/* ========================================
   星智拼上拼 - 官网样式表
   ======================================== */

/* 全局变量 */
:root {
    /* 主色调 */
    --primary-color: #0432cc;
    --primary-dark: #032499;
    --primary-light: #0540ff;
    
    /* 辅助色 */
    --secondary-color: #10B981;
    --accent-color: #F59E0B;
    --danger-color: #EF4444;
    
    /* 中性色 */
    --dark: #1F2937;
    --gray-dark: #374151;
    --gray: #6B7280;
    --gray-light: #D1D5DB;
    --light: #F3F4F6;
    --white: #FFFFFF;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #0432cc 0%, #0540ff 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 间距 */
    --section-padding: 100px 0;
    
    /* 动画 */
    --transition: all 0.3s ease-in-out;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-dark);
    background: var(--white);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--dark);
    font-weight: 700;
    line-height: 1.2;
}

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

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

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

.section {
    padding: var(--section-padding);
}

/* ========================================
   预加载动画
   ======================================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.preloader-inner {
    text-align: center;
}

.preloader-icon span {
    display: inline-block;
    width: 15px;
    height: 15px;
    margin: 0 5px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: preloader-bounce 1.4s infinite ease-in-out both;
}

.preloader-icon span:first-child {
    animation-delay: -0.32s;
}

.preloader-icon span:last-child {
    animation-delay: -0.16s;
}

@keyframes preloader-bounce {
    0%, 80%, 100% { 
        transform: scale(0);
    } 
    40% { 
        transform: scale(1);
    }
}

/* ========================================
   导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    transition: var(--transition);
    background: #043bef;
    box-shadow: 0 2px 10px rgba(4, 59, 239, 0.2);
}

.header.sticky {
    background: #043bef;
    box-shadow: 0 2px 20px rgba(4, 59, 239, 0.3);
}

.nav-inner {
    padding: 20px 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 28px;
    font-weight: 700;
    color: var(--white);
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    transform: translateY(-2px);
    color: var(--white);
}

.header.sticky .navbar-brand {
    color: var(--white);
}

.navbar-brand img {
    height: 58px;
    width: auto;
}

.brand-text {
    color: var(--white);
    font-size: 28px;
    letter-spacing: 0.5px;
}

/* Logo优化样式 */
.navbar-logo {
    height: 58px !important;
    width: auto;
    transition: all 0.3s ease;
    filter: brightness(1);
}

.navbar-logo:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.navbar-nav {
    gap: 30px;
}

.navbar-nav .nav-item .nav-link,
.navbar-nav .nav-item a {
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.header.sticky .navbar-nav .nav-item .nav-link,
.header.sticky .navbar-nav .nav-item a {
    color: rgba(255, 255, 255, 0.95);
}

.navbar-nav .nav-item a:hover {
    color: var(--white);
}

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

.navbar-nav .nav-item a:hover::after,
.navbar-nav .nav-item a.active::after {
    width: 100%;
}

.button-group {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-left: 30px;
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.header.sticky .btn-outline {
    color: var(--white);
    border-color: var(--white);
}

.btn-outline:hover {
    background: var(--white);
    color: #043bef;
    border-color: var(--white);
}

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

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

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

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

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

.btn-light:hover {
    background: var(--light);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 15px 40px;
    font-size: 18px;
}

/* ========================================
   Hero区域
   ======================================== */
.hero-section {
    position: relative;
    background: var(--white);
    padding: 120px 0 60px;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 40px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.1) 0%, rgba(5, 64, 255, 0.1) 100%);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 25px;
    border: 1px solid rgba(4, 50, 204, 0.2);
}

.hero-badge i {
    font-size: 16px;
}

.hero-content h1 {
    font-size: 56px;
    color: var(--dark);
    margin-bottom: 15px;
    line-height: 1.2;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 28px;
    color: var(--gray-dark);
    margin-bottom: 25px;
    font-weight: 600;
    line-height: 1.4;
}

.hero-description {
    font-size: 17px;
    line-height: 1.8;
    color: var(--gray);
    margin-bottom: 30px;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 35px;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.hero-feature-item i {
    font-size: 20px;
    color: var(--secondary-color);
}

