:root{color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#25262b;background:#f5f5f7;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}body{margin:0;min-height:100svh;display:grid;place-items:center;padding:32px 24px}
.signin{display:flex;flex-direction:column;align-items:center;width:min(100%,280px);text-align:center}
.logo{display:block;object-fit:contain;margin-bottom:20px}
h1{font-size:28px;font-weight:500;letter-spacing:-1.1px;margin:0 0 36px;line-height:1.2}
a{touch-action:manipulation;text-decoration:none}
.signin-button{display:flex;align-items:center;justify-content:center;width:100%;min-height:48px;padding:12px 20px;background:#fff;border:1px solid #dadce0;border-radius:10px;color:#303136;font-size:14px;font-weight:500}
.signin-button:hover{background:#fafafa;border-color:#bfc1c7}
a:focus-visible{outline:3px solid #8ca6c9;outline-offset:4px}
.privacy{font-size:12px;color:#686a73;margin-top:24px;padding:8px}
@media(prefers-reduced-motion:no-preference){.signin-button{transition:background .15s,border-color .15s}}

.invite-intro{max-width:320px;margin:0 0 24px;color:#677383;font-size:14px;line-height:1.6}

/* The entry screen carries the same restrained glass control as the library. */
body{background:radial-gradient(ellipse at 15% 20%,#dce5ef66,transparent 55%),radial-gradient(ellipse at 90% 85%,#e5e0ec55,transparent 50%),#f4f5f7}
.signin-button{border-radius:24px;border-color:#ffffffd9;background:linear-gradient(135deg,#fffffff0,#ffffff70 55%,#ffffffc9);backdrop-filter:blur(24px) saturate(130%);-webkit-backdrop-filter:blur(24px) saturate(130%);box-shadow:0 6px 22px #25364e0b,inset 0 1px 0 #fff,inset 0 -1px 0 #50678014}
.signin-button:hover{background:#ffffffde;border-color:#fff;box-shadow:0 8px 25px #25364e12,inset 0 1px 0 #fff}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.signin-button{background:#fff}}
@media(prefers-reduced-transparency:reduce),(prefers-contrast:more){.signin-button{background:#fff;backdrop-filter:none;-webkit-backdrop-filter:none;border-color:#a5b2c3;box-shadow:none}}
@media(forced-colors:active){.signin-button{background:Canvas;border-color:CanvasText;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none}}