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var(--nat4-space-5);border-radius:var(--nat4-radius-lg);background:var(--nat4-invite-bg);box-shadow:inset 0 0 0 1px var(--nat4-line)}.nat4s-cta:before{content:"";position:absolute;inset:auto -30px -60px auto;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(240,201,140,.22),transparent 68%);pointer-events:none}.nat4s-cta p{position:relative;font-family:var(--nat4-font);font-size:var(--nat4-fs-h2);line-height:1.55;color:var(--nat4-text);margin-bottom:var(--nat4-space-4)}.nat4s-cta a{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:var(--nat4-space-2);min-height:52px;padding:0 var(--nat4-space-6);border-radius:var(--nat4-radius-pill);font-size:var(--nat4-fs-ui);font-weight:600;color:var(--nat4-cta-text);text-decoration:none;background:var(--nat4-cta-bg);box-shadow:0 10px 26px -12px #9a6a248c;transition:transform .2s var(--nat4-ease),box-shadow .2s}.nat4s-cta a:hover{box-shadow:0 14px 30px -12px #9a6a24b3}.nat4s-cta a:active{transform:translateY(1px) scale(.99)}.nat4s-disclaimer{max-width:min(100%,var(--nat4-measure));margin-inline:auto;text-align:center;font-size:var(--nat4-fs-small);color:var(--nat4-text-faint);line-height:1.75}@media (min-width:768px){:root{--nat4-block-gap:var(--nat4-space-8);--nat4-block-gap-lg:var(--nat4-space-9);--nat4-entry-basis:calc(33.333% - var(--nat4-space-3));--nat4-leaf-basis:calc(25% - var(--nat4-space-2));--nat4-drill-basis:calc(25% - var(--nat4-space-2));--nat4-topic-gap:var(--nat4-space-9);--nat4-topic-gap-inner:var(--nat4-space-7)}.nat4s-page{max-width:720px;padding-left:var(--nat4-space-7);padding-right:var(--nat4-space-7)}.nat4s-hero__window{min-height:156px}.nat4s-uplinks{grid-template-columns:repeat(2,minmax(0,1fr))}.nat4s-uplinks--trio{grid-template-columns:minmax(0,1fr)}.nat4s-uplinks--halves .nat4s-linkcard+.nat4s-linkcard:before{left:calc(var(--nat4-space-3) / -2);top:50%;width:5px;height:44px;background:radial-gradient(circle at 50% 50%,var(--nat4-accent) 0 2.5px,transparent 3px) 50% 50%/100% 100% no-repeat,linear-gradient(180deg,transparent,var(--nat4-line-strong) 30%,var(--nat4-line-strong) 70%,transparent) 50% 0/1px 100% no-repeat}.nat4s-facet{margin-top:var(--nat4-space-8)}.nat4s-trio__fields{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:1024px){:root{--nat4-entry-basis:calc(25% - var(--nat4-space-3));--nat4-leaf-basis:calc(16.666% - var(--nat4-space-2))}.nat4s-page{max-width:780px;padding-left:var(--nat4-space-8);padding-right:var(--nat4-space-8)}.nat4s-hero__window{min-height:176px}}@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important}}