:root{color-scheme:light;font-family:IBM Plex Sans,Segoe UI,sans-serif;line-height:1.5;background:radial-gradient(circle at top left,#e8f1f5,#f7f5f0 55%,#eef0ea);color:#1a2428}body{margin:0;min-height:100vh}a{color:#1f4f63}.shell{min-height:100vh}.topbar{padding:1rem 1.25rem;border-bottom:1px solid rgba(26,36,40,.08)}.brand{font-family:"IBM Plex Serif",Georgia,serif;font-size:1.25rem;font-weight:600;text-decoration:none;color:inherit}.app{max-width:44rem;margin:0 auto;padding:2rem 1.25rem 3rem}.placeholder-main{text-align:center;padding-top:4rem}.placeholder-main h1{margin:0 0 .5rem;font-family:"IBM Plex Serif",Georgia,serif;font-weight:600}.panel{padding:1.25rem 1.35rem;background:#ffffffb8;border:1px solid rgba(26,36,40,.1);margin-bottom:1rem}.stack{display:flex;flex-direction:column;gap:.25rem}h1,h2,h3{font-family:"IBM Plex Serif",Georgia,serif;font-weight:600;letter-spacing:-.02em;margin:0 0 .75rem}h1{font-size:1.85rem}.form{display:flex;flex-direction:column;gap:.85rem}.form.row{flex-direction:row;align-items:center}label{display:flex;flex-direction:column;gap:.35rem;font-size:.92rem}label.inline{margin-top:1rem}input,select,button{font:inherit;padding:.55rem .7rem;border:1px solid rgba(26,36,40,.18);background:#fff;color:inherit}button{cursor:pointer;background:#1f4f63;color:#fff;border-color:#1f4f63}button.secondary{background:transparent;color:#1a2428}button:disabled{opacity:.6;cursor:not-allowed}.row{display:flex;gap:.75rem;align-items:center}.row.between{justify-content:space-between}.list{list-style:none;padding:0;margin:0 0 1rem}.list li{padding:.55rem 0;border-bottom:1px solid rgba(26,36,40,.08)}.muted{color:#4a5a62}.error{color:#8b2e2e}.ok{color:#1f5a3a}