/* 歩留計算機ページのヘッダーをTOPページと統一 */
body {
    padding-top: 70px;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    height: 70px;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 0;
    box-shadow: 0 1px 0 rgba(38, 50, 56, 0.08), 0 10px 30px rgba(38, 50, 56, 0.06);
    backdrop-filter: blur(10px);
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
}

header .container {
    width: 100%;
    max-width: 1200px;
    height: 100%;
    min-height: 0;
    margin: 0 auto;
    padding: 0 20px;
    gap: 0;
}

header .logo {
    color: #263238;
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 1px;
}

header nav ul {
    gap: 0;
    font-size: initial;
    font-weight: initial;
}

header nav ul li {
    margin-left: 30px;
}

header nav ul li a {
    color: #5D6466;
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    font-size: 15px;
    font-weight: 500;
}

header nav ul li a:hover,
header nav ul li a.active {
    color: #F06A3C;
}

@media (max-width: 768px) {
    header .logo {
        font-size: 16px;
    }

    header nav ul li {
        margin-left: 0;
    }
}