:root { color-scheme: dark; font-family: Inter, "Microsoft YaHei", system-ui, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: #eaf3fb; background: #030b14; }
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 18% 22%, rgba(34, 136, 181, .17), transparent 36%),
    linear-gradient(rgba(73, 148, 180, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(73, 148, 180, .05) 1px, transparent 1px);
  background-size: auto, 36px 36px, 36px 36px;
}
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card {
  position: relative; width: min(420px, 100%); padding: 38px;
  border: 1px solid rgba(102, 195, 230, .24); border-radius: 16px;
  background: rgba(7, 22, 35, .94); box-shadow: 0 28px 80px rgba(0,0,0,.45);
}
.eyebrow { margin: 0 0 12px; color: #65c7e8; font-size: 12px; letter-spacing: .2em; }
h1 { margin: 0; font-size: 30px; font-weight: 650; }
.hint { margin: 12px 0 28px; color: #91aabd; line-height: 1.6; }
form { display: grid; gap: 10px; }
label { margin-top: 8px; color: #bed0dc; font-size: 14px; }
input {
  width: 100%; padding: 12px 13px; border: 1px solid #27455a; border-radius: 8px;
  color: #f4fbff; background: #06131e; outline: none;
}
input:focus { border-color: #50bbdf; box-shadow: 0 0 0 3px rgba(80,187,223,.14); }
button {
  margin-top: 14px; padding: 12px; border: 0; border-radius: 8px; cursor: pointer;
  color: #001018; background: linear-gradient(135deg, #6bd3ef, #3da2d2); font-weight: 700;
}
button:disabled { cursor: wait; opacity: .55; }
.message { min-height: 22px; margin: 4px 0 0; color: #ff9b9b; font-size: 14px; }
.site-filing {
  position: fixed; z-index: 2; right: 0; bottom: 16px; left: 0;
  text-align: center; font-size: 12px;
}
.site-filing a { color: #7891a3; text-decoration: none; }
.site-filing a:hover, .site-filing a:focus-visible { color: #b9d2e2; text-decoration: underline; }