/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.navbar-left {
    display: flex;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
    border-radius: 8px;
}

.logo-tagline {
    color: white;
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    opacity: 0.95;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
    font-weight: 500;
    font-size: 0.9rem;
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    opacity: 0.8;
    text-decoration: underline;
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.3;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.btn-primary {
    display: inline-block;
    background: white;
    color: #667eea;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 章节标题 */
.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #333;
}

/* 优势对比 */
.advantages {
    padding: 4rem 0;
    background: white;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.comparison-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.comparison-card .icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.comparison-card h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #667eea;
}

.compare-item {
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 8px;
}

.compare-item.highlight {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    border-left: 4px solid #667eea;
}

.label-old {
    display: inline-block;
    background: #dc3545;
    color: white;
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.label-new {
    display: inline-block;
    background: #28a745;
    color: white;
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

/* 特色功能 */
.features {
    padding: 4rem 0;
    background: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: #667eea;
    margin-bottom: 1rem;
}

/* 产品详情 */
.products {
    padding: 4rem 0;
    background: white;
}

.products .container {
    display: flex;
    flex-direction: column;
}

.product-detail {
    margin-bottom: 4rem;
    background: #ffffff;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 2px solid #d0d0d0;
}

.product-detail:nth-child(even) {
    background: #f8f9fa;
}

.product-detail:nth-child(odd) {
    background: #ffffff;
}

/* 产品顺序控制 */
.product-detail:nth-child(1) { order: 1; }  /* M0201 洗洁精 70% */
.product-detail:nth-child(2) { order: 7; }  /* M1601 第三类洗洁精 40% */
.product-detail:nth-child(3) { order: 2; }  /* M0301 洗衣液 70% */
.product-detail:nth-child(4) { order: 8; }  /* M1701 第三类洗衣液 40% */
.product-detail:nth-child(5) { order: 10; } /* M0305 高泡洗衣液 70% */
.product-detail:nth-child(6) { order: 9; }  /* M0306 去顽渍洗衣液 70% */
.product-detail:nth-child(7) { order: 3; }  /* M0101 洗车液 63% */
.product-detail:nth-child(8) { order: 4; }  /* M0501 洗手液 63% */
.product-detail:nth-child(9) { order: 6; }  /* M0801 洗发水 63% */
.product-detail:nth-child(10) { order: 5; } /* M0601 沐浴露 63% */

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.product-tag {
    background: #ff6b6b;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.product-info {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
}

/* 新的产品特点布局 */
.product-features-section {
    margin: 2rem 0;
}

.features-grid-layout {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 2rem;
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid #e8e8e8;
    align-items: center;
}

.feature-column h3,
.specs-column h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* 产品图片列 */
.product-image-column {
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image-wrapper {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    max-width: 350px;
}

.product-barrel-img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

/* 规格列表样式 */
.specs-list {
    background: white;
    padding: 1.2rem;
    border-radius: 10px;
    border: 1px solid #e0e0e0;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.spec-item:last-of-type {
    border-bottom: none;
}

.spec-label {
    font-weight: 600;
    color: #555;
    font-size: 0.95rem;
}

.spec-value {
    font-weight: 700;
    color: #667eea;
    font-size: 1.05rem;
}

.spec-note {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 0.6rem 0.8rem;
    margin: 0.8rem 0;
    font-size: 0.85rem;
    color: #856404;
    border-radius: 4px;
}

.feature-column ul {
    list-style: none;
    margin: 0;
}

.feature-column li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.feature-column li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.specs-column .specs {
    background: #ffffff;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.specs-column .specs p {
    margin: 0.8rem 0;
    font-size: 1rem;
}

/* 稀释比例参考表样式 */
.dilution-ratio-section {
    margin-top: 2rem;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 10px;
    border: 1px solid #e8e8e8;
}

.dilution-ratio-section h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.ratio-description {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1.5rem;
}

.scroll-hint {
    display: none;
    background: #667eea;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    text-align: center;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.ratio-notes {
    font-size: 0.85rem;
    color: #999;
    margin-top: 1.5rem;
    font-style: italic;
}

.contact-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid #667eea;
    transition: all 0.3s ease;
}

.contact-link:hover {
    color: #764ba2;
    border-bottom-color: #764ba2;
    background: rgba(102, 126, 234, 0.1);
    padding: 0 4px;
}

/* 计算示例样式 */
.calculation-example {
    margin-top: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
    border-radius: 10px;
    border: 2px solid #667eea;
}

.calculation-example h4 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.example-intro {
    color: #555;
    margin-bottom: 1rem;
    font-weight: 500;
}

.ingredient-calculations {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.calc-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0;
    border-bottom: 1px dashed #e0e0e0;
}

.calc-item:last-child {
    border-bottom: none;
}

.calc-ingredient {
    color: #555;
    font-weight: 500;
}

.calc-formula {
    color: #666;
    font-family: 'Courier New', monospace;
}

.calc-formula strong {
    color: #667eea;
    font-size: 1.1rem;
}

.total-line {
    background: #667eea;
    color: white;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-size: 1.05rem;
}

