.explain-trigger{display:inline-flex;align-items:center;gap:9px;margin-top:14px;background:none;border:0;padding:8px 0;font:inherit;font-size:13px;font-weight:600;color:var(--ink);text-decoration:underline;text-underline-offset:5px;cursor:pointer}.explain-trigger span{display:grid;place-items:center;width:24px;height:24px;border:1px solid var(--ink);border-radius:50%;font-size:10px;padding-left:2px}.explainer-open{overflow:hidden}.explain-dialog{width:min(880px,calc(100% - 28px));max-height:calc(100dvh - 28px);padding:0;border:1px solid var(--ink);border-radius:12px;background:var(--paper);color:var(--ink);overflow:auto;box-shadow:10px 10px 0 #17282d33}.explain-dialog::backdrop{background:#17282dd9;backdrop-filter:blur(6px)}.explain-head{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:17px 22px;border-bottom:1px solid var(--ink)}.explain-head h2{margin:0;font-size:15px;font-weight:600;letter-spacing:-.3px}.explain-head button{display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--ink);border-radius:50%;background:transparent;font-size:23px}.explain-stage{position:relative;min-height:300px;background:#dfe7df;overflow:hidden}.explain-scene[hidden]{display:none!important}.explain-scene{min-height:300px;padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;animation:explain-in .4s ease-out}.explain-number{font-size:11px;letter-spacing:1.6px;text-transform:uppercase;margin-bottom:16px}.explain-scene h3{font-size:clamp(32px,4vw,52px);line-height:1.03;letter-spacing:-2px;margin:0;max-width:390px}.explain-scene h3 em{font-style:normal;color:#b43a25}.explain-art{position:relative;min-height:214px;display:flex;align-items:center;justify-content:center;isolation:isolate}.explain-art:before{content:'';width:190px;height:190px;background:var(--yellow);border-radius:50%;position:absolute;z-index:-1}.explain-paper{width:177px;min-height:190px;padding:18px;background:#fffaf0;border:1px solid var(--ink);box-shadow:6px 7px 0 var(--ink);transform:rotate(-5deg);animation:explain-paper .6s cubic-bezier(.22,1,.36,1);font-size:12px}.explain-paper strong{display:block;font-size:29px;line-height:1.05;letter-spacing:-1px;margin:15px 0}.explain-paper .paper-lines{height:40px}.explain-art .big-symbol{font-size:88px;font-weight:600;line-height:1}.explain-envelope{position:relative;display:grid;place-items:center;width:215px;height:145px;background:var(--orange);border:1px solid var(--ink);border-radius:5px;box-shadow:7px 7px 0 var(--ink);font-size:53px;transform:rotate(-5deg);animation:explain-paper .6s ease-out}.explain-envelope:after{content:'';position:absolute;inset:0;background:linear-gradient(32deg,transparent 49.5%,#17282d77 50%,transparent 50.5%),linear-gradient(-32deg,transparent 49.5%,#17282d77 50%,transparent 50.5%);pointer-events:none}.explain-caption{padding:15px 25px;min-height:76px;display:flex;align-items:center;justify-content:center;text-align:center;font-size:15px;line-height:1.5;margin:0;background:var(--ink);color:var(--paper)}.explain-controls{padding:16px 22px 20px}.explain-controls progress{display:block;width:100%;height:4px;accent-color:var(--orange);margin-bottom:14px;border:0}.explain-buttons{display:flex;justify-content:space-between;gap:14px;align-items:center;flex-wrap:wrap}.explain-buttons button{background:transparent;border:1px solid var(--ink);padding:9px 12px;border-radius:5px;min-height:42px;font-size:12px}.explain-buttons button:disabled{opacity:.35;cursor:default}.explain-buttons [data-explain-play]{background:var(--ink);color:var(--paper);min-width:110px}.explain-steps{display:flex;gap:6px;justify-content:center;margin:17px 0}.explain-steps button{width:30px;height:30px;border:1px solid var(--ink);border-radius:50%;background:none;font-size:12px}.explain-steps button[aria-current=true]{background:var(--ink);color:var(--paper)}.explain-end{text-align:center;font-size:12px;line-height:1.5;margin:14px 0 0}.explain-end a{font-weight:700;text-decoration:underline;text-underline-offset:4px}.explain-audio-status{font-size:11px;text-align:center}.explain-audio-status:empty{display:none}@keyframes explain-in{from{opacity:0;transform:translateY(9px)}to{opacity:1;transform:none}}@keyframes explain-paper{from{opacity:0;transform:translateY(15px) rotate(-12deg)}to{opacity:1;transform:rotate(-5deg)}}@media(max-width:600px){.explain-head{padding:12px 16px}.explain-head h2{font-size:13px}.explain-stage,.explain-scene{min-height:0}.explain-scene{padding:22px 20px;grid-template-columns:1fr;gap:10px;text-align:center}.explain-number{margin-bottom:9px;font-size:9px}.explain-scene h3{font-size:35px;letter-spacing:-1.5px;max-width:none}.explain-art{min-height:160px}.explain-art:before{width:145px;height:145px}.explain-paper{width:145px;min-height:135px;padding:12px}.explain-paper strong{font-size:23px;margin:10px 0}.explain-paper .paper-lines{height:27px}.explain-envelope{width:160px;height:108px;font-size:40px}.explain-art .big-symbol{font-size:66px}.explain-caption{font-size:13px;padding:13px 18px;min-height:88px}.explain-controls{padding:13px 16px 16px}.explain-buttons{gap:8px}.explain-buttons button{font-size:11px;padding:8px 9px}.explain-buttons [data-explain-play]{min-width:98px}.explain-steps{margin:13px 0}}@media(prefers-reduced-motion:reduce){.explain-scene,.explain-paper,.explain-envelope{animation:none}}