:root {
            --primary: #1e40af;
            --secondary: #f59e0b;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #6b7280;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--dark);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            background: linear-gradient(90deg, var(--secondary), #ffdd00);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo a:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        nav.desktop-nav {
            display: flex;
            gap: 2rem;
        }
        nav.desktop-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        nav.desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary);
            transition: width 0.3s;
        }
        nav.desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--secondary);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--dark);
            padding: 1rem;
            margin-top: 1rem;
            border-radius: 8px;
            gap: 1rem;
        }
        .mobile-nav.active {
            display: flex;
        }
        .breadcrumb {
            background: white;
            padding: 1rem;
            margin: 1rem auto;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .main-grid {
            display: grid;
            grid-template-columns: 3fr 1fr;
            gap: 2.5rem;
            margin: 2rem auto;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid var(--secondary);
            padding-left: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--secondary);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--gray);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            font-size: 1.05rem;
        }
        .highlight {
            background: linear-gradient(90deg, #fef3c7, #fde68a);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid var(--secondary);
            margin: 1.5rem 0;
            font-weight: 600;
        }
        blockquote {
            font-style: italic;
            border-left: 4px solid var(--primary);
            padding-left: 1.5rem;
            margin: 1.5rem 0;
            color: var(--gray);
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            transition: transform 0.3s;
        }
        img:hover {
            transform: scale(1.01);
        }
        figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -0.5rem;
            margin-bottom: 1.5rem;
        }
        .form-section {
            background: #f8fafc;
            padding: 2rem;
            border-radius: 10px;
            margin: 2.5rem 0;
            border: 1px solid #e2e8f0;
        }
        .form-section h3 {
            margin-top: 0;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.2);
        }
        button {
            background: linear-gradient(90deg, var(--primary), #3b82f6);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }
        button:hover {
            background: linear-gradient(90deg, #1c3fb0, #2563eb);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
        }
        friend-link {
            display: block;
            background: white;
            padding: 2rem;
            border-radius: 12px;
            margin: 2.5rem auto;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        friend-link h3 {
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .friend-links-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .friend-links-list li {
            background: #f1f5f9;
            padding: 0.8rem;
            border-radius: 6px;
            transition: background 0.3s;
        }
        .friend-links-list li:hover {
            background: #e2e8f0;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0;
            text-align: center;
            margin-top: 3rem;
        }
        footer a {
            color: var(--secondary);
        }
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin: 1.5rem 0;
            flex-wrap: wrap;
        }
        .footer-links a {
            font-size: 1.2rem;
        }
        .copyright {
            margin-top: 1.5rem;
            color: #9ca3af;
            font-size: 0.9rem;
        }
        .last-updated {
            background: #dbeafe;
            padding: 0.8rem;
            border-radius: 6px;
            margin-bottom: 2rem;
            font-weight: 600;
            color: var(--primary);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .tag {
            display: inline-block;
            background: #e0e7ff;
            color: var(--primary);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.9rem;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            article { padding: 1.5rem; }
            nav.desktop-nav { display: none; }
            .hamburger { display: block; }
            .header-inner { padding: 0 1rem; }
        }