*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --secondary: #004E89;
            --accent: #FFD166;
            --light: #F7F9FC;
            --dark: #1A1A2E;
            --gray: #6C757D;
            --border: #E0E0E0;
            --radius: 12px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --max-width: 1200px;
            --font-base: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-base);
            background: var(--light);
            color: var(--dark);
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: var(--secondary);
            text-decoration: underline;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--dark);
            color: #fff;
            padding: 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;
            padding: 14px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 1.5rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .nav-menu {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-menu a:hover {
            background: rgba(255, 107, 53, 0.2);
            border-color: var(--primary);
            color: #fff;
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 10px 20px;
            font-size: 0.85rem;
        }
        .breadcrumb-wrap .container {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb-wrap a {
            color: var(--gray);
            text-decoration: none;
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-wrap span {
            color: var(--gray);
        }
        .breadcrumb-wrap .current {
            color: var(--dark);
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media(max-width:992px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--dark);
            font-weight: 800;
        }
        .article-body h1 span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-body h2 {
            font-size: 1.8rem;
            margin-top: 48px;
            margin-bottom: 16px;
            color: var(--secondary);
            border-left: 5px solid var(--primary);
            padding-left: 16px;
            font-weight: 700;
        }
        .article-body h3 {
            font-size: 1.3rem;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--dark);
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.1rem;
            margin-top: 24px;
            margin-bottom: 8px;
            color: var(--gray);
            font-weight: 600;
            font-style: italic;
        }
        .article-body p {
            margin-bottom: 16px;
            color: #2d2d3a;
            font-size: 1.02rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 24px;
            color: #2d2d3a;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body .highlight-box {
            background: #fff;
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            border-left: 6px solid var(--primary);
            margin: 28px 0;
        }
        .article-body .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 30px;
            align-items: center;
            padding: 16px 0 24px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 24px;
            font-size: 0.95rem;
            color: var(--gray);
        }
        .meta-info .updated {
            font-weight: 600;
            color: var(--dark);
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 14px;
            color: var(--secondary);
            font-weight: 700;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card ul li a {
            text-decoration: none;
            font-size: 0.95rem;
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
        }
        .featured-img {
            margin: 28px 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .featured-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .featured-img figcaption {
            padding: 12px 18px;
            background: #fff;
            font-size: 0.9rem;
            color: var(--gray);
            border-top: 1px solid var(--border);
        }
        .search-section {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: var(--shadow);
            margin: 40px 0 20px;
        }
        .search-section h3 {
            font-size: 1.3rem;
            margin-bottom: 14px;
            color: var(--secondary);
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 1rem;
            transition: var(--transition);
            outline: none;
        }
        .search-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.1);
        }
        .search-form button {
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0;
        }
        @media(max-width:768px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: var(--shadow);
        }
        .feedback-card h3 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: var(--transition);
            outline: none;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.08);
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card button {
            padding: 12px 24px;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .feedback-card button:hover {
            background: #003b6f;
            transform: translateY(-2px);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating-stars .star.active {
            color: #FFB800;
        }
        .rating-stars .star {
            transition: var(--transition);
        }
        .rating-stars .star:hover {
            transform: scale(1.2);
        }
        footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 40px 20px 20px;
            margin-top: 60px;
        }
        footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        @media(max-width:768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
            font-weight: 600;
        }
        footer a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
            display: inline-block;
            margin-bottom: 6px;
        }
        footer a:hover {
            color: var(--primary);
        }
        friend-link {
            display: block;
            padding: 16px 20px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 12px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 20px;
            margin-bottom: 6px;
            padding: 4px 0;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
        }
        @media(max-width:768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 16px 0 8px;
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                padding: 10px 16px;
                border-radius: 8px;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .meta-info {
                flex-direction: column;
                gap: 8px;
            }
        }
        @media(min-width:769px) {
            .nav-menu {
                display: flex !important;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 20px;
        }
        .mb-2 {
            margin-bottom: 20px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .badge {
            display: inline-block;
            background: var(--accent);
            color: var(--dark);
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
        }