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

:root {
    /* 柔和马卡龙配色方案 - 无粉色系 */
    --macaron-mint: #98D8C8;
    --macaron-mint-light: #B8E6D9;
    --macaron-lavender: #C9A0DC;
    --macaron-lavender-light: #E0D4E8;
    --macaron-peach: #FFDAB9;
    --macaron-peach-light: #FFE4D1;
    --macaron-sky: #87CEEB;
    --macaron-sky-light: #B0E0E6;
    --macaron-lemon: #F0E68C;
    --macaron-lemon-light: #F5F5DC;
    --macaron-coral: #FFA07A;
    --macaron-coral-light: #FFD4C4;
    
    /* 中性色 */
    --white: #FFFFFF;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;
    --gray-300: #E0E0E0;
    --gray-400: #BDBDBD;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);
    --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.15);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 50%, var(--macaron-mint-light) 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--gray-200);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
}

.logo h1 {
    font-size: 26px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--macaron-coral), var(--macaron-lavender), var(--macaron-sky));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    font-size: 14px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-links a:hover {
    color: var(--macaron-lavender);
    background: var(--macaron-lavender-light);
}

.lang-toggle {
    background: linear-gradient(135deg, var(--macaron-coral), var(--macaron-lavender));
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    margin-left: 8px;
}

.lang-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--macaron-mint-light) 0%, var(--macaron-sky-light) 50%, var(--macaron-lavender-light) 100%);
    color: var(--gray-800);
    padding: 160px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    right: -50%;
    bottom: -50%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 182, 193, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(152, 216, 200, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(221, 160, 221, 0.3) 0%, transparent 40%);
    animation: float 15s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

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

.hero h1 {
    font-size: 52px;
    margin-bottom: 24px;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -1px;
    line-height: 1.2;
}

.hero p {
    font-size: 20px;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    color: var(--gray-600);
    line-height: 1.7;
}

.btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--macaron-coral), var(--macaron-lavender));
    color: white;
    padding: 18px 40px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* 特性区域 */
.features {
    padding: 120px 0;
    background: var(--white);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to bottom, var(--macaron-sky-light), transparent);
    opacity: 0.5;
}

.features h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 80px;
    color: var(--gray-900);
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.features h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--macaron-coral), var(--macaron-lavender));
    border-radius: var(--radius-full);
    margin: 16px auto 0;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
    position: relative;
    z-index: 1;
}

.feature-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.feature-card:nth-child(1) {
    border-top: 4px solid var(--macaron-coral);
}

.feature-card:nth-child(2) {
    border-top: 4px solid var(--macaron-mint);
}

.feature-card:nth-child(3) {
    border-top: 4px solid var(--macaron-sky);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    font-size: 56px;
    margin-bottom: 24px;
    display: inline-block;
    transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--gray-900);
    font-weight: 700;
}

.feature-card ul {
    list-style-type: none;
}

.feature-card li {
    margin-bottom: 12px;
    padding-left: 28px;
    position: relative;
    color: var(--gray-600);
    font-size: 15px;
    line-height: 1.6;
}

.feature-card li:before {
    content: "✓";
    color: var(--macaron-mint);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 16px;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
    font-size: 15px;
}

/* 下载区域 */
.download {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--macaron-peach-light) 0%, var(--macaron-coral-light) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.6) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.9; }
}

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

.download h2 {
    font-size: 42px;
    margin-bottom: 20px;
    color: var(--gray-900);
    font-weight: 700;
}

.download h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--macaron-coral), var(--macaron-peach));
    border-radius: var(--radius-full);
    margin: 16px auto 0;
}

.download p {
    font-size: 18px;
    margin-bottom: 40px;
    color: var(--gray-600);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* 截图展示 */
.screenshots {
    padding: 120px 0;
    background: var(--gray-50);
    position: relative;
}

.screenshots h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 60px;
    color: var(--gray-900);
    font-weight: 700;
}

.screenshots h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--macaron-mint), var(--macaron-sky));
    border-radius: var(--radius-full);
    margin: 16px auto 0;
}

.screenshots h3 {
    font-size: 24px;
    margin: 60px 0 30px;
    color: var(--gray-800);
    font-weight: 600;
    text-align: center;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.screenshot-item {
    text-align: center;
    transition: all var(--transition-normal);
}

