radius:12px;padding:16px;margin:26px 0 0}.sidebar-shelf p{color:var(--muted)}.sidebar-shelf .retro-button{background:var(--paper);border-color:var(--line)}
main{padding:25px 44px 0;max-width:1400px}.breadcrumb{color:var(--muted);font:10px var(--sans);letter-spacing:.3px}.page-heading{margin:27px 0 30px;gap:28px;min-height:185px}.eyebrow{font:9px var(--sans);font-weight:650;letter-spacing:1.8px;color:var(--accent);margin-bottom:13px}h1{font-family:var(--serif);font-size:59px;font-weight:400;letter-spacing:-1.5px;line-height:1.01}h1 em{font-weight:400;color:var(--accent)}#page-description{color:var(--muted);font-size:12px;line-height:1.7;margin-top:15px}.index-illustration{display:none!important}.hero-network{position:relative;width:210px;height:180px;flex-shrink:0;margin:0 25px 0 0}.orbit{position:absolute;border:1px solid #b2c4a5;border-radius:50%;width:160px;height:100px;left:25px;top:38px;transform:rotate(-27deg)}.orbit-two{transform:rotate(40deg);border-style:dashed}.orbit-center{position:absolute;left:80px;top:52px;font-size:63px;line-height:1;color:#5f8247}.orbit-label{position:absolute;font-size:8px;letter-spacing:1px;background:var(--paper);padding:5px 9px;border:1px solid var(--line);border-radius:20px}.label-one{left:14px;top:12px;transform:rotate(-8deg);background:#e7ecd9;color:#47653c}.label-two{right:-4px;top:87px;transform:rotate(8deg);background:#eee4d3;color:#816b45}.label-three{bottom:3px;left:23px;font-size:7px}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.section-heading h2{font-size:19px;font-weight:500;letter-spacing:-.6px;margin:0;line-height:1.2}.section-heading .eyebrow{font-size:8px;display:block;margin-bottom:8px;letter-spacing:1.5px}.network-panel{border:1px solid var(--line);background:var(--paper);padding:22px;border-radius:14px;margin:0 0 30px}.network-panel #network-count{font-size:10px;white-space:nowrap;color:var(--muted)}.region-shortcuts{display:flex;gap:7px;flex-wrap:wrap;margin:0 0 18px}.region-shortcuts button{font-size:11px;border:1px solid var(--line);border-radius:25px;padding:7px 13px;background:var(--desk)}.region-shortcuts button[aria-pressed=true]{background:var(--accent);color:var(--paper);border-color:var(--accent)}.region-shortcuts button:first-child{border-color:#b3c0a3}.region-shortcuts button span{margin-left:10px}.network-selects{display:grid;grid-template-columns:1fr 1.2fr 1fr 1fr;gap:10px}.network-selects label{font-size:9px;color:var(--muted);font-weight:500;display:block}.network-selects select{display:block;width:100%;max-width:100%;margin-top:6px;font-size:11px;padding:9px;background:var(--desk);border:1px solid var(--line);border-radius:6px;color:var(--ink)}.network-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:13px}.network-foot p{color:var(--muted);font-size:10px;line-height:1.5;margin:0;max-width:650px}.network-foot button{font-size:10px;white-space:nowrap;color:var(--accent);text-decoration:underline;text-underline-offset:3px}
#editor-picks{margin:0 0 32px}.gold-star{color:#ad812a;font-size:21px;margin-left:8px}.editor-label{font-size:9px;color:var(--muted)}.picks-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.pick-card{background:linear-gradient(135deg,#fcf6df,#f5e6b6);border:1px solid #dfc77f;border-radius:12px;padding:18px;position:relative;color:#483d26;display:flex;flex-direction:column}.pick-kicker{font-size:8px;color:#8b6929;font-weight:650;letter-spacing:1.3px;margin-bottom:15px}.pick-card>a{display:flex;justify-content:space-between;gap:8px;font-size:17px;font-weight:600;letter-spacing:-.5px;color:#483d26;text-decoration:none}.pick-card>a:hover{text-decoration:underline}.pick-card>a span{font-size:16px;color:#a18443}.pick-card>p{color:#786746;font-size:11px;line-height:1.65;margin:10px 0 17px;flex:1}.pick-bottom{display:flex;justify-content:space-between;gap:8px;align-items:center;padding-top:10px;border-top:1px solid #d8bd7560;font-size:9px;color:#8c7038}.pick-bottom button{font-size:10px;color:#6a512a;padding:4px 5px}.pick-bottom button[aria-pressed=true]{color:#805800;font-weight:700}
