* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        @font-face {
          font-display: swap;
          font-family: 'GeistSans';
          font-style: normal;
          font-weight: 100 900;
          src: url('//webm.lol/fonts/GeistSans-Variable.woff2') format('woff2');
        }
        
        @font-face {
          font-display: swap;
          font-family: 'Geist Mono';
          font-style: normal;
          font-weight: 100 900;
          src: url('//webm.lol/fonts/GeistMono-Variable.woff2') format('woff2');
        }
        
        html, body {
            font-family: 'GeistSans', sans-serif;
            font-size: 15px;
            background: #ffffff;
            color: #1a1a1a;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            height: 100%;
        }
        
        html.dark-mode, html.dark-mode body {
            background: #0a0a0a;
            color: #e0e0e0;
        }
        
        html.green-mode, html.green-mode body {
            background: #3e4637;
            color: #ffffff;
        }
        
        .layout {
            display: flex;
            min-height: 100vh;
        }
        
        .sidebar {
            width: 280px;
            padding: 60px 32px;
            border-right: 1px solid #e0e0e0;
            position: fixed;
            height: 100vh;
            overflow-y: hidden;
        }
        
        html.dark-mode .sidebar {
            border-right-color: #2a2a2a;
        }
        
        html.green-mode .sidebar {
            border-right-color: rgba(255, 255, 255, 0.3);
            background: #4c5844;
        }
        
        .sidebar-header {
            margin-bottom: 48px;
        }
        
        .logo {
            font-size: 18px;
            font-weight: 600;
            color: #1a1a1a;
            text-decoration: none;
            display: block;
        }
        
        .logo pre {
            font-family: monospace;
            font-size: 8px;
            line-height: 1;
            letter-spacing: 0;
            margin: 0;
            margin-bottom: -20px;
        }
        
        html.dark-mode .logo { color: #e0e0e0; }
        html.green-mode .logo { color: #ffffff; }
        
        .nav-section {
            margin-bottom: 32px;
        }
        
        .nav-section-title {
            font-size: 12px;
            font-weight: 500;
            color: #999;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        
        html.dark-mode .nav-section-title { color: #666; }
        html.green-mode .nav-section-title { color: #ffffff; }
        
        .nav-links {
            list-style: none;
        }
        
        .nav-links li {
            margin-bottom: 4px;
        }
        
        .nav-links a {
            display: block;
            padding: 6px 12px;
            color: #666;
            text-decoration: none;
            border-radius: 6px;
            transition: all 0.2s ease;
            font-size: 14px;
        }
        
        .nav-links a:hover {
            background: #f5f5f5;
            color: #1a1a1a;
        }
        
        .nav-links a.active {
            background: #f5f5f5;
            color: #1a1a1a;
            font-weight: 500;
        }
        
        html.dark-mode .nav-links a { color: #999; }
        html.dark-mode .nav-links a:hover { background: #2a2a2a; color: #e0e0e0; }
        html.dark-mode .nav-links a.active { background: #2a2a2a; color: #e0e0e0; }
        
        html.green-mode .nav-links a { color: #ffffff; }
        html.green-mode .nav-links a:hover { background: rgba(255, 255, 255, 0.0); color: #ffffff; }
        html.green-mode .nav-links a.active { background: #3e463700; color: #c4b550; }
        
        body.menu-open {
            overflow: hidden;
        }

        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: #ffffff;
            border-bottom: 1px solid #e0e0e0;
            z-index: 10001;
            align-items: center;
            justify-content: space-between;
            padding: 0 12px;
        }
        
        html.dark-mode .mobile-header {
            background: #1a1a1a;
            border-bottom-color: #2a2a2a;
        }
        
        html.green-mode .mobile-header {
            background: #4c5844;
            border-bottom-color: rgba(255, 255, 255, 0.2);
        }
        
        .hamburger {
    width: 44px;
    height: 44px;
    background: transparent !important;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    position: relative;
    color: #1a1a1a;
    transition: background 0.2s ease;
}
 
.hamburger:hover {
    background: #f5f5f5 !important;
}
 
html.dark-mode .hamburger { background: transparent !important; color: #e0e0e0; }
html.dark-mode .hamburger:hover { background: #2a2a2a !important; }
html.green-mode .hamburger { background: transparent !important; color: #ffffff; }
html.green-mode .hamburger:hover { background: rgba(255, 255, 255, 0.05) !important; }
 
.hamburger svg {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 22px;
    height: 22px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
 
