*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a4b8c;
            --primary-light: #2a6bc8;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --border: #e2e8f0;
            --success: #10b981;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--light);
            color: var(--dark);
            line-height: 1.75;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, #0c2e5e 100%);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 2rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            transition: var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.03);
            color: var(--accent);
        }
        .my-logo i {
            color: var(--accent);
            font-size: 2rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
            align-items: center;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 0.8rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--accent);
            background: rgba(255, 255, 255, 0.1);
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.3rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 0.8rem 0;
            font-size: 0.85rem;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary-light);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: var(--gray);
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(135deg, #f59e0b 0%, #d97706 50%, #92400e 100%);
            color: #fff;
            padding: 3rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: "🏏";
            font-size: 15rem;
            position: absolute;
            right: -3rem;
            bottom: -4rem;
            opacity: 0.1;
            transform: rotate(-20deg);
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.25rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.95;
        }
        .btn-join {
            display: inline-block;
            background: #fff;
            color: var(--primary);
            padding: 1rem 3rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            text-decoration: none;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-join:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
            background: var(--accent);
            color: #fff;
        }
        .layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
        }
        .main-content {
            padding: 2rem 0;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-top: -2rem;
            position: relative;
            z-index: 2;
        }
        .content-body {
            padding: 2.5rem;
        }
        .sidebar {
            padding: 2rem 0;
        }
        @media (min-width: 992px) {
            .layout {
                grid-template-columns: 1fr 320px;
                gap: 2rem;
            }
            .main-content {
                padding: 0;
            }
            .sidebar {
                padding-top: 2rem;
            }
        }
        .content-body h2 {
            font-size: 1.9rem;
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.8rem;
            border-bottom: 3px solid var(--accent);
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        .content-body h3 {
            font-size: 1.45rem;
            color: var(--primary-light);
            margin: 2rem 0 0.8rem;
            font-weight: 600;
        }
        .content-body h4 {
            font-size: 1.15rem;
            color: var(--dark);
            margin: 1.5rem 0 0.5rem;
            font-weight: 600;
        }
        .content-body p {
            margin-bottom: 1.4rem;
            font-size: 1.02rem;
            color: #334155;
        }
        .content-body strong {
            color: var(--primary);
            font-weight: 700;
        }
        .content-body ul {
            margin: 1rem 0 1.5rem 1.5rem;
        }
        .content-body ul li {
            margin-bottom: 0.6rem;
            position: relative;
        }
        .content-body ul li::before {
            content: "▹";
            color: var(--accent);
            font-weight: bold;
            margin-right: 0.5rem;
        }
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin: 2rem 0;
        }
        @media (min-width: 768px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .info-card {
            background: #f0f6ff;
            border-radius: var(--radius);
            padding: 1.5rem;
            border-left: 4px solid var(--primary-light);
            transition: var(--transition);
        }
        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(26, 75, 140, 0.12);
        }
        .info-card h4 {
            color: var(--primary);
            margin-top: 0;
        }
        .info-card p {
            margin-bottom: 0.5rem;
            font-size: 0.95rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fffbeb, #fef3c7);
            border-radius: var(--radius);
            padding: 1.8rem;
            margin: 2rem 0;
            border: 1px solid #fcd34d;
            position: relative;
        }
        .highlight-box::before {
            content: "⭐";
            font-size: 2rem;
            position: absolute;
            top: -1rem;
            left: 1rem;
            background: #fff;
            border-radius: 50%;
            padding: 0.3rem;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        .highlight-box p {
            margin-bottom: 0.8rem;
        }
        .data-table-wrap {
            overflow-x: auto;
            margin: 2rem 0;
            border-radius: var(--radius);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
            font-size: 0.92rem;
        }
        .data-table th {
            background: var(--primary);
            color: #fff;
            padding: 0.9rem 1.2rem;
            text-align: left;
            font-weight: 600;
            white-space: nowrap;
        }
        .data-table td {
            padding: 0.8rem 1.2rem;
            border-bottom: 1px solid var(--border);
        }
