.container {
    max-width: 900px;
    margin: 0 auto;
    padding-left: 32px;
    padding-right: 32px;
    box-sizing: border-box;
}

main {
    width: 100%;
}

section {
    margin-bottom: 40px;
}

.logo {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    background: #f8f8f8;
}

.navbar ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0;
    margin: 0;
    background: #333;
}

.navbar li {
    margin: 0 15px;
}

.navbar a {
    color: #fff;
    text-decoration: none;
    padding: 14px 20px;
    display: block;
    font-size: 16px;
    transition: background 0.3s;
}

.navbar a:hover {
    background: #555;
    border-radius: 4px;
}

.panel {
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 16px;
    background: #fafafa;
}

.panel-heading {
    padding: 12px 20px;
    cursor: pointer;
    background: #f0f0f0;
    border-bottom: 1px solid #ddd;
}

.panel-heading:hover {
    background: #e0e0e0;
}

.panel-title {
    margin: 0;
    font-size: 18px;
}

.panel-collapse {
    padding: 16px 20px;
}

.experience-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-top: 24px;
}

.experience-item {
    display: flex;
    align-items: flex-start;
    background: #f9f9f9;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.experience-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: #333;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-right: 20px;
    margin-top: 4px;
}

.experience-content {
    flex: 1;
}

.experience-title {
    margin: 0 0 8px 0;
    font-size: 20px;
    font-weight: 600;
}

.experience-meta {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.experience-details {
    margin: 0;
    padding-left: 18px;
    font-size: 15px;
    color: #444;
}

.certification-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
    margin-top: 24px;
}

.certification-card {
    display: flex;
    align-items: flex-start;
    background: #f7f7fc;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 24px;
    gap: 18px;
}

.certification-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: #333;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-top: 4px;
}

.certification-content {
    flex: 1;
}

.certification-title {
    margin: 0 0 10px 0;
    font-size: 18px;
    font-weight: 600;
    color: #222;
}

.certification-details {
    margin: 0;
    padding-left: 18px;
    font-size: 15px;
    color: #444;
    line-height: 1.6;
}

.about-card {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f7f7fc;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    padding: 32px;
    max-width: 700px;
    margin: 0 auto;
}

.about-content {
    flex: 1;
    text-align: left;
}

.about-content h2 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 26px;
    color: #333;
}

.about-content p {
    font-size: 17px;
    color: #444;
    line-height: 1.7;
    margin: 0;
}



.research-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
    margin-top: 24px;
}

.research-card {
    display: flex;
    align-items: flex-start;
    background: #f7f7fc;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 24px;
    gap: 18px;
}

.research-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: #333;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-top: 4px;
}

.research-content {
    flex: 1;
}

.research-title {
    margin: 0 0 8px 0;
    font-size: 18px;
    font-weight: 600;
    color: #222;
}

.research-meta {
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.research-content p {
    font-size: 15px;
    color: #444;
    margin: 0;
}

.research-content a {
    color: #0077cc;
    text-decoration: underline;
}

.research-content a:hover {
    color: #005fa3;
    text-decoration: none;
}

.home-card {
    background: #f7f7fc;
    border-radius: 14px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    padding: 36px 32px;
    max-width: 700px;
    margin: 0 auto 40px auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.home-header {
    display: flex;
    align-items: center;
    gap: 32px;
    margin-bottom: 24px;
}

.home-profile-img {
    width: 180px;
    height: 220px;
    margin-left: -10px;
    object-fit: cover;
    border-radius: 2px; 
    border: 3px solid #333;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    background: #fff;
}

.home-title {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.home-contact {
    width: 100%;
    margin-top: 16px;
}

.home-contact h3 {
    margin-bottom: 12px;
    font-size: 20px;
    color: #222;
    font-weight: 600;
}

.home-contact ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.home-contact li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    background: #fff;
    border-radius: 6px;
    padding: 8px 14px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    transition: box-shadow 0.2s;
}

.home-contact li:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}

.home-contact a {
    color: #0077cc;
    text-decoration: none;
    font-weight: 500;
}

.home-contact a:hover {
    color: #005fa3;
    text-decoration: underline;
}

.home-contact i {
    font-size: 18px;
    color: #333;
}