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var(--bg-elevated)))}.notif-hub__read-all:hover:not(:disabled){background:var(--brand-soft);color:var(--brand)}.notif-hub__read-all:disabled{opacity:.45;cursor:default}.notif-hub__all{color:var(--brand)!important;background:color-mix(in srgb,var(--brand) 8%,transparent)}.notif-hub__all:hover{background:var(--brand-soft)}.header-notify{display:none}@media(max-width:1024px){.header-notify{display:flex}.nav-auth .notif-hub{display:none}.notif-hub__trigger{width:var(--touch-min);height:var(--touch-min)}.notif-hub__dropdown{position:fixed;top:calc(4.1rem + var(--safe-top));right:calc(.75rem + var(--safe-right));left:auto}}.breadcrumbs{margin:0 0 1rem;padding:0;min-width:0}.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:.2rem 0;list-style:none;margin:0;padding:0;font-size:.84rem;line-height:1.35;color:var(--text-dim)}.breadcrumbs__item{display:inline-flex;align-items:center;min-width:0}.breadcrumbs__sep{margin:0 .45rem;opacity:.45;-webkit-user-select:none;user-select:none}.breadcrumbs__link{color:var(--brand);font-weight:500;text-decoration:none;border-radius:4px;transition:color .15s,background .15s;padding:.35rem .2rem;min-height:var(--touch-min, 44px);display:inline-flex;align-items:center}.breadcrumbs__link:hover{color:var(--brand-hover, var(--brand));text-decoration:underline;text-underline-offset:2px}.breadcrumbs__current{color:var(--text);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(52vw,18rem);padding:.35rem .1rem;min-height:var(--touch-min, 44px);display:inline-flex;align-items:center}@media(max-width:480px){.breadcrumbs{margin-bottom:.75rem}.breadcrumbs__list{font-size:.78rem}.breadcrumbs__current{max-width:42vw}}.site-progress{position:sticky;top:var(--header-offset, 3.6rem);z-index:90;padding:.35rem var(--layout-pad-x, 2rem) .45rem;padding-left:calc(var(--layout-pad-x, 2rem) + var(--safe-left, 0px));padding-right:calc(var(--layout-pad-x, 2rem) + var(--safe-right, 0px));background:color-mix(in srgb,var(--bg-panel) 94%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.site-progress__row{display:flex;align-items:center;justify-content:space-between;gap:.75rem;max-width:min(100%,var(--layout-max, 1280px));margin:0 auto .3rem}.site-progress__label{font-size:.72rem;font-weight:600;letter-spacing:.02em;color:var(--text-dim);text-transform:uppercase}.site-progress__link{font-size:.75rem;font-weight:700;color:var(--brand);text-decoration:none;min-height:var(--touch-min, 44px);display:inline-flex;align-items:center}.site-progress__link:hover{text-decoration:underline;text-underline-offset:2px}.site-progress__track{max-width:min(100%,var(--layout-max, 1280px));margin:0 auto;height:6px;border-radius:999px;background:var(--bg-muted);overflow:hidden}.site-progress__fill{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--brand),var(--accent, var(--brand)));transition:width .35s ease}.site-progress__fill--empty{opacity:.35}@media(max-width:1024px){.site-progress{padding-left:1rem;padding-right:1rem}}@media(max-width:480px){.site-progress{padding:.3rem .85rem .4rem}.site-progress__label{font-size:.68rem}}.companion-sprite{position:relative;width:140px;height:168px;overflow:visible;pointer-events:none;animation:companion-bob 2.4s ease-in-out infinite}.companion-sprite--sm{width:88px;height:108px}.companion-sprite--lg{width:168px;height:200px}.companion-sprite__sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.companion-sprite__art{width:100%;height:calc(100% - 16px);position:relative}.companion-sprite__img,.companion-sprite__svg{width:100%;height:100%;object-fit:contain;display:block}.companion-sprite__svg svg{width:100%;height:100%;display:block}.companion-sprite__shadow{width:58%;height:12px;margin:0 auto;border-radius:50%;background:color-mix(in srgb,#000 22%,transparent);filter:blur(2px)}.companion-sprite--sm .companion-sprite__shadow{height:8px}@keyframes companion-bob{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.companion-sprite--talk.companion-sprite--custom{animation:companion-bob 2.4s ease-in-out infinite,companion-talk-pulse .45s ease infinite alternate}@keyframes companion-talk-pulse{0%{filter:brightness(1)}to{filter:brightness(1.08)}}.companion-sprite--hit{animation:companion-hit .5s ease}@keyframes companion-hit{0%,to{transform:scale(1) rotate(0)}30%{transform:scale(.92) rotate(-6deg)}60%{transform:scale(1.05) rotate(4deg)}}.companion-sprite--win{animation:companion-win .9s ease}@keyframes companion-win{0%,to{transform:translateY(0) scale(1)}35%{transform:translateY(-10px) scale(1.06)}70%{transform:translateY(-4px) scale(1.02)}}.companion-sprite--lose{animation:companion-gloat .8s ease}@keyframes companion-gloat{0%,to{transform:scale(1)}40%{transform:scale(1.08) translateY(-4px)}}.companion-sprite--inflate{animation:companion-inflate-fly 2.2s ease-in forwards}@keyframes companion-inflate-fly{0%{transform:scale(1) translateY(0) rotate(0);opacity:1}35%{transform:scale(1.45) translateY(-10px) rotate(-4deg)}70%{transform:scale(1.7) translateY(-80px) rotate(8deg);opacity:.85}to{transform:scale(2.1) translateY(-220px) rotate(18deg);opacity:0}}.companion-sprite--slash{animation:companion-slash-hit .42s ease}@keyframes companion-slash-hit{0%,to{transform:translateY(0) rotate(0)}20%{transform:translateY(2px) rotate(-4deg) scale(.97)}45%{transform:translateY(-2px) rotate(3deg) scale(1.02)}70%{transform:translateY(1px) rotate(-1deg)}}.companion-sprite__slash{position:absolute;top:8%;right:10%;bottom:28%;left:10%;z-index:4;pointer-events:none}.companion-sprite__slash-blade,.companion-sprite__slash-glow{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:4px}.companion-sprite__slash-blade{background:linear-gradient(135deg,transparent 42%,#fff 46%,#fef3c7 50%,transparent 54%);animation:companion-slash-cut .42s ease}.companion-sprite__slash-glow{box-shadow:0 0 18px color-mix(in srgb,#f59e0b 55%,transparent);animation:companion-slash-cut .42s ease}@keyframes companion-slash-cut{0%{opacity:0;transform:translate(-12px,-8px) rotate(-18deg)}40%{opacity:1}to{opacity:0;transform:translate(14px,10px) rotate(12deg)}}.companion-sprite__trail{position:absolute;left:50%;top:20%;width:8px;height:80px;margin-left:-4px;background:linear-gradient(transparent,color-mix(in srgb,#ef4444 50%,transparent));animation:companion-trail 1.2s ease-out forwards;pointer-events:none}@keyframes companion-trail{to{opacity:0;transform:translateY(-40px) scaleY(1.4)}}.spr-senior{position:relative;width:100%;height:100%}.spr-senior__stem{position:absolute;top:2%;left:50%;width:8px;height:14px;margin-left:-4px;background:#3f6212;border-radius:3px 3px 0 0;z-index:3}.spr-senior__calyx{position:absolute;top:6%;left:50%;width:54px;height:22px;margin-left:-27px;z-index:2}.spr-senior__calyx span{position:absolute;top:4px;left:50%;width:16px;height:12px;margin-left:-8px;background:#4d7c0f;border-radius:0 70% 40%;transform-origin:50% 0}.spr-senior__calyx span:nth-child(1){transform:rotate(-50deg) translateY(2px)}.spr-senior__calyx span:nth-child(2){transform:rotate(-22deg)}.spr-senior__calyx span:nth-child(3){transform:rotate(0);background:#3f6212}.spr-senior__calyx span:nth-child(4){transform:rotate(22deg)}.spr-senior__calyx span:nth-child(5){transform:rotate(50deg) translateY(2px)}.spr-senior__body{position:absolute;top:14%;left:50%;width:108px;height:118px;margin-left:-54px;border-radius:48% 48% 44% 44%/42% 42% 58% 58%;background:radial-gradient(circle at 32% 28%,#fb7185 0 18%,transparent 42%),linear-gradient(180deg,#f43f5e,#e11d48 42%,#9f1239);border:3px solid color-mix(in srgb,#7f1d1d 55%,transparent);box-shadow:inset -10px -14px 18px color-mix(in srgb,#7f1d1d 28%,transparent),0 10px 22px color-mix(in srgb,#000 22%,transparent);overflow:hidden}.companion-sprite--sm .spr-senior__body{width:68px;height:74px;margin-left:-34px}.spr-senior__shine{position:absolute;top:14%;left:16%;width:28%;height:22%;border-radius:50%;background:color-mix(in srgb,#fff 35%,transparent);filter:blur(1px)}.spr-senior__face{position:absolute;top:22%;right:18%;bottom:30%;left:18%}.spr-senior__eye{position:absolute;top:38%;width:12px;height:14px;border-radius:50%;background:#f8fafc;box-shadow:inset 0 -2px #0f172a}.spr-senior__eye--l{left:16%}.spr-senior__eye--r{right:16%}.spr-senior__brow{position:absolute;top:18%;width:18px;height:4px;background:#0f172a;border-radius:2px}.spr-senior__brow--l{left:12%;transform:rotate(-18deg)}.spr-senior__brow--r{right:12%;transform:rotate(18deg)}.spr-senior__mouth{position:absolute;left:50%;bottom:8%;width:28px;height:10px;margin-left:-14px;border-radius:0 0 14px 14px;background:#0f172a}.companion-sprite--talk .spr-senior__mouth{animation:companion-mouth .35s ease infinite alternate}@keyframes companion-mouth{0%{height:8px}to{height:14px;border-radius:8px}}.companion-sprite--hit .spr-senior__mouth{height:6px;border-radius:6px;background:#64748b}.companion-sprite--lose .spr-senior__mouth{height:16px;border-radius:0 0 16px 16px}.companion-sprite--lose .spr-senior__brow--l{transform:rotate(-28deg)}.companion-sprite--lose .spr-senior__brow--r{transform:rotate(28deg)}.companion-sprite--win .spr-senior__mouth{height:14px;border-radius:0 0 16px 16px}.companion-sprite--inflate .spr-senior__body{border-radius:50%}.spr-senior__tie{position:absolute;bottom:14%;left:50%;width:16px;height:24px;margin-left:-8px;background:var(--gold, #f59e0b);clip-path:polygon(50% 0,100% 35%,70% 100%,30% 100%,0 35%);z-index:1}.spr-senior__badge{position:absolute;bottom:6px;left:50%;transform:translate(-50%);font-size:.52rem;font-weight:800;letter-spacing:.08em;color:color-mix(in srgb,#fff 88%,#fecaca);text-shadow:0 1px 0 color-mix(in srgb,#7f1d1d 55%,transparent)}.spr-mentor{position:relative;width:100%;height:100%}.spr-mentor__hat{position:absolute;top:0;left:50%;width:72px;height:58px;margin-left:-36px;background:linear-gradient(180deg,#4f46e5,#312e81);clip-path:polygon(50% 0,92% 78%,8% 78%);z-index:2;box-shadow:0 8px 16px color-mix(in srgb,#312e81 35%,transparent)}.spr-mentor__hat-brim{position:absolute;bottom:-6px;left:50%;width:84px;height:12px;margin-left:-42px;border-radius:50%;background:#3730a3}.spr-mentor__hat-star{position:absolute;top:38%;left:50%;width:8px;height:8px;margin-left:-4px;background:#fde68a;clip-path:polygon(50% 0,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%)}.spr-mentor__head{position:absolute;top:38%;left:50%;width:56px;height:48px;margin-left:-28px;border-radius:46% 46% 40% 40%;background:linear-gradient(180deg,#fde8cd,#e8b98a);z-index:1}.spr-mentor__eye{position:absolute;top:38%;width:8px;height:10px;border-radius:50%;background:#0f172a}.spr-mentor__eye--l{left:14px}.spr-mentor__eye--r{right:14px}.spr-mentor__brow{position:absolute;top:26%;width:12px;height:3px;background:#78716c;border-radius:2px}.spr-mentor__brow--l{left:12px;transform:rotate(-8deg)}.spr-mentor__brow--r{right:12px;transform:rotate(8deg)}.spr-mentor__mouth{position:absolute;left:50%;bottom:28%;width:14px;height:6px;margin-left:-7px;border-radius:0 0 10px 10px;background:#b45309}.companion-sprite--talk .spr-mentor__mouth{animation:companion-mouth .4s ease infinite alternate}.spr-mentor__beard{position:absolute;left:50%;bottom:-18%;width:46px;height:28px;margin-left:-23px;background:linear-gradient(180deg,#e2e8f0,#94a3b8);border-radius:0 0 50% 50%;z-index:2}.spr-mentor__robe{position:absolute;bottom:8%;left:50%;width:78px;height:42px;margin-left:-39px;background:linear-gradient(180deg,#4338ca,#1e1b4b);border-radius:18px 18px 22px 22px}.spr-mentor__clasp{position:absolute;top:8px;left:50%;width:12px;height:12px;margin-left:-6px;border-radius:50%;background:#fbbf24;box-shadow:0 0 8px color-mix(in srgb,#f59e0b 50%,transparent)}.companion-sprite--lose .spr-mentor__brow--l{transform:rotate(12deg)}.companion-sprite--lose .spr-mentor__brow--r{transform:rotate(-12deg)}.spr-rex{position:relative;width:100%;height:100%}.spr-rex__tail{position:absolute;right:4%;top:48%;width:42px;height:16px;background:linear-gradient(90deg,#3f6212,#65a30d);border-radius:0 80% 80% 0;transform:rotate(18deg)}.spr-rex__body{position:absolute;left:22%;top:38%;width:58px;height:48px;background:linear-gradient(180deg,#4d7c0f,#3f6212);border-radius:40% 30% 40% 50%;box-shadow:inset -6px -8px 10px color-mix(in srgb,#1a2e05 35%,transparent)}.spr-rex__belly{position:absolute;left:18%;bottom:10%;width:64%;height:40%;border-radius:50%;background:color-mix(in srgb,#d9f99d 55%,transparent)}.spr-rex__arm{position:absolute;top:28%;width:10px;height:14px;background:#4d7c0f;border-radius:6px}.spr-rex__arm--l{left:8px;transform:rotate(-28deg)}.spr-rex__arm--r{left:20px;transform:rotate(18deg)}.spr-rex__head{position:absolute;left:6%;top:18%;width:64px;height:42px;background:linear-gradient(180deg,#65a30d,#3f6212);border-radius:40% 70% 50% 40%;z-index:2}.spr-rex__jaw{position:absolute;left:2%;bottom:-6px;width:52px;height:16px;background:#4d7c0f;border-radius:0 0 40% 30%}.spr-rex__eye{position:absolute;top:28%;width:10px;height:10px;border-radius:50%;background:#fef3c7;box-shadow:inset 0 -2px #0f172a}.spr-rex__eye--l{left:28%}.spr-rex__eye--r{left:48%}.spr-rex__brow{position:absolute;top:16%;left:24%;width:28px;height:4px;background:#1a2e05;border-radius:2px;transform:rotate(-8deg)}.spr-rex__tooth{position:absolute;bottom:2px;width:5px;height:7px;background:#f8fafc;clip-path:polygon(50% 100%,0 0,100% 0)}.spr-rex__tooth--1{left:14px}.spr-rex__tooth--2{left:24px}.spr-rex__legs{position:absolute;left:30%;bottom:10%;width:40px;height:22px}.spr-rex__legs span{position:absolute;bottom:0;width:12px;height:22px;background:#365314;border-radius:4px 4px 3px 3px}.spr-rex__legs span:first-child{left:2px}.spr-rex__legs span:last-child{right:2px}.companion-sprite--talk .spr-rex__jaw{animation:companion-jaw .35s ease infinite alternate}@keyframes