/* 全局样式 - 明亮时尚风格 */
:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary: #f472b6;
    --secondary-light: #f9a8d4;
    --accent: #06b6d4;
    --accent-light: #67e8f9;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-accent: linear-gradient(135deg, #f472b6 0%, #ec4899 100%);
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    --radius: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: inherit;
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-tag {
    font-size: 12px;
    padding: 4px 10px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 500;
}

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

.nav a {
    font-size: 15px;
    color: var(--text-secondary);
    transition: var(--transition);
    font-weight: 500;
}

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

.nav-cta {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: white !important;
    border-radius: var(--radius-full);
    font-weight: 600;
}

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

.mobile-menu {
    display: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
}

/* 英雄区域 */
.hero {
    position: relative;
    padding: 140px 0 100px;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-shapes {
    position: absolute;
    inset: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.5;
    filter: blur(80px);
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-light);
    top: -100px;
    right: 10%;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary-light);
    bottom: 10%;
    left: 5%;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: var(--accent-light);
    top: 40%;
    right: 30%;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-primary);
}

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

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

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

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

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

.btn-primary-full {
    width: 100%;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
}

.btn-outline-full {
    width: 100%;
    justify-content: center;
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-full {
    width: 100%;
}

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

.stat-item {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 英雄视觉 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: #1e293b;
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-xl);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 32px;
    overflow: hidden;
}

.app-header {
    height: 60px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.app-banner {
    height: 120px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.app-products {
    padding: 16px;
    display: flex;
    gap: 12px;
}

.product-card {
    flex: 1;
    height: 80px;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
}

.floating-card {
    position: absolute;
    padding: 12px 20px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    font-weight: 500;
    color: var(--text-primary);
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    left: 0;
    animation-delay: 0s;
}

.card-2 {
    top: 40%;
    right: 0;
    animation-delay: 1s;
}

.card-3 {
    bottom: 15%;
    left: 10%;
    animation-delay: 2s;
}

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

/* 通用区块 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
}

/* 解决方案 */
.solutions {
    padding: 100px 0;
    background: var(--bg-primary);
}

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

.solution-card {
    padding: 40px 32px;
    background: var(--bg-primary);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

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

.solution-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.solution-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.solution-card p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.solution-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.solution-tags span {
    font-size: 12px;
    padding: 4px 12px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--bg-primary);
    border-radius: var(--radius);
    transition: var(--transition);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius);
    font-size: 20px;
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.feature-content p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 技术架构 */
.tech-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
}

.tech-section .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tech-content {
    max-width: 400px;
}

.tech-content .section-tag {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.tech-content h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 16px;
}

.tech-content p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius);
    transition: var(--transition);
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.tech-icon {
    font-size: 32px;
}

.tech-item span {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

/* 成功案例 */
.cases {
    padding: 100px 0;
    background: var(--bg-primary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 280px);
    gap: 20px;
}

.case-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-tertiary);
}

.case-card.case-large {
    grid-column: span 2;
}

.case-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-end;
}

.case-1 { background: linear-gradient(135deg, #f472b6 0%, #ec4899 100%); }
.case-2 { background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%); }
.case-3 { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }
.case-4 { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); }
.case-5 { background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%); }

.case-overlay {
    width: 100%;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.3);
    color: white;
    font-weight: 600;
}

.case-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
}

.case-info h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
}

.case-info p {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 12px;
}

.case-tags {
    display: flex;
    gap: 8px;
}

.case-tags span {
    font-size: 11px;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

/* 价格方案 */
.pricing {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.pricing-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.pricing-popular {
    position: relative;
    border: 2px solid var(--primary);
    transform: scale(1.05);
}

.popular-tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: var(--gradient-primary);
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-full);
}

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

.pricing-header h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.currency {
    font-size: 20px;
    color: var(--text-secondary);
}

.amount {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-primary);
}

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

.pricing-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

.pricing-features {
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--bg-tertiary);
}

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

.pricing-features i {
    color: var(--success);
    font-size: 14px;
}

/* 服务流程 */
.process-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.process-steps {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.process-step {
    text-align: center;
    flex: 1;
    max-width: 200px;
}

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

.step-number {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.process-step h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.process-step p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 合作伙伴 */
.partners {
    padding: 60px 0;
    background: var(--bg-tertiary);
}

.partner-logos {
    display: flex;
    justify-content: center;
    gap: 60px;
}

.partner-item {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-light);
    opacity: 0.6;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: var(--bg-primary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: start;
}

.contact-info .section-tag {
    margin-bottom: 16px;
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
}

.contact-info > p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
}

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

.contact-item h4 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-form-wrapper {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: var(--radius-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius);
    font-size: 15px;
    transition: var(--transition);
    background: white;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background: #0f172a;
    color: white;
    padding: 60px 0 24px;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

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

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
}

/* 响应式 */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-visual {
        display: none;
    }
    
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-section .container {
        flex-direction: column;
        gap: 40px;
    }
    
    .tech-stack {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }
    
    .case-card.case-large {
        grid-column: span 1;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .pricing-popular {
        transform: none;
    }
    
    .process-steps {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .solutions-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-stack {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}