:root {
    --primary-color: #4F46E5;
    --secondary-color: #6366F1;
    --accent-color: #F43F5E;
    --success-color: #10B981;
    --background-color: #F8FAFC;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --gradient-start: #4F46E5;
    --gradient-end: #6366F1;
    --card-background: #FFFFFF;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--background-color);
    margin: 0;
    padding: 0;
    color: var(--text-primary);
    line-height: 1.5;
    padding-top: 4.5rem;
}

.hero-section {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('/img/pattern.svg') center/cover;
    opacity: 0.15;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 1.5rem;
    opacity: 0.95;
    margin-bottom: 2rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.hero-buttons {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    margin-top: 2rem;
}

.start-button {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.75rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
}

.start-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
}

.learn-more-button {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.75rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.learn-more-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.95);
}

.features-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 3rem 2rem;
    background: white;
}

.feature-card {
    text-align: center;
    padding: 1.75rem;
    border-radius: 1rem;
    background: var(--background-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 3.5rem;
    height: 3.5rem;
    margin: 0 auto 1.25rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    font-size: 1.75rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.35rem;
    margin-bottom: 0.875rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.version-selection {
    padding: 2.5rem 2rem;
    background: white;
    margin-top: -1.5rem;
    position: relative;
    z-index: 2;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.version-selection h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.version-selection h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 3px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    border-radius: 3px;
}

.version-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem;
}

.version-card {
    background: var(--background-color);
    border-radius: 1rem;
    padding: 1.75rem;
    position: relative;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    text-align: center;
    cursor: pointer;
}

.version-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.version-card.selected {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    box-shadow: var(--shadow);
}

.version-card.selected::before {
    content: '✓';
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 1.5rem;
    height: 1.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: bold;
}

.version-card.selected .card-icon {
    transform: scale(1.1);
}

.version-card.selected .card-content h3 {
    color: var(--primary-color);
}

.version-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.card-icon {
    width: 4.5rem;
    height: 4.5rem;
    margin: 0 auto 1.25rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.version-card:hover .card-icon {
    transform: scale(1.1);
}

.card-icon i {
    font-size: 2.25rem;
    color: white;
}

.card-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.875rem;
    color: var(--text-primary);
}

.version-desc {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.6;
    font-size: 1rem;
}

.version-users {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.1rem;
}

.personality-types {
    padding: 1rem 2rem;
    background: white;
    margin-top: -2rem;
}

.personality-types h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.personality-types h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 3px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    border-radius: 3px;
}

.personality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 1rem;
}

.personality-card {
    background: var(--background-color);
    border-radius: 1rem;
    padding: 1.75rem;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.personality-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.personality-icon {
    width: 3.5rem;
    height: 3.5rem;
    margin: 0 auto 1.25rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.personality-icon i {
    font-size: 1.75rem;
    color: white;
}

.personality-card h4 {
    font-size: 1.35rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.personality-card p {
    color: var(--text-secondary);
    margin-bottom: 0.875rem;
}

.personality-tag {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 0.4rem 0.875rem;
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.news-section {
    padding: 1rem 2rem;
    background: white;
    margin-top: -2rem;
}

.news-section h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.news-section h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 3px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    border-radius: 3px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.news-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.news-image {
        width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
}

.news-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.3), transparent);
    pointer-events: none;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    background: white;
}

.news-content h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-weight: 600;
    max-width: 100%;
    white-space: normal;
    word-break: break-all;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: auto;
    }

.news-meta i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.footer {
    background: var(--text-primary);
    color: white;
    padding: 1rem;
        text-align: center;
    position: relative;
    z-index: 10;
    }

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer a:hover {
    opacity: 1;
    }

@media (max-width: 768px) {
    body {
        padding-top: 3.5rem;
    }

    .main-nav {
        padding: 0.5rem 0;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .nav-links {
        display: none;
    }

    .nav-logo a {
        font-size: 1.5rem;
    }

    .hero-section {
        padding: 3rem 1rem;
        margin-top: 0;
        min-height: auto;
    }

    .hero-content {
        padding: 0 0.5rem;
    }

    .hero-content h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
        line-height: 1.3;
    }

    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
        padding: 0 0.5rem;
        line-height: 1.5;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        padding: 0 0.5rem;
        margin-top: 1.5rem;
        display: flex;
        align-items: center;
        width: 100%;
    }

