.seo-hero {
    padding-bottom: 10px;
}

.seo-card,
.accordion-card {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--pp-line);
    border-radius: var(--pp-radius-xl);
    background: var(--pp-panel);
    box-shadow: var(--pp-shadow-lg);
}

.seo-card {
    padding: clamp(30px, 5vw, 56px);
}

.seo-card::before,
.accordion-card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 4px;
    background: var(--pp-gradient);
}

.seo-card h1 {
    max-width: 860px;
    margin: 20px 0 16px;
    font-size: clamp(2.2rem, 5vw, 4.4rem);
    line-height: 0.98;
    letter-spacing: -0.06em;
}

.seo-card p {
    max-width: 760px;
    margin: 0;
    color: var(--pp-muted);
    font-size: 1.08rem;
    line-height: 1.7;
}

.accordion-card {
    display: grid;
    gap: 12px;
    padding: clamp(22px, 4vw, 34px);
}

.accordion-item {
    border: 1px solid rgba(91, 126, 178, 0.18);
    border-radius: var(--pp-radius-lg);
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 12px 24px rgba(18, 43, 86, 0.06);
}

.accordion-item summary {
    cursor: pointer;
    padding: 18px 20px;
    color: var(--pp-ink);
    font-weight: 900;
    list-style: none;
}

.accordion-item summary::-webkit-details-marker {
    display: none;
}

.accordion-item summary::after {
    content: "+";
    float: right;
    color: var(--pp-blue);
    font-size: 1.2rem;
}

.accordion-item[open] summary::after {
    content: "-";
}

.accordion-item p {
    margin: 0;
    padding: 0 20px 20px;
    color: var(--pp-muted);
    line-height: 1.65;
}

@media (max-width: 640px) {
    .seo-card,
    .accordion-card {
        border-radius: 22px;
    }
}