/* ==========================================================================
   UBITRON GLOBAL — Command Center Design System
   Tactical / Digital Twin / Intelligence-grade aesthetic
   ========================================================================== */

:root {
  /* Core palette — derived from SOC / tactical interfaces */
  --void: #03070f;
  --bg: #060b16;
  --bg-elev: #0a1426;
  --panel: #0e1a2e;
  --panel-2: #142238;
  --border: #1a2a45;
  --border-bright: #2a4368;

  /* Tactical accents — Singapore HQ (advanced / future-proof) */
  --cyan: #00d4ff;
  --cyan-soft: #5fe1ff;
  --cyan-deep: #0099cc;

  /* Heritage accents — Ubitron Korea lineage */
  --kr-navy: #0a2e5c;        /* deep Korean industrial navy */
  --kr-navy-soft: #1a4b8c;
  --kr-gold: #d4b15a;        /* heritage gold for awards / lineage */
  --kr-warm: #ffb347;        /* warm Korea node accent */

  /* Status */
  --amber: #ffb347;
  --gold: #d4b15a;
  --alert: #ff3b5c;
  --success: #2ee59d;

  /* Text */
  --ink: #e8f1ff;
  --ink-soft: #b9c8df;
  --ink-mute: #6b7c97;
  --ink-dim: #4a5a76;

  /* Type */
  --font-display: "Rajdhani", "Inter", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;

  /* Motion */
  --ease: cubic-bezier(.2,.7,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);

  /* Layout */
  --container: 1280px;
  --radius: 4px;
  --radius-lg: 8px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  /* Subtle global grid background */
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0,212,255,0.10), transparent 70%),
    radial-gradient(ellipse 60% 50% at 100% 100%, rgba(0,153,204,0.06), transparent 70%),
    linear-gradient(rgba(26,42,69,0.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,42,69,0.25) 1px, transparent 1px);
  background-size: auto, auto, 56px 56px, 56px 56px;
  background-attachment: fixed;
}

img { max-width: 100%; display: block; }
a { color: var(--cyan); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--cyan-soft); }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  margin: 0 0 .6em;
  color: var(--ink);
  line-height: 1.15;
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
p  { margin: 0 0 1em; color: var(--ink-soft); }

::selection { background: var(--cyan); color: var(--void); }

/* ==========================================================================
   Utilities
   ========================================================================== */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 120px 0; position: relative; }
.section--tight { padding: 80px 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px; height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.kicker {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--ink-mute);
}

.center { text-align: center; }
.muted  { color: var(--ink-mute); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px;
  font-family: var(--font-display);
  font-size: 14px; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase;
  border: 1px solid var(--cyan);
  background: linear-gradient(180deg, rgba(0,212,255,0.10), rgba(0,212,255,0.04));
  color: var(--cyan);
  cursor: pointer;
  transition: all .25s var(--ease);
  position: relative;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.btn:hover {
  background: var(--cyan);
  color: var(--void);
  box-shadow: 0 0 30px rgba(0,212,255,0.4);
}
.btn--ghost {
  background: transparent;
  border-color: var(--border-bright);
  color: var(--ink-soft);
}
.btn--ghost:hover {
  background: rgba(0,212,255,0.08);
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: none;
}
.btn--solid {
  background: var(--cyan);
  color: var(--void);
}
.btn--solid:hover {
  background: var(--cyan-soft);
  box-shadow: 0 0 40px rgba(0,212,255,0.5);
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(6,11,22,0.75);
  border-bottom: 1px solid var(--border);
  transition: all .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(3,7,15,0.92);
  border-bottom-color: var(--border-bright);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display);
  font-weight: 700; font-size: 18px; letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}
.brand:hover { color: var(--cyan); }
.brand-mark {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--cyan-deep), var(--cyan));
  clip-path: polygon(20% 0, 100% 0, 100% 80%, 80% 100%, 0 100%, 0 20%);
  position: relative;
}
.brand-mark::after {
  content: "";
  position: absolute; inset: 2px;
  background: var(--void);
  clip-path: polygon(20% 0, 100% 0, 100% 80%, 80% 100%, 0 100%, 0 20%);
}
.brand-mark svg { position: relative; z-index: 1; }
.brand-tag {
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 0.25em;
  color: var(--cyan); opacity: 0.8;
  display: block; margin-top: 2px;
}

.nav-links {
  display: flex; align-items: center; gap: 4px;
  list-style: none; margin: 0; padding: 0;
}
.nav-links a {
  display: block;
  padding: 10px 16px;
  font-family: var(--font-display);
  font-size: 13px; font-weight: 500; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  position: relative;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--cyan); }
.nav-links a.active::after {
  content: "";
  position: absolute; bottom: 0; left: 16px; right: 16px;
  height: 1px; background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
}

.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-status {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.nav-status::before {
  content: "";
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse 2s infinite;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-bright);
  color: var(--ink);
  width: 40px; height: 40px;
  cursor: pointer;
  padding: 0;
}

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

/* ==========================================================================
   Hero — Command Bridge
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px 0 80px;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 70% 40%, rgba(0,212,255,0.18), transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(0,153,204,0.10), transparent 55%);
  z-index: 0;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.05) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000, transparent 70%);
}
.hero-scan {
  position: absolute; left: 0; right: 0; top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.5;
  animation: scan 8s linear infinite;
  z-index: 1;
}
@keyframes scan {
  0% { transform: translateY(0); }
  100% { transform: translateY(100vh); }
}

.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px;
  align-items: center;
}
.hero-content { max-width: 640px; }
.hero h1 {
  font-size: clamp(2.6rem, 5.5vw, 4.6rem);
  line-height: 1.05;
  font-weight: 700;
}
.hero h1 .accent { color: var(--cyan); }
.hero-lede {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 560px;
  margin: 20px 0 36px;
}
.hero-meta {
  display: flex; gap: 28px; flex-wrap: wrap;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.hero-meta-item {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.hero-meta-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--cyan);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
  font-weight: 600;
}

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

/* HUD globe visual */
.hud {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 540px;
  margin-left: auto;
}
.hud svg { width: 100%; height: 100%; }

/* ==========================================================================
   Page header (for inner pages)
   ========================================================================== */
.page-header {
  padding: 160px 0 80px;
  position: relative;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 60% 80% at 50% 100%, rgba(0,212,255,0.12), transparent 70%),
    linear-gradient(180deg, var(--void), var(--bg));
}
.page-header h1 {
  max-width: 900px;
  margin-bottom: 18px;
}
.page-header p {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  max-width: 720px;
  color: var(--ink-soft);
}
.breadcrumb {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--ink-mute); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb span { color: var(--cyan); }

/* ==========================================================================
   Section heads
   ========================================================================== */
.section-head { max-width: 800px; margin-bottom: 60px; }
.section-head.center { margin-left: auto; margin-right: auto; }
.section-head h2 { margin-bottom: 16px; }
.section-head p { color: var(--ink-soft); font-size: 1.05rem; }

/* ==========================================================================
   Panels (tactical cards)
   ========================================================================== */
.panel {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-elev) 100%);
  border: 1px solid var(--border);
  padding: 32px;
  position: relative;
  transition: all .3s var(--ease);
}
.panel::before {
  content: "";
  position: absolute; top: 0; left: 0;
  width: 24px; height: 24px;
  border-top: 1px solid var(--cyan);
  border-left: 1px solid var(--cyan);
  opacity: 0.6;
}
.panel::after {
  content: "";
  position: absolute; bottom: 0; right: 0;
  width: 24px; height: 24px;
  border-bottom: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  opacity: 0.6;
}
.panel:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(0,212,255,0.08);
}
.panel:hover::before,
.panel:hover::after { opacity: 1; box-shadow: 0 0 8px var(--cyan); }

.panel-id {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.25em;
  color: var(--cyan);
  margin-bottom: 10px;
}
.panel h3 { margin-bottom: 10px; font-size: 1.3rem; }
.panel p { color: var(--ink-soft); font-size: 0.95rem; margin: 0; }

.panel-icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  color: var(--cyan);
  margin-bottom: 20px;
}

/* ==========================================================================
   Grids
   ========================================================================== */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--5 { grid-template-columns: repeat(5, 1fr); }

/* ==========================================================================
   Stats (animated counters)
   ========================================================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-elev), var(--panel));
  padding: 0;
}
.stat {
  padding: 40px 32px;
  border-right: 1px solid var(--border);
  position: relative;
}
.stat:last-child { border-right: none; }
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.stat-num .suffix { font-size: 0.6em; color: var(--ink-soft); margin-left: 2px; }
.stat-label {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-mute);
}

/* ==========================================================================
   Bridge / Two-column feature
   ========================================================================== */
.bridge {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.bridge-visual {
  position: relative;
  aspect-ratio: 5/4;
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, var(--panel), var(--bg-elev));
  overflow: hidden;
}
.bridge h2 { margin-bottom: 24px; }
.bridge-list { list-style: none; padding: 0; margin: 28px 0 0; }
.bridge-list li {
  display: flex; gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--border);
  align-items: flex-start;
}
.bridge-list li:first-child { border-top: none; }
.bridge-list .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.1em;
  padding-top: 2px;
  min-width: 32px;
}
.bridge-list strong { color: var(--ink); font-family: var(--font-display); display: block; margin-bottom: 4px; font-size: 1.05rem; }
.bridge-list span { color: var(--ink-soft); font-size: 0.95rem; }

/* ==========================================================================
   C5 Pentagon
   ========================================================================== */
.c5-section {
  background: linear-gradient(180deg, var(--bg), var(--void));
  position: relative;
}
.c5-pentagon-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.pentagon {
  position: relative;
  aspect-ratio: 1;
  max-width: 560px;
  margin: 0 auto;
}

/* ==========================================================================
   Partner logos
   ========================================================================== */
.partners {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 50px 0;
  background: var(--void);
}
.partners-label {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--ink-mute);
  text-align: center;
  margin-bottom: 32px;
}
.partners-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 40px;
  align-items: center;
}
.partner-logo {
  height: 36px;
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-weight: 600; letter-spacing: 0.15em;
  font-size: 14px;
  color: var(--ink-dim);
  text-transform: uppercase;
  transition: color .3s var(--ease);
  text-align: center;
}
.partner-logo:hover { color: var(--ink-soft); }

/* ==========================================================================
   Insights cards
   ========================================================================== */
.insight {
  background: var(--panel);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all .3s var(--ease);
  display: flex; flex-direction: column;
}
.insight:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,212,255,0.1);
}
.insight-img {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--panel-2), var(--bg-elev));
  position: relative;
  overflow: hidden;
}
.insight-img svg { width: 100%; height: 100%; opacity: 0.5; }
.insight-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.insight-tag {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}
.insight-body h3 { font-size: 1.15rem; margin-bottom: 10px; }
.insight-body p { font-size: 0.9rem; flex: 1; }
.insight-meta {
  font-family: var(--font-mono);
  font-size: 10px; color: var(--ink-mute);
  letter-spacing: 0.15em; text-transform: uppercase;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field--full { grid-column: 1 / -1; }
.field label {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--cyan);
}
.field input,
.field select,
.field textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 14px 16px;
  outline: none;
  transition: all .2s var(--ease);
  border-radius: 0;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(0,212,255,0.15);
}
.field textarea { resize: vertical; min-height: 140px; font-family: var(--font-body); }
.form-note {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.18em; color: var(--ink-mute);
  text-transform: uppercase; margin-top: 10px;
}

/* ==========================================================================
   Contact info panel
   ========================================================================== */
.contact-card {
  border: 1px solid var(--border);
  padding: 32px;
  background: linear-gradient(180deg, var(--panel), var(--bg-elev));
  margin-bottom: 20px;
  position: relative;
}
.contact-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px; background: var(--cyan); box-shadow: 0 0 8px var(--cyan);
}
.contact-card h3 {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 16px;
  font-size: 1.15rem;
}
.contact-card .role {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 8px;
}
.contact-card .addr { color: var(--ink-soft); font-size: 0.95rem; margin: 0; }
.contact-card .flag { font-size: 1.4rem; }

/* ==========================================================================
   CTA banner
   ========================================================================== */
.cta-banner {
  position: relative;
  overflow: hidden;
  padding: 100px 0;
  background: linear-gradient(135deg, var(--panel-2) 0%, var(--bg) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-banner::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.cta-banner > .container { position: relative; }
.cta-banner h2 { max-width: 720px; margin-bottom: 18px; }
.cta-banner p { max-width: 620px; margin-bottom: 32px; color: var(--ink-soft); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--void);
  border-top: 1px solid var(--border);
  padding: 80px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}
.footer-brand p {
  color: var(--ink-mute);
  font-size: 0.9rem;
  margin: 18px 0;
  max-width: 320px;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { color: var(--ink-soft); font-size: 0.9rem; }
.footer-col a:hover { color: var(--cyan); }

.footer-bar {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-dim);
}

/* ==========================================================================
   Reveal animations
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ==========================================================================
   Heritage components — Korean lineage
   ========================================================================== */

/* Heritage strip — sits below header on every page to reinforce lineage */
.heritage-strip {
  background: linear-gradient(90deg, var(--void) 0%, var(--kr-navy) 50%, var(--void) 100%);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--ink-soft);
  position: relative;
  overflow: hidden;
}
.heritage-strip::before {
  content: ""; position: absolute; inset: 0;
  background:
    repeating-linear-gradient(90deg, transparent 0 60px, rgba(212,177,90,0.08) 60px 61px);
  pointer-events: none;
}
.heritage-strip .container {
  display: flex; align-items: center; justify-content: center; gap: 24px; flex-wrap: wrap;
  position: relative;
}
.heritage-strip span { display: inline-flex; align-items: center; gap: 8px; }
.heritage-strip .kr-tag { color: var(--kr-gold); }
.heritage-strip .sg-tag { color: var(--cyan); }
.heritage-strip .divider { color: var(--ink-dim); }

/* Heritage timeline */
.heritage-timeline {
  position: relative;
  padding: 60px 0 40px;
}
.heritage-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  position: relative;
  gap: 0;
}
.heritage-track::before {
  content: "";
  position: absolute; left: 16%; right: 16%; top: 30px;
  height: 2px;
  background: linear-gradient(90deg, var(--kr-gold) 0%, var(--kr-warm) 45%, var(--cyan) 100%);
  z-index: 0;
}
.heritage-node {
  text-align: center;
  position: relative;
  padding: 0 16px;
}
.heritage-dot {
  width: 60px; height: 60px;
  margin: 0 auto 16px;
  display: grid; place-items: center;
  background: var(--bg);
  border: 2px solid var(--kr-gold);
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 700; font-size: 18px;
  color: var(--kr-gold);
  position: relative;
  z-index: 1;
}
.heritage-node--bridge .heritage-dot { border-color: var(--kr-warm); color: var(--kr-warm); }
.heritage-node--future .heritage-dot { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 30px rgba(0,212,255,0.3); }
.heritage-node--future .heritage-dot::after {
  content: ""; position: absolute; inset: -6px;
  border: 1px solid var(--cyan); border-radius: 50%;
  animation: pulseRing 2.4s infinite;
}
@keyframes pulseRing {
  0% { transform: scale(.9); opacity: 1; }
  100% { transform: scale(1.5); opacity: 0; }
}
.heritage-year {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.25em;
  color: var(--ink-mute);
  margin-bottom: 4px;
}
.heritage-place {
  font-family: var(--font-display);
  font-size: 18px; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 6px;
}
.heritage-role {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--kr-gold);
  margin-bottom: 12px;
}
.heritage-node--bridge .heritage-role { color: var(--kr-warm); }
.heritage-node--future .heritage-role { color: var(--cyan); }
.heritage-desc { font-size: 0.9rem; color: var(--ink-soft); max-width: 260px; margin: 0 auto; }

/* Hangul accent — subtle Korean characters as design watermark */
.hangul-mark {
  font-family: "Inter", "Noto Sans KR", system-ui, sans-serif;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--kr-gold);
  opacity: 0.85;
}

/* Korea badge — used in nav and footer */
.kr-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 0.2em; text-transform: uppercase;
  background: rgba(212,177,90,0.08);
  border: 1px solid rgba(212,177,90,0.3);
  color: var(--kr-gold);
}

/* Honor roll — proof point grid styled with heritage gold accents */
.honor-roll {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-elev), var(--panel));
}
.honor {
  padding: 32px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.honor:nth-child(3n) { border-right: none; }
.honor:nth-last-child(-n+3) { border-bottom: none; }
.honor-tag {
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--kr-gold);
  margin-bottom: 10px;
}
.honor h3 { font-size: 1.1rem; margin-bottom: 6px; }
.honor p { font-size: 0.88rem; color: var(--ink-soft); margin: 0; }
.honor-year {
  font-family: var(--font-mono);
  font-size: 10px; color: var(--ink-mute);
  letter-spacing: 0.18em; margin-top: 12px;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--5 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--border); }
  .partners-row { grid-template-columns: repeat(3, 1fr); gap: 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 820px) {
  .section { padding: 80px 0; }
  .hero { min-height: auto; padding: 130px 0 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hud { max-width: 380px; margin: 0 auto; }
  .bridge { grid-template-columns: 1fr; gap: 40px; }
  .c5-pentagon-wrap { grid-template-columns: 1fr; gap: 40px; }
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }

  .menu-toggle { display: grid; place-items: center; }
  .nav-links {
    position: fixed; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: rgba(3,7,15,0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
    gap: 4px;
    transform: translateY(-100%);
    transition: transform .3s var(--ease);
  }
  .nav-links.is-open { transform: translateY(0); }
  .nav-status { display: none; }
}

@media (max-width: 1024px) {
  .honor-roll { grid-template-columns: repeat(2, 1fr); }
  .honor:nth-child(3n) { border-right: 1px solid var(--border); }
  .honor:nth-child(2n) { border-right: none; }
}

@media (max-width: 820px) {
  .heritage-track { grid-template-columns: 1fr; gap: 32px; }
  .heritage-track::before { display: none; }
  .heritage-strip .container { gap: 12px; font-size: 9px; }
}

@media (max-width: 560px) {
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: none; }
  .partners-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-meta { gap: 20px; }
  .honor-roll { grid-template-columns: 1fr; }
  .honor { border-right: none !important; border-bottom: 1px solid var(--border); }
  .honor:last-child { border-bottom: none; }
}