:root {
  --bg: #f7f7f8; --card: #fff; --line: #e5e5e8; --text: #101014;
  --mute: #71717a; --accent: #6d28d9; --err: #dc2626;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Segoe UI", sans-serif;
}
.wrap { width: 100%; padding: 24px; }
.card {
  max-width: 380px; margin: 0 auto; background: var(--card);
  border: 1px solid var(--line); border-radius: 14px; padding: 32px 28px;
}
h1 { font-size: 18px; margin: 0 0 4px; text-align: center; }
.sub { font-size: 13px; color: var(--mute); text-align: center; margin: 0 0 24px; }
label { display: block; font-size: 13px; margin-bottom: 14px; }
input {
  display: block; width: 100%; margin-top: 6px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 8px; font-size: 14px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button {
  width: 100%; padding: 11px; margin-top: 6px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 14px; font-weight: 600; cursor: pointer;
}
button:disabled { opacity: .6; cursor: default; }
.err { color: var(--err); font-size: 13px; margin-top: 10px; min-height: 1em; }
.note { font-size: 12px; color: var(--mute); text-align: center; margin-top: 18px; }