* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0a0e17;
            color: #e0e0e0;
            line-height: 1.7;
            background-image: radial-gradient(circle at 15% 50%, rgba(20, 40, 80, 0.2) 0%, transparent 20%);
            max-width: 100%;
            overflow-x: hidden;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #74c0fc;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .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, transparent 0%, rgba(77, 171, 247, 0.15) 50%, transparent 100%);
            padding: 2px 8px;
            border-left: 3px solid #4dabf7;
        }
        .py-1 { padding-top: 1rem; padding-bottom: 1rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .py-3 { padding-top: 3rem; padding-bottom: 3rem; }
        .my-1 { margin-top: 1rem; margin-bottom: 1rem; }
        .my-2 { margin-top: 2rem; margin-bottom: 2rem; }
        .my-3 { margin-top: 3rem; margin-bottom: 3rem; }
        .site-header {
            background: rgba(10, 14, 23, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #1e2a3a;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #4dabf7, #da77f2);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
        }
        .logo a:hover {
            filter: brightness(1.2);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #b0bec5;
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #4dabf7;
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #e0e0e0;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            position: fixed;
            top: 70px;
            right: -100%;
            width: 280px;
            height: calc(100vh - 70px);
            background: rgba(20, 28, 44, 0.98);
            backdrop-filter: blur(15px);
            flex-direction: column;
            padding: 30px 20px;
            transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 999;
            border-left: 1px solid #2d3748;
            overflow-y: auto;
        }
        .nav-mobile.active {
            right: 0;
        }
        .nav-mobile a {
            display: block;
            padding: 15px;
            color: #cbd5e0;
            border-bottom: 1px solid #2d3748;
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .nav-mobile a:hover {
            background: rgba(77, 171, 247, 0.1);
            border-radius: 6px;
            color: #4dabf7;
        }
        .breadcrumb {
            background: rgba(30, 42, 58, 0.6);
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: #90caf9;
        }
        .breadcrumb span {
            color: #b0bec5;
            margin: 0 8px;
        }
        .search-section {
            background: linear-gradient(135deg, #111b2d, #0a0e17);
            padding: 25px;
            border-radius: 12px;
            border: 1px solid #2d3748;
            margin: 30px 0;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 15px auto 0;
        }
        .search-input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid #3b82f6;
            border-right: none;
            border-radius: 8px 0 0 8px;
            background: #1a202c;
            color: #fff;
            font-size: 1rem;
        }
        .search-button {
            background: linear-gradient(to right, #3b82f6, #1d4ed8);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-button:hover {
            background: linear-gradient(to right, #2563eb, #1e40af);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-content {
            background: rgba(20, 28, 44, 0.7);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid #2d3748;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        .sidebar {
            background: rgba(20, 28, 44, 0.7);
            border-radius: 16px;
            padding: 25px;
            border: 1px solid #2d3748;
            align-self: start;
            position: sticky;
            top: 100px;
        }
        @media (max-width: 992px) {
            .sidebar { position: static; }
        }
        h1 {
            font-size: 3.2rem;
            color: #fff;
            margin-bottom: 25px;
            line-height: 1.2;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
            background: linear-gradient(90deg, #fff 30%, #4dabf7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.5rem; }
        }
        h2 {
            font-size: 2.2rem;
            color: #90caf9;
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid #2d3748;
        }
        h3 {
            font-size: 1.7rem;
            color: #a5d6a7;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #ffcc80;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #bbdefb;
            line-height: 1.8;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        .featured-image {
            margin: 35px auto;
            text-align: center;
        }
        .featured-image img {
            max-width: 800px;
            width: 100%;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            transition: transform 0.5s ease;
        }
        .featured-image img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            margin-top: 10px;
            font-style: italic;
            color: #9ca3af;
            font-size: 0.95rem;
        }
        .info-box {
            background: rgba(30, 64, 175, 0.15);
            border-left: 5px solid #3b82f6;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box {
            background: rgba(34, 197, 94, 0.1);
            border-left: 5px solid #22c55e;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .interactive-section {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid #2d3748;
        }
        .form-group {
            margin-bottom: 25px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #cbd5e0;
        }
        input, textarea, select {
            width: 100%;
            padding: 15px;
            background: #1a202c;
            border: 1px solid #4a5568;
            border-radius: 8px;
            color: #fff;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4dabf7;
            box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.2);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #4a5568;
            cursor: pointer;
            margin-bottom: 15px;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #fbbf24;
        }
        .submit-btn {
            background: linear-gradient(135deg, #10b981, #059669);
            color: white;
            border: none;
            padding: 15px 35px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform 0.2s, background 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(135deg, #059669, #047857);
            transform: translateY(-2px);
        }
        .widget {
            margin-bottom: 35px;
        }
        .widget-title {
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #3b82f6;
        }
        .related-links a {
            display: block;
            padding: 12px 15px;
            margin-bottom: 10px;
            background: rgba(45, 55, 72, 0.5);
            border-radius: 8px;
            color: #cbd5e0;
            transition: all 0.3s;
        }
        .related-links a:hover {
            background: rgba(59, 130, 246, 0.2);
            color: #4dabf7;
            padding-left: 20px;
        }
        .update-time {
            background: rgba(251, 191, 36, 0.1);
            padding: 15px;
            border-radius: 8px;
            border-left: 4px solid #fbbf24;
            font-size: 0.95rem;
        }
        .site-footer {
            background: rgba(10, 14, 23, 0.98);
            border-top: 1px solid #1e2a3a;
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        .footer-widget h3 {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 25px;
        }
        friend-link {
            display: block;
            margin-bottom: 15px;
        }
        friend-link a {
            color: #90caf9;
        }
        .copyright {
            text-align: center;
            margin-top: 50px;
            padding-top: 25px;
            border-top: 1px solid #2d3748;
            color: #9ca3af;
            font-size: 0.9rem;
        }