/* ===== CSS变量定义 ===== */
:root {
    /* 配色方案 */
    --primary-blue: #1A6DFF;
    --primary-blue-dark: #0D4FCC;
    --primary-blue-light: #4D8FFF;
    --accent-orange: #FF6B35;
    --accent-orange-dark: #E5512A;
    --bg-gray: #F5F7FA;
    --text-dark: #333333;
    --text-medium: #666666;
    --text-light: #999999;
    --white: #FFFFFF;
    --card-bg: #FFFFFF;

    /* 科技风格扩展色 */
    --cyber-glow: rgba(26, 109, 255, 0.3);
    --cyber-grid: rgba(26, 109, 255, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 30px var(--cyber-glow);

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* 字体 */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;
}

/* ===== 基础样式重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

button {
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

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

/* ===== 容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== 动态背景 ===== */
.cyber-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--cyber-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--cyber-grid) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
    animation: gridMove 20s linear infinite;
}

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

#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo-image {
    height: 45px;
    width: auto;
    object-fit: contain;
    transition: all 0.3s ease;
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: 0.5px;
}

.logo-sub {
    font-size: 0.65rem;
    color: var(--text-light);
    letter-spacing: 1px;
    font-weight: 500;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ===== 按钮样式 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(26, 109, 255, 0.3);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    box-shadow: 0 6px 20px rgba(26, 109, 255, 0.4);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-icon,
.btn-icon-left {
    width: 20px;
    height: 20px;
    position: relative;
    z-index: 1;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

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

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(26, 109, 255, 0.1);
    border: 1px solid var(--primary-blue);
    border-radius: 20px;
    color: var(--primary-blue);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    animation: fadeInDown 0.8s ease;
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    position: relative;
    animation: fadeInUp 0.8s ease;
    animation-fill-mode: both;
}

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

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

.gradient-text {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-medium);
    margin-bottom: 2rem;
    max-width: 500px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    align-items: center;
    animation: fadeInUp 0.8s ease 1s both;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-medium);
    margin-top: 0.5rem;
}

.stat-divider {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--primary-blue), transparent);
}

.hero-visual {
    position: relative;
    animation: fadeIn 1s ease 0.4s both;
}

.visual-placeholder {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, rgba(26, 109, 255, 0.05), rgba(255, 107, 53, 0.05));
    border: 2px dashed var(--primary-blue);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.visual-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(26, 109, 255, 0.1), transparent);
    animation: shimmer 3s ease infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.placeholder-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-blue);
    z-index: 1;
}

.placeholder-hint {
    font-size: 0.875rem;
    color: var(--text-medium);
    text-align: center;
    line-height: 1.8;
    z-index: 1;
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.card-2 {
    bottom: 20%;
    right: -5%;
    animation-delay: 1s;
}

.card-3 {
    top: 50%;
    left: -10%;
    animation-delay: 2s;
}

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

.card-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-blue);
}

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

.card-text {
    font-weight: 600;
    color: var(--text-dark);
    white-space: nowrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-medium);
    font-size: 0.875rem;
    animation: fadeIn 1s ease 1.5s both;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--primary-blue), transparent);
    animation: scrollDown 2s ease infinite;
}

@keyframes scrollDown {
    0% { opacity: 0; transform: translateY(-10px); }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translateY(10px); }
}

/* ===== 通用Section样式 ===== */
section {
    position: relative;
    padding: var(--spacing-xl) 0;
    z-index: 2;
}

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

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: 2px;
    margin-bottom: 1rem;
    position: relative;
    padding: 0 1.5rem;
}

.section-tag::before,
.section-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 2px;
    background: var(--primary-blue);
}

.section-tag::before {
    left: 0;
}

.section-tag::after {
    right: 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-medium);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 产品方案 ===== */
.products {
    background: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    position: relative;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-orange));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

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

.product-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-gray), #E8EEF8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    transition: all 0.4s ease;
}

.product-card:hover .image-placeholder {
    transform: scale(1.05);
}

.placeholder-icon {
    width: 80px;
    height: 80px;
    color: var(--primary-blue);
    opacity: 0.6;
}

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

.image-placeholder p {
    font-weight: 600;
    color: var(--text-medium);
}

.product-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-orange);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-tag.new {
    background: var(--primary-blue);
}

.product-content {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.product-desc {
    color: var(--text-medium);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.product-features {
    margin-bottom: 1.5rem;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.feature-icon {
    color: var(--primary-blue);
    font-weight: 700;
}

.product-btn {
    background: transparent;
    color: var(--primary-blue);
    font-weight: 600;
    padding: 0.5rem 0;
    transition: all 0.3s ease;
}

.product-btn:hover {
    color: var(--accent-orange);
    transform: translateX(5px);
}

/* ===== 核心优势 ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.advantage-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 109, 255, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

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

.advantage-icon {
    width: 64px;
    height: 64px;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
}

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

.advantage-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.advantage-desc {
    color: var(--text-medium);
    line-height: 1.8;
    font-size: 0.9375rem;
    position: relative;
    z-index: 1;
}

/* ===== 技术实力 ===== */
.technology {
    background: var(--white);
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.tech-visual {
    width: 100%;
    display: block;
}

.tech-visual img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.tech-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.tech-item {
    padding: 1.25rem;
    background: var(--bg-gray);
    border-radius: 12px;
    border-left: 4px solid var(--primary-blue);
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-left-color: var(--accent-orange);
}

.tech-item-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.tech-item-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    color: var(--primary-blue);
}

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

.tech-item h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
}

.tech-item p {
    color: var(--text-medium);
    line-height: 1.6;
    font-size: 0.875rem;
}

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

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
    align-items: center;
}

.contact-left {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-item {
    position: relative;
    padding-left: 1.5rem;
}

.contact-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.4rem;
    width: 4px;
    height: calc(100% - 0.4rem);
    background: linear-gradient(180deg, var(--primary-blue), var(--accent-orange));
    border-radius: 2px;
}

.contact-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-medium);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.75rem;
}

.contact-value {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-dark);
    line-height: 1.6;
}

.contact-right {
    background: var(--bg-gray);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

#amap-container {
    width: 100%;
    height: 100%;
    min-height: 400px;
    border-radius: 16px;
}

/* ===== 页脚 ===== */
.footer {
    background: #0A1929;
    color: var(--white);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 1.5rem;
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.link-group h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--white);
}

.link-group a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    margin-bottom: 0.75rem;
    transition: all 0.3s ease;
}

.link-group a:hover {
    color: var(--accent-orange);
    transform: translateX(5px);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom p {
    margin: 0;
}

/* ===== 动画关键帧 ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .hero .container,
    .tech-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-visual {
        order: -1;
    }

    .floating-card {
        display: none;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translateY(8px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translateY(-8px);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .products-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9375rem;
    }

    section {
        padding: var(--spacing-lg) 0;
    }
}