[hidden]{display:none!important}
body.in-platform .chapter-nav{display:none}body.in-platform #space{opacity:.38}body.in-platform .space-shade{background:linear-gradient(180deg,var(--bg),transparent 50%,var(--bg));opacity:.8}body.in-platform .header{position:relative;padding-bottom:24px}body.in-platform .footer{margin-top:75px}body.in-platform .support{font-size:10px}
.platform{max-width:1500px;margin:auto;padding:20px 44px 0;display:grid;grid-template-columns:190px minmax(0,1fr);gap:40px;min-height:75vh;position:relative;z-index:1}.side-rail{align-self:start;position:sticky;top:25px;padding:12px 10px 20px 0}.side-rail>span{font-size:8px;letter-spacing:2px;color:var(--muted);display:block;margin:0 12px 18px}.side-rail nav{display:grid;gap:3px}.side-rail a{display:flex;align-items:center;gap:11px;padding:11px 12px;font-size:11px;color:var(--muted);border-radius:8px;transition:background .2s,color .2s}.side-rail a svg{width:16px;height:16px}.side-rail a[aria-current=page]{background:var(--soft);color:var(--text);box-shadow:inset 2px 0 var(--blue)}.side-rail a:hover{color:var(--text);background:var(--soft)}.side-rail .rail-foot{margin-top:25px;padding:16px 12px;border-top:1px solid var(--line);font-size:9px;line-height:1.8;color:var(--muted)}.rail-foot b{color:var(--blue);font-weight:500}.platform-body{min-width:0}.page-topline{display:flex;justify-content:space-between;align-items:center;gap:15px;font-size:9px;color:var(--muted);margin:13px 0 36px}.page-topline a{color:var(--text)}.preview-tag{font:8px monospace;letter-spacing:1px;border:1px solid var(--line);padding:7px 10px;border-radius:25px;color:var(--muted)}.page-head{margin-bottom:32px}.page-head .eyebrow{font-size:9px}.page-head h1{font-size:clamp(36px,4.4vw,62px);letter-spacing:-2.6px;line-height:1.1;margin:17px 0}.page-head p{max-width:620px;color:var(--muted);font-size:12px;line-height:1.9;margin:0}.page-view{animation:page-in .45s both}.page-actions{display:flex;gap:10px;margin-top:24px;flex-wrap:wrap}.page-actions .button{padding:13px 18px;font-size:11px}.p-panel{border:1px solid var(--line);border-radius:15px;background:color-mix(in srgb,var(--solid) 82%,transparent);backdrop-filter:blur(15px);padding:25px;min-width:0}.p-panel h2{font-size:21px;letter-spacing:-.6px;margin:0 0 12px}.p-panel p{color:var(--muted);font-size:11px;line-height:1.9}.p-label{font-size:9px;color:var(--muted);text-transform:uppercase;letter-spacing:1.4px}.p-row{display:flex;align-items:center;justify-content:space-between;gap:18px}.p-subhead{margin:32px 0 18px;display:flex;align-items:center;justify-content:space-between;gap:20px}.p-subhead h2{font-size:21px;letter-spacing:-.5px;margin:0}.p-subhead span{color:var(--muted);font-size:10px}.p-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.p-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.p-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.p-tile{position:relative;display:flex;flex-direction:column;min-height:180px;transition:border-color .25s,transform .25s;overflow:hidden}.p-tile:hover{border-color:#97b5ff65;transform:translateY(-3px);color:var(--text)}.p-tile>svg{width:24px;height:24px;color:var(--blue);margin-bottom:22px}.p-tile h3{font-size:16px;font-weight:500;margin:0 0 9px;letter-spacing:-.3px}.p-tile p{margin:0 0 20px;font-size:10px}.p-tile .tile-foot{margin-top:auto;padding-top:13px;border-top:1px solid var(--line);font-size:9px;color:var(--muted);display:flex;justify-content:space-between}.tile-foot svg{width:13px;height:13px}.p-feature{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;min-height:275px;position:relative;overflow:hidden;background:radial-gradient(ellipse at 85% 120%,#81a8ed23,transparent 58%),color-mix(in srgb,var(--solid) 85%,transparent)}.p-feature h2{font-size:35px;letter-spacing:-1.4px;line-height:1.15;margin:14px 0}.p-feature p{max-width:390px}.mini-books{height:220px;position:relative;perspective:900px}.mini-books img{height:190px;position:absolute;top:8px;left:50%;border-radius:4px;box-shadow:7px 20px 30px #0009;transform:translateX(-50%) rotateY(-15deg);object-fit:cover}.mini-books img:first-child{transform:translateX(-106%) rotateY(-15deg) rotate(-8deg);top:20px}.mini-books img:last-child{transform:translateX(6%) rotateY(-15deg) rotate(8deg);top:20px}.mini-books img:nth-child(2){z-index:2}.p-statbar{display:flex;gap:38px;flex-wrap:wrap;margin:20px 