/* ========================================
   蓝鲸售货机 - 现代化蓝色科技主题
   版本: 3.0
   更新日期: 2026-05-05
======================================== */

/* 颜色变量 */
:root {
    --primary: #0066ff;
    --primary-dark: #0050c8;
    --primary-light: #4d94ff;
    --accent: #00d4ff;
    --accent-light: #33ddff;
    --dark: #0a1628;
    --dark-secondary: #111c35;
    --dark-tertiary: #1a2744;
    --text-primary: #ffffff;
    --text-secondary: #b0bdd9;
    --text-muted: #6b7ba3;
    --gradient-primary: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
    --gradient-primary-reverse: linear-gradient(135deg, #00d4ff 0%, #0066ff 100%);
    --gradient-dark: linear-gradient(180deg, #0a1628 0%, #111c35 100%);
    --gradient-glow: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.3), transparent);
    --shadow-sm: 0 2px 8px rgba(0, 102, 255, 0.08);
    --shadow-md: 0 8px 30px rgba(0, 102, 255, 0.12);
    --shadow-lg: 0 20px 60px rgba(0, 102, 255, 0.15);
    --shadow-glow: 0 0 30px rgba(0, 102, 255, 0.3);
    --shadow-glow-accent: 0 0 30px rgba(0, 212, 255, 0.3);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
    overflow-x: hidden;
}

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

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 背景粒子容器 */
#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0.3;
    animation: float-particle 15s infinite linear;
}

/* 光晕效果 */
.glow-effect {
    position: relative;
}

.glow-effect::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120%;
    height: 120%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(0, 102, 255, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.glow-effect:hover::after {
    opacity: 1;
}

/* 渐变流动背景 */
.gradient-flow-bg {
    background: linear-gradient(-45deg, #0a1628, #111c35, #1a2744, #0d1b33);
    background-size: 400% 400%;
    animation: gradientFlow 15s ease infinite;
}

@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 光标跟随效果 */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease;
}

/* ========================================
   Header - 现代化导航
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
    transition: var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 30px rgba(0, 102, 255, 0.1);
}

.header-main {
    padding: 12px 0;
    transition: padding 0.3s ease;
}

.header.scrolled .header-main {
    padding: 8px 0;
}

.header-main .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    display: inline-block;
}

.logo-text h1 {
    font-size: 24px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition-fast);
}

.header.scrolled .logo-text h1 {
    font-size: 20px;
}

.logo-text span {
    font-size: 11px;
    color: var(--text-muted);
    display: block;
    margin-top: -2px;
    transition: var(--transition-fast);
}

.header.scrolled .logo-text span {
    font-size: 10px;
}

.nav {
    display: flex;
    list-style: none;
    gap: 6px;
    align-items: center;
}

.nav li {
    position: relative;
}

.nav a {
    display: block;
    padding: 10px 18px;
    font-size: 15px;
    color: #333;
    font-weight: 500;
    border-radius: 10px;
    transition: var(--transition-fast);
    position: relative;
}

.nav a::before {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: transform 0.3s ease;
}

.nav a:hover::before,
.nav li.active a::before {
    transform: translateX(-50%) scaleX(1);
}

.nav a:hover,
.nav li.active a {
    color: var(--primary);
    background: rgba(0, 102, 255, 0.06);
}

.nav-cta .btn-sm {
    padding: 8px 20px;
    font-size: 14px;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.25);
}

.nav-cta .btn-sm:hover {
    box-shadow: 0 6px 24px rgba(0, 102, 255, 0.35);
    transform: translateY(-2px);
}

.nav-cta .btn-sm::before {
    display: none;
}

/* 下拉菜单 */
.subnav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    min-width: 180px;
    z-index: 100;
    padding: 8px;
}

.nav li:hover .subnav {
    display: block;
    animation: fadeInDown 0.3s ease;
}

.subnav a {
    padding: 12px 16px;
    border-radius: 8px;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    width: 44px;
    height: 44px;
    cursor: pointer;
    position: relative;
    padding: 0;
}

.mobile-menu-btn span {
    display: block;
    position: absolute;
    left: 12px;
    width: 20px;
    height: 2px;
    background: #333;
    border-radius: 2px;
    transition: var(--transition-fast);
}

.mobile-menu-btn span:nth-child(1) { top: 14px; }
.mobile-menu-btn span:nth-child(2) { top: 21px; }
.mobile-menu-btn span:nth-child(3) { top: 28px; }

.mobile-menu-btn.active span:nth-child(1) {
    top: 21px;
    transform: rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.mobile-menu-btn.active span:nth-child(3) {
    top: 21px;
    transform: rotate(-45deg);
}

/* ========================================
   Hero Banner
======================================== */
.banner {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

.banner-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s cubic-bezier(0.4, 0, 0.2, 1), transform 8s ease-out;
    transform: scale(1.05);
}

.banner-slide.active {
    opacity: 1;
    transform: scale(1);
}

.banner-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.35) 0%, rgba(0, 212, 255, 0.2) 50%, rgba(0, 102, 255, 0.15) 100%);
}

.banner-slide::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 102, 255, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    animation: bannerPulse 8s ease-in-out infinite;
}

@keyframes bannerPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* 动态网格背景 */
.banner-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 102, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.1) 1px, transparent 1px);
    background-size: 100px 100px;
    z-index: 1;
    animation: gridMove 20s linear infinite;
}

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

.banner-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    max-width: 900px;
    padding: 0 20px;
    z-index: 2;
}

.banner-content h2 {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: 24px;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUpBounce 1s ease forwards;
    animation-delay: 0.3s;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    background: linear-gradient(90deg, #ffffff, #00d4ff, #ffffff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUpBounce 1s ease forwards 0.3s, textShine 3s linear infinite 1s;
}

@keyframes textShine {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.banner-content p {
    font-size: 22px;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUpBounce 1s ease forwards;
    animation-delay: 0.6s;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* 浮动装饰元素 */
.banner-decoration {
    position: absolute;
    z-index: 1;
}

.banner-decoration.circle-1 {
    top: 20%;
    left: 10%;
    width: 100px;
    height: 100px;
    border: 2px solid rgba(0, 212, 255, 0.4);
    border-radius: 50%;
    animation: floatRotate 12s linear infinite;
}

.banner-decoration.circle-2 {
    bottom: 30%;
    right: 15%;
    width: 150px;
    height: 150px;
    border: 2px solid rgba(0, 102, 255, 0.3);
    border-radius: 50%;
    animation: floatRotate 15s linear infinite reverse;
}

.banner-decoration.line-1 {
    top: 40%;
    right: 25%;
    width: 2px;
    height: 120px;
    background: linear-gradient(to bottom, transparent, rgba(0, 212, 255, 0.6), transparent);
    animation: floatUp 6s ease-in-out infinite;
}

@keyframes floatRotate {
    0% { transform: rotate(0deg) translate(0, 0); }
    25% { transform: rotate(90deg) translate(10px, -10px); }
    50% { transform: rotate(180deg) translate(0, 0); }
    75% { transform: rotate(270deg) translate(-10px, 10px); }
    100% { transform: rotate(360deg) translate(0, 0); }
}

@keyframes floatUp {
    0%, 100% { transform: translateY(0); opacity: 0.5; }
    50% { transform: translateY(-30px); opacity: 1; }
}

/* 轮播控制点 */
.banner-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 2;
}

.banner-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition-fast);
}

.banner-dots .dot.active {
    background: #fff;
    transform: scale(1.2);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 16px 36px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition-normal);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.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;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 36px rgba(0, 102, 255, 0.4);
    color: #fff;
}

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

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.8);
    box-shadow: none;
    margin-left: 16px;
}

.btn-outline:hover {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

/* 滚动向下指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    animation: bounce 2s infinite;
}

.scroll-indicator .mouse {
    width: 26px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.7);
    border-radius: 13px;
    position: relative;
}

.scroll-indicator .mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: #fff;
    border-radius: 2px;
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% { top: 8px; opacity: 1; }
    100% { top: 24px; opacity: 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); }
}

/* ========================================
   Section通用样式
======================================== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: #0a1628;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-title p {
    color: #6b7ba3;
    font-size: 18px;
    margin-top: 24px;
}

/* 滚动动画类 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }

/* ========================================
   Features Section
======================================== */
.features {
    background: var(--gradient-dark);
    color: #fff;
}

