*,
        *::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', sans-serif;
            line-height: 1.7;
            color: #1a2a3a;
            background: #f4f7fb;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #0d6e9e;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #094a6b;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 0.75rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0a1e2b;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.2rem;
            border-bottom: 4px solid #f5a623;
            padding-bottom: 0.6rem;
        }
        h2 {
            font-size: 1.7rem;
            border-left: 5px solid #0d6e9e;
            padding-left: 1rem;
            background: linear-gradient(to right, rgba(13, 110, 158, 0.06), transparent);
        }
        h3 {
            font-size: 1.3rem;
            color: #0d4b6e;
        }
        h4 {
            font-size: 1.1rem;
            color: #1a4a5e;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.1rem;
            color: #2c3e4a;
        }
        strong,
        b {
            color: #0a2a3a;
            font-weight: 700;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0a2a3a 0%, #0d4b6e 70%, #1a6e8e 100%);
            padding: 0.6rem 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: 0.8rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            color: #f5c542;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            padding: 0.2rem 1.2rem 0.2rem 0.8rem;
            border-radius: 40px;
            transition: 0.3s;
            text-decoration: none;
        }
        .my-logo:hover {
            background: rgba(255, 255, 255, 0.15);
            text-decoration: none;
            transform: scale(1.02);
        }
        .my-logo i {
            font-size: 2rem;
            color: #f5c542;
        }
        .my-logo span.logo-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: #bcd8e8;
            display: block;
            line-height: 1.2;
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e2edf5;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0.7rem;
            border-radius: 6px;
            transition: 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f5c542;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 5px;
            font-size: 0.85rem;
        }
        .breadcrumb-wrap {
            background: #e8eef3;
            padding: 0.7rem 0;
            border-bottom: 1px solid #d0dce6;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.9rem;
        }
        .breadcrumb li {
            margin: 0;
            padding: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 10px;
            color: #7a8f9e;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #0d6e9e;
        }
        .breadcrumb .current {
            color: #4a5f6e;
            font-weight: 600;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media(max-width:900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background: #fff;
            border-radius: 18px;
            padding: 2.2rem 2.5rem;
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.05);
        }
        @media(max-width:600px) {
            .article-body {
                padding: 1.2rem 1rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .my-logo {
                font-size: 1.4rem;
                padding: 0.2rem 0.8rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            margin-top: 0;
            border-bottom: 2px solid #eef3f7;
            padding-bottom: 0.6rem;
            margin-bottom: 1rem;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-link-list li {
            padding: 0.5rem 0;
            border-bottom: 1px solid #f0f4f8;
            margin: 0;
        }
        .sidebar-link-list li:last-child {
            border-bottom: none;
        }
        .sidebar-link-list a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-link-list a i {
            color: #f5a623;
            font-size: 0.8rem;
        }
        .search-box {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .search-box input {
            flex: 1;
            min-width: 140px;
            padding: 0.7rem 1rem;
            border: 2px solid #d0dce6;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.3s;
            background: #fafcfd;
        }
        .search-box input:focus {
            border-color: #0d6e9e;
            box-shadow: 0 0 0 4px rgba(13, 110, 158, 0.12);
        }
        .search-box button {
            background: #0d6e9e;
            color: #fff;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.25s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: #094a6b;
            transform: scale(1.03);
        }
        .comment-section,
        .rating-section {
            margin-top: 2.8rem;
            padding-top: 2rem;
            border-top: 2px solid #e8eef3;
        }
        .comment-section h3,
        .rating-section h3 {
            margin-top: 0;
        }
        .comment-form,
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 600px;
        }
        .comment-form textarea,
        .comment-form input,
        .rating-form select,
        .rating-form input {
            padding: 0.75rem 1rem;
            border: 2px solid #d0dce6;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: 0.3s;
            background: #fafcfd;
        }
        .comment-form textarea:focus,
        .comment-form input:focus,
        .rating-form select:focus,
        .rating-form input:focus {
            border-color: #0d6e9e;
            box-shadow: 0 0 0 4px rgba(13, 110, 158, 0.1);
            outline: none;
        }
        .comment-form textarea {
