:root{--navy:#101828;--muted:#667085;--line:#e6eaf0;--bg:#f6f8fc;--card:#fff;--blue:#2463eb;--blue2:#1747b5;--green:#1d9b58;--red:#e5484d;--yellow:#f4b740;--purple:#7257e8;--shadow:0 14px 40px rgba(16,24,40,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--navy);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}button,input{font:inherit}button{cursor:pointer}.muted{color:var(--muted)}.eyebrow{font-size:11px;font-weight:900;letter-spacing:.12em;color:#5b6b85}.homebar{height:70px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:40}.brand{display:flex;align-items:center;gap:10px}.brand-badge{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,#1e4fd0,#6b5ce7);color:#fff;display:grid;place-items:center;font-weight:950;font-size:19px;box-shadow:0 7px 18px rgba(36,99,235,.25)}.brand b{display:block;font-size:15px;letter-spacing:.02em}.brand small{display:block;font-size:9px;color:#7b8799;font-weight:800;letter-spacing:.11em;margin-top:2px}.icon-btn,.ghost-btn{border:1px solid var(--line);background:#fff;color:#334155;border-radius:11px;padding:9px 13px;font-weight:800}.icon-btn{width:42px;height:42px}.home-wrap,.result-wrap{max-width:1180px;margin:0 auto;padding:28px 18px 60px}.hero2{min-height:360px;border-radius:28px;background:linear-gradient(135deg,#0f1e3d,#1d3c77 58%,#355fc0);color:#fff;position:relative;overflow:hidden;padding:54px;display:flex;align-items:center;box-shadow:0 25px 65px rgba(22,45,90,.18)}.hero2:after{content:"";position:absolute;right:-110px;bottom:-150px;width:390px;height:390px;border-radius:50%;border:1px solid rgba(255,255,255,.15);box-shadow:0 0 0 70px rgba(255,255,255,.025),0 0 0 140px rgba(255,255,255,.018)}.hero-copy{max-width:690px;position:relative;z-index:2}.hero2 .eyebrow{color:#b9c9ee}.hero2 h1{font-size:48px;line-height:1.04;letter-spacing:-1.8px;margin:14px 0}.hero2 p{font-size:16px;line-height:1.7;color:#d7e0f3;max-width:620px}.hero-actions{display:flex;align-items:center;gap:18px;margin-top:28px}.big-btn,.start-btn,.next-btn{border:0;background:linear-gradient(135deg,#2d6df5,#5c56e8);color:#fff;border-radius:12px;padding:13px 18px;font-weight:900;box-shadow:0 9px 20px rgba(36,99,235,.2)}.big-btn span,.start-btn span,.next-btn{display:inline-block}.hero-stat{font-size:13px;color:#d5def0}.hero-stat b{color:#fff}.hero-stat i{font-style:normal;margin:0 6px;color:#9fb0d0}.hero-orb{margin-left:auto;margin-right:50px;position:relative;z-index:2;width:175px;height:175px;border-radius:50%;border:1px solid rgba(255,255,255,.22);display:grid;place-items:center}.orb-inner{text-align:center}.orb-inner strong{font-size:45px;display:block}.orb-inner span{font-size:10px;letter-spacing:.14em;color:#c6d2eb}.orb-inner em{font-style:normal;font-size:17px;color:#ffd7d7;display:block;margin-top:4px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:15px;margin:34px 0 16px}.section-head h2{font-size:25px;margin:5px 0 0}.test-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.test-tile{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 8px 28px rgba(16,24,40,.045);transition:.18s}.test-tile:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.tile-top{display:flex;justify-content:space-between;align-items:center}.subject-icon{width:44px;height:44px;border-radius:13px;background:#eef3ff;color:#255bd6;display:grid;place-items:center}.pill{padding:6px 9px;border-radius:999px;background:#f1f4f9;color:#516074;font-size:11px;font-weight:900}.test-tile h3{font-size:18px;line-height:1.35;margin:17px 0 8px}.test-tile p{color:#7a8698;font-size:13px;margin:0;line-height:1.5}.tile-meta{display:flex;gap:7px;flex-wrap:wrap;margin:18px 