:root {
      --red: #7D0A0A;
      --black: #212121;
      --white: #FFF;
      --cyan: #00BCD4;
      --gold: #ffe156;
    }
    body {
      margin: 0;
      font-family: 'Nunito', Arial, sans-serif;
      background: linear-gradient(120deg, var(--red) 0%, var(--black) 100%);
      color: var(--white);
    }
    header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 28px 8vw 16px 8vw;
      background: rgba(33,33,33,0.77);
      box-shadow: 0 4px 16px rgba(0,0,0,0.11);
    }
    .logo {
      font-size: 2.3rem;
      font-weight: 900;
      color: var(--cyan);
      letter-spacing: 2px;
    }
    nav a {
      color: var(--white);
      margin-left: 24px;
      text-decoration: none;
      font-weight: 700;
      font-size: 1.15rem;
      transition: color .2s;
    }
    nav a:hover { color: var(--cyan); }

    .hero {
      padding: 7vw 8vw 4vw 8vw;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 36px;
    }
    .hero-left {
      max-width: 540px;
    }
    .hero-title {
      font-size: 3.1rem;
      font-weight: 900;
      margin-bottom: 18px;
      color: var(--cyan);
      letter-spacing: -1.2px;
      line-height: 1.13;
      text-shadow: 0 3px 22px #0007;
    }
    .hero-desc {
      font-size: 1.22rem;
      color: #FDEBEB;
      margin-bottom: 32px;
      font-weight: 700;
    }
    .cta-btn {
      background: var(--red);
      color: var(--white);
      border: none;
      padding: 15px 44px;
      border-radius: 1.7rem;
      font-size: 1.25rem;
      font-weight: bold;
      letter-spacing: 1px;
      box-shadow: 0 4px 24px #7d0a0a44;
      cursor: pointer;
      transition: background .2s, transform .13s;
    }
    .cta-btn:hover { background: var(--cyan); color: var(--black); transform: scale(1.04); }

    .hero-img {
      flex: 1;
      min-width: 270px;
      max-width: 390px;
      aspect-ratio: 1/1;
      border-radius: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      
      overflow: hidden;
    }
    .hero-img img {
      width: 100%;
      height: auto;
      border-radius: 36px;
      box-shadow: 0 2px 20px #21212133;
      object-fit: cover;
      background: #f5f5f5;
    }
    .section {
      padding: 54px 8vw 30px 8vw;
      background: rgba(33,33,33,0.70);
      border-radius: 22px;
      margin: 36px 0 0 0;
      box-shadow: 0 4px 30px #0005;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 900;
      color: var(--cyan);
      margin-bottom: 18px;
    }
    .features-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 36px;
      margin-top: 24px;
    }
    .feature-card {
      flex: 1 1 220px;
      min-width: 200px;
      max-width: 290px;
      background: rgba(255,255,255,0.06);
      border-radius: 22px;
      padding: 26px 20px 24px 20px;
      color: var(--white);
      box-shadow: 0 4px 18px #7d0a0a22;
      text-align: center;
      transition: transform .12s, box-shadow .18s;
    }
    .feature-card:hover {
      transform: translateY(-7px) scale(1.05);
      box-shadow: 0 10px 30px #00bcd422;
    }
    .feature-emoji {
      font-size: 2.1rem;
      margin-bottom: 10px;
    }
    .feature-title {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .feature-desc {
      font-size: 1rem;
      color: #d2f8ff;
      font-weight: 600;
    }

