*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f7fc;
            color: #1a2634;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #0d4b6e;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a2a, #132b3f);
            color: #fff;
            padding: 1rem 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;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: #facc15;
            font-size: 2rem;
        }
        .my-logo span {
            background: linear-gradient(135deg, #facc15, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.92;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #e2e8f0;
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s ease;
        }
        .nav-menu a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #facc15;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 0.35rem;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            color: #4a5a6a;
            border-bottom: 1px solid #dce1e8;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.3rem;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb a:hover {
            color: #0d4b6e;
        }
        .breadcrumb .separator {
            margin: 0 0.25rem;
            color: #8a9aa8;
        }
        .breadcrumb .current {
            color: #2c3e50;
            font-weight: 600;
        }
        main {
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: #fff;
            border-radius: 20px;
            padding: 2rem 2.2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        article h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0b1a2a;
            margin-bottom: 0.75rem;
        }
        article h1 i {
            color: #facc15;
            margin-right: 0.5rem;
        }
        .last-updated {
            display: inline-block;
            background: #eef3f8;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #4a6a7a;
            margin-bottom: 1.5rem;
        }
        .last-updated i {
            margin-right: 0.4rem;
        }
        article h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #0f2a3f;
            margin-top: 2.5rem;
            margin-bottom: 0.8rem;
            border-left: 5px solid #facc15;
            padding-left: 1rem;
        }
        article h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #1a3a4f;
            margin-top: 1.8rem;
            margin-bottom: 0.5rem;
        }
        article h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #2a4a5f;
            margin-top: 1.2rem;
            margin-bottom: 0.3rem;
        }
        article p {
            margin-bottom: 1rem;
            color: #2c3e4e;
        }
        article .feature-img {
            margin: 1.5rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .highlight-box {
            background: #f0f6fe;
            border-left: 5px solid #1e6f9f;
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .highlight-box i {
            color: #1e6f9f;
            margin-right: 0.5rem;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: #f8fafc;
            padding: 1rem;
            border-radius: 12px;
            text-align: center;
            border: 1px solid #e2e8f0;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
        }
        .stat-card .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0b1a2a;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #5a7a8a;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .sidebar-widget {
            background: #fff;
            border-radius: 16px;
            padding: 1.4rem 1.5rem;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.04);
        }
        .sidebar-widget h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #0b1a2a;
            margin-bottom: 0.8rem;
            border-bottom: 2px solid #facc15;
            padding-bottom: 0.4rem;
        }
        .sidebar-widget ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-widget ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f2f5;
        }
        .sidebar-widget ul li:last-child {
            border-bottom: none;
        }
        .sidebar-widget ul li a {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-widget ul li a i {
            color: #facc15;
            font-size: 0.75rem;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #dce1e8;
            border-radius: 30px;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.3s ease;
        }
        .search-form input[type="text"]:focus {
            border-color: #1e6f9f;
        }
        .search-form button {
            background: #1e6f9f;
            color: #fff;
            border: none;
            padding: 0.7rem 1.3rem;
            border-radius: 30px;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.25s ease;
        }
        .search-form button:hover {
            background: #0d4b6e;
        }
        .comment-area,
        .rating-area {
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 2px solid #e9edf2;
        }
        .comment-area h3,
        .rating-area h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #0b1a2a;
            margin-bottom: 1rem;
        }
        .comment-form textarea,
        .rating-form select,
        .rating-form input[type="number"] {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #dce1e8;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.3s ease;
            background: #fafcff;
        }
        .comment-form textarea:focus,
        .rating-form select:focus,
        .rating-form input[type="number"]:focus {
            border-color: #1e6f9f;
            outline: none;
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        .comment-form .btn,
        .rating-form .btn {
            background: #1e6f9f;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.15s ease;
            margin-top: 0.6rem;
        }
        .comment-form .btn:hover,
        .rating-form .btn:hover {
            background: #0d4b6e;
            transform: scale(1.02);
        }
        .rating-form .stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #dce1e8;
            cursor: pointer;
            margin: 0.5rem 0;
        }
        .rating-form .stars i.active {
            color: #facc15;
        }
        .rating-form .stars i:hover {
            color: #facc15;
        }
        .site-footer {
            background: #0b1a2a;
            color: #cbd5e1;
            padding: 2.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 0.8rem;
            border-bottom: 2px solid #facc15;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        .site-footer a {
            color: #9ab0c4;
            font-size: 0.9rem;
        }
        .site-footer a:hover {
            color: #facc15;
            text-decoration: none;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        .footer-links ul li {
            padding: 0.25rem 0;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 0.8rem 1rem;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
        }
        friend-link a {
            margin: 0 0.5rem 0 0;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: #7a95aa;
        }
        .copyright i {
            color: #facc15;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0f2538;
                padding: 1rem 0.5rem;
                border-radius: 12px;
                margin-top: 0.8rem;
                gap: 0.2rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.6rem 1rem;
                width: 100%;
                border-radius: 8px;
            }
            article {
                padding: 1.5rem 1rem;
            }
            article h1 {
                font-size: 1.7rem;
            }
            article h2 {
                font-size: 1.35rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .header-inner {
                gap: 0.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .sidebar {
                margin-top: 1rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.75rem;
            }
            article h1 {
                font-size: 1.4rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #1e6f9f;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            z-index: 999;
        }
        .scroll-top:hover {
            background: #0d4b6e;
            transform: translateY(-4px);
        }
        @media (max-width: 480px) {
            .scroll-top {
                bottom: 1.2rem;
                right: 1.2rem;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }