@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");:root{--bg-color: #f2f2f7;--text-color: #222;--box-bg: #fff;--border-color: #ccc;--hero-bg: #fff;--h1-color: #2a4b8d;--link-color: #2a4b8d;--visited-color: #6f5499;--hover-color: #1e3a6d;--active-color: #d1495b}@media (prefers-color-scheme: dark){:root{--bg-color: #121212;--text-color: #f0f0f0;--box-bg: #1e1e1e;--border-color: #444;--hero-bg: #222;--h1-color: #9CDCFE;--link-color: #9CDCFE;--visited-color: #6f5499;--hover-color: #1e3a6d;--active-color: #d1495b}}body{font-family:'Inter', 'Hiragino Sans', 'Yu Gothic UI', sans-serif;line-height:1.7;max-width:800px;margin:auto;padding:2em;background-color:var(--bg-color);color:var(--text-color);position:relative}body h1,body h2,body h3{font-size:2em;color:var(--h1-color);margin-bottom:0.2em;font-weight:600;letter-spacing:-0.025em}.lang-switch{position:fixed;top:1em;right:1em;background:var(--bg-color);padding:0.5em 1em;border:1px solid var(--border-color);border-radius:6px;box-shadow:0 2px 5px rgba(0,0,0,0.1);z-index:1000}.lang-switch select{font-size:1em;padding:0.2em;border-radius:4px;border:1px solid #ccc}.lang-ja{display:block}.lang-en{display:none !important}.hero{margin-top:80px;text-align:center;padding:3em 1em;background-color:var(--hero-bg);border-radius:10px;transition:background-color 0.3s}.hero h1{font-size:2em;color:var(--h1-color)}.profile-image{display:block;margin:2em auto 0;max-width:600px;width:100%;height:auto;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,0.15)}.profile-box{background-color:var(--hero-bg);padding:2em;margin:3em auto;border-radius:12px;box-shadow:0 4px 10px rgba(0,0,0,0.08);max-width:800px}.profile-box h1{margin-top:0;color:var(--h1-color)}.profile-box p,.profile-box ul{line-height:1.6;margin:0.5em 0}.profile-box strong{font-weight:bold}.profile-box a{color:var(--link-color)}.timeline{list-style:none;padding-left:0;margin:2em 0}.timeline li{display:flex;flex-wrap:wrap;align-items:baseline;margin-bottom:0.8em}.timeline li .date{min-width:240px;font-weight:bold;white-space:nowrap}.timeline li .desc{flex:1}.menu-btn{position:fixed;top:1rem;left:1rem;z-index:1001;font-size:1.5rem;background:transparent;border:none;cursor:pointer;color:var(--text-color)}#sidebar{position:fixed;top:0;left:-260px;width:260px;height:100%;padding:3em 1rem 0 1rem;background:var(--box-bg);color:var(--text-color);box-shadow:2px 0 8px rgba(0,0,0,0.2);transition:left 0.3s ease;z-index:1000;overflow-y:auto}#sidebar.open{left:0}#sidebar ul{list-style:none;margin:0;padding:0}#sidebar ul>li{margin:0.75rem 0}#sidebar a{display:block;padding:0.5rem 0;color:inherit;text-decoration:none}#sidebar details{margin:0.75rem 0;padding:0}#sidebar details summary{display:list-item;cursor:pointer;padding:0.5rem 0}#sidebar details ul{list-style:none;margin:0.5rem 0;padding-left:1.5rem}#sidebar details ul li{margin:0.5rem 0}.cv{background-color:var(--hero-bg);padding:2em;margin:3em auto;border-radius:12px;box-shadow:0 4px 10px rgba(0,0,0,0.08);max-width:800px}@media (max-width: 600px){.timeline li{display:block}.timeline li .date,.timeline li .desc{display:block;width:auto;margin-bottom:0.4em}}.mermaid svg{background-color:#ffffff !important}.dark-mermaid .mermaid svg{background-color:#1e1e1e !important}.lang-en .desc a{white-space:nowrap}.lang-en .desc a::after{content:"\2060"}