@keyframes nbcRise{0%{opacity:0;transform:translate(var(--rise-x), var(--rise-y))}}@keyframes nbcDraw{to{stroke-dashoffset:0}}@keyframes nbcTick{0%{opacity:0;clip-path:inset(0 0 0 100%)}}:root[data-design=hybrid] .nbc{--t-enter:.9s;--t-step:80ms;--t-swap:.24s;--rise-x:0px;--rise-y:18px}:root[data-design=official] .nbc{--t-enter:.46s;--t-step:45ms;--t-swap:.16s;--rise-x:14px;--rise-y:0px}:root[data-design] .nbc .button{--btn-bg:var(--brand);--btn-ink:#fff;--btn-line:transparent;--btn-sweep:var(--brand-deep);isolation:isolate;border:1px solid var(--btn-line);border-radius:var(--radius);background:var(--btn-bg);min-height:52px;color:var(--btn-ink);box-shadow:none;transition:transform .14s var(--enter), box-shadow .24s var(--enter), border-color .16s linear, opacity .16s linear;justify-content:center;align-items:center;gap:12px;padding:8px 24px;font-size:16.5px;font-weight:600;line-height:1.3;text-decoration:none;display:inline-flex;position:relative;overflow:hidden}:root[data-design] .nbc .button:before{content:"";z-index:-1;background:var(--btn-sweep);transform-origin:100%;transition:transform .42s var(--move);position:absolute;inset:-1px;transform:scaleX(0)}:root[data-design] .nbc .button.primary{box-shadow:0 8px 22px rgb(var(--shadow) / .18)}:root[data-design] .nbc .button.outline{--btn-bg:#fff;--btn-ink:var(--ink);--btn-line:var(--line);--btn-sweep:var(--tint)}:root[data-design] .nbc .button.full-width{width:100%}:root[data-design] .nbc .button:disabled{opacity:.5;box-shadow:none}:root[data-design] .nbc .button[data-busy=true]{pointer-events:none}:root[data-design] .nbc .button[data-busy=true]:before{transform:scaleX(1)}@media (hover:hover) and (pointer:fine){:root[data-design] .nbc .button:not(:disabled):hover{background:var(--btn-bg)}:root[data-design] .nbc .button:not(:disabled):hover:before{transform:scaleX(1)}:root[data-design] .nbc .button.outline:not(:disabled):hover{border-color:var(--accent)}}:root[data-design] .nbc .button:not(:disabled):active{transition-duration:90ms;transform:scale(.97)}:root[data-design] .nbc .text-link{color:var(--brand);font-weight:600}:root[data-design] .nbc .eyebrow{color:var(--accent-ink);letter-spacing:0;font-size:15px;font-weight:600}:root[data-design] .nbc .eyebrow.light{color:var(--on-dark-accent)}:root[data-design] .nbc .auth-page{isolation:isolate;padding:clamp(20px, 4vw, 56px) var(--gutter);background:var(--tint);position:relative}:root[data-design] .nbc .auth-page:before{content:"";z-index:-1;opacity:.45;background:url(/images/competition/weave.svg) 50%/150px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(at 50% 30%,#000,#0000 74%);mask-image:radial-gradient(at 50% 30%,#000,#0000 74%)}:root[data-design] .nbc .registration-grid{border:1px solid var(--line);border-radius:calc(var(--radius) + 6px);width:min(100%,1180px);max-width:none;box-shadow:0 26px 60px rgb(var(--shadow) / .1);background:#fff;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:0;margin-inline:auto;display:grid;overflow:clip}:root[data-design] .nbc .registration-aside{isolation:isolate;background:var(--night) var(--banner) center / cover;color:var(--on-dark);text-align:start;animation:nbcRise var(--t-enter) var(--enter) both;border-radius:0;flex-direction:column;align-items:stretch;gap:14px;padding:clamp(24px,3vw,40px);display:flex;position:relative;overflow:hidden}:root[data-design] .nbc .registration-aside:before{display:none}:root[data-design] .nbc .registration-aside h1{color:inherit;margin:0}:root[data-design] .nbc .registration-aside .book-title{width:min(100%,250px)}:root[data-design] .nbc .registration-aside .book-title-kicker{margin-block:0 12px;font-size:18px}:root[data-design] .nbc .registration-aside>p{color:var(--on-dark-2);margin:0;font-size:16px;line-height:1.9}:root[data-design] .nbc .aside-points{color:var(--on-dark);gap:8px;margin:4px 0 0;font-size:15.5px;display:grid}:root[data-design] .nbc .aside-points span{align-items:center;gap:10px;display:flex}:root[data-design] .nbc .aside-points