/* ========================================
   智商云 - AI电商平台官网样式
   ======================================== */

/* CSS变量 */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f1f5f9;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --gradient-2: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

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

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    border-color: transparent;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-white {
    background: var(--white);
    color: var(--primary);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-outline-white:hover {
    background: var(--white);
    color: var(--primary);
}

.btn-large {
    padding: 16px 32px;
    font-size: 17px;
}

.btn-block {
    width: 100%;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
}

/* 顶部与底部使用的图片 Logo */
.logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
}

.logo-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
}

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

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

.nav-buttons {
    display: flex;
    gap: 12px;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.particle:nth-child(1) {
    top: -100px;
    left: -100px;
    background: rgba(99, 102, 241, 0.3);
    animation-delay: 0s;
}

.particle:nth-child(2) {
    top: 50%;
    right: -150px;
    background: rgba(139, 92, 246, 0.3);
    animation-delay: -5s;
}

.particle:nth-child(3) {
    bottom: -100px;
    left: 30%;
    background: rgba(217, 70, 239, 0.2);
    animation-delay: -10s;
}

.particle:nth-child(4) {
    top: 30%;
    left: 50%;
    background: rgba(16, 185, 129, 0.2);
    animation-delay: -15s;
}

.particle:nth-child(5) {
    bottom: 20%;
    right: 20%;
    background: rgba(245, 158, 11, 0.2);
    animation-delay: -7s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-badge i {
    font-size: 12px;
}

.hero-title {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--dark);
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--gray);
}

/* Hero 右侧图形 */
.hero-image {
    position: relative;
    height: 500px;
}

.hero-card {
    position: absolute;
    background: var(--white);
    padding: 16px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    animation: cardFloat 4s ease-in-out infinite;
}

.hero-card i {
    font-size: 20px;
}

.card-1 {
    top: 20px;
    left: 20px;
    color: var(--secondary);
    animation-delay: 0s;
}

.card-2 {
    top: 100px;
    right: 0;
    color: var(--primary);
    animation-delay: -1s;
}

.card-3 {
    bottom: 80px;
    left: 0;
    color: var(--accent);
    animation-delay: -2s;
}

@keyframes cardFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.dashboard-preview {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 380px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.dashboard-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--dark);
    color: var(--white);
    font-size: 13px;
}

.dots {
    display: flex;
    gap: 6px;
}

.dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dots span:nth-child(1) { background: #ff5f56; }
.dots span:nth-child(2) { background: #ffbd2e; }
.dots span:nth-child(3) { background: #27ca40; }

.dashboard-content {
    padding: 20px;
}

.chart-area {
    height: 120px;
    margin-bottom: 16px;
}

.chart-svg {
    width: 100%;
    height: 100%;
}

.chart-line {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawLine 2s ease forwards;
}

@keyframes drawLine {
    to {
        stroke-dashoffset: 0;
    }
}

.mini-stats {
    display: flex;
    gap: 20px;
}

.mini-stat {
    flex: 1;
    padding: 12px;
    background: var(--light);
    border-radius: var(--radius);
}

.mini-label {
    display: block;
    font-size: 12px;
    color: var(--gray);
    margin-bottom: 4px;
}

.mini-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    color: var(--gray);
    font-size: 24px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ========================================
   品牌合作
   ======================================== */
.partners {
    padding: 60px 0;
    background: var(--white);
    border-bottom: 1px solid var(--light);
}

.partners-title {
    text-align: center;
    font-size: 14px;
    color: var(--gray-light);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 30px;
}

.partners-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}

.partner-logo {
    font-size: 40px;
    color: var(--gray-light);
    opacity: 0.5;
    transition: var(--transition);
}

.partner-logo:hover {
    opacity: 1;
    color: var(--primary);
}

/* ========================================
   Section 通用样式
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header.light .section-title,
.section-header.light .section-subtitle {
    color: var(--white);
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-header.light .section-badge {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   核心服务
   ======================================== */
.services {
    padding: 80px 0;
    background: var(--light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.service-card {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: var(--transition);
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-card.featured {
    border-color: transparent;
    border-top: none;
}

