* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
    font-size: 15px;
    position: relative;
    overflow-x: hidden;
}

/* Background Elements */
.bg-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
    transition: transform 0.1s ease-out;
}

.geo-grid {
    width: 100%;
    height: 100%;
    opacity: 0.4;
    transition: transform 0.1s ease-out;
}

.grid-lines {
    filter: drop-shadow(0 0 2px rgba(0, 102, 204, 0.15));
}

.knowledge-nodes {
    animation: float 8s ease-in-out infinite;
}

.connections {
    stroke-linecap: round;
    filter: drop-shadow(0 0 1px rgba(0, 102, 204, 0.2));
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(5px); }
}

.wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 1;
}

.header {
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 1px solid #ddd;
}

.welcome-section {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.welcome {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1a1a1a;
}

.intro {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
    text-align: justify;
    text-align-last: left;
}

.highlight {
    color: #ff0000;
    font-weight: 600;
}

.header-top {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.profile-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 3px solid #0066cc;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.header-text {
    flex: 1;
}

.header h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1a1a1a;
}

.tagline {
    color: #666;
    font-size: 14px;
    margin-bottom: 8px;
    font-weight: 500;
}

.meta {
    color: #999;
    font-size: 13px;
}

.meta a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.2s;
}

.meta a:hover {
    color: #0052a3;
    text-decoration: underline;
}

.meta a {
    color: #0066cc;
    text-decoration: none;
}

.meta a:hover {
    text-decoration: underline;
}

.content {
    line-height: 1.8;
    letter-spacing: 0.3px;
}

.section {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

.section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.section h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #1a1a1a;
    padding-bottom: 8px;
    border-bottom: 2px solid #f0f0f0;
}

.section h3 {
    font-size: 15px;
    font-weight: 600;
    margin-top: 16px;
    margin-bottom: 12px;
    color: #1a1a1a;
}

.section p {
    margin-bottom: 12px;
    color: #555;
    text-align: justify;
    text-align-last: left;
}

.section ul {
    list-style: none;
}

.section li {
    margin-bottom: 10px;
    padding-left: 16px;
    position: relative;
    text-align: justify;
    text-align-last: left;
    line-height: 1.7;
}

.section li:before {
    content: "▪";
    position: absolute;
    left: 0;
    color: #0066cc;
    font-size: 12px;
}

.section a {
    color: #0066cc;
    text-decoration: none;
}

.section a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    .wrapper {
        padding: 20px 15px;
    }

    .header {
        margin-bottom: 30px;
        padding-bottom: 20px;
    }

    .welcome-section {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }

    .welcome {
        font-size: 20px;
    }

    .intro {
        font-size: 13px;
    }

    .header-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .profile-photo {
        width: 90px;
        height: 90px;
    }

    .header h1 {
        font-size: 22px;
    }

    .section {
        margin-bottom: 30px;
    }

    .section h2 {
        font-size: 18px;
    }

    body {
        font-size: 14px;
    }
}