/* Shared demo-stage primitives. Each study styles under its own prefix. */

.demo-center {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 260px;
}

.demo-stack {
  flex-direction: column;
  gap: 26px;
  text-align: center;
}

.demo-note {
  max-width: 46ch;
  color: var(--stage-muted);
  font-size: 12px;
  line-height: 1.65;
}

.demo-button {
  padding: 18px 36px;
  border: 0;
  border-radius: 18px;
  background: var(--stage-ink);
  color: var(--stage);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
  will-change: transform;
}

.demo-button:hover {
  background: #ffffff;
}

.demo-press {
  min-width: 168px;
}

.demo-switch-row {
  display: flex;
  align-items: center;
  gap: 18px;
}

.demo-switch {
  position: relative;
  width: 88px;
  height: 50px;
  padding: 5px;
  border: 0;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.18);
  transition: background-color var(--dur-3) var(--ease-standard);
}

.demo-switch[aria-checked="true"] {
  background: #30d158;
}

.demo-switch-thumb {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  will-change: transform;
}

.demo-state {
  min-width: 2ch;
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 14px;
}

/* Container transform mini demo */
.ct-scene {
  position: relative;
  display: grid;
  place-items: center;
  width: min(580px, 100%);
  height: min(440px, 100%);
  min-height: 340px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(110% 100% at 50% 0%, rgba(255, 255, 255, 0.06), transparent 65%),
    rgba(255, 255, 255, 0.02);
}

.ct-scene-label {
  position: absolute;
  top: 18px;
  left: 20px;
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.ct-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  width: min(270px, 72%);
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  background: var(--stage-ink);
  color: var(--stage);
  text-align: left;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  transition: transform var(--dur-3) var(--ease-out);
}

.ct-card:hover {
  transform: translateY(-3px);
}

.ct-thumb {
  width: 100%;
  height: 112px;
  border-radius: 10px;
  background: linear-gradient(135deg, #5e5ce6, #64d2ff);
}

.ct-card-title {
  margin-top: 4px;
  font-size: 16px;
  font-weight: 600;
}

.ct-card-hint {
  font-size: 11px;
  opacity: 0.55;
}

.ct-panel {
  position: absolute;
  inset: 10%;
  z-index: 2;
  overflow: hidden;
  border-radius: 22px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  transform-origin: center;
  will-change: transform;
}

.ct-panel-inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  padding: clamp(20px, 4vw, 40px);
}

.ct-kicker {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.ct-panel-title {
  margin-top: 10px;
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: -0.03em;
}

.ct-panel-text {
  max-width: 44ch;
  margin-top: 12px;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.65;
}

.ct-close {
  align-self: flex-start;
  margin-top: 22px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--surface-2);
  font-size: 13px;
  transition: border-color var(--dur-2);
}

.ct-close:hover {
  border-color: var(--line-strong);
}

@media (max-width: 640px) {
  .ct-scene {
    min-height: 300px;
  }

  .ct-panel {
    inset: 6%;
  }
}

/* Magnetic button */
.mb-zone {
  position: relative;
  display: grid;
  place-items: center;
  width: min(440px, 100%);
  height: 300px;
  border-radius: var(--r-lg);
}

.mb-ring {
  position: absolute;
  width: calc(var(--radius, 130px) * 2);
  height: calc(var(--radius, 130px) * 2);
  border: 1px dashed rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--dur-2) var(--ease-standard);
  pointer-events: none;
}

.mb-zone.is-near .mb-ring {
  opacity: 1;
}

.mb-button {
  transform: translate3d(var(--mx, 0), var(--my, 0), 0);
  will-change: transform;
}

.mb-label {
  display: inline-block;
  transform: translate3d(var(--mx, 0), var(--my, 0), 0);
}

/* Ripple */
.ripple-surface {
  position: relative;
  display: grid;
  place-items: center;
  width: min(380px, 100%);
  height: 190px;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--stage-ink);
  color: var(--stage);
  cursor: pointer;
  user-select: none;
}

.ripple-label {
  position: relative;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 113, 227, 0.36);
  pointer-events: none;
}

/* Checkbox */
.cb-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 22px;
  border: 1px solid var(--stage-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--stage-ink);
  font-size: 15px;
  transition: background-color var(--dur-2);
}

.cb-row:hover {
  background: rgba(255, 255, 255, 0.07);
}

.cb-box {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1.5px solid rgba(255, 255, 255, 0.34);
  border-radius: 9px;
  transition: background-color var(--dur-2), border-color var(--dur-2);
  will-change: transform;
}

.cb-row.is-checked .cb-box {
  border-color: #30d158;
  background: #30d158;
}

.cb-svg {
  width: 24px;
  height: 21px;
}

.cb-check {
  stroke: #101012;
}

/* Input validation */
.iv-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: min(430px, 100%);
}

.iv-field {
  will-change: transform;
}

.iv-input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--stage-line);
  border-radius: 14px;
  outline: none;
  background: rgba(255, 255, 255, 0.06);
  color: var(--stage-ink);
  font-size: 15px;
  transition: border-color var(--dur-2), background-color var(--dur-2);
}

