input[aria-invalid=true],select[aria-invalid=true],textarea[aria-invalid=true],input[aria-invalid=true]:focus,select[aria-invalid=true]:focus,textarea[aria-invalid=true]:focus{border-color:var(--danger, #ef4444);box-shadow:0 0 0 3px #ef44442e;outline:none}.field-hint{position:fixed;z-index:9000;max-width:min(320px,calc(100vw - 32px));margin:0;padding:8px 12px;color:#b42318;border:1px solid #f3c2c8;border-radius:10px;background:#fff;box-shadow:0 6px 20px #0d1b4c29;font-size:14px;font-weight:600;line-height:1.3}.field-hint:before{content:"";position:absolute;top:-6px;left:18px;width:10px;height:10px;border-top:1px solid #f3c2c8;border-left:1px solid #f3c2c8;background:#fff;transform:rotate(45deg)}.graph-transition{position:fixed;inset:0;z-index:9999;overflow:hidden;isolation:isolate;contain:layout paint;color:#14213d;background:#fff;transition:opacity .18s ease}.graph-transition.exiting{opacity:0;pointer-events:none}.graph-transition-svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.graph-transition-cover{position:absolute;top:0;left:0;width:100%;height:calc(100% + 160px);background:linear-gradient(to bottom,#fff calc(100% - 160px),#fff0);will-change:transform;animation:graph-transition-rise 1.1s linear forwards}.graph-transition-edge{fill:none;stroke:#e4e7ec;stroke-width:1.3;stroke-linecap:round}.graph-transition-edge.accent{stroke:#dadee5;stroke-width:1.7}.graph-transition-nodes{opacity:0;animation:graph-transition-nodes .24s ease-out calc(var(--delay) + .12s) forwards}.graph-transition-node{fill:#fff;stroke:#dadee5;stroke-width:1.1}.graph-transition-node.major{fill:#dadee5;stroke:#fff;stroke-width:1.2}.graph-transition-info{position:absolute;left:50%;top:40%;z-index:2;width:min(340px,calc(100vw - 48px));padding:20px 22px 18px;border:1px solid #eceef2;border-radius:16px;background:#fffffff5;box-shadow:0 14px 36px #14213d14;transform:translate(-50%,-50%)}.graph-transition-info strong{display:block;margin-bottom:14px;font-size:clamp(19px,3vw,22px);font-weight:600;letter-spacing:-.01em;text-align:center}.graph-transition-track{height:3px;overflow:hidden;border-radius:3px;background:#e3ecfc}.graph-transition-track i{display:block;width:38%;height:100%;background:linear-gradient(90deg,transparent,#2a6bf2 70%,#015bfe);animation:graph-transition-track 1.55s ease-in-out infinite}.graph-transition-way-out{position:fixed;top:max(20px,env(safe-area-inset-top));right:20px;z-index:10000;font-size:14px;animation:graph-transition-nodes .2s ease-out 2s both}.graph-transition-way-out a{color:#0870db}@keyframes graph-transition-rise{to{transform:translateY(-100%)}}@keyframes graph-transition-nodes{0%{opacity:0}to{opacity:1}}@keyframes graph-transition-track{0%{transform:translate(-110%)}to{transform:translate(300%)}}@media(prefers-reduced-motion:reduce){.graph-transition,.graph-transition *,.graph-transition-way-out{animation:none!important;transition-duration:0ms!important}.graph-transition-cover{display:none}.graph-transition-nodes{opacity:1}.graph-transition-track i{transform:translate(70%)}}.graph-loader{display:grid;place-items:center;min-height:120px;padding:8px;animation:graph-loader-in .12s ease-out .08s both}.graph-loader