.hero-feature-item span {
    font-size: 15px;
    color: var(--gray-dark);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
}

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

.btn-white:hover {
    background: var(--light);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* 视频教程按钮特殊样式 */
.btn-video {
    background: transparent;
    color: var(--gray-dark);
    border: none;
    padding: 15px 20px;
    position: relative;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    height: auto;
}

.btn-video:hover {
    background: transparent;
    color: var(--primary-color);
    border: none;
    transform: translateY(-2px);
}

.btn-video:hover .video-play-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(4, 50, 204, 0.5);
}

/* 视频播放圆形图标 */
.video-play-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    margin-right: 12px;
    position: relative;
    box-shadow: 0 4px 20px rgba(4, 50, 204, 0.4);
    transition: all 0.3s ease;
}

.video-play-icon i {
    color: var(--white);
    font-size: 20px;
    margin-left: 3px;
}

/* 水波纹动画效果 */
.video-play-icon::before,
.video-play-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    opacity: 0;
    animation: ripple 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.video-play-icon::after {
    animation-delay: 1s;
}

@keyframes ripple {
    0% {
        width: 100%;
        height: 100%;
        opacity: 0.8;
    }
    100% {
        width: 180%;
        height: 180%;
        opacity: 0;
    }
}

.hero-image {
    position: relative;
    text-align: center;
}

.hero-image-wrapper {
    position: relative;
    display: inline-block;
}

.hero-image-wrapper img {
    max-width: 100%;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 20px 40px rgba(4, 50, 204, 0.15));
    cursor: pointer;
}

.image-decoration {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.05) 0%, rgba(5, 64, 255, 0.1) 100%);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    z-index: 1;
    animation: morph 8s ease-in-out infinite;
}

@keyframes morph {
    0%, 100% {
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
    25% {
        border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%;
    }
    50% {
        border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%;
    }
    75% {
        border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%;
    }
}

/* 数据统计区域 */
.hero-stats-section {
    margin-top: 80px;
    padding: 40px 0;
    background: linear-gradient(135deg, #0432cc 0%, #0540ff 100%);
    position: relative;
}

.hero-stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

.stat-box {
    text-align: center;
    padding: 20px;
}

.stat-box h3 {
    font-size: 42px;
    color: var(--white);
    margin-bottom: 8px;
    font-weight: 800;
}

.stat-box p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

/* ========================================
   通用区域样式
   ======================================== */
.section-title {
    margin-bottom: 60px;
}

.section-title .tag {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(4, 50, 204, 0.1);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.section-title h2 {
    font-size: 42px;
    margin-bottom: 15px;
    color: var(--dark);
}

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

/* ========================================
   功能卡片
   ======================================== */
.features-section {
    background: var(--white);
    position: relative;
    padding: 100px 0;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(4, 50, 204, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(5, 64, 255, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.features-section .row > [class*="col-"] {
    margin-bottom: 40px;
}

/* ========================================
   新功能展示布局
   ======================================== */
.features-section-new {
    background: var(--white);
    padding: 100px 0 60px;
    overflow: hidden;
}

.feature-item-large {
    padding: 80px 0;
    position: relative;
}

.feature-item-large.left-content {
    background: var(--white);
}

.feature-item-large.right-content {
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.02) 0%, rgba(5, 64, 255, 0.03) 100%);
}

.feature-content {
    position: relative;
    padding: 20px 0;
}

.feature-content .badge-popular {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
    top: 0;
    right: auto;
}

/* 爆款功能标签 - 新样式 */
.badge-hot {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 25px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #FF6B00 0%, #FF8F00 50%, #FFB300 100%);
    border-radius: 50px;
    font-size: 15px;
    font-weight: 800;
    color: var(--white);
    box-shadow: 0 8px 30px rgba(255, 107, 0, 0.4),
                0 0 0 4px rgba(255, 107, 0, 0.1),
                inset 0 -2px 8px rgba(0, 0, 0, 0.15),
                inset 0 2px 4px rgba(255, 255, 255, 0.3);
    letter-spacing: 0.5px;
    animation: badgePulse 2s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.badge-hot::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 70%
    );
    animation: badgeShine 3s ease-in-out infinite;
}

