/* 零屿笔记官网样式 */

/* 基础样式 */
:root {
    /* 主色调 */
    --primary: #007AFF;
    --secondary: #FF9500;
    --success: #4CD964;
    --danger: #FF3B30;
    --info: #32ADE6;
    --warning: #FFCC00;

    /* 中性色 - 亮模式 */
    --background: #FFFFFF;
    --text-primary: #000000;
    --text-secondary: #8E8E93;
    --border: #E5E5EA;
    --divider: #C7C7CC;

    /* 特殊用途 */
    --card-background: #F2F2F7;
    --input-background: #F2F2F7;
    --placeholder: #C7C7CC;

    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #007AFF 0%, #32ADE6 100%);
    --gradient-secondary: linear-gradient(135deg, #FF9500 0%, #FFCC00 100%);
    --gradient-success: linear-gradient(135deg, #4CD964 0%, #34C759 100%);
    --gradient-danger: linear-gradient(135deg, #FF3B30 0%, #FF2D55 100%);
    --gradient-background: linear-gradient(-45deg, #F5F7FA, #E9F0F7, #D4E3F9, #C3CFE2);
    --gradient-card-1: linear-gradient(135deg, rgba(0, 122, 255, 0.1) 0%, rgba(50, 173, 230, 0.05) 100%);
    --gradient-card-2: linear-gradient(135deg, rgba(76, 217, 100, 0.1) 0%, rgba(52, 199, 89, 0.05) 100%);
    --gradient-card-3: linear-gradient(135deg, rgba(255, 149, 0, 0.1) 0%, rgba(255, 204, 0, 0.05) 100%);

    /* 间距 */
    --spacing-tiny: 4px;
    --spacing-small: 8px;
    --spacing-medium: 16px;
    --spacing-large: 24px;
    --spacing-xlarge: 32px;
    --spacing-xxlarge: 48px;

    /* 圆角 */
    --border-radius-small: 4px;
    --border-radius-medium: 8px;
    --border-radius-large: 16px;
    --border-radius-xlarge: 24px;
    --border-radius-round: 999px;

    /* 阴影 */
    --shadow-small: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-large: 0 10px 15px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: color 0.3s ease;
}

a:hover {
    color: #0056b3;
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-medium);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius-medium);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.5s;
}

.btn-primary:hover {
    background-color: #0056b3;
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover::before {
    left: 100%;
    transition: all 0.5s;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-outline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background-color: var(--primary);
    transition: all 0.3s;
    z-index: -1;
}

.btn-outline:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-outline:hover::before {
    width: 100%;
}

/* 标题样式 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-medium);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    margin-bottom: var(--spacing-xlarge);
    color: var(--text-secondary);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-small);
    padding: var(--spacing-medium) 0;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    width: auto;
    margin-right: var(--spacing-small);
    filter: drop-shadow(0 2px 4px rgba(0, 122, 255, 0.2));
    transition: filter 0.3s ease, transform 0.3s ease;
}

.logo-text-img {
    height: 30px;
    width: auto;
    transition: filter 0.3s ease, transform 0.3s ease;
}

.logo:hover .logo-img,
.logo:hover .logo-text-img {
    filter: drop-shadow(0 4px 8px rgba(0, 122, 255, 0.4));
    transform: scale(1.05);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav ul {
    display: flex;
}

.nav ul li {
    margin-left: var(--spacing-large);
}

.nav ul li a {
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
    padding: var(--spacing-small) 0;
}

.nav ul li a:hover,
.nav ul li a.active {
    color: var(--primary);
}

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

.nav ul li a:hover::after,
.nav ul li a.active::after {
    width: 100%;
}

/* 英雄区域 */
.hero {
    padding: 120px 0 100px;
    position: relative;
    overflow: hidden;
    background: var(--gradient-background);
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(0, 122, 255, 0.05) 0%, rgba(0, 122, 255, 0) 50%),
                radial-gradient(circle at 70% 50%, rgba(255, 149, 0, 0.05) 0%, rgba(255, 149, 0, 0) 50%);
    animation: pulse 15s infinite linear;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.03;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.05;
    }
    100% {
        transform: scale(1);
        opacity: 0.03;
    }
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-direction: row;
    gap: var(--spacing-xlarge);
}

.hero-content {
    flex: 1;
    max-width: 500px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-medium);
    color: var(--text-primary);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-large);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-medium);
}

.hero-image {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    max-width: 600px;
}

/* 滑动容器样式 */
.slider-container {
    width: 100%;
    max-width: 600px;
    position: relative;
    z-index: 2;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-large);
    overflow: hidden;
}

.slider {
    display: flex;
    transition: transform 0.5s ease-in-out;
    width: 100%;
}

.slide {
    min-width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slide img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-large);
}

/* 滑动控制按钮 */
.slider-controls {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-medium);
}

.prev-btn, .next-btn {
    background-color: rgba(255, 255, 255, 0.7);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    color: var(--primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-small);
}

.prev-btn:hover, .next-btn:hover {
    background-color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.slider-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background-color: var(--primary);
    transform: scale(1.2);
}

.hero-image-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1) 0%, rgba(0, 122, 255, 0) 50%),
                linear-gradient(45deg, rgba(76, 217, 100, 0.05) 0%, rgba(76, 217, 100, 0) 50%);
    z-index: 1;
    animation: moveGradient 15s ease-in-out infinite alternate;
}

@keyframes moveGradient {
    0% {
        background-position: 0% 0%;
    }
    100% {
        background-position: 100% 100%;
    }
}

/* 功能区域 */
.features {
    padding: 100px 0;
    background-color: var(--background);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, auto);
    gap: var(--spacing-large);
    margin-top: var(--spacing-xlarge);
}

.feature-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-large);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    position: relative;
    z-index: 1;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 122, 255, 0.1) 0%, rgba(0, 122, 255, 0) 70%);
    opacity: 0;
    z-index: -1;
    transform: scale(0.5);
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.feature-card:nth-child(3n+1) {
    background: var(--gradient-card-1);
}

.feature-card:nth-child(3n+2) {
    background: var(--gradient-card-2);
}

.feature-card:nth-child(3n+3) {
    background: var(--gradient-card-3);
}

.feature-card:nth-child(3n+1)::before {
    background: radial-gradient(circle, rgba(0, 122, 255, 0.2) 0%, rgba(0, 122, 255, 0) 70%);
}

.feature-card:nth-child(3n+2)::before {
    background: radial-gradient(circle, rgba(76, 217, 100, 0.2) 0%, rgba(76, 217, 100, 0) 70%);
}

.feature-card:nth-child(3n+3)::before {
    background: radial-gradient(circle, rgba(255, 149, 0, 0.2) 0%, rgba(255, 149, 0, 0) 70%);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
    background-color: white;
}

.feature-card:hover::before {
    opacity: 1;
    transform: scale(1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.2) 0%, rgba(0, 122, 255, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--spacing-medium);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.feature-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0) 60%);
}

.feature-icon::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0) 100%);
    transition: all 0.5s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

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

.feature-card:nth-child(3n+1) .feature-icon {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.2) 0%, rgba(0, 122, 255, 0.1) 100%);
}

.feature-card:nth-child(3n+2) .feature-icon {
    background: linear-gradient(135deg, rgba(76, 217, 100, 0.2) 0%, rgba(76, 217, 100, 0.1) 100%);
}

.feature-card:nth-child(3n+3) .feature-icon {
    background: linear-gradient(135deg, rgba(255, 149, 0, 0.2) 0%, rgba(255, 149, 0, 0.1) 100%);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--primary);
    position: relative;
    z-index: 1;
}

.feature-card:nth-child(3n+1) .feature-icon i {
    color: var(--primary);
}

.feature-card:nth-child(3n+2) .feature-icon i {
    color: var(--success);
}

.feature-card:nth-child(3n+3) .feature-icon i {
    color: var(--secondary);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-small);
    color: var(--text-primary);
}

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

/* 应用展示 */
.app-showcase {
    padding: 100px 0;
    background-color: var(--card-background);
    position: relative;
    overflow: hidden;
    transition: background-color 1s ease;
}

