*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            background: #f8faf7;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a7a2e;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #58cc02;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        :root {
            --duo-green: #58cc02;
            --duo-dark: #1a1a2e;
            --duo-light: #f8faf7;
            --duo-accent: #ff9600;
            --duo-blue: #1cb0f6;
            --duo-red: #ff4b4b;
            --duo-gray: #6c757d;
            --duo-border: #e6e8e6;
            --duo-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --duo-radius: 16px;
        }
        header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--duo-green);
            font-size: 1.8rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--duo-green);
        }
        .my-logo span {
            color: var(--duo-green);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        nav a {
            color: #e0e0e0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: all 0.25s ease;
        }
        nav a:hover {
            color: var(--duo-green);
            border-bottom-color: var(--duo-green);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: #fff;
            cursor: pointer;
            padding: 4px 8px;
        }
        .nav-overlay {
            display: none;
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid var(--duo-border);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: var(--duo-gray);
            font-weight: 700;
        }
        .breadcrumb a {
            color: var(--duo-gray);
        }
        .breadcrumb .current {
            color: var(--duo-dark);
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        .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(--duo-dark);
        }
        .article-body h1 i {
            color: var(--duo-green);
            margin-right: 10px;
        }
        .article-body .subtitle {
            font-size: 1.1rem;
            color: var(--duo-gray);
            margin-bottom: 24px;
            border-left: 4px solid var(--duo-green);
            padding-left: 16px;
        }
        .article-body .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 32px;
            font-size: 0.9rem;
            color: var(--duo-gray);
            margin-bottom: 28px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--duo-border);
        }
        .article-body .meta i {
            margin-right: 6px;
            color: var(--duo-green);
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 48px 0 16px;
            color: var(--duo-dark);
            border-bottom: 3px solid var(--duo-green);
            padding-bottom: 8px;
            display: inline-block;
        }
        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: #2d3a4a;
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 24px 0 10px;
            color: #3a4a5a;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
        }
        .article-body .highlight-box {
            background: #eef7ee;
            border-left: 5px solid var(--duo-green);
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .article-body .highlight-box strong {
            color: var(--duo-dark);
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 20px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .article-body .feature-img-wrap {
            margin: 32px 0;
            border-radius: var(--duo-radius);
            overflow: hidden;
            box-shadow: var(--duo-shadow);
        }
        .article-body .feature-img-wrap figcaption {
            background: #f0f2ef;
            padding: 10px 16px;
            font-size: 0.9rem;
            color: var(--duo-gray);
            text-align: center;
            font-style: italic;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--duo-radius);
            box-shadow: var(--duo-shadow);
            padding: 24px;
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--duo-dark);
            border-bottom: 2px solid var(--duo-green);
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            font-size: 0.95rem;
            color: #2d3a4a;
            border-bottom: 1px solid #f0f2ef;
        }
        .sidebar-card li a i {
            color: var(--duo-green);
            width: 18px;
            text-align: center;
        }
        .sidebar-card li a:hover {
            color: var(--duo-green);
            text-decoration: none;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid var(--duo-border);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: var(--duo-green);
        }
        .search-form button {
            background: var(--duo-green);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 10px 18px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #4ab802;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            cursor: pointer;
            margin: 10px 0;
            direction: rtl;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            color: #ddd;
            transition: color 0.2s;
            cursor: pointer;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: var(--duo-accent);
        }
        .rating-form button,
        .comment-form button {
            background: var(--duo-green);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.3s;
            margin-top: 6px;
        }
        .rating-form button:hover,
        .comment-form button:hover {
            background: #4ab802;
        }
        .comment-form textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--duo-border);
            border-radius: 8px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 100px;
            font-family: inherit;
            outline: none;
            transition: border 0.3s;
        }
        .comment-form textarea:focus {
            border-color: var(--duo-green);
        }
        .comment-form .field-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin: 12px 0;
        }
        .comment-form .field-group input {
            flex: 1;
            min-width: 180px;
            padding: 10px 14px;
            border: 2px solid var(--duo-border);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
        }
        .comment-form .field-group input:focus {
            border-color: var(--duo-green);
        }
        footer {
            background: #1a1a2e;
            color: #ccc;
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
            font-weight: 600;
        }
        footer a {
            color: #aaa;
            display: block;
            padding: 4px 0;
            font-size: 0.92rem;
        }
        footer a:hover {
            color: var(--duo-green);
            text-decoration: none;
        }
        friend-link {
            display: block;
            margin: 16px 0 8px;
            padding: 16px 0;
            border-top: 1px solid #2a2a4a;
            border-bottom: 1px solid #2a2a4a;
        }
        friend-link a {
            display: inline-block;
            margin-right: 20px;
            padding: 4px 0;
            color: #8ab4f8;
        }
        friend-link a:hover {
            color: var(--duo-green);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            font-size: 0.85rem;
            color: #888;
            border-top: 1px solid #2a2a4a;
            margin-top: 16px;
        }
        .copyright strong {
            color: #ccc;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .article-body h1 {
                font-size: 1.9rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: #1a1a2e;
                flex-direction: column;
                padding: 20px 24px;
                gap: 12px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
                z-index: 999;
                border-top: 1px solid #2a2a4a;
            }
            nav.open {
                display: flex;
            }
            nav a {
                font-size: 1.05rem;
                padding: 10px 0;
                border-bottom: 1px solid #2a2a4a;
            }
            .nav-overlay.open {
                display: block;
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0, 0, 0, 0.4);
                z-index: 998;
            }
            .header-inner {
                padding: 0 4px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .article-body h1 {
                font-size: 1.6rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
                padding: 8px 0;
            }
            .container {
                padding: 0 14px;
            }
            .rating-stars {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .article-body h1 {
                font-size: 1.35rem;
            }
            .article-body .meta {
                flex-direction: column;
                gap: 6px;
            }
            .comment-form .field-group {
                flex-direction: column;
            }
        }
        .btn-up {
            display: inline-block;
            background: var(--duo-green);
            color: #fff;
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        .btn-up:hover {
            background: #4ab802;
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .tag {
            display: inline-block;
            background: #eef7ee;
            color: var(--duo-dark);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .last-updated {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--duo-gray);
            font-size: 0.9rem;
        }
        .last-updated i {
            color: var(--duo-green);
        }
        .emoji-big {
            font-size: 1.3em;
            margin-right: 4px;
        }