/* ==========================================
   科技感现代化样式 - ydindex-modern.css
   ========================================== */

/* ==========================================
   基础变量和重置
   ========================================== */
:root {
    /* 颜色系统 */
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-tertiary: #1a1a3a;

    --accent-cyan: #00d4ff;
    --accent-purple: #7c3aed;
    --accent-pink: #ec4899;

    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #64748b;

    /* 玻璃态效果 */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.3);

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
    --gradient-bg: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* 边框圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 容器宽度 */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1200px;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ==========================================
   粒子背景
   ========================================== */
.particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background: var(--gradient-bg);
}

/* CSS粒子动画 */
.particles-bg::before,
.particles-bg::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    animation: float 20s ease-in-out infinite;
}

.particles-bg::before {
    width: 400px;
    height: 400px;
    background: rgba(0, 212, 255, 0.15);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.particles-bg::after {
    width: 500px;
    height: 500px;
    background: rgba(124, 58, 237, 0.1);
    bottom: 20%;
    right: 10%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* ==========================================
   容器和布局
   ========================================== */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
    z-index: 1;
}

/* ==========================================
   导航栏
   ========================================== */
.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(10, 10, 26, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
}

.nav-container.scrolled {
    background: rgba(10, 10, 26, 0.95);
    box-shadow: 0 4px 30px var(--glass-shadow);
}

.nav-inner {
    max-width: var(--container-xl);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.logo-area {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 汉堡菜单 */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

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

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

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

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

/* 导航菜单 */
.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-item {
    position: relative;
}

.nav-item a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 24px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: transform var(--transition-fast);
}

.nav-item:hover::after,
.nav-item.active::after {
    transform: translateX(-50%) scaleX(1);
}

/* ==========================================
   Hero区域
   ========================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    padding-top: 80px;
}

.hero-banner {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--spacing-xl);
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 60px rgba(0, 212, 255, 0.5);
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
}

.btn-outline {
    background: transparent;
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.btn-outline:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

/* Hero装饰元素 */
.hero-decoration {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: var(--accent-cyan);
    top: 20%;
    left: -10%;
    animation: pulse 8s ease-in-out infinite;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-purple);
    bottom: 10%;
    right: -15%;
    animation: pulse 10s ease-in-out infinite reverse;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: var(--accent-pink);
    top: 60%;
    left: 60%;
    animation: pulse 6s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.5;
    }
}

/* ==========================================
   玻璃态卡片
   ========================================== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow:
        0 4px 30px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow:
        0 8px 40px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* ==========================================
   区块标题
   ========================================== */
.section-header {
    margin-bottom: var(--spacing-lg);
}

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

.section-title {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.title-icon {
    width: 8px;
    height: 30px;
    background: var(--gradient-primary);
    border-radius: 4px;
}

.title-line {
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    margin-top: var(--spacing-sm);
}

.section-header.center .title-line {
    margin: var(--spacing-sm) auto 0;
}

/* ==========================================
   公司简介
   ========================================== */
.about-section {
    padding-top: var(--spacing-xl);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-indent: 2em;
}

/* ==========================================
   产品介绍
   ========================================== */
.product-section {
    padding-bottom: var(--spacing-2xl);
}

.product-card {
    margin-top: var(--spacing-lg);
}

.product-logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.product-logo img {
    width: 150px;
    height: auto;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
}

.product-name {
    font-size: 2rem;
    font-weight: 700;
    margin-top: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.detail-block {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-cyan);
}

.detail-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-sm);
}

.detail-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-indent: 2em;
    margin-bottom: var(--spacing-sm);
}

.detail-text:last-child {
    margin-bottom: 0;
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    position: relative;
    background: var(--bg-secondary);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
}

.footer-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 1px;
    background: var(--gradient-primary);
    box-shadow: 0 0 30px var(--accent-cyan);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-link {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer-link:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.footer-info {
    text-align: center;
}

.company-name {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.footer-reg {
    margin-bottom: var(--spacing-md);
}

.icp-link {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

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

.footer-report {
    margin-top: var(--spacing-sm);
}

.report-img {
    max-height: 40px;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.report-img:hover {
    opacity: 1;
}

/* ==========================================
   返回顶部按钮
   ========================================== */
.to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.to-top svg {
    width: 24px;
    height: 24px;
    color: var(--accent-cyan);
}

.to-top:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--accent-cyan);
    transform: translateY(-3px);
}

.to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* ==========================================
   动画效果
   ========================================== */
/* 淡入上升动画 */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

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

/* 滚动触发动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================
   响应式设计 - 移动优先
   ========================================== */

/* 平板及以上 (768px+) */
@media (min-width: 768px) {
    .section {
        padding: var(--spacing-2xl) 0;
    }

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

    .about-content {
        gap: var(--spacing-lg);
    }

    .product-details {
        gap: var(--spacing-xl);
    }

    .footer-links {
        gap: var(--spacing-xl);
    }
}

/* 桌面 (992px+) */
@media (min-width: 992px) {
    .nav-menu {
        display: flex;
    }

    .hamburger {
        display: none;
    }

    .about-text {
        font-size: 1.125rem;
    }

    .detail-text {
        font-size: 1.05rem;
    }
}

/* 移动端菜单样式 */
@media (max-width: 991px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        flex-direction: column;
        background: rgba(10, 10, 26, 0.98);
        backdrop-filter: blur(20px);
        padding: 80px var(--spacing-lg) var(--spacing-lg);
        gap: var(--spacing-sm);
        transition: right var(--transition-normal);
        box-shadow: -5px 0 30px var(--glass-shadow);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-item {
        width: 100%;
    }

    .nav-item a {
        padding: var(--spacing-sm);
        font-size: 1.1rem;
        border-radius: var(--radius-sm);
    }

    .nav-item a:hover {
        background: rgba(255, 255, 255, 0.05);
    }

    .nav-item::after {
        display: none;
    }
}

/* 小屏手机 (< 576px) */
@media (max-width: 575px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

    .glass-card {
        padding: var(--spacing-lg);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .product-logo img {
        width: 120px;
    }

    .product-name {
        font-size: 1.5rem;
    }

    .detail-title {
        font-size: 1.1rem;
    }

    .to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

/* ==========================================
   打印样式
   ========================================== */
@media print {
    .nav-container,
    .to-top,
    .hamburger,
    .particles-bg,
    .hero-decoration {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .glass-card {
        background: #f5f5f5;
        border: 1px solid #ddd;
        box-shadow: none;
    }
}