*,
        *::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;
            background: #f5f7fa;
            color: #1e293b;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0f6cbf;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #084a8a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .schema-hidden {
            display: none;
        }
        .site-header {
            background: linear-gradient(135deg, #0b2a4a 0%, #1a4a7a 100%);
            color: #fff;
            padding: 0.75rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .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: -0.5px;
            background: linear-gradient(to right, #f9d56e, #f5a623);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 8px rgba(245, 166, 35, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #f9d56e;
            font-size: 1.6rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-size: 1.5rem;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            gap: 1.8rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0edff;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            color: #f9d56e;
            border-bottom-color: #f9d56e;
            text-decoration: none;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.65rem 0;
            font-size: 0.85rem;
            color: #4a5568;
            border-bottom: 1px solid #dce2e9;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem;
        }
        .breadcrumb a {
            color: #0f6cbf;
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: #8a9bb5;
        }
        .breadcrumb .current {
            color: #2d3748;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #0d3250, #1a5780);
            color: #fff;
            padding: 3rem 0 2.5rem;
            text-align: center;
            border-bottom: 6px solid #f9d56e;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 0.75rem;
            text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .hero h1 i {
            color: #f9d56e;
            margin-right: 0.3rem;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 780px;
            margin: 0 auto 1.2rem;
            opacity: 0.92;
        }
        .hero .meta-badge {
            display: inline-flex;
            gap: 1.2rem;
            flex-wrap: wrap;
            justify-content: center;
            font-size: 0.9rem;
            background: rgba(255, 255, 255, 0.12);
            padding: 0.5rem 1.5rem;
            border-radius: 40px;
            backdrop-filter: blur(4px);
        }
        .hero .meta-badge i {
            margin-right: 0.3rem;
            color: #f9d56e;
        }
        .main-content {
            padding: 2.5rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .content-body h2 {
            font-size: 2rem;
            color: #0b2a4a;
            margin: 2.2rem 0 1rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 4px solid #f9d56e;
            display: inline-block;
        }
        .content-body h3 {
            font-size: 1.5rem;
            color: #1a4a7a;
            margin: 1.8rem 0 0.8rem 0;
        }
        .content-body h4 {
            font-size: 1.2rem;
            color: #2d5f8a;
            margin: 1.2rem 0 0.5rem 0;
            font-weight: 600;
        }
        .content-body p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #2d3748;
        }
        .content-body ul,
        .content-body ol {
            margin-bottom: 1.2rem;
        }
        .content-body li {
            margin-bottom: 0.4rem;
        }
        .content-body .highlight-box {
            background: #eef5fb;
            border-left: 6px solid #f9d56e;
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .content-body .highlight-box strong {
            color: #0b2a4a;
        }
        .content-body .emoji-big {
            font-size: 1.4rem;
        }
        .feature-image {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }
        .feature-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .feature-image figcaption {
            background: #f0f4fa;
            padding: 0.7rem 1.2rem;
            font-size: 0.9rem;
            color: #4a5568;
            text-align: center;
            font-style: italic;
        }
        .sidebar {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #e9edf2;
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            color: #0b2a4a;
            margin-bottom: 1rem;
            border-bottom: 3px solid #f9d56e;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #edf2f7;
        }
        .sidebar ul li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #2d3748;
            font-size: 0.95rem;
        }
        .sidebar ul li a i {
            color: #f9d56e;
            font-size: 0.8rem;
        }
        .sidebar ul li a:hover {
            color: #0f6cbf;
            text-decoration: none;
        }
        .search-section {
            background: #e9edf2;
            padding: 2rem 0;
            margin: 1.5rem 0;
        }
        .search-box {
            display: flex;
            max-width: 640px;
            margin: 0 auto;
            border-radius: 60px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            background: #fff;
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 0.9rem 1.5rem;
            font-size: 1rem;
            outline: none;
            background: transparent;
            color: #1e293b;
        }
        .search-box input::placeholder {
