.operator-guide { max-width: 1260px; margin: 0 auto; }
.handbook-header { align-items: flex-start; }
.handbook-header h1 { margin: 0; }
.handbook-header .page-description { margin-bottom: 0; max-width: 620px; line-height: 1.7; }
.handbook-edition { color: var(--text-3); white-space: nowrap; font-size: 11px; padding-top: 7px; }
.handbook-search { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border: 1px solid var(--border-strong); border-radius: 12px; background: var(--bg-1); margin-bottom: 16px; }
.handbook-search > svg { color: var(--brand); }
.handbook-search input { flex: 1; min-width: 0; border: 0; box-shadow: none; background: transparent; padding: 7px 0; font-size: 14px; }
.handbook-search:focus-within { border-color: var(--brand); box-shadow: var(--focus-ring); }
.handbook-shortcuts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-bottom: 26px; }
.handbook-shortcuts button { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 13px 14px; background: var(--brand-bg); border: 1px solid var(--brand-border); border-radius: 9px; color: var(--brand); font-size: 12px; text-align: left; }
.handbook-shortcuts button:hover { border-color: var(--brand); }
.handbook-layout { display: grid; grid-template-columns: 224px minmax(0, 1fr); align-items: start; gap: 28px; }
.handbook-nav { position: sticky; top: 0; display: flex; flex-direction: column; gap: 3px; max-height: calc(100dvh - 72px); overflow: auto; padding-right: 8px; }
.handbook-nav-label { color: var(--text-3); text-transform: uppercase; letter-spacing: .7px; font-size: 10px; padding: 7px 10px 10px; }
.handbook-nav button { min-height: 35px; padding: 8px 10px; border-radius: 7px; text-align: left; line-height: 1.4; font-size: 12px; background: transparent; color: var(--text-2); }
.handbook-nav button:hover { background: var(--bg-3); color: var(--text-0); }
.handbook-nav button[aria-pressed="true"] { background: var(--brand-bg); color: var(--brand); box-shadow: inset 3px 0 var(--brand); font-weight: 600; }
.handbook-content { min-width: 0; overflow-wrap: anywhere; }
.handbook-topic-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.handbook-topic-heading h2 { color: var(--text-0); margin: 0 0 8px; font-size: 24px; font-weight: 650; letter-spacing: -.6px; }
.handbook-topic-heading p { margin: 0; font-size: 13px; line-height: 1.8; color: var(--text-2); }
.handbook-topic-heading > .btn { flex-shrink: 0; margin-top: 2px; }
.handbook-requirements { padding: 16px 18px; margin-bottom: 18px; border-radius: 10px; background: var(--bg-3); font-size: 12px; line-height: 1.75; color: var(--text-2); }
.handbook-requirements strong { color: var(--text-0); font-size: 12px; }
.handbook-requirements ul { margin: 8px 0 0; padding-left: 18px; }
.handbook-requirements li + li { margin-top: 5px; }
.handbook-workflow { border: 1px solid var(--border); border-radius: 12px; background: var(--bg-1); margin-bottom: 12px; }
.handbook-workflow > summary { display: flex; align-items: center; gap: 11px; cursor: pointer; list-style: none; padding: 17px 18px; color: var(--text-0); font-weight: 600; line-height: 1.55; }
.handbook-workflow > summary::-webkit-details-marker { display: none; }
.handbook-workflow > summary:focus-visible, .handbook-problems summary:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 8px; }
.handbook-step-number { flex-shrink: 0; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 8px; background: var(--brand-bg); color: var(--brand); font-size: 11px; }
.handbook-disclosure { color: var(--text-3); margin-left: auto; }
.handbook-workflow[open] .handbook-disclosure { transform: rotate(180deg); }
.handbook-workflow-body { padding: 0 20px 20px; font-size: 13px; line-height: 1.85; }
.handbook-workflow ol { padding-left: 22px; margin: 0 0 18px; }
.handbook-workflow li { padding-left: 5px; margin-bottom: 10px; }
.handbook-workflow li::marker { color: var(--brand); font-weight: 600; }
.handbook-result { border-left: 3px solid var(--green); background: var(--green-bg); color: var(--text-1); padding: 12px 15px; border-radius: 0 8px 8px 0; }
.handbook-result strong { color: var(--green); font-size: 11px; }
.handbook-result p { margin: 3px 0 0; }
.handbook-note { color: var(--text-2); padding: 12px 0 0; margin: 12px 0 0; border-top: 1px solid var(--border); font-size: 12px; }
.handbook-problems { margin: 26px 0; }
.handbook-problems h3 { font-size: 16px; color: var(--text-0); }
.handbook-problems details { border-bottom: 1px solid var(--border); padding: 12px 0; font-size: 12px; }
.handbook-problems summary { cursor: pointer; font-weight: 600; color: var(--text-1); line-height: 1.7; }
.handbook-problems p { color: var(--text-2); line-height: 1.85; margin: 10px 0 0; }
.handbook-related { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 24px 0; }
.handbook-related > span { font-size: 11px; color: var(--text-3); margin-right: 4px; }
.handbook-empty h2 { margin-top: 0; font-size: 20px; }
.handbook-empty p { color: var(--text-3); line-height: 1.8; }
@media (max-width: 1100px) {
  .handbook-layout { grid-template-columns: 180px minmax(0, 1fr); gap: 18px; }
  .handbook-shortcuts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .handbook-topic-heading { flex-wrap: wrap; }
}
@media (max-width: 768px) {
  .handbook-header { gap: 4px; }
  .handbook-edition { font-size: 10px; }
  .handbook-search { padding: 6px 10px; }
  .handbook-search input { font-size: 16px; }
  .handbook-search > .btn { font-size: 10px; padding: 6px; }
  .handbook-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .handbook-nav { position: static; max-height: 190px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; padding-right: 0; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
  .handbook-nav-label { grid-column: 1 / -1; padding: 2px 6px 6px; }
  .handbook-nav button { min-height: 42px; font-size: 11px; }
  .handbook-shortcuts { margin-bottom: 18px; }
  .handbook-shortcuts button { min-height: 48px; padding: 10px; font-size: 11px; }
  .handbook-topic-heading h2 { font-size: 22px; }
  .handbook-workflow > summary { padding: 14px; font-size: 12px; }
  .handbook-workflow-body { padding: 0 15px 16px; font-size: 13px; }
  .handbook-requirements { padding: 14px; }
}