:root {
  color-scheme: dark;
  --bg: #0a0a0a;
  --surface: #131313;
  --surface-2: #1c1c1c;
  --text: #f6f3ef;
  --muted: #b9b2ab;
  --accent: #b44a1f;
  --accent-light: #e17b43;
  --line: rgba(255, 255, 255, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Arial, sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
.seo-shell { min-height: 100vh; }
.seo-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(19,19,19,.94); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.seo-nav {
  max-width: 1160px; margin: auto; min-height: 76px; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.seo-brand { color: var(--accent-light); text-decoration: none; letter-spacing: .12em; font-size: 1.35rem; font-weight: 700; white-space: nowrap; }
.seo-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; font-size: .83rem; text-transform: uppercase; letter-spacing: .08em; }
.seo-links a { color: var(--muted); text-decoration: none; }
.seo-links a:hover, .seo-links a:focus { color: var(--accent-light); }
.seo-main { max-width: 1000px; margin: auto; padding: 80px 24px 96px; }
.seo-kicker { color: var(--accent-light); letter-spacing: .16em; text-transform: uppercase; font-size: .76rem; font-weight: 700; }
h1, h2, h3 { font-family: Georgia, serif; font-weight: 400; line-height: 1.15; }
h1 { font-size: clamp(2.5rem, 7vw, 5rem); margin: 12px 0 20px; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin: 48px 0 18px; }
h3 { font-size: 1.45rem; margin: 0 0 10px; }
.seo-intro { max-width: 720px; color: var(--muted); font-size: 1.1rem; }
.seo-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 32px; }
.seo-card { background: var(--surface); border: 1px solid var(--line); padding: 26px; }
.seo-card p, .seo-card li { color: var(--muted); }
.seo-card a { color: var(--accent-light); }
.seo-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  margin-top: 22px; padding: 13px 22px; background: var(--accent); color: white;
  border: 0; border-radius: 3px; text-decoration: none; font-weight: 700; cursor: pointer;
}
.seo-button:hover { background: var(--accent-light); }
.seo-form { display: grid; gap: 16px; max-width: 720px; margin-top: 28px; }
.seo-form label { display: grid; gap: 7px; color: var(--muted); font-size: .92rem; }
.seo-form input, .seo-form select, .seo-form textarea {
  width: 100%; padding: 13px 14px; background: var(--surface-2); color: var(--text);
  border: 1px solid var(--line); border-radius: 3px; font: inherit;
}
.seo-form textarea { min-height: 120px; resize: vertical; }
.seo-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.seo-breadcrumb { color: var(--muted); font-size: .88rem; margin-bottom: 30px; }
.seo-breadcrumb a { color: var(--accent-light); text-decoration: none; }
.seo-footer { border-top: 1px solid var(--line); color: var(--muted); padding: 28px 24px; text-align: center; font-size: .86rem; }
.seo-footer a { color: var(--accent-light); text-decoration: none; }
.article-meta { color: var(--muted); font-size: .9rem; }
.article-content { max-width: 760px; }
.article-content p, .article-content li { color: var(--muted); font-size: 1.05rem; }
.article-content li { margin: 8px 0; }
@media (max-width: 720px) {
  .seo-nav { align-items: flex-start; flex-direction: column; padding: 18px 20px; }
  .seo-links { justify-content: flex-start; gap: 10px 14px; }
  .seo-main { padding: 54px 20px 72px; }
  .seo-grid, .seo-form .form-row { grid-template-columns: 1fr; }
}