* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a3a5c;
            --secondary: #e85d3a;
            --accent: #f9c74f;
            --bg: #f4f7fb;
            --text: #1e2a3a;
            --light: #ffffff;
            --gray: #6b7a8a;
            --border: #dce3ed;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --radius: 12px;
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #c64d2e;
            text-decoration: underline;
        }
        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: var(--light);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 1.8rem;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--gray);
            display: block;
            line-height: 1.2;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
        }
        .nav-list li a {
            padding: 8px 14px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text);
            transition: all 0.2s;
            white-space: nowrap;
        }
        .nav-list li a:hover,
        .nav-list li a.active {
            background: var(--primary);
            color: var(--light);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }
        .breadcrumb {
            background: var(--light);
            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: 0 8px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }
        main {
            padding: 30px 0 60px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content h1 {
            font-size: 2.4rem;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 12px;
            font-weight: 800;
        }
        .article-content h1 i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .meta-info i {
            margin-right: 4px;
        }
        .last-updated {
            font-weight: 600;
            color: var(--primary);
        }
        .article-content h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--accent);
            font-weight: 700;
        }
        .article-content h3 {
            font-size: 1.3rem;
            color: var(--secondary);
            margin: 28px 0 12px;
            font-weight: 600;
        }
        .article-content h4 {
            font-size: 1.05rem;
            color: var(--text);
            margin: 20px 0 8px;
            font-weight: 600;
        }
        .article-content p {
            margin-bottom: 16px;
            text-align: justify;
        }
        .article-content ul,
        .article-content ol {
            margin: 12px 0 20px 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content .highlight {
            background: #fef9e7;
            padding: 4px 10px;
            border-radius: 6px;
            font-weight: 600;
        }
        .article-content .emoji-big {
            font-size: 1.8rem;
            margin-right: 6px;
        }
        .article-content .insight-box {
            background: var(--light);
            border-left: 5px solid var(--secondary);
            padding: 18px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-content .insight-box strong {
            color: var(--primary);
        }
        .article-content .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .article-content .stat-card {
            background: var(--light);
            padding: 20px;
            border-radius: var(--radius);
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-content .stat-card .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
        }
        .article-content .stat-card .label {
            font-size: 0.9rem;
            color: var(--gray);
        }
        .article-content .image-wrap {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--light);
        }
        .article-content .image-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }
        .article-content .image-wrap figcaption {
            padding: 12px 16px;
            font-size: 0.85rem;
            color: var(--gray);
            background: var(--light);
            border-top: 1px solid var(--border);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.95rem;
            background: var(--light);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-content th {
            background: var(--primary);
            color: var(--light);
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .article-content td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--border);
        }
        .article-content tr:last-child td {
            border-bottom: none;
        }
        .article-content tr:hover td {
            background: #f0f4fa;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--light);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-bottom: 12px;
            font-weight: 700;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 8px;
        }
        .sidebar-card li a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }
        .sidebar-card li a i {
            color: var(--secondary);
            width: 16px;
        }
        .search-form {
            display: flex;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 30px;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: var(--light);
            border: none;
            border-radius: 30px;
            padding: 10px 18px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #0f2a44;
        }
        .comment-area,
        .rating-area {
            margin: 40px 0;
            padding: 28px;
            background: var(--light);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .comment-area h3,
        .rating-area h3 {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comment-area textarea {
            width: 100%;
            padding: 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font);
            resize: vertical;
            min-height: 100px;
            outline: none;
            transition: border 0.2s;
        }
        .comment-area textarea:focus {
            border-color: var(--primary);
        }
        .comment-area .form-row {
            display: flex;
            gap: 12px;
            margin-top: 12px;
            flex-wrap: wrap;
        }
        .comment-area .form-row input {
            flex: 1;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.9rem;
            outline: none;
            min-width: 160px;
        }
        .comment-area .form-row input:focus {
            border-color: var(--primary);
        }
        .comment-area .btn-submit,
        .rating-area .btn-submit {
            background: var(--secondary);
            color: var(--light);
            border: none;
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.95rem;
        }
        .comment-area .btn-submit:hover,
        .rating-area .btn-submit:hover {
            background: #c64d2e;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin: 12px 0;
        }
        .rating-stars i.active {
            color: var(--accent);
        }
        .rating-stars i:hover,
        .rating-stars i.hover {
            color: #f5b942;
        }
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-inner h4 {
            color: var(--accent);
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .footer-inner p,
        .footer-inner li {
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
        }
        .footer-inner li {
            margin-bottom: 6px;
        }
        .footer-inner a {
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-inner a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin-top: 28px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom .copyright {
            margin-top: 6px;
        }
        .friend-link {
            display: block;
            padding: 6px 0;
        }
        .friend-link a {
            color: rgba(255, 255, 255, 0.85);
        }
        .friend-link a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--light);
                padding: 16px 20px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
                border-radius: 0 0 var(--radius) var(--radius);
                gap: 4px;
                z-index: 99;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 10px 14px;
                font-size: 1rem;
                white-space: normal;
            }
            .hamburger {
                display: block;
            }
            .article-content h1 {
                font-size: 1.7rem;
            }
            .article-content h2 {
                font-size: 1.4rem;
            }
            .article-content h3 {
                font-size: 1.15rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 6px 0;
            }
            .main-grid {
                gap: 24px;
            }
            .comment-area,
            .rating-area {
                padding: 18px;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-content h1 {
                font-size: 1.4rem;
            }
            .meta-info {
                font-size: 0.8rem;
                gap: 8px;
            }
            .article-content .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .article-content table {
                font-size: 0.8rem;
            }
            .article-content th,
            .article-content td {
                padding: 8px 10px;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .fw-bold {
            font-weight: 700;
        }
        .color-secondary {
            color: var(--secondary);
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }