/* Global Variables */
:root {
    --primary-color: #6366F1; /* Primary Color - Indigo */
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary-color: #10B981; /* Secondary Color - Green */
    --dark-color: #1F2937;
    --light-color: #F9FAFB;
    --gray-color: #6B7280;
    --gray-light: #E5E7EB;
    --danger-color: #EF4444;
    --success-color: #10B981;
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
}

/* Global Style Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    color: var(--gray-color);
}

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

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* 卡片 */
.card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    will-change: transform, box-shadow;
}

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

/* 导航栏增强动画 */
#navbar {
    transition: background-color 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
}

#navbar.navbar-scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* 按钮动画增强 */
.btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.4);
}

.btn::after {
    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 0.6s, height 0.6s;
}

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

/* 滚动元素动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* 产品特点卡片动画 */
.feature-card:hover .feature-icon {
    transform: rotate(15deg) scale(1.1);
    background-color: var(--primary-light);
}

/* About Section */
.about-section {
    padding: 80px 0;
    background-color: var(--light-color);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 50px;
}

@media (min-width: 768px) {
    .about-content {
        flex-direction: row;
        align-items: flex-start;
    }
}

.about-text {
    flex: 1;
    padding-right: 0;
    margin-bottom: 30px;
}

@media (min-width: 768px) {
    .about-text {
        padding-right: 40px;
        margin-bottom: 0;
    }
}

.about-text h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-info h4 {
    margin-bottom: 15px;
    color: var(--dark-color);
    font-size: 1.2rem;
}

.about-info ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-info li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-info li i {
    color: var(--primary-color);
    width: 20px;
}

/* Privacy Policy Section */
.privacy-section {
    padding: 80px 0;
    background-color: white;
}

.privacy-content {
    max-width: 900px;
    margin: 50px auto 0;
}

.privacy-item {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--gray-light);
}

.privacy-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.privacy-item h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
    font-size: 1.3rem;
}

/* WHOIS Information */
.whois-info {
    margin-top: 15px;
    font-size: 0.85rem;
    color: var(--gray-color);
    line-height: 1.5;
    padding-top: 10px;
    border-top: 1px solid var(--gray-light);
}

.whois-info strong {
    color: var(--dark-color);
    font-weight: 600;
}

/* 数字计数器动画 */
@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.count-animate {
    animation: countUp 0.8s ease forwards;
}

/* 社交图标增强动画 */
.footer-social a {
    transition: all 0.3s ease;
}

.footer-social a:hover {
    transform: translateY(-5px) rotate(5deg);
    background-color: var(--primary-color);
    color: var(--light-color);
}

/* 输入框增强交互 */
.newsletter-form input:focus,
input:focus,
textarea:focus,
select:focus {
    transition: all 0.3s ease;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

/* 导航栏样式 */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
    background-color: transparent;
}

#navbar.navbar-scrolled {
    background-color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

#navbar.navbar-scrolled .logo {
    color: var(--primary-color);
}

.logo-icon {
    font-size: 1.75rem;
    margin-right: 0.75rem;
    color: var(--primary-color);
}

/* 桌面导航 */
.desktop-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.desktop-nav a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-color);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

#navbar.navbar-scrolled .desktop-nav a {
    color: var(--dark-color);
}

#navbar.navbar-scrolled .desktop-nav a:hover {
    color: var(--primary-color);
}

/* 桌面CTA */
.desktop-cta {
    display: flex;
    gap: 1rem;
}

/* 移动菜单按钮 */
.menu-button {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-color);
}

#navbar.navbar-scrolled .menu-button {
    color: var(--dark-color);
}

/* 移动导航菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background-color: white;
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.1);
    padding: 3rem 2rem;
    transition: var(--transition);
    z-index: 1001;
}

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

.mobile-menu ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.mobile-menu a {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark-color);
    padding: 0.75rem 0;
}

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

.mobile-cta {
    margin-top: 2rem;
}

/* 英雄区域 */
#hero {
    padding: 15rem 0 10rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #F9FAFB 0%, #F3F4F6 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 3rem;
    position: relative;
    z-index: 1;
}

.hero-text .highlight {
    color: var(--primary-color);
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    margin: 2.5rem 0;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-light);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-color);
}

/* 英雄图片 */
.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.device-container {
    position: relative;
}

