/* 糖原计划官网样式 - 复古未来主义风格 */
:root {
    /* 主题色彩系统 */
    --primary-color: #FF6306;
    --primary-dark: #E05500;
    --primary-light: #FF8C42;
    --secondary-color: #1A1A1A;
    --accent-color: #00D4AA;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-primary: #FFFFFF;
    --bg-secondary: #FCFCFC;
    --bg-dark: #1A1A1A;
    --border-color: #E0E0E0;
    
    /* 字体系统 */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* 布局系统 */
    --container-max-width: 1200px;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    
    /* 动画系统 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
}

/* 容器系统 */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 12px;
}



.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-normal);
}

/* 英雄区域样式 */
.hero {
    padding: 80px 0 0;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr auto;
    gap: 100px;
    align-items: stretch;
    min-height: 500px;
}

/* 功能网格布局 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 60px;
}

.feature-item {
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-item h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-item p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 8px;
}

.feature-item strong {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* 二维码图片样式 */
.qrcode-image-large {
    width: 200px;
    height: 200px;
    border-radius: var(--border-radius);
    object-fit: contain;
}

/* 英雄区域视觉部分样式 */
.hero-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* 轮播组件样式 */
.carousel-container {
    position: relative;
    width: 90%;
    aspect-ratio: 3/4;
    overflow: hidden;
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 20px;
    width: 100%;
}



.carousel-indicators {
    display: flex;
    gap: 8px;
}

.indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: var(--transition-fast);
}

.indicator.active {
    background: #FF6306;
    transform: scale(1.2);
}



/* 小程序二维码区域样式 */
.qrcode-section {
    padding-bottom: 100px;
    background: var(--bg-secondary);
}

.qrcode-content {
    display: flex;
    justify-content: center;
}

.qrcode-card {
    display: flex;
    align-items: center;
    gap: 32px;
    background: white;
    padding: 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 500px;
}

.qrcode-info h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.qrcode-info p {
    color: var(--text-secondary);
    margin-bottom: 8px;
}



/* 特性区域样式 */
.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 48px;
    color: var(--text-primary);
}

/* 页脚样式 */

/* 页脚样式 */
.footer {
    background: linear-gradient(#FCFCFC, #E0E0E0);
    padding: 20px 0;
}

.footer-copyright {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

/* 功能介绍页面特有样式 */
.page-header {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, #FFF8F0 0%, #FFFFFF 50%, #F0F8FF 100%);
    text-align: center;
}

.page-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(7deg, #ff6306 0% 50%, #ffaa00 50% 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.feature-details {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.feature-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}



.feature-section {
    margin-bottom: 60px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.feature-subtitle {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.4;
}

.feature-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.feature-steps {
    margin: 24px 0;
    padding-left: 24px;
}

.feature-steps li {
    margin-bottom: 16px;
    line-height: 1.6;
}

.feature-steps strong {
    color: var(--primary-color);
    font-weight: 600;
}

.feature-note {
    font-size: 1rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 24px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.02);
    border-left: 3px solid var(--primary-color);
    border-radius: var(--border-radius-sm);
    line-height: 1.6;
}

.route-type {
    margin-bottom: 32px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--primary-color);
}

.route-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.route-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

.function-item {
    margin-bottom: 24px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid #4CAF50;
}

.function-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.function-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}





/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

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

    .page-title {
        font-size: 2.2rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    /* 轮播组件移动端适配 */
    .carousel-container {
        width: 250px;
        height: 333px;
    }

    .carousel-controls {
        bottom: 12px;
        gap: 12px;
    }

    /* 二维码区域移动端适配 */
    .qrcode-card {
        flex-direction: column;
        text-align: center;
        gap: 20px;
        padding: 24px;
    }

    .qrcode-image-large {
        width: 160px;
        height: 160px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .feature-item {
        padding: 24px;
    }

    /* 更小屏幕下的轮播和二维码适配 */
    .carousel-container {
        width: 200px;
        height: 267px;
    }

    .qrcode-card {
        padding: 20px;
    }

    .qrcode-image-large {
        width: 140px;
        height: 140px;
    }
}