:root {
  --bg: #0f1b2d;
  --bg2: #162641;
  --card: #1c2f4a;
  --text: #eef3f8;
  --muted: #9db0c7;
  --accent: #2eae6b;
  --line: rgba(255, 255, 255, 0.08);
  --max: 720px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1200px 600px at 20% -10%, #1a4f7c 0%, transparent 55%),
              radial-gradient(900px 500px at 100% 0%, #145239 0%, transparent 45%),
              var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  line-height: 1.65;
  min-height: 100%;
}

a { color: #7ec8ff; text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 20px 64px;
}

header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

header img {
  width: 56px;
  height: 56px;
  border-radius: 14px;
}

header .brand {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin: 0 0 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.hero {
  background: linear-gradient(160deg, var(--card), var(--bg2));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 24px;
  margin-bottom: 22px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 2rem;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.card {
  background: rgba(28, 47, 74, 0.72);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.card p, .card li {
  color: var(--muted);
  margin: 0 0 8px;
}

.card ul {
  margin: 8px 0 0;
  padding-left: 1.15rem;
}

.badge {
  display: inline-block;
  margin-top: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(46, 174, 107, 0.15);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.download-block {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.btn-download {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 12px;
  background: linear-gradient(135deg, #2eae6b, #248f58);
  color: #fff !important;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none !important;
  box-shadow: 0 8px 24px rgba(46, 174, 107, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-download:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(46, 174, 107, 0.45);
  text-decoration: none !important;
}

.download-note,
.download-hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.download-hint { font-size: 0.82rem; opacity: 0.9; }

article h1 {
  margin: 0 0 6px;
  font-size: 1.9rem;
  letter-spacing: -0.03em;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 22px;
}

article h2 {
  margin: 26px 0 8px;
  font-size: 1.2rem;
}

article p, article li {
  color: var(--muted);
}

footer {
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

footer p { margin: 0 0 8px; }

.footer-keywords {
  font-size: 0.78rem;
  opacity: 0.75;
  line-height: 1.5;
}

.faq { margin: 8px 0 0; }

.faq dt {
  color: var(--text);
  font-weight: 600;
  margin-top: 14px;
}

.faq dt:first-child { margin-top: 0; }

.faq dd {
  color: var(--muted);
  margin: 4px 0 0;
  padding-left: 0;
}