* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-bg: #0f1525;
            --secondary-bg: #1a2238;
            --accent-gold: #ffb347;
            --accent-blue: #4a9bff;
            --text-primary: #e0e7ff;
            --text-secondary: #a0abc0;
            --border-color: #2d3748;
            --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-gold);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 60px 0;
        }
        .site-header {
            background: var(--secondary-bg);
            border-bottom: 2px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ffb347, #ffcc33);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--accent-gold);
            border-bottom-color: var(--accent-gold);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--accent-gold);
        }
        .breadcrumb {
            background: rgba(26, 34, 56, 0.8);
            padding: 12px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent-gold);
        }
        .breadcrumb span {
            color: var(--accent-gold);
            margin: 0 8px;
        }
        .article-hero {
            text-align: center;
            padding: 50px 20px;
            background: linear-gradient(135deg, #1a2238 0%, #0f1525 100%);
            border-bottom: 3px solid var(--accent-gold);
        }
        .article-hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #ffb347, #ffcc33);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .article-lead {
            font-size: 1.3rem;
            color: var(--text-secondary);
            max-width: 900px;
            margin: 0 auto 30px;
        }
        .last-updated {
            display: inline-block;
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: bold;
            font-size: 0.95rem;
        }
        .meta-search {
            max-width: 700px;
            margin: 40px auto;
            padding: 0 20px;
        }
        .search-form {
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        .search-form input {
            flex: 1;
            padding: 18px 25px;
            border: none;
            background: var(--secondary-bg);
            color: var(--text-primary);
            font-size: 1.1rem;
        }
        .search-form button {
            background: linear-gradient(90deg, #ffb347, #ffcc33);
            color: var(--primary-bg);
            border: none;
            padding: 0 35px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            opacity: 0.9;
        }
        .pyramid-structure {
            padding: 40px 20px;
        }
        .pyramid-structure h2 {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin: 50px 0 25px;
            padding-bottom: 15px;
            border-bottom: 3px solid var(--border-color);
        }
        .pyramid-structure h3 {
            font-size: 1.9rem;
            color: var(--accent-blue);
            margin: 40px 0 20px;
        }
        .pyramid-structure h4 {
            font-size: 1.5rem;
            color: var(--text-primary);
            margin: 30px 0 15px;
        }
        .pyramid-structure p {
            margin-bottom: 25px;
            font-size: 1.1rem;
            color: var(--text-secondary);
            text-align: justify;
        }
        .pyramid-structure strong {
            color: var(--accent-gold);
            font-weight: 700;
        }
        .content-highlight {
            background: linear-gradient(90deg, rgba(255,179,71,0.1) 0%, transparent 100%);
            border-left: 5px solid var(--accent-gold);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
        }
        .meta-image {
            max-width: 900px;
            margin: 40px auto;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 3px solid var(--border-color);
        }
        .meta-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .meta-image:hover img {
            transform: scale(1.03);
        }
        .image-caption {
            padding: 15px;
            background: var(--secondary-bg);
            font-style: italic;
            color: var(--text-secondary);
            text-align: center;
            font-size: 0.95rem;
        }
        .interactive-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }
        .card {
            background: var(--secondary-bg);
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .card:hover {
            transform: translateY(-10px);
            border-color: var(--accent-gold);
        }
        .card-header {
            background: linear-gradient(90deg, #4a9bff, #2d3748);
            padding: 20px;
            font-size: 1.4rem;
            font-weight: bold;
            text-align: center;
        }
        .card-body {
            padding: 25px;
        }
        .user-interaction {
            background: var(--secondary-bg);
            border-radius: 15px;
            padding: 40px;
            margin: 60px auto;
            max-width: 900px;
            box-shadow: var(--card-shadow);
        }
        .user-interaction h3 {
            text-align: center;
            margin-bottom: 30px;
            color: var(--accent-gold);
        }
        .rating-section,
        .comment-section {
            margin-bottom: 40px;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
        }
        .star-rating i {
            font-size: 2.5rem;
            color: #555;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: var(--accent-gold);
        }
        .interaction-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .interaction-form input,
        .interaction-form textarea {
            padding: 18px;
            background: var(--primary-bg);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            color: var(--text-primary);
            font-size: 1rem;
        }
        .interaction-form textarea {
            min-height: 150px;
            resize: vertical;
        }
        .interaction-form button {
            padding: 18px;
            background: linear-gradient(90deg, #ffb347, #ffcc33);
            color: var(--primary-bg);
            border: none;
            border-radius: 10px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .interaction-form button:hover {
            opacity: 0.9;
        }
        .site-footer {
            background: var(--secondary-bg);
            border-top: 3px solid var(--accent-gold);
            padding: 50px 0 30px;
            margin-top: 80px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            padding: 0 20px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ffb347, #ffcc33);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
        }
        .footer-links h4 {
            color: var(--accent-gold);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        friend-link {
            display: block;
            padding: 12px 20px;
            background: var(--primary-bg);
            margin: 10px 0;
            border-radius: 8px;
            border-left: 4px solid var(--accent-blue);
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255,179,71,0.1);
            border-left-color: var(--accent-gold);
        }
        .copyright {
            text-align: center;
            padding: 30px 20px 0;
            margin-top: 40px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .article-hero h1 { font-size: 2.7rem; }
            .pyramid-structure h2 { font-size: 2.2rem; }
            .pyramid-structure h3 { font-size: 1.7rem; }
            .interactive-cards { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--secondary-bg);
                padding: 20px;
                border-top: 2px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.3);
            }
            .main-nav ul.active { display: flex; }
            .main-nav li { margin: 10px 0; }
            .article-hero h1 { font-size: 2.3rem; }
            .article-lead { font-size: 1.1rem; }
            .pyramid-structure h2 { font-size: 1.9rem; }
            .user-interaction { padding: 30px 20px; }
            .footer-container { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .article-hero h1 { font-size: 1.9rem; }
            .search-form { flex-direction: column; border-radius: 15px; }
            .search-form input, .search-form button { width: 100%; border-radius: 0; }
            .interactive-cards { grid-template-columns: 1fr; }
            .card-header { font-size: 1.2rem; }
        }