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

:root {
    /* 配色方案 */
    --primary-blue: #0066FF;
    --primary-green: #00C48C;
    --bg-light: #FAFAFA;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --text-light: #999999;
    --white: #FFFFFF;
    --border-color: #E5E5E5;
    --blue-light: #E6F2FF;
    --green-light: #E6F9F5;
    --hover-blue: #0052CC;
    --hover-green: #00A871;
    
    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 导航栏 ==================== */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand h2 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-blue);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all 0.3s;
}

/* ==================== Hero 区域 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--blue-light) 0%, var(--green-light) 100%);
    padding-top: 80px;
    overflow: hidden;
}

.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--primary-blue);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--primary-green);
    bottom: -50px;
    left: -50px;
    animation-delay: 5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: var(--primary-blue);
    top: 50%;
    right: 10%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

/* 大屏下防止中文被强制换行，保证整句在同一行显示 */
@media (min-width: 1024px) {
    .hero-subtitle {
        white-space: nowrap; /* 保持整句同一行 */
    }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

/* ==================== Hero 区域核心价值观 ==================== */
.hero-values {
    margin-top: 3rem;
    width: 100%;
}

.hero-values .values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-values .value-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 1.25rem;
    padding: 2rem 1.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-values .value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
    opacity: 0;
    transition: opacity 0.3s;
}

.hero-values .value-card.blue-theme::before {
    background: var(--primary-blue);
}

.hero-values .value-card.green-theme::before {
    background: var(--primary-green);
}

.hero-values .value-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 1);
}

.hero-values .value-card:hover::before {
    opacity: 1;
}

.hero-values .value-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    color: var(--white);
    transition: transform 0.3s ease;
}

.hero-values .value-card:hover .value-icon {
    transform: scale(1.1) rotate(5deg);
}

.hero-values .value-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.hero-values .value-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--hover-blue);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 102, 255, 0.3);
}

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

.btn-secondary:hover {
    background: var(--hover-green);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 196, 140, 0.3);
}

/* ==================== 通用区域样式 ==================== */
section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

/* ==================== 网站简介 ==================== */
.about {
    background: var(--white);
}

.about-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 0;
}

/* ==================== 博客分类 ==================== */
.blog-categories {
    margin-top: 3rem;
    margin-bottom: 3rem;
}

.categories-title {
    font-size: 1.75rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.category-card {
    background: var(--white);
    border-radius: 1.25rem;
    padding: 2rem 1.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
    opacity: 0;
    transition: opacity 0.3s;
}

.category-card.blue-theme::before {
    background: var(--primary-blue);
}

.category-card.green-theme::before {
    background: var(--primary-green);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.12);
}

.category-card:hover::before {
    opacity: 1;
}

.category-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    color: var(--white);
    transition: transform 0.3s ease;
}

.category-card:hover .category-icon {
    transform: scale(1.1) rotate(5deg);
}

.category-icon.blue {
    background: linear-gradient(135deg, var(--primary-blue), var(--hover-blue));
}

.category-icon.green {
    background: linear-gradient(135deg, var(--primary-green), var(--hover-green));
}

.category-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* 项目预览卡片状态样式 */
.project-status {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.project-status span {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.project-status.status-online span {
    background: var(--green-light);
    color: var(--primary-green);
}

.project-status.status-dev span {
    background: var(--blue-light);
    color: var(--primary-blue);
}

/* ==================== 博客平台入口 CTA ==================== */
.blog-cta {
    margin-top: 4rem;
    margin-bottom: 2rem;
}

.blog-cta-card {
    background: linear-gradient(135deg, var(--blue-light) 0%, var(--green-light) 100%);
    border-radius: 2rem;
    padding: 3.5rem 3rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.blog-cta-decoration {
    position: absolute;
    top: 50%;
    right: 3rem;
    transform: translateY(-50%);
    opacity: 0.15;
    pointer-events: none;
}

.blog-cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.blog-cta-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.blog-cta-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.blog-cta-content strong {
    color: var(--primary-blue);
    font-weight: 600;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.value-item {
    text-align: center;
    padding: 1.5rem;
}

.value-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--white);
}

.value-icon.blue {
    background: linear-gradient(135deg, var(--primary-blue), var(--hover-blue));
}

.value-icon.green {
    background: linear-gradient(135deg, var(--primary-green), var(--hover-green));
}

.value-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.value-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==================== 核心价值观独立区域 ==================== */
.values {
    background: var(--bg-light);
    padding: 5rem 0;
}

.values .values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 0;
}

.value-card {
    background: var(--white);
    border-radius: 1.5rem;
    padding: 3rem 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
    opacity: 0;
    transition: opacity 0.3s;
}

.value-card.blue-theme::before {
    background: var(--primary-blue);
}

.value-card.green-theme::before {
    background: var(--primary-green);
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.value-card:hover::before {
    opacity: 1;
}

.value-card .value-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    color: var(--white);
    transition: transform 0.3s ease;
}

.value-card:hover .value-icon {
    transform: scale(1.1) rotate(5deg);
}

.value-card.blue-theme .value-icon {
    background: linear-gradient(135deg, var(--primary-blue), var(--hover-blue));
}

.value-card.green-theme .value-icon {
    background: linear-gradient(135deg, var(--primary-green), var(--hover-green));
}

.value-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.value-description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin: 0;
}

/* ==================== 产品展示 ==================== */
.products {
    background: var(--bg-light);
}

/* ==================== 创作分享预览区域 ==================== */
.products-preview-section {
    background: var(--bg-light);
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-top: 1rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: 1.5rem;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
    opacity: 0;
    transition: opacity 0.3s;
}

.product-card.blue-theme::before {
    background: var(--primary-blue);
}

.product-card.green-theme::before {
    background: var(--primary-green);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.product-card:hover::before {
    opacity: 1;
}

