:root {
    --bg: #f4f3ef;
    --surface: #ffffff;
    --surface-2: #eeece5;
    --ink: #1c1e26;
    --ink-soft: #5b5f70;
    --ink-faint: #8b8e9c;
    /*--accent: #b95e1c;
    --accent-tint: #f4e3d3;*/
    --accent: #148fc0;
    --accent-tint: #d3ecf4;
    --line: #e1ddd1;
    --shadow: 0 1px 2px rgba(28,30,38,.04), 0 8px 24px rgba(28,30,38,.06);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #131319;
        --surface: #1b1c24;
        --surface-2: #20212b;
        --ink: #eae7e0;
        --ink-soft: #a7aabb;
        --ink-faint: #787c8d;
        /* --accent: #e2933f; */
        --accent: #46b7e4;
        --accent-tint: #3a2c1c;
        --line: #2c2d38;
        --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
    }
}

html {
    scroll-padding-top: 66px; /* header height */
}

body {
    margin: 0px;
    padding: 0px;
    font-family: 'Source Sans 3', system-ui, -apple-system, sans-serif;
    font-size: 100%;
    line-height: 1.55;
    background-color: var(--bg);
    color: var(--ink);
}

a {
    font-weight: normal;
    text-decoration: none;
    color: var(--accent);
}

a:hover {
    text-decoration: underline;
}

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

h1, h2, h3 {
    font-family: 'Archivo', system-ui, -apple-system, sans-serif;
    text-wrap: balance;
}

h1 {
    font-size: 1.7em;
    font-weight: 700;

    border-top: 1px solid var(--line);
    margin-top: 20px;
    margin-bottom: 5px;
    padding-top: 14px;
}

h2 {
    font-size: 1.25em;
    font-weight: 700;

    color: var(--ink);

    margin-top: 10px;
    margin-bottom: 0px;
}

h3 {
    font-size: 1em;
    font-weight: 700;

    margin-top: 5px;
    margin-bottom: 0px;
}

hr {
    border: none;
    border-top: solid 1px var(--line);
}

ul, ol {
    margin: 0;
}

ul li::marker {
    color: var(--ink-faint);
}

li.conseq {
    list-style: none;
    margin-left: -1.1em;
    padding-left: 1.1em;
    position: relative;
}

li.conseq::before {
    content: "\2192";
    color: var(--accent);
    position: absolute;
    left: 0;
}

.main {
    font-family: 'Source Sans 3', system-ui, -apple-system, sans-serif;
    font-size: 1em;
    font-weight: normal;

    color: var(--ink);
    background-color: var(--bg);

    max-width: 760px;
    overflow: auto;
    margin: auto;

    padding-top: 70px;
    padding-bottom: 56px;
    padding-left: 16px;
    padding-right: 16px;
}

.contents {
    font-family: 'Source Sans 3', system-ui, -apple-system, sans-serif;
    font-size: 1em;
    font-weight: normal;

    background-color: var(--bg);
}

.contents_paragraph {
    padding-top: 5px;
    padding-bottom: 5px;
}

/* ---------- collapsible content boxes (accordions) ---------- */
.contents_box {
    border: 1px solid var(--line);
    border-radius: 12px;
    margin-top: 8px;
    margin-bottom: 12px;
    background: var(--surface);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.contents_box[data-open="true"] {
    border-color: var(--accent);
}

.contents_box_header {
    all: unset;
    box-sizing: border-box;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    font-family: 'Archivo', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--ink);

    padding: 14px 16px;
}

.contents_box_header:hover {
    background-color: var(--surface-2);
}

.contents_box_chevron {
    flex: none;
    width: 18px;
    height: 18px;
    stroke: var(--ink-soft);
    fill: none;
    stroke-width: 2;
    transition: transform .25s ease, stroke .25s ease;
}

.contents_box[data-open="true"] .contents_box_chevron {
    transform: rotate(180deg);
    stroke: var(--accent);
}

.contents_box_wrap {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows .28s ease;
}

.contents_box[data-open="true"] .contents_box_wrap {
    grid-template-rows: 1fr;
}

.contents_box_main {
    overflow: hidden;
}

.contents_box_main_inner {
    padding: 0 16px 18px;
    border-top: 1px solid var(--line);
    padding-top: 14px;
}

