/* Junil Ryu — shared site styles */
        :root {
            --ink: #0f1923;
            --ink-soft: #2c3e50;
            --ink-muted: #6b7a8d;
            --water: #1a6b8a;
            --water-light: #3a9fc4;
            --water-pale: #e8f4f8;
            --foam: #f0f7fb;
            --surface: #ffffff;
            --border: #dce8ef;
            --accent: #0d5a75;
            --gold: #c4933f;
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: Arial, sans-serif;
            font-weight: 400;
            color: var(--ink);
            background: var(--foam);
            line-height: 1.7;
            overflow-x: hidden;
        }

        /* ── BACKGROUND ── */
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse 80% 50% at 10% 20%, rgba(26,107,138,0.06) 0%, transparent 60%),
                radial-gradient(ellipse 60% 40% at 90% 80%, rgba(58,159,196,0.05) 0%, transparent 60%);
            pointer-events: none;
            z-index: 0;
        }

        /* ── LAYOUT ── */
        .page-wrap {
            position: relative;
            z-index: 1;
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px 80px;
        }

        /* ── NAV ── */
        .top-nav {
            position: sticky;
            top: 0;
            z-index: 100;
            display: flex;
            justify-content: flex-end;
            gap: 4px;
            padding: 14px 0;
            background: rgba(240,247,251,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            margin: 0 -24px;
            padding: 14px 24px;
        }

        .top-nav a {
            font-family: Arial, sans-serif;
            font-size: 0.72rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--ink-muted);
            text-decoration: none;
            padding: 5px 12px;
            border-radius: 20px;
            transition: all 0.2s;
        }

        .top-nav a:hover {
            color: var(--water);
            background: var(--water-pale);
        }

        /* ── HERO ── */
        .hero {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 48px;
            align-items: center;
            padding: 72px 0 56px;
            border-bottom: 1px solid var(--border);
        }

        .hero-text {}

        .hero-eyebrow {
            font-family: Arial, sans-serif;
            font-size: 0.72rem;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: var(--water);
            margin-bottom: 16px;
        }

        .hero-name {
            font-family: Arial, sans-serif;
            font-size: clamp(3rem, 6vw, 4.5rem);
            font-weight: 300;
            line-height: 1.05;
            color: var(--ink);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .hero-title {
            font-size: 0.95rem;
            color: var(--ink-muted);
            font-weight: 300;
            margin-bottom: 28px;
            line-height: 1.5;
        }

        .hero-title strong {
            color: var(--ink-soft);
            font-weight: 600;
        }

        .hero-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        /* ── IDENTITY / BIO INTRO ── */
        .bio-intro {
            padding: 0px 0 20px;
            border-bottom: 1px solid var(--border);
        }

        .bio-intro p {
            font-family: Arial, sans-serif;
            font-weight: 400;
            font-size: clamp(1rem, 2.4vw, 1.05rem);
            line-height: 1.55;
            color: var(--ink-soft);
            max-width: 800px;
            position: relative;
            padding-left: 22px;
            border-left: 2px solid var(--water-light);
        }

        .hero-links a {
            font-size: 0.8rem;
            text-decoration: none;
            padding: 7px 16px;
            border-radius: 24px;
            font-weight: 400;
            transition: all 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            letter-spacing: 0.02em;
        }

        .link-email {
            color: var(--ink-soft);
            border: 1px solid var(--border);
            background: white;
        }

        .link-email:hover {
            border-color: var(--water-light);
            color: var(--water);
        }

        .link-scholar {
            color: white;
            background: var(--water);
            border: 1px solid var(--water);
        }

        .link-scholar:hover {
            background: var(--accent);
            border-color: var(--accent);
        }

        .link-linkedin {
            color: #0077b5;
            border: 1px solid #cde0ec;
            background: #f0f7fc;
        }

        .link-linkedin:hover {
            background: #0077b5;
            color: white;
            border-color: #0077b5;
        }

        /* ── PROFILE IMAGE ── */
        .hero-photo {
            flex-shrink: 0;
        }

