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

:root {
    /* 主题色 - 来自app配色方案 */
    --primary-color: #6C5FD3;        /* 主要紫色 */
    --primary-dark: #8A70FF;          /* 深紫色 */
    --primary-light: #B5A6FF;        /* 浅紫色 */
    --secondary-color: #FF83A5;       /* 粉色 */
    --theme-color: #8A70FF;            /* 主题色 */
    --theme-light: #B5A6FF;           /* 浅主题色 */
    
    /* 背景色 */
    --bg-primary: #F8F7FF;             /* 浅紫色背景 */
    --bg-secondary: #F0EEFF;          /* 深紫色背景 */
    --bg-default: #F6F7F9;            /* 默认背景色 */
    --bg-light: #F8F7FF;               /* 浅色背景 */
    --bg-white: #FFFFFF;               /* 白色背景 */
    
    /* 文本颜色 */
    --text-primary: #333333;           /* 主要文本色 */
    --text-secondary: #555555;         /* 次要文本色 */
    --text-hint: #999999;              /* 提示文本色 */
    --text-grey: #A1A8A6;              /* 灰色文本 */
    --text-dark: #333333;              /* 深色文本 */
    --text-light: #999999;             /* 浅色文本 */
    
    /* 功能色 */
    --success-color: #48D4C5;         /* 成功色（青色） */
    --warning-color: #FFB740;         /* 警告色 */
    --error-color: #FF6B6B;           /* 错误色 */
    --link-color: #00A9FF;             /* 链接色 */
    
    /* 状态颜色 */
    --active-color: #6C5FD3;          /* 激活状态 */
    --inactive-color: #CACCD5;        /* 未激活状态 */
    
    /* 其他 */
    --border-color: #E5E7EB;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--bg-default);
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(108, 95, 211, 0.08);
    z-index: 1000;
    padding: 1.25rem 0;
    transition: all 0.3s ease;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.nav-brand h1 {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* Hero区域 */
.hero {
    margin-top: 80px;
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 30%, var(--secondary-color) 100%);
    color: white;
    min-height: 700px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 30%, rgba(181, 166, 255, 0.4) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(255, 131, 165, 0.3) 0%, transparent 40%),
                radial-gradient(circle at 50% 50%, rgba(138, 112, 255, 0.2) 0%, transparent 60%);
    animation: heroGlow 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes heroGlow {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 1;
    }
    50% {
        transform: translate(5%, 5%) scale(1.1);
        opacity: 0.8;
    }
}

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

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.hero-description {
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.8;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.btn-primary {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(108, 95, 211, 0.4);
    position: relative;
    z-index: 1;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(108, 95, 211, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease-out 0.2s both;
}

.phone-mockup {
    position: relative;
    width: 320px;
    height: 640px;
    background: linear-gradient(145deg, #ffffff, #f5f5f5);
    border-radius: 32px;
    padding: 8px;
    box-shadow: 0 20px 60px rgba(108, 95, 211, 0.25),
                0 0 0 2px rgba(181, 166, 255, 0.1) inset,
                0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.phone-mockup::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2px;
    z-index: 2;
}

.phone-mockup:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg) scale(1.02);
    box-shadow: 0 25px 70px rgba(108, 95, 211, 0.3),
                0 0 0 2px rgba(181, 166, 255, 0.2) inset,
                0 0 0 1px rgba(255, 255, 255, 0.6) inset;
}

.phone-mockup img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 28px;
    display: block;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

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

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

/* 功能特色 */
.features {
    padding: 6rem 0;
    background: var(--bg-primary);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(181, 166, 255, 0.3), transparent);
}

.section-title {
    text-align: center;
    font-size: 2.75rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 800;
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 1rem auto 0;
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.feature-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 24px;
    box-shadow: 0 4px 20px rgba(108, 95, 211, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(181, 166, 255, 0.1);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(181, 166, 255, 0.1), transparent);
    transition: left 0.5s;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 40px rgba(108, 95, 211, 0.15);
    border-color: rgba(181, 166, 255, 0.3);
}

.feature-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(181, 166, 255, 0.1), rgba(255, 131, 165, 0.1));
    border-radius: 20px;
    transition: all 0.3s ease;
    position: relative;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, rgba(181, 166, 255, 0.2), rgba(255, 131, 165, 0.2));
}

.feature-icon img {
    width: 70%;
    height: 70%;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(108, 95, 211, 0.2));
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 700;
    transition: color 0.3s;
}

.feature-card:hover h3 {
    color: var(--primary-color);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* 截图展示 */
.screenshots {
    padding: 6rem 0;
    background: white;
    position: relative;
}

.screenshots::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(181, 166, 255, 0.3), transparent);
}

.screenshots-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.screenshot-item {
    display: flex;
    justify-content: center;
}

.screenshot-frame {
    background: linear-gradient(145deg, #ffffff, #f5f5f5);
    border-radius: 28px;
    padding: 8px;
    box-shadow: 0 20px 60px rgba(108, 95, 211, 0.2),
                0 0 0 2px rgba(181, 166, 255, 0.1) inset,
                0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    max-width: 320px;
    width: 100%;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.screenshot-frame::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2px;
    z-index: 2;
}

.screenshot-item:hover .screenshot-frame {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 30px 80px rgba(108, 95, 211, 0.3),
                0 0 0 2px rgba(181, 166, 255, 0.2) inset,
                0 0 0 1px rgba(255, 255, 255, 0.6) inset;
}

.screenshot-frame img {
    width: 100%;
    height: auto;
    border-radius: 24px;
    display: block;
    position: relative;
    z-index: 0;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.screenshot-label {
    text-align: center;
    margin-top: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 下载区域 */
.download {
    padding: 7rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 30%, var(--secondary-color) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 30%, rgba(181, 166, 255, 0.3) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(255, 131, 165, 0.25) 0%, transparent 40%),
                radial-gradient(circle at 50% 50%, rgba(138, 112, 255, 0.15) 0%, transparent 60%);
    animation: downloadGlow 10s ease-in-out infinite;
    pointer-events: none;
}

@keyframes downloadGlow {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 1;
    }
    50% {
        transform: translate(-3%, -3%) scale(1.05);
        opacity: 0.9;
    }
}

.download .container {
    position: relative;
    z-index: 1;
}

.download .section-title {
    color: white;
    margin-bottom: 1.5rem;
}

.download .section-title::after {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.3));
}

.download-subtitle {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 4rem;
    opacity: 0.95;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem 2.5rem;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 20px;
    text-decoration: none;
    color: white;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 220px;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

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

.download-btn:hover::before {
    width: 400px;
    height: 400px;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary-color);
    transform: translateY(-4px) scale(1.02);
    border-color: white;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.download-btn svg {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    transition: transform 0.3s;
}

.download-btn:hover svg {
    transform: scale(1.1);
}

.download-label {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
}

.download-sub {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
}

.qr-code-section {
    text-align: center;
}

.qr-title {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    font-weight: 600;
}

.qr-codes {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

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

.qr-code-image {
    width: 220px;
    height: 220px;
    object-fit: contain;
    background: white;
    padding: 15px;
    border-radius: 20px;
    margin: 0 auto 1.5rem;
    display: block;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.qr-item:hover .qr-code-image {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.qr-item p {
    font-weight: 600;
}

/* 关于我们 */
.about {
    padding: 7rem 0;
    background: var(--bg-primary);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(181, 166, 255, 0.3), transparent);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 4rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: 5rem;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(108, 95, 211, 0.08);
    transition: all 0.3s ease;
    min-width: 180px;
    border: 1px solid rgba(181, 166, 255, 0.1);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(108, 95, 211, 0.15);
    border-color: rgba(181, 166, 255, 0.3);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
}

/* 页脚 */
.footer {
    background: linear-gradient(180deg, #1F2937 0%, #0F1419 100%);
    color: white;
    padding: 4rem 0 1.5rem;
    position: relative;
    margin-top: 2rem;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(181, 166, 255, 0.3), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.footer-section h3 {
    font-size: 1.5rem;
    margin: 0;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-section a:hover {
    color: var(--primary-light);
    transform: translateX(3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    margin-top: 2rem;
}

.footer-bottom p {
    margin: 0.5rem 0;
    font-size: 0.95rem;
}

.icp-info {
    margin-top: 0.5rem;
}

.icp-info a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.icp-info a:hover {
    color: var(--primary-light);
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .screenshots-gallery {
        grid-template-columns: 1fr;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .about-stats {
        gap: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

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

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 滚动动画 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card {
    animation: slideInUp 0.6s ease-out both;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

.screenshot-item {
    animation: slideInUp 0.6s ease-out both;
}

.screenshot-item:nth-child(1) { animation-delay: 0.1s; }
.screenshot-item:nth-child(2) { animation-delay: 0.2s; }
.screenshot-item:nth-child(3) { animation-delay: 0.3s; }

.stat-item {
    animation: slideInUp 0.6s ease-out both;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }