:root {
    
    --primary-color: #18A2B7;
    --primary-dark: #0C7C8A;
    --primary-light: #8CE4F0;
    --secondary-color: #6C63FF;

    --dark: #1A1A2E;
    --medium-dark: #2D2D42;
    --medium: #444461;
    --gray: #777;
    --light-gray: #f4f4f8;
    --white: #ffffff;

    --success: #4CAF50;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #0DCAF0;

    --font-primary: 'Roboto', 'Microsoft YaHei', sans-serif;
    --font-size-base: 16px;

    --shadow-small: 0 2px 5px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 5px 15px rgba(0, 0, 0, 0.1);
    --shadow-large: 0 15px 35px rgba(0, 0, 0, 0.1);

    --border-radius-small: 4px;
    --border-radius-medium: 8px;
    --border-radius-large: 12px;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2.5rem;
    --spacing-xxl: 4rem;

    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html, body {
    overflow-x: hidden;
    width: 100%;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    padding-top: 80px; 
}

img {
    max-width: 100%;
    height: auto;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1280px; /* 从1200px增加到1280px，给导航栏更多空间 */
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    position: relative;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-small);
    height: 80px; 
    display: flex;
    align-items: center;
}

.navbar.scrolled {
    padding: var(--spacing-sm) 0;
    background-color: rgba(255, 255, 255, 0.98);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar-brand {
    display: flex;
    align-items: center;
    height: 60px;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

.logo {
    width: 40px;
    height: 40px;
    margin-right: 10px;
    object-fit: contain;
}

.brand-text {
    font-size: 24px;
    font-weight: 700;
    color: #333;
    line-height: 1;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--medium);
    font-weight: 500;
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

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

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

.navbar-auth {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: nowrap;
}

.navbar-auth .btn {
    padding: 0.5rem 1rem !important;
    font-size: 0.9rem !important;
    white-space: nowrap !important;
    min-width: 100px !important;
    max-width: 200px !important; /* 允许更宽的用户名显示 */
    text-align: center !important;
    flex: 0 0 auto !important; /* 改为auto，允许根据内容自适应 */
    height: 40px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-sizing: border-box !important;
    overflow: hidden !important; /* 防止内容溢出 */
    text-overflow: ellipsis !important; /* 文本溢出时显示省略号 */
    position: relative !important;
}

/* 用户中心按钮特殊处理 - 限制文本长度 */
#userCenterBtn {
    max-width: 180px !important;
    overflow: hidden !important; /* 防止内容溢出 */
    text-overflow: ellipsis !important; /* 文本溢出时显示省略号 */
}

#userCenterBtn > i {
    flex-shrink: 0 !important; /* 图标不收缩 */
    margin-right: 4px !important;
}

/* 用户名文本溢出处理 - 统一处理所有可能的用户名容器 */
#userCenterBtn > span,
#userCenterBtn #userName {
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    max-width: calc(180px - 60px) !important; /* 按钮最大宽度 - 图标和padding */
    display: inline-block !important;
    white-space: nowrap !important;
    vertical-align: middle !important;
}

.navbar-auth .btn i {
    margin-right: 4px;
    flex-shrink: 0; /* 图标不收缩 */
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    cursor: pointer;
    margin-left: auto;
    z-index: 99999;
    position: relative;
}

.mobile-menu-btn span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: #333;
    border-radius: 3px;
    transition: all 0.3s ease;
    position: absolute;
    left: 0;
}

.mobile-menu-btn span:nth-child(1) {
    top: 0;
}

.mobile-menu-btn span:nth-child(2) {
    top: 9px;
}

.mobile-menu-btn span:nth-child(3) {
    top: 18px;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg);
    top: 9px;
    background-color: #E53935;
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg);
    top: 9px;
    background-color: #E53935;
}

/* 中等屏幕优化（992px-1280px） */
@media screen and (max-width: 1280px) and (min-width: 993px) {
    .navbar-auth {
        gap: 0.4rem;
    }
    
    .navbar-auth .btn {
        padding: 0.45rem 0.85rem !important;
        font-size: 0.85rem !important;
        min-width: 80px !important;
        max-width: 160px !important; /* 允许更宽的用户名显示 */
        height: 36px !important;
        flex: 0 0 auto !important; /* 改为auto，允许根据内容自适应 */
        box-sizing: border-box !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
    }
    
    #userCenterBtn {
        max-width: 150px !important;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .nav-links a {
        font-size: 0.9rem;
    }
}

@media screen and (max-width: 992px) {
    .navbar-menu, .navbar-auth {
        display: none !important;
    }
    
