.nb-cta{--cta-accent:var(--ds-primary-text,#78c9ff);--cta-line:var(--ds-stroke-default,var(--border));z-index:60;border-top:1px solid var(--cta-line);background:linear-gradient(90deg, color-mix(in srgb, var(--cta-accent) 10%, transparent), transparent 40%), var(--ds-surface-default,#060a0f);color:var(--text);transition:transform .42s cubic-bezier(.22,1,.36,1);position:fixed;bottom:0;left:0;right:0;transform:translateY(calc(100% + 8px));box-shadow:0 -18px 44px #00000059}.nb-cta.is-open{transform:translateY(0)}.nb-cta__rule{background:linear-gradient(90deg, transparent, var(--cta-accent) 22%, #9fd8ff 64%, var(--cta-accent));transform-origin:0;pointer-events:none;height:2px;position:absolute;top:-1px;left:0;right:0}.nb-cta__inner{grid-template-columns:minmax(0,1fr) minmax(0,520px) auto;align-items:center;gap:16px 28px;width:min(1180px,100% - 32px);margin:0 auto;padding:14px 0;display:grid}.nb-cta__lead{align-items:center;gap:14px;min-width:0;display:flex}.nb-cta__mark{flex:none;width:34px;height:34px}.nb-cta__copy{min-width:0}.nb-cta__title{color:var(--text);font-family:var(--display);letter-spacing:-.01em;margin:0;font-size:17px;font-weight:750}.nb-cta__facts{color:var(--text-muted);flex-wrap:wrap;margin:4px 0 0;padding:0;font-size:12px;list-style:none;display:flex}.nb-cta__facts li+li:before{content:"·";margin:0 8px}.nb-cta__short{display:none}.nb-cta__form{grid-template-columns:minmax(0,1fr) auto;gap:6px 10px;display:grid}.nb-cta__field{border:1px solid var(--cta-line);border-radius:var(--ds-radius-control,8px);background:var(--ds-surface-transparent-subtle,var(--surface-soft));align-items:center;height:46px;transition:border-color .15s,box-shadow .15s;display:flex}.nb-cta__field:focus-within{border-color:var(--ds-primary-border-strong,#0696f1);box-shadow:0 0 0 3px var(--ds-primary-border,#0696f140)}.nb-cta__field.is-invalid{border-color:#e7a63cbf}.nb-cta__code{border-right:1px solid var(--cta-line);color:var(--text);font-family:var(--mono);align-self:stretch;align-items:center;padding:0 11px 0 13px;font-size:14px;font-weight:700;display:flex}.nb-cta__inputwrap{flex:1;align-self:stretch;min-width:0;display:flex;position:relative}.nb-cta__field input{width:100%;min-width:0;color:var(--text);font-family:var(--mono);letter-spacing:.04em;background:0 0;border:0;outline:0;padding:0 12px;font-size:15px;font-weight:700}.nb-cta__field input::placeholder{color:var(--text-muted);font-family:var(--font,inherit);letter-spacing:0;font-weight:500}.nb-cta__ph{color:var(--text-muted);white-space:nowrap;pointer-events:none;align-items:center;font-size:15px;font-weight:500;display:flex;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.nb-cta__caret{background:var(--cta-accent);width:1.5px;height:17px;margin-left:2px;animation:1s step-end infinite nb-cta-caret;display:inline-block}.nb-cta__go{border:1px solid var(--ds-primary-border-strong,#0696f1);border-radius:var(--ds-radius-control,8px);color:#fff;white-space:nowrap;cursor:pointer;background:linear-gradient(135deg,#1598df,#0068b3);justify-content:center;align-items:center;gap:8px;height:46px;padding:0 22px;font-size:15px;font-weight:800;display:inline-flex}.nb-cta__go:hover{filter:brightness(1.08)}.nb-cta__go:hover .nb-cta__arrow{transform:translate(3px)}.nb-cta__arrow{transition:transform .2s}.nb-cta__note{color:var(--text-muted);grid-column:1/-1;margin:0;font-size:11px;line-height:1.45}.nb-cta__note a{color:var(--text-secondary);text-underline-offset:2px;text-decoration:underline}.nb-cta__note.is-error{color:#e7a63c;font-weight:600}.nb-cta__close{width:32px;height:32px;color:var(--text-muted);cursor:pointer;background:0 