:root {
  --st-bg: #0b0e14;
  --st-rail: #0e121a;
  --st-surface: #131822;
  --st-surface-2: #181e2b;
  --st-surface-3: #1e2534;
  --st-border: rgba(255, 255, 255, 0.06);
  --st-border-strong: rgba(255, 255, 255, 0.12);
  --st-text: #eceef3;
  --st-text-2: #9aa1b2;
  --st-text-3: #667085;
  --st-accent: #e5a967;
  --st-accent-soft: rgba(229, 169, 103, 0.12);
  --st-ok: #6bc4a6;
  --st-ok-soft: rgba(107, 196, 166, 0.12);
  --st-warn: #e0b45c;
  --st-radius: 12px;
  --st-radius-sm: 8px;
  --st-radius-pill: 999px;
  --st-rail-w: 248px;
  --st-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

html[data-theme="light"] {
  --st-bg: #f4f2ec;
  --st-rail: #ece9e0;
  --st-surface: #fbfaf6;
  --st-surface-2: #f3f0e7;
  --st-surface-3: #e8e4d8;
  --st-border: rgba(20, 22, 28, 0.08);
  --st-border-strong: rgba(20, 22, 28, 0.16);
  --st-text: #1b1d22;
  --st-text-2: #555a66;
  --st-text-3: #8a8f9b;
  --st-accent: #b8742c;
  --st-accent-soft: rgba(184, 116, 44, 0.12);
  --st-ok: #2d8a6b;
  --st-ok-soft: rgba(45, 138, 107, 0.12);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--st-font);
  background: var(--st-bg);
  color: var(--st-text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  font-size: 14px;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  color: inherit;
}

.hidden {
  display: none !important;
}

.st-app {
  display: grid;
  grid-template-columns: var(--st-rail-w) 1fr;
  min-height: 100vh;
}

.st-rail {
  background: var(--st-rail);
  border-right: 1px solid var(--st-border);
  padding: 22px 16px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.st-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px;
}

.st-brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--st-accent-soft);
  color: var(--st-accent);
  display: grid;
  place-items: center;
}

.st-brand-name {
  font-weight: 650;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.st-brand-tag {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--st-text-3);
}

.st-show-switch {
  background: var(--st-surface);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.st-show-switch label {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--st-text-3);
}

.st-select,
.st-input,
.st-textarea {
  width: 100%;
  background: var(--st-surface-2);
  color: var(--st-text);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-sm);
  padding: 9px 11px;
  font: inherit;
  outline: none;
  transition: border-color 0.15s ease;
}

.st-select:focus,
.st-input:focus,
.st-textarea:focus {
  border-color: var(--st-border-strong);
}

.st-textarea {
  resize: vertical;
  min-height: 84px;
}

.st-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.st-nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 11px;
  border-radius: var(--st-radius-sm);
  color: var(--st-text-2);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 13.5px;
  transition: background 0.12s ease, color 0.12s ease;
}

.st-nav-item:hover {
  background: var(--st-surface);
  color: var(--st-text);
}

.st-nav-item.active {
  background: var(--st-surface-2);
  color: var(--st-text);
}

.st-nav-item.active svg {
  color: var(--st-accent);
}

.st-rail-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.st-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.st-demo-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 10px 32px;
  background: var(--st-accent-soft);
  border-bottom: 1px solid var(--st-border);
  color: var(--st-text);
  font-size: 13px;
}

.st-demo-banner strong {
  color: var(--st-accent);
  font-weight: 600;
}

.st-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 32px 6px;
  flex-wrap: wrap;
}

.st-page-title {
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.st-page-sub {
  color: var(--st-text-2);
  font-size: 13px;
  margin-top: 2px;
}

.st-content {
  padding: 18px 32px 56px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 1180px;
  width: 100%;
}

.st-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border-radius: var(--st-radius-pill);
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  color: var(--st-text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, transform 0.08s ease;
}

.st-btn:hover {
  background: var(--st-surface-3);
  border-color: var(--st-border-strong);
}

.st-btn:active {
  transform: scale(0.98);
}

.st-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.st-btn-primary {
  background: var(--st-accent);
  border-color: var(--st-accent);
  color: #17120a;
}