    /* === Koin Section === */
    .coins-section {
      padding: 54px 8vw 38px 8vw;
      background: linear-gradient(135deg, #2f3542 60%, var(--cyan) 100%);
      border-radius: 25px;
      margin: 36px 0 0 0;
      box-shadow: 0 4px 30px #00bcd444;
    }
    .coins-title {
      font-size: 2rem;
      font-weight: 900;
      color: var(--gold);
      margin-bottom: 18px;
      text-shadow: 0 4px 24px #0009;
    }
    .coins-desc {
      color: #fff9df;
      font-size: 1.13rem;
      font-weight: 700;
      margin-bottom: 30px;
      max-width: 680px;
    }
    .coin-packages {
      display: flex;
      flex-wrap: wrap;
      gap: 34px;
      margin-top: 12px;
      margin-bottom: 18px;
    }
    .coin-card {
      flex: 1 1 180px;
      min-width: 160px;
      max-width: 240px;
      background: rgba(255,255,255,0.15);
      border-radius: 20px;
      padding: 24px 18px 20px 18px;
      color: #fffbe6;
      box-shadow: 0 2px 16px #7d0a0a15;
      text-align: center;
      transition: transform .13s, box-shadow .15s;
      position: relative;
      margin-bottom: 6px;
    }
    .coin-card:hover {
      transform: translateY(-8px) scale(1.05);
      box-shadow: 0 8px 28px #ffe15633;
      background: rgba(255,255,255,0.25);
    }
    .coin-amount {
      font-size: 1.55rem;
      font-weight: 900;
      color: var(--gold);
      margin-bottom: 7px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 7px;
    }
    .coin-emoji {
      font-size: 1.5rem;
    }
    .coin-price {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 13px;
      letter-spacing: .1px;
    }
    .buy-btn {
      background: var(--gold);
      color: var(--black);
      border: none;
      border-radius: 14px;
      padding: 9px 24px;
      font-size: 1.07rem;
      font-weight: 900;
      letter-spacing: .1px;
      cursor: pointer;
      box-shadow: 0 4px 12px #ffe15638;
      transition: background .18s, color .14s;
      margin-top: 4px;
    }
    .buy-btn:hover {
      background: var(--cyan);
      color: var(--white);
    }
    .coins-note {
      font-size: .99rem;
      color: #fff;
      margin-top: 19px;
      opacity: .75;
      max-width: 530px;
    }
    @media (max-width: 800px) {
      .hero { flex-direction: column; padding: 10vw 4vw 6vw 4vw;}
      header { flex-direction: column; gap: 15px;}
      .hero-left, .hero-img { max-width: 95vw;}
      .features-grid { flex-direction: column; gap: 22px;}
      .coin-packages { flex-direction: column; gap: 15px;}
    }
    footer {
      text-align: center;
      color: #d9e4e6;
      font-size: 1rem;
      padding: 34px 0 18px 0;
      margin-top: 48px;
      letter-spacing: 0.2px;
      background: rgba(33,33,33,0.8);
    }
    
    @media (max-width: 600px) {
  body {
    font-size: 15px;
    padding: 0;
  }
  header {
    flex-direction: column;
    gap: 10px;
    padding: 18px 4vw 10px 4vw;
  }
  .logo {
    font-size: 1.45rem;
  }
  nav {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 4px;
    margin-top: 8px;
  }
  nav a {
    font-size: 1rem;
    margin: 0 8px;
  }

  .hero {
    flex-direction: column;
    padding: 7vw 4vw 4vw 4vw;
    gap: 18px;
  }
  .hero-title {
    font-size: 2.1rem;
    margin-bottom: 10px;
    text-align: center;
  }
  .hero-desc {
    font-size: 1rem;
    margin-bottom: 16px;
    text-align: center;
  }
  .cta-btn {
    padding: 12px 24px;
    font-size: 1.06rem;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    display: block;
  }
  .hero-img {
    max-width: 96vw;
    border-radius: 20px;
    margin: 0 auto;
  }
  .hero-img img {
    border-radius: 18px;
  }

  .section, .coins-section {
    padding: 30px 3vw 20px 3vw;
    margin: 18px 0 0 0;
    border-radius: 14px;
  }
  .section-title,
  .coins-title {
    font-size: 1.33rem;
    margin-bottom: 12px;
    text-align: center;
  }
  .features-grid {
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
  }
  .feature-card {
    padding: 18px 8px 16px 8px;
    min-width: unset;
    max-width: 98vw;
  }

  .coin-packages {
    flex-direction: column;
    gap: 8px;
    margin: 0;
  }
  .coin-card {
    padding: 14px 6px 14px 6px;
    max-width: 98vw;
  }

  .coins-desc, .coins-note {
    font-size: .96rem;
    text-align: center;
    max-width: 99vw;
    margin: 0 auto 14px auto;
  }

  /* Download */
  #download img {
    height: 44px !important;
    margin-bottom: 12px;
  }

  #download div[style*='font-size:1.2rem'] {
    font-size: 1rem !important;
    margin-bottom: 12px !important;
  }
}

@media (max-width: 400px) {
  .hero-title { font-size: 1.2rem; }
  .cta-btn { font-size: .95rem; padding: 10px 10px; }
  .logo { font-size: 1rem; }
}