.kn-rll {
  --kn-rll-bg: #111317;
  --kn-rll-panel: #191c22;
  --kn-rll-panel-2: #222731;
  --kn-rll-text: #f4f1ea;
  --kn-rll-muted: #b9b2a6;
  --kn-rll-line: rgba(255,255,255,.12);
  --kn-rll-accent: #e7c46b;
  --kn-rll-paper: #f6f1e8;
  background: var(--kn-rll-bg);
  color: var(--kn-rll-text);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 18px 60px rgba(0,0,0,.22);
  margin: 1.5rem 0;
  font-family: inherit;
}

.kn-rll * { box-sizing: border-box; }

.kn-rll__header {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.25rem 1.35rem;
  border-bottom: 1px solid var(--kn-rll-line);
  background: linear-gradient(135deg, #181b21, #101216);
}

.kn-rll__header h2 {
  margin: 0 0 .25rem;
  color: var(--kn-rll-text);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.15;
}

.kn-rll__header p {
  margin: 0;
  color: var(--kn-rll-muted);
  max-width: 68ch;
}

.kn-rll__status {
  color: var(--kn-rll-accent);
  font-size: .88rem;
  white-space: nowrap;
  padding-top: .15rem;
}

.kn-rll .kn-lab-header {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
}

.kn-rll .kn-lab-suite-kicker {
  display: inline-flex;
  margin-bottom: 0.25rem;
  color: rgb(229, 191, 95);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  line-height: 1.2;
  text-transform: uppercase;
}

.kn-rll .kn-lab-title {
  margin: 0;
  color: #f7f3ea;
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  font-weight: 800;
  line-height: 1.1;
}

.kn-rll .kn-lab-subtitle {
  max-width: 76ch;
  margin: 0;
  color: #c8c0b2;
  font-size: 0.95rem;
  line-height: 1.45;
}

.kn-rll__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 0;
}

.kn-rll__viewer-wrap {
  min-width: 0;
  border-right: 1px solid var(--kn-rll-line);
}

.kn-rll__viewer {
  position: relative;
  background:
    radial-gradient(circle at 25% 20%, rgba(255,255,255,.08), transparent 30%),
    linear-gradient(180deg, #2b2f38, #121419 70%);
  width: 100%;
}

.kn-rll__canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: inherit;
}

.kn-rll__distortion-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
  z-index: 1;
}

.kn-rll__distortion-grid.is-visible {
  opacity: 1;
}

.kn-rll__distortion-grid path,
.kn-rll__distortion-grid rect {
  fill: none;
  stroke: rgba(231,196,107,.5);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.kn-rll__distortion-grid .is-baseline {
  stroke: rgba(155,210,224,.48);
}

.kn-rll__distortion-grid .is-major {
  stroke: rgba(255,255,255,.46);
  stroke-width: 1.2;
}

.kn-rll__distortion-grid .kn-rll__grid-frame {
  stroke-width: 1.35;
  opacity: .85;
}

.kn-rll__loader {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: .85rem;
  padding: 1.25rem;
  background: rgba(14,16,20,.72);
  color: var(--kn-rll-text);
  text-align: center;
  transition: opacity .2s ease, visibility .2s ease;
  z-index: 2;
}

.kn-rll__loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.kn-rll__loader.has-error {
  color: #ffd5d5;
}

.kn-rll__loader-text {
  font-size: .95rem;
  font-weight: 700;
}

.kn-rll__progress {
  width: min(320px, 70vw);
  height: .55rem;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.18);
}

.kn-rll__progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--kn-rll-accent);
  transition: width .18s ease;
}

.kn-rll__labels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--kn-rll-line);
  background: #0e1014;
}

.kn-rll__labels span {
  display: grid;
  gap: .16rem;
  padding: .7rem .9rem;
  font-size: .9rem;
  color: var(--kn-rll-muted);
  text-align: center;
}

.kn-rll__labels strong {
  color: var(--kn-rll-text);
  font-size: .92rem;
  font-weight: 700;
  line-height: 1.2;
}

.kn-rll__labels small {
  color: var(--kn-rll-muted);
  font-size: .78rem;
  line-height: 1.25;
}

.kn-rll__labels span:first-child {
  border-right: 1px solid var(--kn-rll-line);
}

.kn-rll__panel {
  background: var(--kn-rll-panel);
  padding: 1rem;
  overflow: auto;
  max-height: 760px;
}

.kn-rll__section {
  padding: .95rem;
  margin: 0 0 .85rem;
  border: 1px solid var(--kn-rll-line);
  border-radius: 14px;
  background: rgba(255,255,255,.025);
}

.kn-rll__section h3 {
  margin: 0 0 .65rem;
  font-size: 1rem;
  color: var(--kn-rll-text);
}

.kn-rll__hint {
  margin: .65rem 0 0;
  color: var(--kn-rll-muted);
  font-size: .88rem;
  line-height: 1.45;
}

.kn-rll__unit-note {
  margin: .45rem 0 0;
  color: var(--kn-rll-muted);
  font-size: .8rem;
  line-height: 1.35;
}

.kn-rll__section .kn-rll__unit-note,
.kn-rll__section > .kn-rll__hint {
  padding: .55rem .65rem;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  background: rgba(6,8,12,0.42);
  color: rgba(200, 192, 178, 0.78);
  font-size: 0.76rem;
  font-weight: 500;
  line-height: 1.4;
}