.st-btn-primary:hover {
  background: var(--st-accent);
  filter: brightness(1.06);
  border-color: var(--st-accent);
}

.st-btn-sm {
  padding: 5px 11px;
  font-size: 12px;
}

.st-btn-ghost {
  background: none;
  border-color: transparent;
  color: var(--st-text-2);
}

.st-card {
  background: var(--st-surface);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.st-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.st-card-title {
  font-size: 15px;
  font-weight: 600;
}

.st-card-sub {
  color: var(--st-text-2);
  font-size: 12.5px;
  margin-top: 2px;
}

.st-grid {
  display: grid;
  gap: 16px;
}

.st-grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
}

.st-grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.st-grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.st-overview-hero {
  display: grid;
  grid-template-columns: 148px 1fr;
  gap: 22px;
  align-items: center;
}

.st-cover {
  width: 148px;
  height: 148px;
  border-radius: var(--st-radius);
  object-fit: cover;
  background: var(--st-surface-3);
  border: 1px solid var(--st-border);
}

.st-cover-fallback {
  display: grid;
  place-items: center;
  color: var(--st-accent);
  font-size: 44px;
  font-weight: 650;
}

.st-hero-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.st-hero-title {
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.st-hero-host {
  color: var(--st-text-2);
}

.st-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.st-chip {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: var(--st-radius-pill);
  background: var(--st-surface-3);
  color: var(--st-text-2);
}

.st-chip-ok {
  background: var(--st-ok-soft);
  color: var(--st-ok);
}

.st-chip-accent {
  background: var(--st-accent-soft);
  color: var(--st-accent);
}

.st-copy-row {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-sm);
  padding: 6px 6px 6px 12px;
}

.st-copy-label {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--st-text-3);
  flex-shrink: 0;
  width: 54px;
}

.st-copy-value {
  flex: 1;
  min-width: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--st-text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.st-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.st-stat-label {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--st-text-3);
}

.st-stat-value {
  font-size: 26px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.st-stat-note {
  font-size: 12px;
  color: var(--st-text-2);
}

.st-stat-ok {
  color: var(--st-ok);
}

.st-table {
  width: 100%;
  border-collapse: collapse;
}

.st-table th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--st-text-3);
  font-weight: 500;
  padding: 8px 10px;
  border-bottom: 1px solid var(--st-border);
}

.st-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--st-border);
  vertical-align: middle;
}

.st-table tr:last-child td {
  border-bottom: none;
}

.st-table tbody tr:hover td {
  background: var(--st-surface-2);
}

.st-table-wrap {
  overflow-x: auto;
}

.st-ep-title {
  font-weight: 550;
}

.st-ep-sub {
  font-size: 12px;
  color: var(--st-text-3);
}

.st-num {
  font-variant-numeric: tabular-nums;
  color: var(--st-text-2);
  white-space: nowrap;
}

.st-actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.st-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 140px;
  padding-top: 8px;
}

.st-bar {
  flex: 1;
  background: var(--st-accent-soft);
  border-top: 2px solid var(--st-accent);
  border-radius: 4px 4px 0 0;
  min-height: 4px;
}

.st-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--st-text-3);
}

.st-cost-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.st-cost-box {
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-sm);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.st-cost-box.win {
  border-color: var(--st-ok);
  background: var(--st-ok-soft);
}

.st-cost-amount {
  font-size: 24px;
  font-weight: 650;
}

.st-dist-card {
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.st-dist-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.st-dist-logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 15px;
  color: #fff;
  flex-shrink: 0;
}

.st-dist-name {
  font-weight: 600;
}

.st-dist-hint {
  font-size: 12px;
  color: var(--st-text-2);
}

.st-dist-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.st-progress {
  height: 6px;
  background: var(--st-surface-3);
  border-radius: var(--st-radius-pill);
  overflow: hidden;
}

.st-progress-fill {
  height: 100%;
  width: 0;
  background: var(--st-accent);
  transition: width 0.2s ease;
}

.st-share-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.st-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.st-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.st-field.full {
  grid-column: 1 / -1;
}

.st-field label {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--st-text-3);
}