.contents_box_main_inner .contents {
    background-color: transparent;
}

.contents_old {
    color: var(--ink-soft);
}

/* ---------- topic tags ---------- */
.highlight_box {
    display: inline-block;
    background: var(--surface);
    color: var(--ink);
    border: 1px solid var(--line);

    border-radius: 20px;

    font-style: normal;
    font-size: 0.92em;

    padding: 5px 13px;

    margin: 3px 3px;

    transition: border-color .15s, background-color .15s;
}

.highlight_box:hover {
    background-color: var(--accent-tint);
    border-color: var(--accent);
    color: var(--ink);
}

a.highlight_box {
    color: var(--ink);
}

.figure_box {
    float: right;
    display: block;
    width: 35%;
    min-width: 140px;
    max-width: 240px;
    max-height: 100%;
    padding: 0 0 10px 16px;
    font-size: 0.8em;
    color: var(--ink-soft);
}

.figure_box img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--line);
    display: block;
}

.figure_box div {
    margin-top: 8px;
    line-height: 1.45;
}

@media (max-width: 520px) {
    .figure_box {
        float: none;
        width: 100%;
        max-width: none;
        padding: 10px 0;
    }
}

.vspace {
    height: 11pt;
}

.row {
    display: flex;
    gap: 24px;
    align-items: center;

    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 24px;
}

.column {
    flex: 50%;
}

@media (max-width: 560px) {
    .row {
        flex-direction: column;
        text-align: center;
        padding: 24px 18px;
    }
}

.bio_photo {
    width: 100%;
    max-width: 160px;
    border-radius: 12px;
    display: block;
    margin: 0 auto;
}

.bio_name {
    font-family: 'Archivo', sans-serif;
    font-size: 1.5em;
    font-weight: 700;
}

.bio_info a {
    color: var(--ink-soft);
}

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

.bio_links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
}

@media (max-width: 560px) {
    .bio_links {
        justify-content: center;
    }
}

.bio_links > a, .bio_links > span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.86em;
    color: var(--ink-soft);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 5px 12px;
}

.bio_links > a {
    text-decoration: none;
}

.bio_links > a:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.bio_links span a {
    color: inherit;
}

.bio_links img {
    display: block;
}

table.main, th.main, td.main {
    border: none;
}

/* ---------- publications ---------- */
.publist {
    padding-left: 1.6em;
}

.publist li {
    padding: 13px 0 13px 6px;
    border-top: 1px solid var(--line);
}

.publist li::marker {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85em;
    color: var(--ink-faint);
}

.publist li:first-child {
    border-top: none;
}

.publist.plain {
    list-style: none;
    padding-left: 0;
}

.pub_author {
    font-size: 0.92em;
    color: var(--ink-soft);
}

.pub_title {
    font-style: italic;
    font-weight: 500;
    margin: 3px 0;
}

.pub_journal {
    font-size: 0.92em;
}

.pub_link {
    text-decoration: none;
    color: var(--accent);
    border-bottom: 1px solid transparent;
}

.pub_link:hover {
    border-color: var(--accent);
    text-decoration: none;
}

.pub_year {
    color: var(--ink-faint);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85em;
}

/* ---------- teaching ---------- */
.term_label {
    font-weight: 700;
    font-family: 'Archivo', sans-serif;
    margin: 22px 0 8px;
}

.term_label:first-child {
    margin-top: 0;
}

.course_box {
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 12px;
    margin-bottom: 10px;
    background: var(--surface);
}

.course_box p {
    margin: 4px 0 0;
    color: var(--ink-soft);
}

/* ---------- team ---------- */
.team_list {
    list-style: none;
    padding: 0;
}

.team_member {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding: 12px 0;
    border-top: 1px solid var(--line);
}

.team_member:first-child {
    border-top: none;
}

.team_member a {
    font-weight: 600;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
}

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

.team_when {
    color: var(--ink-faint);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.86em;
    white-space: nowrap;
}

.obfuscate {
    display: none;
}

.job_ad {
    border: 2px solid var(--accent);
    background: var(--accent-tint);
    border-radius: 12px;
    text-align: center;
    padding: 12px;
    margin: 8px 0;
}