* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3 { color: #2c3e50; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); text-align: center; border-bottom: 4px solid #e74c3c; padding-bottom: 1rem; margin-top: 1.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); color: #3498db; padding-top: 1rem; border-top: 2px dashed #bdc3c7; margin-top: 2rem; }
        h3 { font-size: clamp(1.4rem, 3vw, 1.8rem); color: #16a085; }
        p { margin-bottom: 1.5rem; text-align: justify; hyphens: auto; }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e74c3c; }
        strong { color: #2c3e50; font-weight: 700; }
        em { font-style: italic; color: #7f8c8d; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(90deg, #2c3e50, #4a6491);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(90deg, #e74c3c, #f39c12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .logo a:hover { opacity: 0.9; }
        .nav-desktop {
            display: flex;
            gap: 1.5rem;
        }
        @media (max-width: 768px) { .nav-desktop { display: none; } }
        .nav-desktop a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-desktop a:hover { background: rgba(255,255,255,0.1); }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        @media (max-width: 768px) { .hamburger { display: block; } }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #2c3e50;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: #ecf0f1;
            padding: 0.8rem;
            border-bottom: 1px solid #34495e;
        }
        .nav-mobile a:last-child { border-bottom: none; }
        .breadcrumb {
            background: #ecf0f1;
            padding: 0.8rem 20px;
            margin-top: 5px;
            border-radius: 4px;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #7f8c8d; }
        .breadcrumb a:hover { color: #e74c3c; }
        .breadcrumb i { margin: 0 8px; color: #95a5a6; }
        .main-article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .article-image {
            width: 100%;
            border-radius: 10px;
            overflow: hidden;
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .article-image img { width: 100%; transition: transform 0.5s; }
        .article-image:hover img { transform: scale(1.03); }
        .highlight-box {
            background: linear-gradient(120deg, #ffeaa7, #fab1a0);
            border-left: 6px solid #e74c3c;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip { background: #d1ecf1; border-left-color: #17a2b8; }
        .warning { background: #f8d7da; border-left-color: #dc3545; }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.06);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget { margin-bottom: 2rem; }
        .widget-title {
            font-size: 1.3rem;
            color: #2c3e50;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #3498db;
            margin-bottom: 1rem;
        }
        .search-form {
            display: flex;
            margin-bottom: 1.5rem;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem;
            border: 2px solid #bdc3c7;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-button {
            background: #3498db;
            color: white;
            border: none;
            padding: 0.8rem 1.2rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-button:hover { background: #2980b9; }
        .rating-widget { text-align: center; }
        .stars { font-size: 1.8rem; color: #f1c40f; margin: 0.5rem 0; }
        .star { cursor: pointer; transition: transform 0.2s; }
        .star:hover { transform: scale(1.2); }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #bdc3c7;
            border-radius: 4px;
            font-family: inherit;
            resize: vertical;
            min-height: 120px;
            margin-bottom: 0.8rem;
        }
        .submit-btn {
            background: #2ecc71;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            width: 100%;
            transition: background 0.3s;
        }
        .submit-btn:hover { background: #27ae60; }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo { font-size: 1.8rem; font-weight: bold; color: #fff; margin-bottom: 1rem; }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .friend-links a {
            background: #4a6491;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            font-size: 0.9rem;
            transition: background 0.3s;
        }
        .friend-links a:hover { background: #e74c3c; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 768px) {
            .main-article, .sidebar { padding: 1.5rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .content-wrapper { gap: 25px; }
        }
        .float-left { float: left; margin: 0 1.5rem 1rem 0; max-width: 50%; border-radius: 8px; }
        @media (max-width: 576px) { .float-left { float: none; margin: 1rem auto; max-width: 100%; } }
        .clearfix::after { content: ""; display: table; clear: both; }