:root{
  --bg:#ffffff;
  --card:#f9f9fb;
  --accent:#2563eb; /* blue */
  --accent2:#f97316; /* orange */
  --text:#111;
  --muted:#555;
  --maxw:960px;
}
*{box-sizing:border-box}
body{font-family:Inter,system-ui,Arial,sans-serif; margin:0; color:var(--text); background:var(--bg); line-height:1.6}
.container{max-width:var(--maxw); margin:0 auto; padding:20px}
.flex{display:flex; align-items:center; gap:12px}
.logo{height:48px}
.site-header{background:linear-gradient(90deg,#fff,#fafafa); border-bottom:1px solid #eee}
.site-header h1{font-size:1.4rem; color:var(--accent)}
.card{background:var(--card); padding:24px; border-radius:16px; box-shadow:0 4px 12px rgba(0,0,0,0.05); margin:20px 0}
ul,ol{margin:0 0 12px 20px}
a{color:var(--accent); text-decoration:none}
a.cta{display:inline-block; margin-top:10px; padding:12px 18px; border-radius:8px; background:var(--accent); color:#fff; font-weight:bold}
a.cta:hover{background:var(--accent2)}
.site-footer{padding:24px 0; color:var(--muted); font-size:0.9rem; text-align:center; background:#fafafa; border-top:1px solid #eee}
@media(min-width:880px){
  .site-header h1{font-size:1.6rem}
  .container{padding:34px}
}