.searchbox{background:var(--paper);border:1px solid #b9c5b2;border-radius:9px;box-shadow:0 3px 14px #172a0f04;height:53px;gap:12px;padding:0 15px}.search-icon{font-size:27px;color:var(--accent)}.searchbox input{color:var(--ink);font-size:13px}.searchbox input::placeholder{color:var(--muted)}.searchbox kbd{background:var(--desk);border-color:var(--line);border-radius:4px;color:var(--muted)}.filter-row{gap:9px;color:var(--muted);margin-top:12px}.filter-row select,select{background:var(--desk);border:1px solid var(--line);border-radius:5px;color:var(--ink);font-size:10px}.filter-row label{color:var(--muted)}.active-filters{color:var(--accent);font-size:11px}.results-toolbar{margin:24px 0 13px}.result-count{font-size:12px;font-weight:400}.result-count strong{font-weight:650}.view-controls{font-size:10px;color:var(--muted)}.density-button{background:var(--paper);border-color:var(--line);border-radius:5px;font:10px var(--sans);padding:6px 8px}.density-button[aria-pressed=true]{background:var(--selected)}.list-head{background:var(--desk);border:0;border-radius:6px;color:var(--muted);font:8px var(--sans);font-weight:600;letter-spacing:1.2px;padding:11px 12px}.resource-list{border-top:0}.resource-row{border-bottom:1px solid var(--line);padding:18px 12px;gap:12px;grid-template-columns:minmax(0,1fr) 94px 75px}.resource-row:hover{background:var(--desk)}.resource-avatar{background:var(--selected);border:0;border-radius:9px;box-shadow:none;width:35px;height:36px;flex-basis:35px;color:var(--accent);font:500 11px var(--sans)}.resource-name{color:var(--ink);font-size:13px;font-weight:600}.resource-name .external{color:var(--muted)}.resource-description{font-size:11px;color:var(--muted);margin:5px 0 8px;line-height:1.6}.resource-tags{font:9px var(--sans);color:var(--muted);flex-wrap:wrap}.access-badge{font:9px var(--sans);border-radius:20px;padding:4px 8px;border:0;background:var(--selected);color:var(--accent)}.access-badge.mixed{background:#f5eedc;color:#85703c}.access-badge.library{background:#ece9f1;color:#77628a}.access-badge.paid{background:#f4e5df;color:#966552}.save-button{color:var(--muted);font-size:22px}.save-button[aria-pressed=true]{color:#ad812a}.info-button{border:0;background:var(--desk);width:26px;height:26px;color:var(--muted)}.retro-button{border-radius:7px;box-shadow:none;background:var(--paper);border:1px solid var(--line);padding:9px 13px;font-size:11px;color:var(--ink)}.retro-button:active{box-shadow:none;background:var(--selected)}.primary-button{background:var(--accent);color:var(--paper)}.load-more{background:var(--desk);min-height:43px}.list-end{font:10px var(--sans);color:var(--muted)}.ad-space{border-color:var(--line);border-radius:8px;background:var(--desk);font:9px var(--sans);color:var(--muted)}.ad-space span:first-child{border-color:var(--line);font-size:8px}.content-footer{color:var(--muted);padding:25px 0 30px}.content-footer button{color:var(--muted)}.statusbar{background:var(--desk);border:0;border-top:1px solid var(--line);margin:0;padding:12px 38px;color:var(--muted);font:10px var(--sans)}
