.sl-main {
  background: var(--fives-bg);
  color: var(--fives-text);
  font-family: var(--fives-body);
}

.sl-main > *,
.sl-picker > * {
  box-sizing: border-box;
}

.sl-eyebrow {
  font-family: var(--fives-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fives-accent);
  margin: 0 0 var(--fives-s-3);
}

.sl-h1 {
  font-family: var(--fives-display);
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.04;
  font-weight: 800;
  margin: 0;
  color: var(--fives-text);
}

.sl-h2 {
  font-family: var(--fives-display);
  font-size: 24px;
  line-height: 1.25;
  font-weight: 700;
  margin: 0;
}

.sl-h3 {
  font-family: var(--fives-display);
  font-size: 18px;
  line-height: 1.35;
  font-weight: 700;
  margin: 0;
}

.sl-h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fives-muted);
  margin: 0 0 var(--fives-s-2);
}

.sl-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--fives-s-2);
  font-family: var(--fives-body);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 20px;
  border-radius: var(--fives-r-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;

  transition: transform var(--fives-t-standard) var(--fives-e-rebound),
              background var(--fives-t-quick) var(--fives-e-settle),
              border-color var(--fives-t-quick) var(--fives-e-settle);
}

.sl-btn:focus-visible { outline: 2px solid var(--fives-primary); outline-offset: 2px; }

.sl-btn-primary {
  background: var(--fives-primary);
  color: var(--fives-bg);
}
.sl-btn-primary:hover { background: var(--fives-primary-700); }

.sl-btn-ghost {
  background: transparent;
  color: var(--fives-primary);
  border-color: var(--fives-line);
}
.sl-btn-ghost:hover { border-color: var(--fives-primary); }

.sl-btn-teach svg { width: 14px; height: 14px; }

.sl-btn-taught.is-on {
  color: var(--fives-bg);
  background: var(--fives-primary);
  border-color: var(--fives-primary);
}

.sl-btn-taught {
  transition: transform    var(--fives-t-standard) var(--fives-e-rebound),
              background   var(--fives-t-standard) var(--fives-e-settle),
              color        var(--fives-t-standard) var(--fives-e-settle),
              border-color var(--fives-t-standard) var(--fives-e-settle);
}
.sl-btn-taught.is-flash { animation: sl-pop var(--fives-t-standard) var(--fives-e-pop); }
@keyframes sl-pop {
  0% { transform: scale(1); }
  45% { transform: scale(1.06); }
  100% { transform: scale(1); }
}

@keyframes sl-pop-cell {
  0% { transform: scale(1); }
  45% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

.sk-flip {
  position: relative;
  display: inline-grid;
  place-items: center;
}
.sk-flip-spacer { visibility: hidden; }
.sk-flip-val {
  position: absolute;
  inset: 0;
  display: block;
  white-space: nowrap;
}
@keyframes skFlipOut {
  from { opacity: 1; transform: none; }
  to   { opacity: 0; transform: translateY(-6px); }
}
@keyframes skFlipIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
.sk-flip-val.is-out { animation: skFlipOut var(--fives-t-quick) var(--fives-e-settle) both; }
.sk-flip-val.is-in {
  animation: skFlipIn var(--fives-t-standard) var(--fives-e-rebound) both;
  animation-delay: var(--fives-t-quick);
}

.sl-hero {
  max-width: 1240px;
  margin: 0 auto;
  padding: 72px 40px 24px;
}

.sl-hero-sub {
  font-size: 17px;
  line-height: 1.55;
  color: var(--fives-muted);

  max-width: 35.33em;
  margin: var(--fives-s-4) 0 0;
}

.sl-hero-meta {
  display: flex;
  align-items: center;
  gap: var(--fives-s-3);
  margin: 0;
  padding: 24px 40px 0;
}

.sl-hero-meta-text { font-size: 14px; color: var(--fives-muted); }

.sl-hero.sl-band {
  position: relative;
  max-width: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
}
.sl-band-inner {
  box-sizing: border-box;
  max-width: 1240px;
  margin: 0 auto;
  padding: 40px;
  min-height: 250px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  column-gap: 40px;
  align-items: center;
}

.sl-band-col { position: relative; z-index: 1; }

.sl-band .sl-eyebrow { color: var(--fives-on-ink-muted); }
.sl-band .sl-h1 {
  font-size: 44px;
  line-height: 1.02;
  color: var(--fives-on-ink);
}

.sl-band .sl-h1 [data-ink="line"] { display: block; }
.sl-band .sl-hero-sub { color: var(--fives-on-ink-muted); }

.sl-band-mark {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  align-self: start;
  margin-top: -53px;
  z-index: 0;
  pointer-events: none;
}

.sl-band-mark svg { display: block; }

.sl-ring {
  position: relative;
  width: 44px;
  height: 44px;
  flex: none;
  display: inline-grid;
  place-items: center;
}
.sl-ring svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.sl-ring circle { transition: stroke-dashoffset var(--fives-t-gentle) var(--fives-e-settle); }
.sl-ring-n {
  position: relative;
  font-size: 11px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--fives-primary);
}

.sl-grid {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 40px 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--fives-s-5);
}

@media (min-width: 981px) {
  .sl-grid > .sl-card:nth-child(4):last-child { grid-column: 2; }
}

.sl-card {
  display: flex;
  flex-direction: column;
  gap: var(--fives-s-3);
  padding: var(--fives-s-6);
  background: var(--fives-bg-2);
  border: 1.5px solid var(--fives-line);
  border-radius: var(--fives-r-lg);
  text-decoration: none;
  color: var(--fives-text);
  transition: transform var(--fives-t-standard) var(--fives-e-settle),
              border-color var(--fives-t-standard) var(--fives-e-settle),
              box-shadow var(--fives-t-standard) var(--fives-e-settle);
}
.sl-card:hover {
  transform: translateY(-3px);
  border-color: var(--fives-primary);
  box-shadow: 0 10px 24px rgba(35, 76, 54, 0.10);
}
.sl-card:focus-visible {
  outline: 2px solid var(--fives-primary);
  outline-offset: 2px;
}

.sl-card.fv-press-row:active { transform: scale(0.985); }

.sl-card-top {
  display: flex;
  align-items: center;
  gap: var(--fives-s-2);
}
.sl-card-crumb {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fives-muted);
  margin-right: auto;

  white-space: nowrap;
}

.sl-pill-draft,
.sl-pill-taught {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--fives-r-sm);
}
.sl-pill-draft {
  color: var(--fives-accent);
  border: 1px solid var(--fives-accent);
}
.sl-pill-taught {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--fives-bg);
  background: var(--fives-primary);
}
.sl-pill-taught svg { width: 10px; height: 10px; }

.sl-card-title {
  font-family: var(--fives-display);
  font-size: 21px;
  line-height: 1.25;
  font-weight: 700;
  margin: 0;
}

.sl-card-summary {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--fives-muted);
  margin: 0;
  flex: 1;
}