    .mobile-menu-btn {
        display: flex !important;
    }
    
    .navbar {
        padding: 0 20px;
        height: 70px;
    }
    
    .navbar-logo img {
        height: 40px;
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 10px rgba(24, 162, 183, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0f96ab, #0b6976);
    box-shadow: 0 6px 15px rgba(24, 162, 183, 0.4);
    transform: translateY(-2px);
    color: var(--white);
}

.btn-danger, a.btn-danger, .hero-btns .btn-danger {
    background: linear-gradient(135deg, #dc3545, #c82333) !important;
    color: white !important;
    border: none;
    box-shadow: 0 4px 8px rgba(220, 53, 69, 0.3);
    transition: all 0.3s ease;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-danger:hover, a.btn-danger:hover, .hero-btns .btn-danger:hover {
    background: linear-gradient(135deg, #c82333, #bd2130) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(220, 53, 69, 0.4);
    color: white !important;
}

.btn-success {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    color: white;
    border: none;
    box-shadow: 0 4px 8px rgba(46, 204, 113, 0.3);
    transition: all 0.3s ease;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-success:hover {
    background: linear-gradient(135deg, #27ae60, #219653);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(46, 204, 113, 0.4);
    color: white;
}

.btn-outline {
    background-color: transparent;
    color: var(--medium);
    border: 2px solid rgba(119, 119, 119, 0.25) !important; /* 确保边框显示 */
}

.btn-outline:hover {
    border-color: var(--primary-color) !important; /* 确保hover时边框颜色改变 */
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* 确保导航栏中的 btn-outline 也有边框 */
.navbar-auth .btn-outline {
    border: 2px solid rgba(119, 119, 119, 0.25) !important;
}

.navbar-auth .btn-outline:hover {
    border-color: var(--primary-color) !important;
    color: var(--primary-color);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

.hero {
    position: relative;
    padding: var(--spacing-xxl) 0;
    overflow: hidden;
    color: var(--white);
    min-height: 700px;
    display: flex;
    align-items: center;
    width: 100%;
}

.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}

#hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translateX(-50%) translateY(-50%);
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(26, 26, 46, 0), rgba(26, 26, 46, 0));
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.hero-content {
    flex: 1;
    max-width: 580px;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(90deg, #FFFFFF, #8CE4F0);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    line-height: 1.7;
}

.hero-btns {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: calc(var(--spacing-xl) + 0.5rem);
}

.hero-btns .btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.hero-btns .btn-lg:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.hero-btns .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)) !important;
}

.hero-btns .btn-info {
    background: linear-gradient(135deg, #02B875, #018f5d) !important;
}

/* 版本信息展示样式 - 精简优化版 */
.version-info-box {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 10px;
    padding: 16px 20px;
    margin: 18px 0 22px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.version-header {
    text-align: center;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.version-platform {
    font-size: 0.82rem;
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.version-details {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin: 12px 0;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 8px;
}

.version-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.version-label {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 500;
}

.version-value {
    font-size: 0.88rem;
    color: #fff;
    font-weight: 600;
}

.version-divider {
    width: 1px;
    height: 30px;
    background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.35), transparent);
}

.version-download-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.btn-version {
    padding: 8px 18px;
    font-size: 0.85rem;
    font-weight: 600;
    background: linear-gradient(135deg, #2ecc71, #27ae60) !important;
    box-shadow: 0 3px 8px rgba(46, 204, 113, 0.25);
}

.btn-version:hover {
    background: linear-gradient(135deg, #27ae60, #219653) !important;
    box-shadow: 0 5px 12px rgba(46, 204, 113, 0.35);
    transform: translateY(-1px);
}

.version-link {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.2s ease;
    font-weight: 500;
}

.version-link:hover {
    color: #fff;
    text-decoration: underline;
}

.version-separator {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8rem;
}

.version-decoration {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 1.5px;
}

.mac-version-notice {
    margin-top: 8px !important;
    font-size: 0.72rem !important;
    color: rgba(255, 255, 255, 0.65) !important;
    text-align: center;
}

.delay-1-5 {
    animation-delay: 0.4s;
}

@media (max-width: 768px) {
    .version-info-box {
        padding: 14px 15px;
        margin: 16px 0 20px;
        background: rgba(255, 255, 255, 0.2);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
    }

    .version-platform {
        font-size: 0.78rem;
    }

    .version-details {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: space-around;
        gap: 0;
        margin: 10px 0;
        padding: 10px 8px;
        background: rgba(255, 255, 255, 0.08);
        border-radius: 8px;
    }

    .version-item {
        gap: 4px;
        flex: 1;
    }

    .version-label {
        font-size: 0.68rem;
    }

    .version-value {
        font-size: 0.82rem;
    }

    .version-divider {
        width: 1px;
        height: 28px;
        background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.35), transparent);
    }

    .version-download-links {
        flex-direction: row;
        gap: 8px;
        align-items: center;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .btn-version {
        padding: 7px 16px;
        font-size: 0.8rem;
    }

