/* Brand AI Visibility - Clean Professional Style */
:root {
  --bg: #ffffff;
  --bg-soft: #f8f9fa;
  --primary: #2563eb;
  --primary-light: #dbeafe;
  --text: #1a1a2e;
  --text-dim: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --accent: #7c3aed;
  --green: #10b981;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Courier New', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  margin-bottom: 40px;
}

.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

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

nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  margin-left: 24px;
  transition: color 0.15s;
}

nav a:hover { color: var(--primary); }

/* Hero */
.hero {
  text-align: center;
  padding: 60px 0 40px;
}

.hero h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--text);
}

.hero .tagline {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s;
}

.hero-cta:hover { background: #1d4ed8; }

/* Stats */
.stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 40px 0;
}

.stat-item { text-align: center; }

.stat-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
}

.stat-label {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* Feature Grid */
.features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 40px 0;
}

.feature-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.2s;
}

.feature-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.06); }

.feature-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* Article List */
.section-title {
  font-size: 22px;
  font-weight: 700;
  margin: 48px 0 20px;
}

.article-list { list-style: none; }

.article-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.article-item:last-child { border-bottom: none; }

.article-item a {
  text-decoration: none;
  color: var(--text);
  font-size: 17px;
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
  transition: color 0.15s;
}

.article-item a:hover { color: var(--primary); }

.article-meta {
  font-size: 13px;
  color: var(--text-dim);
}

.article-meta .kd { 
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  margin-left: 8px;
}

/* Blog Content */
.blog-content { padding: 20px 0 60px; }

.blog-content h1 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 8px;
}

.blog-content .meta {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 32px;
}

.blog-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
}

.blog-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 12px;
}

.blog-content p, .blog-content li {
  font-size: 16px;
  margin-bottom: 16px;
  color: #334155;
}

.blog-content ul, .blog-content ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.blog-content .highlight-box {
  background: var(--bg-soft);
  border-left: 4px solid var(--primary);
  padding: 20px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
}

.blog-content .highlight-box p { margin-bottom: 0; }

.affiliate-link {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  margin: 8px 0;
  transition: background 0.15s;
}

.affiliate-link:hover { background: #1d4ed8; }

.affiliate-link.green { background: var(--green); }
.affiliate-link.green:hover { background: #059669; }
.affiliate-link.purple { background: var(--accent); }
.affiliate-link.purple:hover { background: #6d28d9; }

/* Tool Page */
.tool-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  max-width: 500px;
  margin: 40px auto;
  text-align: center;
}

.tool-card input, .tool-card textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  margin-bottom: 16px;
  font-family: inherit;
}

.tool-card textarea { min-height: 100px; resize: vertical; }

.tool-card button {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 12px 32px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.tool-card button:hover { background: #1d4ed8; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: 60px;
}

.footer-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
}

footer nav { margin-bottom: 12px; }

footer nav a {
  color: var(--text-dim);
  text-decoration: none;
  margin: 0 12px;
  font-size: 13px;
}

footer nav a:hover { color: var(--primary); }

/* Responsive */
@media (max-width: 640px) {
  .hero h1 { font-size: 26px; }
  .features { grid-template-columns: 1fr; }
  .stats { gap: 24px; }
  .stat-number { font-size: 22px; }
}