/* 全局变量与重置 */
        :root {
            --primary: #0F6BFF;
            --primary-dark: #0B5AD9;
            --secondary: #00C4FF;
            --dark: #1A1D2C;
            --dark-light: #2A2E42;
            --gray: #6C757D;
            --light: #F8F9FA;
            --white: #FFFFFF;
            --success: #28A745;
            --warning: #FFC107;
            --danger: #DC3545;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Poppins', 'Microsoft YaHei', sans-serif;
            color: var(--dark);
            background-color: var(--light);
            line-height: 1.7;
            overflow-x: hidden;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            line-height: 1.3;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            width: 100%;
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: 100px 0;
            position: relative;
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title h2:after {
            content: '';
            position: absolute;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }

        .section-title p {
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto;
            font-size: 1.1rem;
        }

        .btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-size: 14px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            outline: none;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: var(--white);
            box-shadow: 0 5px 15px rgba(15, 107, 255, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(15, 107, 255, 0.4);
        }

        .btn-outline {
            border: 2px solid var(--white);
            color: var(--white);
            background: transparent;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }

        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }

        .navbar.scrolled {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 5px 30px rgba(0, 0, 0, 0.15);
            padding: 10px 0;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            transition: var(--transition);
        }

        .logo {
            display: flex;
            align-items: center;
        }

        .logo img {
            height: 40px;
            margin-right: 10px;
        }

        .logo-text {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--dark);
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text span {
            font-size: 0.7rem;
            color: var(--gray);
            font-weight: 400;
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            list-style: none;
            align-items: center;
        }

        .nav-links li {
            margin-left: 25px;
            position: relative;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 15px;
            color: var(--dark);
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

        .nav-links a i {
            margin-left: 5px;
            font-size: 12px;
            transition: var(--transition);
        }

        .nav-links li:hover a {
            color: var(--primary);
        }

        .nav-links li:hover a i {
            transform: rotate(180deg);
        }

        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            width: 220px;
            background: var(--white);
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 15px 0;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            transform: translateY(10px);
            z-index: 100;
        }

        .nav-links li:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-menu li {
            margin: 0;
            padding: 0 15px;
        }

        .dropdown-menu a {
            padding: 10px 0;
            color: var(--dark);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            display: block;
        }

        .dropdown-menu a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .nav-cta {
            margin-left: 30px;
        }

        .mobile-menu-btn {
            display: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--dark);
        }

        /* 英雄区域 */
        .hero {
            padding: 180px 0 120px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            position: relative;
            overflow: hidden;
            margin-top: 80px;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('../images/photo-1639762681057-408e52192e55.avif') no-repeat center center/cover;
            opacity: 0.1;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .hero-text {
            flex: 1;
            padding-right: 50px;
        }

        .hero-image {
            flex: 1;
            position: relative;
            animation: float 6s ease-in-out infinite;
        }

        .hero-image img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 30px 50px rgba(0, 0, 0, 0.2);
        }

        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            opacity: 0.9;
            max-width: 600px;
        }

        .hero-badges {
            display: flex;
            align-items: center;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 15px;
        }

        .badge {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.1);
            padding: 8px 15px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
        }

        .badge i {
            margin-right: 8px;
            font-size: 16px;
        }

        .cta-buttons {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        /* 动画效果 */
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
            100% { transform: translateY(0px); }
        }

        /* 合作伙伴 */
        .partners {
            background: linear-gradient(135deg, rgba(15, 107, 255, 0.9), rgba(0, 196, 255, 0.9));
        }

        .partner-logos {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 40px;
        }

        .partner-logo {
            max-width: 160px;
            filter: grayscale(100%);
            opacity: 0.6;
            transition: var(--transition);
        }

        .partner-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }

        /* 特性区域 */
        .features {
            background: url('../images/photo-1451187580459-43490279c0fa.avif') no-repeat center center/cover;
            position: relative;
            color: var(--white);
        }

        .features::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(15, 107, 255, 0.9), rgba(0, 196, 255, 0.9));
        }

        .features-content {
            position: relative;
            z-index: 1;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 40px 30px;
            border-radius: 10px;
            text-align: center;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 25px;
            background: rgba(255, 255, 255, 0.2);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--white);
            color: var(--primary);
            transform: rotateY(180deg);
        }

        .feature-card h3 {
            margin-bottom: 15px;
            font-size: 1.5rem;
        }

        .feature-card p {
            opacity: 0.9;
            font-size: 0.95rem;
        }

        /* 推广计划 */
        .plans {
            background: var(--light);
        }

        .plans-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .plan-card {
            background: var(--white);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
        }

        .plan-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .plan-header {
            padding: 30px;
            text-align: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--white);
            position: relative;
        }

        .plan-header h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }

        .plan-price {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .plan-price span {
            font-size: 1rem;
            font-weight: 400;
        }

        .plan-period {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        .plan-body {
            padding: 30px;
        }

        .plan-features {
            list-style: none;
            margin-bottom: 30px;
        }

        .plan-features li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            align-items: center;
        }

        .plan-features li i {
            color: var(--success);
            margin-right: 10px;
            font-size: 14px;
        }

        .plan-recommended {
            position: absolute;
            top: 15px;
            right: -40px;
            background: var(--warning);
            color: var(--dark);
            padding: 5px 40px;
            font-size: 12px;
            font-weight: 600;
            transform: rotate(45deg);
        }

        /* 收益计算器 */
        .calculator {
            background: var(--white);
        }