svg{width:min(180px,100%);height:auto;overflow:visible}.graph-loader-side{fill:none;stroke:#e3ebfa;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.graph-loader-trail{fill:none;stroke:#2a6bf2;stroke-width:4;stroke-linecap:round}.graph-loader-vertex{fill:#d6e3fb}@keyframes graph-loader-in{0%{opacity:0}to{opacity:1}}.paywall h1{font-size:clamp(24px,4vw,34px);line-height:1.15;margin:0}.plan-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}.plan-card{position:relative;display:grid;gap:10px;padding:20px;border:1px solid var(--line, #dde2ee);border-radius:16px;background:#fff}.plan-card.featured{border-color:var(--accent, #2b6bf3);box-shadow:0 8px 28px #2b6bf31f}.plan-badge{position:absolute;top:-11px;left:18px;background:var(--accent, #2b6bf3);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px}.plan-card h2{margin:0;font-size:20px}.plan-price{margin:0;display:flex;align-items:baseline;gap:6px}.plan-price b{font-size:30px;font-weight:800;letter-spacing:-.01em}.plan-price span{color:#7b849c}.plan-desc{margin:0;color:#4a5470}.plan-benefits{margin:0;padding-left:18px;color:#4a5470;font-size:14.5px;display:grid;gap:4px}.subscription-box{display:grid;gap:6px}.subscription-box .status{font-weight:600}.pw{position:relative;max-width:560px;margin:0 auto}.pw h1{margin:0;padding-right:36px;font-size:clamp(24px,4.4vw,32px);line-height:1.2}.pw .lede{margin:0}.pw-close{position:absolute;top:-4px;right:-4px;width:40px;height:40px;padding:0;border:0;border-radius:50%;background:transparent;color:#7b849c;font-size:26px;line-height:1;cursor:pointer}.pw-close:hover{background:#0000000d}.pw-moment{margin:0;padding-right:36px;color:#4a5470}.pw-offer{display:grid;gap:14px}.pw-choice{display:flex;gap:4px;padding:4px;border-radius:12px;background:#0000000d}.pw-choice button{flex:1 1 0;min-height:44px;padding:6px 8px;border:0;border-radius:9px;background:transparent;color:#4a5470;font:inherit;font-weight:600;cursor:pointer}.pw-choice button[aria-pressed=true]{background:#fff;color:inherit;box-shadow:0 1px 3px #00000024}.pw-choice small{display:block;font-size:12px;font-weight:500;color:var(--accent, #2b6bf3)}.pw-price{margin:4px 0 0;display:flex;flex-wrap:wrap;align-items:baseline;gap:8px}.pw-price b{font-size:34px;font-weight:800;letter-spacing:-.01em}.pw-price span,.pw-per-month{color:#7b849c}.pw-per-month{margin:-10px 0 0}.pw-benefits{margin:0;padding-left:18px;color:#4a5470;display:grid;gap:6px}.pw-buy{width:100%;min-height:48px}.pw-trust{margin:0;color:#7b849c;font-size:14px;text-align:center}.pw-promo{font-size:14px;color:#7b849c}.pw-promo summary{cursor:pointer}.pw-promo .promo-box{margin-top:8px}.pw-reduced{position:relative;display:grid;gap:12px;text-align:center}.pw-reduced h2{margin:0;padding:0 32px}.pw-reduced button.text-link{justify-self:center;padding:6px 10px;border:0;background:none;box-shadow:none;cursor:pointer}.pw-ask{text-align:left}.pw-ask h1{padding-right:0}.pw-link{width:100%;font-size:14px}.pw-self{font-size:14px;color:#7b849c;background:none;border:0;padding:0;cursor:pointer;text-align:left}.pw-gate{max-width:480px;margin:0 auto}.pw-gate h1{margin:0;font-size:24px}.pw-done{display:grid;gap:8px;margin:0 0 14px;padding:14px 16px;border-radius:14px;background:#2b6bf314}.pw-done