/* Reset and Base Styles */
* {
    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', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: #4f46e5;
    text-decoration: none;
    padding-top: 10px;
}

.nav-brand  img.brand-icon {
    max-width: 170px;
    height: auto;
}

.brand-icon {
    /* width: 60px; height: 60px; - Removed to allow natural size */
    max-height: 60px; /* Optional: limit height to prevent layout shift */
    color: #4f46e5;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: #64748b;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    outline: none !important; /* 强制移除轮廓线 */
    -webkit-tap-highlight-color: transparent; /* 移除移动端点击高亮 */
}

.nav-link:focus, .nav-link:active, .nav-link:visited {
    outline: none !important; /* 强制移除聚焦和激活状态的轮廓线 */
    border: none !important; /* 强制移除边框 */
    box-shadow: none !important; /* 强制移除可能存在的阴影 */
}

.nav-link:hover {
    color: #4f46e5;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #4f46e5;
    transition: width 0.3s ease;
}

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

.nav-cta {
    background: #4f46e5;
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    min-height: 100dvh; /* 动态视口高度，支持移动端地址栏 */
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
    color: white;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
}

/* 气泡装饰 */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle 120px at 20% 80%, rgba(255, 255, 255, 0.15) 0%, rgba(120, 119, 198, 0.4) 30%, transparent 70%),
        radial-gradient(circle 100px at 80% 20%, rgba(255, 255, 255, 0.1) 0%, rgba(255, 118, 117, 0.5) 25%, transparent 65%),
        radial-gradient(circle 80px at 40% 40%, rgba(255, 255, 255, 0.2) 0%, rgba(255, 177, 101, 0.4) 35%, transparent 75%),
        radial-gradient(circle 90px at 90% 70%, rgba(255, 255, 255, 0.12) 0%, rgba(162, 155, 254, 0.45) 28%, transparent 68%),
        radial-gradient(circle 70px at 10% 30%, rgba(255, 255, 255, 0.18) 0%, rgba(255, 206, 84, 0.4) 32%, transparent 72%),
        radial-gradient(circle 110px at 70% 90%, rgba(255, 255, 255, 0.08) 0%, rgba(74, 222, 128, 0.35) 30%, transparent 70%);
    pointer-events: none;
    animation: bubbleFloat 20s ease-in-out infinite;
}

@keyframes bubbleFloat {
    0%, 100% {
        transform: translateY(0px) scale(1) rotate(0deg);
        opacity: 0.8;
    }
    25% {
        transform: translateY(-25px) scale(1.1) rotate(90deg);
        opacity: 1;
    }
    50% {
        transform: translateY(-15px) scale(0.9) rotate(180deg);
        opacity: 0.9;
    }
    75% {
        transform: translateY(-35px) scale(1.05) rotate(270deg);
        opacity: 0.85;
    }
}

.hero::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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.7;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: #fbbf24;
    color: #1f2937;
}

.btn-primary:hover {
    background: #f59e0b;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(251, 191, 36, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: #4f46e5;
    border-color: #4f46e5;
}

.btn-outline:hover {
    background: #4f46e5;
    color: white;
}

.btn-large {
    padding: 18px 36px;
    font-size: 18px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: #fbbf24;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 24px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card-dots {
    display: flex;
    gap: 6px;
}

.card-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
}

.card-title {
    font-weight: 600;
    font-size: 14px;
}

.chat-message {
    margin-bottom: 16px;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
}

.chat-message.user {
    background: rgba(59, 130, 246, 0.2);
    margin-left: 20px;
}

.chat-message.ai {
    background: rgba(255, 255, 255, 0.1);
    margin-right: 20px;
}

.chat-message ul {
    margin-top: 8px;
    padding-left: 16px;
}

.chat-message li {
    margin-bottom: 4px;
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    margin-right: 20px;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 20px;
}

