body {
      margin: 0;
      background-color: #000;
      font-family: 'Noto Sans KR', sans-serif;
	  font-weight:600;
      color: #00bfff;
    }

	#background-slideshow {
	  position: fixed;
	  top: 0;
	  left: 0;
	  width: 100%;
	  height: 100%;
	  z-index: -1;
	  background-size: cover;
	  background-position: center;
	  background-repeat: no-repeat;
	  transition: opacity 1.5s ease-in-out;
	  opacity: 1;
	}

    header {
      position: fixed;
      top: 0;
      width: 100%;
      background-color: rgba(0, 0, 0, 0.85);
      display: flex;
      justify-content: center;
      gap: 10rem;
      padding: 2rem 0;
      z-index: 999;
    }
    header a {
      color: #fff;
      text-decoration: none;
      font-weight: bold;
	  font-size:1.2rem;
	  
    }
    .section {
      max-width: 860px;
      margin: 0 auto;
      padding: 6rem 1rem 3rem;
      text-align: center;
    }
    .section img {
      max-width: 100%;
      height: auto;
    }

	.fade-slider {
	  position: relative;
	  width: 100%;
	  max-width: 860px;
	  aspect-ratio: 16 / 9;
	/*  overflow: hidden;
	  background: #111; /* 배경색으로 확인 쉽게 */*/
	}

	.fade-slider img {
	  position: absolute;
	  top: 0;
	  left: 0;
	  width: 100%;
	  height: auto;
	  opacity: 0;
	  transition: opacity 1s ease-in-out;
	  z-index: 0;
	}

	.fade-slider img.active {
	  opacity: 1;
	  z-index: 1;
	}



	.bna_bt {
	  display: inline-block;
	  padding: 0.6rem 2rem;
	  position: relative;
	  color: #00f0ff;
	  font-weight: 500;
	  font-size: 1.5rem;
	  text-decoration: none;
	  text-align: center;
	  z-index: 1;
	  border-radius: 999px;
	  overflow: hidden;
	  background: transparent;
	}

	.bna_bt::before {
	  content: "";
	  position: absolute;
	  top: -2px;
	  left: -2px;
	  right: -2px;
	  bottom: -2px;
	  background: linear-gradient(to bottom, #00f5ff, #009eff);
	  border-radius: inherit;
	  z-index: -1;
	}

	.bna_bt::after {
	  content: "";
	  position: absolute;
	  top: 2px;
	  left: 2px;
	  right: 2px;
	  bottom: 2px;
	  background: #000;
	  border-radius: inherit;
	  z-index: -1;
	  transition: background 0.3s;
	}

	.bna_bt:hover::after {
	  background: linear-gradient(to bottom, #20e4f1, #159be5);
	}

	.bna_bt:hover {
	  color: #000;
	}



    .title_first {
      margin-bottom: 1rem;
	  font-weight:900;
	  background: linear-gradient(to top, #20e4f1, #159be5);
	  background-clip: text;
	  -webkit-background-clip: text;
	  color: transparent;
	  padding:2rem;
      font-size: 6rem;
    }
    .title{
      font-size: 4.5rem;
      margin-bottom: 1rem;
	  font-weight:900;
	  background: linear-gradient(to top, #20e4f1, #159be5);
	  background-clip: text;
	  -webkit-background-clip: text;
	  color: transparent;
	  letter-spacing:-0.05em
    }

    .title2{
      font-size: 4.5rem;
      margin-bottom: 1rem;
	  font-weight:900;
	  color: #fff;
	  letter-spacing:-0.05em
    }

    .subtitle {
      font-size: 1.5rem;
      margin: 2rem 0 1rem;
      font-weight: bold;
      color: #ffffff;
    }
    .image-half {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 1rem;
      margin-top: 2rem;
    }
    .image-half img {
      width: 48%;
      min-width: 200px;
    }
    .product-specs {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 2rem;
      margin-top: 2rem;
    }
    .product-spec {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid #00bfff;
      border-radius: 8px;
      padding: 1rem;
      width: 360px;
      color: #fff;
    }
    .product-spec h3 {
      margin-bottom: 0.5rem;
      color: #00bfff;
    }
    .product-spec ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .product-spec li {
      margin: 0.25rem 0;
      font-size: 0.95rem;
    }

  .product-btn {
    margin-top: 1rem;
    padding: 0.5rem 1.5rem;
    font-size: 1rem;
    color: #00bfff;
    background: transparent;
    border: 2px solid #00bfff;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
  }


  .product-btn:hover {
    background: #00bfff;
    color: #000;
  }


	.product-btn:hover::after {
	  background: linear-gradient(to bottom, #20e4f1, #159be5);
	}

	.product-btn:hover {
	  color: #000;
	}


.product-images {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  max-width: 860px;
  margin: 0 auto;
}

