.seo-aep {
    --seo-aep-blue: #2563eb;
    --seo-aep-blue-dark: #1d4ed8;
    --seo-aep-navy: #0f2747;
    --seo-aep-ink: #0f172a;
    --seo-aep-text: #334155;
    --seo-aep-muted: #64748b;
    --seo-aep-line: #dbe4f0;
    --seo-aep-soft: #f6f9fe;
    --seo-aep-card: #ffffff;
    background: #fff;
    color: var(--seo-aep-text);
}

.seo-aep * {
    box-sizing: border-box;
}

.seo-aep-wrap {
    width: min(1080px, calc(100% - 32px));
    margin: 0 auto;
}

.seo-aep-hero {
    padding: 58px 0 50px;
    background:
        radial-gradient(circle at 88% 8%, rgba(37, 99, 235, .18), transparent 28%),
        linear-gradient(135deg, #f8fbff 0%, #eef5ff 52%, #ffffff 100%);
    border-bottom: 1px solid #e2e8f0;
}

.seo-aep-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 22px;
    color: var(--seo-aep-muted);
    font-size: .84rem;
}

.seo-aep-breadcrumb a {
    color: var(--seo-aep-blue-dark);
    font-weight: 700;
    text-decoration: none;
}

.seo-aep-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    padding: 8px 13px;
    border: 1px solid rgba(37, 99, 235, .18);
    border-radius: 999px;
    background: #eff6ff;
    color: var(--seo-aep-blue-dark);
    font-size: .76rem;
    font-weight: 850;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.seo-aep-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(290px, 380px);
    gap: 34px;
    align-items: center;
}

.seo-aep h1 {
    max-width: 820px;
    margin: 0 0 16px;
    color: var(--seo-aep-ink);
    font-size: clamp(2.1rem, 5vw, 4rem);
    line-height: 1.04;
    letter-spacing: -.045em;
}

.seo-aep-lead {
    max-width: 760px;
    margin: 0 0 24px;
    color: #475569;
    font-size: clamp(1rem, 2vw, 1.18rem);
    line-height: 1.72;
}

.seo-aep-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.seo-aep-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 13px 20px;
    border-radius: 14px;
    font-size: .96rem;
    font-weight: 850;
    text-align: center;
    text-decoration: none;
    transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}

.seo-aep-btn:hover {
    transform: translateY(-2px);
    text-decoration: none;
}

.seo-aep-btn--primary {
    background: linear-gradient(135deg, var(--seo-aep-blue-dark), var(--seo-aep-blue));
    color: #fff;
    box-shadow: 0 16px 34px rgba(37, 99, 235, .26);
}

.seo-aep-btn--secondary {
    border: 1px solid rgba(30, 58, 95, .18);
    background: #fff;
    color: var(--seo-aep-navy);
    box-shadow: 0 12px 26px rgba(15, 23, 42, .07);
}

.seo-aep-side-card {
    padding: 22px;
    border: 1px solid rgba(148, 163, 184, .28);
    border-radius: 24px;
    background: rgba(255, 255, 255, .88);
    box-shadow: 0 22px 54px rgba(15, 39, 71, .14);
}

.seo-aep-side-card strong {
    display: block;
    margin-bottom: 12px;
    color: var(--seo-aep-navy);
    font-size: 1.05rem;
}

.seo-aep-side-card ul {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.seo-aep-side-card li {
    display: flex;
    gap: 9px;
    color: #475569;
    font-size: .9rem;
    line-height: 1.45;
}

.seo-aep-side-card li:before {
    content: "";
    flex: 0 0 auto;
    width: 8px;
    height: 8px;
    margin-top: .48em;
    border-radius: 999px;
    background: var(--seo-aep-blue);
}

.seo-aep-section {
    padding: 56px 0;
}

.seo-aep-section--soft {
    background: var(--seo-aep-soft);
}

.seo-aep-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 290px;
    gap: 34px;
    align-items: start;
}

.seo-aep-toc {
    position: sticky;
    top: 90px;
    padding: 18px;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 12px 30px rgba(15, 23, 42, .05);
}

.seo-aep-toc strong {
    display: block;
    margin-bottom: 11px;
    color: var(--seo-aep-navy);
    font-size: .88rem;
}

.seo-aep-toc a {
    display: block;
    padding: 9px 0;
    border-top: 1px solid #f1f5f9;
    color: #475569;
    font-size: .86rem;
    font-weight: 700;
    line-height: 1.35;
    text-decoration: none;
}

.seo-aep-toc a:hover {
    color: var(--seo-aep-blue-dark);
}

.seo-aep-article {
    min-width: 0;
}

.seo-aep-block {
    margin-bottom: 34px;
    padding: 28px;
    border: 1px solid #e2e8f0;
    border-radius: 24px;
    background: #fff;
    box-shadow: 0 16px 44px rgba(15, 23, 42, .055);
    scroll-margin-top: 92px;
}

.seo-aep-block h2 {
    margin: 0 0 14px;
    color: var(--seo-aep-ink);
    font-size: clamp(1.42rem, 3vw, 2rem);
    line-height: 1.16;
    letter-spacing: -.026em;
}

.seo-aep-block h3 {
    margin: 22px 0 10px;
    color: var(--seo-aep-navy);
    font-size: 1.08rem;
}

