:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0b0f14;
  color: #f4f7fb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: #0b0f14;
  color: #f4f7fb;
}
main {
  width: min(840px, calc(100% - 32px));
  margin: 48px auto;
  background: #131a22;
  border: 1px solid #2b3847;
  border-radius: 18px;
  padding: clamp(24px, 5vw, 44px);
}
h1 { margin-top: 0; font-size: clamp(30px, 5vw, 46px); }
h2 { margin-top: 32px; font-size: 22px; }
h3 { margin-top: 24px; font-size: 18px; }
p, li { color: #c8d1dc; line-height: 1.6; }
strong { color: #fff; }
a { color: #8fc5ff; }
nav { display: grid; gap: 12px; margin-top: 28px; }
nav a {
  display: block;
  padding: 14px 16px;
  border: 1px solid #34465a;
  border-radius: 10px;
  text-decoration: none;
  background: #0c1117;
}
nav a:focus, nav a:hover { border-color: #79b8ff; }
label { display: block; margin: 18px 0 6px; font-weight: 650; }
input {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #425268;
  background: #0c1117;
  color: #fff;
  padding: 13px 14px;
  font: inherit;
}
input:focus { outline: 2px solid #79b8ff; outline-offset: 1px; }
button {
  width: 100%;
  margin-top: 22px;
  padding: 14px 18px;
  border: 0;
  border-radius: 10px;
  background: #3377c5;
  color: #fff;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}
button.danger { background: #bd3e3e; }
button:disabled { opacity: .55; cursor: wait; }
#status { min-height: 1.5em; margin-top: 16px; font-weight: 650; }
.success { color: #8ee6a5; }
.error { color: #ff9d9d; }
.warning {
  background: #2a1717;
  border: 1px solid #763434;
  border-radius: 12px;
  padding: 14px 16px;
}
.notice {
  background: #122033;
  border: 1px solid #34577a;
  border-radius: 12px;
  padding: 14px 16px;
}
footer {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid #2b3847;
  font-size: 14px;
  color: #9cacbd;
}
[hidden] { display: none !important; }
code { color: #dbeaff; }