:root {
    --primary-color: #6200ea;
    --secondary-color: #03dac6;
    --background-color: #121212;
    --text-color: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.05);
    --hover-color: #7c4dff;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4 {
    margin-bottom: 0.8rem;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
}

h3 {
    font-size: 1.5rem;
}

/* Navigation */
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

nav {
    background: rgba(0, 0, 0, 0.8);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-links {
    display: flex;
    gap: 2rem;
    margin-left: auto;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

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

.cta-button {
    background: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    transition: background 0.3s ease;
}

.cta-button:hover {
    background: var(--hover-color);
}

/* Hero Section */
#hero {
    min-height: 40vh;
    padding: 4rem 1rem 2rem;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    position: relative;
    overflow: hidden;
}

#hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.8rem;
}

#hero p {
    max-width: 600px;
    margin: 0 auto 1rem;
    font-size: 1rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 1.5rem 0;
}

.stat {
    text-align: center;
}

.number {
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.hero-cta {
    margin-top: 1.5rem;
}

.cta-button-large {
    display: inline-block;
    background: var(--primary-color);
    color: var(--text-color);
    text-decoration: none;
    padding: 0.8rem 2rem;
    border-radius: 25px;
    font-weight: 600;
    transition: background 0.3s ease;
}

.cta-button-large:hover {
    background: var(--hover-color);
}

/* Features Section */
.feature-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

/* How-to Section */
.steps-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.step {
    position: relative;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 15px;
}

.step-number {
    position: absolute;
    top: -20px;
    left: -20px;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
}

details {
    text-align: left;
}

summary {
    cursor: pointer;
    font-weight: 600;
    padding: 0.8rem;
}

details p {
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 4px;
}

/* Footer */
footer {
    background: #0a0a0a;
    padding: 2rem 1rem 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    text-align: center;
}

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

.footer-section a {
    color: var(--text-color);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 1;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 0.8rem;
    }

    .section-content {
        padding: 0 0.8rem;
    }

    .hero-stats {
        flex-direction: column;
        align-items: center;
    }

    .feature-grid,
    .steps-container,
    .use-cases-grid,
    .tech-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
        padding: 0.8rem;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-color);
    position: relative;
}

.mobile-menu-btn span::before,
.mobile-menu-btn span::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--text-color);
    transition: transform 0.3s ease;
}

.mobile-menu-btn span::before {
    transform: translateY(-8px);
}

.mobile-menu-btn span::after {
    transform: translateY(8px);
}

/* 新增样式 */
.intro-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
    text-align: center;
}

.intro-content p {
    margin-bottom: 1rem;
}

.tech-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.tech-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
    text-align: center;
}

.use-cases-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.use-case {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
    text-align: center;
}

.use-case:hover {
    transform: translateY(-5px);
}

/* Benefits Section */
.benefits-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.benefit-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
    text-align: center;
}

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

.benefit-list li {
    margin: 1rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.benefit-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

/* Enhance existing footer styles */
.footer-section h4 {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    width: 100%;
}

/* Section Spacing */
section {
    padding: 3rem 0;
    text-align: center;
}

/* Content Alignment */
.section-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Grid Layouts */
.feature-grid,
.steps-container,
.use-cases-grid,
.tech-grid,
.benefits-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

/* Card Styles */
.feature-card,
.step,
.use-case,
.tech-card,
.benefit-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
    text-align: center;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
}

details {
    text-align: left;
}

/* Intro Content */
.intro-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
    text-align: center;
}

/* Footer Content */
.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    text-align: center;
}

/* Hero Section */
#hero {
    min-height: 40vh;
    padding: 4rem 1rem 2rem;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

/* Stats Layout */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 1.5rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 0.8rem;
    }

    .section-content {
        padding: 0 0.8rem;
    }

    .hero-stats {
        flex-direction: column;
        align-items: center;
    }

    .feature-grid,
    .steps-container,
    .use-cases-grid,
    .tech-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
        padding: 0.8rem;
    }
}

#demo {
    padding: 4rem 0;
    background-color: #f5f5f5;
}

.demo-container {
    margin: 2rem 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.demo-container iframe {
    display: block;
    width: 100%;
    border: none;
}