.folder-grid{gap:12px}.folder-tile{background:var(--desk);border:1px solid var(--line);border-radius:12px;box-shadow:none;padding:22px;min-height:140px}.folder-tile:hover{background:var(--selected);border-color:#a6b895}.folder-tile strong{font-size:14px;font-weight:500}.folder-tile small{font:10px var(--sans);color:var(--muted);margin-top:6px}.folder-icon{background:#d6e1c5;border-color:#9aaf84;border-radius:4px;color:transparent}.folder-icon:before{background:#d6e1c5;border-color:#9aaf84;border-radius:4px 4px 0 0}.empty-state{border-color:var(--line);border-radius:14px;background:var(--desk)}.empty-state p,.section-intro{color:var(--muted)}.storage-note{border:1px solid var(--line);border-radius:8px;background:var(--selected);color:var(--ink);font-size:11px;padding:15px}
dialog{border:1px solid var(--line);border-radius:17px;padding:0;background:var(--paper);box-shadow:0 20px 100px #09150b40;width:min(580px,calc(100vw - 28px));max-height:90vh}dialog::backdrop{background:#18261e66;backdrop-filter:blur(5px)}.dialog-titlebar{background:var(--desk);color:var(--ink);padding:15px 22px;border-bottom:1px solid var(--line);font-size:12px}.dialog-titlebar button{border:0;box-shadow:none;background:var(--selected);color:var(--ink);border-radius:50%;height:26px;width:26px;font-size:18px}.finder-body,#modal-content{background:var(--paper);padding:26px;color:var(--ink)}.finder-body h2,#modal-content h2{font-family:var(--serif);font-size:34px;font-weight:400;line-height:1.1;letter-spacing:-.5px}.finder-body p,#modal-content p{color:var(--muted)}.finder-body .primary-button,#modal-content .primary-button{background:var(--accent);color:var(--paper);border:0;border-radius:7px}.form-label{color:var(--ink);font-size:12px;margin-top:17px}.dialog-input{background:var(--desk);border:1px solid var(--line);border-radius:7px;padding:11px;color:var(--ink)}#modal-content .detail-meta,.spec-note{background:var(--desk);border:1px solid var(--line);border-radius:8px;color:var(--ink)}.detail-meta dt{font:9px var(--sans);color:var(--muted)}.detail-meta dd{font-size:11px}.detail-url{font:12px var(--sans);color:var(--accent)}.finder-result{border-color:var(--line)}.finder-result>a{color:var(--accent)}.finder-body .finder-reason{color:var(--muted)}#toast{background:var(--ink);color:var(--paper);border:0;box-shadow:0 4px 30px #0002;border-radius:9px;font-size:12px}.small-note{color:var(--muted)}
@media(min-width:1500px){.workspace{grid-template-columns:240px minmax(0,1fr)}main{padding:30px 65px 0}.page-heading{min-height:210px}.sidebar{padding:36px 26px}.hero-network{margin-right:55px}h1{font-size:67px}}
@media(max-width:1100px){main{padding:25px 26px 0}.workspace{grid-template-columns:185px minmax(0,1fr)}.sidebar{padding:28px 12px}.titlebar,.menubar{padding-left:26px;padding-right:26px}.tabs{padding-left:26px;padding-right:26px}.hero-network{width:175px;margin-right:0;transform:scale(.85)}h1{font-size:50px}.network-selects{grid-template-columns:repeat(2,minmax(0,1fr))}.pick-card{padding:14px}.pick-card>a{font-size:15px}}
@media(max-width:760px){body{padding:0}.titlebar{height:66px;padding:0 20px}.titlebar strong{font-size:22px}.titlebar-sub,.titlebar-right{display:none}.menubar{padding:9px 20px;gap:9px}.menu-left{gap:12px}.menu-left button{font-size:10px}.tabs{padding:0 20px;gap:25px}.tab,.tab[aria-current=page]{font-size:12px;min-height:46px;padding:10px 0}.workspace{display:block}.sidebar{display:none}main{padding:22px 20px 0}.page-heading{min-height:0;margin:27px 0 29px}h1{font-size:48px}.hero-network{display:none}#page-description{font-size:12px}.network-panel{padding:18px;margin-bottom:26px;border-radius:12px}.section-heading{align-items:flex-start}.section-heading