:root {
  --navy: #1a2332; --navy-mid: #243044; --navy-light: #2e3d52;
  --header-bg: #dee3e7;
  --accent: #4a7c8f; --accent-dark: #3a6575;
  --bg: #ffffff; --bg-alt: #f7f7f5;
  --text: #2a2a2a; --text-muted: #6b7280;
  --border: #e2e0dc; --border-light: #eceae6;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Outfit', -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); font-weight: 300; font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: var(--accent-dark); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }

.site-nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: var(--navy); border-bottom: 1px solid rgba(255,255,255,0.08); }
.nav-inner { max-width: 1100px; margin: 0 auto; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; height: 56px; }
.nav-name { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: #fff; letter-spacing: 0.01em; }
.nav-name:hover { color: rgba(255,255,255,0.8); }
.nav-links { list-style: none; display: flex; gap: 2rem; }
.nav-links a { color: rgba(255,255,255,0.65); font-size: 0.82rem; font-weight: 400; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.3rem 0; border-bottom: 2px solid transparent; transition: all 0.2s; }
.nav-links a:hover, .nav-links a.active { color: #fff; border-bottom-color: rgba(255,255,255,0.5); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px 0; transition: 0.3s; }

.hero-banner { margin-top: 56px; position: relative; width: 100%; height: 280px; overflow: hidden; background: #0a0e14; }
.hero-banner img { width: 100%; height: 100%; object-fit: cover; object-position: center 55%; }
.hero-banner-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; padding: 0 2rem; background: linear-gradient(to right, rgba(10,14,20,0.65) 0%, rgba(10,14,20,0.4) 50%, rgba(10,14,20,0.2) 100%); }
.hero-banner-inner { max-width: 1100px; margin: 0 auto; width: 100%; }
.hero-banner h1 { font-family: var(--font-display); font-size: 2.8rem; font-weight: 700; color: rgba(255,255,255,0.95); line-height: 1.1; margin-bottom: 0.7rem; text-shadow: 0 2px 16px rgba(0,0,0,0.6); }
.hero-banner .hero-subtitle { font-size: 0.92rem; font-weight: 300; color: rgba(255,255,255,0.85); line-height: 1.55; text-shadow: 0 1px 10px rgba(0,0,0,0.6); }

.about-section { max-width: 1100px; margin: 0 auto; padding: 2.5rem 2rem 3.5rem; }
.about-heading { font-family: var(--font-display); font-size: 1.4rem; font-weight: 600; color: var(--navy); margin: 0 0 1rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--navy); display: inline-block; }
.about-section p { font-size: 0.92rem; line-height: 1.8; color: var(--text); max-width: 820px; }
.about-section p + p { margin-top: 1rem; }

.page-header { margin-top: 56px; background: var(--header-bg); padding: 2.5rem 2rem 2rem; border-bottom: 1px solid #c8cfd4; }
.page-header-inner { max-width: 1100px; margin: 0 auto; }
.page-header h1 { font-family: var(--font-display); font-size: 2rem; font-weight: 700; color: var(--navy); }
.page-header p { color: var(--text-muted); font-size: 0.88rem; margin-top: 0.4rem; max-width: 600px; }
.page-header p a { color: var(--accent-dark); }
.page-header p a:hover { color: var(--accent); }
.page-body { max-width: 1100px; margin: 0 auto; padding: 2rem 2rem 4rem; }

.section-heading { font-family: var(--font-display); font-size: 1.4rem; font-weight: 600; color: var(--navy); margin: 2rem 0 1rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--navy); display: inline-block; }
.section-note { font-size: 0.86rem; color: var(--text-muted); margin-bottom: 1.5rem; max-width: 700px; }

.pub-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.pub-table thead th { text-align: left; font-weight: 500; font-size: 0.76rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); padding: 0.7rem 1rem; border-bottom: 2px solid var(--navy); background: var(--bg-alt); }
.pub-table tbody td { padding: 1rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.pub-table tbody tr:hover { background: var(--bg-alt); }
.pub-title { font-weight: 500; color: var(--navy); line-height: 1.4; }
.pub-title a { color: var(--navy); border-bottom: 1px solid transparent; }
.pub-title a:hover { color: var(--accent-dark); border-bottom-color: var(--accent-dark); }
.pub-coauthor { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.25rem; }
.pub-venue { font-style: italic; color: var(--text); }
.pub-year { font-variant-numeric: tabular-nums; color: var(--text-muted); white-space: nowrap; }
.pub-badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 3px; font-size: 0.7rem; font-weight: 500; letter-spacing: 0.03em; text-transform: uppercase; white-space: nowrap; }
.badge-gssr { background: #1a3a5c; color: #fff; } .badge-milrev { background: #3d5a2a; color: #fff; }
.badge-citadel { background: #1c3f6e; color: #d4c6a0; } .badge-csis { background: #003366; color: #fff; }
.badge-isw { background: #8B0000; color: #fff; } .badge-isd { background: #1a1a2e; color: #e0d5c1; }
.badge-choice { background: #c0392b; color: #fff; } .badge-worldbank { background: #002244; color: #fff; }
.badge-nwc { background: #003366; color: #d4af37; } .badge-sdstate { background: #0033A0; color: #FFD100; }
.badge-nato { background: #004990; color: #fff; }
.badge-tedstevens { background: #b8d8e8; color: #0a2540; }
.badge-yjia { background: #00356B; color: #f4ecd0; }
.badge-ijts { background: #B22234; color: #fff; }