companion-jaw{0%{transform:translateY(0)}to{transform:translateY(3px)}}.companion-sprite--lose .spr-rex__brow{transform:rotate(-18deg) translateY(2px)}@media(max-width:640px){.companion-sprite--md{width:110px;height:134px}}.companion-stage{position:fixed;left:calc(1rem + var(--safe-left, 0px));bottom:calc(1.15rem + var(--safe-bottom, 0px) + var(--cookie-banner-h, 0px));z-index:var(--z-companion-stage, 150);display:flex;flex-direction:column;align-items:stretch;gap:.35rem;max-width:min(32rem,calc(100vw - 2rem));pointer-events:none;animation:companion-stage-in .55s cubic-bezier(.2,1.15,.35,1) both}@keyframes companion-stage-in{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.companion-stage--out{pointer-events:none;animation:companion-stage-out .48s cubic-bezier(.4,.05,.7,.2) forwards}@keyframes companion-stage-out{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(72px) scale(.94)}}.companion-stage__close{position:absolute;top:-.85rem;right:-.85rem;z-index:3;pointer-events:auto;-webkit-appearance:none;-moz-appearance:none;appearance:none;display:grid;place-items:center;width:2.85rem;height:2.85rem;border:2.5px solid var(--text);border-radius:999px;background:var(--brand);color:var(--bg-panel);cursor:pointer;box-shadow:0 0 0 4px var(--bg-panel),var(--shadow-lg)}.companion-stage__close-icon{width:1.15rem;height:1.15rem;fill:none;stroke:currentColor;stroke-width:2.6;stroke-linecap:round}.companion-stage__close:hover,.companion-stage__close:focus-visible{color:var(--bg-panel);background:var(--text);border-color:var(--text);transform:scale(1.06)}.companion-stage__close:focus-visible{outline:2px solid color-mix(in srgb,var(--brand) 55%,transparent);outline-offset:3px}.companion-stage__cast{display:flex;align-items:flex-end;justify-content:space-around;gap:.5rem;width:100%;padding:0 .35rem}.companion-stage__slot{display:flex;justify-content:center;min-width:0}.companion-stage--cast3 .companion-stage__cast{gap:.35rem}.companion-stage--embedded{position:relative;left:auto;bottom:auto;z-index:auto;width:100%;max-width:none;gap:.55rem;pointer-events:auto;animation:companion-stage-in .45s cubic-bezier(.2,1.15,.35,1) both}.companion-stage__incident{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem .65rem;padding:.45rem .7rem;border-radius:12px;border:1px solid var(--border);background:color-mix(in srgb,var(--bg-panel) 88%,var(--brand));pointer-events:auto}.companion-stage__incident .companion-stage__restart{margin-left:auto}.companion-stage__toolbar{display:flex;justify-content:flex-end;pointer-events:auto}.companion-stage__restart{font-size:.78rem;min-height:32px}.companion-stage__incident-text{display:flex;flex-direction:column;gap:.1rem;min-width:0}.companion-stage__incident-text strong{font-size:.92rem;line-height:1.25}.companion-stage__incident-text span{font-size:.75rem;color:var(--text-dim)}.companion-stage__severity{flex-shrink:0;padding:.2rem .55rem;border-radius:999px;font-size:.68rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--bg-muted);color:var(--text)}.companion-stage__severity--low{background:color-mix(in srgb,#65a30d 22%,var(--bg-panel));color:#3f6212}.companion-stage__severity--medium{background:color-mix(in srgb,#ca8a04 22%,var(--bg-panel));color:#854d0e}.companion-stage__severity--high{background:color-mix(in srgb,#ea580c 22%,var(--bg-panel));color:#9a3412}.companion-stage__severity--critical{background:color-mix(in srgb,#e11d48 28%,var(--bg-panel));color:#9f1239}.companion-stage__choice-timer{align-self:center;font-size:.75rem;font-weight:600;color:var(--text-dim)}.companion-stage__cta{margin-top:.85rem;display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.45rem}.companion-stage--embedded.companion-stage--out{animation:none}.companion-stage--fullcast .companion-stage__cast{display:grid;grid-template-columns:1fr 1fr 1fr;align-items:end;justify-items:center;min-height:13.5rem;padding:.35rem .75rem 0}.companion-stage--fullcast .companion-stage__slot .companion-sprite{width:clamp(4.75rem,18vw,10.5rem);height:clamp(5.85rem,22vw,12.5rem)}.companion-stage--fullcast .companion-stage__slot--mentor{z-index:1}.companion-stage--fullcast .companion-stage__slot.is-idle{opacity:.48;filter:saturate(.85)}.companion-stage--fullcast .companion-stage__slot.is-speaking{opacity:1;transform:translateY(-.35rem)}.companion-stage--embedded .companion-stage__bubble{padding:1.2rem 1.45rem 1.35rem;min-height:8.25rem;border-radius:20px 20px 20px 12px}.companion-stage--embedded .companion-stage__bubble:after{left:50%;transform:translate(-50%);border-width:12px;bottom:-12px}.companion-stage--embedded .companion-stage__line{font-size:1.08rem;line-height:1.5}.companion-stage__bubble{pointer-events:auto;width:100%;padding:.85rem 1.15rem 1rem;background:var(--bg-panel);border:2px solid color-mix(in srgb,var(--text) 16%,var(--border));border-radius:16px 16px 16px 6px;box-shadow:var(--shadow-lg);position:relative;animation:companion-bubble-in .35s ease .12s both}.companion-stage__bubble--continue{cursor:pointer}.companion-stage__bubble:focus-visible{outline:2px solid color-mix(in srgb,var(--brand) 55%,transparent);outline-offset:3px}.companion-stage__hint{position:absolute;right:0;bottom:calc(100% + 10px);z-index:4;padding:.32rem .6rem;border-radius:8px;background:color-mix(in srgb,var(--text) 88%,var(--bg-panel));color:var(--bg-panel);font-size:.72rem;font-weight:600;line-height:1.3;white-space:nowrap;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(6px);transition:opacity .16s ease,transform .16s ease}.companion-stage__close:hover .companion-stage__hint,.companion-stage__close:focus-visible .companion-stage__hint{opacity:1;transform:translateY(0)}.companion-stage__bubble:after{content:"";position:absolute;left:28px;bottom:-10px;border:10px solid transparent;border-top-color:var(--bg-panel);filter:drop-shadow(0 2px 0 color-mix(in srgb,var(--text) 12%,transparent))}@keyframes companion-bubble-in{0%{opacity:0;transform:translateY(8px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.companion-stage__line{margin:0;font-size:.95rem;line-height:1.4;color:var(--text)}.companion-stage__line+.companion-stage__line{margin-top:.55rem;padding-top:.5rem;border-top:1px dashed var(--border)}.companion-stage__line strong{display:block;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:.15rem}.companion-stage__line--mentor strong{color:#4f46e5}.companion-stage__line--senior strong{color:#e11d48}.companion-stage__line--rex 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a:hover{color:var(--brand)}.nav-dropdown{position:relative}.nav-dropdown__trigger{display:inline-flex;align-items:center;gap:.35rem;padding:0;border:none;background:none;font:inherit;font-size:.92rem;font-weight:500;color:var(--text-dim);cursor:pointer;transition:color .2s}.nav-dropdown__trigger:hover,.nav-dropdown.is-active .nav-dropdown__trigger,.nav-dropdown.is-open .nav-dropdown__trigger{color:var(--brand)}.nav-dropdown__caret{font-size:.65rem;opacity:.75;transition:transform .15s ease}.nav-dropdown.is-open .nav-dropdown__caret{transform:rotate(180deg)}.nav-dropdown__menu{position:absolute;top:calc(100% + .4rem);left:0;min-width:11rem;padding:.35rem;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);z-index:120}.nav-dropdown__item{display:flex;align-items:center;gap:.4rem;padding:.5rem .65rem;border-radius:calc(var(--radius-sm) - 2px);color:var(--text-dim);font-size:.9rem;font-weight:500;text-decoration:none;transition:background .15s,color .15s}.nav-unread{width:.45rem;height:.45rem;border-radius:50%;background:var(--brand, var(--d-primary));flex-shrink:0}.nav-dropdown__item:hover,.nav-dropdown__item.active{color:var(--brand);background:var(--brand-soft)}.app-main{flex:1;padding:1.5rem var(--layout-pad-x) 3rem;max-width:min(100%,var(--layout-max));margin:0 auto;width:100%}@media(min-width:1600px){:root{--layout-max: 1520px;--layout-wide: 1560px;--layout-pad-x: 1.75rem;--block-card-width: 300px;--block-sheet-width: 460px}}@media(min-width:1920px){:root{--layout-max: 1800px;--layout-wide: 1840px;--layout-pad-x: 2rem;--block-card-width: 400px;--block-sheet-width: 560px}}@media(min-width:2560px){:root{--layout-max: 2200px;--layout-wide: 2280px;--layout-pad-x: 2.25rem;--block-card-width: 480px;--block-sheet-width: 640px}}@media(min-width:3000px){:root{--layout-max: min(2800px, 92vw);--layout-wide: min(2960px, 94vw);--layout-pad-x: clamp(1.5rem, 2.2vw, 3rem);--block-card-width: 560px;--block-sheet-width: 720px}}@media(max-height:950px)and (min-width:1025px){.app-main{padding-top:1rem;padding-bottom:1.75rem}}img{height:auto}.panel{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow)}.btn{--btn-bg: var(--bg-panel);--btn-border: color-mix(in srgb, var(--text) 22%, var(--border-strong));--btn-rim: color-mix(in srgb, var(--text) 14%, transparent);--btn-deep: color-mix(in srgb, var(--text) 22%, transparent);--btn-fg: var(--brand);position:relative;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:2.6rem;padding:.55em 1.35em;border-radius:.5em;border:1.5px solid var(--btn-border);outline:none;cursor:pointer;background:var(--btn-bg);color:var(--btn-fg);font-size:.9375rem;font-weight:700;font-family:inherit;line-height:1.2;text-decoration:none;text-shadow:none;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;transform:scale(1);transform-origin:center;box-shadow:inset 