svg{color:var(--on-dark-accent)}:root[data-design] .nbc .registration-book{border-radius:var(--radius);color:var(--on-dark);transition:transform .24s var(--enter), border-color .16s linear, background-color .2s linear;background:#ffffff0d;border:1px solid #fff3;align-items:center;gap:14px;margin-top:6px;padding:10px;display:flex}:root[data-design] .nbc .registration-book img{width:58px;height:auto;transition:transform .3s var(--enter);box-shadow:-4px 6px 12px #00000057}:root[data-design] .nbc .registration-book span{line-height:1.6;display:grid}:root[data-design] .nbc .registration-book small{color:var(--on-dark-2);font-size:13.5px}:root[data-design] .nbc .registration-book strong{font-size:15.5px}:root[data-design] .nbc .registration-book .book-link-feedback{color:var(--on-dark-accent);align-items:center;gap:6px;font-size:13.5px;font-weight:600;display:flex}@media (hover:hover) and (pointer:fine){:root[data-design] .nbc .registration-book:hover{border-color:var(--accent-hi);background:#ffffff17;transform:translateY(-2px)}:root[data-design] .nbc .registration-book:hover img{transform:rotate(-3deg)translateY(-2px)}}:root[data-design] .nbc .registration-book:active{transition-duration:90ms;transform:scale(.98)}:root[data-design] .nbc .registration-aside-note{color:var(--on-dark-2);border-top:1px solid #ffffff29;margin-top:auto;padding-top:14px;font-size:14px;line-height:1.8}:root[data-design] .nbc .form-card{box-shadow:none;animation:nbcRise var(--t-enter) var(--enter) calc(var(--t-step) * 2) both;background:#fff;border:0;border-radius:0;padding:clamp(22px,3vw,40px)}:root[data-design] .nbc .form-card h2{margin-top:2px;font-size:clamp(26px,2.6vw,34px);font-weight:700;line-height:1.4}:root[data-design] .nbc .form-card>.muted{color:var(--muted);font-size:16px}:root[data-design] .nbc .form-heading{margin-top:18px}:root[data-design] .nbc .auth-mode-nav{isolation:isolate;border:1px solid var(--line);border-radius:calc(var(--radius) + 2px);background:var(--tint);grid-template-columns:repeat(2,minmax(0,1fr));gap:0;padding:4px;display:grid;position:relative}:root[data-design] .nbc .auth-mode-nav:before{content:"";inset-block:4px;z-index:-1;border-radius:var(--radius);background:var(--brand);width:calc(50% - 4px);box-shadow:0 6px 14px rgb(var(--shadow) / .18);transition:transform .38s var(--move);position:absolute;right:4px}:root[data-design] .nbc .registration-grid[data-mode=login] .auth-mode-nav:before{transform:translate(-100%)}:root[data-design] .nbc .auth-mode-nav a{border-radius:var(--radius);min-height:46px;color:var(--muted);background:0 0;justify-content:center;align-items:center;gap:8px;font-size:15.5px;font-weight:600;transition:color .2s linear;display:inline-flex}:root[data-design] .nbc .auth-mode-nav a[aria-current]{color:#fff;background:0 0}:root[data-design] .nbc .auth-mode-nav a:hover:not([aria-current]){color:var(--ink);background:0 0}:root[data-design] .nbc .auth-mode-nav a:active{transform:scale(.98)}:root[data-design] .nbc .registration-progress{color:var(--muted);grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:16px 0 0;padding:0;font-size:14.5px;font-weight:600;list-style:none;display:grid}:root[data-design] .nbc .registration-progress li{align-items:center;gap:8px;padding-bottom:8px;display:flex;position:relative}:root[data-design] .nbc .registration-progress li:after{content:"";inset-inline:0;background:var(--sand);border-radius:2px;height:2px;position:absolute;bottom:0}:root[data-design] .nbc .registration-progress li[aria-current]:after,:root[data-design] .nbc .registration-progress li[data-complete=true]:after{background:var(--accent)}:root[data-design] .nbc .registration-progress li[aria-current]{color:var(--ink)}:root[data-design] .nbc .registration-progress li>span{border:1px solid var(--line);width:26px;height:26px;color:inherit;background:#fff;border-radius:50%;place-items:center;font-size:13.5px;display:grid}:root[data-design] .nbc .registration-progress li[aria-current]>span,:root[data-design] .nbc .registration-progress li[data-complete=true]>span{border-color:var(--brand);background:var(--brand);color:#fff}:root[data-design] .nbc .form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 16px;margin-top:18px;display:grid}:root[data-design] .nbc .form-grid .full-width,:root[data-design] .nbc .form-section-label{grid-column:1/-1}:root[data-design] .nbc .form-section-label{border-bottom:1px solid var(--line);color:var(--brand);align-items:center;gap:8px;margin:6px 0 0;padding-bottom:8px;font-size:15.5px;font-weight:700;display:flex}:root[data-design] .nbc .form-section-label svg{color:var(--accent-ink)}:root[data-design] .nbc .form-grid label{gap:6px;font-size:15px;font-weight:600;line-height:1.6;display:grid}:root[data-design] .nbc .form-card input:not([type=checkbox]),:root[data-design] .nbc .form-card select{border:1px solid var(--line);border-radius:var(--radius);width:100%;height:52px;color:var(--ink);transition:border-color .16s linear, box-shadow .2s var(--enter);background-color:#fff;padding-inline:14px;font-size:16.5px;line-height:1.4}:root[data-design] .nbc .form-card input:not([type=checkbox]):focus,:root[data-design] .nbc .form-card select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgb(var(--shadow) / .14);outline:0}:root[data-design] .nbc .form-card input::placeholder{color:#6c7f74;font-size:15px}:root[data-design] .nbc .form-card input[aria-invalid=true]{border-color:#9a3328;box-shadow:0 0 0 3px #9a33281a}@media (hover:hover) and (pointer:fine){:root[data-design] .nbc .form-card input:not([type=checkbox]):hover,:root[data-design] .nbc .form-card select:hover:not(:disabled){border-color:var(--muted)}:root[data-design] .nbc .form-card input:not([type=checkbox]):focus:hover,:root[data-design] .nbc .form-card select:focus:hover{border-color:var(--brand)}}:root[data-design] .nbc .form-field{align-content:start;gap:4px;min-width:0;display:grid}:root[data-design] .nbc .field-msg{min-height:22px;color:var(--muted);font-size:13.5px;line-height:1.6}:root[data-design] .nbc .field-msg.bad{color:#9a3328;font-weight:600}:root[data-design] .nbc .field-msg.good{color:#256044;font-weight:600}:root[data-design] .nbc .checkbox-label{color:var(--muted);align-items:flex-start;gap:10px;margin-block:16px;font-size:15px;line-height:1.8;display:flex}:root[data-design] .nbc .checkbox-label input{width:20px;height:20px;accent-color:var(--brand);flex:none;margin-top:4px}:root[data-design] .nbc .checkbox-label a{color:var(--brand);text-underline-offset:3px;font-weight:600;text-decoration:underline}:root[data-design] .nbc .form-security{color:var(--muted);align-items:center;gap:8px;margin-top:14px;font-size:14px;display:flex}:root[data-design] .nbc .form-security svg{color:var(--accent-ink)}:root[data-design] .nbc .notice{border-color:var(--line);border-radius:var(--radius);background:var(--tint);color:var(--ink)}:root[data-design] .nbc .form-card fieldset>label{gap:6px;margin-top:12px;font-size:15px;font-weight:600;display:grid}:root[data-design] .nbc .form-card input.otp-input{letter-spacing:.5em;text-align:center;text-indent:.5em;height:68px;padding-inline:0;font-size:28px;font-weight:700}:root[data-design] .nbc .form-card input.otp-input::placeholder{letter-spacing:.2em;font-size:20px}:root[data-design] .nbc .form-card [role=status],:root[data-design] .nbc .form-card [role=timer]{font-size:15px}:root[data-design] .nbc .form-switch{color:var(--muted);flex-wrap:wrap;justify-content:center;gap:6px;margin-top:12px;font-size:14.5px;display:flex}:root[data-design] .nbc .form-switch button{min-height:40px;color:var(--brand);background:0 0;border:0;font-weight:600}:root[data-design] .nbc .participate-page{background:var(--tint);min-height:62vh;margin:0;padding:0}:root[data-design] .nbc .participate-page:has(>.receipt-card){padding:clamp(20px,4vw,56px) 16px}:is(:root[data-design] .nbc .participate-page:has(>.empty-state),:root[data-design] .nbc .participate-page:has(>.loading-state)){padding:clamp(40px, 8vw, 96px) var(--gutter);place-items:center;display:grid}:root[data-design] .nbc .empty-state{border:1px