0}.tile-meta span{font-size:11px;padding:7px 9px;border:1px solid var(--line);border-radius:9px;color:#59677a}.start-btn{width:100%;display:flex;justify-content:center;gap:7px}.admin-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:var(--shadow)}.admin-card h1{font-size:34px;margin:10px 0}.dropzone{margin-top:24px;min-height:190px;border:2px dashed #c8d2e2;border-radius:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;background:#fafcff}.dropzone input{display:none}.upload-icon{width:52px;height:52px;border-radius:16px;background:#edf3ff;color:#2760df;display:grid;place-items:center;font-size:28px;font-weight:900;margin-bottom:10px}.dropzone b{font-size:15px}.dropzone small{color:#7a8698;margin-top:5px}.importing,.error-box,.preview-box{margin-top:18px;padding:18px;border-radius:15px;background:#fff;border:1px solid var(--line)}.error-box{color:#b42318;background:#fff5f4}.preview-rows{border:1px solid var(--line);border-radius:14px;overflow:hidden;margin:15px 0}.preview-rows div{display:flex;gap:14px;padding:13px;border-bottom:1px solid var(--line)}.preview-rows div:last-child{border-bottom:0}.preview-rows b{min-width:32px}.preview-rows span{color:#475467}.fatal{min-height:100vh;display:grid;place-items:center;padding:20px}.fatal-card{text-align:center;background:#fff;padding:36px;border-radius:20px;box-shadow:var(--shadow)}.logo-mark{width:50px;height:50px;margin:auto;border-radius:14px;background:#234fc6;color:#fff;display:grid;place-items:center;font-weight:900}
/* exam */
.exam-shell{min-height:100vh;background:#f5f7fb}.exam-top{height:68px;background:#fff;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 22px;position:sticky;top:0;z-index:50}.back-exam{border:0;background:none;color:#475467;font-weight:800;font-size:15px;justify-self:start}.exam-title{text-align:center;line-height:1.15}.exam-title b{display:block;font-size:15px}.exam-title small{font-size:9px;color:#98a2b3;letter-spacing:.12em;font-weight:900}.exam-actions{justify-self:end;display:flex;align-items:center;gap:9px}.clock{font-weight:950;font-variant-numeric:tabular-nums;padding:10px 13px;border-radius:10px;background:#f5f7fa;border:1px solid var(--line);min-width:83px;text-align:center}.clock.urgent{color:#c62828;background:#fff0f0;border-color:#ffc7c7}.submit-top{border:0;background:#fee2e2;color:#c03636;padding:10px 15px;border-radius:10px;font-weight:900}.grid-toggle,.strip-grid{border:1px solid var(--line);background:#fff;color:#475467;border-radius:10px;width:39px;height:39px;font-size:21px}.q-strip{height:51px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 18px;gap:8px}.q-strip-inner{display:flex;gap:5px;overflow:auto;scrollbar-width:none;flex:1}.q-strip-inner::-webkit-scrollbar{display:none}.strip-q{border:0;background:#f0f2f6;color:#6b7280;min-width:34px;height:32px;border-radius:8px;font-size:11px;font-weight:900}.strip-q.active{background:#245fe0;color:#fff}.strip-q.done{background:#dff5e8;color:#167244}.strip-q.flag{box-shadow:inset 0 -3px #e8a928}.strip-q.active.flag{background:#245fe0;box-shadow:inset 0 -3px #ffd36d}.exam-main{max-width:1240px;margin:0 auto;padding:22px;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px}.question-panel,.palette-panel{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 7px 24px rgba(16,24,40,.045)}.question-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px}.q-label{font-size:13px;font-weight:950;letter-spacing:.03em}.marks{font-size:11px;color:#8a96a8;margin-left:10px}.review-btn{border:0;background:#edf3ff;color:#2456c5;border-radius:10px;padding:10px 