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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #1a1a2e;
    line-height: 1.6;
}

/* Nav */
nav {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 16px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-inner {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 20px;
    font-weight: 700;
    color: #1a56db;
    text-decoration: none;
}
.nav-links { display: flex; gap: 24px; }
.nav-links a { color: #4b5563; text-decoration: none; font-size: 15px; }
.nav-links a:hover { color: #1a56db; }

/* Hero */
.hero {
    text-align: center;
    padding: 80px 24px 60px;
    background: linear-gradient(135deg, #1a56db 0%, #1e3a8a 100%);
    color: #fff;
}
.hero h1 { font-size: 2.5rem; line-height: 1.2; margin-bottom: 20px; }
.hero-sub { font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; opacity: 0.9; }

.cta-btn {
    display: inline-block;
    background: #fff;
    color: #1a56db;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: transform 0.2s;
}
.cta-btn:hover { transform: translateY(-2px); }

/* Features */
.features {
    max-width: 960px;
    margin: 0 auto;
    padding: 60px 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}
.feature { padding: 24px; border-radius: 12px; background: #f9fafb; }
.feature h3 { color: #1a56db; margin-bottom: 8px; font-size: 18px; }
.feature p { color: #4b5563; font-size: 15px; }

/* Topics */
.topics {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px 60px;
    text-align: center;
}
.topics h2 { margin-bottom: 24px; font-size: 1.5rem; }
.topics ul { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.topics li {
    background: #eff6ff;
    color: #1e40af;
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding: 60px 24px;
    background: #f9fafb;
}
.cta-section h2 { margin-bottom: 12px; font-size: 1.5rem; }
.cta-section p { max-width: 560px; margin: 0 auto 28px; color: #4b5563; }
.cta-section .cta-btn { background: #1a56db; color: #fff; }

/* Footer */
footer {
    padding: 40px 24px;
    border-top: 1px solid #e5e7eb;
    text-align: center;
}
.footer-inner { max-width: 960px; margin: 0 auto; }
.footer-links { display: flex; justify-content: center; gap: 24px; margin-bottom: 16px; flex-wrap: wrap; }
.footer-links a { color: #6b7280; text-decoration: none; font-size: 14px; }
.footer-links a:hover { color: #1a56db; }
footer p { color: #9ca3af; font-size: 13px; }

/* Page layout for subpages */
.page { max-width: 720px; margin: 0 auto; padding: 48px 24px 80px; }
.page h1 { font-size: 1.8rem; margin-bottom: 8px; }
.page .updated { color: #6b7280; font-size: 14px; margin-bottom: 32px; }
.page h2 { font-size: 1.2rem; margin-top: 32px; margin-bottom: 12px; color: #1e3a8a; }
.page h3 { font-size: 1rem; margin-top: 20px; margin-bottom: 8px; }
.page p, .page li { color: #374151; font-size: 15px; margin-bottom: 8px; }
.page ul { padding-left: 24px; margin-bottom: 16px; }

/* Support specific */
.faq-item { background: #f9fafb; border-radius: 8px; margin: 12px 0; overflow: hidden; }
.faq-q {
    padding: 16px 20px; cursor: pointer; font-weight: 500;
    display: flex; justify-content: space-between; align-items: center;
}
.faq-q:hover { background: #f3f4f6; }
.faq-a { padding: 0 20px 16px; display: none; }
.faq-a.open { display: block; }
.contact-box {
    background: #eff6ff; border-radius: 12px; padding: 32px; text-align: center; margin-top: 40px;
}
.contact-box a { color: #1a56db; font-weight: 600; }

@media (max-width: 600px) {
    .hero h1 { font-size: 1.6rem; }
    .hero { padding: 48px 20px 40px; }
    .nav-links { gap: 16px; }
    .nav-links a { font-size: 13px; }
}