.sr-only {
  position: absolute;
  display: block;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  clip: rect(0, 0, 0, 0);
  overflow: hidden;
}
.Clearfix::after {
  display: block;
  content: "";
  clear: both;
}

/* ==========================================================================
   인트로 히어로 — 밝은 톤의 "디지털 트윈 그리드" 시그니처
   ========================================================================== */
.id_01 {
  position: relative;
  height: 630px; /*기존760*/
  overflow: hidden;
  background: var(--ink);
}

.slides {
  position: absolute;
  inset: 0;
}
.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.4s var(--ease);
  filter: saturate(0.9) brightness(0.85);
}
.slide.active {
  opacity: 1;
}
.slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 21, 38, 0.42) 0%,
    rgba(10, 21, 38, 0.68) 65%,
    var(--ink) 100%
  );
}

/* signature: isometric data-grid overlay, evokes a digital-twin map of the city */
.id_01::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: linear-gradient(
      rgba(41, 224, 209, 0.14) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(41, 224, 209, 0.14) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(
    ellipse 90% 70% at 50% 35%,
    #000 30%,
    transparent 78%
  );
  -webkit-mask-image: radial-gradient(
    ellipse 90% 70% at 50% 35%,
    #000 30%,
    transparent 78%
  );
  animation: grid-drift 34s linear infinite;
}
@keyframes grid-drift {
  0% {
    background-position: 0 0, 0 0;
  }
  100% {
    background-position: 64px 128px, 64px 128px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .id_01::before {
    animation: none;
  }
}

.id_wrap {
  width: min(1400px, calc(100% - 40px));
  margin: 0 auto;
}

.id_wrap_tt {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  /* align-items: center;*/
  justify-content: center;
  text-align: center;
  padding-top: 120px;
}

.id_01_txt {
  color: #fff;
  animation: rise-in 0.9s var(--ease) both;
  animation-delay: 0.15s;
}
@keyframes rise-in {
  0% {
    opacity: 0;
    transform: translateY(26px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.id_01_eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--twin);
  border: 1px solid rgba(41, 224, 209, 0.35);
  border-radius: 30px;
  padding: 8px 20px;
  margin-bottom: 28px;
  background: rgba(41, 224, 209, 0.06);
}
.id_01_eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--twin);
  box-shadow: 0 0 0 4px rgba(41, 224, 209, 0.22);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

.id_01_tt {
  font-size: 24px;
  line-height: 1.4;
  margin-bottom: 24px;
}

span.ip_1 {
  display: block;
  font-size: 42px;
  color: #fff;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 22px;
}
span.ip_1 br {
  display: block;
}
.ip_1 strong {
  color: #47d8ff;
  font-weight: 900;
}
.main-title {
  margin: 0;
  width: min(850px, 100%);
  animation: fadeUp 0.8s ease both;
}

.main-title img {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: 30px;
}
span.ip_3 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 18px;
  color: #fff;
  /* color: var(--text-inverse-soft);*/
  letter-spacing: 0.02em;
}

.id_01_dt {
  padding-top: 10px;
  font-size: 15px;
  line-height: 1.5;
  color: #fff;
  /* color: var(--text-inverse-soft);*/
  font-weight: 300;
  max-width: 620px;
  margin: 0 auto;
}

/* 스크롤 표시 */
.scroll-indicator {
  position: relative;
  z-index: 10;
  margin-top: -70px;
  width: 100%;
  text-align: center;
  padding-bottom: 26px;
  cursor: pointer;
}
.scroll-indicator img {
  width: 30px;
  opacity: 0.85;
  animation: bounce 2.5s infinite;
  filter: brightness(0) invert(1);
}
@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(10px);
  }
  60% {
    transform: translateY(5px);
  }
}

/* ==========================================================================
   새로운 소식 섹션 — 밝은 카드형 레이아웃
   ========================================================================== */
.id_02 {
  background: var(--ink);
  position: relative;
  overflow: hidden;
}
.id_02::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    rgba(41, 224, 209, 0.08) 1px,
    transparent 1px
  );
  background-size: 26px 26px;
  opacity: 0.5;
  pointer-events: none;
}

.id_03 {
  width: 100%;
  position: relative;
  margin: 0 auto;
}

/* ==========================================================================
   시설예약 섹션
   ========================================================================== */
.id_04 {
  width: 100%;
  background: var(--surface-alt);
}
.id_04_mtx {
  text-align: center;
  padding-top: 50px;
}
.id_04_mtx .mtitt {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  color: var(--text);
}
.id_04_mtx .dtitt {
  font-size: 16px;
  margin-bottom: 15px;
  color: var(--text-soft);
  font-weight: 400;
  line-height: 1.7;
}

/* ==========================================================================
   주요기능 섹션 — 연결된 노드형 넘버링
   ========================================================================== */
.id_05 {
  position: relative;
  text-align: center;
  overflow: hidden;
  background: var(--surface);
  padding-top: 30px;
}
.id_05::after {
  content: url(../../images/home/main/bg_rt1.png);
  position: absolute;
  top: 0;
  right: 0px;
}
.id_05_hd {
  gap: 30px;

  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  max-width: 700px;
  margin-bottom: 10px;
}

