:root {
  --ink: #06131f;
  --navy-950: #071827;
  --navy-900: #0a2235;
  --navy-800: #0d2f45;
  --teal-500: #23d1c3;
  --teal-400: #46ead6;
  --green-400: #9af07a;
  --cyan-100: #dffdf8;
  --white: #ffffff;
  --muted: #8ba2b6;
  --muted-dark: #c4d4e1;
  --line: rgba(255, 255, 255, 0.12);
  --glass: rgba(255, 255, 255, 0.08);
  --glass-strong: rgba(255, 255, 255, 0.14);
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
  --radius-xl: 36px;
  --radius-lg: 26px;
  --radius-md: 18px;
  --container: 1160px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background: #f5fbfa;
  line-height: 1.6;
  word-break: keep-all;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(circle at 20% 10%, rgba(35, 209, 195, 0.16), transparent 30%),
    radial-gradient(circle at 85% 25%, rgba(154, 240, 122, 0.14), transparent 30%),
    linear-gradient(180deg, #f6fffd 0%, #edf8f7 48%, #f8fbfb 100%);
}

img, svg { display: block; max-width: 100%; }

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

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

.skip-link {
  position: absolute;
  top: -80px;
  left: 20px;
  background: var(--teal-500);
  color: #00131c;
  padding: 10px 14px;
  border-radius: 999px;
  z-index: 100;
}
.skip-link:focus { top: 20px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(7, 24, 39, 0.78);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.brand-logo {
  width: 154px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  font-weight: 700;
}

.nav a {
  padding: 10px 12px;
  border-radius: 999px;
  transition: 0.25s ease;
}

.nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.nav-cta {
  color: #04202a !important;
  background: linear-gradient(135deg, var(--teal-400), var(--green-400));
  box-shadow: 0 12px 30px rgba(35, 209, 195, 0.22);
}

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 74% 26%, rgba(35, 209, 195, 0.24), transparent 24%),
    radial-gradient(circle at 88% 76%, rgba(154, 240, 122, 0.16), transparent 25%),
    linear-gradient(135deg, #06131f 0%, #0b2438 42%, #0d3a45 100%);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero::before {
  width: 760px;
  height: 760px;
  right: -280px;
  top: -240px;
  border: 1px solid rgba(70, 234, 214, 0.22);
}

.hero::after {
  width: 520px;
  height: 520px;
  left: -260px;
  bottom: -240px;
  background: radial-gradient(circle, rgba(35, 209, 195, 0.16), transparent 66%);
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  opacity: 0.48;
  background-image:
    linear-gradient(rgba(255,255,255,0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(circle at 70% 45%, #000 0%, rgba(0,0,0,0.75) 35%, transparent 78%);
}

.hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 54px;
  align-items: center;
  min-height: 760px;
  padding: 82px 0 96px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--teal-400);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid rgba(70, 234, 214, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
}

.eyebrow span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green-400);
  box-shadow: 0 0 0 7px rgba(154, 240, 122, 0.14);
}

.hero h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(46px, 7vw, 86px);
  line-height: 0.98;
  letter-spacing: -0.075em;
}

.hero-lead {
  max-width: 650px;
  margin: 26px 0 0;
  color: rgba(234, 249, 249, 0.82);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 900;
  transition: 0.25s ease;
}

.btn.primary {
  color: #05212b;
  background: linear-gradient(135deg, var(--teal-400), var(--green-400));
  box-shadow: 0 22px 44px rgba(35, 209, 195, 0.22);
}

.btn.primary:hover { transform: translateY(-2px); }

.btn.ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.06);
}

.btn.ghost:hover { background: rgba(255, 255, 255, 0.12); }

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 620px;
  margin-top: 42px;
}

.hero-meta div {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-meta strong {
  display: block;
  font-size: 22px;
  letter-spacing: -0.04em;
}

.hero-meta span {
  display: block;
  margin-top: 2px;
  color: rgba(234, 249, 249, 0.68);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  min-height: 560px;
}

.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(70, 234, 214, 0.18);
}

.orbit-one {
  inset: 12px 2px 18px 4px;
  animation: floatSlow 7s ease-in-out infinite;
}

