:root {
  /* Match ECOSOC logo: blue card, white text, metallic silver accent */
  --bg: #0a1929;
  --surface: #0d2137;
  --surface-elevated: #132f4c;
  --border: rgba(255, 255, 255, 0.1);
  --border-silver: rgba(192, 192, 192, 0.4);
  --silver: #b8b8b8;
  --silver-bright: #d3d3d3;
  --silver-dim: rgba(200, 200, 200, 0.85);
  --text: #ffffff;
  --text-muted: #b0bec9;
  --radius: 14px;
  --radius-lg: 20px;
  --space: 1.25rem;
  --space-lg: 2.5rem;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --transition: 0.2s ease;
}
html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 172px;
  gap: var(--space-lg);
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 min(5vw, 2rem);
}
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .page-nav { display: none; }
}
.main-content { min-width: 0; max-width: 820px; }
.container { width: min(1200px, 92vw); margin: 0 auto; padding: 0 min(5vw, 2rem); }
.header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(10, 25, 41, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: 1rem;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: min(5vw, 2rem);
  padding-right: min(5vw, 2rem);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
}
.brand:hover { color: var(--silver-bright); }
.brand-logo { width: 56px; height: 32px; object-fit: contain; border-radius: 6px; mix-blend-mode: screen; }
.brand-seamun { width: 40px; height: 40px; object-fit: contain; display: block; }
.brand span { color: var(--silver); }
.nav-links {
  display: flex;
  gap: 0.15rem;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--silver-bright); background: rgba(192, 192, 192, 0.12); }
.hero {
  padding: 3.5rem 0 3rem;
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 min(5vw, 2rem);
}
.kicker {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.7rem;
  color: var(--silver);
  margin: 0 0 0.6rem;
  font-weight: 600;
}
h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.1;
  font-family: "DM Serif Display", Georgia, serif;
  font-weight: 400;
  color: var(--text);
  letter-spacing: -0.02em;
}
.lead { color: var(--text-muted); font-size: 1.05rem; margin: 0.75rem 0 0; max-width: 42ch; }
.meta { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: 1.25rem; }
.pill {
  border: 1px solid var(--border-silver);
  background: rgba(192, 192, 192, 0.1);
  color: var(--silver-bright);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.hero-logo-panel {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem;
  max-width: 220px;
  position: relative;
  overflow: hidden;
}
.hero-logo-panel::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--silver), var(--silver-bright));
  opacity: 0.9;
}
.hero-logo-panel img { width: 100%; height: auto; display: block; border-radius: 8px; mix-blend-mode: screen; }
section {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 4rem;
}
.section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--silver-dim);
  margin-bottom: 0.5rem;
}
h2 {
  margin: 0 0 0.6rem;
  font-size: 1.5rem;
  color: var(--text);
  font-family: "DM Serif Display", Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.section-intro { color: var(--text-muted); max-width: 48ch; margin-bottom: 1.25rem; font-size: 0.95rem; }
.grid {
  display: grid;
  gap: var(--space);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 1rem;
}
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--space-lg); align-items: start; }
.card {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  border-color: var(--border-silver);
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.01em;
}
.muted { color: var(--text-muted); font-size: 0.9rem; }
ul { margin: 0.35rem 0 0; padding-left: 1.1rem; color: var(--text-muted); font-size: 0.9rem; }
li { margin-bottom: 0.35rem; line-height: 1.5; }
.term-links a { color: var(--silver); text-decoration: none; }
.term-links a:hover { color: var(--silver-bright); text-decoration: underline; }
.resource-controls { margin-top: 0.75rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }
input[type="search"], select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
}
input[type="search"]::placeholder { color: var(--text-muted); }