.iv-input::placeholder {
  color: rgba(255, 255, 255, 0.34);
}

.iv-field.is-error .iv-input {
  border-color: #ff453a;
  background: rgba(255, 69, 58, 0.08);
}

.iv-field.is-success .iv-input {
  border-color: #30d158;
}

.iv-message {
  min-height: 20px;
  margin-top: 8px;
  color: #ff8a80;
  font-size: 12.5px;
  line-height: 1.5;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--dur-2), transform var(--dur-2) var(--ease-out);
}

.iv-field.is-error .iv-message,
.iv-field.is-success .iv-message {
  opacity: 1;
  transform: none;
}

.iv-field.is-success .iv-message {
  color: #69d98c;
}

.iv-submit {
  align-self: flex-start;
  padding: 11px 20px;
  border: 0;
  border-radius: var(--r-pill);
  background: var(--stage-ink);
  color: var(--stage);
  font-size: 14px;
  font-weight: 600;
}

/* View transition demo */
.vt-scene {
  position: relative;
  width: min(580px, 100%);
  height: min(460px, 100%);
  min-height: 350px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.vt-card {
  position: absolute;
  top: 26px;
  left: 50%;
  display: flex;
  flex-direction: column;
  width: 230px;
  height: 260px;
  padding: 12px;
  overflow: hidden;
  border-radius: 18px;
  background: var(--stage-ink);
  color: var(--stage);
  box-shadow: 0 22px 54px rgba(0, 0, 0, 0.44);
  cursor: pointer;
  view-transition-name: vt-demo-card;
  translate: -50% 0;
  transform: none;
}

.vt-card.is-expanded {
  top: 7%;
  left: 6%;
  width: 88%;
  height: 72%;
  border-radius: 22px;
  translate: 0 0;
  transform: none;
}

.vt-thumb {
  display: grid;
  place-items: center;
  width: 100%;
  height: 140px;
  border-radius: 12px;
  background: linear-gradient(135deg, #5e5ce6, #64d2ff);
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.vt-card.is-expanded .vt-thumb {
  height: 46%;
}

.vt-info {
  padding-top: 12px;
}

.vt-title {
  font-size: 18px;
  letter-spacing: -0.02em;
}

.vt-text {
  margin-top: 6px;
  color: var(--ink-2);
  font-size: 12.5px;
  line-height: 1.55;
}

.vt-actions {
  position: absolute;
  bottom: 20px;
  left: 50%;
  z-index: 2;
  transform: translateX(-50%);
}

.vt-status {
  position: absolute;
  right: 18px;
  bottom: 20px;
  max-width: 52%;
  color: var(--stage-muted);
  font-size: 10.5px;
  line-height: 1.45;
  text-align: right;
}

.vt-actions .lab-button {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.1);
  color: var(--stage-ink);
}

/* Tabs */
.ti-card {
  width: min(540px, 100%);
  padding: 18px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.ti-bar {
  position: relative;
  display: flex;
  gap: 4px;
  padding: 4px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
}

.ti-indicator {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 0;
  width: 0;
  border-radius: 10px;
  background: var(--stage-ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.28);
  will-change: left, width;
}

.ti-tab {
  position: relative;
  z-index: 1;
  flex: 1;
  padding: 9px 10px;
  border: 0;
  border-radius: 10px;
  background: none;
  color: rgba(255, 255, 255, 0.56);
  font-size: 13px;
  transition: color var(--dur-2) var(--ease-standard);
}

.ti-tab[aria-selected="true"] {
  color: var(--stage);
}

.ti-panel {
  min-height: 128px;
  margin-top: 16px;
}

.ti-content {
  padding: 8px 10px;
}

.ti-title {
  color: var(--stage-ink);
  font-size: 21px;
  letter-spacing: -0.02em;
}

.ti-body {
  margin-top: 8px;
  color: var(--stage-muted);
  font-size: 13px;
  line-height: 1.65;
}

/* Command palette */
.cp-scene {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  width: min(580px, 100%);
  height: min(460px, 100%);
  min-height: 350px;
  padding-bottom: 40px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.cp-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid var(--stage-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--stage-ink);
  font-size: 13px;
}

.cp-key {
  padding: 3px 7px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.12);
  font-family: var(--font-mono);
  font-size: 10px;
}

.cp-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 12, 0.4);
  backdrop-filter: blur(var(--cp-blur, 8px));
  -webkit-backdrop-filter: blur(var(--cp-blur, 8px));
  opacity: 0;
}

.cp-panel {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;
  display: flex;
  flex-direction: column;
  width: min(430px, 88%);
  max-height: 72%;
  overflow: hidden;
  border-radius: 18px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sheet);
  opacity: 0;
  translate: -50% -50%;
  transform: scale(0.94);
  will-change: transform, opacity;
}

.cp-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border-bottom: 1px solid var(--line);
}

.cp-input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: none;
  background: none;
  font-size: 15px;
}

.cp-close {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 8px;
  background: var(--surface-3);
  color: var(--ink-2);
  font-size: 12px;
}

