@import"https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700&display=swap";:root{--bg-primary: #f8f9fa;--bg-secondary: #ffffff;--bg-nav: #ffffff;--border-color: #e1e4e8;--text-primary: #24292e;--text-secondary: #586069;--accent-primary: #0969da;--accent-hover: #0550ae;--accent-active: #e8f4ff;--success: #1a7f37;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #e8eef5 100%);--card-shadow: 0 2px 8px rgba(0, 0, 0, .1);--border-radius: 8px}body{margin:0;padding:0;font-family:Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg-gradient);color:var(--text-primary)}*{box-sizing:border-box}a{color:var(--accent-primary);text-decoration:none}a:hover{text-decoration:underline}.app-layout{min-height:100vh;display:flex;flex-direction:column}.app-header{background-color:var(--bg-nav);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:60px}.navbar{flex:1;display:flex;align-items:center;gap:40px}.navbar-container{display:flex;align-items:center;gap:40px;height:60px}.navbar-brand{font-size:18px;font-weight:600;color:var(--text-primary);white-space:nowrap}.navbar-menu{display:flex;gap:4px;flex:1;overflow-x:auto}.nav-link{padding:8px 16px;color:var(--text-secondary);font-size:14px;font-weight:500;border-radius:6px;transition:all .15s ease;white-space:nowrap;text-decoration:none}.nav-link:hover{background-color:var(--bg-primary);color:var(--text-primary);text-decoration:none}.nav-link.active{background-color:var(--accent-active);color:var(--accent-primary);font-weight:600}.main-content{flex:1;width:100%;padding:20px}.app-footer{background-color:var(--bg-nav);border-top:1px solid var(--border-color);padding:12px 20px;text-align:center;font-size:12px;color:var(--text-secondary)}