#mode-sst {
  --sst-accent: #235e92;
  --sst-accent-soft: #eef6fd;
  --sst-border: #d8e2ee;
  --sst-text: #182536;
  --sst-muted: #5f6f82;
  --sst-danger: #c81e3a;
  --sst-success: #12723d;
  background: #fff;
  color: var(--sst-text);
  padding: 12px 0 32px;
}

.sst-nav {
  max-width: 1160px;
  margin: 0 auto 20px;
  padding: 0 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.sst-question-select {
  max-width: min(540px, 62vw);
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--sst-border);
  border-radius: 10px;
  background: #fff;
  color: var(--sst-text);
}

.sst-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 12px;
}

.sst-instructions {
  margin: 0 0 26px;
  font-size: 1.08rem;
  line-height: 1.7;
  font-weight: 600;
}

.sst-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--sst-border);
  padding: 18px 0 14px;
}

.sst-title-row h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.sst-timer {
  color: var(--sst-danger);
  font-size: 1.08rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.sst-timer.is-warning {
  animation: sst-timer-pulse 1s linear infinite;
}

@keyframes sst-timer-pulse {
  50% { opacity: 0.5; }
}

.sst-audio {
  width: min(470px, 100%);
  margin: 6px auto 20px;
  padding: 22px 24px;
  border-radius: 8px;
  background: var(--sst-accent);
  color: #fff;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
}

.sst-play-btn {
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
  min-height: 44px;
  padding: 0 14px 0 9px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.sst-play-btn:disabled {
  opacity: 0.52;
  cursor: not-allowed;
}

.sst-progress {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.34);
}

.sst-progress-wrap {
  position: relative;
}

.sst-progress-fill {
  width: 0;
  height: 100%;
  background: #fff;
  border-radius: inherit;
}

.sst-seek {
  position: absolute;
  inset: -12px 0;
  width: 100%;
  height: 32px;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.sst-seek:disabled {
  pointer-events: none;
}

.sst-progress-wrap:focus-within .sst-progress {
  outline: 2px solid #fff;
  outline-offset: 4px;
}

.sst-audio-time {
  font-size: 0.86rem;
  font-variant-numeric: tabular-nums;
}

.sst-volume-label {
  grid-column: 1 / 2;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.88);
}

.sst-volume {
  grid-column: 2 / 4;
  accent-color: #fff;
}

.sst-status {
  margin: 10px 0 16px;
  color: var(--sst-muted);
  font-size: 0.92rem;
}

.sst-status.is-error {
  color: var(--sst-danger);
}

.sst-response-label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
}

.sst-response {
  box-sizing: border-box;
  width: 100%;
  min-height: 208px;
  resize: vertical;
  padding: 16px;
  border: 1px solid #9ba8b8;
  border-radius: 4px;
  font: inherit;
  line-height: 1.55;
  color: var(--sst-text);
}

.sst-response:focus {
  outline: 2px solid rgba(35, 94, 146, 0.2);
  border-color: var(--sst-accent);
}

.sst-meta {
  margin: 10px 0 18px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-weight: 600;
}

.sst-target {
  color: var(--sst-muted);
}

.sst-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 16px;
}

.sst-results {
  border-top: 1px solid var(--sst-border);
  padding-top: 16px;
}

.sst-results:empty {
  border-top: 0;
  padding-top: 0;
}

.sst-submitted,
.sst-points,
.sst-advice {
  margin: 0 0 16px;
  padding: 14px 16px;
  border-radius: 8px;
  background: var(--sst-accent-soft);
}

.sst-submitted h3,
.sst-points h3,
.sst-advice h3 {
  font-size: 1rem;
  margin: 0 0 8px;
}

.sst-submitted p,
.sst-advice p {
  margin: 0;
  white-space: pre-line;
}

.sst-score-summary {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 14px;
  font-weight: 700;
}

.sst-score-total {
  color: var(--sst-accent);
  font-size: 1.7rem;
}

.sst-score-grid {
  margin-bottom: 16px;
}

.sst-score-row {
  display: grid;
  grid-template-columns: 152px 62px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--sst-border);
  align-items: start;
}

.sst-score-badge {
  font-weight: 700;
  color: var(--sst-accent);
}

.sst-score-detail {
  color: var(--sst-muted);
  font-size: 0.92rem;
}

.sst-points ul {
  margin: 6px 0 0 20px;
  padding: 0;
}

.sst-points li {
  margin-bottom: 5px;
}

@media (max-width: 640px) {
  .sst-instructions {
    font-size: 0.98rem;
  }

  .sst-audio {
    grid-template-columns: auto 1fr;
  }

  .sst-audio-time {
    grid-column: 1 / -1;
    justify-self: end;
  }

  .sst-volume-label {
    grid-column: 1 / 2;
  }

  .sst-volume {
    grid-column: 2 / 3;
  }

  .sst-meta {
    flex-direction: column;
  }

  .sst-score-row {
    grid-template-columns: 1fr auto;
  }

  .sst-score-detail {
    grid-column: 1 / -1;
  }
}