html body [data-evaluation-world] .bk-review-list>button[data-review-state]{border-left-width:4px!important;--review-status:#f2c17d}html body [data-evaluation-world] .bk-review-list>button[data-review-state="pending"]{border-color:#b58c45!important;background:#b3822218!important}html body [data-evaluation-world] .bk-review-list>button[data-review-state="correct"]{border-color:#6ba87c!important;background:#4d986014!important;--review-status:#a1deb0}html body [data-evaluation-world] .bk-review-list>button[data-review-state="wrong"]{border-color:#b76676!important;background:#b64e6314!important;--review-status:#ffabb8}html body [data-evaluation-world] .bk-review-list>button[data-review-state="partial"]{border-color:#b58c45!important;background:#b3822212!important}.bk-review-state-label{display:block;font-size:12px;line-height:1.6;margin-top:7px;font-weight:700;color:var(--review-status)}html body [data-evaluation-world] .bk-review-list>button:focus-visible{outline-color:var(--review-status)!important}.bk-review-success{display:flex;gap:9px;align-items:center;padding:12px 15px;margin:0;border-radius:10px;border:1px solid #5d996c;background:#65ad7316;color:#b3e6bc;font-size:14px;line-height:1.6}.bk-review-save-row>.bk-review-success{flex:1 1 100%}.bk-review-release[data-confirm]{border-color:#ffd18e!important;background:#ffc16d!important;color:#2d2114!important}.bk-review button[aria-busy="true"]::before,.bk-question-review button[aria-busy="true"]::before,.bk-company-test button[aria-busy="true"]::before{content:"";display:inline-block;width:15px;height:15px;margin-right:9px;vertical-align:-2px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:bk-action-spin .8s linear infinite}.bk-review button[aria-busy="true"],.bk-question-review button[aria-busy="true"],.bk-company-test button[aria-busy="true"]{opacity:.85!important}.bk-test-home-loading{position:fixed;inset:0;z-index:1500;display:grid;place-items:center;background:var(--app-bg,#071e29);padding:24px}.ek-learning-theme .bk-test-home-loading{background:#171221}.bk-test-home-loading>*{width:min(480px,100%)}@keyframes bk-action-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.bk-review button[aria-busy="true"]::before,.bk-question-review button[aria-busy="true"]::before,.bk-company-test button[aria-busy="true"]::before{animation:none;border-right-style:dotted}}

.bk-test-page .bk-test-time{font-size:22px!important;font-weight:800!important;letter-spacing:.03em;font-variant-numeric:tabular-nums;transition:color 1s linear}.bk-test-mobile-exit{display:none}@media(max-width:1180px){html body .bk-test-page .quiz-exit-button.bk-test-mobile-exit{display:block!important;position:sticky;bottom:0;width:100%;min-height:44px;margin-top:8px;padding:12px 16px;border:1px solid var(--border,#345663);border-radius:10px;background:var(--card,#102e3b);color:var(--text,#e9f5fa);font:inherit;z-index:3}html body .bk-test-page .quiz-question-nav{position:static!important;bottom:auto!important}.bk-test-page .bk-test-time{font-size:19px!important}}