.orbit-two {
  inset: 76px 74px;
  border-color: rgba(154, 240, 122, 0.16);
  animation: floatSlow 8s ease-in-out infinite reverse;
}

.glass-panel {
  background: linear-gradient(180deg, rgba(255,255,255,0.14), rgba(255,255,255,0.05));
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.main-panel {
  position: absolute;
  inset: 56px 24px 54px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.panel-head {
  display: flex;
  gap: 8px;
  padding: 22px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.panel-head span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.48);
}

.panel-head span:first-child { background: var(--teal-400); }
.panel-head span:nth-child(2) { background: var(--green-400); }

.flow-map {
  position: relative;
  height: calc(100% - 55px);
  padding: 24px;
}

.flow-map svg {
  position: absolute;
  inset: 38px 26px 26px;
  width: calc(100% - 52px);
  height: calc(100% - 64px);
}

.flow-map path,
.flow-map circle {
  fill: none;
  stroke: rgba(70, 234, 214, 0.48);
  stroke-width: 2;
  stroke-dasharray: 8 10;
}

.flow-map circle {
  stroke: rgba(154, 240, 122, 0.35);
  stroke-dasharray: 5 9;
}

.node,
.center-core {
  position: absolute;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-weight: 900;
}

.node {
  width: 78px;
  height: 78px;
  color: #05212b;
  font-size: 13px;
  background: linear-gradient(135deg, rgba(70, 234, 214, 0.98), rgba(154, 240, 122, 0.94));
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.22);
}

.node-a { left: 42px; top: 38px; }
.node-b { right: 42px; top: 40px; }
.node-c { left: 50%; top: 50%; transform: translate(-50%, -50%); }
.node-d { left: 48px; bottom: 42px; }
.node-e { right: 38px; bottom: 52px; }

.center-core {
  width: 124px;
  height: 124px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  text-align: center;
  line-height: 1.08;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.24), rgba(10,34,53,0.86));
  border: 1px solid rgba(255,255,255,0.22);
  box-shadow: 0 0 80px rgba(35, 209, 195, 0.2);
}

.mini-card {
  position: absolute;
  z-index: 3;
  width: 220px;
  padding: 18px 18px 16px;
  border-radius: 22px;
  color: #fff;
  background: rgba(6, 19, 31, 0.72);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.28);
}

.mini-card span {
  display: inline-block;
  margin-bottom: 4px;
  color: var(--green-400);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.mini-card strong {
  display: block;
  font-size: 18px;
  letter-spacing: -0.04em;
}

.card-top { top: 20px; right: 0; }
.card-bottom { left: 0; bottom: 20px; }

.signal-strip {
  margin-top: -58px;
  position: relative;
  z-index: 5;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: 0 22px 70px rgba(6, 19, 31, 0.18);
  background: rgba(7, 24, 39, 0.88);
  border: 1px solid rgba(255,255,255,0.12);
}

.signal-grid article {
  padding: 30px 28px;
  color: #fff;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.035));
}

.signal-icon {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 13px;
  color: #06131f;
  background: linear-gradient(135deg, var(--teal-400), var(--green-400));
  font-weight: 900;
  font-size: 13px;
}

.signal-grid h3 {
  margin: 0 0 8px;
  font-size: 20px;
  letter-spacing: -0.05em;
}

.signal-grid p {
  margin: 0;
  color: rgba(234, 249, 249, 0.74);
  font-size: 14px;
}

.section {
  padding: 116px 0;
}

.split-layout {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 70px;
  align-items: center;
}

.split-layout.reverse { grid-template-columns: 0.9fr 1.1fr; }

.section-copy h2,
.section-heading h2,
.centered-title,
.cta-panel h2 {
  margin: 0;
  color: #071827;
  font-size: clamp(32px, 4.2vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.07em;
}

.section-copy p:not(.section-kicker),
.section-heading p:not(.section-kicker),
.cta-panel p {
  margin: 22px 0 0;
  color: #486173;
  font-size: 17px;
}

.text-link {
  display: inline-flex;
  margin-top: 28px;
  color: #087a72;
  font-weight: 900;
}