0 30px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.p-statbar b{font-size:23px;letter-spacing:-1px;font-weight:500}.p-statbar span{font-size:9px;color:var(--muted);display:block;margin-top:6px}.p-filter{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:26px 0 22px}.p-input,.p-select{background:var(--solid);border:1px solid var(--line);color:var(--text);padding:12px 14px;border-radius:8px;min-width:0;font-size:12px}.p-input{flex:1;min-width:170px}.p-select{max-width:100%}.p-filter .p-input{background:var(--surface)}.p-chips{display:flex;gap:7px;flex-wrap:wrap}.p-chips button,.p-chip{border:1px solid var(--line);border-radius:25px;font-size:10px;padding:9px 14px;color:var(--muted)}.p-chips button[aria-pressed=true]{background:var(--text);color:var(--bg);border-color:var(--text)}.p-result{font-size:10px;color:var(--muted);margin:16px 0}.p-books{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:25px 20px}.p-book{min-width:0}.p-cover{background:linear-gradient(130deg,#ffffff05,#ffffff0a);border:1px solid var(--line);height:230px;border-radius:10px;display:flex;align-items:center;justify-content:center;padding:18px;position:relative;overflow:hidden}.p-cover img{max-height:100%;max-width:100%;object-fit:contain;filter:drop-shadow(5px 9px 9px #0008);transition:transform .4s}.p-book:hover img{transform:translateY(-4px) rotate(-2deg)}.p-book h3{font-size:12px;line-height:1.6;margin:12px 0 5px;font-weight:600}.p-book p{color:var(--muted);font-size:9px;line-height:1.7;margin:4px 0}.p-book .p-label{display:block;margin-top:15px;font-size:8px}.p-book .book-action{display:block;font-size:9px;margin-top:12px;color:var(--blue)}.p-cover .book-badge{position:absolute;bottom:10px;left:10px;background:#090a0ce8;color:#dedee7;border:1px solid #ffffff22;border-radius:20px;padding:5px 8px;font-size:8px}.p-cover .cover-placeholder{font-size:50px;font-weight:200;color:var(--blue)}.p-notice{border-left:2px solid var(--blue);padding:12px 17px;margin:23px 0;color:var(--muted);background:var(--soft);font-size:10px;line-height:1.9}.p-notice strong{color:var(--text);font-weight:500}.p-empty{text-align:center;padding:45px 20px;color:var(--muted);grid-column:1/-1;font-size:12px}.p-more{display:block;margin:30px auto 0;border:1px solid var(--line);border-radius:24px;padding:12px 25px;font-size:11px}.p-split{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(250px,1fr);gap:20px}.topic-list{display:grid;gap:10px}.topic-item{border:1px solid var(--line);border-radius:10px;background:var(--surface);overflow:hidden}.topic-item summary{list-style:none;cursor:pointer;display:flex;gap:16px;align-items:center;padding:19px;font-size:12px}.topic-item summary::-webkit-details-marker{display:none}.topic-item summary .topic-num{font:10px monospace;color:var(--muted);min-width:20px}.topic-item summary .topic-plus{margin-left:auto;color:var(--muted)}.topic-item[open] summary .topic-plus{transform:rotate(45deg)}.topic-detail{padding:0 22px 20px 55px;color:var(--muted);font-size:11px;line-height:1.9}.topic-detail p{margin:5px 0 12px}.topic-detail strong{color:var(--text);font-weight:500}.topic-detail label{display:flex;gap:9px;align-items:center;margin-top:16px;color:var(--blue);font-size:10px}.topic-detail input{accent-color:var(--blue);width:16px;height:16px}.source-note{font-size:9px;line-height:1.9;color:var(--muted);margin-top:25px}.progress-line{height:4px;background:var(--soft);border-radius:5px;overflow:hidden;margin:15px 0}.progress-line>i{display:block;height:100%;background:var(--blue);transition:width .3s}.lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.lesson-art{height:125px;border-bottom:1px solid var(--line);background:radial-gradient(ellipse at 30% 70%,#97b5ff20,transparent 65%),#ffffff03;display:flex;align-items:center;justify-content:center;position:relative}.lesson-art>svg{width:32px;height:32px;color:var(--blue);padding:9px;box-sizing:content-box;border:1px solid var(--line);border-radius:50%;transition:transform .3s}.lesson-card:hover .lesson-art>svg{transform:scale(1.1)}.lesson-card{overflow:hidden;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.lesson-art small{position:absolute;left:15px;bottom:12px;font:8px monospace;color:var(--muted)}.lesson-info{padding:17px}.lesson-info h3{font-size:12px;line-height:1.5;margin:0 0 8px}.lesson-info