.kn-rll__presets,
.kn-rll__segmented {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}

.kn-rll__preset-group {
  display: grid;
  gap: .45rem;
  margin-top: .9rem;
}

.kn-rll__preset-group > span {
  color: var(--kn-rll-muted);
  font-size: .82rem;
  font-weight: 700;
}

.kn-rll__presets--phone button {
  font-size: .82rem;
  padding-inline: .68rem;
}

.kn-rll button {
  border: 1px solid var(--kn-rll-line);
  background: var(--kn-rll-panel-2);
  color: var(--kn-rll-text);
  border-radius: 999px;
  padding: .52rem .78rem;
  cursor: pointer;
  font: inherit;
  font-size: .9rem;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

.kn-rll button:hover,
.kn-rll button:focus-visible {
  border-color: rgba(231,196,107,.65);
  transform: translateY(-1px);
  outline: none;
}

.kn-rll button.is-active {
  background: var(--kn-rll-accent);
  color: #18140a;
  border-color: var(--kn-rll-accent);
  font-weight: 700;
}

.kn-rll__range {
  display: grid;
  gap: .45rem;
  margin-top: .8rem;
  color: var(--kn-rll-muted);
  font-size: .92rem;
}

.kn-rll input[type="range"] {
  width: 100%;
  accent-color: var(--kn-rll-accent);
}

.kn-rll__range.is-disabled {
  opacity: .82;
}

.kn-rll__range.is-disabled input {
  cursor: not-allowed;
}

.kn-rll__toggle {
  display: flex;
  gap: .6rem;
  align-items: flex-start;
  color: var(--kn-rll-text);
  line-height: 1.35;
  margin-top: .55rem;
}

.kn-rll__toggle:first-of-type {
  margin-top: 0;
}

.kn-rll__toggle input {
  margin-top: .2rem;
  accent-color: var(--kn-rll-accent);
}

.kn-rll__metrics dl {
  display: grid;
  gap: .55rem;
  margin: 0;
}

.kn-rll__metrics dl div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: .65rem;
  border-top: 1px solid var(--kn-rll-line);
  padding-top: .55rem;
}

.kn-rll__metrics dl div:first-child {
  border-top: 0;
  padding-top: 0;
}

.kn-rll__metrics dt {
  color: var(--kn-rll-muted);
  font-size: .86rem;
}

.kn-rll__metrics dd {
  margin: 0;
  color: var(--kn-rll-text);
  font-size: .9rem;
}

.kn-rll__actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.kn-rll__actions button:last-child {
  border-color: rgba(231,196,107,.45);
}

.kn-rll__lesson {
  padding: 1.15rem 1.35rem 1.35rem;
  border-top: 1px solid var(--kn-rll-line);
  background: #101216;
}

.kn-rll__lesson h3 {
  margin: 0 0 .45rem;
  color: var(--kn-rll-text);
}

.kn-rll__lesson p {
  margin: .45rem 0 0;
  color: rgba(200, 192, 178, 0.82);
  font-size: 0.88rem;
  max-width: 90ch;
  line-height: 1.48;
}

.kn-rll__lesson p strong {
  color: rgba(247, 243, 234, 0.9);
  font-weight: 700;
}

@media (max-width: 980px) {
  .kn-rll__grid {
    grid-template-columns: 1fr;
  }

  .kn-rll__viewer-wrap {
    border-right: 0;
    border-bottom: 1px solid var(--kn-rll-line);
  }

  .kn-rll__panel {
    max-height: none;
  }
}

@media (max-width: 640px) {
  .kn-rll__header {
    flex-direction: column;
  }

  .kn-rll__status {
    white-space: normal;
  }

  .kn-rll__labels span {
    font-size: .78rem;
    padding: .6rem .4rem;
  }
}

.kn-lab-shell .kn-rll__header {
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
}

.kn-lab-shell .kn-rll__grid {
  overflow: hidden;
  border: 1px solid var(--kn-border);
  border-radius: var(--kn-radius-md);
  background: var(--kn-bg-panel);
}

.kn-lab-shell .kn-rll__viewer-wrap {
  border-color: var(--kn-border);
}

.kn-lab-shell .kn-rll__panel {
  background: var(--kn-bg-panel);
}

.kn-lab-shell .kn-rll__section,
.kn-lab-shell .kn-rll__lesson {
  border: 1px solid var(--kn-border);
  border-radius: var(--kn-radius-md);
  background: rgba(255,255,255,0.035);
}

.kn-lab-shell .kn-rll__lesson {
  margin-top: 1rem;
}

.kn-lab-shell .kn-rll button.is-active {
  background: var(--kn-accent);
  color: var(--kn-text-dark);
  border-color: var(--kn-accent);
}

.kn-rll .is-locked,
.kn-rll button.is-locked,
.kn-rll button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  filter: grayscale(0.65);
}

.kn-lab-full-badge {
  display: none;
  margin-left: 0.35rem;
  padding: 0.12rem 0.35rem;
  border: 1px solid rgba(215,181,109,0.34);
  border-radius: 999px;
  color: var(--kn-accent);
  font-size: 0.62rem;
  font-style: normal;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
}

.kn-rll .is-locked .kn-lab-full-badge,
.kn-rll button:disabled .kn-lab-full-badge {
  display: inline-flex;
}

.kn-rll:not(.is-preview) .kn-lab-lock-note {
  display: none;
}