.features .section-title h2 {
    color: #fff;
}

.features .section-title h2::after {
    background: var(--accent);
}

.features .section-title p {
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 48px 28px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.feature-item:hover::before {
    opacity: 1;
}

.feature-item::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.feature-item:hover::after {
    opacity: 1;
}

.feature-item:hover {
    transform: translateY(-12px);
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--accent);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2), 0 0 40px rgba(0, 102, 255, 0.15);
}

.feature-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-primary);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    font-size: 40px;
    color: #fff;
    transition: var(--transition-normal);
    position: relative;
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.3);
}

.feature-icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: var(--gradient-primary);
    border-radius: 24px;
    opacity: 0;
    filter: blur(10px);
    transition: opacity 0.3s ease;
}

.feature-item:hover .feature-icon::before {
    opacity: 0.5;
}

.feature-item:hover .feature-icon {
    transform: rotate(10deg) scale(1.15);
    box-shadow: 0 12px 40px rgba(0, 102, 255, 0.4);
}

.feature-item h3 {
    font-size: 22px;
    margin-bottom: 16px;
    color: #fff;
    position: relative;
}

.feature-item h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.3s ease, width 0.3s ease;
}

.feature-item:hover h3::after {
    opacity: 1;
    width: 60px;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

/* ========================================
   Products Grid
======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
}

.product-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(0, 102, 255, 0.05) 50%, transparent 100%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.product-card:hover {
    transform: translateY(-16px) rotateX(2deg);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 102, 255, 0.1);
}

.product-card:hover::before {
    opacity: 1;
}

.product-card:hover::after {
    opacity: 1;
}

.product-image {
    height: 240px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e0e8ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
}

.product-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.product-card:hover .product-image::before {
    transform: translateX(100%);
}

.product-card:hover .product-image {
    background: linear-gradient(135deg, #e0e8ff 0%, #d0d8ff 100%);
}

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

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

.category-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
}

.category-icon {
    font-size: 80px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.product-info {
    padding: 28px;
    position: relative;
}

.product-info h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #0a1628;
    transition: var(--transition-fast);
}

.product-card:hover .product-info h3 {
    color: var(--primary);
}

.product-info .model {
    color: var(--primary);
    font-size: 14px;
    margin-bottom: 14px;
    font-weight: 500;
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 102, 255, 0.08);
    border-radius: 8px;
}

.product-info .price {
    font-size: 26px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.product-info .price::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.product-card:hover .product-info .price::after {
    width: 100%;
}

.product-info .btn {
    width: 100%;
    padding: 14px;
    font-size: 15px;
    border-radius: 12px;
    text-align: center;
    position: relative;
    z-index: 1;
}

/* ========================================
   About Section
======================================== */
.about-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid var(--primary);
    border-radius: 24px;
    z-index: -1;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.about-image-placeholder {
    width: 100%;
    height: 100%;
    min-height: 400px;
    background: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.about-image-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: floatRotate 20s linear infinite;
}

.about-icon {
    font-size: 100px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.2));
}

.about-image-placeholder p {
    font-size: 24px;
    font-weight: 700;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.about-content h3 {
    font-size: 32px;
    margin-bottom: 24px;
    color: #0a1628;
    position: relative;
    padding-left: 20px;
}

.about-content h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.about-content p {
    color: #6b7ba3;
    margin-bottom: 20px;
    line-height: 1.8;
    font-size: 16px;
}

.about-content .btn {
    margin-top: 16px;
}

/* ========================================
   News Grid
======================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.news-image {
    height: 200px;
    overflow: hidden;
}

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

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-content {
    padding: 24px;
}

.news-date {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 12px;
}

.news-content h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #0a1628;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-content p {
    color: #6b7ba3;
    font-size: 14px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
}

.news-content a {
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.news-content a::after {
    content: '→';
    transition: var(--transition-fast);
}

.news-content a:hover::after {
    transform: translateX(4px);
}

/* ========================================
   Contact Section (首页)
======================================== */
.contact-section {
    background: var(--gradient-dark);
    color: #fff;
}

