@charset "UTF-8";
:root{--navy:#182b4a;--blue:#2563eb;--sky:#eaf2ff;--yellow:#f8d769;--ink:#20324e;--muted:#738095;--line:#e5eaf1;--bg:#f5f7fb;--green:#29765d;--radius:16px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"Segoe UI",system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.6}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}a{color:var(--blue);text-decoration:none}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a,button,input,textarea,select{transition:background .15s,border-color .15s,box-shadow .15s}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #5c9df2;outline-offset:4px}input,textarea,select{border:1px solid #dce3ed;border-radius:9px;background:#fff;color:var(--ink);padding:11px 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small{display:block;font-size:10px;letter-spacing:.25px;font-weight:400;color:#adbcd1;margin-top:5px}.logo{display:grid;place-items:center;width:39px;height:42px;border-radius:12px;background:#3575ef;font-size:30px;font-weight:800;position:relative;flex-shrink:0}.logo>span{position:absolute;right:-3px;top:-7px;color:var(--yellow);font-size:23px}.nav-label{padding:0 16px;font-size:10px;letter-spacing:1.8px;color:#9fb0c9;margin-bottom:12px}.sidebar nav{display:grid;gap:8px}.nav-link{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:9px;color:#b8c7dd;font-size:12px;font-weight:550;white-space:nowrap}.nav-link>span:first-child{font-size:22px;width:23px;line-height:1}.nav-link:hover{background:#233b60;color:#fff}.nav-link.active{background:#2f6ee8;color:#fff;box-shadow:0 5px 12px #071b3c33}.nav-new{margin-left:auto;color:#153671;background:#bcd6ff;border-radius:4px;font-size:9px;padding:0 5px}.sidebar-tip{margin:auto 7px 26px;padding:20px 17px 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small{display:block;color:#a7b8ce;font-size:10px}.sidebar-user>span:last-child{margin-left:auto;color:#a7b8ce}.avatar{background:#f7dc93;color:#745e2c;border-radius:11px;width:37px;height:37px;display:grid;place-items:center;font-size:14px;font-weight:750;flex-shrink:0}.avatar.small{width:33px;height:33px;font-size:12px;border-radius:50%;margin-left:10px}.workspace{min-width:0;display:flex;flex-direction:column}.topbar{height:77px;border-bottom:1px solid var(--line);background:#fff;display:flex;justify-content:space-between;align-items:center;padding:0 39px;gap:18px}.breadcrumb{font-size:11px;color:var(--muted)}.breadcrumb span{padding:0 10px;color:#c6cedb}.breadcrumb strong{color:#455771;font-weight:550}.top-actions{display:flex;align-items:center;gap:8px;font-size:10px;color:var(--muted)}.live-dot{display:inline-block;width:6px;height:6px;background:#43a385;border-radius:50%}.content{padding:35px 39px 40px;width:100%;max-width:1510px;margin:0 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var(--line)}.library-toolbar .tabs{border-bottom:0;margin-bottom:0}.tab{display:block;white-space:nowrap;font-size:12px;padding:10px 4px 14px;color:#8190a3;font-weight:550;border-bottom:2px solid transparent}.tab.active,.tab:hover{color:var(--blue);border-bottom-color:var(--blue)}.tab span{display:inline-block;margin-left:7px;padding:1px 6px;background:#e6efff;color:#3264b8;font-size:9px;border-radius:4px}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:19px}.section-heading h2{font-size:17px;margin-bottom:4px}.section-heading p{font-size:11px}.search-form{display:flex;gap:7px;align-items:center}.search-form input{width:210px;font-size:10px;padding:10px 12px;background:#fff}.search-form select{font-size:10px;padding:10px;width:125px}.search-form .btn{padding:10px;font-size:10px;min-height:37px}.book-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:21px}.book-card{min-width:0;border:1px solid var(--line);border-radius:13px;background:#fff;overflow:hidden;transition:transform .18s,box-shadow .18s}.book-card:hover{transform:translateY(-3px);box-shadow:0 