*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fb;
            color: #1e2a3a;
            line-height: 1.75;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #1a6bb0;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #c44536;
            text-decoration: underline;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0f1a2e, #1a2a44);
            color: #fff;
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(135deg, #f7d875, #f5a623);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 12px rgba(245, 166, 35, 0.25);
            transition: transform 0.25s ease;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.55rem;
            -webkit-text-fill-color: #b0c7e7;
            color: #b0c7e7;
            display: block;
            font-weight: 400;
            letter-spacing: 2px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .main-nav {
            display: flex;
            gap: 8px 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #d4e0f0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 12px;
            border-radius: 30px;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f7d875;
            text-decoration: none;
        }
        .main-nav a.active {
            background: rgba(247, 216, 117, 0.18);
            color: #f7d875;
        }
        .breadcrumb {
            background: #e9edf4;
            padding: 10px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce2ec;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #6f7d95;
        }
        .breadcrumb a {
            color: #1a6bb0;
        }
        .breadcrumb .current {
            color: #2c3e50;
            font-weight: 600;
        }
        .hero-section {
            padding: 40px 0 20px;
        }
        .hero-section h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0f1a2e;
            margin-bottom: 12px;
        }
        .hero-section .meta {
            color: #4a5a72;
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            margin-top: 8px;
        }
        .hero-section .meta i {
            margin-right: 6px;
            color: #1a6bb0;
        }
        .search-block {
            background: #fff;
            border-radius: 48px;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
            padding: 4px 4px 4px 20px;
            display: flex;
            max-width: 500px;
            margin: 20px 0 10px;
            border: 1px solid #dfe6ef;
            transition: box-shadow 0.25s;
        }
        .search-block:focus-within {
            box-shadow: 0 4px 28px rgba(26, 107, 176, 0.15);
            border-color: #1a6bb0;
        }
        .search-block input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 12px 0;
            font-size: 1rem;
            outline: none;
            color: #1e2a3a;
        }
        .search-block input::placeholder {
            color: #8a9bb0;
        }
        .search-block button {
            background: #1a6bb0;
            border: none;
            color: #fff;
            font-weight: 600;
            padding: 10px 28px;
            border-radius: 40px;
            cursor: pointer;
            font-size: 0.95rem;
            transition: background 0.25s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-block button:hover {
            background: #0f4a7a;
            transform: scale(1.02);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0 50px;
        }
        .content-main {
            min-width: 0;
        }
        .content-sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0f1a2e;
            margin-top: 2.4rem;
            margin-bottom: 0.8rem;
            border-bottom: 3px solid #f0d58c;
            padding-bottom: 6px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a2a44;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2c3e50;
            margin-top: 1.4rem;
            margin-bottom: 0.4rem;
        }
        .article-body p {
            margin-bottom: 1.1rem;
            font-size: 1.05rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 0.6rem 0 1.2rem 1.8rem;
        }
        .article-body li {
            margin-bottom: 0.4rem;
        }
        .article-body strong {
            color: #0f1a2e;
        }
        .article-body .highlight-box {
            background: #eef4fb;
            border-left: 5px solid #1a6bb0;
            padding: 20px 24px;
            border-radius: 8px;
            margin: 1.6rem 0;
        }
        .article-body .highlight-box.gold {
            border-left-color: #f5a623;
            background: #fdf8ed;
        }
        .article-body .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 16px;
            margin: 1.4rem 0;
        }
        .stat-card {
            background: #fff;
            border-radius: 12px;
            padding: 18px 14px;
            text-align: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #e6ecf5;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.07);
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #1a6bb0;
            display: block;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #4a5a72;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .featured-image {
            border-radius: 16px;
            overflow: hidden;
            margin: 1.6rem 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .featured-image figcaption {
            background: #f0f4fa;
            padding: 10px 18px;
            font-size: 0.9rem;
            color: #2c3e50;
            font-style: italic;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 22px 20px;
            margin-bottom: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e6ecf5;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0f1a2e;
            margin-bottom: 12px;
            border-bottom: 2px solid #f0d58c;
            padding-bottom: 6px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 8px;
        }
        .sidebar-card li a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .sidebar-card li a:hover {
            background: #f0f4fa;
            text-decoration: none;
        }
        .sidebar-card li a i {
            color: #f5a623;
            width: 18px;
            text-align: center;
        }
        .rating-area {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin: 12px 0 8px;
        }
        .stars {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #dce2ec;
            cursor: pointer;
            transition: color 0.15s;
        }
        .stars i {
            transition: color 0.15s, transform 0.15s;
        }
        .stars i:hover,
        .stars i.hovered {
            color: #f5a623;
            transform: scale(1.12);
        }
        .stars i.selected {
            color: #f5a623;
        }
        .rating-value {
            font-weight: 700;
            font-size: 1.2rem;
            color: #0f1a2e;
        }
        .rating-count {
            color: #6f7d95;
            font-size: 0.9rem;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin: 16px 0 20px;
        }
        .comment-form input,
        .comment-form textarea {
            padding: 12px 16px;
            border: 1px solid #dce2ec;
            border-radius: 10px;
            font-size: 1rem;
            background: #fff;
            transition: border-color 0.2s, box-shadow 0.2s;
            font-family: inherit;
        }
        .comment-form input:focus,
        .comment-form textarea:focus {
            outline: none;
            border-color: #1a6bb0;
            box-shadow: 0 0 0 3px rgba(26, 107, 176, 0.12);
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-form button {
            align-self: flex-start;
            background: #1a6bb0;
            color: #fff;
            border: none;
            padding: 10px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
        }
        .comment-form button:hover {
            background: #0f4a7a;
            transform: scale(1.02);
        }
        .comment-item {
            background: #f8faff;
            padding: 14px 18px;
            border-radius: 12px;
            margin-bottom: 12px;
            border: 1px solid #e6ecf5;
        }
        .comment-item .author {
            font-weight: 700;
            color: #0f1a2e;
        }
        .comment-item .time {
            font-size: 0.8rem;
            color: #6f7d95;
            margin-left: 12px;
        }
        .comment-item .text {
            margin-top: 4px;
        }
        .site-footer {
            background: #0f1a2e;
            color: #c8d6e8;
            padding: 36px 0 20px;
            margin-top: 40px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        .site-footer h4 {
            color: #f7d875;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .site-footer a {
            color: #b0c7e7;
        }
        .site-footer a:hover {
            color: #f7d875;
        }
        .friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
            margin-top: 8px;
        }
        .friend-link a {
            background: rgba(255, 255, 255, 0.06);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.9rem;
            transition: background 0.2s;
        }
        .friend-link a:hover {
            background: rgba(255, 255, 255, 0.12);
            text-decoration: none;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
            margin-top: 28px;
            text-align: center;
            font-size: 0.9rem;
            color: #8a9bb0;
        }
        @media (max-width: 880px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-sidebar {
                position: static;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 680px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 16px 0 8px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 16px;
                border-radius: 8px;
                width: 100%;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .search-block {
                flex-wrap: wrap;
                border-radius: 24px;
                padding: 4px;
            }
            .search-block input {
                padding: 10px 14px;
                width: 100%;
            }
            .search-block button {
                width: 100%;
                justify-content: center;
                border-radius: 20px;
                padding: 12px;
            }
        }
        @media (max-width: 480px) {
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .breadcrumb ul {
                font-size: 0.8rem;
                gap: 4px 8px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
        }
        .last-updated {
            display: inline-block;
            background: #eef4fb;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #1a6bb0;
            font-weight: 500;
        }
        :target {
            scroll-margin-top: 90px;
        }