:root {
  --bg: #0a1220;
  --bg2: #0d1c31;
  --text: #d7e3f3;
  --muted: #9eb3ca;
  --primary: #21c0ff;
  --card: #11253f;
  --white: #f4f8ff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 10%, #18345b 0%, var(--bg) 50%, #050a13 100%);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 4vw;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  background: rgba(10,18,32,0.85);
}
.site-header.compact h1 { font-size: 1.3rem; }
.brand-wrap { display: flex; align-items: center; gap: .9rem; }
.company-logo {
  width: 142px;
  max-width: 38vw;
  height: auto;
  display: block;
}
.logo-mark {
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(145deg, #2bd7ff, #0a5ddb);
  box-shadow: 0 0 20px rgba(33,192,255,0.45);
}
.brand-wrap h1 { margin: 0; letter-spacing: .04em; }
.brand-wrap p { margin: 0; color: var(--muted); font-size: .9rem; }
.site-header.compact .company-logo { width: 126px; }
nav { display: flex; gap: 1rem; }
nav a { color: var(--white); opacity: .9; }
nav a:hover { color: var(--primary); }

main { padding: 2.2rem 4vw 4rem; }
.section { margin-top: 3rem; }
.section h3 { font-size: 1.8rem; margin-bottom: 1.2rem; }
.hero {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 1.3rem;
  align-items: stretch;
}
.hero-content,
.hero-panel,
.card,
.feature-card {
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(170deg, rgba(31,67,110,.65), rgba(8,20,36,.78));
  border-radius: 16px;
  padding: 1.4rem;
}
.kicker {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: .6rem;
}
.hero h2 { margin-top: 0; font-size: 2rem; line-height: 1.3; }
.hero h2 span { color: var(--primary); }
.cta-group { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.2rem; }
.btn {
  border: 1px solid rgba(255,255,255,.34);
  padding: .65rem .95rem;
  border-radius: 999px;
}
.btn.primary {
  background: linear-gradient(145deg, #28d2ff, #0e6cff);
  border-color: transparent;
  color: #031225;
  font-weight: 700;
}
.hero-panel h3 { margin-top: 0; }
.hero-panel ul { margin: .3rem 0 0 1rem; padding: 0; }

.grid { display: grid; gap: 1rem; }
.grid.two { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0,1fr)); }
.feature-card { background: linear-gradient(160deg, #153056, #0b1729); }
.feature-card h4,
.card h4 { margin-top: 0; color: #7ddfff; }
.card ul { margin: .4rem 0 0 1rem; padding: 0; }

.section.dark {
  padding: 1rem 1.1rem 1.3rem;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 16px;
  background: linear-gradient(170deg, rgba(20,40,66,.9), rgba(7,14,26,.85));
}

.architecture {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: .8rem;
}
.architecture div {
  padding: .9rem;
  border-radius: 10px;
  background: #173359;
  border: 1px solid rgba(149,204,255,.35);
  text-align: center;
  font-weight: 600;
}
.note { color: #9bc3e8; font-size: .93rem; }
.contact { text-align: center; }
footer {
  border-top: 1px solid rgba(255,255,255,.13);
  text-align: center;
  padding: 1rem;
  color: var(--muted);
}

@media (max-width: 980px) {
  .hero,
  .grid.two,
  .grid.four,
  .architecture { grid-template-columns: 1fr; }
  nav { display: none; }
  .hero h2 { font-size: 1.55rem; }
}

