:root {
    --primary-color: #886c54;
    --primary-blue: #039fe8;
    --dark-gray: #39312c;
    --accent-color: #00d378;
    --accent-green: #00d378;
    --text-light: #e0e0e0;
    --text-dark: #333;
    --white: #fff;
    --box-shadow: 0 0 24px rgba(204, 204, 204, 0.24);
    --border-radius: 16px;
}
 
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
 
body {
    font-family: 'PingFang SC', sans-serif;
    color: var(--text-light);
    line-height: 1.6;
}
 
/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
	 
	background-image: url('../images/bg1.png'); 
	    background-position: center center;  /* 居中 */
	    background-size: cover;          /* 关键：完整显示图片，保持比例 */
	    background-repeat: no-repeat;      /* 不重复 */
	    /* background-attachment: fixed;      /* 可选：固定背景不随滚动移动 */ */
    overflow: hidden;
}
 
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary-color);
    opacity: 0.4;
}
 
.hero-content {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 84px 20px;
    text-align: center;
    z-index: 1;
}
 
.hero-headline {
    font-weight: 500;
    font-size: 64px;
    text-shadow: 0 4px 4px rgba(0,0,0,0.25);
    margin-bottom: 40px;
}
 
.hero-subhead {
    font-weight: 400;
    font-size: 40px;
    margin-bottom: 20px;
}
 
.hero-description {
    font-weight: 400;
    font-size: 16px;
    margin-bottom: 16px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
 
.hero-cta-section {
    margin-top: 60px;
}
 
.hero-cta-headline {
    font-weight: 600;
    font-size: 36px;
    margin-bottom: 40px;
}
 
.social-icons {
    position: fixed;
    right: 40px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 24px;
    z-index: 2;
}
 
.social-icon {
    width: 68px;
    height: 63px;
    border-radius: 50%;
    background-color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 12px rgba(0,0,0,0.25);
    transition: transform 0.3s;
    background-size: 100%; /* 控制图标大小 */
    background-repeat: no-repeat;
    background-position: center;
}
 
.social-icon:hover {
    transform: scale(1.1);
}
 
.social-icon.accent  {
    background-color: var(--accent-color);
}

/* 为每个图标指定不同图片 */
.social-icon:nth-child(1) {
    background-image: url('../images/t3.png'); 
}
 
.social-icon:nth-child(2) {
    background-image: url('../images/t2.png'); 
}
 
.social-icon.accent  {
    background-image: url('../images/t1.png'); 
}

/* Criteria Section */
.criteria-section {
    position: relative;
    min-height: 100vh;
    background-color: #f5f5f5;
    padding: 0px 0;
	background: #362b22;
}
 
.decorative-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}
 
.decorative-element {
    position: absolute;
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.8;
}
 
.element-1 {
    width: 356px;
    height: 445px;
    top: 50%;
    right: 5%;
    transform: translateY(-50%);
}
 
.element-2 {
    width: 128px;
    height: 161px;
    top: 0;
    right: 10%;
}
 
.element-3 {
    width: 75px;
    height: 94px;
    top: 34px;
    left: 0;
}
 
.element-4 {
    width: 36px;
    height: 46px;
    bottom: 10%;
    left: 10%;
}
 
.element-5 {
    width: 91px;
    height: 114px;
    top: 30%;
    left: 50%;
    transform: translateX(-50%) rotate(-15deg);
}
 
.criteria-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
 
.criteria-content {
    display: flex;
    gap: 40px;
    position: relative;
    z-index: 1;
}
 
/* 基础样式 - 移动优先 */
.side-panel {
    width: 100%;
    max-width: 402px; /* 匹配视频原始宽度 */
    margin: 0 auto 2rem;
    border: 2px solid var(--text-dark);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    aspect-ratio: 402/716; /* 9:16竖屏比例 */
    overflow: hidden;
    background: #000;
}
 
.side-panel iframe {
    width: 100%;
    height: 100%;
    display: block;
    border: none;
}
 
.criteria-list {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
 
.criteria-card {
    background-color: var(--dark-gray);
    padding: 24px 36px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}
 
