.section-intro { background: var(--dark); position: relative; }
.section-intro::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: linear-gradient(to bottom, var(--srb-red), var(--srb-blue), var(--srb-white)); }

.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.intro-text h2 { font-size: clamp(22px, 3vw, 32px); color: var(--white); margin-bottom: 20px; letter-spacing: 0.06em; }
.intro-text p  { font-size: 15px; color: var(--text2); font-weight: 300; margin-bottom: 16px; line-height: 1.7; }

.intro-alert {
  background: rgba(198,54,60,0.06); border: 1px solid rgba(198,54,60,0.25);
  padding: 28px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}
.alert-icon { font-size: 28px; margin-bottom: 12px; display: block; color: var(--srb-red); }
.intro-alert h3 { font-size: 13px; letter-spacing: 0.15em; color: var(--srb-red); margin-bottom: 16px; }
.intro-alert ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.intro-alert li {
  font-family: var(--font-mono); font-size: 12px; color: var(--text); letter-spacing: 0.05em;
  padding-left: 16px; position: relative;
}
.intro-alert li::before { content: '▸'; position: absolute; left: 0; color: var(--srb-red); }

.section-categories { background: var(--black); }

.category-block {
  background: var(--panel); border: 1px solid var(--border2);
  margin-bottom: 24px; overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}
.cat-header {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 28px; border-bottom: 1px solid var(--border2);
  background: var(--panel2);
}
.cat-icon { font-size: 20px; }
.cat-title { font-size: 15px; letter-spacing: 0.12em; color: var(--white); flex: 1; }
.cat-badge {
  font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.15em;
  padding: 4px 12px; border: 1px solid var(--border2); color: var(--text2);
}
.cat-badge.required { color: var(--srb-red); border-color: rgba(198,54,60,0.4); background: rgba(198,54,60,0.08); }

.equipment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; }
.eq-item {
  padding: 20px 28px; border-right: 1px solid var(--border2); border-bottom: 1px solid var(--border2);
  transition: background 0.2s;
}
.eq-item:nth-child(even) { border-right: none; }
.eq-item:nth-last-child(-n+2) { border-bottom: none; }
.eq-item:hover { background: rgba(255,255,255,0.02); }
.eq-name { font-size: 14px; font-weight: 600; color: var(--white); letter-spacing: 0.05em; margin-bottom: 6px; }
.eq-desc { font-size: 13px; color: var(--text2); font-weight: 300; line-height: 1.5; margin-bottom: 10px; }
.eq-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.eq-tags span { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.1em; padding: 2px 8px; border: 1px solid var(--border2); }
.tag-req { color: var(--srb-red); border-color: rgba(198,54,60,0.4); background: rgba(198,54,60,0.08); }
.tag-rec { color: #4a90d9; border-color: rgba(12,64,118,0.4); background: rgba(12,64,118,0.08); }
.tag-opt { color: var(--text2); }

.section-fps { background: var(--dark); }
.fps-table-wrap { overflow-x: auto; }
.fps-table {
  width: 100%; border-collapse: collapse;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.05em;
}
.fps-table th {
  text-align: left; padding: 14px 20px;
  background: var(--panel2); color: var(--text2);
  border-bottom: 1px solid var(--border2); font-size: 10px; letter-spacing: 0.15em;
  white-space: nowrap;
}
.fps-table td {
  padding: 14px 20px; border-bottom: 1px solid var(--border2);
  color: var(--text); transition: background 0.2s;
}
.fps-table tr:hover td { background: rgba(255,255,255,0.02); }
.fps-table tr:last-child td { border-bottom: none; }
.fps-val { font-weight: 700; font-size: 14px; }

@media (max-width: 900px) {
  .intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .equipment-grid { grid-template-columns: 1fr; }
  .eq-item { border-right: none; }
  .eq-item:nth-last-child(-n+2) { border-bottom: 1px solid var(--border2); }
  .eq-item:last-child { border-bottom: none; }
}
@media (max-width: 640px) {
  .cat-header { flex-wrap: wrap; }
}