.sl-card-meta {
  display: block;
  font-size: 13px;
  color: var(--fives-muted);
  margin: 0;

}
.sl-card-meta > span { white-space: nowrap; }

.sl-card-open {
  font-size: 14px;
  font-weight: 600;
  color: var(--fives-primary);
}
.sl-card-open span {
  display: inline-block;
  transition: transform var(--fives-t-quick) var(--fives-e-settle);
}
.sl-card:hover .sl-card-open span { transform: translateX(4px); }

.sl-crosslink {
  background: var(--fives-bg-2);
  border-top: 1.5px solid var(--fives-line);
  margin-top: 48px;
}
.sl-crosslink-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 64px 40px;
}
.sl-crosslink-inner p {
  max-width: 37.85em;
  color: var(--fives-muted);
  line-height: 1.55;
  margin: var(--fives-s-3) 0 var(--fives-s-6);
}
.sl-crosslink .sl-btn { margin-right: var(--fives-s-3); }

.sl-lesson-head,
.sl-lesson-grid,
.sl-phases-head,
.sl-phases,
.sl-wrapup,
.sl-lesson-nav {
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 40px;
  padding-right: 40px;
}

.sl-lesson-head { padding-top: 56px; }

.sl-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--fives-s-2);
  font-size: 13px;
  color: var(--fives-muted);
  margin-bottom: var(--fives-s-4);
}
.sl-crumbs a { color: var(--fives-primary); text-decoration: none; }
.sl-crumbs a:hover { text-decoration: underline; }
.sl-crumbs a:focus-visible { outline: 2px solid var(--fives-primary); outline-offset: 2px; }
.sl-crumbs .is-current { color: var(--fives-text); font-weight: 600; }

.sl-lesson-title-row {
  display: flex;
  align-items: baseline;
  gap: var(--fives-s-3);
  flex-wrap: wrap;
}

.sl-lesson-title-row:has(.sl-pill-draft) .sk-tk-host { padding-right: 44px; }

.sl-lesson-meta {
  display: flex;
  gap: var(--fives-s-2);
  font-size: 14px;
  color: var(--fives-muted);
  margin: var(--fives-s-3) 0 0;
}

.sl-lesson-summary {
  font-size: 16px;
  line-height: 1.55;
  color: var(--fives-muted);
  max-width: 40.38em;
  margin: var(--fives-s-4) 0 0;
}

.sl-lesson-actions {
  display: flex;
  gap: var(--fives-s-3);
  flex-wrap: wrap;
  margin-top: var(--fives-s-6);
}

.sl-lesson-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--fives-s-5);
  padding-top: 40px;
}

.sl-block {
  background: var(--fives-bg-2);
  border: 1.5px solid var(--fives-line);
  border-radius: var(--fives-r-lg);
  padding: var(--fives-s-6);
}

.sl-block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--fives-s-3);
  margin-bottom: var(--fives-s-4);
}

.sl-objectives {
  list-style: none;
  margin: var(--fives-s-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--fives-s-3);
}
.sl-objectives li {
  display: flex;
  gap: var(--fives-s-3);
  font-size: 15px;
  line-height: 1.5;
}
.sl-obj-n {
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--fives-bg);
  background: var(--fives-primary);
  border-radius: 50%;
}

.sl-vocab {
  margin: var(--fives-s-5) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--fives-s-2);
  align-items: center;
}
.sl-vocab-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--fives-muted);
  margin-right: var(--fives-s-1);
}
.sl-vocab-chip {
  font-size: 13px;
  font-weight: 600;
  color: var(--fives-primary);
  background: var(--fives-bg);
  border: 1px solid var(--fives-line);
  border-radius: var(--fives-r-sm);
  padding: 3px 8px;
}

.sl-kit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--fives-s-2);
}
.sl-kit-item {
  display: flex;
  align-items: center;
  gap: var(--fives-s-3);
  padding: var(--fives-s-2) var(--fives-s-3);
  margin: 0 calc(-1 * var(--fives-s-3));
  border-radius: var(--fives-r-md);
  cursor: pointer;
  font-size: 15px;
  transition: background var(--fives-t-quick) var(--fives-e-settle),
              transform var(--fives-t-standard) var(--fives-e-rebound);
}
.sl-kit-item:hover { background: var(--fives-bg); }
.sl-kit-item input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.sl-kit-box {
  flex: none;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--fives-line);
  border-radius: var(--fives-r-sm);
  background: var(--fives-bg);
  display: grid;
  place-items: center;
  color: var(--fives-bg);
  transition: background var(--fives-t-quick) var(--fives-e-settle),
              border-color var(--fives-t-quick) var(--fives-e-settle);
}
.sl-kit-box svg { width: 12px; height: 12px; opacity: 0; transform: scale(0.5); transition: opacity var(--fives-t-quick) var(--fives-e-settle), transform var(--fives-t-standard) var(--fives-e-pop); }
.sl-kit-item.is-checked .sl-kit-box {
  background: var(--fives-primary);
  border-color: var(--fives-primary);
}
.sl-kit-item.is-checked .sl-kit-box svg { opacity: 1; transform: scale(1); }

.sl-kit-name {
  position: relative;
  transition: color var(--fives-t-quick) var(--fives-e-settle);
}
.sl-kit-name::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 52%;
  height: 1.5px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
  transition: transform var(--fives-t-standard) var(--fives-e-settle);
}
.sl-kit-item.is-checked .sl-kit-name { color: var(--fives-muted); }
.sl-kit-item.is-checked .sl-kit-name::after {
  transform: scaleX(1);
  transition: transform var(--fives-t-standard) var(--fives-e-draw);
}
.sl-kit-item input:focus-visible ~ .sl-kit-box { outline: 2px solid var(--fives-primary); outline-offset: 2px; }
.sl-kit-qty { margin-left: auto; font-size: 13px; color: var(--fives-muted); font-variant-numeric: tabular-nums; }

.sl-kit-done {
  position: relative;
  display: inline-block;
  padding-right: 18px;
  font-size: 13px;
  font-weight: 700;
  color: var(--fives-accent-700);
}

.sl-kit-done.is-flash { animation: sl-pop var(--fives-t-standard) var(--fives-e-pop); }
.sl-kit-reset {
  font-size: 13px;
  font-weight: 600;
  color: var(--fives-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.sl-kit-reset:disabled { opacity: 0.4; cursor: default; }
.sl-kit-reset:not(:disabled):hover { color: var(--fives-primary); }
.sl-kit-reset:focus-visible { outline: 2px solid var(--fives-primary); outline-offset: 2px; }

.sl-safety-h { margin-top: var(--fives-s-6); }
.sl-safety {
  margin: var(--fives-s-3) 0 0;
  padding-left: 18px;
  display: grid;
  gap: var(--fives-s-2);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--fives-muted);
}

