:root {
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: #0f172a;
  background: #f8fafc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: #f8fafc;
}

.login-header {
  height: 70px;
  background: #fff;
  border-bottom: 1px solid #e2e8f0;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}

.login-header-inner {
  width: min(1280px, 100%);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
}

.login-logo { width: 32px; height: 32px; object-fit: cover; }

.login-main {
  min-height: calc(100vh - 70px);
  padding: 40px 20px 70px;
  display: grid;
  place-items: center;
}

.login-card {
  width: min(420px, 100%);
  padding: 36px;
  background: #fff;
  border: 1px solid #dbe3ee;
  border-radius: 12px;
  box-shadow: 0 18px 55px rgba(15, 23, 42, 0.08);
}

h1 { margin: 0 0 8px; font-size: 30px; line-height: 1.25; }

.login-description { margin: 0 0 28px; color: #64748b; font-size: 14px; line-height: 1.65; }

form { display: grid; gap: 10px; }

label { margin-top: 6px; color: #475569; font-size: 14px; font-weight: 700; }

input {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  background: #f8fbff;
  color: #0f172a;
  font: inherit;
  outline: none;
}

input:focus { border-color: #059669; box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.14); }

.login-error {
  margin: 4px 0 0;
  padding: 9px 11px;
  border: 1px solid #fecaca;
  border-radius: 8px;
  background: #fef2f2;
  color: #dc2626;
  font-size: 13px;
}

button {
  height: 48px;
  margin-top: 10px;
  border: 0;
  border-radius: 8px;
  background: #020617;
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:hover { background: #1e293b; }
button:disabled { opacity: 0.6; cursor: wait; }

@media (max-width: 520px) {
  .login-main { align-items: start; padding-top: 28px; }
  .login-card { padding: 28px 24px; }
}