.seo-aep-block p {
    margin: 0 0 15px;
    color: #475569;
    font-size: .98rem;
    line-height: 1.78;
}

.seo-aep-block p:last-child {
    margin-bottom: 0;
}

.seo-aep-list,
.seo-aep-checks {
    display: grid;
    gap: 11px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.seo-aep-list li,
.seo-aep-checks li {
    position: relative;
    padding-left: 25px;
    color: #475569;
    font-size: .95rem;
    line-height: 1.58;
}

.seo-aep-list li:before,
.seo-aep-checks li:before {
    content: "";
    position: absolute;
    top: .55em;
    left: 0;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--seo-aep-blue);
}

.seo-aep-cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 20px;
}

.seo-aep-card {
    padding: 18px;
    border: 1px solid #dbeafe;
    border-radius: 18px;
    background: linear-gradient(180deg, #fff, #f8fbff);
}

.seo-aep-card strong {
    display: block;
    margin-bottom: 7px;
    color: var(--seo-aep-navy);
    font-size: .98rem;
}

.seo-aep-card span {
    display: block;
    color: #64748b;
    font-size: .9rem;
    line-height: 1.52;
}

.seo-aep-table-wrap {
    overflow-x: auto;
    margin-top: 18px;
    border: 1px solid #e2e8f0;
    border-radius: 18px;
    background: #fff;
}

.seo-aep-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
}

.seo-aep-table th {
    padding: 14px 16px;
    background: var(--seo-aep-navy);
    color: #fff;
    font-size: .84rem;
    text-align: left;
}

.seo-aep-table td {
    padding: 14px 16px;
    border-top: 1px solid #e2e8f0;
    color: #475569;
    font-size: .92rem;
    line-height: 1.48;
    vertical-align: top;
}

.seo-aep-callout,
.seo-aep-disclaimer {
    margin-top: 18px;
    padding: 16px 18px;
    border-radius: 18px;
    line-height: 1.62;
}

.seo-aep-callout {
    border: 1px solid #bfdbfe;
    background: #eff6ff;
    color: #1e3a5f;
}

.seo-aep-disclaimer {
    border: 1px solid #fed7aa;
    background: #fff7ed;
    color: #7c2d12;
}

.seo-aep-related {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.seo-aep-related-card {
    display: flex;
    min-height: 100%;
    flex-direction: column;
    padding: 20px;
    border: 1px solid #dbeafe;
    border-radius: 20px;
    background: #fff;
    color: inherit;
    text-decoration: none;
    box-shadow: 0 12px 32px rgba(15, 23, 42, .05);
    transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}

.seo-aep-related-card:hover {
    border-color: #93c5fd;
    box-shadow: 0 16px 38px rgba(37, 99, 235, .12);
    transform: translateY(-2px);
    text-decoration: none;
}

.seo-aep-related-card strong {
    margin-bottom: 9px;
    color: var(--seo-aep-navy);
    line-height: 1.3;
}

.seo-aep-related-card span {
    color: #64748b;
    font-size: .9rem;
    line-height: 1.54;
}

.seo-aep-faq {
    display: grid;
    gap: 12px;
}

.seo-aep-faq details {
    border: 1px solid #e2e8f0;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 10px 28px rgba(15, 23, 42, .05);
    overflow: hidden;
}

.seo-aep-faq summary {
    cursor: pointer;
    padding: 18px 20px;
    color: var(--seo-aep-navy);
    font-weight: 850;
    line-height: 1.4;
}

.seo-aep-faq details p {
    margin: 0;
    padding: 0 20px 20px;
    color: #64748b;
    line-height: 1.65;
}

.seo-aep-final {
    padding: 56px 0;
    background: linear-gradient(135deg, var(--seo-aep-navy), var(--seo-aep-blue-dark));
    color: #fff;
    text-align: center;
}

.seo-aep-final h2 {
    max-width: 760px;
    margin: 0 auto 12px;
    color: #fff;
    font-size: clamp(1.65rem, 4vw, 2.8rem);
    line-height: 1.12;
    letter-spacing: -.035em;
}

.seo-aep-final p {
    max-width: 660px;
    margin: 0 auto 24px;
    color: #dbeafe;
    line-height: 1.7;
}

.seo-aep-final .seo-aep-actions {
    justify-content: center;
}

.seo-aep-final .seo-aep-btn--secondary {
    border-color: rgba(255, 255, 255, .28);
    background: rgba(255, 255, 255, .1);
    color: #fff;
}

@media (max-width: 920px) {
    .seo-aep-hero__grid,
    .seo-aep-layout {
        grid-template-columns: 1fr;
    }

    .seo-aep-toc {
        position: static;
        order: -1;
    }

    .seo-aep-related {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 680px) {
    .seo-aep-wrap {
        width: min(100% - 24px, 1080px);
    }

    .seo-aep-hero {
        padding: 42px 0 44px;
    }

    .seo-aep-section {
        padding: 42px 0;
    }

    .seo-aep-actions,
    .seo-aep-btn {
        width: 100%;
    }

    .seo-aep-block {
        padding: 22px;
        border-radius: 20px;
    }

    .seo-aep-cards,
    .seo-aep-related {
        grid-template-columns: 1fr;
    }

    .seo-aep-side-card {
        padding: 20px;
    }
}