13px;font-size:12px;font-weight:900}.review-btn.on{background:#fff3cf;color:#966500}.question-content{padding:25px 30px 10px;max-width:930px}.qtext{font-size:19px;line-height:1.7;white-space:pre-wrap;margin-bottom:20px}.options{display:grid;gap:10px}.answer-option{width:100%;border:1px solid #dfe4ec;background:#fff;border-radius:14px;padding:14px 15px;display:flex;align-items:center;gap:13px;text-align:left;transition:.15s}.answer-option:hover{border-color:#9db7f4;background:#fbfdff}.answer-option.selected{border-color:#2d67df;background:#eff5ff;box-shadow:0 0 0 1px #2d67df}.option-letter{width:31px;height:31px;border-radius:50%;border:1px solid #cdd5e1;display:grid;place-items:center;font-size:12px;font-weight:900;flex:none}.selected .option-letter{background:#2864dd;color:#fff;border-color:#2864dd}.option-text{font-size:15px;line-height:1.45;flex:1}.radio-dot{width:18px;height:18px;border:2px solid #cbd3df;border-radius:50%;flex:none}.selected .radio-dot{border:5px solid #2864dd}.exam-bottom{border-top:1px solid var(--line);margin-top:20px;padding:15px 22px;display:flex;justify-content:space-between;align-items:center;gap:10px}.clear-btn{border:0;background:none;color:#667085;font-weight:800;font-size:12px}.nav-btns{display:flex;gap:8px}.prev-btn,.next-btn{border:0;border-radius:10px;padding:11px 15px;font-weight:900}.prev-btn{background:#f0f2f6;color:#475467}.prev-btn:disabled{opacity:.45;cursor:not-allowed}.next-btn{background:#2864dd;color:#fff}.embedded-figure{margin:20px 0;padding:12px;border:1px solid #e1e6ef;border-radius:14px;background:#fbfcfe}.figure-top{display:flex;justify-content:space-between;align-items:center;margin:0 2px 8px;color:#6b7789;font-size:10px;text-transform:uppercase;letter-spacing:.1em;font-weight:900}.expand{border:1px solid var(--line);background:#fff;width:29px;height:29px;border-radius:8px;color:#526175}.figure-image-btn{display:block;width:100%;border:0;background:#fff;padding:5px;border-radius:10px;cursor:zoom-in}.figure-image-btn img{display:block;max-width:100%;max-height:330px;margin:auto;object-fit:contain}.more-figures{display:flex;gap:8px;margin-top:8px}.more-figures button{border:1px solid var(--line);background:#fff;border-radius:9px;padding:4px}.more-figures img{width:85px;height:60px;object-fit:contain}.palette-panel{padding:18px;height:max-content;position:sticky;top:139px}.candidate{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line)}.avatar{width:38px;height:38px;border-radius:11px;background:#edf3ff;color:#245fd8;display:grid;place-items:center;font-weight:950}.candidate b{display:block;font-size:12px}.candidate small{display:block;color:#8a96a8;font-size:10px;margin-top:2px}.palette-head{display:flex;justify-content:space-between;margin:17px 0 12px;font-size:13px}.palette-head span{color:#8a96a8}.palette{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.palette-q{height:39px;border:1px solid #dfe4ec;background:#fff;border-radius:8px;font-size:11px;font-weight:900;color:#59677a}.palette-q.current{outline:2px solid #2864dd;outline-offset:1px}.palette-q.answered{background:#dcf5e6;border-color:#94d7ae;color:#167244}.palette-q.review{background:#fff2ca;border-color:#f1cb67;color:#8c6500}.palette-q.answered.review{background:#eee9ff;border-color:#b9a9f2;color:#6249b8}.legend{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:16px}.legend span{font-size:10px;color:#68768a;display:flex;align-items:center;gap:6px}.l-dot{width:11px;height:11px;border-radius:4px;background:#fff;border:1px solid #d5dce6}.l-dot.answered{background:#dcf5e6;border-color:#94d7ae}.l-dot.review{background:#fff2ca;border-color:#f1cb67}.l-dot.both{background:#eee9ff;border-color:#b9a9f2}.palette-stats{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:18px}.palette-stats