* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.8;
            font-size: 16px;
            padding: 0 16px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            border-radius: 28px;
            padding: 20px 28px 10px;
            margin-top: 20px;
            margin-bottom: 20px;
        }
        .header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0 16px;
            border-bottom: 2px solid #eef0f5;
            position: relative;
        }
        .my-logo {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(145deg, #0b1a2e, #1d3a5c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: #e8b830;
            font-size: 28px;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 28px;
            color: #1a1a2e;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #f0f2f8;
        }
        .navbar {
            display: flex;
            gap: 8px 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        .navbar a {
            text-decoration: none;
            color: #2c3e50;
            font-weight: 600;
            font-size: 15px;
            padding: 6px 10px;
            border-radius: 8px;
            transition: background 0.2s, color 0.2s;
        }
        .navbar a:hover {
            background: #eef2f9;
            color: #0b1a2e;
        }
        .navbar a i {
            margin-right: 6px;
            color: #b22234;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            font-size: 13px;
            color: #5a6a7a;
            padding: 12px 0 8px;
            gap: 6px 12px;
            border-bottom: 1px solid #eef0f5;
            margin-bottom: 20px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #b0bcca;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2c6b9e;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .hero {
            margin-bottom: 36px;
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            background: #0f1a2c;
        }
        .hero img {
            width: 100%;
            height: auto;
            max-height: 420px;
            object-fit: cover;
            display: block;
            opacity: 0.9;
            transition: opacity 0.4s;
        }
        .hero img:hover {
            opacity: 1;
        }
        .hero-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 30px 28px 24px;
            background: linear-gradient(transparent, rgba(10, 20, 35, 0.85));
            color: #fff;
        }
        .hero-overlay h1 {
            font-size: clamp(24px, 4vw, 42px);
            font-weight: 800;
            line-height: 1.2;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
            margin-bottom: 6px;
        }
        .hero-overlay p {
            font-size: clamp(14px, 1.6vw, 20px);
            opacity: 0.92;
            max-width: 700px;
        }
        .last-updated {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 13px;
            margin-top: 8px;
            color: #e8eef5;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-bottom: 40px;
        }
        .main-article h2 {
            font-size: clamp(22px, 2.6vw, 32px);
            font-weight: 700;
            color: #0b1a2e;
            margin-top: 42px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #e8b830;
            display: inline-block;
        }
        .main-article h3 {
            font-size: clamp(18px, 2vw, 24px);
            font-weight: 700;
            color: #1d3a5c;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .main-article h4 {
            font-size: clamp(16px, 1.4vw, 20px);
            font-weight: 600;
            color: #2c4a6e;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .main-article p {
            margin-bottom: 18px;
            font-size: 16px;
            color: #1f2a3a;
        }
        .main-article strong {
            color: #b22234;
            font-weight: 700;
        }
        .main-article em {
            font-style: italic;
            color: #3a5a7a;
        }
        .main-article ul,
        .main-article ol {
            margin: 12px 0 22px 24px;
        }
        .main-article li {
            margin-bottom: 8px;
        }
        .main-article a {
            color: #1d5a8e;
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color 0.2s;
        }
        .main-article a:hover {
            color: #b22234;
        }
        .highlight-box {
            background: #f0f5fe;
            border-left: 5px solid #e8b830;
            padding: 18px 22px;
            border-radius: 12px;
            margin: 22px 0;
            font-size: 15px;
        }
        .highlight-box i {
            color: #e8b830;
            margin-right: 8px;
        }
        .skin-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0 28px;
            font-size: 15px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .skin-table th {
            background: #0b1a2e;
            color: #f5f7fa;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .skin-table td {
            padding: 12px 16px;
            border-bottom: 1px solid #eef0f5;
            background: #ffffff;
        }
        .skin-table tr:last-child td {
            border-bottom: none;
        }
        .skin-table tr:hover td {
            background: #f8fafd;
        }
        .insight-card {
            background: #fafcff;
            border: 1px solid #e6ecf5;
            border-radius: 16px;
            padding: 20px 22px;
            margin: 20px 0;
            transition: box-shadow 0.3s;
        }
        .insight-card:hover {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }
        .insight-card h4 {
            margin-top: 0;
        }
        .sidebar {
            position: sticky;
            top: 24px;
            align-self: start;
        }
        .sidebar-card {
            background: #f8faff;
            border-radius: 16px;
            padding: 20px 18px;
            margin-bottom: 24px;
            border: 1px solid #e8eef5;
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #0b1a2e;
            margin-bottom: 14px;
            border-bottom: 2px solid #e8b830;
            padding-bottom: 8px;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
        }
        .sidebar-link-list li {
            margin-bottom: 10px;
        }
        .sidebar-link-list a {
            text-decoration: none;
            color: #1d3a5c;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .sidebar-link-list a:hover {
