/* ==================== 全局样式 ==================== */
:root {
    /* 主色调 - 科技蓝紫渐变 */
    --primary-color: #4A6CF7;
    --secondary-color: #7B68EE;
    --accent-color: #FF4D6D;
    --success-color: #06D6A0;

    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);

    /* 中性色 */
    --dark-bg: #0a0e27;
    --dark-surface: #151932;
    --light-bg: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;

    /* 玻璃态效果 */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --shadow-colored: 0 8px 32px rgba(74, 108, 247, 0.3);

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

/* ==================== 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(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition-normal);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
}

.brand-icon {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

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

.nav-menu a:not(.btn-nav):hover {
    color: var(--primary-color);
}

.nav-menu a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}

.nav-menu a:not(.btn-nav):hover::after {
    width: 100%;
}

.btn-nav {
    padding: 0.5rem 1.5rem;
    background: var(--gradient-primary);
    color: white !important;
    border-radius: 50px;
    transition: var(--transition-fast);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition-fast);
}

/* ==================== Hero区域 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    opacity: 0.05;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    bottom: -100px;
    right: -100px;
    animation-delay: 2s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    top: 50%;
    right: 10%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-text {
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-colored);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.2rem;
}

/* 统计数据 */
.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* Hero图片展示 */
.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mockup-container {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.mockup-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: var(--gradient-primary);
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.5; transform: translate(-50%, -50%) scale(1.1); }
}

.mockup-phone {
    position: relative;
    width: 320px;
    height: 650px;
    background: #000000;
    border-radius: 45px;
    padding: 12px;
    box-shadow: 0 2px 80px rgba(0, 0, 0, 0.4),
                inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

/* iPhone灵动岛 */
.dynamic-island {
    position: absolute;
    top: 25px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 37px;
    background: #000000;
    border-radius: 20px;
    z-index: 10;
    box-shadow: 0 4px 2px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.island-content {
    width: 80%;
    height: 60%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    opacity: 0.3;
    animation: islandPulse 3s ease-in-out infinite;
}

@keyframes islandPulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.05); }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 35px;
    overflow: hidden;
    position: relative;
}

/* 状态栏 */
.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 50px 20px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #333;
}

.status-time {
    font-weight: 600;
}

.status-icons {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 屏幕内容 */
.screen-content {
    height: calc(100% - 70px);
    padding: 0 20px 20px;
    display: flex;
    flex-direction: column;
}

/* App标题栏 */
.app-header {
    text-align: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.app-title {
    font-size: 1rem;
    font-weight: 700;
    color: #333;
    margin: 0;
}

/* 演示容器 */
.demo-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}

.demo-section {
    text-align: center;
}

/* 迷你聊天展示 */
.mini-chat {
    background: white;
    border-radius: 15px;
    padding: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    min-width: 200px;
}

.chat-msg {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    margin-bottom: 10px;
}

.chat-msg:last-child {
    margin-bottom: 0;
}

.chat-msg.msg-right {
    flex-direction: row-reverse;
}

.msg-avatar {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.msg-bubble {
    background: #f0f0f0;
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    color: #333;
    max-width: 120px;
    animation: msgSlideIn 0.5s ease forwards;
}

.msg-bubble.msg-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

@keyframes msgSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.demo-label {
    margin-top: 10px;
    font-size: 0.75rem;
    color: #666;
    font-weight: 600;
}

/* 转换箭头 */
.transform-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.arrow-icon {
    font-size: 2rem;
    color: var(--primary-color);
    animation: arrowBounce 1.5s ease-in-out infinite;
}

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

.arrow-text {
    font-size: 0.7rem;
    color: var(--primary-color);
    font-weight: 600;
}

/* PDF结果展示 */
.pdf-result {
    background: white;
    border-radius: 15px;
    padding: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.pdf-doc {
    width: 140px;
    height: 100px;
    background: #fefefe;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.pdf-header {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    text-align: center;
}

.pdf-lines {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.pdf-line {
    height: 3px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
    opacity: 0.6;
}