0 1px color-mix(in srgb,#fff 35%,transparent),inset -1px -1px 3px var(--btn-rim),0 1px 2px color-mix(in srgb,var(--text) 6%,transparent);transition:box-shadow .25s ease,color .25s ease,border-color .25s ease,background-color .25s ease,transform .25s ease}.btn:hover{transform:scale(.985);border-color:color-mix(in srgb,var(--btn-border) 70%,var(--brand));box-shadow:inset 0 -5px 12px -6px var(--btn-deep),inset 0 5px 12px -6px var(--btn-deep),0 1px 2px color-mix(in srgb,var(--text) 8%,transparent)}.btn:active{transform:scale(.94);box-shadow:inset 0 -8px 10px -6px var(--btn-deep),inset 0 8px 10px -6px var(--btn-deep),inset 6px 0 8px -6px color-mix(in srgb,var(--btn-deep) 70%,transparent),inset -6px 0 8px -6px color-mix(in srgb,var(--btn-deep) 70%,transparent),0 0 0 4px color-mix(in srgb,var(--btn-fg) 22%,transparent)}.btn:focus-visible{transform:scale(.985);box-shadow:inset 0 -5px 12px -6px var(--btn-deep),inset 0 5px 12px -6px var(--btn-deep),0 0 0 2px color-mix(in srgb,var(--brand) 40%,transparent)}.btn .itu-loader-host--btn{color:inherit}.btn .itu-loader-host--btn .itu-loader__orbs span{background:currentColor}.btn-primary{--btn-bg: color-mix(in srgb, var(--brand) 7%, var(--bg-panel));--btn-border: color-mix(in srgb, var(--brand) 28%, var(--border-strong));--btn-rim: color-mix(in srgb, var(--brand) 12%, transparent);--btn-deep: color-mix(in srgb, var(--text) 18%, var(--brand));--btn-fg: var(--brand)}.btn-danger{--btn-bg: color-mix(in srgb, #dc2626 5%, var(--bg-panel));--btn-border: color-mix(in srgb, #dc2626 28%, var(--border-strong));--btn-rim: color-mix(in srgb, #dc2626 12%, transparent);--btn-deep: color-mix(in srgb, #7f1d1d 35%, transparent);--btn-fg: #b91c1c}.btn-lg{min-height:3rem;padding:.7em 1.75em;font-size:1.05rem}.btn-sm{min-height:2rem;padding:.35em .9em;font-size:.82rem}.btn:disabled:not([aria-busy=true]):not([data-btn-pending]):not(.btn--pending):not([data-btn-ok]):not(.btn--ok),.btn[aria-disabled=true]:not([aria-busy=true]):not([data-btn-pending]):not(.btn--pending):not([data-btn-ok]):not(.btn--ok){opacity:.55;cursor:not-allowed;pointer-events:none;transform:none;box-shadow:inset 0 1px color-mix(in srgb,#fff 20%,transparent)}.btn[aria-busy=true],.btn[data-btn-pending],.btn--pending{opacity:1;cursor:progress;pointer-events:none;transform:none;border-color:color-mix(in srgb,var(--btn-fg) 55%,var(--btn-border));box-shadow:inset 0 1px color-mix(in srgb,#fff 28%,transparent),0 0 0 3px color-mix(in srgb,var(--btn-fg) 22%,transparent),0 0 16px color-mix(in srgb,var(--btn-fg) 28%,transparent);animation:btn-pending-pulse 1.15s ease-in-out infinite}.btn[aria-busy=true]:after,.btn[data-btn-pending]:after,.btn--pending:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;pointer-events:none;background:linear-gradient(105deg,transparent 28%,color-mix(in srgb,var(--btn-fg) 22%,transparent) 48%,transparent 68%);background-size:220% 100%;animation:btn-pending-shimmer 1.1s linear infinite}.btn[data-btn-ok],.btn--ok{opacity:1;pointer-events:none;transform:none;--btn-fg: var(--success);border-color:color-mix(in srgb,var(--success) 55%,var(--btn-border));background:color-mix(in srgb,var(--success) 12%,var(--btn-bg));box-shadow:inset 0 1px color-mix(in srgb,#fff 35%,transparent),0 0 0 4px color-mix(in srgb,var(--success) 24%,transparent),0 0 18px color-mix(in srgb,var(--gold, var(--success)) 32%,transparent);animation:btn-ok-flash .65s ease-out}.btn-fx-layer{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:calc(var(--z-header, 200) + 20);overflow:visible}.btn-fx-ripple,.btn-fx-burst{position:absolute;pointer-events:none;box-sizing:border-box}.btn-fx-ripple{width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;border:2px solid color-mix(in srgb,var(--brand) 82%,#fff);background:color-mix(in srgb,var(--brand) 32%,transparent);animation:btn-fx-ripple .55s ease-out forwards}.btn-fx-burst{border:2px solid color-mix(in srgb,var(--brand) 78%,#fff);box-shadow:0 0 0 5px color-mix(in srgb,var(--brand) 20%,transparent);animation:btn-fx-burst .42s ease-out forwards}@keyframes btn-fx-ripple{0%{transform:scale(.45);opacity:.95}to{transform:scale(14);opacity:0}}@keyframes btn-fx-burst{0%{transform:scale(1);opacity:1}to{transform:scale(1.2);opacity:0}}@keyframes btn-pending-pulse{0%,to{box-shadow:inset 0 1px color-mix(in srgb,#fff 28%,transparent),0 0 0 2px color-mix(in srgb,var(--btn-fg) 18%,transparent),0 0 10px color-mix(in srgb,var(--btn-fg) 18%,transparent)}50%{box-shadow:inset 0 1px color-mix(in srgb,#fff 