.total-result {
    color: #ffd700;
    font-size: 1.2rem;
}

.product-desc ul {
    list-style: none;
    margin: 1rem 0;
}

.product-desc li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.product-desc li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.specs {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.formula-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.formula-table th,
.formula-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

.formula-table th {
    background: #667eea;
    color: white;
    text-align: center;
}

.formula-table td {
    text-align: center;
}

.formula-table tr:hover {
    background: #f8f9fa;
}

.formula-table tbody tr:first-child td:first-child,
.formula-table tbody tr:nth-child(2) td:first-child,
.formula-table tbody tr:nth-child(3) td:first-child,
.formula-table tbody tr:nth-child(4) td:first-child,
.formula-table tbody tr:nth-child(5) td:first-child {
    text-align: left;
    font-weight: 500;
}

/* 生产步骤 */
.production-steps {
    margin-top: 3rem;
    padding: 2rem;
    background: white;
    border-radius: 15px;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.step-card {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

/* 辅料专区 */
.auxiliary {
    padding: 4rem 0;
    background: white;
}

.auxiliary-category {
    margin-bottom: 4rem;
}

.category-desc {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
}

/* 香精实物展示区 */
.fragrance-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    background: #f8f9fa;
    padding: 3rem;
    border-radius: 15px;
    margin-bottom: 3rem;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.showcase-image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.showcase-text h3 {
    color: #667eea;
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.showcase-text p {
    color: #555;
    line-height: 1.8;
    font-size: 1.05rem;
}

/* 色素展示区 */
.colorant-intro {
    text-align: center;
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
}

.colorant-intro h3 {
    color: #667eea;
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.colorant-intro p {
    color: #555;
    line-height: 1.8;
    font-size: 1.05rem;
    max-width: 900px;
    margin: 0.5rem auto;
}

.colorant-intro em {
    color: #888;
    font-size: 0.95rem;
}

/* 功能辅料介绍区 */
.functional-intro {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    border-left: 4px solid #667eea;
}

.functional-intro h3 {
    color: #667eea;
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.functional-intro p {
    color: #555;
    line-height: 1.8;
    font-size: 1.05rem;
    margin-bottom: 1rem;
}

.functional-intro strong {
    color: #667eea;
}

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

.colorant-image-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.colorant-image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.colorant-image-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.colorant-features {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 15px;
}

.colorant-features h3 {
    color: #667eea;
    text-align: center;
    font-size: 1.6rem;
    margin-bottom: 2rem;
}

.features-grid-colorant {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-item {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}

.feature-icon-small {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.feature-item h4 {
    color: #667eea;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.feature-item p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

.auxiliary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* 功能辅料网格 - 固定4列 */
.functional-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.auxiliary-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.auxiliary-card:hover {
    transform: translateY(-5px);
}

.auxiliary-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.auxiliary-card h3 {
    color: #667eea;
    text-align: center;
    margin-bottom: 0.5rem;
}

.auxiliary-card > p {
    text-align: center;
    color: #666;
    margin-bottom: 1rem;
}

.specs-list {
    list-style: none;
    margin-top: 1rem;
}

.specs-list li {
    padding: 0.3rem 0;
    font-size: 0.9rem;
    color: #555;
}

.color-sample {
    width: 100%;
    height: 80px;
    border-radius: 10px;
    margin-bottom: 1rem;
}

/* 使用说明 */
.usage-tips {
    margin-top: 3rem;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.tip-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #667eea;
}

/* 设备页面 */
.equipment {
    padding: 4rem 0;
    background: white;
}

.intro-box {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
    margin-bottom: 3rem;
}

.equipment-category {
    margin-bottom: 4rem;
}

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.equipment-card {
    background: #f8f9fa;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    position: relative;
}

.equipment-card:hover {
    transform: translateY(-5px);
}

.equipment-card.featured {
    border: 3px solid #667eea;
}

.badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #ff6b6b;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    z-index: 10;
}

.equipment-image {
    background: white;
    padding: 1.5rem;
    text-align: center;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.equipment-photo {
    width: 100%;
    height: 280px;
    object-fit: contain;
    display: block;
    border-radius: 8px;
}

.placeholder-img {
    font-size: 5rem;
    color: white;
}

.equipment-card h3 {
    padding: 1.5rem 1.5rem 1rem;
    color: #667eea;
}

.equipment-specs {
    padding: 0 1.5rem;
    margin-bottom: 1rem;
}

.equipment-specs p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.features-list {
    list-style: none;
    padding: 0 1.5rem 1.5rem;
}

.features-list li {
    padding: 0.3rem 0;
    font-size: 0.9rem;
    color: #555;
}

.equipment-note {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    border-radius: 5px;
}

