.process-flow {
    padding-block: var(--space-6);
    background: var(--color-bg);
}

.process-flow__layout {
    display: grid;
    grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
    gap: 52px;
    align-items: stretch;
}

.process-steps {
    position: relative;
    grid-column: 2;
    grid-row: 1;
    display: grid;
    gap: 10px;
    padding-left: 28px;
}

.process-steps__track,
.process-steps__progress {
    position: absolute;
    left: 9px;
    top: 36px;
}

.process-steps__track {
    bottom: 36px;
    width: 1px;
    background: var(--color-border);
}

.process-steps__progress {
    width: 2px;
    height: 0;
    background: var(--color-primary);
    transition: height 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.process-step {
    position: relative;
    display: block;
    width: 100%;
    min-height: 78px;
    padding: 16px 20px 16px 22px;
    border: 1px solid transparent;
    border-radius: 16px;
    background: var(--color-bg);
    color: var(--color-text);
    text-align: left;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.process-step::before {
    content: "";
    position: absolute;
    left: -25px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    width: 13px;
    height: 13px;
    border: 2px solid var(--color-border-strong);
    border-radius: 50%;
    background: var(--color-bg);
    transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.process-step:hover {
    background: var(--color-surface);
}

.process-step.is-active {
    background: var(--color-mint);
    border-color: var(--color-mint-strong);
    transform: translateX(5px);
    box-shadow: 0 14px 30px rgba(0, 49, 56, 0.05);
}

.process-step.is-active::before {
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 5px var(--color-mint);
    transform: translate(-5px, -50%);
}

.process-step__num {
    display: block;
    margin-bottom: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.45;
    letter-spacing: 0.06em;
    color: var(--color-secondary);
}

.process-step__title {
    display: block;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.0125em;
}

.process-step__text {
    display: block;
    max-width: 360px;
    margin-top: 6px;
    font-size: 0.86rem;
    line-height: 1.5;
    color: var(--color-text-soft);
}

.process-step:focus-visible,

.process-stage {
    position: relative;
    grid-column: 1;
    grid-row: 1;
    display: flex;
    flex-direction: column;
    min-height: 300px;
}

.process-panel {
    position: relative;
    display: none;
    flex: 1;
    flex-direction: column;
    gap: var(--space-4);
}

.process-panel.is-visible {
    display: flex;
    animation: process-fade 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.process-panel__num {
    position: absolute;
    top: -0.12em;
    right: 0;
    z-index: 0;
    font-size: clamp(6rem, 12vw, 10rem);
    font-weight: 650;
    line-height: 1;
    letter-spacing: -0.02em;
    color: var(--color-secondary);
    opacity: 0.07;
    pointer-events: none;
    user-select: none;
}

.process-panel__head {
    position: relative;
    z-index: 1;
    max-width: 30ch;
}

.process-panel__tag {
    display: inline-block;
    margin-bottom: 10px;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.45;
    letter-spacing: 0.07em;
    color: var(--color-secondary);
}

.process-panel__title {
    margin: 0;
    font-size: clamp(1.4rem, 2.4vw, 1.9rem);
    letter-spacing: -0.015em;
    line-height: 1.2;
    color: var(--color-text);
}

.process-panel__text {
    position: relative;
    z-index: 1;
    max-width: 52ch;
    margin: 0;
    font-size: 0.96rem;
    line-height: 1.65;
    color: var(--color-text-soft);
}

.process-panel__text strong {
    font-weight: 600;
    color: var(--color-secondary);
}

@keyframes process-fill {
    to { width: 100%; }
}

@keyframes process-fade {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: none; }
}

@media (max-width: 900px) {
    .process-flow {
        padding-block: var(--space-6);
    }

    .process-flow__layout {
        grid-template-columns: minmax(0, 1fr);
        gap: var(--space-4);
    }

    .process-stage {
        grid-column: 1;
        grid-row: 1;
        min-height: 0;
    }

    .process-steps {
        grid-column: 1;
        grid-row: 2;
        gap: 2px;
        padding-left: 24px;
    }

    .process-step {
        min-height: 68px;
        padding: 12px 16px;
    }

    .process-step::before {
        left: -21px;
    }

    .process-step__title {
        font-size: 1.02rem;
    }

    .process-step__text {
        font-size: 0.8rem;
    }

    .process-panel__num {
        top: var(--space-3);
        right: var(--space-4);
        font-size: 4rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .process-panel.is-visible {
        animation: none;
    }

    .process-step,
    .process-step::before,
    .process-steps__progress {
        transition-duration: 0.01ms !important;
    }

}

@media (min-width: 981px) {
    .process-panel {
        justify-content: center;
        max-width: 640px;
    }
}