* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f1419;
            color: #e0e0e0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff6b6b;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight {
            background: linear-gradient(90deg, #ff6b6b30, #4dabf730);
            padding: 2px 8px;
            border-radius: 4px;
        }
        .section-padding {
            padding: 60px 0;
        }
        .site-header {
            background: linear-gradient(135deg, #1a1f2e 0%, #0f1419 100%);
            border-bottom: 2px solid #ff6b6b;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ff6b6b, #4dabf7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: #b0b7c3;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 1.05rem;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: #ff6b6b20;
            color: #ff6b6b;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #4dabf7;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #161b22;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #b0b7c3; }
        .breadcrumb a:hover { color: #4dabf7; }
        .breadcrumb span { color: #ff6b6b; }
        .main-article {
            background-color: #161b22;
            border-radius: 12px;
            padding: 40px;
            margin: 30px 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }
        h1 {
            font-size: 2.8rem;
            color: #fff;
            margin-bottom: 25px;
            line-height: 1.2;
            border-left: 6px solid #ff6b6b;
            padding-left: 20px;
        }
        h2 {
            font-size: 2rem;
            color: #4dabf7;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #333;
        }
        h3 {
            font-size: 1.6rem;
            color: #ffb86c;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #b0b7c3;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 22px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid #333;
            font-size: 0.95rem;
            color: #888;
        }
        .update-time {
            color: #ff6b6b;
            font-weight: bold;
        }
        .featured-img {
            width: 100%;
            border-radius: 12px;
            margin: 30px 0;
            border: 3px solid #4dabf7;
            transition: transform 0.5s ease;
        }
        .featured-img:hover {
            transform: scale(1.01);
        }
        .tip-box, .data-box {
            background: #1a1f2e;
            border-left: 5px solid #ffb86c;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .data-box {
            border-left-color: #4dabf7;
        }
        ul, ol {
            padding-left: 30px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
        }
        .interactive-section {
            background: #1a1f2e;
            padding: 30px;
            border-radius: 12px;
            margin: 50px 0;
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #ffb86c;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 15px;
            background-color: #0f1419;
            border: 1px solid #333;
            border-radius: 8px;
            color: #fff;
            font-size: 1rem;
        }
        .form-control:focus {
            outline: none;
            border-color: #4dabf7;
            box-shadow: 0 0 0 3px #4dabf740;
        }
        .btn {
            background: linear-gradient(90deg, #ff6b6b, #ff8e6b);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1.1rem;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 107, 107, 0.4);
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #444;
            margin: 15px 0;
        }
        .star-rating .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #ffb86c;
        }
        .sidebar {
            background: #1a1f2e;
            border-radius: 12px;
            padding: 25px;
            margin-top: 30px;
        }
        .sidebar h3 {
            color: #ff6b6b;
            margin-top: 0;
        }
        .related-links a {
            display: block;
            padding: 12px 15px;
            margin-bottom: 10px;
            background-color: #0f1419;
            border-radius: 8px;
            border-left: 4px solid #4dabf7;
            transition: all 0.3s;
        }
        .related-links a:hover {
            background-color: #252a3a;
            border-left-color: #ff6b6b;
            transform: translateX(5px);
        }
        .site-footer {
            background: #0a0d12;
            padding: 50px 0 20px;
            margin-top: 60px;
            border-top: 2px solid #333;
        }
        .friend-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }
        friend-link {
            display: block;
            background: #161b22;
            padding: 18px;
            border-radius: 8px;
            text-align: center;
            font-weight: 600;
            transition: all 0.3s;
            border: 1px solid transparent;
        }
        friend-link:hover {
            border-color: #ff6b6b;
            background-color: #1a1f2e;
            transform: translateY(-5px);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #333;
            color: #888;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .main-nav ul { gap: 15px; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #1a1f2e;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.5);
                border-top: 2px solid #333;
            }
            .main-nav.active ul {
                display: flex;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .main-article {
                padding: 25px;
            }
            .interactive-section {
                padding: 20px;
            }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .friend-links {
                grid-template-columns: 1fr;
            }
        }