:root {
    --primary: #1a4480;
    --primary-dark: #0c2e5c;
    --text: #2c2c2c;
    --grey: #5a5a5a;
    --light-grey: #888;
    --border: #e5e5e5;
    --accent: #c0392b;
    --bg: #ffffff;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 400;
    color: var(--text);
    background-color: var(--bg);
    font-size: 16px;
    line-height: 1.55;
    letter-spacing: 0.2px;
}

p { margin: 0 0 12px 0; }

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover { color: var(--accent); }

em, i { font-style: italic; }
b, strong { font-weight: 600; }

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

/* ---------- Header ---------- */
#header {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.9);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
    z-index: 100;
}

#header-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#header-name {
    font-size: 1.05em;
    font-weight: 600;
    color: var(--primary);
}

#header-nav { display: flex; gap: 28px; }

#header-nav a {
    color: var(--grey);
    font-weight: 500;
    font-size: 0.95em;
}

#header-nav a:hover { color: var(--primary); }

/* ---------- Profile ---------- */
#profile {
    padding: 50px 0 36px 0;
    border-bottom: 1px solid var(--border);
}

#profile-inner {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

#profile-pic { flex-shrink: 0; }

#profile-pic img {
    width: 200px;
    height: auto;
    border-radius: 4px;
    display: block;
}

#profile-text { flex: 1; min-width: 0; }

#profile-name {
    font-size: 2.4em;
    font-weight: 500;
    color: var(--primary);
    margin: 0 0 4px 0;
    line-height: 1.1;
}

#profile-name .cn {
    font-size: 0.6em;
    font-weight: 400;
    color: var(--grey);
    margin-left: 8px;
}

#profile-affil {
    color: var(--grey);
    margin-bottom: 14px;
    font-size: 1.0em;
}

#profile-text p { margin: 0 0 12px 0; }

#profile-links {
    margin-top: 18px;
    font-size: 0.95em;
    color: var(--grey);
}

#profile-links a {
    font-weight: 500;
    margin: 0 2px;
}

#profile-links .sep { color: var(--light-grey); margin: 0 4px; }

/* ---------- Sections ---------- */
.section {
    padding: 36px 0 30px 0;
    border-bottom: 1px solid var(--border);
}

.section:last-of-type { border-bottom: none; }

.section h1 {
    font-size: 1.55em;
    font-weight: 600;
    color: var(--primary);
    margin: 0 0 18px 0;
}

.section h2 {
    font-size: 1.08em;
    font-weight: 600;
    color: var(--primary-dark);
    margin: 26px 0 12px 0;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

.section h2:first-of-type { margin-top: 6px; }

/* ---------- News ---------- */
#news ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#news li {
    padding: 7px 0;
    border-bottom: 1px dashed var(--border);
}

#news li:last-child { border-bottom: none; }

#news b {
    color: var(--primary);
    margin-right: 10px;
    font-weight: 600;
    display: inline-block;
    min-width: 100px;
}

/* ---------- Projects ---------- */
.project {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    margin-bottom: 26px;
    padding-bottom: 6px;
}

.project-thumb {
    flex-shrink: 0;
    width: 170px;
    display: block;
}

.project-thumb img {
    width: 100%;
    height: auto;
    display: block;
    border: 1px solid var(--border);
    border-radius: 2px;
    transition: opacity 0.2s ease;
}

.project-thumb:hover img { opacity: 0.85; }

.project-body { flex: 1; min-width: 0; }

.project-title {
    font-weight: 600;
    color: var(--primary);
    font-size: 1.02em;
    margin-bottom: 3px;
    display: block;
}

a.project-title { text-decoration: none; }
a.project-title:hover { color: var(--accent); }

.project-meta {
    color: var(--light-grey);
    margin-bottom: 8px;
    font-size: 0.9em;
}

.project-meta em { font-style: italic; }

.project-body p { margin: 0 0 6px 0; }

.project-body ul {
    margin: 6px 0 0 0;
    padding-left: 22px;
    list-style: disc;
}

.project-body ul li {
    margin-bottom: 4px;
    color: var(--text);
}

.project-links {
    margin-top: 6px;
    font-size: 0.92em;
    color: var(--light-grey);
}

.project-links a { font-weight: 500; }
.project-links .sep { color: var(--light-grey); margin: 0 6px; }

/* No-thumbnail variant */
.project.no-thumb .project-body { width: 100%; }

/* ---------- Publications ---------- */
.pub-list {
    counter-reset: pub;
    padding-left: 0;
    list-style: none;
    margin: 0;
}

.pub-list li {
    counter-increment: pub;
    padding-left: 38px;
    position: relative;
    margin-bottom: 12px;
}

.pub-list li::before {
    content: "[" counter(pub) "]";
    position: absolute;
    left: 0;
    top: 0;
    font-weight: 600;
    color: var(--grey);
    font-variant-numeric: tabular-nums;
}

.author-self {
    font-weight: 600;
    color: var(--primary-dark);
}

/* ---------- Misc ---------- */
.section ul.plain {
    list-style: disc;
    padding-left: 22px;
    margin: 0 0 14px 0;
}

.section ul.plain li { margin-bottom: 4px; }

footer {
    padding: 32px 0;
    color: var(--light-grey);
    font-size: 0.88em;
    text-align: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 700px) {
    #profile-inner {
        flex-direction: column;
        gap: 20px;
        text-align: left;
    }
    #profile-name { font-size: 1.9em; }
    #header-name { display: none; }
    #header-nav { gap: 18px; }
    #header-nav a { font-size: 0.88em; }
    #profile-pic img { width: 160px; }
    #news b { min-width: 90px; }
    .container { padding: 0 18px; }
    .project { flex-direction: column; gap: 12px; }
    .project-thumb { width: 100%; max-width: 280px; }
}