*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f7f9fc;
            color: #1a1e2b;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus-visible {
            color: #1e40af;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #0b1120;
            margin-top: 1.2em;
            margin-bottom: 0.5em;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.2em;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid #d1d9e6;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0b1120 0%, #1a2744 100%);
            color: #fff;
            padding: 0.5rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0.6rem 0;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #facc15, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            transition: transform 0.2s ease;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #facc15;
            margin-right: 6px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.3rem;
            padding: 0;
            margin: 0;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: #e2e8f0;
            padding: 0.4rem 0.8rem;
            border-radius: 8px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-list li a:hover,
        .nav-list li a:focus-visible {
            background: rgba(255, 255, 255, 0.12);
            color: #facc15;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid #e2e8f0;
            color: #e2e8f0;
            font-size: 1.4rem;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e9edf4;
            padding: 0.6rem 0;
            font-size: 0.88rem;
            color: #4b5563;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #9ca3af;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb a:hover {
            color: #1e40af;
        }
        .breadcrumb .current {
            color: #374151;
            font-weight: 600;
        }
        main {
            flex: 1;
            padding: 1.8rem 0 2.5rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .content-main {
            min-width: 0;
        }
        .content-sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .search-box {
            background: #fff;
            border-radius: 14px;
            padding: 1.4rem 1.6rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            margin-bottom: 2rem;
            border: 1px solid #e2e8f0;
        }
        .search-box form {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .search-box input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1rem;
            border: 2px solid #d1d9e6;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-box input[type="text"]:focus {
            border-color: #2563eb;
        }
        .search-box button {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 0.7rem 1.4rem;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-box button:hover {
            background: #1e40af;
            transform: scale(1.02);
        }
        .featured-image {
            margin: 1.8rem 0 2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            background: #fff;
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.88rem;
            color: #4b5563;
            background: #f1f4f9;
            font-style: italic;
        }
        .interaction-panel {
            background: #fff;
            border-radius: 14px;
            padding: 1.6rem 1.8rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e2e8f0;
            margin: 2rem 0;
        }
        .interaction-panel h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .star-rating {
            display: flex;
            gap: 0.2rem;
            font-size: 1.6rem;
            color: #d1d9e6;
            cursor: pointer;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.15s;
            color: #d1d9e6;
            font-size: 1.7rem;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #facc15;
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.6rem;
        }
        .rating-form input[type="number"] {
            display: none;
        }
        .rating-form button {
            align-self: flex-start;
            background: #facc15;
            color: #0b1120;
            border: none;
            padding: 0.5rem 1.2rem;
            border-radius: 10px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
        }
        .rating-form button:hover {
            background: #eab308;
        }
        .comment-form textarea {
            width: 100%;
            min-height: 90px;
            padding: 0.8rem 1rem;
            border: 2px solid #d1d9e6;
            border-radius: 10px;
            font-size: 0.95rem;
            resize: vertical;
            font-family: inherit;
            transition: border 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #2563eb;
            outline: none;
        }
        .comment-form .form-actions {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            margin-top: 0.6rem;
        }
        .comment-form .form-actions button {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 0.5rem 1.4rem;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .comment-form .form-actions button:hover {
            background: #1e40af;
        }
        .comment-form .form-actions button[type="reset"] {
            background: #6b7280;
        }
        .comment-form .form-actions button[type="reset"]:hover {
            background: #4b5563;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.4rem 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e2e8f0;
            margin-bottom: 1.5rem;
        }
        .sidebar-card h3 {
            margin-top: 0;
            font-size: 1.15rem;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.4rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0.6rem 0 0;
        }
        .sidebar-card ul li {
            margin-bottom: 0.4rem;
            padding: 0.3rem 0;
            border-bottom: 1px solid #f1f4f9;
        }
        .sidebar-card ul li a {
            font-weight: 500;
            display: block;
            padding: 0.2rem 0;
        }
        .sidebar-card ul li a:hover {
            padding-left: 4px;
        }
        footer {
            background: #0b1120;
            color: #cbd5e1;
            padding: 2rem 0 1.2rem;
            margin-top: 2rem;
        }
        footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        footer h4 {
            color: #f1f5f9;
            margin-top: 0;
            margin-bottom: 0.6rem;
            font-size: 1.05rem;
        }
        footer a {
            color: #94a3b8;
        }
        footer a:hover {
            color: #facc15;
            text-decoration: none;
        }
        friend-link {
            display: block;
            margin: 0.6rem 0;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            padding: 0.2rem 0;
        }
        .copyright {
            text-align: center;
            border-top: 1px solid #1e293b;
            padding-top: 1.2rem;
            margin-top: 1.5rem;
            font-size: 0.85rem;
            color: #64748b;
        }
        .last-updated {
            display: inline-block;
            background: #1e293b;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            color: #94a3b8;
            margin-top: 0.4rem;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            footer .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a2744;
                padding: 0.8rem 0.4rem;
                border-radius: 12px;
                margin-top: 0.6rem;
                gap: 0.2rem;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .content-sidebar {
                grid-template-columns: 1fr;
            }
            footer .footer-inner {
                grid-template-columns: 1fr;
            }
            .search-box form {
                flex-direction: column;
            }
            .interaction-panel {
                padding: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .breadcrumb ol {
                font-size: 0.78rem;
            }
            .star-rating {
                font-size: 1.4rem;
            }
        }
        .text-muted {
            color: #6b7280;
            font-size: 0.9rem;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex {
            display: flex;
            gap: 0.6rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .badge {
            display: inline-block;
            background: #e2e8f0;
            padding: 0.15rem 0.6rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #1e293b;
        }
        .highlight {
            background: #fef9c3;
            padding: 0 0.2rem;
            border-radius: 4px;
        }
        blockquote {
            border-left: 4px solid #2563eb;
            padding: 0.6rem 1rem;
            margin: 1rem 0;
            background: #f1f4f9;
            border-radius: 0 10px 10px 0;
            font-style: italic;
            color: #374151;
        }
        .emoji-big {
            font-size: 1.6rem;
            line-height: 1;
        }
        hr {
            border: none;
            border-top: 2px solid #e2e8f0;
            margin: 1.8rem 0;
        }