/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根变量定义 */
:root {
    --primary-color: #00e676;
    --secondary-color: #1e88e5;
    --accent-color: #ff6b35;
    --background-dark: #0a0a0a;
    --background-darker: #000000;
    --background-light: #1a1a1a;
    --surface-color: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-accent: #00e676;
    --gradient-primary: linear-gradient(135deg, #00e676 0%, #1e88e5 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
    --shadow-light: 0 4px 20px rgba(0, 230, 118, 0.1);
    --shadow-strong: 0 8px 40px rgba(0, 230, 118, 0.2);
    --border-radius: 12px;
    --border-radius-large: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础样式 */
body {
    font-family: 'Inter', sans-serif;
    background: var(--background-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Logo 区域 */
.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 20px 0 20px;
}

.main-logo {
    width: 160px;
    height: auto;
    max-height: 60px;
}

/* 客服图标 */
.customer-service {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.service-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    color: var(--background-dark);
    text-decoration: none;
    font-size: 1.5rem;
    box-shadow: var(--shadow-strong);
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.service-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 40px rgba(0, 230, 118, 0.4);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(0, 230, 118, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 230, 118, 0); }
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    gap: 0.5rem;
}

.nav-logo img {
    width: 130px;
    height: 50px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* 主要展示区域 */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
    padding: 0 0 80px 0;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    flex: 1;
}

.hero-content {
    z-index: 2;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--background-dark);
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-strong);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    background: rgba(0, 230, 118, 0.1);
}

.hero-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 手机图片 */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-mobile-image {
    max-width: 100%;
    height: auto;
    width: 300px;
    animation: float 6s ease-in-out infinite;
    filter: drop-shadow(0 20px 50px rgba(0, 230, 118, 0.2));
    transition: var(--transition);
    cursor: pointer;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* 浮动元素 */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.floating-icon {
    position: absolute;
    color: var(--primary-color);
    font-size: 2rem;
    opacity: 0.1;
    animation: floatIcon 8s ease-in-out infinite;
}

.floating-icon:nth-child(1) { animation-delay: 0s; }
.floating-icon:nth-child(2) { animation-delay: 2s; }
.floating-icon:nth-child(3) { animation-delay: 4s; }

@keyframes floatIcon {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* 功能特性区域 */
.features {
    padding: 100px 0;
    background: var(--background-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--surface-color);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(30, 30, 30, 0.8);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-light);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--background-dark);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 应用截图区域 */
.screenshots {
    padding: 100px 0;
    background: var(--background-dark);
}

.screenshots-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.screenshot-item {
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--surface-color);
    aspect-ratio: 9/16;
    position: relative;
}

.screenshot-placeholder {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2a2a2a, #1a1a1a);
    color: var(--text-secondary);
    gap: 1rem;
}

.screenshot-placeholder i {
    font-size: 3rem;
    color: var(--primary-color);
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background: var(--gradient-dark);
}

.download-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.download-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.download-text p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--surface-color);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    min-width: 200px;
}

.download-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-light);
}

.download-btn i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.btn-text-small {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.btn-text-large {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
}

.download-info {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.info-item i {
    color: var(--primary-color);
}

.download-qr {
    display: flex;
    justify-content: center;
}

.qr-code {
    text-align: center;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    background: var(--surface-color);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.qr-placeholder i {
    font-size: 4rem;
    color: var(--primary-color);
}

/* 用户评价区域 */
.testimonials {
    padding: 100px 0;
    background: var(--background-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stars {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.stars i {
    color: #ffd700;
}

.testimonial-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--background-dark);
    font-size: 1.2rem;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
}

.user-role {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 页脚样式 */
.footer {
    background: var(--background-darker);
    padding: 80px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo img {
    width: 130px;
    height: 50px;
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--surface-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    color: var(--background-dark);
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.contact-item i {
    color: var(--primary-color);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
        padding: 30px 20px 0 20px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }

    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .download-buttons {
        justify-content: center;
    }
    
    .download-info {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshots-carousel {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 0 0 60px 0;
    }
    
    .hero-container {
        padding: 20px 20px 0 20px;
    }
    
    .logo-container {
        padding: 15px 20px 0 20px;
    }
    
    .main-logo {
        width: 120px;
        max-height: 45px;
    }
    
    .customer-service {
        bottom: 20px;
        right: 20px;
    }
    
    .service-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .feature-card {
        padding: 2rem;
    }
    
    .screenshots-carousel {
        grid-template-columns: 1fr;
    }
    
    .download-btn {
        min-width: auto;
        flex: 1;
    }
    
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选择文本样式 */
::selection {
    background: var(--primary-color);
    color: var(--background-dark);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.testimonial-card,
.screenshot-item {
    animation: fadeInUp 0.6s ease-out;
}

/* 鼠标悬停效果 */
.download-btn:hover .btn-text-large {
    color: var(--primary-color);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-light);
}