*,
        *::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, sans-serif;
            background: #f8f9fc;
            color: #1e293b;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: #0f172a;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #eab308;
            display: inline-block;
            padding-bottom: 0.2em;
            margin-top: 0.4em;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 6px solid #eab308;
            padding-left: 0.8rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e293b;
        }
        h4 {
            font-size: 1.15rem;
            color: #334155;
        }
        p {
            margin-bottom: 1.2em;
        }
        ul,
        ol {
            margin-bottom: 1.2em;
            padding-left: 1.6rem;
        }
        li {
            margin-bottom: 0.4em;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        header {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            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;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #facc15;
            text-transform: uppercase;
            transition: transform 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover {
            transform: scale(1.02);
            color: #eab308;
            text-decoration: none;
        }
        .my-logo i {
            font-size: 2rem;
            color: #ef4444;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: #94a3b8;
            display: block;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #facc15;
            color: #facc15;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: #facc15;
            color: #0f172a;
        }
        .main-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e2e8f0;
            padding: 0.5rem 0.9rem;
            border-radius: 6px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: #facc15;
            color: #0f172a;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 0.3rem;
        }
        .breadcrumb {
            background: #e9edf5;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d1d9e6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.4rem;
            color: #64748b;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #1e293b, #0f172a);
            color: #fff;
            padding: 2.8rem 0 2.4rem;
            text-align: center;
        }
        .hero h1 {
            color: #facc15;
            border-bottom: none;
            font-size: 2.6rem;
            margin-top: 0;
        }
        .hero p {
            font-size: 1.2rem;
            color: #cbd5e1;
            max-width: 720px;
            margin: 0.6rem auto 0;
        }
        .hero .badge {
            display: inline-block;
            background: #ef4444;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            margin-top: 0.8rem;
        }
        main {
            flex: 1;
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.4rem;
        }
        .content-area {
            background: #fff;
            border-radius: 16px;
            padding: 2rem 2.4rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 1.6rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
            align-self: start;
            position: sticky;
            top: 90px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            border-bottom: 2px solid #eab308;
            padding-bottom: 0.4rem;
            margin-top: 0;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
        }
        .sidebar li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #eef2f6;
        }
        .sidebar li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #1e293b;
            font-weight: 500;
        }
        .sidebar li a:hover {
            color: #eab308;
            text-decoration: none;
        }
        .sidebar li a i {
            color: #eab308;
            width: 1.2rem;
        }
        .featured-img {
            border-radius: 12px;
            overflow: hidden;
            margin: 1.6rem 0 2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        }
        .featured-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .featured-img figcaption {
            background: #f1f5f9;
            padding: 0.6rem 1rem;
            font-size: 0.9rem;
            color: #475569;
            text-align: center;
        }
        .search-box {
            background: #f1f5f9;
            border-radius: 12px;
            padding: 1.6rem;
            margin: 2rem 0;
        }
        .search-box form {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .search-box input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #d1d9e6;
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
        }
        .search-box input[type="text"]:focus {
            border-color: #eab308;
            box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.2);
        }
        .search-box button {
            background: #eab308;
            color: #0f172a;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-box button:hover {
            background: #d97706;
            transform: translateY(-2px);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.6rem;
            margin: 2.4rem 0 1.2rem;
        }
        .comment-box,
        .rating-box {
            background: #f8fafc;
            border-radius: 12px;
            padding: 1.6rem;
            border: 1px solid #e2e8f0;
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .comment-box textarea {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #d1d9e6;
            border-radius: 8px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 90px;
            font-family: inherit;
            outline: none;
            transition: 0.2s;
        }
        .comment-box textarea:focus {
            border-color: #eab308;
            box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.15);
        }
        .comment-box input[type="text"] {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #d1d9e6;
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
            margin-bottom: 0.6rem;
        }
        .comment-box input[type="text"]:focus {
            border-color: #eab308;
        }
        .comment-box button,
        .rating-box button {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 0.6rem 1.8rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 0.95rem;
            margin-top: 0.4rem;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d1d9e6;
            cursor: pointer;
            margin: 0.4rem 0;
        }
        .rating-stars i.active {
            color: #eab308;
        }
        .rating-stars i:hover {
            color: #eab308;
        }
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 2.4rem 0 1.2rem;
            margin-top: 2rem;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        footer h4 {
            color: #facc15;
            margin-top: 0;
            font-size: 1.1rem;
        }
        footer a {
            color: #94a3b8;
        }
        footer a:hover {
            color: #facc15;
        }
        friend-link {
            display: block;
            background: #1e293b;
            border-radius: 10px;
            padding: 1.2rem 1.6rem;
            margin: 1.2rem 0;
            border-left: 4px solid #eab308;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 1rem 0.2rem 0;
            color: #e2e8f0;
            font-weight: 500;
        }
        friend-link a:hover {
            color: #facc15;
            text-decoration: none;
        }
        .copyright {
            border-top: 1px solid #334155;
            padding-top: 1.2rem;
            margin-top: 1.6rem;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }
        .update-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #dcfce7;
            color: #166534;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: -1;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
            footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            html {
                font-size: 15px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.8rem 0 0.2rem;
                gap: 0.2rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 0.8rem;
                border-bottom: 1px solid #334155;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .content-area {
                padding: 1.2rem 1rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            footer .footer-grid {
                grid-template-columns: 1fr;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .search-box form {
                flex-direction: column;
            }
            .search-box button {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            .content-area {
                padding: 0.8rem 0.8rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
        }
        .text-highlight {
            background: linear-gradient(to right, #fef3c7, #fde68a);
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .btn-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #eab308;
            color: #0f172a;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: 0.2s;
            z-index: 50;
            border: none;
            cursor: pointer;
        }
        .btn-top:hover {
            background: #d97706;
            transform: translateY(-4px);
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.6rem 1rem;
            border: 1px solid #d1d9e6;
            text-align: left;
        }
        th {
            background: #f1f5f9;
            font-weight: 700;
        }
        .tip-box {
            background: #fffbeb;
            border-left: 6px solid #eab308;
            padding: 1rem 1.4rem;
            border-radius: 0 12px 12px 0;
            margin: 1.2rem 0;
        }
        .tip-box strong {
            color: #b45309;
        }