*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7fb;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0f4c81;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #d4af37;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            color: #0b1e33;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 1.2rem;
            border-left: 6px solid #d4af37;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid #0f4c81;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.15rem;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2c4a6e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1e33 0%, #1a3a5c 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: 2px;
            text-transform: uppercase;
            background: linear-gradient(135deg, #d4af37, #f5d77b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 12px rgba(212, 175, 55, 0.3);
            transition: transform 0.2s;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #d4af37;
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.2rem 1.2rem;
        }
        .main-nav a {
            color: #e0e9f5;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
        }
        .main-nav a:hover {
            color: #d4af37;
            border-bottom-color: #d4af37;
            text-decoration: none;
        }
        .main-nav .nav-active {
            color: #d4af37;
            border-bottom-color: #d4af37;
        }
        .breadcrumb-wrap {
            background: #eaeff5;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0dae8;
        }
        .breadcrumb-wrap .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb-wrap .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.4rem 0 0.2rem;
            color: #7a8ba8;
        }
        .breadcrumb-wrap .breadcrumb a {
            color: #0f4c81;
        }
        .breadcrumb-wrap .breadcrumb .current {
            color: #4a5b73;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #0b1e33 0%, #1e3a5f 100%);
            color: #fff;
            padding: 2.8rem 0 2.2rem;
            margin-bottom: 2rem;
            border-bottom: 4px solid #d4af37;
        }
        .hero h1 {
            color: #fff;
            border-left-color: #d4af37;
            font-size: 2.6rem;
            margin-bottom: 0.8rem;
        }
        .hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem 2.5rem;
            font-size: 0.95rem;
            color: #b8cde0;
            margin-top: 0.3rem;
        }
        .hero .meta i {
            color: #d4af37;
            margin-right: 6px;
        }
        .hero .last-updated {
            background: rgba(212, 175, 55, 0.18);
            padding: 0.3rem 1rem;
            border-radius: 40px;
            display: inline-block;
            font-size: 0.9rem;
            border: 1px solid rgba(212, 175, 55, 0.3);
            margin-top: 0.8rem;
        }
        .search-section {
            background: #fff;
            padding: 1.6rem 0;
            border-radius: 12px;
            margin-bottom: 2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
        }
        .search-section .search-form {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
            max-width: 640px;
            margin: 0 auto;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 0.75rem 1.2rem;
            border: 2px solid #d0dae8;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-section input[type="text"]:focus {
            border-color: #0f4c81;
        }
        .search-section button {
            background: #0f4c81;
            color: #fff;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-section button:hover {
            background: #1a5a94;
            transform: scale(1.02);
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 900px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: #fff;
            padding: 2rem 2.2rem;
            border-radius: 14px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .article-content .featured-img {
            margin: 1.2rem 0 2rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
        }
        .article-content .featured-img img {
            width: 100%;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.6rem;
            margin-bottom: 1.6rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 1rem;
            border-bottom: 2px solid #eaeff5;
            padding-bottom: 0.6rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f3f8;
        }
        .sidebar-card ul li a {
            font-weight: 500;
            display: block;
        }
        .sidebar-card ul li a:hover {
            padding-left: 4px;
        }
        .interaction-box {
            background: #fff;
            border-radius: 14px;
            padding: 2rem 2.2rem;
            margin: 2.5rem 0;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .interaction-box h2 {
            margin-top: 0;
        }
        .rating-stars {
            display: flex;
            gap: 0.4rem;
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            margin: 0.8rem 0 1.2rem;
            flex-wrap: wrap;
        }
        .rating-stars i {
            transition: color 0.15s, transform 0.1s;
        }
        .rating-stars i:hover,
        .rating-stars i.hovered {
            color: #d4af37;
            transform: scale(1.15);
        }
        .rating-stars i.selected {
            color: #d4af37;
        }
        .rating-form button,
        .comment-form button {
            background: #0f4c81;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.95rem;
        }
        .rating-form button:hover,
        .comment-form button:hover {
            background: #1a5a94;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.9rem 1.2rem;
            border: 2px solid #d0dae8;
            border-radius: 12px;
            font-size: 1rem;
            resize: vertical;
            min-height: 100px;
            font-family: inherit;
            transition: border 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #0f4c81;
            outline: none;
        }
        .comment-form .field-group {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0;
        }
        .comment-form .field-group input {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1.2rem;
            border: 2px solid #d0dae8;
            border-radius: 40px;
            font-size: 0.95rem;
            transition: border 0.2s;
        }
        .comment-form .field-group input:focus {
            border-color: #0f4c81;
            outline: none;
        }
        .site-footer {
            background: #0b1e33;
            color: #b8cde0;
            padding: 2.5rem 0 1.8rem;
            margin-top: 3rem;
            border-top: 4px solid #d4af37;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h4 {
            color: #d4af37;
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 1px solid #2a4a6a;
            padding-bottom: 0.5rem;
        }
        .site-footer a {
            color: #b8cde0;
        }
        .site-footer a:hover {
            color: #d4af37;
        }
        .site-footer .friend-link {
            display: block;
            padding: 0.3rem 0;
        }
        .site-footer .copyright {
            text-align: center;
            border-top: 1px solid #2a4a6a;
            padding-top: 1.5rem;
            font-size: 0.9rem;
            color: #7a8ba8;
        }
        .site-footer .copyright strong {
            color: #d4af37;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.4rem;
                gap: 0.3rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 0.5rem 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .article-content {
                padding: 1.2rem 1rem;
            }
            .interaction-box {
                padding: 1.2rem 1rem;
            }
            .search-section .search-form {
                flex-direction: column;
                align-items: stretch;
            }
            .search-section button {
                justify-content: center;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .breadcrumb-wrap {
                font-size: 0.8rem;
            }
        }
        .highlight-box {
            background: #f0f6ff;
            border-left: 5px solid #0f4c81;
            padding: 1.2rem 1.6rem;
            border-radius: 0 10px 10px 0;
            margin: 1.5rem 0;
        }
        .highlight-box.gold {
            border-left-color: #d4af37;
            background: #fcf8ee;
        }
        .emoji-lg {
            font-size: 1.4em;
            margin-right: 4px;
        }
        .tag {
            display: inline-block;
            background: #eaeff5;
            color: #0f4c81;
            padding: 0.2rem 0.9rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-right: 0.4rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .table-wrap th,
        .table-wrap td {
            padding: 0.7rem 0.9rem;
            border: 1px solid #d0dae8;
            text-align: left;
        }
        .table-wrap th {
            background: #0f4c81;
            color: #fff;
            font-weight: 600;
        }
        .table-wrap tr:nth-child(even) {
            background: #f8faff;
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #0f4c81;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: all 0.2s;
            border: none;
            z-index: 999;
            opacity: 0.9;
        }
        .scroll-top:hover {
            background: #d4af37;
            transform: scale(1.08);
            opacity: 1;
        }