/* 全局变量 */
:root {
    --primary-color: #6c63ff;
    --secondary-color: #ff6584;
    --accent-color: #3ae374;
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --surface-color-light: #2a2a2a;
    --text-color: #ffffff;
    --text-color-secondary: #b3b3b3;
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --max-width: 1200px;
    --header-height: 80px;
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

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

/* 标题样式 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-color-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--text-color);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(108, 99, 255, 0.2);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(108, 99, 255, 0.2);
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--surface-color);
    border: 1px solid var(--surface-color-light);
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.2);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* 导航栏 */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
}

#header.scrolled {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    height: 70px;
}

#header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

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

.logo-icon {
    margin-right: 10px;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

nav {
    display: flex;
    align-items: center;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-size: 1rem;
    font-weight: 500;
    position: relative;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary-color);
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    width: 30px;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--text-color);
    margin: 3px 0;
    border-radius: 3px;
    transition: var(--transition);
}

/* 英雄区 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at top right, rgba(108, 99, 255, 0.1), transparent), 
                radial-gradient(circle at bottom left, rgba(255, 101, 132, 0.05), transparent);
    padding-top: var(--header-height);
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.hero-content {
    max-width: 600px;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.2;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-content h2 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-color-secondary);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-image img {
    border-radius: 20px;
    box-shadow: var(--shadow);
    transform: perspective(1000px) rotateY(-10deg);
    transition: var(--transition);
}

.hero-image img:hover {
    transform: perspective(1000px) rotateY(0);
}

.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: bounce 2s infinite;
}

.scroll-down svg {
    color: var(--text-color);
    opacity: 0.7;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

/* 特性板块 */
.features {
    background-color: var(--surface-color);
    border-radius: 20px;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: -300px;
    right: -300px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(rgba(108, 99, 255, 0.1), transparent);
    z-index: 0;
}

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

.feature-card {
    background-color: var(--surface-color-light);
    border-radius: var(--border-radius);
    padding: 30px;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.feature-icon {
    margin-bottom: 20px;
    color: var(--primary-color);
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(108, 99, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background-color: rgba(108, 99, 255, 0.2);
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-color-secondary);
    margin-bottom: 0;
}

/* 演示板块 */
.demo {
    position: relative;
    overflow: hidden;
}

.demo::after {
    content: '';
    position: absolute;
    bottom: -300px;
    left: -300px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(rgba(255, 101, 132, 0.1), transparent);
    z-index: 0;
}

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

/* 二维码演示样式 */
.qr-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 50px;
    box-shadow: var(--shadow);
    max-width: 1000px;
    margin: 0 auto;
}

.qr-code-container {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    transition: var(--transition);
}

.qr-code-container::after {
    content: '扫一扫';
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-color-secondary);
    font-size: 1rem;
    font-weight: 500;
}

.qr-code-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.qr-code-container img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.qr-description h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-color);
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.qr-description p {
    color: var(--text-color-secondary);
    margin-bottom: 25px;
    line-height: 1.7;
}

.qr-description ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 30px;
}

.qr-description ul li {
    display: flex;
    align-items: center;
    color: var(--text-color-secondary);
}

.qr-description ul li::before {
    content: '•';
    color: var(--accent-color);
    margin-right: 10px;
    font-size: 1.5rem;
}

.qr-link {
    margin-top: 20px;
}

@media (max-width: 992px) {
    .qr-demo {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 30px;
    }
    
    .qr-code-container {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .qr-description {
        text-align: center;
    }
    
    .qr-description ul {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .qr-description ul {
        grid-template-columns: 1fr;
    }
}

/* 原有的 demo-tabs 相关样式保留，但不再使用 */
.demo-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    gap: 20px;
}

.demo-tab {
    padding: 12px 25px;
    background-color: var(--surface-color);
    border: none;
    border-radius: 30px;
    color: var(--text-color-secondary);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.demo-tab.active,
.demo-tab:hover {
    background-color: var(--primary-color);
    color: var(--text-color);
}

.demo-panels {
    max-width: 1000px;
    margin: 0 auto;
}

.demo-panel {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.demo-panel.active {
    display: grid;
}

.demo-image {
    overflow: hidden;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.demo-image img {
    transition: var(--transition);
    width: 100%;
}

