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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --accent-red: #ef4444;
    --text-color: #0f172a;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 25px 50px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warning: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

.navbar {
    padding: 20px 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-img {
    width: 50px;
    height: 50px;
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: rotate(5deg) scale(1.05);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: 28px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-subtitle {
    font-size: 12px;
    color: var(--text-light);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    padding-bottom: 5px;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
    border-radius: 2px;
}

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

.nav-menu a:hover::after {
    width: 100%;
}

.nav-buttons {
    display: flex;
    gap: 15px;
}

/* 按钮样式 */
.btn {
    padding: 12px 28px;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
    display: inline-block;
    text-align: center;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    position: relative;
    z-index: 1;
}

.btn-outline::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--gradient-primary);
    transition: width 0.4s ease;
    z-index: -1;
    border-radius: 12px;
}

.btn-outline:hover {
    color: white;
    border-color: transparent;
}

.btn-outline:hover::after {
    width: 100%;
}

.btn-large {
    padding: 18px 45px;
    font-size: 17px;
    border-radius: 14px;
}

/* 英雄区域 */
.hero {
    background: var(--gradient-primary);
    color: white;
    padding: 120px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
    animation: heroAnimation 20s ease infinite;
}

@keyframes heroAnimation {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero-content {
    max-width: 850px;
    margin: 0 auto 60px;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 56px;
    margin-bottom: 25px;
    font-weight: 800;
    letter-spacing: -1px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 26px;
    margin-bottom: 20px;
    opacity: 0.95;
    font-weight: 500;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
    font-size: 19px;
    margin-bottom: 45px;
    opacity: 0.9;
    font-weight: 400;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 25px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.stat-item {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 30px 20px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px);
}

.stat-item h3 {
    font-size: 42px;
    margin-bottom: 10px;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.stat-item p {
    font-size: 16px;
    opacity: 0.95;
    font-weight: 500;
}

/* 区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 70px;
    position: relative;
}

.section-title {
    font-size: 42px;
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 800;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

.section-subtitle {
    font-size: 19px;
    color: var(--text-light);
    font-weight: 500;
    margin-top: 25px;
}

/* 服务项目 */
.services {
    padding: 100px 0;
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 45px 35px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    border: 2px solid transparent;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

.service-card.featured {
    border: 2px solid var(--primary-color);
    background: linear-gradient(to bottom, rgba(102, 126, 234, 0.05) 0%, white 100%);
}

.badge {
    position: absolute;
    top: 25px;
    right: 25px;
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    color: white;
    padding: 8px 18px;
    border-radius: 25px;
    font-size: 13px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(250, 112, 154, 0.4);
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.service-icon {
    font-size: 56px;
    margin-bottom: 25px;
    display: inline-block;
    transition: transform 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    font-size: 26px;
    margin-bottom: 18px;
    color: var(--text-color);
    font-weight: 700;
    letter-spacing: -0.3px;
}

.service-card > p {
    color: var(--text-light);
    margin-bottom: 25px;
    line-height: 1.8;
}

.service-features {
    list-style: none;
    margin-bottom: 30px;
}

.service-features li {
    padding: 8px 0;
    color: var(--text-color);
}

.btn-card {
    width: 100%;
    padding: 15px;
    font-size: 15px;
}

/* 商城模块 */
.products {
    padding: 100px 0;
    background: white;
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 14px 35px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 30px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.tab-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.35);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 24px;
    padding: 40px 35px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    border: 2px solid transparent;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s;
}

.product-card:hover::before {
    left: 100%;
}

.product-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

.product-card.popular {
    border: 3px solid var(--primary-color);
    background: linear-gradient(to bottom, rgba(102, 126, 234, 0.05) 0%, white 50%);
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.25);
}

.product-tag {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--primary-color);
    border-radius: 25px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 25px;
    border: 1px solid rgba(102, 126, 234, 0.2);
    letter-spacing: 0.5px;
}

.product-tag.hot {
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.popular-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 10px 25px;
    border-radius: 25px;
    font-size: 15px;
    font-weight: 800;
    box-shadow: 0 8px 25px rgba(245, 87, 108, 0.4);
    animation: bounce 2s ease infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.product-header {
    margin-bottom: 25px;
}

