*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #1a6b8a;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus {
            color: #f1c40f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b2a3e 0%, #1a5276 50%, #0f3a4f 100%);
            color: #fff;
            padding: 18px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: #f1c40f;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: transform 0.2s ease;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #f1c40f;
        }
        .my-logo i {
            font-size: 2rem;
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #eaf2f8;
            font-weight: 500;
            font-size: 0.92rem;
            padding: 8px 14px;
            border-radius: 30px;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: rgba(241, 196, 15, 0.18);
            color: #f1c40f;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #f1c40f;
            color: #0b2a3e;
        }
        .breadcrumb-wrap {
            background: #eaf2f8;
            padding: 10px 0;
            border-bottom: 1px solid #d4e2ed;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            color: #3a5a70;
        }
        .breadcrumb a {
            color: #1a6b8a;
        }
        .breadcrumb a:hover {
            color: #f1c40f;
        }
        .breadcrumb span {
            color: #6c8a9e;
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: #8aa8bc;
        }
        .hero {
            background: linear-gradient(145deg, #0f3a4f, #1a6b8a);
            color: #fff;
            padding: 60px 0 50px;
            text-align: center;
            border-radius: 0 0 40px 40px;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
        }
        .hero h1 i {
            color: #f1c40f;
            margin-right: 12px;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 750px;
            margin: 0 auto 20px;
            opacity: 0.92;
        }
        .hero .meta {
            font-size: 0.95rem;
            opacity: 0.8;
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
        }
        .hero .meta i {
            margin-right: 6px;
            color: #f1c40f;
        }
        .search-section {
            background: #fff;
            padding: 28px 0;
            border-radius: 20px;
            margin: -20px auto 40px;
            max-width: 700px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .search-form {
            display: flex;
            gap: 10px;
            padding: 0 20px;
        }
        .search-form input {
            flex: 1;
            padding: 14px 20px;
            border: 2px solid #dce8f0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: #1a6b8a;
        }
        .search-form button {
            background: #1a6b8a;
            color: #fff;
            border: none;
            padding: 0 30px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #f1c40f;
            color: #0b2a3e;
            transform: scale(1.02);
        }
        .content {
            padding: 20px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
        }
        .article-body {
            background: #fff;
            border-radius: 24px;
            padding: 40px 36px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #0b2a3e;
            margin-top: 48px;
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 4px solid #f1c40f;
            display: inline-block;
        }
        .article-body h2:first-of-type {
            margin-top: 0;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1a5276;
            margin-top: 34px;
            margin-bottom: 12px;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2c5a7a;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.04rem;
            color: #1e2a3a;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 20px 28px;
        }
        .article-body li {
            margin-bottom: 10px;
            font-size: 1.04rem;
        }
        .article-body strong {
            color: #0b2a3e;
            font-weight: 700;
        }
        .article-body .highlight-box {
            background: #f0f7fd;
            border-left: 6px solid #f1c40f;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
        }
        .article-body .highlight-box i {
            color: #f1c40f;
            margin-right: 10px;
        }
        .article-img {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .article-img figcaption {
            background: #f4f7fb;
            padding: 12px 18px;
            font-size: 0.9rem;
            color: #3a5a70;
            text-align: center;
            font-style: italic;
        }
        .styled-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        .styled-table thead {
            background: #1a5276;
            color: #fff;
        }
        .styled-table th,
        .styled-table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid #e8edf2;
        }
        .styled-table tbody tr:hover {
            background: #f0f7fd;
        }
        .interaction-area {
            background: #fff;
            border-radius: 24px;
            padding: 36px;
            margin-top: 40px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
        }
        .interaction-area h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #0b2a3e;
            margin-bottom: 20px;
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 2rem;
            color: #dce0e5;
            cursor: pointer;
            margin-bottom: 20px;
            transition: color 0.2s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #f1c40f;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.1s;
        }
        .rating-stars i:hover {
            transform: scale(1.15);
        }
        .comment-form textarea {
            width: 100%;
            padding: 16px 18px;
            border: 2px solid #dce8f0;
            border-radius: 16px;
            font-size: 1rem;
            min-height: 120px;
            resize: vertical;
            outline: none;
            transition: border 0.3s;
            font-family: inherit;
        }
        .comment-form textarea:focus {
            border-color: #1a6b8a;
        }
        .comment-form .form-actions {
            display: flex;
            gap: 12px;
            margin-top: 14px;
            flex-wrap: wrap;
        }
        .comment-form button {
            padding: 12px 32px;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comment-form .btn-primary {
            background: #1a6b8a;
            color: #fff;
        }
        .comment-form .btn-primary:hover {
            background: #f1c40f;
            color: #0b2a3e;
            transform: scale(1.02);
        }
        .comment-form .btn-secondary {
            background: #eaf2f8;
            color: #1a5276;
        }
        .comment-form .btn-secondary:hover {
            background: #d4e2ed;
        }
        .site-footer {
            background: #0b2a3e;
            color: #dce8f0;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .site-footer h4 {
            color: #f1c40f;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .site-footer a {
            color: #b8d0e0;
            display: block;
            padding: 4px 0;
            font-size: 0.92rem;
        }
        .site-footer a:hover {
            color: #f1c40f;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            padding: 16px 20px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        friend-link a {
            display: inline-block;
            margin-right: 18px;
            margin-bottom: 6px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.88rem;
            color: #8aa8bc;
        }
        .copyright strong {
            color: #dce8f0;
        }
        .last-updated {
            display: inline-block;
            background: #eaf2f8;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #1a5276;
            margin-bottom: 20px;
        }
        @media (max-width: 900px) {
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .article-body {
                padding: 24px 18px;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
            .article-body h3 {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(11, 42, 62, 0.98);
                padding: 16px 12px;
                border-radius: 16px;
                margin-top: 10px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: 10px;
                width: 100%;
            }
            .header-inner {
                align-items: center;
            }
            .hero {
                padding: 40px 0 30px;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 14px 20px;
                justify-content: center;
            }
            .interaction-area {
                padding: 20px 16px;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
            .styled-table {
                font-size: 0.82rem;
            }
            .styled-table th,
            .styled-table td {
                padding: 10px 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 12px;
            }
            .article-body {
                padding: 16px 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
        }
        .main-nav,
        .hamburger,
        .search-form input,
        .search-form button,
        .comment-form textarea,
        .comment-form button,
        .rating-stars i {
            transition: all 0.25s ease;
        }
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        .gap-8 {
            gap: 8px;
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 20px;
            background: #f1c40f;
            color: #0b2a3e;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 700;
            z-index: 10000;
            transition: top 0.25s;
        }
        .skip-link:focus {
            top: 12px;
        }