<style>
/* 基础样式重置 - 增强版 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
	color: blue;
}

/* 全局变量定义 - 便于统一管理 */
:root {
    --primary: #4299e1;
    --secondary: #38b2ac;
    --accent: #9f7aea;
    --dark: #2d3748;
    --light: #f8f9fa;
    --gray: #e2e8f0;
    --success: #48bb78;
    --warning: #ed8936;
    --danger: #e53e3e;
    --radius: 12px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-md: 0 6px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 10px 24px rgba(0,0,0,0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 笔盒产品介绍样式 - 优化版 */
.pencil-case-intro {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #333;
    line-height: 1.7;
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 0;
}

/* Banner图优化 - 增加渐变叠加 */
.pencil-case-banner {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin-bottom: 40px;
    box-shadow: var(--shadow);
    object-fit: cover;
    transition: var(--transition);
}

.pencil-case-banner:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* 区块样式优化 */
.pencil-case-section {
    margin-bottom: 50px;
    padding: 0 15px;
    position: relative;
}

/* 标题样式升级 */
.pencil-case-title {
    font-size: 28px;
    color: var(--dark);
    margin-bottom: 25px;
    padding-bottom: 12px;
    border-bottom: 3px solid var(--primary);
    display: inline-block;
    position: relative;
    font-weight: 700;
}

.pencil-case-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent);
    border-radius: 3px;
}

/* 网格布局优化 */
.pencil-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 35px;
}

/* 特性卡片增强 */
.pencil-case-feature {
    background: white;
    padding: 30px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--gray);
    position: relative;
    overflow: hidden;
}

.pencil-case-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: var(--transition);
}

.pencil-case-feature:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.pencil-case-feature:hover::before {
    transform: scaleX(1);
}

.pencil-case-feature-icon {
    font-size: 42px;
    color: var(--primary);
    margin-bottom: 20px;
    transition: var(--transition);
}

.pencil-case-feature:hover .pencil-case-feature-icon {
    color: var(--accent);
    transform: scale(1.1);
}

.pencil-case-feature-title {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 12px;
    font-weight: 600;
}

.pencil-case-feature p {
    color: #666;
    font-size: 15px;
    line-height: 1.6;
}

/* 材质工艺区域优化 */
.pencil-case-material {
    display: flex;
    flex-wrap: wrap;
    gap: 35px;
    align-items: center;
    margin-bottom: 40px;
}

.pencil-case-material-img {
    flex: 1;
    min-width: 320px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.pencil-case-material-img:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.pencil-case-material-img img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.pencil-case-material-img:hover img {
    transform: scale(1.03);
}

.pencil-case-material-content {
    flex: 1;
    min-width: 320px;
}

.pencil-case-material-content h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pencil-case-material-content h3::before {
    content: '';
    width: 4px;
    height: 24px;
    background-color: var(--primary);
    border-radius: 2px;
}

.pencil-case-material-content ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 20px;
}

.pencil-case-material-content li {
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
    border-bottom: 1px solid #f0f4f8;
    color: #4a5568;
    font-size: 16px;
}

.pencil-case-material-content li:last-child {
    border-bottom: none;
}

.pencil-case-material-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 10px;
    color: var(--success);
    font-weight: bold;
    font-size: 18px;
}

.pencil-case-material-content li strong {
    color: var(--dark);
}

.pencil-case-material-content p {
    color: #718096;
    font-size: 15px;
    line-height: 1.7;
}

/* 规格参数优化 */
.pencil-case-specs {
    background: #f7fafc;
    padding: 35px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid #e8f4f8;
}

.pencil-case-specs-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.pencil-case-specs-table tr {
    transition: var(--transition);
}

.pencil-case-specs-table tr:hover {
    background-color: rgba(66, 153, 225, 0.03);
}

.pencil-case-specs-table td {
    padding: 16px 20px;
    font-size: 16px;
}

.pencil-case-specs-table td:first-child {
    font-weight: 600;
    color: var(--dark);
    width: 35%;
    background-color: #fafbfc;
    border-right: 1px solid #e2e8f0;
}

.pencil-case-specs-table tr:first-child td:first-child {
    border-top-left-radius: 8px;
}

.pencil-case-specs-table tr:first-child td:last-child {
    border-top-right-radius: 8px;
}

.pencil-case-specs-table tr:last-child td:first-child {
    border-bottom-left-radius: 8px;
}

.pencil-case-specs-table tr:last-child td:last-child {
    border-bottom-right-radius: 8px;
}

.pencil-case-specs-table tr:not(:last-child) td {
    border-bottom: 1px solid #e2e8f0;
}

/* 使用场景优化 */
.pencil-case-scenarios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.pencil-case-scenario {
    background: white;
    padding: 25px;
    border-radius: var(--radius);
    border: 1px solid #f0f8fb;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.pencil-case-scenario:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
}

