* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a2a3a;
            --secondary: #e63946;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #0d1b2a;
            --text: #2b2d42;
            --text-light: #6c757d;
            --white: #ffffff;
            --border: #dee2e6;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --transition: 0.3s ease;
            --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            color: var(--text);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #c1121f;
            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;
        }
        header {
            background: var(--bg-dark);
            color: var(--white);
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f4a261, #e63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-transform: uppercase;
            font-style: italic;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a:hover {
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: none;
            color: var(--white);
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        nav a {
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
        }
        nav a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: var(--white);
            padding: 12px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--text-light);
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: var(--secondary);
        }
        .breadcrumb span {
            margin: 0 6px;
            color: var(--text-light);
        }
        main {
            padding: 30px 20px 60px;
            max-width: 1200px;
            margin: 0 auto;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--bg-dark);
            line-height: 1.2;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        h1 i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .last-updated {
            display: inline-block;
            background: var(--accent);
            color: var(--bg-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
        }
        h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--bg-dark);
            margin-top: 48px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--secondary);
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 32px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 24px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 16px;
            font-size: 1.02rem;
            color: var(--text);
        }
        .lead {
            font-size: 1.2rem;
            color: var(--text-light);
            font-weight: 400;
            margin-bottom: 24px;
            background: var(--white);
            padding: 20px 24px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border-left: 4px solid var(--secondary);
        }
        .featured-image {
            margin: 28px 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: var(--white);
            padding: 8px;
        }
        .featured-image img {
            border-radius: calc(var(--radius) - 4px);
        }
        .featured-image figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-light);
            padding: 10px 0 4px;
            font-style: italic;
        }
        .code-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .code-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 18px 20px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .code-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }
        .code-card .code {
            font-family: 'Courier New', monospace;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--secondary);
            background: #fff0f0;
            padding: 2px 10px;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 6px;
        }
        .code-card .status {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .code-card .status .active {
            color: #2d6a4f;
            font-weight: 600;
        }
        .code-card .status .expired {
            color: #d00000;
            font-weight: 600;
        }
        .tip-box {
            background: #eef9f2;
            border-left: 4px solid #2d6a4f;
            padding: 16px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 20px 0;
        }
        .tip-box i {
            color: #2d6a4f;
            margin-right: 8px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        th {
            background: var(--bg-dark);
            color: var(--white);
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f1f3f5;
        }
        .link-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 8px 16px;
            margin: 16px 0;
        }
        .link-list li {
            padding: 4px 0;
        }
        .link-list li::before {
            content: '⚽ ';
            color: var(--secondary);
        }
        .search-section {
            background: var(--white);
            padding: 28px 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 40px 0;
        }
        .search-section form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border: 2px solid var(--border);
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-section input[type="text"]:focus {
            border-color: var(--secondary);
        }
        .search-section button {
            padding: 14px 32px;
            background: var(--secondary);
            color: var(--white);
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-section button:hover {
            background: #c1121f;
            transform: scale(1.02);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 40px 0;
        }
        @media (max-width: 768px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        .comment-section,
        .rating-section {
            background: var(--white);
            padding: 28px 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .comment-section h3,
        .rating-section h3 {
            margin-top: 0;
        }
        .comment-section textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--border);
            border-radius: 12px;
            font-size: 1rem;
            font-family: var(--font-main);
            resize: vertical;
            min-height: 100px;
            outline: none;
            transition: var(--transition);
        }
        .comment-section textarea:focus {
            border-color: var(--secondary);
        }
        .comment-section input[type="text"] {
            width: 100%;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 12px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
            margin-top: 10px;
        }
        .comment-section input[type="text"]:focus {
            border-color: var(--secondary);
        }
        .comment-section button,
        .rating-section button {
            padding: 12px 28px;
            background: var(--secondary);
            color: var(--white);
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 12px;
        }
        .comment-section button:hover,
        .rating-section button:hover {
            background: #c1121f;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 4px;
            justify-content: flex-end;
            margin: 12px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: var(--border);
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f4a261;
        }
        footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 40px 20px 20px;
            margin-top: 60px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
        }
        friend-link {
            display: block;
            margin-bottom: 24px;
        }
        friend-link a {
            color: var(--accent);
            margin: 0 8px;
            display: inline-block;
        }
        friend-link a:hover {
            color: var(--white);
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            font-size: 0.9rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
        }
        @media (max-width: 900px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 8px;
                padding: 16px 0 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 10px;
            }
            nav a {
                padding: 10px 0;
                font-size: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
                width: 100%;
            }
            .nav-toggle:checked~nav {
                display: flex;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 10px 16px;
            }
            main {
                padding: 20px 16px 40px;
            }
            .code-grid {
                grid-template-columns: 1fr;
            }
            .search-section form {
                flex-direction: column;
            }
            .search-section input[type="text"] {
                min-width: auto;
            }
            .search-section button {
                width: 100%;
            }
            .link-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .lead {
                font-size: 1rem;
                padding: 16px 18px;
            }
            .code-card {
                padding: 14px 16px;
            }
            .comment-section,
            .rating-section,
            .search-section {
                padding: 20px 18px;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--secondary);
            color: var(--white);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: var(--transition);
            border: none;
            z-index: 999;
        }
        .scroll-top:hover {
            background: var(--bg-dark);
            transform: translateY(-4px);
        }