.badge-hot i {
    font-size: 18px;
    color: #FFE57F;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    animation: crownFloat 1.5s ease-in-out infinite;
}

.badge-hot span {
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    position: relative;
    z-index: 1;
}

@keyframes badgePulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 8px 30px rgba(255, 107, 0, 0.4),
                    0 0 0 4px rgba(255, 107, 0, 0.1),
                    inset 0 -2px 8px rgba(0, 0, 0, 0.15),
                    inset 0 2px 4px rgba(255, 255, 255, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 12px 40px rgba(255, 107, 0, 0.5),
                    0 0 0 6px rgba(255, 107, 0, 0.15),
                    inset 0 -2px 8px rgba(0, 0, 0, 0.15),
                    inset 0 2px 4px rgba(255, 255, 255, 0.3);
    }
}

@keyframes badgeShine {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

@keyframes crownFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-3px);
    }
}

.icon-wrapper-large {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
}

.icon-wrapper-large i {
    font-size: 40px;
    color: var(--white);
}

.feature-content h3 {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 20px;
    line-height: 1.3;
}

.feature-description {
    font-size: 17px;
    line-height: 1.8;
    color: var(--gray);
    margin-bottom: 30px;
}

.feature-list-large {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list-large li {
    padding: 12px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gray-dark);
    font-size: 16px;
}

.feature-list-large li i {
    color: var(--secondary-color);
    font-size: 20px;
    flex-shrink: 0;
}

.feature-image {
    position: relative;
    padding: 20px;
}

/* 图片通用样式 - 悬停效果 */
.feature-image img,
.hero-image-wrapper img,
.advantages-image img {
    width: 100%;
    height: auto;
    box-shadow: 0 20px 60px rgba(4, 50, 204, 0.15);
    border: 1px solid var(--gray-light);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
}

/* 功能截图无圆角 */
.feature-image img {
    border-radius: 0;
}

/* 产品主图和优势图保留圆角 */
.hero-image-wrapper img,
.advantages-image img {
    border-radius: 20px;
}

.feature-image img:hover,
.hero-image-wrapper img:hover,
.advantages-image img:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 80px rgba(4, 50, 204, 0.25);
    border-color: var(--primary-color);
}

/* 二维码图片特殊样式 */
.qrcode-image {
    max-width: 280px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(4, 50, 204, 0.15);
    border: 3px solid var(--white);
    display: block;
    margin: 0 auto;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.qrcode-image:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(4, 50, 204, 0.2);
    border-color: var(--primary-color);
}

.image-placeholder,
.product-placeholder,
.advantage-placeholder {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.05) 0%, rgba(5, 64, 255, 0.08) 100%);
    border: 3px dashed rgba(4, 50, 204, 0.3);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.image-placeholder:hover,
.product-placeholder:hover,
.advantage-placeholder:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.08) 0%, rgba(5, 64, 255, 0.1) 100%);
}

.image-placeholder i,
.product-placeholder i,
.advantage-placeholder i {
    font-size: 80px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.image-placeholder p,
.product-placeholder p,
.advantage-placeholder p {
    font-size: 18px;
    color: var(--gray-dark);
    margin-bottom: 10px;
    font-weight: 600;
}

.image-placeholder small,
.product-placeholder small,
.advantage-placeholder small {
    font-size: 14px;
    color: var(--gray);
    font-family: 'Courier New', monospace;
}

.advantage-placeholder {
    height: 400px;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid var(--gray-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: var(--transition);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.03) 0%, rgba(5, 64, 255, 0.03) 100%);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(4, 50, 204, 0.15);
    border-color: rgba(4, 50, 204, 0.2);
}

.feature-card.popular {
    border: 2px solid var(--primary-color);
    box-shadow: 0 8px 30px rgba(4, 50, 204, 0.15);
    position: relative;
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.02) 0%, rgba(5, 64, 255, 0.05) 100%);
}

.feature-card.popular::before {
    opacity: 1;
}

.feature-card.popular:hover {
    border-color: var(--primary-color);
    box-shadow: 0 12px 40px rgba(4, 50, 204, 0.25);
    transform: translateY(-10px);
}