.app-screenshot {
    max-width: 100%;
    height: auto;
    border-radius: 2rem;
    box-shadow: var(--shadow-hover);
    position: relative;
    z-index: 1;
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 110%;
    height: 110%;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    opacity: 0.5;
    z-index: 0;
}

/* 背景装饰元素 */
.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    opacity: 0.1;
}

.shape-1 {
    width: 30rem;
    height: 30rem;
    top: -10rem;
    right: -10rem;
}

.shape-2 {
    width: 20rem;
    height: 20rem;
    bottom: -5rem;
    left: 10%;
}

.shape-3 {
    width: 15rem;
    height: 15rem;
    top: 30%;
    left: -5rem;
}

/* 部分间距 */
section {
    padding: 6rem 0;
}

/* 产品特点区域 */
#features {
    position: relative;
    background-color: white;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    margin-bottom: 1.5rem;
}

.section-header .highlight {
    color: var(--primary-color);
}

/* 特点网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    margin-bottom: 5rem;
}

.feature-card {
    text-align: center;
    padding: 2.5rem;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    margin-top: 1.5rem;
    transition: var(--transition);
}

.feature-link:hover {
    transform: translateX(5px);
}

.feature-link i {
    margin-left: 0.5rem;
    transition: var(--transition);
}

.feature-link:hover i {
    transform: translateX(5px);
}

/* 附加功能列表 */
.additional-features {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 3rem;
    margin-bottom: 5rem;
}

.additional-features h3 {
    text-align: center;
    margin-bottom: 2.5rem;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.feature-check {
    width: 40px;
    height: 40px;
    background-color: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.25rem;
}

.feature-text h4 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.feature-text p {
    margin-bottom: 0;
    font-size: 1rem;
}

/* 特点对比展示 */
.feature-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.showcase-image {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-hover);
}

.showcase-img {
    width: 100%;
    height: auto;
    display: block;
}

.showcase-content h3 {
    margin-bottom: 1.5rem;
}

.comparison-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2.5rem;
}

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

.comparison-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.comparison-label {
    font-size: 0.875rem;
    color: var(--gray-color);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 2rem;
    }
    
    .hero-image {
        margin-top: 3rem;
    }
    
    /* 产品特点响应式 */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-showcase {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .comparison-stats {
        justify-content: center;
    }
    
    .showcase-image {
        order: 2;
        margin-top: 2rem;
    }
    
    .showcase-content {
        order: 1;
    }
}

@media (max-width: 768px) {
    /* 导航栏响应式 */
    .desktop-nav,
    .desktop-cta {
        display: none;
    }
    
    .menu-button {
        display: block;
    }
    
    /* 英雄区域响应式 */
    #hero {
        padding: 12rem 0 8rem;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    /* 产品特点响应式 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-list {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .additional-features {
        padding: 2rem;
    }
    
    .comparison-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    /* 通用响应式 */
    section {
        padding: 4rem 0;
    }
    
    .btn-large {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

/* 全局动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

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

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-15px);
    }
    60% {
        transform: translateY(-7px);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
}

.slide-in-left {
    animation: slideInLeft 0.8s ease forwards;
    opacity: 0;
}

.slide-in-right {
    animation: slideInRight 0.8s ease forwards;
    opacity: 0;
}

.pulse {
    animation: pulse 2s infinite;
}

.float {
    animation: float 3s ease-in-out infinite;
}

.bounce {
    animation: bounce 1s;
}

/* 用户评价样式 */
#testimonials {
  padding: 6rem 0;
  background-color: var(--light-color);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.testimonial-card {
  background-color: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.testimonial-header {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.user-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

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

.user-info {
  flex-grow: 1;
}

.user-info h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
  color: var(--dark-color);
}

.user-info p {
  font-size: 0.9rem;
  color: var(--gray-color);
  margin: 0;
}

.user-rating {
  color: var(--primary-color);
  font-size: 1.1rem;
}

.testimonial-content p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--dark-color);
  margin: 0;
  font-style: italic;
}

/* 统计数据 */
.testimonials-stats {
  margin-top: 4rem;
}

.stats-container {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stats-item {
  padding: 1rem;
}

.stats-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stats-label {
  display: block;
  font-size: 0.9rem;
  color: var(--gray-color);
}

/* 使用场景样式 */
#use-cases {
  padding: 6rem 0;
  background-color: var(--white);
}

/* CTA区域样式 */
#cta {
  padding: 6rem 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

/* CTA装饰元素 */
#cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  z-index: 0;
}