.equipment-note p {
    margin: 0;
    color: #856404;
    font-size: 0.9rem;
}

/* 灌装设备左右布局 */
.filling-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
    align-items: start;
}

.filling-image {
    position: sticky;
    top: 100px;
}

.filling-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.filling-content h3 {
    color: #667eea;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.filling-specs {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 0.8rem 0;
    border-bottom: 1px solid #e0e0e0;
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    font-weight: 600;
    color: #555;
}

.spec-value {
    color: #667eea;
    font-weight: 500;
    text-align: right;
}

.filling-features {
    margin-bottom: 2rem;
}

.filling-features h4 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.filling-features ul {
    list-style: none;
    padding: 0;
}

.filling-features li {
    padding: 0.5rem 0;
    color: #555;
}

.filling-note {
    background: #e3f2fd;
    border-left: 4px solid #667eea;
    padding: 1rem;
    border-radius: 5px;
}

.filling-note p {
    margin: 0;
    color: #1565c0;
    font-size: 0.95rem;
}

/* 喷码机上下布局 */
.printer-showcase {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.08);
    margin-bottom: 3rem;
}

.printer-image {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 3rem;
}

.printer-image img {
    width: 100%;
    max-width: 700px;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.2);
}

.printer-content {
    max-width: 1000px;
    margin: 0 auto;
}

.printer-content h3 {
    color: #667eea;
    font-size: 2rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.printer-intro {
    color: #555;
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: 10px;
    border-left: 4px solid #667eea;
    line-height: 1.6;
}

.printer-features {
    margin-bottom: 2.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-block {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.2rem;
    border-left: 5px solid #667eea;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-block:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.15);
}

.feature-block h4 {
    color: #667eea;
    margin-bottom: 0.8rem;
    font-size: 1.15rem;
    font-weight: 600;
}

.feature-block p {
    color: #555;
    line-height: 1.7;
    margin: 0;
    font-size: 0.95rem;
}

.printer-specs {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 2rem;
    border-radius: 15px;
    color: white;
}

.printer-specs h4 {
    color: white;
    margin-bottom: 1.2rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.printer-specs ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.printer-specs li {
    padding: 0.7rem 0;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.7;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.printer-specs li:last-child {
    border-bottom: none;
}

.printer-specs strong {
    color: #ffd700;
    font-weight: 600;
}

.equipment-card.small {
    padding: 2rem;
    text-align: center;
}

/* 设备选择说明区域 */
.equipment-note-section {
    max-width: 900px;
    margin: 4rem auto 0;
    padding: 3rem;
    background: linear-gradient(135deg, #fff9e6 0%, #fff 100%);
    border-radius: 20px;
    border: 2px solid #ffc107;
    box-shadow: 0 5px 20px rgba(255, 193, 7, 0.15);
    text-align: center;
}

.note-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.equipment-note-section h3 {
    color: #667eea;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.note-main {
    color: #555;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.2rem;
}

.note-sub {
    color: #666;
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
    font-style: italic;
}

.note-cta {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid #667eea;
    text-align: left;
}

.note-cta p {
    margin: 0.5rem 0;
    color: #555;
    line-height: 1.7;
}

.note-cta strong {
    color: #667eea;
    font-size: 1.1rem;
}

.contact-link-inline {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid #667eea;
    transition: all 0.3s;
}

.contact-link-inline:hover {
    color: #764ba2;
    border-bottom-color: #764ba2;
    background: rgba(102, 126, 234, 0.1);
    padding: 0 4px;
}

.equipment-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.price-tag {
    color: #667eea;
    font-weight: bold;
    margin-top: 0.5rem;
}

/* 套餐方案 */
.packages {
    margin-top: 3rem;
    padding: 3rem 0;
    background: #f8f9fa;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.package-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    position: relative;
}

.package-card.featured {
    border: 3px solid #667eea;
}

.package-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.package-price {
    font-size: 1.2rem;
    margin-top: 0.5rem;
}

.package-content {
    padding: 2rem;
}

.package-content h4 {
    color: #667eea;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.package-content ul {
    list-style: none;
    margin-bottom: 1rem;
}

.package-content li {
    padding: 0.3rem 0;
}

/* 服务保障 */
.service-guarantee {
    margin-top: 3rem;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.service-item {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* 证书页面 */
.certificates {
    padding: 4rem 0;
    background: white;
}

/* 证书展示区域 - 2行2列布局 */
.certificates-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    margin-bottom: 4rem;
    align-items: stretch;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.cert-display-card {
    background: white;
    border-radius: 20px;
    padding: 0;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    border: 1px solid #e8e8e8;
    position: relative;
}

.cert-display-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.cert-display-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.25);
    border-color: #667eea;
}

.cert-display-card:hover::before {
    opacity: 1;
}

.cert-image-large {
    padding: 2rem 2rem 1.5rem;
    text-align: center;
    flex-shrink: 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.cert-image-large img {
    max-width: 100%;
    height: 280px;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
    border: 3px solid white;
    transition: transform 0.4s ease;
}