.product-item {
  flex: 1 1 45%;
  max-width: 400px;
  text-align: center;
}

.product-item img {
  width: 100%;
  height: auto;
}

.product-btn {
  margin-top: 1rem;
  padding: 0.6rem 2rem;
  border-radius: 999px;
  background: #000;
  border: 2px solid #00f0ff;
  color: #00f0ff;
  font-weight: bold;
  font-size: 1.5rem;
  cursor: pointer;
  transition: background 0.3s, color 0.3s;
}

.product-btn:hover {
  background: #00f0ff;
  color: #000;
}



 .spec-table {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    justify-content: center;
    align-items: center;
  }
  .spec-label, .spec-value {
    border-radius: 30px;
    padding: 0.75rem;
    text-align: center;
    font-size: 0.95rem;
    border: 2px solid;
  }

  .spec-label {
    color: #21eaf2;
    border-color: #21eaf2;
	font-size:1.5em;
	font-weight:400;
	background-color: rgba(0, 0, 0, 0.8);
  }

  .spec-value {
    color: #00bfff;
    border-color: #00bfff;
	font-size:1.5em;
	background-color: rgba(0, 0, 0, 0.8);
  }


  .contact-subtitle {
    color: #00f0ff;
    font-size: 1.2rem;
    margin-bottom: 2rem;
	font-weight:400;
  }
  .contact-form {
    display: flex;
    justify-content: center;
  }
  .contact-box {
    border: 2px solid #00bfff;
    border-radius: 25px;
    padding: 4rem;
    width: 100%;
    max-width: 820px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
	background-color: rgba(0, 0, 0, 0.8);
  }
  .contact-box input,
  .contact-box textarea {
    background: transparent;
    border: none;
    border-bottom: 1px solid #ffffff;
    padding: 0.75rem 0;
    color: #fff;
    font-size: 1rem;
    outline: none;
  }
  .contact-box input::placeholder,
  .contact-box textarea::placeholder {
    color: #aaa;
  }
.contact-box button {
    padding: 0.75rem;
    border: none;
    border-radius: 999px;
    background: linear-gradient(to right, #00f5ff, #009eff);
    color: #000;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    transition: opacity 0.3s;
    width: 100%;
  }
  .contact-box button:hover {
    opacity: 0.8;
  }

  .footer {
    background: #000;
    padding: 4rem 1rem;
    color: #fff;
    font-size: 0.9rem;
  }
  .footer-content {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
  }
  .footer-title {
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(to top, #20e4f1, #159be5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
  }
  .footer-columns {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 5rem;
    text-align: left;
	color:#999;
	font-size:1.3em;
    font-weight: 400;
  }
  .footer-columns strong{
  font-size:1.5em;
  font-weight:600;
  color:#fff

  }
  .footer-columns div {
    min-width: 160px;
    line-height: 1.8;
  }

   /* 반응형 대응 */
  @media screen and (max-width: 768px) {
    .footer-columns {
      flex-direction: column;
      align-items: center;
      text-align: center;
    }
    .footer-columns div {
      min-width: unset;
    }
    .title {
      font-size: 3rem;
    }
    .contact-box {
      padding: 1.5rem;
    }

  .product-item {
    flex: 1 1 100%;
  }

  }

/* --- 공통 요소 폰트 사이즈 반응형 조정 --- */
.title, .title2, {
  font-size: clamp(2rem, 5vw, 4.5rem);
}


/* --- product item 2단 → 1단 --- */
@media screen and (max-width: 768px) {
  .product-item {
    flex: 1 1 100% !important;
    max-width: 100% !important;
  }
}

/* --- contact form 내부 여백 조정 --- */
@media screen and (max-width: 768px) {
  .contact-box {
    padding: 1.5rem !important;
  }
}

/* --- footer 타이틀과 컬럼 대응 --- */
@media screen and (max-width: 768px) {
  .footer-title {
    font-size: 2.5rem !important;
  }
  .footer-columns {
    gap: 2rem;
  }
}



/* --- contact form 내부 여백 조정 --- */
@media screen and (max-width: 768px) {

.title_first {
  font-size:4em ;
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1rem 0;
    z-index: 999;
}



  .contact-box {
    padding: 1.2rem !important;
  }

  .footer-title {
    font-size: 2rem !important;
  }

  .spec-label {font-size:0.9rem}

  .footer-columns {
    gap: 2rem;
  }

  .spec-table {
    font-size: 0.8rem !important;
  }
  .spec-value {
    font-size: 0.8rem !important;
  }

  header a {
    font-size: 0.9rem !important;
  }


.footer-columns {

    font-size: 1em;

}


}

.quick {
		position: fixed;
    width: 18%;
    max-width: 800px;
    margin: 0 auto;
    right: 10%;
    bottom: 0;
    font-size: 0px;
		
		}

@media only screen and (max-width: 960px) {

        .navbar {
            
		font-size:1em;
        }

.quick {
		
		position: fixed;
    width: 15%;
    max-width: 800px;
    margin: 0 auto;
    right: 10%;
    bottom: 0;
    font-size: 0px;

}
}

    </style>