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heroReveal{0%{opacity:0;transform:scale(.96)translateY(24px)}to{opacity:1;transform:scale(1)translateY(0)}}.hero-split__left.portal-open{opacity:0;visibility:hidden;pointer-events:none;transform:perspective(1200px)translate3d(-115%,0,-200px)rotateY(32deg);-webkit-backdrop-filter:none!important}.hero-split__right.portal-open{opacity:0;visibility:hidden;pointer-events:none;transform:perspective(1200px)translate3d(115%,0,-200px)rotateY(-32deg);-webkit-backdrop-filter:none!important}.hero-split.portal-open,.hero-wrapper.portal-open{visibility:hidden;pointer-events:none!important}.hero-split__left{border-radius:var(--radius-xl) 0 0 var(--radius-xl);background:var(--slab-bg);-webkit-backdrop-filter:var(--slab-filter);backdrop-filter:var(--slab-filter);border:1px solid var(--glass-line);border-right:1px solid rgba(var(--ink-rgb), .05);box-shadow:inset 0 1px 0 var(--glass-rim), 0 24px 60px rgba(var(--shadow-rgb), calc(.45 * var(--shadow-k)));flex-direction:column;flex:1;padding:36px 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var(--font-body);white-space:normal;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin:0;display:inline-flex}.home-footer__brand{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.015em;color:#fff;align-items:center;font-size:1.08rem;font-weight:700;line-height:1;display:inline-flex}.home-footer__brand span{color:var(--accent,#00e5b4)}.home-footer__dash{color:#ffffff73;align-items:center;line-height:1;display:inline-flex}.home-footer__sep{color:#ffffff59;-webkit-user-select:none;user-select:none;align-items:center;font-weight:700;line-height:1;display:inline-flex}.home-footer p em{color:#fff;font-style:italic}.home-footer__link{font:inherit;font-size:inherit;color:var(--accent,#00e5b4);text-underline-offset:3px;cursor:pointer;vertical-align:baseline;background:0 0;border:none;align-items:center;margin:0;padding:0;font-family:inherit;line-height:1;text-decoration:underline;transition:opacity .15s;display:inline-flex}.home-footer__link:hover{opacity:.85}.home-footer__link:focus-visible{outline:2px solid var(--accent,#00e5b4);outline-offset:2px;border-radius:2px}@media (width<=900px){.hero-split{flex-direction:column;height:auto;min-height:0;max-height:none}.hero-split__left{border-right:1px solid var(--glass-line);border-bottom:1px solid rgba(var(--ink-rgb), .06);border-radius:var(--radius-xl) var(--radius-xl) 0 0;flex:none;min-height:260px;padding:28px 24px}.hero-split__right{border-left:1px solid var(--glass-line);border-radius:0 0 var(--radius-xl) var(--radius-xl);border-top:none;flex:none;height:min(46vh,340px);min-height:260px}.hero-wrapper{height:auto;padding-top:96px;position:relative}.catalog-reveal{margin-top:0;padding-top:0}}@media (width<=768px){.hero-split{width:calc(100vw - 24px)}.hero-split__left{padding:24px 20px}.hero-ai__heading h1{font-size:1.35rem}.catalog-header{padding:40px var(--space-md) 24px}.catalog-header__title{font-size:1.8rem}.home-search{padding:0 var(--space-md)}.home-section{padding:0 var(--space-md) 24px}.section-header{margin-bottom:var(--space-md);flex-wrap:wrap}.section-header__title{font-size:1.1rem}.sim-grid{gap:var(--space-md);grid-template-columns:1fr}.sim-card{min-height:120px}.idea-lab-card{padding:var(--space-lg) var(--space-md)}.scroll-indicator{padding:7px 16px;font-size:.72rem;bottom:20px}.home-footer{border-radius:20px;margin:20px auto 16px;padding:10px 16px}}.psi-theater-overlay{--psi-bg:#070a10;--psi-surface:var(--sp-bg-reading);--psi-surface-2:#131a26;--psi-line:#94aacd21;--psi-line-strong:#94aacd42;--psi-text:#e9eef6;--psi-text-2:#a3afc2;--psi-text-3:#7d8aa3;--psi-accent:#8cc8ff;--psi-violet:#b7a6ff;--psi-danger:#ff8a8a;--psi-font-ui:inherit;--psi-font-read:"Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;--psi-font-mono:var(--font-mono);--psi-col:44rem;--psi-gutter:clamp(16px, 4vw, 32px);--psi-ease:cubic-bezier(.22, 1, .36, 1);--lightningcss-light: ;--lightningcss-dark:initial;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;z-index:99999;background-color:var(--void-hex-l,#03060b);color:var(--psi-text);font-family:var(--psi-font-ui);-webkit-font-smoothing:antialiased;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s var(--psi-ease), visibility 0s linear .3s;justify-content:center;display:flex;position:fixed;inset:0;overflow:hidden}@supports (height:100dvh){.psi-theater-overlay{height:100dvh;bottom:auto}}.psi-theater-overlay--open{opacity:1;visibility:visible;pointer-events:auto;transition-delay:0s}.psi-theater__scenery{filter:blur(22px)brightness(.88)contrast(1.06)saturate(1.18);transition:transform .8s var(--psi-ease), filter .8s ease;z-index:0;pointer-events:none;background-image:radial-gradient(90% 60% at 50% 18%,#8cc8ff29,#0000 70%),url(/psi_mountain_planet.jpg);background-position:50% 36%;background-repeat:no-repeat;background-size:cover;position:absolute;inset:0;transform:scale(1.08)}.psi-theater-overlay--open .psi-theater__scenery{transform:scale(1.04)}.psi-theater-overlay ::selection{background:#8cc8ff47}.psi-theater-overlay :focus-visible:not(.psi-theater__input):not(.hero-search__input){outline:2px solid var(--psi-accent);outline-offset:2px}.psi-theater-container{z-index:1;background:rgba(var(--panel-l,6, 10, 18), .48);-webkit-backdrop-filter:blur(28px)saturate(175%);backdrop-filter:blur(28px)saturate(175%);width:100%;height:100%;transition:transform .5s var(--psi-ease);outline:none;flex-direction:column;display:flex;position:relative;transform:translateY(10px)}.psi-theater-overlay--open .psi-theater-container{transform:none}.psi-sr{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.psi-theater__header{height:56px;padding:0 var(--psi-gutter);border-bottom:1px solid var(--psi-line);flex:none;justify-content:space-between;align-items:center;gap:12px;display:flex}.psi-theater__brand{align-items:center;gap:8px;min-width:0;display:flex}.psi-theater__avatar{cursor:pointer;background:0 0;border:0;border-radius:12px;flex:none;place-items:center;width:40px;height:40px;margin-left:-6px;padding:0;transition:background .2s;display:grid}.psi-theater__avatar:hover{background:rgba(var(--ink-rgb), .05)}.psi-theater__identity{flex-direction:column;gap:2px;min-width:0;line-height:1.15;display:flex}.psi-theater__name{letter-spacing:-.005em;font-size:.95rem;font-weight:600}.psi-theater__caption{color:var(--psi-text-3);align-items:center;gap:7px;font-size:.76rem;display:flex}.psi-theater__dot{background:var(--psi-text-3);border-radius:50%;flex:none;width:6px;height:6px;transition:background .3s}.psi-theater-overlay[data-state=thinking] .psi-theater__dot{background:var(--psi-accent);animation:1.4s ease-in-out infinite psiDotPulse}.psi-theater-overlay[data-state=speaking] .psi-theater__dot{background:var(--psi-accent)}.psi-theater__caption-text{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.psi-theater__caption-text.is-new{animation:psiCaptionIn .35s var(--psi-ease)}.psi-theater__close-btn{border:1px solid rgba(var(--ink-rgb), .22);background:rgba(var(--ink-rgb), .1);height:34px;color:var(--text-l,#fff);font:inherit;letter-spacing:-.01em;cursor:pointer;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 2px 10px rgba(var(--shadow-rgb), calc(.3 * var(--shadow-k)));border-radius:9999px;flex:none;justify-content:center;align-items:center;padding:0 16px;font-size:.84rem;font-weight:500;transition:background .2s,border-color .2s,transform .2s,box-shadow .2s;display:inline-flex}.psi-theater__close-btn:hover{background:rgba(var(--ink-rgb), .2);border-color:rgba(var(--ink-rgb), .45);color:var(--text-l,#fff);box-shadow:0 4px 16px rgba(var(--shadow-rgb), calc(.4 * var(--shadow-k)));transform:translateY(-1px)}.psi-theater__kbd{display:none}.psi-theater__scroll{overscroll-behavior:contain;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:#94aacd38 transparent;flex:1;min-height:0;overflow-y:auto}.psi-theater__scroll::-webkit-scrollbar{width:8px}.psi-theater__scroll::-webkit-scrollbar-thumb{background:#94aacd33;border-radius:8px}.psi-theater__column{box-sizing:border-box;width:100%;max-width:var(--psi-col);padding:clamp(24px, 8vh, 72px) var(--psi-gutter) 40px;transition:padding-top .5s var(--psi-ease);margin:0 auto}.psi-theater-overlay[data-started] .psi-theater__column{padding-top:28px}.psi-welcome{transition:grid-template-rows .5s var(--psi-ease), opacity .35s ease;grid-template-rows:1fr;display:grid}.psi-welcome__inner{min-height:0;overflow:hidden}.psi-welcome.is-collapsed{opacity:0;pointer-events:none;grid-template-rows:0fr}.psi-wavepacket{clip-path:inset(0 100% 0 0);width:100%;height:64px;animation:psiReveal 1.6s .15s var(--psi-ease) forwards;margin-bottom:clamp(18px,3vh,28px);display:block;-webkit-mask-image:linear-gradient(90deg,#0000,#000 18% 82%,#0000);mask-image:linear-gradient(90deg,#0000,#000 18% 82%,#0000)}.psi-wavepacket__axis{stroke:var(--psi-line);stroke-width:1px}.psi-wavepacket__env{fill:var(--psi-accent);fill-opacity:.07;stroke:none}.psi-wavepacket__wave{fill:none;stroke:var(--psi-accent);stroke-width:1.4px;stroke-linecap:round;stroke-linejoin:round}.psi-welcome__title{font-family:var(--psi-font-read);letter-spacing:-.02em;color:var(--psi-text);opacity:0;animation:psiRise .7s .3s var(--psi-ease) forwards;margin:0;font-size:clamp(1.75rem,1.2rem + 2.4vw,2.5rem);font-weight:400;line-height:1.15}.psi-welcome__title