.feature-card.popular .icon-wrapper {
    background: var(--gradient-primary);
}

.feature-card.popular .icon-wrapper i {
    color: var(--white);
}

.feature-card.popular .icon-wrapper::before {
    opacity: 0;
}

.badge-popular {
    position: absolute;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
    z-index: 10;
}

.icon-wrapper {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.1) 0%, rgba(5, 64, 255, 0.15) 100%);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
}

.icon-wrapper::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 18px;
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.feature-card:hover .icon-wrapper::before {
    opacity: 0.1;
}

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

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
    margin-bottom: 25px;
}

.feature-list li {
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-dark);
}

.feature-list li i {
    color: var(--secondary-color);
    font-size: 18px;
}

.feature-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.feature-card.featured .feature-link {
    color: var(--white);
}

.feature-link:hover {
    gap: 12px;
}

/* ========================================
   产品优势区域
   ======================================== */
.advantages-section {
    background: var(--white);
}

.advantages-image img {
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
}

.advantages-content h3 {
    font-size: 36px;
    margin-bottom: 40px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.advantage-icon i {
    font-size: 28px;
    color: var(--white);
}

.advantage-text h4 {
    font-size: 20px;
    margin-bottom: 8px;
}

.advantage-text p {
    color: var(--gray);
    line-height: 1.8;
}

/* ========================================
   工作流程
   ======================================== */
.workflow-section {
    background: var(--light);
}

.workflow-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.workflow-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    position: absolute;
    top: -20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.workflow-icon {
    width: 80px;
    height: 80px;
    background: rgba(4, 50, 204, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.workflow-icon i {
    font-size: 36px;
    color: var(--primary-color);
}

.workflow-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.workflow-card p {
    color: var(--gray);
    line-height: 1.8;
}

/* ========================================
   价格方案
   ======================================== */
.pricing-section {
    background: var(--white);
}

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray-light);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(4, 50, 204, 0.15);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: 0 10px 40px rgba(4, 50, 204, 0.12);
}

.pricing-card.featured:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(4, 50, 204, 0.2);
}

.badge-popular {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    color: var(--white);
    padding: 8px 25px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
}

/* 价格卡片标签组 */
.pricing-badges {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    justify-content: center;
    z-index: 10;
}

.badge-version {
    color: var(--white);
    padding: 10px 28px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

/* 性价比版本 - 橙金色 */
.badge-version.economic {
    background: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
}

.badge-version.economic::before {
    content: '💰';
    margin-right: 6px;
}

/* 完美全能版 - 高级蓝金色 */
.badge-version.premium {
    background: linear-gradient(135deg, #0EA5E9 0%, #3B82F6 50%, #6366F1 100%);
    box-shadow: 0 4px 25px rgba(59, 130, 246, 0.5),
                0 0 30px rgba(99, 102, 241, 0.3);
    animation: premiumGlow 3s ease-in-out infinite;
}

.badge-version.premium::before {
    content: '👑';
    margin-right: 6px;
}

@keyframes premiumGlow {
    0%, 100% {
        box-shadow: 0 4px 25px rgba(59, 130, 246, 0.5),
                    0 0 30px rgba(99, 102, 241, 0.3);
    }
    50% {
        box-shadow: 0 4px 30px rgba(59, 130, 246, 0.7),
                    0 0 40px rgba(99, 102, 241, 0.5);
    }
}

.pricing-header h3 {
    font-size: 28px;
    margin-bottom: 10px;
}

.pricing-header p {
    color: var(--gray);
    margin-bottom: 25px;
}

.pricing-price {
    margin-bottom: 30px;
}

.pricing-price h2 {
    font-size: 48px;
    color: var(--dark);
}

/* 价格咨询显示 */
.price-consult {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    line-height: 1.4;
}

.price-hint {
    font-size: 14px;
    color: var(--gray);
    font-weight: 500;
    margin-bottom: 5px;
}

.pricing-price .currency {
    font-size: 24px;
}

.pricing-price .period {
    font-size: 18px;
    color: var(--gray);
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
    text-align: left;
    flex-grow: 1;
}

.pricing-features li {
    padding: 12px 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features li i {
    font-size: 20px;
    color: var(--secondary-color);
}

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

.pricing-features li.disabled i {
    color: var(--gray);
}

.pricing-card .btn {
    margin-top: auto;
}

/* ========================================
   FAQ
   ======================================== */
.faq-section {
    background: var(--light);
}

