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

:root {
    --color-dark: #1a1a1a;
    --color-gray: #2d2d2d;
    --color-light: #f5f5f0;
    --color-accent: #d4af37;
    --color-text: #333;
    --color-text-light: #666;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--color-text);
    background: var(--color-light);
    line-height: 1.6;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(245, 245, 240, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-dark);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s;
}

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

/* 首屏 */
.hero {
    margin-top: 80px;
    padding: 8rem 3rem 6rem;
    background: var(--color-light);
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-dark);
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.15rem;
    color: var(--color-text-light);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2.5rem;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.btn-primary {
    background: var(--color-dark);
    color: white;
}

.btn-primary:hover {
    background: var(--color-gray);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-dark);
    border: 1.5px solid var(--color-dark);
}

.btn-secondary:hover {
    background: var(--color-dark);
    color: white;
}

.hero-visual {
    display: flex;
    justify-content: flex-end;
}

.phone-mockup {
    width: 320px;
    height: 650px;
    background: linear-gradient(135deg, var(--color-gray) 0%, var(--color-dark) 100%);
    border-radius: 40px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

/* 简介区域 */
.intro {
    padding: 6rem 3rem;
    background: white;
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.intro-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 2rem;
    line-height: 1.2;
}

.intro-text {
    font-size: 1.1rem;
    color: var(--color-text-light);
    line-height: 1.9;
    text-align: left;
}

/* 功能特性 */
.features {
    padding: 8rem 3rem;
    background: white;
}

.section-header {
    max-width: 1400px;
    margin: 0 auto 5rem;
}

.label {
    display: inline-block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 1rem;
    font-weight: 600;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.2;
}

.feature-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.feature-card {
    padding: 3rem 2rem;
    background: var(--color-light);
    border-radius: 8px;
    transition: transform 0.3s;
}

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

.feature-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 1.5rem;
    color: var(--color-dark);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

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

.feature-card p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* 微信集成 */
.wechat-integration {
    padding: 8rem 3rem;
    background: var(--color-dark);
    color: white;
}

.integration-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8rem;
    align-items: center;
}

.integration-info h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 3rem;
    line-height: 1.2;
}

.integration-list {
    list-style: none;
}

.integration-list li {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    align-items: flex-start;
}

.check-icon {
    width: 28px;
    height: 28px;
    background: var(--color-accent);
    color: var(--color-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: 700;
}

.integration-list strong {
    display: block;
    font-size: 1.15rem;
    margin-bottom: 0.3rem;
}

.integration-list p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.wechat-demo {
    width: 100%;
    height: 500px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 下载区域 */
.download {
    padding: 8rem 3rem;
    background: var(--color-light);
    text-align: center;
}

.download-content {
    max-width: 900px;
    margin: 0 auto;
}

.download-content h2 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 1.5rem;
}

.download-content > p {
    color: var(--color-text-light);
    font-size: 1.1rem;
    margin-bottom: 4rem;
}

.download-options {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
}

.qr-code {
    width: 200px;
    height: 200px;
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.store-buttons {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.store-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: var(--color-dark);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    min-width: 200px;
}

.store-btn:hover {
    background: var(--color-gray);
    transform: translateX(5px);
}

.store-icon {
    font-weight: 600;
    font-size: 1.1rem;
}

/* 页脚 */
.footer {
    padding: 3rem;
    background: var(--color-dark);
    color: white;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 3rem;
}

.footer-info .logo {
    color: white;
    margin-bottom: 0.5rem;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.footer-record a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-record a:hover {
    color: rgba(255, 255, 255, 0.8);
}

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

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.contact-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

.contact-item a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.contact-item a:hover {
    color: white;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content,
    .integration-content {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    
    .hero-visual {
        justify-content: center;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-content {
        padding: 1rem 1.5rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .hero {
        padding: 4rem 1.5rem;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .features,
    .wechat-integration,
    .download {
        padding: 4rem 1.5rem;
    }
    
    .section-header h2,
    .integration-info h2,
    .download-content h2 {
        font-size: 2rem;
    }
    
    .download-options {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
        align-items: center;
    }
    
    .footer-contact {
        align-items: center;
    }
}