.bk-correction-notice { display:flex; align-items:center; gap:13px; padding:15px 17px; margin:16px 0; border:1px solid #8c6a36; border-radius:12px; background:#382d1f; color:#ffcf89; }
.bk-correction-notice-icon { display:grid; place-items:center; flex:0 0 38px; width:38px; height:38px; border-radius:10px; background:#ffbf5c16; }
.bk-correction-notice > div { min-width:0; }
.bk-correction-notice strong { display:block; font-size:14px; line-height:1.4; }
.bk-correction-notice p { margin:4px 0 0 !important; font-size:12px; line-height:1.6; color:#e3cba8; }
.bk-review-required-row { padding:18px 14px !important; margin:10px 0; border:1px solid #8c6a36 !important; border-left:3px solid #ffc16d !important; border-radius:12px; background:#ffbf5c08; flex-wrap:wrap; }
.bk-review-required-row > div:has(.bk-correction-badge) { display:flex; flex-direction:column; align-items:flex-start; gap:5px; min-width:0; }
.bk-correction-badge { display:inline-flex; align-items:center; justify-content:flex-end; gap:7px; padding:6px 9px; border:1px solid #8c6a36; border-radius:8px; color:#ffcf89; background:#382d1f; }
.bk-correction-badge > svg { width:17px; height:17px; flex:0 0 17px; }
.bk-correction-badge > strong { font-size:12px !important; line-height:1.5; }
.bk-correction-score { font-size:12px !important; color:var(--ass-muted,#c1c8ce); }
button.bk-review-required-action { background:var(--ass-lime,#aceb79) !important; color:#142218 !important; border-color:var(--ass-lime,#aceb79) !important; font-weight:800; width:auto !important; min-width:144px !important; min-height:44px !important; }
button.bk-review-required-action > span { display:inline !important; }
button.bk-review-required-action:hover:not(:disabled) { filter:brightness(1.08); }
button.bk-review-required-action:focus-visible { outline:2px solid var(--ass-lime,#aceb79); outline-offset:3px; }
@media(max-width:700px) {
  .bk-correction-notice { align-items:flex-start; padding:13px; }
  .bk-correction-notice strong { font-size:13px; }
  .bk-review-required-row { gap:12px !important; padding:14px 12px !important; }
  .bk-review-required-row { grid-template-columns:32px minmax(0,1fr) !important; }
  .bk-review-required-row > div:has(.bk-correction-badge) { grid-column:2 / -1; }
  .bk-review-required-row > button.bk-review-required-action { width:100% !important; margin-left:0; grid-column:1 / -1 !important; grid-row:auto !important; }
  .bk-correction-badge { justify-content:flex-start; }
}
@container(max-width:540px) {
  .bk-review-required-row { grid-template-columns:32px minmax(0,1fr) !important; }
  .bk-review-required-row > div:has(.bk-correction-badge) { grid-column:2 / -1; }
  .bk-review-required-row > button.bk-review-required-action { width:100% !important; margin-left:0; grid-column:1 / -1 !important; grid-row:auto !important; }
}

.bk-correction-notice{flex-wrap:wrap}.bk-correction-notice>div:not(.bk-correction-choices){flex:1 1 240px}.bk-correction-open{display:flex;align-items:center;justify-content:center;gap:14px;min-height:44px;padding:11px 16px!important;border:1px solid #dba452!important;border-radius:10px;background:#ffc16d!important;color:#2b2114!important;font:inherit;font-weight:750!important;cursor:pointer}.bk-correction-choices{display:grid;gap:8px;flex-basis:100%}.bk-correction-choices>button{display:flex;justify-content:space-between;padding:12px 16px;border-radius:10px;background:#ffbf5c16;color:#ffcf89;border:1px solid #8c6a36;font:inherit;text-align:left;cursor:pointer}@media(max-width:600px){.bk-correction-open{width:100%}}