.demo-image:hover img {
    transform: scale(1.05);
}

.demo-description h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.demo-description p {
    color: var(--text-color-secondary);
    margin-bottom: 25px;
}

.demo-description ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.demo-description ul li {
    display: flex;
    align-items: center;
}

.demo-description ul li::before {
    content: '•';
    color: var(--accent-color);
    margin-right: 10px;
    font-size: 1.5rem;
}

/* 价格板块 */
.price {
    background-color: var(--surface-color);
    border-radius: 20px;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.price::before {
    content: '';
    position: absolute;
    top: -300px;
    right: -300px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(rgba(58, 227, 116, 0.1), transparent);
    z-index: 0;
}

.price-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.price-card {
    background-color: var(--surface-color-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.price-card.featured {
    border: 2px solid var(--primary-color);
    transform: translateY(-10px);
}

.price-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.price-card.featured:hover {
    transform: translateY(-15px);
}

.price-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--text-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.price-header {
    padding: 30px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.price-header h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.price-amount {
    margin-bottom: 15px;
}

.price-amount .currency {
    font-size: 1.5rem;
    opacity: 0.8;
    vertical-align: top;
}

.price-amount .amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-header p {
    color: var(--text-color-secondary);
}

.price-features {
    padding: 30px;
}

.price-features ul li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: var(--text-color-secondary);
}

.price-features ul li svg {
    margin-right: 10px;
    color: var(--accent-color);
    flex-shrink: 0;
}

.price-footer {
    padding: 0 30px 30px;
    text-align: center;
}

/* 联系我们 */
.contact {
    position: relative;
    overflow: hidden;
}

.contact::after {
    content: '';
    position: absolute;
    bottom: -300px;
    right: -300px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(rgba(108, 99, 255, 0.1), transparent);
    z-index: 0;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.contact-card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.contact-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: rgba(108, 99, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.contact-icon svg {
    color: var(--primary-color);
}

.contact-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.contact-card p {
    color: var(--text-color-secondary);
    margin-bottom: 20px;
}

.qr-code-placeholder {
    width: 150px;
    height: 150px;
    background-color: var(--surface-color-light);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto;
}

.contact-form-wrapper {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 40px;
}

.contact-form-wrapper h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.contact-form-wrapper p {
    color: var(--text-color-secondary);
    margin-bottom: 30px;
}

/* 页脚 */
footer {
    background-color: var(--surface-color);
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo .logo-icon {
    margin-bottom: 15px;
}

.footer-logo h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-link-group h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.footer-link-group ul li {
    margin-bottom: 10px;
}

.footer-link-group ul li a {
    color: var(--text-color-secondary);
    transition: var(--transition);
}

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

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

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

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

.footer-bottom a:hover {
    color: var(--primary-color);
}

/* 动画 */
.animate-text {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.5s forwards;
}

.delay-1 {
    animation-delay: 0.3s;
}

.delay-2 {
    animation-delay: 0.6s;
}

.delay-3 {
    animation-delay: 0.9s;
}

.animate-fade-in {
    opacity: 0;
    animation: fadeIn 1s forwards;
    animation-delay: 0.5s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        justify-content: center;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
        margin-bottom: 50px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .demo-panel {
        grid-template-columns: 1fr;
    }

    .demo-description {
        order: 2;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

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

    .footer-logo {
        align-items: center;
        text-align: center;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content h2 {
        font-size: 1.5rem;
    }

    nav ul {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100% - var(--header-height));
        background-color: var(--background-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 40px;
        transform: translateX(100%);
        transition: var(--transition);
        z-index: 999;
    }

    nav ul.active {
        transform: translateX(0);
    }

    nav ul li {
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .price-cards {
        grid-template-columns: 1fr;
    }

    .price-card.featured {
        transform: scale(1.05);
    }

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

@media (max-width: 576px) {
    section {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content h2 {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .features-grid,
    .demo-description ul {
        grid-template-columns: 1fr;
    }

    .demo-tabs {
        flex-direction: column;
        align-items: center;
    }

    .demo-tab {
        width: 100%;
        text-align: center;
    }

    .contact-card,
    .contact-form-wrapper {
        padding: 30px 20px;
    }
}