p{font-size:9px;line-height:1.7;color:var(--muted);margin:5px 0}.plan-board{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.plan-column{border:1px solid var(--line);background:var(--soft);border-radius:14px;padding:18px;min-height:240px}.plan-column h3{display:flex;justify-content:space-between;align-items:center;font-size:11px;font-weight:500;margin:2px 0 20px}.plan-column h3 span{color:var(--muted);font:10px monospace}.task{padding:17px;border:1px solid var(--line);background:var(--surface);border-radius:9px;margin-bottom:10px}.task h4{font-size:12px;line-height:1.7;font-weight:500;margin:9px 0 14px;overflow-wrap:anywhere}.task p{font-size:9px;color:var(--muted)}.task select{font-size:9px;padding:6px;background:var(--solid);color:var(--text);border:1px solid var(--line);border-radius:5px;max-width:100%}.task button{font-size:9px;color:var(--muted);padding:7px}.plan-form{display:grid;grid-template-columns:1.7fr 1fr 1fr auto;gap:10px;margin-bottom:26px}.plan-form input,.plan-form select{width:100%;min-width:0}.plan-form .button{padding:13px;font-size:10px}.orbit-diagram{width:240px;height:240px;position:relative;display:grid;place-items:center;margin:0 auto}.orbit-diagram:before,.orbit-diagram:after{content:'';position:absolute;inset:20px;border:1px solid #a8bbeb38;border-radius:50%;transform:rotateX(50deg) rotate(-25deg)}.orbit-diagram:after{inset:0;transform:rotateX(50deg) rotate(35deg)}.orbit-core{width:95px;height:95px;border-radius:50%;background:radial-gradient(circle at 28% 26%,#fff,#abc1e5 16%,#27364d 50%,#050607 72%);box-shadow:0 0 60px #9abdff22;animation:breathe 8s infinite}.orbit-diagram .orbit-sat{position:absolute;top:42px;right:45px;width:7px;height:7px;background:#fff;border-radius:50%;box-shadow:0 0 20px #ccdfff}.schedule-row{display:grid;grid-template-columns:55px 1fr;gap:17px;padding:18px 0;border-bottom:1px solid var(--line);align-items:center}.schedule-row:last-child{border:0}.schedule-date{font-size:25px;line-height:1.1;letter-spacing:-1px}.schedule-date small{display:block;font-size:8px;letter-spacing:1px;color:var(--muted);margin-top:7px}.schedule-row h3{font-size:11px;font-weight:500;margin:0 0 6px}.schedule-row p{font-size:9px;margin:0;color:var(--muted)}.calculator-wrap{max-width:460px}.calc-display{width:100%;padding:22px 15px;border:1px solid var(--line);background:var(--soft);border-radius:10px;color:var(--text);font-size:25px;text-align:right;font-variant-numeric:tabular-nums}.calc-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:15px}.calc-keys button{border:1px solid var(--line);border-radius:8px;padding:18px;font-size:18px;background:var(--soft)}.calc-keys button:hover{border-color:var(--blue)}.calc-keys button[data-key="="]{background:var(--text);color:var(--bg)}.calc-help{font-size:10px;color:var(--muted);line-height:1.8}.service-state{max-width:720px;margin:15px auto 0;text-align:center;padding:40px}.service-state h2{font-size:28px;line-height:1.3;margin:20px 0}.service-state .page-actions{justify-content:center}.service-state .p-notice{text-align:left}.link-line{display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:19px 0;font-size:12px}.link-line small{display:block;color:var(--muted);font-size:10px;margin-top:6px}.link-line>svg{width:15px}.info-prose{max-width:760px}.info-prose h2{margin-top:30px}.mini-tabs{display:flex;gap:7px;margin:15px 0}.mini-tabs button{padding:10px 16px;font-size:10px;border:1px solid var(--line);border-radius:7px}.mini-tabs button[aria-pressed=true]{background:var(--text);color:var(--bg)}.local-toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:100;background:var(--text);color:var(--bg);border-radius:30px;padding:13px 23px;font-size:11px;box-shadow:0 5px 30px #0007;max-width:calc(100% - 40px);text-align:center}.phone-nav{display:none}
@keyframes page-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media(min-width:1550px){.p-cover{height:275px}}
@media(max-width:1200px){.platform{padding:15px 28px 0;grid-template-columns:165px minmax(0,1fr);gap:25px}.p-books{grid-template-columns:repeat(3,minmax(0,1fr))}.p-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.p-cover{height:225px}.p-panel{padding:21px}.p-split{grid-template-columns:minmax(0,1.4fr) minmax(220px,1fr)}.plan-form{grid-template-columns:1fr 1fr}.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.plan-board{gap:10px}.plan-column{padding:12px}.header .nav{gap:17px}.header .nav a{font-size:10px}}