            background: #eef2f9;
            color: #b22234;
        }
        .sidebar-link-list i {
            color: #e8b830;
            width: 18px;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 0 0 20px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 1px solid #dce3ed;
            border-radius: 30px;
            font-size: 15px;
            outline: none;
            transition: border 0.2s, box-shadow 0.2s;
            background: #f9fbfd;
        }
        .search-form input:focus {
            border-color: #e8b830;
            box-shadow: 0 0 0 3px rgba(232, 184, 48, 0.15);
        }
        .search-form button {
            background: #0b1a2e;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 12px 22px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #1d3a5c;
        }
        .search-form button:active {
            transform: scale(0.97);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 32px 0 20px;
            padding: 24px 0;
            border-top: 2px solid #eef0f5;
        }
        .feedback-card {
            background: #f9fbfe;
            border-radius: 16px;
            padding: 20px 22px;
            border: 1px solid #e6ecf5;
        }
        .feedback-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: #0b1a2e;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card h3 i {
            color: #e8b830;
        }
        .feedback-form textarea,
        .feedback-form input,
        .rating-form select,
        .rating-form input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid #dce3ed;
            border-radius: 12px;
            font-size: 15px;
            outline: none;
            background: #fff;
            transition: border 0.2s;
            margin-bottom: 12px;
            font-family: inherit;
        }
        .feedback-form textarea:focus,
        .feedback-form input:focus,
        .rating-form select:focus {
            border-color: #e8b830;
            box-shadow: 0 0 0 3px rgba(232, 184, 48, 0.1);
        }
        .feedback-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-form button,
        .rating-form button {
            background: #0b1a2e;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
        }
        .feedback-form button:hover,
        .rating-form button:hover {
            background: #1d3a5c;
        }
        .feedback-form button:active,
        .rating-form button:active {
            transform: scale(0.97);
        }
        .star-rating {
            display: flex;
            gap: 4px;
            font-size: 22px;
            color: #dce3ed;
            margin-bottom: 12px;
            cursor: pointer;
        }
        .star-rating i.active {
            color: #e8b830;
        }
        .star-rating i:hover,
        .star-rating i.hover {
            color: #f5d060;
        }
        friend-link {
            display: block;
            padding: 20px 0 10px;
            border-top: 2px solid #eef0f5;
            margin-top: 20px;
            font-size: 14px;
        }
        friend-link::before {
            content: "🔗 Friends & Resources";
            display: block;
            font-weight: 700;
            font-size: 16px;
            color: #0b1a2e;
            margin-bottom: 12px;
        }
        friend-link a {
            color: #1d5a8e;
            text-decoration: none;
            margin-right: 18px;
            display: inline-block;
            padding: 4px 0;
        }
        friend-link a:hover {
            text-decoration: underline;
            color: #b22234;
        }
        .footer {
            padding: 20px 0 12px;
            border-top: 2px solid #eef0f5;
            margin-top: 12px;
            font-size: 14px;
            color: #5a6a7a;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .footer .copyright {
            font-weight: 500;
        }
        .footer .copyright i {
            color: #b22234;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .sidebar {
                position: static;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 16px 16px 8px;
                border-radius: 20px;
                margin-top: 12px;
            }
            .header {
                flex-wrap: nowrap;
            }
            .nav-toggle {
                display: block;
            }
            .navbar {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px 20px 20px;
                border-radius: 0 0 20px 20px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                z-index: 50;
                border: 1px solid #eef0f5;
                gap: 4px;
            }
            .navbar.open {
                display: flex;
            }
            .navbar a {
                padding: 10px 12px;
                font-size: 16px;
                width: 100%;
            }
            .hero-overlay {
                padding: 16px 18px;
            }
            .hero-overlay h1 {
                font-size: 22px;
            }
            .hero-overlay p {
                font-size: 14px;
            }
            .last-updated {
                font-size: 12px;
            }
            .skin-table {
                font-size: 13px;
                display: block;
                overflow-x: auto;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            .footer {
                flex-direction: column;
                text-align: center;
            }
            friend-link a {
                display: block;
                margin-bottom: 6px;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 20px;
            }
            .my-logo i {
                font-size: 20px;
            }
            .breadcrumb {
                font-size: 12px;
                gap: 4px 8px;
            }
            .main-article p {
                font-size: 15px;
            }
            .highlight-box {
                padding: 14px 16px;
            }
            .feedback-card {
                padding: 16px;
            }
            .star-rating {
                font-size: 18px;
            }
        }
        .emoji-lg {
            font-size: 1.4em;
            line-height: 1;
        }
        .text-accent {
            color: #b22234;
            font-weight: 600;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .gap-4 {
            gap: 4px;
        }
        html {
            scroll-behavior: smooth;
        }
        .schema-hidden {
            display: none;
        }