:root {
  --bg: #0b1120;
  --card: #1e293b;
  --card-soft: rgba(255, 255, 255, 0.05);
  --text: #ffffff;
  --muted: #cbd5e1;
  --primary: #38bdf8;
  --secondary: #0ea5e9;
  --border: rgba(255, 255, 255, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  width: 460px;
  height: 460px;
  top: -100px;
  left: -100px;
  background: radial-gradient(circle, var(--primary), transparent);
  filter: blur(115px);
  opacity: 0.22;
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  width: 460px;
  height: 460px;
  right: -120px;
  bottom: -120px;
  background: radial-gradient(circle, var(--secondary), transparent);
  filter: blur(115px);
  opacity: 0.2;
  z-index: -2;
}

a {
  color: #7dd3fc;
  text-decoration: none;
}

a:hover {
  color: #bae6fd;
  text-decoration: underline;
}

.site-header {
  background: rgba(2, 6, 23, 0.72);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: #f8fafc;
}

.brand:hover {
  color: #ffffff;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

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

.nav-links a {
  color: #cbd5e1;
  font-weight: 600;
  padding: 6px 8px;
  border-radius: 8px;
}

.nav-links a.active,
.nav-links a:hover {
  background: rgba(56, 189, 248, 0.16);
  color: #f8fafc;
  text-decoration: none;
}

.page {
  max-width: 980px;
  margin: 20px auto;
  padding: 0 16px 36px;
}

.hero,
.card,
.notice,
.footer-card {
  background: var(--card-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
  padding: 22px;
  margin-bottom: 16px;
}

.hero h1 {
  margin: 0 0 10px;
  line-height: 1.25;
}

.hero p {
  margin: 0;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 1.2rem;
  color: #e0f2fe;
}

.card p,
.card li,
.notice p,
.card dd,
.card dt {
  color: var(--muted);
}

.meta-list,
.bullet-list {
  margin: 0;
  padding-left: 18px;
}

.meta-list li,
.bullet-list li {
  margin-bottom: 6px;
}

.kv {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 8px 12px;
  margin: 0;
}

.kv dt {
  font-weight: 700;
  color: #f8fafc;
}

.kv dd {
  margin: 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.btn:hover {
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.28);
}

.notice {
  border-left: 4px solid var(--primary);
}

.footer-card {
  font-size: 0.95rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

@media (max-width: 760px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .kv {
    grid-template-columns: 1fr;
  }

  .nav-wrap {
    align-items: flex-start;
    flex-direction: column;
  }
}