* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0f172a;
            color: #e2e8f0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #38bdf8;
            transform: translateY(-2px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 60px 0;
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            border-bottom: 2px solid #334155;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(90deg, #fbbf24, #f472b6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 6px;
        }
        .nav-desktop a:hover {
            background-color: rgba(96, 165, 250, 0.15);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #e2e8f0;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1e293b;
            padding: 20px;
            border-top: 1px solid #334155;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 15px 0;
            border-bottom: 1px solid #334155;
            font-weight: 600;
        }
        .breadcrumb {
            padding: 15px 20px;
            background-color: #1e293b;
            font-size: 0.9rem;
            border-bottom: 1px solid #334155;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb span {
            color: #cbd5e1;
            margin: 0 8px;
        }
        .hero {
            text-align: center;
            padding: 80px 20px;
            background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.2), transparent 50%),
                        radial-gradient(circle at bottom left, rgba(251, 191, 36, 0.15), transparent 50%);
        }
        h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.5rem;
            }
        }
        .hero-subtitle {
            font-size: 1.3rem;
            color: #94a3b8;
            max-width: 800px;
            margin: 0 auto 30px;
        }
        main {
            background-color: #1e293b;
            border-radius: 12px;
            margin: 30px auto;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
        }
        @media (max-width: 768px) {
            main {
                padding: 25px;
                margin: 20px auto;
            }
        }
        h2 {
            font-size: 2.2rem;
            margin: 50px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #475569;
            color: #f1f5f9;
        }
        h3 {
            font-size: 1.8rem;
            margin: 40px 0 15px;
            color: #cbd5e1;
        }
        h4 {
            font-size: 1.4rem;
            margin: 30px 0 12px;
            color: #e2e8f0;
        }
        p {
            margin-bottom: 24px;
            font-size: 1.1rem;
            color: #cbd5e1;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(96, 165, 250, 0.2), rgba(167, 139, 250, 0.2));
            padding: 25px;
            border-left: 5px solid #60a5fa;
            border-radius: 8px;
            margin: 30px 0;
        }
        .highlight p {
            margin-bottom: 0;
            font-size: 1.2rem;
            color: #f8fafc;
        }
        .image-wrapper {
            margin: 40px auto;
            text-align: center;
            max-width: 900px;
        }
        .image-caption {
            font-style: italic;
            color: #94a3b8;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 60px 0;
        }
        .feature-box {
            background: #0f172a;
            border: 1px solid #334155;
            border-radius: 10px;
            padding: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-box:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
        }
        .feature-box h3 {
            margin-top: 0;
            color: #fbbf24;
        }
        .feature-box form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 20px;
        }
        .feature-box input,
        .feature-box textarea,
        .feature-box select {
            padding: 12px 15px;
            background-color: #1e293b;
            border: 1px solid #475569;
            border-radius: 6px;
            color: #f1f5f9;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .feature-box input:focus,
        .feature-box textarea:focus,
        .feature-box select:focus {
            outline: none;
            border-color: #60a5fa;
        }
        .feature-box button {
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .feature-box button:hover {
            background: linear-gradient(90deg, #2563eb, #7c3aed);
            transform: scale(1.03);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 15px 0;
            font-size: 1.8rem;
            color: #475569;
        }
        .star-rating .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #fbbf24;
        }
        .related-links {
            background-color: #0f172a;
            padding: 30px;
            border-radius: 10px;
            margin: 50px 0;
        }
        .related-links h3 {
            color: #38bdf8;
        }
        .related-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }
        .related-links li {
            padding: 12px 20px;
            background-color: #1e293b;
            border-radius: 6px;
            transition: background-color 0.3s;
        }
        .related-links li:hover {
            background-color: #334155;
        }
        .site-footer {
            background-color: #0f172a;
            border-top: 2px solid #334155;
            padding: 50px 0 30px;
            margin-top: 80px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            padding: 8px 0;
            border-bottom: 1px dashed #475569;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        .update-time {
            color: #fbbf24;
            font-weight: bold;
            margin: 20px 0;
            font-size: 1.1rem;
        }
        @media (max-width: 992px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
            h2 {
                font-size: 1.9rem;
            }
            h3 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 576px) {
            .header-container,
            .breadcrumb,
            main {
                padding-left: 15px;
                padding-right: 15px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .hero {
                padding: 50px 15px;
            }
        }