0;border:0;border-radius:50%;place-items:center;display:grid}.nb-cta__close:hover{background:var(--ds-surface-transparent-subtle,var(--surface-soft));color:var(--text)}.nb-cta[data-intro] .nb-cta__rule{animation:.64s cubic-bezier(.65,0,.35,1) .12s both nb-cta-draw}.nb-cta[data-intro] .nb-cta__inner{animation:.56s cubic-bezier(.65,0,.35,1) .26s both nb-cta-write}.nb-cta[data-intro] .nb-cta__arrow{animation:.5s cubic-bezier(.3,1.6,.5,1) .86s both nb-cta-nudge}@keyframes nb-cta-draw{0%{transform:scaleX(0)}to{transform:scaleX(1)}}@keyframes nb-cta-write{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes nb-cta-nudge{0%{transform:translate(0)}50%{transform:translate(5px)}to{transform:translate(0)}}@keyframes nb-cta-caret{50%{opacity:0}}@media (max-width:980px){.nb-cta__inner{grid-template-columns:minmax(0,1fr) auto;row-gap:12px}.nb-cta__form{grid-area:2/1/auto/-1}.nb-cta__close{grid-area:1/2;align-self:start}}@media (max-width:640px){.nb-cta__inner{width:calc(100% - 32px);padding:11px 0 calc(11px + env(safe-area-inset-bottom));gap:10px}.nb-cta__lead{gap:12px}.nb-cta__mark{width:28px;height:28px}.nb-cta__title{white-space:nowrap;text-overflow:ellipsis;font-size:15px;overflow:hidden}.nb-cta__facts{white-space:nowrap;flex-wrap:nowrap;margin-top:3px;font-size:11px}.nb-cta__facts li+li:before{margin:0 6px}.nb-cta__facts .is-wide,.nb-cta__long{display:none}.nb-cta__short{display:inline}.nb-cta__field,.nb-cta__go{height:44px}.nb-cta__go{gap:6px;padding:0 13px;font-size:14px}.nb-cta__code{padding:0 9px 0 11px}.nb-cta__field input,.nb-cta__ph{font-size:14px}.nb-cta__ph{left:12px}.nb-cta__note{display:none}.nb-cta__note.is-error{display:block}.nb-cta__close{width:28px;height:28px;margin:-2px -4px 0 0}}@media (prefers-reduced-motion:reduce){.nb-cta{transition:none}.nb-cta *,.nb-cta:before{animation:none!important}}html[data-theme=light] .nb-cta{box-shadow:0 -12px 32px #0f233c1f}
.edu{--edu-accent:var(--ds-primary-text,#78c9ff);--edu-line:var(--ds-stroke-default,var(--border));--edu-card:var(--ds-surface-transparent-subtle,var(--surface-soft));margin-top:24px}.edu-band{padding:64px 0 0}.edu-split{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:start;gap:48px 72px;display:grid}.edu-eyebrow{color:var(--edu-accent);letter-spacing:.18em;text-transform:uppercase;margin:0 0 14px;font-size:11px;font-weight:700}.edu h2{color:var(--text);letter-spacing:-.03em;text-wrap:balance;margin:0;font-size:clamp(24px,2.4vw,32px);font-weight:750;line-height:1.15}.edu h3{color:var(--text);letter-spacing:-.01em;margin:0;font-size:16px;font-weight:700;line-height:1.3}.edu :where(p){margin:0}.edu h2,.edu h3,.edu-formula,.edu-example-stats dd,.edu-example-total{font-family:var(--display)}.edu-rule{background:var(--edu-accent);opacity:.85;border-radius:3px;width:52px;height:3px;margin-top:22px;display:block}.edu-intro{max-width:720px;color:var(--text-secondary);font-size:15px;line-height:1.6;margin-top:16px!important}.edu-center .edu-intro{margin-inline:auto}.edu-callout{border-left:3px solid var(--edu-accent);background:var(--edu-card);max-width:860px;color:var(--text-secondary);border-radius:0 10px 10px 0;padding:14px 18px;font-size:14px;line-height:1.65;margin:28px 0 0!important}.edu-lead-column{gap:24px;display:grid}.edu-lead{color:var(--text-secondary);padding-top:26px;font-size:16px;line-height:1.7}.edu-link{color:var(--edu-accent);border-bottom:1px solid;align-items:center;gap:6px;padding-bottom:4px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.edu-link:hover{opacity:.85}.edu-head .edu-link{margin-top:32px}.edu-link-end{width:fit-content;color:var(--text-secondary);margin:40px 0 0 auto;display:flex}.edu-steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin:44px 0 0;padding:0;list-style:none;display:grid}.edu-steps li{grid-template-rows:auto