        .calculator-container {
            display: flex;
            align-items: center;
            background: var(--light);
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .calculator-form {
            flex: 1;
            padding: 50px;
        }

        .calculator-image {
            flex: 1;
            height: 100%;
        }

        .calculator-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 16px;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 107, 255, 0.2);
            outline: none;
        }

        .range-slider {
            width: 100%;
            margin: 15px 0;
        }

        .range-values {
            display: flex;
            justify-content: space-between;
            margin-top: 5px;
            font-size: 14px;
            color: var(--gray);
        }

        .calculator-result {
            background: var(--primary);
            color: var(--white);
            padding: 20px;
            border-radius: 8px;
            margin-top: 30px;
            text-align: center;
        }

        .result-value {
            font-size: 2rem;
            font-weight: 700;
            margin: 10px 0;
        }

        /* 成功案例 */
        .testimonials {
            background: linear-gradient(rgba(26, 29, 44, 0.9), rgba(26, 29, 44, 0.9)), url('../images/photo-1522071820081-009f0129c71c.avif') no-repeat center center/cover;
            color: var(--white);
            background-attachment: fixed;
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .testimonial-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 30px;
            border-radius: 10px;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .testimonial-card:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-5px);
        }

        .testimonial-content {
            margin-bottom: 20px;
            font-style: italic;
            position: relative;
        }

        .testimonial-content:before,
        .testimonial-content:after {
            content: '"';
            font-size: 50px;
            color: rgba(255, 255, 255, 0.2);
            position: absolute;
        }

        .testimonial-content:before {
            top: -20px;
            left: -10px;
        }

        .testimonial-content:after {
            bottom: -40px;
            right: -10px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
        }

        .author-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            overflow: hidden;
            margin-right: 15px;
        }

        .author-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .author-info h4 {
            margin-bottom: 5px;
        }

        .author-info p {
            font-size: 14px;
            opacity: 0.8;
        }

        /* 常见问题 */
        .faq {
            background: var(--light);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            margin-bottom: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .faq-question {
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            transition: var(--transition);
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.active .faq-question {
            background: var(--primary);
            color: var(--white);
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-item.active .faq-answer {
            padding: 20px;
            max-height: 500px;
        }

        /* 页脚 */
        .footer {
            background: var(--dark);
            color: var(--white);
            padding: 80px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-column h3 {
            font-size: 1.2rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-column h3:after {
            content: '';
            position: absolute;
            width: 40px;
            height: 3px;
            background: var(--primary);
            bottom: 0;
            left: 0;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--transition);
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--white);
            transform: translateX(5px);
        }

        .footer-contact p {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .footer-contact i {
            margin-right: 10px;
            color: var(--primary);
            width: 20px;
            text-align: center;
        }

        .footer-social {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            transform: translateY(-5px);
        }

        .footer-newsletter p {
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.7);
        }

        .newsletter-form {
            display: flex;
        }

        .newsletter-form input {
            flex: 1;
            padding: 12px 15px;
            border: none;
            outline: none;
            border-radius: 30px 0 0 30px;
            font-size: 14px;
        }

        .newsletter-form button {
            background: var(--primary);
            color: var(--white);
            border: none;
            padding: 0 20px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            transition: var(--transition);
        }

        .newsletter-form button:hover {
            background: var(--primary-dark);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
        }

        /* 响应式设计 */
        @media (max-width: 1200px) {
            .hero h1 {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 992px) {
            .section {
                padding: 80px 0;
            }
            
            .hero {
                padding: 150px 0 80px;
            }
            
            .hero-content {
                flex-direction: column;
                text-align: center;
            }
            
            .hero-text {
                padding-right: 0;
                margin-bottom: 50px;
            }
            
            .hero-badges {
                justify-content: center;
            }
            
            .cta-buttons {
                justify-content: center;
            }
            
            .calculator-container {
                flex-direction: column;
            }
            
            .calculator-form {
                order: 2;
                padding: 30px;
            }
            
            .calculator-image {
                order: 1;
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 80px);
                background: var(--white);
                flex-direction: column;
                align-items: flex-start;
                justify-content: flex-start;
                padding: 40px 30px;
                transition: var(--transition);
                box-shadow: 5px 0 30px rgba(0, 0, 0, 0.1);
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .nav-links li {
                margin: 0 0 20px 0;
                width: 100%;
            }
            
            .nav-links a {
                padding: 10px 0;
                width: 100%;
            }
            
            .dropdown-menu {
                position: static;
                width: 100%;
                box-shadow: none;
                opacity: 1;
                visibility: visible;
                transform: none;
                padding: 10px 0 0 15px;
                background: transparent;
                display: none;
            }
            
            .nav-links li:hover .dropdown-menu {
                display: block;
            }
            
            .dropdown-menu li {
                padding: 0;
            }
            
            .dropdown-menu a {
                padding: 8px 0;
                color: var(--gray);
            }
            
            .nav-cta {
                margin: 20px 0 0 0;
                width: 100%;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero h1 {
                font-size: 2.2rem;
            }
            
            .hero p {
                font-size: 1rem;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .partner-logos {
                gap: 20px;
            }
            
            .partner-logo {
                max-width: 120px;
            }
        }

        @media (max-width: 576px) {
            .section {
                padding: 60px 0;
            }
            
            .hero {
                padding: 120px 0 60px;
                margin-top: 70px;
            }
            
            .cta-buttons {
                flex-direction: column;
                gap: 15px;
            }
            
            .btn {
                width: 100%;
            }
            
            .plans-grid {
                grid-template-columns: 1fr;
            }
            
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }