/* ==================== 基础重置和变量 ==================== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f8fafc;
    --white: #ffffff;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-hero: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7e22ce 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    overflow-x: hidden;
    background: var(--light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.4s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: 10px;
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 60%;
}

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

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: all 0.3s ease;
}

/* ==================== Hero 区域 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
    animation: bgMove 20s ease-in-out infinite;
}

@keyframes bgMove {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

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

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    padding: 0 24px;
    max-width: 900px;
}

.hero-title {
    margin-bottom: 24px;
}

.title-line {
    display: block;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 50%, #fff 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shine 3s linear infinite;
}

@keyframes shine {
    to { background-position: 200% center; }
}

.title-sub {
    display: block;
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    opacity: 0.9;
    letter-spacing: 4px;
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.25rem);
    opacity: 0.8;
    margin-bottom: 40px;
    letter-spacing: 2px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

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

.stat-num {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    color: var(--accent-light);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: 4px;
}

.cta-btn {
    display: inline-block;
    padding: 16px 48px;
    background: var(--gradient-1);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    position: relative;
    overflow: hidden;
}

.cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.cta-btn:hover::before {
    left: 100%;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    opacity: 0.6;
    text-align: center;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    font-size: 0.8rem;
    letter-spacing: 2px;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--white);
    border-bottom: 2px solid var(--white);
    transform: rotate(45deg);
    margin: 10px auto 0;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ==================== 通用区域样式 ==================== */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header.light {
    color: var(--white);
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-header.light .section-tag {
    color: var(--accent-light);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--gradient-1);
    margin: 0 auto;
    border-radius: 2px;
}

.section-header.light .section-line {
    background: var(--accent);
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.about-card {
    background: var(--light);
    padding: 32px;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.about-card h3 {
    font-size: 1.3rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.about-card p {
    color: var(--gray);
    margin-bottom: 8px;
    line-height: 1.8;
}

.about-card.highlight {
    background: var(--gradient-1);
    color: var(--white);
}

.about-card.highlight h3 {
    color: var(--white);
}

.values {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.value-icon {
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

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

.image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.3) 0%, transparent 50%);
}

/* ==================== 产品中心 ==================== */
.products {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.products::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.product-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px 32px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

.product-image {
    width: 100%;
    height: 200px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.1);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-card h3 {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.product-card p {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-1);
    color: var(--white);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 产品展示区域 */
.product-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 48px 0;
}

.showcase-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    height: 280px;
    box-shadow: var(--shadow-lg);
}

.showcase-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.showcase-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
    color: var(--white);
}

.showcase-caption h4 {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.showcase-caption p {
    font-size: 0.9rem;
    opacity: 0.8;
}

.market-info {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.market-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: var(--white);
    font-weight: 500;
}

.market-flag {
    font-size: 1.5rem;
}

/* ==================== 工厂实力 ==================== */
.factory {
    background: var(--light);
}

.equipment-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.eq-stat {
    background: var(--white);
    padding: 40px 24px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.eq-stat:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.eq-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.eq-num {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
}

.eq-num span {
    font-size: 1.2rem;
    font-weight: 500;
    margin-left: 4px;
}

.eq-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 12px 0 4px;
}

.eq-desc {
    color: var(--gray);
    font-size: 0.9rem;
}

/* 工厂图片展示 */
.factory-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 240px;
    gap: 16px;
}

.gallery-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    cursor: pointer;
}

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

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
    color: var(--white);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s ease;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
    opacity: 1;
}

.gallery-caption h4 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.gallery-caption p {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ==================== 联系我们 ==================== */
.contact {
    background: var(--dark);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 300px;
    background: linear-gradient(to top, rgba(102, 126, 234, 0.1) 0%, transparent 100%);
    pointer-events: none;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: stretch;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.contact-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(10px);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.contact-card h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.contact-card p {
    color: var(--gray-light);
    line-height: 1.7;
}

.contact-card .phone {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-light);
}

.contact-map {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
}

.map-container {
    width: 100%;
    height: 350px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.03);
    position: relative;
}

.map-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-light);
    font-size: 0.95rem;
    z-index: 1;
}

.map-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.map-address-text {
    color: var(--gray-light);
    font-size: 0.9rem;
}

.map-btn {
    display: inline-block;
    padding: 12px 32px;
    background: var(--gradient-1);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    touch-action: manipulation;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.map-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--dark-light);
    padding: 48px 0;
    text-align: center;
    color: var(--gray-light);
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.footer-copy {
    margin-bottom: 8px;
}

.footer-address {
    font-size: 0.9rem;
    opacity: 0.7;
}

.footer-icp {
    margin-top: 12px;
    font-size: 0.85rem;
}

.footer-icp a {
    color: var(--gray-light);
    text-decoration: none;
    opacity: 0.7;
    transition: color 0.3s, opacity 0.3s;
}

.footer-icp a:hover {
    color: var(--white);
    opacity: 1;
}

/* ==================== 动画类 ==================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 968px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .factory-gallery {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 200px;
    }
    
    .gallery-item.large {
        grid-column: span 2;
        grid-row: span 2;
    }
    
    .product-showcase {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 8px;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .factory-gallery {
        grid-template-columns: 1fr;
        grid-auto-rows: 220px;
    }
    
    .gallery-item.large {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .product-showcase {
        grid-template-columns: 1fr;
    }
    
    .showcase-item {
        height: 220px;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .equipment-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .values {
        flex-direction: column;
        gap: 12px;
    }
    
    .factory-gallery {
        grid-auto-rows: 180px;
    }
}