/* ============================================
   NEXIS USA — Design Tokens & Base Styles
   ============================================ */

:root {
  /* Colors — primary green switchable via Tweaks */
  --nx-green: #00C896;
  --nx-green-alt: #4CAF50;
  --nx-green-dark: #00A67B;
  --nx-green-soft: #E6FAF3;

  --nx-navy: #1A2B4A;
  --nx-navy-soft: #2A3D5F;
  --nx-navy-muted: #5B6B85;

  --nx-white: #FFFFFF;
  --nx-off: #FAFBFC;
  --nx-gray-50: #F5F7FA;
  --nx-gray-100: #EDF1F5;
  --nx-gray-200: #DDE3EB;
  --nx-gray-300: #C2CBD6;
  --nx-gray-500: #7A8699;
  --nx-gray-700: #4A5568;

  /* Typography */
  --font-en: 'Montserrat', 'Inter', system-ui, sans-serif;
  --font-kr: 'Pretendard', 'Noto Sans KR', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Spacing scale */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;
  --sp-10: 128px;

  /* Radii */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 999px;

  /* Shadows */
  --sh-sm: 0 1px 2px rgba(26,43,74,.06), 0 1px 3px rgba(26,43,74,.04);
  --sh-md: 0 4px 12px rgba(26,43,74,.08), 0 2px 4px rgba(26,43,74,.04);
  --sh-lg: 0 12px 32px rgba(26,43,74,.10), 0 4px 8px rgba(26,43,74,.05);
  --sh-green: 0 8px 24px rgba(0, 200, 150, .25);

  /* Layout */
  --max-w: 1240px;
  --nav-h: 72px;

  /* Motion */
  --ease: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-en);
  font-size: 16px;
  line-height: 1.55;
  color: var(--nx-navy);
  background: var(--nx-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Korean text uses Pretendard */
.kr, [lang="ko"] {
  font-family: var(--font-kr);
  font-weight: 500;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-en);
  color: var(--nx-navy);
  margin: 0;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

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

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

/* ============================================
   Layout containers
   ============================================ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

.section {
  padding: var(--sp-9) 0;
}

.section-sm { padding: var(--sp-8) 0; }

@media (max-width: 768px) {
  .section { padding: var(--sp-8) 0; }
  .section-sm { padding: var(--sp-7) 0; }
}

/* ============================================
   Logo — uses actual PNG with color-tune filter
   ============================================ */
.nx-logo-img {
  height: 48px;
  width: auto;
  display: block;
  /* Tune the original logo's blue/green toward our site palette:
     slight hue-rotate + saturate to match navy/#00C896 accents. */
  filter: saturate(1.05) contrast(1.02);
}
.nx-logo-img.on-dark {
  /* On dark navy backgrounds, invert brightness component to keep contrast. */
  filter: brightness(0) invert(1) sepia(.15) saturate(1.2);
  opacity: .95;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--nx-gray-100);
  height: var(--nav-h);
}

.nav-inner {
  max-width: var(--max-w);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--sp-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
}

.nav-logo {
  display: flex;
  align-items: center;
  height: 48px;
}
.nav-logo svg { height: 48px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--nx-navy);
  letter-spacing: 0.01em;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: all .2s var(--ease);
}
.nav-links a:hover { color: var(--nx-green); }
.nav-links a.active {
  color: var(--nx-green);
  border-bottom-color: var(--nx-green);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

/* Language toggle */
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--nx-gray-200);
  border-radius: var(--r-pill);
  padding: 3px;
  background: var(--nx-white);
}
.lang-toggle button {
  border: 0;
  background: transparent;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--nx-navy-muted);
  padding: 4px 10px;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all .2s var(--ease);
}
.lang-toggle button.active {
  background: var(--nx-navy);
  color: #fff;
}

/* Mobile hamburger */
.nav-mobile-btn {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  width: 40px;
  height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
}
.nav-mobile-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--nx-navy);
  position: relative;
}
.nav-mobile-btn span::before,
.nav-mobile-btn span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--nx-navy);
}
.nav-mobile-btn span::before { top: -6px; }
.nav-mobile-btn span::after { top: 6px; }

@media (max-width: 900px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    gap: 0;
    padding: var(--sp-4) var(--sp-5);
    border-bottom: 1px solid var(--nx-gray-100);
    box-shadow: var(--sh-md);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--nx-gray-100); }
  .nav-links a:last-child { border-bottom: 0; }
  .nav-mobile-btn { display: inline-flex; }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--r-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .2s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--nx-green);
  color: #fff;
  box-shadow: var(--sh-green);
}
.btn-primary:hover {
  background: var(--nx-green-dark);
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(0, 200, 150, .32);
}

.btn-secondary {
  background: transparent;
  color: var(--nx-navy);
  border-color: var(--nx-gray-200);
}
.btn-secondary:hover {
  border-color: var(--nx-navy);
  background: var(--nx-white);
}