.contact-section .section-title h2 {
    color: #fff;
}

.contact-section .section-title p {
    color: var(--text-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.contact-item {
    text-align: center;
    padding: 32px 20px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.contact-item:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent);
}

.contact-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.contact-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #fff;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   Footer
======================================== */
.footer {
    background: #0a1628;
    color: #fff;
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}

.footer-about h3 {
    font-size: 24px;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-about p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 14px;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-icon:hover {
    background: var(--gradient-primary);
    color: #fff;
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
}

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

.footer-links h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #fff;
    position: relative;
    padding-bottom: 12px;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 14px;
    display: inline-block;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent);
    transform: translateX(6px);
}

.footer-contact .contact-list {
    list-style: none;
}

.footer-contact .contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-contact .contact-list li svg {
    width: 20px;
    height: 20px;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    position: relative;
    z-index: 1;
}

.footer-bottom-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-links-bottom {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0;
}

.footer-links-bottom a {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

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

.divider {
    color: rgba(255, 255, 255, 0.2);
}

.footer-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    pointer-events: none;
}

/* ========================================
   Page Header (内页顶部)
======================================== */
.page-header {
    background: var(--gradient-dark);
    color: #fff;
    padding: 160px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 50%);
    animation: float 20s linear infinite;
}

.page-header h2 {
    font-size: 42px;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 18px;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
}

/* Breadcrumb */
.breadcrumb {
    padding: 20px 0;
    font-size: 14px;
    color: var(--text-muted);
    background: #fff;
    border-bottom: 1px solid #f0f0f0;
}

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

.breadcrumb span {
    margin: 0 8px;
    color: #ccc;
}

/* ========================================
   Products Page
======================================== */
.products-page {
    padding: 60px 0 100px;
}

.products-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 24px;
    background: #fff;
    border: 1px solid #e0e8ff;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 14px;
    font-weight: 500;
    color: #6b7ba3;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.25);
}

.products-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

/* Product Detail */
.product-detail {
    padding: 60px 0 100px;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.product-gallery {
    position: sticky;
    top: 100px;
}

.product-main-image {
    height: 450px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e0e8ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 16px;
}

.product-main-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.product-detail-info {
    padding: 20px 0;
}

.product-detail-info h1 {
    font-size: 32px;
    margin-bottom: 16px;
    color: #0a1628;
}

.product-detail-info .model {
    color: var(--primary);
    font-size: 15px;
    margin-bottom: 24px;
    font-weight: 500;
}

.product-detail-info .price {
    font-size: 36px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 32px;
}

.product-detail-info .description {
    color: #6b7ba3;
    line-height: 1.8;
    margin-bottom: 32px;
}

.product-specs {
    background: linear-gradient(135deg, #f0f4ff 0%, #e8edff 100%);
    padding: 28px;
    border-radius: 16px;
    margin-bottom: 32px;
}

.product-specs h3 {
    font-size: 18px;
    margin-bottom: 16px;
    color: #0a1628;
}

.product-specs p {
    color: #6b7ba3;
    line-height: 1.8;
    white-space: pre-line;
}

/* ========================================
   Contact Page
======================================== */
.contact-page {
    padding: 60px 0 100px;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 32px;
    color: #0a1628;
}

.contact-info-map {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.contact-info-map h3 {
    font-size: 24px;
    margin-bottom: 32px;
    color: #0a1628;
}

.contact-details p {
    margin-bottom: 16px;
    color: #6b7ba3;
    font-size: 15px;
    display: flex;
    gap: 12px;
}

.contact-details p strong {
    color: #0a1628;
    min-width: 80px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #0a1628;
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e0e8ff;
    border-radius: 12px;
    font-size: 14px;
    font-family: inherit;
    background: #f8fafc;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.form-group textarea {
    height: 140px;
    resize: vertical;
}

.map-container {
    margin-top: 32px;
    height: 280px;
    border-radius: 16px;
    overflow: hidden;
    background: #f0f4ff;
}

/* ========================================
   About Page
======================================== */
.about-full {
    padding: 80px 0;
}

.about-content-full {
    max-width: 900px;
    margin: 0 auto;
}

.about-content-full h3 {
    font-size: 28px;
    margin-bottom: 24px;
    color: #0a1628;
    position: relative;
    padding-left: 16px;
}