.cert-display-card:hover .cert-image-large img {
    transform: scale(1.03);
}

.cert-info-text {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    padding: 1.5rem 2rem 2rem;
}

.cert-info-text h3 {
    color: #667eea;
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
    text-align: center;
    min-height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.cert-info-text h4 {
    color: #888;
    font-size: 0.85rem;
    margin-bottom: 1.2rem;
    font-weight: 500;
    text-align: center;
    line-height: 1.5;
    min-height: 2.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cert-classification {
    background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.2rem;
    border-left: 4px solid #667eea;
}

.cert-classification strong {
    color: #667eea;
    font-size: 0.95rem;
    font-weight: 700;
    display: block;
    margin-bottom: 0.3rem;
}

.cert-classification span {
    color: #28a745;
    font-size: 1.05rem;
    font-weight: 600;
}

.cert-info-text > p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 1.2rem;
    font-size: 0.9rem;
    text-align: left;
    flex-grow: 1;
}

.cert-note {
    background: linear-gradient(135deg, #fff9e6 0%, #fff3cd 100%);
    border-left: 4px solid #ffc107;
    padding: 1rem 1.2rem;
    border-radius: 10px;
    margin-top: auto;
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.1);
}

.cert-note p {
    margin: 0;
    color: #856404;
    font-size: 0.8rem;
    line-height: 1.6;
}

.cert-note strong {
    color: #d39e00;
    font-weight: 600;
}

/* HS Code 展示样式 */
.hs-code-display {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3rem 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.hs-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}

.hs-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    letter-spacing: 2px;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
    font-family: 'Courier New', monospace;
}

.hs-category {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* 证书说明区域 */
.cert-explanation {
    max-width: 1000px;
    margin: 4rem auto;
    padding: 3rem;
    background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
    border-radius: 20px;
}

.cert-explanation h2 {
    text-align: center;
    color: #667eea;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.explanation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.explanation-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.exp-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.explanation-card h4 {
    color: #667eea;
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
}

.explanation-card p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.intro-text {
    text-align: center;
    margin-bottom: 3rem;
}

.certificate-section {
    margin-bottom: 4rem;
}

.section-desc {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.certificate-card {
    background: #f8f9fa;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.certificate-image {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3rem;
}

.cert-placeholder {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    text-align: center;
}

.cert-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.certificate-info {
    padding: 2rem;
}

.cert-details {
    list-style: none;
    margin: 1rem 0;
}

.cert-details li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #dee2e6;
}

.cert-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.cert-tag {
    background: #28a745;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* MSDS信息 */
.msds-info {
    margin: 3rem 0;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.info-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
}

.info-card h3 {
    color: #667eea;
    margin-bottom: 1rem;
}

/* 其他资质 */
.other-certs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.cert-item {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #e8e8e8;
}

.cert-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
    border-color: #667eea;
}

.cert-icon-large {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.cert-item h3 {
    color: #333;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.cert-item p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.status-badge {
    display: inline-block;
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    padding: 0.4rem 1.2rem;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-top: 0.5rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

/* 优势区域 */
.advantages-section {
    margin: 3rem 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* 2行3列固定布局 */
.advantages-grid-2x3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.advantage-item {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* 下载区域 */
.download-section {
    text-align: center;
    padding: 3rem;
    background: #f8f9fa;
    border-radius: 15px;
    margin-top: 3rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-download {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    transition: transform 0.3s;
}

.btn-download:hover {
    transform: translateY(-3px);
}

/* 联系页面 */
.contact {
    padding: 4rem 0;
    background: white;
}

.contact-methods {
    margin-bottom: 4rem;
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.method-card {
    background: white;
    padding: 1rem 0.8rem 1.5rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid #f0f0f0;
}

.method-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
    border-color: #667eea;
}

/* 联系人头像 */
.contact-avatar {
    width: calc(100% - 1rem);
    margin: 0 auto 0.8rem;
    display: block;
}

.contact-avatar img {
    width: 100%;
    height: auto;
    display: block;
}

.method-card h3 {
    color: #667eea;
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
    font-weight: 700;
    margin-top: 0;
}

.contact-role {
    color: #888;
    font-size: 0.85rem;
    margin-bottom: 1.2rem;
    font-weight: 500;
}

.contact-details {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 1.2rem;
    text-align: left;
}

.contact-details p {
    margin: 0.4rem 0;
    color: #555;
    font-size: 0.85rem;
    line-height: 1.5;
}

.contact-details strong {
    color: #667eea;
    font-weight: 600;
    display: inline-block;
    min-width: 85px;
    font-size: 0.8rem;
}

/* 真实二维码 */
.qr-code-real {
    background: white;
    padding: 0.8rem;
    border-radius: 10px;
    border: 2px dashed #667eea;
    display: inline-block;
}

.qr-code-real img {
    width: 120px;
    height: 120px;
    display: block;
    border-radius: 5px;
}

