/* ============================================
   IKIK Media - 视觉设计工作室
   现代暗黑主题 + 亮绿色强调色
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-bg: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-card: #1a1a1a;
    --color-accent: #00ff88;
    --color-accent-hover: #00cc6a;
    --color-text: #ffffff;
    --color-text-secondary: #888888;
    --color-text-muted: #666666;
    --color-border: #2a2a2a;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'SF Mono', Monaco, monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(0, 255, 136, 0.3);
    --shadow-glow-strong: 0 0 60px rgba(0, 255, 136, 0.5);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   LOADER - 页面加载动画
   ============================================ */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-logo {
    font-size: 4rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    margin-bottom: var(--spacing-md);
    animation: loaderBounce 1s ease infinite;
}

@keyframes loaderBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: var(--color-bg-card);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
}

.loader-progress {
    width: 0%;
    height: 100%;
    background: var(--color-accent);
    animation: loadProgress 2s ease forwards;
}

@keyframes loadProgress {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* ============================================
   LANGUAGE SWITCHER - 语言切换器
   ============================================ */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-right: var(--spacing-md);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border-radius: 4px;
}

.lang-btn:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.lang-btn.active {
    color: var(--color-accent);
    font-weight: 700;
}

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

/* 中文排版优化 */
html[lang="zh-CN"] body {
    font-family: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html[lang="zh-CN"] .hero-title {
    font-weight: 700;
    letter-spacing: 0.1em;
}

html[lang="zh-CN"] .hero-description p {
    line-height: 1.9;
    letter-spacing: 0.05em;
}

html[lang="zh-CN"] .service-desc,
html[lang="zh-CN"] .about-description {
    line-height: 1.9;
}

/* 英文排版 */
html[lang="en"] body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html[lang="en"] .hero-title {
    font-weight: 900;
    letter-spacing: -0.02em;
}

/* ============================================
   NAVIGATION - 导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    border-bottom-color: var(--color-border);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* 移动端语言切换器位置调整 */
@media (max-width: 768px) {
    .language-switcher {
        margin-right: auto;
        margin-left: var(--spacing-sm);
    }
    
    .nav-container {
        flex-wrap: wrap;
    }
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

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

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-normal);
}

.nav-link:hover {
    color: var(--color-accent);
}

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

/* 隐藏导航栏中的开始项目按钮 */
.nav-btn {
    display: none !important;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   BUTTONS - 按钮样式
   ============================================ */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg);
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.3);
}

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

.btn-primary:active {
    transform: translateY(0);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1rem;
}

.btn-text {
    position: relative;
    z-index: 2;
}

.btn-icon {
    position: relative;
    z-index: 2;
    transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* Button Ripple Effect */
.btn-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:active .btn-ripple {
    width: 300px;
    height: 300px;
}

/* ============================================
   HERO SECTION - 主视觉区域
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-md);
    overflow: hidden;
}

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

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.1) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

/* 特殊样式：AESTHETIC 单词 */
.title-line.highlight {
    font-size: clamp(3rem, 10vw, 7rem);
    line-height: 0.9;
    letter-spacing: -0.04em;
    margin: 0.1em 0;
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(50px);
    animation: slideUpFade 0.8s ease forwards;
}

.title-line:nth-child(1) { animation-delay: 0.2s; }
.title-line:nth-child(2) { animation-delay: 0.4s; }
.title-line:nth-child(3) { animation-delay: 0.6s; }

@keyframes slideUpFade {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.title-line.highlight {
    color: var(--color-accent);
    text-shadow: 0 0 60px rgba(0, 255, 136, 0.6), 0 0 120px rgba(0, 255, 136, 0.3);
    background: linear-gradient(135deg, var(--color-accent) 0%, #00ffcc 50%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px rgba(0, 255, 136, 0.4));
}

.hero-description {
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(17, 17, 17, 0.8);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.hero-description p {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
}

.hero-btn {
    animation: bounceIn 0.8s ease 0.8s both;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    opacity: 0;
    animation: fadeInUp 0.8s ease 1.2s forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.scroll-mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--color-text-muted);
    border-radius: 13px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 2px;
    animation: scrollWheel 1.5s ease infinite;
}

@keyframes scrollWheel {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(12px); opacity: 0; }
}

.scroll-text {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
}

/* ============================================
   SECTION TITLES - 区块标题
   ============================================ */
.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-lg);
}

.section-title-center {
    justify-content: center;
}

.title-number {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-accent);
    letter-spacing: 0;
}

.title-text {
    position: relative;
}

/* ============================================
   WORKS SECTION - 设计案例
   ============================================ */
.works-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-secondary);
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.work-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: var(--color-bg-card);
    cursor: pointer;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.work-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.work-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition-slow), transform var(--transition-slow);
}