p{margin:0}.pw-paid-note{margin:8px 0 0;font-size:14px;color:#4a5470}@property --gl-primary{syntax: "<color>"; inherits: true; initial-value: #015bfe;}.gl{--gl-font-display: "Source Serif 4", Georgia, "Times New Roman", serif;--gl-font-text: Onest, "Segoe UI", system-ui, -apple-system, sans-serif;--gl-font-hand: "Marck Script", "Segoe Script", cursive;--gl-font-math: "Source Serif 4", "Cambria Math", Cambria, serif;--gl-primary: #015bfe;--gl-on-primary: #fff;--gl-primary-hover: color-mix(in oklab, var(--gl-primary) 86%, #000);--gl-primary-ink: color-mix(in oklab, var(--gl-primary) 84%, var(--gl-ink));--gl-primary-line: color-mix(in oklab, var(--gl-primary) 34%, var(--gl-surface));--gl-primary-soft: color-mix(in oklab, var(--gl-primary) 11%, var(--gl-surface));--gl-primary-wash: color-mix(in oklab, var(--gl-primary) 5%, var(--gl-surface));--gl-primary-glow: color-mix(in oklab, var(--gl-primary) 40%, transparent);--gl-bg: #fdfdfc;--gl-oat: #f6f4f1;--gl-oat-deep: #f0ece6;--gl-surface: #fff;--gl-surface-2: #f7f7f8;--gl-glass: rgb(255 255 255 / .6);--gl-chip: #f3f2ef;--gl-ink: #000;--gl-ink-2: rgb(0 0 0 / .64);--gl-ink-3: rgb(0 0 0 / .52);--gl-ink-4: rgb(0 0 0 / .3);--gl-line: rgb(0 0 0 / .08);--gl-line-strong: rgb(0 0 0 / .13);--gl-grid: rgb(0 0 0 / .06);--gl-logo-cut: var(--gl-surface);--gl-ok: #15b441;--gl-warn: #f59e0b;--gl-bad: #f04848;--gl-off: #b9b9b9;--gl-ok-soft: color-mix(in oklab, var(--gl-ok) 12%, var(--gl-surface));--gl-ok-ink: color-mix(in oklab, var(--gl-ok) 78%, var(--gl-ink));--gl-warn-soft: color-mix(in oklab, var(--gl-warn) 15%, var(--gl-surface));--gl-bad-soft: color-mix(in oklab, var(--gl-bad) 10%, var(--gl-surface));--gl-illus-hi: #f7f7f7;--gl-illus-lo: #d4d4d4;--gl-illus-edge: #cfcfcf;--gl-illus-shadow: rgb(0 0 0 / .08);--gl-shadow-sm: 0 1px 2px rgb(0 0 0 / .04), 0 4px 12px rgb(0 0 0 / .04);--gl-shadow-md: 0 1px 2px rgb(0 0 0 / .04), 0 14px 34px rgb(0 0 0 / .07);--gl-shadow-lg: 0 2px 6px rgb(0 0 0 / .03), 0 32px 72px rgb(40 30 20 / .11);--gl-max: 1240px;--gl-gutter: 40px;--gl-header-h: 58px;--gl-header-top: 14px;--gl-note-room: clamp(96px, 14vh, 132px);min-height:100dvh;overflow-x:clip;color:var(--gl-ink);background:var(--gl-bg);font-family:var(--gl-font-text);font-size:16px;line-height:1.5;font-optical-sizing:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;transition:--gl-primary .5s ease}.gl[data-level=base]{--gl-primary: #eb4401}.gl[data-level=advanced]{--gl-primary: #15b441}.gl[data-level=olympiad]{--gl-primary: #015bfe}.gl[data-theme=dark]{color-scheme:dark;--gl-bg: #111;--gl-oat: #191817;--gl-oat-deep: #201f1d;--gl-surface: #1e1e1e;--gl-surface-2: #262626;--gl-glass: rgb(255 255 255 / .05);--gl-chip: #2b2b2b;--gl-ink: #fff;--gl-ink-2: rgb(255 255 255 / .74);--gl-ink-3: rgb(255 255 255 / .58);--gl-ink-4: rgb(255 255 255 / .34);--gl-line: rgb(255 255 255 / .09);--gl-line-strong: rgb(255 255 255 / .16);--gl-grid: rgb(255 255 255 / .04);--gl-primary-soft: color-mix(in oklab, var(--gl-primary) 22%, var(--gl-surface));--gl-primary-wash: color-mix(in oklab, var(--gl-primary) 10%, var(--gl-surface));--gl-primary-line: color-mix(in oklab, var(--gl-primary) 50%, var(--gl-surface));--gl-ok-soft: color-mix(in oklab, var(--gl-ok) 