div{background:#f8f9fb;border-radius:10px;padding:10px}.palette-stats b{display:block;font-size:17px}.palette-stats small{color:#7b8798;font-size:9px}.grid-drawer,.image-modal,.confirm-overlay{position:fixed;inset:0;background:rgba(15,23,42,.55);z-index:100;display:flex;align-items:flex-end;justify-content:center}.hidden{display:none!important}.drawer-sheet{background:#fff;width:min(720px,100%);border-radius:22px 22px 0 0;padding:20px;max-height:82vh;overflow:auto}.drawer-head{display:flex;justify-content:space-between;align-items:center}.drawer-head b{display:block}.drawer-head small{color:#8a96a8;font-size:10px}.drawer-head button,.image-close{border:0;background:#f0f2f6;width:34px;height:34px;border-radius:50%;font-size:22px;color:#475467}.drawer-summary{display:flex;gap:8px;margin:16px 0}.drawer-summary span{background:#f6f8fb;border-radius:9px;padding:9px;font-size:11px;color:#667085;flex:1}.drawer-summary b{color:#101828}.drawer-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:8px}.image-modal{align-items:center;padding:20px}.image-box{position:relative;background:#fff;border-radius:16px;padding:12px;max-width:min(1000px,95vw);max-height:90vh}.image-box img{max-width:90vw;max-height:82vh;display:block;object-fit:contain}.image-close{position:absolute;right:8px;top:8px;z-index:2}.confirm-overlay{align-items:center;padding:20px}.confirm-card{background:#fff;border-radius:20px;padding:26px;width:min(450px,100%);box-shadow:0 30px 90px rgba(0,0,0,.2)}.confirm-icon{width:42px;height:42px;border-radius:13px;background:#edf3ff;color:#245fd8;display:grid;place-items:center;font-weight:950}.confirm-card h2{margin:14px 0 6px}.confirm-card p{color:#667085}.confirm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.confirm-grid span{background:#f7f8fa;padding:10px;border-radius:9px;font-size:10px;color:#7b8798}.confirm-grid b{display:block;color:#101828;font-size:16px;margin-top:3px}.confirm-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.result-hero{background:linear-gradient(135deg,#0f1e3d,#264b91);color:#fff;border-radius:25px;text-align:center;padding:38px 20px}.result-hero .eyebrow{color:#bdcbed}.score-circle{width:130px;height:130px;border-radius:50%;border:1px solid rgba(255,255,255,.3);display:grid;place-content:center;margin:18px auto}.score-circle b{font-size:42px;line-height:1}.score-circle small{font-size:9px;letter-spacing:.15em;color:#b9c8e4;margin-top:5px}.result-hero h1{margin:5px 0;font-size:30px}.result-hero p{color:#d5def0}.result-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:15px 0}.result-stats div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:17px}.result-stats b{display:block;font-size:24px}.result-stats small{color:#7a8698}.review-list{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.review-row{display:grid;grid-template-columns:38px 28px 1fr 20px;align-items:center;gap:9px;width:100%;text-align:left;border:0;border-top:1px solid var(--line);background:#fff;padding:14px 3px}.review-row:first-of-type{border-top:0}.review-num{font-weight:900;color:#667085}.review-status{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-weight:900}.review-status.ok{background:#dcf5e6;color:#167244}.review-status.bad{background:#ffe3e4;color:#b42318}.review-status.skip{background:#f0f2f5;color:#7b8798}.review-text{font-size:13px;color:#475467;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.review-arrow{color:#98a2b3;font-size:22px}.review-page{max-width:900px;margin:24px auto;padding:0 