28%,transparent),0 0 0 6px color-mix(in srgb,var(--btn-fg) 14%,transparent),0 0 22px color-mix(in srgb,var(--btn-fg) 34%,transparent)}}@keyframes btn-pending-shimmer{0%{background-position:120% 0}to{background-position:-40% 0}}@keyframes btn-ok-flash{0%{filter:brightness(1.18);box-shadow:0 0 color-mix(in srgb,var(--success) 50%,transparent),0 0 12px color-mix(in srgb,var(--gold, var(--success)) 40%,transparent)}to{filter:none}}@media(prefers-reduced-motion:reduce){.btn{transition:none!important}.btn:hover,.btn:active,.btn:focus-visible{transform:none}.btn[aria-busy=true],.btn[data-btn-pending],.btn--pending,.btn[data-btn-ok],.btn--ok{animation:none}.btn[aria-busy=true]:after,.btn[data-btn-pending]:after,.btn--pending:after{display:none}.btn-fx-ripple,.btn-fx-burst{animation:none;display:none}}html[data-theme=dark] .btn,html[data-design=design-cyber-grid] .btn,html[data-design=design-forest-terminal] .btn,html[data-design=design-cosmic-void] .btn,html[data-design=design-noir-crypt] .btn,html[data-design=design-aurora-glass] .btn,html[data-design=design-dark-coder] .btn,html[data-design=design-matrix-code] .btn,html[data-design=design-neon-tokyo] .btn{--btn-bg: var(--bg-muted);--btn-border: color-mix(in srgb, var(--text) 28%, var(--border-strong));--btn-rim: color-mix(in srgb, #fff 8%, transparent);--btn-deep: color-mix(in srgb, #000 45%, transparent);box-shadow:inset 0 1px color-mix(in srgb,#fff 8%,transparent),inset -1px -1px 3px color-mix(in srgb,#000 25%,transparent),0 1px 2px color-mix(in srgb,#000 25%,transparent)}html[data-theme=dark] .btn-primary,html[data-design=design-cyber-grid] .btn-primary,html[data-design=design-forest-terminal] .btn-primary,html[data-design=design-cosmic-void] .btn-primary,html[data-design=design-noir-crypt] .btn-primary,html[data-design=design-aurora-glass] .btn-primary,html[data-design=design-dark-coder] .btn-primary,html[data-design=design-matrix-code] .btn-primary,html[data-design=design-neon-tokyo] .btn-primary{--btn-bg: color-mix(in srgb, var(--brand) 12%, var(--bg-muted));--btn-fg: color-mix(in srgb, var(--brand) 72%, #fff);--btn-border: color-mix(in srgb, var(--brand) 35%, var(--border-strong));--btn-deep: color-mix(in srgb, #000 40%, var(--brand))}.status-pill{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .55rem;border-radius:999px;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.status-pill--completed{background:var(--success-soft);color:var(--success)}.status-pill--in_progress{background:var(--warning-soft);color:var(--warning)}.status-pill--not_started{background:var(--bg-muted);color:var(--text-dim)}.status-pill--free{background:var(--brand-soft);color:var(--brand)}.section-kicker{display:block;width:fit-content;max-width:100%;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--brand);margin-bottom:.5rem}.page-fallback{margin:2rem auto;max-width:480px}.course-empty{display:grid;gap:1rem;justify-items:start}.course-empty__actions{display:flex;gap:.5rem;flex-wrap:wrap}.header-tools,.nav-drawer__head,.nav-drawer__label{display:none}.nav-drawer__section{display:contents}.nav-pc-badge{display:none}.nav-toggle{display:none;width:42px;height:42px;padding:0;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--bg-panel);flex-direction:column;align-items:center;justify-content:center;gap:5px;z-index:120}.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s,opacity .2s}.nav-toggle--open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.nav-toggle--open span:nth-child(2){opacity:0}.nav-toggle--open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.nav-backdrop{display:none}.nav-logout{border:none;background:transparent;color:var(--text-dim);font:inherit;font-size:.92rem;font-weight:500;cursor:pointer;padding:0}.nav-logout:hover{color:var(--brand)}.nav-auth{display:flex;align-items:center;gap:.65rem;margin-left:.35rem}.nav-auth__login{color:var(--text-dim)!important;font-weight:500!important}.nav-auth__login:hover{color:var(--brand)!important}.nav-cta{display:inline-flex!important;align-items:center;justify-content:center;min-height:2.1rem;padding:.35em .95em!important;border-radius:.5em!important;border:1.5px solid color-mix(in srgb,var(--brand) 28%,var(--border-strong))!important;background:color-mix(in srgb,var(--brand) 7%,var(--bg-panel))!important;background-image:none!important;color:var(--brand)!important;font-weight:700!important;text-shadow:none;transform:scale(1);box-shadow:inset 0 1px color-mix(in srgb,#fff 30%,transparent),inset -1px -1px 3px color-mix(in srgb,var(--brand) 10%,transparent),0 1px 2px color-mix(in srgb,var(--text) 6%,transparent);transition:box-shadow .25s ease,color .25s ease,transform .25s ease,border-color .25s ease!important}.nav-cta:hover{color:var(--brand)!important;transform:scale(.985);box-shadow:inset 0 -5px 12px -6px color-mix(in srgb,var(--text) 18%,var(--brand)),inset 0 5px 12px -6px color-mix(in srgb,var(--text) 18%,var(--brand)),0 1px 2px color-mix(in srgb,var(--text) 8%,transparent)}.nav-cta:active{transform:scale(.97);box-shadow:inset 0 -8px 10px -6px color-mix(in srgb,var(--text) 18%,var(--brand)),inset 0 8px 10px -6px color-mix(in srgb,var(--text) 18%,var(--brand)),inset 6px 0 8px -6px color-mix(in srgb,var(--text) 14%,transparent),inset -6px 0 8px -6px color-mix(in srgb,var(--text) 14%,transparent)}.user-menu{position:relative}.user-menu__trigger{display:inline-flex;align-items:center;gap:.45rem;max-width:14rem;padding:.25rem .45rem .25rem .25rem;border:1px solid var(--border);border-radius:999px;background:var(--bg-panel);color:var(--text);font:inherit;font-size:.88rem;font-weight:600;cursor:pointer}.user-menu__trigger:hover,.user-menu.is-open .user-menu__trigger{border-color:color-mix(in srgb,var(--brand) 45%,var(--border));background:var(--brand-soft);color:var(--brand)}.user-menu__avatar{width:1.85rem;height:1.85rem;display:grid;place-items:center;border-radius:999px;background:color-mix(in srgb,var(--brand) 12%,var(--bg-muted));font-size:1rem;line-height:1;flex-shrink:0}.user-menu__name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-menu__caret{font-size:.7rem;opacity:.7;margin-right:.15rem}.user-menu.is-open .user-menu__caret{transform:rotate(180deg)}.user-menu__dropdown{position:absolute;top:calc(100% + 6px);right:0;z-index:130;min-width:12rem;padding:.35rem;border:1px solid var(--border);border-radius:10px;background:var(--bg-panel);box-shadow:0 10px 28px color-mix(in srgb,#000 14%,transparent);display:grid;gap:.15rem}.user-menu__item{display:block;width:100%;padding:.55rem .7rem;border:none;border-radius:7px;background:transparent;color:var(--text);font:inherit;font-size:.88rem;font-weight:500;text-align:left;text-decoration:none;cursor:pointer}.user-menu__item:hover{background:var(--brand-soft);color:var(--brand)}.user-menu__item--danger{color:#b91c1c}.user-menu__item--danger:hover{background:color-mix(in srgb,#dc2626 12%,transparent);color:#b91c1c}@media(max-width:1024px){.app-header{padding:.75rem 1rem;padding-top:calc(.75rem + var(--safe-top));padding-left:calc(1rem + var(--safe-left));padding-right:calc(1rem + var(--safe-right))}.app-main{padding:1rem 1rem 2.25rem;padding-left:calc(1rem + var(--safe-left));padding-right:calc(1rem + var(--safe-right));padding-bottom:calc(2.25rem + var(--safe-bottom));min-width:0}.app-main:has(.learn-tree-burger){padding-left:calc(3.35rem + var(--safe-left))}.nav-tip{display:none}.header-tools{display:flex;align-items:center;gap:.4rem;margin-left:auto;z-index:120}.nav-toggle{display:inline-flex;min-width:var(--touch-min);min-height:var(--touch-min);border-radius:.75rem;background:linear-gradient(145deg,color-mix(in srgb,var(--brand) 12%,var(--bg-panel)),var(--bg-panel));box-shadow:inset 0 1px color-mix(in srgb,#fff 35%,transparent),0 1px 3px color-mix(in srgb,var(--text) 8%,transparent)}.nav-toggle--open{border-color:color-mix(in srgb,var(--brand) 40%,var(--border-strong))}.nav-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;border:none;background:color-mix(in srgb,#0f172a 45%,transparent);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:110}.nav-links{position:fixed;top:0;right:0;left:auto;width:min(22rem,calc(100dvw - 1.25rem));max-width:100%;height:100dvh;margin:0;padding:calc(1.1rem + var(--safe-top)) calc(1.15rem + var(--safe-right)) calc(1.5rem + var(--safe-bottom)) 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42%,var(--bg-panel))}.nav-drawer__section:first-of-type{margin-top:.35rem}.nav-drawer__section--auth{margin-top:auto}.nav-drawer__head{display:block;padding:.35rem .55rem .85rem;margin-bottom:.15rem}.nav-drawer__brand{margin:0;font-family:var(--font-display, inherit);font-size:1.15rem;font-weight:800;letter-spacing:.02em;color:var(--text)}.nav-drawer__tag{margin:.2rem 0 0;font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brand)}.nav-drawer__label{display:block;margin:0 0 .25rem;padding:0 .55rem;font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--text-dim)}.nav-pc-badge{display:inline-flex;align-items:center;margin-left:auto;padding:.15rem .45rem;border-radius:999px;border:1px solid color-mix(in srgb,var(--brand) 28%,var(--border));background:color-mix(in srgb,var(--brand) 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