* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Arial, sans-serif;
}

body {
  background: #f4f6f8;
  color: #333;
}

.container {
  display: flex;
  max-width: 1100px;
  margin: 30px auto;
  background: #fff;
  box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

/* SIDEBAR */
.sidebar {
  width: 30%;
  background: #1f2937;
  color: #fff;
  padding: 30px;
}

.sidebar h1 {
  font-size: 26px;
  margin-bottom: 5px;
}

.subtitle {
  font-size: 14px;
  color: #cbd5e1;
  margin-bottom: 20px;
}

.sidebar h3 {
  margin-top: 25px;
  font-size: 16px;
  border-bottom: 1px solid #374151;
  padding-bottom: 5px;
}

.sidebar p, .sidebar li {
  font-size: 14px;
  margin-top: 8px;
}

.sidebar ul {
  list-style: square;
  margin-left: 18px;
}

/* CONTENT */
.content {
  width: 70%;
  padding: 35px;
}

.content section {
  margin-bottom: 30px;
}

.content h2 {
  font-size: 20px;
  color: #1f2937;
  border-bottom: 2px solid #e5e7eb;
  margin-bottom: 15px;
  padding-bottom: 5px;
}

.item {
  margin-bottom: 15px;
}

.item h4 {
  font-size: 16px;
  color: #111827;
}

.item span {
  font-size: 13px;
  color: #6b7280;
}

.item p {
  font-size: 14px;
  margin-top: 5px;
  line-height: 1.6;
}

ul li {
  font-size: 14px;
  margin-bottom: 6px;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .container {
    flex-direction: column;
  }

  .sidebar, .content {
    width: 100%;
  }
}