.alter-hero {
  position: relative;
  min-height: min(820px, 92vh);
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--bg-sunk);
}

.alter-hero__media,
.alter-hero__scrim {
  position: absolute;
  inset: 0;
}

.alter-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
}

.alter-hero__scrim {
  background: var(--scrim-side), var(--scrim-hard);
}

.alter-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: calc(var(--nav-h) + var(--sp-9));
  padding-bottom: var(--sp-9);
}

.alter-hero h1 {
  max-width: 9ch;
}

.alter-hero .lead {
  max-width: 56ch;
  margin-top: var(--sp-5);
  color: var(--text);
}

.alter-hero__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  margin-top: var(--sp-6);
}

.alter-hero__actions span,
.alter-hero__caption {
  color: var(--text-dim);
  font-size: var(--fs-sm);
}

.alter-hero__caption {
  margin-top: var(--sp-6);
}

.alter-section {
  background:
    radial-gradient(circle at 80% 10%, var(--accent-glow), transparent 34%),
    var(--bg);
}

.alter-app {
  max-width: 1040px;
  margin: var(--sp-7) auto 0;
}

.alter-panel,
.alter-form,
.alter-result {
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  background: var(--bg-elev);
  box-shadow: var(--sh-lg);
}

.alter-panel,
.alter-form {
  padding: clamp(var(--sp-5), 5vw, var(--sp-8));
}

.alter-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
  gap: var(--sp-7);
  align-items: end;
}

.alter-intro > .btn {
  grid-column: 1 / -1;
  justify-self: start;
}

.alter-intro h3 {
  font-size: var(--fs-h2);
}

.alter-intro .dim {
  max-width: 48ch;
  margin-top: var(--sp-4);
}

.alter-photo-start {
  display: grid;
  gap: var(--sp-4);
  align-content: start;
}

.alter-photo-start__preview {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--bg-sunk);
}

.alter-photo-start__preview img {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.alter-photo-start .alter-upload__status,
.alter-photo-start .alter-consent {
  grid-column: auto;
}

.alter-preview-list {
  border-top: 1px solid var(--line-strong);
}

.alter-preview-list li {
  display: flex;
  gap: var(--sp-4);
  align-items: baseline;
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--line);
  color: var(--text-dim);
}

.alter-preview-list span {
  color: var(--accent);
  font-family: var(--font-type);
  font-size: var(--fs-xs);
}

.alter-progress {
  margin-bottom: var(--sp-7);
}

.alter-progress p {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-3);
  color: var(--text-dim);
  font-family: var(--font-type);
  font-size: var(--fs-xs);
  text-transform: uppercase;
}

.alter-progress__track {
  height: var(--sp-1);
  overflow: hidden;
  border-radius: var(--r-pill);
  background: var(--line-strong);
}

.alter-progress__track span {
  display: block;
  width: 17%;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width var(--dur-base) var(--ease-standard);
}

.alter-question {
  margin: 0;
  padding: 0;
  border: 0;
}

.alter-question legend {
  max-width: 18ch;
  padding: 0;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: var(--fw-black);
  line-height: var(--lh-tight);
  text-transform: uppercase;
}

.alter-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}

.alter-options label {
  position: relative;
  cursor: pointer;
}

.alter-options input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.alter-options label > span {
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-5);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--bg-soft);
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    background var(--dur-fast) var(--ease-standard),
    transform var(--dur-fast) var(--ease-release);
}

.alter-options label:hover > span {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.alter-options input:checked + span {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent-glow), var(--bg-soft));
  box-shadow: inset 0 0 0 1px var(--accent);
}

.alter-options input:focus-visible + span {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.alter-options b {
  font-size: var(--fs-body);
}

.alter-options small {
  color: var(--text-dim);
}

.alter-controls {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-top: var(--sp-6);
}

.alter-error,
.alter-notice {
  margin-top: var(--sp-4);
  color: var(--err);
}

.alter-result {
  overflow: hidden;
}

.alter-result__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--sp-6);
  padding: clamp(var(--sp-5), 5vw, var(--sp-8));
  border-bottom: 1px solid var(--line-strong);
}

.alter-result__heading h2 {
  max-width: 14ch;
}

.alter-result__heading .lead {
  max-width: 58ch;
  margin-top: var(--sp-4);
}

.alter-result__heading-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--sp-3);
}

.alter-result__grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(var(--sp-5), 5vw, var(--sp-8));
  padding: clamp(var(--sp-5), 5vw, var(--sp-8));
}

.alter-reveal {
  position: relative;
  aspect-ratio: 4 / 5;
  min-height: 480px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background:
    radial-gradient(circle at 50% 32%, var(--accent-glow), transparent 32%),
    var(--bg-sunk);
  box-shadow: var(--sh-bloom);
}

.alter-reveal__portrait,
.alter-reveal__portrait img,
.alter-reveal__effects {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.alter-reveal__portrait img {
  object-fit: cover;
  filter: contrast(1.08) saturate(0.82);
}

.alter-reveal__effects {
  background:
    linear-gradient(180deg, transparent 42%, var(--veil-modal) 100%),
    radial-gradient(circle at 50% 20%, transparent 0 12%, var(--accent-glow) 52%, transparent 68%);
  mix-blend-mode: screen;
  pointer-events: none;
}

.alter-reveal__placeholder {
  position: absolute;
  inset: 0;
}

.alter-reveal__placeholder span {
  position: absolute;
  left: 50%;
  top: 20%;
  width: 31%;
  aspect-ratio: 1;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--line-strong);
}