.qr-code-real p {
    margin-top: 0.6rem;
    color: #667eea;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 额外联系信息 */
.additional-contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 15px;
}

.info-card {
    text-align: center;
    padding: 1.2rem;
}

.info-icon {
    font-size: 2.2rem;
    margin-bottom: 0.8rem;
}

.info-card h4 {
    color: #667eea;
    margin-bottom: 0.6rem;
    font-size: 1rem;
}

.info-card p {
    color: #555;
    line-height: 1.6;
    margin: 0.3rem 0;
    font-size: 0.9rem;
}

.info-card small {
    color: #888;
    font-size: 0.8rem;
}

.method-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.method-value {
    text-align: center;
    font-weight: bold;
    color: #333;
    margin-bottom: 0.5rem;
}

.method-desc {
    text-align: center;
    color: #666;
    margin-bottom: 1rem;
}

.qr-placeholder {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.qr-code {
    width: 150px;
    height: 150px;
    background: white;
    border: 2px dashed #667eea;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.qr-code p:first-child {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.contact-tips,
.address-features {
    margin-top: 1rem;
}

.contact-tips p,
.address-features p {
    padding: 0.3rem 0;
    color: #555;
}

/* 联系表单 */
.contact-form-section {
    background: #f8f9fa;
    padding: 3rem;
    border-radius: 15px;
    margin-bottom: 4rem;
}

.form-desc {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
}

.contact-form {
    max-width: 800px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s;
}

.btn-submit:hover {
    transform: translateY(-3px);
}

/* 服务优势 */
.service-advantages {
    margin-bottom: 4rem;
}

.adv-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.advantage-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s;
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.advantage-card h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

/* FAQ */
.faq-section {
    margin-bottom: 4rem;
}

.faq-list {
    max-width: 900px;
    margin: 2rem auto 0;
}

/* FAQ 2行3列布局 */
.faq-grid-2x3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.faq-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    border-left: 4px solid #667eea;
}

.faq-item h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

/* 合作流程 */
.cooperation-process {
    background: #f8f9fa;
    padding: 3rem;
    border-radius: 15px;
    margin-bottom: 4rem;
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.process-step {
    text-align: center;
    flex: 0 0 150px;
}

.step-num {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.process-arrow {
    font-size: 2rem;
    color: #667eea;
}

/* CTA区域 */
.cta-section {
    text-align: center;
    padding: 3rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
}

.cta-section h2 {
    margin-bottom: 1rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-cta {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s;
}

.btn-cta.primary {
    background: white;
    color: #667eea;
}

.btn-cta.secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-cta:hover {
    transform: translateY(-3px);
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: #667eea;
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: #bbb;
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-section p {
    color: #bbb;
    margin: 0.5rem 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #bbb;
}

/* 汉堡菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* 平板端响应式 (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .functional-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .logo-tagline {
        display: none;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - 60px);
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        flex-direction: column;
        gap: 0;
        padding: 2rem 0;
        transition: left 0.3s ease;
        box-shadow: 2px 0 10px rgba(0,0,0,0.3);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        display: block;
        padding: 1rem 2rem;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .hero h1 {
        font-size: 1.5rem;
        padding: 0 1rem;
    }
    
    .hero p {
        font-size: 0.9rem;
        padding: 0 1rem;
    }
    
    .comparison-grid,
    .features-grid,
    .auxiliary-grid,
    .functional-grid,
    .equipment-grid,
    .certificates-grid,
    .certificates-showcase,
    .other-certs-grid,
    .advantages-grid-2x3,
    .faq-grid-2x3 {
        grid-template-columns: 1fr;
    }
    
    /* 香精推荐区在平板上显示2列 */
    .auxiliary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 香精展示区移动端优化 */
    .fragrance-showcase {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .showcase-text h3 {
        font-size: 1.3rem;
    }
    
    .showcase-text p {
        font-size: 0.95rem;
    }
    
    /* 色素展示区移动端优化 */
    .colorant-intro {
        padding: 1.5rem;
    }
    
    .colorant-intro h3 {
        font-size: 1.2rem;
    }
    
    .colorant-intro p {
        font-size: 0.95rem;
    }
    
    /* 功能辅料介绍区移动端优化 */
    .functional-intro {
        padding: 1.5rem;
    }
    
    .functional-intro h3 {
        font-size: 1.2rem;
    }
    
    .functional-intro p {
        font-size: 0.95rem;
    }
    
    .colorant-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .colorant-image-card img {
        height: 180px;
    }
    
    .colorant-features {
        padding: 1.5rem;
    }
    
    .colorant-features h3 {
        font-size: 1.2rem;
    }
    
    .features-grid-colorant {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    /* 灌装设备移动端优化 */
    .filling-showcase {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .filling-image {
        position: static;
    }
    
