:root{--bg: #ffffff;--bg-subtle: #f6f8fa;--surface: #ffffff;--border: #d0d7de;--border-muted: #eaeef2;--accent: #0969da;--accent-hover: #0550ae;--accent-light: #dbeafe;--accent-muted: #f0f6ff;--text-primary: #1f2328;--text-secondary: #444c56;--text-muted: #6e7781;--green: #1a7f37;--green-bg: #dafbe1;--shadow-xs: 0 1px 2px rgba(31, 35, 40, 0.07);--shadow-sm: 0 2px 6px rgba(31, 35, 40, 0.08), 0 1px 2px rgba(31, 35, 40, 0.04);--shadow-md: 0 5px 14px rgba(31, 35, 40, 0.1), 0 2px 4px rgba(31, 35, 40, 0.05);--radius-sm: 6px;--radius: 10px;--radius-lg: 14px;--radius-full: 9999px;--nav-height: 64px;--container-max: 860px;--ease: 0.18s ease}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}body{font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;font-size:1rem;line-height:1.7;color:var(--text-primary);background:var(--bg);min-height:100vh;display:flex;flex-direction:column}::selection{background:var(--accent-light);color:var(--accent-hover)}a{color:var(--accent);text-decoration:none;transition:color var(--ease)}a:hover{color:var(--accent-hover);text-decoration:underline}h1,h2,h3,h4{font-weight:600;line-height:1.3;color:var(--text-primary);margin-bottom:0.5em}h1{font-size:1.75rem;letter-spacing:-0.02em}h2{font-size:1.2rem;margin-top:2.25rem;padding-bottom:0.4rem;border-bottom:1px solid var(--border-muted)}h3{font-size:1.05rem;margin-top:1.5rem;color:var(--text-secondary)}h4{font-size:1rem;color:var(--text-secondary)}p{margin-bottom:1rem;color:var(--text-secondary)}ul,ol{padding-left:1.4rem;color:var(--text-secondary)}li{margin-bottom:0.3rem}hr{border:none;border-top:1px solid var(--border-muted);margin:2rem 0}strong{font-weight:600;color:var(--text-primary)}.site-hero{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border-muted);transition:box-shadow var(--ease)}.site-hero.scrolled{box-shadow:var(--shadow-sm)}.site-hero-inner{max-width:var(--container-max);margin:0 auto;padding:1.4rem 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1.75rem}.hero-photo-link{display:block;flex-shrink:0;border-radius:var(--radius-full);transition:transform var(--ease)}.hero-photo-link:hover{transform:scale(1.03)}.hero-photo{width:114px;height:114px;border-radius:var(--radius-full);object-fit:cover;object-position:center top;border:3px solid var(--border);box-shadow:var(--shadow-md);align-self:center;display:block}.hero-content{flex:1;min-width:0;align-self:center}.hero-name{font-size:clamp(1.2rem, 3.2vw, 1.6rem);font-weight:700;letter-spacing:-0.02em;color:var(--text-primary);margin:0 0 0.25rem;white-space:nowrap}.hero-name a{color:inherit !important;text-decoration:none !important}.hero-name a:hover{color:inherit !important;text-decoration:none !important}.hero-title{font-size:clamp(0.85rem, 2vw, 1rem);font-weight:600;color:var(--accent);margin:0 0 0.2rem;white-space:nowrap}.hero-tagline{font-size:0.95rem;color:var(--text-muted);margin:0;line-height:1.5}.hero-nav{flex-shrink:0;align-self:center;margin-left:auto}.nav-links{display:flex;list-style:none;gap:0.15rem;align-items:center;flex-shrink:0}.nav-link{display:inline-block;padding:0.38rem 0.75rem;font-size:1.08rem;font-weight:500;color:var(--text-secondary) !important;text-decoration:none !important;border-radius:var(--radius-sm);transition:background var(--ease),color var(--ease)}.nav-link:hover{color:var(--text-primary) !important;background:var(--bg-subtle);text-decoration:none !important}.nav-link.active{color:var(--accent) !important;background:var(--accent-muted);font-weight:600}@media (max-width: 640px){html{font-size:15.36px}.site-hero-inner{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:1rem;row-gap:0.75rem;align-items:center;padding:1rem 1.2rem}.hero-photo-link{grid-column:1;grid-row:1}.hero-content{grid-column:2;grid-row:1}.hero-nav{grid-column:1 / span 2;grid-row:2;width:100%}.nav-links{display:flex !important;flex-direction:row !important;justify-content:space-between;gap:0.35rem;padding:0;margin:0;list-style:none;width:100%}.nav-links li{flex:1;margin:0}.nav-link{display:block;width:100%;text-align:center;padding:0.45rem 0.5rem;font-size:13.6px;font-weight:500;border-radius:var(--radius-sm);border:1px solid var(--border-muted);background:var(--bg);color:var(--text-secondary) !important;transition:all var(--ease)}.nav-link:hover{background:var(--bg-subtle);border-color:var(--border);color:var(--text-primary) !important}.nav-link.active{background:var(--accent-muted) !important;border-color:var(--accent-light) !important;color:var(--accent) !important;font-weight:600}.hero-photo{width:68px;height:68px}.hero-name{font-size:clamp(16px, 5.2vw, 26px);white-space:nowrap}.hero-title{font-size:clamp(12px, 3.8vw, 18px);white-space:nowrap}.hero-tagline{display:none}.focus-card-title,.project-card-title,.timeline-entry h4{font-size:18px}.focus-card p,.project-card-desc,.timeline-entry p{font-size:16.2px}.timeline-entry .meta{font-size:14.4px}.contact-card label{font-size:16.2px}.contact-card input,.contact-card textarea{font-size:16.8px}}.main-container{flex:1;max-width:var(--container-max);width:100%;margin:0 auto;padding:2.5rem 1.5rem 4rem}.main-container>*:first-child{margin-top:0 !important}.focus-grid{display:grid;grid-template-columns:1fr 1fr;gap:0.9rem;margin:1.5rem 0}.focus-card{background:var(--bg-subtle);border:1px solid var(--border-muted);border-radius:var(--radius);padding:1.1rem 1.2rem;transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease)}.focus-card:hover{box-shadow:var(--shadow-sm);border-color:var(--border);transform:translateY(-2px)}.focus-card-title{font-size:1rem;font-weight:700;color:var(--accent);margin-bottom:0.4rem;display:flex;align-items:center;gap:0.4rem}.focus-card p{font-size:0.9rem;color:var(--text-muted);margin:0;line-height:1.55}@media (max-width: 560px){.focus-grid{grid-template-columns:1fr}}.cert-list{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:0.5rem;margin:1rem 0}.cert-badge{display:inline-flex;align-items:center;gap:0.3rem;padding:0.3rem 0.75rem;background:var(--accent-muted);color:var(--accent);font-size:0.8rem;font-weight:600;border-radius:var(--radius-full);border:1px solid var(--accent-light)}table{width:100%;border-collapse:collapse;margin:1.25rem 0;font-size:1rem}thead th{background:var(--bg-subtle);color:var(--text-primary);font-weight:600;padding:0.7rem 1rem;text-align:left;border-bottom:2px solid var(--border)}tbody td{padding:0.65rem 1rem;border-bottom:1px solid var(--border-muted);color:var(--text-secondary);vertical-align:top}tbody tr:last-child td{border-bottom:none}tbody tr:hover td{background:var(--bg-subtle)}.contact-card{background:var(--bg-subtle);border:1px solid var(--border-muted);border-radius:var(--radius);padding:1.8rem 2rem;max-width:600px;margin-top:1.5rem}.contact-form{display:flex;flex-direction:column;gap:1.2rem}.form-group{display:flex;flex-direction:column;gap:0.35rem}.form-group label{font-size:0.95rem;font-weight:600;color:var(--text-primary)}.form-group input,.form-group textarea{padding:0.65rem 0.9rem;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:1rem;font-family:inherit;color:var(--text-primary);background:var(--surface);transition:border-color var(--ease),box-shadow var(--ease);width:100%}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(9,105,218,0.12)}.form-group textarea{resize:vertical;min-height:130px}.btn{display:inline-flex;align-items:center;justify-content:center;font-family:inherit;font-size:1rem;font-weight:600;padding:0.65rem 1.4rem;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:background-color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);text-decoration:none}.btn-primary{background:var(--accent);color:#ffffff !important}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn-primary:active{transform:translateY(0)}.btn-primary:focus{outline:none;box-shadow:0 0 0 3px rgba(9,105,218,0.3)}.project-card-list{list-style:none;padding:0;margin:1.5rem 0}.project-card{list-style:none;background:var(--bg-subtle);border:1px solid var(--border-muted);border-radius:var(--radius);padding:1.2rem 1.4rem;margin-bottom:1rem;transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease)}.project-card:hover{box-shadow:var(--shadow-sm);border-color:var(--border);transform:translateY(-2px)}.project-card-title{font-size:1.05rem;font-weight:600;display:block;margin-bottom:0.35rem}.project-card-title a{color:var(--accent) !important;text-decoration:none !important}.project-card-title a:hover{text-decoration:underline !important}.project-card-desc{font-size:1rem;color:var(--text-muted);margin:0.35rem 0 0;line-height:1.55}.project-card-topics{margin:0.6rem 0;display:flex;flex-wrap:wrap;gap:0.4rem}.project-card-tag{display:inline-flex;align-items:center;padding:0.2rem 0.6rem;background:var(--accent-muted);color:var(--accent);font-size:0.75rem;font-weight:600;border-radius:var(--radius-full);border:1px solid var(--accent-light);line-height:1}.project-card-meta{font-size:0.85rem;color:var(--text-muted);display:block;margin-top:0.65rem}.site-footer{background:var(--bg-subtle);border-top:1px solid var(--border-muted);padding:2rem 1.5rem;margin-top:auto}.footer-inner{max-width:var(--container-max);margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:1rem}.footer-social{display:flex;gap:0.65rem;flex-wrap:wrap;justify-content:center}.social-link{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);color:var(--text-muted) !important;background:var(--surface);border:1px solid var(--border-muted);transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease);text-decoration:none !important}.social-link:hover{color:var(--accent) !important;background:var(--accent-muted);border-color:var(--accent-light);transform:translateY(-2px);text-decoration:none !important}.footer-copy{font-size:0.8rem;color:var(--text-muted);margin:0;text-align:center}.section-label{font-size:0.72rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:1rem}.timeline-entry{padding:1.2rem 1.4rem;border-left:3px solid var(--accent-light);background:var(--bg-subtle);border-radius:0 var(--radius) var(--radius) 0;margin-bottom:1rem}.timeline-entry h4{color:var(--text-primary);margin:0 0 0.2rem;font-size:1.05rem}.timeline-entry .meta{font-size:0.875rem;color:var(--text-muted);margin-bottom:0.5rem}.timeline-entry p{font-size:1rem;margin:0;line-height:1.65}