:root {
    --bg-primary: #132033;
    --bg-secondary: #1a2a40;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #22d3ee;
    --accent-hover: #06b6d4;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 24px;
}

.logo {
    width: 120px;
    height: 120px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.tagline {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 16px;
}

.description {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.cta-button {
    display: inline-block;
    background: var(--accent);
    color: var(--bg-primary);
    padding: 16px 48px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    margin-bottom: 40px;
}

.cta-button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(34, 211, 238, 0.3);
}

.qr-section {
    margin-top: 20px;
}

.qr-code {
    width: 150px;
    height: 150px;
    border-radius: 12px;
    background: white;
    padding: 8px;
}

.qr-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Sections */
.section {
    padding: 80px 24px;
}

.alt-bg {
    background: var(--bg-secondary);
}

.section h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 48px;
    color: var(--accent);
}

/* Features */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.feature {
    text-align: center;
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: 16px;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.feature h3 {
    margin-bottom: 12px;
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Steps */
.steps {
    list-style: none;
    max-width: 600px;
    margin: 0 auto;
}

.steps li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 32px;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--accent);
    color: var(--bg-primary);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-right: 20px;
}

.step-content h4 {
    margin-bottom: 4px;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Caution Box */
.caution-box {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: 12px;
    padding: 24px 32px;
    max-width: 600px;
    margin: 0 auto;
}

.caution-box ul {
    list-style: none;
}

.caution-box li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    color: #fbbf24;
}

.caution-box li::before {
    content: "⚠️";
    position: absolute;
    left: 0;
}

/* Legal Content */
.legal-content {
    max-width: 700px;
    margin: 0 auto;
}

.legal-content h3 {
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.legal-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.legal-content ul {
    color: var(--text-secondary);
    margin-left: 24px;
    margin-bottom: 16px;
}

.legal-content li {
    margin-bottom: 8px;
}

/* Footer */
.footer {
    background: #020617;
    padding: 40px 24px;
    text-align: center;
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.copyright {
    margin-top: 16px;
}

/* Responsive */
@media (max-width: 600px) {
    .hero h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .section {
        padding: 60px 16px;
    }

    .section h2 {
        font-size: 1.5rem;
    }
}