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

:root {
    /* 颜色系统 */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --primary-900: #0c4a6e;
    
    --secondary-50: #f0fdf4;
    --secondary-500: #22c55e;
    --secondary-600: #16a34a;
    
    --accent-50: #fdf4ff;
    --accent-500: #a855f7;
    --accent-600: #9333ea;
    
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-dark: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* 字体 */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* 间距 */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* 动画 */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--neutral-700);
    background: var(--neutral-50);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-600);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
}

.nav-menu {
    display: flex;
    gap: var(--space-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--neutral-600);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-600);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-600);
    transition: width var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--neutral-600);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: white;
    font-weight: 500;
    animation: float 6s ease-in-out infinite;
}

.floating-card i {
    font-size: 1.2rem;
    color: var(--secondary-500);
}

.card-1 {
    top: 15%;
    right: 8%;
    animation-delay: 0s;
}

.card-2 {
    top: 45%;
    right: 3%;
    animation-delay: 2s;
}

.card-3 {
    top: 75%;
    right: 12%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-text {
    position: relative;
    z-index: 2;
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--radius-2xl);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--secondary-500);
    margin-bottom: var(--space-xl);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    line-height: 1.7;
    color: var(--neutral-300);
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    max-width: 500px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary-500);
    font-family: var(--font-mono);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--neutral-400);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
    max-width: 500px;
}

.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(20px);
}

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

/* 英雄区域可视化 */
.hero-visual {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}

.dashboard-preview {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-2xl);
    padding: var(--space-lg);
    width: 100%;
    max-width: 500px;
    height: 400px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.dashboard-title {
    font-weight: 600;
    color: white;
    font-size: 1.1rem;
}

.dashboard-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    color: var(--secondary-500);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--secondary-500);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.dashboard-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.chart-container {
    position: relative;
    height: 120px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
}

.chart-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.grid-line {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.chart-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: end;
}

.line-segment {
    flex: 1;
    height: 2px;
    background: var(--gradient-accent);
    animation: drawLine 2s ease-in-out infinite;
    animation-delay: var(--delay);
}

@keyframes drawLine {
    0% { width: 0; }
    100% { width: 100%; }
}

.chart-points {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.point {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--secondary-500);
    border-radius: 50%;
    left: var(--x);
    bottom: var(--y);
    animation: pointPulse 2s ease-in-out infinite;
}

.point.active {
    background: var(--accent-500);
    box-shadow: 0 0 20px var(--accent-500);
}

@keyframes pointPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.5); }
}

.dashboard-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.metric {
    text-align: center;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--neutral-400);
    margin-bottom: var(--space-xs);
}

.metric-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    font-family: var(--font-mono);
    margin-bottom: var(--space-xs);
}

.metric-change {
    font-size: 0.8rem;
    font-weight: 600;
}

.metric-change.positive {
    color: var(--secondary-500);
}

/* 功能特色区域 */
.features {
    padding: var(--space-3xl) 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--primary-50);
    color: var(--primary-600);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-2xl);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--neutral-900);
    margin-bottom: var(--space-lg);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--neutral-600);
    max-width: 600px;
    margin: 0 auto;
}

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

.feature-card {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

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

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.feature-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-md);
}

.feature-content p {
    color: var(--neutral-600);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.feature-stats {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.stat-item {
    background: var(--neutral-100);
    color: var(--neutral-700);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
}

/* 投资策略区域 */
.strategy {
    padding: var(--space-3xl) 0;
    background: var(--neutral-50);
}

.strategy-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.strategy-text .section-badge {
    background: var(--accent-50);
    color: var(--accent-600);
}

.strategy-list {
    margin-top: var(--space-2xl);
}

.strategy-item {
    display: flex;
    align-items: center; /* 确保整体垂直居中 */
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
}

.strategy-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.strategy-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
    position: relative; /* 为图片定位做准备 */
}

/* 如果使用图片而不是图标 */
.strategy-icon img {
    width: 60%; /* 控制图片大小 */
    height: 60%;
    object-fit: contain;
    display: block;
}

.strategy-content h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-sm);
}

.strategy-content p {
    color: var(--neutral-600);
    line-height: 1.6;
}

.strategy-visual {
    display: flex;
    justify-content: center;
}

.strategy-chart {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--neutral-200);
}

.chart-header h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--neutral-900);
}

.chart-legend {
    display: flex;
    gap: var(--space-md);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
    color: var(--neutral-600);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

.chart-area {
    position: relative;
    height: 200px;
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
}

.performance-line {
    position: absolute;
    height: 3px;
    border-radius: 2px;
    animation: drawPerformance 3s ease-in-out infinite;
}

.performance-line.our-strategy {
    background: var(--secondary-500);
    top: 30%;
    left: 5%;
    right: 5%;
    animation-delay: 0s;
}

.performance-line.benchmark {
    background: var(--primary-500);
    top: 60%;
    left: 5%;
    right: 5%;
    animation-delay: 1s;
}