    .version-separator {
        display: inline;
        font-size: 0.75rem;
    }
    
    .version-link {
        font-size: 0.72rem;
    }

    .version-decoration {
        display: none;
    }
    
    .mac-version-notice {
        font-size: 0.68rem !important;
        margin-top: 6px !important;
    }

    .btn-version {
        flex: 0 0 auto;
        min-width: auto;
        max-width: 180px;
        padding: 10px 18px;
        font-size: 0.9rem;
        white-space: nowrap;
    }

    .version-link {
        text-align: center;
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .hero-btns {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }

    .hero-btns .btn {
        width: 100%;
    }
}

.hero-image {
    flex: 1;
    position: relative;
    max-width: 600px;
    transform: perspective(1000px) rotateY(-5deg);
}

.hero-image::before,
.hero-image::after {
    display: none;
}

.custom-badge-container {
    position: absolute;
    bottom: -10px;
    right: -10px;
    z-index: 10;
    width: 70px;
    height: 70px;
    animation: badgeFloat 3s ease-in-out infinite;
}

.custom-badge-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0));
    transform-origin: center bottom;
    animation: badgeRotate 8s linear infinite;
}

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

@keyframes badgeRotate {
    0% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(5deg);
    }
    75% {
        transform: rotate(-5deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-large);
    transform: scale(1.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-image img:hover {
    transform: scale(1.12) perspective(1000px) rotateY(-3deg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.floating-stats {
    position: absolute;
    display: flex;
    gap: var(--spacing-md);
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
}

.stat-item {
    background: rgba(255, 255, 255, 0.95);
    padding: 12px 18px;
    border-radius: var(--border-radius-medium);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
    text-align: center;
    min-width: 110px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.stat-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.stat-label {
    display: block;
    font-size: 0.82rem;
    color: var(--medium);
    margin-top: 2px;
}

.clients {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-gray);
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--gray);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.client-logos {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.client-logo {
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.client-logo:hover {
    opacity: 1;
}

.client-logo img {
    height: 40px;
    filter: grayscale(100%);
    transition: filter var(--transition-fast);
}

.client-logo:hover img {
    filter: grayscale(0%);
}

.features {
    padding: var(--spacing-xxl) 0;
    width: 100%;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.feature-card {
    background-color: var(--white);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(24, 162, 183, 0.15);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.feature-card p {
    color: var(--medium);
}

.feature-showcase {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xxl);
}

.feature-showcase-image {
    flex: 1;
    position: relative;
}

.feature-showcase-image img {
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
}

.feature-badge {
    position: absolute;
    top: -20px;
    right: -20px;
    background: var(--white);
    box-shadow: var(--shadow-small);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.badge-icon {
    color: var(--primary-color);
}

.badge-text {
    font-weight: 500;
    color: var(--medium);
}

.feature-showcase-content {
    flex: 1;
}

.feature-showcase-content h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.feature-showcase-content p {
    color: var(--medium);
    margin-bottom: var(--spacing-lg);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--medium);
}

.feature-list i {
    color: var(--success);
}

.performance {
    padding: var(--spacing-xxl) 0;
    background-color: var(--light-gray);
    width: 100%;
}

.performance-comparison {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.performance-chart {
    position: relative;
    height: 350px;
    margin-bottom: var(--spacing-xl);
    overflow: visible;
    width: 100%;
}

.performance-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.stat-card {
    background-color: var(--white);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    text-align: center;
    min-width: 200px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    top: 0;
    opacity: 0;
    transform: translateY(30px);
    animation: statCardFadeIn 0.8s forwards;
}

.stat-card:nth-child(1) {
    animation-delay: 0.1s;
}

.stat-card:nth-child(2) {
    animation-delay: 0.3s;
}

.stat-card:nth-child(3) {
    animation-delay: 0.5s;
}

.stat-card:hover {
    box-shadow: 0 12px 35px rgba(24, 162, 183, 0.15);
    transform: translateY(-8px);
}

.stat-card .stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    position: relative;
    display: inline-block;
}

.stat-card .stat-value::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    transform: translateX(-50%);
    transition: width 0.5s ease;
}

.stat-card:hover .stat-value::after {
    width: 80%;
}

.stat-card .stat-label {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.stat-card .stat-desc {
    font-size: 0.9rem;
    color: var(--gray);
}

.pricing {
    padding: var(--spacing-xxl) 0;
    width: 100%;
}

.pricing-plans {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.pricing-plan {
    flex: 1;
    min-width: 300px;
    max-width: 350px;
    background-color: var(--white);
    border-radius: var(--border-radius-large);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.pricing-plan:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(24, 162, 183, 0.15);
}

.pricing-plan.popular {
    transform: scale(1.05);
    border: 2px solid var(--primary-color);
    z-index: 1;
}

