:root{--bg: #ffffff;--bg-secondary: #f5f5f7;--text: #1d1d1f;--text-secondary: #6e6e73;--text-tertiary: #86868b;--text-hover: #3a3a3c;--accent: #0071e3;--accent-hover: #0077ed;--border: #d2d2d7;--border-light: #e8e8ed;--radius: 18px;--radius-sm: 12px;--font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;--max-width: 980px;--section-gap: 120px;--nav-height: 52px;--sticky-top: 80px;--icon-lg: 40px;--badge-ml-bg: #f0f6ff;--badge-ml-text: #0071e3;--badge-app-bg: #f0fff4;--badge-app-text: #1d7a44;--badge-data-bg: #fff8f0;--badge-data-text: #c45000;--award-bg: #fffbea;--award-text: #b8860b;--gradient-purple: linear-gradient(135deg, #1a1a2e, #3d1a78);--gradient-orange: linear-gradient(135deg, #2d1500, #5c2d00);--gradient-green: linear-gradient(135deg, #0d2818, #1a4731);--gradient-blue: linear-gradient(135deg, #001229, #002855);--gradient-teal: linear-gradient(135deg, #001a1a, #003333);--gradient-gray: linear-gradient(135deg, #1c1c1e, #2c2c2e)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}nav{position:fixed;top:0;left:0;right:0;z-index:100;background:#ffffffd9;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--border-light)}.nav-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;height:52px;display:flex;align-items:center;justify-content:space-between}.nav-logo{font-size:17px;font-weight:600;color:var(--text);letter-spacing:-.3px}.nav-links{display:flex;gap:32px;list-style:none}.nav-links a{font-size:14px;color:var(--text-secondary);transition:color .2s;font-weight:400}.nav-links a:hover{color:var(--text)}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}section{padding:var(--section-gap) 0}.label{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:16px}h1{font-size:clamp(48px,7vw,80px);font-weight:700;letter-spacing:-.025em;line-height:1.05;color:var(--text)}h2{font-size:clamp(32px,4vw,48px);font-weight:700;letter-spacing:-.02em;line-height:1.1;color:var(--text)}h3{font-size:24px;font-weight:600;letter-spacing:-.015em;line-height:1.2;color:var(--text)}p{font-size:17px;line-height:1.6;color:var(--text-secondary)}.lead{font-size:clamp(19px,2.5vw,24px);line-height:1.5;color:var(--text-secondary);max-width:600px}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:980px;font-size:15px;font-weight:500;cursor:pointer;transition:all .2s;border:none;font-family:var(--font)}.btn-primary{background:var(--text);color:#fff}.btn-primary:hover{background:var(--text-hover)}.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-secondary)}.hero{padding-top:140px;padding-bottom:100px}.hero-tag{display:inline-block;font-size:13px;font-weight:500;color:var(--text-tertiary);letter-spacing:.04em;margin-bottom:28px}.hero h1{margin-bottom:24px}.hero-subtitle{font-size:clamp(20px,2.8vw,32px);font-weight:500;color:#6e6e73}.hero .lead{margin-bottom:40px}.hero-cta{display:flex;gap:12px;flex-wrap:wrap}.divider{height:1px;background:var(--border-light);max-width:var(--max-width);margin:0 auto}.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border-light);border:1px solid var(--border-light);border-radius:var(--radius);overflow:hidden;margin-top:56px}.service-card{background:var(--bg);padding:40px 32px}.service-icon{width:var(--icon-lg);height:var(--icon-lg);margin-bottom:20px;color:var(--text)}.service-card h3{font-size:20px;margin-bottom:10px}.service-card p{font-size:15px;color:var(--text-secondary);line-height:1.55}.projects-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px}.projects-header a{font-size:15px;color:var(--accent)}.projects-header a:hover{text-decoration:underline}.projects-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.project-card{background:var(--bg-secondary);border-radius:var(--radius);padding:36px;transition:transform .2s;display:flex;flex-direction:column}.project-card:hover{transform:translateY(-2px)}.project-card.featured{grid-column:span 2;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.project-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;margin-bottom:16px}.badge-ml{background:var(--badge-ml-bg);color:var(--badge-ml-text)}.badge-app{background:var(--badge-app-bg);color:var(--badge-app-text)}.badge-data{background:var(--badge-data-bg);color:var(--badge-data-text)}.project-award{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:500;color:var(--award-text);background:var(--award-bg);padding:3px 10px;border-radius:20px;margin-bottom:8px}.project-card h3{font-size:22px;margin-bottom:8px}.project-card p{font-size:15px;margin-bottom:20px;flex:1}.project-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.tag{font-size:12px;font-weight:500;color:var(--text-secondary);background:var(--border-light);padding:4px 10px;border-radius:20px}.project-link{font-size:14px;font-weight:500;color:var(--accent);display:inline-flex;align-items:center;gap:4px;margin-top:auto}.project-link:hover{text-decoration:underline}.project-visual{aspect-ratio:4/3;border-radius:var(--radius-sm);background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460);display:flex;align-items:center;justify-content:center;color:#ffffff26;font-size:64px}.project-visual.purple{background:var(--gradient-purple)}.project-visual.green{background:var(--gradient-green)}.project-visual.orange{background:var(--gradient-orange)}.project-visual.blue{background:var(--gradient-blue)}.project-visual.teal{background:var(--gradient-teal)}.project-visual.gray{background:var(--gradient-gray)}.status-tag{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text-tertiary);background:var(--border-light);padding:4px 10px;border-radius:20px}.about-strip{background:var(--bg-secondary);padding:80px 0}.about-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.about-text h2{margin-bottom:20px}.about-text p{margin-bottom:24px}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}.stat{text-align:center}.stat-number{font-size:40px;font-weight:700;color:var(--text);letter-spacing:-.03em;line-height:1;margin-bottom:4px}.stat-label{font-size:13px;color:var(--text-tertiary)}.skills-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px}.skill-group h4{font-size:14px;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}.skill-group p{font-size:15px;color:var(--text-secondary);line-height:1.6}.contact-section{text-align:center;padding:var(--section-gap) 0}.contact-section h2{margin-bottom:16px}.contact-section .lead{margin:0 auto 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em{font-style:normal;font-size:12px;opacity:.7;margin-left:6px}@media(max-width:600px){.cert-group{grid-template-columns:1fr}}.education-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:48px}.edu-card{background:var(--bg-secondary);border-radius:var(--radius-sm);padding:28px}.edu-year{font-size:12px;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px}.edu-title{font-size:16px;font-weight:600;color:var(--text);margin-bottom:4px}.edu-school{font-size:14px;color:var(--text-secondary)}.edu-note{font-size:12px;color:var(--accent);font-weight:500;margin-top:4px}.section-sm{padding-top:48px;padding-bottom:var(--section-gap)}.section-mid{padding-top:64px;padding-bottom:var(--section-gap)}.section-sym{padding:64px 0}@media(max-width:768px){:root{--section-gap: 80px}.nav-links{display:none}.services-grid,.projects-grid,.projects-full-grid{grid-template-columns:1fr}.project-card.featured{grid-column:span 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