15px}.result-chip{font-size:11px;font-weight:900;padding:8px 10px;border-radius:9px}.result-chip.good{background:#dcf5e6;color:#167244}.result-chip.bad{background:#ffe3e4;color:#b42318}.result-chip.skip{background:#f0f2f5;color:#667085}.review-option{cursor:default}.review-option.correct{background:#edf9f1;border-color:#9bd6b1}.review-option.wrong-answer{background:#fff1f1;border-color:#f1aaaa}.review-mark{font-weight:950;font-size:20px}.review-option.correct .review-mark{color:#167244}.review-option.wrong-answer .review-mark{color:#b42318}
@media(max-width:900px){.test-list{grid-template-columns:1fr 1fr}.hero2{padding:38px}.hero-orb{margin-right:10px}.exam-main{grid-template-columns:1fr}.palette-panel{display:none}.exam-top{grid-template-columns:auto 1fr auto}.exam-title{text-align:left;margin-left:10px}.grid-toggle{display:block}.question-content{padding:20px}.qtext{font-size:17px}.drawer-grid{grid-template-columns:repeat(8,1fr)}}
@media(min-width:901px){.grid-toggle{display:none}}
@media(max-width:600px){.homebar{padding:0 14px}.home-wrap,.result-wrap{padding:15px 10px 35px}.hero2{min-height:440px;padding:28px 22px;align-items:flex-start}.hero2 h1{font-size:35px}.hero-orb{position:absolute;right:10px;bottom:18px;width:120px;height:120px}.orb-inner strong{font-size:30px}.hero-actions{flex-direction:column;align-items:flex-start}.test-list{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column;gap:3px}.exam-top{height:62px;padding:0 10px}.back-exam span{display:none}.exam-title b{font-size:12px}.exam-title small{display:none}.clock{font-size:13px;min-width:68px;padding:8px}.submit-top{padding:9px 10px;font-size:11px}.grid-toggle{width:34px;height:34px}.q-strip{padding:0 8px}.strip-grid{width:34px;height:34px}.question-head{padding:15px;align-items:flex-start}.review-btn{font-size:10px;padding:9px}.marks{display:block;margin:4px 0 0}.question-content{padding:18px 15px 6px}.qtext{font-size:16px;line-height:1.65}.option-text{font-size:14px}.exam-bottom{padding:12px 15px;position:sticky;bottom:0;background:rgba(255,255,255,.96);z-index:15}.clear-btn{font-size:11px}.prev-btn,.next-btn{padding:10px 11px;font-size:11px}.embedded-figure{margin:16px 0}.figure-image-btn img{max-height:260px}.result-stats{grid-template-columns:1fr 1fr}.review-text{font-size:11px}.drawer-grid{grid-template-columns:repeat(7,1fr)}}

/* Exact PDF question sheets */
.image-question-content{padding-top:18px!important}
.sheet-wrap{border:1px solid #dfe5ee;border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 8px 24px rgba(16,24,40,.05)}
.sheet-toolbar{height:42px;padding:0 12px;display:flex;align-items:center;justify-content:space-between;background:#f7f9fc;border-bottom:1px solid #e8ecf2;color:#667085;font-size:10px;font-weight:900;text-transform:uppercase;letter-spacing:.09em}
.expand-sheet{border:1px solid #d8dee8;background:#fff;border-radius:8px;padding:7px 9px;color:#345bb7;font-size:10px;font-weight:900;cursor:pointer}
.sheet-button{display:block;width:100%;border:0;background:#fff;padding:10px;cursor:zoom-in}
.question-sheet{display:block;width:100%;height:auto;max-height:760px;object-fit:contain;object-position:top center}
.answer-prompt{margin:18px 0 10px;font-size:12px;font-weight:900;color:#667085;text-transform:uppercase;letter-spacing:.08em}
.letter-options{display:grid;grid-template-columns:1fr;gap:10px}.letter-option{justify-content:flex-start;text-align:left;padding:14px 16px}.letter-badge{width:34px;height:34px;border-radius:50%;border:1px solid #cdd5e1;display:grid;place-items:center;font-weight:950;color:#475467;flex:none}.option-copy{font-size:15px;line-height:1.45;flex:1;color:#1d2939}.letter-option .radio-dot{width:18px;height:18px;border:2px solid #cbd3df;border-radius:50%;flex:none}.letter-option.selected .letter-badge{background:#2864dd;color:#fff;border-color:#2864dd}.letter-option.selected .radio-dot{border:5px solid #2864dd}