.hamburger .icon-menu {
    transform: rotate(0deg);
    opacity: 1;
}
 
.hamburger .icon-close {
    transform: rotate(-90deg);
    opacity: 0;
}
 
.hamburger.active .icon-menu {
    transform: rotate(90deg);
    opacity: 0;
}
 
.hamburger.active .icon-close {
    transform: rotate(0deg);
    opacity: 1;
}
        
        .mobile-logo {
            font-family: monospace;
            font-size: 14px;
            font-weight: 600;
            color: #1a1a1a;
            text-decoration: none;
        }
        
        html.dark-mode .mobile-logo { color: #e0e0e0; }
        html.green-mode .mobile-logo { color: #ffffff; }
        
        .mobile-nav {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #ffffff;
            z-index: 10000;
            padding: 24px;
            overflow-y: auto;
        }
        
        html.dark-mode .mobile-nav {
            background: #0a0a0a;
        }
        
        html.green-mode .mobile-nav {
            background: #3e4637;
        }
        
        .mobile-nav.active {
            display: block;
        }
        
        .mobile-nav .nav-section {
            margin-bottom: 24px;
        }
        
        .mobile-nav .nav-links a {
            padding: 12px 16px;
            font-size: 16px;
        }
        
        .mobile-theme-btn {
            width: 46px;
            height: 46px;
            background: transparent !important;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
        }
        
        .mobile-theme-btn:hover {
            background: #f5f5f5 !important;
        }
        
        .mobile-theme-btn svg {
            width: 34px;
            height: 34px;
            fill: currentColor;
        }
        
        html.dark-mode .mobile-theme-btn { color: #ffffff; background: transparent !important; }
        html.dark-mode .mobile-theme-btn:hover { background: #2a2a2a !important; }
        html.green-mode .mobile-theme-btn { color: #ffffff; background: transparent !important; }
        html.green-mode .mobile-theme-btn:hover { background: rgba(255, 255, 255, 0.05) !important; }
        
        .theme-toggle-btn {
            position: fixed;
            top: 24px;
            right: 24px;
            width: 52px;
            height: 52px;
            background: transparent;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
            z-index: 10002;
            padding: 0;
        }
        
        .theme-toggle-btn svg {
            display: block;
            fill: currentColor;
            width: 32px;
            height: 32px;
        }
        
        .theme-toggle-btn:hover {
            background: #f5f5f5;
        }
        
        html.dark-mode .theme-toggle-btn { color: white; background: transparent; }
        html.dark-mode .theme-toggle-btn:hover { background: #2a2a2a; }
        
        html.green-mode .theme-toggle-btn { color: #ffffff; background: #3e4637; }
        html.green-mode .theme-toggle-btn:hover { background: #4c5844; }
        
        .theme-dropdown {
            position: fixed;
            top: 84px;
            right: 24px;
            background: white;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            padding: 8px;
            min-width: 140px;
            display: none;
            z-index: 10002;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        
        .theme-dropdown.active {
            display: block;
        }
        
        html.dark-mode .theme-dropdown { background: #111; border-color: #222; }
        html.green-mode .theme-dropdown { background: #4c5844; border-color: #3e4637; }
        
        .theme-option {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            margin: 2px 0;
            background: transparent;
            border: 1px solid transparent;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 14px;
        }
        
        .theme-option:hover { background: #f5f5f5; }
        html.dark-mode .theme-option:hover { background: #333; }
        html.green-mode .theme-option:hover { background: rgba(255, 255, 255, 0.05); }
        
        .theme-option.selected { border-color: #666; }
        
        .theme-circle {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            border: 1px solid #ccc;
            flex-shrink: 0;
        }
        
        .theme-circle.light { background: #ffffff; }
        .theme-circle.dark { background: #1a1a1a; }
        .theme-circle.green { background: #3e4637; }
        
        .theme-name {
            font-size: 14px;
            color: #666;
        }
        
        html.dark-mode .theme-name { color: #999; }
        html.green-mode .theme-name { color: #ffffff; }
        
        .main-content {
            margin-left: 280px;
            flex: 1;
            padding: 60px 80px;
            max-width: 900px;
        }
        
        .intro {
            margin-bottom: 60px;
        }
        
        .intro h1 {
            font-size: 32px;
            font-weight: 600;
            margin-bottom: 16px;
            color: #1a1a1a;
        }
        
        html.dark-mode .intro h1 { color: #e0e0e0; }
        html.green-mode .intro h1 { color: #ffffff; }
        
        .intro p {
            font-size: 16px;
            color: #666;
            margin-bottom: 12px;
        }
        
        html.dark-mode .intro p { color: #999; }
        html.green-mode .intro p { color: #ffffff; }
        
        
        @media (max-width: 900px) {
            .sidebar { display: none; }
            .main-content { margin-left: 0; padding: 24px; padding-top: 84px; }
            .theme-toggle-btn { display: none; }
            .theme-dropdown { 
                top: 60px;
                right: 12px;
            }
            .mobile-header { display: flex; }
        }