/* ========================================
   智时科技 - 电子纸时钟公司网站样式
   设计风格：科技感、未来感、简洁
   ======================================== */

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

:root {
    /* 主色调 - 科技蓝 */
    --primary: #00d4ff;
    --primary-dark: #00a8cc;
    --primary-light: #4de8ff;
    --primary-glow: rgba(0, 212, 255, 0.3);
    
    /* 强调色 - 电子绿 */
    --accent: #00ff88;
    --accent-dark: #00cc6a;
    
    /* 背景色 - 深空黑 */
    --bg-dark: #0a0e17;
    --bg-darker: #050810;
    --bg-card: #0f1520;
    --bg-lighter: #151c28;
    
    /* 文字色 */
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #5a6a7a;
    
    /* 边框 */
    --border: rgba(0, 212, 255, 0.15);
    --border-light: rgba(255, 255, 255, 0.08);
    
    /* 字体 */
    --font-tech: 'Orbitron', sans-serif;
    --font-sans: 'Noto Sans SC', sans-serif;
    
    /* 间距 */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    
    /* 过渡 */
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

/* 粒子背景 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 255, 136, 0.05) 0%, transparent 50%);
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    position: relative;
    z-index: 1;
}

/* ========================================
   导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 8px;
}

.logo-icon i {
    font-size: 1.2rem;
    color: var(--bg-dark);
}

.logo-text {
    font-family: var(--font-tech);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.logo-sub {
    font-size: 0.8rem;
    opacity: 0.7;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    position: relative;
    transition: var(--transition);
}

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

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

/* ========================================
   Hero 主视觉区
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.5rem 1rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--primary);
    font-size: 0.85rem;
    margin-bottom: var(--space-md);
}

.pulse {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    margin-bottom: var(--space-md);
}

.title-line {
    display: block;
    font-family: var(--font-tech);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: 0.05em;
}

.title-line.gradient {
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-stats {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.stat {
    text-align: center;
}

.stat-value {
    font-family: var(--font-tech);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--bg-dark);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--primary-glow);
}

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

.btn-outline:hover {
    background: rgba(0, 212, 255, 0.1);
}

/* 时钟展示 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.clock-showcase {
    position: relative;
}

.clock-frame {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-md);
    position: relative;
}

.clock-frame.large {
    width: 400px;
}

.e-ink-screen {
    background: #f5f5f0;
    border-radius: 8px;
    padding: var(--space-md);
    position: relative;
    overflow: hidden;
}

.clock-display {
    text-align: center;
    font-family: var(--font-tech);
    color: #1a1a1a;
}

.clock-display .time {
    font-size: 4rem;
    font-weight: 700;
    display: block;
    letter-spacing: 0.1em;
}

.clock-display .date {
    font-size: 1.2rem;
    display: block;
    margin-top: 0.5rem;
}

.clock-display .weekday {
    font-size: 1rem;
    opacity: 0.7;
    display: block;
    margin-top: 0.3rem;
}

.clock-label {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 0.85rem;
    white-space: nowrap;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease infinite;
}

@keyframes scroll {
    0%, 100% { top: 6px; opacity: 1; }
    50% { top: 18px; opacity: 0.3; }
}

/* ========================================
   通用区块样式
   ======================================== */
section {
    padding: var(--space-xl) 0;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.section-tag {
    display: inline-block;
    color: var(--primary);
    font-family: var(--font-tech);
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-tech);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: 0.05em;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
}

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

.product-categories {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.category-btn {
    padding: 0.6rem 1.2rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.category-btn:hover,
.category-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--bg-dark);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.product-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.product-image {
    position: relative;
    padding: var(--space-md);
    background: var(--bg-lighter);
}

.e-ink-demo {
    background: #f5f5f0;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-family: var(--font-tech);
    color: #1a1a1a;
}

.e-ink-demo.small {
    width: 80px;
    height: 80px;
}

.e-ink-demo.medium {
    width: 120px;
    height: 80px;
}

.e-ink-demo.large-demo {
    width: 160px;
    height: 100px;
}

.e-ink-demo.xlarge {
    width: 180px;
    height: 120px;
}

.e-ink-demo.xxlarge {
    width: 200px;
    height: 130px;
}

.e-ink-demo.huge {
    width: 220px;
    height: 140px;
}

.e-ink-demo.giant {
    width: 240px;
    height: 150px;
}

.e-ink-demo.mega {
    width: 260px;
    height: 160px;
}

.demo-time {
    font-size: 1.5rem;
    font-weight: 700;
}

.e-ink-demo.large-demo .demo-time,
.e-ink-demo.xlarge .demo-time {
    font-size: 2rem;
}