.pencil-case-scenario-icon {
    font-size: 36px;
    color: var(--primary);
    margin-bottom: 15px;
    transition: var(--transition);
}

.pencil-case-scenario:hover .pencil-case-scenario-icon {
    color: var(--accent);
    transform: scale(1.1);
}

.pencil-case-scenario h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--dark);
    font-weight: 600;
}

.pencil-case-scenario p {
    color: #718096;
    font-size: 14px;
    line-height: 1.6;
}

/* 购买号召优化 - 增强视觉冲击力 */
.pencil-case-cta {
    text-align: center;
    margin: 50px 15px 30px;
    padding: 45px 30px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius);
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.pencil-case-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, rgba(255,255,255,0.15) 0%, transparent 50%);
    transition: var(--transition);
}

.pencil-case-cta:hover::before {
    background: radial-gradient(circle at 80% 20%, rgba(255,255,255,0.15) 0%, transparent 50%);
}

.pencil-case-cta-title {
    font-size: 26px;
    margin-bottom: 20px;
    font-weight: 700;
    position: relative;
}

.pencil-case-cta-desc {
    margin-bottom: 25px;
    font-size: 18px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.pencil-case-cta-btn {
    display: inline-block;
    padding: 15px 40px;
    background: white;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    font-size: 17px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

.pencil-case-cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(66, 153, 225, 0.1), transparent);
    transition: var(--transition);
}

.pencil-case-cta-btn:hover {
    background: #fdfdfe;
    color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.pencil-case-cta-btn:hover::before {
    left: 100%;
}

/* 语言区块样式优化 */
.language-section {
    margin-bottom: 60px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.language-header {
    background: linear-gradient(90deg, var(--dark), #4a5568);
    color: white;
    padding: 14px 25px;
    border-radius: var(--radius) var(--radius) 0 0;
    font-weight: 600;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.language-header::before {
    content: '';
    width: 4px;
    height: 20px;
    background-color: var(--primary);
    border-radius: 2px;
}

.language-content {
    border: 1px solid var(--gray);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    background-color: white;
    padding: 20px;
}

/* 响应式优化 - 更精细的断点设计 */
@media (max-width: 1024px) {
    .pencil-case-title {
        font-size: 24px;
    }
    
    .pencil-case-specs {
        padding: 30px;
    }
    
    .pencil-case-cta {
        padding: 40px 25px;
    }
}

@media (max-width: 768px) {
    .pencil-case-intro {
        padding: 20px 0;
    }
    
    .pencil-case-banner {
        margin-bottom: 30px;
    }
    
    .pencil-case-section {
        margin-bottom: 40px;
        padding: 0 10px;
    }
    
    .pencil-case-title {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    .pencil-case-grid {
        gap: 20px;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
    
    .pencil-case-feature {
        padding: 25px;
    }
    
    .pencil-case-material {
        gap: 25px;
    }
    
    .pencil-case-material-content h3 {
        font-size: 20px;
    }
    
    .pencil-case-specs {
        padding: 25px 15px;
    }
    
    .pencil-case-specs-table td {
        padding: 14px 15px;
        font-size: 15px;
    }
    
    .pencil-case-scenarios {
        gap: 15px;
    }
    
    .pencil-case-cta {
        padding: 35px 20px;
        margin: 40px 10px 20px;
    }
    
    .pencil-case-cta-title {
        font-size: 22px;
    }
    
    .pencil-case-cta-desc {
        font-size: 16px;
    }
    
    .pencil-case-cta-btn {
        padding: 14px 35px;
        font-size: 16px;
    }
    
    .language-header {
        padding: 12px 20px;
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .pencil-case-grid {
        grid-template-columns: 1fr;
    }
    
    .pencil-case-feature {
        padding: 22px;
    }
    
    .pencil-case-feature-icon {
        font-size: 38px;
    }
    
    .pencil-case-material-img {
        min-width: 100%;
    }
    
    .pencil-case-material-content {
        min-width: 100%;
    }
    
    .pencil-case-specs-table td:first-child {
        width: 40%;
    }
    
    .pencil-case-scenarios {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }
    
    .pencil-case-cta-title {
        font-size: 20px;
    }
    
    .pencil-case-cta-btn {
        padding: 12px 30px;
        font-size: 15px;
        width: 100%;
    }
}

@media (max-width: 360px) {
    .pencil-case-section {
        padding: 0 5px;
    }
    
    .pencil-case-specs-table td {
        padding: 12px 10px;
        font-size: 14px;
    }
    
    .pencil-case-scenario {
        padding: 20px 15px;
    }
    
    .pencil-case-cta {
        padding: 30px 15px;
    }
}
</style>