:root{
  --bg:#f6f8fb;
  --paper:#ffffff;
  --ink:#10202d;
  --muted:#586975;
  --line:#d9e1e8;
  --accent:#1b5f84;
  --accent-deep:#113850;
  --soft:#eaf1f6;
  --dark:#0f1f2b;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.68}
img{max-width:100%;display:block}
.container{width:min(1160px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-wrap{height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-weight:800;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.nav{display:flex;gap:24px;align-items:center}
.nav a{color:var(--ink);text-decoration:none;font-size:.95rem;font-weight:600}
.menu-btn{display:none;border:0;background:transparent;font-size:1.5rem;cursor:pointer}
.hero{padding:88px 0 72px;background:linear-gradient(180deg,#fff 0%,#f3f7fa 100%)}
.hero-grid{display:grid;grid-template-columns:1.28fr .72fr;gap:44px;align-items:center}
.eyebrow{margin:0 0 18px;font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:800}
.eyebrow.light{color:#9dc4dc}
h1,h2{font-family:"Playfair Display",serif;letter-spacing:-.03em}
.hero h1{font-size:clamp(2.9rem,5.8vw,5rem);line-height:1.03;margin:0 0 22px;max-width:840px}
.lead{font-size:1.13rem;color:#475864;max-width:760px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-tags span,.software-pill{display:inline-flex;align-items:center;padding:10px 14px;border-radius:999px;background:var(--soft);color:var(--accent-deep);font-weight:600;font-size:.92rem}
.profile-panel{background:var(--paper);border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 18px 46px rgba(16,32,45,.08)}
.profile-photo{width:100%;aspect-ratio:1/1;object-fit:cover;background:#cdd5dc}
.profile-info{padding:24px}
.small-label{margin:0 0 8px;font-size:.74rem;letter-spacing:.14em;font-weight:800;color:var(--accent);text-transform:uppercase}
.profile-info h2{font-size:2rem;margin:0 0 6px}
.credentials{margin:0 0 14px;color:#4a5a65;font-weight:600}
.profile-note{margin:0;color:var(--muted)}
.section{padding:84px 0}
.section.muted{background:var(--bg)}
.split{display:grid;grid-template-columns:.82fr 1.18fr;gap:68px;align-items:start}
.gap-large{gap:78px}
.section h2{font-size:clamp(2.1rem,4vw,3.4rem);line-height:1.1;margin:0}
.prose{color:#44535f;font-size:1.03rem}
.prose p{margin:0 0 18px}
.cards{display:grid;gap:20px;margin-top:38px}
.cards.four{grid-template-columns:repeat(4,1fr)}
.card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 8px 24px rgba(16,32,45,.03)}
.card h3{margin:10px 0 10px;font-size:1.12rem}
.card p{margin:0;color:var(--muted);font-size:.95rem}
.icon{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:var(--soft);color:var(--accent-deep);font-weight:800}
.dark{background:var(--dark);color:white}
.light-text{color:#c6d3dc}
.software-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.software-pill{justify-content:center;background:rgba(255,255,255,.08);color:white;border:1px solid rgba(255,255,255,.12)}
.expertise-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start;margin-top:22px}
.expertise-box{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:24px}
.expertise-box h3{margin-top:0;font-size:1.08rem}
.expertise-box ul{margin:12px 0 0 0;padding-left:20px;color:var(--muted)}
.expertise-box li{margin-bottom:10px}
.footer{padding:28px 0;border-top:1px solid var(--line);background:#fff}
.footer-wrap{display:flex;justify-content:space-between;gap:24px;align-items:center}
.footer-wrap p{margin:6px 0 0;color:#70808b;font-size:.95rem}
.footer-note{color:#70808b;font-size:.92rem}
@media (max-width:980px){
  .hero-grid,.split,.expertise-layout{grid-template-columns:1fr}
  .cards.four,.software-grid{grid-template-columns:1fr 1fr}
  .nav{display:none;position:absolute;top:74px;left:0;right:0;background:white;padding:20px 24px;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start}
  .nav.open{display:flex}
  .menu-btn{display:block}
}
@media (max-width:620px){
  .container{width:min(100% - 28px,1160px)}
  .hero{padding-top:64px}
  .hero h1{font-size:2.55rem}
  .section{padding:68px 0}
  .cards.four,.software-grid{grid-template-columns:1fr}
  .footer-wrap{flex-direction:column;align-items:flex-start}
}