22%, var(--gl-surface));--gl-warn-soft: color-mix(in oklab, var(--gl-warn) 22%, var(--gl-surface));--gl-bad-soft: color-mix(in oklab, var(--gl-bad) 20%, var(--gl-surface));--gl-off: #6b6b6b;--gl-illus-hi: #3d3d3d;--gl-illus-lo: #262626;--gl-illus-edge: #181818;--gl-illus-shadow: rgb(0 0 0 / .45);--gl-shadow-sm: 0 1px 2px rgb(0 0 0 / .3), 0 4px 12px rgb(0 0 0 / .25);--gl-shadow-md: 0 1px 2px rgb(0 0 0 / .3), 0 14px 34px rgb(0 0 0 / .35);--gl-shadow-lg: 0 2px 6px rgb(0 0 0 / .3), 0 32px 72px rgb(0 0 0 / .5)}html:has(.gl),html:has(.gl) body,html:has(.gl) #root{background:#fdfdfc}html:has(.gl[data-theme=dark]),html:has(.gl[data-theme=dark]) body,html:has(.gl[data-theme=dark]) #root{background:#111}html:has(.gl){scroll-padding-top:calc(var(--gl-anchor-gap, 96px))}@media(prefers-reduced-motion:no-preference){html:has(.gl){scroll-behavior:smooth}}.gl :where(*,*:before,*:after){box-sizing:border-box}.gl :where(h1,h2,h3,h4,p,ul,ol,figure,fieldset){margin:0}.gl :where(ul,ol){padding:0;list-style:none}.gl :where(fieldset){padding:0;border:0;min-width:0}.gl :where(a){color:inherit;text-decoration:none}.gl :where(button){font:inherit;color:inherit;cursor:pointer}.gl :where(svg){flex:none}.gl :where(b,strong){font-weight:500}.gl :where(:focus-visible){outline:3px solid color-mix(in oklab,var(--gl-primary) 55%,transparent);outline-offset:3px}.gl-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.gl-container{width:min(var(--gl-max),100% - 2 * var(--gl-gutter));margin-inline:auto}.gl-display,.gl-h2,.gl-h3-display{font-family:var(--gl-font-display);font-weight:600;color:var(--gl-ink);font-kerning:normal}.gl-display{font-size:clamp(44px,4.55vw,72px);line-height:1.02;letter-spacing:-.032em}.gl-h2{font-size:clamp(38px,4.6vw,68px);line-height:1.02;letter-spacing:-.032em}.gl-h2-md{font-size:clamp(34px,3.5vw,54px);line-height:1.05;letter-spacing:-.028em}.gl-h2-sm{font-size:clamp(28px,2.5vw,38px);line-height:1.1;letter-spacing:-.024em}.gl-h3-display{font-size:clamp(28px,2.5vw,38px);line-height:1.08;letter-spacing:-.026em}.gl-lead{color:var(--gl-ink-3);font-size:clamp(18px,1.5vw,22px);line-height:1.45;letter-spacing:-.005em}.gl-eyebrow{color:var(--gl-ink-3);font-size:18px;line-height:1.3}.gl-accent{color:var(--gl-primary-ink)}.gl-math{font-family:var(--gl-font-math);font-style:normal;letter-spacing:0}.gl-math i{font-style:italic;padding-right:.04em}.gl-text-link{display:inline-flex;align-items:center;gap:6px;color:var(--gl-primary-ink);font-size:14px;font-weight:500}.gl-text-link svg{width:16px;height:16px;transition:transform .2s}.gl-text-link:hover svg{transform:translate(3px)}.gl-btn{--h: 52px;display:inline-flex;align-items:center;justify-content:center;gap:10px;height:var(--h);padding:0 calc(var(--h) * .5);border:1px solid transparent;border-radius:999px;font-family:var(--gl-font-text);font-size:17px;font-weight:500;line-height:1;letter-spacing:-.005em;white-space:nowrap;text-decoration:none;transition:background-color .2s,color .2s,border-color .2s,box-shadow .2s,transform .12s;-webkit-user-select:none;user-select:none}.gl-btn svg{width:1.15em;height:1.15em}.gl-btn:active{transform:translateY(1px) scale(.99)}.gl-btn-xs{--h: 36px;padding:0 16px;font-size:13px;gap:6px}.gl-btn-sm{--h: 