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.opt-key{color:var(--acc);border-color:var(--acc-line)}.flag-btn{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:99px;border:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:11.5px;font-weight:700;cursor:pointer;transition:all .18s ease}.flag-btn:hover,.flag-btn.on{border-color:var(--warn-line);color:var(--warn);background:var(--warn-soft)}.flag-btn.on svg{fill:var(--warn)}.qgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.qgrid-btn{aspect-ratio:1;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:11.5px;font-weight:800;cursor:pointer;display:grid;place-items:center;position:relative;transition:all .16s 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var(--ease)}.mini-stats{display:grid;grid-template-columns:1fr 1fr;gap:9px}.mini-stat{padding:11px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2);text-align:center}.mini-stat .ms-n{font-size:18px;font-weight:800;letter-spacing:-.02em}.mini-stat .ms-l{font-size:9px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-top:2px}.exam-foot{display:flex;align-items:center;gap:10px;padding-top:18px;margin-top:26px;border-top:1px solid var(--line)}.exam-foot .spacer{margin-left:auto;display:flex;gap:9px}.kbd-hint{font-size:10.5px;color:var(--faint);font-weight:600}.pause-veil{position:fixed;inset:0;z-index:80;display:grid;place-items:center;background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);animation:fadeIn .25s ease}.pause-card{text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;padding:40px 48px}.pause-ico{width:64px;height:64px;border-radius:20px;background:var(--acc-soft);color:var(--acc);display:grid;place-items:center;animation:breathe 2.4s ease-in-out infinite}.results-hero{display:grid;grid-template-columns:auto 1fr;gap:34px;align-items:center;padding:30px}.ring-wrap{position:relative;display:grid;place-items:center}.ring-wrap .ring-label{position:absolute;text-align:center}.ring-wrap .ring-pct{font-size:30px;font-weight:800;letter-spacing:-.04em;line-height:1}.ring-wrap .ring-sub{font-size:9.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:4px}.ring-svg .ring-track{stroke:var(--surface-3)}.ring-svg .ring-val{transition:stroke-dashoffset 1.3s var(--ease)}.acc-bars{display:flex;flex-direction:column;gap:10px}.acc-bar-row{display:grid;grid-template-columns:92px 1fr 44px;align-items:center;gap:12px;font-size:11.5px;font-weight:700}.acc-bar-row .ab-l{color:var(--muted)}.acc-bar-row .ab-n{text-align:right;font-variant-numeric:tabular-nums}.toast-stack{position:fixed;bottom:22px;right:22px;z-index:100;display:flex;flex-direction:column;gap:9px;max-width:360px}.toast{display:flex;align-items:center;gap:11px;padding:13px 15px;border-radius:14px;border:1px solid var(--line);background:var(--surface);box-shadow:var(--sh-pop);font-size:12.5px;font-weight:600;animation:toastIn .35s var(--ease)}.toast.out{animation:toastOut .3s ease forwards}.toast .t-ico{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;flex-shrink:0}.toast.ok .t-ico{background:var(--ok-soft);color:var(--ok)}.toast.err .t-ico{background:var(--bad-soft);color:var(--bad)}.toast.info .t-ico{background:var(--acc-soft);color:var(--acc)}.modal-veil{position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:18px;background:#080a148c;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fadeIn .22s ease}.modal{width:100%;max-width:440px;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--sh-pop);padding:24px;animation:popIn .32s var(--ease);max-height:88vh;overflow-y:auto}.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:18px}.modal-title{font-size:16px;font-weight:800;letter-spacing:-.02em}.modal-sub{font-size:12px;color:var(--muted);font-weight:500;margin-top:3px}.modal-foot{display:flex;gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}.modal-foot .btn{flex:1}.menu-pop{position:absolute;top:calc(100% + 6px);right:0;min-width:168px;background:var(--surface);border:1px solid var(--line);border-radius:13px;box-shadow:var(--sh-pop);padding:5px;z-index:70;animation:popIn .2s var(--ease)}.menu-item{display:flex;align-items:center;gap:9px;width:100%;padding:8px 10px;border:0;border-radius:8px;background:transparent;color:var(--ink-soft);font-size:12px;font-weight:600;cursor:pointer;text-align:left;transition:background .14s ease,color .14s ease}.menu-item:hover{background:var(--surface-2);color:var(--ink)}.menu-item.danger{color:var(--bad)}.menu-item.danger:hover{background:var(--bad-soft)}.empty{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;padding:46px 24px;border:1.5px dashed var(--line-strong);border-radius:var(--r-lg);background:var(--surface)}.empty .e-ico{width:52px;height:52px;border-radius:16px;background:var(--acc-soft);color:var(--acc);display:grid;place-items:center;margin-bottom:6px}.empty .e-t{font-size:14px;font-weight:800}.empty .e-s{font-size:12px;color:var(--muted);font-weight:500;max-width:380px}.empty .e-actions{display:flex;gap:9px;margin-top:12px;flex-wrap:wrap;justify-content:center}.resume-banner{display:flex;align-items:center;gap:15px;padding:15px 18px;border-radius:var(--r-lg);border:1px solid var(--warn-line);background:linear-gradient(120deg,var(--warn-soft),transparent 70%)}.resume-banner .rb-ico{width:40px;height:40px;border-radius:12px;background:var(--warn-soft);color:var(--warn);display:grid;place-items:center;flex-shrink:0}.resume-banner .rb-t{font-size:13px;font-weight:800}.resume-banner .rb-s{font-size:11.5px;color:var(--muted);font-weight:600;margin-top:1px}.diag{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}.diag-tile{padding:14px;border-radius:var(--r-md);border:1px solid var(--acc-line);background:var(--acc-softer)}.diag-tile .dt-n{font-size:19px;font-weight:800;color:var(--acc);letter-spacing:-.02em}.diag-tile .dt-l{font-size:9.