.accordion-item {
    background: var(--white);
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    margin-bottom: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
    box-shadow: var(--shadow);
}

.accordion-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.accordion-button {
    background: var(--white);
    color: var(--dark);
    font-size: 18px;
    font-weight: 600;
    padding: 25px 70px 25px 30px;
    border: none;
    display: flex;
    align-items: center;
    gap: 20px;
    width: 100%;
    text-align: left;
    cursor: pointer;
    position: relative;
}

.accordion-button:not(.collapsed) {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: none;
}

.accordion-button .number {
    width: 40px;
    height: 40px;
    background: rgba(4, 50, 204, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--primary-color);
    flex-shrink: 0;
    transition: var(--transition);
}

.accordion-button:not(.collapsed) .number {
    background: var(--primary-color);
    color: var(--white);
}

.accordion-button::after {
    background-image: none !important;
    content: '\ea4e';
    font-family: 'LineIcons';
    font-size: 20px;
    transition: var(--transition);
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    width: auto;
    height: auto;
}

.accordion-button:not(.collapsed)::after {
    transform: translateY(-50%) rotate(180deg);
    background-image: none !important;
}

.accordion-button:focus {
    box-shadow: none;
    outline: none;
}

.accordion-body {
    padding: 20px 30px 30px 90px;
    color: var(--gray);
    line-height: 1.8;
    font-size: 16px;
}

.accordion-body strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* ========================================
   CTA区域
   ======================================== */
.cta-section {
    padding: 80px 0;
    background: var(--dark);
}

.cta-wrapper {
    background: var(--gradient-primary);
    border-radius: 20px;
    padding: 60px;
}

.cta-content h2 {
    font-size: 36px;
    color: var(--white);
    margin-bottom: 10px;
}

.cta-content p {
    font-size: 18px;
    color: var(--white);
    opacity: 0.9;
}

/* ========================================
   联系我们
   ======================================== */
.contact-section {
    background: var(--white);
}

.contact-card-large {
    background: var(--white);
    padding: 60px 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: var(--transition);
}

.contact-icon-large {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
}

.contact-icon-large i {
    font-size: 50px;
    color: var(--white);
}

.contact-card-large h3 {
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--dark);
}

.contact-card-large > p {
    color: var(--gray);
    font-size: 16px;
    margin-bottom: 40px;
    line-height: 1.8;
}

.qrcode-placeholder {
    margin: 30px 0;
}

.qrcode-box {
    width: 280px;
    height: 280px;
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.03) 0%, rgba(5, 64, 255, 0.05) 100%);
    border: 3px dashed rgba(4, 50, 204, 0.3);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    padding: 25px;
    transition: var(--transition);
}

.qrcode-box:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(4, 50, 204, 0.05) 0%, rgba(5, 64, 255, 0.08) 100%);
}

.qrcode-box i {
    font-size: 70px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.qrcode-box p {
    color: var(--gray-dark);
    font-size: 14px;
    margin-bottom: 5px;
    text-align: center;
}

.qrcode-box small {
    color: var(--gray);
    font-size: 12px;
    display: block;
    text-align: center;
}


.contact-tips {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 30px;
}

.contact-tips p {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-dark);
    font-size: 15px;
    margin: 0;
}

.contact-tips i {
    color: var(--secondary-color);
    font-size: 18px;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--dark);
    color: var(--white);
}

.footer-top {
    padding: 80px 0 40px;
}

.footer-widget {
    margin-bottom: 40px;
}

.footer-logo {
    margin-bottom: 20px;
}

.footer-logo .brand-text {
    font-size: 28px;
    font-weight: 700;
}

.footer-desc {
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

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

.footer-widget h3 {
    font-size: 20px;
    color: var(--white);
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--gray-light);
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 30px 0;
}

.copyright,
.beian {
    color: var(--gray-light);
    margin: 0;
}

.beian a {
    color: var(--gray-light);
}

.beian a:hover {
    color: var(--white);
}

/* ========================================
   返回顶部按钮
   ======================================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 99;
}

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

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

/* ========================================
   移动端菜单
   ======================================== */
.navbar-toggler {
    border: none;
    padding: 0;
}

