:root {
    --blue: #247fe9;
    --indigo: #3c5dce;
    --text: #404040;
    --muted: #737373;
    --line: #e5e7eb;
    --background: #ffffff;
    --light: #f8fafc;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
    background: var(--background);
    color: var(--text);
    font-family: "Inter", "Noto Sans SC", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.75;
    margin: 0;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { margin: 0 auto; max-width: 980px; padding-left: 24px; padding-right: 24px; width: 100%; }

.site-header {
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}
.nav-wrap { align-items: center; display: flex; justify-content: space-between; min-height: 64px; }
.site-name { color: #202020; font-size: 18px; font-weight: 700; letter-spacing: .02em; }
.site-name:hover { color: var(--blue); text-decoration: none; }
nav { display: flex; gap: 28px; }
nav a { color: #555; font-size: 13px; font-weight: 500; }
nav a:hover { color: var(--blue); text-decoration: none; }
.nav-toggle { background: transparent; border: 1px solid var(--line); color: var(--text); display: none; padding: 6px 10px; }

.intro { align-items: center; display: grid; gap: 54px; grid-template-columns: minmax(0, 1fr) 300px; padding-bottom: 68px; padding-top: 78px; }
.intro h1 { color: #222; font-size: 46px; letter-spacing: -.025em; line-height: 1.15; margin: 0 0 8px; }
.subtitle { color: var(--indigo); font-size: 18px; font-weight: 600; margin: 0 0 8px; }
.affiliation { color: var(--muted); font-size: 13px; margin: 0 0 25px; }
.intro-main > p:not(.subtitle):not(.affiliation):not(.profile-links) { margin: 8px 0; }
.profile-links { font-size: 13px; margin: 24px 0 0; }
.profile-links span { color: #aaa; margin: 0 8px; }
.intro-figure { margin: 0; }
.intro-figure img { background: #fff; border: 1px solid var(--line); display: block; width: 100%; }
.intro-figure figcaption { color: var(--muted); font-size: 11px; margin-top: 7px; text-align: right; }

.research-intro { gap: 40px; grid-template-columns: minmax(0, 1fr) 360px; }
.research-collage { display: grid; gap: 16px 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 420px; width: 100%; }
.research-collage figure { margin: 0; min-width: 0; }
.research-collage img { aspect-ratio: 3 / 2; background: #fff; border: 1px solid var(--line); display: block; height: auto; object-fit: contain; width: 100%; }
.research-collage figcaption { color: var(--indigo); font-size: 11px; font-weight: 500; line-height: 1.5; margin-top: 6px; text-align: center; }

.section { border-top: 1px solid var(--line); padding-bottom: 58px; padding-top: 54px; }
.section h2 { color: #222; font-size: 25px; line-height: 1.3; margin: 0 0 25px; }
.section p { margin: 8px 0; }
.section-title-row { align-items: baseline; display: flex; justify-content: space-between; }
.section-title-row > a { font-size: 12px; }

.research-list { margin: 0; padding-left: 21px; }
.research-list li { margin: 9px 0; padding-left: 4px; }
.research-list strong { color: #292929; }

.publication-year { margin-top: 12px; }
.publication-year + .publication-year { border-top: 1px solid var(--line); margin-top: 30px; padding-top: 30px; }
.publication-year h3 { color: var(--indigo); font-size: 15px; font-weight: 600; margin: 0 0 22px; }
.publication-list { list-style: none; margin: 0; padding: 0; }
.publication-list li { align-items: center; display: grid; gap: 28px; grid-template-columns: 220px minmax(0, 1fr); margin: 0 0 32px; }
.paper-media { aspect-ratio: 4 / 3; background: #fff; display: block; height: auto; object-fit: contain; width: 100%; }
.paper-media img { background: #fff; display: block; height: 100%; object-fit: contain; width: 100%; }
.paper-media:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }
.paper-details { min-width: 0; overflow-wrap: break-word; }
.publication-list p { color: #666; font-size: 13px; line-height: 1.6; margin: 2px 0; }
.publication-list .paper-title { color: #292929; font-size: 15px; font-weight: 600; line-height: 1.55; }
.publication-list .venue { color: var(--indigo); font-style: italic; }
.publication-list .paper-links { font-size: 12px; }
.publication-list strong { color: #333; }
.note { color: var(--muted); font-size: 11px; }

.news-list { list-style: none; margin: 0; padding: 0; }
.news-list li { display: grid; gap: 20px; grid-template-columns: 78px 1fr; margin: 8px 0; }
.news-list time { color: var(--indigo); font-size: 12px; font-weight: 600; }

footer { background: var(--light); border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.footer-inner { display: flex; justify-content: space-between; padding-bottom: 22px; padding-top: 22px; }

@media (max-width: 760px) {
    html { scroll-padding-top: 60px; }
    .container { padding-left: 18px; padding-right: 18px; }
    .nav-wrap { min-height: 58px; }
    .nav-toggle { display: block; }
    nav { background: #fff; border-bottom: 1px solid var(--line); display: none; left: 0; padding: 8px 18px 16px; position: absolute; right: 0; top: 58px; }
    nav.is-open { display: grid; gap: 0; }
    nav a { border-top: 1px solid var(--line); padding: 9px 0; }
    .intro { gap: 32px; grid-template-columns: 1fr; padding-bottom: 48px; padding-top: 48px; }
    .intro h1 { font-size: 38px; }
    .intro-figure { max-width: 420px; }
    .section { padding-bottom: 44px; padding-top: 42px; }
    .publication-list li { gap: 22px; grid-template-columns: 180px minmax(0, 1fr); }
}

@media (max-width: 600px) {
    .publication-list li { gap: 14px; grid-template-columns: minmax(0, 1fr); margin-bottom: 34px; }
    .paper-media { max-width: 300px; }
}

@media (max-width: 480px) {
    body { font-size: 14px; }
    .profile-links span { margin: 0 4px; }
    .section-title-row { align-items: flex-start; flex-direction: column; margin-bottom: 25px; }
    .section-title-row h2 { margin-bottom: 4px; }
    .news-list li { gap: 4px; grid-template-columns: 1fr; margin-bottom: 15px; }
    .footer-inner { flex-direction: column; gap: 3px; }
}