:root {
  --bg: #0f1420;
  --bg2: #131a2a;
  --card: #161c2c;
  --text: #f2f4f8;
  --muted: #9aa4b8;
  --accent: #ff8a3d;
  --accent2: #4fb8e8;
  --border: rgba(255,255,255,0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 900px; margin: 0 auto; padding: 0 24px; }
header.site {
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
.nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.logo { display: flex; align-items: center; }
.logo img { height: 42px; width: auto; display: block; }
.nav-links { display: flex; gap: 22px; flex-wrap: wrap; font-size: 0.95rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); text-decoration: none; }
main { max-width: 1100px; margin: 0 auto; padding: 40px 24px 60px; }
.hero {
  text-align: center;
  padding: 40px 0 20px;
}
.hero h1 { font-size: 2.3rem; margin-bottom: 12px; }
.hero p { color: var(--muted); font-size: 1.1rem; max-width: 640px; margin: 0 auto; }
.badge {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 14px;
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.cat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
}
.cat-card h3 { margin-top: 0; color: var(--accent2); font-size: 1.05rem; }
.cat-card ul { padding-left: 18px; margin: 10px 0 0; }
.cat-card li { margin-bottom: 8px; font-size: 0.95rem; }
article.post h1 { font-size: 1.9rem; margin-bottom: 6px; }
.meta { color: var(--muted); font-size: 0.85rem; margin-bottom: 28px; }
.quick-answer {
  background: var(--card);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 18px 20px;
  margin: 24px 0;
}
.quick-answer p { margin: 0; }
.pro-tips {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 32px 0;
}
.pro-tips h2 { margin-top: 0; font-size: 1.15rem; color: var(--accent); }
article.post h2 { margin-top: 34px; font-size: 1.35rem; }
article.post h3 { margin-top: 24px; font-size: 1.1rem; color: var(--accent2); }
table.spec { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 0.92rem; }
table.spec th, table.spec td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; }
table.spec th { background: var(--bg2); }
.related {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.related h2 { font-size: 1.1rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
footer.site {
  border-top: 1px solid var(--border);
  background: var(--bg2);
  padding: 32px 24px;
  color: var(--muted);
  font-size: 0.88rem;
}
.footer-wrap { max-width: 1100px; margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-links a { color: var(--muted); margin-right: 16px; }
.disclosure { max-width: 1100px; margin: 8px auto 0; font-size: 0.8rem; opacity: 0.8; }

/* Contact form */
.contact-form { max-width: 480px; margin-top: 24px; }
.contact-form .form-row { margin-bottom: 18px; display: flex; flex-direction: column; gap: 6px; }
.contact-form label { font-size: 0.9rem; color: var(--muted); }
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent2);
}
.contact-form textarea { resize: vertical; }
.contact-form .submit-btn {
  background: var(--accent);
  color: #1a1208;
  border: none;
  border-radius: 8px;
  padding: 12px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}
.contact-form .submit-btn:hover { opacity: 0.9; }
.hp-field { position: absolute; left: -9999px; }