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

/* CSS变量定义 */
:root {
    --primary-color: #ff6b35;
    --primary-light: #ff8c5a;
    --primary-dark: #e85a2b;
    --secondary-color: #1a1a1a;
    --accent-color: #f4f4f4;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --background-primary: #ffffff;
    --background-secondary: #fafafa;
    --border-color: #e0e0e0;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #ff8c5a 100%);
    --gradient-secondary: linear-gradient(135deg, #1a1a1a 0%, #333333 100%);
}

/* 全局样式 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-primary);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 15px;
    align-items: center;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
    padding: 8px 12px;
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
    background: transparent;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-icon {
    width: 16px;
    height: 16px;
    stroke-width: 2;
    transition: all 0.3s ease;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(255, 140, 90, 0.1));
    border-radius: 25px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.2);
}

.nav-menu a:hover::before {
    opacity: 1;
}

.nav-menu a:hover::after {
    width: 80%;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* 主页面 */
.hero {
    height: 700px;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #fafafa 0%, #ffffff 100%);
    overflow: hidden;
    padding: 120px 0 80px 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(255, 107, 53, 0.1), rgba(255, 140, 90, 0.1));
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    width: 80px;
    height: 80px;
    bottom: 30%;
    left: 70%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -2px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.gradient-text:hover {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-tags {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-tag {
    background: rgba(255, 107, 53, 0.1);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

/* 英雄区图片 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-container {
    position: relative;
    width: 500px;
    max-width: 90vw;
    animation: heroFloat 4s ease-in-out infinite;
}

@keyframes heroFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
}

.hero-image {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 25px;
    box-shadow: var(--shadow-heavy);
    transition: all 0.3s ease;
    display: block;
}

.hero-image:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-badge {
    position: absolute;
    background: var(--gradient-primary);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-medium);
    animation: badgeFloat 3s ease-in-out infinite;
}

.floating-badge:nth-child(1) {
    top: 20%;
    right: -10px;
    animation-delay: 0s;
}

.floating-badge.badge-2 {
    top: 50%;
    left: -15px;
    animation-delay: 1s;
    background: linear-gradient(135deg, #4CAF50, #66BB6A);
}

.floating-badge.badge-3 {
    bottom: 25%;
    right: -5px;
    animation-delay: 2s;
    background: linear-gradient(135deg, #2196F3, #42A5F5);
}

@keyframes badgeFloat {
    0%, 100% {
        transform: translateY(0px) scale(1);
    }
    50% {
        transform: translateY(-10px) scale(1.05);
    }
}

/* 通用部分样式 */
.section {
    padding: 100px 0;
    position: relative;
    width: 100%;
    overflow-x: hidden;
}

.section-alt {
    background: var(--background-secondary);
}

/* 区域背景色区分 */
/* 产品介绍 - 白色背景 */
#product {
    background: #ffffff;
}

/* 价格 - 浅灰背景 */
#pricing {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

/* 功能介绍 - 白色背景 */
#features {
    background: #ffffff;
}

/* 优势 - 浅灰背景 */
#advantages {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

/* 应用场景 - 白色背景 */
#scenarios {
    background: #ffffff;
}

/* 下载区域 - 浅灰背景 */
#download {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

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

.section-header h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 产品介绍 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.product-card {
    background: var(--background-primary);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon svg {
    width: 40px;
    height: 40px;
    color: white;
    stroke-width: 2;
}

.product-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.product-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 功能介绍 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-item {
    background: var(--background-primary);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    color: white;
    stroke-width: 2;
}

.feature-item h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 优势部分 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

/* 统一的优势卡片基础样式 */
.advantage-item {
    background: var(--background-primary);
    border-radius: 20px;
    padding: 50px 30px;
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--border-color);
}

.advantage-item .advantage-number {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    opacity: 0.8;
}

.advantage-item h3 {
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.advantage-item p {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 16px;
    line-height: 1.6;
}

/* 主要优势样式 */
.primary-advantage {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.05) 0%, rgba(255, 140, 90, 0.05) 100%);
    border-color: rgba(255, 107, 53, 0.2);
}

.primary-advantage::before {
    background: var(--gradient-primary);
}

.primary-advantage .advantage-number {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.primary-advantage h3 {
    color: var(--primary-color);
}

.primary-advantage p {
    color: var(--text-primary);
}

/* 次要优势样式 */
.secondary-advantage {
    background: linear-gradient(135deg, rgba(102, 102, 102, 0.03) 0%, rgba(153, 153, 153, 0.03) 100%);
    border-color: rgba(102, 102, 102, 0.1);
}

.secondary-advantage::before {
    background: linear-gradient(135deg, #666666 0%, #999999 100%);
}

.secondary-advantage .advantage-number {
    color: #666666;
}

.secondary-advantage h3 {
    color: #666666;
}

.secondary-advantage:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

/* 价格部分 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--background-primary);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
}

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

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-medium);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.price {
    margin-bottom: 30px;
}

.currency {
    font-size: 20px;
    color: var(--text-secondary);
    vertical-align: top;
}

.amount {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
}

.period {
    font-size: 16px;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 10px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* 应用场景 */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.scenario-card {
    background: var(--background-primary);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.scenario-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scenario-icon svg {
    width: 40px;
    height: 40px;
    color: white;
    stroke-width: 2;
}

.scenario-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.scenario-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}



/* 页脚 */
.footer {
    background: var(--secondary-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.footer-brand p {
    color: #cccccc;
    font-size: 16px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 2