.btn-dark {
  background: var(--nx-navy);
  color: #fff;
}
.btn-dark:hover { background: var(--nx-navy-soft); }

.btn svg { width: 16px; height: 16px; }

/* ============================================
   Hero
   ============================================ */
.hero {
  padding: var(--sp-8) 0 var(--sp-9);
  background:
    radial-gradient(60% 80% at 100% 0%, rgba(0,200,150,.08), transparent 60%),
    radial-gradient(50% 60% at 0% 100%, rgba(26,43,74,.04), transparent 60%),
    var(--nx-white);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: var(--sp-8);
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--sp-7); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nx-green-dark);
  padding: 6px 12px;
  background: var(--nx-green-soft);
  border-radius: var(--r-pill);
  margin-bottom: var(--sp-5);
}
.eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--nx-green);
  box-shadow: 0 0 0 4px rgba(0, 200, 150, .18);
}

.hero h1 {
  font-size: clamp(36px, 5.2vw, 60px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-4);
}
.hero h1 .accent { color: var(--nx-green); }

.hero .kr-title {
  font-family: var(--font-kr);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 600;
  color: var(--nx-navy-muted);
  margin-bottom: var(--sp-5);
  letter-spacing: -0.01em;
}

.hero .sub {
  font-size: clamp(16px, 1.4vw, 18px);
  color: var(--nx-navy-muted);
  line-height: 1.6;
  max-width: 560px;
  margin-bottom: var(--sp-4);
}
.hero .sub.kr {
  font-family: var(--font-kr);
  font-size: 15px;
  color: var(--nx-gray-500);
  margin-bottom: var(--sp-6);
}

.hero-cta {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

/* ============================================
   Hero visual — network diagram
   ============================================ */
.hero-visual {
  /* Wrapper is transparent so the pills can float OUTSIDE the diagram card. */
  position: relative;
  aspect-ratio: 5/4;
  /* Give room for pills that sit above/below the diagram card */
  padding: 40px 0;
  margin-top: -40px;
  margin-bottom: -40px;
}
.hero-visual .hero-diagram {
  position: absolute;
  inset: 40px 0;
  border-radius: var(--r-xl);
  background: linear-gradient(160deg, #F7FBFA 0%, #EAF5F1 100%);
  overflow: hidden;
  border: 1px solid var(--nx-gray-100);
  box-shadow: var(--sh-lg);
}
.hero-visual .hero-diagram svg { position: absolute; inset: 0; width: 100%; height: 100%; }

/* Floating stat pill — anchored to the outer wrapper so it can overhang the card */
.stat-pill {
  position: absolute;
  background: #fff;
  border: 1px solid var(--nx-gray-100);
  border-radius: var(--r-md);
  padding: 10px 14px;
  box-shadow: var(--sh-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  z-index: 2;
  max-width: 220px;
}
.stat-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--nx-green); box-shadow: 0 0 0 4px rgba(0,200,150,.15); flex-shrink: 0; }
.stat-pill strong { font-weight: 700; color: var(--nx-navy); }
.stat-pill span { color: var(--nx-navy-muted); font-size: 12px; }

/* ============================================
   Metrics bar
   ============================================ */
.metrics {
  background: var(--nx-navy);
  color: #fff;
  padding: var(--sp-7) 0;
  position: relative;
  overflow: hidden;
}
.metrics::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(40% 60% at 90% 50%, rgba(0,200,150,.12), transparent 60%),
    radial-gradient(30% 60% at 10% 50%, rgba(0,200,150,.06), transparent 60%);
  pointer-events: none;
}
.metrics-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
}
@media (max-width: 800px) {
  .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: var(--sp-5); }
}
.metric {
  border-left: 2px solid rgba(0,200,150,.5);
  padding-left: var(--sp-4);
}
.metric .num {
  font-family: var(--font-en);
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 800;
  color: var(--nx-green);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.metric .lbl {
  font-size: 13px;
  color: rgba(255,255,255,.72);
  line-height: 1.4;
}

/* ============================================
   Section heading
   ============================================ */
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--sp-8);
}
.section-head.left { text-align: left; margin-left: 0; }
.section-head .eyebrow { margin-bottom: var(--sp-4); }
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-3);
}
.section-head .kr-sub {
  font-family: var(--font-kr);
  font-size: 15px;
  color: var(--nx-navy-muted);
  margin-bottom: var(--sp-3);
}
.section-head p {
  font-size: 17px;
  color: var(--nx-navy-muted);
  line-height: 1.6;
}

/* ============================================
   Service cards
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
}
@media (max-width: 1000px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .card-grid { grid-template-columns: 1fr; }
}

