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

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #eaebf0; /* Light Gray Background */
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

a:hover {
    opacity: 0.8;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 5px;
}

.en-title {
    font-size: 0.9rem;
    color: #888;
    letter-spacing: 0.05em;
    font-weight: 500;
    display: block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    text-align: left;
    line-height: 1.2;
}

.btn-store {
    background-color: #000;
    color: #fff;
    padding: 10px 24px;
    font-size: 1.2rem;
    border: 1px solid #000;
}

.btn-store i {
    font-size: 1.8rem;
    margin-right: 10px;
}

.btn-small {
    font-size: 0.7rem;
    font-weight: normal;
    display: block;
}

/* Header */
.header {
    padding: 40px 0 20px;
    text-align: center;
}

.header .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #333;
}

.header-stars {
    color: #ffd700; /* Gold */
    font-size: 1rem;
    letter-spacing: 2px;
}

/* Hero Section */
.hero {
    padding: 40px 0 0;
    text-align: center;
    overflow: hidden; /* Hide bottom part of image if needed */
}

.hero-text {
    margin-bottom: 40px;
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.4;
}

.hero-sub {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.hero-desc {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 30px;
    font-size: 0.8rem;
}

.hero-image {
    max-width: 500px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: #eaebf0; /* Match body bg */
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: #fff; /* White Card */
    padding: 30px 20px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.feature-icon-wrapper {
    font-size: 2rem;
    color: #ffd700;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.feature-summary {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
    padding-bottom: 15px;
}

.feature-list {
    text-align: left;
    font-size: 0.85rem;
    color: #555;
}

.feature-list li {
    margin-bottom: 10px;
    padding-left: 1.2em;
    position: relative;
    line-height: 1.5;
}

.feature-list li::before {
    content: '★';
    position: absolute;
    left: 0;
    color: #ffd700;
    font-size: 0.8em;
    top: 0.2em;
}

/* How To Use Section */
.usage {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.step-card {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    text-align: left;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.step-icon {
    font-size: 2rem;
    margin-bottom: 15px;
    color: #333;
}

.step-number {
    font-weight: 700;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.step-card p {
    font-size: 0.85rem;
    color: #666;
}

/* Price Section */
.price {
    padding: 80px 0;
    background-color: #fff;
}

.price-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.price-card {
    flex: 1;
    max-width: 400px;
    padding: 40px;
    border-radius: 16px;
    border: 1px solid #eee;
    position: relative;
    display: flex;
    flex-direction: column;
}

.price-card h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.price-desc {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 30px;
}

.price-features {
    margin-bottom: auto;
    padding-left: 0;
}

.price-features li {
    margin-bottom: 15px;
    font-size: 0.9rem;
    position: relative;
    padding-left: 25px;
}

.price-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #333;
}

.price-amount {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 30px;
}

.price-premium {
    background-color: #333;
    color: #fff;
    border: none;
}

.price-premium .price-desc {
    color: #aaa;
}

.price-premium .price-features li::before {
    color: #4caf50; /* Green check for premium */
}

.price-sub-amount {
    font-size: 0.8rem;
    opacity: 0.7;
}

.unit {
    font-size: 0.9rem;
    font-weight: normal;
}

/* Use Case Section */
.usecase {
    padding: 80px 0;
    background-color: #eaebf0;
}

.usecase-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.usecase-item {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.usecase-icon {
    font-size: 2rem;
    margin-bottom: 15px;
}

.usecase-text h3 {
    font-size: 0.9rem;
    margin-bottom: 5px;
    font-weight: 700;
}

.usecase-text p {
    font-size: 0.75rem;
    color: #666;
    line-height: 1.4;
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #eaebf0;
    margin-bottom: 10px;
    border-radius: 8px;
    overflow: hidden;
}

.faq-item summary {
    padding: 15px 20px;
    font-weight: 500;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-content {
    padding: 0 20px 20px;
    font-size: 0.85rem;
    color: #555;
}

/* Footer CTA */
.footer-cta {
    padding: 100px 0;
    text-align: center;
    background-color: #eaebf0;
}

.footer-stars {
    color: #ffd700;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.footer-cta h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.footer-cta p {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 30px;
}

/* Footer */
.footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0 20px;
    text-align: center;
}

.footer-logo {
    font-size: 1rem;
    margin-bottom: 20px;
}

.footer-links {
    margin-bottom: 30px;
}

.footer-links a {
    font-size: 0.8rem;
    color: #ccc;
}

.copyright {
    font-size: 0.7rem;
    color: #777;
}

/* Responsive */
@media (max-width: 900px) {
    .features-grid,
    .steps-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .usecase-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .price-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .price-card {
        width: 100%;
    }
}