.title-with-help {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.title-with-help h1 { margin-bottom: 6px; }
.lesson-trigger {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  min-height: 34px;
  margin-bottom: 6px;
  padding: 0;
  border: 1px solid rgba(86, 200, 255, .45);
  border-radius: 99px;
  color: var(--cyan);
  background: rgba(86, 200, 255, .08);
  font: 700 1rem "JetBrains Mono", monospace;
  cursor: pointer;
}
.lesson-trigger:hover { border-color: var(--cyan); background: rgba(86, 200, 255, .14); }

.view-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--bg-2);
}
.view-button {
  min-width: 44px;
  min-height: 36px;
  padding: 4px 8px;
  border: 0;
  border-radius: 6px;
  color: var(--faint);
  background: transparent;
  font: 600 .65rem "JetBrains Mono", monospace;
  cursor: pointer;
}
.view-button:hover { color: var(--text); }
.view-button.active { color: #0d171c; background: var(--accent); }
#port-view[hidden], #pc-view[hidden] { display: none; }
#port-view { display: block; width: 100%; min-height: 440px; max-height: 590px; }
#port-view text { font-family: "JetBrains Mono", monospace; pointer-events: none; }
#port-view .port-group { transition: filter .18s ease; }
#port-view .port-group:hover { filter: brightness(1.2); }

.network-panel {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  box-shadow: var(--shadow);
}
.network-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  cursor: pointer;
  list-style: none;
}
.network-summary::-webkit-details-marker { display: none; }
.network-summary::after { color: var(--accent); content: "+"; font: 700 1.2rem "JetBrains Mono", monospace; }
.network-panel[open] .network-summary::after { content: "−"; }
.network-summary > span:first-child { display: grid; }
.network-summary .eyebrow { margin-bottom: 3px; }
.network-summary strong { color: var(--text); font-size: 1.08rem; }
.network-body { padding-top: 14px; border-top: 1px solid var(--line); margin-top: 14px; }
.network-total {
  flex: 0 0 auto;
  padding: 5px 8px;
  border: 1px solid rgba(101,230,196,.35);
  border-radius: 99px;
  color: var(--accent);
  font: 500 .66rem "JetBrains Mono", monospace;
}
.network-intro {
  margin: 8px 0 16px;
  color: var(--muted);
  font-size: .82rem;
}
.network-options { display: grid; gap: 16px; }
.network-group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 7px;
  color: #e7f2f6;
  font-size: .8rem;
}
.network-group-title span {
  color: var(--faint);
  font: 500 .65rem "JetBrains Mono", monospace;
}
.network-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 8px;
}
.network-card {
  position: relative;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--bg-2);
}
.network-card.selected {
  border-color: var(--accent);
  background: #203b47;
}
.network-card.blocked { opacity: .84; border-color: rgba(255,107,122,.5); }
.network-select {
  display: block;
  min-height: 44px;
  width: 100%;
  padding: 0 25px 0 0;
  border: 0;
  color: inherit;
  background: transparent;
  text-align: left;
  cursor: pointer;
}
.network-card.blocked .network-select { cursor: not-allowed; }
.network-select strong {
  display: block;
  overflow: hidden;
  font-size: .78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.network-select small { display: block; margin-top: 3px; color: var(--muted); font-size: .67rem; }
.network-price { color: var(--accent); font: 500 .65rem "JetBrains Mono", monospace; }
.network-info {
  position: absolute;
  top: 7px;
  right: 7px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--line-bright);
  border-radius: 50%;
  color: var(--cyan);
  background: var(--bg-2);
  font: 700 .7rem "JetBrains Mono", monospace;
  cursor: pointer;
}
.network-reason { margin-top: 5px; color: #ffc0c7; font-size: .65rem; }
.network-diagnostics {
  display: grid;
  gap: 6px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.network-note {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 7px;
  color: var(--muted);
  font-size: .7rem;
}
.network-note b { color: var(--cyan); text-align: center; }
.network-note.warning b { color: var(--warning); }
.network-note.success b { color: var(--success); }