.service-card {
  background: #fff;
  border: 1px solid var(--nx-gray-100);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
  transition: all .25s var(--ease);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.service-card:hover {
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: var(--sh-lg);
}
.service-card:hover .service-icon {
  background: var(--nx-green);
  color: #fff;
}
.service-icon {
  width: 48px; height: 48px;
  border-radius: var(--r-md);
  background: var(--nx-green-soft);
  color: var(--nx-green-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--sp-4);
  transition: all .25s var(--ease);
}
.service-icon svg { width: 24px; height: 24px; }
.service-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--sp-2);
}
.service-card .kr-label {
  font-family: var(--font-kr);
  font-size: 13px;
  color: var(--nx-navy-muted);
  margin-bottom: var(--sp-3);
}
.service-card p {
  font-size: 14px;
  color: var(--nx-navy-muted);
  line-height: 1.55;
}
.service-card .arrow {
  position: absolute;
  bottom: var(--sp-5);
  right: var(--sp-5);
  color: var(--nx-gray-300);
  transition: all .25s var(--ease);
}
.service-card:hover .arrow {
  color: var(--nx-green);
  transform: translate(2px, -2px);
}

/* ============================================
   Feature rows (Why Nexis, Services detail)
   ============================================ */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
  align-items: center;
  padding: var(--sp-7) 0;
  border-bottom: 1px solid var(--nx-gray-100);
}
.feature-row:last-child { border-bottom: 0; }
.feature-row.reverse .fr-visual { order: -1; }
@media (max-width: 900px) {
  .feature-row { grid-template-columns: 1fr; gap: var(--sp-5); }
  .feature-row.reverse .fr-visual { order: 0; }
}

.fr-visual {
  aspect-ratio: 4/3;
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, #F7FBFA 0%, #EAF5F1 100%);
  border: 1px solid var(--nx-gray-100);
  overflow: hidden;
  position: relative;
}
.fr-visual svg { position: absolute; inset: 0; width: 100%; height: 100%; }

.fr-body h3 {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-3);
}
.fr-body .kr-sub {
  font-family: var(--font-kr);
  color: var(--nx-navy-muted);
  font-size: 14px;
  margin-bottom: var(--sp-4);
}
.fr-body p {
  color: var(--nx-navy-muted);
  font-size: 16px;
  margin-bottom: var(--sp-4);
  line-height: 1.65;
}
.fr-body ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.fr-body ul li {
  position: relative;
  padding-left: 28px;
  margin-bottom: var(--sp-3);
  color: var(--nx-navy);
  font-size: 15px;
  line-height: 1.5;
}
.fr-body ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 6px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--nx-green-soft);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'><path d='M2.5 6 L5 8.5 L9.5 3.5' stroke='%2300A67B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
}

/* ============================================
   Location callout
   ============================================ */
.location {
  background: var(--nx-off);
  border-top: 1px solid var(--nx-gray-100);
  border-bottom: 1px solid var(--nx-gray-100);
}
.location-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-7);
  align-items: center;
}
@media (max-width: 900px) {
  .location-inner { grid-template-columns: 1fr; }
}
.location-map {
  aspect-ratio: 16/10;
  border-radius: var(--r-lg);
  border: 1px solid var(--nx-gray-100);
  background: #fff;
  overflow: hidden;
  position: relative;
}
.location-map svg { position: absolute; inset: 0; width: 100%; height: 100%; }

/* ============================================
   CTA banner
   ============================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--nx-navy) 0%, #14223c 100%);
  color: #fff;
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--sp-6);
  align-items: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute; right: -80px; top: -80px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0,200,150,.18) 0%, transparent 70%);
}
.cta-banner h3 {
  color: #fff;
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--sp-3);
}
.cta-banner .kr-sub { font-family: var(--font-kr); color: rgba(255,255,255,.7); margin-bottom: var(--sp-4); }
.cta-banner p { color: rgba(255,255,255,.75); font-size: 16px; margin-bottom: 0; }
.cta-banner-actions {
  display: flex; gap: var(--sp-3); justify-content: flex-end; flex-wrap: wrap;
  position: relative; z-index: 1;
}
@media (max-width: 800px) {
  .cta-banner { grid-template-columns: 1fr; padding: var(--sp-6); }
  .cta-banner-actions { justify-content: flex-start; }
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--nx-navy);
  color: rgba(255,255,255,.75);
  padding: var(--sp-8) 0 var(--sp-5);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--sp-6);
  margin-bottom: var(--sp-7);
}
@media (max-width: 800px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-5); }
}
.footer h5 {
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li { margin-bottom: var(--sp-2); }
.footer a { color: rgba(255,255,255,.7); transition: color .2s var(--ease); }
.footer a:hover { color: var(--nx-green); }
.footer .brand-blurb {
  color: rgba(255,255,255,.6);
  line-height: 1.55;
  max-width: 320px;
  margin-top: var(--sp-3);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: var(--sp-4);
  display: flex;
  justify-content: space-between;
  color: rgba(255,255,255,.5);
  font-size: 13px;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

