:root {
    --primary-color: #6366f1;
    --primary-hover: #5b21b6;
    --secondary-color: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --page-max-width: 1200px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: #ffffff;
}

.header {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: var(--page-max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.auth-buttons {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100%;
    background: white;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
}

.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    padding: 20px;
    gap: 16px;
}

.mobile-menu-nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 12px;
    border-radius: 8px;
    transition: background 0.2s;
}

.mobile-menu-nav a:hover {
    background: var(--secondary-color);
}

.mobile-menu-auth {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.main-content {
    max-width: var(--page-max-width);
    margin: 0 auto;
    padding: 40px 24px;
}

.hero-section {
    text-align: center;
    margin-bottom: 48px;
}

.hero-section h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.hero-section p {
    font-size: 20px;
    color: var(--text-secondary);
}

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

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow);
}

.faq-item.active {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.faq-question {
    padding: 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: background 0.2s;
}

.faq-question:hover {
    background: var(--secondary-color);
}

.faq-question h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
}

.faq-question i {
    color: var(--primary-color);
    font-size: 14px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 2000px;
}

.faq-answer-content {
    padding: 0 24px 24px 24px;
}

.faq-answer p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer strong {
    color: var(--text-primary);
    font-weight: 600;
}

.faq-answer ul {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-secondary);
}

.faq-answer li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.faq-answer li:last-child {
    margin-bottom: 0;
}

.footer {
    background: var(--text-primary);
    color: white;
    padding: 40px 24px;
    margin-top: 80px;
}

.footer-container {
    max-width: var(--page-max-width);
    margin: 0 auto;
}

.disclaimer {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.disclaimer p {
    margin: 0;
    font-size: 14px;
    color: #94a3b8;
}

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

.footer-left p,
.footer-right p {
    margin: 0;
    font-size: 14px;
    color: #94a3b8;
}

.footer-right a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-right a:hover {
    color: white;
}

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

    .auth-buttons {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .main-content {
        padding: 24px 16px;
    }

    .hero-section h1 {
        font-size: 32px;
    }

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

    .faq-question {
        padding: 20px 16px;
    }

    .faq-question h3 {
        font-size: 16px;
    }

    .faq-answer-content {
        padding: 0 16px 20px 16px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}