html, body {
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #080C1D;
  <!-- min-height: 100svh; -->
  min-height: 100dvh;
  overflow-x: hidden;
  position: relative;
}

/* background fixed */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;

  background-image: url("../universe.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

/* overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;

  background: rgba(0, 0, 0, 0.5);
}

body {
  min-height: 100svh;
  overflow-x: hidden;
}

.back-btn,
.lang-switch a {
  color: #ddd;
}
a {
  color: #ddd;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 20px;
  text-align: center;
  padding-top: calc(64px + env(safe-area-inset-top));
  padding-bottom: calc(64px + env(safe-area-inset-bottom));
}

/* LOGO */
.logo {
  max-width: 300px;
  width: 40%;
  height: auto;
  margin-bottom: 24px;
filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.08));
}

.subtitle {
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 28px;
}

p {
  line-height: 1.7;
  margin: 10px 0;
  color: rgba(255, 255, 255, 0.85);
}

.message {
  margin-top: 44px;
  text-align: left;
  color: rgba(255, 255, 255, 0.7);
}

.section {
  margin-top: 44px;
  text-align: left;
  color: rgba(255, 255, 255, 0.7);
}

h2 {
  font-size: 18px;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.95);
}

/* APP CARD */
.app-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;

  border-radius: 14px;

  border: 1px solid rgba(255, 255, 255, 0.18);

  background: rgba(0, 0, 0, 0.28);

  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  box-shadow:
    0 10px 30px rgba(0, 0, 0, 0.45),
    0 0 0 2px rgba(120, 180, 255, 0.10),
    0 0 20px rgba(120, 180, 255, 0.15);

  transition: 0.2s ease;
}
    
.app-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.app-card:hover {
  transform: translateY(-3px);
  box-shadow:
    0 14px 40px rgba(0, 0, 0, 0.55),
    0 0 24px rgba(120, 180, 255, 0.2);
}   
 
.app-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  object-fit: cover;
}

.app-info h3 {
  margin: 0;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.95);
}

.app-info p {
  margin: 4px 0 0;
  color: #666;
  color: rgba(255, 255, 255, 0.8);
}

ul {
  padding-left: 20px;
}

.contact {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid #fff;
}

.contact .note {
  margin: 2px 0 0;
  font-size: 14px;
}

.phone {
  margin-top: 10px;
  color: #ccc;
}

.email {
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.7);
  text-shadow: 0 1px 6px rgba(0,0,0,0.6);
}

.footer {
  margin-top: 48px;
  font-size: 12px;
  color: #aaa;
}

/* =========================
   MOBILE OPTIMIZATION
========================== */
@media (max-width: 600px) {
  body::before {
    background-position: center top;
  }
  
  .container {
    padding: 48px 18px;
  }

  .logo {
    width: 70vw;
    max-width: none;
  }

  .section {
    margin-top: 36px;
  }

  h2 {
    font-size: 17px;
  }

  p {
    font-size: 15px;
  }

  .app-card {
    flex-direction: column;
    text-align: center;
  }

  .app-icon {
    width: 72px;
    height: 72px;
  }

  .app-info p {
    font-size: 13px;
  }
}

/* ScrollBar */
::-webkit-scrollbar {
  width: 8px;
}

/* ScrollBackground */
::-webkit-scrollbar-track {
  background: rgba(8, 12, 28, 0.5);
}

/* ScrollGrip */
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.5);
  border-radius: 10px;

  border: 2px solid #080C1D;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0);  
}

/* ScrollHover */
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.45);
}