*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a4b2e;
            --primary-light: #2d6a4f;
            --secondary: #e9c46a;
            --accent: #f4a261;
            --bg: #f9f7f3;
            --bg-card: #ffffff;
            --text: #1d1d1d;
            --text-light: #4a4a4a;
            --border: #d4d4d4;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            --radius: 16px;
            --radius-sm: 8px;
            --max-width: 1200px;
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            --transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--primary);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 2rem;
        }
        .my-logo:hover {
            color: var(--secondary);
        }
        .my-logo span {
            font-weight: 300;
            font-size: 1rem;
            opacity: 0.8;
            display: none;
        }
        @media (min-width: 540px) {
            .my-logo span {
                display: inline;
            }
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
        }
        .nav-menu a {
            color: rgba(255, 255, 255, 0.88);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: border-color var(--transition), color var(--transition);
        }
        .nav-menu a:hover {
            color: #fff;
            border-bottom-color: var(--secondary);
        }
        .nav-menu .active a {
            color: #fff;
            border-bottom-color: var(--secondary);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 4px;
                padding: 16px 0 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.15);
                margin-top: 8px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 10px 12px;
                border-radius: 8px;
                width: 100%;
            }
            .nav-menu a:hover {
                background: rgba(255, 255, 255, 0.08);
                border-bottom-color: transparent;
            }
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #888;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding: 32px 0 48px;
        }
        @media (min-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr 300px;
            }
        }
        .content-article h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .content-article h1 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .last-updated {
            display: block;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 24px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 12px;
        }
        .content-article h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 40px;
            margin-bottom: 16px;
            border-left: 5px solid var(--accent);
            padding-left: 16px;
        }
        .content-article h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-top: 28px;
            margin-bottom: 10px;
        }
        .content-article h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 20px;
            margin-bottom: 8px;
        }
        .content-article p {
            margin-bottom: 18px;
            color: var(--text-light);
        }
        .content-article strong {
            color: var(--text);
            font-weight: 600;
        }
        .content-article ul,
        .content-article ol {
            margin: 12px 0 20px 24px;
            color: var(--text-light);
        }
        .content-article li {
            margin-bottom: 6px;
        }
        .feature-box {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            margin: 28px 0;
            border-left: 6px solid var(--secondary);
        }
        .feature-box h3 {
            margin-top: 0;
        }
        .img-wrapper {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .img-wrapper img {
            width: 100%;
            display: block;
        }
        .img-wrapper figcaption {
            background: #fff;
            padding: 12px 18px;
            font-size: 0.88rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 22px 20px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 8px;
        }
        .link-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .link-list li {
            margin-bottom: 10px;
        }
        .link-list a {
            display: block;
            padding: 8px 12px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            transition: background var(--transition), transform var(--transition);
        }
        .link-list a:hover {
            background: var(--secondary);
            color: var(--text);
            transform: translateX(4px);
        }
        .link-list a i {
            margin-right: 8px;
            color: var(--accent);
            width: 18px;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            outline: none;
            transition: border-color var(--transition);
        }
        .search-form input[type="text"]:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 18px;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-light);
        }
        .comment-form textarea {
            width: 100%;
            padding: 12px 14px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-family: var(--font);
            font-size: 0.95rem;
            resize: vertical;
            min-height: 90px;
            outline: none;
            transition: border-color var(--transition);
        }
        .comment-form textarea:focus {
            border-color: var(--primary);
        }
        .comment-form .form-row {
            display: flex;
            gap: 12px;
            margin-top: 10px;
            flex-wrap: wrap;
        }
        .comment-form input[type="text"] {
            flex: 1;
            min-width: 160px;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            outline: none;
            transition: border-color var(--transition);
        }
        .comment-form input[type="text"]:focus {
            border-color: var(--primary);
        }
        .comment-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
        }
        .comment-form button:hover {
            background: var(--primary-light);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            flex-direction: row-reverse;
            justify-content: flex-end;
            margin: 8px 0 12px;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: color var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: #f4b942;
        }
        .rating-form button {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 8px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
        }
        .rating-form button:hover {
            background: #e08f4a;
        }
        friend-link {
            display: block;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 20px;
            box-shadow: var(--shadow);
            margin-top: 32px;
        }
        friend-link h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 8px;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            margin: 0;
            padding: 0;
        }
        friend-link li {
            margin: 0;
        }
        friend-link a {
            color: var(--primary-light);
            font-weight: 500;
            font-size: 0.92rem;
        }
        friend-link a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.88);
            padding: 28px 0 20px;
            margin-top: 20px;
        }
        .site-footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .site-footer .copyright {
            font-size: 0.85rem;
            opacity: 0.85;
        }
        .site-footer .copyright strong {
            color: #fff;
            opacity: 1;
        }
        .site-footer .footer-links {
            display: flex;
            gap: 20px;
            font-size: 0.85rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.8);
        }
        .site-footer .footer-links a:hover {
            color: var(--secondary);
        }
        @media (max-width: 480px) {
            .content-article h1 {
                font-size: 1.8rem;
            }
            .content-article h2 {
                font-size: 1.4rem;
            }
            .content-article h3 {
                font-size: 1.15rem;
            }
            .feature-box {
                padding: 16px 18px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .sidebar-card {
                padding: 16px;
            }
            .rating-stars label {
                font-size: 1.5rem;
            }
        }
        @media (min-width: 769px) and (max-width: 991px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        h2,
        h3,
        h4 {
            scroll-margin-top: 90px;
        }
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .gap-1 {
            gap: 8px;
        }
        .sidebar-card a,
        .feature-box a {
            font-weight: 500;
        }
        .content-article .long-text {
            max-width: 100%;
        }