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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
        sans-serif;
    color: #333;
    line-height: 1.6;
    background: #f5f7fa;
}

.container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.logo {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.tagline {
    font-size: 1.15rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Features */
.features {
    padding: 60px 0;
}

.features h2,
.contact h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
    color: #1a73e8;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.feature-card {
    background: #fff;
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: #1a73e8;
}

.feature-card p {
    font-size: 0.9rem;
    color: #666;
}

/* Pricing */
.pricing {
    padding: 0 0 60px;
}

.pricing h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
    color: #1a73e8;
}

.pricing-card {
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    max-width: 360px;
    margin: 0 auto;
    border: 2px solid #1a73e8;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: #1a73e8;
    line-height: 1.2;
}

.price-unit {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 12px;
}

.price-desc {
    font-size: 0.95rem;
    color: #888;
    margin-top: 8px;
}

/* Contact */
.contact {
    padding: 0 0 80px;
}

.contact-desc {
    text-align: center;
    font-size: 1.05rem;
    color: #555;
    margin-bottom: 32px;
}

.qr-wrapper {
    text-align: center;
    margin-bottom: 16px;
}

.qr-code {
    width: 240px;
    height: 240px;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    object-fit: contain;
    background: #fff;
    padding: 8px;
}

.contact-hint {
    text-align: center;
    color: #e65100;
    font-weight: 500;
    margin-top: 12px;
}

/* Footer */
footer {
    background: #263238;
    color: #90a4ae;
    text-align: center;
    padding: 24px 0;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 40px 0;
    }

    .logo {
        font-size: 1.8rem;
    }

    .tagline {
        font-size: 0.95rem;
    }

    .features {
        padding: 40px 0;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .qr-code {
        width: 200px;
        height: 200px;
    }
}