:root {
    --az-navy: #0a1f2e;
    --az-bronze: #a67c00;
    --az-gold: #c5a017;
    --az-bg: #f8f9fa;
}

.selling-hero {
    padding: 6rem 0 4rem;
    margin-bottom: 0;
    border-bottom: 1px solid #e0e0e0;
    background: radial-gradient(circle at top right, rgba(166, 124, 0, 0.08), transparent), #fff;
}

.hero-badge {
    display: inline-block;
    margin-bottom: 1.5rem;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    background: rgba(10, 31, 46, 0.05);
    color: var(--az-bronze);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.selling-title {
    margin-bottom: 1rem;
    color: var(--az-navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2.25rem, 6vw, 3.5rem);
    font-weight: 900;
    line-height: 1.15;
}

.selling-intro {
    max-width: 50rem;
    margin: 0 auto;
    color: #4d555d;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1.125rem;
    line-height: 1.65;
}

.timeline-wrapper {
    position: relative;
    overflow: hidden;
    padding: 5rem 0 6rem;
    background: var(--az-bg);
}

.timeline-spine {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    z-index: 0;
    width: 2px;
    background: #d7dce0;
    transform: translateX(-50%);
}

.timeline-step {
    position: relative;
    z-index: 2;
    margin-bottom: 3rem;
}

.step-card {
    position: relative;
    padding: 2.25rem;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-left: 4px solid var(--az-navy);
    border-radius: 0.5rem;
    background: #fff;
    box-shadow: 0 0.625rem 1.5rem rgba(0, 0, 0, 0.06);
    text-align: left;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.step-card:hover {
    transform: translateY(-0.2rem);
    box-shadow: 0 0.75rem 1.75rem rgba(0, 0, 0, 0.08);
}

.step-heading {
    margin-bottom: 1rem;
    color: var(--az-navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.4rem;
    font-weight: 700;
}

.step-body {
    margin-bottom: 1.5rem;
    color: #4d555d;
    font-size: 1rem;
    line-height: 1.7;
}

.timeline-node {
    position: relative;
    z-index: 5;
    width: 5rem;
    height: 5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    border: 2px solid #e1e5e8;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.06);
    color: var(--az-navy);
    font-size: 1.5rem;
}

.node-success {
    border-color: var(--az-bronze);
    background: #fffaf0;
    color: var(--az-bronze);
}

.step-context {
    padding: 0 2rem;
}

.step-context small {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--az-bronze);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.step-context div {
    color: var(--az-navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.1rem;
    font-weight: 700;
}

.pro-tip {
    padding: 1rem;
    border-left: 3px solid #aeb5bb;
    border-radius: 0.375rem;
    background: #f8f9fa;
    color: #3e474f;
    font-size: 0.9rem;
}

.pro-tip.success-tip {
    border-left-color: #198754;
    background: #f0fdf4;
    color: #166534;
}

.link-box a {
    min-height: 2.75rem;
    display: inline-flex;
    align-items: center;
    border-bottom: 2px solid var(--az-bronze);
    color: var(--az-navy);
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
}

/* Content remains visible without JavaScript. JavaScript only adds the pending class. */
.fade-in-trigger {
    opacity: 1;
    transform: none;
}

.fade-in-trigger.fade-in-pending {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 500ms ease-out, transform 500ms ease-out;
}

.fade-in-trigger.fade-in-visible {
    opacity: 1;
    transform: none;
}

@media (max-width: 991.98px) {
    .selling-hero {
        padding: 4rem 0 3rem;
    }

    .timeline-wrapper {
        padding: 4rem 0;
    }

    .timeline-spine,
    .timeline-node,
    .step-context {
        display: none;
    }

    .step-card {
        margin-bottom: 1rem;
        text-align: left !important;
    }
}

@media (max-width: 575.98px) {
    .step-card {
        padding: 1.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .step-card,
    .fade-in-trigger.fade-in-pending {
        transition: none;
        transform: none;
    }

    .fade-in-trigger.fade-in-pending {
        opacity: 1;
    }
}