        .hero-photo img {
            width: 180px;
            height: 225px;
            object-fit: cover;
            border-radius: 4px;
            box-shadow: 0 8px 40px rgba(15,25,35,0.12), 0 2px 8px rgba(15,25,35,0.08);
            display: block;
        }

        .hero-photo .photo-placeholder {
            width: 180px;
            height: 225px;
            background: linear-gradient(135deg, var(--water-pale) 0%, var(--border) 100%);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Cormorant Garamond', serif;
            font-size: 2.5rem;
            color: var(--water);
            letter-spacing: 0.05em;
        }

        /* ── SECTIONS ── */
        .section {
            padding: 32px 0 32px;
            border-bottom: 1px solid var(--border);
        }

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

        .section-label {
            font-family: Arial, sans-serif;
            font-size: 0.68rem;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--water);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .section-label::after {
            content: '';
            flex: 1;
            height: 1px;
            background: linear-gradient(to right, var(--border) 0%, transparent 100%);
        }

        .section-title {
            font-family: Arial, sans-serif;
            font-size: 1.9rem;
            font-weight: 300;
            color: var(--ink);
            line-height: 1.2;
            margin-bottom: 16px;
        }

        /* ── ABOUT / INTERESTS ── */
        .interests-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 24px;
        }

        .interest-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 20px 22px;
            transition: box-shadow 0.2s, border-color 0.2s;
        }

        .interest-card:hover {
            border-color: var(--water-light);
            box-shadow: 0 4px 24px rgba(26,107,138,0.08);
        }

        .interest-card-label {
            font-family: Arial, sans-serif;
            font-size: 0.65rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--water-light);
            margin-bottom: 10px;
        }

        .interest-card p {
            font-size: 0.88rem;
            color: var(--ink-soft);
            line-height: 1.6;
        }

        .skill-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 10px;
        }

        .skill-tag {
            font-family: Arial, sans-serif;
            font-size: 0.68rem;
            letter-spacing: 0.05em;
            padding: 4px 10px;
            background: var(--water-pale);
            color: var(--water);
            border-radius: 3px;
        }

        /* ── RESEARCH GALLERY ── */
        .research-gallery {
            display: grid;
            grid-template-columns: repeat(2, 2fr);
            gap: 20px;
            margin-top: 20px;
        }

        .research-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 8px;
            overflow: hidden;
            transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
        }

        .research-card:hover {
            border-color: var(--water-light);
            box-shadow: 0 10px 30px rgba(26,107,138,0.12);
            transform: translateY(-2px);
        }

        .research-card-img {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--water-pale);
        }

        /* Replace these gradients with <img src="research/xxx.jpg"> once you have real figures/photos */
        .research-card-img.pattern-1 {
            background:
                radial-gradient(circle at 30% 30%, rgba(58,159,196,0.55) 0%, transparent 45%),
                radial-gradient(circle at 70% 65%, rgba(13,90,117,0.45) 0%, transparent 50%),
                linear-gradient(135deg, var(--water-pale) 0%, var(--water-light) 140%);
        }
        .research-card-img.pattern-2 {
            background:
                radial-gradient(ellipse 60% 40% at 50% 40%, rgba(196,147,63,0.35) 0%, transparent 60%),
                radial-gradient(circle at 20% 80%, rgba(26,107,138,0.4) 0%, transparent 50%),
                linear-gradient(160deg, var(--water-pale) 0%, var(--accent) 160%);
        }
        .research-card-img.pattern-3 {
            background:
                repeating-radial-gradient(circle at 50% 50%, rgba(255,255,255,0.5) 0px, transparent 2px, transparent 14px),
                radial-gradient(circle at 60% 30%, rgba(58,159,196,0.5) 0%, transparent 55%),
                linear-gradient(150deg, var(--water-light) 0%, var(--ink) 160%);
        }

