.kf-page {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #F8F6F3;
    min-height: 100vh;
    color: #1A1A1A;
    padding-top: 72px;
}

.kf-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

.kf-hero {
    background: linear-gradient(135deg, #2A2A2A 0%, #1A1A1A 50%, #2A2A2A 100%);
    padding: 56px 0 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.kf-hero::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(197,165,90,0.05);
    pointer-events: none;
}

.kf-hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -60px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: rgba(197,165,90,0.04);
    pointer-events: none;
}

.kf-hero-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: rgba(197,165,90,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.kf-hero-icon svg {
    width: 32px;
    height: 32px;
    color: #C5A55A;
}

.kf-hero h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 4px;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.kf-hero h1 span {
    color: #C5A55A;
}

.kf-hero p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    letter-spacing: 2px;
    position: relative;
    z-index: 1;
}

.kf-section {
    padding: 40px 0;
}

.kf-card {
    background: #FFFFFF;
    border: 1px solid #E8E4DF;
    border-radius: 12px;
    padding: 36px 32px;
    margin-bottom: 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.kf-card-header {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid #E8E4DF;
}

.kf-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #C7202C, #A01A24);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #FFFFFF;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.kf-info h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1A1A1A;
    margin-bottom: 4px;
}

.kf-info .kf-role {
    font-size: 0.85rem;
    color: #C7202C;
    font-weight: 500;
    letter-spacing: 1px;
}

.kf-info .kf-desc {
    font-size: 0.85rem;
    color: #888;
    margin-top: 6px;
    line-height: 1.6;
}

.kf-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #1A1A1A;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.kf-card h3::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 16px;
    background: #C7202C;
    margin-right: 10px;
    vertical-align: middle;
    border-radius: 2px;
}

.kf-card p {
    font-size: 0.9rem;
    color: #555;
    line-height: 1.9;
    margin-bottom: 12px;
}

.kf-tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.kf-tech-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: #F8F6F3;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.kf-tech-item:hover {
    background: #C7202C;
    color: #FFFFFF;
}

.kf-tech-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: #C7202C;
    transition: color 0.3s ease;
}

.kf-tech-item:hover svg {
    color: #FFFFFF;
}

.kf-tech-item span {
    font-size: 0.85rem;
    font-weight: 500;
}

.kf-contrib-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.kf-contrib-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    background: #F8F6F3;
    border-radius: 8px;
    font-size: 0.88rem;
    color: #555;
    line-height: 1.6;
}

.kf-contrib-item .kf-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #C5A55A;
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
    margin-top: 2px;
}

.kf-contrib-item strong {
    color: #1A1A1A;
}

.kf-contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}

.kf-contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: #F8F6F3;
    border-radius: 8px;
    font-size: 0.88rem;
    color: #555;
    text-decoration: none;
    transition: all 0.3s ease;
}

.kf-contact-item:hover {
    background: #C5A55A;
    color: #FFFFFF;
}

.kf-contact-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: #C7202C;
    transition: color 0.3s ease;
}

.kf-contact-item:hover svg {
    color: #FFFFFF;
}

.kf-copyright {
    text-align: center;
    padding: 40px 0;
    color: #888;
    font-size: 0.82rem;
    line-height: 1.8;
}

.kf-copyright strong {
    color: #555;
}

@media (max-width: 768px) {
    .kf-page {
        padding-top: 60px;
    }

    .kf-hero {
        padding: 40px 0 36px;
    }

    .kf-hero h1 {
        font-size: 1.4rem;
    }

    .kf-card {
        padding: 24px 20px;
    }

    .kf-card-header {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }

    .kf-avatar {
        width: 64px;
        height: 64px;
        font-size: 1.5rem;
    }

    .kf-tech-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

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

@media (max-width: 480px) {
    .kf-container {
        padding: 0 14px;
    }

    .kf-hero h1 {
        font-size: 1.2rem;
    }

    .kf-tech-grid {
        grid-template-columns: 1fr 1fr;
    }

    .kf-card {
        padding: 18px 14px;
    }
}