*,
        *::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, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            background: #f4f7fb;
            color: #1e2a3e;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #e74c3c;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.6rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2e 0%, #1a3a5c 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f1c40f;
            text-shadow: 0 2px 8px rgba(241, 196, 15, 0.3);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #f1c40f;
        }
        .my-logo span {
            color: #fff;
            font-weight: 300;
        }
        .my-logo small {
            font-size: 0.65rem;
            display: block;
            color: #aac4e0;
            letter-spacing: 2px;
            font-weight: 400;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #eaf0f8;
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f1c40f;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 0.35rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #eef3f9;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #dce4ed;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #2c3e50;
        }
        .breadcrumb .current {
            color: #c0392b;
            font-weight: 600;
        }
        main {
            padding: 2.2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 920px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0b1a2e;
            margin-bottom: 0.6rem;
            letter-spacing: -0.5px;
        }
        article h1 i {
            color: #c0392b;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            color: #5d6d7e;
            font-size: 0.9rem;
            margin-bottom: 1.6rem;
            border-bottom: 1px solid #e0e8f0;
            padding-bottom: 1rem;
        }
        .article-meta i {
            margin-right: 0.3rem;
        }
        .last-updated {
            font-weight: 600;
            color: #c0392b;
        }
        article h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #0b1a2e;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-left: 5px solid #c0392b;
            padding-left: 1rem;
        }
        article h3 {
            font-size: 1.45rem;
            font-weight: 600;
            color: #1a3a5c;
            margin-top: 2rem;
            margin-bottom: 0.7rem;
        }
        article h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2c3e50;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        article p {
            margin-bottom: 1.2rem;
            color: #2c3e50;
        }
        article p strong {
            color: #0b1a2e;
        }
        .featured-image {
            margin: 1.8rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #fff;
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #5d6d7e;
            border-top: 1px solid #e8edf4;
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.6rem;
            margin-bottom: 1.6rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8edf4;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0b1a2e;
            margin-bottom: 1rem;
            border-bottom: 2px solid #f1c40f;
            padding-bottom: 0.5rem;
        }
        .link-list {
            list-style: none;
            padding: 0;
        }
        .link-list li {
            padding: 0.5rem 0;
            border-bottom: 1px solid #f0f4fa;
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .link-list a i {
            color: #c0392b;
            width: 1.2rem;
        }
        .search-box {
            display: flex;
            gap: 0.4rem;
        }
        .search-box input {
            flex: 1;
            padding: 0.6rem 1rem;
            border: 2px solid #dce4ed;
            border-radius: 30px;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-box input:focus {
            border-color: #c0392b;
        }
        .search-box button {
            background: #c0392b;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.6rem 1.2rem;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.25s;
        }
        .search-box button:hover {
            background: #a93226;
        }
        .feedback-form {
            margin-top: 1rem;
        }
        .feedback-form label {
            font-weight: 600;
            font-size: 0.9rem;
            color: #1a3a5c;
            display: block;
            margin-bottom: 0.3rem;
        }
        .feedback-form textarea,
        .feedback-form input[type="number"],
        .feedback-form input[type="text"] {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 2px solid #dce4ed;
            border-radius: 12px;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.2s;
            font-family: inherit;
            margin-bottom: 0.8rem;
        }
        .feedback-form textarea:focus,
        .feedback-form input:focus {
            border-color: #c0392b;
        }
        .feedback-form textarea {
            min-height: 80px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #f1c40f;
            margin-bottom: 0.8rem;
            cursor: pointer;
        }
        .star-rating i {
            transition: transform 0.15s;
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .btn-submit {
            background: #c0392b;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.65rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
        }
        .btn-submit:hover {
            background: #a93226;
            transform: translateY(-2px);
        }
        .btn-submit i {
            margin-right: 0.5rem;
        }
        .wiki-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .wiki-table th {
            background: #0b1a2e;
            color: #fff;
            padding: 0.8rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .wiki-table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #eef3f9;
        }
        .wiki-table tr:last-child td {
            border-bottom: none;
        }
        .wiki-table tr:hover td {
            background: #f8fafc;
        }
        .site-footer {
            background: #0b1a2e;
            color: #cbd8e8;
            padding: 2.5rem 0 1.8rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (max-width: 720px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .footer-grid h4 {
            color: #f1c40f;
            font-size: 1.1rem;
            margin-bottom: 0.8rem;
        }
        .footer-grid a {
            color: #aac4e0;
        }
        .footer-grid a:hover {
            color: #f1c40f;
        }
        friend-link {
            display: block;
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 1px solid #1e3a5a;
        }
        friend-link a {
            color: #aac4e0;
            margin-right: 1.5rem;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            color: #f1c40f;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #1e3a5a;
            font-size: 0.85rem;
            color: #7f95b0;
        }
        .copyright strong {
            color: #cbd8e8;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #0b1a2e;
                padding: 1rem 0 0.8rem;
                margin-top: 0.8rem;
                border-top: 1px solid #1e3a5a;
                gap: 0.1rem;
            }
            .main-nav a {
                padding: 0.6rem 1rem;
                border-radius: 0;
                width: 100%;
                border-bottom: 1px solid #1a2a40;
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            article h1 {
                font-size: 1.8rem;
            }
            article h2 {
                font-size: 1.5rem;
            }
            .sidebar {
                position: static;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .wiki-table {
                font-size: 0.8rem;
            }
            .wiki-table th,
            .wiki-table td {
                padding: 0.5rem 0.6rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            article h1 {
                font-size: 1.5rem;
            }
            .article-meta {
                font-size: 0.75rem;
                gap: 0.6rem;
            }
            .search-box {
                flex-direction: column;
            }
            .search-box button {
                width: 100%;
            }
        }
        .text-highlight {
            background: linear-gradient(to right, #f1c40f22, #f1c40f11);
            padding: 0.1rem 0.4rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.3rem;
            margin-right: 0.3rem;
        }
        .callout {
            background: #eef7ff;
            border-left: 4px solid #c0392b;
            padding: 1rem 1.4rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .callout p:last-child {
            margin-bottom: 0;
        }
        .tag {
            display: inline-block;
            background: #f1c40f20;
            color: #8a6d00;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-right: 0.3rem;
        }