/* HitoSim Landing Page */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --border: #e2e8f0;
}

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

body {
    font-family: 'Hiragino Kaku Gothic Pro', 'Noto Sans JP', -apple-system, sans-serif;
    color: var(--text);
    line-height: 1.7;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
    color: white;
    text-align: center;
    padding: 6rem 1.5rem 5rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-stats {
    margin-top: 2rem;
    font-size: 1rem;
    opacity: 0.8;
}

.counter {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.9rem 2.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.2s;
}

.btn-primary {
    background: white;
    color: var(--primary);
}

.btn-primary:hover {
    background: #f1f5f9;
    transform: translateY(-1px);
}

.btn-large {
    padding: 1.1rem 3rem;
    font-size: 1.2rem;
}

/* How It Works */
.how-it-works {
    padding: 5rem 1.5rem;
    background: var(--bg);
}

.how-it-works h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--primary-dark);
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.step {
    text-align: center;
    padding: 1.5rem;
}

.step-number {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.step h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

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

/* Scenarios */
.scenarios {
    padding: 5rem 1.5rem;
    background: var(--bg-alt);
}

.scenarios h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--primary-dark);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.scenario-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 2rem;
    transition: box-shadow 0.2s;
}

.scenario-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.scenario-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
}

.scenario-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* CTA Section */
.cta-section {
    padding: 5rem 1.5rem;
    text-align: center;
    background: var(--bg);
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.cta-section p {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.cta-section .btn-primary {
    background: var(--primary);
    color: white;
}

.cta-section .btn-primary:hover {
    background: var(--primary-dark);
}

/* Footer */
footer {
    padding: 2rem 1.5rem;
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .scenario-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .hero { padding: 4rem 1rem 3rem; }
    .hero-title { font-size: 1.6rem; }
    .steps { grid-template-columns: 1fr; }
}

/* Counter animation */
@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.counter.animated {
    animation: countUp 0.5s ease-out;
}