.service-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.service-icon {
    position: relative;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon .icon-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    border-radius: 20px;
    opacity: 0.1;
    transform: rotate(-5deg);
}

.service-icon i {
    font-size: 36px;
    color: var(--primary);
    position: relative;
    z-index: 1;
}

.service-icon.purple i {
    color: #8b5cf6;
}

.service-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 6px 14px;
    background: var(--secondary);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
}

.service-badge.pro {
    background: var(--gradient);
}

.service-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.service-desc {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 24px;
}

.service-features {
    margin-bottom: 24px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 15px;
    color: var(--dark-light);
}

.service-features i {
    color: var(--secondary);
    font-size: 14px;
}

.service-price {
    margin-bottom: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--light);
}

.service-highlight {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    padding: 16px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
    border-radius: var(--radius);
}

.highlight-item {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--dark);
}

.highlight-item i {
    color: var(--secondary);
    font-size: 18px;
}

.highlight-item strong {
    color: var(--primary);
    font-weight: 700;
}

/* 智能营销服务数据指标 */
.service-metrics {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(217, 70, 239, 0.1) 100%);
    border-radius: var(--radius);
}

.metric-item {
    flex: 1;
    text-align: center;
    padding: 10px;
    background: var(--white);
    border-radius: 8px;
}

.metric-value {
    display: block;
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, #8b5cf6 0%, #d946ef 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.metric-label {
    font-size: 12px;
    color: var(--gray);
}

/* 0元店铺运营模式 */
.business-model {
    margin-top: 50px;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.model-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 40px;
}

.model-title i {
    color: var(--accent);
    margin-right: 10px;
}

.model-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.model-step {
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    text-align: center;
    padding: 30px 20px;
    background: var(--light);
    border-radius: var(--radius-lg);
    position: relative;
    transition: var(--transition);
}

.model-step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background: var(--white);
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    background: var(--gradient);
    border-radius: 50%;
    color: var(--white);
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: var(--white);
}

.model-step h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.model-step p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

.model-arrow {
    color: var(--primary);
    font-size: 24px;
    opacity: 0.5;
}

@media (max-width: 768px) {
    .model-steps {
        flex-direction: column;
    }
    
    .model-arrow {
        transform: rotate(90deg);
    }
    
    .model-step {
        max-width: 100%;
        width: 100%;
    }
}

/* 智能营销增长飞轮 */
.growth-flywheel {
    margin-top: 50px;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    border-radius: var(--radius-lg);
    padding: 50px 40px;
}

.flywheel-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 50px;
}

.flywheel-title i {
    color: #a78bfa;
    margin-right: 10px;
    animation: spin 8s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.flywheel-container {
    position: relative;
    max-width: 500px;
    height: 400px;
    margin: 0 auto;
}

.flywheel-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    z-index: 2;
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.5);
}

.center-icon {
    font-size: 32px;
    margin-bottom: 5px;
}

.flywheel-center span {
    font-size: 14px;
    font-weight: 600;
}

.flywheel-items {
    position: relative;
    width: 100%;
    height: 100%;
}

.flywheel-item {
    position: absolute;
    width: 130px;
    text-align: center;
    transition: var(--transition);
}

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

.flywheel-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 24px;
    color: #a78bfa;
    transition: var(--transition);
}

.flywheel-item:hover .flywheel-icon {
    background: var(--gradient);
    color: var(--white);
    border-color: transparent;
}

.flywheel-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 6px;
}

.flywheel-item p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

/* 五个节点的位置 - 圆形分布 */
.flywheel-item.item-1 { top: 0; left: 50%; transform: translateX(-50%); }
.flywheel-item.item-2 { top: 25%; right: 0; }
.flywheel-item.item-3 { bottom: 10%; right: 10%; }
.flywheel-item.item-4 { bottom: 10%; left: 10%; }
.flywheel-item.item-5 { top: 25%; left: 0; }