.e-ink-demo.xxlarge .demo-time,
.e-ink-demo.huge .demo-time,
.e-ink-demo.giant .demo-time,
.e-ink-demo.mega .demo-time {
    font-size: 2.5rem;
}

.demo-date {
    font-size: 0.7rem;
    margin-top: 0.3rem;
}

.product-badge {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: 0.3rem 0.8rem;
    background: var(--primary);
    color: var(--bg-dark);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
}

.product-info {
    padding: var(--space-md);
}

.product-info h3 {
    font-family: var(--font-tech);
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
    color: var(--primary);
}

.product-size {
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: var(--space-xs);
}

.product-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.product-features {
    list-style: none;
    margin-bottom: var(--space-sm);
}

.product-features li {
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.3rem;
}

.product-features li i {
    color: var(--accent);
    font-size: 0.7rem;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 0.3rem;
}

.product-price .price {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.product-price .unit {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ========================================
   技术优势
   ======================================== */
.technology {
    background: var(--bg-dark);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-md);
    transition: var(--transition);
}

.tech-card:hover {
    border-color: var(--primary);
}

.tech-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 255, 136, 0.1));
    border-radius: 12px;
    margin-bottom: var(--space-sm);
}

.tech-icon i {
    font-size: 1.5rem;
    color: var(--primary);
}

.tech-card h3 {
    font-family: var(--font-tech);
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.tech-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.tech-spec {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-light);
}

.tech-spec .label {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.tech-spec .value {
    font-family: var(--font-tech);
    color: var(--accent);
    font-size: 1rem;
    font-weight: 600;
}

/* ========================================
   产地优势
   ======================================== */
.origin {
    background: var(--bg-darker);
}

.origin-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.origin-map {
    position: relative;
}

.map-placeholder {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-lg);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
}

.location-pin {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.location-pin i {
    font-size: 3rem;
    color: var(--primary);
    animation: bounce 2s ease infinite;
}

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

.location-pin span {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    color: var(--primary);
}

.map-info {
    display: flex;
    gap: var(--space-md);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-item i {
    color: var(--accent);
}

.origin-content h3 {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--primary);
}

.origin-text {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.8;
}

.origin-advantages {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.advantage {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--bg-card);
    border-radius: 8px;
}

.adv-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 8px;
    flex-shrink: 0;
}

.adv-icon i {
    font-size: 1.2rem;
    color: var(--bg-dark);
}

.adv-content h4 {
    font-size: 1rem;
    margin-bottom: 0.3rem;
    color: var(--text-primary);
}

.adv-content p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* 池州风光 */
.scenery {
    margin-top: var(--space-lg);
}

.scenery-title {
    font-family: var(--font-tech);
    font-size: 1.3rem;
    text-align: center;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

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

.scenery-item {
    text-align: center;
}

.scenery-placeholder {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-xs);
    transition: var(--transition);
}

.scenery-placeholder:hover {
    border-color: var(--primary);
}

.scenery-placeholder i {
    font-size: 2rem;
    color: var(--accent);
}

.scenery-placeholder span {
    color: var(--text-primary);
    font-size: 0.9rem;
}

.scenery-item p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* 数据展示 */
.origin-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-md);
    text-align: center;
}

.stat-card .stat-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
}

.stat-card .stat-icon i {
    font-size: 1.2rem;
    color: var(--bg-dark);
}

.stat-card .stat-value {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    color: var(--primary);
    display: block;
}

.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ========================================
   关于我们
   ======================================== */
.about {
    background: var(--bg-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.about-milestones {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.milestone {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm);
    background: var(--bg-card);
    border-radius: 8px;
    border-left: 3px solid var(--primary);
}

.milestone .year {
    font-family: var(--font-tech);
    font-size: 1.2rem;
    color: var(--primary);
    min-width: 60px;
}

.milestone .event {
    color: var(--text-secondary);
}

/* ========================================
   联系我们
   ======================================== */
.contact {
    background: var(--bg-darker);
}

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

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-md);
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--primary);
}

.contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 255, 136, 0.1));
    border-radius: 50%;
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--primary);
}

.contact-card h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.contact-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========================================
   底部
   ======================================== */
.footer {
    background: var(--bg-darker);
}

.footer-main {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-lg);
}

.footer-slogan {
    color: var(--primary);
    font-size: 1rem;
    margin-top: var(--space-sm);
}

.footer-origin {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links h4 {
    font-family: var(--font-tech);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
    color: var(--primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

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

.footer-bottom {
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-visual {
        display: none;
    }
    
    .origin-intro {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: var(--space-md);
        border-bottom: 1px solid var(--border);
    }
    
    .nav.active {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-stats {
        flex-wrap: wrap;
    }
    
    .scenery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .origin-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .scenery-grid {
        grid-template-columns: 1fr;
    }
    
    .origin-stats {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}