.ctu-close{--ctu-close-sz: 40px;box-sizing:border-box;width:var(--ctu-close-sz);height:var(--ctu-close-sz);flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;padding:0;margin:0;border-radius:50%;background:linear-gradient(145deg,#1c183af0,#0a0a1af0);border:1.5px solid rgba(255,215,0,.75);color:var(--gold, #ffd700);cursor:pointer;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 4px 16px #0000008c,0 0 18px #ffd70038,inset 0 1px #ffffff14;transition:transform .22s cubic-bezier(.34,1.4,.5,1),background .2s ease,border-color .2s ease,box-shadow .2s ease;-webkit-tap-highlight-color:transparent;font-size:calc(var(--ctu-close-sz) * .55);line-height:1;font-family:inherit}.ctu-close svg{width:42%;height:42%;display:block;pointer-events:none}.ctu-close svg line{stroke:currentColor;stroke-width:2.4;stroke-linecap:round}.ctu-close:hover{background:linear-gradient(145deg,#ffd70042,#d4a0172e);border-color:#ffd700f2;color:#fff3b0;box-shadow:0 6px 22px #00000080,0 0 26px #ffd70061,inset 0 1px #ffffff1f;transform:scale(1.07) rotate(90deg)}.ctu-close:active{transform:scale(.95) rotate(90deg)}.ctu-close:focus-visible{outline:2px solid var(--gold, #ffd700);outline-offset:3px}.ctu-close--sm{--ctu-close-sz: 32px}.ctu-close--panel{position:absolute;top:14px;right:14px;z-index:10}.ctu-close--overlay{position:fixed;top:72px;right:calc((100vw - min(1400px,96vw))/2 + 8px);z-index:1000}#goldbook-panel .gb-header{gap:1rem}#goldbook-panel .gb-header>div:first-child{flex:1 1 auto}#cert-ceremony .cert-content>.ctu-close{position:absolute;top:12px;right:12px;z-index:6}#coach-ov-close,#prof-ov-close{position:absolute;top:68px;right:24px;z-index:3}#lh-chatbox-close{margin-left:auto}.ctu-close--subx{z-index:12}.ctu-close--subx-card{position:absolute;top:14px;right:14px}.ctu-close--subx-fixed{position:fixed;top:72px;right:calc((100vw - min(1400px,96vw))/2 + 12px);z-index:970}#quiz-panel .quiz-header{gap:.75rem}#quiz-panel .quiz-header>.quiz-progress-text{margin-right:auto}.libx-overlay-panel>.ctu-close{position:absolute;top:14px;right:14px;z-index:9999}#library-archives-panel .la-body>.la-topbar{position:relative;padding-right:56px}#library-archives-panel .la-close{position:absolute;top:50%;right:12px;margin-top:-16px;z-index:5}#library-search-panel .lib-search-close{position:absolute;top:64px;right:24px;z-index:9999}@media(prefers-reduced-motion:reduce){.ctu-close{transition:background .2s ease,border-color .2s ease}.ctu-close:hover,.ctu-close:active{transform:none}}