/* 初始背景色设置 */
.criteria-card:nth-child(1),
.criteria-card:nth-child(2),
.criteria-card:nth-child(3) { /* 第二、三个卡片 */
    background-color: var(--dark-gray);
}

/* 基础悬停效果 */
.criteria-card:hover {
    background-color: #1a8bc1; /* 比原背景稍亮的颜色 */
    transform: translateY(-5px); /* 轻微上浮 */
    box-shadow: 0 8px 16px rgba(0,0,0,0.2); /* 增强阴影 */
}

/* 移动端移除悬停效果（防止触摸设备误触发） */
@media (hover: none) {
    .criteria-card:hover {
        background-color: inherit;
        transform: none;
        box-shadow: var(--box-shadow);
    }
} 
 
.criteria-title {
    font-size: 40px;
    font-weight: 400;
    margin-bottom: 16px;
}
 
.criteria-subtitle {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 16px;
}
 
.criteria-description {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-light);
}
 
/* Partner Section */
.partner-section {
     
    position: relative;
    min-height: 100vh;
     
    background-image: url('../images/bg2.png'); 
        background-position: center center;  /* 居中 */
        background-size: cover;          /* 关键：完整显示图片，保持比例 */
         
    overflow: hidden;
}
 
.partner-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
 
.partner-header {
    text-align: center;
    margin-bottom: 60px;
}
 
.partner-title {
    font-size: 40px;
    font-weight: 500;
    color: #e0e0e0;
    margin-top: 20px;
}
 
.partner-subtitle {
    font-size: 32px;
    font-weight: 400;
    color: #e0e0e0;
}
 
.partner-cards {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}
 
.partner-card {
    
    height: 730px; /* 必须设置高度 */
    background: url('../images/d-bg.svg')  no-repeat center center;
    background-size: cover; /* 关键属性 */
    border-radius: 8px;
    /* box-shadow: 0 0 36px rgba(0, 0, 0, 0.5); */
    overflow: hidden;
    position: relative; /* 为内部元素定位做准备 */
	margin: 0px -80px;
}
 
.card-image {
    height: 380px;
    margin-top: 80px;
	margin-left: 10px;
}
 
.card-content {
	padding: 30px;
	 
}
@media (max-width: 768px) {
	.card-content {
		padding: 81px;
		padding-top: 30%;
	}
}
.card-text {
    margin-bottom: 30px;
}
 
.card-text h3 {
    font-size: 24px;
    color: #e0e0e0;
    margin-bottom: 15px;
    text-align: center;
}
 
.card-text p {
    font-size: 14px;
    color: #e0e0e0;
    text-align: center;
}
 
.card-button {
    width: 100%;
    padding: 12px;
    background-color: #00d378;
    color: #333;
    border: none;
    border-radius: 4px;
    font-size: 20px;
    font-weight: 400;
    cursor: pointer;
    transition: background-color 0.3s;
}
 
.card-button:hover {
    background-color: #00b366;
}
 
/* Advantages Section */
.advantages-section {
    background-color: #39312c;
    padding: 80px 0;
    color: #e0e0e0;
}
 
.advantages-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
 
.advantages-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}
 
.advantages-title {
    font-size: 32px;
    font-weight: 500;
    margin-top: 20px;
    color: #000;
}
 
.advantages-subtitle {
    font-size: 40px;
    font-weight: 400;
    color: #000;
}
 
.advantages-cards {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 60px;
}
 
.advantage-card {
    background-color: rgba(57,49,44,0.9);
    border-radius: 16px;
    padding: 30px;
    width: 380px;
    box-shadow: 0 0 24px rgba(255,255,255,0.24);
    text-align: center;
}
 
.card-icon {
    margin-bottom: 20px;
}
 
.icon-circle {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}
 
.icon-shape {
    width: 50px;
    height: 50px;
     
}
 
.complex-icon {
    position: relative;
    background: transparent;
}
 
.complex-icon::before,
.complex-icon::after {
    content: '';
    position: absolute;
    background: #e0e0e0;
}
 
