*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --deep-blue: #0b2b44;
            --ice-blue: #d6eaf8;
            --snow-white: #f8fbfd;
            --frost-gray: #e2edf2;
            --sliver: #a9c7d9;
            --golden: #e8b84b;
            --pine-green: #1a5c3a;
            --charcoal: #1e2a35;
            --text-dark: #1a2630;
            --text-light: #f0f7fc;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
            --max-width: 1200px;
            --transition: all 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--snow-white);
            color: var(--text-dark);
            line-height: 1.7;
            font-size: 1.05rem;
        }
        a {
            color: var(--deep-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--golden);
        }
        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(--deep-blue);
            color: var(--text-light);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .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: var(--snow-white);
            background: linear-gradient(135deg, var(--golden), #f5d98a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: var(--transition);
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.02);
            opacity: 0.92;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: var(--sliver);
            color: var(--sliver);
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: 2px solid var(--sliver);
            color: var(--snow-white);
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--golden);
            color: var(--golden);
        }
        .primary-nav {
            display: flex;
            gap: 8px 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .primary-nav a {
            color: var(--ice-blue);
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .primary-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 12px;
            right: 12px;
            height: 2px;
            background: var(--golden);
            transform: scaleX(0);
            transition: var(--transition);
        }
        .primary-nav a:hover::after,
        .primary-nav a.active::after {
            transform: scaleX(1);
        }
        .primary-nav a:hover {
            color: var(--golden);
            background: rgba(255, 255, 255, 0.05);
        }
        .breadcrumb {
            background: var(--frost-gray);
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: '❄';
            margin-right: 10px;
            color: var(--sliver);
            font-size: 0.7rem;
        }
        .breadcrumb a {
            color: var(--deep-blue);
            font-weight: 500;
        }
        .breadcrumb .current {
            color: var(--pine-green);
            font-weight: 600;
        }
        .main-content {
            padding: 40px 0 60px;
        }
        .article-header {
            margin-bottom: 36px;
        }
        .article-header h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--deep-blue);
            line-height: 1.2;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .article-header .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: #4a5b6b;
            font-size: 0.95rem;
            border-bottom: 2px solid var(--frost-gray);
            padding-bottom: 16px;
        }
        .article-header .meta i {
            margin-right: 6px;
            color: var(--sliver);
        }
        .last-updated {
            font-weight: 600;
            color: var(--pine-green);
        }
        .featured-image {
            margin: 28px 0 32px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            background: var(--frost-gray);
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 12px 18px;
            font-size: 0.9rem;
            color: #3a4a5a;
            background: var(--frost-gray);
            font-style: italic;
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--deep-blue);
            margin-top: 48px;
            margin-bottom: 16px;
            border-left: 5px solid var(--golden);
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--pine-green);
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--charcoal);
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .article-body p {
            margin-bottom: 18px;
            color: #2a3a48;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 20px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body strong {
            color: var(--deep-blue);
        }
        .article-body .highlight-box {
            background: linear-gradient(135deg, #eef7fb, #dceaf5);
            border-left: 5px solid var(--golden);
            padding: 24px 28px;
            border-radius: var(--radius-sm);
            margin: 28px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .highlight-box i {
            color: var(--golden);
            margin-right: 8px;
        }
        .inline-link {
            color: var(--pine-green);
            font-weight: 600;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
        }
        .inline-link:hover {
            border-bottom-color: var(--golden);
            color: var(--deep-blue);
        }
        .interactive-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 48px 0;
        }
        .card {
            background: white;
            border-radius: var(--radius-md);
            padding: 28px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--frost-gray);
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .card h3 {
            font-size: 1.4rem;
            margin-top: 0;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card h3 i {
            color: var(--golden);
        }
        .search-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 12px 18px;
            border: 2px solid var(--frost-gray);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
            background: var(--snow-white);
        }
        .search-form input:focus {
            border-color: var(--deep-blue);
            box-shadow: 0 0 0 4px rgba(11, 43, 68, 0.08);
        }
        .search-form button {
            padding: 12px 28px;
            background: var(--deep-blue);
            color: white;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--pine-green);
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 12px 0 18px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #d0d8de;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--golden);
        }
        .comment-box textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--frost-gray);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-family: var(--font-sans);
            resize: vertical;
            min-height: 100px;
            transition: var(--transition);
            background: var(--snow-white);
        }
        .comment-box textarea:focus {
            border-color: var(--deep-blue);
            box-shadow: 0 0 0 4px rgba(11, 43, 68, 0.06);
        }
        .comment-box .btn-row {
            display: flex;
            gap: 12px;
            margin-top: 12px;
            flex-wrap: wrap;
        }
        .btn-primary {
            padding: 12px 32px;
            background: var(--deep-blue);
            color: white;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background: var(--pine-green);
            transform: translateY(-1px);
        }
        .btn-secondary {
            padding: 12px 32px;
            background: transparent;
            color: var(--deep-blue);
            border: 2px solid var(--deep-blue);
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-secondary:hover {
            background: var(--deep-blue);
            color: white;
        }
        .rating-display {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin: 8px 0 4px;
        }
        .rating-display .stars {
            color: var(--golden);
            font-size: 1.3rem;
            letter-spacing: 2px;
        }
        .rating-display .score-num {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--deep-blue);
        }
        .friend-links-section {
            background: var(--deep-blue);
            color: var(--text-light);
            padding: 40px 0;
            margin-top: 20px;
        }
        .friend-links-section h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--golden);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: center;
        }
        friend-link a {
            color: var(--ice-blue);
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.06);
            transition: var(--transition);
            font-size: 0.95rem;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--golden);
        }
        .site-footer {
            background: var(--charcoal);
            color: #b0c4d4;
            padding: 28px 0;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            margin-top: 8px;
            color: #8a9aa8;
        }
        .site-footer a {
            color: var(--sliver);
        }
        .site-footer a:hover {
            color: var(--golden);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 8px;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 10px 16px;
                border-radius: 8px;
            }
            .primary-nav a::after {
                display: none;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .interactive-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
            .article-body h3 {
                font-size: 1.3rem;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.6rem;
            }
            .card {
                padding: 20px 16px;
            }
            .search-form input {
                min-width: 140px;
            }
            .container {
                padding: 0 14px;
            }
        }
        .primary-nav {
            transition: max-height 0.3s ease;
        }
        .schema-hidden {
            display: none;
        }