.st-dropzone {
  border: 1.5px dashed var(--st-border-strong);
  border-radius: var(--st-radius);
  padding: 30px 20px;
  text-align: center;
  background: var(--st-surface-2);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.st-dropzone:hover,
.st-dropzone.over {
  border-color: var(--st-accent);
  background: var(--st-accent-soft);
}

.st-wave {
  position: relative;
  height: 76px;
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-sm);
  padding: 8px 10px;
  display: flex;
  align-items: flex-end;
  gap: 2px;
  cursor: pointer;
  overflow: hidden;
}

.st-wave-bar {
  flex: 1;
  min-width: 2px;
  background: var(--st-text-3);
  opacity: 0.45;
  border-radius: 2px;
}

.st-wave-bar.talk {
  background: var(--st-ok);
  opacity: 0.9;
}

.st-wave-bar.music {
  background: var(--st-accent);
  opacity: 0.9;
}

.st-wave-bar.played {
  opacity: 1;
  filter: brightness(1.25);
}

.st-chapter-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 200px;
  overflow-y: auto;
}

.st-chapter {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 10px;
  border-radius: var(--st-radius-sm);
  background: var(--st-surface-2);
  cursor: pointer;
  font-size: 13px;
}

.st-chapter:hover {
  background: var(--st-surface-3);
}

.st-code {
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-sm);
  padding: 12px 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--st-text-2);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.st-embed-preview {
  width: 100%;
  height: 230px;
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius);
  background: var(--st-surface-2);
}

.st-dialog {
  background: var(--st-surface);
  color: var(--st-text);
  border: 1px solid var(--st-border-strong);
  border-radius: var(--st-radius);
  padding: 26px;
  width: min(480px, calc(100vw - 32px));
  margin: auto;
}

.st-dialog::backdrop {
  background: rgba(5, 7, 10, 0.6);
  backdrop-filter: blur(6px);
}

.st-dialog-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.st-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 12px);
  background: var(--st-surface-3);
  border: 1px solid var(--st-border-strong);
  padding: 10px 18px;
  border-radius: var(--st-radius-pill);
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 50;
}

.st-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.st-timeline-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--st-surface);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius);
  padding: 16px;
  position: relative;
  overflow: hidden;
}

.st-timeline-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--st-border);
}

.st-transport {
  display: flex;
  align-items: center;
  gap: 8px;
}

.st-btn-play {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--st-accent);
  color: #12151c;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(229, 169, 103, 0.25);
  transition: transform 0.12s ease, opacity 0.12s ease;
}

.st-btn-play:hover {
  opacity: 0.94;
  transform: scale(1.04);
}

.st-timecode {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  padding: 6px 12px;
  border-radius: var(--st-radius-sm);
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  color: var(--st-text);
  letter-spacing: 0.04em;
}

.st-timeline-stage {
  display: grid;
  grid-template-columns: 210px 1fr;
  position: relative;
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-sm);
  overflow: hidden;
  user-select: none;
}

.st-stage-left {
  background: var(--st-rail);
  border-right: 1px solid var(--st-border);
  display: flex;
  flex-direction: column;
  z-index: 5;
}

.st-stage-corner {
  height: 38px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  font-size: 11px;
  font-weight: 600;
  color: var(--st-text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--st-border);
}

.st-stage-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  position: relative;
}

.st-timeline-ruler-wrap {
  height: 38px;
  background: var(--st-surface-3);
  border-bottom: 1px solid var(--st-border);
  position: relative;
  cursor: pointer;
}

.st-timeline-ruler {
  height: 100%;
  position: relative;
}

.st-ruler-tick {
  position: absolute;
  top: 0;
  bottom: 0;
  border-left: 1px solid var(--st-border);
  padding-left: 6px;
  font-size: 10px;
  font-family: ui-monospace, monospace;
  color: var(--st-text-3);
  display: flex;
  align-items: center;
  pointer-events: none;
}

.st-ch-flag {
  position: absolute;
  top: 2px;
  height: 20px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--st-surface);
  border: 1px solid var(--st-accent);
  color: var(--st-accent);
  font-size: 10px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  white-space: nowrap;
  transform: translateX(-50%);
  z-index: 8;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.st-ch-flag:hover {
  background: var(--st-accent);
  color: #12151c;
}

