:root {
  --green: #1c3d2e;
  --green-deep: #12281e;
  --green-darker: #0b1a13;
  --gold: #c9a227;
  --gold-soft: #e4c15a;
  --paper: #f7f6f0;
  --ink: #1e2420;
  --ink-soft: #4c554e;
  --line: #e2ded0;
  --white: #ffffff;
  --shadow: 0 18px 40px -18px rgba(18,40,30,0.32);
  --font-head: 'Source Serif 4', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-body); color: var(--ink); background: var(--paper); line-height: 1.65; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-head); font-weight: 700; color: var(--green-darker); line-height: 1.2; margin: 0 0 0.5em; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

.nav { position: sticky; top: 0; z-index: 50; background: rgba(247,246,240,0.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 700; color: var(--green-darker); font-size: 1rem; }
.brand img { width: 30px; height: 30px; }
.links { display: flex; align-items: center; gap: 26px; }
.links a { font-weight: 500; font-size: 0.92rem; color: var(--ink-soft); }
.links a:hover { color: var(--green); }
.cta { background: var(--gold); color: var(--green-darker) !important; padding: 9px 20px; border-radius: 999px; font-weight: 700 !important; }
.cta:hover { background: var(--gold-soft); }
.burger { display: none; flex-direction: column; gap: 5px; width: 36px; height: 36px; background: none; border: none; cursor: pointer; }
.burger span { display: block; height: 2px; background: var(--green-darker); border-radius: 2px; }

/* Hero */
.hero { position: relative; overflow: hidden; background: var(--green); color: var(--white); padding: 90px 0 70px; }
.hero-tex {
  position: absolute; inset: 0; opacity: 0.6;
  background: radial-gradient(650px 380px at 88% -10%, rgba(201,162,39,0.22), transparent 60%),
              radial-gradient(500px 300px at 5% 105%, rgba(255,255,255,0.05), transparent 60%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 44px; align-items: center; }
.eyebrow { color: var(--gold-soft); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.75rem; margin-bottom: 12px; }
.hero h1 { color: var(--white); font-size: clamp(2rem, 4.4vw, 3rem); margin-bottom: 8px; }
.role { color: rgba(255,255,255,0.86); font-weight: 600; font-size: 1.05rem; margin-bottom: 18px; font-family: var(--font-head); }
.lead { color: rgba(255,255,255,0.76); max-width: 56ch; margin-bottom: 28px; }
.actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 0.94rem; transition: transform 0.15s, background 0.15s; }
.btn-primary { background: var(--gold); color: var(--green-darker); box-shadow: 0 10px 24px -8px rgba(201,162,39,0.5); }
.btn-primary:hover { background: var(--gold-soft); transform: translateY(-2px); }
.btn-ghost { border: 1.5px solid rgba(255,255,255,0.3); color: var(--white); }
.btn-ghost:hover { border-color: var(--gold-soft); color: var(--gold-soft); }
.hero-photo { display: flex; justify-content: center; }
.ring { width: min(260px, 58vw); aspect-ratio: 1; border-radius: 50%; padding: 7px; background: conic-gradient(from 180deg, var(--gold-soft), var(--green), var(--gold-soft)); }
.ring img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 5px solid var(--green); }

/* Stats */
.stats { background: var(--green-darker); color: var(--white); padding: 26px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; text-align: center; }
.stats strong { display: block; font-family: var(--font-head); font-size: 1.4rem; color: var(--gold-soft); }
.stats span { font-size: 0.76rem; color: rgba(255,255,255,0.72); }

.section { padding: 74px 0; }
.section-label { color: var(--green); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.75rem; margin-bottom: 8px; }
.section-label.light { color: var(--gold); }
.section h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); }
.section-lead { color: var(--ink-soft); max-width: 80ch; }

/* About */
.about-grid { display: grid; grid-template-columns: 1.25fr 0.9fr; gap: 44px; align-items: start; }
.about-grid > div:first-child p { color: var(--ink-soft); }
.skill-card { background: var(--white); border-radius: 16px; padding: 26px; box-shadow: var(--shadow); border-top: 4px solid var(--gold); }
.skill-card h3 { font-size: 1rem; margin-bottom: 14px; }
.edu-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.edu-list li { display: flex; gap: 14px; }
.edu-list .yr { flex-shrink: 0; width: 84px; color: var(--green); font-weight: 700; font-size: 0.8rem; font-family: var(--font-head); }
.edu-list strong { display: block; font-size: 0.94rem; font-weight: 600; font-family: var(--font-body); }
.edu-list span { color: var(--ink-soft); font-size: 0.84rem; }

