*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #0a1f44;
            --primary-light: #1a3a6b;
            --accent: #f5a623;
            --accent-hover: #e09612;
            --bg: #f7f9fc;
            --card-bg: #ffffff;
            --text: #1a1a2e;
            --text-light: #4a4a6a;
            --border: #dce1e8;
            --radius: 12px;
            --shadow: 0 8px 32px rgba(10, 31, 68, 0.08);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-bg: linear-gradient(135deg, #0a1f44 0%, #1a3a6b 100%);
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--header-bg);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            padding: 6px 18px;
            border-radius: 40px;
            border: 2px solid rgba(255, 255, 255, 0.15);
            transition: 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: var(--accent);
            color: #fff;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .main-nav {
            display: flex;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: rgba(255, 255, 255, 0.85);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .main-nav a.active {
            background: var(--accent);
            color: #0a1f44;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-check {
            display: none;
        }
        .breadcrumb {
            background: #eef2f7;
            padding: 12px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid var(--border);
        }
        .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: #999;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb .current {
            color: var(--text-light);
            font-weight: 500;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        @media(max-width:992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .article-body h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--primary);
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--accent);
        }
        .article-body h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary-light);
            margin: 32px 0 12px;
        }
        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            margin: 24px 0 8px;
        }
        .article-body p {
            margin-bottom: 18px;
            color: var(--text);
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 22px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body strong {
            color: var(--primary);
        }
        .article-body .highlight-box {
            background: #f0f4fe;
            border-left: 5px solid var(--accent);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .article-body .highlight-box p {
            margin: 0;
        }
        .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 30px;
            color: var(--text-light);
            font-size: 0.9rem;
            margin: 8px 0 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .meta-line i {
            margin-right: 6px;
            color: var(--accent);
        }
        .featured-image {
            margin: 24px 0 32px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            background: #fff;
            padding: 12px 18px;
            font-size: 0.85rem;
            color: var(--text-light);
            border-bottom: 1px solid var(--border);
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px;
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card a {
            display: block;
            padding: 8px 12px;
            background: #f4f6fa;
            border-radius: 8px;
            font-size: 0.9rem;
            transition: 0.2s;
            border-left: 3px solid transparent;
        }
        .sidebar-card a:hover {
            background: #e8edf6;
            border-left-color: var(--accent);
            color: var(--primary);
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 16px 0;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.3s;
            background: #fff;
        }
        .search-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.12);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0 26px;
            border-radius: 40px;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-form button:hover {
            background: var(--primary-light);
        }
        .feedback-section {
            margin-top: 50px;
            padding-top: 36px;
            border-top: 2px solid var(--border);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        @media(max-width:700px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px;
        }
        .feedback-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card label {
            display: block;
            font-weight: 600;
            margin: 12px 0 4px;
            font-size: 0.9rem;
            color: var(--text);
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.25s;
            background: #fff;
            font-family: var(--font);
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.1);
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: var(--accent);
            color: #0a1f44;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            margin-top: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card .btn-submit:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.3);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 4px;
            justify-content: flex-end;
            margin: 6px 0 10px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: 0.2s;
            padding: 2px;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--accent);
        }
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 28px;
            margin-top: 60px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        @media(max-width:768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding-top: 12px;
            }
            .hamburger {
                display: block;
            }
            .nav-check:checked~.main-nav {
                display: flex;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
            font-weight: 700;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            display: inline-block;
            margin-bottom: 6px;
            font-size: 0.9rem;
        }
        .site-footer a:hover {
            color: var(--accent);
        }
        .site-footer .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        friend-link {
            display: block;
            margin: 12px 0 4px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 16px;
            margin-bottom: 6px;
            padding: 4px 0;
        }
        @media(min-width:769px) {
            .hamburger {
                display: none !important;
            }
            .main-nav {
                display: flex !important;
            }
        }
        .article-body p,
        .article-body h2,
        .article-body h3,
        .article-body .highlight-box,
        .featured-image {
            animation: fadeUp 0.5s ease-out forwards;
            opacity: 0;
        }
        .article-body h2 {
            animation-delay: 0.05s;
        }
        .article-body h3 {
            animation-delay: 0.1s;
        }
        .article-body p {
            animation-delay: 0.15s;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #e8edf6;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            color: var(--text-light);
        }