/**
 * SynergyStack - TRON风格深色主题样式表
 * 100%模仿TRON网站设计风格
 */

/* ==================== CSS Variables ==================== */
:root {
    /* TRON配色方案 - 深色主题 */
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-card-hover: #1a1a1a;
    --bg-overlay: rgba(0, 0, 0, 0.8);
    
    /* TRON主色调 - 红色/琥珀色 */
    --primary: #EF0027;
    --primary-hover: #FF1A35;
    --primary-dark: #C7001F;
    --primary-glow: rgba(239, 0, 39, 0.3);
    
    /* 辅助色 */
    --accent: #FFB800;
    --accent-glow: rgba(255, 184, 0, 0.3);
    
    /* 文字颜色 */
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --text-accent: var(--primary);
    
    /* 边框颜色 */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-hover: rgba(255, 255, 255, 0.2);
    
    /* 间距系统 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* 字体 */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', 'Noto Sans JP', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;
    
    /* 字体大小 */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px var(--primary-glow);
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 70vh;
    overflow-x: hidden;
}

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

ul, ol {
    list-style: none;
}

/* ==================== Container ==================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-lg);
}

/* ==================== Header / Navigation ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    transition: background var(--transition-base);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    color: var(--text-primary);
    opacity: 0.8;
}

.logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    font-size: 20px;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    font-family: serif;
}

.logo-text {
    letter-spacing: -0.02em;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav a {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-sm) var(--spacing-md);
    position: relative;
    transition: color var(--transition-fast);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

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

.nav a:hover::after,
.nav a.active::after {
    width: calc(100% - var(--spacing-md) * 2);
}

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-color-hover);
    background: var(--bg-card);
}

.lang-icon {
    font-size: var(--text-base);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-xs);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-lg);
}

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

.lang-dropdown a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.lang-dropdown a:hover,
.lang-dropdown a.active {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    color: var(--text-primary);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.mobile-menu.active {
    display: block !important;
    visibility: visible !important;
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu a {
    display: block;
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: var(--text-base);
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu a:last-child {
    border-bottom: none;
}

.mobile-menu a.active {
    color: var(--primary);
}

.mobile-lang-switcher {
    display: flex;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.mobile-lang-switcher a {
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

/* ==================== Hero Section ==================== */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--spacing-lg) var(--spacing-4xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 50% 0%, rgba(239, 0, 39, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(239, 0, 39, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 20% 80%, rgba(255, 184, 0, 0.05) 0%, transparent 40%);
    z-index: 0;
}

/* Grid pattern overlay */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(239, 0, 39, 0.1);
    border: 1px solid var(--primary);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xl);
    /* 修复文字裁剪问题 - 确保padding足够 */
    line-height: 1.5;
}

.hero-title {
    margin-bottom: var(--spacing-xl);
}

.hero-title-small {
    display: block;
    font-size: var(--text-2xl);
    font-weight: 400;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin-bottom: var(--spacing-md);
}

.hero-title-main {
    display: block;
    font-size: clamp(var(--text-4xl), 10vw, var(--text-7xl));
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    letter-spacing: -0.03em;
    text-shadow: 0 0 60px rgba(239, 0, 39, 0.3);
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-hover);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--primary-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-color-hover);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--text-base);
}

/* ==================== Sections ==================== */
section {
    padding: var(--spacing-4xl) 0;
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

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

/* ==================== Values Section ==================== */
.values {
    background: var(--bg-secondary);
    position: relative;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.value-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.value-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.value-card:hover::before {
    transform: scaleX(1);
}

.value-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(239, 0, 39, 0.1);
    border-radius: var(--radius-lg);
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-lg);
}

.value-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.value-desc {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== Articles / News Section ==================== */
.latest-news {
    position: relative;
}

.articles-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.article-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.article-date {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.article-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.article-title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.article-title a:hover {
    color: var(--primary);
}

