*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a3c5e;
            --primary-light: #2a5a8a;
            --primary-dark: #0f2538;
            --accent: #e6b800;
            --accent-hover: #ffd633;
            --bg: #f5f2eb;
            --card-bg: #ffffff;
            --text: #1e1e1e;
            --text-light: #4a4a4a;
            --border: #d4cfc7;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 70px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding-top: var(--header-height);
        }
        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;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--primary-dark);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            gap: 20px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, #e6b800, #ffd633);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px rgba(230, 184, 0, 0.15);
            white-space: nowrap;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: var(--accent);
            font-size: 1.4rem;
        }
        .my-logo small {
            font-size: 0.55rem;
            font-weight: 400;
            -webkit-text-fill-color: initial;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 1px;
            margin-left: 4px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            transition: color 0.2s;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.25s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a:hover {
            color: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-overlay {
            display: none;
        }
        .breadcrumb {
            background: rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(4px);
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.85rem;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb span.sep {
            color: var(--text-light);
            margin: 0 4px;
        }
        .breadcrumb .current {
            color: var(--text-light);
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 50px 0 40px;
            color: #fff;
            text-align: center;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .hero h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 700px;
            margin: 0 auto 8px;
            opacity: 0.9;
        }
        .hero .meta {
            font-size: 0.9rem;
            opacity: 0.7;
            margin-top: 10px;
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .search-section {
            background: var(--card-bg);
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            border: 2px solid var(--border);
            border-radius: 50px;
            overflow: hidden;
            transition: border-color 0.3s;
            background: #fff;
        }
        .search-form:focus-within {
            border-color: var(--accent);
        }
        .search-form input {
            flex: 1;
            border: none;
            padding: 12px 20px;
            font-size: 1rem;
            outline: none;
            background: transparent;
            font-family: var(--font);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 24px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--primary-light);
        }
        .main-content {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 36px;
        }
        .article-body h2 {
            font-size: 1.9rem;
            margin-top: 48px;
            margin-bottom: 16px;
            color: var(--primary);
            border-bottom: 3px solid var(--accent);
            padding-bottom: 6px;
            display: inline-block;
        }
        .article-body h2:first-of-type {
            margin-top: 0;
        }
        .article-body h3 {
            font-size: 1.4rem;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--primary-light);
        }
        .article-body h4 {
            font-size: 1.15rem;
            margin-top: 24px;
            margin-bottom: 8px;
            color: var(--text);
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body strong {
            color: var(--primary-dark);
        }
        .article-body .highlight-box {
            background: #f0f7ff;
            border-left: 4px solid var(--primary-light);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 24px 0;
        }
        .article-body .tip-box {
            background: #fffbf0;
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 24px 0;
        }
        .article-body .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .article-body th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .article-body td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--border);
        }
        .article-body tr:nth-child(even) {
            background: #f9f7f4;
        }
        .featured-image {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image img {
            width: 100%;
            object-fit: cover;
            max-height: 420px;
        }
        .featured-image figcaption {
            padding: 10px 16px;
            background: #f0eeea;
            font-size: 0.85rem;
            color: var(--text-light);
            text-align: center;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px 20px;
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            color: var(--primary);
            margin-bottom: 14px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 6px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            font-size: 0.95rem;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }
        .sidebar-card a i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }
        .interaction-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid var(--border);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .comment-form,
        .rating-form {
            background: #f9f7f4;
            padding: 24px 28px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .comment-form h3,
        .rating-form h3 {
            font-size: 1.2rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-family: var(--font);
            font-size: 0.95rem;
            margin-bottom: 14px;
            transition: border-color 0.25s;
            outline: none;
            background: #fff;
        }
        .comment-form textarea:focus,
        .comment-form input:focus {
            border-color: var(--primary-light);
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-form button,
        .rating-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-form button:hover,
        .rating-form 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: 16px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.2s, transform 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--accent);
        }
        .star-rating label:hover {
            transform: scale(1.15);
        }
        .friend-links-section {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 32px 0;
        }
        .friend-links-section h3 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
        }
        friend-link a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            transition: color 0.2s;
            position: relative;
        }
        friend-link a::before {
            content: '🔗 ';
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .site-footer {
            background: #0f1a26;
            color: rgba(255, 255, 255, 0.6);
            padding: 28px 0;
            font-size: 0.85rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.65);
        }
        .site-footer a:hover {
            color: var(--accent);
        }
        .site-footer .copyright {
            opacity: 0.7;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
            }
            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--primary-dark);
                flex-direction: column;
                padding: 70px 28px 30px;
                gap: 6px;
                transition: right 0.35s ease;
                box-shadow: -8px 0 30px rgba(0, 0, 0, 0.4);
                z-index: 1100;
                align-items: flex-start;
                overflow-y: auto;
            }
            .main-nav.open {
                right: 0;
            }
            .main-nav a {
                font-size: 1.05rem;
                padding: 10px 0;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .main-nav a::after {
                display: none;
            }
            .hamburger {
                display: block;
                z-index: 1200;
            }
            .nav-overlay {
                display: block;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.5);
                z-index: 1050;
                opacity: 0;
                pointer-events: none;
                transition: opacity 0.35s;
            }
            .nav-overlay.open {
                opacity: 1;
                pointer-events: auto;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .article-body {
                padding: 24px 18px;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
                border-radius: 12px;
                border: none;
                gap: 8px;
                background: transparent;
            }
            .search-form input {
                border-radius: 50px;
                border: 2px solid var(--border);
                background: #fff;
            }
            .search-form button {
                border-radius: 50px;
                justify-content: center;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo small {
                font-size: 0.5rem;
            }
            .site-footer .container {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero .meta {
                font-size: 0.8rem;
                gap: 10px;
            }
            .article-body {
                padding: 16px 12px;
            }
            .comment-form,
            .rating-form {
                padding: 16px 14px;
            }
        }