h2{font-size:18px}.network-panel #network-count{font-size:9px;max-width:75px;white-space:normal;text-align:right}.region-shortcuts{gap:6px}.region-shortcuts button{font-size:10px;padding:6px 10px}.network-selects{gap:10px}.network-selects select{font-size:10px}.network-foot{align-items:flex-start}.network-foot p{font-size:9px}.picks-grid{grid-template-columns:1fr}.pick-card{padding:18px}.pick-kicker{margin-bottom:9px}.pick-card>a{font-size:18px}.pick-card>p{margin:7px 0 10px}.editor-label{max-width:115px;text-align:right;font-size:9px}.resource-row,.list-head{grid-template-columns:minmax(0,1fr) 63px;gap:8px}.resource-row>.access-badge{grid-column:1;margin-left:46px;margin-top:0}.resource-row .row-actions{grid-column:2;grid-row:1 / span 2}.resource-name{font-size:12px}.resource-description{font-size:11px}.resource-tags{font-size:9px}.resource-row{padding:16px 3px}.resource-avatar{width:34px;flex-basis:34px;height:35px}.statusbar{padding:12px 20px;font-size:9px}.content-footer{font-size:9px}.network-brand{display:none}}
@media(max-width:390px){h1{font-size:42px}.menu-left{column-gap:10px}.network-panel{padding:15px}.network-selects{grid-template-columns:1fr}.tabs{gap:20px}.tab,.tab[aria-current=page]{font-size:11px}.section-heading h2{font-size:17px}}

.resource-tags span+span:before{content:none}

@media(max-width:390px){.tabs{gap:0;justify-content:space-between;padding-left:16px;padding-right:16px}.tab,.tab[aria-current=page]{font-size:10px}.tab span{display:none}}
/* Clear entrances for students who would otherwise only use search. */
.menu-left{align-items:center;flex-wrap:wrap}
.start-signpost{background:#f8edc9;border:1px solid #d9bc65;border-radius:12px;padding:10px 12px;color:#51431e}
.start-marker{margin:0 0 7px;font-size:11px;font-weight:700;letter-spacing:.1px}
.start-marker>span{display:inline-block;font-size:16px;margin-right:6px}
.start-actions{display:flex;gap:8px;flex-wrap:wrap}
.menu-left .start-actions button{display:flex;flex-direction:column;align-items:flex-start;gap:3px;padding:9px 12px;border:1px solid #d9bc65;border-radius:8px;background:#fffaf0;color:#42391f;min-height:56px;text-align:left}
.menu-left .start-actions button strong{font-size:12px;font-weight:700}
.menu-left .start-actions button span{font-size:10px;color:#685a32}
.menu-left .start-actions #finder-button{color:#42391f}
.menu-left .start-actions button:hover{background:#fff3cb;border-color:#927426}
.menu-left .start-actions button:focus-visible,.search-signpost button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.search-signpost{font-size:12px;color:var(--muted);margin:10px 0 14px;line-height:1.6}
.search-signpost button{font:inherit;color:var(--accent);text-decoration:underline;text-underline-offset:3px;font-weight:650;padding:0;background:none;border:0}
body.paper-theme .start-signpost{background:#3c3421;border-color:#8c7740;color:#f5dfa0}
body.paper-theme .menu-left .start-actions button{background:#29291e;border-color:#8c7740;color:#f5dfa0}
body.paper-theme .menu-left .start-actions button span{color:#d6c898}
body.paper-theme .menu-left .start-actions button:hover{background:#484029}
@media(max-width:760px){.start-signpost{width:100%;margin-top:2px}.start-actions{display:grid;grid-template-columns:1fr 1fr}.menu-left .start-actions button{padding:8px;min-width:0}.menu-left .start-actions button strong{font-size:11px}.menu-left .start-actions button span{font-size:10px}.start-marker{font-size:11px}.search-signpost{font-size:11px}}
