:root {
  color: #111827;
  background: #eef2f4;
  font-family: Pretendard, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.45;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body { margin: 0; min-width: 320px; color: #111827; background: #eef2f4; }

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

:focus-visible { outline: 3px solid #0d9488; outline-offset: 2px; }

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  border-top: 5px solid #159b89;
}

.login-panel {
  width: min(100%, 392px);
  padding: 30px;
  border: 1px solid #cfd6dc;
  border-radius: 6px;
  background: #ffffff;
  box-shadow: 0 12px 34px rgba(19, 33, 43, .12);
}

.product-mark { margin: 0 0 5px; color: #0f766e; font-size: 11px; font-weight: 800; }

h1 { margin: 0; color: #16212b; font-size: 25px; line-height: 1.25; letter-spacing: 0; }

.access-label { margin: 5px 0 26px; color: #647180; font-size: 12px; }

form { display: grid; gap: 16px; }

label { display: grid; gap: 6px; color: #465261; font-size: 12px; font-weight: 700; }

input {
  width: 100%;
  min-height: 44px;
  padding: 9px 11px;
  border: 1px solid #aeb9c4;
  border-radius: 4px;
  color: #111827;
  background: #ffffff;
}

input:hover { border-color: #647180; }

button {
  min-height: 44px;
  margin-top: 2px;
  padding: 9px 14px;
  border: 1px solid #0b665e;
  border-radius: 4px;
  color: #ffffff;
  background: #0f766e;
  font-weight: 800;
  cursor: pointer;
}

button:hover { background: #0b665e; }

.login-error { margin: -2px 0 0; padding: 9px 10px; border-left: 4px solid #b42318; color: #8e1d15; background: #ffebe9; font-size: 12px; }

@media (max-width: 480px) {
  .login-shell { place-items: start center; padding: 64px 16px 24px; }
  .login-panel { padding: 24px 20px; }
}