:root {
    --primary-color: #0a3b49;
    --secondary-color: #e9b949;
    --text-color: #333333;
    --light-text: #666666;
    --background-color: #ffffff;
    --light-bg: #f5f7fa;
    --accent-color: #e9b949;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
}

body.ja {
    font-family: 'Noto Sans JP', 'Inter', sans-serif;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 40px;
}

.logo-text {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 32px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

.contact-btn {
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: white !important;
    border-radius: var(--border-radius);
    transition: background-color 0.3s ease;
}

.contact-btn:hover {
    background-color: #0c4d5f;
}

.lang-switch {
    padding: 8px 12px;
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.lang-switch:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    padding: 80px 0;
    min-height: 80vh;
    position: relative;
    overflow: hidden;
}

.hero-content {
    width: 55%;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.hero h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--secondary-color);
}

.subtitle {
    font-size: 1.25rem;
    color: var(--light-text);
    margin-bottom: 40px;
    max-width: 90%;
}

.cta-container {
    margin-top: 40px;
}

.notify-form {
    display: flex;
    max-width: 500px;
}

.notify-form input {
    flex: 1;
    padding: 16px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-size: 1rem;
    outline: none;
}

.notify-form button {
    padding: 16px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.notify-form button:hover {
    background-color: #0c4d5f;
}

.form-note {
    margin-top: 8px;
    font-size: 0.875rem;
    color: var(--light-text);
}

.hero-image {
    position: absolute;
    right: -100px;
    width: 50%;
    height: 100%;
    z-index: 1;
}

.network-graphic {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle, rgba(233, 185, 73, 0.1) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.6;
}

.network-graphic::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    background-color: rgba(10, 59, 73, 0.05);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--light-bg);
}

.section-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.about h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.about h3 {
    font-size: 1.5rem;
    color: var(--light-text);
    font-weight: 500;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(10, 59, 73, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 24px;
    color: var(--primary-color);
}

.feature-card h4 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.feature-card p {
    color: var(--light-text);
}

/* Features Section */
.features {
    padding: 100px 0;
}

.features h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 60px;
}

.benefits-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.benefit {
    text-align: left;
    padding: 20px;
}

.benefit h4 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 16px;
    position: relative;
    padding-left: 24px;
}

.benefit h4::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background-color: var(--secondary-color);
    border-radius: 50%;
}

.benefit p {
    color: var(--light-text);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-info {
    display: flex;
    justify-content: space-between;
    width: 50%;
}

.founder-info, .company-info {
    margin-right: 40px;
}

.founder-info p, .company-info p {
    margin-bottom: 8px;
}

.founder-info a {
    color: var(--secondary-color);
    text-decoration: none;
}

.newsletter {
    width: 40%;
}

.newsletter h4 {
    margin-bottom: 16px;
    font-size: 1.25rem;
}

.footer-notify-form {
    display: flex;
}

.footer-notify-form input {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-size: 0.875rem;
}

.footer-notify-form button {
    padding: 12px 16px;
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
}

/* Notification */
.notification {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--primary-color);
    color: white;
    padding: 16px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: none;
    align-items: center;
    z-index: 1000;
}

.notification.show {
    display: flex;
}

.notification p {
    margin-right: 16px;
}

#close-notification {
    background: none;
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 60px 0;
    }

    .hero-content {
        width: 100%;
        margin-bottom: 60px;
    }

    .subtitle {
        max-width: 100%;
    }

    .notify-form {
        margin: 0 auto;
    }

    .hero-image {
        position: relative;
        right: auto;
        width: 100%;
        height: 300px;
    }

    .footer-info, .newsletter {
        width: 100%;
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
    }

    nav ul {
        margin-top: 20px;
    }

    nav ul li {
        margin: 0 16px;
    }

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

    .hero h2 {
        font-size: 2rem;
    }

    .about h2, .features h2 {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}