.section-description {
    font-size: 1.25rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Features Section */
.features {
    padding: 60px 0;
    background: #f8fafc;
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: 
        radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(236, 72, 153, 0.05) 0%, transparent 25%);
    pointer-events: none;
}

.features .container {
    position: relative;
    z-index: 2;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.feature-card {
    background: #ffffff;
    padding: 32px;
    border-radius: 24px;
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.02),
        0 2px 4px -1px rgba(0, 0, 0, 0.02);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(226, 232, 240, 0.8);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Define refined, high-end gradients for each card */
/* Card 1: AI (Deep Blue/Purple - Tech & Intelligence) */
.feature-card:nth-child(1) { 
    --accent-color: #4f46e5; 
    --gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%); 
    --bg-hover: linear-gradient(to bottom right, #fff, #f5f3ff);
}

/* Card 2: Notes (Deep Emerald/Teal - Calm & Focus) */
.feature-card:nth-child(2) { 
    --accent-color: #059669; 
    --gradient: linear-gradient(135deg, #059669 0%, #0d9488 100%); 
    --bg-hover: linear-gradient(to bottom right, #fff, #f0fdf4);
}

/* Card 3: Workbench (Royal Blue/Indigo - Productivity) */
.feature-card:nth-child(3) { 
    --accent-color: #2563eb; 
    --gradient: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%); 
    --bg-hover: linear-gradient(to bottom right, #fff, #eff6ff);
}

/* Card 4: Reminder (Rose/Red - Alert & Importance) */
.feature-card:nth-child(4) { 
    --accent-color: #e11d48; 
    --gradient: linear-gradient(135deg, #e11d48 0%, #be123c 100%); 
    --bg-hover: linear-gradient(to bottom right, #fff, #fff1f2);
}

/* Card 5: App Market (Amber/Orange - Energy & Variety) */
.feature-card:nth-child(5) { 
    --accent-color: #d97706; 
    --gradient: linear-gradient(135deg, #d97706 0%, #b45309 100%); 
    --bg-hover: linear-gradient(to bottom right, #fff, #fffbeb);
}

/* Card 6: Ecosystem (Cyan/Blue - Connection & Future) */
.feature-card:nth-child(6) { 
    --accent-color: #0891b2; 
    --gradient: linear-gradient(135deg, #0891b2 0%, #0284c7 100%); 
    --bg-hover: linear-gradient(to bottom right, #fff, #ecfeff);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 20px 40px -4px rgba(0, 0, 0, 0.08),
        0 8px 16px -4px rgba(0, 0, 0, 0.04);
    border-color: rgba(0,0,0,0.05);
    background: var(--bg-hover, #fff);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: white; /* Changed to white background */
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--accent-color); /* Icon takes the accent color */
    position: relative;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05); /* Subtle shadow */
    border: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.05);
    background: var(--gradient); /* Fill with gradient on hover */
    color: white; /* White icon on hover */
    box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.15);
    border-color: transparent;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    stroke-width: 2px;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 12px;
    letter-spacing: -0.025em;
}

.feature-description {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 24px;
    font-size: 0.95rem;
    flex-grow: 1;
}

.feature-list {
    list-style: none;
    padding-top: 20px;
    border-top: 1px solid #f1f5f9;
}

.feature-list li {
    padding: 6px 0;
    color: #475569;
    position: relative;
    padding-left: 24px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    width: 16px;
    height: 16px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2310b981' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

/* Hover effect for list items */
.feature-card:hover .feature-list li {
    color: #334155;
}


/* Use Cases Section */
.use-cases {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
    overflow: hidden;
}

.use-cases::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(79, 70, 229, 0.03) 0%, transparent 25%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.03) 0%, transparent 25%),
        radial-gradient(circle at 40% 40%, rgba(245, 101, 101, 0.02) 0%, transparent 25%);
    pointer-events: none;
}

