*,
        *::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: #f8f9fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0a4b7a;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #c0392b;
            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: #0b2a40;
        }
        h1 {
            font-size: 2.4rem;
            border-left: 6px solid #c0392b;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid #e0e7ef;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e4a6b;
        }
        h4 {
            font-size: 1.15rem;
            color: #2c5f7e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(145deg, #0b2a40 0%, #1a4b6d 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0.4rem 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7d94e, #f0a500);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #f7d94e;
            font-size: 1.6rem;
        }
        .my-logo a {
            color: inherit;
            -webkit-text-fill-color: inherit;
            background: none;
            text-decoration: none;
        }
        .my-logo a:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        nav.main-nav ul {
            list-style: none;
            display: flex;
            gap: 0.2rem;
            padding: 0;
            margin: 0;
            align-items: center;
        }
        nav.main-nav ul li a {
            color: #eef5fa;
            padding: 0.6rem 1rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: background 0.25s, color 0.25s;
            display: block;
        }
        nav.main-nav ul li a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #f7d94e;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .breadcrumb {
            background: #eef3f8;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce4ec;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #7f8c9b;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #0a4b7a;
        }
        .breadcrumb .current {
            color: #5d6d7e;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(135deg, #e8edf5 0%, #d4dee9 100%);
            padding: 2.5rem 0 2rem;
            text-align: center;
            border-bottom: 1px solid #cdd9e6;
        }
        .hero h1 {
            border-left: none;
            padding-left: 0;
            margin-top: 0.2rem;
            font-size: 2.6rem;
        }
        .hero .subhead {
            font-size: 1.15rem;
            color: #2c506a;
            max-width: 760px;
            margin: 0.6rem auto 1.2rem;
        }
        .hero .meta-info {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: #3d5a73;
        }
        .hero .meta-info i {
            margin-right: 0.4rem;
            color: #c0392b;
        }
        .search-section {
            background: #fff;
            padding: 1.6rem 0;
            border-bottom: 1px solid #e2e9f0;
        }
        .search-form {
            display: flex;
            max-width: 620px;
            margin: 0 auto;
            border-radius: 60px;
            overflow: hidden;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
            border: 1px solid #d0dce8;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 0.9rem 1.4rem;
            border: none;
            outline: none;
            font-size: 1rem;
            background: #fafcff;
            min-width: 0;
        }
        .search-form button {
            background: #0a4b7a;
            color: #fff;
            border: none;
            padding: 0 2rem;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #133e5e;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        .article-body {
            background: #fff;
            border-radius: 20px;
            padding: 2.2rem 2.5rem;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            background: #fff;
            border-radius: 20px;
            padding: 2rem 1.8rem;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.04);
            align-self: start;
            position: sticky;
            top: 90px;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            margin-top: 0.2rem;
            border-bottom: 2px solid #e8eef5;
            padding-bottom: 0.6rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            padding: 0.5rem 0;
            border-bottom: 1px solid #f0f4fa;
        }
        .sidebar ul li a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .sidebar ul li a i {
            color: #c0392b;
            width: 1.2rem;
        }
        .featured-figure {
            margin: 2rem 0 1.8rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }
        .featured-figure figcaption {
            background: #f1f6fc;
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #2f4a62;
            font-style: italic;
        }
        .highlight-box {
            background: #f0f7fe;
            border-left: 5px solid #c0392b;
            padding: 1.4rem 2rem;
            border-radius: 0 16px 16px 0;
            margin: 1.8rem 0;
        }
        .highlight-box strong {
            color: #0b2a40;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.8rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e6edf5;
        }
        th {
            background: #0b2a40;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:nth-child(even) td {
            background: #f7faff;
        }
        .rating-area,
        .comment-area {
            margin-top: 2.8rem;
            padding-top: 2rem;
            border-top: 2px solid #e8eef5;
        }
        .rating-area h3,
        .comment-area h3 {
            margin-top: 0;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            margin: 0.6rem 0 1rem;
            flex-wrap: wrap;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f5b342;
            transform: scale(1.12);
        }
        .rating-form button,
        .comment-form button {
            background: #0a4b7a;
            color: #fff;
            border: none;
            padding: 0.7rem 2.2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
        }
        .rating-form button:hover,
        .comment-form button:hover {
            background: #133e5e;
            transform: translateY(-2px);
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid #d0dce8;
            border-radius: 16px;
            font-family: inherit;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 110px;
            background: #fafcff;
            transition: border 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #0a4b7a;
            outline: none;
            box-shadow: 0 0 0 3px rgba(10, 75, 122, 0.12);
        }
        .comment-form input[type="text"] {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #d0dce8;
            border-radius: 12px;
            font-size: 0.95rem;
            background: #fafcff;
            margin-bottom: 0.8rem;
        }
        .comment-form input[type="text"]:focus {
            border-color: #0a4b7a;
            outline: none;
            box-shadow: 0 0 0 3px rgba(10, 75, 122, 0.12);
        }
        footer {
            background: #0b2a40;
            color: #d4e2ed;
            padding: 2.5rem 0 1.2rem;
            margin-top: 2.5rem;
        }
        footer a {
            color: #b4d4ea;
        }
        footer a:hover {
            color: #f7d94e;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 1.8rem;
            border-bottom: 1px solid #1e4a6b;
        }
        .footer-grid h4 {
            color: #f0f6fc;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
        }
        .footer-grid ul li {
            padding: 0.25rem 0;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            padding-top: 1.2rem;
            font-size: 0.9rem;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            padding: 0.8rem 0;
            font-weight: 500;
        }
        friend-link a {
            color: #b4d4ea;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        friend-link a:hover {
            color: #f7d94e;
        }
        .copyright {
            font-size: 0.88rem;
            color: #8ba5bc;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .article-body {
                order: 1;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav.main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0b2a40;
                padding: 1rem 0;
                border-radius: 0 0 20px 20px;
                gap: 0;
            }
            nav.main-nav ul.show {
                display: flex;
            }
            nav.main-nav ul li a {
                padding: 0.8rem 1.6rem;
                border-radius: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .article-body {
                padding: 1.5rem 1.2rem;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero .meta-info {
                flex-direction: column;
                gap: 0.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
            friend-link {
                justify-content: center;
            }
            .search-form button span {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-body {
                padding: 1.2rem 0.8rem;
            }
            .sidebar {
                padding: 1.2rem;
            }
            .star-rating {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.2rem;
            }
        }
        .tag {
            display: inline-block;
            background: #e8eef5;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #1e4a6b;
            font-weight: 600;
            margin-right: 0.4rem;
        }
        .emoji-big {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #eef3f8;
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #2c506a;
        }