:root {
  --bg: #f5f7fb;
  --text: #101828;
  --muted: #475467;
  --surface: #ffffff;
  --border: #d0d5dd;
  --shadow: 0 10px 30px rgba(16, 24, 40, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, #ffffff 0%, var(--bg) 70%);
  color: var(--text);
}

.container {
  width: min(100%, 460px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 2rem 1.25rem;
  text-align: center;
}

.logo {
  width: min(100%, 230px);
  height: auto;
  display: block;
  margin: 0 auto 1rem;
}

h1 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.2rem);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.subtitle {
  margin: 0.45rem 0 1.4rem;
  font-size: 1rem;
  color: var(--muted);
}

.links {
  display: grid;
  gap: 0.75rem;
}

.link-btn {
  display: block;
  width: 100%;
  text-decoration: none;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #101828, #344054);
  border: 1px solid #1d2939;
  border-radius: 12px;
  padding: 0.95rem 1rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}

.link-btn:hover,
.link-btn:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(16, 24, 40, 0.2);
  filter: brightness(1.08);
}

.link-btn:focus-visible {
  outline: 3px solid #98a2b3;
  outline-offset: 2px;
}

@media (max-width: 480px) {
  .container {
    padding: 1.5rem 1rem;
    border-radius: 16px;
  }

  .logo {
    width: min(100%, 190px);
  }
}