:root{--bg: #ffffff;--surface: #ffffff;--text: #1a1a1a;--muted: #666666;--primary: #1a1a1a;--primary-700: #000000;--border: #e5e5e5;--hover-bg: #f5f5f5}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--primary);text-decoration:none;transition:color .2s ease}a:hover{color:var(--primary-700)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--border);background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.site-header .container{display:flex;align-items:center;justify-content:space-between;height:64px}.brand{font-weight:600;font-size:18px;letter-spacing:-.02em;color:var(--text)}.nav{display:flex;gap:32px;align-items:center}.nav ul{display:flex;list-style:none;margin:0;padding:0;gap:32px;align-items:center}.nav li{margin:0}.nav a{color:var(--text);font-weight:400;font-size:15px;letter-spacing:-.01em}.nav a:hover{color:var(--muted)}.nav-social{display:flex;gap:20px;list-style:none;margin:0;padding:0}.nav-social a{color:var(--muted);font-size:14px;text-transform:lowercase}.nav-social a:hover{color:var(--text)}.site-footer{border-top:1px solid var(--border);padding:60px 0;margin-top:80px}.site-footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:32px}.footer-nav{display:flex;list-style:none;margin:0;padding:0;gap:32px}.footer-nav a{color:var(--muted);font-size:15px}.footer-nav a:hover{color:var(--text)}.back-to-top{position:fixed;bottom:32px;right:32px;background:var(--text);color:var(--bg);width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;text-decoration:none;font-size:18px;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s,transform .2s;z-index:100;cursor:pointer}.back-to-top.visible{opacity:1;visibility:visible}.back-to-top:hover{transform:translateY(-2px)}.hero-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:80px 0}.hero-card{padding:48px;background:var(--surface);border:1px solid var(--border);transition:all .3s ease;cursor:pointer;text-decoration:none;color:inherit;display:block}.hero-card:hover{background:var(--hover-bg);border-color:var(--text)}.hero-card h1{font-size:48px;font-weight:600;margin:0 0 16px;letter-spacing:-.03em;line-height:1.1}.hero-card p{font-size:16px;color:var(--muted);margin:0;line-height:1.6}.hero-card 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32px;letter-spacing:-.02em;color:var(--text)}.muted{color:var(--muted)}.grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.card{border:1px solid var(--border);background:var(--surface);border-radius:0;padding:32px;transition:background .2s ease}.card:hover{background:var(--hover-bg)}.card h3{margin-top:0;font-size:20px;font-weight:500;letter-spacing:-.01em}.post-list{display:grid;gap:24px}.post-item{border:1px solid var(--border);background:var(--surface);padding:32px;transition:background .2s ease}.post-item:hover{background:var(--hover-bg)}.post-item h2{margin:0 0 8px;font-size:24px;font-weight:500;letter-spacing:-.02em}.post-item .meta{color:var(--muted);font-size:14px}.post-content{border:1px solid var(--border);background:var(--surface);padding:48px;max-width:800px;margin:0 auto}.post-content :is(h1,h2,h3){margin-top:1.5em;margin-bottom:.5em;font-weight:600;letter-spacing:-.02em}.post-content pre{background:var(--hover-bg);padding:16px;border-radius:4px;overflow:auto;border:1px solid var(--border)}.post-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:14px}.portfolio-grid{display:grid;gap:32px;grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}.portfolio-card{border:1px solid var(--border);background:var(--surface);padding:32px;transition:all .2s ease}.portfolio-card:hover{background:var(--hover-bg);transform:translateY(-2px)}.portfolio-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.portfolio-card-header h3{margin:0;font-size:20px;font-weight:500;letter-spacing:-.01em}.badge{display:inline-block;padding:4px 10px;background:var(--text);color:var(--bg);font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.1em}.portfolio-card p{margin:0 0 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4px;font-size:20px;font-weight:500;letter-spacing:-.01em}.company-name{color:var(--text);font-weight:400;margin:0;font-size:16px}.experience-period{color:var(--muted);font-size:14px;white-space:nowrap}.experience-item .muted{margin:0;line-height:1.6}@media (max-width: 768px){.hero-cards{grid-template-columns:1fr;margin:40px 0}.hero-card{padding:32px}.hero-card h1{font-size:36px}.nav ul{gap:20px}.nav-social{display:none}.site-footer .container{flex-direction:column;align-items:flex-start}.work-grid{grid-template-columns:1fr}.container{padding:0 20px}}