.pricing-plan.popular:hover {
    transform: scale(1.05) translateY(-8px);
    box-shadow: 0 12px 35px rgba(24, 162, 183, 0.15);
}

.popular-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.25rem 1rem;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 0 0 0 var(--border-radius-medium);
}

.plan-header {
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.plan-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.plan-price {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.price-label {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    position: relative;
    display: inline-block;
}

.price-label:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    opacity: 0.3;
}

.period {
    font-size: 1rem;
    color: var(--gray);
    margin-top: var(--spacing-sm);
    display: block;
}

.plan-features {
    padding: var(--spacing-lg);
}

.plan-features ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--medium);
}

.plan-features li i {
    color: var(--success);
}

.plan-features li.disabled {
    opacity: 0.5;
}

.plan-features li.disabled i {
    color: var(--danger);
}

.plan-footer {
    padding: 0 var(--spacing-lg) var(--spacing-xl);
}

.enterprise-plan {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background-color: var(--light-gray);
    border-radius: var(--border-radius-large);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.enterprise-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.enterprise-content p {
    color: var(--medium);
}

.testimonials {
    padding: var(--spacing-xxl) 0;
    background-color: var(--light-gray);
    width: 100%;
}

.testimonial-slider {
    position: relative;
    max-width: 800px;
    margin: var(--spacing-xl) auto 0;
    height: 300px;
    cursor: pointer;
    touch-action: pan-y;
    user-select: none;
    -webkit-user-select: none;
}

.testimonial-slide {
    background-color: var(--white);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    padding: var(--spacing-xl);
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: translateX(50px);
    transition: all var(--transition-medium);
    display: flex;
    flex-direction: column;
}

.testimonial-slide.active {
    opacity: 1;
    transform: translateX(0);
}

.testimonial-content {
    flex: 1;
    position: relative;
}

.quote-icon {
    position: absolute;
    top: -20px;
    left: -10px;
    font-size: 2rem;
    color: rgba(24, 162, 183, 0.1);
}

.testimonial-content p {
    font-size: 1.1rem;
    color: var(--medium);
    margin: 0 0 var(--spacing-md);
    line-height: 1.7;
}

.testimonial-rating {
    display: flex;
    gap: 4px;
    color: #FFC107;
    margin-bottom: var(--spacing-md);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    margin-right: var(--spacing-md);
    object-fit: cover;
    border: 2px solid rgba(255, 255, 255, 0.7);
    box-shadow: var(--shadow-small);
}

.author-name {
    font-weight: 500;
    color: var(--dark);
}

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

.testimonial-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(24, 162, 183, 0.2);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-dot.active, .nav-dot:hover {
    background-color: var(--primary-color);
}

.faq {
    padding: var(--spacing-xxl) 0;
    width: 100%;
}

.faq-list {
    max-width: 800px;
    margin: var(--spacing-xl) auto;
}

.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: var(--spacing-md);
}

.faq-question {
    padding: var(--spacing-md) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question h3 {
    font-size: 1.2rem;
    color: var(--dark);
}

.faq-icon {
    color: var(--primary-color);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 0 var(--spacing-md);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-answer p {
    color: var(--medium);
}

.more-questions {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.more-questions p {
    margin-bottom: var(--spacing-md);
    color: var(--medium);
}

.try-free {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--dark), var(--medium-dark));
    color: var(--white);
    width: 100%;
}

.try-free-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.try-free h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.try-free p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.trial-form {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-control {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-medium);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transition: all var(--transition-fast);
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: rgba(255, 255, 255, 0.15);
}

.form-text {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    text-align: left;
    margin-top: var(--spacing-xs);
}

.trial-result {
    min-height: 50px;
}

.contact {
    padding: var(--spacing-xxl) 0;
    width: 100%;
}

.contact-wrapper {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
}

.contact-details h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.contact-details p {
    color: var(--medium);
}

.contact-form {
    flex: 2;
    min-width: 400px;
    background-color: var(--white);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-medium);
}

.contact-form .form-group {
    margin-bottom: var(--spacing-md);
}

.contact-form label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--medium);
    font-weight: 500;
}

.contact-form .form-control {
    background-color: var(--light-gray);
    border: 1px solid rgba(0, 0, 0, 0.05);
    color: var(--dark);
}

.contact-form .form-control::placeholder {
    color: var(--gray);
}

.contact-form .form-control:focus {
    border-color: var(--primary-color);
    background-color: var(--white);
}

.footer {
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
    background-color: var(--dark);
    color: var(--white);
    margin-top: var(--spacing-xxl);
    position: relative;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 2rem;
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 200px;
    max-width: 250px;
}

.footer-logo-text {
    display: flex;
    flex-direction: column;
    margin-left: var(--spacing-sm);
    color: var(--white);
}