.cp-list {
  padding: 6px;
  overflow-y: auto;
}

.cp-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  border-radius: 10px;
  background: none;
  color: var(--ink);
  text-align: left;
  font-size: 13.5px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 200ms, transform 240ms var(--ease-out), background-color 150ms;
}

.cp-scene.is-open .cp-item {
  opacity: 1;
  transform: none;
}

.cp-item:hover {
  background: var(--surface-3);
}

.cp-item kbd {
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
}

.cp-empty {
  padding: 18px 12px;
  color: var(--ink-3);
  font-size: 13px;
  text-align: center;
}

/* Dark-stage variants for shared lab buttons */
.study-stage .lab-button-primary {
  border-color: transparent;
  background: var(--stage-ink);
  color: var(--stage);
}

/* Anchored modal */
.mo-scene {
  position: relative;
  display: grid;
  place-items: center;
  width: min(580px, 100%);
  height: min(440px, 100%);
  min-height: 350px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.mo-page {
  display: grid;
  place-items: center;
}

.mo-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 10, 0.45);
  backdrop-filter: blur(var(--mo-blur, 5px));
  -webkit-backdrop-filter: blur(var(--mo-blur, 5px));
  opacity: 0;
}

.mo-panel {
  position: absolute;
  inset: 8%;
  z-index: 2;
  overflow: hidden;
  border-radius: 24px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5);
  transform-origin: center center;
  will-change: transform;
}

.mo-inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  padding: clamp(20px, 4vw, 40px);
}

.mo-kicker {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.mo-title {
  margin-top: 10px;
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: -0.03em;
}

.mo-text {
  max-width: 42ch;
  margin-top: 10px;
  color: var(--ink-2);
  font-size: 13.5px;
  line-height: 1.65;
}

.mo-close {
  align-self: flex-start;
  margin-top: 22px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--surface-2);
  font-size: 13px;
}

/* Bottom sheet */
.bs-scene {
  position: relative;
  width: min(580px, 100%);
  height: min(450px, 100%);
  min-height: 350px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.bs-page {
  display: grid;
  place-items: center;
  height: 100%;
}

.bs-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.38);
  opacity: 0;
}

.bs-sheet {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  max-height: 82%;
  padding: 10px 20px 24px;
  border-radius: 22px 22px 0 0;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 -22px 60px rgba(0, 0, 0, 0.4);
  cursor: grab;
  touch-action: none;
  transform: translateY(110%);
  will-change: transform;
}

.bs-sheet.is-dragging {
  cursor: grabbing;
}

.bs-handle {
  display: block;
  width: 44px;
  height: 5px;
  margin: 4px auto 14px;
  border-radius: 3px;
  background: var(--line-strong);
}

.bs-title {
  font-size: 22px;
}

.bs-text {
  max-width: 48ch;
  margin-top: 8px;
  color: var(--ink-2);
  font-size: 13.5px;
  line-height: 1.6;
}

.bs-close {
  margin-top: 18px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--surface-2);
  font-size: 13px;
}

/* Popover collision */
.po-scene {
  position: relative;
  width: min(590px, 100%);
  height: min(450px, 100%);
  min-height: 350px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.po-trigger {
  position: absolute;
  z-index: 1;
  padding: 9px 14px;
  border: 1px solid var(--stage-line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--stage-ink);
  font-size: 12px;
}

.po-tl { top: 18px; left: 18px; }
.po-tr { top: 18px; right: 18px; }
.po-bl { bottom: 52px; left: 18px; }
.po-br { right: 18px; bottom: 52px; }

.po-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.22);
  opacity: 0;
}

.po-panel {
  position: absolute;
  z-index: 3;
  width: 226px;
  padding: 15px;
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-lift);
  opacity: 0;
  will-change: transform, opacity;
}

.po-title {
  font-size: 15px;
}

.po-text {
  margin-top: 6px;
  color: var(--ink-2);
  font-size: 12px;
  line-height: 1.55;
}

.po-arrow {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--surface);
  transform: rotate(45deg);
}

.placement-bottom .po-arrow {
  top: -4px;
  left: calc(var(--arrow-x, 50%) - 5px);
}

.placement-top .po-arrow {
  bottom: -4px;
  left: calc(var(--arrow-x, 50%) - 5px);
}

.placement-right .po-arrow {
  top: calc(var(--arrow-y, 50%) - 5px);
  left: -4px;
}

.placement-left .po-arrow {
  top: calc(var(--arrow-y, 50%) - 5px);
  right: -4px;
}

.po-status {
  position: absolute;
  bottom: 16px;
  left: 50%;
  color: var(--stage-muted);
  font-size: 10.5px;
  transform: translateX(-50%);
}

/* Toasts */
.toast-scene {
  position: relative;
  width: min(590px, 100%);
  height: min(450px, 100%);
  min-height: 350px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.toast-stack {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: var(--toast-gap, 10px);
  width: min(300px, 72%);
}

.toast-stack[data-position="top-center"] {
  right: auto;
  left: 50%;
  transform: translateX(-50%);
}

.toast {
  display: flex;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-lift);
  will-change: transform, opacity;
}

