*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f8f9fc;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #2a5c8a;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #c44536;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            color: #12121c;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.2rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid #d4a373;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #2a3b4c;
        }
        h4 {
            font-size: 1.1rem;
            color: #3d4f63;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin-bottom: 1.2rem;
            padding-left: 1.6rem;
        }
        li {
            margin-bottom: 0.3rem;
        }
        hr {
            border: 0;
            height: 2px;
            background: linear-gradient(90deg, #d4a373, #e8d5c0);
            margin: 2.5rem 0;
        }
        blockquote {
            border-left: 5px solid #d4a373;
            padding: 1rem 1.6rem;
            margin: 1.8rem 0;
            background: #f1ede8;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2e3a46;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.75rem 1rem;
            border: 1px solid #d0d5dd;
            text-align: left;
        }
        th {
            background: #e5e9f0;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: #f4f6fa;
        }
        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header.site-header {
            background: linear-gradient(135deg, #0c1a2b, #1a2f42);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f5e6d3;
            text-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
            color: #f5e6d3;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            display: block;
            letter-spacing: 1px;
            color: #b8c9dd;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            color: #d4a373;
        }
        .nav-menu {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #e0e7ef;
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: 0.2s;
            white-space: nowrap;
        }
        .nav-menu a:hover {
            background: rgba(212, 163, 115, 0.2);
            color: #f5e6d3;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 0.3rem;
            font-size: 0.85rem;
        }
        .breadcrumb {
            background: #eaeef3;
            padding: 0.6rem 20px;
            font-size: 0.85rem;
            color: #4a5a6a;
            max-width: 1200px;
            margin: 0 auto;
            border-radius: 0 0 10px 10px;
        }
        .breadcrumb a {
            color: #2a5c8a;
        }
        .breadcrumb span {
            margin: 0 0.3rem;
        }
        .search-section {
            background: #eef2f7;
            padding: 1.2rem 20px;
            border-radius: 14px;
            margin: 1.8rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.8rem;
        }
        .search-section form {
            display: flex;
            flex: 1 1 360px;
            gap: 0.5rem;
        }
        .search-section input[type="text"] {
            flex: 1;
            padding: 0.75rem 1.2rem;
            border: 1px solid #c5ccd6;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
            background: #fff;
        }
        .search-section input[type="text"]:focus {
            border-color: #2a5c8a;
            box-shadow: 0 0 0 3px rgba(42, 92, 138, 0.15);
        }
        .search-section button {
            background: #2a5c8a;
            color: #fff;
            border: none;
            padding: 0.75rem 1.8rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-section button:hover {
            background: #1a3f5e;
            transform: scale(1.02);
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.2rem;
            margin: 2rem 0;
        }
        .interact-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #e4e9f0;
        }
        .interact-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .interact-card form {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
            margin-top: 0.6rem;
        }
        .interact-card input,
        .interact-card textarea,
        .interact-card select {
            padding: 0.6rem 1rem;
            border: 1px solid #c5ccd6;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: 0.2s;
            background: #fafbfc;
        }
        .interact-card input:focus,
        .interact-card textarea:focus,
        .interact-card select:focus {
            border-color: #2a5c8a;
            box-shadow: 0 0 0 3px rgba(42, 92, 138, 0.1);
        }
        .interact-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .interact-card .btn-submit {
            background: #d4a373;
            color: #1e1e2a;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            align-self: flex-start;
        }
        .interact-card .btn-submit:hover {
            background: #c28e5f;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #d0d5dd;
            cursor: pointer;
            transition: 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
        }
        main {
            padding: 1rem 0 2.5rem;
        }
        .featured-image {
            margin: 1.8rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .last-updated {
            display: inline-block;
            background: #e8edf4;
            padding: 0.3rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #3a4a5a;
            margin-bottom: 1rem;
        }
        .toc {
            background: #f1ede8;
            border-radius: 14px;
            padding: 1.4rem 1.8rem;
            margin: 1.8rem 0;
            border-left: 5px solid #d4a373;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ul {
            list-style: none;
            padding-left: 0;
            columns: 2 220px;
        }
        .toc li {
            padding: 0.2rem 0;
        }
        .toc a {
            font-weight: 500;
        }
        .links-list {
            background: #f4f6fa;
            border-radius: 14px;
            padding: 1.4rem 1.8rem;
            margin: 1.8rem 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
        }
        .links-list a {
            font-size: 0.92rem;
            background: #fff;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            border: 1px solid #d0d5dd;
            transition: 0.2s;
        }
        .links-list a:hover {
            background: #2a5c8a;
            color: #fff;
            border-color: #2a5c8a;
            text-decoration: none;
        }
        footer.site-footer {
            background: #0c1a2b;
            color: #b8c9dd;
            padding: 2.2rem 20px 1.2rem;
            margin-top: 3rem;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #f5e6d3;
            margin-top: 0;
        }
        .footer-inner a {
            color: #b8c9dd;
        }
        .footer-inner a:hover {
            color: #f5e6d3;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem 1.4rem;
            border-radius: 12px;
            margin-top: 0.8rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.3rem;
        }
        .copyright {
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.2rem;
            margin-top: 1.8rem;
            font-size: 0.85rem;
            color: #7a8a9a;
        }
        @media (max-width: 820px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 0.8rem 0 0.4rem;
                gap: 0.2rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.6rem 0.8rem;
                width: 100%;
                border-radius: 8px;
            }
            .interact-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .toc ul {
                columns: 1;
            }
            .search-section form {
                flex-wrap: wrap;
            }
            .search-section button {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .wrapper {
                padding: 0 12px;
            }
            .header-inner {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .interact-card {
                padding: 1.2rem;
            }
        }
        .text-highlight {
            background: linear-gradient(120deg, #f5e6d3 0%, #f5e6d3 40%, transparent 60%);
            padding: 0 0.2rem;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .tag {
            display: inline-block;
            background: #d4a373;
            color: #1e1e2a;
            padding: 0.1rem 0.8rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.2rem;
            margin: 1.2rem 0;
        }
        @media (max-width: 600px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        .card-stat {
            background: #fff;
            border-radius: 14px;
            padding: 1.2rem 1.4rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #e4e9f0;
            text-align: center;
        }
        .card-stat .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #2a5c8a;
        }
        .card-stat .label {
            color: #5a6a7a;
            font-size: 0.9rem;
        }