/* :root {
    --primary: #0066FF;
    --secondary: #00CCFF;
    --dark: #003366;
    --light: #F0F8FF;
    --accent: #FF9900;
    --paper: #F5F5F0;
    --roll: #8B5A2B;
}

body {
    font-family: 'Alibaba PuHuiTi', sans-serif;
    line-height: 1.8;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: var(--paper);
    background-image: 
        linear-gradient(var(--paper) 1px, transparent 1px),
        linear-gradient(90deg, var(--paper) 1px, transparent 1px);
    background-size: 20px 20px;
}

.container {
    max-width: 100%;
    overflow-x: hidden;
} */

/* 卷筒纸风格头部 */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, var(--roll) 100%);
    color: white;
    /* padding: 80px 20px 120px; */
    text-align: center;
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 70% 30%, rgba(255,255,255,0.1) 0%, transparent 50%),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect x="20" y="20" width="60" height="60" rx="30" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="2"/><rect x="30" y="30" width="40" height="40" rx="20" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="2"/></svg>');
}

.hero h1 {
    font-size: 2.5rem;
    margin: 0 0 15px;
    font-weight: 700;
    position: relative;
    text-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.highlight {
    background: linear-gradient(120deg, var(--accent) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
}

.filter-section{
    background: linear-gradient(90deg, var(--dark) 0%, var(--primary) 100%);
    /* background-color: blue; */
    color: white;
    padding: 30px 20px 20px;
    margin-top: 95px;
    /* text-align: center; */
    /* position: relative; */
    /* clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%); */
    box-shadow: 0 0 20px rgba(96, 125, 255, 0.8);    
}

/* 分切可视化效果 */
.cutting-visual {
    position: relative;
    height: 200px;
    margin: -30px auto 10px;
    max-width: 800px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
}

.paper-roll {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 80px;
    height: 120px;
    background: var(--paper);
    border: 2px solid #DDD;
    border-radius: 40px 5px 5px 40px;
}

.cutting-line {
    position: absolute;
    left: 120px;
    top: 0;
    width: 2px;
    height: 100%;
    background: repeating-linear-gradient(to bottom, transparent, transparent 9px, var(--accent) 13px);
    animation: cutting 3s linear infinite;
}

@keyframes cutting {
    0% { left: 120px; }
    100% { left: calc(100% - 20px); }
}

.cut-paper {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 60px;
    background: var(--paper);
    border: 1px solid #DDD;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.1);
}

/* 产品特色 */
.features-section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
    border-top: 3px solid var(--roll);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.feature-card h3 {
    color: var(--dark);
    margin-top: 0;
    font-size: 1.4rem;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--roll) 0%, var(--dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
    font-size: 1.8rem;
    box-shadow: 0 5px 15px rgba(139, 90, 43, 0.2);
}

/* 分切流程 */
.process-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, #f5f5f0 0%, #e8e5d8 100%);
    text-align: center;
}

.process-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 1000px;
    margin: 40px auto 0;
    position: relative;
}

.process-steps::before {
    content: "";
    position: absolute;
    top: 40px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--roll), var(--primary));
    z-index: 1;
}

.process-step {
    width: 180px;
    margin: 0 15px 40px;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--roll) 0%, var(--dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    margin: 0 auto 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.step-content {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    min-height: 180px;
    border: 1px solid #e8e5d8;
}

.step-content h4 {
    margin-top: 0;
    color: var(--roll);
}

/* 客户案例 */
.case-section {
    padding: 80px 20px;
    background: white;
    text-align: center;
}

.case-card {
    max-width: 800px;
    margin: 40px auto;
    padding: 40px;
    background: linear-gradient(135deg, #f5f5f0 0%, #e8e5d8 100%);
    border-radius: 12px;
    position: relative;
    border-left: 5px solid var(--roll);
}

.case-card::before {
    content: "";
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 5rem;
    color: rgba(139, 90, 43, 0.1);
    font-family: serif;
    line-height: 1;
}

.case-content {
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 20px;
}

.case-author {
    font-weight: 700;
    color: var(--dark);
}

/* 数据看板 */
.stats-section {
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--roll) 0%, var(--dark) 100%);
    color: white;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 40px auto 0;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 5px;
    background: linear-gradient(120deg, var(--secondary) 0%, white 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* CTA部分 */
.cta-section {
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(135deg, #f5f5f0 0%, #e8e5d8 100%);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .process-step {
        margin-bottom: 30px;
    }
    
    .case-card {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 20px 100px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}