/* ========================================
   R3Render 官网样式
   基于赛博朋克科技风格设计
   ======================================== */

/* CSS Variables */
:root {
    /* 主色调 - 基于提供的按钮样式 */
    --main-color: rgb(46, 213, 115);
    --main-bg-color: rgba(46, 213, 116, 0.36);
    --pattern-color: rgba(46, 213, 116, 0.073);
    
    /* 扩展色调 */
    --accent-blue: rgb(56, 189, 248);
    --accent-purple: rgb(168, 85, 247);
    --accent-pink: rgb(236, 72, 153);
    --accent-orange: rgb(251, 146, 60);
    
    /* 背景色 */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: rgba(26, 26, 37, 0.6);
    
    /* 文字色 */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    /* 边框 */
    --border-color: rgba(46, 213, 115, 0.2);
    --border-glow: rgba(46, 213, 115, 0.5);
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, var(--main-color), var(--accent-blue));
    --gradient-glow: radial-gradient(circle, var(--main-bg-color) 0%, rgba(0, 0, 0, 0) 70%);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ========================================
   按钮样式 - 基于提供的CSS
   ======================================== */

.button {
    /* 基础变量 */
    --main-color: rgb(46, 213, 115);
    --main-bg-color: rgba(46, 213, 116, 0.36);
    --pattern-color: rgba(46, 213, 116, 0.073);
    
    /* 可以通过hue-rotate改变颜色 */
    filter: hue-rotate(0deg);
    
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    background: radial-gradient(
            circle,
            var(--main-bg-color) 0%,
            rgba(0, 0, 0, 0) 95%
        ),
        linear-gradient(var(--pattern-color) 1px, transparent 1px),
        linear-gradient(to right, var(--pattern-color) 1px, transparent 1px);
    background-size: 
        cover,
        15px 15px,
        15px 15px;
    background-position: 
        center center,
        center center,
        center center;
    border-image: radial-gradient(
            circle,
            var(--main-color) 0%,
            rgba(0, 0, 0, 0) 100%
        )
        1;
    border-width: 1px 0 1px 0;
    border-style: solid;
    border-color: transparent;
    color: var(--main-color);
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s ease-in-out;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.button:hover {
    background-size: 
        cover,
        10px 10px,
        10px 10px;
    box-shadow: 0 0 30px rgba(46, 213, 115, 0.3);
}

.button:active {
    filter: hue-rotate(250deg);
}

.button.full-width {
    width: 100%;
}

/* 次要按钮 */
.button-secondary {
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s ease-in-out;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.button-secondary:hover {
    border-color: var(--main-color);
    color: var(--main-color);
    box-shadow: 0 0 20px rgba(46, 213, 115, 0.2);
}

.button-secondary.full-width {
    width: 100%;
}

/* ========================================
   导航栏
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    color: var(--main-color);
    font-size: 1.5rem;
}

.logo-text {
    background: linear-gradient(135deg, var(--text-primary), var(--main-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--main-color);
    transition: width var(--transition-fast);
}

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

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

.btn-login {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-login:hover {
    border-color: var(--main-color);
    color: var(--main-color);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* 移动端菜单 */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mobile-menu a {
    color: var(--text-secondary);
    font-size: 1rem;
    padding: var(--spacing-sm) 0;
    display: block;
}

/* ========================================
   Hero 区域
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(46, 213, 115, 0.03) 1px, transparent 1px),
        linear-gradient(to right, rgba(46, 213, 115, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--main-color);
    top: 10%;
    right: 10%;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--accent-blue);
    bottom: 20%;
    left: 5%;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: var(--accent-purple);
    top: 50%;
    right: 30%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(46, 213, 115, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--main-color);
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.gradient-text {
    background: linear-gradient(135deg, var(--main-color), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--main-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Hero 视觉区域 */
.hero-visual {
    position: relative;
}

.render-preview {
    width: 100%;
    aspect-ratio: 1;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    position: relative;
    overflow: hidden;
}

.render-preview::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(var(--pattern-color) 1px, transparent 1px),
        linear-gradient(to right, var(--pattern-color) 1px, transparent 1px);
    background-size: 20px 20px;
}

