* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            background-image: linear-gradient(to bottom, #0c1a2d 0%, #1a365d 300px, #f8f9fa 300px);
            background-repeat: no-repeat;
        }
        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(120deg, #a5d8ff 0%, #a5d8ff 100%);
            background-repeat: no-repeat;
            background-size: 100% 30%;
            background-position: 0 88%;
        }
        .spacer { height: 40px; }
        .site-header {
            background-color: rgba(12, 26, 45, 0.95);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color 0.3s;
        }
        .my-logo:hover {
            color: #64b5f6;
        }
        .my-logo i {
            color: #ffcc00;
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #e2e8f0;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 0;
            position: relative;
            transition: color 0.3s;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffcc00;
            transition: width 0.3s;
        }
        .nav-desktop a:hover {
            color: #ffcc00;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #0c1a2d;
            flex-direction: column;
            padding: 20px;
            box-shadow: 0 10px 15px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: #e2e8f0;
            text-decoration: none;
            padding: 15px 0;
            border-bottom: 1px solid #2d3748;
            font-weight: 600;
            transition: padding-left 0.3s;
        }
        .nav-mobile a:hover {
            padding-left: 10px;
            color: #ffcc00;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #edf2f7;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: #4a5568;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #2b6cb0;
            text-decoration: underline;
        }
        main {
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            padding: 40px;
            margin-bottom: 50px;
            position: relative;
        }
        @media (max-width: 768px) {
            main { padding: 25px; }
        }
        h1 {
            font-size: 2.8rem;
            color: #1a365d;
            margin-bottom: 25px;
            line-height: 1.2;
            border-bottom: 4px solid #ffcc00;
            padding-bottom: 15px;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
        }
        h2 {
            font-size: 2rem;
            color: #2d3748;
            margin: 40px 0 20px;
            padding-top: 10px;
        }
        h3 {
            font-size: 1.6rem;
            color: #4a5568;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #718096;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 22px;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #2d3748;
            font-weight: 500;
            margin-bottom: 30px;
        }
        blockquote {
            border-left: 5px solid #4299e1;
            background: #ebf8ff;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
        }
        .info-box {
            background: #f0fff4;
            border-left: 5px solid #38a169;
            padding: 20px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .warning-box {
            background: #fffaf0;
            border-left: 5px solid #ed8936;
            padding: 20px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        article a {
            color: #2b6cb0;
            text-decoration: none;
            border-bottom: 1px dotted #2b6cb0;
            transition: all 0.2s;
        }
        article a:hover {
            color: #1a365d;
            border-bottom: 2px solid #1a365d;
        }
        .article-image {
            width: 80%;
            margin: 35px auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 15px 25px rgba(0, 0, 0, 0.15);
            transition: transform 0.4s;
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .article-image figcaption {
            text-align: center;
            font-style: italic;
            color: #718096;
            padding: 10px;
            background: #f7fafc;
            border-top: 1px solid #e2e8f0;
        }
        .form-section {
            background: #f7fafc;
            padding: 30px;
            border-radius: 10px;
            margin: 50px 0;
            border: 1px solid #e2e8f0;
        }
        .form-title {
            margin-top: 0;
            color: #2d3748;
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-top: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 8px;
            font-weight: 600;
            color: #4a5568;
        }
        input, select, textarea {
            padding: 14px;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: #4299e1;
            box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
        }
        button {
            background: #4299e1;
            color: white;
            border: none;
            padding: 16px 30px;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            align-self: start;
        }
        button:hover {
            background: #3182ce;
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 10px 0;
        }
        .star {
            font-size: 1.8rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffcc00;
        }
        .last-updated {
            text-align: right;
            font-size: 0.95rem;
            color: #718096;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #e2e8f0;
        }
        footer {
            background: #1a365d;
            color: #e2e8f0;
            padding: 50px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 15px;
        }
        .footer-links h4 {
            color: #ffcc00;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #ffcc00;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: #2d3748;
            padding: 20px;
            border-radius: 8px;
            margin: 30px 0;
        }
        friend-link h4 {
            color: #ffcc00;
            margin-bottom: 15px;
        }
        friend-link ul {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            list-style: none;
        }
        friend-link li a {
            background: #4a5568;
            color: #e2e8f0;
            padding: 10px 18px;
            border-radius: 20px;
            text-decoration: none;
            transition: all 0.3s;
        }
        friend-link li a:hover {
            background: #4299e1;
            color: white;
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #a0aec0;
        }