    .filling-content h3 {
        font-size: 1.3rem;
    }
    
    .spec-row {
        flex-direction: column;
        gap: 0.3rem;
    }
    
    .spec-value {
        text-align: left;
    }
    
    /* 喷码机移动端优化 */
    .printer-showcase {
        padding: 1.5rem;
    }
    
    .printer-image {
        margin-bottom: 2rem;
    }
    
    .printer-image img {
        max-width: 100%;
    }
    
    .printer-intro {
        font-size: 0.95rem;
        padding: 1rem;
    }
    
    .printer-features {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-block {
        padding: 1rem;
    }
    
    .feature-block h4 {
        font-size: 1rem;
    }
    
    .printer-specs {
        padding: 1.5rem;
    }
    
    /* 设备选择说明移动端优化 */
    .equipment-note-section {
        padding: 2rem 1.5rem;
        margin: 3rem 1rem 0;
    }
    
    .note-icon {
        font-size: 2.5rem;
    }
    
    .equipment-note-section h3 {
        font-size: 1.3rem;
    }
    
    .note-main {
        font-size: 1rem;
    }
    
    .note-sub {
        font-size: 0.95rem;
    }
    
    .note-cta {
        padding: 1.2rem;
    }
    
    .note-cta strong {
        font-size: 1rem;
    }
    
    /* 证书页面移动端优化 */
    .cert-display-card {
        padding: 1.5rem;
    }
    
    .cert-info-text h3 {
        font-size: 1.3rem;
    }
    
    .cert-info-text h4 {
        font-size: 1rem;
    }
    
    .cert-explanation {
        padding: 2rem 1.5rem;
    }
    
    .cert-explanation h2 {
        font-size: 1.5rem;
    }
    
    .explanation-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .product-info {
        grid-template-columns: 1fr;
    }
    
    .features-grid-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* 移动端表格优化 */
    .dilution-ratio-section {
        padding: 1rem;
    }
    
    .dilution-ratio-section h3 {
        font-size: 1.1rem;
    }
    
    .scroll-hint {
        display: block;
    }
    
    .formula-table table {
        font-size: 0.75rem;
    }
    
    .formula-table th,
    .formula-table td {
        padding: 0.5rem 0.3rem;
        white-space: normal;
        word-break: break-word;
    }
    
    .formula-table th {
        font-size: 0.7rem;
        line-height: 1.2;
    }
    
    /* 计算示例移动端优化 */
    .calculation-example {
        padding: 1rem;
    }
    
    .calculation-example h4 {
        font-size: 0.95rem;
    }
    
    .calc-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.3rem;
    }
    
    .calc-formula {
        font-size: 0.85rem;
    }
    
    .total-line {
        font-size: 0.9rem;
        padding: 0.8rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}

/* About Us Page Styles */
.about-us {
    padding: 4rem 0;
    background: white;
}

/* Brand Logo Showcase */
.brand-showcase {
    text-align: center;
    padding: 3rem 0 2.5rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 15px;
}

.brand-logo-large {
    max-width: 400px;
    height: auto;
    display: inline-block;
    filter: drop-shadow(0 8px 20px rgba(0,0,0,0.12));
    transition: transform 0.3s;
    background: white;
    padding: 2rem;
    border-radius: 12px;
}

.brand-logo-large:hover {
    transform: scale(1.02);
}

/* Dual Brand Layout */
.dual-brand-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.brand-section {
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.brand-section.domestic {
    background: linear-gradient(135deg, #fff5f5 0%, #ffe8e8 100%);
    border: 2px solid #ff6b6b;
}

.brand-section.international {
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f0ff 100%);
    border: 2px solid #667eea;
}

.brand-section h3 {
    color: #333;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.brand-section p {
    color: #555;
    line-height: 1.7;
    font-size: 0.95rem;
    margin: 0;
}

.brand-section strong {
    color: #667eea;
    font-weight: 600;
}

/* Partnership Benefits */
.partnership-benefits {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.benefit-item {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid #667eea;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.benefit-item h4 {
    color: #667eea;
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.benefit-item p {
    color: #555;
    line-height: 1.7;
    font-size: 0.95rem;
    margin: 0;
}

.about-section {
    margin-bottom: 5rem;
    padding: 3rem;
    background: #f8f9fa;
    border-radius: 20px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.about-section.highlight-section {
    background: linear-gradient(135deg, #f0f4ff 0%, #faf5ff 100%);
    border: 2px solid #667eea;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    gap: 1rem;
}

.header-icon {
    font-size: 3rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.section-header h2 {
    color: #667eea;
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-content p {
    color: #555;
    line-height: 1.8;
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.about-content strong {
    color: #667eea;
    font-weight: 600;
}

/* Image Content Layout */
.about-section.with-image {
    background: white;
    padding: 3rem;
}

.image-content-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-section.reverse .image-content-layout {
    direction: rtl;
}

.about-section.reverse .image-content-layout > * {
    direction: ltr;
}

.about-image {
    position: sticky;
    top: 100px;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    border: 3px solid #f0f0f0;
}

