/* 네피리티 — AI IaaS 랜딩 */
:root {
  --bg: #050810;
  --bg-elev: #0c1220;
  --bg-card: #111a2e;
  --border: rgba(148, 163, 184, 0.12);
  --text: #e8edf5;
  --muted: #94a3b8;
  --dim: #64748b;
  --accent: #22d3ee;
  --accent-dim: rgba(34, 211, 238, 0.15);
  --accent-2: #818cf8;
  --glow: rgba(34, 211, 238, 0.35);
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --max: 72rem;
  --r: 12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Background grid */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 20%, transparent 70%);
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(5, 8, 16, 0.75);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.brand:hover {
  text-decoration: none;
  color: var(--accent);
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #050810;
  font-size: 0.9rem;
  font-weight: 800;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}
.nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, #06b6d4, #6366f1);
  color: #fff;
  box-shadow: 0 0 0 0 var(--glow);
}
.btn-primary:hover {
  box-shadow: 0 0 24px var(--glow);
  text-decoration: none;
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover {
  background: var(--bg-card);
  text-decoration: none;
}

/* Hero */
.hero {
  padding: 4.5rem 0 5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--accent-dim);
  border: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 4.5vw, 2.85rem);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero h1 span {
  background: linear-gradient(120deg, #22d3ee, #a78bfa, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-lead {
  margin: 0 0 2rem;
  max-width: 36rem;
  font-size: 1.1rem;
  color: var(--muted);
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: 1.5rem;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--border);
  max-width: 32rem;
}

.stat {
  text-align: left;
}
.stat strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.stat span {
  font-size: 0.8rem;
  color: var(--dim);
}

/* Sections */
section {
  padding: 4rem 0;
}

.section-title {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-h2 {
  margin: 0 0 2.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
}

.card {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover {
  border-color: rgba(34, 211, 238, 0.25);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.08);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 1rem;
  border-radius: 8px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  font-size: 1.1rem;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
}

/* Diff */
.diff {
  display: grid;
  gap: 2rem;
  align-items: start;
}
@media (min-width: 52rem) {
  .diff {
    grid-template-columns: 1fr 1fr;
  }
}

.diff-box {
  padding: 2rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--r);
}
.diff ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.diff li {
  position: relative;
  padding: 0.6rem 0 0.6rem 1.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}
.diff li:last-child {
  border-bottom: 0;
}
.diff li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9rem;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--glow);
}

/* Who */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.pill {
  padding: 0.45rem 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--muted);
}

/* CTA band */
.cta {
  text-align: center;
  padding: 3.5rem 1.5rem;
  background: linear-gradient(160deg, var(--bg-elev) 0%, #0a1428 100%);
  border: 1px solid var(--border);
  border-radius: calc(var(--r) * 1.5);
  margin: 0 0 2rem;
}
.cta h2 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.cta p {
  margin: 0 0 1.5rem;
  color: var(--muted);
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
}

/* Footer */
.footer {
  padding: 2.5rem 0 2rem;
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}
.footer-brand {
  font-weight: 700;
  color: var(--text);
}
.footer-meta {
  font-size: 0.8rem;
  color: var(--dim);
  max-width: 20rem;
  line-height: 1.6;
}
.copyright {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--dim);
  text-align: center;
}

@media (max-width: 40rem) {
  .header-inner {
    flex-wrap: wrap;
  }
  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
  }
  .header-cta {
    margin-left: auto;
  }
}