    .learn-more-button {
        width: 80%;
        max-width: 280px;
        justify-content: center;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
        border-radius: 0.5rem;
        margin: 0 auto;
    }

    .version-selection {
        padding: 1.5rem 1rem;
        margin-top: -1rem;
        margin-bottom: 0.5rem;
    }

    .version-selection h2 {
        font-size: 1.75rem;
        margin-bottom: 1.25rem;
    }

    .version-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
        padding: 0.5rem;
        max-width: 100%;
        margin: 0 auto;
    }

    .version-card {
        padding: 0.75rem;
        min-width: 0;
        padding-top: 1.25rem;
        padding-left: 1rem;
        padding-right: 1rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        -webkit-box-sizing: border-box;
        box-sizing: border-box;
        position: relative;
    }

    .card-icon {
        width: 2.5rem;
        height: 2.5rem;
        margin-bottom: 0.5rem;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        z-index: 1;
    }

    .card-content {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        -webkit-box-align: center;
        -webkit-box-pack: center;
        margin-top: 0.25rem;
        position: relative;
        z-index: 2;
    }

    .card-content h3 {
        font-size: 0.9rem;
        margin-bottom: 0.35rem;
        text-align: center;
        width: 100%;
        -webkit-box-sizing: border-box;
        box-sizing: border-box;
        padding: 0 0.25rem;
        position: relative;
    }

    .version-desc {
        font-size: 0.8rem;
        margin-bottom: 0.5rem;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-align: center;
        width: 100%;
        -webkit-box-sizing: border-box;
        box-sizing: border-box;
        padding: 0 0.25rem;
        position: relative;
    }

    .version-users {
        font-size: 0.8rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.25rem;
        text-align: center;
        width: 100%;
        -webkit-box-sizing: border-box;
        box-sizing: border-box;
        padding: 0 0.25rem;
        position: relative;
    }

    .version-action {
        margin-top: 0.75rem;
    }

    .start-test-button {
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .features-section {
        padding: 2rem 1rem;
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }

    .feature-card {
        padding: 1.25rem 1rem;
        min-height: 180px;
        display: flex;
        flex-direction: column;
    }

    .feature-icon {
        width: 2.75rem;
        height: 2.75rem;
        margin-bottom: 1rem;
    }

    .feature-icon i {
        font-size: 1.35rem;
    }

    .feature-card h3 {
        font-size: 0.95rem;
        margin-bottom: 0.75rem;
        line-height: 1.4;
    }

    .feature-card p {
        font-size: 0.85rem;
        line-height: 1.5;
        display: -webkit-box;
        -webkit-line-clamp: 4;
        -webkit-box-orient: vertical;
        overflow: hidden;
        flex: 1;
    }

    .personality-types {
        padding: 1rem;
    }

    .personality-types h2 {
        font-size: 1.75rem;
        margin-bottom: 1.25rem;
    }

    .personality-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
        padding-top: 0.75rem;
    }

    .personality-card {
        padding: 0.75rem;
        min-height: 140px;
        display: flex;
        flex-direction: column;
    }

    .personality-icon {
        width: 2.25rem;
        height: 2.25rem;
        margin-bottom: 0.5rem;
    }

    .personality-icon i {
        font-size: 1.1rem;
    }

    .personality-card h4 {
        font-size: 0.85rem;
        margin-bottom: 0.25rem;
        line-height: 1.3;
    }

    .personality-card p {
        font-size: 0.75rem;
        margin-bottom: 0.5rem;
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        flex: 1;
    }

    .personality-tag {
        font-size: 0.7rem;
        padding: 0.2rem 0.5rem;
        margin-top: auto;
    }

    .news-section {
        padding: 1rem 2rem 2rem 2rem;
    }

    .news-section h2 {
        font-size: 1.75rem;
        margin-bottom: 1.25rem;
    }

    .news-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        padding: 0.75rem;
        margin-bottom: 0.25rem;
    }

    .news-card {
        width: 100%;
        display: flex;
        flex-direction: column;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        background: white;
        position: relative;
        border: 1px solid rgba(0, 0, 0, 0.04);
        margin-bottom: 0;
    }

