* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0a0f1a 0%, #1a2332 100%);
            background-attachment: fixed;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: rgba(10, 15, 26, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #2a3b5c;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: bold;
            background: linear-gradient(90deg, #ff9900, #ffcc00);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            letter-spacing: 1px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        }
        .my-logo a:hover { opacity: 0.9; }
        .nav-primary {
            display: flex;
            align-items: center;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-menu a {
            color: #b0c4de;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-menu a:hover,
        .nav-menu a:focus {
            background: rgba(255, 153, 0, 0.2);
            color: #ffcc00;
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #ffcc00;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1rem 2rem;
            background: rgba(26, 35, 50, 0.8);
            font-size: 0.9rem;
            color: #8aa2c7;
            border-bottom: 1px solid #2a3b5c;
        }
        .breadcrumb a {
            color: #b0c4de;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .container {
            max-width: 1280px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 3rem;
        }
        .content-main { grid-column: 1; }
        .content-sidebar { grid-column: 2; }
        article {
            background: rgba(20, 28, 42, 0.85);
            border-radius: 12px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            border: 1px solid #2a3b5c;
            margin-bottom: 2rem;
        }
        h1, h2, h3, h4 {
            color: #ffcc00;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 3rem;
            border-bottom: 3px solid #ff9900;
            padding-bottom: 1rem;
            text-align: center;
        }
        h2 { font-size: 2.2rem; border-left: 5px solid #ff9900; padding-left: 1rem; }
        h3 { font-size: 1.8rem; color: #ffaa33; }
        h4 { font-size: 1.4rem; color: #e6b450; }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.3rem;
            color: #c9d7f0;
            font-weight: 500;
            background: rgba(42, 59, 92, 0.3);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #ff9900;
        }
        strong { color: #ffcc66; font-weight: 700; }
        em { color: #a3d0ff; font-style: italic; }
        a.content-link {
            color: #00ccff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        a.content-link:hover {
            color: #ff9900;
            text-decoration: none;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
            border: 2px solid #3a506b;
            border-radius: 8px;
            overflow: hidden;
            background: #0a0f1a;
            padding: 0.5rem;
        }
        .img-container img {
            border-radius: 4px;
        }
        .img-caption {
            font-style: italic;
            color: #8aa2c7;
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }
        .interactive-module {
            background: rgba(26, 35, 50, 0.9);
            border: 1px solid #3a506b;
            border-radius: 10px;
            padding: 2rem;
            margin-bottom: 2rem;
        }
        .module-title {
            color: #ffcc00;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .module-title i { font-size: 1.3rem; }
        form { display: flex; flex-direction: column; gap: 1.2rem; }
        input, textarea, select {
            padding: 0.9rem 1.2rem;
            border: 1px solid #3a506b;
            border-radius: 6px;
            background: rgba(10, 15, 26, 0.7);
            color: #e0e0e0;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #ff9900;
            box-shadow: 0 0 0 2px rgba(255, 153, 0, 0.2);
        }
        button {
            background: linear-gradient(90deg, #ff9900, #e68900);
            color: #0a0f1a;
            border: none;
            padding: 1rem 1.8rem;
            border-radius: 6px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s;
            align-self: flex-start;
        }
        button:hover {
            background: linear-gradient(90deg, #ffaa33, #ff9900);
            transform: scale(1.03);
            box-shadow: 0 5px 15px rgba(255, 153, 0, 0.4);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #3a506b;
            cursor: pointer;
            margin: 1rem 0;
        }
        .star-rating .star { transition: color 0.2s; }
        .star-rating .star:hover,
        .star-rating .star.active { color: #ffcc00; }
        .content-sidebar > div {
            background: rgba(20, 28, 42, 0.85);
            border-radius: 10px;
            padding: 1.8rem;
            margin-bottom: 1.8rem;
            border: 1px solid #2a3b5c;
        }
        .sidebar-title {
            color: #ffcc00;
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ff9900;
        }
        .related-links { list-style: none; }
        .related-links li { margin-bottom: 0.9rem; }
        .related-links a {
            color: #b0c4de;
            text-decoration: none;
            display: block;
            padding: 0.7rem;
            border-radius: 5px;
            transition: all 0.3s;
        }
        .related-links a:hover {
            background: rgba(255, 153, 0, 0.15);
            color: #ffcc00;
            padding-left: 1.2rem;
        }
        .update-time {
            font-size: 0.9rem;
            color: #8aa2c7;
            text-align: center;
            padding: 1rem;
            background: rgba(10, 15, 26, 0.6);
            border-radius: 6px;
        }
        footer {
            margin-top: auto;
            background: #0a0f1a;
            border-top: 1px solid #2a3b5c;
            padding: 3rem 2rem 2rem;
        }
        .footer-content {
            max-width: 1280px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            color: #00ccff;
            text-decoration: none;
            padding: 0.5rem 0;
            display: inline-block;
        }
        friend-link a:hover { color: #ff9900; text-decoration: underline; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2a3b5c;
            color: #8aa2c7;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
                padding: 0 1.5rem;
            }
            .content-sidebar { grid-column: 1; order: -1; }
        }
        @media (max-width: 768px) {
            .site-header { padding: 1rem; }
            .hamburger { display: block; }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 15, 26, 0.98);
                padding: 1.5rem;
                border-top: 1px solid #2a3b5c;
                box-shadow: 0 10px 20px rgba(0,0,0,0.5);
            }
            .nav-menu.active { display: flex; }
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.9rem; }
            article { padding: 2rem; }
            .container { margin: 1rem auto; }
        }
        @media (max-width: 480px) {
            .container, .site-header, .breadcrumb { padding-left: 1rem; padding-right: 1rem; }
            article { padding: 1.5rem; }
            h1 { font-size: 2rem; }
            .lead { font-size: 1.1rem; }
        }