span{color:var(--psi-text-3);display:block}.psi-welcome__body{max-width:34rem;color:var(--psi-text-2);opacity:0;animation:psiRise .7s .42s var(--psi-ease) forwards;margin:14px 0 0;font-size:.98rem;line-height:1.6}.psi-suggest-grid{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:32px;margin-top:clamp(24px,5vh,40px);display:grid}.psi-suggest{border:0;border-top:1px solid var(--psi-line);width:100%;color:inherit;font:inherit;text-align:left;cursor:pointer;opacity:0;animation:psiRise .6s calc(.55s + var(--i,0) * 70ms) var(--psi-ease) forwards;background:0 0;grid-template-columns:1fr auto;align-items:start;gap:3px 12px;padding:14px 2px 16px;transition:border-color .25s;display:grid}.psi-suggest:focus-visible{outline-offset:-2px;border-radius:6px}.psi-suggest__tag{color:var(--psi-text-3);grid-column:1;font-size:.76rem;font-weight:500;transition:color .2s}.psi-suggest__q{color:var(--psi-text-2);grid-column:1;font-size:.96rem;line-height:1.45;transition:color .2s}.psi-suggest__arrow{color:var(--psi-text-3);opacity:0;transition:opacity .2s ease, transform .3s var(--psi-ease), color .2s ease;grid-area:1/2/span 2;align-self:center;transform:translate(-4px)}.psi-suggest:hover,.psi-suggest:focus-visible{border-top-color:var(--psi-line-strong)}.psi-suggest:hover .psi-suggest__q,.psi-suggest:focus-visible .psi-suggest__q{color:var(--psi-text)}.psi-suggest:hover .psi-suggest__tag,.psi-suggest:focus-visible .psi-suggest__tag{color:var(--psi-accent)}.psi-suggest:hover .psi-suggest__arrow,.psi-suggest:focus-visible .psi-suggest__arrow{opacity:1;color:var(--psi-accent);transform:none}@media (hover:none){.psi-suggest__arrow{opacity:.6;transform:none}}.psi-theater__messages{flex-direction:column;display:flex}.psi-msg{animation:psiMsgIn .32s var(--psi-ease) both}.psi-msg--user{background:var(--psi-surface-2);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:18px 18px 6px;align-self:flex-end;max-width:min(82%,32rem);margin:0 0 20px;padding:10px 16px;font-size:.96rem;line-height:1.55}.psi-msg--ai{grid-template-columns:28px minmax(0,1fr);column-gap:16px;margin:0 0 36px;display:grid}.psi-msg--ai:last-child{margin-bottom:0}.psi-msg__rail{flex-direction:column;align-items:center;gap:8px;padding-top:1px;display:flex}.psi-msg__mark{width:28px;height:28px;font-family:var(--psi-font-read);color:var(--psi-violet);transition:background .2s ease, transform .2s var(--psi-ease);border-radius:8px;flex:none;justify-content:center;align-items:center;font-size:1.35rem;line-height:1.4;display:flex}.psi-msg__mark.is-interactive{cursor:pointer}.psi-msg__mark.is-interactive:hover{background:rgba(var(--ink-rgb), .08);transform:scale(1.1)}.psi-msg__rule{background:linear-gradient(to bottom, var(--psi-line-strong), transparent);flex:1;width:1px}.psi-msg__content{min-width:0}.psi-thinking{font-family:var(--psi-font-ui);color:var(--psi-text-3);align-items:center;gap:10px;font-size:.88rem;line-height:29px;display:inline-flex}.psi-thinking__text{transition:opacity .25s;display:inline-block}.psi-thinking__text.is-new{animation:psiCaptionIn .35s var(--psi-ease)}.psi-wave{flex:none;display:block;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,#0000,#000 25% 75%,#0000);mask-image:linear-gradient(90deg,#0000,#000 25% 75%,#0000)}.psi-wave path{fill:none;stroke:var(--psi-accent);stroke-width:1.5px;stroke-linecap:round;animation:1.3s linear infinite psiWave}.psi-prose{font-family:var(--psi-font-read);color:var(--psi-text);overflow-wrap:break-word;font-size:1.0625rem;line-height:1.72}.psi-prose.is-streaming>:last-child:after{content:"";vertical-align:-.15em;background:var(--psi-accent);width:2px;height:1.05em;margin-left:2px;animation:1s step-end infinite psiCaret;display:inline-block}.psi-prose>:first-child{margin-top:0}.psi-prose>:last-child{margin-bottom:0}.psi-prose p{margin:0 0 1em}.psi-prose strong{color:var(--text-l,#fff);font-weight:600}.psi-prose em{font-style:italic}.psi-prose a{color:var(--psi-accent);text-underline-offset:3px;-webkit-text-decoration:underline #8cc8ff66;text-decoration:underline #8cc8ff66}.psi-prose a:hover{-webkit-text-decoration-color:var(--psi-accent);text-decoration-color:var(--psi-accent)}.psi-prose h1,.psi-prose h2,.psi-prose h3,.psi-prose h4{letter-spacing:-.01em;margin:1.6em 0 .5em;font-weight:600;line-height:1.3}.psi-prose h1{font-size:1.35rem}.psi-prose h2{font-size:1.22rem}.psi-prose h3{font-size:1.1rem}.psi-prose h4{color:var(--psi-text-2);font-size:1rem}.psi-prose ul,.psi-prose ol{margin:0 0 1em;padding-left:1.4em}.psi-prose li{margin:.35em 0;padding-left:.2em}.psi-prose li::marker{color:var(--psi-text-3)}.psi-prose code{color:var(--blue-l,#cfe6ff);font-family:var(--psi-font-mono);background:#8cc8ff17;border-radius:5px;padding:.12em .4em;font-size:.86em}.psi-prose pre{border:1px solid var(--psi-line);background:var(--raised-l,#0a0f17);border-radius:12px;margin:1.2em 0;padding:14px 16px;font-size:.85rem;line-height:1.6;overflow-x:auto}.psi-prose pre code{color:var(--psi-text);font-size:inherit;background:0 0;padding:0}.psi-prose blockquote{color:var(--psi-text-2);border-left:2px solid #b7a6ff73;margin:1.2em 0;padding-left:1em}.psi-prose hr{border:0;border-top:1px solid var(--psi-line);margin:1.8em 0}.psi-prose table{border-collapse:collapse;max-width:100%;font-family:var(--psi-font-ui);margin:1.2em 0;font-size:.92rem;display:block;overflow-x:auto}.psi-prose th,.psi-prose td{border-bottom:1px solid var(--psi-line);text-align:left;padding:.5em .9em}.psi-prose th{color:var(--psi-text-2);font-weight:600}.psi-prose .katex{font-size:1.06em}.psi-prose .katex-display,.psi-prose mjx-container[display=true]{max-width:100%;margin:1.1em 0;padding:.3em 0;overflow:auto hidden}.psi-sims{max-width:30rem;margin-top:22px}.psi-sims__title{color:var(--psi-text-3);margin-bottom:4px;font-size:.78rem}.psi-sims__list{margin:0;padding:0;list-style:none}.psi-sims__btn{border:0;border-top:1px solid var(--psi-line);width:100%;color:var(--psi-text);font:inherit;text-align:left;cursor:pointer;background:0 0;justify-content:space-between;align-items:center;gap:16px;padding:11px 2px;font-size:.92rem;transition:border-color .25s;display:flex}.psi-sims__list li:last-child .psi-sims__btn{border-bottom:1px solid var(--psi-line)}.psi-sims__btn:focus-visible{outline-offset:-2px;border-radius:6px}.psi-sims__btn:hover{border-top-color:var(--psi-line-strong)}.psi-sims__go{white-space:nowrap;color:var(--psi-accent);align-items:center;gap:6px;font-size:.82rem;display:inline-flex}.psi-sims__go svg{transition:transform .25s var(--psi-ease)}.psi-sims__btn:hover .psi-sims__go svg,.psi-sims__btn:focus-visible .psi-sims__go svg{transform:translate(3px)}.psi-error{font-family:var(--psi-font-ui);color:var(--psi-danger);margin:0;font-size:.95rem;line-height:1.6}.psi-error__retry{color:var(--psi-accent);font:inherit;text-underline-offset:3px;cursor:pointer;background:0 0;border:0;padding:0;text-decoration:underline}.psi-theater__footer{padding:0 var(--psi-gutter) max(14px, env(safe-area-inset-bottom));flex:none;position:relative}.psi-theater__footer:before{content:"";background:linear-gradient(to top, var(--psi-bg), transparent);pointer-events:none;height:32px;position:absolute;bottom:100%;left:0;right:0}.psi-theater__input-bar{box-sizing:border-box;width:100%;max-width:var(--psi-col);border:1px solid rgba(var(--ink-rgb), .18);-webkit-backdrop-filter:blur(24px)saturate(180%);backdrop-filter:blur(24px)saturate(180%);box-shadow:inset 0 1px 0 #ffffff24, 0 8px 32px rgba(var(--shadow-rgb), calc(.4 * var(--shadow-k)));background:#0c111b9e;border-radius:9999px;align-items:flex-end;gap:8px;margin:0 auto;padding:8px 10px 8px 24px;transition:border-color .25s,box-shadow .25s,background .25s;display:flex}.psi-theater__input-bar:focus-within{background:rgba(var(--panel-l,15, 22, 34), .78);box-shadow:inset 0 1px 0 #ffffff38, 0 0 0 4px #8cc8ff2e, 0 12px 36px rgba(var(--shadow-rgb), calc(.5 * var(--shadow-k)));border-color:#8cc8ffa6}.psi-theater__input{resize:none;min-width:0;max-height:168px;caret-color:var(--psi-accent);color:var(--psi-text);font:inherit;flex:1;padding:8px 0;font-size:1rem;line-height:1.5;box-shadow:none!important;background:0 0!important;border:0!important;outline:none!important}.psi-theater__input:focus,.psi-theater__input:focus-visible{box-shadow:none!important;border:none!important;outline:none!important}.psi-theater__input::placeholder{color:var(--psi-text-3)}.psi-theater__mic-btn,.psi-theater__send-btn{cursor:pointer;width:40px;height:40px;transition:background .2s ease, color .2s ease, transform .2s var(--psi-ease), filter .2s ease, opacity .2s ease;border:0;border-radius:50%;flex:none;place-items:center;padding:0;display:grid}.psi-theater__mic-btn{color:var(--text-l,#f1f5f9);opacity:.9;background:0 0}.psi-theater__mic-btn svg{width:18px;height:18px}.psi-theater__mic-btn:hover{background:rgba(var(--ink-rgb), 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16px}.email-dialog__submit:disabled{opacity:.6;cursor:wait}.email-dialog__submit:focus-visible{outline-offset:2px;outline:2px solid #fff}.email-dialog__cancel{border:1px solid var(--glass-line);background:rgba(var(--ink-rgb), .05);color:var(--text-primary);font:600 .95rem var(--font-primary);cursor:pointer;border-radius:10px;margin-top:4px;padding:11px 16px;transition:background .2s,border-color .2s}.email-dialog__cancel:hover{background:rgba(var(--ink-rgb), .1);border-color:rgba(var(--ink-rgb), .25)}.email-dialog__cancel:focus-visible{outline-offset:2px;outline:2px