*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7f0;
            color: #1e2a1e;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2a6f2a;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #4a9e4a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: #1e3a1e;
            line-height: 1.3;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #6a9e6a;
            padding-bottom: 0.4rem;
        }
        h2 {
            font-size: 1.9rem;
            border-left: 5px solid #6a9e6a;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #2a4a2a;
        }
        h4 {
            font-size: 1.2rem;
            color: #3a5a3a;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #1e3a1e, #2a5a2a);
            padding: 1rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #f5f7e0;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            transition: transform 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #d4e8b0;
        }
        .my-logo i {
            color: #b8d98a;
            font-size: 2rem;
        }
        .my-logo span {
            font-size: 0.9rem;
            font-weight: 400;
            color: #b8d98a;
            display: block;
            font-size: 0.7rem;
            letter-spacing: 2px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .main-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e8efe0;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: #6a9e6a;
            color: #0f1f0f;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 6px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #f5f7e0;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e8efe0;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #c8d8c0;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            gap: 0.4rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.5rem;
            color: #6a8a6a;
        }
        .breadcrumb a {
            color: #2a5a2a;
        }
        .breadcrumb .current {
            color: #4a6a4a;
            font-weight: 600;
        }
        .main-content {
            padding: 2.5rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .article-body {
            background: #ffffff;
            padding: 2rem 2.5rem;
            border-radius: 20px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background: #ffffff;
            padding: 1.8rem 1.5rem;
            border-radius: 20px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #d4e8b0;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #eef3e8;
        }
        .sidebar li a {
            color: #2a5a2a;
            font-weight: 500;
        }
        .sidebar li a:hover {
            color: #4a9e4a;
        }
        .feature-image {
            margin: 1.8rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .feature-image figcaption {
            background: #f0f5ea;
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #3a5a3a;
            font-style: italic;
        }
        .last-updated {
            background: #f0f5ea;
            padding: 0.6rem 1.2rem;
            border-radius: 30px;
            display: inline-block;
            font-size: 0.85rem;
            color: #3a5a3a;
            margin-bottom: 1.5rem;
            border: 1px solid #d4e8b0;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .interaction-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px dashed #c8d8c0;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .interaction-card {
            background: #f8faf5;
            padding: 1.8rem 2rem;
            border-radius: 16px;
            border: 1px solid #dee8d5;
        }
        .interaction-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            padding: 0.7rem 1rem;
            border: 1px solid #c8d8c0;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #ffffff;
            font-family: inherit;
            transition: border 0.2s;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            outline: none;
            border-color: #6a9e6a;
            box-shadow: 0 0 0 3px rgba(106, 158, 106, 0.15);
        }
        .interaction-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #2a6f2a;
            color: #ffffff;
            padding: 0.7rem 1.8rem;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            justify-content: center;
        }
        .btn:hover {
            background: #3a8a3a;
            transform: translateY(-2px);
        }
        .btn-secondary {
            background: #5a7a5a;
        }
        .btn-secondary:hover {
            background: #6a8a6a;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #c8d8c0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
        }
        .site-footer {
            background: #1e2a1e;
            color: #d4e0c8;
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
        }
        .footer-inner h4 {
            color: #b8d98a;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner p,
        .footer-inner a {
            color: #c8d8b8;
            font-size: 0.9rem;
        }
        .footer-inner a:hover {
            color: #e0f0c8;
        }
        friend-link {
            display: block;
            background: #2a3a2a;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            margin-top: 1rem;
        }
        friend-link a {
            color: #b8d98a;
            margin: 0 0.8rem 0 0;
            display: inline-block;
            padding: 0.2rem 0;
        }
        friend-link a:hover {
            color: #d4e8b0;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #3a4a3a;
            font-size: 0.85rem;
            color: #8a9a7a;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .article-body {
                order: 1;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1e3a1e;
                padding: 1rem 0.5rem;
                border-radius: 12px;
                margin-top: 0.5rem;
                gap: 0.2rem;
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                border-radius: 8px;
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-wrapper {
                width: 100%;
                flex-direction: column;
            }
            .article-body {
                padding: 1.2rem 1rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .sidebar {
                padding: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .interaction-card {
                padding: 1.2rem;
            }
            .breadcrumb ol {
                font-size: 0.75rem;
            }
        }
        .highlight-box {
            background: #f0f8ea;
            border-left: 5px solid #6a9e6a;
            padding: 1.2rem 1.8rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .highlight-box i {
            color: #4a8a4a;
            margin-right: 8px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.7rem 1rem;
            border: 1px solid #d4e0c8;
            text-align: left;
        }
        th {
            background: #e8efe0;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.8rem;
            margin-right: 0.3rem;
        }
        .tag {
            display: inline-block;
            background: #d4e8b0;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #1e3a1e;
        }
        .glossary-term {
            font-weight: 700;
            color: #2a5a2a;
        }
        .player-quote {
            background: #f5f7f0;
            padding: 1.2rem 1.8rem;
            border-radius: 16px;
            font-style: italic;
            position: relative;
            margin: 1.5rem 0;
            border: 1px solid #dee8d5;
        }
        .player-quote::before {
            content: "\201C";
            font-size: 3rem;
            color: #6a9e6a;
            position: absolute;
            top: -0.2rem;
            left: 0.8rem;
            opacity: 0.3;
        }
        .player-quote cite {
            display: block;
            margin-top: 0.5rem;
            font-style: normal;
            font-weight: 600;
            color: #3a5a3a;
        }
        .data-point {
            font-weight: 700;
            color: #1e5a1e;
            background: #e8f0e0;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
        }