.work-card:hover .work-image img {
    filter: grayscale(0%);
    transform: scale(1.1);
}

.work-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-md);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.work-card:hover .work-overlay {
    opacity: 1;
}

.work-info {
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.work-card:hover .work-info {
    transform: translateY(0);
}

.work-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.work-category {
    font-size: 0.875rem;
    color: var(--color-accent);
}

/* ============================================
   SERVICES SECTION - 系统功能
   ============================================ */
.services-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

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

.service-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.service-card-link:hover {
    color: inherit;
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-normal), transform var(--transition-bounce);
}

.service-card:hover .service-icon {
    color: var(--color-accent);
    transform: scale(1.1) rotate(5deg);
}

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

.service-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.02em;
}

.service-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   ABOUT SECTION - 关于我们（全新设计）
   ============================================ */
.about-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* 公司简介卡片 */
.about-intro-card {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(0, 255, 136, 0.02) 100%);
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: 16px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.company-name {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.name-en {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

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

.name-cn {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.company-tagline {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tagline-highlight {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
    background: rgba(0, 255, 136, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    border: 1px solid rgba(0, 255, 136, 0.3);
}

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

/* 核心理念 */
.about-philosophy {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-left: 2px solid var(--color-accent);
    padding-left: var(--spacing-sm);
}

.philosophy-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.philosophy-icon {
    color: var(--color-accent);
    font-size: 0.75rem;
}

.philosophy-text {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

/* 详细介绍 */
.about-description-wrapper {
    background: var(--color-bg-card);
    border-radius: 12px;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
}

.about-description-main {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 2;
    margin-bottom: var(--spacing-sm);
    text-align: justify;
}

.about-description-sub {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.9;
    text-align: justify;
}

/* 业务特色标签 */
.about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.about-tag {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

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

.about-tag.tag-highlight {
    background: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
    font-weight: 600;
}

/* 数据统计 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.stat-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.stat-item:hover::before {
    transform: scaleX(1);
}

.stat-number {
    display: inline;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-accent);
    line-height: 1;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    letter-spacing: 0.05em;
}

/* 视觉展示区域 */
.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.visual-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1.5fr 1fr;
    gap: var(--spacing-sm);
    width: 100%;
    max-width: 350px;
    aspect-ratio: 1;
}

.visual-item {
    background: var(--color-bg-card);
    border-radius: 16px;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.visual-item-large {
    grid-row: span 1;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.15) 0%, rgba(0, 255, 136, 0.05) 100%);
    border-color: rgba(0, 255, 136, 0.3);
}

.visual-item-accent {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

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

.visual-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-accent);
    line-height: 1;
}

.visual-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.2em;
    margin-top: 0.25rem;
}

.visual-icon {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

.visual-item-accent .visual-content {
    flex-direction: row;
    gap: var(--spacing-xs);
}

.visual-item-accent .visual-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-bg);
}

.visual-item-accent .visual-divider {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--color-bg);
    opacity: 0.7;
}

.visual-item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-glow);
}

/* 底部公司名 */
.footer-company {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: 0.25rem;
}

/* ============================================
   SUB PAGE - 二级页面（陈列设计详情页）
   ============================================ */
.sub-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.sub-page.active {
    opacity: 1;
    visibility: visible;
}

.sub-page-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
}

.sub-page-content {
    position: relative;
    width: 100%;
    height: 100%;
    overflow-y: auto;
    padding: var(--spacing-md);
    background: var(--color-bg);
}

/* 关闭按钮 */
.sub-page-close {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 50px;
    height: 50px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.sub-page-close:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    transform: rotate(90deg);
}

.sub-page-close span {
    position: absolute;
    width: 20px;
    height: 2px;
    background: var(--color-text);
    transition: background var(--transition-fast);
}

.sub-page-close:hover span {
    background: var(--color-bg);
}

.sub-page-close span:first-child {
    transform: rotate(45deg);
}

.sub-page-close span:last-child {
    transform: rotate(-45deg);
}

/* 页面头部 */
.sub-page-header {
    max-width: 1400px;
    margin: 0 auto var(--spacing-lg);
    padding-top: var(--spacing-md);
}

.sub-page-nav {
    margin-bottom: var(--spacing-md);
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.back-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.back-icon {
    font-size: 1rem;
    transition: transform var(--transition-fast);
}

.back-btn:hover .back-icon {
    transform: translateX(-4px);
}

.sub-page-title {
    margin-bottom: var(--spacing-xs);
}

.title-line-cn {
    display: block;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 0.1em;
}

.title-line-en {
    display: block;
    font-size: clamp(1rem, 2vw, 1.5rem);
    font-weight: 300;
    color: var(--color-accent);
    letter-spacing: 0.3em;
    margin-top: 0.5rem;
}

.sub-page-subtitle {
    font-size: 1rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.1em;
}

