:root {
  color-scheme: dark;
  --paper: #e8e8e8;
  --ink: #0a0a0a;
  --accent: #00ffcc;
}
* { box-sizing: border-box; }
html {
  min-height: 100%;
  background: linear-gradient(105deg, var(--paper) 0%, var(--paper) 50%, #000 50%, #000 100%) fixed;
}
body {
  margin: 0;
  min-height: 100vh;
  padding: max(24px, env(safe-area-inset-top)) 20px max(40px, env(safe-area-inset-bottom));
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  color: #fff;
}
.shell { width: min(860px, 100%); margin: 0 auto; }
header, main, footer {
  background: rgba(0,0,0,.82);
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 24px 70px rgba(0,0,0,.45);
  backdrop-filter: blur(20px);
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 22px;
  border-radius: 20px 20px 0 0;
}
.brand {
  font-family: Syncopate, Verdana, sans-serif;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
}
header a, footer a { color: var(--accent); }
main { padding: clamp(28px, 6vw, 62px); border-top: 0; }
footer {
  padding: 18px 22px;
  border-top: 0;
  border-radius: 0 0 20px 20px;
  font-size: .9rem;
}
h1, h2 {
  font-family: Syncopate, Verdana, sans-serif;
  text-transform: uppercase;
  line-height: 1.15;
}
h1 { font-size: clamp(1.7rem, 6vw, 3rem); margin: 0 0 24px; }
h2 { font-size: 1rem; letter-spacing: .08em; margin-top: 34px; }
p, li { color: rgba(255,255,255,.88); }
a { color: inherit; }
nav { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 34px; }
nav a { color: var(--accent); }
.notice {
  border-left: 3px solid var(--accent);
  padding: 14px 18px;
  background: rgba(0,255,204,.08);
  margin: 26px 0;
}
label { display: block; font-weight: 700; margin-bottom: 8px; }
input {
  width: 100%;
  min-height: 48px;
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 12px;
  background: rgba(255,255,255,.08);
  color: #fff;
  padding: 12px 14px;
  font: inherit;
}
input:focus-visible, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.field { margin: 18px 0; }
button, .button {
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #000;
  padding: 13px 22px;
  font: 700 .76rem Syncopate, Verdana, sans-serif;
  letter-spacing: .11em;
  text-transform: uppercase;
  cursor: pointer;
}
button[disabled] { opacity: .55; cursor: wait; }
.status { min-height: 1.7em; margin-top: 14px; }
.small { font-size: .9rem; color: rgba(255,255,255,.68); }
@media (max-width: 560px) {
  header { align-items: flex-start; flex-direction: column; }
  main { padding: 28px 22px; }
}