.toast-dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 5px;
  border-radius: 50%;
  background: #30d158;
}

.toast-copy strong {
  font-size: 13px;
}

.toast-copy p {
  margin-top: 2px;
  color: var(--ink-2);
  font-size: 11.5px;
  line-height: 1.45;
}

.toast-actions {
  position: absolute;
  bottom: 38px;
  left: 50%;
  transform: translateX(-50%);
}

/* Accordion */
.acc-root {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(560px, 100%);
}

.acc-item {
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.acc-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 16px;
  border: 0;
  background: none;
  color: var(--stage-ink);
  font-size: 14px;
  text-align: left;
}

.acc-icon {
  color: var(--stage-muted);
  font-size: 18px;
}

.acc-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--acc-duration, 340ms) var(--acc-ease, cubic-bezier(.22, 1, .36, 1));
}

.acc-item.is-open .acc-panel {
  grid-template-rows: 1fr;
}

.acc-inner {
  overflow: hidden;
}

.acc-inner-text {
  padding: 0 16px 16px;
  color: var(--stage-muted);
  font-size: 12.5px;
  line-height: 1.65;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity calc(var(--acc-duration, 340ms) * 0.6) var(--acc-stagger, 60ms),
    transform calc(var(--acc-duration, 340ms) * 0.7) var(--acc-stagger, 60ms);
}

.acc-item.is-open .acc-inner-text {
  opacity: 1;
  transform: none;
}

/* Drag inertia */
.di-zone {
  position: relative;
  width: min(570px, 100%);
  height: min(410px, 100%);
  min-height: 330px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.07) 0 1px, transparent 1.5px) 0 0 / 24px 24px,
    rgba(255, 255, 255, 0.02);
}

.di-axis {
  position: absolute;
  background: rgba(255, 255, 255, 0.08);
}

.di-axis-x {
  top: 50%;
  right: 0;
  left: 0;
  height: 1px;
}

.di-axis-y {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
}

.di-puck {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 64px;
  height: 64px;
  margin: -32px 0 0 -32px;
  border-radius: 50%;
  background: linear-gradient(145deg, #ffffff, #d8d8df);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
  cursor: grab;
  touch-action: none;
  transform: translate3d(var(--x, 0), var(--y, 0), 0);
  will-change: transform;
}

.di-puck.is-dragging {
  cursor: grabbing;
  box-shadow: 0 24px 46px rgba(0, 0, 0, 0.5);
}

/* Rubber band */
.rb-zone {
  position: relative;
  display: grid;
  place-items: center;
  width: min(570px, 100%);
  height: 270px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.rb-limit {
  position: absolute;
  top: 14%;
  height: 26px;
  border-left: 1px dashed rgba(255, 255, 255, 0.32);
}

.rb-limit-left {
  left: calc(50% - var(--limit, 80px));
}

.rb-limit-right {
  left: calc(50% + var(--limit, 80px));
}

.rb-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 210px;
  height: 132px;
  border-radius: 18px;
  background: var(--stage-ink);
  color: var(--stage);
  box-shadow: 0 22px 44px rgba(0, 0, 0, 0.36);
  cursor: grab;
  touch-action: none;
  will-change: transform;
}

.rb-card.is-dragging {
  cursor: grabbing;
}

.rb-card strong {
  font-size: 18px;
}

.rb-card span {
  color: var(--ink-2);
  font-size: 11px;
}

.rb-grip {
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.15);
}

/* Swipe to delete */
.sd-card {
  width: min(540px, 100%);
  padding: 16px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.sd-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sd-row {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: #ff453a;
}

.sd-action {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: var(--action-w, 92px);
  border: 0;
  background: #ff453a;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  opacity: 0;
}

.sd-row-content {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  background: #f7f7f9;
  color: var(--ink);
  cursor: grab;
  touch-action: pan-y;
  will-change: transform;
}

.sd-row-content.is-dragging {
  cursor: grabbing;
}

.sd-avatar {
  display: grid;
  flex: none;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

.sd-row-content strong {
  display: block;
  font-size: 13.5px;
}

.sd-row-content span {
  display: block;
  margin-top: 2px;
  color: #86868b;
  font-size: 11.5px;
}

.sd-footer {
  display: flex;
  justify-content: center;
  padding-top: 14px;
}

.sd-footer .lab-button {
  border-color: var(--line);
  background: #f7f7f9;
  color: var(--ink);
}

/* Pull to refresh */
.pr-card {
  width: min(430px, 100%);
  padding: 10px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.pr-viewport {
  position: relative;
  height: 360px;
  overflow-y: auto;
  border-radius: 16px;
  background: #f5f5f7;
  overscroll-behavior: contain;
}

.pr-indicator {
  position: absolute;
  top: 8px;
  right: 0;
  left: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #86868b;
  font-size: 11px;
  opacity: 0;
  pointer-events: none;
}

.pr-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(0, 0, 0, 0.15);
  border-radius: 50%;
  transition: border-color var(--dur-2), transform var(--dur-2);
}

.pr-viewport.is-ready .pr-spinner {
  border-color: var(--accent);
  transform: rotate(45deg);
}

