.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    counter-reset: stp;
}

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

.step {
    background: var(--bg-1);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 22px;
    counter-increment: stp;
    position: relative;
}

.step .num {
    font-family: var(--font-mono);
    color: var(--ink-soft);
    font-size: 12px;
    letter-spacing: 0.04em;
}

.step .num::before {
    content: counter(stp, decimal-leading-zero) " · ";
}

.step h3 {
    margin: 10px 0 6px;
    font-size: 19px;
    letter-spacing: -0.01em;
    font-weight: 600;
}

.step p {
    margin: 0;
    color: var(--ink-mute);
    font-size: 14.5px;
}

.step-preview {
    margin-top: 16px;
    height: 120px;
    border: 1px dashed var(--line);
    border-radius: 8px;
    background: var(--bg-2);
    display: grid;
    place-items: center;
    color: var(--ink-soft);
    font-family: var(--font-mono);
    font-size: 11px;
    overflow: hidden;
    position: relative;
}