.letter-option{min-height:62px;border:1px solid #dce2eb;border-radius:13px;background:#fff;display:flex;align-items:center;justify-content:center;gap:7px;cursor:pointer;transition:.15s;position:relative}
.letter-option.selected{border-color:#2864dd;background:#eff5ff;box-shadow:0 0 0 1px #2864dd}
.review-answer-list{margin-top:18px;display:grid;gap:8px}
.review-letter{min-height:48px;border:1px solid #dfe4ec;border-radius:12px;display:flex;align-items:center;gap:10px;padding:8px 12px;background:#fff}
.review-letter b{font-size:11px;color:#667085;flex:1}
.review-letter.correct{background:#edf9f1;border-color:#9bd6b1}.review-letter.correct b{color:#167244}
.review-letter.wrong-answer{background:#fff1f1;border-color:#f1aaaa}.review-letter.wrong-answer b{color:#b42318}
@media(max-width:600px){.sheet-button{padding:6px}.question-sheet{max-height:none}.letter-options{gap:7px}.letter-option{min-height:56px}.letter-badge{width:31px;height:31px}.option-copy{font-size:14px}.letter-option small{font-size:8px}.sheet-toolbar{height:39px}.expand-sheet{padding:6px 8px}}
.question-image-stage{position:relative;border:1px solid #e2e7ef;border-radius:16px;background:#fff;overflow:hidden;box-shadow:0 8px 28px rgba(16,24,40,.05)}
.question-image-stage .sheet-button{display:block;width:100%;border:0;background:#fff;padding:0;cursor:zoom-in}
.question-image-stage .question-sheet{display:block;width:100%;height:auto;max-height:none;object-fit:contain;object-position:top center}
.image-expand-fab{position:absolute;right:10px;top:10px;width:36px;height:36px;border:1px solid #dfe4ec;border-radius:10px;background:rgba(255,255,255,.94);color:#344054;font-weight:900;box-shadow:0 4px 12px rgba(16,24,40,.10);cursor:pointer}
.image-expand-fab:hover{background:#fff;transform:scale(1.03)}
@media(max-width:600px){.question-image-stage{border-radius:12px}.image-expand-fab{width:32px;height:32px;right:8px;top:8px}}
.import-features{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.import-features span{padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:#f8faff;color:#526175;font-size:11px;font-weight:800}.import-progress{height:8px;background:#e9edf4;border-radius:99px;overflow:hidden;margin:15px 0 8px}.import-progress i{display:block;width:0;height:100%;background:linear-gradient(90deg,#2864dd,#7257e8);transition:width .2s}.importing small{color:#667085}.import-success{overflow:hidden}.import-sample{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(240px,.8fr);gap:14px;margin:18px 0}.sample-image{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}.sample-image img{display:block;width:100%;height:auto;max-height:430px;object-fit:contain;object-position:top}.sample-options{display:grid;gap:9px;align-content:start}.sample-options div{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:12px;padding:12px;background:#fbfcfe}.sample-options b{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#edf3ff;color:#245fd8;font-size:11px;flex:none}.sample-options span{font-size:13px;line-height:1.45;color:#475467}.importing{background:#fbfcff}.importing b{font-size:16px}@media(max-width:700px){.import-sample{grid-template-columns:1fr}.sample-image img{max-height:none}}

/* Catalog UI: Subject → Chapter → Topic → Test */
.catalog-bar{box-shadow:0 4px 18px rgba(16,24,40,.03)}