.about-content-full h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.about-content-full p {
    color: #6b7ba3;
    line-height: 1.9;
    margin-bottom: 24px;
    font-size: 16px;
}

.about-content-full img {
    border-radius: 12px;
    margin: 20px 0;
}

.team-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8edff 100%);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.team-member {
    text-align: center;
}

.team-photo {
    width: 160px;
    height: 160px;
    background: linear-gradient(135deg, #e0e8ff 0%, #d0d8ff 100%);
    border-radius: 50%;
    margin: 0 auto 20px;
    overflow: hidden;
    border: 4px solid #fff;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.team-member:hover .team-photo {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.team-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-member h4 {
    font-size: 18px;
    margin-bottom: 4px;
    color: #0a1628;
}

.team-member p {
    color: var(--text-muted);
    font-size: 14px;
}

/* ========================================
   News Page
======================================== */
.news-page {
    padding: 60px 0 100px;
}

.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-item {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
    transition: var(--transition-normal);
}

.news-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.news-item-image {
    height: 320px;
    overflow: hidden;
}

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

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

.news-item-content {
    padding: 32px;
}

.news-item-content h2 {
    font-size: 24px;
    margin-bottom: 16px;
    color: #0a1628;
}

.news-item-content .meta {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 24px;
}

.news-item-content p {
    color: #6b7ba3;
    line-height: 1.8;
}

/* ========================================
   Admin Styles
======================================== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: var(--dark);
    color: #fff;
    padding: 24px 0;
    z-index: 100;
}

.admin-sidebar h2 {
    font-size: 18px;
    padding: 0 24px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 24px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.admin-sidebar nav a {
    display: block;
    padding: 14px 24px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    border-left: 3px solid transparent;
}

.admin-sidebar nav a:hover,
.admin-sidebar nav a.active {
    background: rgba(0, 102, 255, 0.1);
    color: #fff;
    border-left-color: var(--primary);
}

.admin-content {
    margin-left: 260px;
    padding: 24px;
    background: #f8fafc;
    min-height: 100vh;
}

.admin-header {
    background: #fff;
    padding: 24px 32px;
    border-radius: 16px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-header h1 {
    font-size: 24px;
    color: #0a1628;
}

.admin-table {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.admin-table table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid #f0f4ff;
}

.admin-table th {
    background: #f8fafc;
    font-weight: 600;
    color: #0a1628;
    font-size: 14px;
}

.admin-table tr:hover {
    background: #f8fafc;
}

.alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #e8f5e9;
    color: #2e7d32;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
}

.pagination a,
.pagination span {
    padding: 10px 16px;
    background: #fff;
    border: 1px solid #e0e8ff;
    border-radius: 10px;
    color: #6b7ba3;
    transition: var(--transition-fast);
}

.pagination a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.pagination .active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

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

@keyframes fadeInUpBounce {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    60% {
        opacity: 1;
        transform: translateY(-10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes float-particle {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

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

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg) scale(0.5);
    }
    to {
        opacity: 1;
        transform: rotate(0) scale(1);
    }
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 淡入动画类 */
.fade-in {
    opacity: 0;
    transition: opacity 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
}

/* 滑动动画类 */
.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: transform 0.6s ease, opacity 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: transform 0.6s ease, opacity 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ========================================
   Responsive Design
======================================== */

/* 大屏桌面 1920px+ */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
    
    .banner-content h2 {
        font-size: 72px;
    }
    
    .banner-content p {
        font-size: 24px;
    }
    
    .section {
        padding: 120px 0;
    }
}

/* 标准桌面 1200px - 1919px */
@media (max-width: 1399px) {
    .products-grid,
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

/* 小屏桌面/平板横屏 992px - 1199px */
@media (max-width: 1199px) {
    .products-grid,
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .banner-content h2 {
        font-size: 52px;
    }
    
    .banner-content p {
        font-size: 20px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

/* 平板竖屏 768px - 991px */
@media (max-width: 991px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-radius: 0 0 16px 16px;
        gap: 8px;
    }
    
    .nav.show {
        display: flex;
        animation: slideDown 0.3s ease;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav li {
        width: 100%;
    }
    
    .nav a {
        padding: 12px 16px;
        width: 100%;
        text-align: center;
    }
    