.image-caption {
    text-align: center;
    color: #888;
    font-size: 0.9rem;
    margin-top: 1rem;
    font-style: italic;
}

.about-text {
    padding: 1rem 0;
}

.about-text p {
    color: #555;
    line-height: 1.8;
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.facility-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.facility-list li {
    padding: 0.8rem 0;
    color: #555;
    font-size: 1rem;
    line-height: 1.6;
    border-bottom: 1px solid #e8e8e8;
}

.facility-list li:last-child {
    border-bottom: none;
}

.facility-list strong {
    color: #667eea;
    font-weight: 600;
}

.highlight-text {
    background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
    padding: 1.2rem 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #667eea;
    color: #1565c0;
    font-weight: 500;
    margin-top: 1.5rem;
}

/* Product Categories Tags */
.product-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
    justify-content: center;
}

.category-tag {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    box-shadow: 0 3px 10px rgba(102, 126, 234, 0.3);
    transition: transform 0.3s;
}

.category-tag:hover {
    transform: translateY(-3px);
}

/* Global Advantages Grid */
.global-advantages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* TOIN Advantages Grid - 4 columns */
.toin-advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.advantage-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.advantage-item:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.advantage-item h4 {
    color: #667eea;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.advantage-item p {
    color: #555;
    line-height: 1.7;
    font-size: 0.95rem;
}

.advantage-item strong {
    color: #28a745;
    font-weight: 600;
}

/* Solutions Grid */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2.5rem 0;
}

.solution-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.solution-card:hover {
    transform: translateY(-5px);
    border-color: #667eea;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
}

.solution-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.solution-card h4 {
    color: #667eea;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.solution-card p {
    color: #666;
    line-height: 1.7;
    font-size: 0.95rem;
    margin: 0;
}

.cta-text {
    text-align: center;
    font-size: 1.15rem;
    color: #667eea;
    font-weight: 600;
    margin-top: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

/* Values Grid */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin: 2rem 0;
}

.value-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.value-card:hover {
    transform: translateY(-5px);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.value-card h4 {
    color: #667eea;
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.value-card p {
    color: #666;
    line-height: 1.7;
    font-size: 0.95rem;
    margin: 0;
}

.mission-statement {
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
}

.mission-statement p {
    color: white;
    font-size: 1.15rem;
    line-height: 1.8;
    margin: 0;
}

.mission-statement strong {
    color: #ffd700;
    font-weight: 700;
}

/* Call to Action Section */
.about-cta {
    text-align: center;
    padding: 4rem 3rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
    margin-top: 3rem;
}

.about-cta h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.about-cta p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.2rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.about-cta .btn-primary {
    background: white;
    color: #667eea;
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
    border-radius: 50px;
    text-decoration: none;
    display: inline-block;
    font-weight: 700;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.about-cta .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

/* Responsive Design for About Page */
@media (max-width: 768px) {
    .about-section {
        padding: 2rem 1.5rem;
        margin-bottom: 3rem;
    }
    
    .section-header {
        flex-direction: column;
        text-align: center;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .image-content-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-section.reverse .image-content-layout {
        direction: ltr;
    }
    
    .about-image {
        position: static;
    }
    
    .dual-brand-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .global-advantages,
    .toin-advantages-grid,
    .solutions-grid,
    .values-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .product-categories {
        justify-content: center;
    }
    
    .about-cta {
        padding: 3rem 2rem;
    }
    
    .about-cta h2 {
        font-size: 1.8rem;
    }
    
    .about-cta p {
        font-size: 1rem;
    }
}


/* ==================== 包材页面样式 ==================== */
.packaging {
    padding: 4rem 0;
    background: white;
}

.packaging-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.packaging-card {
    background: #f8f9fa;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.packaging-card:hover {
    transform: translateY(-5px);
}

.packaging-image {
    background: white;
    padding: 1.5rem;
    text-align: center;
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.packaging-image img {
    width: 100%;
    max-width: 280px;
    height: 250px;
    object-fit: contain;
    display: block;
    border-radius: 8px;
}

.packaging-card h3 {
    padding: 1.5rem 1.5rem 1rem;
    color: #667eea;
    font-size: 1.3rem;
}

.packaging-specs {
    padding: 0 1.5rem;
    margin-bottom: 1rem;
}

.packaging-specs p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
    color: #555;
}

.packaging-note {
    margin: 1rem 1.5rem 1.5rem;
    padding: 1rem;
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    border-radius: 5px;
}

.packaging-note p {
    margin: 0;
    color: #856404;
    font-size: 0.85rem;
}

/* 包材展示区 - 左右布局 */
.packaging-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    align-items: start;
    margin-bottom: 2rem;
}

.packaging-image-large {
    position: sticky;
    top: 100px;
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

.packaging-image-large img {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    border-radius: 10px;
}

.packaging-content h3 {
    color: #667eea;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.packaging-specs-detailed {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    border: 1px solid #e0e0e0;
}

