:root{--bg-color: #ffffff;--text-color: #1a1a1a;--secondary-text: #666666;--border-color: #e0e0e0;--accent-color: #0066cc;--link-color: #0066cc;--link-hover-color: #004499;--hover-color: #f5f5f5;--section-bg: #f9f9f9;--tag-bg: #e3f2fd;--tag-text: #1565c0}[data-theme=dark]{--bg-color: #1a1a1a;--text-color: #e0e0e0;--secondary-text: #a0a0a0;--border-color: #333333;--accent-color: #4da6ff;--link-color: #66b3ff;--link-hover-color: #99ccff;--hover-color: #2a2a2a;--section-bg: #262626;--tag-bg: #1e3a5f;--tag-text: #81c7ff}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Noto Sans JP,sans-serif;line-height:1.6;color:var(--text-color);background-color:var(--bg-color);transition:background-color .3s ease,color .3s ease}a{color:var(--link-color);text-decoration:none;transition:color .3s ease}a:hover{color:var(--link-hover-color);text-decoration:underline}.theme-toggle{position:fixed;top:20px;right:20px;z-index:1000}#theme-btn{background:var(--section-bg);border:1px solid var(--border-color);border-radius:50%;width:50px;height:50px;font-size:20px;cursor:pointer;transition:all .3s ease}#theme-btn:hover{background:var(--hover-color);transform:scale(1.05)}.container{max-width:900px;margin:0 auto;padding:20px}.header{text-align:center;margin-bottom:40px;padding:40px 0;border-bottom:2px solid var(--border-color)}.header h1{font-size:2.5rem;font-weight:700;margin-bottom:10px}.update-date{color:var(--secondary-text);font-size:1rem}section{margin-bottom:40px;background:var(--section-bg);padding:30px;border-radius:8px;border:1px solid var(--border-color)}h2{font-size:1.8rem;font-weight:600;margin-bottom:20px;color:var(--accent-color);border-bottom:2px solid var(--accent-color);padding-bottom:8px}h3{font-size:1.4rem;font-weight:500;margin-bottom:15px;color:var(--text-color)}h4{font-size:1.2rem;font-weight:500;margin-bottom:10px;color:var(--accent-color)}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:15px}.info-item{display:flex;justify-content:space-between;align-items:center;padding:10px;background:var(--bg-color);border-radius:4px;border:1px solid var(--border-color)}.info-item strong{font-weight:600;min-width:80px}.info-item a{color:var(--link-color);text-decoration:none}.info-item a:hover{color:var(--link-hover-color);text-decoration:underline}.career-list{display:flex;flex-direction:column;gap:20px}.career-item{padding:20px;background:var(--bg-color);border-radius:6px;border:1px solid var(--border-color)}.period{font-weight:600;color:var(--accent-color);margin-bottom:5px}.company{font-size:1.2rem;font-weight:500;margin-bottom:10px}.career-details{margin-left:20px}.career-details li{margin-bottom:5px;color:var(--secondary-text)}.skill-category{margin-bottom:30px;padding:20px;background:var(--bg-color);border-radius:6px;border:1px solid var(--border-color)}.skill-category p{margin-bottom:15px;color:var(--secondary-text)}.tech-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.tech-tag{background:var(--tag-bg);color:var(--tag-text);padding:4px 12px;border-radius:16px;font-size:.85rem;font-weight:500;border:1px solid var(--tag-text)}.strengths ul,.others ul{margin-left:20px}.strengths li,.others li{margin-bottom:10px;color:var(--secondary-text)}.experience-block{margin-bottom:40px;padding:25px;background:var(--bg-color);border-radius:6px;border:1px solid var(--border-color)}.project{margin-bottom:25px;padding:20px;background:var(--section-bg);border-radius:4px;border-left:4px solid var(--accent-color)}.project ul{margin:15px 0 15px 20px}.project li{margin-bottom:8px;color:var(--secondary-text)}@media (max-width: 768px){.container{padding:15px}.header h1{font-size:2rem}section{padding:20px}.info-grid{grid-template-columns:1fr}.info-item{flex-direction:column;align-items:flex-start;gap:5px}.theme-toggle{top:15px;right:15px}#theme-btn{width:45px;height:45px;font-size:18px}}.network-diagram{margin-bottom:2rem}.network-diagram .mermaid{background-color:var(--bg-color);padding:1rem;border-radius:8px;margin-top:1rem}.network-diagram .fa,.network-diagram .fas{margin-right:5px}.oss-contributions .contribution-block{margin-bottom:30px;padding:20px;background:var(--bg-color);border-radius:6px;border:1px solid var(--border-color)}.oss-contributions .contribution-block p{margin-bottom:15px;color:var(--secondary-text)}.oss-contributions .contribution-block ul{margin:15px 0 15px 20px;list-style-type:disc}.oss-contributions .contribution-block li{margin-bottom:12px;color:var(--secondary-text);line-height:1.6}.oss-contributions .contribution-block li strong{color:var(--text-color);display:block;margin-bottom:4px}.oss-contributions .contribution-block li a{color:var(--link-color);font-weight:500}@media print{.theme-toggle{display:none}body{background:#fff;color:#000}section{background:#fff;border:1px solid #ccc;break-inside:avoid}}