* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Malgun Gothic", sans-serif;
  background: #f4f6fb;
  color: #111827;
}

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

.card {
  width: min(420px, 100%);
  padding: 32px;
  border-radius: 20px;
  background: #ffffff;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
  text-align: center;
}

h1 {
  margin: 0 0 12px;
  font-size: 28px;
}

p {
  margin: 0 0 24px;
  line-height: 1.6;
  color: #4b5563;
}

button {
  width: 100%;
  border: 0;
  border-radius: 14px;
  padding: 16px 20px;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  color: #ffffff;
  background: #2563eb;
}

button:hover {
  background: #1d4ed8;
}

button:active {
  transform: translateY(1px);
}

.filename {
  margin-top: 18px;
  margin-bottom: 0;
  font-size: 13px;
  word-break: break-all;
  color: #6b7280;
}