solid #fff}.confirm-dialog__actions{gap:10px;margin-top:12px;display:flex}.confirm-dialog__actions>button{flex:1}.email-dialog__fine{color:var(--text-muted);margin:4px 0 0;font-size:.75rem;line-height:1.45}.email-dialog__done-view{text-align:center}.email-dialog__done-icon{width:44px;height:44px;color:var(--accent-secondary);margin:0 auto 12px}.email-dialog__done-view .email-dialog__submit{width:100%}.confirm-page{place-items:center;min-height:100vh;padding:96px 16px 24px;display:grid}.confirm-card{border-radius:var(--radius-lg);text-align:center;width:min(480px,100%);padding:32px 28px}.confirm-card__mark{background:var(--text-muted);border-radius:50%;width:14px;height:14px;margin:0 auto 16px}.confirm-card[data-outcome=ok] .confirm-card__mark{background:var(--accent-success);box-shadow:0 0 0 6px #56c95f26}.confirm-card[data-outcome=info] .confirm-card__mark{background:var(--accent-warning);box-shadow:0 0 0 6px #ffab4026}.confirm-card[data-outcome=error] .confirm-card__mark{background:var(--accent-danger);box-shadow:0 0 0 6px #ff525226}.confirm-card__title{text-wrap:balance;margin:0 0 10px;font-size:1.4rem}.confirm-card__body{max-width:42ch;color:var(--text-secondary);margin:0 auto;line-height:1.55}.confirm-card__actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px;display:flex}@media (width<=520px){.lb-row{flex-wrap:wrap;row-gap:8px}.lb-row__info{flex:calc(100% - 50px)}.lb-row__topic{white-space:normal;text-overflow:clip;overflow:visible}.lb-row__count{margin-left:46px}.lb-support{margin-left:auto}.lb-poll__countdown{font-size:1.15rem}}@media (prefers-reduced-motion:reduce){.lb-row{animation:none}}.ab{--ab-top:92px;--ab-body:#c5cfdc;--ab-ease:cubic-bezier(.22, .8, .24, 1);flex-direction:column;gap:clamp(40px,9vh,96px);max-width:1180px;display:flex}.ab-kicker{font:600 .76rem/1 var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--accent)}.ab-h2{font-family:var(--font-display);letter-spacing:-.02em;color:var(--text);text-wrap:balance;font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:600;line-height:1.1}.ab [data-reveal]{opacity:0;transition:opacity .7s var(--ab-ease), transform .7s var(--ab-ease);transition-delay:calc(var(--d,0) * 90ms);transform:translateY(18px)}.ab [data-reveal].is-in{opacity:1;transform:none}.ab-hero{border-radius:var(--radius-xl);flex-direction:column;gap:22px;padding:clamp(36px,7vw,84px) clamp(24px,6vw,76px) clamp(32px,5vw,56px);display:flex;position:relative;overflow:hidden}.ab-hero:after{content:"";background:linear-gradient(90deg, transparent, rgba(var(--teal-rgb), .55), transparent);height:1px;position:absolute;inset:auto 0 0}.ab-hero__title{max-width:14ch;font-family:var(--font-display);letter-spacing:-.035em;color:var(--text);text-wrap:balance;font-size:clamp(2.6rem,7.2vw,5.4rem);font-weight:600;line-height:.98}.ab-hero__title em{color:var(--accent);font-style:italic}.ab-hero__lede{max-width:56ch;font-family:var(--font-serif);color:var(--ab-body);font-size:clamp(1.08rem,1.5vw,1.28rem);line-height:1.6}.ab-actions{flex-wrap:wrap;gap:12px;margin-top:6px;display:flex}.ab-btn{border-radius:var(--radius-full);font:600 .95rem var(--font-body);color:var(--accent-ink);background:var(--accent);border:1px solid var(--accent-hi);box-shadow:0 4px 18px rgba(var(--teal-rgb), .3);transition:transform .25s var(--ab-ease), box-shadow .25s, background .25s, border-color .25s;justify-content:center;align-items:center;padding:12px 26px;text-decoration:none;display:inline-flex}.ab-btn:hover{background:var(--accent-hi);box-shadow:0 8px 26px rgba(var(--teal-rgb), .45);transform:translateY(-2px)}.ab-btn--ghost{color:var(--text);background:rgba(var(--ink-rgb), .04);border-color:var(--glass-line);box-shadow:none}.ab-btn--ghost:hover{background:rgba(var(--ink-rgb), .09);border-color:rgba(var(--ink-rgb), .24);box-shadow:none}.ab-btn:focus-visible,.ab-contact__mail:focus-visible,.ab-contact__copy:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.ab-hero__cue{font:600 .72rem/1 var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--text-2);align-items:center;gap:12px;margin-top:clamp(12px,3vw,32px);display:flex}.ab-hero__cue-line{background:rgba(var(--ink-rgb), .16);width:56px;height:1px;position:relative;overflow:hidden}.ab-hero__cue-line:after{content:"";background:var(--accent);animation:abCue 2.2s var(--ab-ease) infinite;position:absolute;inset:0}@keyframes abCue{0%{transform:translate(-100%)}60%,to{transform:translate(100%)}}.ab-chapter__slab{border-radius:var(--radius-xl);opacity:0;width:100%;transition:opacity .8s var(--ab-ease), transform .8s var(--ab-ease);flex-direction:column;gap:clamp(18px,3vh,30px);padding:clamp(22px,3.4vw,44px);display:flex;transform:translateY(26px)scale(.985)}.ab-chapter__slab.is-in{opacity:1;transform:none}.ab-chapter__head{grid-template-columns:auto 1fr auto;align-items:end;gap:clamp(14px,2.6vw,34px);display:grid}.ab-chapter__num{font-family:var(--font-display);letter-spacing:-.04em;color:#0000;-webkit-text-stroke:1px rgba(var(--teal-rgb), 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.5s var(--ab-ease), border-color .5s, box-shadow .5s, opacity .5s;flex-direction:column;gap:10px;padding:26px 24px 28px;display:flex;position:relative}.ab-card__n{font-family:var(--font-display);letter-spacing:-.03em;color:rgba(var(--ink-rgb), .16);font-size:2.6rem;font-weight:600;line-height:1;transition:color .5s}.ab-card__label{font:600 .72rem/1.2 var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--accent);margin-top:6px}.ab-card__title{font-family:var(--font-display);letter-spacing:-.015em;color:var(--text);font-size:1.42rem;font-weight:600;line-height:1.15}.ab-card__body{font-family:var(--font-serif);color:var(--ab-body);font-size:1.02rem;line-height:1.6}.ab-progress{background:rgba(var(--ink-rgb), .1);border-radius:2px;height:2px;display:none;overflow:hidden}.ab-progress__fill{background:linear-gradient(90deg, var(--accent), var(--accent-hi));transform-origin:0;height:100%;display:block;transform:scaleX(0)}.ab-chapter[data-dir=ltr] .ab-progress__fill{transform-origin:100%}.ab--pinned .ab-chapter__pin{top:var(--ab-top);height:calc(100vh - var(--ab-top) - 20px);height:calc(100svh - var(--ab-top) - 20px);align-items:center;display:flex;position:sticky}.ab--pinned .ab-chapter__slab{max-height:100%}.ab--pinned .ab-chapter__count{display:flex}.ab--pinned .ab-progress{display:block}.ab--pinned .ab-chapter__viewport{margin-inline:calc(-1*clamp(22px,3.4vw,44px));padding-block:10px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,#0000,#000 clamp(22px,3.4vw,44px) calc(100% - clamp(22px,3.4vw,44px)),#0000);mask-image:linear-gradient(90deg,#0000,#000 clamp(22px,3.4vw,44px) calc(100% - clamp(22px,3.4vw,44px)),#0000)}.ab--pinned .ab-track{will-change:transform;gap:20px;width:max-content;padding-inline:clamp(22px,3.4vw,44px);display:flex}.ab--pinned .ab-chapter[data-dir=ltr] .ab-track{flex-direction:row-reverse}.ab--pinned .ab-card{opacity:.5;flex:none;width:clamp(280px,29vw,372px);min-height:clamp(230px,34vh,300px);transform:scale(.965)}.ab--pinned .ab-card.is-focus{opacity:1;border-color:rgba(var(--teal-rgb), .42);box-shadow:inset 0 1px 0 rgba(var(--teal-hi-rgb), .5), 0 22px 50px rgba(var(--shadow-rgb), calc(.45 * var(--shadow-k))), 0 0 44px rgba(var(--teal-rgb), .1);transform:none}.ab--pinned .ab-card.is-focus .ab-card__n{color:var(--accent)}.ab-accent{color:var(--accent);font-style:normal}.ab-story,.ab-team,.ab-contact{border-radius:var(--radius-xl);padding:clamp(28px,5vw,64px)}.ab-story{flex-direction:column;gap:18px;display:flex}.ab-story__cols{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:clamp(16px,3vw,40px);margin-top:6px;display:grid}.ab-story__cols p{font-family:var(--font-serif);color:var(--ab-body);font-size:1.1rem;line-height:1.7}.ab-story__cols{align-items:center}.ab-nobel{border-radius:var(--radius-lg);border:1px solid var(--glass-line);border-left:2px solid var(--accent);background:linear-gradient(120deg, rgba(var(--teal-rgb), .09), rgba(var(--ink-rgb), .02) 60%);flex-direction:column;gap:12px;padding:22px 24px 22px 26px;display:flex}.ab-nobel__label{font:600 .74rem/1.2 var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--accent)}.ab-nobel__quote{font-family:var(--font-display);color:var(--text);font-size:clamp(1.15rem,1.7vw,1.42rem);font-style:italic;line-height:1.38}.ab-nobel__cite{font:500 .88rem/1.4 var(--font-body);color:var(--ab-body)}.ab-story__punch{margin-top:clamp(14px,2.5vw,28px);text-align:center;max-width:36ch;font-family:var(--font-display);letter-spacing:-.02em;color:var(--text);text-wrap:balance;margin-inline:auto;font-size:clamp(1.45rem,2.9vw,2.15rem);font-weight:600;line-height:1.25}.ab-story__punch em{color:var(--accent);font-style:italic}.ab-story__body{text-align:center;max-width:58ch;font-family:var(--font-serif);color:var(--ab-body);margin-inline:auto;font-size:1.1rem;line-height:1.7}.ab-story__quote{border-top:1px solid var(--glass-line);text-align:center;font-family:var(--font-display);letter-spacing:-.02em;color:var(--text);text-wrap:balance;margin-top:clamp(14px,2.5vw,26px);padding-top:clamp(18px,3vw,32px);font-size:clamp(1.5rem,3.6vw,2.7rem);font-style:italic;font-weight:500;line-height:1.15}.ab-team{flex-direction:column;gap:14px;display:flex}.ab-tri{margin-top:clamp(22px,4vw,44px);padding-block:12px;position:relative}.ab-tri__lines{pointer-events:none;opacity:0;width:100%;height:100%;transition:opacity 