:root {
  color: #17212b;
  background: #edf1f3;
  font-family: Inter, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
}

.login-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(90deg, rgba(23, 33, 43, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(23, 33, 43, 0.04) 1px, transparent 1px),
    #edf1f3;
  background-size: 32px 32px;
}

.login-panel {
  width: min(100%, 400px);
  padding: 36px;
  border: 1px solid #d3dadd;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 48px rgba(23, 33, 43, 0.12);
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 6px;
  background: #147d70;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
}

.heading {
  margin: 22px 0 28px;
}

.product-name {
  margin: 0 0 8px;
  color: #65727d;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 26px;
  line-height: 1.25;
}

.heading > p:last-child {
  margin: 10px 0 0;
  color: #65727d;
  font-size: 14px;
}

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

label {
  font-size: 14px;
  font-weight: 600;
}

input {
  width: 100%;
  height: 44px;
  padding: 0 12px;
  border: 1px solid #aeb9bf;
  border-radius: 5px;
  background: #ffffff;
  color: #17212b;
  font: inherit;
  outline: none;
}

input:focus {
  border-color: #147d70;
  box-shadow: 0 0 0 3px rgba(20, 125, 112, 0.16);
}

.form-error {
  margin: 0;
  color: #b42318;
  font-size: 13px;
}

button {
  height: 44px;
  margin-top: 8px;
  border: 0;
  border-radius: 5px;
  background: #147d70;
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

button:hover {
  background: #0f685e;
}

button:focus-visible {
  outline: 3px solid rgba(20, 125, 112, 0.3);
  outline-offset: 2px;
}

@media (max-width: 480px) {
  .login-shell {
    padding: 16px;
  }

  .login-panel {
    padding: 28px 24px;
  }
}