.app-showcase:nth-child(odd) {
    background: linear-gradient(135deg, var(--background) 0%, #F5F7FA 100%);
    animation: gradientBgLight 15s ease infinite;
}

.app-showcase:nth-child(even) {
    background: linear-gradient(135deg, var(--card-background) 0%, #E9F0F7 100%);
    animation: gradientBgDark 15s ease infinite;
}

@keyframes gradientBgLight {
    0% {
        background-color: var(--background);
    }
    50% {
        background-color: #f8f9fa;
    }
    100% {
        background-color: var(--background);
    }
}

@keyframes gradientBgDark {
    0% {
        background-color: var(--card-background);
    }
    50% {
        background-color: #eaedf0;
    }
    100% {
        background-color: var(--card-background);
    }
}

.app-showcase::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, rgba(0, 122, 255, 0) 70%);
    z-index: 0;
    animation: glowPulse 10s ease-in-out infinite;
}

@keyframes glowPulse {
    0% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.1);
    }
    100% {
        opacity: 0.5;
        transform: scale(1);
    }
}

.app-showcase:nth-child(odd)::before {
    top: -150px;
    right: -150px;
}

.app-showcase:nth-child(even)::before {
    bottom: -150px;
    left: -150px;
}

.app-showcase .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xlarge);
}

.app-showcase.reverse .container {
    flex-direction: row-reverse;
}

.showcase-content {
    flex: 1;
}

.showcase-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-medium);
    color: var(--text-primary);
}

.showcase-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-large);
}

.showcase-features {
    margin-top: var(--spacing-large);
}

.showcase-features li {
    margin-bottom: var(--spacing-medium);
    display: flex;
    align-items: center;
}

.showcase-features li i {
    color: var(--success);
    margin-right: var(--spacing-small);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.showcase-features li:hover i {
    transform: scale(1.2);
}

.showcase-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.showcase-image img {
    max-width: 100%;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-large);
    transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.showcase-image:hover img {
    transform: scale(1.02) translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background-color: var(--background);
    position: relative;
    overflow: hidden;
    animation: gradientBgDownload 15s ease infinite;
}

@keyframes gradientBgDownload {
    0% {
        background-color: var(--background);
    }
    50% {
        background-color: #f0f7ff;
    }
    100% {
        background-color: var(--background);
    }
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><circle cx="10" cy="10" r="2" fill="%23007AFF" opacity="0.05"/></svg>');
    z-index: 0;
    animation: patternMove 30s linear infinite;
}

@keyframes patternMove {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 100px 100px;
    }
}

.download-options {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xlarge);
    margin-top: var(--spacing-xlarge);
}

.download-option {
    text-align: center;
    background-color: var(--card-background);
    border-radius: var(--border-radius-large);
    padding: var(--spacing-large);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-option:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: var(--shadow-medium);
}

.download-option .btn {
    position: relative;
    overflow: hidden;
}

.download-option .btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0) 70%);
    opacity: 0;
    transform: scale(0.5);
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.download-option .btn:hover::after {
    opacity: 1;
    transform: scale(1);
}

.qr-code {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-medium);
    background-color: white;
    padding: var(--spacing-small);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-small);
}

.qr-code img {
    width: 100%;
    height: 100%;
}

.download-option h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-medium);
    color: var(--text-primary);
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background-color: var(--card-background);
}

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

.about-content p {
    margin-bottom: var(--spacing-large);
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-large);
    margin-top: var(--spacing-large);
}

.contact-info a {
    display: flex;
    align-items: center;
    color: var(--primary);
}

.contact-info a i {
    margin-right: var(--spacing-small);
}

/* 页脚 */
.footer {
    background-color: #1a1a1a;
    color: white;
    padding: var(--spacing-large) 0 var(--spacing-xlarge); /* 减少上下内边距 */
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--success), var(--danger), var(--info));
    animation: gradientMove 5s linear infinite;
}

