:root {
            --f1-red: #e10600;
            --f1-black: #15151e;
            --f1-white: #ffffff;
            --f1-gray: #f8f9fa;
            --f1-dark-gray: #6c757d;
            --f1-accent: #00d2be;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: var(--f1-gray);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a { color: var(--f1-red); text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: var(--f1-accent); }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        header {
            background: var(--f1-black);
            color: var(--f1-white);
            padding: 1.2rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.4rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        .my-logo a { color: var(--f1-red); }
        .my-logo a:hover { color: var(--f1-white); }
        .desktop-nav { display: flex; gap: 1.8rem; }
        .desktop-nav a {
            padding: 0.6rem 1.2rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .desktop-nav a:hover {
            background: var(--f1-red);
            color: var(--f1-white);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--f1-white);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--f1-black);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            border-top: 2px solid var(--f1-red);
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav a {
            padding: 1rem;
            border-bottom: 1px solid var(--f1-dark-gray);
            font-weight: 600;
        }
        .mobile-nav a:hover { background: rgba(225, 6, 0, 0.2); }
        .breadcrumb {
            background: var(--f1-white);
            padding: 1rem 0;
            border-bottom: 1px solid #eee;
        }
        .breadcrumb ul {
            display: flex;
            gap: 0.5rem;
            font-size: 0.95rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: var(--f1-dark-gray);
        }
        main {
            padding: 2.5rem 0;
            background: var(--f1-white);
        }
        article {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        h1 {
            font-size: 3.2rem;
            color: var(--f1-red);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
        }
        h2 {
            font-size: 2.4rem;
            color: var(--f1-black);
            margin: 2.5rem 0 1.2rem;
            border-left: 5px solid var(--f1-red);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--f1-black);
            margin: 1.8rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--f1-dark-gray);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .update-time {
            font-style: italic;
            color: var(--f1-dark-gray);
            text-align: center;
            margin-bottom: 2.5rem;
            font-size: 1rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fff9e6, #ffeaa7);
            padding: 1.8rem;
            border-radius: 10px;
            border-left: 6px solid var(--f1-red);
            margin: 2rem 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .content-img {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
            margin: 2rem 0;
        }
        .link-list a {
            display: block;
            padding: 1rem;
            background: var(--f1-gray);
            border-radius: 8px;
            border: 1px solid #ddd;
            font-weight: 600;
        }
        .link-list a:hover {
            background: var(--f1-red);
            color: var(--f1-white);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(225, 6, 0, 0.2);
        }
        .function-section {
            background: var(--f1-gray);
            padding: 2.5rem;
            margin: 3rem 0;
            border-radius: 12px;
            border-top: 4px solid var(--f1-red);
        }
        .function-section h2 {
            text-align: center;
            border: none;
            padding: 0;
            margin-bottom: 1.8rem;
            color: var(--f1-black);
        }
        .function-section i { margin-right: 0.8rem; color: var(--f1-red); }
        form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            max-width: 600px;
            margin: 0 auto;
        }
        input, textarea, select {
            padding: 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
        }
        textarea { min-height: 150px; resize: vertical; }
        button {
            background: var(--f1-red);
            color: var(--f1-white);
            padding: 1rem 2rem;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover {
            background: var(--f1-accent);
            transform: scale(1.03);
            box-shadow: 0 5px 15px rgba(0, 210, 190, 0.3);
        }
        .rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: rtl;
        }
        .rating input { display: none; }
        .rating label {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label { color: #ffc107; }
        footer {
            background: var(--f1-black);
            color: var(--f1-white);
            padding: 3rem 0 2rem;
            text-align: center;
        }
        .friend-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        friend-link {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            background: rgba(255,255,255,0.1);
            border-radius: 6px;
        }
        friend-link a { color: var(--f1-white); font-weight: 600; }
        friend-link a:hover { color: var(--f1-accent); }
        .copyright {
            margin-top: 2rem;
            font-size: 0.9rem;
            color: var(--f1-dark-gray);
            border-top: 1px solid #444;
            padding-top: 1.5rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.7rem; }
            h2 { font-size: 2.1rem; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .link-list { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            article { padding: 0 1rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .function-section { padding: 1.8rem; }
            .header-inner { flex-wrap: wrap; }
        }
        @media (max-width: 480px) {
            .my-logo { font-size: 1.8rem; }
            .breadcrumb ul { flex-wrap: wrap; }
            .friend-links { flex-direction: column; gap: 1rem; }
        }