* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2a2d43;
            --secondary: #4a5079;
            --accent: #ff6b9d;
            --accent-light: #ff9ec0;
            --highlight: #00d9ff;
            --light: #f0f2f9;
            --dark: #1a1c2e;
            --text: #333344;
            --text-light: #666677;
            --gray: #a1a4bb;
            --success: #4cd964;
            --warning: #ffcc00;
            --danger: #ff3b30;
            --radius: 12px;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #0f111a 0%, var(--primary) 100%);
            color: var(--light);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--highlight);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-shadow: 0 0 8px rgba(255, 107, 157, 0.5);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 60px 0;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            color: white;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(255, 107, 157, 0.4);
        }
        .btn-secondary {
            background: linear-gradient(90deg, var(--secondary), #5a5f8c);
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            position: relative;
        }
        .section-title h2 {
            font-size: 2.8rem;
            background: linear-gradient(90deg, var(--highlight), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            position: relative;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 5px;
            background: var(--accent);
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 5px;
        }
        header {
            background-color: rgba(26, 28, 46, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ff6b9d, #00d9ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            font-size: 2rem;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 30px;
        }
        .nav-links a {
            color: var(--light);
            font-weight: 600;
            font-size: 1rem;
            padding: 8px 0;
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--accent);
            left: 0;
            bottom: 0;
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
            color: var(--light);
        }
        .breadcrumb {
            padding: 20px 0 10px;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--highlight);
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        .hero {
            padding: 100px 0;
            text-align: center;
            background: radial-gradient(circle at 30% 30%, rgba(74, 80, 121, 0.3) 0%, transparent 50%);
        }
        .hero h1 {
            font-size: 4rem;
            line-height: 1.2;
            margin-bottom: 25px;
            background: linear-gradient(90deg, #fff, var(--highlight));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 5px 15px rgba(0, 217, 255, 0.2);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 40px;
            color: #c2c4d6;
        }
        .content-area {
            background-color: rgba(26, 28, 46, 0.7);
            border-radius: var(--radius);
            padding: 50px;
            margin-bottom: 40px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }
        .content-area h2 {
            font-size: 2.5rem;
            margin: 40px 0 20px;
            color: var(--highlight);
            border-left: 5px solid var(--accent);
            padding-left: 20px;
        }
        .content-area h3 {
            font-size: 1.8rem;
            margin: 30px 0 15px;
            color: var(--accent-light);
        }
        .content-area h4 {
            font-size: 1.4rem;
            margin: 25px 0 12px;
            color: #ffcc00;
        }
        .content-area p {
            margin-bottom: 25px;
            font-size: 1.15rem;
            color: #d1d3e0;
            line-height: 1.8;
        }
        .content-area strong {
            color: #fff;
            font-weight: 700;
        }
        .content-area em {
            color: #a1e6ff;
            font-style: italic;
        }
        .content-area blockquote {
            border-left: 4px solid var(--accent);
            padding-left: 25px;
            margin: 30px 0;
            font-style: italic;
            color: #b8bbd1;
            background: rgba(255, 107, 157, 0.05);
            padding: 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .content-area ul, .content-area ol {
            margin: 20px 0 20px 30px;
        }
        .content-area li {
            margin-bottom: 10px;
            color: #d1d3e0;
        }
        .highlight-box {
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 107, 157, 0.1));
            border: 1px solid rgba(0, 217, 255, 0.2);
            border-radius: var(--radius);
            padding: 25px;
            margin: 30px 0;
        }
        .img-container {
            margin: 35px 0;
            text-align: center;
        }
        .img-container img {
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
            transition: var(--transition);
            border: 3px solid transparent;
            background: linear-gradient(var(--primary), var(--primary)) padding-box,
                        linear-gradient(135deg, var(--accent), var(--highlight)) border-box;
        }
        .img-container img:hover {
            transform: scale(1.02);
        }
        .img-caption {
            font-size: 0.95rem;
            color: var(--gray);
            margin-top: 10px;
            font-style: italic;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 60px 0;
        }
        .feature-card {
            background: rgba(42, 45, 67, 0.8);
            border-radius: var(--radius);
            padding: 30px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            border-color: var(--accent);
            box-shadow: 0 15px 35px rgba(255, 107, 157, 0.15);
        }
        .feature-card h3 {
            color: var(--highlight);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }
        .feature-card h3 i {
            margin-right: 10px;
            font-size: 1.5rem;
        }
        .feature-card form {
            display: flex;
            flex-direction: column;
        }
        .feature-card input, .feature-card textarea, .feature-card select {
            background: rgba(26, 28, 46, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 15px;
            margin-bottom: 20px;
            color: var(--light);
            font-size: 1rem;
            transition: var(--transition);
        }
        .feature-card input:focus, .feature-card textarea:focus, .feature-card select:focus {
            outline: none;
            border-color: var(--highlight);
            box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.2);
        }
        .feature-card textarea {
            min-height: 150px;
            resize: vertical;
        }
        .rating {
            display: flex;
            justify-content: center;
            margin: 15px 0;
            direction: rtl;
        }
        .rating input {
            display: none;
        }
        .rating label {
            cursor: pointer;
            color: var(--gray);
            font-size: 2.5rem;
            transition: var(--transition);
            margin: 0 5px;
        }
        .rating label:hover,
        .rating label:hover ~ label,
        .rating input:checked ~ label {
            color: var(--warning);
        }
        footer {
            background-color: var(--dark);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ff6b9d, #00d9ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
            display: block;
        }
        .footer-links h4 {
            color: var(--highlight);
            margin-bottom: 25px;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: var(--gray);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.03);
            padding: 15px;
            border-radius: var(--radius);
            margin-bottom: 15px;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 107, 157, 0.1);
            border-left: 4px solid var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--gray);
            font-size: 0.9rem;
        }
        .update-time {
            color: var(--success);
            font-weight: bold;
        }
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 3.2rem;
            }
            .content-area {
                padding: 35px;
            }
            .content-area h2 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                right: -100%;
                width: 80%;
                max-width: 300px;
                height: calc(100vh - 80px);
                background: var(--dark);
                flex-direction: column;
                align-items: center;
                padding-top: 50px;
                transition: 0.5s;
                box-shadow: -5px 0 15px rgba(0,0,0,0.2);
                border-left: 1px solid rgba(255,255,255,0.05);
            }
            .nav-links.active {
                right: 0;
            }
            .nav-links li {
                margin: 0 0 30px 0;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .section-title h2 {
                font-size: 2.2rem;
            }
            .content-area {
                padding: 25px;
            }
            .content-area h2 {
                font-size: 1.9rem;
            }
            .content-area h3 {
                font-size: 1.6rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .section-title h2 {
                font-size: 1.8rem;
            }
            .btn {
                padding: 12px 25px;
            }
        }