@keyframes gradientMove {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.footer::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 100%, rgba(0, 122, 255, 0.1) 0%, rgba(0, 0, 0, 0) 60%);
    z-index: 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-large); /* 减少底部间距 */
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-medium); /* 减少底部间距 */
    padding: var(--spacing-small) 0; /* 减少上下内边距 */
    position: relative;
    z-index: 2; /* 确保在背景效果之上 */
}

.footer-logo img {
    height: 100px; /* 增大大小 */
    width: auto;
    margin-right: var(--spacing-large);
    filter: none; /* 完全移除所有滤镜效果 */
    transition: transform 0.3s ease;
}

.footer-logo .logo-text-img {
    height: 80px; /* 增大大小 */
    /* 移除所有滤镜效果，显示原始 logo.png */
}

.footer-logo-text {
    /* 移除所有滤镜效果 */
}

.footer-logo:hover img {
    filter: none; /* 悬停时也不使用滤镜 */
    transform: scale(1.05);
}

.footer-logo:hover .footer-logo-text {
    /* 移除所有滤镜效果，显示原始 logo.png */
    transform: scale(1.05);
}

.footer-logo:active img,
.footer-logo:active .footer-logo-text {
    transform: scale(1); /* 点击时恢复原始大小 */
}

.footer-logo h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.footer-links {
    display: flex;
    gap: var(--spacing-xlarge);
}

.footer-links-column h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-small); /* 减少底部间距 */
    color: white;
}

.footer-links-column ul li {
    margin-bottom: var(--spacing-small);
}

.footer-links-column ul li a {
    color: #a0a0a0;
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: var(--spacing-medium);
}

.social-links a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: background-color 0.3s ease;
}

.social-links a:hover {
    background-color: var(--primary);
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-medium);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #a0a0a0;
}

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-large);
}

.footer-bottom-links a {
    color: #a0a0a0;
    transition: color 0.3s ease;
}

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

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

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

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

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

@keyframes shimmer {
    0% { background-position: -100% 0; }
    100% { background-position: 100% 0; }
}

.hero-content {
    animation: slideInLeft 1s ease-out;
}

.hero-image {
    animation: slideInRight 1s ease-out;
}

.slider-container {
    animation: pulse 5s ease-in-out infinite;
}

.prev-btn, .next-btn {
    animation: float 3s ease-in-out infinite;
}

.dot.active {
    animation: pulse 2s ease-in-out infinite;
}

.section-title, .section-subtitle {
    animation: fadeIn 1s ease-out;
}

.feature-card {
    animation: fadeIn 0.8s ease-out;
    animation-fill-mode: 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; }
.feature-card:nth-child(7) { animation-delay: 0.7s; }
.feature-card:nth-child(8) { animation-delay: 0.8s; }
.feature-card:nth-child(9) { animation-delay: 0.9s; }

.app-showcase:nth-child(odd) .showcase-content {
    animation: slideInLeft 1s ease-out;
    animation-fill-mode: both;
}

.app-showcase:nth-child(odd) .showcase-image {
    animation: slideInRight 1s ease-out;
    animation-fill-mode: both;
}

.app-showcase:nth-child(even) .showcase-content {
    animation: slideInRight 1s ease-out;
    animation-fill-mode: both;
}

.app-showcase:nth-child(even) .showcase-image {
    animation: slideInLeft 1s ease-out;
    animation-fill-mode: both;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .app-showcase .container {
        flex-direction: column;
    }

    .app-showcase.reverse .container {
        flex-direction: column;
    }

    .showcase-content, .showcase-image {
        width: 100%;
    }

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

    .footer-content {
        flex-direction: column;
    }

    .footer-links {
        flex-direction: column;
        margin-top: var(--spacing-large);
    }
}

@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
    }

    .hero-content {
        text-align: center;
        margin-bottom: var(--spacing-xlarge);
    }

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

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

    .contact-info {
        flex-direction: column;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-bottom-links {
        margin-top: var(--spacing-medium);
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .header .container {
        flex-direction: column;
    }

    .logo {
        margin-bottom: var(--spacing-medium);
    }

    .nav ul {
        justify-content: center;
    }

    .nav ul li {
        margin: 0 var(--spacing-small);
    }

    .hero {
        padding: 120px 0 60px;
    }

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

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