* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-blue: #0A2E6D;
            --accent-red: #D50032;
            --light-gray: #F5F7FA;
            --medium-gray: #E1E5EB;
            --dark-gray: #333;
            --text-color: #222;
            --white: #FFFFFF;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        body {
            background-color: var(--light-gray);
            color: var(--text-color);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-red);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--primary-blue);
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
        }
        .my-logo i {
            color: var(--accent-red);
            margin-right: 10px;
        }
        .my-logo:hover {
            text-decoration: none;
            transform: scale(1.02);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        .nav-desktop a {
            font-weight: 600;
            font-size: 1.1rem;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--primary-blue);
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--white);
            padding: 20px;
            border-top: 2px solid var(--medium-gray);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 12px 0;
            border-bottom: 1px solid var(--medium-gray);
            font-weight: 600;
        }
        .breadcrumb {
            background-color: var(--medium-gray);
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--dark-gray);
        }
        .breadcrumb span {
            color: var(--accent-red);
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background-color: var(--white);
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        h1 {
            color: var(--primary-blue);
            font-size: 2.8rem;
            margin-bottom: 25px;
            border-bottom: 4px solid var(--accent-red);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--primary-blue);
            font-size: 2rem;
            margin: 35px 0 20px;
            padding-left: 10px;
            border-left: 5px solid var(--accent-red);
        }
        h3 {
            color: var(--dark-gray);
            font-size: 1.6rem;
            margin: 25px 0 15px;
        }
        h4 {
            color: var(--dark-gray);
            font-size: 1.3rem;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary-blue);
            background-color: #f0f8ff;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 25px;
            border-left: 5px solid #ffcc00;
            margin: 25px 0;
        }
        .highlight p {
            margin-bottom: 10px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .bold-text {
            font-weight: 800;
            color: var(--accent-red);
        }
        .image-container {
            text-align: center;
            margin: 30px 0;
        }
        .feature-img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
        }
        .caption {
            font-style: italic;
            color: var(--dark-gray);
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .link-list {
            background-color: var(--light-gray);
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
        }
        .link-list ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            list-style: none;
        }
        .link-list li {
            padding: 10px;
            background-color: var(--white);
            border-radius: 8px;
            transition: var(--transition);
        }
        .link-list li:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .form-section {
            background-color: var(--light-gray);
            padding: 30px;
            border-radius: 12px;
            margin: 40px 0;
        }
        .form-title {
            color: var(--primary-blue);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--dark-gray);
        }
        input, textarea, select {
            padding: 14px;
            border: 2px solid var(--medium-gray);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-blue);
        }
        button {
            background-color: var(--accent-red);
            color: var(--white);
            border: none;
            padding: 16px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        button:hover {
            background-color: var(--primary-blue);
            transform: translateY(-3px);
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .star {
            font-size: 2rem;
            color: var(--medium-gray);
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #FFD700;
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: var(--dark-gray);
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px dashed var(--medium-gray);
        }
        footer {
            background-color: var(--primary-blue);
            color: var(--white);
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: var(--white);
            border-left: 5px solid var(--accent-red);
            padding-left: 15px;
            margin-bottom: 20px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.1);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 10px;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateX(5px);
        }
        friend-link a {
            color: var(--white);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.2);
            font-size: 0.9rem;
            color: #ccc;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 25px;
            }
            .link-list ul {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }