:root {
  --bg: #0b0d12;
  --card: #151922;
  --border: #2a3142;
  --text: #eef1f7;
  --muted: #8b93a7;
  --accent: #7c5cff;
  --accent2: #3dd6c6;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(900px 420px at 0% 0%, #1a1440 0%, transparent 55%),
    radial-gradient(700px 380px at 100% 10%, #0d2a2a 0%, transparent 50%),
    var(--bg);
  color: var(--text);
}
.wrap {
  max-width: 440px;
  margin: 0 auto;
  padding: 20px 16px calc(28px + env(safe-area-inset-bottom));
}
header {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
}
.logo {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.3rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  flex: 0 0 auto;
}
h1 { margin: 0; font-size: 1.25rem; }
header p { margin: 2px 0 0; color: var(--muted); font-size: 0.88rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}
label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 600;
}
input[type="password"], input[type="text"] {
  width: 100%;
  padding: 14px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0f1219;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 8px;
  outline: none;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124,92,255,.2); }
.hint { margin: 0 0 12px; color: var(--muted); font-size: 0.78rem; }
.check {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 10px 0;
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
}
.check input { width: 18px; height: 18px; }
.btn {
  width: 100%;
  border: none;
  border-radius: 14px;
  padding: 15px 14px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 8px;
  -webkit-tap-highlight-color: transparent;
}
.btn.primary {
  background: linear-gradient(135deg, #6a4dff, #4f7cff);
  color: white;
}
.btn.ghost {
  background: #1b2130;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn:active { transform: scale(0.98); }
.tips h2 {
  margin: 0 0 10px;
  font-size: 1rem;
}
.tips ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.92rem;
}
.tips b { color: var(--text); }
footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 10px 0 0;
}
footer a { color: #a99bff; text-decoration: none; }