* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #0a2e38 0%, #1a1a2e 100%);
            color: #e0e0e0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #29b6f6;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .site-header {
            background: rgba(10, 46, 56, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #0d7377;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Trebuchet MS', sans-serif;
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #0d7377, #4fc3f7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
        }
        .my-logo:hover {
            animation: logo-pulse 0.5s ease;
        }
        @keyframes logo-pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #b0bec5;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: rgba(13, 115, 119, 0.3);
            color: #4fc3f7;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #4fc3f7;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: rgba(26, 26, 46, 0.7);
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #0d7377;
        }
        .search-module {
            background: rgba(13, 115, 119, 0.15);
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            border-left: 5px solid #0d7377;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #0d7377;
            border-radius: 8px 0 0 8px;
            background: #1a1a2e;
            color: #e0e0e0;
            font-size: 1rem;
        }
        .search-btn {
            background: linear-gradient(90deg, #0d7377, #14a1a8);
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        .search-btn:hover {
            background: linear-gradient(90deg, #14a1a8, #0d7377);
        }
        main {
            flex-grow: 1;
            padding: 2rem 0;
        }
        .article-content {
            background: rgba(26, 26, 46, 0.8);
            backdrop-filter: blur(5px);
            border-radius: 15px;
            padding: 3rem;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
            border: 1px solid #2a2a4a;
        }
        h1 {
            font-size: 2.8rem;
            color: #4fc3f7;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
            border-bottom: 3px solid #0d7377;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #0d7377;
            margin: 2.5rem 0 1rem;
            padding-left: 10px;
            border-left: 5px solid #4fc3f7;
        }
        h3 {
            font-size: 1.6rem;
            color: #29b6f6;
            margin: 2rem 0 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #80deea;
            margin: 1.5rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #bbdefb;
            font-weight: 300;
            margin-bottom: 2rem;
            text-align: center;
            font-style: italic;
        }
        .highlight {
            background: rgba(13, 115, 119, 0.2);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            border-left: 4px solid #4fc3f7;
        }
        .bold {
            font-weight: 800;
            color: #4fc3f7;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .figure {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .figure img {
            border-radius: 10px;
            border: 3px solid #0d7377;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.7);
            transition: transform 0.5s ease;
        }
        .figure img:hover {
            transform: scale(1.02);
        }
        .figcaption {
            margin-top: 0.8rem;
            font-style: italic;
            color: #b0bec5;
            font-size: 0.95rem;
        }
        .user-module {
            background: rgba(41, 182, 246, 0.1);
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #29b6f6;
        }
        .module-title {
            color: #29b6f6;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-form, .comment-form {
            display: grid;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .star-rating {
            display: flex;
            gap: 5px;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #555;
            font-size: 2rem;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #ffc107;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 0.9rem;
            border-radius: 8px;
            border: 1px solid #2a2a4a;
            background: #1a1a2e;
            color: #e0e0e0;
            font-family: inherit;
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .form-submit {
            background: linear-gradient(90deg, #0d7377, #14a1a8);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: bold;
            font-size: 1rem;
            justify-self: start;
            transition: background 0.3s ease, transform 0.2s;
        }
        .form-submit:hover {
            background: linear-gradient(90deg, #14a1a8, #0d7377);
            transform: translateY(-2px);
        }
        .site-footer {
            background: #0a1620;
            color: #b0bec5;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
            border-top: 3px solid #0d7377;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h3 {
            color: #4fc3f7;
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #bbdefb;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link a::before {
            content: '🃏';
        }
        friend-link a:hover {
            color: #4fc3f7;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2a2a4a;
            font-size: 0.9rem;
            color: #8a9ba8;
        }
        .update-time {
            color: #0d7377;
            font-weight: bold;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: 8px;
                margin-bottom: 10px;
            }
            .search-btn {
                border-radius: 8px;
                padding: 0.9rem;
            }
        }