.catalog-top-actions{display:flex;align-items:center;gap:8px}.mini-stat{font-size:11px;color:#7a8698;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:#fff}.mini-stat b{color:#182230;margin-right:3px}.catalog-wrap{padding-top:24px}.catalog-hero{background:linear-gradient(135deg,#0d1c39,#1e3f7c 58%,#385fc0);color:#fff;border-radius:26px;padding:38px 40px;display:flex;align-items:flex-end;justify-content:space-between;gap:30px;box-shadow:0 20px 55px rgba(20,45,90,.14);position:relative;overflow:hidden}.catalog-hero:after{content:"";position:absolute;width:300px;height:300px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:-100px;top:-150px;box-shadow:0 0 0 55px rgba(255,255,255,.025),0 0 0 110px rgba(255,255,255,.02)}.catalog-hero>div{position:relative;z-index:1}.catalog-hero h1{font-size:36px;line-height:1.08;letter-spacing:-1.1px;margin:10px 0}.catalog-hero p{max-width:680px;color:#d7e1f3;line-height:1.65;margin:0}.catalog-hero p b{color:#fff}.catalog-route{display:flex;align-items:center;gap:8px;white-space:nowrap;padding:11px 13px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.08);border-radius:12px;font-size:9px;font-weight:900;letter-spacing:.08em}.catalog-route i{font-style:normal;color:#9eb1d5;font-size:16px}.catalog-route b{color:#fff}.catalog-section{margin-top:30px}.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.subject-card{border:1px solid var(--line);background:#fff;border-radius:20px;padding:22px;text-align:left;box-shadow:0 8px 28px rgba(16,24,40,.045);transition:.18s;position:relative;overflow:hidden}.subject-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cdd9ef}.subject-card.has-tests:after{content:"";position:absolute;right:-25px;top:-30px;width:100px;height:100px;border-radius:50%;background:#eef4ff}.subject-card-top{display:flex;align-items:center;justify-content:space-between;position:relative;z-index:1}.subject-large-icon{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;background:#eef3ff;color:#255bd6;font-size:23px;font-weight:900}.count-pill{font-size:10px;font-weight:900;color:#536176;background:#f4f6f9;border-radius:999px;padding:7px 10px}.subject-card h3{font-size:22px;margin:20px 0 7px}.subject-card p{font-size:12px;color:#7a8698;margin:0 0 24px}.subject-card-foot{border-top:1px solid var(--line);padding-top:14px;display:flex;justify-content:space-between;align-items:center;color:#7a8698;font-size:11px;font-weight:800}.subject-card-foot b{color:#2864dd}.empty-subject{opacity:.65;cursor:default}.empty-subject:hover{transform:none;box-shadow:0 8px 28px rgba(16,24,40,.045);border-color:var(--line)}.quick-strip{margin-top:18px;padding:16px 18px;border:1px solid var(--line);background:#fff;border-radius:15px;display:flex;justify-content:space-between;align-items:center;gap:12px}.quick-strip b{display:block;margin-top:3px;font-size:13px}.outline-btn{border:1px solid #cfd8e7;background:#fff;color:#245dcf;border-radius:10px;padding:10px 13px;font-size:11px;font-weight:900}.back-catalog{border:0;background:none;color:#475467;font-weight:850;font-size:13px;padding:8px 0}.catalog-title{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:9px;text-align:left}.catalog-title b{display:block;font-size:14px}.catalog-title small{display:block;font-size:8px;letter-spacing:.1em;color:#98a2b3;font-weight:900;margin-top:2px}.subject-mini-icon{width:32px;height:32px;border-radius:10px;background:#eef3ff;color:#245fd8;display:grid;place-items:center;font-weight:900}.breadcrumb{display:flex;align-items:center;gap:8px;margin:5px 0 24px;color:#98a2b3;font-size:11px}.breadcrumb button{border:0;background:none;padding:0;color:#4d68a0;font-weight:850}.breadcrumb