* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0f1419;
            color: #d9d9d9;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #74c0fc;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 60px 0;
        }
        h1, h2, h3, h4 {
            color: #f8f9fa;
            margin-bottom: 1.2rem;
            font-weight: 700;
            line-height: 1.3;
        }
        h1 {
            font-size: clamp(2.5rem, 5vw, 3.8rem);
            text-align: center;
            margin-top: 1rem;
            color: #e9ecef;
            border-bottom: 3px solid #495057;
            padding-bottom: 1.5rem;
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid #339af0;
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #adb5bd;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #ced4da;
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #a5d8ff;
            font-weight: 300;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #1c7ed633;
            border-left: 4px solid #339af0;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .note {
            background-color: #2b8a3e33;
            border-left: 4px solid #51cf66;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        header {
            background-color: #1a1d21;
            border-bottom: 2px solid #339af0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #f8f9fa;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            background: linear-gradient(90deg, #339af0, #51cf66);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none !important;
        }
        .my-logo:hover {
            text-decoration: none !important;
            background: linear-gradient(90deg, #51cf66, #339af0);
            -webkit-background-clip: text;
            background-clip: text;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #ced4da;
            font-weight: 500;
            font-size: 1.05rem;
            padding: 8px 5px;
            position: relative;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #339af0;
            transition: width 0.3s ease;
        }
        nav a:hover::after,
        nav a.active::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #f8f9fa;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 20px;
            background-color: #212529;
            font-size: 0.95rem;
            border-bottom: 1px solid #495057;
        }
        .breadcrumb a {
            color: #adb5bd;
        }
        .breadcrumb i {
            margin: 0 10px;
            color: #6c757d;
        }
        .hero-search {
            background: linear-gradient(rgba(15, 20, 25, 0.9), rgba(15, 20, 25, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            padding: 80px 20px;
            text-align: center;
        }
        .search-box {
            max-width: 700px;
            margin: 30px auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        .search-input {
            flex-grow: 1;
            padding: 18px 25px;
            border: none;
            background-color: #2b3035;
            color: #f8f9fa;
            font-size: 1.1rem;
        }
        .search-input::placeholder {
            color: #868e96;
        }
        .search-btn {
            background-color: #339af0;
            color: white;
            border: none;
            padding: 0 35px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .search-btn:hover {
            background-color: #1c7ed6;
        }
        .main-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-top: 40px;
        }
        @media (max-width: 992px) {
            .main-layout {
                grid-template-columns: 1fr;
            }
        }
        .sidebar {
            background-color: #1a1d21;
            border-radius: 10px;
            padding: 25px;
            align-self: start;
            position: sticky;
            top: 140px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        .sidebar h3 {
            font-size: 1.5rem;
            border-bottom: 2px solid #495057;
            padding-bottom: 10px;
            margin-top: 0;
        }
        .sidebar ul {
            list-style: none;
            margin-top: 20px;
        }
        .sidebar li {
            margin-bottom: 15px;
            padding-left: 15px;
            border-left: 3px solid transparent;
            transition: all 0.3s;
        }
        .sidebar li:hover {
            border-left-color: #339af0;
            padding-left: 20px;
        }
        .sidebar a {
            color: #ced4da;
            display: block;
        }
        .update-time {
            background-color: #212529;
            padding: 15px;
            border-radius: 8px;
            margin-top: 30px;
            text-align: center;
            font-size: 0.9rem;
            color: #868e96;
        }
        .update-time strong {
            color: #51cf66;
            font-size: 1.1rem;
            display: block;
            margin-top: 5px;
        }
        .article-content img {
            border-radius: 10px;
            margin: 2.5rem auto;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
            border: 1px solid #495057;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #868e96;
            margin-top: -1.5rem;
            margin-bottom: 2.5rem;
            font-size: 0.95rem;
        }
        .rating-section, .comment-section {
            background-color: #1a1d21;
            border-radius: 10px;
            padding: 30px;
            margin-top: 60px;
            border: 1px solid #495057;
        }
        .rating-section h2, .comment-section h2 {
            border-left: none;
            padding-left: 0;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .rating-section h2 i, .comment-section h2 i {
            color: #ffd43b;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 25px 0;
        }
        .star {
            font-size: 2.5rem;
            color: #495057;
            cursor: pointer;
            transition: color 0.2s, transform 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffd43b;
            transform: scale(1.1);
        }
        .rating-form, .comment-form {
            display: grid;
            gap: 20px;
            margin-top: 25px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 8px;
            color: #ced4da;
            font-weight: 500;
        }
        .form-control {
            padding: 15px;
            background-color: #2b3035;
            border: 1px solid #495057;
            border-radius: 8px;
            color: #f8f9fa;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #339af0;
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .btn-submit {
            background-color: #339af0;
            color: white;
            border: none;
            padding: 16px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s, transform 0.2s;
            justify-self: start;
        }
        .btn-submit:hover {
            background-color: #1c7ed6;
            transform: translateY(-3px);
        }
        footer {
            background-color: #1a1d21;
            border-top: 2px solid #339af0;
            margin-top: 80px;
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            border-bottom: 2px solid #495057;
            padding-bottom: 10px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        friend-link {
            display: block;
            padding: 12px 15px;
            background-color: #212529;
            border-radius: 6px;
            margin-bottom: 10px;
            transition: background-color 0.3s, transform 0.2s;
        }
        friend-link:hover {
            background-color: #2b3035;
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #495057;
            color: #868e96;
            font-size: 0.9rem;
        }
        .copyright a {
            color: #adb5bd;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #1a1d21;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 20px;
                border-top: 1px solid #495057;
                box-shadow: 0 10px 15px rgba(0,0,0,0.5);
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .hero-search {
                padding: 50px 20px;
            }
            .search-box {
                flex-direction: column;
                border-radius: 15px;
            }
            .search-input, .search-btn {
                width: 100%;
                border-radius: 0;
                padding: 18px;
            }
            .sidebar {
                position: static;
            }
        }
        .text-center {
            text-align: center;
        }
        .mb-4 {
            margin-bottom: 2rem;
        }
        .mt-4 {
            margin-top: 2rem;
        }
        .emoji {
            font-size: 1.3em;
            margin-right: 8px;
        }
        .tag {
            display: inline-block;
            background-color: #339af0;
            color: white;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 10px;
            margin-bottom: 10px;
        }