.pdf-line.short {
    width: 60%;
}

/* 底部按钮 */
.demo-button {
    padding-top: 15px;
}

.btn-start {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    animation: btnPulse 2s ease-in-out infinite;
}

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

.btn-icon {
    font-size: 1.2rem;
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    cursor: pointer;
    animation: floatUpDown 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-left: 3px solid var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
    transform: rotate(-45deg);
}

@keyframes floatUpDown {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, 10px); }
}

/* ==================== 通用区块样式 ==================== */
section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--primary-color);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* ==================== 功能特点 ==================== */
.features {
    background: #f9fafb;
}

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

.feature-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: 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: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.feature-icon {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-sm);
}

.icon-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 20px;
    opacity: 0.1;
    transform: rotate(45deg);
}

.icon-emoji {
    position: relative;
    font-size: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.feature-highlight {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: var(--gradient-success);
    color: white;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ==================== 模板展示 ==================== */
.templates {
    background: white;
}

.template-showcase {
    max-width: 900px;
    margin: 0 auto;
}

.template-slider {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    background: white;
    box-shadow: var(--shadow-lg);
}

.template-slide {
    display: none;
    padding: var(--spacing-lg);
}

.template-slide.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

.template-preview {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
}

.template-image {
    max-width: 100%;
    max-height: 500px;
    width: auto;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: var(--transition-normal);
    border: 2px solid #e5e7eb;
}

.template-image:hover {
    transform: scale(1.02);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.2);
    border-color: var(--primary-color);
}

.template-info {
    text-align: center;
}

.template-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.template-info p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.slider-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.slider-btn {
    width: 50px;
    height: 50px;
    border: none;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-colored);
}

.slider-dots {
    display: flex;
    gap: 10px;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #d1d5db;
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-dot.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: 10px;
}

/* ==================== 会员套餐 ==================== */
.pricing {
    background: #f9fafb;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border: 3px solid var(--primary-color);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.08) translateY(-10px);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background: var(--gradient-secondary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid #f3f4f6;
    margin-bottom: var(--spacing-md);
}

.pricing-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.price {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.pricing-features li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
}

.check {
    color: var(--success-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.pricing-card .btn {
    width: 100%;
    justify-content: center;
}

/* ==================== 分销系统 ==================== */
.distribution {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.distribution-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.distribution-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.distribution-card h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.distribution-card p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

/* ==================== 下载CTA ==================== */
.download {
    background: white;
    text-align: center;
}

.download-content h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.download-content p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--dark-bg);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    margin-top: 0.5rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.footer-column h4 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* ==================== 弹窗 ==================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-xl);
    max-width: 400px;
    width: 90%;
    text-align: center;
    animation: modalSlideUp 0.3s ease;
}

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

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 35px;
    height: 35px;
    border: none;
    background: #f3f4f6;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: #e5e7eb;
    transform: rotate(90deg);
}

.modal-content h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
}

.qr-placeholder {
    margin: var(--spacing-md) 0;
}

.qr-box {
    width: 250px;
    height: 250px;
    margin: 0 auto;
    background: #f9fafb;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #d1d5db;
}

.modal-tip {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==================== 图片预览弹窗 ==================== */
.image-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-preview-modal.active {
    opacity: 1;
}

.image-preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
}

.image-preview-container {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.image-preview-close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 45px;
    height: 45px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-preview-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.image-preview-img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.image-preview-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 50px;
    backdrop-filter: blur(10px);
}

.image-preview-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-preview-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.image-preview-counter {
    color: white;
    font-weight: 600;
    font-size: 1rem;
    min-width: 80px;
    text-align: center;
}

/* ==================== 动画效果 ==================== */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: var(--spacing-md);
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

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

    .hamburger {
        display: flex;
    }

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

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

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

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

    .hero-image {
        order: -1;
    }

    .mockup-phone {
        transform: scale(0.8);
    }

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

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

    .pricing-card.featured {
        transform: scale(1);
    }

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

    section {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .stat-number {
        font-size: 2rem;
    }
}