*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8f7f4;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #2a6f97;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1a4b6b;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: #0f1e2e;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #2a6f97;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #2a6f97;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2a4a6a;
        }
        p {
            margin-bottom: 1.25rem;
            font-size: 1.05rem;
        }
        blockquote {
            border-left: 4px solid #2a6f97;
            background: #eef3f7;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #1e3a5f;
        }
        hr {
            border: none;
            height: 2px;
            background: linear-gradient(90deg, #2a6f97, transparent);
            margin: 2.5rem 0;
        }
        .container {
            max-width: 960px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .site-header {
            background: #ffffff;
            border-radius: 0 0 20px 20px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            padding: 0.8rem 1.5rem;
            margin-bottom: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #0f1e2e;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: #2a6f97;
            font-size: 2rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #1a4b6b;
        }
        .my-logo span {
            background: linear-gradient(135deg, #2a6f97, #4a9bc7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e2a3a;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #eef3f7;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .nav-menu a {
            font-weight: 600;
            color: #1e2a3a;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
            font-size: 0.95rem;
        }
        .nav-menu a:hover {
            background: #2a6f97;
            color: #ffffff;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 0.4rem;
        }
        .breadcrumb {
            background: #ffffff;
            padding: 0.6rem 1.2rem;
            border-radius: 30px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
            margin-bottom: 1.5rem;
            font-size: 0.9rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.3rem;
        }
        .breadcrumb a {
            color: #2a6f97;
        }
        .breadcrumb i {
            color: #8ba0b3;
            font-size: 0.7rem;
            margin: 0 0.2rem;
        }
        .breadcrumb .current {
            color: #1e2a3a;
            font-weight: 600;
        }
        .article-wrapper {
            background: #ffffff;
            border-radius: 24px;
            padding: 2rem 2.5rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            margin-bottom: 2rem;
        }
        .article-wrapper .last-updated {
            display: block;
            font-size: 0.85rem;
            color: #6b7f93;
            margin-bottom: 1.5rem;
            text-align: right;
            border-bottom: 1px solid #e8edf2;
            padding-bottom: 0.6rem;
        }
        .article-wrapper .last-updated i {
            margin-right: 0.4rem;
        }
        .featured-image {
            margin: 1.8rem 0 2.2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #4a5f73;
            background: #f4f7fa;
            font-style: italic;
        }
        .interactive-section {
            background: #f4f7fa;
            border-radius: 20px;
            padding: 2rem 2.2rem;
            margin: 2.5rem 0;
            border: 1px solid #e0e7ed;
        }
        .interactive-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .interactive-section form {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1rem;
            align-items: center;
        }
        .interactive-section input,
        .interactive-section textarea,
        .interactive-section select {
            padding: 0.7rem 1.2rem;
            border: 2px solid #dce3e9;
            border-radius: 30px;
            font-size: 1rem;
            font-family: inherit;
            background: #ffffff;
            transition: border-color 0.2s, box-shadow 0.2s;
            flex: 1 1 200px;
        }
        .interactive-section input:focus,
        .interactive-section textarea:focus,
        .interactive-section select:focus {
            outline: none;
            border-color: #2a6f97;
            box-shadow: 0 0 0 4px rgba(42, 111, 151, 0.12);
        }
        .interactive-section textarea {
            min-height: 80px;
            border-radius: 16px;
            width: 100%;
            flex-basis: 100%;
        }
        .interactive-section button {
            background: #2a6f97;
            color: #ffffff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .interactive-section button:hover {
            background: #1a4b6b;
            transform: scale(1.02);
        }
        .interactive-section button i {
            font-size: 1.1rem;
        }
        .score-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #d4a84b;
            cursor: pointer;
            flex-wrap: wrap;
        }
        .score-stars i {
            transition: transform 0.15s, color 0.15s;
        }
        .score-stars i:hover {
            transform: scale(1.2);
            color: #f0c75e;
        }
        friend-link {
            display: block;
            background: #ffffff;
            border-radius: 20px;
            padding: 1.8rem 2.2rem;
            margin: 2rem 0 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8edf2;
        }
        friend-link::before {
            content: "🔗 Friend Links";
            display: block;
            font-size: 1.3rem;
            font-weight: 700;
            color: #0f1e2e;
            margin-bottom: 1rem;
            letter-spacing: -0.3px;
        }
        friend-link a {
            display: inline-block;
            margin: 0.3rem 1.2rem 0.3rem 0;
            padding: 0.3rem 0.8rem;
            background: #f4f7fa;
            border-radius: 20px;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        friend-link a:hover {
            background: #2a6f97;
            color: #fff;
            text-decoration: none;
        }
        .site-footer {
            background: #0f1e2e;
            color: #c8d6e5;
            border-radius: 24px 24px 0 0;
            padding: 2rem 2.5rem 1.5rem;
            margin-top: 2rem;
            text-align: center;
        }
        .site-footer .copyright {
            font-size: 0.9rem;
            opacity: 0.8;
            margin-top: 1rem;
        }
        .site-footer .copyright i {
            margin-right: 0.4rem;
        }
        .site-footer a {
            color: #7ab7d9;
        }
        .site-footer a:hover {
            color: #a8d4ed;
        }
        @media (max-width: 768px) {
            .site-header {
                padding: 0.6rem 1rem;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding-top: 1rem;
                gap: 0.4rem;
                border-top: 2px solid #eef3f7;
                margin-top: 0.8rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.5rem 0.8rem;
                width: 100%;
                border-radius: 8px;
            }
            .article-wrapper {
                padding: 1.2rem 1.2rem;
            }
            .article-wrapper h1 {
                font-size: 1.8rem;
            }
            .article-wrapper h2 {
                font-size: 1.4rem;
                padding-left: 0.7rem;
            }
            .article-wrapper h3 {
                font-size: 1.15rem;
            }
            .interactive-section {
                padding: 1.2rem 1.2rem;
            }
            .interactive-section form {
                flex-direction: column;
            }
            .interactive-section input,
            .interactive-section textarea,
            .interactive-section select {
                width: 100%;
                flex-basis: auto;
            }
            .site-footer {
                padding: 1.5rem 1.2rem 1rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
                padding: 0.4rem 1rem;
            }
            .score-stars {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.5rem;
            }
            friend-link {
                padding: 1.2rem 1.2rem;
            }
        }
        @media (max-width: 420px) {
            body {
                padding: 0 0.5rem;
            }
            .article-wrapper {
                padding: 0.8rem 0.8rem;
                border-radius: 16px;
            }
            .article-wrapper h1 {
                font-size: 1.5rem;
            }
            .article-wrapper h2 {
                font-size: 1.2rem;
            }
            .breadcrumb {
                flex-wrap: wrap;
                font-size: 0.75rem;
            }
        }
        .text-highlight {
            background: linear-gradient(120deg, #f4f7fa 0%, #e2ebf3 100%);
            padding: 0.1rem 0.6rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .emoji-lg {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .flex-cols {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .flex-cols>div {
            flex: 1 1 260px;
        }
        .card-simple {
            background: #fafbfc;
            border-radius: 16px;
            padding: 1.3rem 1.5rem;
            border: 1px solid #e8edf2;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .card-simple:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
        }
        .card-simple i {
            font-size: 1.8rem;
            color: #2a6f97;
            margin-bottom: 0.6rem;
            display: inline-block;
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 1rem;
            background: #2a6f97;
            color: #fff;
            padding: 0.5rem 1.2rem;
            border-radius: 30px;
            z-index: 1000;
            font-weight: 600;
        }
        .skip-link:focus {
            top: 0.5rem;
        }