* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #f0f4f8 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #d32f2f;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: #9a0007;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 50%, #3949ab 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #ffeb3b;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            text-decoration: none;
            color: #ffc107;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .nav-links a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .nav-links a:hover, .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 0.8rem 0;
            background-color: #e8eaf6;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #5c6bc0;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
            padding: 2.5rem;
            margin-bottom: 2rem;
        }
        h1 {
            color: #1a237e;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 0.5rem;
        }
        h2 {
            color: #283593;
            font-size: 2rem;
            margin: 2.5rem 0 1rem;
            padding-top: 1rem;
            border-top: 1px dashed #c5cae9;
        }
        h3 {
            color: #3949ab;
            font-size: 1.6rem;
            margin: 1.8rem 0 0.8rem;
        }
        h4 {
            color: #5c6bc0;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.6rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #555;
            background: #f9f9ff;
            padding: 1.5rem;
            border-left: 5px solid #d32f2f;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, #ffeb3b44 0%, #ffeb3b44 100%);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            border: 1px solid #ffeb3b;
        }
        .feature-img {
            width: 80%;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border: 5px solid white;
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .functional-box {
            background: #f8f9fa;
            border-left: 4px solid #d32f2f;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .functional-box h3 {
            color: #d32f2f;
            margin-top: 0;
        }
        .search-box, .comment-box, .rating-box {
            margin-bottom: 2rem;
        }
        form {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            flex: 1;
            min-width: 200px;
        }
        button, .btn {
            background: linear-gradient(90deg, #d32f2f 0%, #b71c1c 100%);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: bold;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #b71c1c 0%, #9a0007 100%);
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(183, 28, 28, 0.3);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .content-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 2rem 0;
            justify-content: center;
        }
        .content-links a {
            background: #e8eaf6;
            padding: 0.8rem 1.5rem;
            border-radius: 30px;
            color: #3949ab;
            font-weight: 600;
            border: 2px solid transparent;
        }
        .content-links a:hover {
            background: #3949ab;
            color: white;
            border-color: #3949ab;
            text-decoration: none;
        }
        footer {
            background: #1a237e;
            color: white;
            padding: 2.5rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #ffeb3b;
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #c5cae9;
        }
        .footer-links a:hover {
            color: #ffeb3b;
        }
        friend-link {
            display: block;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 6px;
            margin: 0.5rem 0;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            color: #c5cae9;
            font-size: 0.9rem;
        }
        .update-time {
            color: #ffcc80;
            font-weight: bold;
        }
        @media (max-width: 992px) {
            .feature-img {
                width: 95%;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #283593;
                padding: 1rem;
                box-shadow: 0 6px 12px rgba(0,0,0,0.1);
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            article {
                padding: 1.5rem;
            }
        }