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

:root {
    /* 主色调 - 清新蓝色系 */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-200: #bae6fd;
    --primary-300: #7dd3fc;
    --primary-400: #38bdf8;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --primary-800: #075985;
    --primary-900: #0c4a6e;
    
    /* 辅助色 - 清新绿色系 */
    --secondary-50: #f0fdf4;
    --secondary-100: #dcfce7;
    --secondary-200: #bbf7d0;
    --secondary-300: #86efac;
    --secondary-400: #4ade80;
    --secondary-500: #22c55e;
    --secondary-600: #16a34a;
    --secondary-700: #15803d;
    --secondary-800: #166534;
    --secondary-900: #14532d;
    
    /* 强调色 - 活力橙色 */
    --accent-50: #fff7ed;
    --accent-100: #ffedd5;
    --accent-200: #fed7aa;
    --accent-300: #fdba74;
    --accent-400: #fb923c;
    --accent-500: #f97316;
    --accent-600: #ea580c;
    --accent-700: #c2410c;
    --accent-800: #9a3412;
    --accent-900: #7c2d12;
    
    /* 中性色 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* 功能色 */
    --success-500: #10b981;
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    
    /* 阴影系统 */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 圆角系统 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    
    /* 间距系统 */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #f1f5f9 100%);
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-logo i {
    margin-right: 12px;
    font-size: 28px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 8px 16px;
    border-radius: var(--radius-lg);
}

.nav-link:hover {
    color: var(--primary-600);
    background: var(--primary-50);
    transform: translateY(-1px);
}

.nav-link.active {
    color: var(--primary-600);
    background: var(--primary-100);
    font-weight: 600;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
    border-radius: 1px;
}

.nav-link:hover::after {
    width: 80%;
}

.language-switcher {
    display: flex;
    gap: 0;
    margin-left: 20px;
    padding: 6px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
    border-radius: 30px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.lang-btn {
    padding: 12px 20px;
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
    min-width: 50px;
    text-align: center;
    overflow: hidden;
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    box-shadow: 
        0 6px 20px rgba(59, 130, 246, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.lang-btn:hover:not(.active) {
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.lang-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.lang-btn:hover::before {
    width: 100%;
    height: 100%;
    border-radius: 24px;
}

.language-switcher::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1) 0%, 
        rgba(16, 185, 129, 0.1) 50%, 
        rgba(245, 158, 11, 0.1) 100%);
    border-radius: 30px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.language-switcher:hover::before {
    opacity: 1;
}

/* 语言切换器动画效果 */
@keyframes languageSwitch {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.language-switcher.switching {
    animation: languageSwitch 0.3s ease;
}

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

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域样式 */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 25%, var(--secondary-500) 75%, var(--secondary-600) 100%);
    color: white;
    overflow: hidden;
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 60%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 50%, #dcfce7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.gradient-text::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--accent-400), var(--accent-500));
    border-radius: 2px;
    opacity: 0.9;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 12px 24px;
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 32px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    transition: all 0.3s ease;
}

.hero-badge:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.badge-icon {
    font-size: 16px;
}

.badge-text {
    letter-spacing: 0.5px;
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.7;
    margin-bottom: 48px;
    opacity: 0.95;
    max-width: 500px;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 24px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.btn {
    padding: 16px 32px;
    border: none;
    border-radius: var(--radius-2xl);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn::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: left 0.5s;
}

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

.btn-primary {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    color: var(--primary-700);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
    color: var(--primary-800);
    border-color: var(--secondary-200);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}


/* 手机模拟器样式 */
.phone-mockup {
    position: relative;
    width: 320px;
    height: auto;
    background: linear-gradient(145deg, #1a1a1a, #2a2a2a);
    border-radius: 40px;
    padding: 24px;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    margin: 0 auto;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: all 0.3s ease;
    overflow: hidden;
}

.phone-mockup:hover {
    transform: perspective(1000px) rotateY(-2deg) rotateX(2deg) scale(1.02);
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 6px;
    background: #333;
    border-radius: 3px;
    z-index: 2;
}

.app-image {
    width: 100%;
    height: auto;
    max-width: 565px;
    display: block;
    margin: 0 auto;
    border-radius: 20px;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
}

.app-image:hover {
    transform: perspective(1000px) rotateY(-2deg) rotateX(2deg) scale(1.02);
    box-shadow: 
        0 35px 70px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.2);
}

.wallet-interface {
    padding: 20px;
    height: 100%;
}

.wallet-header {
    text-align: center;
    margin-bottom: 30px;
}

.balance-label {
    display: block;
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
}

.balance-amount {
    font-size: 28px;
    font-weight: 700;
    color: #333;
}

.wallet-tokens {
    space-y: 15px;
}

.token-item {
    display: flex;
    align-items: center;
    padding: 15px;
    background: white;
    border-radius: 12px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.token-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #6366f1;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 15px;
}

.token-info {
    flex: 1;
}

.token-name {
    display: block;
    font-weight: 600;
    color: #333;
    margin-bottom: 2px;
}

.token-symbol {
    font-size: 12px;
    color: #666;
}

.token-balance {
    font-weight: 600;
    color: #333;
}

/* 功能特性区域 */
.features {
    padding: 120px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #f0fdf4 100%);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="dots" width="40" height="40" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="2" fill="rgba(34,197,94,0.08)"/></pattern></defs><rect width="100%" height="100%" fill="url(%23dots)"/></svg>');
    opacity: 0.6;
}