.sl-phases-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--fives-s-3);
  padding-top: 64px;
  margin-bottom: 0;
}
.sl-phases-hint { font-size: 14px; color: var(--fives-muted); }
.sl-inline-teach {
  font-size: 14px;
  font-weight: 600;
  color: var(--fives-primary);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
.sl-inline-teach:hover { text-decoration: underline; }
.sl-inline-teach:focus-visible { outline: 2px solid var(--fives-primary); outline-offset: 2px; }

.sl-phases {
  list-style: none;
  margin: var(--fives-s-6) auto 0;
  padding-top: 0;
  padding-bottom: 0;
  display: grid;
  gap: var(--fives-s-5);
}

.sl-phase {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: var(--fives-s-5);

  scroll-margin-top: calc(var(--fives-nav-h, calc(77px + var(--safe-top, 0px)))
                          + var(--fives-subbar-h, 0px) + 12px);
}

.sl-phase-rail {
  border-right: 2px solid var(--fives-line);
  padding-top: var(--fives-s-2);
}
.sl-phase-time {
  font-family: var(--fives-body);
  font-size: 14px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--fives-primary);
  display: block;
}
.sl-phase-time small {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--fives-muted);
}

.sl-phase-body {
  background: var(--fives-bg-2);
  border: 1.5px solid var(--fives-line);
  border-radius: var(--fives-r-lg);
  padding: var(--fives-s-6);
}

.sl-phase-head { margin-bottom: var(--fives-s-4); }
.sl-phase-n {
  font-size: 13px;
  font-weight: 700;
  color: var(--fives-accent);
  margin-right: var(--fives-s-2);
  font-variant-numeric: tabular-nums;
}
.sl-phase-org {
  font-size: 13px;
  color: var(--fives-muted);
  margin: var(--fives-s-1) 0 0;
}

.sl-phase-cols {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: var(--fives-s-6);
  align-items: start;
}

.sl-phase-brief { font-size: 15px; line-height: 1.55; margin: 0 0 var(--fives-s-4); }

.sl-cue {
  margin: 0 0 var(--fives-s-4);
  padding: var(--fives-s-3) var(--fives-s-4);
  border-left: 3px solid var(--fives-accent);
  background: var(--fives-bg);
  border-radius: 0 var(--fives-r-md) var(--fives-r-md) 0;
}
.sl-cue p {
  margin: var(--fives-s-1) 0 0;
  font-size: 15.5px;
  line-height: 1.5;
  font-weight: 500;
}
.sl-cue-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fives-accent);
}

.sl-coach {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--fives-s-5);
  margin-top: var(--fives-s-4);
}
.sl-coach ul {
  margin: 0;
  padding-left: 16px;
  display: grid;
  gap: var(--fives-s-2);
  font-size: 14px;
  line-height: 1.5;
  color: var(--fives-muted);
}
.sl-coach li::marker { color: var(--fives-accent); }

.sl-tip {
  margin: var(--fives-s-4) 0 0;
  padding: var(--fives-s-3) var(--fives-s-4);
  border-left: 2px dashed var(--fives-line);
}
.sl-tip p {
  margin: var(--fives-s-1) 0 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--fives-muted);
}
.sl-tip-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fives-muted);
}

.sl-diffext {
  margin-top: var(--fives-s-5);
  padding-top: var(--fives-s-4);
  border-top: 1.5px solid var(--fives-line);
}
.sl-diffext-h {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fives-muted);
  margin: 0 0 var(--fives-s-3);
}
.sl-diffext-row {
  display: grid;
  gap: var(--fives-s-3);
  margin: 0 0 var(--fives-s-3);
}
.sl-diffext-row:last-child { margin-bottom: 0; }
.sl-diffext-row p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
}
.sl-diffext-row strong { color: var(--fives-primary); font-weight: 700; }

.sl-diagram {
  width: 100%;
  max-width: 220px;
  margin: 0 auto;
}
.sl-diagram svg { width: 100%; height: auto; display: block; }
.sl-diagram-lg { max-width: 260px; }
.sl-diagram-sm { max-width: 220px; margin: 0; }

.sl-wrapup { margin-top: 64px; }
.sl-ticks-hint { font-size: 13px; color: var(--fives-muted); }
.sl-ticks-intro { font-size: 14.5px; color: var(--fives-muted); margin: 0 0 var(--fives-s-4); }

.sl-ticks-table { display: grid; gap: var(--fives-s-3); }
.sl-ticks-row {
  display: flex;
  align-items: center;
  gap: var(--fives-s-4);
  flex-wrap: wrap;
}
.sl-ticks-label { font-size: 14.5px; font-weight: 600; min-width: 180px; }
.sl-ticks-bands { display: flex; gap: var(--fives-s-2); align-items: center; }
.sl-ticks-cell {
  display: grid;
  gap: 2px;
  place-items: center;
  min-width: 64px;
  padding: var(--fives-s-2) var(--fives-s-3);
  background: var(--fives-bg);
  border: 1.5px solid var(--fives-line);
  border-radius: var(--fives-r-md);
  cursor: pointer;
  font-family: var(--fives-body);

  transition: border-color var(--fives-t-quick) var(--fives-e-settle),
              transform var(--fives-t-standard) var(--fives-e-rebound);
}
.sl-ticks-cell:hover { border-color: var(--fives-primary); }
.sl-ticks-band { font-size: 12px; font-weight: 600; color: var(--fives-muted); }
.sl-ticks-count {
  font-size: 18px;
  font-weight: 700;
  color: var(--fives-primary);
  font-variant-numeric: tabular-nums;

  text-align: center;
}
.sl-ticks-cell.is-flash { animation: sl-pop-cell var(--fives-t-standard) var(--fives-e-pop); }
.sl-ticks-clear {
  font-size: 15px;
  color: var(--fives-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--fives-s-2);
}
.sl-ticks-clear:hover { color: var(--fives-alert); }
.sl-ticks-clear:focus-visible { outline: 2px solid var(--fives-primary); outline-offset: 2px; }

.sl-plenary-h { margin-top: var(--fives-s-6); }
.sl-plenary {
  margin: var(--fives-s-3) 0 0;
  padding-left: 18px;
  display: grid;
  gap: var(--fives-s-2);
  font-size: 14.5px;
  color: var(--fives-muted);
}

.sl-lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--fives-s-4);
  padding-top: 48px;
  padding-bottom: 16px;
}
.sl-lesson-nav-link {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--fives-primary);
  text-decoration: none;
}
.sl-lesson-nav-link:hover { text-decoration: underline; }
.sl-lesson-nav-link:focus-visible { outline: 2px solid var(--fives-primary); outline-offset: 2px; }

.sl-teach {

  --sl-margin-x: max(
    calc(20px + var(--safe-left, 0px)),
    calc((100% - min(720px, 100%)) / 2 + var(--fives-s-5) - var(--fives-s-8)));
  --sl-top-h: calc(56px + var(--safe-top, 0px));
  --sl-foot-h: calc(72px + var(--safe-bottom, 0px));
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  background: var(--fives-bg);
  color: var(--fives-text);
  font-family: var(--fives-body);
  overflow: hidden;
}

