* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #f97316;
            --primary-dark: #ea580c;
            --secondary: #1e293b;
            --accent: #0ea5e9;
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
            --success: #10b981;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f1f5f9;
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 60px 0;
        }
        .site-header {
            background-color: var(--secondary);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo span {
            color: var(--primary);
        }
        .my-logo:hover {
            color: var(--light);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: #cbd5e1;
            font-weight: 500;
        }
        .nav-desktop a:hover {
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--secondary);
            padding: 20px;
            flex-direction: column;
            gap: 20px;
            display: none;
            box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: #cbd5e1;
            padding: 10px 0;
            border-bottom: 1px solid #334155;
        }
        .breadcrumb {
            background-color: #e2e8f0;
            padding: 12px 20px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--dark);
        }
        .main-content {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 40px;
            margin-top: 30px;
            margin-bottom: 30px;
        }
        @media (max-width: 768px) {
            .main-content {
                padding: 25px;
            }
        }
        h1 {
            font-size: 2.8rem;
            color: var(--secondary);
            margin-bottom: 25px;
            line-height: 1.2;
            border-left: 6px solid var(--primary);
            padding-left: 20px;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
        }
        h2 {
            font-size: 2rem;
            color: var(--secondary);
            margin-top: 50px;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--primary-dark);
            margin-top: 30px;
            margin-bottom: 15px;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-top: 25px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--gray);
            font-weight: 500;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fff7ed;
            border-left: 4px solid var(--primary);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .keyword {
            background-color: #fef3c7;
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
            color: #92400e;
        }
        .feature-box {
            background-color: #f8fafc;
            border: 1px solid #e2e8f0;
            border-radius: var(--border-radius);
            padding: 30px;
            margin: 40px 0;
            text-align: center;
        }
        .feature-box h3 {
            margin-top: 0;
        }
        .feature-form {
            display: flex;
            max-width: 500px;
            margin: 20px auto;
        }
        .feature-form input, .feature-form select, .feature-form textarea {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #cbd5e1;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
        }
        .feature-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            padding: 0 25px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .feature-form button:hover {
            background-color: var(--primary-dark);
        }
        textarea {
            width: 100%;
            min-height: 120px;
            resize: vertical;
            border-radius: var(--border-radius);
            padding: 15px;
            margin-bottom: 15px;
            border: 1px solid #cbd5e1;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 15px 0;
            font-size: 1.8rem;
            color: #cbd5e1;
        }
        .star-rating .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #fbbf24;
        }
        .internal-links {
            background-color: #f0f9ff;
            padding: 25px;
            border-radius: var(--border-radius);
            margin: 30px 0;
        }
        .internal-links h3 {
            margin-top: 0;
            color: var(--accent);
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 12px;
            list-style: none;
        }
        .internal-links li {
            padding: 8px 0;
            border-bottom: 1px dashed #bae6fd;
        }
        .internal-links a {
            color: var(--secondary);
            display: flex;
            align-items: center;
        }
        .internal-links a:hover {
            color: var(--primary);
            transform: translateX(5px);
        }
        .internal-links i {
            margin-right: 10px;
            color: var(--accent);
        }
        .article-img {
            margin: 30px auto;
            max-width: 800px;
            box-shadow: var(--shadow);
        }
        .article-img figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .site-footer {
            background-color: var(--secondary);
            color: #cbd5e1;
            padding: 50px 0 20px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 15px;
        }
        .footer-logo span {
            color: var(--primary);
        }
        .footer-heading {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #334155;
        }
        friend-link {
            display: block;
            padding: 8px 0;
            border-bottom: 1px solid #334155;
        }
        friend-link a {
            color: #94a3b8;
        }
        friend-link a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        .update-time {
            color: var(--gray);
            font-size: 0.9rem;
            text-align: right;
            margin-top: 30px;
            padding-top: 15px;
            border-top: 1px dashed #e2e8f0;
        }
        .update-time i {
            margin-right: 5px;
        }