        .research-card-tag {
            position: absolute;
            top: 10px;
            left: 10px;
            font-family: Arial, sans-serif;
            font-size: 0.62rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: white;
            background: rgba(15,25,35,0.45);
            padding: 4px 9px;
            border-radius: 20px;
            backdrop-filter: blur(2px);
        }

        /* Play-button overlay, centered on the video/pattern area */
        .research-play-icon {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(15,25,35,0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(2px);
            transition: background 0.2s, transform 0.2s;
        }

        .research-card:hover .research-play-icon {
            background: rgba(15,25,35,0.6);
            transform: translate(-50%, -50%) scale(1.08);
        }

        .research-card-video {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        /* Keyword row under each video (used on the Research page) */
        .research-card-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 7px;
            padding: 14px 12px 14px;
        }

        .research-card-body {
            padding: 16px 18px 18px;
        }

        .research-card-title {
            font-family: Arial, sans-serif;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .research-card-desc {
            font-size: 0.82rem;
            color: var(--ink-muted);
            line-height: 1.55;
            margin-bottom: 10px;
        }

        .research-card-link {
            font-family: Arial, sans-serif;
            font-size: 0.72rem;
            letter-spacing: 0.03em;
            color: var(--water);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .research-card-link:hover { color: var(--accent); }

        @media (max-width: 640px) {
            .research-gallery { grid-template-columns: 1fr; }
        }

        /* ── TIMELINE ── */
        .timeline {
            position: relative;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 88px;
            top: 8px;
            bottom: 0;
            width: 1px;
            background: linear-gradient(to bottom, var(--border), transparent);
        }

        .tl-item {
            display: grid;
            grid-template-columns: 88px 1fr;
            gap: 0 16px;
            margin-bottom: 32px;
            position: relative;
        }

        .tl-item::before {
            content: '';
            position: absolute;
            left: 88px;
            top: 8px;
            width: 7px;
            height: 7px;
            background: var(--water);
            border-radius: 50%;
            transform: translateX(-3px);
            box-shadow: 0 0 0 3px var(--foam);
        }

        .tl-date {
            font-family: Arial, sans-serif;
            font-size: 0.68rem;
            color: var(--ink-muted);
            letter-spacing: 0.03em;
            padding-top: 2px;
            text-align: left;
            line-height: 1.4;
            white-space: nowrap;
        }

        .tl-body {}

        .tl-role {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--ink);
            margin-bottom: 2px;
        }

        .tl-place {
            font-size: 0.85rem;
            color: var(--ink-soft);
            margin-bottom: 3px;
        }

        .tl-advisor {
            font-size: 0.78rem;
            color: var(--ink-muted);
            font-style: italic;
        }

        .tl-sub {
            margin-top: 6px;
        }

        .tl-sub li {
            font-size: 0.83rem;
            color: var(--ink-soft);
            margin-bottom: 3px;
        }

        /* ── PUBLICATIONS ── */
        .pub-group-title {
            font-family: Arial, sans-serif;
            font-size: 1.1rem;
	    font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--ink-muted);
            margin: 32px 0 16px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border);
        }

        .pub-list {
            list-style: none;
            padding: 0;
        }

        .pub-item {
            display: grid;
            grid-template-columns: 28px 1fr;
            gap: 0 12px;
            margin-bottom: 18px;
            align-items: start;
        }

        .pub-num {
            font-family: Arial, sans-serif;
            font-size: 0.68rem;
            color: var(--ink-muted);
            padding-top: 3px;
            text-align: right;
        }

        .pub-text {
            font-size: 0.87rem;
            color: var(--ink-soft);
            line-height: 1.65;
        }

        .pub-text em {
            color: var(--ink);
            font-style: italic;
	    font-weight: 520;
        }

        .pub-text strong {
            color: var(--ink);
            font-weight: 700;
        }

        .badge {
            display: inline-block;
            font-size: 0.68rem;
            font-family: Arial, sans-serif;
            padding: 2px 7px;
            border-radius: 3px;
            vertical-align: middle;
            margin-left: 4px;
            font-style: normal;
            letter-spacing: 0.02em;
        }