.use-cases .container {
    position: relative;
    z-index: 2;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.use-case-card {
    background: #ffffff;
    padding: 32px;
    border-radius: 20px;
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.03),
        0 2px 4px -1px rgba(0, 0, 0, 0.02);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(226, 232, 240, 0.6);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Define color schemes for each use case */
.use-case-card:nth-child(1) { --accent-color: #4f46e5; --bg-color: #f0f9ff; }
.use-case-card:nth-child(2) { --accent-color: #059669; --bg-color: #f0fdf4; }
.use-case-card:nth-child(3) { --accent-color: #dc2626; --bg-color: #fef2f2; }
.use-case-card:nth-child(4) { --accent-color: #7c3aed; --bg-color: #faf5ff; }
.use-case-card:nth-child(5) { --accent-color: #0891b2; --bg-color: #ecfeff; }
.use-case-card:nth-child(6) { --accent-color: #d97706; --bg-color: #fffbeb; }

.use-case-card:hover {
    transform: translateY(-6px);
    box-shadow: 
        0 20px 40px -4px rgba(0, 0, 0, 0.06),
        0 8px 16px -4px rgba(0, 0, 0, 0.03);
    border-color: var(--accent-color);
    background: linear-gradient(to bottom right, #fff, var(--bg-color));
}

.use-case-icon {
    width: 64px;
    height: 64px;
    background: var(--bg-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--accent-color);
    position: relative;
    transition: all 0.3s ease;
    border: 2px solid rgba(0,0,0,0.02);
}

.use-case-card:hover .use-case-icon {
    transform: scale(1.05);
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 8px 20px -4px rgba(0, 0, 0, 0.15);
}

.use-case-icon svg {
    width: 32px;
    height: 32px;
}

.use-case-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 12px;
    line-height: 1.3;
}

.use-case-description {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
    flex-grow: 1;
}

.use-case-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px solid #f1f5f9;
}

.feature-tag {
    background: var(--bg-color);
    color: var(--accent-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(0,0,0,0.05);
    transition: all 0.2s ease;
}

.use-case-card:hover .feature-tag {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--accent-color);
    transform: translateY(-1px);
}


/* How It Works Section */
.how-it-works {
    padding: 120px 0;
    background: white;
}

.steps-container {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.step-item {
    text-align: center;
    position: relative;
    flex: 1;
    z-index: 2; /* 确保步骤项在连线之上 */
}

/* 连接线 */
.step-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 30px; /* 对齐圆圈中心 */
    left: calc(50% + 30px); /* 从当前项中心向右偏移圆圈半径(30px)开始 */
    width: calc(100% - 20px); /* 减小宽度，使其不完全连接到下一个圆圈 */
    height: 2px; /* 减小线条高度 */
    background: #4f46e5; /* 纯蓝色线条 */
    z-index: -1; /* 在圆圈下方 */
    /* transform: translateX(50%); 移除偏移 */
}

/* 移动端适配：隐藏连接线，改为垂直布局 */
@media (max-width: 768px) {
    .steps-container {
        flex-direction: column;
        gap: 60px;
    }
    
    .step-item:not(:last-child)::after {
        display: none;
    }
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    position: relative; /* 确保遮挡住连线 */
    box-shadow: 0 0 0 8px white; /* 白色光环，用于在视觉上隔断连线 */
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 16px;
}

.step-description {
    color: #6b7280;
    line-height: 1.7;
    margin-bottom: 32px;
}

.step-visual {
    width: 120px;
    height: 120px;
    margin: 0 auto;
    color: #4f46e5;
}

.step-visual svg {
    width: 100%;
    height: 100%;
}

/* 步骤CTA按钮 */
.steps-cta {
    text-align: center;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid #e5e7eb;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    min-width: 200px;
    position: relative;
    overflow: hidden;
}

.btn-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

.btn-large .btn-icon {
    width: 20px;
    height: 20px;
    margin-right: 8px;
    transition: transform 0.3s ease;
}

.btn-large:hover .btn-icon {
    transform: scale(1.1);
}

/* Pricing Section */
.pricing {
    padding: 120px 0;
    background: #f8fafc;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto 80px;
}

.pricing-card {
    background: white;
    border-radius: 20px;
    padding: 40px 32px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e7eb;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.pricing-card.featured {
    border: 2px solid #4f46e5;
    background: linear-gradient(to bottom, #fff, #f5f3ff);
    transform: scale(1.05);
    z-index: 10;
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #4f46e5;
    color: white;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.2);
}

.pricing-header {
    margin-bottom: 24px;
    width: 100%;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 12px;
    color: #111827;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
    margin-right: 2px;
}

.price-amount {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
}

.price-period {
    font-size: 1rem;
    color: #6b7280;
    font-weight: 500;
    margin-left: 4px;
}

.pricing-description {
    color: #6b7280;
    font-size: 1rem;
    line-height: 1.5;
}

.pricing-action {
    width: 100%;
    margin-top: auto;
}

.pricing-cta {
    display: block;
    width: 100%;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    text-align: center;
    transition: all 0.2s;
}

/* Comparison Table */
.comparison-section {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.comparison-table-wrapper {
    background: white;
    border-radius: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e7eb;
    overflow: hidden;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 20px 24px;
    text-align: center;
    border-bottom: 1px solid #f3f4f6;
}

.comparison-table th {
    background: #f9fafb;
    font-weight: 600;
    color: #374151;
    font-size: 1.1rem;
}

.comparison-table th:first-child,
.comparison-table td:first-child {
    text-align: left;
    padding-left: 40px;
    color: #111827;
    font-weight: 500;
}

.comparison-table td {
    color: #6b7280;
    font-size: 1rem;
}

.comparison-table .highlight {
    background: #f5f3ff;
    color: #4f46e5;
    font-weight: 600;
}

.comparison-table th.highlight {
    background: #eef2ff;
    color: #4f46e5;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

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

    .pricing-card.featured:hover {
        transform: scale(1.02);
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 12px 8px;
        font-size: 0.9rem;
    }
    
    .comparison-table th:first-child,
    .comparison-table td:first-child {
        padding-left: 16px;
    }
}

/* CTA Section */
.cta {
    padding: 120px 0;
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
    color: white;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.cta-description {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Download Hero Section */
.download-hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
    color: white;
    text-align: center;
}

.download-hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.download-hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.download-hero-description {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    line-height: 1.6;
}

.download-hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Download Section */
.download-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
    color: white;
}

.download-content {
    margin-top: 40px;
}

.download-category {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 30px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    text-align: left;
}

.category-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.category-icon svg {
    width: 28px;
    height: 28px;
}

.category-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: white;
}

.category-info p {
    font-size: 1.1rem;
    opacity: 0.9;
    line-height: 1.6;
    margin: 0;
}

.platform-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.platform-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

.platform-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.platform-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.platform-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.platform-icon svg {
    width: 20px;
    height: 20px;
}

.platform-info h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: white;
    margin: 0 0 4px 0;
}

.platform-info span {
    font-size: 0.9rem;
    opacity: 0.8;
    color: rgba(255, 255, 255, 0.8);
}

.download-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.download-options .download-btn {
    flex: 1;
    min-width: 120px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    padding: 10px 16px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
}

.download-options .download-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}

.download-options .download-btn.primary {
    background: rgba(251, 191, 36, 0.2);
    border-color: rgba(251, 191, 36, 0.5);
}

.download-options .download-btn.primary:hover {
    background: rgba(251, 191, 36, 0.3);
}

.download-tabs {
    margin-top: 40px;
}

/* Tab 导航 */
.tab-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 6px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    flex: 1;
    padding: 12px 24px;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
}

.tab-btn.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Tab 内容 */
.tab-content {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-top: 3px solid #fbbf24;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.download-header {
    text-align: center;
    margin-bottom: 24px;
}

.download-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: white;
}

.download-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    line-height: 1.6;
}