46px;font-size:16px}.gl-btn-md{--h: 56px;padding:0 30px;font-size:17px}.gl-btn-lg{--h: 66px;padding:0 44px;font-size:20px}.gl-btn-block{width:100%}.gl-btn-primary{color:var(--gl-on-primary);background:var(--gl-primary);box-shadow:0 12px 26px -12px var(--gl-primary-glow)}.gl-btn-primary:hover{background:var(--gl-primary-hover);box-shadow:0 16px 30px -12px var(--gl-primary-glow)}.gl-btn-ink{color:var(--gl-surface);background:var(--gl-ink)}.gl-btn-ink:hover{background:color-mix(in oklab,var(--gl-ink) 80%,var(--gl-surface))}.gl-btn-outline{color:var(--gl-ink);background:var(--gl-surface);border-color:var(--gl-line-strong)}.gl-btn-outline:hover{border-color:var(--gl-ink-4)}.gl-btn-ghost{color:var(--gl-ink);background:var(--gl-surface);box-shadow:var(--gl-shadow-sm),inset 0 0 0 1px var(--gl-line)}.gl-btn-ghost:hover{box-shadow:var(--gl-shadow-md),inset 0 0 0 1px var(--gl-line-strong)}.gl-btn-ok{color:#fff;background:var(--gl-ok)}.gl-arrow-circle{display:inline-grid;place-items:center;width:46px;height:46px;flex:none;color:var(--gl-ink);border:1px solid var(--gl-line-strong);border-radius:50%;background:var(--gl-surface);transition:background-color .2s,color .2s,border-color .2s,transform .2s}.gl-arrow-circle svg{width:19px;height:19px}.gl-arrow-sm{width:32px;height:32px}.gl-arrow-sm svg{width:15px;height:15px}.gl-tile{display:inline-grid;place-items:center;width:52px;height:52px;flex:none;color:var(--gl-ink);border-radius:15px;background:var(--gl-chip)}.gl-tile svg{width:24px;height:24px}.gl-tile-lg{width:72px;height:72px;border-radius:18px}.gl-tile-lg svg{width:30px;height:30px}.gl-header{position:sticky;top:var(--gl-header-top);z-index:50;width:min(var(--gl-max),100% - 2 * var(--gl-gutter));margin:var(--gl-header-top) auto 0}.gl-header-bar{display:flex;align-items:center;gap:20px;height:var(--gl-header-h);padding:0 8px 0 22px;border:1px solid var(--gl-line);border-radius:999px;background:color-mix(in oklab,var(--gl-surface) 86%,transparent);-webkit-backdrop-filter:saturate(1.6) blur(18px);backdrop-filter:saturate(1.6) blur(18px);box-shadow:var(--gl-shadow-md)}.gl-logo{display:inline-flex;align-items:center;gap:7px;flex:none;color:var(--gl-ink);font-size:25px;font-weight:600;letter-spacing:-.03em;line-height:1}.gl-logo-mark{width:28px;height:28px;color:var(--gl-ink)}.gl-logo-mark.gl-logo-pencil{width:26px;height:26px;margin:0 -3px;object-fit:contain;filter:grayscale(1) contrast(1.15)}.gl-level-switch{display:flex;align-items:center;gap:4px;margin:0 auto}.gl-level-tab{position:relative;display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;color:var(--gl-ink-3);border:0;border-radius:999px;background:transparent;font-size:16px;transition:color .2s,background-color .25s}.gl-level-tab:before{content:"";width:7px;height:7px;margin-left:-4px;border-radius:50%;background:var(--tone);transform:scale(0);transition:transform .25s cubic-bezier(.3,1.6,.5,1)}.gl-level-tab:not([aria-pressed=true]):before{width:0;margin-left:-8px}.gl-level-tab:hover{color:var(--gl-ink)}.gl-level-tab[aria-pressed=true]{color:var(--gl-primary-ink);background:var(--gl-primary-soft)}.gl-level-tab[aria-pressed=true]:before{transform:scale(1)}.gl-header-actions{display:flex;align-items:center;gap:8px;flex:none}.gl-header-actions .gl-btn-sm{--h: 42px;padding:0 26px;font-size:15.5px}.gl-header-start{max-width:160px;overflow:hidden;transition:max-width .4s cubic-bezier(.2,.8,.2,1),padding .4s cubic-bezier(.2,.8,.2,1),margin .4s,opacity .3s,background-color .2s}.gl-header:not(.is-past) .gl-header-start{max-width:0;margin-left:-8px;padding-inline:0;opacity:0;pointer-events:none}.gl-header-login{max-width:160px;overflow:hidden;transition:max-width .4s cubic-bezier(.2,.8,.2,1),padding .4s cubic-bezier(.2,.8,.2,1),margin .4s,opacity .3s,border-width .4s,visibility 0s}.gl-burger{display:none;place-items:center;width:42px;height:42px;color:var(--gl-ink);border:0;border-radius:50%;background:transparent}.gl-burger svg{width:26px;height:26px}.gl-menu{position:absolute;top:calc(100% + 10px);left:0;right:0;display:grid;gap:14px;padding:18px;border:1px solid var(--gl-line);border-radius:28px;background:var(--gl-surface);box-shadow:var(--gl-shadow-lg);transform-origin:top center;animation:gl-pop .22s cubic-bezier(.2,.8,.2,1)}.gl-menu[hidden]{display:none}.gl-menu-label{color:var(--gl-ink-3);font-size:13px}.gl-menu-levels{display:grid;grid-template-columns:repeat(3,auto);margin:-4px 0 0;padding:3px;border-radius:999px;background:var(--gl-surface-2)}.gl-menu-levels .gl-level-tab{justify-content:center;min-width:0;height:40px;padding:0 8px;font-size:clamp(13px,3.75vw,14.5px);letter-spacing:-.01em;white-space:nowrap}.gl-menu-levels .gl-level-tab:before{display:none}.gl-menu-levels .gl-level-tab[aria-pressed=true]{background:var(--gl-surface);box-shadow:var(--gl-shadow-sm)}.gl-menu-links{display:grid;border-top:1px solid var(--gl-line)}.gl-menu-links a{display:flex;align-items:center;justify-content:space-between;min-height:52px;border-bottom:1px solid var(--gl-line);font-size:17px}.gl-menu-links svg{width:18px;height:18px;color:var(--gl-ink-4)}.gl-hero{position:relative;isolation:isolate;margin-top:calc(-1 * (var(--gl-header-h) + var(--gl-header-top)));padding:calc(var(--gl-header-h) + var(--gl-header-top) + var(--gl-note-room)) 0 clamp(20px,3.5vh,52px);background:var(--gl-oat)}.gl-hero:before{content:"";position:absolute;inset:0 0 auto;z-index:-1;height:calc(var(--gl-header-h) + var(--gl-header-top) + var(--gl-note-room) - 14px);background-image:linear-gradient(var(--gl-grid) 1px,transparent 1px),linear-gradient(90deg,var(--gl-grid) 1px,transparent 1px);background-size:30px 30px;background-position:center -1px;-webkit-mask-image:linear-gradient(#000,rgb(0 0 0 / .55) 50%,transparent);mask-image:linear-gradient(#000,rgb(0 0 0 / .55) 50%,transparent)}.gl-hero-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);align-items:center;gap:clamp(40px,5vw,80px)}.gl-hero-lead{margin-top:clamp(16px,2.6vh,26px)}.gl-hero-lead b{color:var(--gl-ink)}.gl-hero-actions{display:flex;flex-wrap:wrap;gap:18px;margin-top:clamp(26px,4.4vh,44px)}.gl-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:clamp(24px,4.2vh,40px)}.gl-chips li{display:inline-flex;align-items:center;gap:10px;height:50px;padding:0 18px 0 14px;color:var(--gl-ink-2);border:1px solid var(--gl-line);border-radius:999px;background:var(--gl-surface);font-size:16px}.gl-chips