:root {
  --bg:#f3f7fb; --panel:#fff; --panel-light:#eef6fb; --text:#102033; --muted:#52657a;
  --accent:#0ea5e9; --accent-dark:#0369a1; --accent-2:#10b981; --border:rgba(15,23,42,.12);
  --shadow:0 18px 48px rgba(15,23,42,.10);
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:radial-gradient(circle at top left,rgba(14,165,233,.18),transparent 30%),radial-gradient(circle at top right,rgba(16,185,129,.14),transparent 30%),var(--bg);color:var(--text)}
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
nav{max-width:1180px;margin:0 auto;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center}
.logo{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:white;font-weight:900}
.nav-links{display:flex;gap:1rem;flex-wrap:wrap}.nav-links a{color:var(--muted);text-decoration:none;font-weight:700}.nav-links a:hover{color:var(--accent-dark)}
main{max-width:1180px;margin:0 auto;padding:0 1.5rem}
.hero{min-height:78vh;display:grid;grid-template-columns:1.5fr .8fr;gap:2rem;align-items:center;padding:5rem 0}
.eyebrow{color:var(--accent-dark);text-transform:uppercase;letter-spacing:.12em;font-weight:800;font-size:.82rem}
h1{font-size:clamp(2.4rem,5.5vw,4.9rem);line-height:1;margin:.75rem 0 1.25rem} h2{font-size:clamp(2rem,4vw,3rem);margin:0} h3{margin:0 0 .75rem;color:var(--text)}
.hero-text,.wide-text,.contact-card p{color:var(--muted);font-size:1.12rem;line-height:1.7}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2rem}.button{border-radius:999px;padding:.9rem 1.25rem;text-decoration:none;font-weight:800;border:1px solid var(--border)}
.button.primary{background:var(--accent);color:white;border-color:var(--accent)}.button.secondary{background:white;color:var(--text)}
.hero-card,.skill-card,.project-card,.info-card,.contact-card,.about-layout{background:rgba(255,255,255,.92);border:1px solid var(--border);border-radius:26px;box-shadow:var(--shadow);padding:1.5rem}
.hero-card ul,.info-card ul{margin:.75rem 0 0;padding-left:1.25rem}.hero-card li,.info-card li{margin:.65rem 0;color:var(--muted);line-height:1.5}
.section{padding:4rem 0}.section-heading{margin-bottom:1.5rem}
.about-layout{display:grid;grid-template-columns:260px 1fr;gap:2rem;align-items:start}
.headshot{width:100%;max-width:260px;aspect-ratio:4/5;object-fit:cover;object-position:center top;border-radius:24px;border:1px solid var(--border);box-shadow:0 14px 30px rgba(15,23,42,.12)}
.wide-text{max-width:900px;margin-top:0}.skills-grid,.project-grid,.cert-grid{display:grid;gap:1.25rem}.skills-grid{grid-template-columns:repeat(4,1fr)}.project-grid{grid-template-columns:repeat(2,1fr)}.cert-grid{grid-template-columns:repeat(2,1fr);align-items:stretch}.info-card{min-height:100%}
.skill-card p,.project-card p{color:var(--muted);line-height:1.6}.tag-row{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}.tag-row span{background:rgba(14,165,233,.10);border:1px solid rgba(14,165,233,.28);color:var(--accent-dark);border-radius:999px;padding:.42rem .7rem;font-size:.82rem;font-weight:700}
.contact-card{max-width:900px}.contact-links{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}.contact-links a{padding:.75rem 1rem;border-radius:14px;background:var(--panel-light);text-decoration:none;border:1px solid var(--border);font-weight:800;color:var(--text)}.contact-links a:hover{border-color:var(--accent);color:var(--accent-dark)}
footer{text-align:center;color:var(--muted);padding:3rem 1rem;border-top:1px solid var(--border);margin-top:3rem}
@media(max-width:900px){.hero,.skills-grid,.project-grid,.cert-grid,.about-layout{grid-template-columns:1fr}.hero{min-height:auto}.headshot{max-width:220px}}