.toggler-icon {
    display: block;
    width: 30px;
    height: 3px;
    background: var(--white);
    margin: 6px 0;
    transition: var(--transition);
}

.header.sticky .toggler-icon {
    background: var(--white);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1199px) {
    .hero-content h1 {
        font-size: 48px;
    }
    
    .section-title h2 {
        font-size: 36px;
    }
}

@media (max-width: 991px) {
    :root {
        --section-padding: 70px 0;
    }
    
    .hero-section {
        padding: 100px 0 40px;
    }
    
    .hero-content {
        padding: 20px 0;
    }
    
    .hero-content h1 {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 22px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
    }
    
    .section-title h2 {
        font-size: 32px;
    }
    
    /* 移动端Logo调整 */
    .navbar-brand {
        font-size: 24px;
        gap: 12px;
    }
    
    .brand-text {
        font-size: 24px;
    }
    
    .navbar-logo {
        height: 50px !important;
    }
    
    .navbar-collapse {
        background: var(--white);
        padding: 20px;
        border-radius: 12px;
        margin-top: 20px;
        box-shadow: var(--shadow-lg);
    }
    
    .navbar-nav {
        flex-direction: column;
        gap: 0;
    }
    
    .navbar-nav .nav-item .nav-link,
    .navbar-nav .nav-item a {
        color: var(--dark);
        padding: 12px 0;
    }
    
    .button-group {
        margin-top: 20px;
        flex-direction: column;
        width: 100%;
    }
    
    .button-group .btn {
        width: 100%;
    }
    
    .hero-image {
        margin-top: 40px;
    }
    
    .advantages-image {
        margin-bottom: 40px;
    }
    
    /* 新功能布局移动端 */
    .feature-item-large {
        padding: 50px 0;
    }
    
    .feature-content h3 {
        font-size: 28px;
    }
    
    .feature-image {
        margin-top: 40px;
    }
    
    .image-placeholder {
        height: 350px;
    }
}

@media (max-width: 767px) {
    .hero-section {
        padding: 80px 0 30px;
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .hero-description {
        font-size: 15px;
    }
    
    .hero-badge {
        font-size: 12px;
        padding: 8px 16px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .feature-card {
        padding: 30px 25px;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .contact-card-large {
        padding: 40px 25px;
    }
    
    .contact-card-large h3 {
        font-size: 24px;
    }
    
    .qrcode-box {
        width: 220px;
        height: 220px;
    }
    
    .contact-tips {
        flex-direction: column;
        gap: 15px;
    }
    
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
    
    /* 新功能布局移动端 */
    .feature-item-large {
        padding: 40px 0;
    }
    
    .feature-content h3 {
        font-size: 24px;
    }
    
    .feature-description {
        font-size: 15px;
    }
    
    .icon-wrapper-large {
        width: 70px;
        height: 70px;
    }
    
    .icon-wrapper-large i {
        font-size: 32px;
    }
    
    .image-placeholder {
        height: 280px;
    }
    
    .image-placeholder i {
        font-size: 60px;
    }
    
    .image-placeholder p {
        font-size: 16px;
    }
}

/* ========================================
   图片灯箱 Lightbox
   ======================================== */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    animation: lightboxZoomIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.lightbox-content img {
    width: 100%;
    height: auto;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 25px 100px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: rotate(90deg);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    z-index: 10001;
}

.lightbox-prev {
    left: 30px;
}

.lightbox-next {
    right: 30px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-counter {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 14px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.15);
    padding: 10px 20px;
    border-radius: 50px;
    backdrop-filter: blur(10px);
}

@keyframes lightboxZoomIn {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* 移动端适配 */
@media (max-width: 767px) {
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .lightbox-prev {
        left: 15px;
    }
    
    .lightbox-next {
        right: 15px;
    }
    
    .lightbox-close {
        top: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .lightbox-counter {
        bottom: 20px;
        font-size: 12px;
        padding: 8px 16px;
    }
    
    .lightbox-content {
        max-width: 95%;
    }
}

/* ========================================
   打印样式
   ======================================== */
@media print {
    .header,
    .scroll-top,
    .cta-section,
    .preloader,
    .lightbox {
        display: none;
    }
}