.pr-viewport.is-refreshing .pr-spinner {
  border-top-color: var(--accent);
  animation: pr-spin 0.8s linear infinite;
}

@keyframes pr-spin {
  to {
    transform: rotate(360deg);
  }
}

.pr-list {
  padding: 56px 14px 14px;
  will-change: transform;
}

.pr-note {
  margin-bottom: 8px;
  padding: 12px 14px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: 10px;
  background: #fff;
  color: #1d1d1f;
  font-size: 12.5px;
}

.pr-note-fresh {
  border-color: rgba(0, 113, 227, 0.25);
  background: rgba(0, 113, 227, 0.06);
  color: #0066cc;
}

/* Pinch zoom */
.pz-card {
  width: min(530px, 100%);
  padding: 10px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.pz-viewport {
  position: relative;
  height: min(360px, 52vh);
  overflow: hidden;
  border-radius: 16px;
  background: #0b0b0d;
  cursor: grab;
  touch-action: none;
}

.pz-image {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background:
    radial-gradient(60% 60% at 30% 30%, #5e5ce6, transparent 62%),
    radial-gradient(50% 50% at 75% 70%, #64d2ff, transparent 62%),
    linear-gradient(140deg, #1a1a1d, #2c2c32);
  transform-origin: center;
  user-select: none;
  will-change: transform;
}

.pz-mark {
  color: #fff;
  font-size: clamp(38px, 6vw, 70px);
  font-weight: 700;
  letter-spacing: -0.06em;
  opacity: 0.92;
}

.pz-sub {
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-mono);
  font-size: 10.5px;
}

.pz-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 4px 2px;
}

.pz-status {
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.pz-footer .lab-button {
  border-color: var(--stage-line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--stage-ink);
}

/* Card stack */
.cs-scene {
  position: relative;
  width: min(570px, 100%);
  height: min(440px, 100%);
  min-height: 350px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.cs-pile {
  position: absolute;
  inset: 24px 24px 74px;
}

.cs-card {
  position: absolute;
  top: 50%;
  left: 50%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  width: min(290px, 80%);
  height: 232px;
  padding: 22px;
  border-radius: 22px;
  color: #fff;
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.42);
  cursor: grab;
  touch-action: none;
  translate: -50% -50%;
  will-change: transform;
}

.cs-card.is-dragging {
  cursor: grabbing;
}

.cs-blue { background: linear-gradient(145deg, #0a84ff, #0040a3); }
.cs-green { background: linear-gradient(145deg, #30d158, #0a7a37); }
.cs-purple { background: linear-gradient(145deg, #bf5af2, #5e2e8a); }
.cs-orange { background: linear-gradient(145deg, #ff9f0a, #a34d00); }

.cs-kicker {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  opacity: 0.65;
}

.cs-card h4 {
  margin-top: auto;
  font-size: 28px;
  letter-spacing: -0.04em;
}

.cs-card p {
  font-size: 12.5px;
  opacity: 0.78;
}

.cs-footer {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.cs-status {
  color: var(--stage-muted);
  font-size: 11px;
}

.cs-footer .lab-button {
  border-color: var(--stage-line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--stage-ink);
}

/* Scroll progress */
.sp-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(530px, 100%);
  padding: 12px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.sp-topline {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 6px;
}

.sp-track {
  position: relative;
  flex: 1;
  height: 4px;
  overflow: hidden;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.1);
}

.sp-bar {
  position: absolute;
  inset: 0;
  background: #64d2ff;
  transform: scaleX(0);
  transform-origin: left;
}

.sp-percent {
  min-width: 40px;
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: right;
}

.sp-viewport {
  height: 350px;
  overflow-y: auto;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.22);
  overscroll-behavior: contain;
}

.sp-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  min-height: 330px;
  padding: 32px;
  border-bottom: 1px solid var(--stage-line);
}

.sp-section h4 {
  color: var(--stage-ink);
  font-size: 24px;
}

.sp-section p {
  max-width: 36ch;
  color: var(--stage-muted);
  font-size: 13px;
  line-height: 1.6;
}

.sp-shape {
  width: 96px;
  height: 96px;
  margin-top: 8px;
  border-radius: 26px;
  background: linear-gradient(135deg, #64d2ff, #5e5ce6);
  opacity: 0.8;
}

.sp-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 6px 2px;
}

.sp-rotator {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--stage-line);
  border-radius: 50%;
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 7.5px;
  will-change: transform;
}

.sp-native {
  color: var(--stage-muted);
  font-size: 10.5px;
}

/* Parallax layers */
.pl-card {
  width: min(540px, 100%);
  padding: 10px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.pl-viewport {
  position: relative;
  height: 390px;
  overflow-y: auto;
  border-radius: 16px;
  background: #0e0e11;
  overscroll-behavior: contain;
}

.pl-stage {
  position: sticky;
  top: 0;
  display: grid;
  place-items: center;
  height: 280px;
  overflow: hidden;
}

.pl-layer {
  position: absolute;
  right: -10%;
  bottom: -18%;
  left: -10%;
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  transition: transform 80ms linear;
  will-change: transform;
}

