.learn-about-intro{position:relative;z-index:12;overflow:visible;width:min(100%,1000px);max-width:1000px;margin:30px auto 0;padding:clamp(20px,3vw,32px);text-align:left;border:1px solid #e4dfe1;border-radius:22px;background:#fff;color:#1f2937;box-shadow:0 8px 28px rgba(31,41,55,.045)}
.learn-about-intro>.academic-eyebrow{margin:0 0 10px;color:#800020;font-size:.7rem;font-weight:750;letter-spacing:.14em;text-transform:uppercase}
.learn-about-heading-row{display:flex;align-items:center;justify-content:space-between;gap:20px;position:relative}
.learn-about-intro h2{margin:0;color:#800020;font-size:clamp(1.25rem,2.6vw,1.75rem);font-weight:750;line-height:1.2}
.learn-about-intro .learn-about-summary{max-width:760px;margin:12px 0 0;color:#374151;font-size:.98rem;line-height:1.65}
.whats-new{position:relative;flex:0 0 auto;z-index:20}
.whats-new-trigger{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:8px 12px;border:1px solid #e5dadd;border-radius:11px;background:#fff;color:#253041;font-family:inherit;font-size:.83rem;font-weight:600;line-height:1.2;cursor:pointer;transition:border-color .16s,color .16s,background-color .16s}
.whats-new-trigger:hover{border-color:#c99ba7;background:#fffafb;color:#800020}
.whats-new-trigger:focus-visible,.demo-reset:focus-visible,.whats-new-item:focus-visible{outline:3px solid #b54763;outline-offset:3px}
.whats-new-trigger svg,.whats-new-item-icon svg,.demo-reset svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.whats-new-dot,.try-demo-kicker>span{display:inline-block;width:7px;height:7px;border-radius:50%;background:#800020}
.whats-new-dot[hidden]{display:none}
.whats-new-dot:not([hidden]){animation:whats-new-pulse 1.7s ease-in-out infinite}
.whats-new-chevron{width:15px!important;height:15px!important;transition:transform .16s}
.whats-new-trigger[aria-expanded="true"] .whats-new-chevron{transform:rotate(180deg)}
.whats-new-panel{position:absolute;right:0;top:calc(100% + 9px);width:min(360px,calc(100vw - 36px));max-height:min(410px,70vh);overflow:auto;padding:7px;border:1px solid #e5dadd;border-radius:14px;background:#fff;box-shadow:0 16px 42px rgba(31,41,55,.14);text-align:left}
.whats-new-panel[hidden]{display:none}
.whats-new-item{display:grid;grid-template-columns:34px minmax(0,1fr) 16px;align-items:start;gap:10px;padding:11px 9px;border-radius:10px;color:#1f2937;text-decoration:none;transition:background-color .16s}
.whats-new-item+.whats-new-item{border-top:1px solid #f0e9eb}
.whats-new-item:hover{background:#fff7f8}
.whats-new-item-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:#fbf1f3;color:#800020}
.whats-new-item-copy{display:grid;gap:3px;min-width:0}
.whats-new-item-copy strong{overflow:hidden;color:#252b35;font-size:.85rem;text-overflow:ellipsis;white-space:nowrap}
.whats-new-item-copy>span{color:#586171;font-size:.76rem;line-height:1.4}
.whats-new-item-copy small{color:#78808d;font-size:.68rem}
.whats-new-arrow{color:#800020;font-size:1rem}
.whats-new-empty{margin:0;padding:14px;color:#596273;font-size:.82rem}
.learning-journey{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin:22px 0 25px}
.learning-step{display:flex;flex-direction:column;align-items:center;gap:7px;color:#374151;font-size:.8rem;font-weight:650;text-align:center}
.learning-step-icon{display:grid;place-items:center;width:50px;height:50px;border:1px solid #eee3e6;border-radius:15px;background:#fffafb;color:#800020;transition:background-color .18s,border-color .18s,transform .18s}
.learning-step-icon svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.learning-step:hover .learning-step-icon{transform:translateY(-2px);border-color:#d7b3bc;background:#fff5f7}
.try-demo{padding:19px 20px 17px;border:1px solid #ebe5e7;border-radius:16px;background:#fff}
.try-demo-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}
.try-demo-kicker{display:inline-flex;align-items:center;gap:7px;color:#800020;font-size:.63rem;font-weight:800;letter-spacing:.1em}
.try-demo-kicker>span{width:6px;height:6px}
.try-demo h3{margin:5px 0 2px;color:#252b35;font-size:1.12rem;font-weight:750}
.try-demo-heading p{margin:0;color:#596273;font-size:.78rem}
.demo-reset{display:grid;place-items:center;width:37px;height:37px;border:1px solid #e5dadd;border-radius:11px;background:white;color:#800020;cursor:pointer;transition:background-color .16s,border-color .16s}
.demo-reset:hover{border-color:#c99ba7;background:#fff7f8}
.demo-reset svg{width:18px;height:18px}
.demo-graph-wrap{margin:12px 0 4px;border:1px solid #f0eaec;border-radius:12px;background:#fff;overflow:hidden}
.normal-curve{display:block;width:100%;height:auto;min-height:152px;max-height:225px}
.graph-grid path{fill:none;stroke:#eee9eb;stroke-width:1;stroke-dasharray:3 5}
.normal-area{fill:rgba(128,0,32,.09)}
.normal-line{fill:none;stroke:#800020;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.mean-indicator{fill:none;stroke:#a84a62;stroke-width:1.5;stroke-dasharray:4 4}
.mean-indicator-label{fill:#800020;font-family:inherit;font-size:12px;font-weight:600}
.graph-axis{fill:none;stroke:#a9a3a6;stroke-width:1.2}
.graph-ticks{fill:#6b7280;font-family:inherit;font-size:11px;text-anchor:middle}
.demo-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:11px}
.demo-control{display:grid;gap:5px;color:#374151;font-size:.76rem;font-weight:650}
.demo-control>span{display:flex;justify-content:space-between;gap:8px}
.demo-control output{color:#800020;font-variant-numeric:tabular-nums}
.demo-control input{width:100%;margin:0;accent-color:#800020;cursor:pointer}
.demo-explanation{margin:10px 0 0;color:#374151;font-size:.78rem;line-height:1.5}
@keyframes whats-new-pulse{0%,100%{box-shadow:0 0 0 0 rgba(128,0,32,.22)}50%{box-shadow:0 0 0 5px rgba(128,0,32,0)}}
@media(max-width:760px){.learn-about-heading-row{align-items:flex-start}.whats-new-trigger{min-height:38px;padding:7px 9px;font-size:.76rem}.whats-new-trigger>svg:first-child{width:16px;height:16px}.learning-journey{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:16px}.learning-step-icon{width:46px;height:46px}}
@media(max-width:520px){.learn-about-intro{padding:20px 16px}.learn-about-heading-row{gap:8px}.learn-about-intro h2{font-size:1.22rem}.whats-new-trigger{gap:5px;padding:7px;border-radius:9px;font-size:.68rem}.whats-new-dot{margin-left:0}.whats-new-panel{right:-2px}.try-demo{padding:15px 12px}.demo-controls{grid-template-columns:1fr;gap:10px}.normal-curve{min-height:125px}}
@media(prefers-reduced-motion:reduce){.whats-new-dot:not([hidden]){animation:none}.learning-step-icon,.whats-new-trigger,.whats-new-item,.demo-reset{transition:none}}