.download-buttons-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.download-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    padding: 16px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.download-btn.primary {
    background: rgba(251, 191, 36, 0.2);
    border-color: rgba(251, 191, 36, 0.5);
}

.download-btn.primary:hover {
    background: rgba(251, 191, 36, 0.3);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: 16px;.platform-icon {
        font-size: 2rem;
    }

    /* Download Hero Mobile */
    .download-hero {
        padding: 80px 0 60px;
    }

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

    .download-hero-description {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }

    .download-hero-stats {
        gap: 2rem;
    }

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

    /* System Requirements Mobile */
    .requirements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .requirement-card {
        padding: 1.5rem;
    }

    /* FAQ Mobile */
    .faq-question {
        font-size: 1rem;
        padding: 1.25rem 0;
    }

    .faq-answer {
        padding: 0.75rem 0 1.5rem 0;
        line-height: 1.6;
    }

    .faq-item {
        margin-bottom: 1.5rem;
    }
}

.btn-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.platform-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
}

.platform-desc {
    font-size: 0.9rem;
    opacity: 0.8;
    color: rgba(255, 255, 255, 0.8);
}

.feature-tags {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.feature-tags .tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* 移动端适配 */
@media (max-width: 768px) {
    /* Download Hero Mobile */
    .download-hero {
        padding: 80px 0 60px;
    }

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

    .download-hero-description {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }

    .download-hero-stats {
        gap: 2rem;
    }

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

    .download-section {
        padding: 40px 0;
    }
    
    .download-tabs {
        margin-top: 30px;
    }
    
    .tab-nav {
        max-width: 300px;
        margin-bottom: 24px;
        padding: 4px;
    }
    
    .tab-btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
    
    .tab-content {
        padding: 24px 16px;
    }
    
    .download-header {
        margin-bottom: 20px;
    }
    
    .download-buttons-row {
        grid-template-columns: 1fr;
        gap: 12px;
        margin-bottom: 16px;
    }
    
    .download-btn {
        padding: 14px;
    }
    
    .btn-content {
        gap: 12px;
    }
    
    .platform-icon {
        font-size: 1.5rem;
    }
    
    .platform-name {
        font-size: 1rem;
    }
    
    .platform-desc {
        font-size: 0.85rem;
    }

    /* System Requirements Mobile */
    .requirements-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .requirement-card {
        padding: 1.5rem;
    }

    /* FAQ Mobile */
    .faq-question {
        font-size: 1rem;
        padding: 1.25rem 0;
    }

    .faq-answer {
        padding: 0.75rem 0 1.5rem 0;
        line-height: 1.6;
    }

    .faq-item {
        margin-bottom: 1.5rem;
    }
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 80px;
    margin-bottom: 20px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 20px;
}

.footer-description {
    color: #9ca3af;
    line-height: 1.6;
    margin-bottom: 16px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #9ca3af;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #4f46e5;
    color: white;
}

.social-links svg {
    width: 20px;
    height: 20px;
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #4f46e5;
}

.contact-info p {
    color: #9ca3af;
    margin-bottom: 8px;
}

.footer-contact {
    justify-self: end;
    align-self: end;
    text-align: right;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid #374151;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.footer-copyright {
    color: #9ca3af;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: #4f46e5;
}

/* System Requirements */
.system-requirements {
    padding: 80px 0;
    background: #f8fafc;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.requirement-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.requirement-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.requirement-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
    color: #4f46e5;
}

.requirement-icon svg {
    width: 100%;
    height: 100%;
}

.requirement-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

.requirement-card ul {
    list-style: none;
    padding: 0;
    text-align: left;
}

.requirement-card li {
    padding: 0.5rem 0;
    color: #6b7280;
    position: relative;
    padding-left: 1.5rem;
}

.requirement-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background: white;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 2rem;
}

.faq-question {
    width: 100%;
    padding: 1.5rem 0;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: #4f46e5;
}

