*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Arial, sans-serif;
            background: #f5f7fc;
            color: #1e293b;
            line-height: 1.8;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a3a6b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ffb300;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.8rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            color: #0f1f3d;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a33 0%, #1a2f4f 100%);
            color: #fff;
            padding: 0 0 12px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            letter-spacing: 1.5px;
            background: linear-gradient(135deg, #ffd700, #ffb300);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: inline-block;
        }
        .my-logo i {
            -webkit-text-fill-color: #ffd700;
            margin-right: 6px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .main-nav {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .main-nav li a {
            color: #e0e7f0;
            font-size: 0.92rem;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 30px;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .main-nav li a:hover {
            background: rgba(255, 215, 0, 0.18);
            color: #ffd700;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.7rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 6px;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: transparent;
            padding: 10px 20px 6px 20px;
            max-width: 1200px;
            margin: 0 auto;
            font-size: 0.85rem;
            color: #9aaec9;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: #b8c9e0;
        }
        .breadcrumb a:hover {
            color: #ffd700;
        }
        .breadcrumb span {
            color: #ffd700;
        }
        .hero-section {
            background: linear-gradient(135deg, #0f1f3d, #1a3a6b);
            color: #fff;
            padding: 48px 20px 40px;
            text-align: center;
            border-bottom: 4px solid #ffd700;
        }
        .hero-section h1 {
            font-size: 2.8rem;
            color: #ffd700;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.92;
            color: #e8edf5;
        }
        .hero-section .last-updated {
            display: inline-block;
            margin-top: 18px;
            background: rgba(255, 215, 0, 0.15);
            padding: 6px 22px;
            border-radius: 40px;
            font-size: 0.9rem;
            color: #ffd700;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            padding: 40px 20px 60px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .main-content {
            background: #fff;
            border-radius: 18px;
            padding: 36px 40px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }
        .main-content h2 {
            font-size: 2rem;
            color: #0f1f3d;
            border-left: 6px solid #ffd700;
            padding-left: 18px;
            margin: 48px 0 20px 0;
        }
        .main-content h3 {
            font-size: 1.55rem;
            color: #1a2f4f;
            margin: 36px 0 14px 0;
            padding-bottom: 6px;
            border-bottom: 2px solid #eef2f7;
        }
        .main-content h4 {
            font-size: 1.25rem;
            color: #2a4060;
            margin: 28px 0 12px 0;
            font-weight: 600;
        }
        .main-content p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #2d3a4f;
        }
        .main-content ul,
        .main-content ol {
            margin-bottom: 22px;
        }
        .main-content li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .main-content .highlight-box {
            background: #f0f4fe;
            border-left: 5px solid #ffd700;
            padding: 20px 24px;
            border-radius: 10px;
            margin: 28px 0;
        }
        .main-content .highlight-box strong {
            color: #0f1f3d;
        }
        .featured-image {
            margin: 32px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .featured-image figcaption {
            background: #f0f4fe;
            padding: 12px 20px;
            font-size: 0.92rem;
            color: #3a4a62;
            text-align: center;
            font-style: italic;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 22px;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.05);
        }
        .sidebar-card h3 {
            font-size: 1.3rem;
            color: #0f1f3d;
            margin-bottom: 14px;
            border-bottom: 3px solid #ffd700;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid #edf2f7;
        }
        .sidebar-card ul li a {
            font-weight: 500;
        }
        .sidebar-card ul li a:hover {
            color: #ffb300;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #dce3ed;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: #ffd700;
        }
        .search-form button {
            background: #0f1f3d;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0 22px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #1a3a6b;
        }
        .comment-section,
        .rating-section {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 2px solid #eef2f7;
        }
        .comment-section h3,
        .rating-section h3 {
            font-size: 1.6rem;
            margin-bottom: 18px;
        }
        .comment-form textarea,
        .rating-form select {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #dce3ed;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            outline: none;
            transition: border 0.3s;
            background: #fafcff;
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        .comment-form textarea:focus,
        .rating-form select:focus {
            border-color: #ffd700;
        }
        .comment-form button,
        .rating-form button {
            background: #0f1f3d;
            color: #fff;
            border: none;
            padding: 12px 34px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            margin-top: 12px;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: #1a3a6b;
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rating-form select {
            max-width: 220px;
        }
        friend-link {
            display: block;
            padding: 20px 0;
            border-top: 1px solid #e0e7f0;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 18px 30px;
            justify-content: center;
        }
        friend-link ul li a {
            color: #1a3a6b;
            font-weight: 500;
        }
        friend-link ul li a:hover {
            color: #ffb300;
        }
        .site-footer {
            background: #0b1a33;
            color: #b8c9e0;
            padding: 36px 20px 28px;
            text-align: center;
        }
        .site-footer .copyright {
            font-size: 0.95rem;
            opacity: 0.85;
            letter-spacing: 0.3px;
        }
        .site-footer .copyright strong {
            color: #ffd700;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0f1f3d;
                padding: 16px 0 20px 0;
                border-radius: 0 0 16px 16px;
                margin-top: 10px;
                gap: 2px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav li a {
                padding: 10px 20px;
                font-size: 1rem;
                display: block;
                border-radius: 0;
            }
            .header-top {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-section p {
                font-size: 1rem;
            }
            .main-content {
                padding: 24px 18px;
            }
            .main-content h2 {
                font-size: 1.6rem;
                padding-left: 14px;
            }
            .main-content h3 {
                font-size: 1.3rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.78rem;
                padding: 8px 16px 4px 16px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 12px;
            }
        }
        @media (max-width: 480px) {
            .hero-section {
                padding: 32px 16px 28px;
            }
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .main-content {
                padding: 18px 14px;
            }
            .main-content p {
                font-size: 0.98rem;
            }
            .main-content h2 {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 12px;
            }
        }
        .sidebar-card,
        .main-content,
        .featured-image {
            transition: transform 0.2s ease;
        }
        .sidebar-card:hover {
            transform: translateY(-2px);
        }
        :focus-visible {
            outline: 3px solid #ffd700;
            outline-offset: 2px;
        }
        button:focus-visible,
        a:focus-visible {
            outline: 3px solid #ffd700;
            outline-offset: 2px;
        }