* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2a3b8f;
            --secondary: #f5a623;
            --accent: #e74c3c;
            --dark: #1a1a2e;
            --light: #f8f9fa;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        body {
            background-color: #f0f2f5;
            color: #333;
            line-height: 1.6;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 2rem;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .logo a {
            color: white;
            font-size: 1.8rem;
            font-weight: 800;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .desktop-nav {
            display: flex;
            gap: 1.5rem;
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .desktop-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--dark);
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.05);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--gray);
            margin: 0 5px;
        }
        .container {
            max-width: 1400px;
            margin: 2rem auto;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            padding: 0 2rem;
        }
        .main-content {
            background-color: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--dark);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 1rem;
        }
        h2 {
            color: var(--primary);
            font-size: 1.8rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px dashed #ddd;
        }
        h3 {
            color: var(--dark);
            font-size: 1.4rem;
            margin: 1.8rem 0 1rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.1rem;
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-left: 4px solid var(--secondary);
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .hero-image {
            width: 100%;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s ease;
        }
        .hero-image:hover {
            transform: scale(1.01);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px solid #ffeaa7;
            margin: 1.5rem 0;
        }
        .tip {
            background-color: #e8f4fd;
            padding: 1.2rem;
            border-radius: 8px;
            margin: 1.2rem 0;
            border-left: 4px solid var(--primary);
        }
        .tip i {
            color: var(--primary);
            margin-right: 10px;
        }
        .tier-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .tier-card {
            background: linear-gradient(145deg, #ffffff, #f0f0f0);
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease;
        }
        .tier-card:hover {
            transform: translateY(-5px);
        }
        .tier-card h4 {
            color: white;
            padding: 0.7rem;
            border-radius: 6px 6px 0 0;
            margin: -1.5rem -1.5rem 1rem -1.5rem;
            text-align: center;
        }
        .tier-s {
            background-color: #ff6b6b;
        }
        .tier-a {
            background-color: #feca57;
        }
        .tier-b {
            background-color: #48dbfb;
        }
        .tier-c {
            background-color: #1dd1a1;
        }
        .hero-item {
            display: flex;
            align-items: center;
            padding: 0.8rem;
            border-bottom: 1px solid #eee;
        }
        .hero-item:last-child {
            border-bottom: none;
        }
        .hero-icon {
            width: 40px;
            height: 40px;
            background-color: #ddd;
            border-radius: 50%;
            margin-right: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--dark);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .widget {
            background-color: white;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        .search-box {
            display: flex;
            margin-bottom: 1.5rem;
        }
        .search-box input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .search-box button:hover {
            background-color: #1c2a6e;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #ffd700;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars i {
            transition: color 0.2s;
            margin: 0 2px;
        }
        .stars i:hover {
            color: #ffed4e;
        }
        .submit-rating {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
            width: 100%;
        }
        .submit-rating:hover {
            background-color: #e69500;
        }
        .comments-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #eee;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 120px;
        }
        .comment-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .comment-form button:hover {
            background-color: #1c2a6e;
        }
        .comment {
            background-color: #f8f9fa;
            padding: 1.2rem;
            border-radius: 8px;
            margin: 1.2rem 0;
            border-left: 3px solid var(--primary);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.8rem;
            color: var(--gray);
            font-size: 0.9rem;
        }
        .footer-links {
            max-width: 1400px;
            margin: 3rem auto 1rem;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
        }
        .web-link {
            background-color: white;
            padding: 1rem;
            border-radius: 6px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        .web-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            display: block;
            padding: 0.3rem 0;
            transition: color 0.3s;
        }
        .web-link a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 2.5rem 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .copyright {
            text-align: center;
            width: 100%;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
            }
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .container, .breadcrumb, .header-container {
                padding: 0 1rem;
            }
            .main-content {
                padding: 1.5rem;
            }
            .tier-list {
                grid-template-columns: 1fr;
            }
            .footer-links {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .footer-links {
                grid-template-columns: 1fr;
            }
            .footer-container {
                flex-direction: column;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .bold {
            font-weight: 800;
            color: var(--dark);
        }
        .keyword {
            background-color: #eef2ff;
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: 600;
            color: var(--primary);
        }
        a.article-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary);
            transition: all 0.3s;
        }
        a.article-link:hover {
            color: var(--accent);
            border-bottom: 1px solid var(--accent);
        }