.faq-answer {
    padding: 1rem 0 2rem 0;
    color: #6b7280;
    line-height: 1.7;
    display: none;
}

.faq-answer.active {
    display: block;
}

.faq-icon {
    transition: transform 0.3s ease;
}

.faq-question.active .faq-icon {
    transform: rotate(180deg);
}

/* Pricing Page Specific Styles */
.pricing-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    padding: 120px 0 80px !important;
    min-height: auto !important;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

/* 完全移除基础hero的装饰效果 */
.pricing-hero::after {
    display: none !important;
    content: none !important;
    background: none !important;
    animation: none !important;
}

.pricing-hero .hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.pricing-hero .hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.pricing-hero .hero-description {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.faq {
    padding: 80px 0;
    background: #f8fafc;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.faq-item {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.faq-question {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 15px;
}

.faq-answer {
    color: #4a5568;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1024px) and (min-width: 769px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .pricing-card {
        padding: 30px 20px;
    }
}

/* 超大屏幕设备 (1440px+) */
@media (min-width: 1440px) {
    .hero {
        min-height: 100vh;
        padding: 160px 0 100px;
    }
    
    .pricing-hero {
        min-height: auto !important;
        padding: 140px 0 100px !important;
    }
    
    .hero-container {
        max-width: 1400px;
        gap: 80px;
    }
    
    .hero-title {
        font-size: 4rem;
        line-height: 1.1;
    }
    
    .hero-description {
        font-size: 1.4rem;
        line-height: 1.7;
    }
}

/* 大屏幕设备 (1025px - 1439px) */
@media (max-width: 1439px) and (min-width: 1025px) {
    .hero {
        min-height: 95vh;
        padding: 150px 0 90px;
    }
    
    .pricing-hero {
        min-height: auto !important;
        padding: 130px 0 90px !important;
    }
    
    .hero-container {
        gap: 70px;
    }
    
    .hero-title {
        font-size: 3.8rem;
    }
    
    .hero-description {
        font-size: 1.3rem;
    }
}

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .hero {
        min-height: 90vh;
        padding: 120px 0 60px;
    }
    
    .pricing-hero {
        min-height: auto !important;
        padding: 110px 0 70px !important;
    }
    
    .hero-container {
        gap: 50px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
}

/* 移动设备 (最大768px) */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }
    
    /* 移动端头部logo优化 */
    .nav-brand img.brand-icon {
        max-width: 120px;
    }

    .hero {
        min-height: 100vh;
        padding: 100px 0 60px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
    }

    .hero-description {
        font-size: 1.1rem;
        margin-bottom: 30px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        margin-bottom: 40px;
    }

    .hero-stats {
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
    }
    
    .stat-item {
        min-width: 80px;
    }
    
    .hero-visual {
        order: -1;
        margin-bottom: 20px;
    }
    
    .hero-card {
        max-width: 350px;
        margin: 0 auto;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .pricing-hero {
        padding: 100px 0 60px !important;
        min-height: auto !important;
    }

    .pricing-hero .hero-title {
        font-size: 2.2rem;
    }

    .pricing-hero .hero-description {
        font-size: 1rem;
        padding: 0 20px;
    }

    .faq-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .faq-item {
        padding: 20px;
    }

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

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

    .use-case-card {
        padding: 24px;
    }

    .use-case-icon {
        width: 56px;
        height: 56px;
    }

    .use-case-icon svg {
        width: 28px;
        height: 28px;
    }

    .steps-container {
        grid-template-columns: 1fr;
    }

    .steps-cta {
        margin-top: 40px;
        padding-top: 30px;
    }

    .btn-large {
        padding: 14px 28px;
        font-size: 1rem;
        min-width: 180px;
    }