            min-height: 110px;
            resize: vertical;
        }
        .comment-form button,
        .rating-form button {
            background: #f5a623;
            color: #0a1e2b;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            align-self: flex-start;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: #e09515;
            transform: scale(1.03);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d0dce6;
            cursor: pointer;
        }
        .rating-stars i.active {
            color: #f5a623;
        }
        .rating-stars i:hover {
            color: #f5c542;
            transform: scale(1.1);
        }
        .site-footer {
            background: #0a1e2b;
            color: #bcd8e8;
            padding: 2.5rem 0 1.8rem;
            margin-top: 3rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        @media(max-width:700px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .footer-inner h4 {
            color: #f5c542;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: #8bbbd6;
        }
        .footer-inner a:hover {
            color: #f5c542;
        }
        .friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
            padding: 1.2rem 1.5rem;
            margin-top: 1.2rem;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .friend-link h4 {
            margin-top: 0;
            color: #f5c542;
            font-size: 1rem;
        }
        .friend-link ul {
            list-style: none;
            padding: 0;
            margin: 0.5rem 0 0;
        }
        .friend-link li {
            padding: 0.25rem 0;
            margin: 0;
        }
        .friend-link a {
            font-size: 0.92rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.8rem;
            margin-top: 1.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: #7a9aae;
        }
        .copyright a {
            color: #8bbbd6;
        }
        @media(max-width:768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 0.3rem;
                padding: 1rem 0 0.5rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                border-radius: 8px;
                background: rgba(255, 255, 255, 0.05);
            }
            .header-inner {
                align-items: center;
            }
        }
        .badge {
            display: inline-block;
            background: #f5a623;
            color: #0a1e2b;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .code-box {
            background: #0a1e2b;
            color: #f5c542;
            padding: 0.6rem 1.2rem;
            border-radius: 10px;
            font-family: 'Courier New', monospace;
            font-weight: 700;
            display: inline-block;
            font-size: 1.1rem;
            letter-spacing: 1px;
            margin: 0.3rem 0;
            border: 1px solid #f5c54233;
        }
        .highlight {
            background: #fef7e8;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.5rem;
            line-height: 1;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #6a8a9e;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 1.5rem;
            background: #f0f5fa;
            padding: 0.4rem 1rem;
            border-radius: 30px;
            width: fit-content;
        }
        .last-updated i {
            color: #f5a623;
        }
        .img-caption {
            font-size: 0.85rem;
            color: #5a7a8e;
            text-align: center;
            margin-top: 0.5rem;
            font-style: italic;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.7rem 1rem;
            border: 1px solid #d0dce6;
            text-align: left;
        }
        th {
            background: #0d4b6e;
            color: #fff;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: #f4f8fb;
        }
        .tip-card {
            background: #e6f3fa;
            border-left: 5px solid #0d6e9e;
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.2rem 0;
        }
        .tip-card strong {
            color: #0d4b6e;
        }
        .quote-box {
            background: #f9f5e8;
            border-left: 5px solid #f5a623;
            padding: 1.2rem 1.8rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
            font-style: italic;
        }
        .quote-box .author {
            font-weight: 700;
            font-style: normal;
            margin-top: 0.5rem;
            color: #0a2a3a;
        }
        .btn {
            display: inline-block;
            background: #0d6e9e;
            color: #fff;
            padding: 0.6rem 1.8rem;
            border-radius: 30px;
            font-weight: 600;
            transition: 0.25s;
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            background: #094a6b;
            transform: scale(1.03);
            text-decoration: none;
            color: #fff;
        }
        .btn-gold {
            background: #f5a623;
            color: #0a1e2b;
        }
        .btn-gold:hover {
            background: #e09515;
            color: #0a1e2b;
        }
        .schema-hidden {
            display: none;
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #0d6e9e;
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
            transition: 0.3s;
            z-index: 999;
            border: none;
            cursor: pointer;
        }
        .scroll-top:hover {
            background: #094a6b;
            transform: translateY(-4px);
        }
        @media(max-width:600px) {
            .scroll-top {
                width: 42px;
                height: 42px;
                font-size: 1.2rem;
                bottom: 20px;
                right: 20px;
            }
        }