    .news-image {
        height: 140px;
    }

    .news-content {
        padding: 0.75rem;
    }

    .news-content h4 {
        font-size: 0.85rem !important;
        margin-bottom: 0.5rem;
        line-height: 1.4;
        -webkit-line-clamp: 2;
        font-weight: 500;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .news-meta {
        font-size: 0.7rem;
        padding-top: 0.5rem;
    }

    .news-meta i {
        font-size: 0.8rem;
    }

    .footer {
        padding: 0.75rem 1rem;
    }

    .footer-content {
        font-size: 0.9rem;
    }

    .version-badge {
        position: absolute;
        top: 0.5rem;
        right: 0.5rem;
        background: var(--accent-color);
        color: white;
        padding: 0.25rem 0.5rem;
        font-size: 0.7rem;
        font-weight: 500;
        border-radius: 1rem;
        transform: scale(0.9);
        transform-origin: top right;
    }

    .version-card.selected::before {
        content: '✓';
        position: absolute;
        top: 0.5rem;
        left: 0.5rem;
        width: 1.25rem;
        height: 1.25rem;
        background: var(--primary-color);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.8rem;
        font-weight: bold;
        z-index: 1;
    }

    .version-card .card-icon {
        margin-top: 0.3rem !important;
        margin-bottom: 0.7rem !important;
    }

    .version-cards .version-card.selected,
    .version-cards .version-card.selected:active,
    .version-cards .version-card.selected:focus {
        background: transparent !important;
        box-shadow: none !important;
    }
}

@media (max-width: 480px) {
    body {
        padding-top: 3rem;
    }

    .main-nav {
        padding: 0.4rem 0;
    }

    .nav-logo a {
        font-size: 1.35rem;
    }

    .hero-section {
        padding: 2.5rem 0.75rem;
    }

    .hero-content h1 {
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 1.25rem;
        padding: 0 0.25rem;
    }

    .hero-buttons {
        gap: 0.75rem;
        margin-top: 1.25rem;
        padding: 0 0.25rem;
    }

    .learn-more-button {
        width: 85%;
        max-width: 240px;
        padding: 0.8rem 1.25rem;
        font-size: 0.95rem;
    }

    .personality-grid {
        gap: 0.5rem;
        padding-top: 0.5rem;
    }

    .personality-card {
        padding: 0.6rem;
        min-height: 130px;
    }

    .personality-icon {
        width: 2rem;
        height: 2rem;
        margin-bottom: 0.4rem;
    }

    .personality-icon i {
        font-size: 1rem;
    }

    .personality-card h4 {
        font-size: 0.8rem;
        margin-bottom: 0.2rem;
    }

    .personality-card p {
        font-size: 0.7rem;
        margin-bottom: 0.4rem;
        -webkit-line-clamp: 2;
    }

    .personality-tag {
        font-size: 0.65rem;
        padding: 0.15rem 0.4rem;
    }

    .version-selection h2,
    .personality-types h2,
    .news-section h2 {
        font-size: 1.5rem;
    }

    .version-cards {
        gap: 0.5rem;
        padding: 0.25rem;
    }

    .version-card {
        padding: 0.6rem;
        padding-top: 1rem;
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .card-icon {
        width: 2.25rem;
        height: 2.25rem;
        margin-bottom: 0.35rem;
    }

    .card-icon i {
        font-size: 1.1rem;
    }

    .card-content h3 {
        font-size: 0.85rem;
        margin-bottom: 0.25rem;
        padding: 0 0.15rem;
    }

    .version-desc {
        font-size: 0.75rem;
        margin-bottom: 0.35rem;
        padding: 0 0.15rem;
    }

    .version-users {
        font-size: 0.75rem;
        padding: 0 0.15rem;
    }

    .version-users i {
        font-size: 0.75rem;
    }

    .start-test-button {
        width: 85%;
        max-width: 180px;
        padding: 0.7rem 1.25rem;
        font-size: 0.9rem;
    }

    .version-badge {
        top: 0.4rem;
        right: 0.4rem;
        background: var(--accent-color);
        color: white;
        padding: 0.2rem 0.4rem;
        font-size: 0.65rem;
        font-weight: 500;
        transform: scale(0.85);
    }

    .version-card.selected::before {
        top: 0.4rem;
        left: 0.4rem;
        width: 1.1rem;
        height: 1.1rem;
        font-size: 0.7rem;
    }

    .features-section {
        padding: 1.5rem 0.75rem;
        gap: 0.5rem;
    }

    .feature-card {
        padding: 1rem 0.75rem;
        min-height: 160px;
    }

    .feature-icon {
        width: 2.5rem;
        height: 2.5rem;
        margin-bottom: 0.75rem;
    }

    .feature-icon i {
        font-size: 1.25rem;
    }

    .feature-card h3 {
        font-size: 0.9rem;
        margin-bottom: 0.6rem;
    }

    .feature-card p {
        font-size: 0.8rem;
        -webkit-line-clamp: 3;
    }

    .news-section {
        padding: 1rem 1rem 1.75rem 1rem;
    }

    .news-grid {
        gap: 0.75rem;
        padding: 0.5rem;
        margin-bottom: 0.2rem;
    }

    .news-card {
        border-radius: 12px;
    }

    .news-image {
        height: 120px;
    }

    .news-content {
        padding: 0.6rem;
    }

    .news-content h4 {
        font-size: 0.8rem !important;
        margin-bottom: 0.4rem;
        line-height: 1.3;
        -webkit-line-clamp: 2;
        font-weight: 500;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .news-meta {
        font-size: 0.65rem;
        padding-top: 0.4rem;
    }

    .news-meta i {
        font-size: 0.8rem;
    }

    .footer {
        padding: 0.6rem 0.75rem;
    }

    .footer-content {
        font-size: 0.9rem;
    }

    .version-badge {
        position: absolute;
        top: 0.5rem;
        right: 0.5rem;
        background: var(--accent-color);
        color: white;
        padding: 0.25rem 0.5rem;
        font-size: 0.7rem;
        font-weight: 500;
        border-radius: 1rem;
        transform: scale(0.9);
        transform-origin: top right;
    }

    .version-card.selected::before {
        content: '✓';
        position: absolute;
        top: 0.5rem;
        left: 0.3rem;
        width: 1.25rem;
        height: 1.25rem;
        background: var(--primary-color);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.8rem;
        font-weight: bold;
        z-index: 1;
    }
}

@media (min-width: 769px) {
    body .mobile-bottom-buttons {
        display: none !important;
        visibility: hidden !important;
        height: 0 !important;
        min-height: 0 !important;
        max-height: 0 !important;
        overflow: hidden !important;
    }
}

@media (max-width: 375px) {
    .logo-container {
        width: 70px;
        height: 70px;
    }

    .header h1 {
        font-size: 1.6rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    .description {
        font-size: 0.85rem;
    }

    .version-card {
        padding: 0.4rem;
    }

    .card-icon {
        font-size: 5rem;
        position:relative;
        top: 22px;
    }

    .card-content h2 {
        font-size: 0.9rem;
    }

    .version-type {
        font-size: 0.7rem;
    }

    .popularity {
        font-size: 0.6rem;
    }

    .instructions, .history {
        padding: 0.8rem;
    }

    .instructions h3, .history h3 {
        font-size: 1.1rem;
    }

    .instructions li, .history li {
        padding: 0.6rem;
        font-size: 0.8rem;
    }

    .instructions li b, .history li b {
        font-size: 0.9rem;
    }
}

.recover-report-button {
    position: fixed;
    right: 20px;
    bottom: 20px;
    background-color: #f27474;
    color: white;
    padding: 10px 15px;
    border-radius: 50px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s ease;
}

.recover-report-button i {
    font-size: 18px;
    margin-right: 8px;
}

.recover-report-button span {
    font-size: 14px;
    font-weight: 500;
}

.recover-report-button:hover {
    background-color: #3a59c7;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .recover-report-button {
        right: 15px;
        bottom: 15px;
        padding: 8px 12px;
    }

    .recover-report-button i {
        font-size: 16px;
    }

    .recover-report-button span {
        font-size: 12px;
    }
}

.version-notice {
    background: rgba(242, 116, 116, 0.1);
    border-left: 4px solid #f27474;
    padding: 12px 16px;
    margin: 15px auto;
    max-width: 500px;
    border-radius: 4px;
    font-size: 14px;
    color: #f27474;
    line-height: 1.5;
    text-align: center;
    box-shadow: 0 2px 8px rgba(24, 144, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.version-notice i {
    font-size: 16px;
}

@media (max-width: 768px) {
    .version-notice {
        margin: 12px 15px;
        font-size: 13px;
        padding: 10px 12px;
    }
}

