/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #1E90FF;
    --primary-purple: #8B00FF;
    --dark-gray: #2C3E50;
    --light-gray: #F8F9FA;
    --white: #FFFFFF;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    background: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

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

.logo {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark-gray);
}

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

.nav-menu a {
    color: var(--dark-gray);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
}

.nav-menu a:hover {
    opacity: 0.7;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, rgba(30, 144, 255, 0.03) 0%, rgba(139, 0, 255, 0.03) 100%);
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--dark-gray);
}

.hero-subtitle {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    box-shadow: var(--shadow);
}

.btn-secondary:hover {
    background: var(--light-gray);
}

.btn-primary-large {
    padding: 18px 48px;
    font-size: 18px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary-large:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-text {
    padding: 8px 16px;
    color: var(--primary-blue);
    background: transparent;
    border-radius: 8px;
}

.btn-text:hover {
    background: rgba(30, 144, 255, 0.1);
}

/* Stats Section */
.stats {
    padding: 80px 0;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 20px;
    text-align: center;
    color: #666;
    margin-bottom: 48px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--white);
    padding: 48px 32px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.stat-number {
    font-size: 64px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
}

.stat-card p {
    color: #666;
    font-size: 16px;
}

.stats-note {
    text-align: center;
    font-size: 20px;
    font-weight: 600;
    color: var(--dark-gray);
}

/* Products Section */
.products {
    padding: 80px 0;
    background: var(--light-gray);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.product-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.product-card h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.product-subtitle {
    font-size: 18px;
    color: #666;
    margin-bottom: 24px;
}

.product-features {
    list-style: none;
    margin-bottom: 24px;
}

.product-features li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    color: var(--dark-gray);
}

.product-features li:last-child {
    border-bottom: none;
}

.product-highlight {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-blue);
    margin: 24px 0;
}

.product-actions {
    display: flex;
    gap: 16px;
}

/* CTA Section */
.cta {
    padding: 80px 0;
    text-align: center;
    background: var(--dark-gray);
    color: var(--white);
}

.cta-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-guarantees {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0.8;
}

/* Footer */
.footer {
    padding: 60px 0 30px;
    background: var(--dark-gray);
    color: var(--white);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.footer-tagline {
    opacity: 0.7;
}

.footer-contact p {
    margin-bottom: 8px;
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .stats-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
    }

    .nav-menu {
        display: none;
    }
}