.text-link::after {
  content: "→";
  margin-left: 8px;
}

.feature-stack {
  display: grid;
  gap: 14px;
}

.feature-card {
  position: relative;
  overflow: hidden;
  padding: 28px 30px;
  border-radius: 28px;
  background: rgba(255,255,255,0.84);
  border: 1px solid rgba(7,24,39,0.08);
  box-shadow: 0 18px 50px rgba(9, 53, 65, 0.08);
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(180deg, var(--teal-500), var(--green-400));
}

.feature-card.active {
  color: #fff;
  background: linear-gradient(135deg, var(--navy-900), #0d3e48);
  border-color: rgba(70, 234, 214, 0.22);
}

.feature-card strong {
  display: block;
  font-size: 22px;
  letter-spacing: -0.05em;
}

.feature-card span {
  display: block;
  margin-top: 6px;
  color: #668092;
}

.feature-card.active span { color: rgba(234, 249, 249, 0.72); }

.trusted {
  padding: 72px 0 88px;
  background: #071827;
  color: #fff;
  overflow: hidden;
}

.trusted .centered-title { color: #fff; }
.centered { text-align: center; }
.centered-title { text-align: center; max-width: 780px; margin: 0 auto; }

.logo-row {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  margin-top: 36px;
}

.logo-row span {
  display: grid;
  place-items: center;
  min-height: 78px;
  border-radius: 22px;
  color: rgba(234, 249, 249, 0.76);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
  font-weight: 900;
  letter-spacing: 0.08em;
  font-size: 13px;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 42px;
}
.section-heading.narrow { margin-left: auto; margin-right: auto; text-align: center; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 560px;
  padding: 24px;
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(7,24,39,0.08);
  box-shadow: 0 28px 70px rgba(9, 53, 65, 0.1);
}

.product-card.featured {
  color: #fff;
  background:
    radial-gradient(circle at 80% 10%, rgba(70,234,214,0.24), transparent 28%),
    linear-gradient(145deg, #071827, #0c3540);
  border-color: rgba(70, 234, 214, 0.2);
  transform: translateY(-18px);
}

.product-visual {
  height: 190px;
  border-radius: 28px;
  margin-bottom: 26px;
  background:
    radial-gradient(circle at 70% 20%, rgba(154, 240, 122, 0.5), transparent 18%),
    linear-gradient(135deg, #0a2235, #23d1c3);
  position: relative;
  overflow: hidden;
}

.product-visual::before {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(255,255,255,0.34);
  border-radius: 24px;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,0.12) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,0.12) 1px, transparent 1px);
  background-size: 28px 28px;
}

.product-visual::after {
  content: "";
  position: absolute;
  width: 84px;
  height: 84px;
  right: 32px;
  bottom: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.26);
  border: 1px solid rgba(255,255,255,0.36);
}

.product-visual.wallet { background: linear-gradient(135deg, #06131f, #176c68 60%, #9af07a); }
.product-visual.app { background: linear-gradient(135deg, #0d2f45, #23d1c3); }

.label {
  margin: 0 0 10px;
  color: #087a72;
  font-weight: 900;
  font-size: 12px;
  letter-spacing: 0.16em;
}

.featured .label { color: var(--green-400); }

.product-card h3 {
  margin: 0 0 18px;
  font-size: 28px;
  line-height: 1.15;
  letter-spacing: -0.06em;
}

.product-card ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #516879;
}

.featured ul { color: rgba(234, 249, 249, 0.76); }

.product-card li {
  position: relative;
  padding-left: 22px;
}

.product-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal-500), var(--green-400));
}

.product-card a {
  display: inline-flex;
  width: fit-content;
  margin-top: auto;
  padding-top: 28px;
  color: #087a72;
  font-weight: 900;
}

.product-card a::after { content: "→"; margin-left: 8px; }
.featured a { color: var(--teal-400); }

.dark-band {
  color: #fff;
  background:
    radial-gradient(circle at 18% 18%, rgba(35,209,195,0.17), transparent 26%),
    linear-gradient(145deg, #06131f, #0b2438 48%, #0a373e);
}

.dark-band .section-copy h2,
.dark-band .section-copy p { color: #fff; }
.dark-band .section-copy p:not(.section-kicker) { color: rgba(234, 249, 249, 0.72); }

.business-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.business-grid article {
  min-height: 190px;
  padding: 26px;
  border-radius: 28px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
}