            color: #8a9bb5;
        }
        .search-box button {
            background: #0b2a4a;
            color: #fff;
            border: none;
            padding: 0.9rem 2rem;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-box button:hover {
            background: #1a4a7a;
        }
        .feedback-section {
            background: #fff;
            border-radius: 16px;
            padding: 2rem 2rem 2.5rem;
            margin: 2.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #e9edf2;
        }
        .feedback-section h2 {
            margin-top: 0;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin-top: 1.5rem;
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 12px;
            padding: 1.5rem;
        }
        .feedback-card h3 {
            font-size: 1.2rem;
            color: #0b2a4a;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 1px solid #dce2e9;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #fff;
            transition: border-color 0.2s;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            outline: none;
            border-color: #f9d56e;
            box-shadow: 0 0 0 3px rgba(249, 213, 110, 0.2);
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #0b2a4a;
            color: #fff;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            justify-content: center;
        }
        .feedback-card .btn-submit:hover {
            background: #1a4a7a;
        }
        .stars-input {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #d1d5db;
            cursor: pointer;
            direction: rtl;
        }
        .stars-input input {
            display: none;
        }
        .stars-input label {
            transition: color 0.2s;
            color: #d1d5db;
        }
        .stars-input input:checked~label,
        .stars-input label:hover,
        .stars-input label:hover~label {
            color: #f9d56e;
        }
        friend-link {
            display: block;
            background: #1e2a3a;
            color: #e0edff;
            padding: 1.5rem 0;
            margin-top: 2rem;
            border-top: 6px solid #f9d56e;
        }
        friend-link .container {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2.5rem;
            justify-content: center;
        }
        friend-link a {
            color: #b8d4f0;
            font-size: 0.95rem;
            transition: color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        friend-link a:hover {
            color: #f9d56e;
            text-decoration: none;
        }
        friend-link .friend-label {
            font-weight: 700;
            color: #f9d56e;
            letter-spacing: 0.5px;
            margin-right: 0.5rem;
        }
        .site-footer {
            background: #0b1a2a;
            color: #b8c9dd;
            padding: 1.8rem 0;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            margin-bottom: 0.5rem;
        }
        .site-footer .copyright i {
            color: #f9d56e;
        }
        .site-footer a {
            color: #b8d4f0;
        }
        .site-footer a:hover {
            color: #f9d56e;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                margin-top: 2rem;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.5rem;
                padding-top: 1rem;
                border-top: 1px solid rgba(255, 255, 255, 0.15);
                margin-top: 0.75rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0;
                font-size: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .content-body h2 {
                font-size: 1.6rem;
            }
            .content-body h3 {
                font-size: 1.3rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .search-box {
                flex-direction: column;
                border-radius: 20px;
            }
            .search-box input {
                padding: 0.8rem 1.2rem;
            }
            .search-box button {
                padding: 0.8rem 1.2rem;
                justify-content: center;
            }
            .feedback-section {
                padding: 1.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .sidebar {
                padding: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 1rem;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero .meta-badge {
                font-size: 0.75rem;
                padding: 0.4rem 1rem;
                gap: 0.6rem;
            }
            .content-body p {
                font-size: 0.98rem;
            }
            .feedback-card {
                padding: 1rem;
            }
        }
        .text-accent {
            color: #f9d56e;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .fw-bold {
            font-weight: 700;
        }
        .small-meta {
            font-size: 0.85rem;
            color: #64748b;
        }
        .inline-icon {
            margin-right: 0.3rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .table-wrap th,
        .table-wrap td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #edf2f7;
        }
        .table-wrap th {
            background: #0b2a4a;
            color: #fff;
            font-weight: 600;
        }
        .table-wrap tr:last-child td {
            border-bottom: none;
        }
        .table-wrap tr:hover td {
            background: #f8fafc;
        }
        .main-nav {
            transition: all 0.3s ease;
        }