* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background: linear-gradient(135deg, #0c1a2d 0%, #1a365d 100%);
            color: #e2e8f0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #63b3ed;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: #90cdf4;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: rgba(11, 25, 41, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #2d3748;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #fbbf24, #f59e0b, #dc2626);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo a:hover {
            text-decoration: none;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #cbd5e0;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 6px;
        }
        .main-nav a:hover, .main-nav a.active {
            background: rgba(45, 55, 72, 0.7);
            color: #f7fafc;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #f7fafc;
            background: none;
            border: none;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        .breadcrumb a {
            color: #a0aec0;
        }
        .search-container {
            margin: 30px 0;
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex: 1;
            padding: 18px 25px;
            border: none;
            background: #2d3748;
            color: #f7fafc;
            font-size: 1rem;
        }
        .search-input::placeholder {
            color: #a0aec0;
        }
        .search-btn {
            background: linear-gradient(90deg, #ed8936, #dd6b20);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: linear-gradient(90deg, #f6ad55, #ed8936);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        @media (max-width: 768px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-area {
            background: rgba(26, 32, 44, 0.8);
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.4);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 25px;
            color: #fefcbf;
            line-height: 1.2;
            border-bottom: 3px solid #ed8936;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            margin: 40px 0 20px;
            color: #fbd38d;
            padding-left: 15px;
            border-left: 5px solid #63b3ed;
        }
        h3 {
            font-size: 1.6rem;
            margin: 30px 0 15px;
            color: #9ae6b4;
        }
        h4 {
            font-size: 1.3rem;
            margin: 25px 0 12px;
            color: #90cdf4;
        }
        p {
            margin-bottom: 22px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #cbd5e0;
            background: rgba(45, 55, 72, 0.4);
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #ed8936;
        }
        .highlight {
            background: rgba(246, 173, 85, 0.15);
            border-left: 4px solid #f6ad55;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 8px;
        }
        b, strong {
            color: #fefcbf;
        }
        .sidebar {
            background: rgba(26, 32, 44, 0.8);
            border-radius: 15px;
            padding: 25px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.4);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            color: #fbd38d;
            margin-top: 0;
            border-bottom: 2px solid #4a5568;
            padding-bottom: 10px;
        }
        .sidebar ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #4a5568;
        }
        .sidebar a {
            display: block;
            padding: 8px 0;
        }
        .user-interaction {
            margin: 50px 0;
            padding: 30px;
            background: rgba(26, 32, 44, 0.9);
            border-radius: 15px;
            border: 1px solid #4a5568;
        }
        .rating-section, .comment-section {
            margin-bottom: 40px;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 20px;
        }
        .stars {
            display: flex;
            gap: 10px;
            direction: rtl;
        }
        .star {
            font-size: 2rem;
            color: #4a5568;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star:hover ~ .star {
            color: #f6e05e;
        }
        .rating-form input[type="radio"]:checked ~ .star {
            color: #f6e05e;
        }
        .rating-form input[type="radio"] {
            display: none;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 8px;
            font-weight: bold;
            color: #cbd5e0;
        }
        .form-group input,
        .form-group textarea {
            padding: 15px;
            border-radius: 8px;
            border: 1px solid #4a5568;
            background: #2d3748;
            color: #f7fafc;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            align-self: flex-start;
            padding: 15px 35px;
            background: linear-gradient(90deg, #38a169, #2f855a);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #48bb78, #38a169);
            transform: translateY(-3px);
        }
        .site-footer {
            background: #0c1a2d;
            border-top: 2px solid #2d3748;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h4 {
            color: #fbd38d;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            background: rgba(45, 55, 72, 0.5);
            padding: 12px 20px;
            margin-bottom: 10px;
            border-radius: 6px;
            border-left: 4px solid #63b3ed;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: rgba(45, 55, 72, 0.8);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        .update-time {
            color: #f6ad55;
            font-style: italic;
            margin: 20px 0;
            text-align: right;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .article-area, .sidebar { padding: 25px; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 20px;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 10px;
            }
            .hamburger {
                display: block;
            }
            .search-form { flex-direction: column; border-radius: 10px; }
            .search-input, .search-btn { border-radius: 0; padding: 15px; }
        }