body {
    background: #fff;
    font-family: 'Fira Sans', Arial, sans-serif;
    color: #333;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 32px;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
}

.site-title {
    font-family: 'Fira Sans', Arial, sans-serif;
    font-weight: 700;
    color: #000;
    font-size: 2.2rem;
    text-decoration: none;
}

nav {
    margin-top: 18px;
}

.menu {
    display: flex;
    gap: 32px;
    justify-content: center;
}

.menu-item {
    font-family: 'Fira Sans', Arial, sans-serif;
    font-size: 1.1rem;
    color: #222;
    text-decoration: none;
    transition: color 0.2s;
}

.menu-item:hover {
    color: #000;
}

main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-content {
    font-size: 1.3rem;
    color: #444;
    text-align: center;
    max-width: 700px;
    margin: 48px auto 48px auto;
    padding: 0 18px;
    line-height: 1.5;
}

footer {
    text-align: center;
    padding: 18px 0 12px 0;
    background: #fafafa;
}

.footer-link {
    color: #bbb;
    font-size: 1rem;
    text-decoration: none;
    font-family: 'Fira Sans', Arial, sans-serif;
}

.footer-link:hover {
    color: #888;
}

.attributes-list {
    display: table;
    width: 100%;
    background: #f7f7f7;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    padding: 32px 32px 24px 32px;
    margin: 0 auto;
    text-align: left;
    min-width: 260px;
    max-width: 480px;
}

.attributes-list tr {
    border-bottom: 1px solid #eee;
    line-height: 2.2;
}

.attributes-list td {
    vertical-align: middle;
    padding: 12px 0;
    font-size: 1.1rem;
}

.attributes-list td:first-child {
    font-weight: 700;
    color: #222;
    width: 160px;
}

.attributes-list td:last-child {
    color: #444;
    word-break: break-word;
    padding-left: 16px;
}

.attributes-list a {
    color: #444;
    text-decoration: underline;
}

.attributes-list a:hover {
    color: #000;
}

.project-list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    max-width: 700px;
    text-align: left;
}

.project-item {
    background: #f7f7f7;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    padding: 28px 28px 20px 28px;
    margin-bottom: 32px;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #222;
    text-decoration: underline;
}

.project-title:hover {
    color: #000;
}

.project-desc {
    margin-top: 12px;
    color: #444;
    font-size: 1.1rem;
    line-height: 1.7;
}


/* Language tabs */
.lang-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    gap: 16px;
}

.lang-tab {
    border: none;
    background: none;
    font-family: 'Fira Sans', Arial, sans-serif;
    font-size: 1rem;
    padding: 8px 16px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    color: #444;
}

.lang-tab.active {
    border-color: #333;
    font-weight: 700;
    color: #111;
}

.lang-section {
    display: none;
}

.lang-section.active {
    display: block;
}

.epigraph {
    margin: 12px 0 48px auto;
    width: 50%;
    font-style: italic;
    color: #222;
    text-align: right;
}

.lang-section > p:first-of-type {
    margin-top: 0;
    margin-bottom: 52px;
    font-size: 1.1rem;
}

.epigraph blockquote {
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.6;
}

.epigraph figcaption {
    margin-top: 8px;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #555;
}

/* Principles layout */
.principles-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-top: 64px;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.principles-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.principle-item {
    margin-top: 20px;
}

.principle-item-title {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 6px;
}

.principle-item-desc {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #444;
}

/* Q&A layout */
.qa-section {
    margin-top: 80px;
    text-align: left;
    font-size: 1.1rem;
    line-height: 1.7;
}

.qa-title {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 28px;
    text-align: center;
}

.qa-item {
    margin-bottom: 32px;
}

.qa-question {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.qa-answer-label {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.qa-item p {
    margin-top: 0;
    margin-bottom: 14px;
}

.qa-item ul,
.qa-item ol {
    margin: 12px 0 20px 24px;
    padding: 0;
    text-align: left;
}

.qa-item blockquote {
    margin: 12px 0 20px 16px;
    padding-left: 16px;
    border-left: 3px solid #ddd;
    color: #555;
    font-style: italic;
}