*,
        *::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', sans-serif;
            background: #f5f7fa;
            color: #1a1e2b;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #b8860b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #8b6508;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0f1419 0%, #1a232e 100%);
            color: #f0f2f5;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            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: 12px;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f5d742;
            text-shadow: 0 2px 8px rgba(245, 215, 66, 0.25);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            color: #ffdf5e;
            text-decoration: none;
        }
        .my-logo i {
            margin-right: 8px;
            color: #e74c3c;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #d0d5de;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 0.92rem;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: rgba(245, 215, 66, 0.15);
            color: #f5d742;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #f0f2f5;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #eef1f5;
            padding: 10px 0;
            font-size: 0.88rem;
            border-bottom: 1px solid #dce1e8;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #7a8291;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #4a5568;
        }
        .breadcrumb a:hover {
            color: #b8860b;
        }
        .breadcrumb .current {
            color: #1a1e2b;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #0f1419 0%, #1e2a36 50%, #2c3e50 100%);
            color: #f0f2f5;
            padding: 50px 0 40px;
            text-align: center;
            border-bottom: 4px solid #f5d742;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f5d742;
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 800px;
            margin: 0 auto 20px;
            color: #c8ced8;
        }
        .hero .meta-info {
            font-size: 0.95rem;
            color: #aab2c0;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
        }
        .hero .meta-info i {
            margin-right: 6px;
            color: #f5d742;
        }
        .last-updated {
            background: rgba(245, 215, 66, 0.12);
            padding: 4px 16px;
            border-radius: 30px;
            display: inline-block;
            font-weight: 500;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            padding: 40px 0 60px;
        }
        .main-content {
            min-width: 0;
        }
        .main-content h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #0f1419;
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #f5d742;
            line-height: 1.3;
        }
        .main-content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #1e2a36;
            margin: 32px 0 12px;
            line-height: 1.4;
        }
        .main-content h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2c3e50;
            margin: 24px 0 8px;
            line-height: 1.5;
        }
        .main-content p {
            margin-bottom: 18px;
            font-size: 1.02rem;
            color: #2d3748;
        }
        .main-content ul,
        .main-content ol {
            margin: 12px 0 20px 24px;
            color: #2d3748;
        }
        .main-content li {
            margin-bottom: 8px;
        }
        .main-content .highlight-box {
            background: #fef9e7;
            border-left: 5px solid #f5d742;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .main-content .highlight-box strong {
            color: #b8860b;
        }
        .feature-image {
            margin: 30px 0 20px;
            border-radius: 14px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.10);
        }
        .feature-image figcaption {
            text-align: center;
            font-size: 0.88rem;
            color: #5a6577;
            margin-top: 8px;
            font-style: italic;
        }
        .code-block {
            background: #0f1419;
            color: #e8edf4;
            padding: 16px 20px;
            border-radius: 10px;
            font-family: 'Cascadia Code', 'Fira Code', monospace;
            font-size: 0.92rem;
            overflow-x: auto;
            margin: 20px 0;
            border-left: 4px solid #f5d742;
        }
        .code-block span {
            color: #7ecf8a;
        }
        .btn {
            display: inline-block;
            background: #b8860b;
            color: #fff;
            padding: 10px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.98rem;
            border: none;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn:hover {
            background: #9a7209;
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }
        .btn i {
            margin-right: 8px;
        }
        .sidebar {
            position: sticky;
            top: 110px;
            align-self: start;
        }
        .sidebar-card {
            background: #ffffff;
            border-radius: 14px;
            padding: 22px 20px;
            margin-bottom: 24px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #e8ecf2;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0f1419;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: #b8860b;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
        }
        .sidebar-link-list li {
            margin-bottom: 10px;
            border-bottom: 1px solid #f0f2f5;
            padding-bottom: 10px;
        }
        .sidebar-link-list a {
            font-weight: 500;
            display: block;
            padding: 4px 0;
        }
        .sidebar-link-list a:hover {
            padding-left: 6px;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid #dce1e8;
            font-size: 0.95rem;
            background: #f8f9fc;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #b8860b;
            outline: none;
            background: #fff;
        }
        .search-form button {
            background: #b8860b;
            color: #fff;
            border: none;
            padding: 10px 18px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #9a7209;
        }
        .feedback-section {
            background: #ffffff;
            border-radius: 16px;
            padding: 30px 28px;
            margin: 40px 0 30px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8ecf2;
        }
        .feedback-section h2 {
            border-bottom: none;
            margin-top: 0;
            padding-bottom: 0;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 20px;
        }
        .feedback-form label {
            font-weight: 600;
            display: block;
            margin: 14px 0 4px;
            color: #1e2a36;
        }
        .feedback-form input,
        .feedback-form textarea,
        .feedback-form select {
            width: 100%;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid #dce1e8;
            font-size: 0.95rem;
            font-family: inherit;
            background: #f8f9fc;
            transition: border 0.2s;
        }
        .feedback-form input:focus,
        .feedback-form textarea:focus,
        .feedback-form select:focus {
            border-color: #b8860b;
            outline: none;
            background: #fff;
        }
        .feedback-form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 6px 0 10px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #dce1e8;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5b342;
        }
        .site-footer {
            background: #0f1419;
            color: #c8ced8;
            padding: 40px 0 30px;
            margin-top: 40px;
            border-top: 4px solid #f5d742;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-inner h4 {
            color: #f5d742;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .footer-inner a {
            color: #aab2c0;
        }
        .footer-inner a:hover {
            color: #f5d742;
        }
        .friend-link {
            display: block;
            padding: 6px 0;
            font-weight: 500;
        }
        .friend-link a {
            display: inline-block;
            padding: 4px 0;
        }
        .copyright {
            border-top: 1px solid #2a3440;
            padding-top: 24px;
            margin-top: 16px;
            text-align: center;
            font-size: 0.9rem;
            color: #7a8291;
        }
        .copyright strong {
            color: #d0d5de;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #1a232e;
                padding: 16px 12px;
                border-radius: 12px;
                margin-top: 8px;
                gap: 4px;
            }
            .main-nav a {
                padding: 10px 14px;
                border-radius: 6px;
                width: 100%;
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .breadcrumb ul {
                font-size: 0.82rem;
                gap: 4px 8px;
            }
            .breadcrumb li+li::before {
                margin-right: 8px;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.4rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .main-content h2 {
                font-size: 1.4rem;
            }
            .main-content h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 12px;
            }
            .feedback-section {
                padding: 20px 16px;
            }
            .header-inner {
                gap: 8px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
        }
        .promo-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        .promo-table thead {
            background: #0f1419;
            color: #f5d742;
        }
        .promo-table th,
        .promo-table td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #e8ecf2;
        }
        .promo-table tbody tr:hover {
            background: #fef9e7;
        }
        .promo-table .badge {
            background: #b8860b;
            color: #fff;
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 600;
        }
        .text-small {
            font-size: 0.9rem;
            color: #5a6577;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }