.lesson-conductor {
  --signal: #f6c344;
  border-top: 1px solid var(--line2);
}

.lesson-launch { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px 24px; margin: 22px 0 26px; padding: clamp(18px, 3vw, 28px); border: 1px solid #f6c34488; border-radius: 12px; background: radial-gradient(circle at 92% 8%, #f6c34420, transparent 38%), #111923; }
.lesson-launch h3 { margin: 7px 0 8px; color: #fff; font: 750 clamp(20px, 2.7vw, 29px)/1.15 var(--display); }
.lesson-launch p { margin: 0; color: var(--body); font-size: 14px; line-height: 1.55; }
.lesson-launch-actions { display: flex; flex-direction: column; justify-content: center; gap: 9px; min-width: 220px; }
.lesson-launch-start, .lesson-launch-actions button { display: grid; place-items: center; min-height: 44px; padding: 8px 14px; border: 1px solid var(--signal); border-radius: 7px; font: 750 13px var(--body-font); text-align: center; text-decoration: none; cursor: pointer; }
.lesson-launch-start { color: #171c20; background: var(--signal); }
.lesson-launch-actions button { color: #fff; background: #19212a; }
.lesson-launch-start:hover, .lesson-launch-actions button:hover { filter: brightness(1.12); }
.lesson-launch-link { grid-column: 1 / -1; color: var(--signal); font: 750 10px var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.lesson-launch input { grid-column: 1 / -1; box-sizing: border-box; width: 100%; min-height: 44px; padding: 9px 12px; border: 1px solid #f6c34466; border-radius: 6px; color: #e6edf3; background: #0b1118; font: 12px var(--mono); }
.lesson-launch .lesson-launch-status { grid-column: 1 / -1; min-height: 1.3em; color: var(--signal); font-size: 12px; }
.lesson-launch :is(a,button,input):focus-visible { outline: 3px solid #fff; outline-offset: 3px; }

.lesson-console {
  display: grid;
  grid-template-columns: minmax(175px, .36fr) minmax(0, 1fr);
  margin-top: 22px;
  border: 1px solid #f6c34466;
  border-radius: 12px;
  overflow: hidden;
  background: #111923;
}

.lesson-console-clock {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 22px 24px;
  border-right: 1px solid #f6c34466;
  background: repeating-linear-gradient(90deg, #f6c3440c 0 1px, transparent 1px 18px), #1b2329;
}

.lesson-console-label,
.lesson-console-topline,
.lesson-console-clock > span:last-child {
  font: 750 11px/1.4 var(--mono);
  letter-spacing: .04em;
}

.lesson-console-label,
.lesson-console-topline { color: var(--signal); text-transform: uppercase; }
.lesson-console-clock output { margin: 8px 0 3px; color: #fff; font: 750 clamp(40px, 5vw, 65px)/1 var(--mono); letter-spacing: -.09em; font-variant-numeric: tabular-nums; }
.lesson-console-clock > span:last-child { color: var(--body); letter-spacing: 0; }
.lesson-console-mission { display: flex; flex-direction: column; min-width: 0; padding: 22px 25px 20px; }
.lesson-console-topline { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.lesson-console-topline > span:last-child { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.lesson-console-topline select { padding: 6px 22px 6px 8px; border: 1px solid #f6c34488; border-radius: 4px; color: #fff; background: #202830; font: inherit; cursor: pointer; }
.lesson-console h3 { margin: 18px 0 3px; color: #fff; font: 750 clamp(20px, 2.4vw, 27px)/1.18 var(--display); }
.lesson-console-mission p { min-height: 2.8em; margin: 0 0 16px; color: var(--body); font-size: 14px; line-height: 1.4; }
.lesson-console-segments { display: flex; gap: 3px; height: 7px; margin-top: auto; }
.lesson-console-segments span { flex-basis: 0; min-width: 3px; background: #ffffff29; transform-origin: left; }
.lesson-console-segments span.is-active { background: var(--signal); }
.lesson-console-segments span.is-complete { background: var(--green); }
.lesson-console progress { display: block; width: 100%; height: 4px; margin-top: 7px; border: 0; accent-color: var(--signal); }
.lesson-console progress::-webkit-progress-bar { background: #ffffff18; }
.lesson-console progress::-webkit-progress-value { background: var(--signal); }
.lesson-console progress::-moz-progress-bar { background: var(--signal); }
.lesson-console-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.lesson-console-actions button { min-height: 44px; padding: 9px 15px; border: 1px solid #ffffff4d; border-radius: 7px; color: #fff; background: #19212a; font: 700 13px var(--body-font); cursor: pointer; }
.lesson-console-actions button:first-child { border-color: var(--signal); color: #171c20; background: var(--signal); }
.lesson-console-actions button:disabled { opacity: .48; cursor: default; }
.lesson-console-actions button:not(:disabled):hover { filter: brightness(1.12); }
.lesson-console-actions button:focus-visible,
.lesson-console-topline select:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.lesson-console-help { margin-top: 12px; color: var(--muted); font-size: 13px; }

@media (max-width: 620px) {
  .lesson-launch { grid-template-columns: 1fr; }
  .lesson-launch-actions { min-width: 0; }
  .lesson-console { grid-template-columns: 1fr; }
  .lesson-console-clock { border-right: 0; border-bottom: 1px solid #f6c34466; }
  .lesson-console-mission { padding: 20px; }
  .lesson-console-actions button:first-child { width: 100%; }
  .lesson-console-actions button:not(:first-child) { flex: 1; }
}

@media print {
  .lesson-conductor { display: none !important; }
}