body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f8f9fa;
}

.speaker-hero {
    padding: 110px 20px 60px;
    background: #000000;
    color: #ffffff;
}

.speaker-hero-card {
    display: flex;
    gap: 24px;
    align-items: center;
    flex-wrap: wrap;
}

.speaker-photo-large {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #1AA45A;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.speaker-hero-text {
    max-width: 720px;
}

.speaker-name {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 8px;
}

.speaker-country {
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 6px;
}

.speaker-theme {
    font-size: 18px;
    font-weight: 600;
    color: #1AA45A;
    margin-bottom: 0;
}

.speaker-details-section {
    padding: 60px 20px 80px;
}

.detail-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    margin-bottom: 24px;
}

.detail-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #000000;
}

.detail-text {
    color: #444444;
    margin-bottom: 0;
    line-height: 1.7;
}

.highlight-card {
    border: 1px solid rgba(26, 164, 90, 0.2);
}

.detail-info {
    display: grid;
    gap: 12px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid #f0f0f0;
}

.info-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.info-label {
    color: #666666;
    font-weight: 600;
}

.info-value {
    font-weight: 700;
    color: #000000;
}

.back-link {
    display: inline-block;
    margin-top: 16px;
    color: #1AA45A;
    text-decoration: none;
    font-weight: 600;
}

.back-link:hover {
    color: #158a4f;
}

@media (max-width: 768px) {
    .speaker-hero {
        padding: 100px 20px 50px;
    }

    .speaker-name {
        font-size: 30px;
    }

    .speaker-photo-large {
        width: 110px;
        height: 110px;
    }
}