/* 基础样式 */
:root {
    /* 主题色系 */
    --primary: #0052D9;
    --primary-dark: #0046B8;
    --primary-light: #1B6FE4;
    --secondary-color: #FF9500;
    --secondary-dark: #FF8500;
    --dark: #1A1A1A;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --gray: #64748B;

    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-light));
    --gradient-secondary: linear-gradient(135deg, var(--secondary), var(--secondary-dark));

    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* 圆角 */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 2rem;

    --primary-color: #0066FF;  /* 零售主题色 */
    --secondary-color: #E6F0FF;
    --bg-color: #FFFFFF;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}


/* 主横幅 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), #3385FF);
    color: white;
    position: relative;
    padding: 234px 0 171px;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../images/milktea/hero-bg.webp');
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgb(0 0 0 / 90%), rgb(103 129 211 / 30%));
    z-index: 2;
}
.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.hero-btns {
    display: flex;
    gap: 20px;
}

.primary-btn, .outline-btn {
    padding: 15px 35px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.primary-btn {
    background: white;
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    transition: all 0.3s ease;
}

.outline-btn {
    border: 2px solid white;
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    margin-left: 15px;
    transition: all 0.3s ease;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background: url('images/wave.svg') repeat-x;
    animation: wave 10s linear infinite;
}

/* 视频按钮和弹窗样式 */
.video-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: transparent;
    border: none;
    color: #0066FF;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-btn i {
    font-size: 24px;
}

.video-btn:hover {
    color: #0052CC;
    transform: translateY(-2px);
}

.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    width: 80%;
    max-width: 1000px;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
}

.video-container {
    position: relative;
    padding-top: 56.25%; /* 16:9 比例 */
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.close-btn {
    position: absolute;
    top: -40px;
    right: 0;
    background: transparent;
    border: none;
    color: white;
    font-size: 32px;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
    transition: transform 0.3s ease;
}

.close-btn:hover {
    transform: rotate(90deg);
}

/* 动画效果 */
@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-content {
    animation: modalFadeIn 0.3s ease;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-content {
        flex-direction: column;
        padding: 20px;
    }

    .hero-text {
        text-align: center;
        padding: 0;
    }

    .hero-btns {
        justify-content: center;
    }

    .management-card {
        flex-direction: column;
    }

    .device-showcase {
        flex-direction: column;
        align-items: center;
    }

    .plus-icon {
        transform: rotate(90deg);
        margin: 10px 0;
    }
}

/* 小屏幕设备优化 */
@media (max-width: 480px) {
    .section-header h2 {
        font-size: 24px;
    }

    .plan-card {
        padding: 15px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}
/* 适用业态部分样式 */
.industry-types {
    padding: 100px 0;
    background: #FFFFFF;
}

.type-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 0 20px;
}

.type-item {
    background: var(--bg-light);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.type-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.08);
}

.type-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    background: white;
    color: var(--primary-color);
    font-size: 32px;
    transition: all 0.3s ease;
}

.type-item:hover .type-icon {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.type-item h3 {
    font-size: 20px;
    color: #1A1A1A;
    margin-bottom: 12px;
}

.type-item p {
    font-size: 14px;
    color: #666666;
    line-height: 1.6;
    margin: 0;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .type-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .type-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .type-item {
        padding: 30px 20px;
    }

    .type-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .type-grid {
        grid-template-columns: 1fr;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 通用样式覆盖 */
.section-title {
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-color);
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.section-title p {
    color: #666;
    font-size: 16px;
}
/* 核心优势 */
.features {
    padding: 100px 0;
    background: linear-gradient(to bottom, #FFFFFF, #F8FAFC);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 0 20px;
}

.feature-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    background: var(--bg-light);
    color: var(--primary-color);
    font-size: 32px;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 20px;
    color: #1A1A1A;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: #666666;
    line-height: 1.6;
    margin: 0;
}

/* 响应式优化 */
@media (max-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: 30px 20px;
    }

    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
}

/* 会员体系样式 */
.member-system {
    padding: 100px 0;
    background: linear-gradient(to bottom, #FFFFFF, #F8FAFC);
    overflow: hidden;
}

.member-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.member-content {
    padding-right: 40px;
}

.subtitle {
    font-size: 32px;
    color: var(--primary-color);
    margin: 16px 0;
}

.desc {
    font-size: 16px;
    color: #666666;
    line-height: 1.6;
    margin-bottom: 40px;
}

.member-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.member-features .feature-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.08);
    transition: all 0.3s ease;
}

.member-features .feature-item:hover {
    transform: translateY(-5px);
}

.member-features .feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
}

.member-features .feature-icon i {
    font-size: 24px;
    color: white;
}

.member-features .feature-text h4 {
    font-size: 18px;
    color: #1A1A1A;
    margin-bottom: 4px;
}

.member-features .feature-text p {
    font-size: 14px;
    color: #666666;
}

.member-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.1);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .member-container {
        grid-template-columns: 1fr;
    }

    .member-content {
        padding-right: 0;
    }
}

@media (max-width: 768px) {
    .member-system {
        padding: 60px 0;
    }

    .member-features {
        grid-template-columns: 1fr;
    }

    .subtitle {
        font-size: 28px;
    }
}

/* 设备方案部分 */
.hardware-solution {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.section-desc {
    text-align: center;
    color: #666;
    margin-bottom: 50px;
    font-size: 18px;
}

.hardware-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.hardware-item {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.hardware-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.hardware-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: #f0f7ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hardware-icon i {
    font-size: 36px;
    color: var(--primary-color);
}

.hardware-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.hardware-item p {
    color: #666;
    line-height: 1.6;
}

.hardware-features {
    display: flex;
    justify-content: center;
    gap: 60px;
    text-align: center;
}

.feature .feature-number {
    font-size: 36px;
    font-weight: bold;
    color: var(--primary-color);
    display: block;
    margin-bottom: 10px;
}

.feature p {
    color: #666;
    font-size: 16px;
}


/* 响应式适配 */
@media (max-width: 768px) {
    .hardware-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }

    .hardware-features {
        flex-direction: column;
        gap: 30px;
    }

    .demo-form {
        padding: 30px 20px;
    }
}

/* 案例分享部分 */
.case-studies {
    padding: 80px 0;
    background: #fff;
}

.section-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.section-more a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 16px;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.section-more a:hover {
    color: var(--primary-dark);
    transform: translateX(5px);
}

.case-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s ease;
    border: 1px solid #E5E7EB;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.08);
}

.case-logo {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #F8FAFC;
}

.case-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.case-card h3 {
    font-size: 20px;
    color: #1A1A1A;
    margin-bottom: 16px;
}

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

.case-tags span {
    padding: 6px 12px;
    background: var(--secondary-color);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 14px;
    background: rgba(0, 102, 255, 0.1);
}

/* 案例分享响应式样式 */
@media (max-width: 992px) {
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .case-studies {
        padding: 60px 0;
    }
    
    .section-header {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
}

@media (max-width: 576px) {
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .case-card {
        padding: 20px;
    }
}