.footer-logo .brand-text {
    color: var(--white);
}

.tagline {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-description {
    flex: 2;
    min-width: 300px;
    max-width: 500px;
    color: var(--light-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    justify-content: space-between;
}

.footer-links-column {
    min-width: 100px;
}

.footer-links-column h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

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

.footer-links-column li {
    margin-bottom: 0.6rem;
}

.footer-links-column a {
    color: var(--light-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.9rem;
}

.footer-links-column a:hover {
    color: var(--white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
    position: relative;
    padding-top: 15px;
    border-top: none;
}

.footer-bottom::before,
.footer-bottom::after {
    display: none;
}

.copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    flex: 1;
    text-align: left;
}

.icp-registration {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    flex: 1;
    text-align: center;
    padding: 12px 0;
    background-color: transparent;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.4;
    border: none;
    box-shadow: none;
}

.beian-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
    padding: 0 15px;
}

.beian-separator {
    margin: 0 8px;
    color: rgba(255, 255, 255, 0.4);
}

.icp-registration a {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    transition: color 0.2s ease;
    padding: 2px 0;
}

.icp-registration a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.icp-registration img {
    vertical-align: middle;
    margin-right: 4px;
    height: 16px;
    display: inline-block;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    flex: 1;
    justify-content: flex-end;
}

.social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-fast);
}

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

.floating-support {
    position: fixed;
    right: 20px;
    bottom: 30px;
    z-index: 500;
}

.support-button {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.support-button:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

.support-button i {
    font-size: 1.2rem;
}

.support-button span {
    font-size: 12px;
    margin-top: 2px;
}

.back-to-top {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 500;
}

#backToTopBtn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

#backToTopBtn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#backToTopBtn:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

@media (max-width: 1200px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero p {
        font-size: 1.05rem;
    }
    
    .feature-showcase {
        flex-direction: column;
    }
}

@media (max-width: 992px) {
    .navbar-menu, .navbar-auth {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
        margin-left: 20px;
        z-index: 99999;
    }
    
    .mobile-menu-btn span {
        height: 2px;
        background-color: #333;
        border-radius: 4px;
        transition: all 0.3s ease;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
        background-color: #E53935;
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
        background-color: #E53935;
    }

    .navbar {
        padding: 10px 0;
    }
    
    .navbar-brand .logo {
        width: 35px;
        height: 35px;
    }
    
    .navbar-brand .brand-text {
        font-size: 20px;
    }

    .mobile-menu {
        border-top: 3px solid #E53935 !important; 
        max-width: 80%; 
        right: 0;
    }
    
    .mobile-menu .nav-links li a.active {
        border-right: 3px solid #E53935 !important; 
        color: #E53935 !important;
        background-color: rgba(229, 57, 53, 0.05) !important;
    }
    
    .mobile-menu .nav-links li a:hover {
        color: #E53935 !important;
    }

    .mobile-menu .nav-links li a {
        font-size: 16px !important;
        padding: 15px 20px !important;
        text-align: right !important;
    }

    .mobile-menu {
        transform: translateY(-10px);
        opacity: 0;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    
    .mobile-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
        margin-bottom: var(--spacing-xl);
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .hero-image {
        max-width: 100%;
    }
    
    .feature-showcase-content {
        text-align: center;
    }
    
    .feature-list {
        justify-content: center;
    }
    
    .contact-wrapper {
        flex-direction: column;
    }
    
    .contact-form {
        min-width: auto;
    }
    
    .footer-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-logo, .footer-description, .footer-links {
        min-width: 100%;
        justify-content: center;
        max-width: 100%;
    }
    
    .footer-links {
        gap: 2rem;
        justify-content: space-around;
    }
    
    .footer-links-column {
        min-width: auto;
    }
    
    .footer-links-column h3 {
        font-size: 1rem;
    }
    
    .footer-description {
        margin: var(--spacing-lg) 0;
        order: 2;
    }
    
    .footer-links {
        order: 3;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.4rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .testimonial-slide {
        flex-direction: column;
    }
    
    .testimonial-slider {
        height: auto;
    }
    
    .testimonial-slide.active {
        position: relative;
    }
    
    .performance-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .footer-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-logo, .footer-description, .footer-links {
        min-width: 100%;
        justify-content: center;
        max-width: 100%;
    }
    
    .footer-links {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    
    .footer-links-column {
        min-width: auto;
    }
    
    .footer-links-column h3 {
        font-size: 1rem;
    }
    
    .footer-description {
        margin: var(--spacing-lg) 0;
        order: 2;
    }
    
    .footer-links {
        order: 3;
    }
    
    .performance-features {
        flex-direction: column-reverse;
    }
    
    .performance-features .feature-list {
        margin-right: 0;
        margin-top: 1.5rem;
        width: 100%;
    }
    