.article-summary {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.article-link {
    font-size: var(--text-sm);
    color: var(--primary);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.article-link:hover {
    color: var(--primary-hover);
}

.no-articles {
    text-align: center;
    color: var(--text-tertiary);
    padding: var(--spacing-4xl) 0;
    grid-column: 1 / -1;
}

/* ==================== CTA Section ==================== */
.cta {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    opacity: 0.3;
}

.cta-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.cta-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

/* ==================== About Page ==================== */
.about-hero {
    padding: 160px 0 var(--spacing-4xl);
    text-align: center;
    position: relative;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(239, 0, 39, 0.15) 0%, transparent 60%);
    z-index: 0;
}

.about-hero .container {
    position: relative;
    z-index: 1;
}

.about-intro {
    background: var(--bg-secondary);
}

.about-intro-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-intro h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.about-intro p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

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

.feature-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(239, 0, 39, 0.1);
    border-radius: 50%;
    font-size: var(--text-3xl);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.feature-desc {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.7;
}

.values-detail {
    background: var(--bg-secondary);
}

.value-detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    padding-left: calc(var(--spacing-2xl) + 20px);
}

.value-detail-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary);
    border-radius: var(--radius-full);
}

.value-detail-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.value-detail-desc {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.8;
}

.vision-section {
    text-align: center;
}

.vision-section h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.vision-section > p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3xl);
}

.vision-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
}

.vision-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.vision-item-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
}

.vision-item-text {
    font-size: var(--text-base);
    color: var(--text-primary);
}

/* ==================== Blog Page ==================== */
.blog-hero {
    padding: 160px 0 var(--spacing-4xl);
    text-align: center;
    position: relative;
}

.blog-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(239, 0, 39, 0.15) 0%, transparent 60%);
    z-index: 0;
}

.blog-hero .container {
    position: relative;
    z-index: 1;
}

.blog-hero .section-title {
    font-size: var(--text-5xl);
}

.blog-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.blog-count {
    text-align: center;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-2xl);
}

/* ==================== Join Page ==================== */
.join-hero {
    padding: 160px 0 var(--spacing-4xl);
    text-align: center;
    position: relative;
}

.join-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(239, 0, 39, 0.15) 0%, transparent 60%);
    z-index: 0;
}

.join-hero .container {
    position: relative;
    z-index: 1;
}

.join-intro {
    background: var(--bg-secondary);
}

.join-intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.join-intro h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.join-intro p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.benefit-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.benefit-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
}

.benefit-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(239, 0, 39, 0.1);
    border-radius: var(--radius-md);
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-md);
}

.benefit-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.benefit-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.expectations-list {
    max-width: 600px;
    margin: 0 auto;
}

.expectation-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.expectation-item:last-child {
    border-bottom: none;
}

.expectation-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-size: var(--text-sm);
    font-weight: 600;
    flex-shrink: 0;
}

.expectation-text {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.6;
}

.process-section {
    text-align: center;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.process-step {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-size: var(--text-xl);
    font-weight: 700;
    margin: 0 auto var(--spacing-lg);
}

.step-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.step-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

.contact-section {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    text-align: center;
}

.contact-section h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.contact-section > p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.contact-note {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

/* ==================== Article Page ==================== */
.article-page {
    padding: 120px 0 var(--spacing-4xl);
}

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

.article-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.article-meta {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--text-secondary);
}

.article-content p {
    margin-bottom: var(--spacing-lg);
}

.article-content h2 {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-2xl) 0 var(--spacing-lg);
}

.article-content ul, .article-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.article-content li {
    margin-bottom: var(--spacing-sm);
    list-style: disc;
}

.article-content a {
    color: var(--primary);
}

.article-content a:hover {
    text-decoration: underline;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.back-link:hover {
    color: var(--primary);
}

.not-found {
    text-align: center;
    padding: var(--spacing-4xl) 0;
}

.not-found h1 {
    font-size: var(--text-7xl);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.not-found p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ==================== Footer ==================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-links h4,
.footer-values h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-lg);
}