        .badge-prep {
            background: #fef3e8;
            color: #b06a10;
            border: 1px solid #f6d5a8;
        }

        .badge-review {
            background: #ebf5ff;
            color: #1a6db0;
            border: 1px solid #b8d8f5;
        }

        .badge-revision {
            background: #f5ebff;
            color: #7a30b0;
            border: 1px solid #d8b8f5;
        }

        .badge-accepted {
            background: #e8f8ef;
            color: #1a7a42;
            border: 1px solid #a8e0c0;
        }

        /* ── AWARDS ── */
        .awards-list {
            list-style: none;
            padding: 0;
        }

        .award-item {
            display: grid;
            grid-template-columns: 72px 1fr;
            gap: 0 20px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            align-items: baseline;
        }

        .award-item:last-child {
            border-bottom: none;
        }

        .award-year {
            font-family: Arial, sans-serif;
            font-size: 0.72rem;
            color: var(--water);
            letter-spacing: 0.04em;
        }

        .award-text {
            font-size: 0.87rem;
            color: var(--ink-soft);
            line-height: 1.55;
        }

        /* ── FOOTER ── */
        .footer {
            text-align: center;
            padding: 48px 0 0;
            font-family: Arial, sans-serif;
            font-size: 0.68rem;
            color: var(--ink-muted);
            letter-spacing: 0.06em;
        }

        /* ── ANIMATIONS ── */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(16px); }
            to   { opacity: 1; transform: translateY(0); }
        }

        .hero { animation: fadeUp 0.6s ease both; }
        .section { animation: fadeUp 0.5s ease both; animation-play-state: paused; }
        .section.visible { animation-play-state: running; }

        /* ── RESPONSIVE ── */
        @media (max-width: 640px) {
            .hero {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-photo { order: -1; }
            .hero-photo img, .hero-photo .photo-placeholder {
                width: 100px;
                height: 125px;
            }
            .interests-grid { grid-template-columns: 1fr; }
            .timeline::before { left: 88px; }
            .tl-item { grid-template-columns: 88px 1fr; }
            .tl-item::before { left: 88px; }
        }

        /* ── NAV: BRAND + ACTIVE STATE ── */
        .top-nav {
            justify-content: space-between;
            align-items: center;
        }

        .nav-brand {
            font-family: 'Cormorant Garamond', serif;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--ink) !important;
            text-transform: none !important;
            letter-spacing: 0.01em !important;
            padding: 5px 4px !important;
        }

        .nav-brand:hover {
            background: transparent !important;
            color: var(--water) !important;
        }

        .nav-links {
            display: flex;
            gap: 4px;
        }

        .top-nav a.active {
            color: var(--water);
            background: var(--water-pale);
        }

        /* ── PAGE HEADER (sub-pages) ── */
        .page-header {
            padding: 56px 0 8px;
        }

        .page-header .hero-eyebrow {
            margin-bottom: 10px;
        }

        .page-header h1 {
            font-family: Arial, sans-serif;
            font-size: 2.1rem;
            font-weight: 300;
            color: var(--ink);
        }

        /* ── HOMEPAGE QUICK LINKS ── */
        .quick-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 8px;
        }

        .quick-card {
            display: block;
            background: white;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 20px 20px;
            text-decoration: none;
            transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
        }

        .quick-card:hover {
            border-color: var(--water-light);
            box-shadow: 0 10px 30px rgba(26,107,138,0.12);
            transform: translateY(-2px);
        }

        .quick-card-num {
            font-family: 'Cormorant Garamond', serif;
            font-size: 1.6rem;
            color: var(--water-light);
            margin-bottom: 10px;
        }

        .quick-card-title {
            font-family: Arial, sans-serif;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .quick-card-desc {
            font-size: 0.84rem;
            color: var(--ink-muted);
            line-height: 1.6;
        }

        @media (max-width: 640px) {
            .quick-links { grid-template-columns: 1fr; }
            .top-nav { flex-wrap: wrap; gap: 10px; }
        }