:root{
  --bg:#f4f6fb;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --accent:#2563eb;
  --border:#e5e7eb;
  --radius-xl:22px;
  --radius-lg:16px;
  --shadow-lg:0 30px 80px rgba(0,0,0,.12);
  --shadow-md:0 14px 40px rgba(0,0,0,.08);
}

*{box-sizing:border-box}

body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
}

.container{
  max-width:1200px;
  margin:auto;
  padding:56px 20px;
}

/* ---------- HERO ---------- */
.hero{
  background:linear-gradient(180deg,#ffffff,#eef3ff);
  border-radius:var(--radius-xl);
  padding:56px 64px;
  box-shadow:var(--shadow-lg);
}

.hero h1{
  font-size:42px;
  margin:0 0 14px;
  letter-spacing:-0.02em;
}

.hero p{
  max-width:720px;
  color:var(--muted);
  font-size:18px;
}

/* ---------- LAYOUT ---------- */
.article{
  display:grid;
  grid-template-columns:2.2fr 1fr;
  gap:48px;
  margin-top:56px;
}

/* ---------- CONTENT CARD ---------- */
.card{
  background:var(--card);
  border-radius:var(--radius-lg);
  padding:40px;
  box-shadow:var(--shadow-md);
}

.card + .card{margin-top:42px}

.card h2{
  font-size:26px;
  margin-bottom:14px;
  letter-spacing:-0.01em;
}

.card h3{
  font-size:18px;
  margin-top:22px;
}

.card p{
  color:#374151;
  max-width:720px;
}

.card img{
  width:100%;
  height:auto;
  border-radius:14px;
  margin:22px 0 28px;
}

/* ---------- LIST ---------- */
ul{
  padding-left:20px;
}

li{
  margin-bottom:8px;
}

/* ---------- FAQ ---------- */
.faq-item + .faq-item{
  border-top:1px solid var(--border);
  padding-top:18px;
  margin-top:18px;
}

/* ---------- SIDEBAR ---------- */
aside .card{
  padding:32px;
}

aside h2{
  font-size:20px;
}

/* ---------- LINKS ---------- */
a{
  color:var(--accent);
  text-decoration:none;
  font-weight:500;
}

a:hover{
  text-decoration:underline;
}

/* ---------- RESPONSIVE ---------- */
@media(max-width:980px){
  .article{
    grid-template-columns:1fr;
  }
  .hero{
    padding:40px 28px;
  }
  .hero h1{
    font-size:34px;
  }
}