.pl-far {
  bottom: 8%;
  height: 52%;
  opacity: 0.8;
}

.pl-mid {
  bottom: -8%;
  height: 64%;
  opacity: 0.9;
}

.pl-near {
  bottom: -18%;
  height: 48%;
}

.pl-title {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: #fff;
  text-align: center;
  will-change: transform;
}

.pl-title span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  opacity: 0.6;
}

.pl-title strong {
  font-size: 24px;
  letter-spacing: -0.03em;
}

.pl-content {
  position: relative;
  z-index: 2;
  padding: 20px;
  background: #0e0e11;
}

.pl-block {
  margin-bottom: 10px;
  padding: 18px;
  border: 1px solid var(--stage-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.pl-index {
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.pl-block p {
  margin-top: 6px;
  color: var(--stage-muted);
  font-size: 12.5px;
  line-height: 1.6;
}

/* Reveal stagger */
.rs-card {
  width: min(540px, 100%);
  padding: 10px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.rs-viewport {
  position: relative;
  height: 370px;
  overflow-y: auto;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.22);
  overscroll-behavior: contain;
}

.rs-spacer {
  display: grid;
  place-items: center;
  height: 220px;
  color: var(--stage-muted);
  font-size: 12px;
}

.rs-groups {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 0 16px 24px;
}

.rs-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.rs-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  border: 1px solid var(--stage-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--stage-ink);
  opacity: 0;
  transform: translateY(var(--rs-distance, 26px));
  transition: opacity 320ms, transform 420ms cubic-bezier(.22, 1, .36, 1);
  transition-delay: calc(var(--i) * var(--rs-stagger, 60ms));
}

.rs-group.is-visible .rs-item {
  opacity: 1;
  transform: none;
}

.rs-item strong {
  font-size: 14px;
}

.rs-item span {
  color: var(--stage-muted);
  font-size: 11px;
}

.rs-footer {
  display: flex;
  justify-content: flex-end;
  padding: 8px 6px 2px;
}

.rs-footer .lab-button {
  border-color: var(--stage-line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--stage-ink);
}

/* Scroll snap */
.sn-card {
  width: min(530px, 100%);
  padding: 10px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.sn-viewport {
  height: 360px;
  overflow-y: auto;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.24);
  scroll-snap-type: y mandatory;
  overscroll-behavior: contain;
}

.sn-slide {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  height: 100%;
  padding: 36px;
  border-bottom: 1px solid var(--stage-line);
  scroll-snap-align: var(--sn-align, start);
}

.sn-index {
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.sn-slide h4 {
  color: var(--stage-ink);
  font-size: 28px;
  letter-spacing: -0.04em;
}

.sn-slide p {
  max-width: 36ch;
  color: var(--stage-muted);
  font-size: 13px;
  line-height: 1.6;
}

.sn-mark {
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.3);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
}

.sn-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 6px 2px;
}

.sn-footer .lab-button {
  border-color: var(--stage-line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--stage-ink);
}

.sn-indicators {
  display: flex;
  gap: 6px;
}

.sn-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  transition: background var(--dur-2), transform var(--dur-2);
}

.sn-dot[aria-selected="true"] {
  background: #64d2ff;
  transform: scale(1.25);
}

/* Velocity skew */
.vs-card-shell {
  width: min(540px, 100%);
  padding: 10px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.vs-viewport {
  height: 380px;
  overflow-y: auto;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.24);
  overscroll-behavior: contain;
}

.vs-wrapper {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  transform-origin: center;
  will-change: transform;
}

.vs-card {
  padding: 16px;
  border: 1px solid var(--stage-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--stage-ink);
}

.vs-index {
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.vs-card strong {
  display: block;
  margin-top: 4px;
  font-size: 16px;
}

.vs-card p {
  margin-top: 4px;
  color: var(--stage-muted);
  font-size: 12px;
  line-height: 1.55;
}

.vs-footer {
  display: flex;
  justify-content: flex-end;
  padding: 8px 6px 2px;
}

.vs-readout {
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* Flip filter */
.ff-card-shell {
  width: min(570px, 100%);
  padding: 16px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.ff-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.ff-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.ff-filter {
  padding: 7px 12px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.05);
  color: var(--stage-muted);
  font-size: 11.5px;
  transition: background-color var(--dur-2), color var(--dur-2);
}

.ff-filter[aria-pressed="true"] {
  border-color: transparent;
  background: var(--stage-ink);
  color: var(--stage);
}

.ff-count {
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 10.5px;
}

.ff-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.ff-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  height: 86px;
  padding: 12px;
  border-radius: 12px;
  color: #fff;
  will-change: transform;
}

.ff-index {
  font-family: var(--font-mono);
  font-size: 9px;
  opacity: 0.62;
}

.ff-card strong {
  font-size: 13px;
}

.ff-blue { background: linear-gradient(135deg, #0a84ff, #0040a3); }
.ff-green { background: linear-gradient(135deg, #30d158, #0a7a37); }
.ff-purple { background: linear-gradient(135deg, #bf5af2, #5e2e8a); }
.ff-orange { background: linear-gradient(135deg, #ff9f0a, #a34d00); }

