*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f7fb;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1e40af;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #0f172a;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #3b82f6;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: 1rem 0 1.5rem 2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        hr {
            border: 0;
            border-top: 2px solid #e2e8f0;
            margin: 2.5rem 0;
        }
        strong {
            color: #0f172a;
        }
        blockquote {
            background: #eef2ff;
            border-left: 5px solid #3b82f6;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #1e293b;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
            color: #fff;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover {
            color: #facc15;
            text-decoration: none;
        }
        .my-logo i {
            color: #facc15;
            font-size: 2rem;
        }
        .my-logo span {
            font-size: 0.75rem;
            font-weight: 400;
            color: #94a3b8;
            display: block;
            line-height: 1.2;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #facc15;
            color: #facc15;
        }
        .primary-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .primary-nav a {
            color: #e2e8f0;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.2s ease;
        }
        .primary-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #facc15;
            text-decoration: none;
        }
        .primary-nav a i {
            margin-right: 0.3rem;
        }
        .breadcrumb {
            background: #e9edf4;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d1d9e6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #64748b;
            margin-right: 0.5rem;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #dbeafe, #eff6ff);
            padding: 3rem 0 2.5rem;
            border-radius: 0 0 40px 40px;
            margin-bottom: 2rem;
        }
        .hero h1 {
            font-size: 2.6rem;
            color: #0f172a;
            margin-bottom: 0.6rem;
        }
        .hero p {
            font-size: 1.2rem;
            color: #334155;
            max-width: 780px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.8rem;
            margin-top: 1.2rem;
            font-size: 0.95rem;
            color: #475569;
        }
        .hero-meta i {
            color: #3b82f6;
            margin-right: 0.4rem;
        }
        .search-section {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin-bottom: 2.5rem;
        }
        .search-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 0.9rem 1.2rem;
            border: 2px solid #d1d9e6;
            border-radius: 10px;
            font-size: 1rem;
            background: #f8fafc;
            transition: 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #3b82f6;
            outline: none;
            background: #fff;
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
        }
        .search-form button {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #1e40af;
            transform: translateY(-1px);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        .main-content {
            background: #fff;
            border-radius: 20px;
            padding: 2.5rem 2.8rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.6rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            margin-bottom: 1.8rem;
        }
        .sidebar-card h4 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.6rem;
            margin-bottom: 1rem;
        }
        .sidebar-card ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 0.6rem;
        }
        .sidebar-card a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 0;
            border-bottom: 1px solid #f1f5f9;
            font-size: 0.95rem;
        }
        .sidebar-card a i {
            color: #3b82f6;
            width: 1.2rem;
            text-align: center;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            background: #eef2ff;
            padding: 1rem;
        }
        .featured-image img {
            width: 100%;
            border-radius: 12px;
        }
        .featured-image figcaption {
            padding: 0.8rem 0.3rem 0.2rem;
            font-size: 0.9rem;
            color: #64748b;
            text-align: center;
            font-style: italic;
        }
        .rating-section {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 2.5rem 0;
            border: 1px solid #e2e8f0;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #cbd5e1;
            cursor: pointer;
            transition: 0.2s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #facc15;
        }
        .rating-stars i {
            transition: 0.15s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 1rem;
        }
        .rating-form input,
        .rating-form textarea {
            padding: 0.8rem 1rem;
            border: 2px solid #d1d9e6;
            border-radius: 10px;
            font-size: 1rem;
            background: #fff;
        }
        .rating-form button {
            align-self: flex-start;
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .rating-form button:hover {
            background: #1e40af;
        }
        .comments-section {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 2px solid #e2e8f0;
        }
        .comment-item {
            background: #f8fafc;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            margin-bottom: 1rem;
            border-left: 4px solid #3b82f6;
        }
        .comment-item .meta {
            font-size: 0.85rem;
            color: #64748b;
            display: flex;
            gap: 1rem;
            margin-bottom: 0.3rem;
        }
        .comment-item .meta strong {
            color: #0f172a;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 1.5rem;
        }
        .comment-form input,
        .comment-form textarea {
            padding: 0.8rem 1rem;
            border: 2px solid #d1d9e6;
            border-radius: 10px;
            font-size: 1rem;
            background: #fff;
        }
        .comment-form button {
            align-self: flex-start;
            background: #0f172a;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .comment-form button:hover {
            background: #1e293b;
        }
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
            border-radius: 40px 40px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #f1f5f9;
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid #1e293b;
            padding-bottom: 0.5rem;
        }
        .footer-inner a {
            color: #94a3b8;
            display: block;
            padding: 0.2rem 0;
        }
        .footer-inner a:hover {
            color: #facc15;
        }
        friend-link {
            display: block;
            margin: 0.8rem 0;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            padding: 0.2rem 0;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #1e293b;
            font-size: 0.9rem;
            color: #64748b;
        }
        .copyright a {
            color: #94a3b8;
            display: inline;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .main-content {
                padding: 1.8rem 1.2rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 720px) {
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: rgba(15, 23, 42, 0.98);
                padding: 1rem 0.5rem;
                border-radius: 12px;
                margin-top: 0.8rem;
                gap: 0.2rem;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 0.7rem 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .header-inner {
                position: relative;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .hero {
                padding: 2rem 0 1.5rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.9rem;
            }
            .main-content {
                padding: 1.2rem 0.9rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.25rem;
                padding-left: 0.6rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo span {
                font-size: 0.65rem;
            }
        }
        .text-muted {
            color: #64748b;
        }
        .flex {
            display: flex;
        }
        .gap-1 {
            gap: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .tag {
            display: inline-block;
            background: #dbeafe;
            color: #1e40af;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }