:root {
  --bg: #0b1020;
  --bg-soft: #111831;
  --card: #161f3f;
  --text: #eaf0ff;
  --muted: #b7c2e6;
  --accent: #5ea0ff;
  --accent-2: #6ee7d8;
  --border: #26325f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: radial-gradient(circle at top right, #18224a, var(--bg));
  color: var(--text);
  line-height: 1.6;
}

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

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(6px);
  background: rgba(11, 16, 32, 0.9);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 72px;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.4px;
}

.logo span {
  color: var(--accent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.nav a {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
  transition: background 0.2s, color 0.2s;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  background: var(--bg-soft);
}

main {
  padding: 48px 0 64px;
}

.hero {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  margin-bottom: 40px;
}

.hero h1 {
  font-size: clamp(1.9rem, 3.4vw, 3rem);
  margin: 0 0 12px;
  line-height: 1.2;
}

.lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 20px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-block;
  padding: 11px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #7fb2ff);
  color: #071126;
}

.btn-secondary {
  border-color: var(--border);
  color: var(--text);
}

.card {
  background: linear-gradient(180deg, #162143, var(--card));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

h2 {
  margin-top: 0;
  font-size: 1.6rem;
}

h3 {
  margin-top: 0;
}

.section {
  margin-top: 32px;
}

ul {
  margin: 0;
  padding-left: 18px;
}

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

.kpi .card {
  min-width: 170px;
  flex: 1;
}

.kpi strong {
  display: block;
  font-size: 1.65rem;
  color: var(--accent-2);
}

details {
  background: #121c3a;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

details + details {
  margin-top: 10px;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

form {
  display: grid;
  gap: 12px;
}

label {
  font-size: 0.95rem;
}

input,
textarea {
  width: 100%;
  margin-top: 6px;
  background: #0d1531;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.tag {
  display: inline-block;
  border: 1px solid var(--border);
  background: #121a35;
  border-radius: 999px;
  padding: 6px 12px;
  color: var(--muted);
  font-size: 0.85rem;
}