1.2s var(--ab-ease) .4s;position:absolute;inset:0;overflow:visible}.ab-tri.is-in .ab-tri__lines,.ab-tri.is-in .ab-tri__hub{opacity:1}.ab-tri__edge,.ab-tri__spoke{fill:none;stroke:rgba(var(--teal-rgb), .34);stroke-width:1px;stroke-dasharray:4 8;transition:stroke 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.4)}.ab-tri__grid{z-index:2;grid-template-columns:1fr 1fr;justify-items:center;gap:clamp(64px,9vw,112px) clamp(120px,22vw,300px);list-style:none;display:grid;position:relative}.ab-member{width:min(100%,290px);transition:opacity .7s var(--ab-ease), transform .7s var(--ab-ease), filter .4s}.ab-member--apex{grid-column:1/-1;width:min(100%,330px)}.ab-member--left{--d:1}.ab-member--right{--d:2}.ab-member.is-dim{filter:saturate(.5)brightness(.72)}.ab-member__card{text-align:center;border-radius:var(--radius-lg);background:linear-gradient(180deg, rgba(var(--ink-rgb), .06), rgba(var(--ink-rgb), .02)), #0a0f19;border:1px solid var(--glass-line);box-shadow:inset 0 1px 0 var(--glass-rim), 0 18px 44px rgba(var(--shadow-rgb), calc(.4 * var(--shadow-k)));cursor:default;will-change:transform;outline:none;flex-direction:column;align-items:center;gap:8px;padding:28px 24px 26px;transition:border-color .4s,box-shadow .4s;display:flex}.ab-member--apex .ab-member__card{border-color:rgba(var(--teal-rgb), 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.16);box-shadow:none}.sim-feedback-btn{color:var(--text-2,#c0c6d4);box-shadow:none;cursor:pointer;background:#ffffff0d;border-color:#ffffff24}.sim-feedback-btn:hover{color:var(--text-1,#fff);box-shadow:none;background:#ffffff1a;border-color:#ffffff40}.lesson-bar__sound{border-radius:var(--radius-full);background:rgba(var(--ink-rgb), .04);border:1px solid var(--glass-line);color:var(--text-2);font:600 .78rem/1 var(--font-body);cursor:pointer;white-space:nowrap;align-items:center;gap:6px;padding:5px 12px;transition:background .2s,color .2s,border-color .2s;display:inline-flex}.lesson-bar__sound:hover{background:rgba(var(--ink-rgb), .09);color:var(--text)}.lesson-bar__sound.is-on{color:var(--teal-200);border-color:rgba(var(--teal-rgb), .35)}.lesson-bar__sound:focus-visible,.lessons-pill:focus-visible{outline:2px solid var(--sp-focus-ring);outline-offset:2px}.sim-page.is-lesson{grid-template-columns:1fr minmax(360px,420px)}.sim-topbar.is-lesson>:not(.lesson-bar),.sim-controls.is-lesson>:not(.lesson-panel),.sim-page.is-lesson .sim-drawer-tab,.sim-page.is-lesson .sim-drawer-backdrop{display:none!important}.sim-controls.is-lesson{background:var(--sp-bg-reading);border-left:1px solid var(--sp-border-hairline)}.lesson-bar{border-radius:var(--radius-full);background:var(--slab-bg);border:1px solid var(--glass-line);min-width:0;box-shadow:inset 0 1px 0 var(--glass-rim), 0 8px 24px rgba(var(--shadow-rgb), calc(.4 * var(--shadow-k)));flex:1;align-items:center;gap:16px;padding:6px 8px 6px 6px;display:flex}.lesson-bar__exit{background:rgba(var(--ink-rgb), .05);border:1px solid var(--glass-line);width:34px;height:34px;color:var(--text-2);cursor:pointer;border-radius:50%;flex:none;place-items:center;transition:background .2s,color .2s;display:grid}.lesson-bar__exit:hover{background:rgba(var(--ink-rgb), .1);color:var(--text)}.lesson-bar__title{flex:none;align-items:baseline;gap:10px;min-width:0;display:flex}.lesson-bar__level{font:700 .7rem/1 var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--sp-action)}.lesson-bar__name{font:600 1.05rem/1.1 var(--font-display);color:var(--text);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.lesson-bar__pips{flex:1;justify-content:center;gap:6px;min-width:0;list-style:none;display:flex}.lesson-pip{background:rgba(var(--ink-rgb), .12);border-radius:6px;width:clamp(18px,4vw,44px);height:6px;transition:background .4s,box-shadow .4s}.lesson-pip.is-done{background:var(--sp-action)}.lesson-pip.is-current{background:var(--teal-200);box-shadow:0 0 12px rgba(var(--teal-hi-rgb), .65);animation:1.8s ease-in-out infinite pipPulse}.lesson-pip.is-clickable{cursor:pointer}.lesson-pip.is-clickable:hover{filter:brightness(1.35);transform:scaleY(1.4)}@keyframes pipPulse{50%{box-shadow:0 0 4px rgba(var(--teal-hi-rgb), .3)}}.lesson-bar__tools{flex:none;gap:8px;display:flex}.lesson-panel{--lp-pad-b:28px;z-index:1;background:var(--sp-bg-reading);min-height:0;color:var(--sp-text-reading);font-family:var(--font-body);scrollbar-width:thin;flex-direction:column;flex:1;gap:22px;padding:30px 26px 28px 40px;transition:background .35s,color .35s;display:flex;position:relative;overflow-y:auto}.lesson-step{flex-direction:column;gap:18px;animation:.5s cubic-bezier(.22,.8,.24,1) both stepIn;display:flex}@keyframes stepIn{0%{opacity:0;transform:translate(14px)}to{opacity:1;transform:none}}.lesson-step__kicker{font:700 .7rem/1 var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--sp-action)}.lesson-step__prompt{font:500 1.22rem/1.5 var(--font-serif);letter-spacing:-.005em;color:var(--sp-text-primary);text-wrap:pretty}.lesson-step__prompt b{color:var(--sp-text-primary);background:linear-gradient(transparent 62%, rgba(var(--teal-rgb), .22) 62%);font-weight:700}.lesson-step__controls:empty{display:none}.lesson-step__controls{background:var(--sp-bg-surface);border:1px solid var(--sp-border-hairline);border-radius:16px;flex-direction:column;gap:14px;padding:16px 16px 14px;display:flex}.lesson-step__controls.is-shake{animation:.5s shakeX}.lesson-control{flex-direction:column;gap:8px;display:flex}.lesson-control__head{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.lesson-control__label{font:600 .88rem/1.2 var(--font-body);color:var(--sp-text-primary)}.lesson-control__value{font:700 .95rem/1 var(--font-body);font-variant-numeric:tabular-nums;color:var(--sp-action)}.lesson-control input[type=range]{width:100%;accent-color:var(--sp-action)}.lesson-control input:disabled{opacity:.45}.lesson-control--toggle{cursor:pointer;flex-direction:row;justify-content:space-between;align-items:center}.lesson-switch{appearance:none;background:var(--sp-border-strong);cursor:pointer;border-radius:999px;flex:none;width:40px;height:22px;margin:0;transition:background .2s;position:relative}.lesson-switch:after{content:"";background:var(--sp-text-primary);border-radius:50%;width:16px;height:16px;transition:transform .2s;position:absolute;top:3px;left:3px}.lesson-switch:checked{background:var(--sp-action)}.lesson-switch:checked:after{transform:translate(18px)}.lesson-switch:focus-visible{outline:2px solid var(--sp-action);outline-offset:2px}.lesson-step__status{border-left:3px solid var(--sp-selection);background:color-mix(in srgb, var(--sp-selection) 10%, transparent);font:600 .9rem/1.4 var(--font-body);font-variant-numeric:tabular-nums;color:var(--sp-text-primary);border-radius:12px;padding:10px 14px}.lesson-step__status:empty{display:none}.lesson-options{flex-direction:column;gap:10px;list-style:none;display:flex}.lesson-option{text-align:left;background:var(--sp-bg-surface);border:1.5px solid var(--sp-border-hairline);width:100%;box-shadow:0 2px 0 var(--sp-border-strong);color:var(--sp-text-reading);font:500 .95rem/1.45 var(--font-body);cursor:pointer;border-radius:14px;align-items:flex-start;gap:12px;padding:13px 14px;transition:border-color .2s,background .2s,transform .15s,box-shadow .15s,opacity .3s;display:flex}.lesson-option:hover:not(:disabled){border-color:var(--sp-border-strong);transform:translateY(-1px)}.lesson-option:active:not(:disabled){box-shadow:0 0 0 var(--sp-border-strong);transform:translateY(2px)}.lesson-option:focus-visible{outline:2px solid var(--sp-focus-ring);outline-offset:2px}.lesson-option__letter{border:1.5px solid var(--sp-border-strong);width:26px;height:26px;font:700 .78rem/1 var(--font-body);color:var(--sp-text-secondary);border-radius:8px;flex:none;place-items:center;transition:all .2s;display:grid}.lesson-option.is-chosen{border-color:var(--sp-action);background:color-mix(in srgb, var(--sp-action) 10%, var(--sp-bg-surface));box-shadow:0 2px 0 var(--teal-700)}.lesson-option.is-chosen .lesson-option__letter{background:var(--sp-action);border-color:var(--sp-action);color:var(--sp-action-ink)}.lesson-option.is-wrong{border-color:color-mix(in srgb, var(--sp-mistake) 55%, transparent);opacity:.55;cursor:default;animation:.5s shakeX}.lesson-option.is-wrong .lesson-option__letter{border-color:var(--sp-mistake);color:var(--sp-mistake)}.lesson-option.is-right{opacity:1;border-color:var(--sp-correct);background:var(--sp-correct-ground);box-shadow:0 2px 0 color-mix(in srgb, var(--sp-correct) 60%, transparent);animation:1s rightGlow}.lesson-option.is-right .lesson-option__letter{background:var(--sp-correct);border-color:var(--sp-correct);color:#04110a}.lesson-option:disabled:not(.is-right):not(.is-wrong){opacity:.6;cursor:default}@keyframes rightGlow{0%{box-shadow:0 0 0 0 color-mix(in srgb, var(--sp-correct) 50%, transparent)}to{box-shadow:0 0 0 10px #0000}}@keyframes shakeX{0%,to{transform:none}15%{transform:translate(-8px)}30%{transform:translate(7px)}45%{transform:translate(-5px)}60%{transform:translate(3px)}75%{transform:translate(-2px)}}.lesson-require{font:500 .88rem/1.4 var(--font-body);color:var(--sp-text-secondary);align-items:center;gap:10px;display:flex}.lesson-require__dot{border:2px solid var(--sp-border-strong);border-radius:50%;flex:none;width:18px;height:18px;transition:all .3s}.lesson-require.is-met{color:var(--sp-correct)}.lesson-require.is-met .lesson-require__dot{border-color:var(--sp-correct);background:var(--sp-correct) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2304110a' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 12px no-repeat}.lesson-feedback{opacity:0;border:1px solid;border-radius:14px;padding:14px 16px;transition:opacity .35s,transform .35s cubic-bezier(.22,.8,.24,1);transform:translateY(8px)}.lesson-feedback.is-in{opacity:1;transform:none}.lesson-feedback__title{font:700 .95rem/1.3 var(--font-body);margin-bottom:4px}.lesson-feedback__body{font:400 .95rem/1.6 var(--font-serif);color:var(--sp-text-reading)}.lesson-feedback--right{background:var(--sp-correct-ground);border-color:color-mix(in srgb, var(--sp-correct) 45%, transparent)}.lesson-feedback--right .lesson-feedback__title{color:var(--sp-correct)}.lesson-feedback--retry{background:var(--sp-retry-ground);border-color:color-mix(in srgb, var(--sp-retry) 45%, transparent)}.lesson-feedback--retry .lesson-feedback__title{color:var(--sp-retry)}.lesson-feedback--reveal{background:color-mix(in srgb, var(--sp-selection) 10%, transparent);border-color:color-mix(in srgb, var(--sp-selection) 40%, transparent)}.lesson-feedback--reveal .lesson-feedback__title{color:var(--sp-selection)}.lesson-actions{bottom:calc(-1 * var(--lp-pad-b,28px));z-index:2;margin-top:auto;margin-bottom:calc(-1 * var(--lp-pad-b,28px));padding:16px 0 var(--lp-pad-b,28px);background:linear-gradient(to bottom, transparent, var(--sp-bg-reading) 16px);flex-direction:column;align-items:stretch;gap:12px;display:flex;position:sticky}.lesson-actions--done{background:0 0;margin-bottom:0;padding:4px 0 0;position:static}.lesson-btn{border-radius:var(--radius-full);min-height:48px;font:700 1rem/1.2 var(--font-body);text-align:center;cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;padding:12px 22px;text-decoration:none;transition:transform .12s,box-shadow .12s,background .2s,opacity .2s;display:inline-flex}.lesson-btn--primary{background:var(--sp-action);border-color:var(--teal-200);color:var(--sp-action-ink);box-shadow:0 4px 0 var(--teal-700), 0 8px 24px rgba(var(--teal-rgb), .22)}.lesson-btn--primary:hover:not(:disabled){background:var(--sp-action-hover)}.lesson-btn--primary:active:not(:disabled){box-shadow:0 0 0 var(--teal-700);transform:translateY(4px)}.lesson-btn--primary:disabled{opacity:.4;cursor:not-allowed;box-shadow:0 4px 0 var(--teal-900)}.lesson-btn--ghost{border-color:var(--sp-border-strong);color:var(--sp-text-primary);background:0 0}.lesson-btn--ghost:hover{background:color-mix(in srgb, var(--sp-text-primary) 6%, transparent)}.lesson-btn:focus-visible,.lesson-reveal:focus-visible{outline:2px solid var(--sp-focus-ring);outline-offset:3px}.lesson-reveal{font:600 .88rem/1.2 var(--font-body);color:var(--sp-text-secondary);text-decoration:underline;-webkit-text-decoration-color:color-mix(in srgb, var(--sp-text-secondary) 40%, transparent);text-decoration-color:color-mix(in srgb, var(--sp-text-secondary) 40%, transparent);text-underline-offset:4px;cursor:pointer;background:0 0;border:none;align-self:center;padding:4px 6px}.lesson-reveal:hover{color:var(--sp-text-primary)}.lesson-done{flex-direction:column;gap:16px;animation:.6s cubic-bezier(.22,.8,.24,1) both stepIn;display:flex}.lesson-done__title{font:600 2rem/1.1 var(--font-display);letter-spacing:-.02em;color:var(--sp-text-primary)}.lesson-done__lede{font:500 .95rem/1.4 var(--font-body);color:var(--sp-text-secondary)}.lesson-done__list{flex-direction:column;gap:12px;list-style:none;display:flex}.lesson-done__list li{font:400 1rem/1.55 var(--font-serif);color:var(--sp-text-reading);padding-left:30px;animation:.5s cubic-bezier(.22,.8,.24,1) both stepIn;position:relative}.lesson-done__list li:nth-child(2){animation-delay:.12s}.lesson-done__list li:nth-child(3){animation-delay:.24s}.lesson-done__list li:before{content:"";background:var(--sp-correct) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2304110a' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 12px no-repeat;border-radius:50%;width:20px;height:20px;position:absolute;top:3px;left:0}.lesson-actions--done{margin-top:10px}.pc{--gx:0px;--gy:0px;z-index:40;width:68px;height:68px;color:var(--hgamma-300);pointer-events:none;will-change:transform;margin:-34px 0 0 -34px;transition:transform .6s cubic-bezier(.22,.9,.24,1);position:absolute;top:0;left:0}.pc-figure{filter:drop-shadow(0 0 10px #c8b7ff73);width:100%;height:100%}.pc-svg{width:100%;height:100%;display:block;overflow:visible}.pc-bubble{background:var(--sp-bg-raised);border:1px solid var(--sp-border-strong);width:max-content;max-width:270px;box-shadow:0 14px 34px rgba(var(--shadow-rgb), calc(.5 * var(--shadow-k)));color:var(--text-l,#f5f7fb);font:500 .9rem/1.45 var(--font-body);opacity:0;transform-origin:100%;border-radius:16px 16px 4px;padding:11px 15px;transition:opacity .28s,transform .36s cubic-bezier(.22,1.2,.36,1);position:absolute;top:50%;right:calc(100% + 6px);transform:translateY(-50%)translate(8px)scale(.94)}.pc-bubble.is-in{opacity:1;transform:translateY(-50%)}.pc-bubble.is-quiet{opacity:.5}.pc-bubble--good{border-color:color-mix(in srgb, var(--mercury-400) 60%, transparent)}.pc-bubble--hint{border-color:color-mix(in srgb, var(--sodium-300) 60%, transparent)}.pc-bubble--watch{border-color:color-mix(in srgb, var(--cherenkov-300) 60%, transparent)}.pc-bubble:after{content:"";background:inherit;border-bottom:1px solid;border-right:1px solid;border-color:inherit;width:10px;height:10px;position:absolute;bottom:9px;right:-6px;transform:rotate(-45deg)}.pc.pc--docked{width:48px;height:48px;margin:0}.pc--docked .pc-bubble{transform-origin:100% 0;border-radius:16px 4px 16px 16px;max-width:min(78vw,300px);top:calc(100% + 6px);right:0;transform:translateY(-4px)scale(.96)}.pc--docked .pc-bubble.is-in{transform:none}.pc--docked .pc-bubble:after{display:none}@media (width<=900px){.sim-page.is-lesson{grid-template-rows:auto minmax(220px,40vh) 1fr;grid-template-columns:1fr;height:100dvh}.sim-page.is-lesson .sim-controls.is-lesson{border-left:0;border-top:1px solid var(--sp-border-hairline);width:auto;height:auto;min-height:0;box-shadow:none;z-index:1;padding:0;position:relative;top:auto;right:auto;overflow:hidden;transform:none}.lesson-panel{--lp-pad-b:22px;padding:20px 18px 22px}.lesson-bar{gap:10px}.lesson-bar__level{display:none}.lesson-bar__name{font-size:.92rem}.lesson-bar__sound span{display:none}.lesson-step__prompt{padding-right:48px;font-size:1.08rem}}@media (width<=560px){.lesson-bar__title,.lessons-pill span{display:none}}.lesson-spotlayer{z-index:30;pointer-events:none;position:absolute;overflow:hidden}.lesson-spot{--ring:0 0 0 4px rgba(var(--teal-rgb), .16), 0 0 28px rgba(var(--teal-rgb), .45);border:2px solid var(--teal-200);opacity:0;border-radius:14px;animation:5.2s forwards spotIn;position:absolute}.lesson-spot.is-persist{animation:2.6s forwards spotIn}.lesson-spot:after{content:"";border-radius:inherit;border:2px solid var(--teal-200);animation:1.8s ease-out .5s infinite spotPulse;position:absolute;inset:-2px}.lesson-spot.is-out{animation:.42s forwards spotOut}@keyframes spotIn{0%{opacity:0;box-shadow:var(--ring), 0 0 0 200vmax rgba(var(--void-rgb), 0);transform:scale(1.06)}10%{opacity:1;box-shadow:var(--ring), 0 0 0 200vmax rgba(var(--void-rgb), .5);transform:none}50%{box-shadow:var(--ring), 0 0 0 200vmax rgba(var(--void-rgb), .5)}75%,to{opacity:1;box-shadow:var(--ring), 0 0 0 200vmax rgba(var(--void-rgb), 0);transform:none}}@keyframes spotOut{0%{opacity:1}to{opacity:0}}@keyframes spotPulse{0%{opacity:.8;transform:scale(1)}to{opacity:0;transform:scale(1.06,1.12)}}.lesson-spot.is-still,.lesson-spot.is-still:after{opacity:1;box-shadow:var(--ring);animation:none}.lesson-tapcue{font:600 .9rem/1.45 var(--font-body);color:var(--sp-text-primary);align-items:center;gap:12px;display:flex}.lesson-tapcue svg{color:var(--sp-action);flex:none;animation:1.8s ease-in-out infinite tapNudge}.lesson-tapcue.is-shake{animation:.5s shakeX}@keyframes tapNudge{0%,to{transform:translate(0)}40%{transform:translate(-3px,-3px)}55%{transform:translateY(1px)scale(.92)}70%{transform:translate(0)}}.lesson-estimate{background:var(--sp-bg-surface);border:1.5px solid var(--sp-border-hairline);box-shadow:0 2px 0 var(--sp-border-strong);border-radius:16px;align-items:center;gap:10px;padding:6px 8px 6px 6px;transition:border-color .2s,background .2s;display:flex}.lesson-estimate:focus-within{border-color:var(--sp-action)}.lesson-estimate__input{min-width:0;font:700 1.3rem/1.2 var(--font-body);font-variant-numeric:tabular-nums;color:var(--sp-text-primary);background:0 0;border:0;outline:0;flex:1;padding:10px 12px}.lesson-estimate__input::placeholder{color:var(--sp-text-secondary);opacity:.7;font-weight:500}.lesson-estimate__input:disabled{opacity:1;color:var(--sp-text-primary);-webkit-text-fill-color:currentColor}.lesson-estimate__unit{background:color-mix(in srgb, var(--sp-action) 12%, transparent);font:700 .9rem/1 var(--font-body);color:var(--sp-action);border-radius:10px;flex:none;padding:7px 12px}.lesson-estimate.is-shake{border-color:color-mix(in srgb, var(--sp-mistake) 55%, transparent);animation:.5s shakeX}.lesson-estimate.is-right{border-color:var(--sp-correct);background:var(--sp-correct-ground);box-shadow:0 2px 0 color-mix(in srgb, var(--sp-correct) 60%, transparent)}.lesson-estimate.is-revealed{border-color:var(--sp-selection)}.lesson-figure{background:color-mix(in