/* 全局样式和字体 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #9333EA;
    --primary-dark: #7C3AED;
    --primary-darker: #6B46C1;
    --secondary-color: #A855F7;
    --text-primary: #FFFFFF;
    --text-secondary: #E5E7EB;
    --text-muted: #9CA3AF;
    --bg-white: #0F172A;
    --bg-light: #1E293B;
    --bg-dark: #020617;
    --bg-darker: #000000;
    --bg-card: #0F172A;
    --border-color: rgba(147, 51, 234, 0.15);
    --border-light: rgba(255, 255, 255, 0.08);
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.8);
    --shadow-purple: 0 10px 40px rgba(147, 51, 234, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--bg-darker);
    min-height: 100vh;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(2, 6, 23, 0.6);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(147, 51, 234, 0.1);
    z-index: 1000;
    padding: 1.25rem 0;
    transition: background 0.3s, backdrop-filter 0.3s;
}

.navbar.scrolled {
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

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

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.nav-brand .logo-img {
    height: 2rem;
    width: auto;
    display: block;
    transition: transform 0.3s ease;
}

.nav-brand a:hover .logo-img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    margin: 0;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-actions .btn-primary {
    padding: 0.625rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 0.5rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.nav-actions .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(147, 51, 234, 0.4);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    position: relative;
    pointer-events: auto;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
}

.mobile-menu-toggle:hover span {
    background: var(--primary-color);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

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

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

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
    text-align: center;
}

/* 英雄区域 - 轮播图 */
.hero-carousel {
    margin-top: 80px;
    position: relative;
    height: 90vh;
    min-height: 600px;
    max-height: 800px;
    overflow: hidden;
}

.carousel-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 1;
}

.slide-image {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

@media (max-width: 768px) {
    .slide-image {
        background-attachment: scroll;
    }
    
    /* 确保移动端图片正常显示 */
    .slide-image {
        background-size: cover;
        background-position: center;
    }
}

/* 轮播图1: 马来西亚主权基金官方授牌 */
.slide-0 {
    background-image: url('../images/slide-1.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
}

.slide-0::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

/* 轮播图2: 实时监控仪表盘 - 数字货币数据可视化 */
.slide-1 {
    background-image: url('../images/slide-2.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
}

.slide-1::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

/* 轮播图2: 智能分析 - 专业人士分析数据 */
.slide-2 {
    background-image: url('../images/slide-3.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
}

.slide-2::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

/* 轮播图3: 安全存储 - 区块链技术/企业级安全 */
.slide-3 {
    background-image: url('../images/slide-4.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
}

.slide-3::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.slide-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
    color: white;
}

.promo-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    font-weight: 600;
}


.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8), 0 4px 20px rgba(0, 0, 0, 0.6);
    color: #FFFFFF;
}

.hero-title .highlight {
    color: #FBBF24;
    text-shadow: 0 0 20px rgba(251, 191, 36, 0.5);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    line-height: 1.8;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7), 0 1px 3px rgba(0, 0, 0, 0.5);
    color: #FFFFFF;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.hero-note {
    font-size: 0.9rem;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
    color: rgba(255, 255, 255, 0.95);
}

/* 轮播控制按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s;
    opacity: 0.7;
}

.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

/* 轮播指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.3s;
    padding: 0;
    border: none;
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.2);
}

.indicator.active {
    background: white;
    width: 32px;
    border-radius: 6px;
}

/* 章节标题 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.1rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    opacity: 0.9;
}

/* 价值主张 */
.value-proposition {
    padding: 4rem 0;
    background: var(--bg-darker);
}

/* 数据对比 */
.stats-comparison {
    padding: 4rem 0;
    background: var(--bg-dark);
}

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

.stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-purple);
    border-color: var(--primary-color);
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 功能区域 */
.features {
    padding: 6rem 0;
    background: var(--bg-darker);
}