.footer-links a {
    display: block;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

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

.footer-values p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
}

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

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

/* ==================== Search Box ==================== */
.search-box {
    max-width: 500px;
    margin: var(--spacing-3xl) auto 0;
}

.search-form {
    display: flex;
    gap: var(--spacing-sm);
}

.search-input {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-base);
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

.search-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.search-btn:hover {
    background: var(--primary-hover);
}

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

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px var(--primary-glow); }
    50% { box-shadow: 0 0 40px var(--primary-glow); }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fadeIn {
    animation: fadeIn 0.6s ease forwards;
}

/* Stagger animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    .hero-title-main {
        font-size: var(--text-5xl);
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    .values-grid,
    .articles-grid,
    .blog-grid {
    max-width: 1200px;
    margin: 0 auto;
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    
    .lang-switcher {
        display: none;
    }
    
    .hero {
        padding: 100px var(--spacing-md) var(--spacing-3xl);
    }
    
    .hero-title-small {
        font-size: var(--text-lg);
        letter-spacing: 0.2em;
    }
    
    .hero-title-main {
        font-size: var(--text-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-base);
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    .section-subtitle {
        font-size: var(--text-base);
    }
    
    .value-card,
    .article-card,
    .benefit-card {
        padding: var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .footer-brand {
        max-width: 100%;
    }
    
    .search-form {
        flex-direction: column;
    }
    
    .article-title {
        font-size: var(--text-2xl);
    }
    
    .cta-title {
        font-size: var(--text-2xl);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title-main {
        font-size: var(--text-3xl);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--text-xs);
    }
    
    .values-grid,
    .articles-grid,
    .blog-grid,
    .features-grid,
    .benefits-grid,
    .process-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== Scrollbar ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color-hover);
}

/* ==================== Selection ==================== */
::selection {
    background: var(--primary);
    color: white;
}

/* ==================== Focus States ==================== */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ==================== Print ==================== */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .header,
    .footer,
    .hero-buttons,
    .mobile-menu {
        display: none;
    }
}

/* ==================== Logo Local Name ==================== */
.logo-text-local {
    font-size: var(--text-lg);
    font-weight: 400;
    color: var(--text-secondary);
    margin-left: var(--spacing-xs);
}

.logo-text-local::before {
    content: '|';
    margin-right: var(--spacing-xs);
    color: var(--border-color);
}

/* ==================== Values Detail ==================== */
.values-detail-content {
    max-width: 800px;
    margin: 0 auto;
}

.values-detail-content .value-detail-card {
    margin-bottom: var(--spacing-xl);
}

.values-detail-content .value-detail-card:last-child {
    margin-bottom: 0;
}

/* ==================== About Hero ==================== */
.about-hero .hero-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(239, 0, 39, 0.1);
    border: 1px solid var(--primary);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
}

.about-hero .hero-title {
    margin-bottom: var(--spacing-xl);
}

.about-hero .hero-subtitle {
    max-width: 700px;
    margin: 0 auto;
    font-size: var(--text-xl);
}

/* ==================== About Intro ==================== */
.about-intro {
    background: var(--bg-secondary);
}

.about-intro-content {
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
    text-align: center;
}

.about-intro-content h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.about-intro-content p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== Projects Page ==================== */
.projects-hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 0 60px;
    background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(239,0,39,0.05) 100%);
}

.projects-hero .hero-title {
    font-size: var(--text-5xl);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

.projects-hero .hero-subtitle {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary);
    transform: translateY(-4px);
}

.project-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.project-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.project-name {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.project-name-local {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.project-status {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-status.running {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border: 1px solid #10b981;
}

.project-status.experimental {
    background: rgba(139, 92, 246, 0.2);
    color: #8b5cf6;
    border: 1px solid #8b5cf6;
}

.project-status.beta {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid #f59e0b;
}

.project-description {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.project-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.project-participants {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.project-tag {
    padding: 2px 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-hero {
        padding: 100px 0 40px;
    }
    
