:root{--blue:#2563eb;--blue-dark:#4f46e5;--ink:#1a202c;--gray:#4b5563;--gray-light:#6b7280;--border:#e5e7eb;--bg-alt:#f8fafc;--max:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,segoe ui,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.main-nav a:focus-visible,.footer-links a:focus-visible,.cert-card:focus-visible,.activity:focus-visible{outline-color:var(--blue-dark)}.container{max-width:var(--max);margin:0 auto;padding:0 2rem}.container-narrow{max-width:880px}svg{width:1em;height:1em;flex-shrink:0}.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px}.brand{font-weight:700;font-size:1.25rem}.main-nav{display:flex;gap:1.75rem}.main-nav a{color:var(--gray);font-weight:500;transition:color .15s}.main-nav a:hover,.main-nav a.active{color:var(--ink)}.hero{background:linear-gradient(135deg,#eff3ff 0%,#eceefd 100%);padding:4.5rem 0 4rem;text-align:center}.avatar{display:block;width:130px;height:130px;border-radius:50%;margin:0 auto 1.75rem;object-fit:cover}.hero h1{font-size:3rem;font-weight:700;margin:0 0 .5rem}.hero .role{font-size:1.3rem;color:var(--gray);margin:0 0 1.5rem}.hero .bio{max-width:760px;margin:0 auto .85rem;color:var(--gray);font-size:1.05rem}.hero .bio:last-child{margin-bottom:0}.section{padding:3.5rem 0}.section-alt{background:var(--bg-alt)}.section-title{display:flex;align-items:center;gap:.65rem;font-size:1.75rem;font-weight:700;margin:0 0 2rem}.section-title svg{color:var(--blue);font-size:1.6rem}.chips{display:flex;flex-wrap:wrap;gap:.6rem}.chip{background:var(--bg-alt);border:1px solid var(--border);border-radius:999px;padding:.45rem 1.1rem;font-size:.95rem;font-weight:500;color:var(--gray)}.section-alt .chip{background:#fff}.timeline{display:flex;flex-direction:column;gap:1.75rem}.timeline-item{border-left:3px solid var(--blue);padding-left:1.25rem}.timeline-item h3{margin:0 0 .25rem;font-size:1.15rem;font-weight:700}.meta{margin:0 0 .5rem;color:var(--gray);font-size:.95rem}.timeline-item .meta-light{margin:0 0 .5rem}.desc{margin:0;color:var(--gray)}.timeline-item .desc{margin-bottom:.6rem}.timeline-item .desc:last-child{margin-bottom:0}.timeline-item .desc strong,.timeline-item .meta strong{color:var(--ink)}.achievements{margin:0;padding-left:1.4rem;color:var(--gray)}.achievements li{margin-bottom:.35rem}.grid{display:grid;gap:1.5rem}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:1.5rem;box-shadow:0 1px 3px rgba(0,0,0,5%)}.card h3{margin:0 0 .4rem;font-size:1.2rem;font-weight:700}.meta-strong{margin:0 0 .15rem;color:var(--blue)}.meta-light{margin:0 0 .15rem;color:var(--gray-light);font-size:.9rem}.card .desc{margin-top:.65rem}.cert-card{display:block;background:linear-gradient(135deg,#eef4ff 0%,#eaf0fe 100%);border:1px solid #e0e7ff;border-radius:12px;padding:1.5rem;transition:box-shadow .15s,transform .15s}a.cert-card:hover{box-shadow:0 8px 24px rgba(0,0,0,8%);transform:translateY(-2px)}.cert-card h3{margin:0 0 .5rem;font-size:1.1rem;font-weight:700}.activities{display:flex;flex-direction:column;gap:1.25rem}.activity{position:relative}a.activity{display:block;transition:box-shadow .15s,transform .15s}a.activity:hover{box-shadow:0 8px 24px rgba(0,0,0,8%);transform:translateY(-2px)}.activity .period{position:absolute;top:1.5rem;right:1.5rem;color:var(--gray-light);font-size:.85rem}.activity h3{margin:0 0 .35rem;padding-right:5rem}a.cert-card h3::after,a.activity h3::after{content:"";display:inline-block;width:.8em;height:.8em;margin-left:.35em;vertical-align:-.06em;background-color:var(--gray-light);mask:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"/><polyline points="15 3 21 3 21 9"/><line x1="10" y1="14" x2="21" y2="3"/></svg>')center/contain no-repeat;transition:background-color .15s}a.cert-card:hover h3::after,a.activity:hover h3::after{background-color:var(--blue)}.testimonial{background:var(--bg-alt);border:1px solid var(--border);border-radius:12px;padding:1.5rem}.testimonial .quote{margin:0 0 1rem;font-style:italic;color:var(--gray)}.testimonial hr{border:none;border-top:1px solid var(--border);margin:1rem 0}.t-name{margin:0 0 .1rem;font-weight:700;color:var(--ink)}.site-footer{background:linear-gradient(135deg,#2563eb 0%,#4f46e5 100%);color:#fff;padding:3.5rem 0;text-align:center}.site-footer h2{font-size:2rem;font-weight:700;margin:0 0 1.75rem}.footer-links{display:flex;justify-content:center;flex-wrap:wrap;gap:2.5rem}.footer-links a{display:inline-flex;align-items:center;gap:.5rem;font-size:1.05rem;opacity:.95;transition:opacity .15s}.footer-links a:hover{opacity:1}.footer-links svg{font-size:1.2rem}.code-block{border-radius:10px;overflow:hidden;margin:1.5rem 0}.code-lang{background:#1e293b;color:#94a3b8;font-family:ui-monospace,SFMono-Regular,sf mono,Menlo,Consolas,monospace;font-size:.85rem;padding:.55rem 1.25rem}.code-block pre{background:#0f172a;color:#e2e8f0;margin:0;padding:1.25rem;overflow-x:auto;font-family:ui-monospace,SFMono-Regular,sf mono,Menlo,Consolas,monospace;font-size:.9rem;line-height:1.7}.chart-panel{background:var(--bg-alt);border-radius:12px;padding:1.5rem;margin:1.5rem 0}.chart-title{font-weight:600;font-size:1.05rem;margin-bottom:1rem;color:var(--ink)}.chart-wrap{position:relative;height:340px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:860px){.grid-2,.grid-3{grid-template-columns:1fr}.hero h1{font-size:2.25rem}.container{padding:0 1.25rem}}