/* 移动端适配 */
* { box-sizing: border-box; }
body { 
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif; 
    background: linear-gradient(135deg, #003300, #006600);
    color: #fff;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
.container { width: 92%; max-width: 600px; margin: 0 auto; padding: 15px; }
.header { text-align: center; margin-bottom: 25px; }
.logo { font-size: 2.2rem; font-weight: bold; color: #f0e6d2; margin-bottom: 10px; }
.sub-title { color: #a8e6cf; font-size: 1.1rem; }

/* 防伪码输入区域 */
.input-group {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}
.input-box {
    position: relative;
    margin-bottom: 15px;
}
input {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 1.2rem;
    text-align: center;
    font-weight: bold;
}
input::placeholder { color: #a8e6cf; }
input:focus { outline: none; background: rgba(255, 255, 255, 0.3); }

.btn {
    display: block;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #00a86b, #00804d);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}
.btn:hover { background: linear-gradient(135deg, #008050, #00663d); }

/* 结果展示 */
.result-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 22px;
    margin-top: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.result-title { 
    font-size: 1.4rem; 
    color: #f0e6d2; 
    margin-bottom: 15px;    
    text-align: center;
}
.result-item { 
    margin: 12px 0; 
    padding-bottom: 12px; 
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.result-label { 
    display: inline-block; 
    width: 120px; 
    color: #a8e6cf;
}
.result-value { font-weight: bold; }

/* 后台管理样式 */
.admin-header { 
    text-align: center; 
    padding: 20px 0; 
    background: #006600; 
}
.admin-title { font-size: 1.8rem; color: #f0e6d2; }

/* ---------- 新增图片样式 ---------- */
/* 横幅图片：自适应手机宽度，居中显示，下方留白 */
.banner-image {
    display: block;          /* 块级元素，便于设置margin */
    max-width: 100%;         /* 最大宽度不超过父容器 */
    height: auto;            /* 高度自动，保持原始比例 */
    margin: 0 auto 20px;     /* 上下0边距，左右自动居中，底部留20px空白 */
    border-radius: 12px;     /* 圆角，与整体风格一致 */
    box-shadow: 0 4px 10px rgba(0,0,0,0.2); /* 增加一点阴影，提升立体感 */
}