*,
        *::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: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0a66c2;
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }
        a:hover {
            color: #064079;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0b1c2c;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 0.8rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.4rem;
            margin-bottom: 0.6rem;
            border-left: 5px solid #e63946;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 1.8rem;
            margin-bottom: 0.4rem;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.2rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1c2c 0%, #1a3a4a 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: #f9c74f;
            font-size: 2rem;
        }
        .my-logo:hover {
            color: #f9c74f;
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            color: #a8d5e2;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
        }
        .nav-menu {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #e0eef7;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        .nav-menu a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f9c74f;
            text-decoration: none;
        }
        .nav-menu a.active {
            background: #e63946;
            color: #fff;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #dce3ec;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #7a8a9e;
            margin-right: 0.4rem;
        }
        .breadcrumb a {
            color: #2a5c8a;
        }
        .breadcrumb .current {
            color: #4a5a6e;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #0f2a3a, #1d4d5e);
            color: #fff;
            padding: 3rem 0 2.5rem;
            margin-bottom: 2rem;
            border-radius: 0 0 40px 40px;
        }
        .hero h1 {
            color: #fff;
            font-size: 2.8rem;
            max-width: 800px;
        }
        .hero p {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 720px;
            margin-top: 0.5rem;
        }
        .hero .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1.2rem;
            font-size: 0.95rem;
            color: #b8d4e0;
        }
        .hero .meta-info i {
            margin-right: 0.4rem;
            color: #f9c74f;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background: #fff;
            border-radius: 24px;
            padding: 2rem 2.2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background: #fff;
            border-radius: 24px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #e63946;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            margin-bottom: 0.5rem;
        }
        .sidebar a {
            display: block;
            padding: 0.4rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .sidebar a:hover {
            background: #f0f4fa;
            text-decoration: none;
        }
        .feature-box {
            background: #f0f6fe;
            border-left: 4px solid #e63946;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .feature-box h4 {
            margin-top: 0;
        }
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 1rem;
            margin: 1.8rem 0;
        }
        .stat-card {
            background: #f4f7fb;
            padding: 1rem;
            border-radius: 16px;
            text-align: center;
            border: 1px solid #e2e9f0;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #e63946;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #4a5a6e;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            min-width: 600px;
        }
        th,
        td {
            padding: 0.75rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e2e9f0;
        }
        th {
            background: #0b1c2c;
            color: #fff;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: #f8fafc;
        }
        tr:hover {
            background: #edf3fa;
        }
        .search-section {
            background: #eef3f9;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            margin: 2rem 0;
        }
        .search-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #d0dbe8;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input[type="text"]:focus {
            border-color: #e63946;
        }
        .search-form button {
            background: #e63946;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-form button:hover {
            background: #c1121f;
            transform: scale(1.02);
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 700px) {
            .interact-grid {
                grid-template-columns: 1fr;
            }
        }
        .comment-box,
        .rating-box {
            background: #f8fafc;
            border-radius: 20px;
            padding: 1.5rem;
            border: 1px solid #e2e9f0;
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
        }
        .comment-box textarea,
        .rating-box textarea {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #d0dbe8;
            border-radius: 12px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 80px;
            font-family: inherit;
        }
        .comment-box input,
        .rating-box input {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #d0dbe8;
            border-radius: 12px;
            font-size: 0.95rem;
            margin-bottom: 0.8rem;
        }
        .comment-box button,
        .rating-box button {
            background: #0a66c2;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.95rem;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #064079;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 1.6rem;
            margin: 0.6rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #ccc;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f9c74f;
        }
        .site-footer {
            background: #0b1c2c;
            color: #cbdae6;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
            border-radius: 40px 40px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }
        .footer-inner h4 {
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .footer-inner a {
            color: #a8c5d9;
        }
        .footer-inner a:hover {
            color: #f9c74f;
        }
        friend-link {
            display: block;
            margin-top: 0.5rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.3rem;
        }
        .copyright {
            border-top: 1px solid #1f3a4a;
            padding-top: 1.2rem;
            margin-top: 1.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: #8da3b8;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #0f2a3a;
                padding: 1rem 0.5rem;
                border-radius: 16px;
                margin-top: 0.5rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.6rem 1rem;
                width: 100%;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .article-body {
                padding: 1.2rem;
            }
            .sidebar {
                position: static;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .hero {
                padding: 2rem 0 1.5rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .search-form button {
                padding: 0.7rem 1.2rem;
                font-size: 0.9rem;
            }
        }
        .author-bio {
            background: #f0f4fa;
            border-radius: 16px;
            padding: 1.2rem 1.5rem;
            display: flex;
            gap: 1rem;
            align-items: center;
            flex-wrap: wrap;
            margin: 1.8rem 0;
        }
        .author-bio img {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            object-fit: cover;
        }
        .author-bio .info {
            flex: 1;
        }
        .author-bio .name {
            font-weight: 700;
            font-size: 1.1rem;
        }
        .author-bio .title {
            color: #4a5a6e;
            font-size: 0.9rem;
        }
        .img-wrap {
            margin: 1.8rem 0;
        }
        .img-wrap figcaption {
            font-size: 0.85rem;
            color: #5a6a7e;
            margin-top: 0.5rem;
            text-align: center;
            font-style: italic;
        }
        .btn-icon {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .highlight {
            background: #fcf4d9;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
        }