    .projects-hero .hero-title {
        font-size: var(--text-3xl);
    }
}
/* Hero Stats 居中 */
.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: var(--radius-lg);
    margin: 0 auto;
    max-width: fit-content;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-number {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: #00f0ff;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

@media (max-width: 768px) {
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .stat-divider {
        width: 60px;
        height: 1px;
    }
}
/* Projects Hero 居中修复 */
.projects-hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.projects-hero .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
}

.projects-hero .hero-title {
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ==================== 浮动音乐控制器 ==================== */
.music-controller {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: var(--z-fixed);
    display: flex;
    align-items: center;
    gap: 12px;
}

.music-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(10, 10, 10, 0.95);
    border: 2px solid var(--primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    box-shadow: 0 0 20px var(--primary-glow),
                inset 0 0 15px rgba(239, 0, 39, 0.1);
    backdrop-filter: blur(10px);
}

.music-btn:hover {
    transform: scale(1.1);
    border-color: var(--primary-hover);
    box-shadow: 0 0 35px var(--primary-glow),
                0 0 60px rgba(239, 0, 39, 0.2),
                inset 0 0 20px rgba(239, 0, 39, 0.15);
}

.music-btn svg {
    width: 24px;
    height: 24px;
    fill: var(--primary);
    transition: fill var(--transition-fast);
}

.music-btn:hover svg {
    fill: var(--primary-hover);
}

/* 播放状态呼吸灯效果 */
.music-btn.playing {
    animation: musicPulse 2s ease-in-out infinite;
}

@keyframes musicPulse {
    0%, 100% {
        box-shadow: 0 0 20px var(--primary-glow),
                    inset 0 0 15px rgba(239, 0, 39, 0.1);
    }
    50% {
        box-shadow: 0 0 40px var(--primary-glow),
                    0 0 60px rgba(239, 0, 39, 0.3),
                    inset 0 0 25px rgba(239, 0, 39, 0.2);
    }
}

/* 音量滑块容器 */
.volume-control {
    background: rgba(10, 10, 10, 0.95);
    border: 1px solid rgba(239, 0, 39, 0.3);
    border-radius: 24px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(20px);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.volume-control.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.volume-icon {
    width: 18px;
    height: 18px;
    fill: var(--text-secondary);
}

.volume-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 10px var(--primary-glow);
    transition: all var(--transition-fast);
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--primary-hover);
}

.volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px var(--primary-glow);
}

/* 进度条 */
.music-progress {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.music-progress-bar {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width 0.1s linear;
}

/* 工具提示 */
.music-tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10, 10, 10, 0.95);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: var(--text-xs);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    border: 1px solid rgba(239, 0, 39, 0.3);
}

.music-btn:hover .music-tooltip {
    opacity: 1;
    visibility: visible;
}


.popup-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.popup-btn:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: #00f0ff;
    color: #00f0ff;
}

/* ========================================
   SPA 过渡动画样式
   ======================================== */

/* 主内容区域 */
.main-content {
    min-height: calc(100vh - 300px);
    padding-top: 80px;
    transition: opacity 0.15s ease;
}

/* SPA加载状态 */
.main-content.loading {
    opacity: 0.6;
}

.main-content.fade-out {
    opacity: 0;
    transform: translateY(10px);
}

.main-content.fade-in {
    opacity: 1;
    transform: translateY(0);
}

/* SPA加载动画 */
.spa-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 120px 0;
}

.spa-loading .spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(99, 102, 241, 0.2);
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 页面切换过渡 */
.page-transition-enter {
    opacity: 0;
    transform: translateY(20px);
}

.page-transition-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.15s ease, transform 0.3s ease;
}

/* 滚动动画（已有样式扩展） */
.animate-ready {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-visible {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式 */
@media (max-width: 768px) {
    .main-content {
        padding-top: 70px;
    }
    
    .spa-loading {
        padding: 80px 0;
    }
}