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

    .pricing-card.featured {
        transform: none;
    }

    .download-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 60px;
    }

    .download-card {
        padding: 30px;
    }

    .download-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 20px;
    }

    .download-icon svg {
        width: 35px;
        height: 35px;
    }

    .download-title {
        font-size: 1.3rem;
    }

    .download-features {
        justify-content: center;
    }

    .requirements-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .requirement-item {
        padding: 20px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .footer-contact {
        text-align: left;
        justify-self: start;
        align-self: start;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    /* 移动端联系我们邮箱优化 */
    .contact-info p {
        font-size: 0.9rem;
        word-break: break-all;
        line-height: 1.4;
        padding: 0 10px;
    }
}

/* 小屏幕移动设备 (最大480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        min-height: 100vh;
        padding: 80px 0 40px;
    }
    
    .hero-container {
        padding: 0 16px;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
        margin-bottom: 20px;
    }
    
    .hero-description {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 25px;
    }
    
    .hero-actions {
        gap: 12px;
        margin-bottom: 30px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .hero-stats {
        gap: 15px;
        margin-top: 20px;
    }
    
    .stat-item {
        min-width: 70px;
        text-align: center;
    }
    
    .stat-number {
        font-size: 1.2rem;
        display: block;
    }
    
    .stat-label {
        font-size: 0.8rem;
        display: block;
        margin-top: 2px;
    }
    
    .hero-visual {
        margin-top: 30px;
    }
    
    .hero-card {
        max-width: 300px;
        transform: scale(0.9);
    }

    /* 移动端气泡效果调整 */
    .hero::after {
        background-image: 
            radial-gradient(circle 80px at 15% 85%, rgba(255, 255, 255, 0.2) 0%, rgba(120, 119, 198, 0.5) 25%, transparent 60%),
            radial-gradient(circle 70px at 85% 15%, rgba(255, 255, 255, 0.15) 0%, rgba(255, 118, 117, 0.6) 30%, transparent 65%),
            radial-gradient(circle 60px at 50% 50%, rgba(255, 255, 255, 0.25) 0%, rgba(255, 177, 101, 0.45) 35%, transparent 70%),
            radial-gradient(circle 75px at 20% 20%, rgba(255, 255, 255, 0.18) 0%, rgba(162, 155, 254, 0.5) 28%, transparent 62%);
        animation: bubbleFloatMobile 15s ease-in-out infinite;
    }

    @keyframes bubbleFloatMobile {
        0%, 100% {
            transform: translateY(0px) scale(1) rotate(0deg);
            opacity: 0.9;
        }
        33% {
            transform: translateY(-20px) scale(1.15) rotate(120deg);
            opacity: 1;
        }
        66% {
            transform: translateY(-10px) scale(0.95) rotate(240deg);
            opacity: 0.85;
        }
    }

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

    .section-title {
        font-size: 1.75rem;
    }

    .feature-card {
        padding: 24px;
    }

    .pricing-card {
        padding: 24px;
    }
    
    /* 小屏幕移动端联系我们邮箱进一步优化 */
    .contact-info p {
        font-size: 0.85rem;
        word-break: break-all;
        line-height: 1.5;
        padding: 0 5px;
        margin-bottom: 10px;
    }
    
    .footer-title {
        font-size: 1rem;
        margin-bottom: 12px;
    }
    
    /* 小屏幕下联系我们左对齐 */
    .footer-contact {
        text-align: left;
        justify-self: start;
        align-self: start;
    }
}

/* FAQ Toggle Styles */
.faq-answer {
    display: none;
    padding-top: 10px;
}

.faq-answer.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.faq-question {
    cursor: pointer;
    user-select: none;
}

.faq-question .faq-icon {
    transition: transform 0.3s ease;
}

.faq-question.active .faq-icon {
    transform: rotate(180deg);
}

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

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

.feature-card,
.step-item,
.pricing-card {
    animation: fadeInUp 0.6s ease forwards;
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
.btn:focus,
.nav-link:focus {
    outline: 2px solid #4f46e5;
    outline-offset: 2px;
}

.footer-copyright a span{
    margin-right: 5px;
}