.recommend-tag {
    position: absolute;
    top: -0.1px;
    right: 0px;
    padding: 3px 7px;
    font-size: 0.99rem;
    color: white;
    font-weight: 500;
    writing-mode: horizontal-tb;
    z-index: 1;
    border-radius: 0 14px 0 0;
    background: var(--accent-color);
}

/*.version-card:nth-child(1) .recommend-tag {*/
/*    background: #f27474;*/
/*}*/

/*.version-card:nth-child(2) .recommend-tag {*/
/*    background: #f27474;*/
/*}*/

.version-card:nth-child(1) .recommend-tag {
    background: #f27474;
}

@media (max-width: 768px) {
    .recommend-tag {
        font-size: 0.75rem;
        padding: 2px 4px;
        right: -2px;
    }
}

.mbti-types {
    background-color: var(--card-background);
    padding: 2rem;
    margin: 2rem auto;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    text-align: center;
    max-width: 1200px;
}

.mbti-types h3 {
    color: var(--primary-color);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.mbti-types h3::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 3px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    border-radius: 3px;
}

.mbti-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.mbti-card {
    background: var(--card-background);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.mbti-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mbti-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.mbti-card:hover::before {
    opacity: 1;
}

.mbti-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    }

.mbti-icon i {
    font-size: 2rem;
    color: white;
    transition: all 0.3s ease;
    }

.mbti-card:hover .mbti-icon {
    transform: rotate(10deg) scale(1.1);
}

.mbti-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0.5rem 0;
    color: var(--text-primary);
}

.mbti-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

.floating-buttons {
    position: fixed;
    right: 1.5rem;
    bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    z-index: 1000;
}

.floating-button {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: 2rem;
    box-shadow: 
        0 4px 6px rgba(99, 102, 241, 0.2),
        0 0 0 1px rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-weight: 500;
}

.floating-button i {
    font-size: 1.25rem;
}

.floating-button span {
    font-size: 0.875rem;
    white-space: nowrap;
}

.floating-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.wechat-button {
    background: linear-gradient(135deg, var(--success-color), #34D399);
    box-shadow: 
        0 4px 6px rgba(16, 185, 129, 0.2),
        0 0 0 1px rgba(16, 185, 129, 0.1);
}

.wechat-button:hover {
    background: linear-gradient(135deg, #06ae56, #059a4d);
}

.mobile-bottom-buttons {
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    display: flex !important;
    gap: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    background: transparent !important;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.06) !important;
    z-index: 1000 !important;
    width: 100vw !important;
    max-width: 100vw !important;
    height: 56px !important; /* 适合手指点击 */
}

.mobile-button {
    flex: 1 !important;
    border: none !important;
    border-radius: 0 !important;
    min-width: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    height: 56px !important;
    font-size: 1.1rem !important;
    font-weight: 600 !important;
    color: #fff !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.5em !important;
    box-shadow: none !important;
    transition: background 0.2s;
    outline: none !important;
    user-select: none;
}

.mobile-report-btn {
    background: #4F46E5 !important;
}

.mobile-wechat-btn {
    background: #10B981 !important;
}

/* 按钮分割线 */
.mobile-report-btn {
    border-right: 1px solid #fff3 !important;
}
.mobile-wechat-btn {
    border-left: 1px solid #fff3 !important;
}

/* 点击反馈 */
.mobile-button:active {
    filter: brightness(0.92);
}

@media (min-width: 769px) {
    .mobile-bottom-buttons {
        display: none;
    }
}

@media (max-width: 768px) {
    .floating-buttons {
        display: none;
    }
}

.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    padding: 0.875rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo a {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
}

.nav-logo a:hover {
    transform: translateY(-1px);
    color: var(--secondary-color);
}

.nav-links {
    display: flex;
    gap: 3.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
    }
    
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    transition: width 0.3s ease;
    border-radius: 2px;
}

.nav-link:hover {
    color: var(--primary-color);
    transform: translateY(-1px);
}

.nav-link:hover::after {
    width: 100%;
    }

.nav-buttons {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.nav-button {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border: none;
    padding: 0.75rem 1.75rem;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(99, 102, 241, 0.2);
}

.nav-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(99, 102, 241, 0.3);
    background: linear-gradient(135deg, var(--gradient-end), var(--gradient-start));
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .nav-links {
        display: none;
}