.lesson-dialog {
  width: min(760px, calc(100vw - 28px));
  max-height: min(820px, calc(100vh - 28px));
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line-bright);
  border-radius: 15px;
  color: var(--text);
  background: var(--panel-solid);
  box-shadow: 0 28px 90px rgba(0,0,0,.7);
}
.lesson-dialog::backdrop { background: rgba(2,7,13,.76); backdrop-filter: blur(4px); }
.dialog-shell { display: flex; flex-direction: column; max-height: min(820px, calc(100vh - 28px)); }
.dialog-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 22px 14px;
  border-bottom: 1px solid var(--line);
}
.dialog-heading h2 { font-size: 1.25rem; }
.dialog-close,
.compatibility-dialog-close {
  display: grid;
  place-items: center;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: rgba(255,255,255,.04);
  cursor: pointer;
}
.dialog-heading .dialog-close,
.dialog-heading .compatibility-dialog-close { font-size: 1.35rem; line-height: 1; }
.lesson-content {
  overflow-y: auto;
  padding: 20px 22px;
}
.lesson-lead {
  margin-bottom: 18px;
  padding: 12px 14px;
  border-left: 3px solid var(--accent);
  border-radius: 5px 9px 9px 5px;
  color: #d9e7f6;
  background: rgba(101,230,196,.07);
}
.lesson-product {
  margin-bottom: 16px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--muted);
  background: var(--bg-2);
  font-size: .82rem;
}
.lesson-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 12px;
}
.lesson-section {
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-2);
}
.lesson-section h3 {
  margin: 0 0 8px;
  color: var(--cyan);
  font-size: .82rem;
}
.lesson-section.safety h3 { color: var(--warning); }
.lesson-section ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: .78rem; }
.lesson-section li + li { margin-top: 5px; }
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  padding: 12px 22px 18px;
  border-top: 1px solid var(--line);
}
.dialog-actions .dialog-close,
.dialog-actions .compatibility-dialog-close { width: auto; padding-inline: 18px; }
.compatibility-intro {
  margin: 18px 22px 0;
  padding: 12px 14px;
  border-left: 3px solid var(--warning);
  border-radius: 5px 9px 9px 5px;
  color: #e8eef7;
  background: rgba(255,200,87,.08);
  font-size: .82rem;
}
.compatibility-content { display: grid; gap: 14px; }
.compatibility-issue {
  padding: 15px;
  border: 1px solid rgba(255,107,122,.42);
  border-radius: 10px;
  background: rgba(61,18,29,.22);
}
.compatibility-issue h3 { margin: 0 0 12px; color: #ffc0c7; font-size: .94rem; }
.compatibility-issue dl { display: grid; gap: 10px; margin: 0; }
.compatibility-issue dl > div {
  display: grid;
  grid-template-columns: minmax(95px, .28fr) 1fr;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.compatibility-issue dt { color: var(--cyan); font: 700 .68rem "JetBrains Mono", monospace; text-transform: uppercase; }
.compatibility-issue dd { margin: 0; color: var(--muted); font-size: .78rem; line-height: 1.55; }

@media (max-width: 820px) {
  .network-panel { width: 100%; padding: 16px 14px; }
  .network-card-grid, .lesson-grid { grid-template-columns: 1fr; }
  #port-view { min-height: 390px; }
}
@media (max-width: 480px) {
  .compatibility-issue dl > div { grid-template-columns: 1fr; gap: 4px; }
  .header-actions #safety-button { display: none; }
  .view-button { padding-inline: 6px; }
}
.component-card.legacy-card {
  border-style: dashed;
  background: linear-gradient(150deg, rgba(48,45,66,.78), rgba(20,28,45,.86));
}
.component-card.legacy-card.selected {
  border-style: solid;
  border-color: var(--accent);
}
.generation-badge {
  display: inline-block;
  margin-top: 5px;
  padding: 2px 6px;
  border: 1px solid rgba(255,200,87,.45);
  border-radius: 99px;
  color: var(--warning);
  background: rgba(255,200,87,.08);
  font: 600 .59rem "JetBrains Mono", monospace;
  letter-spacing: .02em;
  white-space: nowrap;
}
.generation-badge.generation-2 {
  border-color: rgba(180,157,225,.45);
  color: #c9b5ef;
  background: rgba(180,157,225,.08);
}
.network-card .generation-badge { margin: 3px 0 1px; }