```css
/* =====GENERAL=======*/

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

html {scroll-behavior: smooth;}

body {font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;

    color: #2d3748;e
    background: #ffffff;
    line-height: 1.7;}

a {
    color: inherit;
    text-decoration: none;
}

p {
    margin-bottom: 1.0rem;
}

/* =====LEFT SIDEBAR=======*/
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 25vw;
    height: 100vh;
    background: #eaf4fb;
    overflow-y: auto;
}

.sidebar-content {
    padding: 4rem 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: left;
}

/* Profile picture */
.profile-photo {
    width: 180px;
    height: 180px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    border-radius: 50%;
    background: #dbeaf4;
}
.profile-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Name */
.name {
    width: 100%;
    color: #2d3748;
    font-size: 1.30rem;
    margin-bottom: 0.25rem;    
    text-align: left;  
    font-weight: bold; 
}

.profile {
    width: 100%;
    color: rgb(100,100,100);
    font-size: 1.1rem;
    margin-bottom: 0.00001rem;
    text-align: left;   
}

/* Contact information */
.contact-info {
    width: 100%;
    margin-bottom: 2.5rem;
    color: #4a5568;
    font-size: 0.88rem;
    text-align: left;
}

.contact-info p {
    margin-bottom: 0.7rem;
}

.contact-info a {
    color: #2b6cb0;
    word-break: break-word;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* =====SIDEBAR NAVIGATION======== */

.sidebar-nav {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    text-align: left;
}

.sidebar-nav a {
    padding: 0.65rem 0.8rem;
    border-radius: 6px;
    color: #4a5568;
    font-size: 1.0rem;
    font-weight: bold;
}

.sidebar-nav a:hover {
    background: rgba(255, 255, 255, 0.65);
    color: #1a365d;
}

/* ======MAIN CONTENT====== */

.main-content {
    margin-left: 25vw;
    width: 75vw;
}

.section {
    max-width: 950px;
    margin: 0 auto;
    padding: 6rem 3rem;
}

.section-alt {
    max-width: none;
    background: #f7f9fc;
}

/* ======TYPOGRAPHY=========== */

.eyebrow {
    margin-bottom: 0.5rem;
    color: #718096;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

h2 {
    margin-bottom: 2.5rem;
    color: #1a202c;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.2;
}

h3 {
    margin-bottom: 0.5rem;
    color: #2d3748;
    font-size: 1.25rem;
}

.intro {
    color: #4a5568;
    font-size: 1.25rem;
}

.justified {
    text-align: justify;
}

/* ===GITHUB==========*/
.social-link {
    display: flex;
    align-items: left;
    justify-content: left;
    gap: 0.5rem;
}

.social-icon {
    width: 20px;
    height: 20px;
}

/* =======CONTENT CARDS========== */

.content-card {
    max-width: 800px;
    padding: 2rem;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
}

/* ========THESIS BUTTON========= */

.button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.7rem 1.2rem;
    background: #2b6cb0;
    color: #ffffff;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
}

.button:hover {
    background: #1a4f85;
}

/* RESEARCH INTERESTS + VIDEO */

.research-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.research-text {
    max-width: 600px;
}

.research-video {
    width: 100%;
}

.research-video video {
    display: block;
    width: 100%;
    border-radius: 8px;
    background: #000000;
}

.video-caption {
    margin-top: 0.8rem;
    color: #718096;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ======EDUCATION TIMELINE======= */

.timeline {
    max-width: 800px;
    border-left: 2px solid #e2e8f0;
    padding-left: 2rem;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item::before {
    content: "";
    position: absolute;
    width: 10px;
    height: 10px;
    left: -2.4rem;
    top: 0.6rem;
    background: #ffffff;
    border: 2px solid #718096;
    border-radius: 50%;
}

.date {
    margin-bottom: 0.4rem;
    color: #718096;
    font-size: 0.85rem;
    font-weight: 600;
}

ul {
    margin-top: 1rem;
    padding-left: 1.5rem;
}

/* =====SIMULATION VIDEOS==== */

.video-grid {
    display: grid;
    grid-template-columns:
        repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.video-card {
    padding: 1rem;
    background: #f7f9fc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
}

.video-card video {
    display: block;
    width: 100%;
    margin-bottom: 1rem;
    border-radius: 6px;
    background: #000000;
}

.video-card h3 {
    font-size: 1.1rem;
}

.video-card p {
    font-size: 0.9rem;
    color: #718096;
}

/* =========TEACHING========== */
.teaching-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.teaching-item:first-child {
    padding-top: 0;
}

.teaching-item:last-child {
    padding-bottom: 0;
    border-bottom: none;
}

/* ========FOOTER========== */
footer {
    padding: 2rem;
    border-top: 1px solid #e2e8f0;
    color: #718096;
    text-align: center;
    font-size: 0.85rem;
}

/* =======MOBILE======= */
@media (max-width: 800px) {
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
    }

    .sidebar-content {padding: 2.5rem 1.5rem;}
    .sidebar-nav {align-items: center; text-align: center;}
    .main-content {margin-left: 0; width: 100%;}
    .section {padding: 4rem 1.5rem;}
    .profile-photo {width: 150px; height: 150px;}
}
```