:root {
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  color: #4c3c45;
  background: #f9edf1;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, .96), transparent 34%),
    radial-gradient(circle at 80% 10%, rgba(244, 188, 207, .48), transparent 28%),
    linear-gradient(145deg, #f9eef2, #f4d9e2 56%, #ead9e8);
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(100%, 480px);
  padding: clamp(28px, 7vw, 52px);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, .8);
  border-radius: 30px;
  background: rgba(255, 255, 255, .78);
  box-shadow: 0 28px 80px rgba(132, 81, 103, .18);
  backdrop-filter: blur(18px);
}

.login-heart {
  display: grid;
  width: 58px;
  height: 58px;
  margin: 0 auto 20px;
  place-items: center;
  border-radius: 50%;
  color: white;
  font-size: 27px;
  background: linear-gradient(135deg, #ed87aa, #d86491);
  box-shadow: 0 12px 28px rgba(218, 92, 137, .26);
}

.login-eyebrow {
  margin: 0 0 10px;
  color: #cf6f92;
  font-size: 13px;
  letter-spacing: .24em;
}

h1 {
  margin: 0;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: clamp(30px, 7vw, 42px);
  font-weight: 500;
  color: #6c4a5a;
}

.login-copy {
  margin: 16px 0 30px;
  color: #8c7480;
  line-height: 1.8;
}

label {
  display: block;
  margin-bottom: 9px;
  text-align: left;
  color: #69515c;
  font-size: 14px;
}

.password-row { display: grid; gap: 12px; }

input,
button {
  width: 100%;
  min-height: 48px;
  border-radius: 15px;
  font: inherit;
}

input {
  border: 1px solid #ead0da;
  padding: 0 16px;
  color: #4d3b44;
  background: rgba(255, 255, 255, .92);
  outline: none;
}

input:focus {
  border-color: #dd83a4;
  box-shadow: 0 0 0 4px rgba(221, 131, 164, .14);
}

button {
  border: 0;
  color: white;
  cursor: pointer;
  background: linear-gradient(135deg, #e782a7, #cf648d);
  box-shadow: 0 12px 24px rgba(203, 92, 132, .2);
}

button:disabled { cursor: wait; opacity: .65; }

.login-message {
  min-height: 24px;
  margin: 13px 0 0;
  color: #bf527b;
  font-size: 14px;
}

@media (max-width: 430px) {
  .login-shell { padding: 14px; }
  .login-card { border-radius: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; }
}