srgb, var(--sp-bg-page) 60%, transparent);border:1px solid var(--sp-border-hairline);color:var(--sp-text-secondary);border-radius:12px;margin-top:12px;padding:10px 10px 8px}.lesson-figure svg{width:100%;height:auto;display:block;overflow:visible}.lesson-figure__label{fill:currentColor;font:600 9px var(--font-body)}.lesson-figure figcaption{font:500 .82rem/1.4 var(--font-body);color:var(--sp-text-secondary);margin-top:6px}.lesson-intro{flex-direction:column;gap:12px;animation:.55s cubic-bezier(.22,.8,.24,1) both stepIn;display:flex}.lesson-intro__coin{border:1.5px solid var(--teal-200);background:radial-gradient(circle at 35% 28%, var(--raised-l,#1a2333) 0%, var(--sp-bg-surface) 62%, var(--edge-l,#070b12) 100%);width:112px;height:112px;box-shadow:0 6px 0 var(--edge-l,#04070c), 0 0 0 6px rgba(var(--teal-rgb), .1), 0 0 40px rgba(var(--teal-rgb), .3);border-radius:50%;place-items:center;margin-bottom:8px;animation:.7s cubic-bezier(.3,1.5,.5,1) both introCoin;display:grid}.lesson-intro__coin .track-art{width:80px;height:80px;overflow:visible}@keyframes introCoin{0%{opacity:0;transform:scale(.6)rotate(-12deg)}to{opacity:1;transform:none}}.lesson-intro__title{font:600 2rem/1.1 var(--font-display);letter-spacing:-.02em;color:var(--sp-text-primary)}.lesson-intro__tagline{font:400 1.08rem/1.5 var(--font-serif);color:var(--sp-text-reading)}.lesson-intro__lede{font:700 .7rem/1 var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--sp-text-secondary);margin-top:8px}.lesson-intro__list{flex-direction:column;gap:10px;list-style:none;display:flex}.lesson-intro__list li{background:var(--sp-bg-surface);border:1px solid var(--sp-border-hairline);font:500 .98rem/1.45 var(--font-serif);color:var(--sp-text-primary);border-radius:14px;padding:12px 14px 12px 44px;animation:.5s cubic-bezier(.22,.8,.24,1) both stepIn;position:relative}.lesson-intro__list li:first-child{animation-delay:.15s}.lesson-intro__list li:nth-child(2){animation-delay:.27s}.lesson-intro__list li:before{content:"?";background:color-mix(in srgb, var(--sp-action) 16%, transparent);width:20px;height:20px;font:800 .75rem/1 var(--font-body);color:var(--sp-action);border-radius:50%;place-items:center;display:grid;position:absolute;top:50%;left:13px;transform:translateY(-50%)}.levelup{z-index:1000;background:rgba(var(--void-rgb), 0);place-items:center;padding:16px;transition:background .35s,-webkit-backdrop-filter .35s,backdrop-filter .35s,opacity .3s;display:grid;position:fixed;inset:0}.levelup.is-in{background:rgba(var(--void-rgb), .74);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.levelup.is-out{opacity:0}.levelup__card{background:var(--sp-bg-reading);border:1px solid var(--sp-border-strong);width:min(420px,100%);box-shadow:0 30px 80px rgba(var(--shadow-rgb), calc(.6 * var(--shadow-k))), inset 0 1px 0 #ffffff0f;text-align:center;opacity:0;border-radius:28px;flex-direction:column;align-items:center;gap:10px;padding:30px 24px 24px;transition:transform .55s cubic-bezier(.3,1.4,.5,1),opacity .3s;display:flex;position:relative;transform:translateY(24px)scale(.94)}.levelup.is-in .levelup__card{opacity:1;transform:none}.levelup__stage{place-items:end center;width:160px;height:196px;margin-bottom:8px;display:grid;position:relative}.levelup__coin{border:2px solid var(--mercury-300);background:radial-gradient(circle at 35% 28%, var(--raised-l,#1a2333) 0%, var(--sp-bg-surface) 62%, var(--edge-l,#070b12) 100%);width:136px;height:136px;box-shadow:0 7px 0 var(--edge-l,#04070c), 0 0 0 8px #56c95f1f, 0 0 60px #56c95f59;border-radius:50%;place-items:center;display:grid;position:relative}.levelup__face{place-items:center;width:96px;height:96px;display:grid}.levelup__face .track-art{width:100%;height:100%;overflow:visible}.levelup__check{border:3px solid var(--sp-bg-reading);background:var(--mercury-400) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2304110a' stroke-width='3.5' 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.72);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.signin__card{background:var(--sp-bg-reading);border:1px solid var(--sp-border-strong);width:min(420px,100%);max-height:calc(100dvh - 32px);box-shadow:0 30px 80px rgba(var(--shadow-rgb), calc(.6 * var(--shadow-k))), inset 0 1px 0 #ffffff0d;opacity:0;border-radius:24px;padding:28px 28px 22px;transition:opacity .22s,transform .3s cubic-bezier(.22,1,.36,1);position:relative;overflow-y:auto;transform:translateY(14px)scale(.97)}.signin.is-in .signin__card{opacity:1;transform:none}.signin__close{background:rgba(var(--ink-rgb), .05);width:32px;height:32px;color:var(--text-2);cursor:pointer;border:0;border-radius:50%;place-items:center;display:grid;position:absolute;top:14px;right:14px}.signin__close:hover{background:rgba(var(--ink-rgb), .1);color:var(--text)}.signin__brand{font:700 1.05rem var(--font-display);color:var(--text);margin-bottom:20px}.signin__brand span{color:var(--accent)}.signin__title{font:600 1.55rem/1.15 var(--font-display);letter-spacing:-.015em;color:var(--text);text-wrap:balance}.signin__lead{font:400 .98rem/1.55 var(--font-serif);color:var(--sp-text-reading);margin:8px 0 18px}.signin__lead b{color:var(--text)}.signin__google{justify-content:center;min-height:44px;display:flex}.signin__note{font:500 .82rem/1.4 var(--font-body);color:var(--text-3)}.signin__or{font:600 .72rem var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--text-3);align-items:center;gap:12px;margin:16px 0;display:flex}.signin__or:before,.signin__or:after{content:"";background:var(--glass-line);flex:1;height:1px}.signin__form,.signin__code-form{flex-direction:column;gap:10px;display:flex}.signin__label{font:600 .8rem var(--font-body);color:var(--text-2)}.signin__input,.acct-input{border:1px solid var(--sp-border-strong);background:var(--input-l,#080c13);width:100%;color:var(--text);font:500 1rem var(--font-body);border-radius:12px;padding:12px 14px}.signin__input:focus,.acct-input:focus{outline:2px solid var(--sp-action);outline-offset:1px;border-color:#0000}.signin__primary,.acct-btn{border-radius:var(--radius-full);border:1px solid var(--teal-200);background:var(--sp-action);min-height:46px;color:var(--sp-action-ink);font:700 .98rem/1.2 var(--font-body);cursor:pointer;box-shadow:0 4px 0 var(--teal-700);justify-content:center;align-items:center;padding:11px 20px;text-decoration:none;transition:transform .12s,box-shadow .12s,background .2s;display:inline-flex}.signin__primary:hover,.acct-btn:hover{background:var(--sp-action-hover)}.signin__primary:active,.acct-btn:active{box-shadow:0 0 0 var(--teal-700);transform:translateY(4px)}.signin__primary:disabled{opacity:.6;cursor:wait}.signin__primary:focus-visible,.acct-btn:focus-visible,.signin__link:focus-visible,.signin__guest-btn:focus-visible{outline:2px solid var(--sp-focus-ring);outline-offset:3px}.signin__guest-btn{border-radius:var(--radius-full);border:1px solid var(--sp-border-strong,#ffffff29);width:100%;min-height:44px;color:var(--text-2,#a0aec0);font:600 .92rem/1.2 var(--font-body);cursor:pointer;background:0 0;justify-content:center;align-items:center;margin-top:10px;padding:10px 18px;transition:all .2s;display:inline-flex}.signin__guest-btn:hover{color:var(--text-l,#fff);background:#ffffff0f;border-color:#ffffff52}.signin__guest-btn:active{transform:translateY(1px)}.signin__error,.acct-error{font:500 .86rem/1.4 var(--font-body);color:var(--halpha-300);margin:0}.signin__boxes{justify-content:space-between;gap:8px;display:flex}.signin__boxes.is-shake{animation:.45s signinShake}@keyframes signinShake{0%,to{transform:none}20%{transform:translate(-7px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(2px)}}.signin__box{aspect-ratio:5/6;border:1.5px solid var(--sp-border-strong);background:var(--input-l,#080c13);width:100%;max-width:50px;color:var(--text);font:700 1.5rem var(--font-body);text-align:center;font-variant-numeric:tabular-nums;border-radius:12px}.signin__box:focus{border-color:var(--sp-action);box-shadow:0 0 0 3px rgba(var(--teal-rgb), .18);outline:none}.signin__row{justify-content:space-between;gap:12px;margin-top:12px;display:flex}.signin__link{color:var(--teal-200);font:600 .84rem var(--font-body);cursor:pointer;background:0 0;border:0;padding:4px 0}.signin__link:disabled{color:var(--text-3);cursor:default}.signin__fine{font:500 .76rem/1.5 var(--font-body);color:var(--text-3);margin-top:18px}.feedback-context{border-radius:var(--radius-sm,6px);font:500 .8rem var(--font-body);background:#ffffff0a;border:1px solid #ffffff14;align-items:center;gap:8px;margin-bottom:14px;padding:4px 10px;display:inline-flex}.feedback-context__badge{text-transform:uppercase;letter-spacing:.05em;color:var(--teal-300,#00e5b4);font-size:.68rem;font-weight:700}.feedback-context__text{color:var(--text-2,#c0c6d4);word-break:break-all}.feedback-categories{flex-wrap:wrap;gap:6px;display:flex}.feedback-chip{border-radius:var(--radius-full,999px);color:var(--text-3,#8a94a6);font:600 .78rem var(--font-body);cursor:pointer;background:#ffffff0a;border:1px solid #ffffff1a;padding:5px 12px;transition:all .15s}.feedback-chip:hover{color:var(--text-1,#fff);background:#ffffff14;border-color:#fff3}.feedback-chip.active{color:#00e5b4;background:#00e5b41f;border-color:#00e5b473}.toast-host{left:50%;bottom:calc(22px + env(safe-area-inset-bottom,0px));z-index:1200;pointer-events:none;flex-direction:column;align-items:center;gap:8px;display:flex;position:fixed;transform:translate(-50%)}.toast{border-radius:var(--radius-full);background:var(--sp-bg-raised);border:1px solid color-mix(in srgb, var(--mercury-400) 45%, transparent);max-width:min(92vw,420px);box-shadow:0 14px 34px rgba(var(--shadow-rgb), calc(.5 * var(--shadow-k)));color:var(--text-l,#f5f7fb);font:600 .88rem/1.35 var(--font-body);text-align:center;opacity:0;padding:11px 18px;transition:opacity .22s,transform .3s cubic-bezier(.22,1,.36,1);transform:translateY(10px)}.toast.is-in{opacity:1;transform:none}.toast--warn{border-color:color-mix(in srgb, var(--sodium-300) 55%, transparent)}.psi-limit{background:color-mix(in srgb, var(--hgamma-400) 9%, transparent);border:1px solid color-mix(in srgb, var(--hgamma-400) 32%, transparent);border-radius:14px;flex-direction:column;align-items:flex-start;gap:10px;margin-top:6px;padding:14px 16px;display:flex}.psi-limit__text{font:500 .95rem/1.55 var(--font-body);color:var(--text);margin:0}.psi-limit__note{font:500 .84rem/1.45 var(--font-body);color:var(--text-2);margin:0}.psi-limit__btn{border-radius:var(--radius-full);border:1px solid var(--teal-200);background:var(--sp-action);color:var(--sp-action-ink);font:700 .86rem var(--font-body);cursor:pointer;box-shadow:0 3px 0 var(--teal-700);padding:9px 16px}.psi-limit__btn:hover{background:var(--sp-action-hover)}.psi-left{font:500 .78rem/1.4 var(--font-body);color:var(--text-3);text-align:center;margin:6px 4px 0}.psi-left[hidden]{display:none}.psi-left__link{color:var(--teal-200);font:600 .78rem var(--font-body);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;padding:0;text-decoration:underline}.acct-page{flex-direction:column;gap:22px;max-width:1060px;display:flex}.acct-page--narrow{max-width:560px;padding-top:140px}.acct-host{flex-direction:column;gap:22px;display:flex}.acct-card{border-radius:var(--radius-xl);flex-direction:column;gap:12px;padding:24px;display:flex}.acct-card--center{text-align:center;align-items:center;padding:40px 28px}.acct-title{font:600 1.7rem/1.15 var(--font-display);color:var(--text)}.acct-lede{font:400 1rem/1.55 var(--font-serif);color:var(--sp-text-reading)}.acct-ok{background:var(--mercury-400);color:#04110a;border-radius:50%;place-items:center;width:56px;height:56px;display:grid}.acct-spinner{border:3px solid rgba(var(--ink-rgb), .12);border-top-color:var(--sp-action);border-radius:50%;width:34px;height:34px;animation:.9s linear infinite acctSpin}@keyframes acctSpin{to{transform:rotate(360deg)}}.acct-hero{border-radius:var(--radius-xl);align-items:center;gap:18px;padding:26px;display:flex}.acct-hero__who{flex:1;min-width:0}.acct-hero__name{font:600 clamp(1.6rem, 4vw, 2.2rem)/1.1 var(--font-display);letter-spacing:-.02em;color:var(--text);margin-top:4px}.acct-hero__email{font:500 .9rem var(--font-body);color:var(--text-3)}.acct-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.acct-h{font:700 .74rem/1 var(--font-body);letter-spacing:.005em;text-transform:none;color:var(--sp-action)}.acct-h--gap{margin-top:12px}.acct-label{font:600 .8rem var(--font-body);color:var(--text-2)}.acct-row{align-items:center;gap:10px;display:flex}.acct-row--wrap{flex-wrap:wrap}.acct-row .acct-input{flex:1;min-width:0}.acct-btn--small{min-height:42px;padding:9px 16px;font-size:.88rem}.acct-btn--ghost{background:rgba(var(--ink-rgb), .04);border-color:var(--glass-line);color:var(--text);box-shadow:none}.acct-btn--ghost:hover{background:rgba(var(--ink-rgb), .09)}.acct-btn--danger{border-color:color-mix(in srgb, var(--halpha-400) 55%, transparent);color:var(--halpha-300);box-shadow:none;background:0 0}.acct-btn--danger:hover{background:color-mix(in srgb, var(--halpha-400) 12%, transparent)}.acct-avatars{grid-template-columns:repeat(auto-fill,minmax(46px,1fr));gap:8px;display:grid}.acct-avatar{aspect-ratio:1;background:rgba(var(--ink-rgb), .03);cursor:pointer;border:1.5px solid #0000;border-radius:14px;place-items:center;padding:0;transition:border-color .18s,background .18s,transform .15s;display:grid}.acct-avatar:hover{background:rgba(var(--ink-rgb), .06);transform:translateY(-2px)}.acct-avatar.is-on{border-color:var(--sp-action);background:rgba(var(--teal-rgb), .08)}.acct-toggle{border-top:1px solid var(--glass-line);cursor:pointer;align-items:center;gap:14px;padding:12px 0;display:flex}.acct-toggle input{opacity:0;pointer-events:none;position:absolute}.acct-toggle__text{font:500 .82rem/1.45 var(--font-body);color:var(--text-3);flex-direction:column;flex:1;gap:3px;display:flex}.acct-toggle__text b{color:var(--text);font-size:.94rem;font-weight:600}.acct-psi{font:500 .94rem var(--font-body);color:var(--text)}.acct-bar{background:rgba(var(--ink-rgb), .08);border-radius:8px;height:8px;overflow:hidden}.acct-bar span{background:var(--hgamma-400);height:100%;transform:scaleX(var(--p,0));transform-origin:0;transition:transform .6s cubic-bezier(.22,.8,.24,1);display:block}.acct-methods{flex-direction:column;list-style:none;display:flex}.acct-methods li{border-bottom:1px solid var(--glass-line);font:500 .9rem var(--font-body);color:var(--text-2);justify-content:space-between;gap:12px;padding:10px 0;display:flex}.acct-methods b{color:var(--text);text-overflow:ellipsis;font-weight:600;overflow:hidden}.acct-note{font:500 .84rem/1.55 var(--font-body);color:var(--text-3)}.acct-note code{color:var(--teal-200);font-size:.8rem}.acct-delete{border:1px solid color-mix(in srgb, var(--halpha-400) 35%, transparent);background:color-mix(in srgb, var(--halpha-400) 6%, transparent);border-radius:14px;flex-direction:column;gap:8px;margin-top:6px;padding:14px;display:flex}.acct-delete[hidden]{display:none}.admin-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.admin-stat{border-radius:18px;flex-direction:column;gap:4px;padding:18px;display:flex}.admin-stat b{font:600 1.9rem/1 var(--font-display);color:var(--text);font-variant-numeric:tabular-nums}.admin-stat span{font:600 .8rem var(--font-body);color:var(--text-2)}.admin-stat small{font:500 .74rem var(--font-body);color:var(--text-3)}.admin-people{flex-direction:column;list-style:none;display:flex}.admin-person{border-bottom:1px solid var(--glass-line);align-items:center;gap:12px;padding:12px 0;display:flex}.admin-person__who{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.admin-person__who b{font:600 .94rem var(--font-body);color:var(--text);text-overflow:ellipsis;overflow:hidden}.admin-person__who small{font:500 .78rem/1.4 var(--font-body);color:var(--text-3)}.admin-person__fixed{font:500 .76rem var(--font-body);color:var(--text-3)}.admin-empty{font:500 .9rem var(--font-body);color:var(--text-3);padding:12px 0}.track-note{font:500 .88rem/1.5 var(--font-body);color:var(--text-2);margin-top:4px}.track-note--tester{color:var(--sodium-200)}.track-note__link,.email-dialog__signin,.idealab-signin{color:var(--teal-200);font-family:var(--font-body);font-size:inherit;text-underline-offset:3px;cursor:pointer;background:0 0;border:0;padding:0;font-weight:600;text-decoration:underline}.email-dialog__signin{text-align:left;margin-top:6px;font-size:.82rem}.idealab-signin{margin-top:10px;font-size:.88rem}.idealab-who{font:500 .88rem var(--font-body);color:var(--text-3);flex-direction:column;gap:2px;margin-bottom:10px;display:flex}.idealab-who b{color:var(--text);font-size:1rem}.idealab-credit{font:600 .92rem var(--font-body);color:var(--text);cursor:pointer;align-items:center;gap:10px;margin-bottom:6px;display:flex}.idealab-credit input{width:18px;height:18px;accent-color:var(--sp-action)}.lb-row--mine{box-shadow:inset 3px 0 0 var(--sp-action)}.lb-support--mine,.lb-support--mine:disabled{opacity:1;color:var(--sp-action-ink);background:var(--sp-action);border-color:var(--teal-200)}.levelup__save{background:rgba(var(--teal-rgb), .06);border:1px solid rgba(var(--teal-rgb), .25);text-align:left;border-radius:16px;flex-direction:column;gap:12px;width:100%;padding:14px;display:flex}.levelup__save p{font:500 .88rem/1.5 var(--font-body);color:var(--text-2);margin:0}.levelup__save b{color:var(--text)}.levelup__save-row{gap:10px;display:flex}.levelup__save-row .lesson-btn{flex:1}@media (width<=860px){.acct-grid,.admin-stats{grid-template-columns:1fr}.acct-hero{flex-wrap:wrap}}@media (width<=640px){.acct__menu{top:auto;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));transform-origin:bottom;width:auto;position:fixed}.site-nav__account{margin-left:2px}.acct__signin{padding:7px 11px;font-size:.8rem}}@media (prefers-reduced-motion:reduce){.signin,.signin__card,.toast,.acct__menu,.acct-spinner{transition:none!important;animation:none!important}}.psi-limit__btn--pro{border-color:color-mix(in oklab, var(--hgamma-400) 60%, transparent);background:color-mix(in srgb, var(--hgamma-400) 16%, transparent);color:var(--hgamma-200);box-shadow:none;align-self:flex-start;text-decoration:none}.psi-limit__btn--pro:hover{background:color-mix(in srgb, var(--hgamma-400) 26%, transparent)}.acct-plan__name{font:600 1.15rem/1.3 var(--font-display);color:var(--text)}.acct-plan.is-pro .acct-plan__name{color:var(--hgamma-200)}.acct-btn--pro{color:#160f2b;background:var(--hgamma-300);border-color:#0000;text-decoration:none}.acct__plan{font:600 .8rem/1.4 var(--font-body);color:var(--text-2);margin:0 0 4px}.acct__plan.is-pro{color:var(--hgamma-300)}.acct__links a.acct__pro,.acct__links button.acct__pro{color:var(--hgamma-300);font-weight:700}.acct__links .acct__pro--waitlist{border:1px solid