:root {
    --brand: #2563eb;
    --brand-dark: #1d4ed8;
    --ink: #1d2024;
    --muted: #6b7280;
    --bg: #f7f9fb;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--ink);
    background: #fff;
    line-height: 1.6;
}

.site-header {
    border-bottom: 1px solid #e5e7eb;
    background: #fff;
    position: sticky;
    top: 0;
}

.site-header .inner {
    max-width: 1024px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
}

.logo span { color: var(--brand); }

.site-nav a {
    color: var(--muted);
    text-decoration: none;
    margin-left: 24px;
    font-size: 15px;
}

.site-nav a:hover, .site-nav a.active { color: var(--brand); }

.hero {
    background: var(--bg);
    text-align: center;
    padding: 96px 24px;
}

.hero h1 {
    font-size: 42px;
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero p {
    font-size: 18px;
    color: var(--muted);
    max-width: 560px;
    margin: 0 auto 32px;
}

.button {
    display: inline-block;
    background: var(--brand);
    color: #fff;
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
}

.button:hover { background: var(--brand-dark); }

.features {
    max-width: 1024px;
    margin: 0 auto;
    padding: 72px 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.feature h3 { margin-bottom: 8px; font-size: 18px; }
.feature p { color: var(--muted); font-size: 15px; }

.blog-main {
    max-width: 1024px;
    margin: 0 auto;
    padding: 48px 24px;
}

.site-footer {
    border-top: 1px solid #e5e7eb;
    background: var(--bg);
    text-align: center;
    padding: 32px 24px;
    color: var(--muted);
    font-size: 14px;
}