:root {
  --bg: #07111e;
  --panel: rgba(14, 24, 40, 0.72);
  --line: rgba(170, 198, 255, 0.12);
  --text: #eff5ff;
  --muted: #9dafc8;
  --accent: #8bd2ff;
  --accent-2: #78ffcb;
  --glow: 0 22px 70px rgba(3, 12, 28, 0.45);
  --max: 1220px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Pretendard Variable", "SUIT Variable", "Noto Sans KR", sans-serif;
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(circle at 15% 20%, rgba(109, 168, 255, 0.18), transparent 0 30%),
    radial-gradient(circle at 85% 12%, rgba(120, 255, 203, 0.14), transparent 0 24%),
    linear-gradient(180deg, #050c16 0%, #08111d 28%, #0b1524 100%);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }

.bg-grid {
  position: fixed; inset: 0; pointer-events: none; opacity: .08;
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 100px 100px;
}

.glow { position: fixed; border-radius: 999px; filter: blur(30px); pointer-events: none; }
.glow-1 { width: 320px; height: 320px; top: 90px; left: -40px; background: rgba(70,154,255,.18); }
.glow-2 { width: 280px; height: 280px; top: 420px; right: -60px; background: rgba(120,255,203,.14); }

.shell {
  position: relative;
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding: 22px 0 48px;
}

.header {
  position: sticky; top: 18px; z-index: 40;
  display: grid; grid-template-columns: auto 1fr auto; gap: 24px; align-items: center;
  padding: 16px 18px;
  border-radius: 26px;
  background: rgba(10, 19, 33, 0.72);
  border: 1px solid rgba(255,255,255,.07);
  backdrop-filter: blur(24px);
  box-shadow: var(--glow);
}

.logo { display: flex; align-items: center; gap: 14px; }
.logo-mark {
  width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 14px; background: linear-gradient(135deg, #7ad1ff, #84ffcf);
  color: #04111c; font-weight: 900;
}
.logo-copy { display: flex; flex-direction: column; }
.logo-copy strong { letter-spacing: .08em; }
.logo-copy em { color: var(--muted); font-style: normal; font-size: .76rem; text-transform: uppercase; letter-spacing: .08em; }

.nav { display: flex; justify-content: center; gap: 26px; color: var(--muted); }
.header-cta, .button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 18px; border-radius: 999px; font-weight: 800;
}
.header-cta, .ghost {
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
}

.hero {
  display: grid; grid-template-columns: 1.04fr .96fr; gap: 26px;
  padding: 88px 0 72px;
}
.eyebrow {
  margin: 0 0 14px; color: var(--accent); font-weight: 700; font-size: .82rem;
  letter-spacing: .18em; text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  font-size: clamp(3rem, 7vw, 6.1rem); line-height: .96; letter-spacing: -.06em; margin-bottom: 20px;
}
h1 span {
  color: transparent;
  background: linear-gradient(90deg, #dff5ff 0%, #86d4ff 34%, #7cffc8 100%);
  -webkit-background-clip: text; background-clip: text;
}
h2 { font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.02; letter-spacing: -.05em; margin-bottom: 16px; }
h3 { font-size: 1.22rem; margin-bottom: 10px; }
.lead, .section-copy p, .info-card li, .stack-card p, .flow-card p, .contact-copy p { color: var(--muted); }
.lead {
  max-width: 560px;
  font-size: 1.04rem;
}

.actions, .hero-tags { display: flex; flex-wrap: wrap; gap: 12px; }
.actions { margin: 30px 0 22px; }
.button.solid {
  color: #06131f;
  background: linear-gradient(135deg, #94dfff, #82ffcc);
  box-shadow: 0 18px 34px rgba(96,214,255,.24);
}
.button.block { width: 100%; margin-top: 8px; }
.hero-tags span, .panel-head span, .mini {
  display: inline-flex; align-items: center; padding: 8px 12px; border-radius: 999px;
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.06);
}

.panel {
  background: linear-gradient(180deg, rgba(16,27,46,.78), rgba(8,16,30,.82));
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: var(--glow);
  backdrop-filter: blur(18px);
}
.hero-panel, .info-card, .contact-card, .flow-card { border-radius: 30px; padding: 28px; }
.hero-panel {
  align-self: start;
}
.panel-head { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 24px; color: var(--muted); font-size: .88rem; }
.hero-panel h2 {
  max-width: 420px;
}
.hero-panel p {
  max-width: 420px;
}

.metrics {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 28px;
}
.metrics div {
  padding: 18px; border-radius: 22px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.06);
}
.metrics strong { display: block; margin-bottom: 6px; font-size: 2rem; line-height: 1; }
.metrics span { color: var(--muted); }

.section { padding: 56px 0; }
.section-copy { max-width: 760px; margin-bottom: 26px; }
.section-copy.narrow { max-width: 620px; }
.overview-grid, .flow-grid { display: grid; gap: 18px; }
.overview-grid { grid-template-columns: repeat(3, 1fr); }
.flow-grid { grid-template-columns: repeat(5, 1fr); }
.info-card.feature { transform: translateY(18px); }
.info-card ul { margin: 0; padding-left: 18px; }

.split {
  display: grid; grid-template-columns: .92fr 1.08fr; gap: 24px; align-items: start;
}
.stack { display: grid; gap: 14px; }
.stack-card {
  display: grid; grid-template-columns: 86px 1fr; gap: 18px; align-items: start;
  padding: 22px 24px; border-radius: 26px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.07);
}
.stack-card span {
  width: 64px; height: 64px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 20px; background: linear-gradient(135deg, rgba(139,210,255,.2), rgba(120,255,203,.18)); font-weight: 900;
}

.flow-card em {
  display: inline-flex; margin-bottom: 14px; font-style: normal; color: #ffc98a; font-weight: 800; letter-spacing: .12em;
}

#overview {
  padding-top: 92px;
}

.contact-wrap {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: stretch;
}
.contact-row {
  display: flex; justify-content: space-between; gap: 18px; padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.contact-row span { color: var(--muted); }

.footer {
  display: flex; justify-content: space-between; gap: 18px; padding: 34px 0 10px; color: var(--muted);
}
.footer strong { display: block; margin-bottom: 8px; color: #fff; }
.footer p { margin-bottom: 0; }
.footer-meta { display: flex; flex-direction: column; align-items: flex-end; justify-content: flex-end; gap: 8px; }

@media (max-width: 1100px) {
  .hero, .split, .contact-wrap, .overview-grid, .flow-grid { grid-template-columns: 1fr; }
  .info-card.feature { transform: none; }
}

@media (max-width: 780px) {
  .shell { width: min(calc(100% - 18px), var(--max)); padding-top: 14px; }
  .header { grid-template-columns: 1fr; justify-items: start; gap: 16px; }
  .nav { flex-wrap: wrap; justify-content: flex-start; gap: 14px; }
  .hero { padding-top: 42px; }
  .metrics { grid-template-columns: 1fr; }
  .stack-card { grid-template-columns: 1fr; }
  .footer, .footer-meta { flex-direction: column; align-items: flex-start; }
}