* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f4f6f9;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #e94560;
            text-decoration: none;
            transition: 0.3s;
        }
        a:hover {
            color: #1a1a2e;
            text-decoration: underline;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f0c29, #1a1a2e, #16213e);
            padding: 20px 0;
            border-bottom: 3px solid #e94560;
            position: sticky;
            top: 0;
            z-index: 999;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .header-flex {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(45deg, #e94560, #ff6b6b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-transform: uppercase;
            cursor: pointer;
        }
        .my-logo:hover {
            opacity: 0.8;
        }
        .main-nav {
            display: flex;
            gap: 24px;
            align-items: center;
        }
        .main-nav a {
            color: #c9d1d9;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover {
            color: #fff;
            border-bottom-color: #e94560;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #fff;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px 10px;
        }
        @media(max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: #1a1a2e;
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 30px;
                gap: 15px;
                transform: translateX(-100%);
                transition: transform 0.4s ease;
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
            }
            .main-nav.open {
                transform: translateX(0);
            }
            .hamburger {
                display: block;
            }
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid #e9ecef;
        }
        .breadcrumb-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: #6c757d;
        }
        .breadcrumb-list li::after {
            content: "/";
            margin-left: 8px;
            color: #adb5bd;
        }
        .breadcrumb-list li:last-child::after {
            content: "";
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 40px 0;
        }
        .article-card {
            background: #fff;
            border-radius: 14px;
            padding: 40px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #1a1a2e;
            line-height: 1.2;
            margin-bottom: 10px;
        }
        .article-meta {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
            color: #6c757d;
            font-size: 0.85rem;
            margin-bottom: 30px;
            border-bottom: 1px solid #eee;
            padding-bottom: 15px;
        }
        .article-meta i {
            margin-right: 5px;
            color: #e94560;
        }
        h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #1a1a2e;
            margin: 45px 0 18px;
            padding-left: 14px;
            border-left: 4px solid #e94560;
        }
        h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #2c3e50;
            margin: 30px 0 12px;
        }
        h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #555;
            margin: 20px 0 10px;
            font-style: italic;
        }
        p {
            margin-bottom: 16px;
            text-align: justify;
        }
        .featured-img {
            width: 100%;
            border-radius: 12px;
            margin: 25px 0;
            box-shadow: 0 6px 25px rgba(0, 0, 0, 0.12);
        }
        .img-caption {
            font-size: 0.85rem;
            color: #6c757d;
            text-align: center;
            margin-top: -10px;
            margin-bottom: 25px;
        }
        .callout {
            background: #f8f9fa;
            border-left: 4px solid #e94560;
            padding: 20px 24px;
            border-radius: 0 10px 10px 0;
            margin: 30px 0;
            font-size: 0.95rem;
        }
        .callout i {
            color: #e94560;
            margin-right: 8px;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            font-size: 0.9rem;
        }
        .data-table th,
        .data-table td {
            border: 1px solid #e9ecef;
            padding: 12px 15px;
            text-align: left;
        }
        .data-table th {
            background: #1a1a2e;
            color: #fff;
            font-weight: 600;
        }
        .data-table tr:nth-child(even) {
            background: #f8f9fa;
        }
        .search-box {
            background: #f0f2f5;
            padding: 25px;
            border-radius: 12px;
            margin: 30px 0;
            text-align: center;
        }
        .search-box form {
            display: flex;
            max-width: 500px;
            margin: 0 auto;
            border-radius: 30px;
            overflow: hidden;
            background: #fff;
            box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
        }
        .search-box input[type="text"] {
            flex: 1;
            border: none;
            padding: 14px 20px;
            font-size: 0.95rem;
            outline: none;
        }
        .search-box button {
            background: #e94560;
            border: none;
            color: #fff;
            padding: 14px 22px;
            cursor: pointer;
            font-size: 1rem;
            transition: 0.3s;
        }
        .search-box button:hover {
            background: #c0392b;
        }
        .user-interaction {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 40px 0;
        }
        @media(max-width: 768px) {
            .user-interaction {
                grid-template-columns: 1fr;
            }
        }
        .interaction-card {
            background: #f8f9fa;
            border-radius: 14px;
            padding: 30px;
            border: 1px solid #e9ecef;
        }
        .interaction-card h3 {
            margin-top: 0;
            font-size: 1.15rem;
            color: #1a1a2e;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 0.9rem;
            margin-bottom: 10px;
            font-family: inherit;
        }
        .interaction-card button {
            background: #1a1a2e;
            color: #fff;
            border: none;
            padding: 12px 24px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: 0.3s;
            width: 100%;
        }
        .interaction-card button:hover {
            background: #e94560;
        }
        .site-footer {
            background: #0f0c29;
            padding: 50px 0 30px;
            margin-top: 40px;
            color: #a0a8b4;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        @media(max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        .footer-links a {
            display: block;
            color: #a0a8b4;
            padding: 4px 0;
            font-size: 0.9rem;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .copy-bar {
            border-top: 1px solid #333;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #6c757d;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            padding: 15px 0;
            margin: 20px 0;
            border-top: 1px solid #333;
            font-size: 0.85rem;
        }
        friend-link a {
            color: #a0a8b4;
        }
        friend-link a:hover {
            color: #fff;
        }
        @media(max-width: 600px) {
            .article-card {
                padding: 20px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
        }