*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #e10600;
            --primary-dark: #b00500;
            --secondary: #1a1a2e;
            --accent: #f5c518;
            --neutral-light: #f8f9fa;
            --neutral-mid: #6c757d;
            --neutral-dark: #212529;
            --bg-body: #ffffff;
            --text-body: #2d3436;
            --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --radius: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --max-width: 1200px;
            --header-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-main);
            color: var(--text-body);
            background: var(--bg-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--secondary);
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            padding: 0 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
            color: #fff;
        }
        .my-logo .logo-icon {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .my-logo .logo-sub {
            font-weight: 300;
            font-size: 0.7rem;
            color: var(--neutral-mid);
            display: block;
            letter-spacing: 1px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .main-nav {
            display: flex;
            gap: 4px;
            list-style: none;
        }
        .main-nav li a {
            color: rgba(255, 255, 255, 0.85);
            padding: 8px 16px;
            border-radius: var(--radius);
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .main-nav li a:hover,
        .main-nav li a:focus {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            text-decoration: none;
        }
        .main-nav li a.active {
            background: var(--primary);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: #fff;
            border-radius: 3px;
            transition: transform 0.3s, opacity 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        .breadcrumb-wrap {
            background: var(--neutral-light);
            border-bottom: 1px solid #e9ecef;
            padding: 10px 0;
            font-size: 0.85rem;
        }
        .breadcrumb {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--neutral-mid);
        }
        .breadcrumb li+li::before {
            content: "›";
            color: var(--neutral-mid);
            font-size: 1.1rem;
        }
        .breadcrumb a {
            color: var(--neutral-mid);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--neutral-dark);
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f0f1a 100%);
            color: #fff;
            padding: 60px 0 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .hero h1 .highlight {
            color: var(--accent);
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 720px;
            margin: 0 auto 24px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
        }
        .hero .last-updated {
            display: inline-block;
            background: rgba(255, 255, 255, 0.08);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero .last-updated i {
            margin-right: 6px;
        }
        section {
            padding: 50px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            line-height: 1.3;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: "";
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-top: 8px;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--neutral-mid);
            margin-bottom: 36px;
            max-width: 700px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin-top: 0;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--secondary);
            margin-top: 32px;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--neutral-dark);
            margin-top: 24px;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        p {
            margin-bottom: 16px;
            font-size: 1rem;
            line-height: 1.8;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin-top: 20px;
        }
        .content-grid.single {
            grid-template-columns: 1fr;
        }
        .card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid #f0f0f0;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
        }
        .card h3 {
            margin-top: 0;
        }
        .card h4 {
            margin-top: 12px;
        }
        .stat-highlight {
            background: var(--neutral-light);
            border-left: 4px solid var(--primary);
            padding: 16px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 20px 0;
        }
        .stat-highlight strong {
            color: var(--primary);
        }
        .emoji-lg {
            font-size: 1.8rem;
            display: inline-block;
            margin-right: 6px;
        }
        .inline-list {
            list-style: none;
            padding: 0;
            margin: 12px 0 20px;
        }
        .inline-list li {
            padding: 6px 0 6px 28px;
            position: relative;
        }
        .inline-list li::before {
            content: "🏎️";
            position: absolute;
            left: 0;
            top: 6px;
        }
        .search-section {
            background: var(--neutral-light);
            border-radius: var(--radius);
            padding: 32px 28px;
            margin: 40px 0;
            border: 1px solid #e9ecef;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: border-color 0.2s;
            outline: none;
        }
        .search-form input[type="text"]:focus {
            border-color: var(--primary);
        }
        .search-form button {
            padding: 14px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-top: 30px;
        }
        .interaction-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid #f0f0f0;
        }
        .interaction-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 12px;
        }
        .interaction-card form input,
        .interaction-card form textarea {
            padding: 12px 16px;
            border: 2px solid #e9ecef;
            border-radius: var(--radius);
            font-size: 0.95rem;
            font-family: inherit;
            transition: border-color 0.2s;
            outline: none;
            width: 100%;
        }
        .interaction-card form input:focus,
        .interaction-card form textarea:focus {
            border-color: var(--primary);
        }
        .interaction-card form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .interaction-card form button {
            padding: 12px 24px;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: var(--radius);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .interaction-card form button:hover {
            background: #2c2c4a;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.2s, transform 0.1s;
            color: #ddd;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--accent);
            transform: scale(1.1);
        }
        friend-link {
            display: block;
            padding: 24px 0;
        }
        friend-link .friend-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            list-style: none;
            justify-content: center;
        }
        friend-link .friend-list li a {
            color: var(--neutral-mid);
            font-size: 0.9rem;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        friend-link .friend-list li a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
            text-decoration: none;
        }
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.8);
            padding: 32px 0 24px;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-top: 20px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer a {
            color: var(--accent);
        }
        .site-footer a:hover {
            color: #fff;
        }
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .content-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--secondary);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 4px;
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
                border-top: 1px solid rgba(255, 255, 255, 0.05);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav li a {
                padding: 12px 16px;
                font-size: 1rem;
                display: block;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero {
                padding: 40px 0 32px;
            }
            section {
                padding: 32px 0;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .card {
                padding: 20px;
            }
            .interaction-card {
                padding: 20px;
            }
            .breadcrumb-wrap {
                font-size: 0.78rem;
                padding: 8px 0;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo .logo-sub {
                font-size: 0.6rem;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 14px;
            }
            .stat-highlight {
                padding: 12px 16px;
            }
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .gap-8 {
            gap: 8px;
        }
        .rounded-full {
            border-radius: 999px;
        }
        .bg-light {
            background: var(--neutral-light);
        }
        .fw-700 {
            font-weight: 700;
        }
        .text-primary {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .image-wrapper {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .image-wrapper img {
            width: 100%;
            object-fit: cover;
        }
        .image-wrapper .caption {
            padding: 12px 18px;
            background: var(--neutral-light);
            font-size: 0.85rem;
            color: var(--neutral-mid);
            text-align: center;
        }