:root{--background:#f7faf8;--panel:#fff;--ink:#172027;--muted:#59666f;--line:#d9e3df;--green:#17855f;--green-dark:#075f45;--blue:#255fca;--amber:#99620f;--red:#ba3630;--shadow:0 24px 70px #17202729}*{box-sizing:border-box}html{min-height:100%}body{background:linear-gradient(135deg, #17855f17, transparent 34%), linear-gradient(315deg, #e0574f1c, transparent 36%), var(--background);min-height:100%;color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input{font:inherit}.page-shell{grid-template-columns:minmax(0,1fr) minmax(320px,430px);align-items:center;gap:48px;width:min(1120px,100%);min-height:100vh;margin:0 auto;padding:48px;display:grid}.main-copy{min-width:0}.eyebrow{color:var(--green-dark);letter-spacing:0;margin:0 0 14px;font-size:.86rem;font-weight:800}h1{letter-spacing:0;max-width:740px;margin:0;font-size:4rem;line-height:1}.lede{max-width:590px;color:var(--muted);margin:22px 0 32px;font-size:1.16rem;line-height:1.7}.invite-panel{border:1px solid var(--line);width:min(100%,490px);box-shadow:var(--shadow);background:#fffffff0;border-radius:8px;padding:24px}.invite-panel label{color:var(--ink);margin-bottom:10px;font-weight:750;display:block}.username-field{border:1px solid var(--line);background:#fbfdfc;border-radius:8px;grid-template-columns:42px 1fr;align-items:center;min-height:58px;display:grid;overflow:hidden}.username-field span{height:100%;color:var(--green-dark);border-right:1px solid var(--line);background:#eef7f2;place-items:center;font-weight:800;display:grid}.username-field input{width:100%;min-width:0;color:var(--ink);background:0 0;border:0;outline:0;padding:0 16px}.username-field:focus-within{border-color:var(--blue);box-shadow:0 0 0 4px #255fca24}button{background:var(--green-dark);color:#fff;cursor:pointer;border:0;border-radius:8px;justify-content:center;align-items:center;width:100%;min-height:52px;margin-top:16px;font-weight:800;display:inline-flex}button:hover:not(:disabled){background:#064b37}button:disabled,input:disabled{cursor:not-allowed;opacity:.66}.result{border:1px solid var(--line);min-height:88px;color:var(--muted);background:#fbfdfc;border-radius:8px;flex-direction:column;justify-content:center;margin-top:16px;padding:14px 16px;line-height:1.5;display:flex}.result strong{color:var(--ink)}.result-active{color:var(--green-dark);background:#edf8f2;border-color:#17855f59}.result-pending,.result-loading{color:var(--amber);background:#fff8e7;border-color:#99620f59}.result-validation_error,.result-setup_error,.result-github_error{color:var(--red);background:#fff1ef;border-color:#ba363059}.visual-panel{min-width:0;box-shadow:var(--shadow);background:#151a1d;border-radius:8px;padding:30px}.visual-panel img{width:100%;height:auto;display:block}@media (max-width:860px){.page-shell{grid-template-columns:1fr;gap:28px;padding:28px}h1{font-size:2.8rem}.visual-panel{order:-1;padding:20px}}@media (max-width:520px){.page-shell{padding:18px}h1{font-size:2.24rem}.lede{font-size:1rem}.invite-panel{padding:18px}}