:root {
  --bg: #16181c;
  --bg-alt: #1b1e24;
  --card: #22252b;
  --accent: #d64545;
  --link: #7bb8ff;
  --text: #eee;
  --text-dim: #aaa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Arial, sans-serif;
  line-height: 1.5;
}

a { color: var(--link); }

.hero {
  background: radial-gradient(1200px 500px at 50% -100px, #2a1e1e, var(--bg));
  padding-bottom: 60px;
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: inherit;
  text-decoration: none;
}

.brand:hover {
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 24px;
}

.nav-links a {
  color: #ccc;
  text-decoration: none;
  font-size: 14.5px;
}

.nav-links a:hover { color: #fff; }

.hero-content {
  max-width: 720px;
  margin: 60px auto 0;
  text-align: center;
  padding: 0 24px;
}

h1 {
  font-size: 40px;
  line-height: 1.25;
  margin: 0 0 20px;
}

.accent { color: var(--accent); }

.subtitle {
  font-size: 16.5px;
  color: #ccc;
  margin: 0 0 32px;
}

.cta-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}

.btn.primary {
  background: var(--accent);
  color: white;
}

.btn.ghost {
  background: transparent;
  border: 1px solid #444;
  color: #eee;
}

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 70px 24px;
}

.section.alt { background: var(--bg-alt); max-width: none; }
.section.alt > * { max-width: 1100px; margin-left: auto; margin-right: auto; }

.section h2 {
  font-size: 26px;
  text-align: center;
  margin: 0 0 40px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card);
  border-radius: 12px;
  padding: 24px;
}

.card-icon { font-size: 30px; margin-bottom: 10px; }
.card h3 { font-size: 16.5px; margin: 0 0 8px; }
.card p { font-size: 14px; color: var(--text-dim); margin: 0; }

.download-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.download-card {
  background: var(--card);
  border-radius: 12px;
  padding: 28px;
}

.download-card h3 { margin-top: 0; }

.requirement {
  font-size: 12.5px;
  color: var(--text-dim);
  margin-top: 14px;
}

.help-section h2 { color: #fff; }

.help-intro {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 32px;
  color: var(--text-dim);
  font-size: 14.5px;
}

.help-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.help-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--card);
  border-radius: 10px;
  padding: 18px 20px;
  text-decoration: none;
  color: inherit;
}

.help-card strong { color: var(--link); font-size: 15px; }
.help-card span { font-size: 13px; color: var(--text-dim); }

.footer {
  text-align: center;
  padding: 30px 24px 50px;
  color: #666;
  font-size: 12.5px;
}

.lang-switch select {
  background: var(--card);
  color: var(--text);
  border: 1px solid #3a3d44;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
}

/* --- Mobil (Tablet & Smartphone) --- */
@media (max-width: 700px) {
  .navbar {
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
  }

  .nav-links {
    justify-content: center;
    gap: 4px 18px;
  }

  .hero-content {
    margin-top: 36px;
  }

  h1 {
    font-size: 28px;
  }

  .subtitle {
    font-size: 15px;
  }

  .cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    text-align: center;
  }

  .section {
    padding: 48px 18px;
  }

  .section h2 {
    font-size: 21px;
    margin-bottom: 28px;
  }

  .download-card,
  .card {
    padding: 20px;
  }
}

@media (max-width: 380px) {
  h1 {
    font-size: 24px;
  }
}