/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Hiragino Kaku Gothic Pro", "メイリオ", sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header styles */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

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

h1 {
    font-size: 1.5rem;
    font-weight: normal;
}

.language-switch {
    font-size: 0.9rem;
}

.language-switch a {
    color: #666;
    text-decoration: none;
    padding: 0 0.5rem;
}

.language-switch a.active {
    color: #333;
}

/* Navigation */
nav {
    background-color: #f8f8f8;
    border-top: 1px solid #eee;
}

nav ul {
    max-width: 1200px;
    margin: 0 auto;
    list-style: none;
    display: flex;
    padding: 0.5rem 1rem;
}

nav ul li {
    margin-right: 2rem;
}

nav ul li a {
    color: #333;
    text-decoration: none;
    font-size: 0.9rem;
}

/* Hero section */
.hero {
    margin-top: 120px;
    background-color: #f5f5f5;
    padding: 4rem 1rem;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: normal;
}

/* News section */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.news-list {
    border-top: 1px solid #eee;
}

.news-item {
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
}

.news-item .date {
    color: #666;
    margin-right: 2rem;
    font-size: 0.9rem;
}

/* Footer */
footer {
    background-color: #f8f8f8;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-content {
    text-align: center;
    margin-bottom: 2rem;
}

.copyright {
    text-align: center;
    font-size: 0.8rem;
    color: #666;
}

/* About page styles */
.about-section {
    margin-top: 120px;
    padding: 2rem 0;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.section-ja, .section-en {
    margin-bottom: 4rem;
}

.philosophy {
    margin: 2rem 0;
    line-height: 1.8;
}

.company-details dl {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 1rem;
    margin: 2rem 0;
}

.company-details dt {
    font-weight: bold;
    color: #444;
}

.company-details dd {
    margin: 0;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

/* Update navigation active state */
nav ul li a.active {
    color: #000;
    font-weight: bold;
}