* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --f1-red: #e10600;
            --f1-dark: #1a1a2e;
            --f1-grey: #2d2d44;
            --f1-light: #f5f5f5;
            --f1-white: #ffffff;
            --f1-accent: #ffd700;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: var(--f1-light);
            color: #222;
            line-height: 1.75;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--f1-red);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #b00500;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--f1-dark);
            color: var(--f1-white);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--f1-white);
            background: linear-gradient(135deg, var(--f1-red), #ff4d4d);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--f1-red);
            font-size: 1.6rem;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.3px;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: var(--f1-white);
            font-size: 1.5rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--f1-red);
            background: rgba(225, 6, 0, 0.15);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
        }
        .nav-menu li a {
            color: rgba(255, 255, 255, 0.85);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: var(--f1-red);
            color: #fff;
            text-decoration: none;
        }
        .nav-menu li a i {
            margin-right: 6px;
        }
        .breadcrumb {
            background: var(--f1-white);
            padding: 10px 0;
            border-bottom: 1px solid #e0e0e0;
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 12px;
            color: #999;
            font-size: 1.2rem;
        }
        .breadcrumb ol li a {
            color: var(--f1-grey);
        }
        .breadcrumb ol li a:hover {
            color: var(--f1-red);
        }
        .breadcrumb ol li [aria-current="page"] {
            color: var(--f1-red);
            font-weight: 600;
        }
        main {
            flex: 1;
            padding: 32px 0 48px;
        }
        .page-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        @media(max-width:992px) {
            .page-grid {
                grid-template-columns: 1fr;
            }
        }
        .content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--f1-dark);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .content h1 span {
            color: var(--f1-red);
        }
        .content .last-updated {
            display: block;
            font-size: 0.85rem;
            color: #777;
            margin-bottom: 24px;
            border-left: 4px solid var(--f1-red);
            padding-left: 14px;
        }
        .content h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--f1-dark);
            margin: 40px 0 16px;
            border-bottom: 3px solid var(--f1-red);
            padding-bottom: 6px;
        }
        .content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--f1-grey);
            margin: 28px 0 12px;
        }
        .content h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #444;
            margin: 20px 0 8px;
        }
        .content p {
            margin-bottom: 16px;
            font-size: 1.05rem;
        }
        .content ul,
        .content ol {
            margin: 12px 0 20px 24px;
        }
        .content li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .content .highlight-box {
            background: var(--f1-white);
            border-left: 6px solid var(--f1-red);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            box-shadow: var(--shadow);
            margin: 24px 0;
        }
        .content .highlight-box strong {
            color: var(--f1-red);
        }
        .content .emoji-big {
            font-size: 1.4rem;
            margin-right: 4px;
        }
        .content img.featured-img {
            width: 100%;
            margin: 20px 0 12px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .content .img-caption {
            font-size: 0.85rem;
            color: #888;
            text-align: center;
            margin-top: -8px;
            margin-bottom: 24px;
        }
        .inline-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 20px 0;
        }
        .inline-links a {
            background: var(--f1-white);
            border: 1px solid #ddd;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--f1-dark);
            transition: var(--transition);
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
        }
        .inline-links a:hover {
            background: var(--f1-red);
            color: #fff;
            border-color: var(--f1-red);
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(225, 6, 0, 0.25);
        }
        .inline-links a i {
            margin-right: 6px;
        }
        .sidebar {
            background: var(--f1-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px 20px;
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            color: var(--f1-dark);
            border-bottom: 2px solid var(--f1-red);
            padding-bottom: 8px;
            margin-bottom: 16px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar ul li {
            margin-bottom: 10px;
        }
        .sidebar ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            border-radius: 8px;
            background: var(--f1-light);
            color: var(--f1-dark);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .sidebar ul li a:hover {
            background: var(--f1-red);
            color: #fff;
            text-decoration: none;
            transform: translateX(4px);
        }
        .sidebar ul li a i {
            width: 20px;
            text-align: center;
            color: var(--f1-red);
        }
        .sidebar ul li a:hover i {
            color: #fff;
        }
        .search-section {
            background: var(--f1-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 24px;
            margin: 32px 0;
        }
        .search-section h2 {
            margin-top: 0;
            border-bottom: none;
            font-size: 1.6rem;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border: 2px solid #e0e0e0;
            border-radius: 60px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
            background: var(--f1-light);
        }
        .search-form input:focus {
            border-color: var(--f1-red);
            box-shadow: 0 0 0 4px rgba(225, 6, 0, 0.1);
        }
        .search-form button {
            padding: 14px 32px;
            background: var(--f1-red);
            color: #fff;
            border: none;
            border-radius: 60px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #b00500;
            transform: scale(1.02);
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 32px 0;
        }
        @media(max-width:768px) {
            .interact-grid {
                grid-template-columns: 1fr;
            }
        }
        .interact-card {
            background: var(--f1-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px 22px;
        }
        .interact-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            border-bottom: 2px solid var(--f1-red);
            padding-bottom: 8px;
            margin-bottom: 16px;
        }
        .interact-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .interact-card form input,
        .interact-card form textarea,
        .interact-card form select {
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
            background: var(--f1-light);
            font-family: inherit;
        }
        .interact-card form input:focus,
        .interact-card form textarea:focus,
        .interact-card form select:focus {
            border-color: var(--f1-red);
            box-shadow: 0 0 0 4px rgba(225, 6, 0, 0.08);
        }
        .interact-card form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .interact-card form button {
            padding: 12px 24px;
            background: var(--f1-red);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .interact-card form button:hover {
            background: #b00500;
            transform: translateY(-2px);
        }
        .interact-card .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 1.8rem;
            color: #ffd700;
            cursor: pointer;
        }
        .interact-card .rating-stars i {
            transition: var(--transition);
        }
        .interact-card .rating-stars i:hover {
            transform: scale(1.2);
        }
        footer {
            background: var(--f1-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 36px 0 20px;
            margin-top: 40px;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 24px;
        }
        @media(max-width:768px) {
            footer .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        footer h4 {
            color: var(--f1-white);
            font-size: 1.1rem;
            margin-bottom: 12px;
            border-bottom: 2px solid var(--f1-red);
            padding-bottom: 6px;
            display: inline-block;
        }
        footer a {
            color: rgba(255, 255, 255, 0.75);
        }
        footer a:hover {
            color: var(--f1-red);
        }
        footer .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            list-style: none;
            padding: 0;
            margin: 8px 0 0;
        }
        footer .friend-links li a {
            font-size: 0.9rem;
            padding: 4px 0;
            display: inline-block;
        }
        footer .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        footer .copyright strong {
            color: rgba(255, 255, 255, 0.8);
        }
        @media(max-width:768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 12px 16px;
                width: 100%;
            }
            .content h1 {
                font-size: 1.8rem;
            }
            .content h2 {
                font-size: 1.4rem;
            }
            .content h3 {
                font-size: 1.15rem;
            }
            .content p {
                font-size: 0.98rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .sidebar {
                position: static;
            }
        }
        @media(max-width:480px) {
            .container {
                padding: 0 14px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .content h1 {
                font-size: 1.5rem;
            }
            .interact-card form button {
                width: 100%;
            }
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .text-muted {
            color: #888;
            font-size: 0.9rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .gap-4 {
            gap: 4px;
        }
        .fw-700 {
            font-weight: 700;
        }
        .fw-600 {
            font-weight: 600;
        }
        .text-f1-red {
            color: var(--f1-red);
        }
        .bg-f1-light {
            background: var(--f1-light);
        }
        .rounded {
            border-radius: var(--radius);
        }
        .shadow-sm {
            box-shadow: var(--shadow);
        }
        .p-20 {
            padding: 20px;
        }
        .p-24 {
            padding: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .rating-stars-select {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 2px;
        }
        .rating-stars-select input {
            display: none;
        }
        .rating-stars-select label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars-select label:hover,
        .rating-stars-select label:hover~label,
        .rating-stars-select input:checked~label {
            color: #ffd700;
        }