:root{font-family:Inter,ui-sans-serif,system-ui,sans-serif;color:#243c36;background:#f6f5ef;font-synthesis:none;line-height:1.5}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,.button{border:1px solid #254f42;background:#254f42;color:#fff;padding:.7rem 1rem;border-radius:5px;cursor:pointer;text-decoration:none;display:inline-block}button:disabled{opacity:.55;cursor:not-allowed}a{color:inherit;text-underline-offset:4px}:focus-visible{outline:3px solid #bb571f;outline-offset:4px}select{padding:.55rem;background:#fff;border:1px solid #b9c4be;border-radius:4px;max-width:100%}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.18;font-weight:550;letter-spacing:-.04em;margin-bottom:.5rem}h2{font-size:1rem;margin-bottom:0;font-weight:600}h3{font-size:1.5rem;font-weight:500;line-height:1.25;letter-spacing:-.025em}.site-header{min-height:82px;border-bottom:1px solid #d7dcd4;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 4vw}.brand{font-size:1.1rem;font-weight:800;letter-spacing:.02em;text-decoration:none;white-space:nowrap}.brand span{display:block;font-size:.6rem;font-weight:500;letter-spacing:.18em}nav{display:flex;gap:1.3rem;align-items:center;font-size:.85rem;flex-wrap:wrap}.user-menu{position:relative}.user-menu summary{cursor:pointer}.user-menu>div{position:absolute;right:0;top:2rem;width:260px;padding:1rem;background:#fff;border:1px solid #d7dcd4;z-index:2;overflow-wrap:anywhere}main{max-width:1600px;margin:auto;padding:2.5rem 4vw}.workspace-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:2rem}.eyebrow{font-size:.65rem;font-weight:700;letter-spacing:.16em;margin-bottom:.8rem}.studio{border:1px solid #cbd4cb;border-radius:8px;overflow:hidden;background:#fff}.ai-banner{background:#e8eee1;padding:.9rem 1.4rem;font-size:.85rem;font-weight:600;display:flex;justify-content:space-between;gap:.5rem}.ai-banner span{font-weight:400}.panels{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);min-height:590px;height:calc(100dvh - 290px)}.panel{min-width:0;min-height:0;display:flex;flex-direction:column}.chat{border-right:1px solid #d7dcd4}.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:.8rem;padding:1.1rem 1.4rem;border-bottom:1px solid #e0e5dd}.panel-heading>span{font-size:.65rem;letter-spacing:.04em}.messages{flex:1;overflow-y:auto;padding:1.6rem}.conversation-empty{padding:2rem 0;max-width:340px}.conversation-empty p,.preview-empty p{color:#62726b;font-size:.9rem}.step{display:block;font-size:.7rem;margin-bottom:1.5rem;color:#687770}.message{margin-bottom:1rem;padding:.9rem 1rem;background:#f2f4ee;border-radius:5px;overflow-wrap:anywhere}.message span{font-size:.65rem;text-transform:uppercase;font-weight:600}.message p{margin:.3rem 0 0;white-space:pre-wrap}.message.system{background:#faf8f1}.composer{padding:1rem 1.4rem;border-top:1px solid #e0e5dd}.composer label{display:block;font-size:.75rem;margin-bottom:.4rem}.composer textarea{resize:vertical;min-height:80px;max-height:180px;width:100%;border:1px solid #b9c4be;border-radius:5px;padding:.75rem;color:inherit}.composer>div{display:flex;justify-content:space-between;align-items:center;gap:.5rem;margin-top:.65rem}small{color:#62726b;font-size:.7rem}.preview{background:#f9faf6}.preview-empty{flex:1;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:2rem}.app-mark{width:70px;height:70px;border:1px dashed #9bab9c;border-radius:16px;display:grid;place-items:center;font-size:2rem;color:#778c77;margin-bottom:1.5rem}.preview-empty h2{font-size:1.3rem;font-weight:500;margin-bottom:.8rem}.preview-label{font-size:.55rem;letter-spacing:.14em;padding:.45rem .6rem;border:1px solid #d9dfd3;margin-top:1.5rem}.mobile-tabs{display:none}.welcome{max-width:650px;margin:10vh auto}.welcome h1{font-size:clamp(2.5rem,6vw,4.3rem)}.welcome>p{max-width:490px}.dev-identity{display:block;margin-top:2rem;font-size:.8rem}.dev-identity select{display:block;margin-top:.5rem}.class-grid{display:grid;gap:1.5rem}.class-card{border:1px solid #cbd4cb;border-radius:8px;background:#fff;overflow:hidden}.empty-row{padding:2rem 1.4rem;color:#62726b}.table-scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;text-align:left}th,td{padding:1rem 1.4rem;border-bottom:1px solid #e0e5dd}th{font-size:.75rem}.error{color:#a33120;margin:.75rem 0 0}.sr-only,.skip:not(:focus){position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip:focus{display:block;padding:1rem}@media(max-width:899px){main{padding:1.5rem 4vw}.site-header{min-height:70px}.workspace-heading{align-items:flex-start;flex-direction:column;margin-bottom:1.4rem}.ai-banner{flex-direction:column;padding:.8rem 1rem}.ai-banner span{font-size:.75rem}.mobile-tabs{display:flex;padding:.5rem;gap:.5rem;border-bottom:1px solid #d7dcd4}.mobile-tabs button{flex:1;background:transparent;color:inherit;border-color:transparent}.mobile-tabs [aria-selected=true]{background:#e8eee1;border-color:#cbd4cb}.panels{display:block;min-height:500px;height:65dvh}.panel{height:100%}.chat{border:0}.panels[data-tab=chat] .preview,.panels[data-tab=preview] .chat{display:none}.panel-heading,.composer,.messages{padding:1rem}}@media(max-width:480px){nav{gap:.7rem;font-size:.75rem}.brand span{display:none}.site-header{padding-inline:4vw}}