:root {
  --primary-color: #4f46e5; /* indigo-600 */
  --secondary-color: #14b8a6; /* teal-500 */
  --background: #ffffff;
  --surface: #f8f9fa;
  --text-primary: #1a1a1a;
  --text-secondary: #6c757d;
  --border: #e9ecef;

  --font-heading: 'Inter','Segoe UI',system-ui,sans-serif;
  --font-body: 'Inter','Segoe UI',system-ui,sans-serif;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 32px;
  --space-xl: 64px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0b0f1a;
    --surface: #111827;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --border: #1f2937;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--background);
  line-height: 1.6;
}

h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-md);
}
h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 600;
  margin: 0 0 var(--space-md);
}
h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
}
p { margin: 0 0 var(--space-md); }
a { color: var(--primary-color); text-decoration: none; transition: color .2s ease; }
a:hover { text-decoration: underline; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 2px 10px rgba(0,0,0,.08);
  padding: var(--space-lg);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120px 80px at 12% 18%, rgba(79,70,229,.15), transparent 60%),
    radial-gradient(140px 90px at 88% 82%, rgba(20,184,166,.12), transparent 60%);
  opacity: .6;
  pointer-events: none;
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px; /* gradient stroke */
  background: linear-gradient(135deg, rgba(79,70,229,.35), rgba(20,184,166,.35));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,.16);
}
.card:hover::after { opacity: .7; }
.card h3 { color: var(--primary-color); letter-spacing: -0.01em; }
.card p { color: var(--text-secondary); }

/* декоративная стрелка при ховере */
.card span.card-arrow {
  position: absolute;
  right: 16px;
  bottom: 12px;
  font-size: 18px;
  color: var(--primary-color);
  opacity: 0;
  transform: translate(6px,6px);
  transition: all .3s ease;
}
.card:hover span.card-arrow { opacity: .9; transform: translate(0,0); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  transition: all .3s ease;
  border: 1px solid transparent;
}
.btn-primary { background: var(--primary-color); color: #fff; }
.btn-primary:hover { transform: scale(1.05); }
.btn-secondary { background: transparent; color: var(--primary-color); border-color: var(--primary-color); }
.btn-secondary:hover { transform: scale(1.05); }

/* Sections */
.hero { padding: var(--space-xl) 0; }
.hero .container { display: grid; grid-template-columns: 1.2fr .8fr; gap: var(--space-xl); align-items: center; }
.hero .subtitle { color: var(--text-secondary); max-width: 52ch; }
.hero .actions { display: flex; gap: var(--space-sm); margin-top: var(--space-md); }
.hero-visual { display: flex; justify-content: center; }
.hero-svg { width: 100%; height: auto; }

.features { padding: var(--space-xl) 0; }
.feature-card { padding: var(--space-lg); border-radius: 12px; background: var(--surface); border: 1px solid var(--border); }
.feature-card .icon { font-size: 28px; margin-bottom: var(--space-sm); }

.infographic { padding: var(--space-xl) 0; }
.infographic .infographic-container { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: var(--space-lg); }
.stats { margin-top: var(--space-lg); }
.stat { text-align: center; }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--primary-color); }
.stat-label { color: var(--text-secondary); }

.silos { padding: var(--space-xl) 0; }
.silo-card { text-decoration: none; color: inherit; }
.silo-card h3 { margin-bottom: var(--space-sm); }

.mini-game { padding: var(--space-xl) 0; }
.budget-game .sliders { display: grid; gap: var(--space-md); }
.budget-game label { display: flex; justify-content: space-between; color: var(--text-secondary); }
.budget-game input[type="range"] { width: 100%; }
.budget-game .result { margin-top: var(--space-md); }

.latest { padding: var(--space-xl) 0; }
.article-card { text-decoration: none; color: inherit; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Header/Footer host elements spacing */
site-header, site-footer { display: block; }