/* Shared element */
.se-scene {
  position: relative;
  width: min(570px, 100%);
  height: min(450px, 100%);
  min-height: 350px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
}

.se-thumbs {
  position: absolute;
  right: 20px;
  bottom: 20px;
  left: 20px;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.se-thumb {
  display: flex;
  flex: 1;
  align-items: flex-end;
  max-width: 160px;
  aspect-ratio: 4 / 3;
  padding: 10px;
  border: 0;
  border-radius: 12px;
  background-size: cover;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.32);
  transition: transform var(--dur-2) var(--ease-out);
}

.se-thumb:hover {
  transform: translateY(-3px);
}

.se-hero {
  position: absolute;
  inset: 6%;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  padding: 24px;
  border-radius: 22px;
  background-size: cover;
  color: #fff;
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.46);
  transform-origin: top left;
  will-change: transform;
}

.se-kicker {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  opacity: 0.72;
}

.se-hero-label {
  font-size: clamp(28px, 4vw, 46px);
  letter-spacing: -0.04em;
}

.se-sub {
  max-width: 36ch;
  font-size: 12.5px;
  line-height: 1.55;
  opacity: 0.78;
}

.se-close {
  align-self: flex-start;
  margin-top: 12px;
  padding: 9px 16px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--r-pill);
  background: rgba(0, 0, 0, 0.26);
  color: #fff;
  font-size: 12px;
}

/* Skeleton */
.sk-card {
  width: min(510px, 100%);
  padding: 12px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.sk-frame {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  border-radius: 16px;
  background: #f5f5f7;
  color: var(--ink);
}

.sk-skeleton {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px;
  transition: opacity var(--sk-fade, 420ms);
}

.sk-media {
  height: 150px;
  border-radius: 12px;
}

.sk-lines {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sk-line {
  width: 84%;
  height: 14px;
  border-radius: 7px;
}

.sk-line-lg {
  width: 68%;
  height: 22px;
}

.sk-line-sm {
  width: 46%;
}

.sk-block {
  background: linear-gradient(100deg, #e9e9ee 20%, #f8f8fa 40%, #e9e9ee 60%);
  background-size: 220% 100%;
  animation: sk-shimmer var(--sk-shimmer, 1400ms) linear infinite;
}

@keyframes sk-shimmer {
  from { background-position: 180% 0; }
  to { background-position: -80% 0; }
}

.sk-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--sk-fade, 420ms), transform var(--sk-fade, 420ms);
}

.sk-card.is-loaded .sk-skeleton {
  opacity: 0;
  pointer-events: none;
}

.sk-card.is-loaded .sk-content {
  opacity: 1;
  transform: none;
}

.sk-photo {
  display: grid;
  place-items: center;
  height: 150px;
  border-radius: 12px;
  background: linear-gradient(135deg, #5e5ce6, #64d2ff);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.sk-content h4 {
  font-size: 20px;
}

.sk-content p {
  color: var(--ink-2);
  font-size: 12.5px;
  line-height: 1.6;
}

.sk-meta {
  display: flex;
  justify-content: space-between;
  margin-top: auto;
  color: var(--ink-3);
  font-size: 10.5px;
}

.sk-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 4px 2px;
  color: var(--stage-muted);
  font-size: 11px;
}

/* Stagger list */
.sl-card {
  width: min(530px, 100%);
  padding: 14px;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.sl-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sl-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--stage-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--stage-ink);
  opacity: 0;
  transform: translateY(calc(var(--sl-distance, 22px) * var(--sl-dir, 1)));
  transition: opacity var(--sl-duration, 360ms),
    transform var(--sl-duration, 360ms) cubic-bezier(.22, 1, .36, 1);
  transition-delay: calc(var(--i) * var(--sl-stagger, 60ms));
}

.sl-list.is-in .sl-row {
  opacity: 1;
  transform: none;
}

.sl-index {
  width: 22px;
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.sl-row strong {
  font-size: 13.5px;
}

.sl-meta {
  margin-left: auto;
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.sl-footer {
  display: flex;
  justify-content: flex-end;
  padding-top: 12px;
}

.sl-footer .lab-button {
  border-color: transparent;
  background: var(--stage-ink);
  color: var(--stage);
}

/* Magnetic cursor */
.mc-scene {
  position: relative;
  width: min(570px, 100%);
  height: min(430px, 100%);
  min-height: 340px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(90% 80% at 50% 0%, rgba(255, 255, 255, 0.06), transparent 70%),
    rgba(255, 255, 255, 0.02);
  cursor: none;
}

.mc-dot,
.mc-ring {
  position: absolute;
  top: 0;
  left: 0;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
}

.mc-dot {
  z-index: 3;
  width: var(--mc-size, 14px);
  height: var(--mc-size, 14px);
  background: #fff;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.5);
  will-change: transform;
}

.mc-ring {
  z-index: 2;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  transition: width var(--dur-2), height var(--dur-2), background-color var(--dur-2), border-color var(--dur-2);
  will-change: transform;
}