    .performance-content {
        width: 100%;
    }
    
    .performance-chart {
        height: 450px;
        margin-bottom: 60px;
    }
    
    .custom-chart-legend {
        margin-bottom: 20px;
    }
    
    #hero-video {
        display: block;
    }
    
    .hero-video-bg {
        background: none;
    }
}

@media (max-width: 576px) {
    .hero-btns {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .hero-btns .top-row {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-md);
    }

    .hero-btns .top-row a {
        width: 100%;
    }

    .hero-btns .bottom-row a {
        width: 100%;
    }

    .contact-options a {
        width: 100%;
    }
    
    .feature-cards {
        grid-template-columns: 1fr;
    }
    
    .pricing-plan {
        min-width: 100%;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .copyright, .icp-registration {
        text-align: center;
        flex-basis: 100%;
    }
    
    .icp-registration {
        margin-top: 10px;
        margin-bottom: 10px;
        padding: 12px 5px;
        background-color: transparent;
        box-shadow: none;
    }
    
    .beian-container {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .beian-separator {
        display: none;
    }
    
    .social-links {
        justify-content: center;
    }

    .qq-contact {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    .btn-copy {
        margin-left: 0;
        margin-top: 0.5rem;
    }

    .qq-value {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .btn-copy {
        width: 100%;
    }

    .performance-chart {
        height: 380px;
    }
}

.performance-features {
    display: flex;
    margin-top: 3rem;
    padding: 2rem;
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.performance-features .feature-list {
    flex: 1;
    min-width: 300px;
    margin-right: 2rem;
}

.performance-content {
    flex: 1;
    min-width: 300px;
}

.performance-content h3 {
    color: var(--color-primary);
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.performance-content p {
    color: var(--color-text);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .performance-features {
        flex-direction: column-reverse;
    }
    
    .performance-features .feature-list {
        margin-right: 0;
        margin-top: 1.5rem;
        width: 100%;
    }
    
    .performance-content {
        width: 100%;
    }
}

.back-to-top {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 500;
}

#backToTopBtn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

#backToTopBtn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#backToTopBtn:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

.contact-options {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-top: 2rem;
    width: 100%;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.contact-options .btn-primary {
    width: 100%;
    justify-content: center;
    text-align: center;
}

.contact-options .btn-lg {
    padding: 0.8rem 1.5rem;
}

.contact-options .btn-lg i {
    margin-right: 0.5rem;
}

.qq-contact {
    display: flex;
    align-items: center;
    background: var(--color-bg-light);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    gap: 0.5rem;
    box-shadow: var(--shadow-soft);
}

.qq-number {
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 0.5rem;
}

.btn-copy {
    margin-left: 1rem;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

@media (max-width: 576px) {
    .qq-contact {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    .btn-copy {
        margin-left: 0;
        margin-top: 0.5rem;
    }
}

.qq-contact-box {
    width: 100%;
}

.qq-contact {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--color-bg-light);
    padding: 1.2rem;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    box-shadow: var(--shadow-soft);
    width: 100%;
}

.qq-label {
    display: flex;
    align-items: center;
    margin-bottom: 0.8rem;
    color: var(--color-text);
}

.qq-label i {
    margin-right: 0.5rem;
    color: var(--primary-color);
    font-size: 1.3rem;
}

.qq-value {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    width: 100%;
}

.qq-number {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.3rem;
}

.btn-copy {
    padding: 0.5rem 1rem;
    white-space: nowrap;
}

@media (max-width: 576px) {
    .qq-value {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .btn-copy {
        width: 100%;
    }
}

.animate-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

.hero-image.animate-in {
    opacity: 0;
    transform: translateY(40px) perspective(1000px) rotateY(-5deg);
    animation: fadeInUpImage 1s forwards;
    animation-delay: 0.6s;
}

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

@keyframes fadeInUpImage {
    to {
        opacity: 1;
        transform: translateY(0) perspective(1000px) rotateY(-5deg);
    }
}

@keyframes statCardFadeIn {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.trial-highlight-box {
    display: flex;
    background: #1a2e59;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    margin: 2rem 0;
    color: #fff;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.trial-highlight-box::before {
    display: none; 
}

.trial-highlight-icon {
    flex: 0 0 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #182a4e;
    font-size: 3rem;
    color: #25c5e3;
    position: relative;
    z-index: 1;
}

.trial-highlight-icon i {
    filter: drop-shadow(0 0 3px rgba(37, 197, 227, 0.3));
    animation: gentlePulse 3s infinite;
}

.trial-highlight-content {
    flex: 1;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.trial-highlight-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
    color: #fff;
    display: flex;
    align-items: center;
}

.trial-highlight-content p {
    margin-bottom: 1rem;
    line-height: 1.5;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