.st-track-head {
  height: 94px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--st-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.st-track-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.st-track-badge {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}

.st-track-name {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--st-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.st-track-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.st-track-btn-mute,
.st-track-btn-solo {
  width: 22px;
  height: 22px;
  padding: 0;
  font-size: 10px;
  font-weight: 700;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--st-border);
  background: var(--st-surface-2);
  color: var(--st-text-3);
  cursor: pointer;
}

.st-track-btn-mute.active {
  background: #f87171;
  color: #ffffff;
  border-color: #f87171;
}

.st-track-btn-solo.active {
  background: #e5a967;
  color: #12151c;
  border-color: #e5a967;
}

.st-vol-slider {
  flex: 1;
  height: 4px;
  accent-color: var(--st-accent);
  cursor: pointer;
}

.st-track-lane {
  height: 94px;
  position: relative;
  border-bottom: 1px solid var(--st-border);
  background-image: linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 55px 100%;
}

.st-clip-block {
  position: absolute;
  top: 8px;
  height: 78px;
  border-radius: 8px;
  background: var(--st-surface-3);
  border: 1px solid var(--st-border-strong);
  overflow: hidden;
  cursor: grab;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.12s ease, border-color 0.12s ease;
  user-select: none;
}

.st-clip-block:active {
  cursor: grabbing;
}

.st-clip-block.selected {
  border-color: var(--st-accent);
  box-shadow: 0 0 0 1px var(--st-accent), 0 4px 14px rgba(0, 0, 0, 0.4);
}

.st-clip-head {
  height: 22px;
  padding: 0 8px;
  font-size: 10.5px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.28);
  color: var(--st-text-2);
  pointer-events: none;
}

.st-clip-wave {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 4px;
  pointer-events: none;
}

.st-clip-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.st-clip-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 8px;
  background: transparent;
  cursor: col-resize;
  z-index: 4;
}

.st-clip-handle:hover,
.st-clip-handle:active {
  background: rgba(229, 169, 103, 0.4);
}

.st-clip-handle-l {
  left: 0;
  border-top-left-radius: 8px;
  border-bottom-left-radius: 8px;
}

.st-clip-handle-r {
  right: 0;
  border-top-right-radius: 8px;
  border-bottom-right-radius: 8px;
}

.st-timeline-playhead {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #ffffff;
  z-index: 10;
  pointer-events: none;
  transform: translateX(-50%);
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.6);
}

.st-playhead-cap {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 16px;
  background: #ffffff;
  clip-path: polygon(0% 0%, 100% 0%, 100% 60%, 50% 100%, 0% 60%);
  pointer-events: auto;
  cursor: ew-resize;
}

.st-asset-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  background: var(--st-surface-2);
  border: 1px solid var(--st-border);
  border-radius: var(--st-radius-sm);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.st-asset-card:hover {
  border-color: var(--st-border-strong);
  background: var(--st-surface-3);
}

.st-asset-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.st-asset-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--st-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.st-asset-desc {
  font-size: 11px;
  color: var(--st-text-3);
}

.st-punch-recording {
  animation: st-punch-pulse 1.4s ease-in-out infinite alternate;
}

@keyframes st-punch-pulse {
  from {
    border-color: #ef4444;
    box-shadow: 0 0 0 1px #ef4444;
  }
  to {
    border-color: #b91c1c;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
  }
}

.st-mobile-nav {
  display: none;
}

@media (max-width: 880px) {
  .st-app {
    grid-template-columns: 1fr;
  }

  .st-rail {
    display: none;
  }

  .st-topbar,
  .st-content,
  .st-demo-banner {
    padding-left: 18px;
    padding-right: 18px;
  }

  .st-content {
    padding-bottom: 96px;
  }

  .st-overview-hero {
    grid-template-columns: 1fr;
  }

  .st-cost-compare {
    grid-template-columns: 1fr;
  }

  .st-mobile-nav {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--st-rail);
    border-top: 1px solid var(--st-border);
    padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
    justify-content: space-around;
    z-index: 20;
  }

  .st-mobile-nav .st-nav-item {
    flex-direction: column;
    gap: 3px;
    font-size: 10.5px;
    padding: 6px 8px;
  }
}