.product-title {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 700;
    letter-spacing: -0.3px;
}

.product-price {
    display: flex;
    align-items: baseline;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-currency {
    font-size: 24px;
    font-weight: 700;
}

.price-amount {
    font-size: 48px;
    font-weight: 800;
    margin: 0 8px;
    letter-spacing: -1px;
}

.price-unit {
    font-size: 18px;
    color: var(--text-light);
    font-weight: 600;
}

.product-features {
    list-style: none;
    margin-bottom: 25px;
}

.product-features li {
    padding: 12px 0;
    color: var(--text-color);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    font-weight: 500;
    transition: all 0.3s ease;
}

.product-features li:hover {
    padding-left: 10px;
    color: var(--primary-color);
}

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

.btn-product {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    border-radius: 14px;
    font-weight: 700;
}

/* 特色优势 */
.features {
    padding: 100px 0;
    background: linear-gradient(to bottom, #ffffff 0%, #f8fafc 100%);
}

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

.feature-item {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-item:hover::before {
    transform: scaleX(1);
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.12);
    border-color: rgba(102, 126, 234, 0.2);
}

.feature-icon {
    font-size: 64px;
    margin-bottom: 25px;
    display: inline-block;
    transition: transform 0.3s ease;
}

.feature-item:hover .feature-icon {
    transform: scale(1.15) rotate(5deg);
}

.feature-item h3 {
    font-size: 24px;
    margin-bottom: 18px;
    color: var(--text-color);
    font-weight: 700;
    letter-spacing: -0.3px;
}

.feature-item p {
    color: var(--text-light);
    line-height: 1.9;
    font-weight: 500;
}

/* 使用流程 */
.process {
    padding: 100px 0;
    background: white;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.step-item {
    text-align: center;
    flex: 1;
}

.step-number {
    width: 90px;
    height: 90px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 800;
    margin: 0 auto 25px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.35);
    transition: all 0.3s ease;
    position: relative;
}

.step-number::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    border: 2px solid rgba(102, 126, 234, 0.3);
    animation: ripple 2s ease infinite;
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.3); opacity: 0; }
}

.step-item:hover .step-number {
    transform: scale(1.1);
}

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

.step-content p {
    color: var(--text-light);
    font-size: 15px;
    font-weight: 500;
}

.step-arrow {
    font-size: 36px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 20px;
    font-weight: 800;
}

/* 常见问题 */
.faq {
    padding: 100px 0;
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    padding: 35px 40px;
    margin-bottom: 25px;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.faq-item:hover {
    border-left-color: var(--primary-color);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    transform: translateX(5px);
}

.faq-question {
    font-size: 19px;
    color: var(--text-color);
    margin-bottom: 18px;
    font-weight: 700;
    letter-spacing: -0.2px;
}

.faq-answer {
    color: var(--text-light);
    line-height: 1.9;
    font-weight: 500;
    font-size: 16px;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-card {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, white 100%);
    padding: 45px 35px;
    text-align: center;
    border-radius: 20px;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 2px solid transparent;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

.contact-icon {
    font-size: 56px;
    margin-bottom: 25px;
    display: inline-block;
    transition: transform 0.3s ease;
}

.contact-card:hover .contact-icon {
    transform: scale(1.15) rotate(5deg);
}

.contact-card h3 {
    font-size: 22px;
    margin-bottom: 18px;
    color: var(--text-color);
    font-weight: 700;
}

.contact-card p {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 17px;
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: white;
    padding: 80px 0 40px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 25px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--primary-light);
    transform: translateX(5px);
    display: inline-block;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 26px;
    cursor: pointer;
    display: none;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
}

.back-to-top::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    border: 2px solid rgba(102, 126, 234, 0.3);
    animation: ripple 2s ease infinite;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .nav-menu {
        display: none;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .section-title {
        font-size: 28px;
    }

    .process-steps {
        flex-direction: column;
        gap: 30px;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .section-title {
        font-size: 24px;
    }

    .nav-wrapper {
        flex-direction: column;
        gap: 15px;
    }

    .nav-buttons {
        width: 100%;
    }

    .nav-buttons .btn {
        flex: 1;
    }

    .product-tabs {
        gap: 10px;
    }

    .tab-btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .features-grid,
    .contact-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }
}