/* 作品展示网格 */
.display-gallery {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 300px;
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-xl);
}

.display-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.display-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.display-item-large {
    grid-column: span 2;
    grid-row: span 2;
}

.display-item-wide {
    grid-column: span 2;
}

.display-item-featured {
    grid-column: span 3;
    grid-row: span 2;
}

.display-image {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.display-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.display-item:hover .display-image img {
    transform: scale(1.05);
}

.display-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.3) 50%, transparent 100%);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-md);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.display-item:hover .display-overlay {
    opacity: 1;
}

.display-info {
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.display-item:hover .display-info {
    transform: translateY(0);
}

.display-brand {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    padding: 0.25rem 0.5rem;
    background: rgba(0, 255, 136, 0.1);
    border-radius: 4px;
}

.display-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.display-item-large .display-name,
.display-item-featured .display-name {
    font-size: 2rem;
}

.display-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xs);
}

.display-item-large .display-desc,
.display-item-featured .display-desc {
    font-size: 1rem;
    max-width: 600px;
}

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

.display-tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    color: var(--color-text-secondary);
}

/* 页面底部 */
.sub-page-footer {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer-note {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

/* 作品卡片悬停提示 */
.work-card-featured {
    position: relative;
    cursor: pointer;
}

.work-hover-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 10;
}

.work-card-featured:hover .work-hover-hint {
    opacity: 1;
}

.work-card-featured:hover .work-image img {
    filter: brightness(0.4);
}

.hint-icon {
    width: 60px;
    height: 60px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-bg);
    animation: pulseHint 2s ease infinite;
}

@keyframes pulseHint {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.4); }
    50% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(0, 255, 136, 0); }
}

.hint-text {
    font-size: 0.875rem;
    color: var(--color-text);
    letter-spacing: 0.1em;
    font-weight: 500;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .display-gallery {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 250px;
    }
    
    .display-item-large {
        grid-column: span 2;
        grid-row: span 2;
    }
    
    .display-item-wide {
        grid-column: span 2;
    }
    
    .display-item-featured {
        grid-column: span 2;
        grid-row: span 2;
    }
}

@media (max-width: 768px) {
    .display-gallery {
        grid-template-columns: 1fr;
        grid-auto-rows: 300px;
    }
    
    .display-item,
    .display-item-large,
    .display-item-wide,
    .display-item-featured {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .sub-page-content {
        padding: var(--spacing-sm);
    }
    
    .sub-page-close {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        width: 40px;
        height: 40px;
    }
    
    .display-overlay {
        opacity: 1;
        background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, transparent 60%);
    }
    
    .display-info {
        transform: translateY(0);
    }
}

/* ============================================
   FOOTER - 底部区域
   ============================================ */
.footer {
    padding: var(--spacing-lg) 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

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

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: 1.25rem;
}

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

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-link {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    position: relative;
    transition: color var(--transition-fast);
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width var(--transition-normal);
}

.footer-link:hover {
    color: var(--color-accent);
}

.footer-link:hover::after {
    width: 100%;
}

.footer-line {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    margin-top: var(--spacing-lg);
    opacity: 0.5;
}

/* ============================================
   AOS ANIMATIONS - 滚动触发动画
   ============================================ */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
    transition-duration: 0.8s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translate(0);
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-down"] {
    transform: translateY(-30px);
}

[data-aos="slide-right"] {
    transform: translateX(-50px);
}

[data-aos="slide-left"] {
    transform: translateX(50px);
}

[data-aos="zoom-in"] {
    transform: scale(0.8);
}

[data-aos="bounce-in"] {
    transform: scale(0.3);
    transition-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Parallax Effect */
.parallax {
    will-change: transform;
}

/* ============================================
   RESPONSIVE DESIGN - 响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .about-visual {
        order: -1;
        margin-bottom: var(--spacing-md);
    }
    
    .visual-grid {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 4rem;
        --spacing-lg: 2rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(10, 10, 10, 0.98);
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-btn {
        display: none;
    }
    
    .hero-title {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }
    
    .works-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .stat-item {
        padding: var(--spacing-sm);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .about-intro-card {
        padding: var(--spacing-sm);
    }
    
    .company-name {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .name-divider {
        display: none;
    }
    
    .about-description-wrapper {
        padding: var(--spacing-sm);
    }
    
    .about-description-main,
    .about-description-sub {
        font-size: 0.9375rem;
    }
    
    .about-tags {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .hero-description {
        padding: var(--spacing-sm);
    }
    
    .btn-large {
        padding: 1rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .section-title {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .work-title {
        font-size: 1.25rem;
    }
}

/* ============================================
   ACCESSIBILITY - 无障碍支持
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    [data-aos] {
        opacity: 1;
        transform: none;
    }
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

/* Selection */
::selection {
    background: var(--color-accent);
    color: var(--color-bg);
}