color-mix(in srgb, var(--pill-c,var(--hgamma-400)) 25%, transparent);background:color-mix(in srgb, var(--pill-c,var(--hgamma-400)) 8%, transparent);cursor:pointer;text-align:left;border-radius:12px;justify-content:space-between;align-items:center;gap:8px;width:100%;padding:10px 12px;transition:background .18s,transform .15s,border-color .18s,box-shadow .18s;display:flex}.acct__links .acct__pro--waitlist:hover{background:color-mix(in srgb, var(--pill-c,var(--hgamma-400)) 16%, transparent);border-color:color-mix(in srgb, var(--pill-c,var(--hgamma-400)) 45%, transparent);box-shadow:0 4px 16px -4px color-mix(in srgb, var(--pill-c,var(--hgamma-400)) 30%, transparent);transform:translateY(-1px)}.acct__pro-brand-wrap{flex-direction:column;gap:2px;display:flex}.acct__pro-brand{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.01em;color:#fff;font-size:1.05rem;font-weight:700;line-height:1.15}.acct__pro-brand span{color:var(--accent,#00e5b4)}.acct__pro-sub{color:var(--text-3,#ffffff8c);font-size:.72rem;font-weight:500;display:block}.acct__pro-tag{font-family:var(--font-body,system-ui, sans-serif);border-radius:var(--radius-full,9999px);letter-spacing:.02em;background:color-mix(in srgb, var(--pill-c,#c8b7ff) 20%, transparent);border:1px solid color-mix(in srgb, var(--pill-c,#c8b7ff) 45%, transparent);color:var(--pill-c,#c8b7ff);box-shadow:0 0 12px -2px color-mix(in srgb, var(--pill-c,#c8b7ff) 35%, transparent);white-space:nowrap;padding:5px 12px;font-size:.74rem;font-weight:600}.site-nav{top:calc(16px + env(safe-area-inset-top,0px));z-index:200;border-radius:var(--radius-full);white-space:nowrap;view-transition-name:site-nav;align-items:center;gap:6px;max-width:calc(100vw - 24px);padding:7px 7px 7px 22px;display:flex;position:fixed;left:50%;transform:translate(-50%)}.site-nav.is-pixel{left:var(--nav-left);transform:none}.site-nav[data-glass]{background:#0a0d16d6;border-color:#ffffff24;box-shadow:inset 0 1px #ffffff12,0 14px 40px #0000008c}.site-nav__brand{font-family:var(--font-display);letter-spacing:-.015em;color:var(--text);view-transition-name:sharp-brand;margin-right:14px;font-size:1.32rem;font-weight:700;text-decoration:none}.site-nav__brand span{color:var(--accent)}.site-nav__links{align-items:center;gap:2px;max-width:620px;transition:max-width .5s cubic-bezier(.22,1,.36,1),opacity .3s;display:flex;position:relative;overflow:hidden}.site-nav.is-compact .site-nav__links,.site-nav.is-island .site-nav__links{opacity:0;max-width:0}.site-nav__lens{border-radius:var(--radius-full);background:rgba(var(--ink-rgb), .07);opacity:0;pointer-events:none;height:100%;transition:transform .38s cubic-bezier(.3,1.3,.5,1),width .38s cubic-bezier(.3,1.3,.5,1),opacity .25s;position:absolute;top:0;left:0;box-shadow:inset 0 0 0 1px #ffffff12}.site-nav__lens.is-on{opacity:1}.site-nav__lens.is-instant{transition:none}.site-nav__link{z-index:1;border-radius:var(--radius-full);font:600 .95rem var(--font-body);color:#eceff7d6;cursor:pointer;background:0 0;border:0;align-items:center;gap:5px;padding:10px 16px;text-decoration:none;transition:color .18s;display:inline-flex;position:relative}.site-nav__link:hover,.site-nav__link[aria-expanded=true],.site-nav__link.is-active{color:var(--text)}.site-nav__chev{opacity:.6;transition:transform .25s}.site-nav__trigger[aria-expanded=true] .site-nav__chev{transform:rotate(180deg)}.site-nav__live{background:var(--mercury-400);border-radius:50%;width:7px;height:7px;animation:4s ease-in-out infinite navLive;display:inline-block;box-shadow:0 0 #56c95f80}.site-nav__live[hidden]{display:none}.site-nav__count{background:rgba(var(--ink-rgb), .08);font:700 .7rem/1.4 var(--font-body);color:var(--text-2);font-variant-numeric:tabular-nums;border-radius:99px;margin-left:2px;padding:1px 7px}.site-nav__new{background:var(--teal-300,var(--accent-hi));width:7px;height:7px;box-shadow:0 0 8px rgba(var(--teal-rgb), .7);border-radius:50%;margin-left:-1px}@keyframes navLive{0%,to{box-shadow:0 0 #56c95f73}50%{box-shadow:0 0 0 5px #56c95f00}}.site-nav__island{max-width:0;font:600 .86rem var(--font-body);color:var(--text);opacity:0;cursor:pointer;background:0 0;border:0;align-items:center;gap:8px;padding:0;transition:max-width .55s cubic-bezier(.22,1,.36,1),opacity .35s .1s,padding .55s;display:inline-flex;overflow:hidden}.site-nav.is-island 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(prefers-reduced-motion:reduce){.site-nav__links,.site-nav__island,.site-nav__lens,.nav-panel,.dock,.sheet,.sheet__card{transition:none!important}.site-nav__live,.dock__live{animation:none!important}}@media (width<=640px){.meter,.tune{bottom:calc(150px + env(safe-area-inset-bottom,0px))!important}.scroll-indicator{bottom:calc(104px + env(safe-area-inset-bottom,0px))}}.nav-notes{border:1px solid color-mix(in srgb, var(--sodium-300) 35%, transparent);color:var(--text);background:#ebbd540f;border-radius:12px;grid-template-columns:auto 1fr auto;align-items:center;gap:2px 10px;margin-top:10px;padding:10px 12px;text-decoration:none;display:grid}.nav-notes:hover{border-color:var(--sodium-300)}.nav-notes__icon,.track-notes__icon{border:1.5px solid var(--sodium-300);width:12px;height:15px;box-shadow:inset 3px 0 0 -1.5px var(--sodium-300);border-radius:2px 3px 3px 2px}.nav-notes__title{font:600 .9rem var(--font-body)}.nav-notes__count{font:600 .78rem var(--font-body);color:var(--sodium-300)}.nav-notes__text{font:400 .8rem/1.4 var(--font-body);color:var(--text-3);grid-column:2/-1}.nav-path__bp{font:600 .76rem/1.3 var(--font-body);color:var(--hgamma-300);margin:5px 0 2px 12px;text-decoration:none;display:inline-block}.nav-path__bp:hover{text-underline-offset:3px;text-decoration:underline}.site-nav__transmission{z-index:1;cursor:pointer;align-items:center;gap:5px;display:inline-flex;position:relative}.site-nav__transmission[hidden]{display:none!important}.site-nav__transmission-dot{background:var(--teal,var(--accent,#2dd4bf));width:6px;height:6px;box-shadow:0 0 8px rgba(var(--teal-rgb,45, 212, 191), .75);border-radius:50%;flex:none;margin-left:2px;animation:2.2s ease-in-out infinite pulseTransmissionDot;display:inline-block}.site-nav__transmission-dot[hidden]{display:none!important}@keyframes pulseTransmissionDot{0%,to{opacity:1;box-shadow:0 0 10px rgba(var(--teal-rgb,45, 212, 191), .85);transform:scale(1)}50%{opacity:.35;box-shadow:0 0 2px rgba(var(--teal-rgb,45, 212, 191), .25);transform:scale(.8)}}.broadcast-overlay{z-index:1000;-webkit-backdrop-filter:blur(10px);padding:var(--space-md);opacity:0;pointer-events:none;background:#04060cc7;justify-content:center;align-items:center;transition:opacity .22s cubic-bezier(.16,1,.3,1);display:flex;position:fixed;inset:0}.broadcast-overlay.is-open{opacity:1;pointer-events:auto}.broadcast-modal{border-radius:var(--radius-xl);width:100%;max-width:540px;max-height:85vh;box-shadow:0 24px 60px #000000b3, 0 0 0 1px rgba(var(--teal-rgb), .18);padding:var(--space-xl);background:#0d111cf2;border:1px solid #ffffff24;transition:transform .24s cubic-bezier(.16,1,.3,1);overflow-y:auto;transform:scale(.96)translateY(8px)}.broadcast-overlay.is-open .broadcast-modal{transform:scale(1)translateY(0)}.broadcast-modal__head{justify-content:space-between;align-items:flex-start;gap:var(--space-md);margin-bottom:var(--space-md);padding-bottom:var(--space-sm);border-bottom:1px solid 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0;letter-spacing:-.01em;font-size:1.45rem;font-weight:600;line-height:1.3}.broadcast-modal__body{font:400 .94rem/1.65 var(--font-body);color:var(--text-2);margin-bottom:var(--space-xl)}.broadcast-modal__body p{margin:0 0 1em}.broadcast-modal__body p:last-child{margin-bottom:0}.broadcast-modal__foot{padding-top:var(--space-md);border-top:1px solid #ffffff14;justify-content:flex-end;display:flex}.broadcast-modal__dismiss{padding:8px 20px;font-size:.86rem}.dash{max-width:1180px}.dash-head{justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:22px;display:flex}.dash-title{font:600 clamp(1.8rem, 3.4vw, 2.5rem)/1.05 var(--font-display);letter-spacing:-.02em;color:var(--text);margin-top:8px}.dash-tabs,.dash-range{border-radius:var(--radius-full);border:1px solid var(--glass-line);background:var(--sim-tab-switch-bg,rgba(var(--ink-rgb), .04));flex-wrap:wrap;gap:4px;width:max-content;max-width:100%;padding:4px;display:flex}.dash-tabs{margin-bottom:24px}.dash-tabs 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12px}.dash-chart--mercury{--bar:var(--mercury-400)}.dash-chart--cherenkov{--bar:var(--cherenkov-400)}.dash-chart figcaption{font:600 .84rem/1.2 var(--font-body);color:var(--text-2);margin-bottom:10px}.dash-chart__plot{grid-template-columns:auto 1fr;gap:10px;display:grid;position:relative}.dash-chart__ticks{text-align:right;min-width:26px;font:500 .7rem/1 var(--font-mono);color:var(--text-3);flex-direction:column;justify-content:space-between;display:flex}.dash-chart svg{width:100%;height:150px;display:block;overflow:visible}.dash-chart--mercury svg,.dash-chart--cherenkov svg{height:90px}.dash-chart__grid{stroke:rgba(var(--ink-rgb), .08);stroke-width:1px;vector-effect:non-scaling-stroke}.dash-bar path{fill:var(--bar);opacity:.78;transition:opacity .15s}.dash-bar.is-on path{opacity:1}.dash-chart__tip{text-align:center;width:70px;font:500 .72rem/1.3 var(--font-body);color:var(--text-2);background:var(--glass-solid,#0a0e16f0);border:1px solid 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