:root {
  --brand: #1aa3a3;
  --accent: #0f766e;
  --text: #0f172a;
  --muted: #334155;
  --bg: #ffffff;
  --lightbg: #f8fafc;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.65;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 1rem; }
header.container {
  display: flex; justify-content: space-between; align-items: center; padding: 1rem 1rem; border-bottom: 1px solid #e5e7eb;
  position: sticky; top: 0; background: rgba(255,255,255,.9); backdrop-filter: blur(6px); z-index: 50;
}
.brand {
  display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--text); font-weight: 700; letter-spacing:.3px;
}
header nav a { margin-left: 1rem; text-decoration: none; color: var(--text); font-weight: 500; }
header nav a:hover { color: var(--accent); }
.content h1, .content h2, .content h3 { line-height: 1.2; color: var(--text); }
.hero {
  display:grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items:center; padding: 2.5rem 0;
}
.hero .badge { display:inline-block; background: var(--lightbg); color: var(--accent); padding:.35rem .7rem; border-radius:999px; font-size:.85rem; font-weight:600; }
.cta { display:inline-block; padding:.9rem 1.1rem; border-radius:.75rem; background: var(--brand); color: white; text-decoration: none; font-weight: 700; }
.cta.secondary { background: transparent; color: var(--accent); border: 2px solid var(--accent); }
.grid-3 { display:grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.card { background: white; border:1px solid #eef2f7; border-radius: 1rem; padding: 1rem; box-shadow: 0 4px 14px rgba(2,6,23,.04); }
.card img { width:100%; height:auto; border-radius: .75rem; }
blockquote.tip { border-left: 4px solid var(--brand); margin: 1rem 0; padding: .5rem 1rem; background: var(--lightbg); }
section {
  margin: 2rem 0;
}
.kicker { text-transform: uppercase; letter-spacing:.1em; color: var(--muted); font-size:.8rem; }
.proscons { display:grid; grid-template-columns:1fr 1fr; gap: 1rem; }
.proscons ul { margin: 0; padding-left: 1.2rem; }
.footer { margin-top: 3rem; background: var(--lightbg); padding: 2rem 0; border-top: 1px solid #e5e7eb; }
.footer-grid { display:grid; grid-template-columns: 2fr 1fr 1fr; gap: 1rem; }
.footer a { color: var(--text); text-decoration: none; }
.footer a:hover { color: var(--accent); }
.brand-inline { display:flex; align-items:center; gap:.5rem; }
.meta { color: var(--muted); font-size:.95rem; }
.breadcrumbs { font-size:.9rem; margin-bottom: .5rem; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--accent); }
.hero-img { border-radius: 1rem; border:1px solid #e5e7eb; }
.responsive-img { width:100%; height:auto; border-radius: .75rem; border:1px solid #e5e7eb; }
hr.sep { border:0; border-top:1px dashed #e2e8f0; margin:1.5rem 0; }
.adslot { margin: 1rem 0; padding: .5rem; border: 1px dashed #cbd5e1; border-radius: .5rem; text-align: center; font-size: .9rem; color: #475569; }
table { width:100%; border-collapse: collapse; }
td, th { border:1px solid #e5e7eb; padding:.6rem; text-align:left; }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  header nav a { margin-left: .6rem; }
  .footer-grid { grid-template-columns: 1fr; }
}