* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1e3c5c;
            --primary-light: #2a4f6e;
            --secondary: #f0b132;
            --accent: #d92b2b;
            --bg: #f5f7fa;
            --card-bg: #ffffff;
            --text: #1a1a2e;
            --text-light: #4a4a5a;
            --border: #e0e3e8;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --radius: 12px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--primary);
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--secondary), #ffdd77);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: inline-block;
            transition: var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.02);
            opacity: 0.9;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--secondary);
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #e8edf3;
            padding: 8px 16px;
            border-radius: 6px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        nav a:hover,
        nav a.active {
            background: rgba(255, 255, 255, 0.12);
            color: var(--secondary);
        }
        .breadcrumb {
            background: #eef1f5;
            padding: 10px 0;
            font-size: 0.85rem;
            color: var(--text-light);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 6px;
            color: #999;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, #0f1f2f 100%);
            color: #fff;
            padding: 48px 0 40px;
            border-radius: 0 0 var(--radius) var(--radius);
            margin-bottom: 32px;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero h1 i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .hero p {
            font-size: 1.15rem;
            opacity: 0.9;
            max-width: 760px;
            margin-bottom: 8px;
        }
        .hero .meta {
            font-size: 0.9rem;
            opacity: 0.7;
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .hero .meta i {
            margin-right: 6px;
        }
        .search-bar {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            margin-bottom: 32px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        .search-bar input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 1.5px solid var(--border);
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-bar input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 60, 92, 0.1);
        }
        .search-bar button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-bar button:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            margin-bottom: 40px;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            min-width: 0;
        }
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 36px;
            box-shadow: var(--shadow);
            margin-bottom: 28px;
        }
        .article-card h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--primary);
            margin: 28px 0 14px;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 8px;
            display: inline-block;
        }
        .article-card h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary-light);
            margin: 24px 0 12px;
        }
        .article-card h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            margin: 18px 0 8px;
        }
        .article-card p {
            margin-bottom: 16px;
            color: var(--text-light);
        }
        .article-card strong {
            color: var(--text);
        }
        .article-card ul,
        .article-card ol {
            margin: 12px 0 18px 24px;
            color: var(--text-light);
        }
        .article-card li {
            margin-bottom: 8px;
        }
        .article-card .feature-img {
            margin: 24px 0 20px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        }
        .article-card .feature-img img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .article-card .feature-img figcaption {
            padding: 10px 16px;
            font-size: 0.85rem;
            color: var(--text-light);
            background: #f0f2f5;
            font-style: italic;
        }
        .highlight-box {
            background: #fdf8ed;
            border-left: 4px solid var(--secondary);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
        }
        .highlight-box strong {
            color: var(--primary);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.95rem;
        }
        .data-table th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--border);
        }
        .data-table tr:nth-child(even) {
            background: #f8f9fb;
        }
        .data-table tr:hover {
            background: #eef3f8;
        }
        .insight-badge {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .sidebar-widget {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 22px 24px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .sidebar-widget h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 8px;
        }
        .sidebar-widget ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-widget ul li {
            margin-bottom: 10px;
        }
        .sidebar-widget ul li a {
            display: block;
            padding: 6px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .sidebar-widget ul li a:hover {
            padding-left: 6px;
            color: var(--secondary);
        }
        .sidebar-widget ul li a i {
            color: var(--secondary);
            margin-right: 8px;
            font-size: 0.8rem;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 28px 0;
        }
        .feedback-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
        }
        .feedback-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card input,
        .feedback-card textarea {
            width: 100%;
            padding: 10px 14px;
            border: 1.5px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
            font-family: var(--font);
            margin-bottom: 12px;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 60, 92, 0.08);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .feedback-card button:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin-bottom: 14px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--secondary);
        }
        .star-rating label i {
            pointer-events: none;
        }
        footer {
            background: var(--primary);
            color: #ccd5e0;
            padding: 40px 0 20px;
            margin-top: 40px;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
            font-weight: 600;
        }
        footer a {
            color: #b0c4d8;
        }
        footer a:hover {
            color: var(--secondary);
        }
        footer ul {
            list-style: none;
            padding: 0;
        }
        footer ul li {
            margin-bottom: 8px;
        }
        footer ul li a {
            font-size: 0.9rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.06);
            padding: 18px 24px;
            border-radius: 10px;
            margin-bottom: 20px;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: var(--secondary);
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.8;
        }
        .copyright i {
            margin: 0 4px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            footer .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 0;
            }
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding: 12px 0 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 8px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 12px;
                width: 100%;
                border-radius: 6px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .article-card {
                padding: 20px 18px;
            }
            .article-card h2 {
                font-size: 1.5rem;
            }
            .article-card h3 {
                font-size: 1.2rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .search-bar {
                padding: 16px 18px;
            }
            .search-bar input {
                min-width: 140px;
            }
            .data-table {
                font-size: 0.8rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.4rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 12px;
            }
            .article-card {
                padding: 14px 12px;
            }
            .sidebar-widget {
                padding: 16px 14px;
            }
            .feedback-card {
                padding: 16px 14px;
            }
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .text-center {
            text-align: center;
        }
        .gap-sm {
            gap: 8px;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .align-center {
            align-items: center;
        }