.bk-scientific{--calc-bg:#09232f;--calc-field:#061b25;--calc-key:#153845;--calc-border:#385d6b;--calc-accent:#ade578;--calc-text:#e9f5fa;position:fixed!important;inset:auto;margin:0!important;padding:0!important;display:flex;flex-direction:column;box-sizing:border-box;border:1px solid var(--calc-border);border-radius:20px;background:var(--calc-bg);color:var(--calc-text);box-shadow:0 16px 56px #0008;z-index:2147483646;overflow:hidden;font-family:inherit;isolation:isolate;animation:bk-calc-enter .16s ease-out}
.bk-scientific[data-world=volt]{--calc-bg:#211a2f;--calc-field:#150f21;--calc-key:#30263e;--calc-border:#5c4b70;--calc-accent:#ffb347;--calc-text:#f7f2ff}
.bk-scientific *{box-sizing:border-box}.bk-scientific .bk-scientific-titlebar{display:flex;align-items:center;gap:8px;flex:0 0 54px;padding:5px 8px 5px 14px;border-bottom:1px solid var(--calc-border);touch-action:none;user-select:none;cursor:grab;background:var(--calc-bg)}
.bk-scientific-titlebar>svg{flex:none;color:var(--calc-accent)}.bk-scientific-titlebar strong{font-size:15px;line-height:1.2;margin-right:auto}.bk-scientific-grip{opacity:.5}.bk-scientific button{appearance:none;-webkit-appearance:none;display:flex;align-items:center;justify-content:center;position:relative;min-width:0;min-height:44px;margin:0;padding:4px;border:1px solid var(--calc-border);border-radius:10px;font:inherit;font-size:18px;font-weight:600;line-height:1;color:var(--calc-text);background:var(--calc-key);cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;letter-spacing:0;text-transform:none;box-shadow:none}
.bk-scientific button:focus-visible,.bk-scientific input:focus-visible,.bk-scientific-resize:focus-visible{outline:2px solid var(--calc-accent);outline-offset:-3px}.bk-scientific button:active{filter:brightness(1.18)}.bk-scientific-titlebar button{flex:0 0 40px;min-height:40px;width:40px;height:40px;aspect-ratio:1;border-radius:50%;background:transparent}.bk-scientific-titlebar button svg{flex:none;display:block}.bk-scientific-close svg{transition:transform .16s ease}.bk-scientific.is-closing .bk-scientific-close svg{transform:rotate(90deg)}.bk-scientific.is-closing{opacity:0;transition:opacity .16s ease}
.bk-scientific-content{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:12px 12px 16px;scrollbar-width:thin;display:flex;flex-direction:column;gap:10px}.bk-scientific-display{flex:none}.bk-scientific-display label{display:flex;justify-content:space-between;align-items:center;font-size:11px;line-height:1.3;margin:0 1px 6px;font-weight:600}.bk-scientific-display label span{color:var(--calc-accent)}.bk-scientific input{appearance:none;display:block;width:100%;height:52px;min-height:52px;padding:10px 12px;border:1px solid var(--calc-border);border-radius:10px;font:inherit;font-size:24px;line-height:30px;text-align:right;letter-spacing:0;color:var(--calc-text);background:var(--calc-field);box-shadow:none}.bk-scientific input[readonly]{caret-color:transparent}.bk-scientific-display p{font-size:10px;line-height:1.4;min-height:28px;margin:6px 0 0;opacity:.8}.bk-scientific-display p[data-error=true]{color:#ffc1bb;opacity:1}
.bk-scientific-controls{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:5px;flex:none}.bk-scientific-controls button{font-size:11px;min-height:36px}.bk-scientific-controls button[aria-pressed=true]{border-color:var(--calc-accent);color:var(--calc-accent)}.bk-scientific-keypad{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));grid-auto-rows:minmax(44px,1fr);gap:6px;flex:1 0 auto;min-height:394px}.bk-scientific .bk-scientific-equals{background:var(--calc-accent);color:#13241c;border-color:var(--calc-accent)}
.bk-scientific-resize{position:absolute;right:0;bottom:0;width:22px;height:22px;touch-action:none;cursor:nwse-resize;background:linear-gradient(135deg,transparent 46%,var(--calc-border) 47%,var(--calc-border) 53%,transparent 54%,transparent 65%,var(--calc-border) 66%,var(--calc-border) 72%,transparent 73%)}.bk-scientific.is-minimized .bk-scientific-titlebar{border-bottom:0}.bk-scientific[data-phone=true] .bk-scientific-titlebar{cursor:default}
.bk-question-calculator-trigger>svg{display:block;width:20px;height:20px;flex:none}.quiz-header-tools:has(.bk-question-calculator-trigger){display:flex!important;flex-direction:row;align-items:center;justify-content:center;gap:6px;width:max-content}
/* Keep both 44px actions reachable alongside the brand and account actions. */
@layer native-exam-timer {
 @media (max-width:360px) {
  html body header[data-app-header="quiz"]:has(.bk-question-calculator-trigger) > .brand-home-link {
   width:46px!important;min-width:46px!important;max-width:46px!important;overflow:hidden!important;
  }
  html body header[data-app-header="quiz"]:has(.bk-question-calculator-trigger) > .brand-home-link img {
   width:104px!important;max-width:none!important;
  }
 }
 @media (max-width:400px) {
  html body .learning-exam[data-running-exam="true"] > header[data-app-header="quiz"]:has(.bk-question-calculator-trigger) > .brand-home-link {
   width:46px!important;min-width:46px!important;max-width:46px!important;overflow:hidden!important;
  }
  html body .learning-exam[data-running-exam="true"] > header[data-app-header="quiz"]:has(.bk-question-calculator-trigger) > .brand-home-link img {
   width:104px!important;max-width:none!important;
  }
  html body .learning-exam[data-running-exam="true"] > header[data-app-header="quiz"] > .quiz-header-tools:has(.bk-question-calculator-trigger) {
   right:calc(max(14px,env(safe-area-inset-right)) + 96px)!important;gap:3px!important;
  }
  html body .learning-exam[data-running-exam="true"] .quiz-header-tools:has(.bk-question-calculator-trigger) .bk-exam-header-timer {
   font-size:12px;gap:3px;
  }
  html body .learning-exam[data-running-exam="true"] .quiz-header-tools:has(.bk-question-calculator-trigger) .bk-exam-header-timer svg {
   width:13px;height:13px;
  }
 }
}
@keyframes bk-calc-enter{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){.bk-scientific,.bk-scientific-close svg{animation:none;transition:none!important}}