.feature-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

.feature-section.reverse {
    direction: rtl;
}

.feature-section.reverse > * {
    direction: ltr;
}

.feature-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.feature-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    opacity: 0.9;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 0.75rem 0;
    font-size: 1.1rem;
    color: var(--text-primary);
    position: relative;
    padding-left: 2rem;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
    font-size: 1.5rem;
}

.feature-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature-image-placeholder {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, #6B46C1 0%, #9333EA 50%, #7C3AED 100%);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-purple);
    border: 1px solid rgba(147, 51, 234, 0.3);
    overflow: hidden;
}

.feature-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 1rem;
}

/* Mockup样式 */
.dashboard-mockup {
    width: 90%;
    height: 90%;
    background: rgba(15, 23, 42, 0.8);
    border-radius: 0.5rem;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border: 1px solid rgba(147, 51, 234, 0.2);
}

.mockup-header {
    height: 40px;
    background: rgba(2, 6, 23, 0.6);
    border-radius: 0.25rem;
}

.mockup-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mockup-chart {
    flex: 1;
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.2) 0%, rgba(124, 58, 237, 0.2) 100%);
    border-radius: 0.25rem;
}

.mockup-stats {
    display: flex;
    gap: 1rem;
}

.mockup-stat {
    flex: 1;
    height: 60px;
    background: rgba(2, 6, 23, 0.5);
    border-radius: 0.25rem;
}

.analytics-mockup {
    width: 90%;
    height: 90%;
    background: rgba(15, 23, 42, 0.8);
    border-radius: 0.5rem;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border: 1px solid rgba(147, 51, 234, 0.2);
}

.analytics-chart {
    flex: 1;
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.2) 0%, rgba(147, 51, 234, 0.2) 100%);
    border-radius: 0.25rem;
}

.analytics-insights {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.insight-item {
    height: 40px;
    background: rgba(2, 6, 23, 0.5);
    border-radius: 0.25rem;
}

.security-mockup {
    width: 90%;
    height: 90%;
    background: rgba(15, 23, 42, 0.8);
    border-radius: 0.5rem;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    border: 1px solid rgba(147, 51, 234, 0.2);
}

.security-shield {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #9333EA 0%, #7C3AED 100%);
    border-radius: 50%;
    position: relative;
    box-shadow: 0 0 30px rgba(147, 51, 234, 0.5);
}

.security-shield::before {
    content: "🛡️";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
}

.security-layers {
    display: flex;
    gap: 1rem;
}

.layer {
    width: 60px;
    height: 60px;
    background: rgba(2, 6, 23, 0.5);
    border-radius: 0.25rem;
    border: 2px solid var(--primary-color);
}

/* 服务区域 */
.services {
    padding: 6rem 0;
    background: var(--bg-dark);
}

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

.service-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-purple);
    border-color: var(--primary-color);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 技术优势区域 */
.advantages {
    padding: 6rem 0;
    background: var(--bg-darker);
}

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

.advantage-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-purple);
    border-color: var(--primary-color);
}

.advantage-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: block;
}

.advantage-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.advantage-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 合作伙伴区域 */
.partners {
    padding: 6rem 0;
    background: var(--bg-dark);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    align-items: center;
}

.partner-item {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.partner-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.partner-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    padding: 1rem;
    background: rgba(147, 51, 234, 0.1);
    border-radius: 0.5rem;
    width: 100%;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-name {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.toggle-label {
    font-weight: 500;
    color: var(--text-primary);
}

.discount-badge {
    background: var(--success-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    margin-left: 0.5rem;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(147, 51, 234, 0.3);
    transition: 0.4s;
    border-radius: 30px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--primary-color);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(30px);
}

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

.pricing-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-purple);
    border-color: var(--primary-color);
}

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    box-shadow: var(--shadow-purple);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 600;
}

.pricing-header {
    margin-bottom: 2rem;
}

.pricing-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price-period {
    font-size: 1rem;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    color: var(--text-primary);
    position: relative;
    padding-left: 1.5rem;
}

