* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0f172a;
            color: #e2e8f0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #38bdf8;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 1rem 0;
            border-bottom: 2px solid #334155;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #22c55e, #3b82f6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
            letter-spacing: -0.5px;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #3b82f6;
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #e2e8f0;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #1e293b;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            border-top: 1px solid #334155;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 1rem;
            border-bottom: 1px solid #334155;
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #94a3b8;
            background-color: #1e293b;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: #cbd5e1;
        }
        .breadcrumb span {
            margin: 0 0.5rem;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: #1e293b;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
        }
        .article-header {
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 2px solid #334155;
        }
        h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: #f8fafc;
            background: linear-gradient(90deg, #22c55e, #60a5fa);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            color: #94a3b8;
            font-size: 0.95rem;
        }
        .last-updated {
            background: #0f172a;
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            margin: 3rem 0 1.5rem 0;
            color: #38bdf8;
            padding-bottom: 0.5rem;
            border-bottom: 1px dashed #475569;
        }
        h3 {
            font-size: 1.6rem;
            margin: 2.5rem 0 1rem 0;
            color: #22c55e;
        }
        h4 {
            font-size: 1.3rem;
            margin: 2rem 0 0.8rem 0;
            color: #fbbf24;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            background: rgba(59, 130, 246, 0.1);
            padding: 1.5rem;
            border-left: 4px solid #3b82f6;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .key-point {
            background: rgba(34, 197, 94, 0.1);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #22c55e;
            margin: 2rem 0;
        }
        .key-point strong {
            color: #22c55e;
        }
        .highlight {
            background-color: rgba(251, 191, 36, 0.15);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: bold;
            color: #fbbf24;
        }
        .image-container {
            margin: 2.5rem auto;
            text-align: center;
        }
        .image-caption {
            font-size: 0.95rem;
            color: #94a3b8;
            margin-top: 0.5rem;
            font-style: italic;
        }
        ul, ol {
            margin: 1.5rem 0 1.5rem 2rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        blockquote {
            border-left: 4px solid #8b5cf6;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #cbd5e1;
            background: rgba(139, 92, 246, 0.1);
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .link-list {
            background: #0f172a;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .link-list h4 {
            margin-top: 0;
        }
        .link-list ul {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            list-style: none;
            margin: 1rem 0 0 0;
        }
        .link-list li {
            margin: 0;
        }
        .link-list a {
            background: #334155;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            display: inline-block;
            transition: all 0.3s ease;
        }
        .link-list a:hover {
            background: #3b82f6;
            transform: translateY(-2px);
        }
        .sidebar {
            background: #1e293b;
            border-radius: 12px;
            padding: 2rem;
            align-self: start;
            position: sticky;
            top: 120px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #f8fafc;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #334155;
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.8rem 1rem;
            border: 1px solid #475569;
            background: #0f172a;
            color: #e2e8f0;
            border-radius: 8px 0 0 8px;
            outline: none;
        }
        .search-form button {
            background: #3b82f6;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .search-form button:hover {
            background: #2563eb;
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #475569;
            cursor: pointer;
        }
        .stars .star {
            transition: color 0.2s ease;
        }
        .stars .star:hover,
        .stars .star.active {
            color: #fbbf24;
        }
        .rating-form button {
            background: #22c55e;
            color: white;
            border: none;
            padding: 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s ease;
        }
        .rating-form button:hover {
            background: #16a34a;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            background: #0f172a;
            border: 1px solid #475569;
            border-radius: 8px;
            color: #e2e8f0;
            margin-top: 1rem;
            min-height: 120px;
            resize: vertical;
            outline: none;
        }
        .comment-form button {
            background: #8b5cf6;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            cursor: pointer;
            margin-top: 1rem;
            font-weight: 600;
            transition: background 0.3s ease;
        }
        .comment-form button:hover {
            background: #7c3aed;
        }
        .site-footer {
            background: #0f172a;
            border-top: 2px solid #334155;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            margin: 2rem 0;
            padding: 1.5rem;
            background: #1e293b;
            border-radius: 12px;
            width: 100%;
        }
        friend-link a {
            padding: 0.5rem 1rem;
            background: #334155;
            border-radius: 20px;
            transition: all 0.3s ease;
        }
        friend-link a:hover {
            background: #3b82f6;
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            color: #94a3b8;
            font-size: 0.9rem;
            padding-top: 2rem;
            border-top: 1px solid #334155;
            width: 100%;
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 3rem; }
        .mb-3 { margin-bottom: 3rem; }
        .emoji { font-size: 1.2em; }