10px 25px #20324e0b}.cover{height:203px;display:flex;flex-direction:column;position:relative;isolation:isolate;overflow:hidden;color:#fff;padding:18px 21px}.cover:before{content:"";position:absolute;width:170px;height:170px;right:-55px;top:-25px;border:1px solid #ffffff25;border-radius:50%;z-index:-1}.cover:after{content:"";position:absolute;width:200px;height:200px;left:-60px;bottom:-135px;border:1px solid #ffffff30;border-radius:50%;z-index:-1}.cover-blue{background:linear-gradient(120deg,#315bb4,#5688d9)}.cover-green{background:linear-gradient(120deg,#357d71,#78b89c)}.cover-purple{background:linear-gradient(120deg,#685393,#a38abf)}.cover-gold{background:linear-gradient(120deg,#b58a47,#dcb46b)}.cover-coral{background:linear-gradient(120deg,#b96c68,#d9a09b)}.cover-slate{background:linear-gradient(120deg,#4a6c8e,#84a6c3)}.cover-subject{text-transform:uppercase;letter-spacing:2px;font-size:8px;opacity:.85}.cover-symbol{font-family:Georgia,serif;font-size:49px;position:absolute;right:24px;top:39px;opacity:.7;transform:rotate(-10deg)}.cover-title{max-width:75%;font-family:Georgia,"Times New Roman",serif;font-size:25px;line-height:1.13;letter-spacing:-.5px;margin-top:auto;margin-bottom:24px;white-space:pre-line}.cover-foot{display:flex;align-items:center;justify-content:space-between;font-size:7px;letter-spacing:1px;border-top:1px solid 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infinite}.mascot-ruler{position:absolute;width:60px;height:111px;border-radius:9px;top:32px;left:55px;background:linear-gradient(100deg,#77c5f2,#4090d4);border:2px solid #a1d4f3;box-shadow:inset -7px 0 #2f6eae33,0 9px 10px #4a7bae22;transform:rotate(-9deg)}.ruler-lines{position:absolute;left:2px;top:7px;width:15px;height:90px;background:repeating-linear-gradient(to bottom,transparent 0 10px,#c5e6fa 10px 12px)}.mascot-eyes{position:absolute;top:36px;left:17px;display:flex;gap:9px}.mascot-eyes i{display:block;width:8px;height:11px;border-radius:50%;background:#25476b;position:relative;animation:blink 5s infinite}.mascot-eyes i:after{content:"";position:absolute;width:3px;height:3px;background:white;top:2px;left:2px;border-radius:50%}.mascot-mouth{position:absolute;top:56px;left:27px;width:15px;height:10px;background:#284c76;border-radius:2px 2px 10px 10px}.mascot-mouth:after{content:"";position:absolute;bottom:0;left:4px;width:8px;height:4px;border-radius:5px 5px 0 0;background:#f2a0ae}.ruler-star{position:absolute;right:7px;bottom:9px;color:#ffe082;font-size:13px}.mascot-arm{position:absolute;width:15px;height:17px;border:2px solid #6195c1;border-radius:50%;background:#fff;top:93px}.mascot-arm.left{left:36px;transform:rotate(-20deg)}.mascot-arm.right{right:36px;top:75px;transform:rotate(20deg)}.mascot-foot{position:absolute;top:143px;background:#4b8dc6;border:2px solid #8bbce4;width:20px;height:10px;border-radius:10px 10px 3px 3px}.mascot-foot.left{left:57px}.mascot-foot.right{right:59px;top:139px}.mascot-spark{position:absolute;color:#d9ad42;font-size:31px}.mascot-spark.one{right:6px;top:21px}.mascot-spark.two{left:10px;bottom:33px;font-size:22px;color:#91add7}.mascot-stage.waving .mascot-arm.right{animation:wave .5s ease-in-out 4;transform-origin:bottom center}.study-tip{padding:22px}.study-tip h3{font-size:14px;margin:17px 0 9px}.study-tip p{font-size:11px;color:var(--muted);line-height:1.85}.study-tip 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@media(max-width:380px){.content{padding-left:13px;padding-right:13px}.book-grid{grid-template-columns:1fr}.cover{height:205px}.cover-title{font-size:28px;max-width:70%}.book-info h3,.book-author{min-height:0}.assistant-side{grid-template-columns:1fr}.privacy-note{grid-column:auto}.nav-link{min-width:63px;font-size:8px}.search-form input{width:100%;flex-basis:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.book-card:hover{transform:none}}