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

.cta-content {
  max-width: 100%;
}

.cta-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--white);
  line-height: 1.3;
}

.cta-content h2 .highlight {
  color: var(--light-bg);
}

.cta-content p {
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
}

/* 下载按钮样式 */
.cta-buttons {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.download-button {
  display: flex;
  align-items: center;
  background-color: var(--dark-bg);
  color: var(--white);
  padding: 1rem 1.5rem;
  border-radius: 0.75rem;
  transition: transform 0.3s ease, background-color 0.3s ease;
  text-decoration: none;
  min-width: 150px;
}

.download-button:hover {
  transform: translateY(-3px);
  background-color: rgba(0, 0, 0, 0.8);
}

.button-icon {
  font-size: 1.75rem;
  margin-right: 1rem;
}

.button-text .button-label {
  font-size: 0.8rem;
  opacity: 0.8;
}

.button-text .button-title {
  font-size: 1rem;
  font-weight: 600;
}

.cta-button {
  min-width: 120px;
}

/* 特权信息样式 */
.cta-perks {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.perk-item {
  display: flex;
  align-items: center;
  font-size: 1rem;
}

.perk-item i {
  margin-right: 0.75rem;
  color: var(--success-color);
  font-size: 1.25rem;
}

/* CTA图像样式 */
.cta-image {
  text-align: center;
}

.cta-img {
  max-width: 100%;
  height: auto;
  border-radius: 1rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .cta-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  
  .cta-buttons {
    justify-content: center;
  }
  
  .cta-perks {
    align-items: center;
  }
  
  .perk-item {
    justify-content: center;
  }
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.use-case-card {
  background-color: var(--light-color);
  padding: 2rem;
  border-radius: var(--border-radius);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.use-case-icon {
  width: 80px;
  height: 80px;
  background-color: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 1.5rem;
}

.use-case-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

.use-case-card p {
  color: var(--gray-color);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.use-case-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.feature-tag {
  background-color: var(--primary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  font-size: 0.8rem;
  font-weight: 500;
}

/* 场景展示图片 */
.use-cases-showcase {
  margin-top: 4rem;
}

.showcase-banner {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-hover);
}

/* 页脚样式 */
footer {
  background-color: var(--dark-color);
  color: var(--light-color);
  padding: 4rem 0 2rem;
  position: relative;
  overflow: hidden;
}

/* 页脚装饰元素 */
footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
  position: relative;
  z-index: 1;
}

/* 品牌信息 */
.footer-brand .footer-logo {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  display: inline-block;
}

.footer-brand .footer-description {
  color: var(--gray-color);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--light-color);
  font-size: 1.25rem;
  transition: all 0.3s ease;
}

.footer-social a:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

/* 链接列表 */
.footer-links h4 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  color: var(--light-color);
  position: relative;
  padding-bottom: 0.75rem;
}

.footer-links h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--primary-color);
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--gray-color);
  transition: color 0.3s ease, padding-left 0.3s ease;
  text-decoration: none;
  display: inline-block;
  padding-left: 0;
}

.footer-links a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

.footer-links i {
  margin-right: 0.75rem;
  color: var(--primary-color);
}

/* 订阅表单 */
.footer-newsletter {
  margin-top: 2rem;
}

.footer-newsletter h4 {
  margin-bottom: 0.75rem;
}

.footer-newsletter p {
  color: var(--gray-color);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.newsletter-form {
  display: flex;
  gap: 0;
  max-width: 100%;
}

.newsletter-form input {
  flex-grow: 1;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 0.5rem 0 0 0.5rem;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--light-color);
  font-size: 0.9rem;
}

.newsletter-form input::placeholder {
  color: var(--gray-color);
}

.newsletter-form input:focus {
  outline: none;
  background-color: rgba(255, 255, 255, 0.15);
}

.newsletter-button {
  padding: 0.75rem 1rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0 0.5rem 0.5rem 0;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.newsletter-button:hover {
  background-color: var(--primary-dark);
  transform: scale(1.05);
}

/* 页脚底部 */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copyright {
  color: var(--gray-color);
  font-size: 0.9rem;
}

.footer-policies {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

.footer-policies a {
  color: var(--gray-color);
  transition: color 0.3s ease;
}

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

.footer-policies span {
  color: var(--gray-color);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-policies {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-form input,
  .newsletter-button {
    border-radius: 0.5rem;
    width: 100%;
  }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}