auto auto 1fr;gap:0;display:grid}.edu-step-number{align-items:center;gap:12px;display:flex}.edu-step-number b{background:var(--edu-accent);width:34px;height:34px;color:var(--ds-surface-default,#060a0f);border-radius:50%;flex:none;place-items:center;font-size:12px;font-weight:800;display:grid}.edu-step-number:after{content:"";background:var(--edu-line);flex:1;height:1px}.edu-mock{flex-wrap:wrap;gap:10px;margin:28px 0 30px;display:flex}.edu-mock-field{border:1px solid var(--edu-line);background:var(--edu-card);border-radius:8px;gap:6px;min-width:112px;padding:11px 14px;display:grid}.edu-mock-field small{color:var(--text-muted);font-size:11px}.edu-mock-field b{color:var(--text);font-family:var(--mono);font-size:13px;font-weight:700}.edu-mock-result{border:1px solid var(--edu-line);background:var(--edu-card);border-radius:8px;align-items:stretch;display:flex}.edu-mock-result .edu-mock-field{border:0;border-right:1px solid var(--edu-line);background:0 0;border-radius:0}.edu-mock-result a{color:var(--edu-accent);align-items:center;gap:4px;padding:0 16px;font-size:13px;font-weight:600;text-decoration:none;display:inline-flex}.edu-mock-result a:hover{text-underline-offset:3px;text-decoration:underline}.edu-mock-result a:focus-visible{outline:2px solid var(--edu-accent);outline-offset:-2px;border-radius:0 8px 8px 0}@media (prefers-reduced-motion:no-preference){html:has(.edu){scroll-behavior:smooth}}.edu-steps h3{margin-bottom:10px}.edu-steps p{color:var(--text-secondary);font-size:14px;line-height:1.65}.edu-formula{border-bottom:1px solid var(--edu-line);grid-template-columns:max-content 1fr;align-items:baseline;gap:18px 24px;margin:40px 0 0;padding-bottom:28px;display:grid}.edu-formula>div{display:contents}.edu-formula dt{color:var(--text);letter-spacing:-.01em;font-size:17px;font-weight:700}.edu-formula dd{color:var(--text-secondary);margin:0;font-size:17px}.edu-formula dd span{color:var(--text-muted);margin-right:14px}.edu-formula-note{color:var(--text-muted);grid-column:2;font-size:12px;line-height:1.55;margin-top:-12px!important}.edu-note{color:var(--text-muted);font-size:13px;line-height:1.6;margin-top:20px!important}.edu-formula sup{letter-spacing:.08em;font-size:.6em}.edu-vars{gap:12px;margin:24px 0 0;display:grid}.edu-vars div{grid-template-columns:48px 1fr;gap:12px;display:grid}.edu-vars dt{color:var(--text);font-family:var(--mono);font-size:13px;font-weight:700}.edu-vars dd{color:var(--text-secondary);margin:0;font-size:14px}.edu-example{border:1px solid var(--edu-line);background:var(--edu-card);border-radius:16px;padding:28px 32px}.edu-example h3{font-size:19px}.edu-example>p{color:var(--text-secondary);margin-top:14px;font-size:14px;line-height:1.7}.edu-example dl{margin:0}.edu-example-stats{grid-template-columns:repeat(var(--edu-stats,3), auto);border-bottom:1px solid var(--edu-line);justify-content:start;padding-bottom:24px;display:grid;margin-top:28px!important}.edu-example-stats div{border-left:1px solid var(--edu-line);padding:0 28px}.edu-example-stats div:first-child{border-left:0;padding-left:0}.edu-example-stats dt{color:var(--text-muted);font-size:12px}.edu-example-stats dd{color:var(--text);letter-spacing:-.02em;white-space:nowrap;margin:6px 0 0;font-size:20px;font-weight:750}.edu-example-rows{border-bottom:1px solid var(--edu-line);gap:14px;padding:22px 0;display:grid}.edu-example-rows div{justify-content:space-between;gap:16px;display:flex}.edu-example-rows dt{color:var(--text-secondary);font-size:14px}.edu-example-rows dd{color:var(--text);margin:0;font-size:14px;font-weight:700}.edu-example-total{color:var(--edu-accent);flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px 16px;margin-top:24px;display:flex}.edu-example-total