.section-header {
    text-align: center;
    margin-bottom: 100px;
    position: relative;
    z-index: 1;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.25rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 32px;
    position: relative;
    z-index: 1;
}

.feature-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    padding: 48px 40px;
    border-radius: var(--radius-3xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--accent-400), var(--accent-500));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.feature-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
    background: rgba(255, 255, 255, 0.98);
    border-color: var(--secondary-200);
}

.feature-icon {
    width: 96px;
    height: 96px;
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-400));
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
    color: white;
    font-size: 2.5rem;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
}

.feature-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.7;
    font-size: 1.1rem;
}

/* 用户功能区域 */
.user-features {
    padding: 100px 0;
    background: white;
}

.user-features-content {
    space-y: 100px;
}

.user-feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}

.user-feature-item.reverse {
    direction: rtl;
}

.user-feature-item.reverse > * {
    direction: ltr;
}

.feature-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
}

.feature-content p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    color: #333;
}

.feature-list i {
    color: #10b981;
    margin-right: 10px;
    font-size: 14px;
}

.feature-visual {
    background: #f8f9fa;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
}

.defi-dashboard {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.defi-header {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
}

.defi-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.defi-stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 12px;
    color: #666;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #333;
}

.ens-interface {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.ens-input {
    display: flex;
    gap: 10px;
}

.ens-input input {
    flex: 1;
    padding: 15px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 16px;
}

.btn-send {
    padding: 15px 25px;
    background: #6366f1;
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
}

/* 开发者区域 */
.developers {
    padding: 100px 0;
    background: #1a1a1a;
    color: white;
}

.developers .section-title,
.developers .section-description {
    color: white;
}

.dev-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.dev-feature {
    background: #2a2a2a;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s ease;
}

.dev-feature:hover {
    transform: translateY(-10px);
}

.dev-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    color: white;
    font-size: 2rem;
}

.dev-feature h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.dev-feature p {
    color: #ccc;
    margin-bottom: 20px;
    line-height: 1.6;
}

.dev-link {
    color: #6366f1;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.dev-link:hover {
    color: #8b5cf6;
}

/* 企业解决方案区域 */
.business {
    padding: 100px 0;
    background: #f8f9fa;
}

.business-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.business-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.business-feature {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.business-feature .feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 1.5rem;
}

.business-feature h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.business-feature p {
    color: #666;
    font-size: 0.9rem;
}

.business-cta {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
}

.business-cta h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.business-cta p {
    margin-bottom: 30px;
    opacity: 0.9;
}

/* 下载区域 */
.download {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 25%, var(--secondary-500) 75%, var(--secondary-600) 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

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

.download-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.download-description {
    font-size: 1.25rem;
    margin-bottom: 60px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    height: 80px;
    min-width: 200px;
}

.download-btn::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: left 0.5s;
}

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

.download-btn:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: var(--shadow-2xl);
}

.download-btn img {
    height: 80px;
    width: auto;
    max-width: 200px;
    border-radius: var(--radius-2xl);
    transition: all 0.3s ease;
    object-fit: contain;
}

.download-btn:hover img {
    transform: scale(1.02);
}

.download-btn-android {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: white;
    text-decoration: none;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.download-btn-android:hover {
    background: linear-gradient(135deg, #2d2d2d 0%, #404040 100%);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.download-btn-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 16px;
}

.download-btn-icon {
    font-size: 2rem;
    color: white;
}

.download-btn-text {
    text-align: left;
}

.download-btn-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.download-btn-subtitle {
    font-size: 0.85rem;
    opacity: 0.9;
    font-weight: 500;
}


/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 100%);
    color: white;
    padding: 80px 0 24px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="footer-grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23footer-grid)"/></svg>');
    opacity: 0.3;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
    position: relative;
    z-index: 1;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
    transition: all 0.3s ease;
}

.footer-logo:hover {
    transform: scale(1.05);
}

.footer-logo i {
    margin-right: 12px;
    font-size: 32px;
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-description {
    color: #ccc;
    margin-bottom: 30px;
    line-height: 1.6;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: #2a2a2a;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #6366f1;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #6366f1;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #ccc;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #6366f1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        width: 100%;
        text-align: center;
        transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: var(--shadow-xl);
        padding: 32px 0;
        border-radius: 0 0 24px 24px;
    }

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

    .language-switcher {
        margin-left: 0;
        margin-top: 20px;
        justify-content: center;
        padding: 4px;
        border-radius: 25px;
    }
    
    .lang-btn {
        padding: 10px 16px;
        font-size: 13px;
        border-radius: 20px;
        min-width: 45px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

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

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
        gap: 16px;
    }


    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .feature-card {
        padding: 32px 24px;
    }

    .user-feature-item {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .user-feature-item.reverse {
        direction: ltr;
    }

    .business-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .download-btn {
        min-width: 280px;
        height: 70px;
    }

    .download-btn-android {
        min-width: 280px;
    }

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


    .app-image {
        max-width: 400px;
        transform: none;
    }

    .app-image:hover {
        transform: scale(1.02);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .app-image {
        max-width: 300px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
}

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

.feature-card,
.dev-feature,
.business-feature {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动行为 */
html {
    scroll-behavior: smooth;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #6366f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #4f46e5;
}