b{color:#344054}.catalog-page-head{margin-bottom:22px}.catalog-page-head h1{font-size:31px;letter-spacing:-.7px;margin:7px 0}.catalog-page-head p{margin:0;color:#7a8698;font-size:13px}.chapter-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.chapter-card,.topic-card{width:100%;border:1px solid var(--line);background:#fff;border-radius:17px;padding:18px;text-align:left;display:flex;align-items:center;gap:16px;box-shadow:0 7px 22px rgba(16,24,40,.04);transition:.16s}.chapter-card:hover,.topic-card:hover{transform:translateY(-2px);border-color:#c8d5ec;box-shadow:var(--shadow)}.chapter-num,.topic-index{width:42px;height:42px;border-radius:12px;background:#f0f4fb;color:#315cae;display:grid;place-items:center;font-size:11px;font-weight:950;flex:none}.chapter-main,.topic-copy{flex:1}.chapter-main h3{margin:4px 0 6px;font-size:16px}.chapter-main p{margin:0;color:#7a8698;font-size:11px}.card-arrow{font-size:20px;color:#98a2b3}.topic-list{display:grid;gap:10px;max-width:820px}.topic-card{padding:16px}.topic-copy b{display:block;font-size:15px;color:#182230;margin:4px 0}.topic-copy small{color:#7a8698;font-size:10px}.catalog-tests{grid-template-columns:repeat(3,1fr)}.modern-test{min-height:300px}.test-level{display:flex;gap:6px;margin-top:15px;color:#8a96a8;font-size:8px;font-weight:900;letter-spacing:.09em}.modern-test h3{margin-top:10px}.modern-test .start-btn{margin-top:auto}.catalog-tests .test-tile{display:flex;flex-direction:column}.catalog-tests .tile-meta{margin-bottom:14px}
.tile-actions{display:flex;gap:6px;margin-left:auto}.tile-icon-btn{width:30px;height:30px;border-radius:9px;border:1px solid var(--line);background:#fff;color:#516074;font-size:13px;display:grid;place-items:center;padding:0}.tile-icon-btn:hover{border-color:#c8d5ec;background:#f5f8fd}.tile-icon-btn.tile-danger:hover{border-color:#f3b4ac;background:#fff5f4;color:#b42318}.test-search{width:100%;box-sizing:border-box;padding:13px 16px;border:1px solid var(--line);border-radius:13px;font-size:14px;margin-bottom:18px;background:#fff}.test-search:focus{outline:none;border-color:#8fa8e6}
#siteFooter{text-align:center;padding:18px 12px 26px;font-size:11px;font-weight:800;letter-spacing:.04em;color:#98a2b3}
@media(max-width:900px){.subject-grid{grid-template-columns:1fr 1fr}.catalog-tests{grid-template-columns:1fr 1fr}.catalog-hero{padding:30px}.catalog-route{display:none}.chapter-grid{grid-template-columns:1fr}}
@media(max-width:600px){.catalog-top-actions .mini-stat{display:none}.catalog-hero{padding:26px 22px;border-radius:20px}.catalog-hero h1{font-size:29px}.catalog-hero p{font-size:13px}.subject-grid,.catalog-tests{grid-template-columns:1fr}.quick-strip{align-items:flex-start;flex-direction:column}.catalog-title{max-width:48%;overflow:hidden}.catalog-title b,.catalog-title small{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.catalog-page-head h1{font-size:27px}.chapter-card{padding:15px}.breadcrumb{margin-bottom:18px}}
.import-meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:24px;padding:18px;border:1px solid var(--line);border-radius:16px;background:#f8faff}.meta-field{display:flex;flex-direction:column;gap:7px}.meta-field label{font-size:11px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:#5b6b85}.meta-field input{width:100%;border:1px solid #d8e0eb;background:#fff;border-radius:11px;padding:12px 13px;outline:none;color:var(--navy);font-size:14px}.meta-field input:focus{border-color:#7fa2ed;box-shadow:0 0 0 3px rgba(45,109,245,.09)}
@media(max-width:680px){.import-meta{grid-template-columns:1fr}.admin-card{padding:22px}}