.card-title {
    font-size: 24px;
    margin-bottom: 10px;
}
 
.card-subtitle {
    font-size: 14px;
    margin-bottom: 20px;
}
 
.card-description {
    font-size: 14px;
    line-height: 1.6;
}
 
.advantages-cta {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
}
 
/* Shared Components */
.cta-button {
    display: inline-flex;
    align-items: center;
    background-color: var(--accent-green);
    color: var(--text-dark);
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 24px;
    transition: transform 0.3s, box-shadow 0.3s;
}
 
.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}
 
.cta-icon {
    width: 24px;
    height: 24px;
    margin-right: 12px;
}
 
.cta-icon svg {
    width: 100%;
    height: 100%;
}
 
.advantages-footer {
    text-align: center;
    font-size: 12px;
    padding-top: 20px;
    border-top: 1px solid rgba(224,224,224,0.2);
}
 
/* Mobile Responsiveness */
@media (max-width: 1200px) {
    .hero-headline {
        font-size: 48px;
    }
    
    .hero-subhead {
        font-size: 32px;
    }
    
    .social-icons {
        right: 20px;gap: 16px;
    }
	
    .social-icon {
    	width: 50px;
    	height: 50px;
    }
    
    .criteria-content {
        flex-direction: column;
    }
    
    .side-panel {
        width: 100%;
        margin-bottom: 30px;
    }
    
    .partner-cards,
    .advantages-cards {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .partner-card,
    .advantage-card {
        width: 45%;
        margin-bottom: 30px;
    }
}
 
@media (max-width: 768px) {
    .hero-content {
        padding: 40px 15px;
    }
    
    .hero-headline {
        font-size: 36px;
        margin-bottom: 20px;
    }
    
    .hero-subhead {
        font-size: 24px;
    }
    
    .hero-description {
        font-size: 14px;
    }
    
    .social-icons {
        position: fixed;
        transform: none;
        flex-direction: column;
        justify-content: center;
        margin-top: 30px;
    }
    
    .social-icon {
        width: 50px;
        height: 50px;
    }
    
    .criteria-title {
        font-size: 32px;
    }
    
    .criteria-subtitle {
        font-size: 18px;
    }
    
    .partner-title {
        font-size: 28px;
    }
    
    .partner-subtitle {
        font-size: 24px;
    }
    
    .partner-card,
    .advantage-card {
        width: 100%;
    }
    
    .card-image {
        height: 250px;
    }
    
    .advantages-title {
        font-size: 24px;
        color: #000;
    }
    
    .advantages-subtitle {
        font-size: 28px;
        color: #000;
    }
    
    .cta-button {
        padding: 12px 24px;
        font-size: 20px;
    }
}
 
@media (max-width: 480px) {
    .hero-headline {
        font-size: 28px;
    }
    
    .hero-subhead {
        font-size: 20px;
    }
    
    .hero-cta-headline {
        font-size: 24px;
    }
    
    .criteria-card {
        padding: 15px 20px;
    }
    
    .criteria-title {
        font-size: 24px;
    }
    
    .partner-header {
        margin-bottom: 30px;
    }
    
    .card-text h3 {
        font-size: 20px;
    }
    
    .card-button {
        font-size: 16px;
    }
    
    .advantages-cards {
        gap: 20px;
    }
    
    .advantage-card {
        padding: 20px;
    }
    
    .card-title {
        font-size: 20px;
    }
}


/* 移动设备特定调整 */
@media (max-width: 480px) {
    .side-panel {
        width: 90%;
        max-width: 100%; /* 在小屏幕上允许稍微压缩 */
        aspect-ratio: 9/16; /* 使用简化的比例值 */
        border-width: 1px;
        margin-bottom: 1.5rem;
    }
}
 
/* 平板设备 (768px以上) */
@media (min-width: 768px) {
    .side-panel {
        width: 60%;
        max-width: 402px; /* 保持原始尺寸 */
    }
}
 
/* 桌面设备 (1024px以上) */
@media (min-width: 1024px) {
    .side-panel {
        width: 402px; /* 固定原始宽度 */
        margin-bottom: 3rem;
    }
}