:root {
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --secondary: #0f172a;
    --accent: #f59e0b;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --success: #10b981;
    --border-radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

body {
    color: var(--secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
header {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    padding: 5px 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    transition: padding 0.3s ease;
}

header.scrolled .navbar {
    padding: 10px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 24px;
    color: var(--primary);
    animation: fadeInDown 1s ease;
    cursor: pointer;
    transition: transform 0.3s ease;
    text-decoration: none !important;
}

.logo:link,
.logo:visited,
.logo:hover,
.logo:active,
.logo:focus {
    text-decoration: none !important;
    color: var(--primary);
}

.logo:hover {
    transform: scale(1.05);
    color: var(--primary);
}

.logo i {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--secondary);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-links a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary);
    transition: width 0.3s ease;
}

.nav-links a:hover:after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 15px;
}

/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-size: 16px;
    display: inline-block;
    text-decoration: none;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
    background-color: rgba(30, 64, 175, 0.1);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-accent {
    background-color: var(--accent);
    color: white;
}

.btn-accent:hover {
    background-color: #e59a0b;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* 首页英雄区域 */
.hero {
    padding: 180px 0 100px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
}

/* 动态背景效果 - 数据中枢主题 */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.hero-bg:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(30, 64, 175, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(245, 158, 11, 0.08) 0%, transparent 50%);
    z-index: 1;
}

/* 数据流动画效果 */
.data-flow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.3;
}

.data-node {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: pulse 3s infinite ease-in-out;
}

.data-node:nth-child(1) {
    width: 120px;
    height: 120px;
    top: 20%;
    left: 15%;
    animation-delay: 0s;
}

.data-node:nth-child(2) {
    width: 80px;
    height: 80px;
    top: 40%;
    right: 20%;
    animation-delay: 0.5s;
}

.data-node:nth-child(3) {
    width: 100px;
    height: 100px;
    bottom: 30%;
    left: 25%;
    animation-delay: 1s;
}

.data-node:nth-child(4) {
    width: 60px;
    height: 60px;
    bottom: 20%;
    right: 15%;
    animation-delay: 1.5s;
}

.data-node:nth-child(5) {
    width: 90px;
    height: 90px;
    top: 30%;
    left: 50%;
    animation-delay: 2s;
}

/* 连接线 */
.data-connector {
    position: absolute;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(30, 64, 175, 0.6), transparent);
    transform-origin: left center;
    animation: connectorFlow 8s infinite linear;
}

@keyframes connectorFlow {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: 200px 0;
    }
}

.data-connector:nth-child(6) {
    top: 26%;
    left: 20%;
    width: 150px;
    transform: rotate(45deg);
    animation-delay: 0s;
}

.data-connector:nth-child(7) {
    top: 45%;
    left: 60%;
    width: 120px;
    transform: rotate(-30deg);
    animation-delay: 2s;
}

.data-connector:nth-child(8) {
    top: 60%;
    left: 30%;
    width: 180px;
    transform: rotate(15deg);
    animation-delay: 4s;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    animation: fadeInUp 1.2s ease 0.3s both;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
    background: linear-gradient(90deg, #fff, #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    max-width: 800px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    animation: fadeInUp 1.2s ease 0.6s both;
}

/* 平台图标展示 */
.platforms {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 50px;
    flex-wrap: nowrap;
    animation: fadeInUp 1.2s ease 0.9s both;
}

.platform {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    flex: 0 1 auto;
    white-space: nowrap;
}

.platform:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.platform i {
    font-size: 24px;
    color: var(--accent);
}

/* 通用区块样式 */
section {
    padding: 80px 0;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.section-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto 50px;
    font-size: 18px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease 0.2s;
}

.section-subtitle.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 痛点区域 */
.pain-points {
    background-color: var(--light);
    position: relative;
    overflow: hidden;
}

.pain-points:before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(30, 64, 175, 0.05) 0%, transparent 70%);
    z-index: 0;
}

.pain-points-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.pain-point {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.6s ease;
    border-left: 4px solid #ef4444;
}

.pain-point.visible {
    opacity: 1;
    transform: translateY(0);
}

.pain-point:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pain-point i {
    font-size: 32px;
    color: #ef4444;
    margin-bottom: 20px;
}