/* Selected Projects */
.projects-section{background:#fff}
.projects-heading{display:grid;grid-template-columns:1fr .85fr;gap:56px;align-items:end;margin-bottom:36px}
.section-note{margin:0;color:var(--muted);font-size:1rem}
.project-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.project-card{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--paper);box-shadow:0 12px 30px rgba(16,32,45,.05)}
.featured-project{grid-column:1 / -1;display:grid;grid-template-columns:1.08fr .92fr}
.project-image{min-height:280px;position:relative}
.project-image.compact{min-height:230px}
.placeholder-photo{background:linear-gradient(135deg,#dbe7ee 0%,#adc5d3 48%,#7196aa 100%);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#17384a;text-align:center}
.placeholder-photo:before{content:"";position:absolute;inset:18px;border:1px dashed rgba(17,56,80,.35);border-radius:12px}
.photo-label{font-family:"Playfair Display",serif;font-size:1.45rem;font-weight:700;z-index:1}
.photo-file{margin-top:7px;font-size:.82rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;opacity:.72;z-index:1}
.project-content{padding:26px}
.featured-project .project-content{padding:34px}
.project-meta{font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:800;margin-bottom:9px}
.project-card h3{font-family:"Playfair Display",serif;font-size:1.65rem;line-height:1.16;margin:0 0 13px;letter-spacing:-.02em}
.featured-project h3{font-size:2rem}
.project-card p{margin:0;color:var(--muted);font-size:.96rem}
.project-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.project-tags span{padding:6px 9px;border-radius:999px;background:var(--soft);color:var(--accent-deep);font-size:.76rem;font-weight:700}
.project-note{margin-top:28px;padding:16px 18px;background:var(--bg);border-left:3px solid var(--accent);color:#53636f;font-size:.92rem}
.project-note code{background:#e7edf1;padding:2px 5px;border-radius:4px}
@media(max-width:980px){.projects-heading,.featured-project{grid-template-columns:1fr}.project-grid{grid-template-columns:1fr}.featured-project{grid-column:auto}}

.publications-section{background:#f8fafc}
.publications-heading{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:end;margin-bottom:34px}
.section-note{margin:0;color:var(--muted);font-size:1rem}
.publication-list{display:grid;gap:22px}
.publication-card{display:grid;grid-template-columns:74px 1fr;gap:26px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:0 10px 28px rgba(16,32,45,.04)}
.publication-number{width:56px;height:56px;border-radius:16px;background:var(--soft);color:var(--accent-deep);display:grid;place-items:center;font-weight:800;font-size:1.05rem}
.publication-meta{font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:800;margin-bottom:10px}
.publication-content h3{font-size:1.45rem;line-height:1.25;margin:0 0 8px}
.authors{margin:0 0 14px;color:#50606c}
.publication-content>p:not(.authors){color:var(--muted);margin:0 0 16px}
.publication-tags{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 18px}
.publication-tags span{background:var(--soft);color:var(--accent-deep);padding:7px 10px;border-radius:999px;font-size:.82rem;font-weight:600}
.publication-link{display:inline-block;color:var(--accent-deep);text-decoration:none;font-weight:800}
.publication-link:hover{text-decoration:underline}
@media(max-width:980px){.publications-heading{grid-template-columns:1fr}.publication-card{grid-template-columns:1fr}.publication-number{width:48px;height:48px}}


/* Education */
.education-section{background:#fff}
.education-heading{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:end;margin-bottom:34px}
.education-list{display:grid;gap:18px}
.education-card{display:grid;grid-template-columns:150px 1fr;gap:28px;padding:26px 28px;border:1px solid var(--line);border-radius:18px;background:var(--paper);box-shadow:0 9px 24px rgba(16,32,45,.035)}
.education-year{font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:800;padding-top:4px}
.education-content h3{margin:0 0 5px;font-size:1.22rem}
.education-degree{margin:0 0 10px;color:var(--accent-deep);font-weight:700}
.education-content>p:last-child{margin:0;color:var(--muted)}
@media(max-width:980px){.education-heading{grid-template-columns:1fr}.education-card{grid-template-columns:1fr;gap:8px}}