.mc-scene.is-active .mc-dot,
.mc-scene.is-active .mc-ring {
  opacity: 1;
}

.mc-scene.is-hovering .mc-ring {
  width: 68px;
  height: 68px;
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.06);
}

.mc-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 430px;
  height: 100%;
  padding: clamp(24px, 5vw, 48px);
  cursor: none;
}

.mc-kicker {
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.mc-title {
  margin-top: 10px;
  color: var(--stage-ink);
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.04em;
}

.mc-text {
  margin-top: 10px;
  color: var(--stage-muted);
  font-size: 13px;
  line-height: 1.65;
}

.mc-actions {
  display: flex;
  gap: 8px;
  margin-top: 20px;
}

.mc-actions .lab-button {
  border-color: var(--stage-line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--stage-ink);
}

.mc-actions .lab-button-primary {
  border-color: transparent;
  background: var(--stage-ink);
  color: var(--stage);
}

/* Spotlight */
.spot-scene {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  width: min(590px, 100%);
}

.spot-card {
  position: relative;
  min-height: 230px;
  padding: 20px;
  overflow: hidden;
  border: 1px solid var(--stage-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--stage-ink);
}

.spot-card::before {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle var(--spot-radius, 190px) at var(--x, 50%) var(--y, 50%),
    rgba(255, 255, 255, var(--spot-intensity, 0.18)),
    transparent var(--spot-soft, 72%)
  );
  opacity: 0;
  transition: opacity var(--dur-2);
  content: "";
  pointer-events: none;
}

.spot-card.is-hovering::before {
  opacity: 1;
}

.spot-card h4 {
  position: relative;
  z-index: 1;
  font-size: 17px;
}

.spot-card p {
  position: relative;
  z-index: 1;
  margin-top: 8px;
  color: var(--stage-muted);
  font-size: 12px;
  line-height: 1.6;
}

/* Tilt card */
.tc-scene {
  width: min(500px, 100%);
  perspective: var(--perspective, 1000px);
}

.tc-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 290px;
  padding: 28px;
  border-radius: 24px;
  background: linear-gradient(145deg, #ffffff, #e6e6ee);
  color: var(--ink);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.36);
  transform-style: preserve-3d;
  will-change: transform;
}

.tc-badge {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.tc-card h4 {
  margin-top: auto;
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: -0.04em;
}

.tc-card p {
  max-width: 38ch;
  color: var(--ink-2);
  font-size: 13px;
  line-height: 1.6;
}

.tc-foot {
  margin-top: auto;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
}

.tc-glare {
  position: absolute;
  inset: 0;
  border-radius: 24px;
  background: radial-gradient(
    circle at var(--gx, 50%) var(--gy, 50%),
    rgba(255, 255, 255, 0.55),
    transparent 55%
  );
  opacity: 0;
  transition: opacity var(--dur-2);
  pointer-events: none;
}

.tc-card.is-tilting .tc-glare {
  opacity: 0.7;
}

/* Kinetic text */
.kt-card {
  width: min(590px, 100%);
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--stage-line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
}

.kt-kicker {
  color: var(--stage-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.kt-heading {
  margin-top: 14px;
  color: var(--stage-ink);
  font-size: clamp(34px, 6vw, 58px);
  letter-spacing: -0.05em;
  line-height: 1.12;
}

.kt-line {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0 0.06em;
}

.kt-piece {
  display: inline-block;
  opacity: 0;
  transform: translateY(var(--kt-distance, 18px));
  transition: opacity var(--kt-duration, 420ms) var(--kt-ease, cubic-bezier(.22, 1, .36, 1)),
    transform var(--kt-duration, 420ms) var(--kt-ease, cubic-bezier(.22, 1, .36, 1));
  transition-delay: calc(var(--i) * var(--kt-stagger, 45ms));
  will-change: transform, opacity;
}

.kt-card.is-in .kt-piece {
  opacity: 1;
  transform: none;
}

.kt-sub {
  max-width: 46ch;
  margin-top: 14px;
  color: var(--stage-muted);
  font-size: 13px;
  line-height: 1.65;
}

.kt-actions {
  margin-top: 22px;
}

@media (max-width: 720px) {
  .ff-grid,
  .spot-scene {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .spot-card {
    min-height: 180px;
  }

  .se-hero {
    inset: 4%;
  }
}

.demo-actions {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.demo-actions .lab-button {
  border-color: var(--stage-line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--stage-ink);
}

.cs-actions {
  display: flex;
  gap: 6px;
}

.ripple-surface {
  border: 0;
  padding: 0;
  font: inherit;
  appearance: none;
}
.se-content {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  height: 100%;
}
:root:not([data-motion="full"]) .mc-scene,
:root:not([data-motion="full"]) .mc-content { cursor:auto; }
:root:not([data-motion="full"]) .mc-dot,
:root:not([data-motion="full"]) .mc-ring { display:none; }
.toast-stack { pointer-events:none; }
.pr-viewport { touch-action:pan-x; }
.demo-switch { touch-action:pan-y; }