* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-dark: #1a365d;
            --primary-color: #2c5282;
            --accent-color: #38b2ac;
            --accent-glow: rgba(56, 178, 172, 0.3);
            --text-dark: #2d3748;
            --text-light: #f7fafc;
            --bg-light: #f8f9fa;
            --bg-section: #edf2f7;
            --border-color: #cbd5e0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: var(--text-dark);
            background-color: var(--bg-light);
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .py-lg { padding-block: 4rem; }
        .py-md { padding-block: 2.5rem; }
        .py-sm { padding-block: 1.5rem; }
        h1, h2, h3, h4, h5, h6 {
            color: var(--primary-dark);
            line-height: 1.3;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        h1 { font-size: clamp(2.5rem, 5vw, 3.8rem); }
        h2 { font-size: clamp(2rem, 4vw, 2.8rem); border-bottom: 3px solid var(--accent-color); padding-bottom: 0.5rem; margin-top: 2.5rem; }
        h3 { font-size: clamp(1.5rem, 3.5vw, 2rem); color: var(--primary-color); margin-top: 2rem; }
        h4 { font-size: 1.4rem; color: var(--accent-color); margin-top: 1.8rem; }
        p { margin-bottom: 1.2rem; font-size: 1.1rem; }
        a { color: var(--primary-color); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-color); }
        strong { color: var(--primary-dark); font-weight: 700; }
        em { font-style: italic; color: #555; }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
            color: var(--text-light);
            padding-block: 1rem;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .breadcrumb {
            background-color: var(--bg-section);
            padding: 0.8rem 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a { color: var(--primary-color); }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb span { color: #666; }
        .main-nav ul {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent-color);
            transition: var(--transition);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .hero {
            background: linear-gradient(rgba(26, 54, 93, 0.9), rgba(44, 82, 130, 0.9)), url('https://images.unsplash.com/photo-1606167668584-78701c57f13d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            text-align: center;
            padding-block: 5rem 4rem;
        }
        .hero h1 {
            color: white;
            margin-bottom: 1.5rem;
        }
        .hero p {
            font-size: 1.4rem;
            max-width: 800px;
            margin: 0 auto 2.5rem;
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto;
            background: white;
            border-radius: 50px;
            padding: 5px;
            box-shadow: var(--shadow);
            display: flex;
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
        }
        .search-box button {
            background: var(--accent-color);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 0 50px 50px 0;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #2c9c97;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding-block: 2.5rem;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .main-article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        .article-img {
            width: 100%;
            border-radius: 10px;
            margin: 1.5rem 0;
            box-shadow: var(--shadow);
        }
        .highlight-box {
            background: linear-gradient(135deg, var(--bg-section) 0%, #e2e8f0 100%);
            border-left: 5px solid var(--accent-color);
            padding: 1.8rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .tip {
            background-color: #f0fff4;
            border: 1px solid #9ae6b4;
            padding: 1.2rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .tip i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .interactive-section {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            margin-top: 2rem;
            box-shadow: var(--shadow);
        }
        .interactive-section h3 {
            margin-top: 0;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars .active {
            color: #fbbf24;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.8rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px var(--accent-glow);
        }
        .btn-submit {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 1rem 1.8rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .btn-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            border-bottom: 2px solid var(--accent-color);
            padding-bottom: 0.5rem;
            margin-bottom: 1.2rem;
            font-size: 1.5rem;
        }
        .link-list {
            list-style: none;
        }
        .link-list li {
            padding: 0.8rem 0;
            border-bottom: 1px dashed var(--border-color);
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .link-list i {
            color: var(--accent-color);
        }
        .update-time {
            background: var(--primary-dark);
            color: white;
            padding: 1rem;
            border-radius: 8px;
            text-align: center;
            font-weight: 600;
        }
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-light);
            padding-block: 3rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--accent-color);
            border-bottom: 2px solid var(--accent-color);
            padding-bottom: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            padding: 1.5rem;
            margin-top: 2rem;
            border-left: 4px solid var(--accent-color);
        }
        friend-link h4 {
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #a0aec0;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--primary-dark);
                flex-direction: column;
                padding: 2rem;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: var(--transition);
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
            .hero {
                padding-block: 3rem;
            }
            .hero p {
                font-size: 1.2rem;
            }
            .content-wrapper {
                padding-block: 1.5rem;
            }
            .main-article,
            .sidebar-widget {
                padding: 1.5rem;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
        }