:root {
    --primary-color: #1a73e8; /* Google Blue */
    --secondary-color: #ea4335; /* Google Red */
    --text-color: #333333;
    --light-text: #666666;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 10px 15px rgba(0, 0, 0, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Header & Navigation */
header {
    background-color: var(--card-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: bold;
    font-size: 1.5rem;
    color: var(--text-color);
    text-decoration: none;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    margin-left: 20px;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1a73e8 0%, #4285f4 100%);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto 30px;
}

.cta-button {
    display: inline-block;
    background-color: white;
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Mall Module (Products) */
.mall-section {
    max-width: 1200px;
    margin: 50px auto;
    padding: 0 20px;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--text-color);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.product-image {
    height: 180px;
    background-color: #eeeeee;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
}

.product-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-desc {
    font-size: 0.9rem;
    color: var(--light-text);
    margin-bottom: 15px;
    flex-grow: 1;
}

.product-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
}

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

.buy-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.2s;
}

.buy-btn:hover {
    background-color: #1557b0;
}

/* Modular Content Styles (Replacing old content-section) */
.mod-bg-light { background-color: #f8f9fa; }
.mod-bg-white { background-color: #ffffff; }

.section-padding { padding: 60px 20px; }

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

.center-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 50px;
    color: var(--text-color);
    position: relative;
    padding-bottom: 15px;
}

.center-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* Info Grid (2 Columns) */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    align-items: start;
}

.info-text-col h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #333;
}

.info-text-col p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8;
}

.info-card-box {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-top: 5px solid var(--secondary-color);
}

/* Steps Cards (3 Columns) */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.step-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    border: 1px solid #eee;
    transition: transform 0.3s;
    position: relative;
    overflow: hidden;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.step-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    background: #e8f0fe;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-card h3 { margin-bottom: 15px; }

/* Checklist / Guide Style */
.guide-wrapper {
    background: #eef2f8;
    border-radius: 20px;
    padding: 50px;
}

.check-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

.check-item {
    background: white;
    padding: 20px 25px;
    border-radius: 10px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.check-mark {
    color: #34a853;
    font-weight: bold;
    font-size: 1.2rem;
}

/* FAQ Grid */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 25px;
}

.faq-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    padding: 30px;
    border-radius: 10px;
}

.faq-question {
    font-weight: bold;
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: #202124;
    display: flex;
    align-items: center;
    gap: 10px;
}

.q-icon {
    color: var(--primary-color);
    background: #e8f0fe;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.9rem;
}

.faq-answer {
    color: #5f6368;
    line-height: 1.6;
}

/* Features Band */
.features {
    background-color: white;
    padding: 60px 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.feature-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-item h3 {
    margin-bottom: 10px;
}

/* Footer */
footer {
    background-color: #202124;
    color: #bdc1c6;
    padding: 60px 20px 20px;
    margin-top: 60px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: white;
    margin-bottom: 20px;
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #bdc1c6;
    text-decoration: none;
}

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

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #3c4043;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none; 
    }
    
    /* Mobile Navigation (Simple fallback) */
    .navbar {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
        margin-left: 0;
    }
    
    .nav-links a {
        margin: 0;
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }

    /* Adjust Modules for Mobile */
    .section-padding { padding: 40px 20px; }
    
    .center-title {
        font-size: 1.6rem;
        margin-bottom: 30px;
    }
    
    .info-card-box {
        padding: 25px;
    }
    
    .guide-wrapper {
        padding: 25px;
    }
    
    .check-list {
        grid-template-columns: 1fr; /* Stack vertically on mobile */
    }
    
    .check-item {
        padding: 15px;
        font-size: 0.95rem;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .check-list {
        grid-template-columns: 1fr;
    }
}