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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  max-width: 960px;
  margin: 0 auto;
  padding: 0;
  line-height: 1.7;
  background: #f5f5f7;
  color: #2c2c2c;
}

/* ── Navigation ── */
nav {
  background: #d86b86;
  padding: 16px 30px;
  display: flex;
  gap: 24px;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(216, 107, 134, 0.3);
}

nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.2s, transform 0.15s;
}

nav a:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

nav a.active {
  background: rgba(255, 255, 255, 0.25);
}

/* ── Main card ── */
.card {
  background: #fff;
  padding: 40px 48px;
  margin: 30px;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

/* ── Typography ── */
h1 {
  color: #d86b86;
  font-size: 2rem;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.card > p:first-of-type {
  color: #888;
  font-size: 0.9rem;
  margin-bottom: 28px;
}

h2 {
  color: #333;
  font-size: 1.25rem;
  margin-top: 32px;
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid #fce4ec;
}

h3 {
  color: #555;
  font-size: 1.05rem;
  margin-top: 20px;
  margin-bottom: 8px;
}

p {
  margin-bottom: 14px;
}

ul, ol {
  margin: 10px 0 18px 24px;
}

li {
  margin-bottom: 8px;
}

strong {
  color: #c2185b;
}

a {
  color: #d86b86;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

a:hover {
  border-bottom-color: #d86b86;
}

/* ── Tables ── */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 0.92rem;
}

thead th {
  background: #fce4ec;
  color: #c2185b;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
}

tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid #f0f0f0;
}

tbody tr:hover {
  background: #fdf2f5;
}

/* ── FAQ ── */
.faq-item {
  margin-bottom: 16px;
  border: 1px solid #f0f0f0;
  border-radius: 10px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: #fdf2f5;
  border: none;
  padding: 16px 20px;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: #333;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
}

.faq-question:hover {
  background: #fce4ec;
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: #d86b86;
  font-weight: 300;
  transition: transform 0.2s;
}

.faq-item.open .faq-question::after {
  content: '−';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 20px;
  background: #fff;
  color: #555;
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 16px 20px;
}

/* ── Highlight box ── */
.highlight {
  background: #fff3e0;
  border-left: 4px solid #ff9800;
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin: 16px 0;
  font-size: 0.93rem;
}

.highlight.info {
  background: #e3f2fd;
  border-left-color: #2196f3;
}

.highlight.danger {
  background: #fce4ec;
  border-left-color: #e91e63;
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 30px;
  font-size: 0.85rem;
  color: #999;
  border-top: 1px solid #eee;
  margin-top: 10px;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  nav {
    flex-wrap: wrap;
    gap: 8px;
    padding: 14px 16px;
  }

  nav a {
    font-size: 0.85rem;
    padding: 5px 10px;
  }

  .card {
    margin: 16px;
    padding: 24px 20px;
    border-radius: 12px;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.1rem;
  }

  table {
    font-size: 0.82rem;
  }

  thead th, tbody td {
    padding: 8px 10px;
  }
}