.pricing-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.pricing-note {
    text-align: center;
    color: var(--text-secondary);
    margin-top: 2rem;
    font-size: 0.9rem;
}

/* 评价区域 */
.reviews {
    padding: 6rem 0;
    background: var(--bg-dark);
}

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

.review-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.review-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.review-rating {
    color: #fbbf24;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.review-text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
}

.author-title {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* FAQ区域 */
.faq {
    padding: 6rem 0;
    background: var(--bg-darker);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    margin-top: 3rem;
}

.faq-item {
    background: var(--bg-card);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: border-color 0.3s;
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.faq-question:hover {
    background: rgba(147, 51, 234, 0.08);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    padding: 0;
    opacity: 1;
}

.faq-answer p,
.faq-answer ul,
.faq-answer ol {
    padding: 1.5rem 1.5rem 0 1.5rem;
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.8;
    transition: opacity 0.3s ease-out 0.1s;
    opacity: 0;
}

.faq-answer p:last-child,
.faq-answer ul:last-child,
.faq-answer ol:last-child {
    padding-bottom: 1.5rem;
}

.faq-item.active .faq-answer p,
.faq-item.active .faq-answer ul,
.faq-item.active .faq-answer ol {
    opacity: 1;
}

.faq-answer p,
.faq-answer li {
    color: var(--text-secondary);
}

.faq-answer ul,
.faq-answer ol {
    margin-left: 0;
}

.faq-item.active .faq-answer ul,
.faq-item.active .faq-answer ol {
    margin-left: 1.5rem;
}

.faq-answer li {
    margin-bottom: 0.5rem;
}

/* 联系表单 */
.contact {
    padding: 6rem 0;
    background: var(--bg-dark);
    color: var(--text-primary);
    position: relative;
}

.contact .section-title,
.contact .section-subtitle {
    color: var(--text-primary);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    margin-top: 3rem;
    position: relative;
    z-index: 1;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-card);
    color: var(--text-primary);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.2);
}

.form-note {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 页脚 */
.footer {
    background: #000000;
    color: white;
    padding: 4rem 0 2rem 0;
    border-top: 1px solid rgba(147, 51, 234, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 导航栏 */
    .navbar {
        padding: 1rem 0;
    }

    .navbar .container {
        padding: 0 15px;
    }

    .nav-brand a {
        font-size: 1.25rem;
        gap: 0.5rem;
    }

    .nav-brand .logo-img {
        height: 1.75rem;
    }

    .nav-menu {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: rgba(2, 6, 23, 0.95);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border-top: none;
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
        transform: translateX(-100%);
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        list-style: none;
        gap: 0;
        margin: 0;
    }

    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        width: 100%;
        margin: 0;
    }

    .nav-menu a {
        display: block;
        color: #F3F4F6;
        padding: 0.75rem 0;
        border-bottom: 1px solid rgba(147, 51, 234, 0.1);
        width: 100%;
        text-align: left;
    }

    .nav-menu a::after {
        display: none;
    }

    .nav-menu a:hover {
        color: #9333EA;
    }

    .nav-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
        background: #9333EA;
    }

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
        background: #9333EA;
    }

    /* 轮播图 */
    .hero-carousel {
        height: 80vh;
        min-height: 500px;
        max-height: 700px;
        margin-top: 70px;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
    }

    .hero-title p {
        font-size: 1.5rem;
        margin-top: 0.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        padding: 0 10px;
    }

    .hero-cta {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
        padding: 0 15px;
    }

    .hero-cta .btn {
        width: 100%;
        text-align: center;
    }

    .promo-badge {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
        gap: 0.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    

    .carousel-btn {
        width: 40px;
        height: 40px;
    }

    .carousel-prev {
        left: 10px;
    }

    .carousel-next {
        right: 10px;
    }

    .carousel-indicators {
        bottom: 20px;
    }

    .slide-content {
        padding: 0 15px;
    }

    /* 内容区域 */
    .container {
        padding: 0 15px;
    }

    .section-title {
        font-size: 2rem;
        line-height: 1.3;
    }

    .section-subtitle {
        font-size: 1rem;
        padding: 0 10px;
    }

    /* 核心价值 */
    .value-proposition {
        padding: 3rem 0;
    }

    /* 功能区域 */
    .features {
        padding: 4rem 0;
    }

    .feature-section {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 4rem;
    }

