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

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links a {
    margin-left: 2rem;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary-color);
}



.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #e74c3c;
}

.cta-button {
    background: #e74c3c;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s;
}

.cta-button:hover {
    background: #c0392b;
}


/* Hero Section */
.hero {
    background-image: url("images/background.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    /* 左寄せ */
}

.hero-container {
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding-left: 5vw;
    padding-right: 5vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #fff;
    text-align: left;
    box-sizing: border-box;
}

.hero-container h1 {
    font-size: 3rem;
    text-shadow:
        2px 2px 4px rgba(0, 0, 0, 0.3),
        -2px -2px 4px rgba(0, 0, 0, 0.3),
        2px -2px 4px rgba(0, 0, 0, 0.3),
        -2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-container p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-shadow:
        2px 2px 4px rgba(0, 0, 0, 0.3),
        -2px -2px 4px rgba(0, 0, 0, 0.3),
        2px -2px 4px rgba(0, 0, 0, 0.3),
        -2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: flex-start;
}

.hero-buttons a {
    font-size: 1.25rem;
    text-shadow:
        2px 2px 4px rgba(0, 0, 0, 0.5),
        -2px -2px 4px rgba(0, 0, 0, 0.5),
        2px -2px 4px rgba(0, 0, 0, 0.5),
        -2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.9rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.btn-primary {
    background: #e74c3c;
    color: white;
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary:hover {
    background: #c0392b;
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: white;
    padding: 1rem 2rem;
    border: 2px solid white;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

/* Features Section */
.features {
    padding: 4rem 0;
    background: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c1810;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c1810;
}

/* Courses Section */
.courses {
    padding: 4rem 0;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.course-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.course-card:hover {
    transform: translateY(-5px);
}

.course-image {
    height: 200px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.course-content {
    padding: 1.5rem;
}

.course-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2c1810;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #666;
}

/* Stats Section */
.stats {
    background: #2c1810;
    color: white;
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: #e74c3c;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #4FC3F7 0%, #667eea 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: white;
    color: black;
    padding: 3rem 0 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    text-align: center;
    gap: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #e74c3c;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #e74c3c;
}

.footer-bottom {
    text-align: center;
    margin-top: 2rem;
    color: black;
}

.aisl-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .section-title {
        font-size: 2rem;
    }
}

/* Contact Section */
.contact {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--secondary-color);
}

.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}


.section-wrapper {
    background: #f3ecf1;
    padding: 32px 0 32px 0;
    width: 100%;
}


.section-headline {
    text-align: center;
    /* font-weight: bold; */
    font-size: 2.0rem;
    margin-bottom: 40px;
    color: #222;
    letter-spacing: 0.05em;
}

.reasons-row {
    display: flex;
    justify-content: center;
    gap: 48px;
    max-width: 1400px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.reason-block {
    flex: 1 1 320px;
    max-width: 400px;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.reason-icon {
    font-size: 5rem;
    margin-bottom: 18px;
    margin-top: 8px;
    color: #111;
}

.reason-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 8px;
    color: #46273c;
    text-align: center;
}

.reason-list {
    width: 100%;
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.reason-item {
    background: #fff;
    border: 1px solid #bbb;
    border-radius: 12px;
    padding: 14px 18px;
    color: #222;
    font-size: 1rem;
    margin: 0;
    box-sizing: border-box;
    text-align: center;
}

@media (max-width: 1024px) {
    .reasons-row {
        flex-direction: column;
        align-items: center;
        gap: 32px;
    }

    .reason-block {
        max-width: 90vw;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 2rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }

    .pricing-card.featured {
        transform: none;
    }
}