.sl-teach-top {
  position: relative;
  z-index: 3;
  height: var(--sl-top-h);
  flex: none;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: var(--fives-s-4);
  padding: var(--safe-top, 0px) calc(var(--fives-s-5) + var(--safe-right, 0px)) 0 calc(var(--fives-s-5) + var(--safe-left, 0px));
  border-bottom: 1px solid var(--fives-line);
  background: var(--fives-bg);
}

.sl-teach-exit {
  font-family: var(--fives-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--fives-accent);
  background: none;
  border: 0;
  cursor: pointer;
  min-height: 44px;
  padding: 0 var(--fives-s-2);
  margin-left: calc(var(--fives-s-2) * -1);
  white-space: nowrap;
}

.sl-teach-register {
  flex: 1;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

.sl-teach-regtabs {
  position: relative;
  flex: 0 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
}
.sl-teach-regtabs svg { width: 130px; height: 40px; flex: none; }

.sl-teach-regtab {
  position: absolute;
  top: 50%;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  height: 44px;
  transform: translateY(-50%);
  cursor: pointer;
  border-radius: var(--fives-r-sm);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.sl-teach-regtab:focus-visible { outline: 2px solid var(--fives-accent); outline-offset: -2px; }

.sl-teach-regtab {
  transition: transform var(--fives-t-standard) var(--fives-e-rebound),
              background var(--fives-t-quick) var(--fives-e-settle);
}
.sl-teach-regtab.fv-press-row:active {
  transform: translateY(-50%) scale(0.985);
  transition: transform var(--fives-t-instant) var(--fives-e-settle),
              background var(--fives-t-instant) var(--fives-e-settle);
}

.sl-teach-regtabs.is-wide { flex: none; }

.sl-teach-regbtn {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 44px;
  min-width: 44px;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  transform: translateY(-50%);
  cursor: pointer;
  border-radius: var(--fives-r-sm);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.sl-teach-regbtn:focus-visible { outline: 2px solid var(--fives-accent); outline-offset: -2px; }

.sl-teach-regbtn {
  transition: transform var(--fives-t-standard) var(--fives-e-rebound),
              background var(--fives-t-quick) var(--fives-e-settle);
}
.sl-teach-regbtn.fv-press-row:active {
  transform: translateY(-50%) scale(0.985);
  transition: transform var(--fives-t-instant) var(--fives-e-settle),
              background var(--fives-t-instant) var(--fives-e-settle);
}

.sl-sheet-root {
  position: absolute;
  inset: 0;
  z-index: 20;
}
.sl-sheet-scrim {
  position: absolute;
  inset: 0;
  background: rgba(27, 42, 56, 0.24);
  background: color-mix(in srgb, var(--fives-ink-900) 24%, transparent);
  animation: slScrimIn var(--fives-t-standard) var(--fives-e-settle) both;
}
.sl-sheet {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  box-sizing: border-box;
  max-height: 78%;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--fives-bg);
  border-top: 1px solid var(--fives-line);
  padding:
    var(--fives-s-4)
    calc(var(--fives-s-5) + var(--safe-right, 0px))
    calc(var(--fives-s-4) + var(--safe-bottom, 0px))
    calc(var(--fives-s-5) + var(--safe-left, 0px));
  transform: translateY(100%);
  animation: slSheetIn var(--fives-t-gentle) var(--fives-e-rebound) both;
}
.sl-sheet:focus { outline: none; }
.sl-sheet-root.is-out .sl-sheet-scrim {
  animation: slScrimOut var(--fives-t-standard) var(--fives-e-settle) both;
}
.sl-sheet-root.is-out .sl-sheet {
  animation: slSheetOut var(--fives-t-standard) var(--fives-e-settle) both;
}
@keyframes slSheetIn  { from { transform: translateY(100%); } to { transform: translateY(0); } }
@keyframes slSheetOut { from { transform: translateY(0); }    to { transform: translateY(100%); } }
@keyframes slScrimIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes slScrimOut { from { opacity: 1; } to { opacity: 0; } }

.sl-sheet-title {
  font-family: var(--fives-mono);
  font-size: 12px;
  font-weight: 600;
  line-height: 16px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fives-accent-700);
  margin: 0 0 var(--fives-s-2);
}
.sl-sheet-list { list-style: none; margin: 0; padding: 0; }
.sl-sheet-row {
  display: flex;
  align-items: center;
  gap: var(--fives-s-3);
  box-sizing: border-box;
  width: 100%;
  min-height: 48px;
  padding: var(--fives-s-2) var(--fives-s-2) var(--fives-s-2) var(--fives-s-3);
  margin: 0;
  background: none;
  border: 0;
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--fives-line);
  color: var(--fives-text);
  font-family: var(--fives-body);
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--fives-t-quick) var(--fives-e-settle),
              transform var(--fives-t-standard) var(--fives-e-rebound);
}
.sl-sheet-list li:last-child .sl-sheet-row { border-bottom: 0; }
.sl-sheet-row.is-now { border-left-color: var(--fives-accent); }
.sl-sheet-row:hover { background: var(--fives-bg-2); }
.sl-sheet-row:focus-visible { outline: 2px solid var(--fives-accent); outline-offset: -2px; }
.sl-sheet-n {
  flex: none;
  min-width: 16px;
  font-family: var(--fives-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 0.06em;
  color: var(--fives-muted);
  font-variant-numeric: tabular-nums;
}
.sl-sheet-name {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 20px;
}
.sl-sheet-time {
  flex: none;
  font-family: var(--fives-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 0.06em;
  color: var(--fives-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sl-sheet-tick { flex: none; width: 18px; height: 18px; }

.sl-teach-register .sk-rg-base,
.sl-teach-register .sk-rg-ink {
  transition: stroke var(--fives-t-quick) var(--fives-e-settle);
}
.sl-teach-register .sk-rg-ink {
  transition: stroke-dashoffset var(--fives-t-standard) var(--fives-e-draw),
              stroke var(--fives-t-quick) var(--fives-e-settle);
}
.sl-teach-register .sk-rg-mark.is-hover .sk-rg-base,
.sl-teach-register .sk-rg-mark.is-hover .sk-rg-ink { stroke: var(--fives-accent-700); }

.sl-teach-count {
  font-family: var(--fives-mono);
  font-size: 13px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 0.06em;
  color: var(--fives-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  min-width: 40px;
  text-align: right;
}

.sl-teach-margin {
  position: absolute;
  z-index: 2;
  pointer-events: none;
  top: var(--sl-top-h);
  bottom: var(--sl-foot-h);
  left: var(--sl-margin-x);
  width: 5px;
  margin-left: -2px;
}
.sl-teach-margin-line { left: 2px; }
.sl-teach-margin-bar { }

.sl-teach-scroll {
  position: relative;
  z-index: 2;
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.sl-teach-inner {
  max-width: 720px;
  margin: 0 auto;
  box-sizing: border-box;
  padding: var(--fives-s-6) calc(var(--fives-s-5) + var(--safe-right, 0px))
           var(--fives-s-8) calc(var(--fives-s-5) + var(--safe-left, 0px));
}