.highlight-text {
    font-weight: 700;
    color: #25c5e3;
    position: relative;
    display: inline-block;
}

.highlight-text::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 1px;
    background: #25c5e3;
}

.trial-feature-list {
    list-style: none;
    padding: 0.5rem 0 1rem 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 2rem;
}

.trial-feature-list li {
    display: flex;
    align-items: center;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
}

.trial-feature-list li i {
    color: #25c5e3;
    margin-right: 0.5rem;
    font-size: 1rem;
}

.contact-note {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-top: 0.8rem;
    font-style: normal;
}

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

@media (max-width: 768px) {
    .trial-highlight-box {
        flex-direction: column;
    }
    
    .trial-highlight-icon {
        flex: 0 0 auto;
        padding: 1.5rem 0;
    }
    
    .trial-feature-list {
        grid-template-columns: 1fr;
    }
}

.view-switcher {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    display: none;
}

.btn-view-switch {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    border: none;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.2);
    outline: none;
    position: relative;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    transform: scale(1);
}

.grid-icon {
    width: 20px;
    height: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 4px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.grid-icon span {
    background-color: white;
    border-radius: 1px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-view-switch:hover {
    transform: scale(1.1);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.btn-view-switch:active {
    transform: scale(0.95);
}

.btn-view-switch.active {
    background: #ffffff;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
}

.btn-view-switch.active .grid-icon span {
    background-color: var(--primary-color);
}

.btn-view-switch.active .grid-icon {
    transform: rotate(45deg);
}

.view-menu {
    position: fixed;
    right: 85px; 
    top: 50%;
    transform: translateY(-50%) scale(0.95);
    background: white;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    width: 200px;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: right center;
    pointer-events: none;
}

.view-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) scale(1);
    pointer-events: auto;
}

.view-menu-item {
    padding: 15px;
    border-bottom: 1px solid #f0f0f0;
    color: #333;
    font-size: 16px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    transform: translateX(15px);
    opacity: 0;
    position: relative;
    overflow: hidden;
}

.view-menu.show .view-menu-item {
    transform: translateX(0);
    opacity: 1;
}

.view-menu.show .view-menu-item:nth-child(1) {
    transition-delay: 0.05s;
}

.view-menu.show .view-menu-item:nth-child(2) {
    transition-delay: 0.1s;
}

.view-menu.show .view-menu-item:nth-child(3) {
    transition-delay: 0.15s;
}

.view-menu.show .view-menu-item:nth-child(4) {
    transition-delay: 0.2s;
}

.view-menu-item:last-child {
    border-bottom: none;
}

.view-menu-item:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    transform: translateX(-4px);
    transition: transform 0.3s ease;
}

.view-menu-item:hover {
    background: #f8f8f8;
    padding-left: 20px;
}

.view-menu-item:hover:before {
    transform: translateX(0);
}

.view-menu-item i {
    margin-right: 10px;
    color: var(--primary-color);
    width: 20px;
    text-align: center;
    transition: transform 0.3s ease;
}

.view-menu-item:hover i {
    transform: scale(1.2);
}

.view-menu::before {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%) scale(0);
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 8px solid white;
    transition: transform 0.3s ease;
    transform-origin: center;
}

.view-menu.show::before {
    transform: translateY(-50%) scale(1);
}

@media (max-width: 992px) {
    .view-switcher {
        display: block;
    }

    body.desktop-view .view-switcher {
        display: none;
    }
}

body.desktop-view {
    min-width: 1200px;
    overflow-x: auto;
}

body.desktop-view .container {
    width: 1140px !important;
    max-width: 1140px !important;
}

@media (max-width: 1200px) {
    body.desktop-view .hero h1 {
        font-size: 3.5rem;
    }

    body.desktop-view .feature-showcase {
        flex-direction: row;
    }
}

@media (max-width: 992px) {
    body.desktop-view .navbar-menu {
        display: flex;
    }

    body.desktop-view .mobile-menu-btn {
        display: none;
    }

    body.desktop-view .hero .container {
        flex-direction: row;
    }

    body.desktop-view .hero-content {
        width: 50%;
    }

    body.desktop-view .hero-btns {
        flex-direction: row;
    }

    body.desktop-view .hero-image {
        width: 50%;
    }

    body.desktop-view .feature-showcase-content {
        padding-right: 3rem;
    }

    body.desktop-view .contact-wrapper {
        flex-direction: row;
    }

    body.desktop-view .contact-form {
        padding-left: 2rem;
    }

    body.desktop-view .footer-top {
        flex-direction: row;
    }
}

@media (max-width: 768px) {
    body.desktop-view .performance-features {
        flex-direction: row;
    }

    body.desktop-view .performance-features .feature-list {
        margin-right: 2rem;
        margin-top: 0;
        width: auto;
    }