    .feature-section.reverse {
        direction: ltr;
    }

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

    .feature-description {
        font-size: 1rem;
    }

    .feature-list li {
        font-size: 1rem;
        padding-left: 1.5rem;
    }

    .feature-image-placeholder {
        max-width: 100%;
    }

    /* 统计卡片 */
    .stats-comparison {
        padding: 3rem 0;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .stat-card {
        padding: 1.5rem;
    }

    .stat-value {
        font-size: 2.5rem;
    }

    .stat-label {
        font-size: 1.1rem;
    }

    /* 服务卡片 */
    .services {
        padding: 4rem 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .service-card {
        padding: 2rem;
    }

    .service-icon {
        font-size: 2.5rem;
    }

    .service-title {
        font-size: 1.25rem;
    }

    /* 技术优势 */
    .advantages {
        padding: 4rem 0;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .advantage-card {
        padding: 2rem;
    }

    .advantage-icon {
        font-size: 3rem;
    }

    .advantage-title {
        font-size: 1.25rem;
    }

    /* 客户评价 */
    .reviews {
        padding: 4rem 0;
    }

    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .review-card {
        padding: 2rem;
    }

    /* FAQ */
    .faq {
        padding: 4rem 0;
    }

    .faq-question {
        font-size: 1rem;
        padding: 1rem;
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        opacity: 0;
    }
    
    .faq-item.active .faq-answer {
        max-height: 1000px;
        padding: 0;
        opacity: 1;
    }
    
    .faq-answer p,
    .faq-answer ul,
    .faq-answer ol {
        padding: 1rem 1rem 0 1rem;
        margin: 0;
        transition: opacity 0.3s ease-out 0.1s;
        opacity: 0;
    }
    
    .faq-answer p:last-child,
    .faq-answer ul:last-child,
    .faq-answer ol:last-child {
        padding-bottom: 1rem;
    }
    
    .faq-item.active .faq-answer p,
    .faq-item.active .faq-answer ul,
    .faq-item.active .faq-answer ol {
        opacity: 1;
    }

    /* 联系表单 */
    .contact {
        padding: 4rem 0;
    }

    .contact-form {
        max-width: 100%;
    }

    .form-group input,
    .form-group textarea {
        font-size: 1rem;
        padding: 0.875rem;
    }

    /* 页脚 */
    .footer {
        padding: 3rem 0 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

    .footer-description {
        font-size: 0.9rem;
    }

    .footer-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .footer-links li {
        margin-bottom: 0.5rem;
    }

    .footer-bottom {
        font-size: 0.9rem;
    }

    .pricing-card.featured {
        transform: none;
    }
}

@media (max-width: 480px) {
    /* 导航栏 */
    .navbar {
        padding: 0.75rem 0;
    }

    .nav-brand a {
        font-size: 1.1rem;
        gap: 0.4rem;
    }

    .nav-brand .logo-img {
        height: 1.5rem;
    }

    /* 轮播图 */
    .hero-carousel {
        height: 70vh;
        min-height: 450px;
        max-height: 600px;
        margin-top: 60px;
    }

    .hero-title {
        font-size: 1.75rem;
        line-height: 1.2;
    }

    .hero-title p {
        font-size: 1.25rem;
        margin-top: 0.5rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
        padding: 0 5px;
    }

    .promo-badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
        gap: 0.25rem;
        margin-bottom: 1rem;
    }

    .carousel-btn {
        width: 35px;
        height: 35px;
    }

    .carousel-prev {
        left: 5px;
    }

    .carousel-next {
        right: 5px;
    }

    .indicator {
        width: 8px;
        height: 8px;
    }

    .indicator.active {
        width: 24px;
    }

    .slide-content {
        padding: 0 10px;
    }

    /* 内容区域 */
    .container {
        padding: 0 15px;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 0.95rem;
    }

    /* 功能区域 */
    .features {
        padding: 3rem 0;
    }

    .feature-section {
        gap: 1.5rem;
        margin-bottom: 3rem;
    }

    .feature-title {
        font-size: 1.75rem;
    }

    .feature-description {
        font-size: 0.95rem;
    }

    .feature-list li {
        font-size: 0.95rem;
        padding-left: 1.25rem;
    }

    /* 统计卡片 */
    .stats-comparison {
        padding: 2.5rem 0;
    }

    .stat-card {
        padding: 1.25rem;
    }

    .stat-value {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 1rem;
    }

    /* 服务卡片 */
    .services {
        padding: 3rem 0;
    }

    .service-card {
        padding: 1.5rem;
    }

    .service-icon {
        font-size: 2rem;
    }

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

    .service-description {
        font-size: 0.9rem;
    }

    /* 技术优势 */
    .advantages {
        padding: 3rem 0;
    }

    .advantage-card {
        padding: 1.5rem;
    }

    .advantage-icon {
        font-size: 2.5rem;
    }

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

    .advantage-description {
        font-size: 0.9rem;
    }

    /* 客户评价 */
    .reviews {
        padding: 3rem 0;
    }

    .review-card {
        padding: 1.5rem;
    }

    .review-text {
        font-size: 0.95rem;
    }

    /* FAQ */
    .faq {
        padding: 3rem 0;
    }

    .faq-question {
        font-size: 0.95rem;
        padding: 0.875rem;
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        opacity: 0;
        font-size: 0.9rem;
    }
    
    .faq-item.active .faq-answer {
        max-height: 1000px;
        padding: 0;
        opacity: 1;
    }
    
    .faq-answer p,
    .faq-answer ul,
    .faq-answer ol {
        padding: 0.875rem 0.875rem 0 0.875rem;
        margin: 0;
        transition: opacity 0.3s ease-out 0.1s;
        opacity: 0;
    }
    
    .faq-answer p:last-child,
    .faq-answer ul:last-child,
    .faq-answer ol:last-child {
        padding-bottom: 0.875rem;
    }
    
    .faq-item.active .faq-answer p,
    .faq-item.active .faq-answer ul,
    .faq-item.active .faq-answer ol {
        opacity: 1;
    }

    /* 联系表单 */
    .contact {
        padding: 3rem 0;
    }

    .form-group input,
    .form-group textarea {
        font-size: 0.95rem;
        padding: 0.75rem;
    }

    /* 页脚 */
    .footer {
        padding: 2.5rem 0 1.5rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

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

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* 渐变装饰元素（参考 yavar.ai） */
.gradient-decoration {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(147, 51, 234, 0.3), transparent 70%);
    pointer-events: none;
    filter: blur(60px);
    z-index: 0;
}

/* 增强卡片悬停效果 */
.stat-card,
.service-card,
.pricing-card,
.review-card {
    position: relative;
    overflow: hidden;
}

.stat-card::before,
.service-card::before,
.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(147, 51, 234, 0.1), transparent);
    transition: left 0.5s;
}

.stat-card:hover::before,
.service-card:hover::before,
.pricing-card:hover::before {
    left: 100%;
}

/* 增强按钮效果 */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::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 0.6s, height 0.6s;
}

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

.btn-primary span {
    position: relative;
    z-index: 1;
}

/* 导航栏增强 - 移除重复样式 */

/* 文本高亮效果 */
.highlight-text {
    background: linear-gradient(135deg, #9333EA, #A855F7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 紫色发光效果 */
.glow-purple {
    box-shadow: 0 0 20px rgba(147, 51, 234, 0.5);
}

.glow-purple:hover {
    box-shadow: 0 0 30px rgba(147, 51, 234, 0.7);
}