/* ============================================
   Page hero (interior pages)
   ============================================ */
.page-hero {
  padding: var(--sp-8) 0 var(--sp-7);
  background:
    radial-gradient(50% 70% at 80% 20%, rgba(0,200,150,.08), transparent 60%),
    var(--nx-off);
  border-bottom: 1px solid var(--nx-gray-100);
}
.page-hero .container { max-width: 900px; }
.page-hero h1 {
  font-size: clamp(32px, 4.4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-3);
}
.page-hero .kr-title {
  font-family: var(--font-kr);
  font-size: 18px;
  color: var(--nx-navy-muted);
  margin-bottom: var(--sp-4);
}
.page-hero p {
  font-size: 18px;
  color: var(--nx-navy-muted);
  line-height: 1.6;
  max-width: 680px;
}

/* Breadcrumb */
.crumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--nx-navy-muted);
  margin-bottom: var(--sp-4);
}
.crumb a { color: var(--nx-navy-muted); }
.crumb a:hover { color: var(--nx-green); }
.crumb .sep { color: var(--nx-gray-300); }
.crumb .current { color: var(--nx-green-dark); }

/* ============================================
   Forms
   ============================================ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}
@media (max-width: 700px) { .form-grid { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; }
.field.full { grid-column: 1 / -1; }
.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--nx-navy);
  margin-bottom: 6px;
}
.field label .req { color: var(--nx-green); margin-left: 2px; }
.field input,
.field select,
.field textarea {
  font-family: var(--font-en);
  font-size: 15px;
  color: var(--nx-navy);
  background: #fff;
  border: 1px solid var(--nx-gray-200);
  border-radius: var(--r-md);
  padding: 12px 14px;
  transition: all .2s var(--ease);
  width: 100%;
}
.field textarea { min-height: 120px; resize: vertical; font-family: var(--font-en); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--nx-green);
  box-shadow: 0 0 0 3px rgba(0,200,150,.15);
}
.field-help { font-size: 12px; color: var(--nx-navy-muted); margin-top: 4px; }

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-2);
}
@media (max-width: 500px) { .checkbox-group { grid-template-columns: 1fr; } }
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--nx-gray-200);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: all .2s var(--ease);
  font-size: 14px;
  background: #fff;
}
.checkbox-item:hover { border-color: var(--nx-green); }
.checkbox-item input { accent-color: var(--nx-green); width: 16px; height: 16px; }
.checkbox-item input:checked + span { color: var(--nx-green-dark); font-weight: 600; }

/* ============================================
   Facility specs
   ============================================ */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}
@media (max-width: 800px) { .specs-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .specs-grid { grid-template-columns: 1fr; } }
.spec {
  background: #fff;
  border: 1px solid var(--nx-gray-100);
  border-radius: var(--r-md);
  padding: var(--sp-5);
}
.spec .lbl {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--nx-navy-muted);
  margin-bottom: var(--sp-2);
}
.spec .val {
  font-size: 26px;
  font-weight: 800;
  color: var(--nx-navy);
  letter-spacing: -0.01em;
  line-height: 1.1;
  margin-bottom: 4px;
}
.spec .val.tbd { color: var(--nx-gray-300); font-size: 20px; font-weight: 600; }
.spec .val .u { font-size: 14px; font-weight: 600; color: var(--nx-navy-muted); }
.spec .kr { font-family: var(--font-kr); font-size: 12px; color: var(--nx-navy-muted); }

/* ============================================
   Process flow
   ============================================ */
.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-3);
  position: relative;
}
@media (max-width: 900px) { .flow { grid-template-columns: repeat(5, 1fr); gap: 8px; } }
@media (max-width: 600px) { .flow { grid-template-columns: 1fr; } }
.flow-step {
  background: #fff;
  border: 1px solid var(--nx-gray-100);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  text-align: center;
  position: relative;
}
.flow-step .num {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--nx-green-soft);
  color: var(--nx-green-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 10px;
}
.flow-step h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.flow-step .kr { font-family: var(--font-kr); font-size: 11px; color: var(--nx-navy-muted); }

/* ============================================
   Integration strip
   ============================================ */
.integrations {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  justify-content: center;
  align-items: center;
  padding: var(--sp-5) 0;
}
.integ-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: #fff;
  border: 1px solid var(--nx-gray-100);
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--nx-navy);
}
.integ-chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--nx-green); }

/* ============================================
   Utility
   ============================================ */
.text-center { text-align: center; }
.mt-4 { margin-top: var(--sp-4); }
.mt-6 { margin-top: var(--sp-6); }
.mb-6 { margin-bottom: var(--sp-6); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } }

/* Fade-in on scroll (JS enhances) */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}