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-top:4px}.diag-errors{margin-bottom:14px}.warn-list{display:flex;flex-direction:column;gap:8px;max-height:180px;overflow-y:auto;padding:2px}.warn-item{display:flex;align-items:flex-start;gap:10px;font-size:11.5px;font-weight:600;line-height:1.5;color:var(--warn);background:var(--warn-soft);border:1px solid var(--warn-line);border-radius:10px;padding:10px 13px}.warn-item svg{flex-shrink:0;margin-top:1px}.study-toolbar{position:sticky;top:61px;z-index:40;display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:13px 15px;border-radius:var(--r-lg);background:color-mix(in srgb,var(--surface) 85%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);box-shadow:var(--sh-1)}@supports not (background: color-mix(in srgb,red 50%,blue)){.study-toolbar{background:var(--surface)}}.study-toolbar .grow{flex:1 1 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toastIn{0%{opacity:0;transform:translate(40px)}to{opacity:1;transform:none}}@keyframes toastOut{to{opacity:0;transform:translate(40px)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.35}}@keyframes breathe{0%,to{transform:scale(1)}50%{transform:scale(1.07)}}@media(max-width:1080px){.exam-layout{grid-template-columns:1fr}.results-hero{grid-template-columns:1fr;justify-items:center;text-align:center}.acc-bar-row{grid-template-columns:80px 1fr 40px}}@media(max-width:960px){.shell{grid-template-columns:1fr}.sidebar{position:fixed;left:0;top:0;height:100vh;height:100dvh;width:272px;transform:translate(-102%);box-shadow:var(--sh-pop);overscroll-behavior:contain}.sidebar.open{transform:none}.scrim.show{display:block;opacity:1}.hamburger{display:inline-grid}.sidebar-foot{display:none}.stat-grid{grid-template-columns:repeat(2,1fr)}.content{padding:20px 16px 60px}.topbar{padding:11px 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img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;display:block}.auth-mark.brand{background:var(--acc-grad);border:0;color:#fff;box-shadow:var(--acc-glow)}.auth-mark.has-photo{background:var(--surface-2);border:1px solid var(--line);box-shadow:none}.auth-title{font-size:20px;font-weight:600;letter-spacing:-.01em}.auth-sub{font-size:13px;color:var(--muted);font-weight:500;line-height:1.5;margin:6px 0 26px}.auth-fine{font-size:10.5px;color:var(--muted);font-weight:500;line-height:1.5;margin-top:20px;opacity:.8}.auth-back{display:inline-flex;align-items:center;gap:4px;background:none;border:0;cursor:pointer;padding:0;font-size:12px;font-weight:700;color:var(--muted);margin-bottom:16px}.auth-back:hover{color:var(--ink)}.auth-spinner{width:26px;height:26px;margin:4px auto 14px;border-radius:50%;border:2.5px solid var(--acc-soft);border-top-color:var(--acc);animation:gen-spin .7s linear 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var(--ease)}.cp-input-row{display:flex;align-items:center;gap:11px;padding:15px 16px;border-bottom:1px solid var(--line);color:var(--faint);flex-shrink:0}.cp-input{flex:1;border:0;outline:0;background:transparent;font-size:15px;font-weight:500;color:var(--ink);min-width:0}.cp-input::placeholder{color:var(--faint);font-weight:500}.cp-esc{font-family:inherit;font-size:10px;font-weight:700;padding:3px 7px;border-radius:5px;background:var(--surface-3);border:1px solid var(--line);color:var(--faint)}.cp-results{overflow-y:auto;padding:7px;flex:1}.cp-group{font-size:9.5px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);padding:10px 10px 5px}.cp-item{display:flex;align-items:center;gap:11px;width:100%;padding:9px 10px;border:0;border-radius:var(--r-sm);background:transparent;color:var(--ink);cursor:pointer;text-align:left}.cp-item.on{background:var(--acc-soft)}.cp-item.on .cp-ico{color:var(--acc)}.cp-ico{display:grid;place-items:center;color:var(--faint);flex-shrink:0}.cp-body{display:flex;flex-direction:column;min-width:0;flex:1;gap:1px}.cp-title{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cp-sub{font-size:11px;color:var(--muted);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cp-item kbd{font-family:inherit;font-size:10px;font-weight:700;padding:2px 6px;border-radius:5px;background:var(--surface-3);border:1px solid var(--line);color:var(--faint);flex-shrink:0}.cp-empty{padding:26px 14px;text-align:center;font-size:13px;color:var(--muted);font-weight:500}.cp-foot{display:flex;gap:16px;flex-wrap:wrap;padding:9px 14px;border-top:1px solid var(--line);background:var(--surface-2);font-size:10.5px;font-weight:600;color:var(--faint);flex-shrink:0}.cp-foot kbd{font-family:inherit;font-size:9.5px;font-weight:700;padding:1px 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