        .data-table tr:nth-child(even) {
            background: #f8fafc;
        }
        .data-table tr:hover {
            background: #f0f6ff;
        }
        .search-section {
            background: var(--dark);
            color: #fff;
            padding: 3rem 0;
            margin-top: 2rem;
        }
        .search-box {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 1rem 1.5rem;
            font-size: 1rem;
            outline: none;
            background: #fff;
        }
        .search-box button {
            background: var(--accent);
            border: none;
            padding: 0 1.8rem;
            color: #fff;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--accent-hover);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin: 3rem 0 1rem;
        }
        @media (min-width: 768px) {
            .feedback-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .feedback-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 2rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .feedback-card textarea {
            width: 100%;
            border: 2px solid var(--border);
            border-radius: 8px;
            padding: 0.9rem;
            font-size: 0.95rem;
            min-height: 110px;
            resize: vertical;
            font-family: inherit;
            transition: var(--transition);
        }
        .feedback-card textarea:focus {
            outline: none;
            border-color: var(--primary-light);
        }
        .feedback-card input[type="text"],
        .feedback-card input[type="email"] {
            width: 100%;
            border: 2px solid var(--border);
            border-radius: 8px;
            padding: 0.7rem 0.9rem;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .feedback-card input:focus {
            outline: none;
            border-color: var(--primary-light);
        }
        .btn-submit {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-submit:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: var(--accent);
        }
        .article-image {
            margin: 2.5rem 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }
        .article-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        .article-image:hover img {
            transform: scale(1.01);
        }
        .article-image figcaption {
            background: #fff;
            padding: 1rem 1.2rem;
            font-size: 0.85rem;
            color: var(--gray);
            border-top: 1px solid var(--border);
            text-align: center;
        }
        .toc {
            background: #f8fafc;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 1.8rem;
            margin-bottom: 2rem;
        }
        .toc h3 {
            margin-top: 0;
            font-size: 1.1rem;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .toc ul {
            list-style: none;
            margin: 1rem 0 0 0;
        }
        .toc li {
            margin-bottom: 0.5rem;
            font-size: 0.92rem;
        }
        .toc li::before {
            content: "📖";
            margin-right: 0.4rem;
            font-size: 0.8rem;
        }
        .toc a {
            color: var(--primary-light);
            text-decoration: none;
        }
        .toc a:hover {
            color: var(--accent-hover);
            text-decoration: underline;
        }
        .side-widget {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 1.8rem;
            margin-bottom: 2rem;
            border: 1px solid var(--border);
        }
        .side-widget h3 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-top: 0;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--accent);
        }
        .side-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .side-links li {
            margin-bottom: 0.5rem;
            border-bottom: 1px dashed var(--border);
            padding-bottom: 0.5rem;
        }
        .side-links li:last-child {
            border-bottom: none;
        }
        .side-links a {
            color: var(--dark);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .side-links a:hover {
            color: var(--primary-light);
            padding-left: 0.3rem;
        }
        .site-footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .footer-col h4 {
            color: #fff;
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.6rem;
        }
        .footer-col a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            padding: 1rem 1.5rem;
            font-size: 0.9rem;
            line-height: 1.8;
            color: #94a3b8;
            border: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 1.5rem;
        }
        .friend-link a {
            color: var(--accent);
            text-decoration: none;
            margin-right: 0.5rem;
            white-space: nowrap;
        }
        .friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
        }
        .copyright p {
            margin-bottom: 0.4rem;
        }
        .back-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: var(--primary);
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 4px 20px rgba(26, 75, 140, 0.4);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 99;
        }
        .back-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            background: var(--primary-light);
            transform: translateY(-4px);
        }
        @media (max-width: 768px) {
            .my-logo {
                font-size: 1.3rem;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background: var(--primary);
                border-radius: 0 0 20px 20px;
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
                padding: 1rem 2rem;
                margin: 0;
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .content-body {
                padding: 1.5rem;
            }
        }
        h1 {
            font-size: 2.5rem;
            font-weight: 800;
        }