*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #e63946;
            --secondary: #1d3557;
            --accent: #f1faee;
            --bg: #f8f9fa;
            --text: #212529;
            --light-gray: #e9ecef;
            --mid-gray: #6c757d;
            --border-radius: 8px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --transition: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: #c1121f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--secondary);
            color: #fff;
            padding: 0 0 4px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            flex-wrap: wrap;
            gap: 10px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: opacity var(--transition);
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
            color: #fff;
        }
        .my-logo span {
            color: #f4a261;
        }
        .my-logo i {
            font-size: 1.6rem;
            color: #f4a261;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-list {
            list-style: none;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: #fff;
            padding: 6px 14px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: background var(--transition), color var(--transition);
            display: block;
        }
        .nav-list li a:hover,
        .nav-list li a:focus {
            background: rgba(255, 255, 255, 0.18);
            color: #f4a261;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #fff;
            padding: 10px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--light-gray);
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 8px;
            color: var(--mid-gray);
        }
        .breadcrumb a {
            color: var(--secondary);
        }
        .breadcrumb .active {
            color: var(--mid-gray);
            font-weight: 500;
        }
        main {
            padding: 30px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--secondary);
        }
        .article-body h1 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .article-body .last-updated {
            display: block;
            font-size: 0.9rem;
            color: var(--mid-gray);
            margin-bottom: 24px;
            border-left: 4px solid var(--primary);
            padding-left: 14px;
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--secondary);
            border-bottom: 3px solid var(--primary);
            padding-bottom: 6px;
        }
        .article-body h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 30px 0 12px;
            color: #2b2d42;
        }
        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: #2b2d42;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 22px 28px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .article-body strong {
            color: var(--secondary);
        }
        .article-body .feature-box {
            background: #fff;
            border-radius: var(--border-radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            margin: 30px 0;
            border-left: 5px solid var(--primary);
        }
        .article-body .feature-box h3 {
            margin-top: 0;
        }
        .article-body .insight-card {
            background: #edf2f4;
            border-radius: var(--border-radius);
            padding: 20px 24px;
            margin: 20px 0;
        }
        .article-body .insight-card i {
            color: var(--primary);
            margin-right: 8px;
        }
        .article-image-wrap {
            margin: 30px 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-image-wrap img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .article-image-wrap figcaption {
            padding: 12px 18px;
            background: #fff;
            font-size: 0.9rem;
            color: var(--mid-gray);
            font-style: italic;
            border-top: 1px solid var(--light-gray);
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--border-radius);
            padding: 22px 20px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--secondary);
            border-bottom: 2px solid var(--primary);
            padding-bottom: 6px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid var(--light-gray);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            color: var(--secondary);
            font-weight: 500;
            display: block;
            padding: 4px 0;
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
        }
        .search-form {
            display: flex;
            gap: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid var(--light-gray);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 18px;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition);
        }
        .search-form button:hover {
            background: #c1121f;
        }
        .interaction-area {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0;
        }
        @media (max-width: 700px) {
            .interaction-area {
                grid-template-columns: 1fr;
            }
        }
        .interaction-card {
            background: #fff;
            border-radius: var(--border-radius);
            padding: 24px 26px;
            box-shadow: var(--shadow);
        }
        .interaction-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--secondary);
        }
        .interaction-card form label {
            display: block;
            font-weight: 600;
            margin: 12px 0 4px;
            font-size: 0.95rem;
        }
        .interaction-card form input,
        .interaction-card form textarea,
        .interaction-card form select {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid var(--light-gray);
            border-radius: 6px;
            font-size: 1rem;
            font-family: inherit;
            transition: border var(--transition);
        }
        .interaction-card form input:focus,
        .interaction-card form textarea:focus,
        .interaction-card form select:focus {
            border-color: var(--primary);
            outline: none;
        }
        .interaction-card form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .interaction-card form button {
            margin-top: 14px;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
        }
        .interaction-card form button:hover {
            background: #112233;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 8px 0 12px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f4a261;
        }
        friend-link {
            display: block;
            background: #fff;
            border-radius: var(--border-radius);
            padding: 18px 22px;
            box-shadow: var(--shadow);
            margin: 30px 0 10px;
        }
        friend-link::before {
            content: "🔗 Friend Links";
            display: block;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 6px;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 10px;
            background: var(--light-gray);
            border-radius: 20px;
            font-size: 0.9rem;
            color: var(--secondary);
            transition: background var(--transition), color var(--transition);
        }
        friend-link a:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }
        footer {
            background: var(--secondary);
            color: #ddd;
            padding: 28px 20px 18px;
            text-align: center;
            font-size: 0.9rem;
            margin-top: 30px;
        }
        footer .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
        }
        footer a {
            color: #f4a261;
        }
        footer a:hover {
            color: #fff;
        }
        footer .copyright {
            margin-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 14px;
            font-size: 0.85rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--secondary);
                padding: 12px 0 18px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 10px 20px;
                border-radius: 0;
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .breadcrumb {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .container {
                padding: 0 14px;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 480px) {
            .article-body h1 {
                font-size: 1.5rem;
            }
            .article-body p {
                font-size: 0.98rem;
            }
            .interaction-card {
                padding: 16px 18px;
            }
            .star-rating label {
                font-size: 1.6rem;
            }
        }
        .nav-list {
            transition: all 0.25s ease;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
        }
        .btn-primary:hover {
            background: #c1121f;
        }
        .schema-hidden {
            display: none;
        }