*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.8;
            color: #1a1a2e;
            background: #f8f9fc;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #e85d04;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus-visible {
            color: #b53d00;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            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;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fca311;
            text-shadow: 0 0 20px rgba(252, 163, 17, 0.3);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #fca311;
        }
        .my-logo span {
            color: #fff;
            font-weight: 400;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .nav-menu li a {
            color: #e0e0ff;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        .nav-menu li a:hover,
        .nav-menu li a:focus-visible {
            background: rgba(255, 255, 255, 0.12);
            color: #fca311;
            text-decoration: none;
        }
        .nav-menu li a.active {
            color: #fca311;
            border-bottom: 2px solid #fca311;
        }
        .breadcrumb {
            background: #fff;
            padding: 0.7rem 0;
            border-bottom: 1px solid #e9ecef;
            font-size: 0.9rem;
            color: #555;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 0.8rem;
            color: #aaa;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #e85d04;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #666;
            font-weight: 500;
        }
        main {
            padding: 2.5rem 0 3rem;
        }
        section {
            margin-bottom: 3.5rem;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0f0c29;
            margin-bottom: 1.2rem;
            letter-spacing: -0.5px;
        }
        h1 .highlight {
            color: #e85d04;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #1a1a2e;
            margin-top: 3rem;
            margin-bottom: 1rem;
            border-left: 5px solid #fca311;
            padding-left: 1.2rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #2b2d42;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #3a3d5c;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            color: #2d2d3f;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #1a1a2e;
            line-height: 1.9;
        }
        .text-muted {
            color: #6c757d;
            font-size: 0.95rem;
        }
        .feature-image {
            border-radius: 16px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
            margin: 2rem 0;
            width: 100%;
            max-width: 900px;
            height: auto;
            background: #e9ecef;
        }
        .image-caption {
            font-size: 0.9rem;
            color: #6c757d;
            text-align: center;
            margin-top: 0.5rem;
            font-style: italic;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .card {
            background: #fff;
            border-radius: 14px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.10);
        }
        .card i {
            font-size: 2rem;
            color: #fca311;
            margin-bottom: 0.8rem;
        }
        .card h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .card p {
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        blockquote {
            background: linear-gradient(135deg, #fff7ed, #ffedd5);
            border-left: 6px solid #fca311;
            padding: 1.5rem 2rem;
            border-radius: 0 16px 16px 0;
            margin: 2rem 0;
            font-style: italic;
            font-size: 1.05rem;
            color: #2d2d3f;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        blockquote cite {
            display: block;
            margin-top: 0.8rem;
            font-style: normal;
            font-weight: 600;
            color: #e85d04;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 2rem 0;
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 1rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid #e9ecef;
        }
        th {
            background: #0f0c29;
            color: #fff;
            font-weight: 600;
            white-space: nowrap;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f8f9fc;
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            max-width: 600px;
            margin: 2rem 0;
            flex-wrap: wrap;
        }
        .search-form input[type="search"] {
            flex: 1;
            min-width: 180px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #e0e0e0;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
            background: #fff;
        }
        .search-form input[type="search"]:focus {
            border-color: #fca311;
        }
        .search-form button {
            padding: 0.8rem 1.8rem;
            background: #e85d04;
            color: #fff;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-form button:hover {
            background: #b53d00;
            transform: scale(1.02);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
        }
        @media (max-width:768px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        .interaction-card {
            background: #fff;
            border-radius: 16px;
            padding: 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .interaction-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .interaction-card h3 i {
            color: #fca311;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.95rem;
            color: #1a1a2e;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fafafa;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #fca311;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .btn {
            padding: 0.7rem 2rem;
            background: #0f0c29;
            color: #fff;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn:hover {
            background: #302b63;
            transform: scale(1.02);
        }
        .btn-primary {
            background: #e85d04;
        }
        .btn-primary:hover {
            background: #b53d00;
        }
        .star-rating {
            display: flex;
            gap: 0.4rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating i {
            transition: color 0.15s, transform 0.15s;
        }
        .star-rating i:hover,
        .star-rating i:hover~i {
            color: #fca311;
            transform: scale(1.1);
        }
        .star-rating i.selected {
            color: #fca311;
        }
        .faq-item {
            background: #fff;
            border-radius: 12px;
            padding: 1.2rem 1.5rem;
            margin-bottom: 0.8rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            border: 1px solid #f0f0f0;
        }
        .faq-item summary {
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            color: #1a1a2e;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .faq-item summary::marker {
            color: #fca311;
        }
        .faq-item summary i {
            color: #fca311;
            font-size: 1.1rem;
        }
        .faq-item .faq-answer {
            padding-top: 0.8rem;
            color: #3a3d5c;
            border-top: 1px solid #f0f0f0;
            margin-top: 0.8rem;
        }
        .site-footer {
            background: #0f0c29;
            color: #c0c0e0;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width:768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .footer-inner h4 {
            color: #fca311;
            font-weight: 700;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner p,
        .footer-inner a {
            font-size: 0.95rem;
            color: #b0b0d0;
        }
        .footer-inner a:hover {
            color: #fca311;
        }
        friend-link {
            display: block;
            margin-top: 0.6rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.4rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.9rem;
            color: #8888aa;
        }
        .last-updated {
            display: inline-block;
            background: rgba(252, 163, 17, 0.12);
            padding: 0.2rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            color: #fca311;
            font-weight: 500;
            margin-bottom: 1.5rem;
        }
        @media (max-width:768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(15, 12, 41, 0.98);
                padding: 1rem 0;
                border-radius: 12px;
                gap: 0.4rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                display: block;
                padding: 0.7rem 1.2rem;
                font-size: 1rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .header-inner {
                padding: 0.2rem 0;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .search-form button {
                width: 100%;
            }
        }
        @media (max-width:480px) {
            .container {
                padding: 0 1rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            .lead {
                font-size: 1.05rem;
            }
            blockquote {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 0;
            background: #fca311;
            color: #0f0c29;
            padding: 0.6rem 1.2rem;
            font-weight: 700;
            z-index: 999;
            border-radius: 0 0 8px 0;
        }
        .skip-link:focus {
            top: 0;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .fade-up-delay-1 {
            animation-delay: 0.1s;
        }
        .fade-up-delay-2 {
            animation-delay: 0.2s;
        }
        .fade-up-delay-3 {
            animation-delay: 0.3s;
        }