/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #eee;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand h1 {
    color: #ff6b35;
    font-size: 24px;
    margin: 0;
}

.nav-brand .tagline {
    font-size: 12px;
    color: #666;
    margin-left: 10px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #ff6b35;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: #ff6b35;
    transition: width 0.3s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    animation: fadeInUp 1s ease 0.4s both;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    margin: 0 10px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: #ff6b35;
    color: white;
}

.btn-primary:hover {
    background: #e55a2e;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
    transform: translateY(-3px);
}

.hero-animation {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-icon {
    position: absolute;
    color: rgba(255, 255, 255, 0.1);
    font-size: 60px;
    animation: float 6s ease-in-out infinite;
}

.floating-icon:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-icon:nth-child(2) {
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.floating-icon:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.about-text h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    line-height: 1.8;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-item i {
    font-size: 2.5rem;
    color: #ff6b35;
    margin-bottom: 20px;
}

.feature-item h4 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 15px;
}

.feature-item p {
    color: #666;
    margin: 0;
}

/* 成功案例 */
.cases {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #8B5FBF 100%);
    position: relative;
    overflow: hidden;
}

.cases::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 70%, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.cases .section-title,
.cases .section-subtitle {
    color: white;
    position: relative;
    z-index: 2;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 40px;
    margin-top: 60px;
    position: relative;
    z-index: 2;
}

.case-item {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
    transition: all 0.4s ease;
}

.case-item:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 1);
}

.case-image {
    position: relative;
    height: 280px;
    overflow: hidden;
    border-radius: 20px 20px 0 0;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    background: #f8f9fa;
    transition: all 0.4s ease;
    padding: 20px;
}

.case-item:hover .case-image img {
    transform: scale(1.1);
}

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(102, 126, 234, 0.8), rgba(118, 75, 162, 0.8));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.case-item:hover .case-overlay {
    opacity: 1;
}

.case-overlay h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.case-overlay p {
    font-size: 1rem;
    margin: 0;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 15px;
}

.case-description {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.8;
}

.case-stats {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.stat {
    text-align: center;
    flex: 1;
}

.stat strong {
    display: block;
    font-size: 1.8rem;
    color: #ff6b35;
    font-weight: 700;
}

.stat span {
    font-size: 0.9rem;
    color: #666;
}

/* 商家端下载 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.download .section-title,
.download .section-subtitle {
    color: white;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 60px;
}

.download-info h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 10px 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.feature-list i {
    color: #4CAF50;
    margin-right: 15px;
    font-size: 1.2rem;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.download-item {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

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

.download-item.coming-soon {
    opacity: 0.6;
}

.download-icon {
    font-size: 3rem;
    margin-right: 25px;
    color: #4CAF50;
}

.download-details h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.download-details p {
    margin-bottom: 20px;
    opacity: 0.8;
}

.btn-download {
    background: #4CAF50;
    color: white;
    padding: 12px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-download:hover {
    background: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

.btn-disabled {
    background: #666;
    color: #ccc;
    padding: 12px 25px;
    border-radius: 25px;
    border: none;
    font-weight: 600;
    cursor: not-allowed;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.contact-item {
    text-align: center;
    padding: 40px 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-10px);
}

.contact-item i {
    font-size: 2.5rem;
    color: #ff6b35;
    margin-bottom: 20px;
}

.contact-item h4 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 15px;
}

.contact-item p {
    color: #666;
    margin: 0;
    font-size: 1.1rem;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    color: #ff6b35;
    margin-bottom: 15px;
}

.footer-brand p {
    opacity: 0.8;
    margin: 0;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 20px;
    color: #ff6b35;
}

.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #ff6b35;
}

.footer-contact p {
    margin-bottom: 10px;
    opacity: 0.8;
}

.footer-contact i {
    margin-right: 10px;
    color: #ff6b35;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
    opacity: 0.8;
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .cases-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .case-item {
        max-width: 100%;
    }

    .download-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .case-stats {
        flex-direction: column;
        gap: 15px;
    }

    .features {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .btn {
        display: block;
        margin: 10px 0;
        text-align: center;
    }

    .floating-icon {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .case-image {
        height: 200px;
    }

    .download-item {
        flex-direction: column;
        text-align: center;
    }

    .download-icon {
        margin-right: 0;
        margin-bottom: 15px;
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #ff6b35;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #e55a2e;
}

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