select option { background: var(--surface-elevated); }
.btn {
  display: inline-block;
  margin-top: 0.6rem;
  color: #0a1929;
  background: linear-gradient(135deg, var(--silver) 0%, #8a8a8a 100%);
  border: none;
  border-radius: 10px;
  padding: 0.55rem 1rem;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: filter var(--transition), box-shadow var(--transition);
}
.btn:hover { filter: brightness(1.12); box-shadow: 0 4px 16px rgba(192, 192, 192, 0.35); }
details { margin-top: 0.5rem; }
summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  color: var(--silver-bright);
  font-size: 0.9rem;
  padding: 0.5rem 0;
  list-style: none;
  user-select: none;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.1rem; opacity: 0.9; }
details[open] summary::after { content: "−"; }
summary:hover { color: var(--silver); }
.compact-list { columns: 2; column-gap: 1.5rem; }
.compact-list li { break-inside: avoid; }
.page-nav {
  position: sticky;
  top: 5rem;
  padding-top: 0.5rem;
}
.page-nav p {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
}
.page-nav ul { list-style: none; padding: 0; margin: 0; }
.page-nav a {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.6rem;
  margin-left: 0;
  transition: color var(--transition), border-color var(--transition);
}
.page-nav a:hover { color: var(--silver-bright); }
.page-nav a.active { color: var(--silver); border-left-color: var(--silver); }
.footer {
  padding: 1.5rem 0 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}
.footer a { color: var(--silver); text-decoration: none; }
.footer a:hover { color: var(--silver-bright); }
@media (max-width: 820px) {
  .split, .hero-inner { grid-template-columns: 1fr; }
  .hero-logo-panel { max-width: 180px; }
  .compact-list { columns: 1; }
}

/* Payment gate – ECOSOC card tap against terminal */
#payment-gate {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#payment-gate.gate-unlocked { opacity: 0; visibility: hidden; pointer-events: none; }
.payment-terminal {
  text-align: center;
  position: relative;
}
.payment-terminal h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--silver-bright);
}
.payment-terminal p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.gate-machine {
  position: relative;
  display: inline-block;
  margin-bottom: 1rem;
  min-height: 200px;
}
.gate-terminal-img {
  display: block;
  width: min(320px, 85vw);
  height: auto;
  max-height: 280px;
  min-height: 180px;
  object-fit: contain;
}
.gate-drop-zone {
  position: absolute;
  inset: 0;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}
.gate-card {
  width: 28%;
  max-width: 90px;
  height: auto;
  aspect-ratio: 1.586/1;
  object-fit: contain;
  transition: transform 0.15s ease;
}
.gate-card-draggable {
  position: fixed;
  left: 50%;
  top: 55%;
  transform: translate(-50%, -50%);
  cursor: grab;
  pointer-events: auto;
  z-index: 101;
  mix-blend-mode: screen;
}
.gate-card-draggable:active {
  cursor: grabbing;
}
.gate-machine.tap-active .gate-card-draggable {
  animation: card-tap 0.5s ease;
}
@keyframes card-tap {
  0% { transform: translate(-50%, -50%) scale(1); }
  35% { transform: translate(-50%, -50%) translate(-18px, 8px) scale(0.98); }
  70% { transform: translate(-50%, -50%) translate(-14px, 6px) scale(1); }
  100% { transform: translate(-50%, -50%) translate(-6px, 2px) scale(1); }
}
.gate-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
}
.gate-success {
  display: none;
  color: var(--silver-bright);
  font-weight: 600;
  margin-top: 0.5rem;
}
#payment-gate.gate-success .gate-success { display: block; }
.gate-skip {
  display: block;
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
}
.gate-skip:hover { color: var(--silver-bright); }

.home-grid {
  display: grid;
  gap: var(--space);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  max-width: 900px;
  margin: 2rem auto 0;
  padding: 0 min(5vw, 2rem);
}
.link-card {
  display: block;
  text-decoration: none;
  color: inherit;
}
.link-card:hover .card { border-color: var(--border-silver); box-shadow: var(--shadow); transform: translateY(-2px); }
.link-card .card h3 { margin-bottom: 0.25rem; }
.link-card .muted { font-size: 0.85rem; }