.alter-reveal__placeholder i {
  position: absolute;
  left: 50%;
  bottom: 12%;
  width: 72%;
  height: 48%;
  transform: translateX(-50%);
  border-radius: 50% 50% 0 0;
  background: var(--line-strong);
}

.alter-reveal__copy {
  position: absolute;
  z-index: 2;
  left: var(--sp-5);
  right: var(--sp-5);
  bottom: var(--sp-5);
  display: grid;
  gap: var(--sp-2);
}

.alter-reveal__copy span,
.alter-reveal__copy small {
  font-family: var(--font-type);
  font-size: var(--fs-xs);
  letter-spacing: var(--track-wide);
  text-transform: uppercase;
}

.alter-reveal__copy span { color: var(--accent); }

.alter-reveal__copy strong {
  max-width: 12ch;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  line-height: var(--lh-tight);
  text-transform: uppercase;
}

.alter-reveal__copy small { color: var(--text-dim); }

.alter-plan {
  display: grid;
  align-content: start;
  gap: var(--sp-7);
}

.alter-plan__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.alter-plan__facts span {
  display: grid;
  gap: var(--sp-2);
  padding: var(--sp-4);
  border-right: 1px solid var(--line);
}

.alter-plan__facts span:last-child { border-right: 0; }
.alter-plan__facts small { color: var(--text-dim); }
.alter-plan__facts b { color: var(--accent); }

.alter-checklist {
  display: grid;
  gap: var(--sp-3);
}

.alter-checklist li {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--sp-4);
  align-items: baseline;
  padding-left: var(--sp-6);
  color: var(--text-dim);
}

.alter-checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: var(--sp-3);
  height: var(--sp-3);
  border: 1px solid var(--accent);
  transform: rotate(45deg);
}

.alter-shop-link {
  color: var(--accent);
  font-family: var(--font-type);
  font-size: var(--fs-xs);
  letter-spacing: var(--track-wide);
  text-transform: uppercase;
  white-space: nowrap;
}

.alter-shop-note {
  margin-top: var(--sp-4);
  color: var(--text-dim);
  font-size: var(--fs-xs);
}

.alter-upload {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--sp-4) var(--sp-6);
  align-items: end;
  padding: clamp(var(--sp-5), 5vw, var(--sp-8));
  border-top: 1px solid var(--line-strong);
  background: var(--bg-soft);
}

.alter-upload .dim { max-width: 58ch; margin-top: var(--sp-3); }

.alter-upload__button input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.alter-upload__button:focus-within .btn {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.alter-upload__status {
  grid-column: 1;
  color: var(--text-dim);
  font-size: var(--fs-sm);
}

.alter-consent {
  grid-column: 1;
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  max-width: 58ch;
  color: var(--text-dim);
  font-size: var(--fs-sm);
  cursor: pointer;
}

.alter-consent input {
  flex: 0 0 auto;
  width: var(--sp-5);
  height: var(--sp-5);
  margin: 0;
  accent-color: var(--accent);
}

.alter-upload__actions {
  grid-column: 2;
  grid-row: 2 / span 2;
  align-self: end;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--sp-3);
}

.alter-result__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding: clamp(var(--sp-5), 5vw, var(--sp-8));
  border-top: 1px solid var(--line-strong);
  background: var(--bg-soft);
}

.alter-result__actions > p {
  max-width: 58ch;
  color: var(--text-dim);
  font-size: var(--fs-sm);
}

.alter-result__actions > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--sp-3);
}

.alter-result.is-rendering [data-photo-render] {
  position: relative;
  padding-right: var(--sp-8);
}

.alter-result.is-rendering [data-photo-render]::after {
  content: '';
  position: absolute;
  right: var(--sp-4);
  width: var(--sp-4);
  height: var(--sp-4);
  border: 2px solid var(--veil-control);
  border-top-color: var(--text-on-accent);
  border-radius: 50%;
  animation: alter-spin var(--dur-slower) linear infinite;
}

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

.alter-next__inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--sp-7);
}

.alter-next .lead {
  max-width: 52ch;
  margin-top: var(--sp-4);
}

@media (max-width: 760px) {
  .alter-hero {
    min-height: 760px;
  }

  .alter-hero__scrim {
    background: var(--scrim-phone);
  }

  .alter-hero__inner {
    padding-bottom: var(--sp-7);
  }

  .alter-hero__actions,
  .alter-result__heading,
  .alter-result__actions,
  .alter-next__inner {
    align-items: stretch;
    flex-direction: column;
  }

  .alter-intro,
  .alter-result__grid,
  .alter-upload {
    grid-template-columns: 1fr;
  }

  .alter-options {
    grid-template-columns: 1fr;
  }

  .alter-options label > span {
    min-height: var(--tap-min);
  }

  .alter-result__heading .btn {
    align-self: start;
  }

  .alter-result__heading-actions,
  .alter-result__actions > div {
    justify-content: stretch;
  }

  .alter-reveal {
    min-height: 0;
  }

  .alter-plan__facts {
    grid-template-columns: 1fr;
  }

  .alter-plan__facts span {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .alter-plan__facts span:last-child { border-bottom: 0; }

  .alter-checklist li {
    grid-template-columns: 1fr;
    gap: var(--sp-2);
  }

  .alter-upload__actions {
    grid-column: auto;
    grid-row: auto;
    display: grid;
    justify-content: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .alter-progress__track span,
  .alter-options label > span {
    transition: none;
  }

  .alter-result.is-rendering [data-photo-render]::after {
    animation: none;
  }
}