*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f4f7;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #e10600;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b00500;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #0a0a1a;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
            border-left: 6px solid #e10600;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid #e10600;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1rem;
        }
        .text-small {
            font-size: 0.9rem;
            color: #5a5a7a;
        }
        .text-muted {
            color: #6b6b8a;
        }
        .fw-bold {
            font-weight: 700;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: #0a0a1a;
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo span {
            color: #e10600;
        }
        .my-logo:hover {
            color: #e10600;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.75rem;
            font-weight: 400;
            color: #aaa;
            margin-left: 0.3rem;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #ddd;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .main-nav a:hover {
            color: #fff;
            border-bottom-color: #e10600;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            line-height: 1;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e8e8ee;
            padding: 0.6rem 0;
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #888;
        }
        .breadcrumb a {
            color: #444;
        }
        .breadcrumb .current {
            color: #e10600;
            font-weight: 600;
        }
        .hero-section {
            background: linear-gradient(145deg, #0a0a1a 0%, #1c1c3a 100%);
            color: #fff;
            padding: 2.8rem 0 2.2rem;
            margin-bottom: 2rem;
        }
        .hero-section h1 {
            color: #fff;
            border-left-color: #e10600;
            font-size: 2.6rem;
        }
        .hero-section .lead {
            font-size: 1.2rem;
            color: #ccc;
            max-width: 780px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1.2rem;
            font-size: 0.95rem;
            color: #aaa;
        }
        .hero-meta span i {
            color: #e10600;
            margin-right: 0.3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 2.2rem;
            margin: 2rem 0 3rem;
        }
        .content-main {
            min-width: 0;
        }
        .content-sidebar {
            position: sticky;
            top: 5.5rem;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 12px;
            padding: 1.4rem;
            margin-bottom: 1.6rem;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
            border: 1px solid #e6e6ef;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            border-bottom: 1px solid #eee;
            padding-bottom: 0.4rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 0.3rem 0;
            border-bottom: 1px solid #f0f0f5;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-size: 0.92rem;
        }
        .section-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.8rem 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #ececf2;
        }
        .section-card h2 {
            margin-top: 0.2rem;
        }
        .feature-img {
            border-radius: 10px;
            margin: 1.2rem 0 1.6rem;
            width: 100%;
            max-height: 420px;
            object-fit: cover;
            background: #ddd;
        }
        .insight-box {
            background: #f9f9fd;
            border-left: 4px solid #e10600;
            padding: 1.2rem 1.4rem;
            margin: 1.2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .insight-box p:last-child {
            margin-bottom: 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            margin: 1.2rem 0;
        }
        .stat-item {
            background: #f4f4f9;
            border-radius: 10px;
            padding: 1rem;
            text-align: center;
        }
        .stat-item .number {
            font-size: 2rem;
            font-weight: 800;
            color: #e10600;
            display: block;
        }
        .stat-item .label {
            font-size: 0.85rem;
            color: #555;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fafafe;
            border-radius: 8px;
            overflow: hidden;
        }
        th,
        td {
            padding: 0.7rem 0.9rem;
            text-align: left;
            border-bottom: 1px solid #e4e4ee;
        }
        th {
            background: #0a0a1a;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f0f0f8;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin: 1rem 0;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 0.95rem;
            transition: 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #e10600;
            outline: none;
        }
        .search-form button {
            background: #e10600;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 0.95rem;
        }
        .search-form button:hover {
            background: #b00500;
        }
        .comment-box,
        .rating-box {
            background: #f9f9fd;
            border-radius: 10px;
            padding: 1.2rem 1.4rem;
            margin: 1rem 0 1.6rem;
            border: 1px solid #e6e6ef;
        }
        .comment-box textarea,
        .rating-box textarea {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 80px;
            transition: 0.2s;
        }
        .comment-box textarea:focus,
        .rating-box textarea:focus {
            border-color: #e10600;
            outline: none;
        }
        .comment-box input[type="text"],
        .rating-box input[type="text"] {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 0.95rem;
            margin-bottom: 0.6rem;
            transition: 0.2s;
        }
        .comment-box input[type="text"]:focus,
        .rating-box input[type="text"]:focus {
            border-color: #e10600;
            outline: none;
        }
        .comment-box button,
        .rating-box button {
            background: #0a0a1a;
            color: #fff;
            border: none;
            padding: 0.6rem 1.6rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 0.9rem;
            margin-top: 0.4rem;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #e10600;
        }
        .star-rating {
            display: flex;
            gap: 0.4rem;
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            margin-bottom: 0.6rem;
            flex-wrap: wrap;
        }
        .star-rating i {
            transition: 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f5b342;
        }
        .site-footer {
            background: #0a0a1a;
            color: #bbb;
            padding: 2.2rem 0 1.2rem;
            margin-top: 3rem;
            border-top: 4px solid #e10600;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 1.8rem;
        }
        .footer-grid h4 {
            color: #fff;
            font-size: 1.05rem;
            margin-top: 0;
            margin-bottom: 0.6rem;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-grid ul li {
            padding: 0.2rem 0;
        }
        .footer-grid ul li a {
            color: #aaa;
            font-size: 0.9rem;
        }
        .footer-grid ul li a:hover {
            color: #e10600;
        }
        .copyright {
            border-top: 1px solid #2a2a4a;
            padding-top: 1.2rem;
            font-size: 0.85rem;
            text-align: center;
            color: #777;
        }
        .copyright a {
            color: #e10600;
        }
        friend-link {
            display: block;
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #888;
        }
        friend-link a {
            color: #e10600;
            margin: 0 0.3rem;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-sidebar {
                position: static;
                order: 2;
            }
            .content-main {
                order: 1;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .section-card {
                padding: 1.2rem 1rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
                padding: 0.8rem 0 0.4rem;
                border-top: 1px solid #2a2a4a;
                margin-top: 0.6rem;
            }
            .main-nav a {
                padding: 0.4rem 0;
                width: 100%;
                border-bottom: 1px solid #2a2a4a;
            }
            #nav-toggle:checked~.main-nav {
                display: flex;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.2rem;
            }
        }
        @media (max-width: 540px) {
            .container {
                padding: 0 0.8rem;
            }
            h1 {
                font-size: 1.6rem;
                padding-left: 0.6rem;
            }
            h2 {
                font-size: 1.25rem;
            }
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .hero-section .lead {
                font-size: 1rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .search-form input[type="text"] {
                min-width: 120px;
            }
            .star-rating {
                font-size: 1.5rem;
            }
            .breadcrumb ol {
                font-size: 0.75rem;
            }
        }
        .mb-1 {
            margin-bottom: 0.6rem;
        }
        .mb-2 {
            margin-bottom: 1.2rem;
        }
        .mt-2 {
            margin-top: 1.2rem;
        }
        .mt-3 {
            margin-top: 2rem;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
        }
        .gap-1 {
            gap: 0.6rem;
        }
        .gap-2 {
            gap: 1.2rem;
        }
        .no-underline:hover {
            text-decoration: none;
        }
        .bg-light {
            background: #f9f9fd;
        }
        .rounded {
            border-radius: 8px;
        }
        .shadow-sm {
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
        }
        .inline-icon {
            margin-right: 0.3rem;
            color: #e10600;
        }
        .tag {
            display: inline-block;
            background: #e10600;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.15rem 0.6rem;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .tag-blue {
            background: #0a0a1a;
        }
        .divider {
            border: none;
            border-top: 2px solid #ececf2;
            margin: 1.8rem 0;
        }