*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f6f9fc;
            color: #1a2a3a;
            line-height: 1.8;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #004499;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.6rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            color: #0b1a2a;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4rem;
        }
        h2 {
            font-size: 1.9rem;
            border-bottom: 3px solid #e8a317;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.2rem;
            color: #2c5282;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2a 0%, #1a3a5a 100%);
            color: #fff;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #f5d061, #e8a317);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: #e8a317;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .my-logo span {
            font-size: 0.75rem;
            display: block;
            -webkit-text-fill-color: #aac8e0;
            font-weight: 400;
            letter-spacing: 1px;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-main a {
            color: #dde9f5;
            padding: 8px 14px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-main a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f5d061;
            text-decoration: none;
        }
        .nav-main a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #eef3f7;
            padding: 10px 20px;
            font-size: 0.85rem;
            border-bottom: 1px solid #dce4eb;
        }
        .breadcrumb-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb a {
            color: #2c5282;
        }
        .breadcrumb span {
            color: #5a6a7a;
        }
        .breadcrumb .sep {
            color: #aabaca;
            margin: 0 4px;
        }
        .main-content {
            padding: 30px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body {
            background: #fff;
            border-radius: 20px;
            padding: 32px 36px;
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.05);
        }
        .article-body .featured-image {
            margin: 20px 0 28px;
            border-radius: 16px;
            overflow: hidden;
        }
        .article-body .featured-image img {
            width: 100%;
            object-fit: cover;
        }
        .article-body .featured-image figcaption {
            font-size: 0.8rem;
            color: #6a7a8a;
            text-align: center;
            padding: 8px 0 0;
            font-style: italic;
        }
        .update-date {
            display: inline-block;
            background: #eef3f7;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #3a5a7a;
            margin-bottom: 16px;
        }
        .update-date i {
            margin-right: 6px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-box {
            background: #fff;
            border-radius: 16px;
            padding: 22px 20px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
        }
        .sidebar-box h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #e8a317;
            padding-bottom: 8px;
            margin-bottom: 14px;
        }
        .sidebar-box ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-box ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f4f8;
        }
        .sidebar-box ul li:last-child {
            border-bottom: none;
        }
        .sidebar-box ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #1e3a5f;
            font-weight: 500;
        }
        .sidebar-box ul li a i {
            color: #e8a317;
            width: 18px;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 10px 0 4px;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid #dce4eb;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
            background: #fafcfe;
        }
        .search-form input[type="text"]:focus {
            border-color: #e8a317;
        }
        .search-form button {
            background: #e8a317;
            border: none;
            color: #fff;
            padding: 0 20px;
            border-radius: 40px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s;
            font-weight: 600;
        }
        .search-form button:hover {
            background: #c9890a;
        }
        .comment-rating-section {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 2px solid #eef3f7;
        }
        .comment-rating-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .comment-box,
        .rating-box {
            background: #f8fafc;
            border-radius: 16px;
            padding: 24px 22px;
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce4eb;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
            transition: border 0.3s;
            background: #fff;
        }
        .comment-box textarea:focus {
            border-color: #e8a317;
            outline: none;
        }
        .comment-box input[type="text"] {
            width: 100%;
            padding: 10px 16px;
            border: 2px solid #dce4eb;
            border-radius: 12px;
            font-size: 0.95rem;
            margin-top: 10px;
            transition: border 0.3s;
        }
        .comment-box input[type="text"]:focus {
            border-color: #e8a317;
            outline: none;
        }
        .comment-box .btn-submit,
        .rating-box .btn-submit {
            background: #1a3a5a;
            color: #fff;
            border: none;
            padding: 10px 28px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            margin-top: 12px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-box .btn-submit:hover,
        .rating-box .btn-submit:hover {
            background: #0b1a2a;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 10px 0 12px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #d0d8e0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #e8a317;
        }
        .site-footer {
            background: #0b1a2a;
            color: #bccddc;
            padding: 40px 20px 20px;
            margin-top: 20px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-inner h4 {
            color: #f5d061;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: #aac8e0;
        }
        .footer-inner a:hover {
            color: #f5d061;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 30px auto 0;
            padding-top: 20px;
            border-top: 1px solid #1a3a5a;
            text-align: center;
            font-size: 0.85rem;
            color: #7a9aaa;
        }
        .footer-bottom .copyright {
            margin-bottom: 6px;
        }
        friend-link {
            display: block;
            margin: 12px 0;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 8px 4px 0;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 30px;
            font-size: 0.85rem;
            color: #bccddc;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f5d061;
            text-decoration: none;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .nav-main {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 0 8px;
                gap: 4px;
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                width: 100%;
                padding: 10px 16px;
                border-radius: 8px;
            }
            .hamburger {
                display: block;
            }
            .article-body {
                padding: 18px 16px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .comment-rating-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .sidebar {
                order: 2;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 10px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-body {
                padding: 14px 12px;
            }
            h1 {
                font-size: 1.5rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 8px 12px;
            }
        }
        .highlight {
            background: linear-gradient(to right, #fff7e6, #fff0d0);
            padding: 2px 8px;
            border-radius: 6px;
            font-weight: 600;
        }
        .pro-tip {
            background: #eaf5ea;
            border-left: 5px solid #2d8a4e;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
        }
        .pro-tip i {
            color: #2d8a4e;
            margin-right: 8px;
        }
        .player-quote {
            background: #f0f4ff;
            border-left: 5px solid #1a3a5a;
            padding: 16px 22px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
            font-style: italic;
        }
        .player-quote .attribution {
            font-style: normal;
            font-weight: 600;
            margin-top: 8px;
            display: block;
            color: #1a3a5a;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.92rem;
        }
        .data-table th {
            background: #1a3a5a;
            color: #fff;
            padding: 10px 14px;
            text-align: left;
        }
        .data-table td {
            padding: 10px 14px;
            border-bottom: 1px solid #eef3f7;
        }
        .data-table tr:nth-child(even) {
            background: #f8fafc;
        }
        .data-table tr:hover {
            background: #f0f4ff;
        }
        @media print {
            .site-header,
            .site-footer,
            .sidebar,
            .breadcrumb,
            .comment-rating-section,
            .search-form {
                display: none !important;
            }
            .article-body {
                box-shadow: none;
                padding: 0;
            }
            body {
                background: #fff;
                color: #000;
            }
        }