/* Use the exact centered two-line cross and round frame of the formula viewer. */
html body .bk-scientific .bk-scientific-close{position:relative!important;inset:auto!important;flex:0 0 40px!important;display:grid!important;place-items:center!important;width:40px!important;height:40px!important;min-height:40px!important;padding:0!important;border-radius:50%!important;line-height:0!important;color:var(--calc-text);border:1px solid var(--calc-border);background:var(--calc-field)}
.bk-scientific .bk-scientific-close>span{position:relative;display:block;width:16px;height:16px;transform:rotate(0);transform-origin:center;transition:transform .32s cubic-bezier(.25,.75,.35,1)}.bk-scientific .bk-scientific-close>span::before,.bk-scientific .bk-scientific-close>span::after{content:"";position:absolute;top:50%;left:50%;width:16px;height:2px;border-radius:999px;background:currentColor;transform-origin:center}.bk-scientific .bk-scientific-close>span::before{transform:translate(-50%,-50%) rotate(45deg)}.bk-scientific .bk-scientific-close>span::after{transform:translate(-50%,-50%) rotate(-45deg)}.bk-scientific.is-closing .bk-scientific-close>span{transform:rotate(90deg)}@media(hover:hover){.bk-scientific .bk-scientific-close:hover{color:#ff9196;border-color:#ff9196}.bk-scientific .bk-scientific-close:hover>span{transform:rotate(90deg)}}
.bk-scientific .bk-scientific-delete{color:#ffb7c3;background:#71324544;border-color:#ac5f73;font-size:19px}.bk-scientific .bk-scientific-delete svg{width:25px;height:25px;flex:none}.bk-scientific[data-phone=false] .bk-scientific-content{overscroll-behavior:none}.bk-scientific-keypad button:hover{filter:brightness(1.12)}@media(prefers-reduced-motion:reduce){.bk-scientific .bk-scientific-close>span{transition:none}}


/* Browser headers use an existing XY translation; retain its vertical alignment. */
@media(max-width:360px){html body .learning-exam:not([data-running-exam="true"])>header[data-app-header="quiz"]>.quiz-header-tools:has(.bk-question-calculator-trigger){left:50%!important;right:auto!important;transform:translate(-50%,-50%)!important;}}

@media(hover:hover) and (pointer:fine){html body .learning-exam .quiz-question-nav>button:not(:disabled):hover{border-color:var(--accent,#a9e67b)!important;filter:brightness(1.17);box-shadow:0 0 0 1px var(--accent,#a9e67b),0 5px 18px #0003;transition:filter .16s,border-color .16s,box-shadow .16s}.ek-learning-theme .learning-exam .quiz-question-nav>button:not(:disabled):hover{border-color:#ffb347!important;box-shadow:0 0 0 1px #ffb347,0 5px 18px #0003}html body .bk-scientific button:not(:disabled):hover{border-color:var(--calc-accent);filter:brightness(1.18);box-shadow:inset 0 0 0 1px var(--calc-accent),0 3px 10px #0004;transition:filter .14s,box-shadow .14s,border-color .14s}}

/* A parked desktop rail has the same visual 46px frame as quiz tools.
   Keep the header, logo, coordinate system and selected-tab bubble unchanged. */
@media(min-width:1367px){
 html body .learning-home>header[data-app-header="home"].learner-nav.learner-nav.learner-nav.learner-nav.learner-nav.learner-nav.learner-nav.learner-nav.learner-nav>.learning-nav-center{
  transform:translate(-50%,var(--controls-rail-y,-50%)) scale(.8)!important;
  scale:1!important;
  transform-origin:top center!important;
 }
}
/* The existing tablet scroll animation retains its path; only its final size changes. */
@keyframes kk-learning-rail-tablet-settle{
 from{--kk-rail-settle-y:calc(var(--learner-header-height) / 2 - 8px - 50%);--kk-rail-settle-scale:1}
 to{--kk-rail-settle-y:0px;--kk-rail-settle-scale:.8}
}