.pain-point h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

/* 对比表格 */
.comparison-table {
    overflow-x: auto;
    margin-top: 30px;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.comparison-table.visible {
    opacity: 1;
    transform: translateY(0);
}

table {
    width: 100%;
    border-collapse: collapse;
    box-shadow: var(--shadow);
    border-radius: var(--border-radius);
    overflow: hidden;
}

th, td {
    padding: 20px;
    text-align: left;
    border-bottom: 1px solid var(--gray-light);
}

th {
    background-color: var(--primary);
    color: white;
    font-weight: 600;
}

tr {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s ease;
}

tr.visible {
    opacity: 1;
    transform: translateX(0);
}

tr:nth-child(even) {
    background-color: #f8fafc;
}

.good {
    color: var(--success);
    font-weight: 600;
}

/* 解决方案区域 - 三大核心引擎 */
.solutions-section {
    background-color: #f0f9ff;
}

.engines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.engine {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 40px 30px;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--primary);
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.6s ease;
    position: relative;
    overflow: hidden;
}

.engine:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.engine.visible {
    opacity: 1;
    transform: translateY(0);
}

.engine:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.engine-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(30, 64, 175, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.engine-icon i {
    font-size: 32px;
    color: var(--primary);
}

.engine h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--primary);
}

.engine-value {
    background-color: rgba(16, 185, 129, 0.1);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--success);
    display: inline-block;
    margin-top: 15px;
}

/* 工作流程 */
.workflow {
    background-color: var(--light);
    position: relative;
    overflow: hidden;
}

.workflow:before {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.05) 0%, transparent 70%);
    z-index: 0;
}

.workflow-steps {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-top: 50px;
    position: relative;
}

.workflow-steps:before {
    content: '';
    position: absolute;
    top: 60px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    z-index: 1;
    transform: translateY(-50%);
}

.step {
    flex: 1;
    min-width: 250px;
    text-align: center;
    position: relative;
    z-index: 2;
    margin-bottom: 30px;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.6s ease;
    padding: 20px 15px;
}

.step.visible {
    opacity: 1;
    transform: translateY(0);
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 700;
    margin: 0 auto 25px;
    position: relative;
    overflow: hidden;
}

.step-number:after {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    opacity: 0.3;
    animation: pulse 2s infinite;
}

.step h3 {
    font-size: 22px;
    margin-bottom: 18px;
    color: var(--secondary);
    font-weight: 600;
}

.step p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--gray);
    margin-bottom: 20px;
    padding: 0 10px;
    max-width: 100%;
}

.step-highlight {
    background-color: rgba(16, 185, 129, 0.1);
    padding: 10px 18px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--success);
    display: inline-block;
    margin-top: 15px;
}

.workflow-tip {
    text-align: center;
    margin-top: 50px;
    padding: 20px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    font-style: italic;
    color: var(--gray);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.workflow-tip.visible {
    opacity: 1;
    transform: translateY(0);
}

.workflow-tip strong {
    color: var(--primary);
}

/* 核心能力区域 */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.capability {
    text-align: center;
    padding: 30px 20px;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.6s ease;
    border-radius: var(--border-radius);
    background-color: white;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.capability.visible {
    opacity: 1;
    transform: translateY(0);
}

.capability:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.capability-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(30, 64, 175, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.6s ease;
}

.capability:hover .capability-icon {
    transform: rotateY(180deg) scale(1.1);
}

.capability-icon i {
    font-size: 30px;
    color: var(--primary);
}

/* 用户评价 */
.testimonials {
    background-color: var(--light);
    position: relative;
    overflow: hidden;
}

.testimonials:before {
    content: '';
    position: absolute;
    top: 50%;
    right: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, transparent 70%);
    z-index: 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.testimonial {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease;
}

.testimonial.visible {
    opacity: 1;
    transform: translateX(0);
}

.testimonial:nth-child(even) {
    transform: translateX(30px);
}

.testimonial:nth-child(even).visible {
    transform: translateX(0);
}

.testimonial:hover {
    transform: translateY(-10px);
}

.testimonial blockquote {
    font-style: italic;
    margin-bottom: 20px;
    position: relative;
}

.testimonial blockquote:before {
    content: '"';
    font-size: 60px;
    color: var(--gray-light);
    position: absolute;
    top: -20px;
    left: -10px;
}

.testimonial-author {
    font-weight: 600;
    color: var(--secondary);
}

.testimonial-role {
    color: var(--gray);
    font-size: 14px;
}

/* 使用场景 */
.use-cases {
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.use-case {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--accent);
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease;
}

.use-case.visible {
    opacity: 1;
    transform: translateX(0);
}

.use-case:nth-child(even) {
    transform: translateX(30px);
}

.use-case:nth-child(even).visible {
    transform: translateX(0);
}

.use-case h4 {
    color: var(--primary);
    margin-bottom: 10px;
}

.use-case-impact {
    background-color: rgba(16, 185, 129, 0.1);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--success);
    display: inline-block;
    margin-top: 15px;
}

/* 安全保障 */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.security-item {
    text-align: center;
    padding: 20px;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.6s ease;
}

.security-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.security-item:hover .security-icon {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(16, 185, 129, 0.2);
}