@keyframes drawPerformance {
    0% { width: 0; }
    100% { width: 90%; }
}

.chart-labels {
    position: absolute;
    bottom: -30px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--neutral-500);
}

/* 关于我们区域 */
.about {
    padding: var(--space-3xl) 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--neutral-900);
    margin-bottom: var(--space-lg);
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--neutral-600);
    margin-bottom: var(--space-xl);
}

.about-features {
    list-style: none;
}

.about-features li {
    padding: var(--space-sm) 0;
    font-size: 1.1rem;
    color: var(--primary-600);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.about-image {
    display: flex;
    justify-content: center;
}

.team-placeholder {
    display: flex;
    gap: var(--space-md);
    align-items: end;
}

.team-member {
    width: 80px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    opacity: 0.8;
    transition: all var(--transition-normal);
}

.team-member:nth-child(2) {
    height: 120px;
    opacity: 1;
    transform: scale(1.1);
}

.team-member:nth-child(3) {
    height: 90px;
}

.team-member:hover {
    transform: translateY(-5px);
    opacity: 1;
}

/* Line加入区域 */
.contact {
    background: var(--neutral-50);
    padding: var(--space-3xl) 0;
}

.contact .section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--neutral-900);
    margin-bottom: var(--space-lg);
}

.contact .section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--neutral-600);
    margin-bottom: var(--space-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.line-join-section {
    max-width: 800px;
    margin: 0 auto;
}

.line-qr-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    background: white;
    padding: var(--space-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--space-2xl);
}

.qr-code {
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    background: var(--neutral-100);
    border: 2px dashed var(--neutral-300);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--neutral-500);
}

.qr-placeholder i {
    font-size: 3rem;
    color: #00c300;
    margin-bottom: var(--space-md);
}

.qr-placeholder p {
    font-size: 1rem;
    font-weight: 500;
}

.qr-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-sm);
}

.qr-info p {
    color: var(--neutral-600);
    margin-bottom: var(--space-lg);
}

.line-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--neutral-700);
}

.feature-item i {
    color: var(--secondary-500);
    font-size: 0.9rem;
}

.line-actions {
    text-align: center;
}

.line-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: #00c300;
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.line-button:hover {
    background: #00a300;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.line-button i {
    font-size: 1.2rem;
}

.line-note {
    margin-top: var(--space-md);
    color: var(--neutral-500);
    font-size: 0.9rem;
}

/* 浮动Line按钮 */
.floating-line-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #00c300;
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-2xl);
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: all var(--transition-normal);
    animation: pulse 2s infinite;
}

.floating-line-button:hover {
    background: #00a300;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 195, 0, 0.4);
}

.floating-line-button i {
    font-size: 1.5rem;
}

.line-text {
    font-weight: 600;
    font-size: 1rem;
}

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

/* 页脚 */
.footer {
    background: var(--neutral-900);
    color: white;
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--space-lg);
    color: var(--secondary-500);
}

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

.footer-section ul li {
    margin-bottom: var(--space-sm);
}

.footer-section ul li a {
    color: var(--neutral-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--neutral-700);
    color: var(--neutral-400);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: var(--space-2xl);
    border-radius: var(--radius-2xl);
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

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

.close {
    position: absolute;
    right: var(--space-lg);
    top: var(--space-lg);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    color: var(--neutral-400);
}

.close:hover {
    color: var(--neutral-700);
}

.modal-form {
    margin-top: var(--space-lg);
}

/* Line模态框样式 */
.line-modal-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.line-modal-qr {
    display: flex;
    justify-content: center;
}

.qr-code-large {
    width: 250px;
    height: 250px;
    background: var(--neutral-100);
    border: 2px dashed var(--neutral-300);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--neutral-500);
}

.qr-placeholder-large i {
    font-size: 4rem;
    color: #00c300;
    margin-bottom: var(--space-md);
}

.qr-placeholder-large p {
    font-size: 1.1rem;
    font-weight: 500;
}

.line-modal-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-md);
}

.line-modal-info p {
    color: var(--neutral-600);
    margin-bottom: var(--space-lg);
}

.line-benefits {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.line-benefits li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    color: var(--neutral-700);
}

.line-benefits li i {
    color: var(--secondary-500);
    font-size: 0.9rem;
}

.line-button-large {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: #00c300;
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.line-button-large:hover {
    background: #00a300;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.line-button-large i {
    font-size: 1.2rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }
    
    .hero-visual {
        order: 2;
    }
    
    .hero-text {
        order: 1;
    }
    
    .strategy-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }
    
    .line-qr-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .line-modal-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: var(--space-2xl) 0;
        text-align: center;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .strategy-item {
        flex-direction: column;
        text-align: center;
    }
    
    .floating-card {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .feature-card {
        padding: var(--space-lg);
    }
    
    .strategy-chart {
        padding: var(--space-lg);
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--neutral-100);
}

::-webkit-scrollbar-thumb {
    background: var(--neutral-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neutral-400);
}

/* 选择文本样式 */
::selection {
    background: var(--primary-100);
    color: var(--primary-700);
}

/* 焦点样式 */
*:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}