/* 日系清新风格变量定义 */
:root {
    /* 主色调 - 清新绿色系 */
    --primary-green: #7CB342;
    --light-green: #AED581;
    --pale-green: #E8F5E8;
    
    /* 辅助色 - 温暖橙色系 */
    --accent-orange: #FF8A65;
    --light-orange: #FFCCBC;
    
    /* 中性色 - 日系灰色调 */
    --text-dark: #2E2E2E;
    --text-medium: #5D5D5D;
    --text-light: #8E8E8E;
    --bg-white: #FFFFFF;
    --bg-light: #FAFAFA;
    --bg-gray: #F5F5F5;
    
    /* 阴影效果 */
    --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

/* 容器样式 */
.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 rgba(124, 179, 66, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

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

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-green);
    letter-spacing: -0.5px;
}

.logo-subtitle {
    font-size: 12px;
    color: var(--text-light);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-medium);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 8px 0;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-green);
    border-radius: 2px;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-green);
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* 首页英雄区域 */
.hero {
    margin-top: 70px;
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--pale-green) 0%, var(--bg-white) 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 12px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-medium);
    margin-bottom: 20px;
    font-weight: 500;
}

.hero-description {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 1.8;
}

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

.btn {
    padding: 12px 32px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-green);
    color: white;
    box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
    background: var(--light-green);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

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

/* 手机模型 */
.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    background: var(--bg-white);
    border-radius: 30px;
    box-shadow: var(--shadow-hover);
    margin: 0 auto;
    animation: float 3s ease-in-out infinite;
}

.screen {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    background: var(--bg-light);
    border-radius: 20px;
    overflow: hidden;
}

.app-preview {
    width: 100%;
    height: 100%;
    background: var(--pale-green);
    display: flex;
    align-items: center;
    justify-content: center;
}

.manga-page {
    width: 90%;
    height: 80%;
    background: white;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-soft);
    padding: 20px;
}

.manga-content {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--light-green), var(--accent-orange));
    background-size: contain; /* 保持图片比例，完整显示 */
    border-radius: var(--radius-sm);
}

/* 特色功能区域 */
.features {
    padding: 100px 0;
    background: var(--bg-white);
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--bg-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--pale-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.feature-icon i {
    font-size: 32px;
    color: var(--primary-green);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-medium);
    line-height: 1.6;
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background: var(--bg-light);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    max-width: 600px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-white);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    text-align: center;
    transition: var(--transition);
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.download-icon {
    font-size: 48px;
    margin-bottom: 24px;
}

.android .download-icon {
    color: #4CAF50;
}

.ios .download-icon {
    color: #000000;
}

.download-card h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.version {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 4px;
}

.size {
    font-size: 14px;
    color: var(--text-medium);
    margin-bottom: 24px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-green);
    color: white;
    padding: 12px 32px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.download-btn:hover {
    background: var(--light-green);
    transform: translateY(-2px);
}

/* 用户评价区域 */
.reviews {
    padding: 100px 0;
    background: var(--bg-white);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.review-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.reviewer-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.reviewer-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.stars {
    color: var(--accent-orange);
}

.review-text {
    color: var(--text-medium);
    line-height: 1.8;
    font-style: italic;
}

/* 页脚 */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 8px;
}

.footer-brand p {
    color: var(--text-light);
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

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

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: var(--shadow-soft);
        padding: 40px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

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

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

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

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

    .hero-title {
        font-size: 36px;
    }

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

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .features-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 0;
    }

    .hero-container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 32px;
    }

    .section-title {
        font-size: 28px;
    }

    .feature-card,
    .download-card,
    .review-card {
        padding: 24px;
    }
}