.flywheel-arrows {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

@media (max-width: 768px) {
    .flywheel-container {
        height: auto;
        padding: 20px 0;
    }
    
    .flywheel-items {
        position: relative;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    
    .flywheel-item {
        position: relative;
        top: auto !important;
        left: auto !important;
        right: auto !important;
        bottom: auto !important;
        transform: none !important;
    }
    
    .flywheel-center {
        position: relative;
        top: auto;
        left: auto;
        transform: none;
        margin: 30px auto;
    }
    
    .flywheel-arrows {
        display: none;
    }
}

.price-tag {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
}

.price-period {
    font-size: 16px;
    color: var(--gray);
}

/* ========================================
   解决方案
   ======================================== */
.solutions {
    padding: 100px 0;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.solutions::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.solutions-flow {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.flow-line {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 2px;
}

.solution-item {
    position: relative;
    display: flex;
    gap: 60px;
    margin-bottom: 60px;
    padding-left: calc(50% + 40px);
}

.solution-item:nth-child(even) {
    flex-direction: row-reverse;
    padding-left: 0;
    padding-right: calc(50% + 40px);
}

.solution-number {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    z-index: 1;
}

.solution-content {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 30px;
    transition: var(--transition);
}

.solution-content:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.solution-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--white);
    margin-bottom: 20px;
}

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

.solution-content p {
    font-size: 15px;
    color: var(--gray-light);
    margin-bottom: 16px;
}

.solution-content ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.solution-content li {
    font-size: 14px;
    color: var(--gray-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.solution-content li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
}

/* ========================================
   技术优势
   ======================================== */
.advantages {
    padding: 100px 0;
    background: var(--white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card {
    background: var(--light);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background: var(--white);
}

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

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

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

.advantage-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.advantage-card p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
}

/* ========================================
   数据展示 / 诚邀入驻
   ======================================== */
.data-showcase {
    padding: 80px 0;
    background: var(--gradient);
}

/* 诚邀入驻样式 */
.invitation-showcase {
    text-align: center;
}

.invitation-content h2 {
    font-size: 36px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
}

.invitation-content h2 i {
    margin-right: 12px;
}

.invitation-content > p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.invitation-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.invitation-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-size: 16px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.invitation-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

.invitation-item i {
    font-size: 18px;
}

/* Hero区域邀请统计样式 */
.invitation-stats .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.invitation-stats .stat-icon {
    font-size: 32px;
    color: var(--primary);
}

.invitation-stats .stat-label {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.data-item {
    text-align: center;
    color: var(--white);
}

.data-icon {
    font-size: 36px;
    margin-bottom: 16px;
    opacity: 0.8;
}

.data-number {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 8px;
}

.data-label {
    font-size: 16px;
    opacity: 0.9;
}

/* ========================================
   成功案例
   ======================================== */
.cases {
    padding: 100px 0;
    background: var(--light);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    height: 200px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-image.food {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

.case-image.beauty {
    background: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
}

.case-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
}

.case-category {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 50px;
    color: var(--white);
    font-size: 13px;
    font-weight: 500;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.case-content p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-stats {
    display: flex;
    gap: 30px;
}

.case-stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.stat-desc {
    font-size: 13px;
    color: var(--gray);
}

/* ========================================
   客户评价
   ======================================== */
.testimonials {
    padding: 100px 0;
    background: var(--dark);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 30px;
    transition: var(--transition);
}

.testimonial-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.quote-icon {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 20px;
}

.testimonial-content p {
    font-size: 16px;
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
}

.author-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 4px;
}

.author-info span {
    font-size: 14px;
    color: var(--gray-light);
}

/* ========================================
   CTA 区域
   ======================================== */
.cta {
    padding: 100px 0;
    background: var(--gradient);
    text-align: center;
}

.cta-content h2 {
    font-size: 42px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 32px;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
}