@keyframes sl-tm-out      { to   { opacity: 0; transform: translateX(-24px); } }
@keyframes sl-tm-out-back { to   { opacity: 0; transform: translateX(24px); } }
@keyframes sl-tm-in       { from { opacity: 0; transform: translateX(24px); }  to { opacity: 1; transform: translateX(0); } }
@keyframes sl-tm-in-back  { from { opacity: 0; transform: translateX(-24px); } to { opacity: 1; transform: translateX(0); } }
.sl-teach-inner.is-out      { animation: sl-tm-out      var(--fives-t-standard) var(--fives-e-settle) both; }
.sl-teach-inner.is-out-back { animation: sl-tm-out-back var(--fives-t-standard) var(--fives-e-settle) both; }
.sl-teach-inner.is-in       { animation: sl-tm-in       var(--fives-t-gentle) var(--fives-e-rebound) both; }
.sl-teach-inner.is-in-back  { animation: sl-tm-in-back  var(--fives-t-gentle) var(--fives-e-rebound) both; }

.sl-teach-slot {
  font-family: var(--fives-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fives-accent-700);
  margin: 0 0 var(--fives-s-2);
}

.sl-teach-name {
  font-family: var(--fives-display);
  font-size: 40px;
  line-height: 1.08;
  font-weight: 800;
  color: var(--fives-text);
  margin: 0 0 var(--fives-s-5);
  outline: none;
}

.sl-teach-inner > .sk-tk-host { margin: 0 0 var(--fives-s-5); }
.sl-teach-inner > .sk-tk-host .sl-teach-name { margin-bottom: 0; }

.sl-teach-cue {
  margin: 0 0 var(--fives-s-5);
  padding: var(--fives-s-4) var(--fives-s-5);
  border-left: 4px solid var(--fives-accent);
  background: var(--fives-bg-2);
  border-radius: 0 var(--fives-r-md) var(--fives-r-md) 0;
}
.sl-teach-cue p {
  margin: var(--fives-s-2) 0 0;
  font-family: var(--fives-display);
  font-size: 22px;
  line-height: 31px;
  font-weight: 600;
  color: var(--fives-text);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0, transparent 25px,
    var(--fives-rule) 25px, var(--fives-rule) 26px,
    transparent 26px, transparent 31px);
}

.sl-teach-brief {
  font-size: 17px;
  line-height: 1.6;
  color: var(--fives-text);
  margin: 0 0 var(--fives-s-5);
}

.sl-teach .sl-diagram { margin-top: var(--fives-s-4); margin-bottom: var(--fives-s-5); }

.sl-timer {
  display: flex;
  align-items: center;
  gap: var(--fives-s-5);
  flex-wrap: wrap;
  margin: 0 0 var(--fives-s-6);
}

.sl-timer-ring {
  position: relative;
  width: 144px;
  height: 144px;
  flex: none;
  display: grid;
  place-items: center;
}
.sl-timer-ring svg { position: absolute; inset: 0; width: 100%; height: 100%; }

.sl-timer-clock {
  position: relative;

  display: block;
  width: 144px;
  text-align: center;
  font-family: var(--fives-mono);
  font-size: 36px;
  line-height: 44px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--fives-text);
}
.sl-timer.is-over .sl-timer-clock { color: var(--fives-alert); }

.sl-timer-controls {
  display: flex;
  flex-direction: column;
  gap: var(--fives-s-2);
}
.sl-timer-btn {
  font-family: var(--fives-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--fives-text);
  background: var(--fives-bg);
  border: 1px solid var(--fives-line);
  border-radius: var(--fives-r-md);
  min-height: 44px;
  padding: 0 var(--fives-s-4);
  cursor: pointer;
  text-align: center;

  transition: border-color var(--fives-t-quick) var(--fives-e-settle),
              background var(--fives-t-quick) var(--fives-e-settle),
              color var(--fives-t-quick) var(--fives-e-settle),
              transform var(--fives-t-standard) var(--fives-e-rebound);
}
.sl-timer-btn:hover { border-color: var(--fives-accent); }
.sl-timer-main {
  background: var(--fives-primary);
  border-color: var(--fives-primary);
  color: var(--fives-bg);
}
.sl-timer-main:hover { background: var(--fives-primary-700); border-color: var(--fives-primary-700); }
.sl-timer-chime.is-on { border-color: var(--fives-accent); color: var(--fives-accent); }

.sl-timer-arc.is-draining {
  transition: stroke-dashoffset var(--fives-t-standard) var(--fives-e-draw);
}

.sl-teach-panels {
  display: grid;
  gap: var(--fives-s-3);
  margin-top: var(--fives-s-5);
}

.sl-teach-panel {
  background: var(--fives-bg-2);
  border: 1px solid var(--fives-line);
  border-radius: var(--fives-r-md);
  transition: border-color var(--fives-t-quick) var(--fives-e-settle);
}
.sl-teach-panel:hover { border-color: var(--fives-accent); }
.sl-teach-panel-btn {
  display: block;
  width: 100%;
  text-align: left;
  font-family: var(--fives-body);
  background: none;
  border: 0;
  border-radius: var(--fives-r-md);
  box-sizing: border-box;
  min-height: 48px;
  padding: var(--fives-s-3) var(--fives-s-5);
  cursor: pointer;
  color: var(--fives-text);
  transition: transform var(--fives-t-standard) var(--fives-e-rebound);
}
.sl-teach-panel-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--fives-mono);
  font-size: 13px;
  font-weight: 500;
  line-height: 18px;
  letter-spacing: 0.12em;
  color: var(--fives-accent-700);
}

.sk-ind { display: block; overflow: visible; flex: none; }
.sk-ind-s { stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; }
.sk-ind-v {
  transform-box: fill-box;
  transform-origin: center;
  transform: scaleY(1);
  transition: transform var(--fives-t-standard) var(--fives-e-draw);
}
.sl-teach-panel-btn[aria-expanded="true"] .sk-ind-v { transform: scaleY(0); }

.sl-teach-panel-list {
  margin: 0;
  padding: 0 var(--fives-s-5) var(--fives-s-3) calc(var(--fives-s-5) + 18px);
  display: grid;
  gap: var(--fives-s-2);
  font-size: 15px;
  line-height: 1.5;
}
.sl-teach-panel-list li::marker { color: var(--fives-accent); }

@keyframes skRiseIn6 {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
@keyframes skFadeOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}
.sl-teach-panel-list.is-opening li {
  animation: skRiseIn6 var(--fives-t-standard) var(--fives-e-rebound) both;
  animation-delay: calc(min(var(--sk-i, 0), 5) * var(--fives-t-step));
}
.sl-teach-panel-list.is-closing li {
  animation: skFadeOut var(--fives-t-quick) var(--fives-e-settle) both;
}