/* Timeline */
.experience { background: var(--green); color: var(--white); }
.experience h2 { color: var(--white); }
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: rgba(255,255,255,0.15); }
.timeline li { position: relative; padding: 0 0 32px 34px; }
.timeline li::before { content: ''; position: absolute; left: 0; top: 5px; width: 14px; height: 14px; border-radius: 50%; background: var(--green); border: 3px solid var(--gold); }
.timeline li:last-child { padding-bottom: 0; }
.period { display: inline-block; background: rgba(201,162,39,0.18); color: var(--gold-soft); font-size: 0.74rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; margin-bottom: 8px; }
.timeline h3 { font-size: 1.05rem; margin-bottom: 2px; color: var(--white); }
.org { color: var(--gold-soft); font-weight: 600; font-size: 0.88rem; margin: 0 0 8px; font-family: var(--font-body); }
.timeline p:not(.org) { color: rgba(255,255,255,0.78); font-size: 0.9rem; margin: 0; max-width: 70ch; }

/* Grants table */
.table-wrap { overflow-x: auto; background: var(--white); border-radius: 14px; box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
thead th { text-align: left; background: var(--green); color: var(--white); padding: 12px 16px; font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
tbody td { padding: 12px 16px; border-bottom: 1px solid var(--line); color: var(--ink-soft); vertical-align: top; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(even) { background: rgba(28,61,46,0.03); }

/* Publications */
.publications { background: var(--green-darker); color: var(--white); }
.publications h2 { color: var(--white); }
.pub-tabs details { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; padding: 14px 20px; margin-bottom: 14px; }
.pub-tabs summary { cursor: pointer; font-family: var(--font-head); font-size: 1.05rem; color: var(--gold-soft); font-weight: 700; display: flex; align-items: center; gap: 10px; }
.pub-tabs summary .count { background: rgba(201,162,39,0.2); color: var(--gold-soft); font-size: 0.72rem; font-family: var(--font-body); padding: 2px 9px; border-radius: 999px; }
.pub-list { list-style: decimal; padding-left: 1.3em; margin: 16px 0 4px; display: grid; gap: 12px; }
.pub-list li { color: rgba(255,255,255,0.85); font-size: 0.87rem; line-height: 1.6; }
.pub-list a { color: #7fc9a3; font-size: 0.8rem; }
.pub-list a:hover { text-decoration: underline; }

/* Reviewer */
.reviewer { background: var(--paper); }

/* Contact */
.contact { background: linear-gradient(160deg, var(--green) 0%, var(--green-darker) 100%); color: var(--white); }
.contact h2 { color: var(--white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.contact-grid > div:first-child p { color: rgba(255,255,255,0.82); }
.contact-cards { display: grid; gap: 14px; }
.c-card { display: flex; flex-direction: column; gap: 4px; background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.14); border-radius: 14px; padding: 16px 18px; }
a.c-card:hover { background: rgba(255,255,255,0.14); }
.c-card strong { color: var(--gold-soft); font-family: var(--font-head); font-size: 0.9rem; }
.c-card span { font-size: 0.88rem; color: rgba(255,255,255,0.88); word-break: break-word; }

.footer { background: var(--green-darker); color: rgba(255,255,255,0.6); padding: 22px 0; font-size: 0.85rem; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.footer a { color: var(--gold-soft); }

@media (max-width: 900px) {
  .hero-inner, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-photo { order: -1; }
  .ring { width: 170px; margin: 0 auto; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 720px) {
  .links { position: fixed; top: 0; right: -100%; width: min(78vw,320px); height: 100vh; background: var(--white); flex-direction: column; align-items: flex-start; padding: 90px 28px 28px; gap: 22px; box-shadow: -10px 0 30px rgba(0,0,0,0.15); transition: right 0.3s ease; }
  .links.open { right: 0; }
  .links a { color: var(--ink); }
  .burger { display: flex; }
}