@charset "utf-8";
/* Modern Responsive Reset & Base Styles */
:root {
    --text-main: #333;
    --text-red: #9c2328;
    --link-color: #004EA2;
    --font-base: "Osaka", "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

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

body {
    font-family: var(--font-base);
    color: var(--text-main);
    line-height: 1.6;
    background-color: #fff;
    background-image: url('../images/main_bg.gif');
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}

a {
    color: var(--link-color);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

/* Content Sections */
.section {
    min-height: 100vh;
    padding: 60px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.section-content {
    background: rgba(255, 255, 255, 0.95);
    background-image: url('../images/logo_bg.gif');
    background-repeat: no-repeat;
    background-position: right bottom;
    padding: 50px;
    border-radius: 12px;
    max-width: 900px;
    width: 100%;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.logo-area {
    text-align: center;
    margin-bottom: 50px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding-bottom: 30px;
}

.logo-area img {
    height: 70px;
}

.section-title {
    margin-bottom: 40px;
    text-align: center;
}

.section-subtitle {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 30px;
    padding-left: 15px;
    border-left: 5px solid var(--text-red);
}

/* About Information */
.company-info {
    font-size: 15px;
}

.company-info dt {
    font-weight: bold;
    color: var(--text-red);
    margin-top: 20px;
    font-size: 16px;
}

.company-info dd {
    margin-bottom: 10px;
    padding-left: 20px;
}

.company-info ul {
    list-style-type: square;
    padding-left: 20px;
    margin-top: 10px;
}

.company-info li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.sns-area {
    text-align: center;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.sns-area img {
    width: 120px;
    transition: transform 0.2s;
}

.sns-area a:hover img {
    transform: scale(1.05);
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    text-align: center;
    padding: 20px;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .section {
        padding: 40px 15px;
    }

    .section-content {
        padding: 30px 20px 80px 20px;
        background-position: right 10px bottom 10px;
        background-size: 120px auto;
    }
    
    .logo-area img {
        height: 50px;
    }

    .company-info dd {
        padding-left: 10px;
    }
}