:root {
    --brand-accent: rgb(84, 131, 219);
    --brand-cta: rgb(69, 118, 204);
    --brand-dark: rgb(40, 50, 89);
    --text-main: #111827;
    --text-muted: #4b5563;
    --text-light: #6b7280;
    --bg-gray: #f9fafb;
    --border-color: #e5e7eb;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: var(--text-main);
    background: #ffffff;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav-wrapper {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
}

nav {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-right {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 36px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
}

.nav-links a,
.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s ease;
}

.nav-links a:hover,
.footer-col a:hover {
    color: var(--brand-cta);
}

.btn-login {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--brand-cta);
    border: 2px solid var(--brand-cta);
    border-radius: 8px;
    padding: 8px 16px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
}

.btn-login img {
    width: 18px;
    height: auto;
}

.seo-hero {
    padding: 88px 0 72px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border-bottom: 1px solid var(--border-color);
}

.seo-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
    gap: 46px;
    align-items: center;
}

.breadcrumb {
    display: inline-flex;
    color: var(--brand-cta);
    background: #eef4ff;
    border: 1px solid rgba(84, 131, 219, 0.18);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 22px;
}

.seo-hero h1 {
    max-width: 840px;
    font-size: 54px;
    line-height: 1.05;
    letter-spacing: -1.5px;
    margin-bottom: 22px;
    color: #0f172a;
}

.seo-hero p {
    max-width: 760px;
    color: #475569;
    font-size: 18px;
}

.hero-media {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 22px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
}

.hero-media img {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    object-position: top center;
}

.seo-content {
    padding: 72px 0;
}

.content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 48px;
    align-items: start;
}

.article-card {
    display: grid;
    gap: 34px;
}

.article-section {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 34px;
}

.article-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.article-section h2 {
    font-size: 30px;
    line-height: 1.2;
    letter-spacing: -0.6px;
    color: #0f172a;
    margin-bottom: 14px;
}

.article-section h3 {
    font-size: 20px;
    color: #0f172a;
    margin: 24px 0 10px;
}

.article-section p {
    color: #475569;
    margin-bottom: 14px;
}

.article-section ul {
    display: grid;
    gap: 10px;
    margin: 16px 0 0;
    padding-left: 20px;
    color: #334155;
}

.insight-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 20px;
}

.insight-card {
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    background: #ffffff;
}

.insight-card strong {
    display: block;
    color: #0f172a;
    margin-bottom: 8px;
    font-size: 15px;
}

.insight-card span {
    display: block;
    color: #64748b;
    font-size: 14px;
    line-height: 1.55;
}

.process-list {
    counter-reset: step;
    display: grid;
    gap: 14px;
    margin-top: 18px;
}

.process-step {
    counter-increment: step;
    display: grid;
    grid-template-columns: 38px 1fr;
    gap: 14px;
    align-items: start;
}

.process-step::before {
    content: counter(step);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: #eef4ff;
    color: var(--brand-cta);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.process-step strong {
    display: block;
    color: #0f172a;
    margin-bottom: 3px;
}

.process-step span {
    color: #64748b;
    font-size: 14px;
}

.seo-faq {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.seo-faq details {
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 16px 18px;
    background: #ffffff;
}

.seo-faq summary {
    cursor: pointer;
    font-weight: 800;
    color: #0f172a;
    list-style: none;
}

.seo-faq summary::-webkit-details-marker {
    display: none;
}

.seo-faq p {
    margin: 12px 0 0;
    font-size: 14px;
}

.sidebar {
    position: sticky;
    top: 24px;
    display: grid;
    gap: 18px;
}

.side-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 12px 34px rgba(15, 23, 42, 0.04);
}

.side-card.blue {
    background: var(--brand-cta);
    color: #ffffff;
    border-color: var(--brand-cta);
}

.side-card h2,
.side-card h3 {
    font-size: 20px;
    line-height: 1.25;
    margin-bottom: 12px;
}

.side-card p {
    color: #64748b;
    font-size: 14px;
}

.side-card.blue p {
    color: rgba(255, 255, 255, 0.9);
}

.side-links {
    display: grid;
    gap: 10px;
    margin-top: 16px;
}

.side-links a {
    color: var(--brand-cta);
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
}

.side-card.blue .side-links a {
    color: #ffffff;
}

.cta-section {
    padding: 0 0 84px;
}

.cta-card {
    border-radius: 28px;
    background: var(--brand-cta);
    color: #ffffff;
    padding: 52px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
}

.cta-card h2 {
    font-size: 34px;
    line-height: 1.15;
    margin-bottom: 10px;
}

.cta-card p {
    color: rgba(255, 255, 255, 0.9);
    max-width: 620px;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 22px;
    border-radius: 999px;
    background: #ffffff;
    color: var(--brand-cta);
    text-decoration: none;
    font-weight: 800;
    white-space: nowrap;
}

.site-footer {
    padding: 56px 0 42px;
    border-top: 1px solid var(--border-color);
    background: #ffffff;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.7fr repeat(5, 1fr);
    gap: 32px;
}

.footer-socials {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.footer-socials svg {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
}

.footer-settings {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-main);
    background: #ffffff;
    font-family: inherit;
    font-weight: 500;
    font-size: 13px;
    margin-bottom: 16px;
}

.footer-logo img {
    height: 32px;
    margin-bottom: 18px;
}

.footer-col h4 {
    font-size: 15px;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
    display: grid;
    gap: 10px;
}

.footer-company-info {
    color: var(--text-light);
    font-size: 12px;
    line-height: 1.6;
}

.footer-company-info span {
    display: block;
    margin-top: 4px;
}

@media (max-width: 960px) {
    .nav-links {
        display: none;
    }

    .seo-hero-grid {
        grid-template-columns: 1fr;
    }

    .seo-hero h1 {
        font-size: 40px;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .cta-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .seo-hero {
        padding: 58px 0 52px;
    }

    .seo-hero h1 {
        font-size: 34px;
    }

    .seo-hero p {
        font-size: 16px;
    }

    .article-section h2 {
        font-size: 25px;
    }

    .insight-grid {
        grid-template-columns: 1fr;
    }

    .cta-card {
        padding: 34px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}