* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}

body {
  background: #000;
  color: #fff;
  overflow-x: hidden;
}

/* HEADER */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 60px;
  border-bottom: 1px solid #222;
}

.logo {
  font-size: 25px;
  font-weight: 700;
}

.header nav a {
  color: #aaa;
  margin-left: 30px;
  text-decoration: none;
  transition: color 0.3s;
}

.header nav a:hover,
.header nav .active {
  color: #fff;
}

/* HERO */
.hero {
  display: flex;
  align-items: center;
  padding: 120px 60px 80px;
  gap: 60px;
}

.hero-text {
  flex: 1;
  animation: fadeUp 1s ease;
}

.hero-text h1 {
  font-size: 48px;
  margin-bottom: 20px;
}

.hero-text p {
  color: #ccc;
  font-size: 20px;
  margin-bottom: 25px;
}

.tips li {
  list-style: none;
  margin-bottom: 10px;
  color: #eee;
}

/* ABOUT SECTION */
.about {
  background: #fff;
  color: #000;
  padding: 80px 60px;
}

.about h2 {
  font-size: 40px;
  text-align: center;
  margin-bottom: 50px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
}

.step {
  border: 1px solid #ddd;
  border-radius: 20px;
  padding: 25px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.step span {
  font-size: 28px;
  font-weight: bold;
  color: #999;
}

.step h3 {
  margin: 15px 0;
}

.step p {
  color: #444;
}

.step:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* CTA */
.cta {
  margin-top: 70px;
  text-align: center;
}

.cta h3 {
  font-size: 28px;
}

.cta p {
  margin: 10px 0 30px;
  color: #555;
}

.cta button {
  background: #000;
  color: #fff;
  padding: 14px 36px;
  border: none;
  border-radius: 25px;
  font-size: 16px;
  cursor: pointer;
  transition: transform 0.3s, background 0.3s;
}

.cta button:hover {
  background: #222;
  transform: scale(1.05);
}

/* FOOTER */
.footer {
  background: #000;
  color: #777;
  text-align: center;
  padding: 20px;
  font-size: 14px;
}

/* ANIMATION */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* ===== TABLET 1024px ===== */
@media (max-width: 1024px) {
  .header {
    padding: 14px 50px;
  }

  .logo {
    font-size: 24px;
  }

  .header nav a {
    margin-left: 24px;
    font-size: 14px;
  }

  .hero {
    padding: 100px 50px 70px;
    gap: 50px;
  }

  .hero-text h1 {
    font-size: 44px;
    margin-bottom: 18px;
  }

  .hero-text p {
    font-size: 18px;
    margin-bottom: 20px;
  }

  .tips li {
    margin-bottom: 8px;
    font-size: 15px;
  }

  .about {
    padding: 70px 50px;
  }

  .about h2 {
    font-size: 36px;
    margin-bottom: 40px;
  }

  .steps {
    gap: 24px;
  }

  .step {
    padding: 22px;
  }

  .cta {
    margin-top: 60px;
  }

  .cta h3 {
    font-size: 26px;
  }

  .cta button {
    padding: 13px 28px;
    font-size: 15px;
    min-height: 46px;
  }
}

/* ===== TABLET 768px ===== */
@media (max-width: 768px) {

  .hero {
    flex-direction: column;
    padding: 80px 20px 40px;
    gap: 30px;
  }

  .hero-text h1 {
    font-size: 32px;
    margin-bottom: 14px;
  }

  .hero-text p {
    font-size: 14px;
    margin-bottom: 18px;
  }

  .tips li {
    margin-bottom: 6px;
    font-size: 13px;
  }

  .hero-image img {
    max-width: 100%;
    height: auto;
  }

  .about {
    padding: 50px 20px;
  }

  .about h2 {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .steps {
    gap: 20px;
  }

  .step {
    padding: 18px;
    border-radius: 14px;
  }

  .step span {
    font-size: 24px;
  }

  .step h3 {
    margin: 12px 0;
    font-size: 15px;
  }

  .step p {
    font-size: 13px;
  }

  .cta {
    margin-top: 50px;
  }

  .cta h3 {
    font-size: 22px;
  }

  .cta p {
    margin: 8px 0 20px;
    font-size: 13px;
  }

  .cta button {
    padding: 12px 20px;
    font-size: 14px;
    min-height: 46px;
    border-radius: 8px;
  }

  .footer {
    padding: 40px 20px 24px;
    font-size: 12px;
  }
}








/* ===== MOBILE (480px and below) ===== */
@media (max-width: 480px) {

  .hero {
    padding: 76px 15px 36px;
    gap: 20px;
  }

  .hero-text h1 {
    font-size: 24px;
    line-height: 1.3;
    margin-bottom: 12px;
  }

  .hero-text p {
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 14px;
  }

  .tips li {
    margin-bottom: 4px;
    font-size: 12px;
  }

  .hero-image img {
    max-width: 100%;
    height: auto;
  }

  .about {
    padding: 36px 15px;
  }

  .about h2 {
    font-size: 22px;
    margin-bottom: 20px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .step {
    padding: 14px;
    border-radius: 10px;
  }

  .step span {
    font-size: 20px;
  }

  .step h3 {
    margin: 8px 0;
    font-size: 13px;
  }

  .step p {
    font-size: 11px;
  }

  .cta {
    margin-top: 30px;
  }

  .cta h3 {
    font-size: 18px;
  }

  .cta p {
    margin: 6px 0 14px;
    font-size: 12px;
  }

  .cta button {
    padding: 10px 16px;
    font-size: 13px;
    min-height: 44px;
    max-width: 100%;
    width: 100%;
    border-radius: 6px;
  }

  .cta button:active {
    transform: scale(0.98);
  }

  .cta button:hover {
    transform: none;
  }

  .footer {
    padding: 24px 15px;
    font-size: 11px;
  }
}