.orchestration-stage {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(130, 194, 255, 0.32);
  border-radius: 20px;
  padding: 1.4rem;
  min-height: 320px;
  background:
    radial-gradient(circle at 18% 20%, rgba(46, 230, 255, 0.30), transparent 42%),
    radial-gradient(circle at 80% 78%, rgba(39, 96, 255, 0.30), transparent 40%),
    linear-gradient(145deg, #0a1a31 0%, #081423 48%, #070d18 100%);
  margin-bottom: 1.3rem;
}
.stage-overlay {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .36;
  pointer-events: none;
}
.stage-brand {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.stage-logo {
  width: clamp(160px, 28vw, 330px);
  filter: drop-shadow(0 0 16px rgba(33,192,255,0.45));
}
.stage-brand p {
  margin: 0;
  font-weight: 700;
  letter-spacing: .12em;
  color: #90d6ff;
  font-size: .84rem;
}
.signal-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.signal-grid span {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: radial-gradient(circle, #67ebff, #0e6cff);
  box-shadow: 0 0 14px rgba(103, 235, 255, .8);
  animation: pulse 3.6s infinite ease-in-out;
}
.signal-grid span:nth-child(1) { top: 20%; left: 16%; }
.signal-grid span:nth-child(2) { top: 30%; right: 26%; animation-delay: .6s; }
.signal-grid span:nth-child(3) { top: 62%; left: 33%; animation-delay: 1.1s; }
.signal-grid span:nth-child(4) { top: 58%; right: 10%; animation-delay: .2s; }
.signal-grid span:nth-child(5) { bottom: 20%; left: 12%; animation-delay: 1.6s; }
.signal-grid span:nth-child(6) { bottom: 12%; right: 32%; animation-delay: .9s; }
.flow-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.flow-lines i {
  position: absolute;
  left: -20%;
  width: 58%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(72, 195, 255, .95), transparent);
  animation: flow 5s linear infinite;
}
.flow-lines i:nth-child(1) { top: 42%; }
.flow-lines i:nth-child(2) { top: 56%; animation-delay: 1.3s; }
.flow-lines i:nth-child(3) { top: 70%; animation-delay: 2.6s; }
.stage-panels {
  position: relative;
  z-index: 2;
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
}
.stage-panels article {
  border: 1px solid rgba(139, 204, 255, .3);
  border-radius: 12px;
  padding: .8rem .9rem;
  background: rgba(7, 22, 39, .62);
  backdrop-filter: blur(3px);
}
.stage-panels h3 { margin: 0 0 .3rem; color: #81ddff; font-size: 1rem; }
.stage-panels p { margin: 0; font-size: .92rem; color: #d4ebff; }

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: .85; }
  50% { transform: scale(1.65); opacity: .35; }
}
@keyframes flow {
  0% { transform: translateX(0); opacity: .2; }
  20% { opacity: .95; }
  100% { transform: translateX(190%); opacity: .08; }
}

@media (max-width: 980px) {
  .stage-brand { flex-direction: column; align-items: flex-start; }
  .stage-panels { grid-template-columns: 1fr; }
}

.architecture-submenu .architecture-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1rem;
  align-items: start;
}
.architecture-side {
  border: 1px solid rgba(143, 204, 255, .33);
  background: rgba(8, 21, 36, .62);
  border-radius: 12px;
  padding: .85rem;
}
.architecture-side h4 {
  margin: 0 0 .6rem;
  color: #8bd7ff;
  font-size: 1rem;
}
.architecture-side img {
  width: 100%;
  display: block;
  border-radius: 10px;
  background: #f4f7fd;
}
@media (max-width: 980px) {
  .architecture-submenu .architecture-layout { grid-template-columns: 1fr; }
}

.architecture-figure {
  margin: 1.1rem 0 0;
  border: 1px solid rgba(143, 204, 255, .33);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(7, 19, 34, .55);
}
.architecture-figure img {
  width: 100%;
  display: block;
  background: #f4f7fd;
}

