* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #2c3e8f;
            --primary-light: #4a6ab5;
            --primary-dark: #1a2744;
            --accent: #f5a623;
            --accent-hover: #e6951f;
            --bg: #f8f9fc;
            --card-bg: #ffffff;
            --text: #1e293b;
            --text-light: #475569;
            --border: #e2e8f0;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding: 0 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        body>header,
        body>main,
        body>footer {
            width: 100%;
            max-width: var(--max-width);
        }
        .site-header {
            padding: 20px 0 10px;
            border-bottom: 2px solid var(--border);
            background: var(--card-bg);
            border-radius: 0 0 var(--radius) var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
            position: relative;
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            gap: 15px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            transition: color 0.25s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 2rem;
        }
        .my-logo:hover {
            color: var(--primary-light);
        }
        .my-logo span {
            font-weight: 300;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-left: 4px;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: var(--border);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            display: block;
            padding: 8px 18px;
            border-radius: 30px;
            text-decoration: none;
            color: var(--text);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.25s;
            background: transparent;
        }
        .nav-list li a:hover,
        .nav-list li a.active {
            background: var(--primary);
            color: #fff;
        }
        .breadcrumb {
            padding: 12px 20px 0;
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 35px;
            padding: 10px 0 40px;
        }
        .content {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 30px 35px;
            overflow: hidden;
        }
        .content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 10px;
            line-height: 1.2;
        }
        .content h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .meta-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            padding: 12px 0 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 25px;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .meta-bar i {
            margin-right: 6px;
            color: var(--primary-light);
        }
        .last-updated {
            font-weight: 600;
            color: var(--primary);
        }
        .content h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin: 40px 0 16px;
            padding-bottom: 6px;
            border-bottom: 3px solid var(--accent);
        }
        .content h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--primary-dark);
            margin: 30px 0 12px;
        }
        .content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin: 20px 0 8px;
        }
        .content p {
            margin-bottom: 18px;
            color: var(--text);
        }
        .content ul,
        .content ol {
            margin: 12px 0 20px 24px;
        }
        .content li {
            margin-bottom: 6px;
        }
        .content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 25px 0;
            box-shadow: var(--shadow);
            display: block;
        }
        .content .highlight-box {
            background: #f0f4ff;
            border-left: 5px solid var(--accent);
            padding: 18px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 25px 0;
        }
        .content .btn-link {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: background 0.25s;
        }
        .content .btn-link:hover {
            background: var(--primary-light);
        }
        .content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .content a:hover {
            color: var(--accent-hover);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 22px;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 6px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            color: var(--text);
            text-decoration: none;
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s;
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
        }
        .sidebar-card ul li a i {
            color: var(--accent);
            font-size: 0.8rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0 18px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.25s;
        }
        .search-form button:hover {
            background: var(--primary-light);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin: 10px 0 8px;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.15s;
        }
        .star-rating i.active,
        .star-rating i:hover {
            color: var(--accent);
            transform: scale(1.05);
        }
        .rating-form textarea {
            width: 100%;
            padding: 12px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: var(--font);
            font-size: 0.95rem;
            resize: vertical;
            min-height: 70px;
            margin: 8px 0 10px;
            outline: none;
            transition: border 0.25s;
        }
        .rating-form textarea:focus {
            border-color: var(--primary);
        }
        .rating-form .btn {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 10px 26px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            font-size: 0.95rem;
        }
        .rating-form .btn:hover {
            background: var(--accent-hover);
        }
        .comment-form textarea {
            width: 100%;
            padding: 12px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: var(--font);
            font-size: 0.95rem;
            resize: vertical;
            min-height: 80px;
            margin: 6px 0 10px;
            outline: none;
            transition: border 0.25s;
        }
        .comment-form textarea:focus {
            border-color: var(--primary);
        }
        .comment-form .btn {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 26px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            font-size: 0.95rem;
        }
        .comment-form .btn:hover {
            background: var(--primary-light);
        }
        .site-footer {
            background: var(--primary-dark);
            color: #e2e8f0;
            border-radius: var(--radius) var(--radius) 0 0;
            padding: 35px 30px 25px;
            margin-top: 20px;
        }
        .site-footer a {
            color: #f5a623;
            text-decoration: none;
        }
        .site-footer a:hover {
            text-decoration: underline;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 25px;
        }
        .footer-grid h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-grid ul {
            list-style: none;
        }
        .footer-grid ul li {
            padding: 4px 0;
        }
        .footer-grid ul li a {
            font-size: 0.9rem;
        }
        friend-link {
            display: block;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding: 20px 0 10px;
            margin-top: 10px;
        }
        friend-link h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 22px;
        }
        friend-link ul li a {
            font-size: 0.9rem;
            color: #e2e8f0;
        }
        friend-link ul li a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 18px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.85rem;
            color: #94a3b8;
        }
        @media (max-width: 920px) {
            main {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: 2;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                padding: 0 12px;
            }
            .header-inner {
                padding: 0 10px;
            }
            .hamburger {
                display: block;
            }
            .nav-wrap {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 15px 0 5px;
            }
            .nav-wrap.open {
                display: flex;
            }
            .nav-list {
                flex-direction: column;
                width: 100%;
                gap: 2px;
            }
            .nav-list li a {
                padding: 12px 18px;
                border-radius: 8px;
            }
            .content {
                padding: 20px 18px;
            }
            .content h1 {
                font-size: 1.8rem;
            }
            .content h2 {
                font-size: 1.4rem;
            }
            .content h3 {
                font-size: 1.15rem;
            }
            .meta-bar {
                flex-direction: column;
                gap: 6px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            friend-link ul {
                flex-direction: column;
                gap: 6px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .content h1 {
                font-size: 1.5rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
            .search-form {
                flex-wrap: wrap;
            }
            .search-form button {
                padding: 10px 16px;
            }
        }
        .sidebar-card,
        .content,
        .site-header {
            transition: box-shadow 0.3s;
        }
        .sidebar-card:hover,
        .content:hover {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .emoji-lg {
            font-size: 1.4em;
            display: inline-block;
            margin-right: 4px;
        }