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conic-gradient(from 0deg,var(--rust) var(--sweep),var(--line) 0) border-box;border:1px solid #0000}@media (min-width:700px){.landing .topic-grid{grid-template-columns:1fr 1fr}}.landing .topic-grid li{border:1px solid #0000;border-bottom-color:var(--line)}.landing .topic-grid li:after{content:"";background:radial-gradient(220px circle at var(--spot-x,50%) var(--spot-y,50%),#9b482f66,transparent 70%);-webkit-mask-composite:xor;opacity:0;pointer-events:none;padding:1px;transition:opacity .3s;position:absolute;inset:-1px;-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor,source-over;mask:linear-gradient(#000 0 0) content-box exclude,linear-gradient(#000 0 0)}.landing .topic-grid li:hover:after{opacity:1}.landing .fit-yes li:before{content:"";background:var(--rust) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.2l2.3 2.3 4.7-5' fill='none' stroke='%23fff' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat;border-radius:50%;width:16px;height:16px;top:.35em}.landing .fit-no li:before{content:"";border:1.5px solid var(--ink);background:linear-gradient(var(--ink),var(--ink)) center/7px 1.5px no-repeat;border-radius:50%;width:16px;height:16px;top:.35em}.landing .faq-section{interpolate-size:allow-keywords}.landing .faq-list details::details-content{block-size:0;transition:block-size var(--d-med) var(--ease-out),content-visibility var(--d-med) allow-discrete;overflow:clip}.landing .faq-list details[open]::details-content{block-size:auto}.landing .faq-list summary:after{transition:transform var(--d-fast) ease}.landing .faq-list details[open]>summary:after{background-size:100% 1.5px,1.5px 100%;transform:rotate(45deg)}.landing .final-offer{background:var(--night)}.landing .final-offer:before{background:radial-gradient(40% 60% at var(--glow-x,30%) var(--glow-y,40%),#9b482f3d,transparent), radial-gradient(35% 50% at calc(100% - var(--glow-x,30%)) 70%,#7fa08c2e,transparent);inset:0}.sticky-buy{background:color-mix(in srgb,var(--night) 82%,transparent);-webkit-backdrop-filter:blur(14px)saturate(140%);backdrop-filter:blur(14px)saturate(140%);border-top:1px solid #ffffff14}@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){.sticky-buy{background:var(--night)}}@media (prefers-reduced-transparency:reduce){.sticky-buy{background:var(--night)}}.landing .button:active:not(:disabled),.rail-button:active:not(:disabled){transform:translateY(1px)scale(.98)}@media (prefers-reduced-motion:no-preference){@keyframes ll-rise{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}@keyframes ll-line{0%{clip-path:inset(0 0 100%);transform:translateY(24px)}to{clip-path:inset(0 0 -20%);transform:none}}@keyframes ll-cover{0%{transform:translateY(-46px)rotate(-1deg)}to{transform:rotate(-7deg)}}@keyframes ll-sheet{0%{opacity:0;transform:translate(-60px)rotate(0)}to{opacity:1;transform:rotate(7deg)}}@keyframes ll-scan{0%{opacity:1;transform:translateY(0)}90%{opacity:1}to{opacity:0;transform:translateY(var(--scan-h,560px))}}@keyframes ll-pop{0%{transform:scale(0)}to{transform:scale(1)}}@keyframes ll-draw-x{0%{transform:scaleX(0)}to{transform:scaleX(1)}}@keyframes ll-draw-y{0%{transform:scaleY(0)}to{transform:scaleY(1)}}@keyframes ll-ink{0%{color:color-mix(in srgb,var(--ink) 26%,var(--paper))}to{color:var(--ink)}}@keyframes ll-ink-rust{0%{color:color-mix(in srgb,var(--rust) 26%,var(--paper))}to{color:var(--rust)}}@keyframes ll-node{0%{background:var(--paper);color:var(--ink)}to{background:var(--rust);color:var(--white)}}@keyframes ll-arrive{0%{opacity:.4;transform:translate(16px)}to{opacity:1;transform:none}}@keyframes ll-write{0%{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0)}}@keyframes ll-follow{0%{opacity:1;top:0}90%{opacity:1}to{opacity:0;top:100%}}@keyframes ll-sweep{0%{--sweep:0deg}to{--sweep:360deg}}@keyframes ll-from-left{0%{opacity:0;transform:translate(-24px)}to{opacity:1;transform:none}}@keyframes ll-from-right{0%{opacity:0;transform:translate(24px)}to{opacity:1;transform:none}}@keyframes ll-fade{0%{opacity:0}to{opacity:1}}@keyframes ll-nudge{0%,to{transform:none}50%{transform:translate(6px)}}@keyframes ll-shimmer{0%{transform:skew(-18deg)translate(-120%)}to{transform:skew(-18deg)translate(420%)}}@keyframes ll-bar-in{0%{transform:translateY(110%)}to{transform:none}}@keyframes