.idc-monitor {
  position: relative;
  z-index: 2;
  margin-top: .95rem;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: .85rem;
}
.rack-cluster {
  display: flex;
  gap: .55rem;
  align-items: flex-end;
}
.rack {
  width: 58px;
  height: 86px;
  border-radius: 8px;
  border: 1px solid rgba(119, 208, 255, .45);
  background: linear-gradient(180deg, rgba(14,42,70,.92), rgba(8,20,36,.92));
  box-shadow: inset 0 0 18px rgba(28, 163, 255, .16), 0 0 12px rgba(44,145,255,.18);
  position: relative;
  overflow: hidden;
  animation: rackPulse 2.8s ease-in-out infinite;
}
.rack:nth-child(2) { height: 98px; animation-delay: .35s; }
.rack:nth-child(3) { height: 78px; animation-delay: .7s; }
.rack i {
  display: block;
  height: 10px;
  margin: 9px 7px;
  border-radius: 3px;
  background: linear-gradient(90deg, rgba(85,240,255,.18), rgba(47,124,255,.75), rgba(85,240,255,.18));
  animation: scan 2.2s linear infinite;
}
.rack i:nth-child(2) { animation-delay: .4s; }
.rack i:nth-child(3) { animation-delay: .8s; }
.monitor-hud {
  border: 1px solid rgba(116, 191, 255, .35);
  border-radius: 11px;
  padding: .6rem .75rem;
  background: rgba(6, 19, 34, .7);
}
.monitor-hud strong {
  display: inline-block;
  font-size: .83rem;
  color: #8adfff;
  letter-spacing: .08em;
}
.monitor-hud p {
  margin: .35rem 0 .55rem;
  font-size: .75rem;
  color: #b9dcfb;
}
.hud-bars {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: .38rem;
}
.hud-bars b {
  display: block;
  height: 24px;
  border-radius: 4px;
  background: linear-gradient(180deg, #35d8ff, #165eff);
  animation: meter 1.8s ease-in-out infinite;
}
.hud-bars b:nth-child(2) { animation-delay: .25s; }
.hud-bars b:nth-child(3) { animation-delay: .5s; }
.hud-bars b:nth-child(4) { animation-delay: .75s; }

@keyframes rackPulse {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}
@keyframes scan {
  0% { opacity: .35; transform: translateX(-3px); }
  50% { opacity: 1; transform: translateX(2px); }
  100% { opacity: .35; transform: translateX(-3px); }
}
@keyframes meter {
  0%,100% { transform: scaleY(.45); transform-origin: bottom; opacity: .7; }
  50% { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
}
@media (max-width: 980px) {
  .idc-monitor { grid-template-columns: 1fr; }
}

.inquiry {
  border: 1px solid rgba(143, 204, 255, .28);
  border-radius: 14px;
  padding: 1.2rem;
  background: linear-gradient(170deg, rgba(14, 33, 57, .72), rgba(7, 17, 30, .85));
}
.inquiry-form {
  margin-top: .8rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem;
}
.inquiry-form label {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  font-size: .92rem;
  color: #cde2f8;
}
.inquiry-form input,
.inquiry-form textarea {
  border: 1px solid rgba(137, 194, 255, .35);
  border-radius: 10px;
  padding: .65rem .75rem;
  color: #eff7ff;
  background: rgba(8, 19, 34, .72);
  font: inherit;
}
.inquiry-form input:focus,
.inquiry-form textarea:focus {
  outline: 2px solid rgba(63, 166, 255, .55);
  outline-offset: 0;
}
.inquiry-form .full { grid-column: 1 / -1; }
.form-actions button {
  border: 0;
  border-radius: 999px;
  padding: .7rem 1.1rem;
  font-weight: 700;
  cursor: pointer;
  color: #03203a;
  background: linear-gradient(145deg, #45dbff, #1b82ff);
}
@media (max-width: 980px) {
  .inquiry-form { grid-template-columns: 1fr; }
}

.form-actions button:disabled {
  opacity: .75;
  cursor: wait;
}
.form-status {
  margin-top: .75rem;
  min-height: 1.3rem;
  font-size: .92rem;
}
.form-status.success { color: #7ff0c7; }
.form-status.error { color: #ff9ca8; }