html[data-language="en"] .lang-ja,
html[data-language="ja"] .lang-en {
    display: none !important;
}

body {
    font-family: sans-serif, Arial;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

p,
li {
    line-height: 1.7em;
}

.link {
    line-height: 1em;
    padding: 0;
    margin: 0;
}

a {
    text-decoration: none;
    color: rgb(85, 85, 171);
}

header {
    text-align: center;
    background-color: white;
    padding: 20px 0;
}

.container {
    padding-bottom: 1em;
}

.banner-container {
    text-align: center;
    background-color: white;
    padding: 12px 0;
}

.banner-container a {
    display: inline-flex;
}

.brand-banner {
    align-items: center;
    gap: 24px;
    max-width: 1200px;
    padding: 8px 24px;
    text-align: left;
}

.brand-icon {
    width: 130px;
    max-width: 28vw;
    height: auto;
    flex-shrink: 0;
}

.brand-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
}

.brand-name {
    color: #5a5a5a;
    font-family: Arial, sans-serif;
    font-size: clamp(2rem, 4vw, 3.6rem);
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.05;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.25);
}

.brand-tagline {
    color: #4a4a4a;
    font-size: clamp(1rem, 1.6vw, 1.25rem);
    letter-spacing: 0.06em;
    line-height: 1.35;
}

.navbar {
    background-color: #505050;
}

.navbar-inner {
    display: flex;
    align-items: stretch;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
}

.navbar-toggle {
    display: none;
    background-color: #333;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
    text-align: center;
    width: 100%;
}

.navbar-menu {
    display: flex;
    justify-content: center;
    flex: 1;
}

.navbar-menu .tab {
    flex: 1;
    padding: 14px 16px;
    cursor: pointer;
    background-color: #505050;
    border: none;
    outline: none;
    color: white;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s;
    font-size: 1.1em;
    font-weight: normal;
    min-height: 60px;
    box-sizing: border-box;
}

.navbar-menu .tab:hover,
.navbar-menu .tab.active {
    background-color: black;
}

.language-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background-color: #404040;
}

.language-label {
    color: white;
    font-size: 0.9em;
    letter-spacing: 0.04em;
}

.lang-button {
    border: 1px solid rgba(255, 255, 255, 0.35);
    background-color: transparent;
    color: white;
    padding: 6px 10px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background-color 0.3s, color 0.3s;
}

.lang-button:hover,
.lang-button.is-active {
    background-color: white;
    color: #333;
}

main {
    padding: 20px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
}

.footer-link {
    color: white;
}

.container::after {
    content: "";
    display: table;
    clear: both;
}

.content {
    padding: 20px;
    width: 60%;
    max-width: 1200px;
    margin: auto;
}

.float-left {
    float: left;
    margin-right: 20px;
    max-width: 200px;
    margin-top: 5px;
}

.page-title {
    font-size: 2em;
    padding: 1em 1em 1em 0;
}

.grid-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
}

.column {
    background-color: #fff;
    padding: 20px;
    border: 0 solid #ccc;
}

.softwareImage {
    max-width: 300px;
    width: 100%;
    margin: auto;
}

.text-block + .text-block {
    margin-top: 0.8em;
}

.list-block {
    padding-left: 1.2em;
    margin: 0.5em 0 0;
}

.client-category {
    margin-top: 1.8em;
}

.client-category h3 {
    border-bottom: 1px solid #ddd;
    margin-bottom: 0.8em;
    padding-bottom: 0.35em;
}

.client-list {
    columns: 2;
    column-gap: 48px;
    list-style-position: outside;
    margin: 0;
    padding-left: 1.25em;
}

.client-list li {
    break-inside: avoid;
    margin-bottom: 0.45em;
}

.contact-content {
    width: 72%;
}

.contact-layout {
    display: grid;
    gap: 24px;
}

.contact-details,
.contact-form-panel {
    border: 1px solid #dedede;
    background-color: #fff;
    padding: 28px;
}

.contact-details {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 28px;
    align-items: start;
}

.contact-image {
    display: block;
    width: 100%;
    max-width: 180px;
    margin: 0;
}

.contact-details h2,
.contact-form-panel h3 {
    margin-top: 0;
}

.contact-intro {
    color: #3f3f3f;
    font-size: 1.05em;
    margin-bottom: 1.4em;
}

.contact-address {
    margin-bottom: 0;
}

.contact-status {
    display: none;
    border: 1px solid;
    margin-bottom: 20px;
    padding: 14px 16px;
}

.contact-status.is-visible {
    display: block;
}

.contact-status p {
    margin: 0;
}

.contact-status-success {
    background-color: #f1f8f1;
    border-color: #8bb88b;
    color: #234f23;
}

.contact-status-local {
    background-color: #f3f7ff;
    border-color: #8fa9d8;
    color: #243f6d;
}

.contact-status-error {
    background-color: #fff4f1;
    border-color: #c78d80;
    color: #633025;
}

.contact-form {
    display: grid;
    gap: 18px;
}

.form-field {
    display: grid;
    gap: 7px;
}

.form-field label {
    color: #333;
    font-weight: 700;
}

.required-marker {
    color: #8b1e1e;
}

.form-field input,
.form-field textarea {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #b8b8b8;
    border-radius: 0;
    color: #222;
    font: inherit;
    padding: 12px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-field textarea {
    min-height: 170px;
    resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
    border-color: #555;
    box-shadow: 0 0 0 3px rgba(85, 85, 171, 0.16);
    outline: none;
}

.contact-submit {
    justify-self: start;
    border: none;
    background-color: #333;
    color: white;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    min-width: 150px;
    padding: 13px 26px;
    transition: background-color 0.2s;
}

.contact-submit:hover,
.contact-submit:focus {
    background-color: black;
}

.form-honey {
    display: none;
}

@media (max-width: 768px) {
    .brand-banner {
        gap: 14px;
        padding: 4px 18px;
    }

    .brand-icon {
        width: 84px;
        max-width: 84px;
    }

    .brand-copy {
        gap: 4px;
    }

    .brand-tagline {
        letter-spacing: 0.03em;
    }

    .navbar-inner {
        flex-direction: column;
    }

    .navbar-menu {
        display: none;
        flex-direction: column;
    }

    .navbar-menu .tab {
        text-align: left;
        padding: 14px 20px;
    }

    .navbar-toggle {
        display: block;
    }

    .language-toggle {
        justify-content: center;
    }

    .content {
        width: 90%;
    }

    .client-list {
        columns: 1;
    }

    .contact-content {
        width: 90%;
    }

    .contact-layout {
        gap: 20px;
    }

    .contact-details,
    .contact-form-panel {
        padding: 20px;
    }

    .contact-details {
        grid-template-columns: 1fr;
    }

    .contact-image {
        max-width: 240px;
    }

    .contact-submit {
        width: 100%;
    }

    .grid-container {
        grid-template-columns: 1fr;
        grid-template-areas:
            "column2"
            "column1";
        place-items: center;
        gap: 0;
    }

    .column1 {
        grid-area: column1;
        padding: 0;
    }

    .column2 {
        grid-area: column2;
        padding-bottom: 1em;
    }
}