.kb-top { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; flex-wrap: wrap; padding-top: 28px; }
.kb-top h1 { margin-bottom: 8px; }
.search { margin: 8px 0 18px; }
.nums { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.num { display: block; text-align: left; text-decoration: none; color: var(--text); border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 14px 16px; font: inherit; cursor: pointer; width: 100%; min-height: 84px; }
.num:hover { border-color: var(--blue2); color: #fff; }
.num b { font-family: var(--f-head); color: var(--blue2); font-size: 22px; display: block; line-height: 1.1; }
.num span { font-weight: 600; font-size: 15px; line-height: 1.35; display: block; margin-top: 4px; }
.num small { color: var(--muted); font-size: 13px; }
.num.empty { opacity: .55; }
.num.essay { grid-column: 1 / -1; border-color: var(--blue); background: rgba(29, 75, 255, .18); box-shadow: 0 0 26px rgba(29, 75, 255, .3); }
.num.essay b { color: #fff; }
.crumbs { font-size: 15px; margin: 4px 0 14px; }
.crumbs a, .crumbs button { color: var(--sky); background: none; border: 0; font: inherit; cursor: pointer; padding: 6px 2px; text-decoration: underline; }
.micros { display: grid; gap: 10px; }
.micro-link { display: block; text-decoration: none; color: var(--text); border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 14px 16px; }
.micro-link:hover { border-color: var(--blue2); color: #fff; }
.micro-link b { font-weight: 800; display: block; }
.micro-link small { color: var(--muted); }
.micro-link.hasnum small:first-child { color: var(--sky); }
.lead-note { color: var(--muted); font-size: 16px; }
.mc h2 { margin-top: 4px; }
.illus { border: 1px solid var(--line); border-radius: 10px; background: rgba(10, 14, 30, .6); padding: 10px; margin: 0 0 14px; text-align: center; }
.illus svg { max-width: 100%; height: auto; max-height: 280px; }
.tasks { counter-reset: t; list-style: none; padding: 0; margin: 0; }
.tasks > li { counter-increment: t; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px 12px 46px; margin-bottom: 10px; position: relative; background: var(--card); }
.tasks > li::before { content: counter(t); position: absolute; left: 12px; top: 12px; width: 24px; height: 24px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 800; font-size: 13px; display: flex; align-items: center; justify-content: center; }
.tasks .ttext { white-space: pre-line; }
.tasks .opts { margin: 6px 0 0; padding-left: 1.3em; color: var(--sky); }
.tans { margin-top: 10px; padding: 10px 12px; border-radius: 8px; background: rgba(29, 75, 255, .15); border: 1px solid var(--blue2); font-size: 16px; }
.tans b.k { color: var(--sky); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; }
.pager { display: flex; justify-content: space-between; gap: 10px; margin: 22px 0; flex-wrap: wrap; }
.seg { margin: 26px 0 10px; }
@media (max-width: 520px) { .nums { grid-template-columns: 1fr 1fr; } .num { padding: 12px; } .tasks > li { padding-left: 42px; } }

.kb-grid { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 22px; align-items: start; }
.side-wrap > summary { display: none; }
.side { position: sticky; top: 12px; max-height: calc(100vh - 24px); overflow: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--card); padding: 8px; }
.side-all { display: block; padding: 8px 10px; color: var(--sky); text-decoration: none; font-weight: 700; font-size: 14px; }
.side-n { border-top: 1px solid var(--line); }
.side-h { display: flex; gap: 8px; align-items: baseline; padding: 9px 10px; color: var(--text); text-decoration: none; font-size: 14px; line-height: 1.3; border-radius: 8px; }
.side-h b { font-family: var(--f-head); color: var(--blue2); font-size: 13px; flex: none; min-width: 34px; }
.side-h:hover { background: rgba(111, 141, 255, .12); }
.side-n.open > .side-h { background: rgba(29, 75, 255, .22); color: #fff; font-weight: 700; }
.side-m { padding: 4px 0 8px 14px; margin-left: 12px; border-left: 2px solid var(--blue); }
.side-m a { display: block; padding: 7px 10px; color: var(--muted); text-decoration: none; font-size: 14px; line-height: 1.3; border-radius: 6px; }
.side-m a:hover { color: #fff; }
.side-m a.on { background: var(--blue); color: #fff; font-weight: 700; }
.tabs { display: flex; gap: 6px; margin: 14px 0 16px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: #000; z-index: 5; padding-top: 6px; }
.tabbtn { padding: 11px 16px; text-decoration: none; color: var(--muted); font-weight: 800; border-radius: 8px 8px 0 0; border: 1px solid transparent; border-bottom: 0; font-size: 16px; }
.tabbtn:hover { color: #fff; }
.tabbtn.on { background: var(--blue); color: #fff; }
.kb-main { min-width: 0; }
@media (max-width: 820px) {
  .kb-grid { grid-template-columns: 1fr; gap: 12px; }
  .side-wrap > summary { display: block; cursor: pointer; padding: 12px 14px; border: 1px solid var(--blue2); border-radius: 10px; font-weight: 800; color: #fff; background: rgba(29, 75, 255, .18); }
  .side { position: static; max-height: 50vh; margin-top: 8px; }
  .tabbtn { flex: 1; text-align: center; padding: 11px 6px; font-size: 15px; }
}