solid var(--line);border-radius:calc(var(--radius) + 6px);width:min(100%,520px);min-height:0;box-shadow:0 22px 50px rgb(var(--shadow) / .08);text-align:center;animation:nbcRise var(--t-enter) var(--enter) both;background:#fff;justify-items:center;gap:14px;padding:clamp(26px,4vw,44px);display:grid}:root[data-design] .nbc .empty-state h1{font-size:clamp(26px,3vw,36px);font-weight:700}:root[data-design] .nbc .loading-state{color:var(--muted)}:root[data-design] .nbc .simulation-entry{width:min(100%, calc(var(--wrap) + 2 * var(--gutter)));max-width:none;padding:18px var(--gutter);border:0;border-bottom:1px solid var(--line);box-shadow:none;background:0 0;border-radius:0;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px 32px;margin:0 auto;display:flex}:root[data-design] .nbc .simulation-entry h2{font-size:clamp(20px,2vw,26px);font-weight:700}:root[data-design] .nbc .participation-intro{isolation:isolate;background:var(--night) var(--banner) center / cover;max-width:none;color:var(--on-dark);margin:0;padding:0;position:relative;overflow:hidden}:root[data-design] .nbc .participation-intro:after{content:"";z-index:-1;pointer-events:none;background:radial-gradient(closest-side,#ffeebc33,#0000);border-radius:50%;width:min(52vw,620px);position:absolute;inset:6% -6% 0 auto}:root[data-design=official] :is(:root[data-design] .nbc) .participation-intro:after{background:radial-gradient(closest-side,#7fd6f533,#0000)}:root[data-design] .nbc .intro-layout{width:min(100%, calc(var(--wrap) + 2 * var(--gutter)));max-width:none;padding:clamp(32px, 4.4vw, 64px) var(--gutter);box-shadow:none;background:0 0;border:0;border-radius:0;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:clamp(24px,4vw,64px);margin-inline:auto}:root[data-design] .nbc .intro-layout>.book-cover-slot{height:clamp(340px,34vw,480px);box-shadow:none;background:0 0;border:0;border-radius:0;align-self:center}:root[data-design] .nbc .intro-copy{min-width:0;animation:nbcRise var(--t-enter) var(--enter) both;justify-items:start;gap:12px;display:grid}:root[data-design] .nbc .book-cover-slot{animation:nbcRise var(--t-enter) var(--enter) calc(var(--t-step) * 3) both}:root[data-design] .nbc .participation-intro .eyebrow{color:var(--on-dark-accent)}:root[data-design] .nbc .participation-intro h1{color:#fff;margin:0;font-size:clamp(34px,4.4vw,56px);font-weight:700;line-height:1.3}:root[data-design] .nbc .intro-registration{color:var(--on-dark-2);flex-wrap:wrap;align-items:center;gap:8px 14px;font-size:15px;display:flex}:root[data-design] .nbc .intro-registration>span:first-child{color:var(--on-dark);align-items:center;gap:6px;display:inline-flex}:root[data-design] .nbc .intro-registration svg{color:var(--on-dark-accent)}:root[data-design] .nbc .intro-stage{border-radius:var(--radius);color:var(--on-dark);background:#ffffff14;border:1px solid #ffffff4d;padding:3px 12px;font-size:14.5px}:root[data-design] .nbc .intro-message{max-width:58ch;color:var(--on-dark-2);margin:0;font-size:clamp(16.5px,1.3vw,18px);line-height:1.95}:root[data-design] .nbc .intro-facts{width:100%;color:var(--on-dark);border-block:1px solid #ffffff29;gap:6px;margin:4px 0;padding-block:8px;font-size:15.5px}:root[data-design] .nbc .intro-fact-icon{color:var(--on-dark-accent);background:#ffffff0f;border:1px solid #fff3}:root[data-design] .nbc .intro-readiness,:root[data-design] .nbc .intro-window{color:var(--on-dark-2);margin:0;font-size:14.5px}:root[data-design] .nbc .intro-readiness svg{color:var(--on-dark-accent)}:root[data-design] .nbc .participation-intro .participation-start-actions{margin-top:6px}:root[data-design] .nbc .participation-intro .button.primary{--btn-bg:var(--cta-bg);--btn-ink:var(--cta-ink);--btn-sweep:var(--cta-sweep);box-shadow:0 10px 26px #0000002e}:root[data-design] .nbc .participation-intro .button.primary:disabled{--btn-bg:#ffffff1a;--btn-ink:var(--on-dark-2);--btn-line:#ffffff42;border-color:var(--btn-line);background:var(--btn-bg);color:var(--btn-ink);box-shadow:none;opacity:1}:root[data-design] .nbc .participation-intro .button.outline{--btn-bg:transparent;--btn-ink:var(--on-dark);--btn-line:#ffffff6b;--btn-sweep:#ffffff21}:root[data-design] .nbc .participation-intro .competition-closing-time,:root[data-design] .nbc .participation-intro .competition-closing-time button{color:var(--on-dark-2)}:root[data-design] .nbc .book-cover-placeholder{color:var(--on-dark-2);background:#ffffff0f;border-color:#fff3}:root[data-design] .nbc .exam-preview{background:var(--tint);padding:10px clamp(12px,1.8vw,24px)}:root[data-design] .nbc .competition-heading h1{color:var(--ink);font-size:19px;font-weight:700}:root[data-design] .nbc .question-segment{border-color:var(--line);border-radius:var(--radius);color:var(--muted);transition:background-color .24s linear, border-color .16s linear, color .16s linear, transform .12s var(--enter);background:#fff}:root[data-design] .nbc .question-segment.answered,:root[data-design] .nbc .question-segment.pending{border-style:solid;border-color:var(--brand);background:var(--brand);color:#fff}:root[data-design] .nbc .question-segment.current{border:2px solid var(--accent);color:var(--ink)}:root[data-design] .nbc .question-segment.answered.current,:root[data-design] .nbc .question-segment.pending.current{color:#fff}:root[data-design] .nbc .exam-shell .compact-question-strip{background:0 0;border:0}:root[data-design] .nbc .save-status{border:1px solid var(--line);border-radius:var(--radius);min-height:34px;color:var(--muted);background:#fff;padding-inline:10px;font-size:13.5px;font-weight:600}:root[data-design] .nbc .save-status.saved{color:#256044}:root[data-design] .nbc .question-card{border:1px solid var(--line);border-radius:calc(var(--radius) + 4px);box-shadow:0 14px 34px rgb(var(--shadow) / .06);background:#fff}:root[data-design] .nbc .question-toolbar{border-color:var(--line);color:var(--muted);font-size:15px;font-weight:600}:root[data-design] .nbc .question-body{animation:nbcRise var(--t-swap) var(--enter) both;padding:clamp(16px,2.2vw,28px)}:root[data-design] .nbc .question-body h2{color:var(--ink);letter-spacing:0;font-size:clamp(20px,1.9vw,25px);font-weight:700;line-height:1.65}:root[data-design] .nbc .question-body h2:focus{outline:0}:root[data-design] .nbc .answer-instruction{color:var(--muted);margin-block:6px 10px;font-size:15px}:root[data-design] .nbc .answer-options{border:0;gap:10px;min-width:0;margin:0;padding:0;display:grid}:root[data-design] .nbc .answer-option{isolation:isolate;border:1px solid var(--line);border-radius:var(--radius);min-height:66px;color:var(--ink);cursor:pointer;transition:border-color .16s linear, transform .12s var(--enter), box-shadow .22s var(--enter);background:#fff;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:14px;padding:10px 14px;font-size:16.5px;font-weight:500;line-height:1.7;display:grid;position:relative;overflow:hidden}:root[data-design] .nbc .answer-option:before{content:"";z-index:-1;background:var(--tint);transform-origin:100%;transition:transform .38s var(--move);position:absolute;inset:0;transform:scaleX(0)}:root[data-design] .nbc .answer-letter{border:1px solid var(--line);border-radius:var(--radius);width:42px;height:42px;color:var(--ink);background:#fff;place-items:center;font-weight:700;transition:background-color .2s linear,color .2s linear,border-color .2s linear;display:grid}@media (hover:hover) and (pointer:fine){:root[data-design] .nbc .answer-option:not(:has(input:disabled)):not(.selected):hover{border-color:var(--accent);background:#fff}:root[data-design] .nbc .answer-option:not(:has(input:disabled)):hover:before{transform:scaleX(1)}}:root[data-design] .nbc .answer-option:not(:has(input:disabled)):active{transition-duration:90ms;transform:scale(.985)}:root[data-design] .nbc .answer-option.selected{border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand);background:#fff}:root[data-design] .nbc .answer-option.selected:before{transform:scaleX(1)}:root[data-design] .nbc .answer-option.selected .answer-letter{border-color:var(--brand);background:var(--brand);color:#fff}:root[data-design] .nbc .answer-option.selected:not(:has(.answer-result)):after{content:"";background:var(--brand);width:24px;height:24px;animation:nbcTick .3s var(--enter) 60ms both;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 4 4L19 6'/%3E%3C/svg%3E") 50%/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 4 4L19 6'/%3E%3C/svg%3E") 50%/contain no-repeat}:root[data-design] .nbc .answer-option.correct:before,:root[data-design] .nbc .answer-option.incorrect:before{display:none}:root[data-design] .nbc .answer-feedback{border-radius:var(--radius)}:root[data-design] .nbc .question-tip{border-color:var(--line);border-radius:var(--radius);background:var(--tint);margin-top:14px}:root[data-design] .nbc .question-footer{background:#fff;padding:12px clamp(12px,2vw,20px)}:root[data-design] .nbc .exam-shell .question-footer .button{min-height:48px;padding:8px 18px;font-size:15.5px}:root[data-design] .nbc 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.result-book{order:3}:root[data-design] .nbc .result-standing,:root[data-design] .nbc .result-standing-loading{order:4}:root[data-design] .nbc .result-policy{order:5}:root[data-design] .nbc .leaderboard{order:6}:root[data-design] .nbc .result-continue{order:7}:root[data-design] .nbc .result-screen h1>svg{display:none}:root[data-design] .nbc .done-tick{fill:none;width:76px;height:76px;stroke:var(--brand);stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;display:block}:root[data-design] .nbc .done-tick circle,:root[data-design] .nbc .done-tick path{stroke-dasharray:1;stroke-dashoffset:1px;animation:nbcDraw .7s var(--move) .12s forwards}:root[data-design] .nbc .done-tick path{animation-duration:.4s;animation-delay:.64s}:root[data-design] .nbc .result-screen h1{color:var(--ink);letter-spacing:0;margin:0;font-size:clamp(28px,3.2vw,42px);font-weight:700}:root[data-design] .nbc .result-hidden,:root[data-design] .nbc 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.book-reading-note{max-width:60ch;color:var(--on-dark);margin:0;font-size:clamp(16.5px,1.3vw,18px);line-height:1.95}:root[data-design] .nbc .book-access-actions{flex-wrap:wrap;align-items:center;gap:12px 14px;margin-top:4px;display:flex}:root[data-design] .nbc .book-access-actions .button{--btn-bg:transparent;--btn-ink:var(--on-dark);--btn-line:#ffffff6b;--btn-sweep:#ffffff21;min-height:56px}:root[data-design] .nbc .book-download{min-height:44px;color:var(--on-dark-accent);text-underline-offset:5px;align-items:center;gap:8px;font-weight:600;-webkit-text-decoration:underline #0000;text-decoration:underline #0000;transition:text-decoration-color .2s linear;display:inline-flex}@media (hover:hover) and (pointer:fine){:root[data-design] .nbc .book-download:hover{text-decoration-color:currentColor}}:root[data-design] .nbc .book-file-details{color:var(--on-dark-2);flex-wrap:wrap;gap:0;margin:6px 0 0;padding:0;font-size:14.5px;list-style:none;display:flex}:root[data-design] .nbc 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h2{letter-spacing:0;font-size:clamp(26px,2.8vw,38px);font-weight:700}:root[data-design] .nbc .book-reader-heading .link{margin-top:0}:root[data-design] .nbc .reader{border-color:var(--line);border-radius:calc(var(--radius) + 4px);box-shadow:0 16px 38px rgb(var(--shadow) / .07);background:#fff}:root[data-design] .nbc .reader-toolbar{border-color:var(--line);background:#fff}@media (max-width:1080px){:root[data-design] .nbc .book-topic-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:900px){:root[data-design] .nbc .registration-grid{grid-template-columns:minmax(0,1fr)}:root[data-design] .nbc .registration-aside .aside-points,:root[data-design] .nbc .registration-aside-note{display:none}:root[data-design] .nbc .registration-aside .book-title{width:min(100%,200px)}}@media (max-width:760px){:root[data-design] .nbc .auth-page{padding:12px}:root[data-design] .nbc .registration-aside{gap:10px;padding:20px}:root[data-design] .nbc .registration-aside 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