.sl-teach-foot {
  position: relative;
  z-index: 3;
  height: var(--sl-foot-h);
  flex: none;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: var(--fives-s-4);
  padding: 0 calc(var(--fives-s-5) + var(--safe-right, 0px)) var(--safe-bottom, 0px) calc(var(--fives-s-5) + var(--safe-left, 0px));
  border-top: 1px solid var(--fives-line);
  background: var(--fives-bg);
}
.sl-teach-next {
  flex: 1;
  text-align: center;
  font-size: 14px;
  color: var(--fives-muted);
}
.sl-teach-nav {
  font-family: var(--fives-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--fives-text);
  background: var(--fives-bg);
  border: 1px solid var(--fives-line);
  border-radius: var(--fives-r-md);
  min-height: 44px;
  padding: 0 var(--fives-s-4);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--fives-t-quick) var(--fives-e-settle),
              background var(--fives-t-quick) var(--fives-e-settle),
              transform var(--fives-t-standard) var(--fives-e-rebound);
}
.sl-teach-nav:disabled { opacity: 0.35; cursor: default; }
.sl-teach-nav:not(:disabled):hover { border-color: var(--fives-accent); }
.sl-teach-fwd {
  background: var(--fives-primary);
  border-color: var(--fives-primary);
  color: var(--fives-bg);
}
.sl-teach-fwd:hover { background: var(--fives-primary-700); border-color: var(--fives-primary-700); }

.sl-teach-exit:focus-visible,
.sl-timer-btn:focus-visible,
.sl-teach-panel-btn:focus-visible,
.sl-teach-nav:focus-visible { outline: 2px solid var(--fives-accent); outline-offset: 2px; }

@media (max-width: 430px) {
  .sl-teach-inner { padding-left: calc(40px + var(--safe-left, 0px)); }
  .sl-teach-name { font-size: 32px; }
  .sl-teach-cue p {
    font-size: 19px;
    line-height: 27px;
    background-image: repeating-linear-gradient(
      to bottom,
      transparent 0, transparent 22px,
      var(--fives-rule) 22px, var(--fives-rule) 23px,
      transparent 23px, transparent 27px);
  }
  .sl-teach-next { display: none; }
  .sl-teach-regtabs svg { width: 108px; }

  .sl-teach-top { gap: var(--fives-s-2); }
  .sl-teach-count { min-width: 34px; }
}

.sl-printcard { display: none; }

@media print {
  @page { size: A4; margin: 18mm 16mm; }
  .sl-main > *:not(.sl-lesson),
  .sl-lesson > *:not(.sl-printcard),
  .sn-bar,
  nav, footer, .fn-bar, .fv-spine,
  .sl-lesson-actions {
    display: none !important;
  }
  body, .sl-main { background: #fff; }
  .sl-printcard {
    display: block;
    color: #000;
    font-family: var(--fives-body);
    font-size: 11pt;
  }
  .sl-print-head {
    border-bottom: 1.5pt solid #000;
    padding-bottom: 6pt;
    page-break-after: avoid;
  }
  .sl-print-head h1 { font-family: var(--fives-display); font-size: 18pt; margin: 2pt 0; }
  .sl-print-head p { margin: 0; font-size: 9pt; color: #444; }
  .sl-print-brand { font-size: 8pt; letter-spacing: 0.1em; text-transform: uppercase; color: #444; }
  .sl-print-row { display: flex; gap: 24pt; page-break-inside: avoid; }
  .sl-print-row h2 { font-size: 10pt; margin: 10pt 0 3pt; }
  .sl-print-row ul { margin: 0; padding-left: 12pt; font-size: 9.5pt; }
  .sl-print-table { width: 100%; border-collapse: collapse; margin-top: 10pt; }
  .sl-print-table tr { page-break-inside: avoid; }
  .sl-print-table th, .sl-print-table td {
    border: 0;
    border-bottom: 0.25pt solid #c9c9c9;
    padding: 4pt 8pt 4pt 0;
    font-size: 9.5pt;
    text-align: left;
    vertical-align: top;
  }
  .sl-print-table th { border-bottom: 0.5pt solid #000; font-size: 8pt; letter-spacing: 0.06em; text-transform: uppercase; }
  .sl-print-table td:first-child { white-space: nowrap; }
  .sl-print-foot { margin-top: 12pt; border-top: 0.5pt solid #000; padding-top: 6pt; page-break-inside: avoid; }
  .sl-print-foot p { margin: 0 0 3pt; font-size: 8.5pt; color: #444; }
}

.sl-pill-sealed {
  flex: 0 0 auto;
  font-family: var(--fives-mono);
  font-size: 11px; font-weight: 600; line-height: 15px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--fives-accent-700); background: var(--fives-bg-2);
  box-shadow: inset 0 0 0 1px var(--fives-line);
  border-radius: var(--fives-r-sm);
  padding: 3px 7px;
  white-space: nowrap;
}

.sl-ruled {
  display: block;
  height: 1px;
  background: var(--fives-line);
  border-radius: 1px;
}
.sl-sealed-blanks .sl-ruled,
.sl-sealed-page .sl-ruled { margin-bottom: calc(16px * 1.55 - 1px); }
.sl-sealed-blanks .sl-ruled:last-child,
.sl-sealed-page .sl-ruled:last-child { margin-bottom: 0; }

.sl-sealed-objectives li { align-items: flex-start; }
.sl-sealed-blanks { flex: 1 1 auto; min-width: 0; padding-top: 11px; }

.sl-sealed-kit { gap: var(--fives-s-3); }
.sl-sealed-kititem {
  display: flex;
  align-items: center;
  gap: var(--fives-s-3);
}
.sl-sealed-kititem input { position: absolute; opacity: 0; pointer-events: none; }
.sl-sealed-kititem .sl-ruled { flex: 0 1 auto; }

.sl-sealed-card {
  background: var(--fives-bg);
  border-radius: var(--fives-r-md);
  margin-bottom: var(--fives-s-5);
  grid-column: 1;
}
.sl-sealed-meta {
  font-family: var(--fives-mono);
  font-size: 12px; font-weight: 500; line-height: 16px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--fives-muted);
  margin: 0 0 var(--fives-s-2);
}

.sl-sealed-title {
  font-size: 22px;
  color: var(--fives-line);
  margin: 0 0 var(--fives-s-4);
  transition: color var(--fives-t-standard) var(--fives-e-settle);
}
.sl-sealed-title.is-inked { color: var(--fives-text); }
.sl-sealed-org {
  display: flex;
  align-items: center;
  gap: var(--fives-s-3);
  margin: 0 0 var(--fives-s-5);
}
.sl-sealed-orgtag {
  flex: 0 0 auto;
  font-family: var(--fives-mono);
  font-size: 11px; font-weight: 500; line-height: 16px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--fives-muted);
}
.sl-sealed-org .sl-ruled { flex: 1 1 auto; }

.sl-sealed-phases {
  max-width: 1080px;
  margin: var(--fives-s-6) auto 0;
  padding: 0 40px var(--fives-s-6);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 0 40px;
  align-items: start;
}
.sl-sealed-phases--after { margin-top: 0; padding-top: 44px; }

