* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #f7d51e;
            --primary-dark: #e6c419;
            --secondary: #1e2a4a;
            --accent: #ff6b35;
            --bg: #f5f7fa;
            --card-bg: #ffffff;
            --text: #1a1a2e;
            --text-light: #4a4a6a;
            --border: #e0e3ed;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --radius: 16px;
            --radius-sm: 8px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-bg: linear-gradient(135deg, #1e2a4a 0%, #2a3f6a 100%);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--header-bg);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            gap: 20px;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 900;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            transition: transform 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo:hover {
            transform: scale(1.02);
            color: var(--primary);
        }
        .my-logo i {
            font-size: 32px;
        }
        .my-logo span {
            font-size: 14px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0;
            text-transform: none;
            margin-left: 4px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        nav a {
            color: rgba(255, 255, 255, 0.85);
            font-weight: 600;
            font-size: 15px;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
        }
        nav a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .hamburger {
            display: none;
            font-size: 28px;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 4px 8px;
            transition: color 0.2s;
        }
        .hamburger:hover {
            color: var(--primary);
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-light);
        }
        .breadcrumb-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: #aaa;
            margin: 0 4px;
        }
        .breadcrumb .current {
            color: var(--text-light);
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #1e2a4a 0%, #2a3f6a 50%, #1a2a4a 100%);
            color: #fff;
            padding: 60px 0 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--bg);
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 16px;
            text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .hero p {
            font-size: 20px;
            max-width: 750px;
            margin: 0 auto 24px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
        }
        .hero .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 6px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .hero .badge i {
            margin-right: 6px;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .content-area {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 40px 44px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 18px;
            color: var(--secondary);
            margin-bottom: 14px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-weight: 500;
            font-size: 14px;
        }
        .sidebar-card ul li a:hover {
            color: var(--accent);
        }
        .content-area h2 {
            font-size: 32px;
            color: var(--secondary);
            margin: 40px 0 16px;
            border-left: 5px solid var(--primary);
            padding-left: 16px;
        }
        .content-area h2:first-child {
            margin-top: 0;
        }
        .content-area h3 {
            font-size: 24px;
            color: var(--secondary);
            margin: 32px 0 12px;
        }
        .content-area h4 {
            font-size: 19px;
            color: var(--text);
            margin: 24px 0 8px;
            font-weight: 700;
        }
        .content-area p {
            margin-bottom: 18px;
            color: var(--text);
            font-size: 16.5px;
        }
        .content-area ul,
        .content-area ol {
            margin: 0 0 20px 24px;
            color: var(--text);
        }
        .content-area li {
            margin-bottom: 8px;
            font-size: 16px;
        }
        .content-area .highlight-box {
            background: #f0f4ff;
            border-left: 4px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
        }
        .content-area .highlight-box strong {
            color: var(--secondary);
        }
        .content-area .emoji-big {
            font-size: 28px;
            margin-right: 8px;
        }
        .featured-image {
            margin: 30px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image img {
            width: 100%;
            height: auto;
        }
        .featured-image figcaption {
            background: #f0f2f6;
            padding: 10px 16px;
            font-size: 14px;
            color: var(--text-light);
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 10px;
            margin: 24px 0 16px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 16px;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            padding: 12px 28px;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 16px;
        }
        .search-form button:hover {
            background: var(--accent);
        }
        .interaction-area {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 2px solid var(--border);
        }
        .comment-form,
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin: 16px 0 28px;
            padding: 24px;
            background: #f8f9fc;
            border-radius: var(--radius-sm);
        }
        .comment-form textarea,
        .comment-form input,
        .rating-form select,
        .rating-form input {
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 15px;
            outline: none;
            font-family: var(--font);
            transition: border 0.2s;
        }
        .comment-form textarea:focus,
        .comment-form input:focus,
        .rating-form select:focus {
            border-color: var(--primary);
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-form button,
        .rating-form button {
            padding: 12px 24px;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 16px;
            align-self: flex-start;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: var(--accent);
        }
        .rating-form select {
            max-width: 200px;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 12px;
            margin: 20px 0;
        }
        .related-links a {
            display: block;
            padding: 12px 16px;
            background: #f0f4ff;
            border-radius: var(--radius-sm);
            font-weight: 500;
            transition: all 0.2s;
            border: 1px solid transparent;
        }
        .related-links a:hover {
            background: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            padding: 40px 0 24px;
            margin-top: 20px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-inner h4 {
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 14px;
        }
        .footer-inner p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-inner a {
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-inner a:hover {
            color: var(--primary);
        }
        .footer-inner ul {
            list-style: none;
        }
        .footer-inner ul li {
            padding: 4px 0;
        }
        .footer-inner ul li a {
            font-size: 14px;
        }
        friend-link {
            display: block;
            margin-top: 12px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 16px;
            margin-bottom: 6px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            background: rgba(255, 255, 255, 0.08);
            padding: 4px 14px;
            border-radius: 50px;
            transition: all 0.2s;
        }
        friend-link a:hover {
            background: var(--primary);
            color: var(--secondary);
        }
        .copyright {
            text-align: center;
            padding-top: 28px;
            margin-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .copyright strong {
            color: rgba(255, 255, 255, 0.8);
        }
        .last-updated {
            display: inline-block;
            background: #eef1f7;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .last-updated i {
            margin-right: 6px;
            color: var(--accent);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--secondary);
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            z-index: 99;
            opacity: 0;
            pointer-events: none;
        }
        .back-to-top.show {
            opacity: 1;
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--accent);
            transform: translateY(-4px);
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: 2;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero p {
                font-size: 18px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 12px;
                padding: 16px 0 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 8px;
            }
            nav.show {
                display: flex;
            }
            nav a {
                font-size: 16px;
                padding: 8px 0;
            }
            .hamburger {
                display: block;
            }
            .content-area {
                padding: 24px 18px;
            }
            .content-area h2 {
                font-size: 26px;
            }
            .content-area h3 {
                font-size: 20px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero p {
                font-size: 16px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .related-links {
                grid-template-columns: 1fr;
            }
            .my-logo {
                font-size: 22px;
            }
            .my-logo span {
                font-size: 12px;
            }
            .back-to-top {
                bottom: 16px;
                right: 16px;
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 40px 0 36px;
            }
            .hero h1 {
                font-size: 22px;
            }
            .content-area h2 {
                font-size: 22px;
            }
            .content-area {
                padding: 18px 14px;
            }
            .breadcrumb-inner {
                font-size: 12px;
            }
            .sidebar-card {
                padding: 16px;
            }
        }
        @media print {
            header,
            .breadcrumb,
            .sidebar,
            .back-to-top,
            .search-form,
            .interaction-area,
            footer {
                display: none !important;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-area {
                box-shadow: none;
                padding: 0;
            }
            .hero {
                padding: 20px 0;
                background: #fff;
                color: #000;
            }
            .hero h1 {
                color: #000;
            }
            .hero::after {
                display: none;
            }
        }