.cta-features i {
    margin-right: 8px;
    color: #4ade80;
}

/* ========================================
   关于我们
   ======================================== */
.about {
    padding: 60px 0;
    background: var(--white);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 32px;
    color: var(--white);
}

.about-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 24px;
}

.about-desc {
    font-size: 16px;
    line-height: 1.9;
    color: var(--gray);
    margin-bottom: 30px;
}

.about-desc strong {
    color: var(--dark);
    font-weight: 600;
}

.about-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}

.about-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--light);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark);
    transition: var(--transition);
}

.about-tag:hover {
    background: var(--gradient);
    color: var(--white);
}

.about-tag i {
    font-size: 16px;
    color: var(--primary);
}

.about-tag:hover i {
    color: var(--white);
}

/* ========================================
   加入我们
   ======================================== */
.join-us {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--light) 100%);
}

.join-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.join-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    box-shadow: var(--shadow-md);
    border: 2px solid transparent;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.join-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.join-card.featured {
    border-color: var(--primary);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.02) 0%, var(--white) 100%);
}

.join-card-badge {
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--gradient);
    color: var(--white);
    padding: 6px 40px;
    font-size: 12px;
    font-weight: 600;
    transform: rotate(45deg);
}

.join-card-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
    background: var(--light);
    color: var(--primary);
}

.join-card.featured .join-card-icon {
    background: var(--gradient);
    color: var(--white);
}

.join-card-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.join-card-desc {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 24px;
}

.join-card-benefits {
    list-style: none;
    margin-bottom: 24px;
}

.join-card-benefits li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--dark);
}

.join-card-benefits li i {
    color: #10b981;
    font-size: 16px;
}

.join-card-requirements {
    background: var(--light);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
}

.join-card-requirements h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.join-card-requirements p {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.6;
}

.join-footer {
    text-align: center;
    margin-top: 40px;
}

.join-footer p {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: #92400e;
}

.join-footer p i {
    color: #f59e0b;
}

/* 响应式 - 加入我们 */
@media (max-width: 768px) {
    .join-cards {
        grid-template-columns: 1fr;
    }
    
    .join-card {
        padding: 30px 24px;
    }
    
    .join-card-badge {
        top: 15px;
        right: -35px;
        padding: 5px 40px;
        font-size: 11px;
    }
}

/* ========================================
   联系我们
   ======================================== */
.contact {
    padding: 60px 0 80px;
    background: linear-gradient(180deg, var(--light) 0%, var(--white) 100%);
}

/* 诚邀入驻标题 */
.contact-header {
    text-align: center;
    margin-bottom: 50px;
    padding: 45px 40px;
    background: var(--gradient);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.contact-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.contact-header h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.contact-header h2 i {
    margin-right: 12px;
}

.contact-header p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    z-index: 1;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.contact-info > p {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 30px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    gap: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.contact-text p {
    font-size: 15px;
    color: var(--gray);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 44px;
    height: 44px;
    background: var(--light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    font-size: 20px;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    color: var(--white);
}

/* 二维码区域 */
.qrcode-section {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--light);
}

.qrcode-section h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 20px;
}

.qrcode-grid {
    display: flex;
    gap: 24px;
}

.qrcode-item {
    text-align: center;
    /* 固定宽度以与二维码对齐 */
    width: 120px;
}

.qrcode-placeholder {
    width: 120px;
    height: 120px;
    background: var(--light);
    border: 2px dashed var(--gray-light);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 10px;
    transition: var(--transition);
}

.qrcode-placeholder i {
    font-size: 32px;
    color: #07c160;
}

.qrcode-placeholder.miniprogram i {
    color: var(--primary);
}

.qrcode-placeholder span {
    font-size: 12px;
    color: var(--gray);
}

.qrcode-placeholder:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.qrcode-item p {
    font-size: 14px;
    color: var(--gray);
    font-weight: 500;
    /* 文本不换行，保持在一行内显示 */
    white-space: nowrap;
}

/* 如果有真实二维码图片，使用以下样式 */
.qrcode-item img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius);
    object-fit: cover;
}

.contact-form {
    background: var(--light);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 30px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid transparent;
    background: var(--white);
    border-radius: var(--radius);
    font-size: 15px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 表单验证样式 */
.form-group label .required {
    color: #ef4444;
    margin-left: 2px;
}

.form-group .error-message {
    display: none;
    font-size: 12px;
    color: #ef4444;
    margin-top: 6px;
    padding-left: 4px;
}

.form-group input.error,
.form-group textarea.error {
    border-color: #ef4444;
    background: #fef2f2;
}

.form-group input.error:focus,
.form-group textarea.error:focus {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* 通知动画 */
@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--dark);
    padding: 50px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* 简化版footer布局 */
.footer-grid-simple {
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-icon {
    background: var(--gradient);
}

.footer-brand .logo-text {
    color: var(--white);
    -webkit-text-fill-color: var(--white);
}

.footer-brand > p {
    color: var(--gray-light);
    font-size: 15px;
    margin-bottom: 20px;
}

/* 页脚联系信息 */
.footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-light);
    font-size: 14px;
}

.footer-contact-item i {
    width: 16px;
    color: var(--primary-light);
}

/* 页脚二维码 */
.footer-qrcode h4 {
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-qrcode-grid {
    display: flex;
    gap: 16px;
}

.footer-qrcode-item {
    text-align: center;
    /* 固定宽度与底部二维码图片对齐 */
    width: 80px;
}

.footer-qrcode-item .qrcode-image {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    margin-bottom: 8px;
    transition: var(--transition);
}

.footer-qrcode-item .qrcode-image:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.footer-qrcode-item .qrcode-placeholder.small {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px dashed rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.footer-qrcode-item .qrcode-placeholder.small i {
    font-size: 28px;
    color: #07c160;
}

.footer-qrcode-item .qrcode-placeholder.small.miniprogram i {
    color: var(--primary-light);
}

.footer-qrcode-item span {
    font-size: 12px;
    color: var(--gray-light);
    display: block;
    margin-top: 4px;
    /* 避免“微信公 / 众号”这种断行 */
    white-space: nowrap;
}

.footer-badges {
    display: flex;
    gap: 10px;
}

.footer-links h4 {
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-links a {
    color: var(--gray-light);
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 0;
}

.footer-bottom p {
    color: var(--gray-light);
    font-size: 14px;
}

.footer-bottom-links {
    display: flex;
    gap: 30px;
}

.footer-bottom-links a {
    color: var(--gray-light);
    font-size: 14px;
}

.footer-bottom-links a:hover {
    color: var(--white);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 700px;
        margin: 0 auto;
    }

    .hero-subtitle {
        max-width: 100%;
    }

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

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

    .hero-image {
        display: none;
    }

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

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-slider {
        grid-template-columns: 1fr;
    }

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

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid-simple {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-brand {
        grid-column: span 2;
    }

    .solution-item {
        padding-left: calc(50% + 30px);
    }

    .solution-item:nth-child(even) {
        padding-right: calc(50% + 30px);
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-buttons {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

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

    .section-title {
        font-size: 32px;
    }

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

    .data-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-features {
        flex-direction: column;
        gap: 16px;
    }

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

    .footer-brand {
        grid-column: span 2;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .solution-item,
    .solution-item:nth-child(even) {
        padding-left: 80px;
        padding-right: 0;
        flex-direction: row;
    }

    .solution-number {
        left: 0;
        transform: none;
    }

    .flow-line {
        left: 28px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid,
    .footer-grid-simple {
        grid-template-columns: 1fr;
    }

    .footer-brand {
        grid-column: span 1;
    }
    
    .footer-qrcode-grid {
        justify-content: center;
    }
    
    .contact-header h2 {
        font-size: 22px;
    }

    .partners-logos {
        gap: 30px;
    }

    .partner-logo {
        font-size: 30px;
    }
}

/* ========================================
   动画效果
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}