    .nav a::before {
        display: none;
    }
    
    .nav-cta {
        margin-top: 8px;
    }
    
    .nav-cta .btn-sm {
        width: 100%;
        text-align: center;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .banner-content h2 {
        font-size: 44px;
    }
    
    .banner-content p {
        font-size: 18px;
    }
    
    .about-preview,
    .product-detail-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image::before {
        display: none;
    }
    
    .products-grid,
    .features-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section {
        padding: 80px 0;
    }
    
    .section-title h2 {
        font-size: 32px;
    }
}

/* 手机横屏/大手机 576px - 767px */
@media (max-width: 767px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        margin-bottom: 40px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .section-title p {
        font-size: 16px;
    }
    
    .banner {
        height: 80vh;
        min-height: 500px;
    }
    
    .banner-content h2 {
        font-size: 36px;
    }
    
    .banner-content p {
        font-size: 16px;
        margin-bottom: 32px;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    .banner-decoration {
        display: none;
    }
    
    .products-grid,
    .features-grid,
    .news-grid,
    .products-list,
    .contact-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        gap: 20px;
    }
    
    .feature-item {
        padding: 32px 24px;
    }
    
    .product-card:hover {
        transform: translateY(-8px);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .page-header {
        padding: 120px 0 40px;
    }
    
    .page-header h2 {
        font-size: 28px;
    }
    
    .product-main-image {
        height: 350px;
    }
    
    .product-detail-info h1 {
        font-size: 28px;
    }
    
    .contact-form,
    .contact-info-map {
        padding: 32px 24px;
    }
}

/* 小手机 480px 以下 */
@media (max-width: 479px) {
    .container {
        padding: 0 16px;
    }
    
    .header-main {
        padding: 10px 0;
    }
    
    .logo-text h1 {
        font-size: 20px;
    }
    
    .logo-text span {
        font-size: 10px;
    }
    
    .banner {
        height: 70vh;
        min-height: 450px;
    }
    
    .banner-content h2 {
        font-size: 28px;
        margin-bottom: 16px;
    }
    
    .banner-content p {
        font-size: 14px;
        margin-bottom: 24px;
    }
    
    .btn {
        padding: 12px 28px;
        font-size: 14px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .section-title p {
        font-size: 14px;
    }
    
    .product-info {
        padding: 20px;
    }
    
    .product-info h3 {
        font-size: 18px;
    }
    
    .product-info .price {
        font-size: 22px;
    }
    
    .product-main-image {
        height: 280px;
    }
    
    .product-detail-info h1 {
        font-size: 24px;
    }
    
    .product-detail-info .price {
        font-size: 28px;
    }
    
    .page-header {
        padding: 100px 0 30px;
    }
    
    .page-header h2 {
        font-size: 24px;
    }
    
    .page-header p {
        font-size: 14px;
    }
    
    .footer {
        padding: 60px 0 20px;
    }
    
    .footer-about h3 {
        font-size: 20px;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: 12px;
    }
}

/* 超小手机 375px 以下 */
@media (max-width: 374px) {
    .container {
        padding: 0 12px;
    }
    
    .banner-content h2 {
        font-size: 24px;
    }
    
    .banner-content p {
        font-size: 13px;
    }
    
    .section-title h2 {
        font-size: 22px;
    }
    
    .feature-item {
        padding: 24px 16px;
    }
    
    .feature-icon {
        width: 70px;
        height: 70px;
        font-size: 32px;
    }
}

/* 横屏优化 */
@media (max-width: 991px) and (orientation: landscape) {
    .banner {
        height: auto;
        min-height: 400px;
        padding: 120px 0 60px;
    }
    
    .banner-content {
        position: relative;
        top: auto;
        left: auto;
        transform: none;
        padding: 40px 20px;
    }
    
    .banner-content h2 {
        font-size: 36px;
    }
    
    .scroll-indicator {
        display: none;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .product-image,
    .news-image {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .particle {
        display: none;
    }
    
    .cursor-glow {
        display: none;
    }
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .banner,
    .mobile-menu-btn,
    .cursor-glow,
    #particles-container,
    .btn {
        display: none !important;
    }
    
    body {
        background: #fff;
        color: #000;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
}