*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a2a6c;
            --secondary: #b21f1f;
            --accent: #fdbb2d;
            --light: #f8f9fa;
            --dark: #212529;
            --text: #2d2d2d;
            --gray: #6c757d;
            --border: #dee2e6;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            --radius: 12px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f5f7fb;
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, #0d1b3e 100%);
            color: #fff;
            padding: 0 0 4px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            background: linear-gradient(135deg, var(--accent), #ff8a00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 12px rgba(253, 187, 45, 0.3);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--accent);
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: rgba(255, 255, 255, 0.85);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .nav-list li a.active {
            background: var(--accent);
            color: var(--dark);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #fff;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px 8px;
            transition: 0.2s;
        }
        .hamburger:hover {
            opacity: 0.7;
        }
        .breadcrumb {
            background: #fff;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 6px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        .main-content {
            padding: 32px 0 48px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .article-body h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .article-body .meta {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .article-body .meta .updated {
            background: var(--accent);
            color: var(--dark);
            padding: 2px 14px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .article-body .featured-image {
            margin: 24px 0 32px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-body .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body .featured-image figcaption {
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 8px;
            text-align: center;
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--primary);
            border-left: 6px solid var(--accent);
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin: 32px 0 12px;
            color: #1a2a6c;
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 24px 0 8px;
            color: #2d2d2d;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: var(--text);
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 28px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .article-body .highlight-box {
            background: linear-gradient(135deg, #fff9e6, #fff3cd);
            border-left: 6px solid var(--accent);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .article-body .highlight-box strong {
            color: var(--secondary);
        }
        .article-body .pro-tip {
            background: #e8f0fe;
            border-left: 6px solid #1a73e8;
            padding: 18px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .article-body .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .article-body .stat-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px 16px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-body .stat-card .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
        .article-body .stat-card .label {
            font-size: 0.9rem;
            color: var(--gray);
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-widget {
            background: #fff;
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .sidebar-widget h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--primary);
            border-bottom: 2px solid var(--accent);
            padding-bottom: 8px;
        }
        .sidebar-widget ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-widget ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-widget ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
        }
        .sidebar-widget ul li a i {
            color: var(--accent);
            width: 20px;
        }
        .search-form {
            display: flex;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.25s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 18px;
            cursor: pointer;
            transition: 0.25s;
            font-size: 1rem;
        }
        .search-form button:hover {
            background: #0d1b3e;
        }
        .feedback-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid var(--border);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.95rem;
            resize: vertical;
            min-height: 120px;
            font-family: inherit;
            transition: 0.25s;
        }
        .comment-box textarea:focus {
            border-color: var(--primary);
            outline: none;
        }
        .comment-box input[type="text"] {
            width: 100%;
            padding: 10px 16px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 0.95rem;
            margin: 8px 0 12px;
            transition: 0.25s;
        }
        .comment-box input[type="text"]:focus {
            border-color: var(--primary);
            outline: none;
        }
        .comment-box .btn {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 28px;
            border-radius: 30px;
            cursor: pointer;
            font-weight: 600;
            transition: 0.25s;
        }
        .comment-box .btn:hover {
            background: #0d1b3e;
            transform: translateY(-2px);
        }
        .rating-box .stars {
            display: flex;
            gap: 8px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            margin: 12px 0;
        }
        .rating-box .stars i.active {
            color: var(--accent);
        }
        .rating-box .stars i:hover {
            color: var(--accent);
            transform: scale(1.1);
        }
        .rating-box .btn {
            background: var(--accent);
            color: var(--dark);
            border: none;
            padding: 10px 28px;
            border-radius: 30px;
            cursor: pointer;
            font-weight: 700;
            transition: 0.25s;
        }
        .rating-box .btn:hover {
            background: #f0a500;
            transform: translateY(-2px);
        }
        .rating-box .rating-info {
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 8px;
        }
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 40px 0 24px;
            margin-top: 48px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-inner h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 6px;
            display: inline-block;
        }
        .footer-inner p {
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
        }
        .footer-inner ul li {
            padding: 4px 0;
        }
        .footer-inner ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: 0.2s;
        }
        .footer-inner ul li a:hover {
            color: var(--accent);
        }
        friend-link {
            display: block;
            margin-top: 12px;
            font-size: 0.9rem;
        }
        friend-link a {
            color: var(--accent);
            margin-right: 12px;
        }
        .copyright {
            text-align: center;
            padding-top: 28px;
            margin-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 12px 16px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(13, 27, 62, 0.98);
                padding: 16px 0;
                border-radius: 0 0 var(--radius) var(--radius);
                margin-top: 12px;
                gap: 4px;
            }
            .nav-list.show {
                display: flex;
            }
            .nav-list li a {
                padding: 12px 20px;
                border-radius: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .hamburger {
                display: block;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-body h1 {
                font-size: 1.5rem;
            }
            .article-body p {
                font-size: 0.98rem;
            }
            .rating-box .stars {
                font-size: 1.6rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .flex {
            display: flex;
        }
        .gap-2 {
            gap: 12px;
        }
        .items-center {
            align-items: center;
        }