:root{color-scheme:dark;--paper:#0d1117;--ink:#e7f0f2;--muted:#a6b9be;--line:#2c3a43;--accent:#f08a68;--panel:#151c24;--link:#70d9d4;font-family:Arial,Helvetica,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-size:15px;line-height:1.5}a{color:var(--link)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--link);outline-offset:4px}h1,p{margin:0}
.sign-in-shell{min-height:100vh;min-height:100svh;display:grid;place-items:center;padding:28px 16px}.sign-in-card{width:100%;max-width:400px;padding:28px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:0 22px 70px #0006}
.brand{display:flex;align-items:center;gap:12px;color:#f5fbfc;text-decoration:none;font-size:19px;font-weight:700;letter-spacing:-.5px;line-height:1.2}.brand-mark{display:grid;place-items:center;flex:none;width:42px;height:42px;border-radius:12px;background:#102a32;font-size:21px}.brand-caption{display:block;margin-top:5px;color:var(--muted);font-size:9px;letter-spacing:1.7px}
h1{margin-top:28px;font-size:28px;letter-spacing:-.8px;line-height:1.2}.intro{margin:8px 0 22px;color:var(--muted)}form{display:grid;gap:8px}label{font-size:13px;font-weight:700}input{width:100%;min-width:0;min-height:44px;margin-bottom:8px;padding:10px 12px;border:1px solid #40515d;border-radius:7px;background:var(--paper);color:var(--ink);font:inherit;font-size:16px}button{display:flex;align-items:center;justify-content:space-between;min-height:44px;margin-top:6px;padding:10px 14px;border:1px solid var(--accent);border-radius:7px;background:var(--accent);color:#21120e;font:inherit;font-weight:700;cursor:pointer}button:hover{background:#ffab8c}.error{margin:16px 0;padding:10px 12px;border:1px solid #9b5348;border-radius:7px;background:#48251f;color:#ffd7ce}.registration-note{margin-top:20px;color:var(--muted);font-size:12px}.session-note{margin-top:6px;color:var(--muted);font-size:11px}.back-link{display:inline-flex;align-items:center;min-height:44px;margin-top:10px;font-size:12px;text-decoration:none}.back-link:hover{text-decoration:underline}@media(max-width:420px){.sign-in-card{padding:24px}.sign-in-shell{padding:16px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}
.embedded-sign-in .sign-in-shell{min-height:0;padding:0;display:block}.embedded-sign-in .sign-in-card{width:400px;max-width:none;padding:28px;box-shadow:none}