.security-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.4s ease;
}

.security-icon i {
    font-size: 30px;
    color: var(--success);
}

/* 适合团队 */
.teams-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.team-type {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.6s ease;
}

.team-type.visible {
    opacity: 1;
    transform: translateY(0);
}

.team-type:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.team-type i {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 15px;
}

/* CTA区域 */
.cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" preserveAspectRatio="none"><path d="M0,100 Q250,50 500,100 T1000,0 L1000,100 L0,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: 100% 100%;
    animation: wave 20s infinite linear;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
}

.cta-subtitle {
    font-size: 18px;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    position: relative;
    z-index: 2;
}

.cta-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.cta .btn-outline {
    color: white;
    border-color: white;
}

.cta .btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.cta-links {
    margin-top: 50px;
    position: relative;
    z-index: 2;
}

.cta-links a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    transition: opacity 0.3s;
}

.cta-links a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* 页脚 */
footer {
    background-color: var(--secondary);
    color: white;
    padding: 60px 0 30px;
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-links h4 {
    margin-bottom: 20px;
    font-size: 18px;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
    position: relative;
}

.footer-links a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: white;
    transition: width 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-links a:hover:after {
    width: 100%;
}

/* CTA区域二维码显示 */
.cta-qrcodes {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    margin-top: 50px;
    flex-wrap: wrap;
}

.cta-qrcode-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.cta-qrcode-item img {
    width: 120px;
    height: 120px;
    border-radius: 12px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    background-color: white;
    padding: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.cta-qrcode-item img:hover {
    transform: scale(1.1);
    border-color: rgba(255, 255, 255, 0.6);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.cta-qrcode-item span {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    text-align: center;
    font-weight: 500;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #334155;
    color: #94a3b8;
    font-size: 14px;
}

.footer-bottom-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 15px;
    flex-wrap: wrap;
}

/* 动画定义 */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.1;
    }
    100% {
        transform: scale(1);
        opacity: 0.3;
    }
}

@keyframes wave {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* 右下角按钮组容器 */
.bottom-right-buttons {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

/* 返回顶部按钮 */
.back-to-top {
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.2);
}

.back-to-top i {
    font-size: 20px;
}

/* 右下角二维码图标按钮 */
.contact-icons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
}

.contact-icon.visible {
    opacity: 1;
    visibility: visible;
}

.contact-icon:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.2);
}

.contact-icon i {
    font-size: 20px;
}

.contact-icon .iconfont {
    font-size: 20px;
}

/* 二维码大图预览 */
.qrcode-preview {
    position: fixed;
    width: 0;
    height: 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    pointer-events: none;
}

.qrcode-preview.show {
    width: 200px;
    height: 200px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.qrcode-preview img {
    width: 100%;
    height: 100%;
    border-radius: 12px;
    border: 3px solid white;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    background-color: white;
    padding: 10px;
}

.qrcode-preview::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 10px solid white;
}

/* 邮箱提示框 */
.email-preview {
    position: fixed;
    width: 0;
    height: 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    pointer-events: none;
}

.email-preview.show {
    width: auto;
    min-width: 180px;
    height: auto;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.email-preview-content {
    background-color: white;
    border-radius: 12px;
    border: 3px solid white;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    padding: 15px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.email-preview-content:hover {
    background-color: #f8fafc;
}

.email-preview-address {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
    word-break: break-all;
}

.email-preview-hint {
    font-size: 12px;
    color: var(--gray);
    margin-top: 5px;
}

.email-preview::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 10px solid white;
}

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

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.2);
}

.back-to-top i {
    font-size: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
    
    .nav-links {
        width: 100%;
        flex-wrap: nowrap;
        white-space: nowrap;
        overflow-x: auto;
        gap: 16px;
        padding: 4px 0;
        scrollbar-width: none;
    }

    .nav-links::-webkit-scrollbar {
        display: none;
    }
    
    .nav-actions {
        width: 100%;
        justify-content: flex-start;
        gap: 10px;
    }
    
    .nav-actions .btn {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .hero {
        padding: 220px 0 80px;
        margin-top: 0;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero-actions, .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .workflow-steps:before {
        display: none;
    }
    
    .step {
        margin-bottom: 40px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .engines-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-qrcodes {
        gap: 25px;
    }
    
    .cta-qrcode-item img {
        width: 100px;
        height: 100px;
    }
    
    .bottom-right-buttons {
        right: 20px;
        bottom: 20px;
    }
    
    .qrcode-preview.show {
        width: 150px;
        height: 150px;
    }
    
    .platforms {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .platform {
        padding: 10px 15px;
        font-size: 14px;
    }
    
    .platform i {
        font-size: 20px;
    }
}