* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a237e;
            --secondary: #f9a825;
            --accent: #e53935;
            --bg: #f5f5f5;
            --text: #212121;
            --light: #ffffff;
            --gray: #757575;
            --border: #e0e0e0;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        .site-header {
            background: var(--primary);
            color: var(--light);
            padding: 0 20px;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--secondary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity 0.3s;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .my-logo i {
            font-size: 1.8rem;
            color: var(--accent);
        }
        .my-logo span {
            color: var(--light);
            font-weight: 300;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.3s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-menu li a {
            color: var(--light);
            text-decoration: none;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.3s, color 0.3s;
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: var(--secondary);
            color: var(--primary);
        }
        .nav-menu li a i {
            margin-right: 6px;
        }
        .breadcrumb {
            max-width: 1280px;
            margin: 0 auto;
            padding: 12px 20px 0;
            font-size: 0.85rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 6px;
            color: #bbb;
        }
        .breadcrumb .current {
            color: var(--gray);
            font-weight: 400;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 20px 20px 40px;
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
        }
        .main-content {
            background: var(--light);
            border-radius: var(--radius);
            padding: 32px 36px;
            box-shadow: var(--shadow);
        }
        .main-content h1 {
            font-size: 2.4rem;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 12px;
            border-bottom: 4px solid var(--secondary);
            padding-bottom: 12px;
        }
        .main-content h1 i {
            color: var(--secondary);
            margin-right: 12px;
        }
        .main-content h2 {
            font-size: 1.7rem;
            color: var(--primary);
            margin-top: 40px;
            margin-bottom: 16px;
            padding-left: 12px;
            border-left: 5px solid var(--secondary);
        }
        .main-content h3 {
            font-size: 1.3rem;
            color: #283593;
            margin-top: 28px;
            margin-bottom: 10px;
        }
        .main-content h4 {
            font-size: 1.1rem;
            color: #3949ab;
            margin-top: 20px;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .main-content p {
            margin-bottom: 16px;
            font-size: 1rem;
            color: #333;
        }
        .main-content p strong {
            color: var(--primary);
        }
        .main-content ul,
        .main-content ol {
            margin: 12px 0 20px 24px;
        }
        .main-content li {
            margin-bottom: 8px;
        }
        .main-content a {
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted transparent;
            transition: border-color 0.3s;
        }
        .main-content a:hover {
            border-bottom-color: var(--accent);
        }
        .main-content .feature-box {
            background: #f0f4ff;
            border-radius: 10px;
            padding: 20px 24px;
            margin: 20px 0;
            border-left: 5px solid var(--secondary);
        }
        .main-content .feature-box i {
            color: var(--secondary);
            margin-right: 8px;
        }
        .main-content .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .main-content .stat-card {
            background: var(--primary);
            color: var(--light);
            padding: 20px 16px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 4px 12px rgba(26, 35, 126, 0.2);
        }
        .main-content .stat-card .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
        }
        .main-content .stat-card .label {
            font-size: 0.85rem;
            opacity: 0.9;
            margin-top: 4px;
        }
        .main-content .quote-box {
            background: #fff8e1;
            border-radius: 10px;
            padding: 20px 24px;
            margin: 20px 0;
            font-style: italic;
            border-left: 5px solid var(--secondary);
            position: relative;
        }
        .main-content .quote-box::before {
            content: '\f10d';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: 12px;
            left: 12px;
            font-size: 1.2rem;
            color: var(--secondary);
            opacity: 0.4;
        }
        .main-content .quote-box .author {
            display: block;
            margin-top: 12px;
            font-weight: 700;
            color: var(--primary);
            font-style: normal;
        }
        .main-content img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 20px 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }
        .main-content .img-caption {
            font-size: 0.85rem;
            color: var(--gray);
            text-align: center;
            margin-top: -12px;
            margin-bottom: 20px;
        }
        .update-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #e8f5e9;
            color: #2e7d32;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .update-badge i {
            color: #2e7d32;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar .card {
            background: var(--light);
            border-radius: var(--radius);
            padding: 24px 20px;
            box-shadow: var(--shadow);
        }
        .sidebar .card h3 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-bottom: 12px;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 8px;
        }
        .sidebar .card ul {
            list-style: none;
        }
        .sidebar .card ul li {
            margin-bottom: 10px;
        }
        .sidebar .card ul li a {
            color: var(--text);
            text-decoration: none;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 8px;
            border-radius: 6px;
            transition: background 0.3s, color 0.3s;
