:root {
  color-scheme: light;
  --ink: #202624;
  --muted: #64706b;
  --line: #d8dedb;
  --surface: #ffffff;
  --canvas: #f4f6f5;
  --green: #176b4d;
  --green-deep: #0f573d;
  --green-soft: #e6f3ed;
  --red: #a52a2a;
  --red-soft: #fdeaea;
  --focus: #245d8a;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(23, 107, 77, .08), transparent 34%),
    linear-gradient(315deg, rgba(36, 93, 138, .08), transparent 30%),
    var(--canvas);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0;
}

button,
input {
  font: inherit;
  letter-spacing: 0;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 48px 20px;
}

.login-panel {
  width: min(100%, 420px);
  display: grid;
  gap: 22px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 22px 70px rgba(32, 38, 36, .11);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 7px;
  color: #fff;
  background: var(--green);
  font-weight: 800;
}

.brand-kicker {
  margin: 0 0 3px;
  color: var(--muted);
  font-size: 13px;
}

h1 {
  margin: 0;
  font-size: 25px;
  line-height: 1.2;
}

.login-error {
  border-left: 4px solid var(--red);
  background: var(--red-soft);
  color: var(--red);
  padding: 10px 12px;
}

.login-form {
  display: grid;
  gap: 16px;
}

.login-form label:not(.remember-choice) {
  display: grid;
  gap: 6px;
  color: #3e4743;
  font-weight: 600;
}

.login-form input[type="text"],
.login-form input[type="password"] {
  width: 100%;
  min-height: 42px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #bfc9c4;
  border-radius: 5px;
  padding: 8px 10px;
}

.login-form input:focus-visible,
.login-form button:focus-visible {
  outline: 3px solid rgba(36, 93, 138, .25);
  outline-offset: 2px;
  border-color: var(--focus);
}

.remember-choice {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #3e4743;
}

.remember-choice input {
  width: 16px;
  height: 16px;
  accent-color: var(--green);
}

.login-form button {
  min-height: 42px;
  border: 1px solid var(--green);
  border-radius: 5px;
  background: var(--green);
  color: #fff;
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 700;
}

.login-form button:hover {
  background: var(--green-deep);
}

@media (max-width: 560px) {
  .login-shell {
    align-items: start;
    padding: 28px 14px;
  }

  .login-panel {
    padding: 24px 18px;
  }

  h1 {
    font-size: 22px;
  }
}