.preview-grid {
    position: absolute;
    inset: var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.preview-cell {
    background: rgba(46, 213, 115, 0.1);
    border: 1px solid var(--border-color);
    position: relative;
}

.preview-cell.active {
    background: rgba(46, 213, 115, 0.2);
    border-color: var(--main-color);
    box-shadow: 0 0 30px rgba(46, 213, 115, 0.2);
}

.preview-cell.active::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(46, 213, 115, 0.3));
}

/* ========================================
   Section 通用样式
   ======================================== */

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(46, 213, 115, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--main-color);
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ========================================
   产品区域
   ======================================== */

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.product-card.featured {
    grid-column: span 2;
    grid-row: span 2;
    background: linear-gradient(135deg, rgba(46, 213, 115, 0.1), rgba(56, 189, 248, 0.1));
}

.product-icon {
    width: 48px;
    height: 48px;
    color: var(--main-color);
    margin-bottom: var(--spacing-md);
}

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

.product-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.product-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.feature-list {
    margin-bottom: var(--spacing-lg);
}

.feature-list li {
    padding: 0.375rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding-left: 1.25rem;
    position: relative;
}

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

/* ========================================
   工作流区域
   ======================================== */

.workflow-steps {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.workflow-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
}

.step-number {
    font-size: 3rem;
    font-weight: 700;
    color: rgba(46, 213, 115, 0.2);
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.step-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    width: 100%;
}

.step-icon {
    width: 48px;
    height: 48px;
    color: var(--main-color);
    margin: 0 auto var(--spacing-md);
}

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

.workflow-step h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.workflow-step p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.step-arrow {
    position: absolute;
    right: -2rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--main-color);
    font-size: 1.5rem;
    opacity: 0.5;
}

.workflow-step:last-child .step-arrow {
    display: none;
}

/* ========================================
   案例区域
   ======================================== */

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 300px);
    gap: var(--spacing-lg);
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.case-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
}

.case-card.large {
    grid-column: span 2;
    grid-row: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.case-image {
    height: 100%;
    overflow: hidden;
}

.case-card:not(.large) .case-image {
    height: 150px;
}

.case-placeholder {
    width: 100%;
    height: 100%;
    position: relative;
}

.case-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(var(--pattern-color) 1px, transparent 1px),
        linear-gradient(to right, var(--pattern-color) 1px, transparent 1px);
    background-size: 10px 10px;
}

.case-placeholder.architecture {
    background: linear-gradient(135deg, rgba(46, 213, 115, 0.2), rgba(56, 189, 248, 0.2));
}

.case-placeholder.ecommerce {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(236, 72, 153, 0.2));
}

.case-placeholder.game {
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.2), rgba(236, 72, 153, 0.2));
}

.case-placeholder.automotive {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(46, 213, 115, 0.2));
}

.case-placeholder.fashion {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.2), rgba(168, 85, 247, 0.2));
}

.case-content {
    padding: var(--spacing-lg);
}

.case-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(46, 213, 115, 0.1);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--main-color);
    margin-bottom: var(--spacing-sm);
}

.case-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.case-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--main-color);
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: var(--spacing-md);
    transition: gap var(--transition-fast);
}

.case-link:hover {
    gap: 0.5rem;
}

/* ========================================
   资源区域
   ======================================== */

.resources-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.resource-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.resource-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
}

.resource-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.resource-icon svg {
    width: 32px;
    height: 32px;
}

.resource-icon.docs {
    background: rgba(46, 213, 115, 0.1);
    color: var(--main-color);
}

.resource-icon.tutorial {
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent-blue);
}

.resource-icon.asset {
    background: rgba(168, 85, 247, 0.1);
    color: var(--accent-purple);
}

.resource-icon.plugin {
    background: rgba(251, 146, 60, 0.1);
    color: var(--accent-orange);
}

.resource-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.resource-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.resource-link {
    color: var(--main-color);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ========================================
   论坛区域
   ======================================== */

.forum-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
}

.forum-topics {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.topic-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.topic-card:hover {
    border-color: var(--border-glow);
}

.topic-card.hot {
    background: linear-gradient(135deg, rgba(46, 213, 115, 0.05), transparent);
    border-color: rgba(46, 213, 115, 0.3);
}