.sl-sealed-frontis {
  grid-column: 2;
  grid-row: 1;
  background: var(--fives-bg-2);
  border: 1px solid var(--fives-line);
  border-radius: var(--fives-r-md);
  padding: var(--fives-s-4) var(--fives-s-4) var(--fives-s-3);
}

@media (min-width: 981px) {
  .sl-sealed-frontis .sl-diagram { max-width: 100%; }
}
.sl-sealed-cap {
  font-family: var(--fives-mono);
  font-size: 11.5px; line-height: 1.45;
  color: var(--fives-muted);
  margin: var(--fives-s-3) 0 0;
}

.sl-seal {
  position: relative;
  background: var(--fives-bg-2);
  scroll-margin-top: calc(var(--fives-nav-h, calc(77px + var(--safe-top, 0px)))
                          + var(--fives-subbar-h, 0px));
}

.sl-seal-rule {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--fives-pen, var(--fives-text));
  transform-origin: left center;
  pointer-events: none;
  transition: transform var(--fives-t-gentle) var(--fives-e-draw);
}
html.fv-ink.fv-ink-armed .sl-seal-rule:not(.is-drawn) { transform: scaleX(0); }

.sl-seal-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 52px 40px 54px;
  text-align: center;
}
.sl-seal-mark {
  display: block;
  width: 38px;
  margin: 0 auto var(--fives-s-5);
  color: var(--fives-primary);
}
.sl-seal-mark svg { display: block; }
.sl-seal-title {
  font-family: var(--fives-display);
  font-size: clamp(24px, 3.4vw, 31px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 var(--fives-s-4);
}
.sl-seal-sub {
  font-size: 16px;
  line-height: 1.6;
  color: var(--fives-muted);
  max-width: 29em;
  margin: 0 auto var(--fives-s-6);
}
.sl-seal-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--fives-s-6);
  flex-wrap: wrap;
}
.sl-seal-link {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--fives-accent-700, var(--fives-accent));
  text-decoration: none;
  border-bottom: 1px solid var(--fives-accent);
  padding-bottom: 2px;
  transition: color var(--fives-t-quick) var(--fives-e-settle);
}
.sl-seal-link:hover { color: var(--fives-accent); }
.sl-seal-link:focus-visible { outline: 2px solid var(--fives-accent); outline-offset: 3px; }

.sl-sealed-foot {
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--fives-s-5) 40px 56px;
  border-top: 1px solid var(--fives-line);
}
.sl-sealed-foot p {
  font-family: var(--fives-mono);
  font-size: 12px; font-weight: 500; line-height: 16px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fives-muted);
  margin: 0;
}

@media (max-width: 980px) {
  .sl-grid { grid-template-columns: repeat(2, 1fr); }
  .sl-phase-cols { grid-template-columns: 1fr; }
  .sl-diagram { max-width: 260px; }
  .sl-sealed-phases { grid-template-columns: minmax(0, 1fr) 240px; gap: 0 24px; }
}

@media (max-width: 760px) {
  .sl-hero { padding: 48px 20px 16px; }

  .sl-band-inner {
    padding: 32px 20px;
    min-height: 220px;
    grid-template-columns: 1fr;
    column-gap: 0;
  }
  .sl-band .sl-h1 { font-size: 32px; }
  .sl-band-mark {
    position: absolute;
    width: 160px;
    right: -40px;
    top: -12px;
    margin-top: 0;
  }
  .sl-band-mark [data-ink="wall"],
  .sl-band-mark [data-ink="step"] { stroke-opacity: 0.4; }
  .sl-band-mark [data-ink="mark-fade"] rect { opacity: 0.25; }

  .sl-hero-meta { padding: 24px 20px 0; }

  .sl-grid { grid-template-columns: 1fr; padding: 16px 20px 32px; }
  .sl-crosslink-inner { padding: 48px 20px; }
  .sl-lesson-head,
  .sl-lesson-grid,
  .sl-phases-head,
  .sl-phases,
  .sl-wrapup,
  .sl-lesson-nav {
    padding-left: 20px;
    padding-right: 20px;
  }
  .sl-lesson-grid { grid-template-columns: 1fr; }
  .sl-phase { grid-template-columns: 1fr; gap: var(--fives-s-2); }
  .sl-phase-rail {
    border-right: none;
    border-bottom: 2px solid var(--fives-line);
    padding-bottom: var(--fives-s-1);
  }
  .sl-phase-time small { display: inline; margin-left: 4px; }
  .sl-coach { grid-template-columns: 1fr; }
  .sl-ticks-label { min-width: 100%; }

  .sl-ticks-row, .sl-ticks-bands { min-width: 0; }
  .sl-ticks-bands { width: 100%; flex-wrap: wrap; }
  .sl-ticks-cell { flex: 1 1 auto; padding-left: var(--fives-s-2); padding-right: var(--fives-s-2); }

  .sl-ticks-clear { margin-left: auto; }
  .sl-timer { flex-direction: row; }
  .sl-lesson-actions .sl-btn { flex: 1 1 auto; justify-content: center; }
  .sl-btn-print { display: none; }

  .sl-sealed-phases,
  .sl-sealed-phases--after {
    grid-template-columns: 1fr;
    gap: 0;
    padding-left: 20px;
    padding-right: 20px;
  }
  .sl-sealed-phases--after { padding-top: 30px; }
  .sl-sealed-card,
  .sl-sealed-frontis { grid-column: 1; }
  .sl-sealed-frontis {
    grid-row: auto;
    background: var(--fives-bg);
    border-top: 0;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    margin-bottom: var(--fives-s-5);

    padding: var(--fives-s-1) var(--fives-s-6) var(--fives-s-6);
  }
  .sl-sealed-card.has-frontis {
    margin-bottom: 0;
    border-bottom: 0;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    padding-bottom: var(--fives-s-2);
  }
  .sl-seal-inner { padding: 40px 20px 42px; }
  .sl-seal-cta { flex-direction: column; gap: var(--fives-s-5); }
  .sl-seal-cta .sl-btn { width: 100%; justify-content: center; }
  .sl-seal-link { display: inline-flex; align-items: center; min-height: 44px; }
  .sl-sealed-foot { padding-left: 20px; padding-right: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .sl-btn,
  .sl-card,
  .sl-card-open span,
  .sl-kit-box,
  .sl-kit-box svg,
  .sl-kit-item,
  .sl-kit-name,
  .sl-kit-name::after,
  .sl-ticks-cell,
  .sl-timer-btn,
  .sl-timer-arc,
  .sl-timer-arc.is-draining,
  .sl-sealed-title,
  .sl-seal-rule,
  .sl-seal-link,
  .sl-teach-panel,
  .sl-teach-panel-btn,
  .sk-ind-v,
  .sl-teach-nav,
  .sl-teach-register .sk-rg-base,
  .sl-teach-register .sk-rg-ink,
  .sl-teach-regtab,
  .sl-teach-regbtn,
  .sl-sheet-row,
  .sl-ring circle {
    transition: none !important;
    animation: none !important;
  }