.product-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.product-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.product-logo.blue {
    background: linear-gradient(135deg, var(--primary-blue), var(--hover-blue));
}

.product-logo.green {
    background: linear-gradient(135deg, var(--primary-green), var(--hover-green));
}

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

.product-tag {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: bold;
}

.product-card.blue-theme .product-features li::before {
    color: var(--primary-blue);
}

.product-screenshot {
    margin-bottom: 2rem;
    border-radius: 12px;
    overflow: hidden;
    background: var(--white);
    min-height: 300px;
    position: relative;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.product-card:hover .product-screenshot {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.screenshot-image {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    object-position: center top;
    display: block;
    transition: all 0.3s ease;
    opacity: 1;
    cursor: pointer;
    background: var(--white);
}

@keyframes fadeInImage {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.product-card:hover .screenshot-image {
    transform: scale(1.02);
}

/* 图片加载中状态 */
.screenshot-image[src=""] {
    display: none;
}

.screenshot-placeholder {
    width: 100%;
    height: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    background: var(--bg-light);
}

.product-footer {
    margin-top: auto;
    padding-top: 1.5rem;
}

.product-footer .btn {
    width: 100%;
    text-align: center;
}

/* ==================== 项目预览（首页缩略图展示） ==================== */
.projects-preview {
    margin-top: 3rem;
    margin-bottom: 2rem;
}

.projects-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.project-preview-card {
    background: var(--white);
    border-radius: 1.25rem;
    padding: 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    cursor: pointer;
}

.project-preview-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.project-preview-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--bg-light);
}

.project-preview-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--blue-light) 0%, var(--green-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

.project-preview-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-preview-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.project-preview-tag {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.project-preview-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-light);
}

.project-preview-link {
    color: var(--primary-blue);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-preview-link:hover {
    color: var(--hover-blue);
}

/* ==================== 未来规划 ==================== */
.future {
    background: var(--white);
}

.future-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 2rem;
}

.future-timeline::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
    padding-left: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -1.5rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--border-color);
}

.timeline-marker.blue {
    background: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--primary-blue);
}

.timeline-marker.green {
    background: var(--primary-green);
    box-shadow: 0 0 0 3px var(--primary-green);
}

.timeline-content {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    transition: all 0.3s;
}

.timeline-content:hover {
    background: var(--white);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateX(10px);
}

.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--text-primary);
    color: var(--white);
    padding: 2rem 0 1rem; /* 减小padding，降低高度 */
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    margin-bottom: 1.5rem; /* 减小间距 */
}

.footer-section {
    flex: 1;
    min-width: 200px;
}

.footer-section h3 {
    font-size: 1.25rem; /* 减小字体 */
    margin-bottom: 0.75rem; /* 减小间距 */
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin: 0;
}

.footer-section h4 {
    font-size: 0.95rem; /* 减小字体 */
    margin-bottom: 0.75rem; /* 减小间距 */
    color: var(--white);
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: 0.4rem; /* 减小间距 */
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.875rem; /* 统一字体大小 */
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1rem; /* 减小padding */
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem; /* 减小字体 */
    line-height: 1.8;
}

.footer-bottom p {
    margin: 0.5rem 0; /* 减小间距 */
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* 页脚链接分隔符 */
.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin: 0.5rem 0;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s;
    padding: 0 0.5rem;
}

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

.footer-links span {
    color: rgba(255, 255, 255, 0.4);
}

/* ==================== 动画效果 ==================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    will-change: opacity, transform;
}

/* 可见状态 */
.fade-in.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* 确保初始状态是隐藏的（防止FOUT） */
html:not(.js-loaded) .fade-in {
    opacity: 0;
    transform: translateY(30px);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        transition: left 0.3s;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-values .values-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .hero-values .value-card {
        padding: 1.5rem 1rem;
    }

    .hero-values .value-icon {
        width: 56px;
        height: 56px;
    }

    .hero-values .value-title {
        font-size: 1.125rem;
    }

    .hero-values .value-description {
        font-size: 0.85rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .about-card {
        padding: 2rem;
    }

    .categories-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }

    .category-card {
        padding: 1.5rem 1rem;
    }

    .blog-cta-card {
        padding: 2.5rem 2rem;
    }

    .blog-cta-decoration {
        display: none;
    }

    .blog-cta-content h3 {
        font-size: 1.5rem;
    }

    .blog-cta-content p {
        font-size: 1rem;
    }

    .product-card {
        padding: 2rem;
    }

    .product-screenshot {
        min-height: 250px;
    }

    .screenshot-image {
        max-height: 350px;
    }

    .screenshot-placeholder {
        height: 250px;
    }

    .future-timeline {
        padding-left: 1.5rem;
    }

    .timeline-item {
        padding-left: 2rem;
    }

    .timeline-marker {
        left: -1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        margin-bottom: 2rem;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-values {
        margin-top: 2rem;
    }

    .hero-values .values-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }

    .hero-values .value-card {
        padding: 1.5rem 0.75rem;
    }

    .hero-values .value-icon {
        width: 50px;
        height: 50px;
    }

    .hero-values .value-title {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .hero-values .value-description {
        font-size: 0.8rem;
    }

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

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

    .value-card {
        padding: 2.5rem 2rem;
    }

    .value-card .value-icon {
        width: 80px;
        height: 80px;
    }

    .value-title {
        font-size: 1.5rem;
    }

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

    .category-card {
        padding: 1.5rem;
    }

    .category-icon {
        width: 50px;
        height: 50px;
    }

    .blog-cta-card {
        padding: 2rem 1.5rem;
    }

    .blog-cta-content h3 {
        font-size: 1.25rem;
    }

    .blog-cta-content p {
        font-size: 0.95rem;
    }
}