svg{width:23px;height:23px;color:var(--gl-ink-3)}.gl-chip-phone-text{display:none}.gl-hero-visual{position:relative}.gl-video-placeholder{display:grid;place-content:center;justify-items:center;gap:14px;width:100%;aspect-ratio:519 / 483;color:var(--gl-ink-3);border:1px solid 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svg{width:15px;height:15px;color:var(--gl-ok)}.gl-verdict{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:600;opacity:0;transform:translateY(3px);transition:opacity .2s,transform .2s}.gl-verdict svg{width:16px;height:16px}.gl-verdict.is-right{color:var(--gl-ok-ink);opacity:1;transform:none}.gl-verdict.is-wrong{color:var(--gl-bad);opacity:1;transform:none}.gl-quiz-q{margin-top:10px;font-size:15px;font-weight:500}.gl-quiz-eq{margin:4px 0 10px;font-size:25px;line-height:1.3;text-align:center}.gl-quiz-eq sup{font-size:.6em;line-height:0;vertical-align:.7em;margin-left:.03em}.gl-options{display:grid;gap:8px}.gl-option{position:relative;display:flex;align-items:center;gap:14px;min-height:46px;padding:0 14px;border:1px solid var(--gl-line-strong);border-radius:12px;background:var(--gl-surface);font-size:14px;font-weight:400;cursor:pointer;transition:border-color .2s,background-color .2s,box-shadow .2s}.gl-option:hover{border-color:var(--gl-ink-4)}.gl-option 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svg{width:44px;height:44px}.gl-level-text strong{display:block;font-family:var(--gl-font-display);font-size:27px;font-weight:600;line-height:1.12;letter-spacing:-.025em}.gl-level-text>span{display:block;margin-top:8px;color:var(--gl-ink-3);font-size:16px;line-height:1.5}.gl-level-chevron{display:none;width:22px;height:22px;color:var(--gl-ink-3)}.gl-duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:24px}.gl-duo-card{position:relative;overflow:hidden;padding:40px 36px 36px;border-radius:30px}.gl-duo-card>p{max-width:470px;margin-top:14px;color:var(--gl-ink-2);font-size:16.5px;line-height:1.5}.gl-upgrade{background:var(--gl-oat-deep)}.gl-check{background:var(--gl-primary-wash);border:1px solid color-mix(in oklab,var(--gl-primary) 9%,transparent);scroll-margin-top:110px}.gl-ladder{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));align-items:start;gap:10px;margin-top:40px;padding-top:44px}.gl-ladder li{position:relative;margin-top:calc((3 - var(--i)) * 16px)}.gl-ladder-dot{position:absolute;top:-34px;left:26px;width:16px;height:16px;border:3px solid var(--tone);border-radius:50%;background:var(--gl-surface)}.gl-ladder-route{position:absolute;top:-50px;left:44px;width:calc(100% - 8px);height:30px;overflow:visible}.gl-ladder-route path{fill:none;stroke:var(--gl-ink-4);stroke-width:1.6;stroke-dasharray:3 5;stroke-linecap:round}.gl-ladder-end{width:60px}.gl-ladder-end path{stroke-dasharray:none}.gl-ladder-card{display:flex;flex-direction:column;gap:4px;min-height:150px;padding:15px 13px 17px;border:1.5px solid color-mix(in oklab,var(--tone) 22%,var(--gl-surface));border-radius:18px;background:color-mix(in oklab,var(--tone) 6%,var(--gl-surface));box-shadow:0 10px 22px -16px color-mix(in oklab,var(--tone) 60%,transparent)}.gl-ladder-icon{color:var(--tone)}.gl-ladder-icon svg{width:28px;height:28px}.gl-ladder-card 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