  .sl-sheet,
  .sl-sheet-root.is-out .sl-sheet {
    animation: none !important;
    transform: none !important;
  }
  .sl-sheet-scrim,
  .sl-sheet-root.is-out .sl-sheet-scrim {
    animation: none !important;
    opacity: 1 !important;
  }
  .sl-card:hover { transform: none; }

  .sl-sealed-title { color: var(--fives-text) !important; }
  .sl-seal-rule { transform: none !important; }

  .sl-teach-inner,
  .sl-teach-inner.is-out,
  .sl-teach-inner.is-out-back,
  .sl-teach-inner.is-in,
  .sl-teach-inner.is-in-back {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .sl-teach-panel-list li,
  .sl-teach-panel-list.is-opening li,
  .sl-teach-panel-list.is-closing li,
  .sk-flip-val,
  .sk-flip-val.is-in,
  .sk-flip-val.is-out,
  .sl-kit-done.is-flash,
  .sl-ticks-cell.is-flash {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

html.fv-rm .sl-kit-name,
html.fv-rm .sl-kit-name::after,
html.fv-rm .sl-timer-arc,
html.fv-rm .sl-timer-arc.is-draining,
html.fv-rm .sl-teach-panel,
html.fv-rm .sl-teach-panel-btn,
html.fv-rm .sl-sealed-title,
html.fv-rm .sl-seal-rule,
html.fv-rm .sk-ind-v {
  transition: none !important;
}
html.fv-rm .sl-sealed-title { color: var(--fives-text) !important; }
html.fv-rm .sl-seal-rule { transform: none !important; }
html.fv-rm .sl-teach-panel-list li,
html.fv-rm .sk-flip-val,
html.fv-rm .sl-kit-done.is-flash,
html.fv-rm .sl-ticks-cell.is-flash {
  animation: none !important;
  opacity: 1 !important;
  transform: none !important;
}

.sl-picker { position: relative; max-width: 1240px; margin: 0 auto; }
.sl-picker-margin { left: 8px; }

.sl-phase-rail { position: relative; border-right: none; }
.sl-phase-margin { right: 0; }

.sl-card-crumb,
.sl-card-meta,
.sl-crumbs,
.sl-lesson-meta,
.sl-phase-time,
.sl-phase-n,
.sl-ticks-band,
.sl-cue-tag,
.sl-tip-tag,
.sl-h4,
.sl-diffext-h,
.sl-ring-n {
  font-family: var(--fives-mono);
  font-weight: 500;
  letter-spacing: 0.12em;
}
.sl-card-crumb  { font-size: 12px; line-height: 16px; }
.sl-card-meta   { font-size: 12px; line-height: 16px; }
.sl-crumbs      { font-size: 12px; line-height: 16px; }
.sl-lesson-meta { font-size: 12px; line-height: 16px; }
.sl-ticks-band  { font-size: 12px; line-height: 16px; }
.sl-ring-n {
  font-size: 11px; line-height: 14px; letter-spacing: 0.06em;
  color: var(--fives-accent);
}

.sl-pill-draft,
.sl-pill-taught,
.sl-vocab-chip {
  font-family: var(--fives-mono);
  font-size: 13px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 0.12em;
}

.sl-vocab-chip { text-transform: none; letter-spacing: 0.06em; }

.sl-card { border-width: 1px; }
.sl-card-open { color: var(--fives-accent); }
.sl-crosslink { border-top-width: 1px; }

.sl-phase-body { border-width: 1px; }
.sl-block      { border-width: 1px; }
.sl-phase-time {
  font-size: 12px;
  line-height: 16px;
  font-weight: 500;
  color: var(--fives-accent-700);
}
.sl-phase-time small {
  font-family: var(--fives-mono);
  font-size: 11px;
  line-height: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fives-muted);
}
.sl-phase-n { font-size: 12px; line-height: 16px; color: var(--fives-accent); }

.sl-cue {
  background: var(--fives-bg-2);
  border-left-width: 4px;
}
.sl-cue-tag {
  display: block;
  font-size: 12px;
  line-height: 16px;
  color: var(--fives-accent);
}
.sl-cue p {
  font-size: 16px;
  line-height: 26px;
  font-weight: 500;
  margin-top: var(--fives-s-2);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0, transparent 20px,
    var(--fives-rule) 20px, var(--fives-rule) 21px,
    transparent 21px, transparent 26px);
}

.sl-h4,
.sl-diffext-h {
  font-size: 12px;
  line-height: 16px;
  font-weight: 500;
  color: var(--fives-accent-700);
}
.sl-diffext { border-top-width: 1px; }

.sl-tip-tag {
  display: block;
  font-size: 12px;
  line-height: 16px;
  color: var(--fives-accent-700);
}
.sl-tip { border-left-color: var(--fives-margin, var(--fives-line)); }

.sl-kit-box {
  position: relative;
  width: 22px;
  height: 22px;
  border-width: 1px;
  border-radius: var(--fives-r-sm);
  background: var(--fives-bg);
}

.sl-kit-item.is-checked .sl-kit-box {
  background: var(--fives-bg);
  border-color: var(--fives-line);
}

.sl-kit-item input:focus-visible ~ .sl-kit-box {
  outline: 2px solid var(--fives-accent);
  outline-offset: 2px;
}

.sl-kit-item { min-height: 44px; }

.sl-btn-taught { position: relative; }
.sl-btn-taught.is-on {
  background: transparent;
  color: var(--fives-accent-700);
  border-color: var(--fives-accent);
}

.sl-ticks-cell { position: relative; }
.sl-ticks-mark {
  position: absolute;
  bottom: 3px;
  right: 4px;
  width: 14px;
  height: 14px;
  pointer-events: none;
}
.sl-ticks-count { color: var(--fives-accent-700); }

.sl-crumbs a,
.sl-inline-teach,
.sl-lesson-nav-link,
.sl-card-open { color: var(--fives-accent); }
.sl-crumbs .is-current { color: var(--fives-text); }

.sl-kit-reset,
.sl-inline-teach,
.sl-lesson-nav-link,
.sl-crumbs a { position: relative; }
.sl-kit-reset::after,
.sl-inline-teach::after,
.sl-lesson-nav-link::after,
.sl-crumbs a::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: max(100%, 44px);
  height: max(100%, 44px);
}

.sl-ticks-clear {
  width: 44px;
  height: 44px;
  padding: 0;
  display: grid;
  place-items: center;
}

@media (max-width: 760px) {

  .sl-picker-margin { left: 0; }

  .sl-phase-margin { display: none; }
  .sl-phase-rail { border-bottom: 1px solid var(--fives-margin); }
  .sl-cue p {
    font-size: 15px;
    line-height: 24px;
    background-image: repeating-linear-gradient(
      to bottom,
      transparent 0, transparent 18px,
      var(--fives-rule) 18px, var(--fives-rule) 19px,
      transparent 19px, transparent 24px);
  }
}