span{letter-spacing:-.02em;font-size:18px;font-weight:750}.edu-example-total strong{letter-spacing:-.02em;font-size:24px;font-weight:800}.edu-footnote{color:var(--text-muted);font-size:12px;line-height:1.6;margin-top:14px!important}.edu-accordion{border-top:1px solid var(--edu-line);margin-top:32px}.edu-split .edu-accordion{margin-top:0}.edu-accordion details{border-bottom:1px solid var(--edu-line)}.edu-accordion summary{cursor:pointer;justify-content:space-between;align-items:center;gap:20px;padding:20px 8px;list-style:none;display:flex}.edu-accordion summary::-webkit-details-marker{display:none}.edu-accordion summary:hover h3{color:var(--edu-accent)}.edu-accordion summary:focus-visible{outline:2px solid var(--edu-accent);outline-offset:2px;border-radius:6px}.edu-toggle{color:var(--edu-accent);flex:none;transition:transform .18s}.edu-accordion details[open] .edu-toggle{transform:rotate(45deg)}.edu-accordion details>p{color:var(--text-secondary);padding:0 8px 20px;font-size:14px;line-height:1.7}.edu-accordion-faq details[open] h3{color:var(--edu-accent)}.edu-accordion-faq h3{font-size:15px}.edu-center{text-align:center}.edu-center .edu-head{justify-items:center;display:grid}.edu-features{grid-template-columns:repeat(var(--edu-cols,4), minmax(0, 1fr));gap:28px;margin:40px 0 32px;padding:0;list-style:none;display:grid}.edu-features li{align-content:start;justify-items:center;gap:0;display:grid}.edu-feature-icon{color:var(--edu-accent)}.edu-features .edu-rule{opacity:.35;width:96px;height:2px;margin:14px 0 20px}.edu-features h3{margin-bottom:8px}.edu-features p{color:var(--text-secondary);font-size:14px;line-height:1.65}.edu-mini-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.edu-mini-cards article{border:1px solid var(--edu-line);background:var(--edu-card);border-radius:10px;gap:6px;padding:16px 18px;display:grid}.edu-mini-cards strong{color:var(--text);font-family:var(--display);font-size:15px}.edu-mini-cards span{color:var(--text-secondary);font-size:13px;line-height:1.55}.edu-equation{color:var(--text);font-family:var(--display);flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:16px;font-weight:700;display:flex}.edu-equation i{color:var(--text-muted);font-style:normal;font-weight:500}.edu-equation b{color:var(--edu-accent)}.edu-group-title{text-transform:uppercase;color:var(--text-muted)!important;letter-spacing:.16em!important;margin-top:48px!important;font-size:13px!important;font-weight:700!important}.edu-band .edu-group-title+.edu-callout{margin-top:14px!important}.edu-disclaimer{color:var(--text-muted);margin:48px 0 8px;font-size:12px;line-height:1.6}@media (max-width:1024px){.edu-split{grid-template-columns:1fr;gap:32px}.edu-lead{padding-top:0}.edu-features{grid-template-columns:repeat(min(var(--edu-cols,4), 2), minmax(0, 1fr));gap:40px 28px}.edu-steps{grid-template-columns:1fr;gap:40px}.edu-step-number:after{flex:0 280px}.edu-mock{margin:22px 0}}@media (max-width:640px){.edu-band{padding-top:44px}.edu h2{font-size:22px}.edu h3,.edu-lead{font-size:15px}.edu-features,.edu-mini-cards{grid-template-columns:1fr}.edu-intro{font-size:14px}.edu-formula{grid-template-columns:1fr;row-gap:6px}.edu-formula dd{margin-bottom:12px}.edu-formula-note{grid-column:1;margin:-8px 0 12px!important}.edu-formula dt,.edu-formula dd{font-size:16px}.edu-example{border-radius:12px;padding:24px 20px}.edu-example-stats{grid-template-columns:1fr 1fr;row-gap:18px}.edu-example-stats div:nth-child(3){border-left:0;padding-left:0}.edu-example-stats dd{font-size:18px}.edu-example-total span{font-size:16px}.edu-example-total strong{font-size:21px}.edu-accordion summary{padding:16px 4px}.edu-accordion details>p{padding:0 4px 16px;font-size:14px}}