:root {
    --seo-bg: #fff8fb;
    --seo-card: #ffffff;
    --seo-text: #2e2933;
    --seo-muted: #6f6875;
    --seo-accent: #d94c79;
    --seo-accent-dark: #b93762;
    --seo-border: #f0dbe3;
    --seo-shadow: 0 12px 35px rgba(58, 29, 44, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--seo-bg);
    color: var(--seo-text);
    line-height: 1.65;
}
a { color: var(--seo-accent-dark); }
.seo-shell { width: min(1040px, calc(100% - 32px)); margin: 0 auto; }
.seo-topbar {
    background: rgba(255,255,255,.95);
    border-bottom: 1px solid var(--seo-border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.seo-topbar .seo-shell {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.seo-brand {
    font-size: 1.22rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--seo-text);
}
.seo-nav { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.seo-nav a { text-decoration: none; font-weight: 600; }
.seo-nav .seo-register {
    padding: 9px 16px;
    border-radius: 999px;
    background: var(--seo-accent);
    color: white;
}
.seo-hero { padding: 64px 0 28px; }
.seo-hero-card {
    background: var(--seo-card);
    border: 1px solid var(--seo-border);
    border-radius: 28px;
    box-shadow: var(--seo-shadow);
    padding: clamp(26px, 5vw, 54px);
}
.seo-kicker {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--seo-accent-dark);
    font-weight: 700;
}
h1 {
    margin: 0 0 18px;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.08;
}
.seo-lead {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--seo-muted);
    max-width: 790px;
    margin-bottom: 24px;
}
.seo-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.seo-btn {
    display: inline-block;
    padding: 12px 20px;
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
    border: 1px solid var(--seo-border);
    background: white;
}
.seo-btn-primary {
    background: var(--seo-accent);
    color: white;
    border-color: var(--seo-accent);
}
.seo-content { padding: 18px 0 54px; }
.seo-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 24px;
}
.seo-article, .seo-side {
    background: var(--seo-card);
    border: 1px solid var(--seo-border);
    border-radius: 22px;
    box-shadow: var(--seo-shadow);
}
.seo-article { padding: clamp(24px, 4vw, 42px); }
.seo-article h2 { margin-top: 32px; line-height: 1.25; }
.seo-article h2:first-child { margin-top: 0; }
.seo-side { padding: 22px; align-self: start; position: sticky; top: 84px; }
.seo-side h2 { margin-top: 0; font-size: 1.12rem; }
.seo-side ul { margin: 0; padding-left: 18px; }
.seo-side li + li { margin-top: 10px; }
.seo-note {
    margin-top: 30px;
    padding: 18px;
    border-radius: 16px;
    background: #fff1f6;
    border: 1px solid var(--seo-border);
}
.seo-footer {
    border-top: 1px solid var(--seo-border);
    background: white;
    color: var(--seo-muted);
    padding: 28px 0;
    font-size: .95rem;
}
@media (max-width: 760px) {
    .seo-topbar .seo-shell { padding: 10px 0; }
    .seo-nav a:not(.seo-register) { display: none; }
    .seo-hero { padding-top: 30px; }
    .seo-grid { grid-template-columns: 1fr; }
    .seo-side { position: static; }
}