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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background-color: #fcfcfc;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e5e5;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: #1a1a1a;
    font-size: 1.25rem;
    font-weight: bold;
}

.logo-icon {
    width: 24px;
    height: 24px;
}

.nav {
    display: flex;
    gap: 1.5rem;
}

.nav a {
    text-decoration: none;
    color: #666;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav a:hover {
    color: #3d3585;
}

.btn-subscribe {
    background: #3d3585;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-subscribe:hover {
    background: #322a6e;
}

/* Article Main */
.article-main {
    padding: 2rem 0;
}

.back-link {
    display: inline-block;
    color: #666;
    text-decoration: none;
    font-size: 0.875rem;
    margin-bottom: 2rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: #3d3585;
}

.article {
    max-width: 800px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e5e5e5;
}

.badge {
    display: inline-block;
    background: #f1f0f5;
    color: #3d3585;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.article h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 1.5rem;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.875rem;
    color: #666;
}

.article-content {
    font-size: 1.125rem;
    line-height: 1.8;
}

.article-content p {
    margin-bottom: 1.5rem;
}

/* Article CTA */
.article-cta {
    max-width: 800px;
    margin: 3rem auto;
    text-align: center;
    background: white;
    border: 1px solid #e5e5e5;
    padding: 3rem 2rem;
    border-radius: 12px;
}

.article-cta h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.article-cta p {
    color: #666;
    margin-bottom: 1.5rem;
}

.btn-primary {
    background: #3d3585;
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: #322a6e;
}

/* Footer */
.footer {
    border-top: 1px solid #e5e5e5;
    background: rgba(241, 240, 245, 0.3);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer p {
    color: #666;
    font-size: 0.875rem;
}

.footer a {
    color: #666;
    font-size: 0.875rem;
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: #3d3585;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    position: relative;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    font-weight: bold;
    color: #999;
    cursor: pointer;
}

.close:hover {
    color: #333;
}

.modal-content h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-description {
    color: #666;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    font-size: 1rem;
}

.checkbox-group {
    margin-bottom: 1rem;
}

.checkbox-group label {
    display: flex;
    align-items: start;
    gap: 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 0.25rem;
}

.checkbox-group a {
    color: #3d3585;
    text-decoration: none;
}

.checkbox-group a:hover {
    text-decoration: underline;
}

.btn-full {
    width: 100%;
}

/* Responsive */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .article h1 {
        font-size: 2rem;
    }

    .lead {
        font-size: 1.125rem;
    }

    .article-content {
        font-size: 1rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}