        }
        .sidebar .card ul li a:hover {
            background: #e8eaf6;
            color: var(--primary);
        }
        .sidebar .card ul li a i {
            color: var(--secondary);
            width: 18px;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.9rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-form input:focus {
            border-color: var(--secondary);
        }
        .search-form button {
            background: var(--primary);
            color: var(--light);
            border: none;
            padding: 10px 18px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #283593;
        }
        .comment-area,
        .rating-area {
            margin-top: 20px;
        }
        .comment-area textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font);
            resize: vertical;
            min-height: 100px;
            outline: none;
            transition: border-color 0.3s;
        }
        .comment-area textarea:focus {
            border-color: var(--secondary);
        }
        .comment-area .form-row {
            display: flex;
            gap: 12px;
            margin-top: 10px;
            flex-wrap: wrap;
        }
        .comment-area .form-row input {
            flex: 1;
            min-width: 180px;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.9rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .comment-area .form-row input:focus {
            border-color: var(--secondary);
        }
        .comment-area .form-row button {
            background: var(--secondary);
            color: var(--primary);
            border: none;
            padding: 10px 24px;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        .comment-area .form-row button:hover {
            background: #fbc02d;
            transform: scale(1.02);
        }
        .rating-area .stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ffb300;
            cursor: pointer;
            margin: 8px 0 12px;
            transition: transform 0.2s;
        }
        .rating-area .stars i {
            transition: color 0.3s, transform 0.2s;
        }
        .rating-area .stars i:hover {
            transform: scale(1.2);
        }
        .rating-area .stars i.active {
            color: #ff8f00;
        }
        .rating-area .rating-btn {
            background: var(--primary);
            color: var(--light);
            border: none;
            padding: 10px 28px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .rating-area .rating-btn:hover {
            background: #283593;
        }
        .rating-display {
            margin-top: 12px;
            font-size: 1rem;
            color: var(--gray);
        }
        .rating-display .avg {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            background: var(--light);
            border-radius: var(--radius);
            padding: 24px 28px;
            margin-top: 32px;
            box-shadow: var(--shadow);
        }
        friend-link h3 {
            font-size: 1.2rem;
            color: var(--primary);
            margin-bottom: 14px;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 8px;
        }
        friend-link .links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
        }
        friend-link .links a {
            color: var(--text);
            text-decoration: none;
            font-size: 0.9rem;
            padding: 4px 0;
            border-bottom: 1px solid transparent;
            transition: border-color 0.3s, color 0.3s;
        }
        friend-link .links a:hover {
            border-bottom-color: var(--secondary);
            color: var(--primary);
        }
        .site-footer {
            background: var(--primary);
            color: var(--light);
            padding: 24px 20px;
            text-align: center;
            margin-top: 40px;
        }
        .site-footer .footer-inner {
            max-width: 1280px;
            margin: 0 auto;
        }
        .site-footer p {
            font-size: 0.85rem;
            opacity: 0.85;
            margin-bottom: 4px;
        }
        .site-footer a {
            color: var(--secondary);
            text-decoration: none;
        }
        .site-footer a:hover {
            text-decoration: underline;
        }
        .site-footer .copyright {
            margin-top: 8px;
            font-size: 0.8rem;
            opacity: 0.7;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 12px;
        }
        @media (max-width: 900px) {
            .container {
                grid-template-columns: 1fr;
                padding: 16px;
            }
            .main-content {
                padding: 20px 18px;
            }
            .main-content h1 {
                font-size: 1.8rem;
            }
            .main-content h2 {
                font-size: 1.4rem;
            }
            .sidebar {
                order: 2;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                background: var(--primary);
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                padding: 16px 20px;
                gap: 4px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
                border-radius: 0 0 12px 12px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 12px 16px;
                width: 100%;
            }
            .header-inner {
                height: 56px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .breadcrumb {
                padding: 8px 16px 0;
                font-size: 0.75rem;
            }
            .main-content .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .main-content {
                padding: 16px 14px;
            }
            .main-content h1 {
                font-size: 1.5rem;
            }
            .main-content h2 {
                font-size: 1.2rem;
            }
            .main-content h3 {
                font-size: 1.1rem;
            }
            .comment-area .form-row {
                flex-direction: column;
            }
            .comment-area .form-row input {
                min-width: auto;
            }
            .rating-area .stars {
                font-size: 1.5rem;
            }
            friend-link .links {
                flex-direction: column;
                gap: 6px;
            }
        }