    .nav-logo a {
        font-size: 1.5rem;
}

    .nav-button {
        padding: 0.625rem 1.25rem;
        font-size: 1rem;
    }
}

.version-action {
    text-align: center;
    margin-top: 2rem;
}

.start-test-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.25rem;
    font-weight: 600;
    border-radius: 0.75rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(99, 102, 241, 0.2);
}

.start-test-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(99, 102, 241, 0.3);
    background: var(--secondary-color);
}

.start-test-button:disabled {
    background: #CBD5E1;
    cursor: not-allowed;
    box-shadow: none;
}

.start-test-button i {
    font-size: 0.7rem;
}

@media (max-width: 768px) {
    .version-action {
        margin-top: -0.5rem;
    }

    .start-test-button {
        padding: 8px 47px;
        font-size: 0.9rem;
    }
    }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: all 0.3s ease;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    align-items: center;
    justify-content: center;
}

.mobile-menu-btn:hover {
    background: rgba(79, 70, 229, 0.1);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1001;
    display: none;
    opacity: 0;
    transition: all 0.3s ease;
}

.mobile-menu.active {
    display: block;
    opacity: 1;
}

.mobile-menu-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(79, 70, 229, 0.1);
    border: none;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--primary-color);
    font-size: 1.25rem;
    z-index: 2;
}

.mobile-menu-close:hover {
    background: rgba(79, 70, 229, 0.2);
    transform: rotate(90deg);
}

.mobile-menu-close i {
    transition: transform 0.3s ease;
}

.mobile-menu-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 85%;
    max-width: 320px;
    height: 100%;
    background: white;
    padding: 1.5rem 1rem;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: -4px 0 15px rgba(0, 0, 0, 0.1);
}

.mobile-menu.active .mobile-menu-content {
    transform: translateX(0);
}

.mobile-nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    padding: 1rem 1.25rem;
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
    background: rgba(79, 70, 229, 0.03);
}

.mobile-nav-link i {
    font-size: 1.25rem;
    color: var(--primary-color);
    opacity: 1;
    width: 1.5rem;
    text-align: center;
    background: rgba(79, 70, 229, 0.1);
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.mobile-nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-nav-link:hover {
    background: rgba(79, 70, 229, 0.08);
    color: var(--primary-color);
    transform: translateX(4px);
}

.mobile-nav-link:hover::before {
    opacity: 1;
}

.mobile-nav-link:hover i {
    opacity: 1;
    transform: scale(1.1);
    background: rgba(79, 70, 229, 0.15);
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        display: none;
    }

    body.menu-open {
        overflow: hidden;
    }

    .mobile-menu-content {
        padding-top: 4rem;
    }

    .mobile-nav-link {
        margin: 0.25rem 0;
    }

    .mobile-nav-link i {
        font-size: 1.2rem;
        width: 1.5rem;
        display: inline-block;
        padding: 0.4rem;
    }

    .mobile-menu-close {
        top: 1.25rem;
        right: 1.25rem;
    }
}

@media (max-width: 480px) {
    .mobile-menu-content {
        width: 90%;
    }

    .mobile-nav-link {
        font-size: 1rem;
        padding: 0.875rem 1rem;
    }

    .mobile-nav-link i {
        font-size: 1.1rem;
        width: 1.4rem;
        padding: 0.35rem;
    }

    .mobile-menu-close {
        width: 2.25rem;
        height: 2.25rem;
        font-size: 1.1rem;
        top: 1rem;
        right: 1rem;
    }
}

@media (max-width: 768px) {
    .mobile-bottom-buttons,
    .mobile-bottom-buttons .mobile-button {
        height: 45px !important;
        min-height: 45px !important;
        max-height: 45px !important;
        line-height: 45px !important;
    }
    .mobile-button {
        padding-top: 0 !important;
        padding-bottom: 0 !important;
    }
}

@media (max-width: 768px) {
    .version-cards .version-card.selected,
    .version-cards .version-card.selected:active,
    .version-cards .version-card.selected:focus {
        background: transparent !important;
        box-shadow: none !important;
    }
}

.footer-link {
    padding: 20px;
}
.footer-link ul {
   margin-left: -20px;
   width: 100%;
   min-height: 15px;
}
.footer-link ul li {
    list-style: none;
    width: 100px;
    float:left;
}
.footer-link ul li a {
    color:black;
    text-decoration: none;
}