body {
    background: var(--background);
    color: var(--text);
}

.seo-hero {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 64px 24px 56px;
}

.seo-hero-inner {
    max-width: 1080px;
    margin: 0 auto;
}

.seo-eyebrow {
    display: inline-flex;
    padding: 7px 13px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: rgba(255, 255, 255, 0.92);
    font-size: 12px;
    font-weight: 800;
    margin-bottom: 16px;
}

.seo-hero h1 {
    max-width: 820px;
    font-size: clamp(34px, 5vw, 56px);
    line-height: 1.04;
    font-weight: 900;
    letter-spacing: 0;
    margin: 0 0 16px;
}

.seo-hero p {
    max-width: 760px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 17px;
    line-height: 1.75;
    margin: 0 0 24px;
}

.seo-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.seo-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 13px 20px;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 800;
    text-decoration: none;
}

.seo-btn.primary {
    background: var(--white);
    color: var(--primary-dark);
}

.seo-btn.secondary {
    background: rgba(255, 255, 255, 0.14);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.42);
}

.seo-shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: 38px 24px 76px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 310px;
    gap: 26px;
    align-items: start;
}

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

.seo-section {
    background: var(--white);
    border: 1px solid rgba(107, 70, 193, 0.16);
    border-radius: 8px;
    padding: 26px;
    margin-bottom: 18px;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.seo-section h2 {
    font-size: 24px;
    line-height: 1.2;
    font-weight: 900;
    letter-spacing: 0;
    color: var(--text);
    margin: 0 0 12px;
}

.seo-section h3 {
    font-size: 17px;
    font-weight: 850;
    color: var(--text);
    margin: 22px 0 8px;
}

.seo-section p,
.seo-section li {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
}

.seo-section p {
    margin: 0 0 12px;
}

.seo-section ul,
.seo-section ol {
    margin: 10px 0 14px 20px;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 16px;
}

.seo-mini-card {
    background: #fbfaff;
    border: 1px solid rgba(107, 70, 193, 0.16);
    border-radius: 8px;
    padding: 16px;
}

.seo-mini-card h3 {
    margin: 0 0 8px;
}

.seo-mini-card p {
    font-size: 14px;
}

.seo-mini-card a {
    color: var(--primary);
    font-weight: 800;
    text-decoration: none;
}

.keyword-map {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 14px 0 4px;
    overflow: hidden;
    border-radius: 8px;
}

.keyword-map th {
    background: var(--primary);
    color: var(--white);
    text-align: left;
    padding: 12px;
}

.keyword-map td {
    background: var(--white);
    border: 1px solid var(--border);
    padding: 12px;
    color: var(--text-light);
    vertical-align: top;
}

.example-pair {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 14px;
}

.example-box {
    border-radius: 8px;
    padding: 16px;
    border: 1px solid var(--border);
    background: #fff;
}

.example-box.bad {
    border-color: #fecaca;
    background: #fff7f7;
}

.example-box.good {
    border-color: rgba(107, 70, 193, 0.24);
    background: #fbfaff;
}

.example-label {
    display: block;
    font-size: 12px;
    font-weight: 900;
    color: var(--text);
    margin-bottom: 8px;
}

.seo-aside {
    position: sticky;
    top: 18px;
}

.aside-panel {
    background: var(--white);
    border: 1px solid rgba(107, 70, 193, 0.18);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 14px;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.aside-panel h2 {
    font-size: 17px;
    margin: 0 0 10px;
}

.aside-panel p,
.aside-panel li {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

.aside-panel ul {
    margin: 10px 0 0 18px;
}

.aside-link {
    display: block;
    padding: 11px 0;
    border-bottom: 1px solid var(--border);
    color: var(--primary);
    font-size: 14px;
    font-weight: 800;
    text-decoration: none;
}

.aside-link:last-child {
    border-bottom: none;
}

.note {
    background: #f8fafc;
    border-left: 4px solid var(--primary);
    padding: 14px 16px;
    border-radius: 0 8px 8px 0;
}

@media (max-width: 900px) {
    .seo-shell {
        grid-template-columns: 1fr;
    }

    .seo-aside {
        position: static;
    }
}

@media (max-width: 640px) {
    .seo-hero {
        padding: 42px 18px 38px;
    }

    .seo-shell {
        padding: 24px 16px 56px;
    }

    .seo-section {
        padding: 20px;
    }

    .seo-grid,
    .example-pair {
        grid-template-columns: 1fr;
    }

    .keyword-map {
        display: block;
        overflow-x: auto;
    }
}