.conf-table { width: 100%; border-collapse: collapse; font-size: 0.86rem; margin-top: 1rem; }
.conf-table thead th { text-align: left; font-weight: 500; font-size: 0.76rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); padding: 0.65rem 1rem; border-bottom: 2px solid var(--navy); background: var(--bg-alt); }
.conf-table tbody td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.conf-table tbody tr:hover { background: var(--bg-alt); }

.writing-list { margin-top: 1.5rem; }
.writing-item { display: grid; grid-template-columns: 140px 1fr; gap: 1.2rem; padding: 1.2rem 0; border-bottom: 1px solid var(--border); align-items: start; }
.writing-item:last-child { border-bottom: none; }
.writing-meta { display: flex; flex-direction: column; align-items: flex-start; gap: 0.4rem; }
.writing-date { font-size: 0.78rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.writing-content h3 { font-family: var(--font-display); font-size: 1.12rem; font-weight: 600; line-height: 1.35; margin-bottom: 0.3rem; }
.writing-content h3 a { color: var(--navy); } .writing-content h3 a:hover { color: var(--accent-dark); }
.writing-content .writing-blurb { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

.cv-actions { margin-bottom: 2rem; display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.6rem 1.4rem; background: var(--navy); color: #fff; font-family: var(--font-body); font-size: 0.82rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; border-radius: 3px; transition: all 0.2s; text-decoration: none; }
.btn:hover { background: var(--navy-light); color: #fff; }
.btn-outline { background: transparent; color: var(--navy); border: 1.5px solid var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }
.cv-embed { width: 100%; height: 80vh; min-height: 600px; border: 1px solid var(--border); border-radius: 4px; }

.contact-layout { display: grid; grid-template-columns: 220px 1fr; gap: 3rem; margin-top: 1rem; align-items: start; }
.contact-photo { width: 200px; border-radius: 4px; box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
.contact-info-block h2 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; color: var(--navy); margin-bottom: 0.2rem; }
.contact-location { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1.2rem; }
.contact-list { list-style: none; }
.contact-list li { padding: 0.6rem 0; border-bottom: 1px solid var(--border-light); display: flex; align-items: center; gap: 0.7rem; }
.contact-list li:last-child { border-bottom: none; }
.contact-icon { width: 32px; height: 32px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-icon svg { width: 14px; height: 14px; fill: var(--navy); }
.contact-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); display: block; }
.contact-value { font-size: 0.9rem; color: var(--navy); font-weight: 400; }
.contact-value a { color: var(--navy); } .contact-value a:hover { color: var(--accent-dark); }

.site-footer { background: var(--navy); padding: 1.5rem 2rem; text-align: center; }
.footer-inner p { color: rgba(255,255,255,0.35); font-size: 0.76rem; letter-spacing: 0.03em; }

@media (max-width: 768px) {
  .hero-banner { height: 200px; } .hero-banner h1 { font-size: 2rem; }
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 56px; left: 0; right: 0; background: var(--navy); flex-direction: column; padding: 1rem 2rem 1.5rem; gap: 0; border-top: 1px solid rgba(255,255,255,0.1); }
  .nav-links.open { display: flex; } .nav-links li { padding: 0.5rem 0; }
  .pub-table, .pub-table thead, .pub-table tbody, .pub-table th, .pub-table td, .pub-table tr { display: block; }
  .pub-table thead { display: none; } .pub-table tbody td { padding: 0.4rem 0; border: none; }
  .pub-table tbody td:first-child { padding-top: 1rem; } .pub-table tbody td:last-child { padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
  .conf-table, .conf-table thead, .conf-table tbody, .conf-table th, .conf-table td, .conf-table tr { display: block; }
  .conf-table thead { display: none; } .conf-table tbody td { padding: 0.3rem 0; border: none; }
  .conf-table tbody td:first-child { padding-top: 1rem; } .conf-table tbody td:last-child { padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
  .writing-item { grid-template-columns: 1fr; } .writing-meta { flex-direction: row; align-items: center; }
  .contact-layout { grid-template-columns: 1fr; } .contact-photo { width: 160px; margin: 0 auto; }
}