.screenshot-item:hover {
    transform: translateY(-8px);
}

.screenshot-item img {
    width: 100%;
    max-width: 280px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    margin-bottom: 20px;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
}

.screenshot-item:hover img {
    box-shadow: var(--shadow-hover);
    transform: scale(1.03);
}

.screenshot-item p {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 15px;
}

/* 免责声明 */
.disclaimer {
    padding: 100px 0;
    background: var(--white);
    position: relative;
    border-top: 1px solid var(--gray-200);
}

.disclaimer h2 {
    font-size: 36px;
    margin-bottom: 24px;
    color: var(--gray-900);
    font-weight: 700;
    text-align: center;
}

.disclaimer h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--macaron-lavender), var(--macaron-coral));
    border-radius: var(--radius-full);
    margin: 16px auto 0;
}

.disclaimer p {
    margin-bottom: 24px;
    color: var(--gray-600);
    line-height: 1.8;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.disclaimer-links {
    margin-top: 40px;
    text-align: center;
}

.disclaimer-links a {
    color: var(--macaron-lavender);
    text-decoration: none;
    margin: 0 16px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    background: var(--macaron-lavender-light);
    transition: all var(--transition-fast);
    display: inline-block;
}

.disclaimer-links a:hover {
    background: var(--macaron-lavender);
    color: white;
    transform: translateY(-2px);
}

/* 许可协议 */
.license {
    padding: 100px 0;
    background: var(--gray-50);
    position: relative;
}

.license h2 {
    font-size: 36px;
    margin-bottom: 24px;
    color: var(--gray-900);
    font-weight: 700;
    text-align: center;
}

.license h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--macaron-sky), var(--macaron-mint));
    border-radius: var(--radius-full);
    margin: 16px auto 0;
}

.license h3 {
    font-size: 22px;
    margin: 40px 0 20px;
    color: var(--gray-800);
    font-weight: 600;
}

.license p {
    margin-bottom: 20px;
    color: var(--gray-600);
    line-height: 1.8;
}

.license ul {
    margin-left: 24px;
    margin-bottom: 24px;
}

.license li {
    margin-bottom: 12px;
    color: var(--gray-600);
    line-height: 1.7;
    position: relative;
    padding-left: 8px;
}

.license li::marker {
    color: var(--macaron-mint);
}

/* 贡献 */
.contributing {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--macaron-mint-light) 0%, var(--macaron-sky-light) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contributing::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.5) 0%, transparent 70%);
    border-radius: 50%;
}

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

.contributing h2 {
    font-size: 36px;
    margin-bottom: 24px;
    color: var(--gray-900);
    font-weight: 700;
}

.contributing h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--macaron-mint), var(--macaron-sky));
    border-radius: var(--radius-full);
    margin: 16px auto 0;
}

.contributing p {
    font-size: 18px;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: var(--white);
    position: relative;
}

.contact h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: var(--gray-900);
    font-weight: 700;
}

.contact h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--macaron-coral), var(--macaron-lavender));
    border-radius: var(--radius-full);
    margin: 16px auto 0;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 80px;
    flex-wrap: wrap;
}

.contact-item {
    text-align: center;
    padding: 40px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    min-width: 280px;
}

.contact-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.contact-item h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--gray-800);
    font-weight: 600;
}

.contact-item p {
    font-size: 16px;
    color: var(--macaron-lavender);
    font-weight: 600;
}

.contact-item img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
}

.contact-item:hover img {
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

/* 页脚 */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    text-align: center;
    padding: 40px 0;
    position: relative;
}

.footer p {
    font-size: 14px;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .nav-links {
        flex-wrap: wrap;
        gap: 8px;
        width: 100%;
    }

    .nav-links a {
        font-size: 13px;
        padding: 6px 12px;
    }

    .hero {
        padding: 140px 0 80px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 16px;
    }

    .features h2,
    .download h2,
    .screenshots h2,
    .disclaimer h2,
    .license h2,
    .contributing h2,
    .contact h2 {
        font-size: 28px;
    }

    .feature-cards,
    .screenshot-grid {
        grid-template-columns: 1fr;
    }

    .contact-info {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }

    .contact-item {
        min-width: unset;
        width: 100%;
        max-width: 320px;
    }

    .feature-card,
    .screenshot-item {
        margin: 0;
    }
}

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

.animate-on-scroll {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

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

/* 选中文字样式 */
::selection {
    background: var(--macaron-lavender-light);
    color: var(--gray-800);
}