.board-search-pages{margin:24px 0;padding:22px;border:1px solid var(--accent);border-radius:12px;background:var(--selected)}
.board-search-pages h2{font-size:19px;margin:5px 0 8px}.board-search-pages p{font-size:12px;color:var(--muted);margin:0 0 14px}.board-search-pages>div{display:flex;gap:8px;flex-wrap:wrap}.board-search-pages a{display:flex;align-items:center;justify-content:space-between;gap:16px;background:var(--paper);color:var(--accent);border:1px solid var(--line);border-radius:7px;padding:10px 12px;font-size:12px;text-decoration:none}.board-search-pages a:hover{text-decoration:underline}.board-search-pages a:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:760px){.board-search-pages{padding:16px}.board-search-pages a{width:100%;font-size:11px}}
.header-extras{display:flex;align-items:center;gap:20px}.titlebar #watch-tour{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:10px;padding:8px 12px;background:var(--selected);color:var(--ink);font:600 12px var(--sans);text-align:left;white-space:nowrap}.titlebar #watch-tour small{display:block;font-size:10px;font-weight:400;color:var(--muted);margin-top:2px}.tour-play-icon{display:grid;place-items:center;border-radius:50%;background:var(--accent);color:var(--paper);width:28px;height:28px;font-size:11px}.titlebar #watch-tour:hover{border-color:var(--accent)}#watch-tour:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
dialog#tour-modal{box-sizing:border-box;position:fixed;inset:0;width:100vw;height:100vh;height:100dvh;max-width:none;max-height:none;margin:0;padding:24px;background:#151c18;color:#edf1e6;border:0;border-radius:0;overflow:auto;font-family:var(--sans)}#tour-modal::backdrop{background:#151c18}#tour-modal .tour-heading{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:20px}#tour-title{font:600 24px var(--sans);margin:0;color:#edf1e6}#tour-description{color:#b8c5af;font-size:12px;margin:5px 0 0}#tour-modal button{border:1px solid #64735d;border-radius:7px;background:#253326;color:#edf1e6;padding:10px 13px;font:500 12px var(--sans);cursor:pointer}#tour-modal button:hover{background:#3b513b}#tour-modal button:focus-visible,#tour-modal a:focus-visible{outline:3px solid #f1d686;outline-offset:3px}.tour-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px}.tour-main{min-width:0}#feature-video{display:block;width:100%;max-height:calc(100dvh - 195px);aspect-ratio:16/9;background:#000;border-radius:9px}.tour-controls{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:14px}.tour-controls a{color:#d4e8bf;font-size:12px}#tour-modal #tour-status{font-size:12px;color:#ead9a0;min-height:18px}.tour-chapters{max-height:calc(100dvh - 125px);overflow-y:auto}.tour-chapters h3{margin:0 0 12px;font-size:14px;color:#edf1e6}#tour-modal .tour-chapters button{display:flex;width:100%;gap:12px;text-align:left;margin-bottom:6px;background:transparent;border-color:transparent;align-items:baseline}.tour-chapters time{color:#dfc16b;font-variant-numeric:tabular-nums;flex:0 0 34px}#tour-modal .tour-chapters button[aria-current=true]{background:#344a32;border-color:#8caa76}
@media(max-width:760px){.header-extras{gap:0}.titlebar{padding-left:16px;padding-right:16px}.titlebar a{gap:7px}.titlebar strong{font-size:19px}.titlebar #watch-tour{font-size:10px;padding:6px 8px;gap:6px}.titlebar #watch-tour small{font-size:9px}.tour-play-icon{width:23px;height:23px}dialog#tour-modal{padding:15px}.tour-layout{grid-template-columns:1fr;gap:12px}.tour-chapters{max-height:40dvh}#feature-video{max-height:55dvh}#tour-title{font-size:17px}#tour-description{font-size:10px}#tour-modal .tour-heading{align-items:flex-start;margin-bottom:14px}}