ll-card-3d{entry 0%{opacity:.55;transform:perspective(900px)rotateY(-18deg)scale(.92)}entry 100%{opacity:1;transform:none}cover 50%{box-shadow:0 24px 48px #1f352530}exit 0%{opacity:1;transform:none}exit 100%{opacity:.55;transform:perspective(900px)rotateY(18deg)scale(.92)}}@keyframes ll-settle{0%{transform:translateY(12px)}to{transform:none}}.landing .hero-copy>*{animation:ll-settle .4s var(--ease-out) both;animation-delay:calc(var(--n,0) * 30ms)}.landing .hero-copy>:nth-child(2){--n:1}.landing .hero-copy>:nth-child(3){--n:2}.landing .hero-copy>:nth-child(4){--n:3}.landing .hero-copy>:nth-child(5){--n:4}.landing .hero-copy>:nth-child(6){--n:5}.landing .hero-copy h1{animation:ll-settle .45s var(--ease-out) both}.landing .hero-checks li:before{animation:ll-pop .5s var(--ease-spring) both;animation-delay:calc(.2s + var(--c,0) * 80ms)}.landing .hero-checks li:nth-child(2):before{--c:1}.landing .hero-checks li:nth-child(3):before{--c:2}.landing .worksheet-paper{animation:ll-sheet .8s var(--ease-out) .15s both}.landing .cover-paper{animation:ll-cover .9s var(--ease-spring) .3s both}.landing .book-display:after{animation:ll-scan var(--d-slow) var(--ease-out) both}.landing .landing-facts li{animation:ll-rise .6s var(--ease-out) both;animation-delay:calc(.5s + var(--i,0) * 70ms)}.landing .landing-facts:before{animation:ll-draw-x .9s var(--ease-out) .45s both}.landing .button-sample:after{animation:ll-shimmer 1s var(--ease-out) 1.3s 1 both}.landing .button-sample:hover:after{animation:ll-shimmer .9s var(--ease-out) 1 both}.sticky-buy{transition:transform .6s var(--ease-spring)}.preview-swipe{animation:.8s ease-in-out 1s 3 ll-nudge;display:inline-block}.page-zoom[open]{transition:opacity var(--d-med) var(--ease-out),transform var(--d-med) var(--ease-out),overlay var(--d-med) allow-discrete,display var(--d-med) allow-discrete}@starting-style{.page-zoom[open]{opacity:0;transform:scale(.96)}}@supports (animation-timeline:view()){.landing .reveal>*{animation:linear both ll-rise;animation-timeline:view();animation-range:entry entry 50%}@media (hover:none){@keyframes ll-sep-sheet{to{transform:rotate(13deg)translate(22px)}}@keyframes ll-sep-cover{to{transform:rotate(-7deg)translateY(-14px)}}.landing .worksheet-paper{animation:ll-sheet .8s var(--ease-out) .15s both,ll-sep-sheet linear both;animation-timeline:auto,view();animation-range:normal,exit}.landing .cover-paper{animation:ll-cover .9s var(--ease-spring) .3s 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both ll-write;animation-timeline:--sheet;animation-range:entry 40% entry 60%}.landing .example-row:nth-of-type(3){animation-range:entry 48% entry 68%}.landing .example-row:nth-of-type(4){animation-range:entry 56% entry 76%}.landing .example-row:nth-of-type(5){animation-range:entry 64% entry 84%}.landing .example-card:after{animation:linear both ll-follow;animation-timeline:--sheet;animation-range:entry 70% cover 55%}.landing .kit-table article{animation:linear both ll-rise;animation-timeline:view();animation-range:entry entry 60%}.landing .landing-offer{animation:linear both ll-sweep;animation-timeline:view();animation-range:entry 30% entry 80%}.landing .topic-grid li{animation:linear both ll-rise;animation-timeline:view();animation-range:entry entry 60%}.landing .fit-columns>div:first-child{animation:linear both ll-from-left;animation-timeline:view();animation-range:entry entry 50%}.landing .fit-columns>div:nth-child(2){animation:linear both ll-from-right;animation-timeline:view();animation-range:entry entry 50%}.landing .fit-boundaries{animation:linear both ll-fade;animation-timeline:view();animation-range:entry 40% entry 90%}.landing .preview-rail li{animation:linear both ll-card-3d;animation-timeline:view(inline);animation-range:normal}.landing .final-offer h2{animation:linear both ll-line;animation-timeline:view();animation-range:entry 20% entry 70%}.scroll-progress{animation:linear both ll-draw-x;animation-timeline:scroll(root)}}}@media (prefers-reduced-motion:reduce){.landing .landing-offer{background:linear-gradient(var(--paper),var(--paper)) padding-box, linear-gradient(var(--line),var(--line)) border-box}.landing .faq-list details::details-content{transition:none}}@media (max-width:760px){body:has(.landing) .site-header{padding-top:12px;padding-bottom:12px}body:has(.landing) .site-header .wordmark{font-size:26px}.landing .product-breadcrumbs{display:none}.landing .product-hero{flex-direction:column;align-items:stretch;gap:0;padding-top:10px;padding-bottom:48px;display:flex}.landing .hero-copy{display:contents}.landing .hero-copy>.eyebrow{letter-spacing:.1em;order:1;margin-bottom:8px;font-size:10.5px}.landing .hero-copy>h1{letter-spacing:-.8px;order:2;max-width:none;margin-bottom:14px;font-size:clamp(30px,8.4vw,38px);line-height:1.1}.landing .book-display{order:3}.landing .hero-copy>.hero-price{order:4;margin:16px 0 12px}.landing .hero-copy>.landing-actions{order:5}.landing .hero-copy>.hero-description{order:6;margin-top:26px}.landing .hero-copy>.hero-checks{order:7}.landing .book-display{height:min(260px,62vw + 30px);min-height:0;padding:0}.landing .display-heading{display:none}.landing .paper-stack{inset:10px 0 26px}.landing .cover-paper{width:auto;height:92%;top:4%;left:22%}.landing .worksheet-paper{width:auto;height:84%;top:2%;right:18%}.landing .display-shadow{height:22px;bottom:22px}.landing .book-display figcaption{font-size:9.5px;line-height:1.3;bottom:6px;left:12px;right:12px}.landing .book-display figcaption br{display:none}.landing .landing-action-buttons .button{min-height:48px;padding-top:12px;padding-bottom:12px}.landing .hero-price strong{font-size:34px}}.consent-bar{z-index:40;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));background:var(--white);max-width:720px;color:var(--ink);border:1px solid #273d3533;border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px 18px;margin:0 auto;padding:14px 16px;display:flex;position:fixed;box-shadow:0 12px 32px #0a141033}.consent-bar p{flex:260px;margin:0;font-size:14px;line-height:1.45}.consent-bar a{color:inherit}.consent-actions{gap:8px;display:flex}.consent-actions button{min-height:44px;font:inherit;cursor:pointer;border-radius:6px;padding:0 18px;font-size:14px}.consent-no{color:var(--ink);background:0 0;border:1px solid #273d3566}.consent-yes{background:var(--ink);color:var(--white);border:1px solid var(--ink)}.ad-choice{border:1px solid #273d3533;border-radius:8px;margin:18px 0 8px;padding:16px 18px}.ad-choice p{margin:0 0 12px}.thanks{padding-top:48px;padding-bottom:70px}.thanks-hero{border-bottom:1px solid var(--line);grid-template-columns:minmax(0,1fr) minmax(220px,300px);align-items:start;gap:40px 56px;padding-bottom:48px;display:grid}.thanks h1{margin:10px 0 18px;font-size:clamp(38px,5vw,64px);line-height:1.05}.thanks h1 em{color:var(--rust);font-style:italic}.thanks-intro{max-width:34em;margin:0 0 22px;font-size:20px}.thanks-steps{counter-reset:thanks;gap:12px;max-width:36em;margin:0 0 20px;padding:0;list-style:none;display:grid}.thanks-steps li{background:var(--white);border:1px solid var(--line);border-radius:8px;padding:14px 16px 14px 52px;font-size:16px;line-height:1.5;position:relative}.thanks-steps li:before{counter-increment:thanks;content:counter(thanks);background:var(--ink);width:26px;height:26px;color:var(--white);font:600 13px/26px var(--sans);text-align:center;border-radius:50%;position:absolute;top:12px;left:14px}.thanks-cover{text-align:center;margin:0}.thanks-cover img{border-radius:6px;width:100%;height:auto;box-shadow:0 18px 40px #0a141026}.thanks-cover figcaption{color:var(--muted);margin-top:12px;font-size:13px}.thanks-section{padding-top:44px}.thanks-section h2{margin:8px 0 22px;font-size:clamp(28px,3.4vw,40px)}.thanks-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.thanks-grid article{background:var(--white);border:1px solid var(--line);border-radius:8px;padding:20px 22px}.thanks-grid h3{margin:0 0 8px;font-size:19px}.thanks-grid p{color:var(--muted);margin:0;font-size:15px;line-height:1.5}.thanks-note{border-top:1px solid var(--line);color:var(--muted);margin-top:28px;padding-top:16px}.thanks-start{gap:10px;max-width:40em;margin:0 0 20px;padding-left:24px;font-size:17px;display:grid}@media (max-width:760px){.thanks{padding-top:28px}.thanks-hero{grid-template-columns:1fr;gap:28px}.thanks-cover{order:-1;max-width:150px;margin:0 auto}.thanks-cover figcaption{display:none}.thanks-grid{grid-template-columns:1fr}}.sticky-buy-note{color:#c8d3c6;margin-top:2px;font-size:11px;line-height:1.3;display:block}@media (max-width:600px){.sticky-buy-note{display:none}}