@media(max-width:900px){.platform{grid-template-columns:1fr;padding:10px 25px 0}.side-rail{position:static;padding:0}.side-rail>span,.side-rail .rail-foot{display:none}.side-rail nav{display:flex;overflow:auto;gap:4px;padding-bottom:7px;scrollbar-width:thin}.side-rail a{flex-shrink:0;padding:10px;font-size:10px}.side-rail a[aria-current=page]{box-shadow:inset 0 -2px var(--blue)}.side-rail a svg{width:13px;height:13px}.p-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.p-split{grid-template-columns:1fr}.page-topline{margin-top:0}.p-feature h2{font-size:29px}}
@media(max-width:600px){.platform{padding:8px 20px 0;gap:20px}.p-grid,.p-grid.two{grid-template-columns:1fr}.p-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.p-feature{grid-template-columns:1fr}.mini-books{height:220px;margin-top:22px}.page-head h1{font-size:39px;letter-spacing:-1.7px}.page-head p{font-size:11px}.page-topline{margin-bottom:24px;font-size:8px}.preview-tag{font-size:7px;padding:6px 8px}.p-books{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 13px}.p-cover{height:190px;padding:13px}.p-book h3{font-size:11px}.p-book p{font-size:8px}.p-filter{gap:8px}.p-filter .p-input{width:100%;flex-basis:100%}.p-filter .p-select{flex:1;font-size:10px}.p-statbar{gap:24px}.p-statbar b{font-size:21px}.p-statbar span{font-size:8px}.plan-board{grid-template-columns:1fr}.plan-column{min-height:140px}.plan-form{grid-template-columns:1fr}.lesson-grid{grid-template-columns:1fr}.lesson-art{height:160px}.topic-item summary{padding:16px;gap:12px;font-size:11px}.topic-detail{padding:0 17px 18px}.p-panel{padding:20px}.service-state{padding:23px}.service-state h2{font-size:24px}.orbit-diagram{width:190px;height:190px}.p-tile{min-height:170px}.p-grid.four .p-tile{padding:15px}.p-grid.four .p-tile h3{font-size:13px}.header-actions>.settings-trigger{display:inline-flex}.header .account{padding:10px 11px;font-size:9px}.header{gap:10px}.header .brand>span{font-size:18px}.header .brand svg{width:23px}.header-actions{gap:4px}.header-actions .icon-button{width:32px;height:32px;padding:7px}body.in-platform .header{padding:19px 20px}.p-chips button{font-size:9px;padding:8px 12px}.p-subhead h2{font-size:19px}.calc-keys button{padding:16px}.local-toast{bottom:75px}.phone-nav{display:block;margin:20px auto 0;padding:12px 20px;border:1px solid var(--line);border-radius:25px;font-size:11px;width:max-content}}
@media(max-width:900px){.platform{grid-template-columns:minmax(0,1fr)}.side-rail{min-width:0;max-width:100%}.side-rail nav{max-width:100%}.p-split{grid-template-columns:minmax(0,1fr)}}
@media(max-width:350px){.platform{padding-inline:15px}.p-cover{height:165px}.header .account{font-size:8px;padding:8px}.header .brand>span{font-size:16px}.header-actions .icon-button{width:27px;height:27px}.p-grid.four{grid-template-columns:1fr}}

/* CEPREUNI exam library */
.exam-thumb{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;padding:0;background:#fff;color:#171717;border:1px solid var(--line,#555);border-radius:12px;overflow:hidden;cursor:pointer;min-height:220px}
.exam-thumb img{display:block;width:100%;height:260px;object-fit:contain;background:#fff}
.exam-thumb span{display:block;padding:12px;font:inherit}
.exam-thumb:focus-visible{outline:3px solid #9385ff;outline-offset:4px}
.exam-book h4{overflow-wrap:anywhere}.exam-book>.text-button{display:inline-block;margin-top:12px}
.exam-preview{width:min(1050px,94vw);max-width:94vw;padding:20px}
.exam-preview .exam-frame img{display:block;max-width:100%;max-height:70vh;margin:auto;object-fit:contain;background:white}
.exam-preview h2{font-size:clamp(16px,3vw,24px)}
@media(max-width:600px){.exam-preview{padding:12px}.exam-thumb img{height:220px}}

/* Complete Drive library directory */
#library-directory{margin:40px 0}.library-directory-group{margin:30px 0;scroll-margin-top:100px}
.library-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.library-directory-link{display:flex;flex-direction:column;justify-content:space-between;gap:16px;padding:20px;overflow-wrap:anywhere}
.library-directory-link small{opacity:.7}.library-directory-link:hover{border-color:currentColor}
@media(max-width:1000px){.library-links{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.library-links{grid-template-columns:1fr}}