.business-grid h3 {
  margin: 0 0 10px;
  font-size: 23px;
  letter-spacing: -0.05em;
}

.business-grid p {
  margin: 0;
  color: rgba(234, 249, 249, 0.72);
}

.tech-board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 42px;
}

.tech-column {
  padding: 30px 24px;
  border-radius: 28px;
  background: rgba(255,255,255,0.88);
  border: 1px solid rgba(7,24,39,0.08);
  box-shadow: 0 18px 55px rgba(9,53,65,0.08);
}

.tech-column h3 {
  margin: 0 0 18px;
  color: #087a72;
  letter-spacing: -0.05em;
}

.tech-column span {
  display: block;
  padding: 12px 0;
  color: #516879;
  border-top: 1px solid rgba(7,24,39,0.08);
  font-weight: 700;
}

.partner {
  padding-top: 40px;
}

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 54px;
  border-radius: var(--radius-xl);
  color: #fff;
  background:
    radial-gradient(circle at 90% 20%, rgba(154,240,122,0.28), transparent 28%),
    linear-gradient(135deg, #071827, #0b3c46);
  box-shadow: 0 28px 80px rgba(6,19,31,0.22);
}

.cta-panel h2 { color: #fff; }
.cta-panel p { color: rgba(234,249,249,0.76); max-width: 720px; }
.btn.light { box-shadow: none; white-space: nowrap; }

.contact-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
  align-items: start;
}

.contact-card {
  padding: 36px;
  border-radius: var(--radius-xl);
  background: #fff;
  box-shadow: 0 24px 70px rgba(9,53,65,0.1);
  border: 1px solid rgba(7,24,39,0.08);
}

.contact-card dl {
  display: grid;
  gap: 0;
  margin: 0;
}

.contact-card dl > div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(7,24,39,0.08);
}

.contact-card dl > div:first-child { padding-top: 0; }
.contact-card dl > div:last-child { border-bottom: 0; padding-bottom: 0; }

.contact-card dt {
  color: #087a72;
  font-weight: 900;
}

.contact-card dd {
  margin: 0;
  color: #263f50;
  font-weight: 800;
}

.site-footer {
  color: rgba(234,249,249,0.72);
  background: #06131f;
  padding: 62px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 0.7fr;
  gap: 50px;
}

.site-footer .footer-brand {
  display: inline-flex;
  margin: 0;
}
.site-footer p { margin: 16px 0 0; }
.site-footer h4 { margin: 0 0 14px; color: #fff; }
.site-footer a { display: block; margin: 8px 0; }
.site-footer a:hover { color: var(--teal-400); }
.copyright {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-14px) scale(1.01); }
}

@media (max-width: 1040px) {
  .nav { display: none; }
  .hero-layout,
  .split-layout,
  .split-layout.reverse,
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .hero-layout { min-height: auto; }
  .hero-visual { min-height: 520px; }
  .signal-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-grid { grid-template-columns: 1fr; }
  .product-card.featured { transform: none; }
  .tech-board { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logo-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cta-panel { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 700px) {
  .container { width: min(100% - 28px, var(--container)); }
  .brand-logo { width: 136px; }
  .hero-layout { padding: 64px 0 80px; gap: 30px; }
  .hero h1 { font-size: clamp(42px, 14vw, 62px); }
  .hero-lead { font-size: 16px; }
  .hero-meta { grid-template-columns: 1fr; }
  .hero-visual { min-height: 440px; }
  .main-panel { inset: 48px 0; }
  .mini-card { width: 190px; }
  .card-top { right: 8px; }
  .card-bottom { left: 8px; }
  .node { width: 62px; height: 62px; font-size: 11px; }
  .center-core { width: 104px; height: 104px; font-size: 15px; }
  .signal-strip { margin-top: -36px; }
  .signal-grid { grid-template-columns: 1fr; }
  .section { padding: 82px 0; }
  .section-copy h2,
  .section-heading h2,
  .centered-title,
  .cta-panel h2 { font-size: 36px; }
  .business-grid,
  .tech-board,
  .footer-grid { grid-template-columns: 1fr; }
  .logo-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-panel { padding: 34px 26px; }
  .contact-card { padding: 26px; }
  .contact-card dl > div { grid-template-columns: 1fr; gap: 4px; }
}