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

:root {
    --primary-color: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --secondary-color: #6366f1;
    --accent-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #475569;
    --gradient-start: #0ea5e9;
    --gradient-end: #8b5cf6;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

html {
    scroll-behavior: smooth;
}

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

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
}

.logo-icon {
    font-size: 24px;
}

.logo-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

/* Hero区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(14, 165, 233, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.3);
    border-radius: 50px;
    font-size: 14px;
    color: var(--primary-light);
    margin-bottom: 24px;
}

.hero-title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 16px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 24px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.hero-desc {
    font-size: 17px;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-contact {
    margin-top: 32px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-hint {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.hero-qr {
    width: 180px;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

/* Hero图片展示 */
.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.screenshot-showcase {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl), 0 0 60px rgba(14, 165, 233, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.main-screenshot {
    width: 580px;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
}

/* 通用区域标题 */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.3);
    border-radius: 50px;
    font-size: 13px;
    color: var(--primary-light);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title {
    font-size: 38px;
    font-weight: 700;
    margin-bottom: 16px;
}

/* 软件介绍区域 */
.intro {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.intro-text p {
    font-size: 17px;
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.8;
}

.intro-text strong {
    color: var(--text-primary);
}

.intro-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.intro-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.intro-icon {
    font-size: 24px;
}

.intro-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* 核心功能详解 */
.features {
    padding: 100px 0;
    background: var(--bg-primary);
}

.feature-detail {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.feature-block.reverse {
    direction: rtl;
}

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

.feature-info h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.feature-info p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.8;
}

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

.feature-info li {
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
    color: var(--text-secondary);
    font-size: 15px;
}

.feature-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.feature-img img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 应用场景 */
.use-cases {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.case-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.case-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.case-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* 界面展示 */
.showcase {
    padding: 100px 0;
    background: var(--bg-primary);
}

.showcase-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.gallery-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.gallery-item img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
}

.gallery-item p {
    padding: 16px;
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}

/* 使用条款 */
.terms {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05), rgba(245, 158, 11, 0.05));
}

.terms-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.term-item {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.term-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.term-item p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.terms-note {
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
}

/* 版本价格 */
.pricing {
    padding: 100px 0;
    background: var(--bg-primary);
}

.pricing-cards {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.pricing-card {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: 40px;
    width: 380px;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.popular {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(139, 92, 246, 0.1));
    border-color: rgba(14, 165, 233, 0.5);
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    color: white;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-secondary);
}

.amount {
    font-size: 56px;
    font-weight: 700;
    color: var(--text-primary);
}

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

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 15px;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features .check {
    color: var(--success-color);
    font-weight: 700;
}

.pricing-features .cross {
    color: var(--error-color);
    font-weight: 700;
}

.pricing-note {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    max-width: 500px;
    margin: 0 auto;
}

.pricing-note p {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 获取软件 */
.contact-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.contact-info h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 32px;
}

.contact-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.c-step {
    display: flex;
    align-items: center;
    gap: 16px;
}

.c-num {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    flex-shrink: 0;
}

.c-step p {
    font-size: 16px;
    color: var(--text-secondary);
}

.contact-notes {
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--warning-color);
}

.contact-notes p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.contact-notes p:last-child {
    margin-bottom: 0;
}

.contact-qr-large {
    text-align: center;
}

.contact-qr-large img {
    width: 280px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    margin-bottom: 16px;
}

.contact-qr-large p {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 页脚 */
.footer {
    padding: 60px 0 24px;
    background: var(--bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 12px;
}

.footer-links {
    display: flex;
    gap: 64px;
}

.link-group h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.link-group a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-note {
    margin-top: 8px;
    font-size: 12px !important;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 140px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-contact {
        display: inline-block;
    }
    
    .hero-image {
        margin-top: 48px;
    }
    
    .main-screenshot {
        width: 100%;
        max-width: 500px;
    }
    
    .intro-content,
    .feature-block,
    .contact-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .feature-block.reverse {
        direction: ltr;
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .showcase-gallery,
    .terms-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .intro-features {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}