.progression__header {
    text-align: center;
    margin-bottom: 3rem;
    display: flex; flex-direction: column; gap: 1rem;
}
@media (min-width: 768px) { .progression__header { margin-bottom: 4rem; } }
.progression__title {
    font-size: 1.75rem;
    font-weight: 500;
    color: var(--brand-light);
    letter-spacing: -0.015em;
}
@media (min-width: 768px)  { .progression__title { font-size: 2.25rem; } }
@media (min-width: 1024px) { .progression__title { font-size: 2.75rem; } }
.progression__subtitle {
    color: var(--brand-gray);
    font-weight: 300;
    max-width: 36rem;
    margin: 0 auto;
}

.progression__card {
    background: var(--brand-darker);
    border: 1px solid rgba(68,68,68,0.5);
    border-radius: 1.5rem;
    padding: 1.5rem;
}
@media (min-width: 768px) { .progression__card { padding: 2.5rem; border-radius: 1.75rem; } }

.progression__viewport {
    position: relative;
    width: 100%;
    max-width: 28rem;
    aspect-ratio: 3 / 4;
    margin: 0 auto 2rem;
    background: var(--brand-dark);
    border-radius: 1.25rem;
    overflow: hidden;
    cursor: grab;
    touch-action: pan-y;
}
.progression__viewport:active { cursor: grabbing; }
@media (min-width: 768px) { .progression__viewport { margin-bottom: 3rem; } }
.progression__image {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    pointer-events: none;
}
.progression__image.is-active { opacity: 1; }

.progression__badge {
    position: absolute;
    top: 1rem; left: 1rem;
    background: rgba(38,38,38,0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(68,68,68,0.5);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--brand-light);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    pointer-events: none;
}
@media (min-width: 768px) { .progression__badge { top: 1.5rem; left: 1.5rem; } }

.progression__controls {
    max-width: 36rem;
    margin: 0 auto;
}
.progression__legend {
    display: flex; justify-content: space-between;
    margin-bottom: 1rem;
    color: var(--brand-gray);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}
.progression__slider-wrap {
    position: relative;
    display: flex; align-items: center;
}
.progression__slider-icon {
    position: absolute;
    left: -2rem;
    color: rgba(200,200,200,0.5);
    display: none;
}
@media (min-width: 768px) { .progression__slider-icon { display: inline-flex; } }
.progression__range {
    width: 100%;
    appearance: none;
    -webkit-appearance: none;
    height: 0.5rem;
    border-radius: 999px;
    background: var(--brand-dark);
    cursor: pointer;
}
.progression__range::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 1.25rem; height: 1.25rem;
    border-radius: 50%;
    background: var(--brand-light);
    border: 0;
    cursor: pointer;
}
.progression__range::-moz-range-thumb {
    width: 1.25rem; height: 1.25rem;
    border-radius: 50%;
    background: var(--brand-light);
    border: 0;
    cursor: pointer;
}

.progression__steps {
    display: flex; justify-content: space-between;
    margin-top: 1.5rem;
    padding: 0 0.25rem;
}
.progression__step {
    display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
    opacity: 0.5;
    transition: opacity 0.3s;
}
.progression__step:hover { opacity: 0.8; }
.progression__step.is-active { opacity: 1; }
.progression__dot {
    width: 0.75rem; height: 0.75rem;
    border-radius: 50%;
    background: var(--brand-border);
    transition: background 0.3s;
}
.progression__step.is-active .progression__dot,
.progression__step.is-passed .progression__dot { background: var(--brand-light); }
.progression__step-label {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--brand-gray);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: none;
}
@media (min-width: 768px) { .progression__step-label { display: inline; } }