.topic-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.topic-category {
    padding: 0.25rem 0.75rem;
    background: rgba(56, 189, 248, 0.1);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--accent-blue);
}

.topic-hot {
    padding: 0.25rem 0.75rem;
    background: rgba(236, 72, 153, 0.1);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--accent-pink);
}

.topic-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.topic-card > p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.topic-stats {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* 论坛侧边栏 */
.forum-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
}

.sidebar-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.stats-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
}

.stat-row span:first-child {
    color: var(--text-secondary);
}

.stat-value {
    color: var(--main-color);
    font-weight: 600;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.375rem 0.75rem;
    background: rgba(46, 213, 115, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag:hover {
    border-color: var(--main-color);
    color: var(--main-color);
}

/* ========================================
   订阅方案区域
   ======================================== */

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.toggle-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.toggle-label.active {
    color: var(--text-primary);
}

.save-badge {
    padding: 0.125rem 0.5rem;
    background: var(--main-color);
    color: var(--bg-primary);
    border-radius: 100px;
    font-size: 0.625rem;
    font-weight: 600;
    margin-left: 0.25rem;
}

.toggle-switch {
    position: relative;
    width: 48px;
    height: 24px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 2px;
    top: 2px;
    background: var(--text-secondary);
    transition: all var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider {
    background: rgba(46, 213, 115, 0.2);
    border-color: var(--main-color);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(24px);
    background: var(--main-color);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    position: relative;
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
}

.pricing-card.popular {
    background: linear-gradient(135deg, rgba(46, 213, 115, 0.1), rgba(56, 189, 248, 0.1));
    border-color: var(--main-color);
    transform: scale(1.05);
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-4px);
}

.popular-badge {
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.25rem 1rem;
    background: var(--main-color);
    color: var(--bg-primary);
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.pricing-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: var(--spacing-sm);
}

.currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--main-color);
}

.period {
    color: var(--text-muted);
}

.pricing-header p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pricing-features {
    margin-bottom: var(--spacing-xl);
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(46, 213, 115, 0.1);
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--main-color);
}

/* ========================================
   下载区域
   ======================================== */

.download-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.download-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
}

.platform-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    color: var(--main-color);
}

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

.download-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.download-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
}

.version {
    display: block;
    margin-top: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.download-extra {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
}

.extra-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.extra-item:hover {
    color: var(--main-color);
}

.extra-item svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   页脚
   ======================================== */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: var(--spacing-md) 0;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    border-color: var(--main-color);
    color: var(--main-color);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-links h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ========================================
   登录模态框
   ======================================== */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 420px;
    z-index: 1;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.modal-header p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.login-form {
    margin-bottom: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--main-color);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox input {
    width: 16px;
    height: 16px;
    accent-color: var(--main-color);
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--main-color);
}

.modal-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.modal-divider::before,
.modal-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.modal-divider span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.social-login {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.social-btn:hover {
    border-color: var(--border-glow);
    color: var(--text-primary);
}

.social-btn svg {
    width: 20px;
    height: 20px;
}

.modal-footer {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.modal-footer a {
    color: var(--main-color);
    font-weight: 500;
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-card.featured {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .workflow-steps {
        flex-wrap: wrap;
    }
    
    .workflow-step {
        flex: 0 0 calc(50% - var(--spacing-md));
    }
    
    .step-arrow {
        display: none;
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }
    
    .case-card.large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .forum-content {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-card.featured {
        grid-column: span 1;
    }
    
    .workflow-step {
        flex: 0 0 100%;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .case-card.large {
        grid-template-columns: 1fr;
        grid-column: span 1;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .pricing-card.popular {
        transform: none;
        order: -1;
    }
    
    .pricing-card.popular:hover {
        transform: translateY(-4px);
    }
    
    .download-content {
        grid-template-columns: 1fr;
    }
    
    .download-extra {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* ========================================
   动画效果
   ======================================== */

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.8;
    }
}

.glow-orb {
    animation: pulse 4s ease-in-out infinite;
}

.orb-2 {
    animation-delay: 1s;
}

.orb-3 {
    animation-delay: 2s;
}

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

.preview-cell.active {
    animation: float 3s ease-in-out infinite;
}