*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fa;
            color: #1a2634;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #0a66c2;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #003b7a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 0;
            background: #0a66c2;
            color: #fff;
            padding: 12px 24px;
            z-index: 1000;
            font-weight: 700;
            transition: top 0.2s;
        }
        .skip-link:focus {
            top: 0;
        }
        header {
            background: linear-gradient(135deg, #0a1428 0%, #1a2a4a 50%, #0d1b2a 100%);
            color: #fff;
            padding: 12px 0;
            border-bottom: 3px solid #c8aa6e;
            position: sticky;
            top: 0;
            z-index: 999;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #f0e6d3, #c8aa6e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #c8aa6e;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo span {
            font-weight: 400;
            font-size: 0.9rem;
            -webkit-text-fill-color: #a0b4c8;
            letter-spacing: 0.3px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        nav a {
            color: #dce6f0;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        nav a:hover,
        nav a:focus-visible {
            background: rgba(200, 170, 110, 0.2);
            color: #f0e6d3;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: #f0e6d3;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(200, 170, 110, 0.15);
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~.nav-links {
            display: flex;
            flex-direction: column;
            width: 100%;
            background: #0d1b2a;
            padding: 16px 0 20px;
            border-top: 1px solid rgba(200, 170, 110, 0.3);
            margin-top: 12px;
        }
        #nav-toggle:checked~.nav-links a {
            padding: 12px 24px;
            border-radius: 0;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 8px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0d7de;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #6b7a8a;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #0a66c2;
        }
        .breadcrumb .current {
            color: #4a5a6a;
            font-weight: 600;
        }
        main {
            flex: 1;
            padding: 32px 0 48px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 36px;
        }
        @media(max-width:900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0a1428;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }
        .article-body h1 i {
            color: #c8aa6e;
            margin-right: 8px;
        }
        .article-body .subhead {
            font-size: 1.1rem;
            color: #4a5a6a;
            margin-bottom: 20px;
            border-left: 4px solid #c8aa6e;
            padding-left: 16px;
        }
        .last-updated {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: #6b7a8a;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .last-updated i {
            color: #c8aa6e;
        }
        .last-updated strong {
            color: #1a2634;
        }
        section {
            margin-bottom: 40px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0a1428;
            margin: 32px 0 12px;
            padding-bottom: 6px;
            border-bottom: 2px solid #c8aa6e;
            display: inline-block;
        }
        h2 i {
            color: #c8aa6e;
            margin-right: 10px;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1a2a4a;
            margin: 24px 0 10px;
        }
        h3 i {
            color: #6b7a8a;
            margin-right: 8px;
            font-size: 1.1rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2a3a5a;
            margin: 18px 0 6px;
            padding-left: 8px;
            border-left: 3px solid #c8aa6e;
        }
        p {
            margin-bottom: 16px;
            font-size: 1rem;
            color: #1e2a3a;
        }
        .highlight-box {
            background: #eef3f9;
            border-left: 5px solid #c8aa6e;
            padding: 18px 22px;
            border-radius: 8px;
            margin: 20px 0;
            font-style: normal;
        }
        .highlight-box strong {
            color: #0a1428;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .stat-card {
            background: #fff;
            padding: 20px 16px;
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            text-align: center;
            border: 1px solid #e0e7ef;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #0a66c2;
            display: block;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #6b7a8a;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .stat-card i {
            font-size: 1.6rem;
            color: #c8aa6e;
            margin-bottom: 6px;
        }
        .feature-img-wrapper {
            margin: 24px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .feature-img-wrapper img {
            width: 100%;
            height: auto;
            display: block;
        }
        .feature-img-wrapper figcaption {
            background: #eef3f9;
            padding: 10px 16px;
            font-size: 0.85rem;
            color: #4a5a6a;
            text-align: center;
        }
        .tip-list {
            list-style: none;
            padding: 0;
        }
        .tip-list li {
            padding: 10px 0 10px 32px;
            position: relative;
            border-bottom: 1px solid #e0e7ef;
        }
        .tip-list li::before {
            content: "⚡";
            position: absolute;
            left: 0;
            top: 10px;
            font-size: 1.1rem;
        }
        .tip-list li strong {
            color: #0a1428;
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #e0e7ef;
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #c8aa6e;
            padding-bottom: 8px;
            display: inline-block;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .sidebar ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f0f3f7;
        }
        .sidebar ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #1a2a4a;
            font-size: 0.9rem;
        }
        .sidebar ul li a i {
            color: #c8aa6e;
            width: 18px;
            text-align: center;
        }
        .sidebar ul li a:hover {
            color: #0a66c2;
        }
        .interactive-modules {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 36px 0;
        }
        @media(max-width:600px) {
            .interactive-modules {
                grid-template-columns: 1fr;
            }
        }
        .module-card {
            background: #fff;
            border-radius: 14px;
            padding: 22px 20px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #e0e7ef;
        }
        .module-card h4 {
            margin-top: 0;
            border-left-color: #0a66c2;
            font-size: 1.1rem;
        }
        .module-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .module-card input,
        .module-card textarea,
        .module-card select {
            padding: 10px 14px;
            border: 1px solid #d0d7de;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #fafcff;
            transition: border 0.2s;
        }
        .module-card input:focus,
        .module-card textarea:focus,
        .module-card select:focus {
            border-color: #0a66c2;
            outline: none;
            box-shadow: 0 0 0 3px rgba(10, 102, 194, 0.15);
        }
        .module-card textarea {
            resize: vertical;
            min-height: 70px;
        }
        .module-card .btn {
            background: #0a1428;
            color: #f0e6d3;
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            justify-content: center;
        }
        .module-card .btn:hover {
            background: #1a2a4a;
            transform: scale(1.01);
        }
        .module-card .btn i {
            color: #c8aa6e;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            cursor: pointer;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #d0d7de;
            transition: color 0.15s;
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
        }
        footer {
            background: #0a1428;
            color: #b0c4d8;
            padding: 40px 0 20px;
            border-top: 3px solid #c8aa6e;
            margin-top: 20px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        @media(max-width:700px) {
            footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        footer h4 {
            color: #f0e6d3;
            border-left-color: #c8aa6e;
            margin-bottom: 12px;
            font-size: 1rem;
        }
        footer a {
            color: #b0c4d8;
        }
        footer a:hover {
            color: #f0e6d3;
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            padding: 4px 0;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(200, 170, 110, 0.2);
            padding-top: 20px;
            margin-top: 12px;
            text-align: center;
            font-size: 0.85rem;
            color: #8a9aaa;
        }
        .copyright strong {
            color: #c8aa6e;
        }
        @media(max-width:768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: inline-block;
            }
            .nav-links {
                display: none;
                width: 100%;
            }
            .nav-links a {
                padding: 12px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            #nav-toggle:checked~.nav-links {
                display: flex;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .sidebar {
                position: static;
            }
        }
        @media(max-width:480px) {
            .container {
                padding: 0 16px;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo span {
                font-size: 0.7rem;
            }
        }
        .emoji-big {
            font-size: 2rem;
            line-height: 1;
        }
        .text-muted {
            color: #6b7a8a;
            font-size: 0.9rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .author-bio {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #eef3f9;
            padding: 16px 20px;
            border-radius: 12px;
            margin: 20px 0;
        }
        .author-bio .avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #c8aa6e, #0a1428);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.6rem;
            flex-shrink: 0;
        }
        .author-bio .info strong {
            display: block;
            font-size: 1rem;
        }
        .author-bio .info .meta {
            font-size: 0.85rem;
            color: #6b7a8a;
        }
        .schema-hidden {
            display: none;
        }