:root {
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --secondary-color: #f8f9fa;
    --text-color: #333;
    --bg-color: #ffffff;
    --border-color: #e9ecef;
}

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

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
header {
    background-color: var(--bg-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

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

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 0.5rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    background-color: var(--secondary-color);
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.hero-content {
    flex: 1;
}

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

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #555;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.trust-badges {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: #666;
}

.hero-image {
    flex: 1;
    text-align: right;
}

.hero-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Features Section */
.features {
    padding: 4rem 0;
    text-align: center;
}

.features h2 {
    font-size: 2rem;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background: var(--secondary-color);
    border-radius: 10px;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Download Section */
.download-section {
    padding: 4rem 0;
    background-color: var(--primary-color);
    color: white;
    text-align: center;
}

.download-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.download-section p {
    margin-bottom: 2rem;
}

.download-options {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.download-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: white;
    color: var(--text-color);
    padding: 1.5rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    min-width: 200px;
    transition: transform 0.3s;
}

.download-btn:hover {
    transform: translateY(-5px);
}

.download-btn span {
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.download-btn small {
    color: #666;
}

.notice {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* SEO Text Section */
.seo-text {
    padding: 3rem 0;
    background-color: var(--secondary-color);
}

.seo-text h3 {
    margin-bottom: 1rem;
}

.seo-text p {
    margin-bottom: 1rem;
    color: #555;
}

/* Page Title for Subpages */
.page-title {
    padding: 3rem 0;
    background-color: var(--secondary-color);
    text-align: center;
}

.page-title h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

/* Feature Detail */
.feature-detail {
    padding: 4rem 0;
}

.feature-row {
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
}

.feature-row:last-child {
    border-bottom: none;
}

.feature-text h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* FAQ Content */
.faq-content {
    padding: 4rem 0;
}

.faq-item {
    margin-bottom: 2rem;
    background: var(--secondary-color);
    padding: 1.5rem;
    border-radius: 8px;
}

.faq-item h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

/* About Content */
.about-content {
    padding: 4rem 0;
}

.about-text {
    margin-bottom: 2.5rem;
}

.about-text h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-text ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

/* Call to Action */
.call-to-action {
    padding: 4rem 0;
    background-color: var(--secondary-color);
}

.center-text {
    text-align: center;
}

.center-text h2 {
    margin-bottom: 1rem;
}

.center-text p {
    margin-bottom: 2rem;
}

/* Footer */
footer {
    background-color: #222;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-grid h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-grid p {
    color: #aaa;
}

.footer-grid ul {
    list-style: none;
}

.footer-grid ul li {
    margin-bottom: 0.5rem;
}

.footer-grid ul a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-grid ul a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid #444;
    color: #888;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-direction: column;
    }
    
    .nav-bar {
        flex-direction: column;
        gap: 1rem;
    }
}