*,
        *::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: 1.8;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a56db;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6f00;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            color: #0f1b3d;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 1rem;
        }
        h2 {
            font-size: 1.9rem;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid #ff6f00;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 2.2rem;
            margin-bottom: 0.8rem;
            color: #1a3a6b;
        }
        h4 {
            font-size: 1.25rem;
            margin-top: 1.6rem;
            margin-bottom: 0.6rem;
            color: #2d4a7a;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0f1b3d 0%, #1a3a6b 100%);
            color: #fff;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            color: #ffcc00;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 8px rgba(255, 204, 0, 0.2);
            transition: transform 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 2rem;
            color: #ff6f00;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #ffcc00;
        }
        .my-logo span {
            font-weight: 300;
            color: #b0c4de;
            font-size: 0.9rem;
            display: block;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            padding: 0;
            margin: 0;
        }
        .nav-list li a {
            color: #e0e8f5;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list li a:hover,
        .nav-list li a.active {
            background: rgba(255, 255, 255, 0.12);
            color: #ffcc00;
            text-decoration: none;
        }
        .nav-list li a i {
            font-size: 0.8rem;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 6px;
            z-index: 1100;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #ffcc00;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .breadcrumb-wrap {
            background: #e8edf5;
            padding: 10px 0;
            border-bottom: 1px solid #d0dae8;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 6px 12px;
            padding: 0;
            margin: 0;
            font-size: 0.85rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #888;
            font-size: 1.1rem;
            margin-right: 6px;
        }
        .breadcrumb a {
            color: #1a56db;
        }
        .breadcrumb .current {
            color: #555;
            font-weight: 600;
        }
        main {
            padding: 30px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body {
            background: #fff;
            border-radius: 20px;
            padding: 35px 40px;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
        }
        .article-body .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: #666;
            margin-bottom: 1.8rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eef2f7;
        }
        .article-body .meta-info i {
            margin-right: 6px;
            color: #ff6f00;
        }
        .featured-image {
            margin: 1.8rem 0 2.2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .featured-image figcaption {
            background: #f0f4fa;
            padding: 10px 18px;
            font-size: 0.85rem;
            color: #555;
            font-style: italic;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 22px 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 1rem;
            color: #0f1b3d;
            border-left: 4px solid #ff6f00;
            padding-left: 12px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f0f2f5;
            margin: 0;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.92rem;
        }
        .sidebar-card ul li a i {
            color: #ff6f00;
            font-size: 0.7rem;
        }
        .search-box {
            display: flex;
            gap: 8px;
        }
        .search-box input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #dde3ed;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
            background: #f8faff;
        }
        .search-box input:focus {
            border-color: #ff6f00;
        }
        .search-box button {
            padding: 12px 22px;
            background: #ff6f00;
            color: #fff;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-box button:hover {
            background: #e65c00;
        }
        .feedback-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #eef2f7;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #dde3ed;
            border-radius: 16px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 120px;
            font-family: inherit;
            transition: border 0.2s;
            background: #f8faff;
        }
        .comment-box textarea:focus {
            border-color: #ff6f00;
            outline: none;
        }
        .comment-box button,
        .rating-box button {
            padding: 12px 30px;
            background: #0f1b3d;
            color: #fff;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.95rem;
            margin-top: 10px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #1a3a6b;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin: 10px 0;
        }
        .star-rating i {
            transition: color 0.15s, transform 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #ffb300;
            transform: scale(1.1);
        }
        .star-rating i.selected {
            color: #ffb300;
        }
        footer {
            background: #0f1b3d;
            color: #c8d6e5;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        footer .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        footer h4 {
            color: #ffcc00;
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid rgba(255, 204, 0, 0.2);
            padding-bottom: 8px;
            display: inline-block;
        }
        footer a {
            color: #b0c4de;
        }
        footer a:hover {
            color: #ffcc00;
        }
        friend-link {
            display: block;
            margin-top: 10px;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 0;
            padding: 4px 0;
            font-size: 0.9rem;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 28px;
            margin-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: #8899b4;
        }
        .copyright i {
            color: #ff6f00;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            html {
                font-size: 15px;
            }
            .header-inner {
                padding: 12px 16px;
            }
            .hamburger {
                display: flex;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #0f1b3d;
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
                border-top: 1px solid rgba(255, 255, 255, 0.05);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 12px 16px;
                border-radius: 10px;
                font-size: 1rem;
            }
            .article-body {
                padding: 20px 18px;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo span {
                font-size: 0.7rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
                gap: 4px 8px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-body {
                padding: 16px 14px;
            }
            h1 {
                font-size: 1.6rem;
            }
            .search-box {
                flex-direction: column;
            }
            .search-box button {
                justify-content: center;
            }
        }
        .highlight-box {
            background: #f0f7ff;
            border-left: 5px solid #ff6f00;
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
        }
        .highlight-box strong {
            color: #0f1b3d;
        }
        .tip-badge {
            display: inline-block;
            background: #ff6f00;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }
        table th {
            background: #0f1b3d;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        table td {
            padding: 10px 16px;
            border-bottom: 1px solid #e8ecf3;
        }
        table tr:nth-child(even) {
            background: #f8faff;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .text-muted {
            color: #777;
            font-size: 0.9rem;
        }
        .mt-2 {
            margin-top: 1.2rem;
        }
        .mb-1 {
            margin-bottom: 0.6rem;
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .align-center {
            align-items: center;
        }