    body.desktop-view #hero-video {
        display: block;
    }

    body.desktop-view .hero-video-bg {
        background: none;
    }
}

@media (max-width: 576px) {
    body.desktop-view .hero-btns {
        flex-direction: row;
        gap: var(--spacing-md);
    }
    
    body.desktop-view .feature-cards {
        grid-template-columns: repeat(3, 1fr);
    }
    
    body.desktop-view .footer-links {
        grid-template-columns: repeat(4, 1fr);
    }
    
    body.desktop-view .footer-bottom {
        flex-direction: row;
    }
}

.view-mode-tooltip {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    font-size: 16px;
    padding: 12px 20px;
    border-radius: 50px;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    font-weight: 500;
}

.view-mode-tooltip.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

a[data-link="purchase"] i {
    margin-right: 10px; 
}

.btn i {
    margin-right: 6px; 
}

.btn-info, a.btn-info, .hero-btns .btn-info {
    background: linear-gradient(135deg, #0DCAF0, #0b96af) !important;
    color: white !important;
    border: none;
    box-shadow: 0 4px 8px rgba(13, 202, 240, 0.3);
    transition: all 0.3s ease;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-info:hover, a.btn-info:hover, .hero-btns .btn-info:hover {
    background: linear-gradient(135deg, #11d8ff, #0ca4bf) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(13, 202, 240, 0.4);
    color: white !important;
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.toast {
    background-color: white;
    color: #333;
    border-radius: 5px;
    padding: 0;
    min-width: 280px;
    max-width: 350px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-content {
    display: flex;
    align-items: center;
    padding: 15px;
}

.toast-content i {
    margin-right: 12px;
    font-size: 1.2rem;
}

.toast-message {
    flex: 1;
    font-size: 0.95rem;
}

.toast-progress {
    height: 3px;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3));
    width: 100%;
}

.toast-success i {
    color: #28a745;
}

.toast-error i {
    color: #dc3545;
}

.toast-warning i {
    color: #ffc107;
}

.toast-info i {
    color: #17a2b8;
}

@media (max-width: 576px) {
    .toast-container {
        right: 10px;
        left: 10px;
        align-items: center;
    }
    
    .toast {
        min-width: auto;
        width: 100%;
    }
}

.custom-chart-legend {
    border: none;
    border-radius: 0;
    padding: 0 0 10px 0;
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    gap: 30px;
    background: transparent;
}

.legend-item {
    display: flex;
    align-items: center;
}

.legend-color {
    display: inline-block;
    width: 25px;
    height: 15px;
    margin-right: 8px;
}

.legend-text {
    font-size: 14px;
    color: #333;
}

@media (max-width: 576px) {
    .custom-chart-legend {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
        padding: 12px;
    }
    
    .legend-item {
        margin: 2px 0;
    }
    
    .legend-color {
        width: 20px;
        height: 12px;
    }
    
    .legend-text {
        font-size: 13px;
    }
}

/* 下载弹窗样式 */
.download-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
}

.download-modal.show {
    display: flex;
}

.download-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.download-modal-content {
    position: relative;
    background: var(--white);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-large);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.download-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    border-bottom: 1px solid var(--light-gray);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
}

.download-modal-header h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.download-modal-close {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
}

.download-modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

.download-modal-body {
    padding: 25px;
}

.download-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.download-option {
    display: flex;
    align-items: center;
    padding: 20px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius-medium);
    cursor: pointer;
    transition: var(--transition-medium);
    background: var(--white);
}

.download-option:hover {
    border-color: var(--primary-color);
    box-shadow: 0 5px 20px rgba(24, 162, 183, 0.1);
    transform: translateY(-2px);
}

.download-option-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    margin-right: 20px;
    color: var(--white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.download-option-content {
    flex: 1;
}

.download-option-content h4 {
    margin: 0 0 5px 0;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--dark);
}

.download-option-content p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--gray);
}

.download-option-action {
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: var(--transition-fast);
}

.download-option:hover .download-option-action {
    transform: translateX(5px);
}

/* 下载按钮样式调整 */
.download-btn {
    cursor: pointer;
    transition: var(--transition-medium);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* 响应式设计 */
@media (max-width: 576px) {
    .download-modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .download-modal-header {
        padding: 15px 20px;
    }
    
    .download-modal-header h3 {
        font-size: 1.1rem;
    }
    
    .download-modal-body {
        padding: 20px;
    }
    
    .download-option {
        padding: 15px;
    }
    
    .download-option-icon {
        width: 50px;
        height: 50px;
        margin-right: 15px;
        font-size: 1.3rem;
    }
    
    .download-option-content h4 {
        font-size: 1rem;
    }
    
    .download-option-content p {
        font-size: 0.85rem;
    }
}