*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #0f172a;
  background: radial-gradient(circle at top left, #008ea4 0, #02131b 45%, #020617 100%);
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

.hero {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 1.5rem 3.5rem;
}

.hero-inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
  color: #e5e7eb;
}

.hero-logo {
  margin-bottom: 1.5rem;
}

.logo-img {
  height: 56px;
  max-width: 240px;
  width: auto;
  filter: drop-shadow(0 12px 30px rgba(15, 23, 42, 0.9));
}

.hero-title {
  font-size: clamp(2.25rem, 3vw + 1rem, 3.25rem);
  line-height: 1.1;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.hero-subtitle {
  max-width: 620px;
  margin: 0 auto;
  font-size: 0.98rem;
  line-height: 1.7;
  color: #cbd5f5;
}

.info-panel {
  max-width: 540px;
  margin: 2.25rem auto 0;
}

.panel {
  background: radial-gradient(circle at top left, rgba(0, 142, 164, 0.12), rgba(15, 23, 42, 0.94));
  border-radius: 1.25rem;
  padding: 1.5rem 1.75rem 1.4rem;
  text-align: left;
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.7);
}

.panel h2 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: #e5e7eb;
}

.panel p {
  font-size: 0.92rem;
  line-height: 1.65;
  color: #cbd5f5;
}

.subscribe-form {
  margin-top: 0.85rem;
}

.input-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.input-group input[type="email"] {
  flex: 1 1 180px;
  min-width: 0;
  padding: 0.65rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(125, 211, 252, 0.8);
  background-color: rgba(15, 23, 42, 0.85);
  color: #e5e7eb;
  outline: none;
  font-size: 0.9rem;
}

.input-group input::placeholder {
  color: rgba(148, 196, 214, 0.98);
}

.input-group input:focus-visible {
  border-color: #38bdf8;
  box-shadow: 0 0 0 1px #38bdf8;
}

.input-group button {
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  border: none;
  background: #38bdf8;
  color: #0b1120;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.55);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
}

.input-group button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.7);
  filter: brightness(1.05);
}

.input-group button:active {
  transform: translateY(0);
  box-shadow: 0 4px 18px rgba(56, 189, 248, 0.45);
}

.form-note {
  margin-top: 0.55rem;
  font-size: 0.78rem;
  color: rgba(148, 163, 184, 0.95);
}

.site-footer {
  border-top: 2px solid #f97373;
  padding: 1rem 1.5rem 1.4rem;
  background: linear-gradient(to top, rgba(2, 8, 23, 0.98), rgba(15, 23, 42, 0.9));
  color: #9ca3af;
  font-size: 0.78rem;
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 768px) {
  body {
    background-attachment: scroll;
  }

  .panel {
    padding: 1.25rem 1.25rem;
  }

  .hero {
    padding-top: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-inner {
    text-align: left;
  }

  .hero-title {
    font-size: 2.1rem;
  }

  .hero-subtitle {
    font-size: 0.9rem;
  }

  .support-links {
    align-items: flex-start;
  }

  .support-item {
    justify-content: flex-start;
  }

}