.id_05_tt,
.id_05_st {
  margin-bottom: 0;
}

.id_05_st {
  margin-top: 12px;
}

.id_05_bt {
  flex-shrink: 0;
  margin-left: auto;
}
.id_05_bt a {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  color: #fff;
  background: var(--ink);
  padding: 17px 40px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.2px;
  border: 1px solid var(--ink);
  border-radius: 30px;
  gap: 10px;
  text-decoration: none;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}
.id_05_bt a:hover {
  background: var(--brand);
  border-color: var(--brand);
  transform: translateX(3px);
}

.id_05_tt {
  font-size: 32px;
  line-height: 1.25 !important;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin-bottom: 10px;
  text-align: left;
  color: var(--text);
}
.id_05_st {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 5px;
  text-align: left;
}
.id_05_dt {
  text-align: left;
  width: 100%;
  max-width: 700px;
}
.func-item {
  display: flex;
  gap: 15px;
  padding: 10px 0;
  border-bottom: 1px solid #e7edf4;
}

.func-item:last-child {
  border-bottom: 0;
}

.fui-num {
  flex: 0 0 18px;
  font-size: 15px;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: 0.08em;
}

.fui-txt strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.fui-txt p {
  margin: 2px 0;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.4;
}

/* ==========================================================================
   메인 메뉴 섹션
   ========================================================================== */
.id_06 {
  background: var(--surface-alt);
  padding-bottom: 20px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
#footer {
  position: relative;
  width: 100%;
  background: var(--ink);
}
#footer .contents_wrap {
  position: relative;
  float: none;
  margin: 0 auto;
  width: 100%;
  max-width: 1400px;
  padding: 40px 20px;
  box-sizing: border-box;
}
#footer .foot-head {
  display: block;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
#footer .foot-head > ul {
  display: block;
  height: 60px;
}
#footer .foot-head > ul > li {
  float: left;
  width: auto;
  position: relative;
  padding-right: 10px;
}
#footer .foot-head > ul > li:last-child {
  width: auto;
  float: right;
  padding: 0;
  margin-bottom: 10px;
}
#footer .foot-head > ul > li > a {
  text-decoration: none;
  display: block;
  text-align: left;
  font-size: 14px;
  padding: 12px 14px 12px 0;
  letter-spacing: -0.3px;
  color: var(--text-inverse-soft);
  transition: color 0.2s var(--ease);
}
#footer .foot-head > ul > li > a:hover {
  color: #fff;
}
#footer .foot-head > ul > li:last-child > a::after {
  content: "\f078";
  font-family: FontAwesome;
  position: absolute;
  right: 30px;
}
#footer .foot-head .link_site_box {
  display: inline-block;
  position: relative;
}
#footer .foot-head .link_site_list {
  display: none;
  position: absolute;
  left: 50%;
  bottom: 45px;
  width: 100%;
  background-color: #16233b;
  border-radius: 8px;
  overflow: hidden;
  text-align: center;
  transform: translateX(-50%);
  z-index: 9999;
}
#footer .foot-head .link_site_list > li:hover {
  background-color: var(--brand);
}
#footer .foot-head .link_site_list > li a {
  display: block;
  font-weight: 400;
  font-size: 14px;
  line-height: 34px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: #fff;
  text-decoration: none;
}
#footer .foot-head .link_site_btn {
  display: block;
  padding: 12px 24px;
  font-weight: 500;
  font-size: 14px;
  line-height: 18px;
  color: var(--text-inverse-soft);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 30px;
  border: 0;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
#footer .foot-head .link_site_btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}
#footer .foot-head .link_site_btn img {
  margin-left: 8px;
  margin-top: -3px;
  vertical-align: middle;
  transition: all 0.3s;
}

#footer .foot-body {
  display: block;
  width: 100%;
  overflow: hidden;
  padding: 28px 0 6px;
}
#footer .foot-body .address-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}
#footer .foot-body .address-logo img {
  width: 168px;
  height: auto;
  opacity: 0.92;
}
#footer .foot-body .foot-info {
  float: left;
}
#footer .foot-body .foot-info li {
  display: inline-block;
  font-size: 13px;
  line-height: 150%;
  padding-right: 25px;
  color: var(--text-inverse-soft);
  font-weight: 300;
}
#footer .foot-body .copyright {
  font-size: 12px;
  line-height: 150%;
  color: rgba(244, 247, 252, 0.45);
  margin-top: 10px;
  font-weight: 300;
  text-align: left;
}

/* 맨위로 */
#footer .up {
  position: relative;
  bottom: 0;
  left: 0;
  width: 100%;
  transition: opacity 0.25s linear, visibility 0.25s linear;
}
#footer .up_button {
  display: flex;
  font-size: 13px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  position: fixed;
  bottom: 40px;
  right: 30px;
  width: 64px;
  height: 64px;
  background-color: var(--surface);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  z-index: 10;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
#footer .up_button:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
#footer .up_button:before {
  content: url(../../images/home/btn_img.png);
  display: block;
  width: 16px;
  height: 16px;
}
#footer .up_button:after {
  display: block;
  text-align: center;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  content: "TOP";
}