.packaging-features h4 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.packaging-features ul {
    list-style: none;
    padding: 0;
}

.packaging-features li {
    padding: 0.5rem 0;
    color: #555;
    padding-left: 1.5rem;
    position: relative;
}

.packaging-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.packaging-note-box {
    background: #e3f2fd;
    border-left: 4px solid #667eea;
    padding: 1.2rem;
    border-radius: 8px;
    margin-top: 1.5rem;
}

.packaging-note-box p {
    margin: 0;
    color: #1565c0;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 桶型展示区 */
.barrel-types {
    margin-top: 1.5rem;
}

.barrel-type-section {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid #e0e0e0;
}

.barrel-type-section h4 {
    color: #667eea;
    margin-bottom: 1.2rem;
    font-size: 1.3rem;
    padding-bottom: 0.8rem;
    border-bottom: 2px solid #667eea;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .packaging-showcase {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .packaging-image-large {
        position: static;
    }
    
    .packaging-grid {
        grid-template-columns: 1fr;
    }
}


/* 运输桶布局 - 图片在上，两个介绍左右排列 */
.transport-image-top {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    text-align: center;
}

.transport-image-top img {
    width: 100%;
    max-width: 800px;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    border-radius: 10px;
}

.transport-barrels-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.transport-barrel-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    border: 1px solid #e0e0e0;
}

.transport-barrel-card h4 {
    color: #667eea;
    margin-bottom: 1.2rem;
    font-size: 1.3rem;
    padding-bottom: 0.8rem;
    border-bottom: 2px solid #667eea;
}

.transport-barrel-card .packaging-specs-detailed {
    margin-bottom: 1.5rem;
}

.transport-barrel-card .features-list {
    list-style: none;
    padding: 0;
}

.transport-barrel-card .features-list li {
    padding: 0.4rem 0;
    color: #555;
    font-size: 0.9rem;
}

/* 响应式 - 移动端改为上下排列 */
@media (max-width: 968px) {
    .transport-barrels-grid {
        grid-template-columns: 1fr;
    }
}


/* ==================== 视频教程页面样式 ==================== */
.tutorials {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.video-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
    border: 1px solid #e8e8e8;
    position: relative;
    display: flex;
    flex-direction: column;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.15);
    border-color: #667eea;
}

.video-card.featured {
    border: 2px solid #667eea;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
}

.video-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 10;
    box-shadow: 0 3px 12px rgba(102, 126, 234, 0.4);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 宽高比 */
    height: 0;
    overflow: hidden;
    background: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* 视频缩略图样式 */
.video-thumbnail-link {
    display: block;
    text-decoration: none;
    flex-shrink: 0;
}

.video-thumbnail {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 宽高比 */
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    cursor: pointer;
}

.video-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.4s ease;
}

.video-thumbnail:hover img {
    transform: scale(1.08);
    filter: brightness(0.85);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: rgba(255, 0, 0, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-left: 4px;
    font-size: 1.8rem;
    color: white;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(255, 0, 0, 0.4);
    z-index: 2;
}

.video-thumbnail:hover .play-button {
    background: rgba(255, 0, 0, 1);
    transform: translate(-50%, -50%) scale(1.15);
    box-shadow: 0 6px 30px rgba(255, 0, 0, 0.6);
}
    box-shadow: 0 6px 30px rgba(255, 0, 0, 0.5);
}

.video-info {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.video-info h3 {
    color: #333;
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
    line-height: 1.4;
    font-weight: 600;
    transition: color 0.3s;
}

.video-card:hover .video-info h3 {
    color: #667eea;
}

.video-desc {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    flex-grow: 1;
}

.video-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    background: linear-gradient(135deg, #f0f4ff 0%, #f8f0ff 100%);
    color: #667eea;
    padding: 0.35rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(102, 126, 234, 0.2);
    transition: all 0.3s;
}

.tag:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

/* 教程说明区域 */
.tutorial-note-section {
    max-width: 900px;
    margin: 4rem auto 0;
    padding: 2.5rem;
    background: white;
    border-radius: 20px;
    border: 2px solid #e8e8e8;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.06);
    text-align: center;
}

.tutorial-note-section h3 {
    color: #667eea;
    font-size: 1.6rem;
    margin-bottom: 1rem;
    font-weight: 600;
}
    color: #667eea;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .videos-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .video-badge {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }
    
    .video-info h3 {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .video-info {
        padding: 1.2rem;
    }
    
    .video-tags {
        gap: 0.4rem;
    }
    
    .tag {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    
    /* 手机上香精推荐显示1列 */
    .auxiliary-grid {
        grid-template-columns: 1fr;
    }
}


/* YouTube观看按钮 */
.watch-on-youtube {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.5rem;
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 3px 12px rgba(255, 0, 0, 0.3);
    margin-top: auto;
}

.watch-on-youtube:hover {
    background: linear-gradient(135deg, #CC0000 0%, #990000 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 18px rgba(255, 0, 0, 0.45);
}